[{"data":1,"prerenderedAt":1315},["ShallowReactive",2],{"site-footer-common":3,"glossary:sonic-sootblower":45,"glossary-related:sonic-sootblower":314},{"id":4,"extension":5,"footer":6,"meta":40,"navbar":41,"stem":43,"__hash__":44},"common\u002Fcommon.yml","yml",{"tagline":7,"links":8,"sections":9},"Acoustic cleaning intelligence for industrial fouling, soot, ash, dust and build-up.",[],[10,19,31],{"title":11,"links":12},"Product",[13,16],{"label":14,"to":15},"How it works","\u002F#product",{"label":17,"to":18},"Cost assessment","\u002F#hero",{"title":20,"links":21},"Company",[22,25,28],{"label":23,"to":24},"What we build","\u002F#about",{"label":26,"to":27},"Careers","\u002F#careers",{"label":29,"to":30},"Contact","\u002F#contact",{"title":32,"links":33},"Resources",[34,37],{"label":35,"to":36},"Blog","\u002Fresources\u002Fblog",{"label":38,"to":39},"Glossary","\u002Fglossary",{},{"links":42},[],"common","YocmZRy1AYfBbpgGVms-zhdiABlF8VTxHx6h4rDmZBA",{"id":46,"title":47,"aliases":48,"body":52,"category":286,"description":287,"extension":288,"meta":289,"navigation":290,"path":291,"relatedTerms":292,"seo":299,"sources":302,"stem":312,"term":47,"__hash__":313},"glossary\u002Fglossary\u002Fsonic-sootblower.md","Sonic sootblower",[49,50,51],"sonic soot blower","sonic sootblowers","acoustic sootblower",{"type":53,"value":54,"toc":278},"minimark",[55,88,93,99,103,193,196,200,247,251],[56,57,58,59,63,64,69,70,74,75,74,79,74,83,87],"p",{},"A ",[60,61,62],"strong",{},"sonic sootblower"," is a ",[65,66,68],"a",{"href":67},"\u002Fglossary\u002Fsonic-horn","sonic horn"," applied specifically to boiler heat-transfer surfaces — ",[65,71,73],{"href":72},"\u002Fglossary\u002Feconomiser","economisers",", ",[65,76,78],{"href":77},"\u002Fglossary\u002Fsuperheater","superheaters",[65,80,82],{"href":81},"\u002Fglossary\u002Freheater","reheaters",[65,84,86],{"href":85},"\u002Fglossary\u002Fair-heater","air heaters"," and convective-pass tube banks. The term carries over the \"sootblower\" lineage from the steam and air lances that historically performed this duty, but the cleaning mechanism is fundamentally different: a sonic sootblower uses pulsed low-frequency sound rather than a steam jet.",[89,90,92],"h2",{"id":91},"why-the-boiler-industry-name-persists","Why the boiler-industry name persists",[56,94,95,96,98],{},"Operators and OEMs (Babcock & Wilcox, ANDRITZ, Valmet, Mitsubishi Heavy Industries) cataloguing boiler-cleaning hardware naturally classify any device that removes soot, ash and slag from convective surfaces as a \"sootblower\". When acoustic cleaners entered the boiler aftermarket in the 1980s, they were absorbed into that taxonomy as ",[60,97,50],{}," to make procurement, maintenance and BLRBAC documentation straightforward. The device itself is identical to a sonic horn used on any other application.",[89,100,102],{"id":101},"sonic-sootblower-vs-steam-sootblower","Sonic sootblower vs steam sootblower",[104,105,106,124],"table",{},[107,108,109],"thead",{},[110,111,112,116,118],"tr",{},[113,114,115],"th",{},"Attribute",[113,117,47],{},[113,119,120],{},[65,121,123],{"href":122},"\u002Fglossary\u002Fsteam-sootblower","Steam sootblower",[125,126,127,139,150,161,171,182],"tbody",{},[110,128,129,133,136],{},[130,131,132],"td",{},"Cleaning medium",[130,134,135],{},"Pulsed sound (60–400 Hz, 140–180 dB)",[130,137,138],{},"Saturated or superheated steam jet",[110,140,141,144,147],{},[130,142,143],{},"Energy source",[130,145,146],{},"Compressed air, 4–7 bar",[130,148,149],{},"Boiler steam, typically 17–35 bar",[110,151,152,155,158],{},[130,153,154],{},"Moving parts in flue gas",[130,156,157],{},"None",[130,159,160],{},"Retractable lance + nozzle",[110,162,163,166,168],{},[130,164,165],{},"Tube erosion risk",[130,167,157],{},[130,169,170],{},"Documented at lance tip and opposite tube row",[110,172,173,176,179],{},[130,174,175],{},"Typical firing interval",[130,177,178],{},"Every 3–15 minutes",[130,180,181],{},"Every shift or longer",[110,183,184,187,190],{},[130,185,186],{},"Best suited to",[130,188,189],{},"Dry ash, dust, light-to-moderate fouling",[130,191,192],{},"Hard slag, baked-on deposits",[56,194,195],{},"The two technologies are increasingly specified together: sonic sootblowers handle the continuous, preventive duty across the convective pass, while a smaller fleet of steam retractables remains for furnace waterwalls and high-temperature finishing superheaters where slag bonds at temperatures sound alone cannot defeat.",[89,197,199],{"id":198},"applications","Applications",[201,202,203,216,227,234,240],"ul",{},[204,205,206,210,211,215],"li",{},[65,207,209],{"href":208},"\u002Fglossary\u002Frecovery-boiler","Kraft recovery boilers"," (superheaters, ",[65,212,214],{"href":213},"\u002Fglossary\u002Fgenerating-bank","generating banks",", economisers)",[204,217,218,222,223,226],{},[65,219,221],{"href":220},"\u002Fglossary\u002Fpc-boiler","Coal-fired utility boilers"," (economiser, ",[65,224,225],{"href":85},"air preheater"," cold end)",[204,228,229,233],{},[65,230,232],{"href":231},"\u002Fglossary\u002Fwaste-to-energy","Biomass and waste-to-energy boilers"," (ash-rich, chloride-laden flue gas)",[204,235,236],{},[65,237,239],{"href":238},"\u002Fglossary\u002Fheat-recovery-steam-generator","HRSGs in combined-cycle plants",[204,241,242,246],{},[65,243,245],{"href":244},"\u002Fglossary\u002Fboiler","Industrial process boilers"," in refining, petrochemicals and chemicals",[89,248,250],{"id":249},"related-terms","Related terms",[201,252,253,258,262,268,273],{},[204,254,255],{},[65,256,257],{"href":67},"Sonic horn",[204,259,260],{},[65,261,123],{"href":122},[204,263,264],{},[65,265,267],{"href":266},"\u002Fglossary\u002Facoustic-cleaner","Acoustic cleaner",[204,269,270],{},[65,271,272],{"href":72},"Economiser",[204,274,275],{},[65,276,277],{"href":77},"Superheater",{"title":279,"searchDepth":280,"depth":280,"links":281},"",2,[282,283,284,285],{"id":91,"depth":280,"text":92},{"id":101,"depth":280,"text":102},{"id":198,"depth":280,"text":199},{"id":249,"depth":280,"text":250},"core-technology","A sonic sootblower is a sonic horn applied specifically to boiler heat-transfer surfaces — economisers, superheaters, reheaters, air heaters and convective-pass tube banks. The term carries over the \"sootblower\" lineage from the steam and air lances that historically performed this duty, but the cleaning mechanism is fundamentally different: a sonic sootblower uses pulsed low-frequency sound rather than a steam jet.","md",{},true,"\u002Fglossary\u002Fsonic-sootblower",[293,294,295,296,297,298],"sonic-horn","acoustic-cleaner","steam-sootblower","ik-long-retract-sootblower","economiser","superheater",{"title":300,"description":301},"Sonic sootblower — definition, how it differs from steam sootblowers","A sonic sootblower is a sonic horn used specifically on boiler heat-transfer surfaces. It uses low-frequency sound instead of high-pressure steam, eliminating tube erosion and steam consumption.",[303,306,309],{"title":304,"url":305},"Wikipedia — Sonic soot blowers","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSonic_soot_blowers",{"title":307,"url":308},"Power Engineering — Tuning in to Acoustic Cleaning","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Ftuning-in-to-acoustic-cleaning\u002F",{"title":310,"url":311},"Babcock & Wilcox — Sootblower and Boiler Cleaning Terminology","https:\u002F\u002Fwww.babcock.com\u002Fhome\u002Fabout\u002Fresources\u002Flearning-center\u002Fsootblower-and-boiler-cleaning-terminology-principles-and-applications","glossary\u002Fsonic-sootblower","P4GMPBzkg45PunQoZzULwSiL9umkIdcjjuo6yyJkX9c",[315,537,700,937,1045,1174],{"id":316,"title":257,"aliases":317,"body":321,"category":286,"description":518,"extension":288,"meta":519,"navigation":290,"path":67,"relatedTerms":520,"seo":526,"sources":529,"stem":535,"term":257,"__hash__":536},"glossary\u002Fglossary\u002Fsonic-horn.md",[318,319,320],"sonic horns","sonic cleaning horn","industrial sonic horn",{"type":53,"value":322,"toc":511},[323,353,357,365,369,431,435,471,475,482,484],[56,324,58,325,327,328,331,332,74,336,74,340,74,344,347,348,352],{},[60,326,68],{}," is a pneumatically-driven sound emitter that produces high-intensity, low-frequency sound waves — typically between 60 and 400 Hz at sound pressure levels of 140 to 180 dB — used to dislodge particulate fouling from inside industrial process equipment. Sonic horns are the most common form of ",[65,329,330],{"href":266},"acoustic cleaner"," and the default specification for cleaning ",[65,333,335],{"href":334},"\u002Fglossary\u002Felectrostatic-precipitator","ESPs",[65,337,339],{"href":338},"\u002Fglossary\u002Ffabric-filter","baghouses",[65,341,343],{"href":342},"\u002Fglossary\u002Fselective-catalytic-reduction","SCR catalysts",[65,345,346],{"href":77},"boiler heat-transfer surfaces"," and ",[65,349,351],{"href":350},"\u002Fglossary\u002Fhopper","hoppers and silos",".",[89,354,356],{"id":355},"how-a-sonic-horn-works","How a sonic horn works",[56,358,359,360,364],{},"Compressed plant air admitted through a ",[65,361,363],{"href":362},"\u002Fglossary\u002Fsolenoid-valve","solenoid valve"," drives a metal diaphragm — typically titanium or 316 stainless — into resonant oscillation at the horn's fundamental frequency. The oscillating pressure field is amplified by an exponential bell horn and projected into the vessel as a near-spherical sound wave. Particulate already deposited on internal surfaces receives an oscillating acceleration that overcomes adhesion; loosened material is then carried out with the gas flow before it can sinter, bridge or bond. Because the cleaning is acoustic and non-contact, the horn can fire while the plant is online without tube erosion, refractory damage or thermal shock.",[89,366,368],{"id":367},"key-parameters","Key parameters",[104,370,371,381],{},[107,372,373],{},[110,374,375,378],{},[113,376,377],{},"Parameter",[113,379,380],{},"Typical range",[125,382,383,391,399,407,415,423],{},[110,384,385,388],{},[130,386,387],{},"Fundamental frequency",[130,389,390],{},"60–400 Hz",[110,392,393,396],{},[130,394,395],{},"Sound pressure level",[130,397,398],{},"140–180 dB",[110,400,401,404],{},[130,402,403],{},"Compressed-air consumption",[130,405,406],{},"8–14 Nm³\u002Fmin at 4–7 bar",[110,408,409,412],{},[130,410,411],{},"Operating temperature (with appropriate materials)",[130,413,414],{},"−40 °C to +500 °C",[110,416,417,420],{},[130,418,419],{},"Firing cycle",[130,421,422],{},"5–15 s burst, repeated every 3–15 minutes",[110,424,425,428],{},[130,426,427],{},"Mass",[130,429,430],{},"15–60 kg depending on horn size",[89,432,434],{"id":433},"frequency-selection","Frequency selection",[56,436,437,438,74,442,445,446,74,450,454,455,74,458,462,463,347,467,352],{},"Lower frequencies (60–125 Hz) project longer wavelengths and penetrate further into large open vessels — ",[65,439,441],{"href":440},"\u002Fglossary\u002Fpreheater-cyclone","preheater cyclones",[65,443,444],{"href":208},"recovery-boiler superheaters",", large ",[65,447,449],{"href":448},"\u002Fglossary\u002Fesp-field-bus-section","ESP fields",[65,451,453],{"href":452},"\u002Fglossary\u002Fsilo","silos",". Higher frequencies (230–400 Hz) carry more energy per unit volume and suit finer dust loads in ",[65,456,457],{"href":338},"fabric-filter compartments",[65,459,461],{"href":460},"\u002Fglossary\u002Fhoneycomb-catalyst","catalyst layers"," and smaller hopper geometries. See ",[65,464,466],{"href":465},"\u002Fglossary\u002Flow-frequency-acoustic-cleaner","low-frequency acoustic cleaner",[65,468,470],{"href":469},"\u002Fglossary\u002Fhigh-frequency-acoustic-cleaner","high-frequency acoustic cleaner",[89,472,474],{"id":473},"sonic-horn-vs-steam-sootblower","Sonic horn vs steam sootblower",[56,476,477,478,481],{},"Sonic horns are increasingly specified alongside or in place of ",[65,479,480],{"href":122},"steam sootblowers"," because they consume no boiler-grade steam, cause no tube erosion, require almost no moving parts and can fire every few minutes without operator intervention. They are less effective on hard, fused slag than retractable steam lances, so on furnace waterwalls and high-temperature superheaters they typically complement rather than replace mechanical cleaning.",[89,483,250],{"id":249},[201,485,486,490,494,500,506],{},[204,487,488],{},[65,489,267],{"href":266},[204,491,492],{},[65,493,47],{"href":291},[204,495,496],{},[65,497,499],{"href":498},"\u002Fglossary\u002Fbell-horn","Bell horn",[204,501,502],{},[65,503,505],{"href":504},"\u002Fglossary\u002Fdiaphragm-horn","Diaphragm horn",[204,507,508],{},[65,509,510],{"href":465},"Low-frequency acoustic cleaner",{"title":279,"searchDepth":280,"depth":280,"links":512},[513,514,515,516,517],{"id":355,"depth":280,"text":356},{"id":367,"depth":280,"text":368},{"id":433,"depth":280,"text":434},{"id":473,"depth":280,"text":474},{"id":249,"depth":280,"text":250},"A sonic horn is a pneumatically-driven sound emitter that produces high-intensity, low-frequency sound waves — typically between 60 and 400 Hz at sound pressure levels of 140 to 180 dB — used to dislodge particulate fouling from inside industrial process equipment. Sonic horns are the most common form of acoustic cleaner and the default specification for cleaning ESPs, baghouses, SCR catalysts, boiler heat-transfer surfaces and hoppers and silos.",{},[294,521,522,523,524,525],"acoustic-cleaning-system","sonic-sootblower","bell-horn","diaphragm-horn","low-frequency-acoustic-cleaner",{"title":527,"description":528},"Sonic horn — definition, frequency, SPL and industrial applications","A sonic horn is a pneumatically-driven low-frequency sound emitter (typically 60–400 Hz at 140–180 dB SPL) used to dislodge particulate fouling from boilers, ESPs, baghouses and process vessels.",[530,533,534],{"title":531,"url":532},"Power Engineering — Sonic Horns: A User's Introduction","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Fsonic-horns-a-userrsquos-introduction\u002F",{"title":307,"url":308},{"title":304,"url":305},"glossary\u002Fsonic-horn","YzrhN0kKzqSaQo0wfn0rueNZ-V43mcg5zahqeWi3lnU",{"id":538,"title":267,"aliases":539,"body":542,"category":286,"description":682,"extension":288,"meta":683,"navigation":290,"path":266,"relatedTerms":684,"seo":687,"sources":690,"stem":698,"term":267,"__hash__":699},"glossary\u002Fglossary\u002Facoustic-cleaner.md",[540,541],"acoustic cleaners","acoustic cleaning device",{"type":53,"value":543,"toc":676},[544,550,554,557,561,564,636,640,652,654],[56,545,546,547,549],{},"An ",[60,548,330],{}," is any device that uses high-intensity sound waves — typically at audible low frequencies between 60 and 450 Hz and sound pressure levels of 140 to 180 dB — to dislodge particulate fouling from inside industrial process equipment. The acoustic energy vibrates dust, ash, soot and other accreted solids, keeping them airborne and entrained in the gas flow so they cannot bond, bridge or harden on internal surfaces.",[89,551,553],{"id":552},"how-an-acoustic-cleaner-works","How an acoustic cleaner works",[56,555,556],{},"A pneumatic driver — usually compressed air at 4 to 7 bar — sets a metal diaphragm or piston-whistle assembly vibrating at the cleaner's design frequency. The vibration is amplified through an exponential bell horn and projected into the equipment as a near-spherical pressure field. Particulate already deposited on tube banks, plates, catalyst layers or hopper walls receives an oscillating force that overcomes adhesion. Because the cleaner is non-contact, it can run while the plant is online, every few minutes, without thermal shock, tube erosion or refractory damage.",[89,558,560],{"id":559},"where-acoustic-cleaners-are-used","Where acoustic cleaners are used",[56,562,563],{},"Acoustic cleaners are installed throughout the gas path and bulk-solids path of heavy industry:",[201,565,566,578,592,609,624],{},[204,567,568,571,572,74,574,74,576],{},[60,569,570],{},"Combustion plant"," — boilers, ",[65,573,73],{"href":72},[65,575,78],{"href":77},[65,577,86],{"href":85},[204,579,580,583,584,74,587,74,590],{},[60,581,582],{},"Air-pollution control"," — ",[65,585,586],{"href":334},"electrostatic precipitators",[65,588,589],{"href":338},"fabric filters",[65,591,343],{"href":342},[204,593,594,583,597,600,601,347,605],{},[60,595,596],{},"Bulk solids",[65,598,599],{"href":350},"hoppers, silos and bunkers"," prone to ",[65,602,604],{"href":603},"\u002Fglossary\u002Fbridging","bridging",[65,606,608],{"href":607},"\u002Fglossary\u002Frat-holing","rat-holing",[204,610,611,583,614,74,616,74,620],{},[60,612,613],{},"Cement",[65,615,441],{"href":440},[65,617,619],{"href":618},"\u002Fglossary\u002Fcalciner","calciners",[65,621,623],{"href":622},"\u002Fglossary\u002Fkiln-inlet-riser-duct","kiln inlets",[204,625,626,583,629,74,632],{},[60,627,628],{},"Pulp and paper",[65,630,631],{"href":208},"kraft recovery boilers",[65,633,635],{"href":634},"\u002Fglossary\u002Flime-kiln","lime kilns",[89,637,639],{"id":638},"acoustic-cleaners-are-not-ultrasonic-cleaners","Acoustic cleaners are not ultrasonic cleaners",[56,641,642,643,647,648,352],{},"The two terms are routinely confused but describe completely different technologies. Acoustic cleaners operate in the audible low-frequency band and clean dry industrial surfaces ",[644,645,646],"em",{},"in situ"," with airborne sound. Ultrasonic cleaners operate above 20 kHz inside a liquid bath and clean small parts off-line by cavitation. See ",[65,649,651],{"href":650},"\u002Fglossary\u002Facoustic-cleaning-vs-ultrasonic-cleaning","acoustic cleaning vs ultrasonic cleaning",[89,653,250],{"id":249},[201,655,656,662,666,670],{},[204,657,658],{},[65,659,661],{"href":660},"\u002Fglossary\u002Facoustic-cleaning-system","Acoustic cleaning system",[204,663,664],{},[65,665,257],{"href":67},[204,667,668],{},[65,669,47],{"href":291},[204,671,672],{},[65,673,675],{"href":674},"\u002Fglossary\u002Finfrasonic-cleaner","Infrasonic cleaner",{"title":279,"searchDepth":280,"depth":280,"links":677},[678,679,680,681],{"id":552,"depth":280,"text":553},{"id":559,"depth":280,"text":560},{"id":638,"depth":280,"text":639},{"id":249,"depth":280,"text":250},"An acoustic cleaner is any device that uses high-intensity sound waves — typically at audible low frequencies between 60 and 450 Hz and sound pressure levels of 140 to 180 dB — to dislodge particulate fouling from inside industrial process equipment. The acoustic energy vibrates dust, ash, soot and other accreted solids, keeping them airborne and entrained in the gas flow so they cannot bond, bridge or harden on internal surfaces.",{},[521,293,522,685,525,686],"infrasonic-cleaner","high-frequency-acoustic-cleaner",{"title":688,"description":689},"Acoustic cleaner — definition, principle, industrial uses","An acoustic cleaner is any device that uses high-intensity sound waves to dislodge particulate fouling from inside industrial process equipment such as boilers, ESPs, baghouses and silos.",[691,694,695],{"title":692,"url":693},"Power Magazine — The Theory and Application of Acoustic Cleaners","https:\u002F\u002Fwww.powermag.com\u002Fthe-theory-and-application-of-acoustic-cleaners\u002F",{"title":307,"url":308},{"title":696,"url":697},"Wikipedia — Acoustic cleaning","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAcoustic_cleaning","glossary\u002Facoustic-cleaner","MwPOKb4JllxnhygiJ3--SHn7B_zEw8BdkQXIXUCoV0E",{"id":701,"title":123,"aliases":702,"body":706,"category":920,"description":921,"extension":288,"meta":922,"navigation":290,"path":122,"relatedTerms":923,"seo":927,"sources":930,"stem":935,"term":123,"__hash__":936},"glossary\u002Fglossary\u002Fsteam-sootblower.md",[703,704,705],"sootblower","steam soot blower","steam blower",{"type":53,"value":707,"toc":914},[708,714,718,781,785,871,875,881,883],[56,709,58,710,713],{},[60,711,712],{},"steam sootblower"," projects high-pressure steam (typically 17–35 bar) through nozzles onto boiler tube banks to dislodge accumulated soot, ash and slag. Steam sootblowing is the dominant traditional boiler-cleaning technology, with major suppliers including Diamond Power (now part of ANDRITZ), Clyde Bergemann, Babcock & Wilcox and Mitsubishi Heavy Industries.",[89,715,717],{"id":716},"types","Types",[104,719,720,730],{},[107,721,722],{},[110,723,724,727],{},[113,725,726],{},"Type",[113,728,729],{},"Use case",[125,731,732,743,754,762,773],{},[110,733,734,740],{},[130,735,736],{},[65,737,739],{"href":738},"\u002Fglossary\u002Fik-long-retract-sootblower","IK (long retract)",[130,741,742],{},"Convective superheater, reheater, generating bank",[110,744,745,751],{},[130,746,747],{},[65,748,750],{"href":749},"\u002Fglossary\u002Fir-rotary-sootblower","IR (rotary)",[130,752,753],{},"Air heater, deep convective banks",[110,755,756,759],{},[130,757,758],{},"Wall blowers",[130,760,761],{},"Furnace waterwalls, short reach",[110,763,764,770],{},[130,765,766],{},[65,767,769],{"href":768},"\u002Fglossary\u002Fretract-sootblower","Retractable",[130,771,772],{},"High-temperature service, withdrawn between uses",[110,774,775,778],{},[130,776,777],{},"Fixed",[130,779,780],{},"Air heaters, smaller industrial duty",[89,782,784],{"id":783},"trade-offs-vs-sonic-horns","Trade-offs vs sonic horns",[104,786,787,799],{},[107,788,789],{},[110,790,791,793,795],{},[113,792,115],{},[113,794,123],{},[113,796,797],{},[65,798,257],{"href":67},[125,800,801,811,820,831,842,853,863],{},[110,802,803,805,808],{},[130,804,132],{},[130,806,807],{},"High-pressure steam jet",[130,809,810],{},"Pulsed sound",[110,812,813,815,818],{},[130,814,165],{},[130,816,817],{},"Documented",[130,819,157],{},[110,821,822,825,828],{},[130,823,824],{},"Steam \u002F energy consumption",[130,826,827],{},"Significant boiler steam",[130,829,830],{},"Plant compressed air only",[110,832,833,836,839],{},[130,834,835],{},"Frequency",[130,837,838],{},"Per shift typical",[130,840,841],{},"Every few minutes",[110,843,844,847,850],{},[130,845,846],{},"Effective on bonded slag",[130,848,849],{},"Yes",[130,851,852],{},"No",[110,854,855,858,860],{},[130,856,857],{},"Effective on dry friable deposits",[130,859,849],{},[130,861,862],{},"Yes (and earlier in the consolidation cycle)",[110,864,865,867,869],{},[130,866,154],{},[130,868,849],{},[130,870,157],{},[89,872,874],{"id":873},"position-in-modern-cleaning-practice","Position in modern cleaning practice",[56,876,877,878,880],{},"Modern practice typically combines both: steam sootblowers for periodic deeper cleaning, ",[65,879,318],{"href":67}," for continuous prevention between sootblower cycles. The combination outperforms either alone on most convective-pass duty.",[89,882,250],{"id":249},[201,884,885,889,894,899,904,910],{},[204,886,887],{},[65,888,47],{"href":291},[204,890,891],{},[65,892,893],{"href":738},"IK long retract sootblower",[204,895,896],{},[65,897,898],{"href":749},"IR rotary sootblower",[204,900,901],{},[65,902,903],{"href":768},"Retract sootblower",[204,905,906],{},[65,907,909],{"href":908},"\u002Fglossary\u002Fwater-cannon","Water cannon",[204,911,912],{},[65,913,257],{"href":67},{"title":279,"searchDepth":280,"depth":280,"links":915},[916,917,918,919],{"id":716,"depth":280,"text":717},{"id":783,"depth":280,"text":784},{"id":873,"depth":280,"text":874},{"id":249,"depth":280,"text":250},"alternative-cleaning","A steam sootblower projects high-pressure steam (typically 17–35 bar) through nozzles onto boiler tube banks to dislodge accumulated soot, ash and slag. Steam sootblowing is the dominant traditional boiler-cleaning technology, with major suppliers including Diamond Power (now part of ANDRITZ), Clyde Bergemann, Babcock & Wilcox and Mitsubishi Heavy Industries.",{},[522,296,924,925,926,293],"ir-rotary-sootblower","retract-sootblower","water-cannon",{"title":928,"description":929},"Steam sootblower — the dominant traditional boiler-cleaning technology","A steam sootblower projects high-pressure steam jets onto boiler tube banks to dislodge soot and ash. Effective but causes documented tube erosion and consumes valuable boiler steam.",[931,934],{"title":932,"url":933},"Wikipedia — Soot blower","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSoot_blower",{"title":310,"url":311},"glossary\u002Fsteam-sootblower","XD3SJC43DwsBLNSvsJdGRtCtrjPlwojM--cj2MByKQo",{"id":938,"title":893,"aliases":939,"body":943,"category":920,"description":1035,"extension":288,"meta":1036,"navigation":290,"path":738,"relatedTerms":1037,"seo":1038,"sources":1041,"stem":1043,"term":893,"__hash__":1044},"glossary\u002Fglossary\u002Fik-long-retract-sootblower.md",[940,941,942],"IK sootblower","long retract sootblower","IK lance",{"type":53,"value":944,"toc":1030},[945,956,960,974,978,1004,1010,1012],[56,946,546,947,949,950,347,952,955],{},[60,948,893],{}," advances a long horizontal steam lance into the boiler's convective-pass gas flow, rotates the lance through a full revolution while emitting steam jets through paired side nozzles, then retracts the lance back into a parked position outside the flue gas. The IK type is the workhorse of convective ",[65,951,298],{"href":77},[65,953,954],{"href":81},"reheater"," cleaning on industrial and utility boilers.",[89,957,959],{"id":958},"why-it-dominates-the-convective-pass","Why it dominates the convective pass",[201,961,962,965,968,971],{},[204,963,964],{},"Steam jets reach deep between tube banks",[204,966,967],{},"Lance rotation cleans 360° of surrounding tubes per insertion",[204,969,970],{},"Lance is fully withdrawn between operations, protecting it from continuous high-temperature exposure",[204,972,973],{},"Mature design with several decades of operating experience",[89,975,977],{"id":976},"trade-offs","Trade-offs",[201,979,980,986,992,998],{},[204,981,982,985],{},[60,983,984],{},"Tube erosion"," — documented at nozzle impingement points and on the directly-opposite tube row",[204,987,988,991],{},[60,989,990],{},"Steam consumption"," — typical IK consumes 5–15 tonnes of medium-pressure steam per cycle",[204,993,994,997],{},[60,995,996],{},"Mechanical complexity"," — drive motor, lance, packing, nozzles, all require maintenance",[204,999,1000,1003],{},[60,1001,1002],{},"Lance bowing"," — long lances sag and bow under thermal cycling",[56,1005,1006,1009],{},[65,1007,1008],{"href":67},"Sonic horns"," complement IK sootblowers by providing continuous low-intensity cleaning between cycles, allowing the IK to fire less frequently and reducing its contribution to tube erosion.",[89,1011,250],{"id":249},[201,1013,1014,1018,1022,1026],{},[204,1015,1016],{},[65,1017,123],{"href":122},[204,1019,1020],{},[65,1021,898],{"href":749},[204,1023,1024],{},[65,1025,903],{"href":768},[204,1027,1028],{},[65,1029,277],{"href":77},{"title":279,"searchDepth":280,"depth":280,"links":1031},[1032,1033,1034],{"id":958,"depth":280,"text":959},{"id":976,"depth":280,"text":977},{"id":249,"depth":280,"text":250},"An IK long retract sootblower advances a long horizontal steam lance into the boiler's convective-pass gas flow, rotates the lance through a full revolution while emitting steam jets through paired side nozzles, then retracts the lance back into a parked position outside the flue gas. The IK type is the workhorse of convective superheater and reheater cleaning on industrial and utility boilers.",{},[295,924,925,298],{"title":1039,"description":1040},"IK long retract sootblower — the workhorse of convective-pass cleaning","An IK sootblower advances a long steam lance into the gas path, rotates through 360°, and retracts. The workhorse of convective superheater and reheater cleaning.",[1042],{"title":310,"url":311},"glossary\u002Fik-long-retract-sootblower","UWMSBNBfp6ftsYiv_bE3SEQ56Nm0HV9Mcho_ohsWXeQ",{"id":1046,"title":272,"aliases":1047,"body":1050,"category":1158,"description":1159,"extension":288,"meta":1160,"navigation":290,"path":72,"relatedTerms":1161,"seo":1165,"sources":1168,"stem":1172,"term":272,"__hash__":1173},"glossary\u002Fglossary\u002Feconomiser.md",[1048,1049],"economizer","feedwater economiser",{"type":53,"value":1051,"toc":1152},[1052,1073,1077,1080,1097,1100,1104,1109,1113,1121,1123],[56,1053,546,1054,1056,1057,1061,1062,1064,1065,1068,1069,352],{},[60,1055,297],{}," is the tube bank in a boiler's ",[65,1058,1060],{"href":1059},"\u002Fglossary\u002Fconvective-pass-backpass","convective pass"," that recovers residual heat from the flue gas by preheating boiler feedwater. It sits downstream of the ",[65,1063,954],{"href":81}," and upstream of the ",[65,1066,1067],{"href":85},"air heater","; economiser performance directly affects boiler ",[65,1070,1072],{"href":1071},"\u002Fglossary\u002Fheat-rate","heat rate",[89,1074,1076],{"id":1075},"fouling","Fouling",[56,1078,1079],{},"Two failure modes dominate:",[201,1081,1082,1088],{},[204,1083,1084,1087],{},[60,1085,1086],{},"Ash bridging"," between tubes — gas can no longer pass freely; ΔP across the economiser rises",[204,1089,1090,1096],{},[60,1091,1092],{},[65,1093,1095],{"href":1094},"\u002Fglossary\u002Flarge-particle-ash","Large-particle ash"," dropping out of the gas stream onto economiser hoppers — bridges and pluggage in the hopper itself",[56,1098,1099],{},"The first reduces gas-side heat transfer and forces gas channelling around the blocked area; the second causes hopper extraction to fail and back-pressures the gas path.",[89,1101,1103],{"id":1102},"sonic-horn-duty","Sonic-horn duty",[56,1105,1106,1108],{},[65,1107,1008],{"href":67}," mounted on the economiser shell and hopper are particularly effective because economiser deposits are dry, friable and respond well to acoustic dislodging. Plants commonly report 1–2% boiler-efficiency recovery after horn installation on heavily-fouled economisers.",[89,1110,1112],{"id":1111},"economiser-scr-adjacency","Economiser-SCR adjacency",[56,1114,1115,1116,1120],{},"On units with an upstream ",[65,1117,1119],{"href":1118},"\u002Fglossary\u002Fhigh-dust-low-dust-tail-end-scr","high-dust SCR",", the economiser receives the same large-particle ash that the SCR is designed against. LPA screens between SCR and economiser are common; sonic horns help keep both surfaces clean.",[89,1122,250],{"id":249},[201,1124,1125,1130,1135,1139,1144,1148],{},[204,1126,1127],{},[65,1128,1129],{"href":244},"Boiler",[204,1131,1132],{},[65,1133,1134],{"href":1059},"Convective pass \u002F backpass",[204,1136,1137],{},[65,1138,277],{"href":77},[204,1140,1141],{},[65,1142,1143],{"href":85},"Air heater",[204,1145,1146],{},[65,1147,1095],{"href":1094},[204,1149,1150],{},[65,1151,257],{"href":67},{"title":279,"searchDepth":280,"depth":280,"links":1153},[1154,1155,1156,1157],{"id":1075,"depth":280,"text":1076},{"id":1102,"depth":280,"text":1103},{"id":1111,"depth":280,"text":1112},{"id":249,"depth":280,"text":250},"boiler","An economiser is the tube bank in a boiler's convective pass that recovers residual heat from the flue gas by preheating boiler feedwater. It sits downstream of the reheater and upstream of the air heater; economiser performance directly affects boiler heat rate.",{},[1158,1162,298,1163,1164,293],"convective-pass-backpass","air-heater","large-particle-ash",{"title":1166,"description":1167},"Economiser — final tube bank that preheats feedwater with flue-gas heat","An economiser is the final tube bank in a boiler's convective pass that recovers heat from the flue gas by preheating feedwater. Ash bridging in the economiser is a routine cleaning challenge.",[1169],{"title":1170,"url":1171},"Wikipedia — Economizer","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEconomizer","glossary\u002Feconomiser","kh4Q3Eo9CNl35_b843VUXSI8fDZuiLZqLyB__NSzVH4",{"id":1175,"title":277,"aliases":1176,"body":1180,"category":1158,"description":1302,"extension":288,"meta":1303,"navigation":290,"path":77,"relatedTerms":1304,"seo":1306,"sources":1309,"stem":1313,"term":277,"__hash__":1314},"glossary\u002Fglossary\u002Fsuperheater.md",[78,1177,1178,1179],"primary superheater","secondary superheater","finishing superheater",{"type":53,"value":1181,"toc":1297},[1182,1190,1192,1230,1234,1243,1265,1268,1270],[56,1183,58,1184,1186,1187,1189],{},[60,1185,298],{}," is a tube bank in a boiler's ",[65,1188,1060],{"href":1059}," that raises the steam temperature beyond its saturation point using residual heat from the flue gas. Most utility boilers have at least two superheater stages: a primary superheater (cooler gas) and a secondary or finishing superheater (closest to the furnace, hottest gas).",[89,1191,1076],{"id":1075},[201,1193,1194,1208,1214],{},[204,1195,1196,1202,1203,1207],{},[60,1197,1198],{},[65,1199,1201],{"href":1200},"\u002Fglossary\u002Fslagging","Slagging"," on the finishing superheater — semi-molten ash from the ",[65,1204,1206],{"href":1205},"\u002Fglossary\u002Ffurnace","furnace"," deposits on the hottest tubes",[204,1209,1210,1213],{},[60,1211,1212],{},"Bonded ash"," on the primary superheater — drier deposits that sinter under sustained temperature",[204,1215,1216,1219,1220,74,1223,347,1226,1229],{},[60,1217,1218],{},"Sodium \u002F potassium-rich deposits"," on ",[65,1221,1222],{"href":231},"biomass",[65,1224,1225],{"href":231},"WtE",[65,1227,1228],{"href":208},"recovery boilers"," — sticky, low-melting, aggressive",[89,1231,1233],{"id":1232},"cleaning","Cleaning",[56,1235,1236,1237,347,1240,1242],{},"Steam ",[65,1238,1239],{"href":122},"sootblowers",[65,1241,318],{"href":67}," work together:",[201,1244,1245,1248,1255],{},[204,1246,1247],{},"Sootblowers attack hard slag on the finishing superheater",[204,1249,1250,1251,1254],{},"Sonic horns (",[65,1252,1253],{"href":465},"60–125 Hz",") keep dry ash from consolidating on the primary superheater and convective superheater",[204,1256,1257,1260,1261,1264],{},[65,1258,1259],{"href":674},"Infrasonic cleaners"," below 30 Hz are used on deep ",[65,1262,1263],{"href":208},"recovery-boiler"," superheater cavities",[56,1266,1267],{},"The combination extends the interval between major water-washes and reduces steam-attemperation requirements that mask deteriorating heat transfer.",[89,1269,250],{"id":249},[201,1271,1272,1276,1280,1285,1289,1293],{},[204,1273,1274],{},[65,1275,1129],{"href":244},[204,1277,1278],{},[65,1279,1134],{"href":1059},[204,1281,1282],{},[65,1283,1284],{"href":81},"Reheater",[204,1286,1287],{},[65,1288,1201],{"href":1200},[204,1290,1291],{},[65,1292,257],{"href":67},[204,1294,1295],{},[65,1296,47],{"href":291},{"title":279,"searchDepth":280,"depth":280,"links":1298},[1299,1300,1301],{"id":1075,"depth":280,"text":1076},{"id":1232,"depth":280,"text":1233},{"id":249,"depth":280,"text":250},"A superheater is a tube bank in a boiler's convective pass that raises the steam temperature beyond its saturation point using residual heat from the flue gas. Most utility boilers have at least two superheater stages: a primary superheater (cooler gas) and a secondary or finishing superheater (closest to the furnace, hottest gas).",{},[1158,1162,954,1305,293,522],"slagging",{"title":1307,"description":1308},"Superheater — boiler tube bank that raises steam temperature beyond saturation","A superheater is a tube bank that raises steam temperature beyond the saturation point using flue-gas heat. Sticky alkali ash and slag deposits are the dominant fouling concerns.",[1310],{"title":1311,"url":1312},"Wikipedia — Superheater","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSuperheater","glossary\u002Fsuperheater","hYVXyyVmlWCU3AXfAl0l3YAhHpWty_akkDsBJGC_NDs",1782613734711]