[{"data":1,"prerenderedAt":793},["ShallowReactive",2],{"site-footer-common":3,"glossary:water-cannon":45,"glossary-related:water-cannon":180},{"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":162,"description":163,"extension":164,"meta":165,"navigation":166,"path":167,"relatedTerms":168,"seo":171,"sources":174,"stem":178,"term":47,"__hash__":179},"glossary\u002Fglossary\u002Fwater-cannon.md","Water cannon",[49,50,51],"smart water cannon","water gun","water lance (waterwall)",{"type":53,"value":54,"toc":155},"minimark",[55,75,80,88,92,120,127,131],[56,57,58,59,63,64,69,70,74],"p",{},"A ",[60,61,62],"strong",{},"water cannon"," projects a high-pressure water jet onto boiler ",[65,66,68],"a",{"href":67},"\u002Fglossary\u002Fwaterwall","waterwall"," tubes to crack slag deposits by thermal shock. The rapid temperature differential between the cool water and the hot slag fractures the bonded slag layer, allowing the next portion to fall away. Water cannons are the standard cleaning tool for furnace ",[65,71,73],{"href":72},"\u002Fglossary\u002Fslagging","slagging"," on coal-fired and biomass utility boilers.",[76,77,79],"h2",{"id":78},"aimed-shots-not-sweeps","Aimed shots, not sweeps",[56,81,82,83,87],{},"Modern ",[84,85,86],"em",{},"smart"," water cannons (notably Clyde Bergemann) are computer-controlled to aim specific shot patterns at known fouling zones. Operators see a heat-flux map from radiant-section thermocouples; the cannon fires shots calibrated to the slag thickness in each zone. Compared with manual aiming, this dramatically reduces water consumption and tube-fatigue risk.",[76,89,91],{"id":90},"trade-offs","Trade-offs",[93,94,95,102,108,114],"ul",{},[96,97,98,101],"li",{},[60,99,100],{},"Tube fatigue"," — repeated thermal cycling can crack tubes at the impingement zone over years of service",[96,103,104,107],{},[60,105,106],{},"Water consumption"," — substantial volumes of demineralised water needed",[96,109,110,113],{},[60,111,112],{},"Slag knock-down hazard"," — large fallen slag pieces can damage waterwall lower zones",[96,115,116,119],{},[60,117,118],{},"Effective only on slag"," — does not address dry friable deposits on convective surfaces",[56,121,122,126],{},[65,123,125],{"href":124},"\u002Fglossary\u002Fsonic-horn","Sonic horns"," are not effective on furnace slag and water cannons are not effective on dry convective-pass deposits. The two technologies serve different zones of the boiler and do not directly compete.",[76,128,130],{"id":129},"related-terms","Related terms",[93,132,133,139,144,149],{},[96,134,135],{},[65,136,138],{"href":137},"\u002Fglossary\u002Fwater-lance","Water lance",[96,140,141],{},[65,142,143],{"href":67},"Waterwall",[96,145,146],{},[65,147,148],{"href":72},"Slagging",[96,150,151],{},[65,152,154],{"href":153},"\u002Fglossary\u002Fsteam-sootblower","Steam sootblower",{"title":156,"searchDepth":157,"depth":157,"links":158},"",2,[159,160,161],{"id":78,"depth":157,"text":79},{"id":90,"depth":157,"text":91},{"id":129,"depth":157,"text":130},"alternative-cleaning","A water cannon projects a high-pressure water jet onto boiler waterwall tubes to crack slag deposits by thermal shock. The rapid temperature differential between the cool water and the hot slag fractures the bonded slag layer, allowing the next portion to fall away. Water cannons are the standard cleaning tool for furnace slagging on coal-fired and biomass utility boilers.","md",{},true,"\u002Fglossary\u002Fwater-cannon",[169,68,73,170],"water-lance","steam-sootblower",{"title":172,"description":173},"Water cannon — high-pressure water lance for boiler waterwall slag","A water cannon projects a high-pressure water jet onto boiler waterwalls to crack slag deposits by thermal shock. The standard cleaning tool for furnace slag, with care for tube fatigue.",[175],{"title":176,"url":177},"Clyde Industries — Water Cannon","https:\u002F\u002Fclyde-industries.com\u002Fproducts-and-solutions\u002Fwater-cannon","glossary\u002Fwater-cannon","B1ZdzNxHCFNLcoio5f730_KTMBbHrbp8pSD45i2XgiU",[181,262,393,551],{"id":182,"title":138,"aliases":183,"body":186,"category":162,"description":248,"extension":164,"meta":249,"navigation":166,"path":137,"relatedTerms":250,"seo":253,"sources":256,"stem":260,"term":138,"__hash__":261},"glossary\u002Fglossary\u002Fwater-lance.md",[184,185],"water lances","hydraulic lance",{"type":53,"value":187,"toc":244},[188,197,201,221,226,228],[56,189,58,190,193,194,196],{},[60,191,192],{},"water lance"," is a handheld or fixed water-jet cleaning device used either during boiler outages (handheld manual variant) or, in fixed mechanised designs (notably from Bergemann), during operation on selected slag-melt zones. The fixed mechanised water lance differs from a ",[65,195,62],{"href":167}," primarily in lance length, reach and shot pattern — both technologies rely on thermal-shock cracking of slag.",[76,198,200],{"id":199},"where-water-lances-are-used","Where water lances are used",[93,202,203,209,215],{},[96,204,205,208],{},[60,206,207],{},"Outage cleaning"," — handheld lances projecting water into boiler internals after shutdown",[96,210,211,214],{},[60,212,213],{},"Slag-prone zones during operation"," — fixed mechanised lances on coal-fired boiler furnace exits and reheater inlet zones",[96,216,217,220],{},[60,218,219],{},"Cement-plant preheater cleaning"," — manual water-lancing during planned outages on kiln-inlet build-up",[56,222,223,225],{},[65,224,125],{"href":124}," reduce the frequency of water-lancing campaigns by preventing the accumulation that water lances are deployed to remove.",[76,227,130],{"id":129},[93,229,230,234,238],{},[96,231,232],{},[65,233,47],{"href":167},[96,235,236],{},[65,237,143],{"href":67},[96,239,240],{},[65,241,243],{"href":242},"\u002Fglossary\u002Fmanual-lancing","Manual lancing",{"title":156,"searchDepth":157,"depth":157,"links":245},[246,247],{"id":199,"depth":157,"text":200},{"id":129,"depth":157,"text":130},"A water lance is a handheld or fixed water-jet cleaning device used either during boiler outages (handheld manual variant) or, in fixed mechanised designs (notably from Bergemann), during operation on selected slag-melt zones. The fixed mechanised water lance differs from a water cannon primarily in lance length, reach and shot pattern — both technologies rely on thermal-shock cracking of slag.",{},[251,68,252],"water-cannon","manual-lancing",{"title":254,"description":255},"Water lance — handheld or fixed water jet for boiler cleaning","A water lance is a handheld or fixed water-jet cleaning device used during boiler outages or, in fixed designs, for slag-melt zones during operation.",[257],{"title":258,"url":259},"Wikipedia — Soot blower","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSoot_blower","glossary\u002Fwater-lance","_UHuQxNAjCSzXAcvoICoPcNf5xX6t9fPdViJEE5XCkQ",{"id":263,"title":143,"aliases":264,"body":268,"category":379,"description":380,"extension":164,"meta":381,"navigation":166,"path":67,"relatedTerms":382,"seo":384,"sources":387,"stem":391,"term":143,"__hash__":392},"glossary\u002Fglossary\u002Fwaterwall.md",[265,266,267],"water wall","membrane wall","furnace wall",{"type":53,"value":269,"toc":372},[270,281,285,288,292,299,303,308,333,337,344,346],[56,271,272,275,276,280],{},[60,273,274],{},"Waterwalls"," are panels of vertical evaporator tubes welded into a gas-tight membrane that line the ",[65,277,279],{"href":278},"\u002Fglossary\u002Ffurnace","furnace"," walls of an industrial boiler. They absorb the radiant heat of the burning fuel and produce most of the boiler's steam.",[76,282,284],{"id":283},"construction","Construction",[56,286,287],{},"Adjacent tubes are connected by a thin steel fin running their full length, forming a continuous gas-tight pressure boundary. Tube diameters are typically 38–63 mm, on 50–80 mm pitches. Wall sections can be hung from headers above (suspension waterwalls) or supported from below (sit-on).",[76,289,291],{"id":290},"fouling-slag-not-ash","Fouling: slag, not ash",[56,293,294,295,298],{},"Furnace temperatures and radiant heat transfer mean that any ash that hits the waterwall is partly molten. Cooled rapidly against the tube wall, it solidifies as ",[65,296,297],{"href":72},"slag",". Slag is hard, bonded, and grows in characteristic patterns: thicker near burner clusters, thinner in cold corners.",[76,300,302],{"id":301},"cleaning-waterwalls","Cleaning waterwalls",[56,304,305,307],{},[65,306,125],{"href":124}," are not effective on hard furnace slag — the deposit is too well-bonded for acoustic energy to dislodge. The standard cleaning tools are:",[93,309,310,318,324],{},[96,311,312,317],{},[60,313,314],{},[65,315,316],{"href":167},"Water cannons"," — high-pressure water lances mounted on the waterwall, fired at specific tube sections",[96,319,320,323],{},[60,321,322],{},"Wall blowers"," — short retract sootblowers with multiple nozzles",[96,325,326,332],{},[60,327,328],{},[65,329,331],{"href":330},"\u002Fglossary\u002Fexplosive-deslagging","Explosive deslagging"," — periodic shock cleaning for severe build-up",[76,334,336],{"id":335},"tube-failures-on-waterwalls","Tube failures on waterwalls",[56,338,339,343],{},[65,340,342],{"href":341},"\u002Fglossary\u002Ftube-erosion-tube-wastage","Tube erosion"," and tube wastage on waterwalls are the leading cause of forced outages on coal-fired and biomass boilers. Mitigation is largely combustion-control rather than cleaning, but excessive aggressive cleaning (especially water cannons) contributes to thermal-fatigue cracking.",[76,345,130],{"id":129},[93,347,348,354,359,363,368],{},[96,349,350],{},[65,351,353],{"href":352},"\u002Fglossary\u002Fboiler","Boiler",[96,355,356],{},[65,357,358],{"href":278},"Furnace",[96,360,361],{},[65,362,148],{"href":72},[96,364,365],{},[65,366,367],{"href":341},"Tube erosion \u002F tube wastage",[96,369,370],{},[65,371,47],{"href":167},{"title":156,"searchDepth":157,"depth":157,"links":373},[374,375,376,377,378],{"id":283,"depth":157,"text":284},{"id":290,"depth":157,"text":291},{"id":301,"depth":157,"text":302},{"id":335,"depth":157,"text":336},{"id":129,"depth":157,"text":130},"boiler","Waterwalls are panels of vertical evaporator tubes welded into a gas-tight membrane that line the furnace walls of an industrial boiler. They absorb the radiant heat of the burning fuel and produce most of the boiler's steam.",{},[379,279,73,383,251],"tube-erosion-tube-wastage",{"title":385,"description":386},"Waterwall — tube panels lining the furnace of a boiler","Waterwalls are panels of vertical evaporator tubes welded into a gas-tight membrane that line the furnace. They absorb radiant heat and produce most of the boiler's steam.",[388],{"title":389,"url":390},"Wikipedia — Water-tube boiler","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FWater-tube_boiler","glossary\u002Fwaterwall","rkJ624Wtxzhq9pJlFII6R5mMnwza1b97OTUWYv_7eng",{"id":394,"title":148,"aliases":395,"body":399,"category":421,"description":539,"extension":164,"meta":540,"navigation":166,"path":72,"relatedTerms":541,"seo":542,"sources":545,"stem":549,"term":148,"__hash__":550},"glossary\u002Fglossary\u002Fslagging.md",[396,397,398],"slag deposit","slag bonding","molten slag deposit",{"type":53,"value":400,"toc":534},[401,423,427,441,445,503,508,510],[56,402,403,405,406,408,409,412,413,417,418,422],{},[60,404,148],{}," is the deposition of molten or semi-molten ash on high-temperature surfaces inside a boiler — primarily the ",[65,407,279],{"href":278}," ",[65,410,411],{"href":67},"waterwalls"," and the finishing ",[65,414,416],{"href":415},"\u002Fglossary\u002Fsuperheater","superheater",". Slag is distinguished from ",[65,419,421],{"href":420},"\u002Fglossary\u002Ffouling","fouling"," generally by being formed at temperatures high enough to melt the ash; once cooled against the tube it solidifies as a hard, bonded layer.",[76,424,426],{"id":425},"why-slag-is-hard-to-clean","Why slag is hard to clean",[93,428,429,432,435,438],{},[96,430,431],{},"Bonded directly to the tube — not a loose surface deposit",[96,433,434],{},"Hardness comparable to the tube metal itself",[96,436,437],{},"Resists acoustic cleaning — sound energy cannot dislodge a bonded interface",[96,439,440],{},"Removable only with high-energy mechanical methods",[76,442,444],{"id":443},"cleaning-options","Cleaning options",[446,447,448,461],"table",{},[449,450,451],"thead",{},[452,453,454,458],"tr",{},[455,456,457],"th",{},"Tool",[455,459,460],{},"Use case",[462,463,464,474,486,495],"tbody",{},[452,465,466,471],{},[467,468,469],"td",{},[65,470,47],{"href":167},[467,472,473],{},"Standard for furnace waterwall slag",[452,475,476,483],{},[467,477,478,479],{},"Steam ",[65,480,482],{"href":481},"\u002Fglossary\u002Fretract-sootblower","retract sootblower",[467,484,485],{},"Finishing superheater slag, with care for tube erosion",[452,487,488,492],{},[467,489,490],{},[65,491,331],{"href":330},[467,493,494],{},"Severe build-up, periodic intervention",[452,496,497,500],{},[467,498,499],{},"Manual lancing (offline)",[467,501,502],{},"During major outages",[56,504,505,507],{},[65,506,125],{"href":124}," are not effective on furnace slag, but they are effective immediately downstream where deposits cool to a friable consistency. Sylio's value on slag-prone units lies in the convective pass, not in the furnace itself.",[76,509,130],{"id":129},[93,511,512,516,521,525,530],{},[96,513,514],{},[65,515,143],{"href":67},[96,517,518],{},[65,519,520],{"href":415},"Superheater",[96,522,523],{},[65,524,358],{"href":278},[96,526,527],{},[65,528,529],{"href":420},"Fouling",[96,531,532],{},[65,533,47],{"href":167},{"title":156,"searchDepth":157,"depth":157,"links":535},[536,537,538],{"id":425,"depth":157,"text":426},{"id":443,"depth":157,"text":444},{"id":129,"depth":157,"text":130},"Slagging is the deposition of molten or semi-molten ash on high-temperature surfaces inside a boiler — primarily the furnace waterwalls and the finishing superheater. Slag is distinguished from fouling generally by being formed at temperatures high enough to melt the ash; once cooled against the tube it solidifies as a hard, bonded layer.",{},[68,416,279,421,251],{"title":543,"description":544},"Slagging — molten ash bonding to high-temperature boiler surfaces","Slagging is the deposition of molten or semi-molten ash on radiant and high-temperature surfaces in the boiler furnace. Hard, bonded; usually requires water cannons or explosive deslagging.",[546],{"title":547,"url":548},"Power Engineering — How to Deal with Ceaseless Slagging","https:\u002F\u002Fwww.power-eng.com\u002Foperations-maintenance\u002Fhow-to-deal-with-ceaseless-slagging\u002F","glossary\u002Fslagging","ETHZyOpE6ep9L5Ko6HI45eGDis7f8SAGpAWqJo3Z414",{"id":552,"title":154,"aliases":553,"body":557,"category":162,"description":775,"extension":164,"meta":776,"navigation":166,"path":153,"relatedTerms":777,"seo":783,"sources":786,"stem":791,"term":154,"__hash__":792},"glossary\u002Fglossary\u002Fsteam-sootblower.md",[554,555,556],"sootblower","steam soot blower","steam blower",{"type":53,"value":558,"toc":769},[559,565,569,629,633,725,729,736,738],[56,560,58,561,564],{},[60,562,563],{},"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.",[76,566,568],{"id":567},"types","Types",[446,570,571,580],{},[449,572,573],{},[452,574,575,578],{},[455,576,577],{},"Type",[455,579,460],{},[462,581,582,593,604,611,621],{},[452,583,584,590],{},[467,585,586],{},[65,587,589],{"href":588},"\u002Fglossary\u002Fik-long-retract-sootblower","IK (long retract)",[467,591,592],{},"Convective superheater, reheater, generating bank",[452,594,595,601],{},[467,596,597],{},[65,598,600],{"href":599},"\u002Fglossary\u002Fir-rotary-sootblower","IR (rotary)",[467,602,603],{},"Air heater, deep convective banks",[452,605,606,608],{},[467,607,322],{},[467,609,610],{},"Furnace waterwalls, short reach",[452,612,613,618],{},[467,614,615],{},[65,616,617],{"href":481},"Retractable",[467,619,620],{},"High-temperature service, withdrawn between uses",[452,622,623,626],{},[467,624,625],{},"Fixed",[467,627,628],{},"Air heaters, smaller industrial duty",[76,630,632],{"id":631},"trade-offs-vs-sonic-horns","Trade-offs vs sonic horns",[446,634,635,649],{},[449,636,637],{},[452,638,639,642,644],{},[455,640,641],{},"Attribute",[455,643,154],{},[455,645,646],{},[65,647,648],{"href":124},"Sonic horn",[462,650,651,662,673,684,695,706,716],{},[452,652,653,656,659],{},[467,654,655],{},"Cleaning medium",[467,657,658],{},"High-pressure steam jet",[467,660,661],{},"Pulsed sound",[452,663,664,667,670],{},[467,665,666],{},"Tube erosion risk",[467,668,669],{},"Documented",[467,671,672],{},"None",[452,674,675,678,681],{},[467,676,677],{},"Steam \u002F energy consumption",[467,679,680],{},"Significant boiler steam",[467,682,683],{},"Plant compressed air only",[452,685,686,689,692],{},[467,687,688],{},"Frequency",[467,690,691],{},"Per shift typical",[467,693,694],{},"Every few minutes",[452,696,697,700,703],{},[467,698,699],{},"Effective on bonded slag",[467,701,702],{},"Yes",[467,704,705],{},"No",[452,707,708,711,713],{},[467,709,710],{},"Effective on dry friable deposits",[467,712,702],{},[467,714,715],{},"Yes (and earlier in the consolidation cycle)",[452,717,718,721,723],{},[467,719,720],{},"Moving parts in flue gas",[467,722,702],{},[467,724,672],{},[76,726,728],{"id":727},"position-in-modern-cleaning-practice","Position in modern cleaning practice",[56,730,731,732,735],{},"Modern practice typically combines both: steam sootblowers for periodic deeper cleaning, ",[65,733,734],{"href":124},"sonic horns"," for continuous prevention between sootblower cycles. The combination outperforms either alone on most convective-pass duty.",[76,737,130],{"id":129},[93,739,740,746,751,756,761,765],{},[96,741,742],{},[65,743,745],{"href":744},"\u002Fglossary\u002Fsonic-sootblower","Sonic sootblower",[96,747,748],{},[65,749,750],{"href":588},"IK long retract sootblower",[96,752,753],{},[65,754,755],{"href":599},"IR rotary sootblower",[96,757,758],{},[65,759,760],{"href":481},"Retract sootblower",[96,762,763],{},[65,764,47],{"href":167},[96,766,767],{},[65,768,648],{"href":124},{"title":156,"searchDepth":157,"depth":157,"links":770},[771,772,773,774],{"id":567,"depth":157,"text":568},{"id":631,"depth":157,"text":632},{"id":727,"depth":157,"text":728},{"id":129,"depth":157,"text":130},"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.",{},[778,779,780,781,251,782],"sonic-sootblower","ik-long-retract-sootblower","ir-rotary-sootblower","retract-sootblower","sonic-horn",{"title":784,"description":785},"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.",[787,788],{"title":258,"url":259},{"title":789,"url":790},"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\u002Fsteam-sootblower","XD3SJC43DwsBLNSvsJdGRtCtrjPlwojM--cj2MByKQo",1782613719184]