[{"data":1,"prerenderedAt":767},["ShallowReactive",2],{"site-footer-common":3,"glossary:ir-rotary-sootblower":45,"glossary-related:ir-rotary-sootblower":228},{"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":51,"category":209,"description":210,"extension":211,"meta":212,"navigation":213,"path":214,"relatedTerms":215,"seo":219,"sources":222,"stem":226,"term":47,"__hash__":227},"glossary\u002Fglossary\u002Fir-rotary-sootblower.md","IR rotary sootblower",[49,50],"IR sootblower","rotary sootblower",{"type":52,"value":53,"toc":202},"minimark",[54,68,73,94,98,178,181,185],[55,56,57,58,61,62,67],"p",{},"An ",[59,60,47],"strong",{}," is a short, fixed-position rotating steam lance with permanently-installed nozzles. Unlike the ",[63,64,66],"a",{"href":65},"\u002Fglossary\u002Fik-long-retract-sootblower","IK long-retract design",", the IR lance does not withdraw between operations — it rotates in place, projecting steam onto adjacent tube banks within its rotation radius.",[69,70,72],"h2",{"id":71},"typical-applications","Typical applications",[74,75,76,84,87],"ul",{},[77,78,79,83],"li",{},[63,80,82],{"href":81},"\u002Fglossary\u002Fair-heater","Air heater"," cold-end cleaning",[77,85,86],{},"Deep convective superheater banks where insertion is impractical",[77,88,89,93],{},[63,90,92],{"href":91},"\u002Fglossary\u002Frecovery-boiler","Recovery boilers"," — used alongside IK retract designs",[69,95,97],{"id":96},"trade-offs-vs-ik","Trade-offs vs IK",[99,100,101,119],"table",{},[102,103,104],"thead",{},[105,106,107,111,114],"tr",{},[108,109,110],"th",{},"Attribute",[108,112,113],{},"IR rotary",[108,115,116],{},[63,117,118],{"href":65},"IK long retract",[120,121,122,134,145,156,167],"tbody",{},[105,123,124,128,131],{},[125,126,127],"td",{},"Lance withdrawal",[125,129,130],{},"Continuous in flue gas",[125,132,133],{},"Withdrawn between cycles",[105,135,136,139,142],{},[125,137,138],{},"Reach",[125,140,141],{},"Short, fixed radius",[125,143,144],{},"Long, traverses across pass",[105,146,147,150,153],{},[125,148,149],{},"Continuous-exposure damage",[125,151,152],{},"Yes",[125,154,155],{},"No",[105,157,158,161,164],{},[125,159,160],{},"Mechanical complexity",[125,162,163],{},"Lower",[125,165,166],{},"Higher",[105,168,169,172,175],{},[125,170,171],{},"Coverage",[125,173,174],{},"Local",[125,176,177],{},"Cross-section of pass",[55,179,180],{},"IR lances suffer accelerated wear from continuous flue-gas exposure compared with IK retracts but are mechanically simpler and suit applications where the cleaning zone is fixed.",[69,182,184],{"id":183},"related-terms","Related terms",[74,186,187,193,198],{},[77,188,189],{},[63,190,192],{"href":191},"\u002Fglossary\u002Fsteam-sootblower","Steam sootblower",[77,194,195],{},[63,196,197],{"href":65},"IK long retract sootblower",[77,199,200],{},[63,201,82],{"href":81},{"title":203,"searchDepth":204,"depth":204,"links":205},"",2,[206,207,208],{"id":71,"depth":204,"text":72},{"id":96,"depth":204,"text":97},{"id":183,"depth":204,"text":184},"alternative-cleaning","An IR rotary sootblower is a short, fixed-position rotating steam lance with permanently-installed nozzles. Unlike the IK long-retract design, the IR lance does not withdraw between operations — it rotates in place, projecting steam onto adjacent tube banks within its rotation radius.","md",{},true,"\u002Fglossary\u002Fir-rotary-sootblower",[216,217,218],"steam-sootblower","ik-long-retract-sootblower","air-heater",{"title":220,"description":221},"IR rotary sootblower — short rotating lance for air heaters and convective banks","An IR sootblower is a short fixed rotating lance with permanently-positioned nozzles. Common on air heaters and deeper convective banks; smaller than IK long retracts.",[223],{"title":224,"url":225},"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\u002Fir-rotary-sootblower","IrstHhTcdAMm6Uwt6MUrNzBrscTKxXs-G8HXxpnEGgY",[229,471,583],{"id":230,"title":192,"aliases":231,"body":235,"category":209,"description":453,"extension":211,"meta":454,"navigation":213,"path":191,"relatedTerms":455,"seo":461,"sources":464,"stem":469,"term":192,"__hash__":470},"glossary\u002Fglossary\u002Fsteam-sootblower.md",[232,233,234],"sootblower","steam soot blower","steam blower",{"type":52,"value":236,"toc":447},[237,244,248,309,313,403,407,414,416],[55,238,239,240,243],{},"A ",[59,241,242],{},"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.",[69,245,247],{"id":246},"types","Types",[99,249,250,260],{},[102,251,252],{},[105,253,254,257],{},[108,255,256],{},"Type",[108,258,259],{},"Use case",[120,261,262,272,282,290,301],{},[105,263,264,269],{},[125,265,266],{},[63,267,268],{"href":65},"IK (long retract)",[125,270,271],{},"Convective superheater, reheater, generating bank",[105,273,274,279],{},[125,275,276],{},[63,277,278],{"href":214},"IR (rotary)",[125,280,281],{},"Air heater, deep convective banks",[105,283,284,287],{},[125,285,286],{},"Wall blowers",[125,288,289],{},"Furnace waterwalls, short reach",[105,291,292,298],{},[125,293,294],{},[63,295,297],{"href":296},"\u002Fglossary\u002Fretract-sootblower","Retractable",[125,299,300],{},"High-temperature service, withdrawn between uses",[105,302,303,306],{},[125,304,305],{},"Fixed",[125,307,308],{},"Air heaters, smaller industrial duty",[69,310,312],{"id":311},"trade-offs-vs-sonic-horns","Trade-offs vs sonic horns",[99,314,315,329],{},[102,316,317],{},[105,318,319,321,323],{},[108,320,110],{},[108,322,192],{},[108,324,325],{},[63,326,328],{"href":327},"\u002Fglossary\u002Fsonic-horn","Sonic horn",[120,330,331,342,353,364,375,384,394],{},[105,332,333,336,339],{},[125,334,335],{},"Cleaning medium",[125,337,338],{},"High-pressure steam jet",[125,340,341],{},"Pulsed sound",[105,343,344,347,350],{},[125,345,346],{},"Tube erosion risk",[125,348,349],{},"Documented",[125,351,352],{},"None",[105,354,355,358,361],{},[125,356,357],{},"Steam \u002F energy consumption",[125,359,360],{},"Significant boiler steam",[125,362,363],{},"Plant compressed air only",[105,365,366,369,372],{},[125,367,368],{},"Frequency",[125,370,371],{},"Per shift typical",[125,373,374],{},"Every few minutes",[105,376,377,380,382],{},[125,378,379],{},"Effective on bonded slag",[125,381,152],{},[125,383,155],{},[105,385,386,389,391],{},[125,387,388],{},"Effective on dry friable deposits",[125,390,152],{},[125,392,393],{},"Yes (and earlier in the consolidation cycle)",[105,395,396,399,401],{},[125,397,398],{},"Moving parts in flue gas",[125,400,152],{},[125,402,352],{},[69,404,406],{"id":405},"position-in-modern-cleaning-practice","Position in modern cleaning practice",[55,408,409,410,413],{},"Modern practice typically combines both: steam sootblowers for periodic deeper cleaning, ",[63,411,412],{"href":327},"sonic horns"," for continuous prevention between sootblower cycles. The combination outperforms either alone on most convective-pass duty.",[69,415,184],{"id":183},[74,417,418,424,428,432,437,443],{},[77,419,420],{},[63,421,423],{"href":422},"\u002Fglossary\u002Fsonic-sootblower","Sonic sootblower",[77,425,426],{},[63,427,197],{"href":65},[77,429,430],{},[63,431,47],{"href":214},[77,433,434],{},[63,435,436],{"href":296},"Retract sootblower",[77,438,439],{},[63,440,442],{"href":441},"\u002Fglossary\u002Fwater-cannon","Water cannon",[77,444,445],{},[63,446,328],{"href":327},{"title":203,"searchDepth":204,"depth":204,"links":448},[449,450,451,452],{"id":246,"depth":204,"text":247},{"id":311,"depth":204,"text":312},{"id":405,"depth":204,"text":406},{"id":183,"depth":204,"text":184},"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.",{},[456,217,457,458,459,460],"sonic-sootblower","ir-rotary-sootblower","retract-sootblower","water-cannon","sonic-horn",{"title":462,"description":463},"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.",[465,468],{"title":466,"url":467},"Wikipedia — Soot blower","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSoot_blower",{"title":224,"url":225},"glossary\u002Fsteam-sootblower","XD3SJC43DwsBLNSvsJdGRtCtrjPlwojM--cj2MByKQo",{"id":472,"title":197,"aliases":473,"body":477,"category":209,"description":573,"extension":211,"meta":574,"navigation":213,"path":65,"relatedTerms":575,"seo":576,"sources":579,"stem":581,"term":197,"__hash__":582},"glossary\u002Fglossary\u002Fik-long-retract-sootblower.md",[474,475,476],"IK sootblower","long retract sootblower","IK lance",{"type":52,"value":478,"toc":568},[479,494,498,512,516,541,547,549],[55,480,57,481,483,484,488,489,493],{},[59,482,197],{}," 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 ",[63,485,487],{"href":486},"\u002Fglossary\u002Fsuperheater","superheater"," and ",[63,490,492],{"href":491},"\u002Fglossary\u002Freheater","reheater"," cleaning on industrial and utility boilers.",[69,495,497],{"id":496},"why-it-dominates-the-convective-pass","Why it dominates the convective pass",[74,499,500,503,506,509],{},[77,501,502],{},"Steam jets reach deep between tube banks",[77,504,505],{},"Lance rotation cleans 360° of surrounding tubes per insertion",[77,507,508],{},"Lance is fully withdrawn between operations, protecting it from continuous high-temperature exposure",[77,510,511],{},"Mature design with several decades of operating experience",[69,513,515],{"id":514},"trade-offs","Trade-offs",[74,517,518,524,530,535],{},[77,519,520,523],{},[59,521,522],{},"Tube erosion"," — documented at nozzle impingement points and on the directly-opposite tube row",[77,525,526,529],{},[59,527,528],{},"Steam consumption"," — typical IK consumes 5–15 tonnes of medium-pressure steam per cycle",[77,531,532,534],{},[59,533,160],{}," — drive motor, lance, packing, nozzles, all require maintenance",[77,536,537,540],{},[59,538,539],{},"Lance bowing"," — long lances sag and bow under thermal cycling",[55,542,543,546],{},[63,544,545],{"href":327},"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.",[69,548,184],{"id":183},[74,550,551,555,559,563],{},[77,552,553],{},[63,554,192],{"href":191},[77,556,557],{},[63,558,47],{"href":214},[77,560,561],{},[63,562,436],{"href":296},[77,564,565],{},[63,566,567],{"href":486},"Superheater",{"title":203,"searchDepth":204,"depth":204,"links":569},[570,571,572],{"id":496,"depth":204,"text":497},{"id":514,"depth":204,"text":515},{"id":183,"depth":204,"text":184},"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.",{},[216,457,458,487],{"title":577,"description":578},"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.",[580],{"title":224,"url":225},"glossary\u002Fik-long-retract-sootblower","UWMSBNBfp6ftsYiv_bE3SEQ56Nm0HV9Mcho_ohsWXeQ",{"id":584,"title":585,"aliases":586,"body":590,"category":750,"description":751,"extension":211,"meta":752,"navigation":213,"path":81,"relatedTerms":753,"seo":758,"sources":761,"stem":765,"term":82,"__hash__":766},"glossary\u002Fglossary\u002Fair-heater.md","Air heater (APH)",[587,588,589],"air preheater","APH","air heaters",{"type":52,"value":591,"toc":744},[592,606,610,653,657,670,700,704,710,712],[55,593,57,594,597,598,600,601,605],{},[59,595,596],{},"air heater"," — also called an ",[59,599,587],{}," (APH) — is the final heat-recovery device in a boiler's ",[63,602,604],{"href":603},"\u002Fglossary\u002Fconvective-pass-backpass","convective pass",", recovering low-grade heat from cooling flue gas to preheat the combustion air. APHs lift overall boiler efficiency by 5–10 percentage points and are critical to heat-rate performance.",[69,607,609],{"id":608},"aph-types","APH types",[99,611,612,621],{},[102,613,614],{},[105,615,616,618],{},[108,617,256],{},[108,619,620],{},"Description",[120,622,623,634,645],{},[105,624,625,631],{},[125,626,627],{},[63,628,630],{"href":629},"\u002Fglossary\u002Fljungstrom-air-preheater","Ljungström \u002F regenerative",[125,632,633],{},"Rotating matrix of heat-exchange baskets cycling between gas and air sides",[105,635,636,642],{},[125,637,638],{},[63,639,641],{"href":640},"\u002Fglossary\u002Ftubular-air-preheater","Tubular",[125,643,644],{},"Fixed tube bundle with flue gas through tubes, air around them",[105,646,647,650],{},[125,648,649],{},"Plate-type",[125,651,652],{},"Cross-flow plate exchanger; smaller industrial duty",[69,654,656],{"id":655},"the-cold-end-problem","The cold-end problem",[55,658,659,660,664,665,669],{},"The APH cold end is the coolest point in the flue-gas path before the ",[63,661,663],{"href":662},"\u002Fglossary\u002Felectrostatic-precipitator","ESP"," \u002F ",[63,666,668],{"href":667},"\u002Fglossary\u002Fbaghouse","baghouse",". Two related failure modes dominate:",[74,671,672,686],{},[77,673,674,680,681,685],{},[59,675,676],{},[63,677,679],{"href":678},"\u002Fglossary\u002Fammonium-bisulphate","Ammonium bisulphate (ABS)"," fouling on boilers with upstream ",[63,682,684],{"href":683},"\u002Fglossary\u002Fselective-catalytic-reduction","SCR",": sticky deposits plug Ljungström baskets and tubular APH tubes",[77,687,688,694,695,699],{},[59,689,690],{},[63,691,693],{"href":692},"\u002Fglossary\u002Fcold-end-corrosion-dew-point-corrosion","Cold-end corrosion"," below the ",[63,696,698],{"href":697},"\u002Fglossary\u002Facid-dew-point","acid dew point"," — sulphuric acid condenses and attacks baskets and tubes",[69,701,703],{"id":702},"why-sonic-horns-are-routinely-specified-on-aphs","Why sonic horns are routinely specified on APHs",[55,705,706,707,709],{},"ABS fouling is the single most common reason plants install ",[63,708,412],{"href":327}," on the cold end. Continuous low-amplitude vibration prevents ABS from consolidating between water-wash campaigns, extending the campaign interval from quarterly to annual and avoiding capacity-derate excursions.",[69,711,184],{"id":183},[74,713,714,720,725,730,735,740],{},[77,715,716],{},[63,717,719],{"href":718},"\u002Fglossary\u002Fboiler","Boiler",[77,721,722],{},[63,723,724],{"href":629},"Ljungström air preheater",[77,726,727],{},[63,728,729],{"href":640},"Tubular air preheater",[77,731,732],{},[63,733,734],{"href":678},"Ammonium bisulphate",[77,736,737],{},[63,738,739],{"href":692},"Cold-end corrosion \u002F dew-point corrosion",[77,741,742],{},[63,743,328],{"href":327},{"title":203,"searchDepth":204,"depth":204,"links":745},[746,747,748,749],{"id":608,"depth":204,"text":609},{"id":655,"depth":204,"text":656},{"id":702,"depth":204,"text":703},{"id":183,"depth":204,"text":184},"boiler","An air heater — also called an air preheater (APH) — is the final heat-recovery device in a boiler's convective pass, recovering low-grade heat from cooling flue gas to preheat the combustion air. APHs lift overall boiler efficiency by 5–10 percentage points and are critical to heat-rate performance.",{},[750,754,755,756,757,460],"ljungstrom-air-preheater","tubular-air-preheater","ammonium-bisulphate","cold-end-corrosion-dew-point-corrosion",{"title":759,"description":760},"Air heater (APH) — final flue-gas heat-recovery device before the stack","An air heater (also air preheater, APH) recovers low-grade heat from flue gas to preheat combustion air. Cold-end fouling and corrosion are the dominant operational challenges.",[762],{"title":763,"url":764},"Wikipedia — Air preheater","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAir_preheater","glossary\u002Fair-heater","3pBQ2ZyiQ7VOKuf9rxsx43EFarkhgykVhd2amXg0TMY",1782613719107]