[{"data":1,"prerenderedAt":818},["ShallowReactive",2],{"site-footer-common":3,"glossary:ik-long-retract-sootblower":45,"glossary-related:ik-long-retract-sootblower":187},{"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":168,"description":169,"extension":170,"meta":171,"navigation":172,"path":173,"relatedTerms":174,"seo":178,"sources":181,"stem":185,"term":47,"__hash__":186},"glossary\u002Fglossary\u002Fik-long-retract-sootblower.md","IK long retract sootblower",[49,50,51],"IK sootblower","long retract sootblower","IK lance",{"type":53,"value":54,"toc":161},"minimark",[55,74,79,95,99,125,132,136],[56,57,58,59,62,63,68,69,73],"p",{},"An ",[60,61,47],"strong",{}," 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 ",[64,65,67],"a",{"href":66},"\u002Fglossary\u002Fsuperheater","superheater"," and ",[64,70,72],{"href":71},"\u002Fglossary\u002Freheater","reheater"," cleaning on industrial and utility boilers.",[75,76,78],"h2",{"id":77},"why-it-dominates-the-convective-pass","Why it dominates the convective pass",[80,81,82,86,89,92],"ul",{},[83,84,85],"li",{},"Steam jets reach deep between tube banks",[83,87,88],{},"Lance rotation cleans 360° of surrounding tubes per insertion",[83,90,91],{},"Lance is fully withdrawn between operations, protecting it from continuous high-temperature exposure",[83,93,94],{},"Mature design with several decades of operating experience",[75,96,98],{"id":97},"trade-offs","Trade-offs",[80,100,101,107,113,119],{},[83,102,103,106],{},[60,104,105],{},"Tube erosion"," — documented at nozzle impingement points and on the directly-opposite tube row",[83,108,109,112],{},[60,110,111],{},"Steam consumption"," — typical IK consumes 5–15 tonnes of medium-pressure steam per cycle",[83,114,115,118],{},[60,116,117],{},"Mechanical complexity"," — drive motor, lance, packing, nozzles, all require maintenance",[83,120,121,124],{},[60,122,123],{},"Lance bowing"," — long lances sag and bow under thermal cycling",[56,126,127,131],{},[64,128,130],{"href":129},"\u002Fglossary\u002Fsonic-horn","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.",[75,133,135],{"id":134},"related-terms","Related terms",[80,137,138,144,150,156],{},[83,139,140],{},[64,141,143],{"href":142},"\u002Fglossary\u002Fsteam-sootblower","Steam sootblower",[83,145,146],{},[64,147,149],{"href":148},"\u002Fglossary\u002Fir-rotary-sootblower","IR rotary sootblower",[83,151,152],{},[64,153,155],{"href":154},"\u002Fglossary\u002Fretract-sootblower","Retract sootblower",[83,157,158],{},[64,159,160],{"href":66},"Superheater",{"title":162,"searchDepth":163,"depth":163,"links":164},"",2,[165,166,167],{"id":77,"depth":163,"text":78},{"id":97,"depth":163,"text":98},{"id":134,"depth":163,"text":135},"alternative-cleaning","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.","md",{},true,"\u002Fglossary\u002Fik-long-retract-sootblower",[175,176,177,67],"steam-sootblower","ir-rotary-sootblower","retract-sootblower",{"title":179,"description":180},"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.",[182],{"title":183,"url":184},"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\u002Fik-long-retract-sootblower","UWMSBNBfp6ftsYiv_bE3SEQ56Nm0HV9Mcho_ohsWXeQ",[188,435,583,663],{"id":189,"title":143,"aliases":190,"body":194,"category":168,"description":418,"extension":170,"meta":419,"navigation":172,"path":142,"relatedTerms":420,"seo":425,"sources":428,"stem":433,"term":143,"__hash__":434},"glossary\u002Fglossary\u002Fsteam-sootblower.md",[191,192,193],"sootblower","steam soot blower","steam blower",{"type":53,"value":195,"toc":412},[196,203,207,273,277,369,373,380,382],[56,197,198,199,202],{},"A ",[60,200,201],{},"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.",[75,204,206],{"id":205},"types","Types",[208,209,210,223],"table",{},[211,212,213],"thead",{},[214,215,216,220],"tr",{},[217,218,219],"th",{},"Type",[217,221,222],{},"Use case",[224,225,226,237,247,255,265],"tbody",{},[214,227,228,234],{},[229,230,231],"td",{},[64,232,233],{"href":173},"IK (long retract)",[229,235,236],{},"Convective superheater, reheater, generating bank",[214,238,239,244],{},[229,240,241],{},[64,242,243],{"href":148},"IR (rotary)",[229,245,246],{},"Air heater, deep convective banks",[214,248,249,252],{},[229,250,251],{},"Wall blowers",[229,253,254],{},"Furnace waterwalls, short reach",[214,256,257,262],{},[229,258,259],{},[64,260,261],{"href":154},"Retractable",[229,263,264],{},"High-temperature service, withdrawn between uses",[214,266,267,270],{},[229,268,269],{},"Fixed",[229,271,272],{},"Air heaters, smaller industrial duty",[75,274,276],{"id":275},"trade-offs-vs-sonic-horns","Trade-offs vs sonic horns",[208,278,279,293],{},[211,280,281],{},[214,282,283,286,288],{},[217,284,285],{},"Attribute",[217,287,143],{},[217,289,290],{},[64,291,292],{"href":129},"Sonic horn",[224,294,295,306,317,328,339,350,360],{},[214,296,297,300,303],{},[229,298,299],{},"Cleaning medium",[229,301,302],{},"High-pressure steam jet",[229,304,305],{},"Pulsed sound",[214,307,308,311,314],{},[229,309,310],{},"Tube erosion risk",[229,312,313],{},"Documented",[229,315,316],{},"None",[214,318,319,322,325],{},[229,320,321],{},"Steam \u002F energy consumption",[229,323,324],{},"Significant boiler steam",[229,326,327],{},"Plant compressed air only",[214,329,330,333,336],{},[229,331,332],{},"Frequency",[229,334,335],{},"Per shift typical",[229,337,338],{},"Every few minutes",[214,340,341,344,347],{},[229,342,343],{},"Effective on bonded slag",[229,345,346],{},"Yes",[229,348,349],{},"No",[214,351,352,355,357],{},[229,353,354],{},"Effective on dry friable deposits",[229,356,346],{},[229,358,359],{},"Yes (and earlier in the consolidation cycle)",[214,361,362,365,367],{},[229,363,364],{},"Moving parts in flue gas",[229,366,346],{},[229,368,316],{},[75,370,372],{"id":371},"position-in-modern-cleaning-practice","Position in modern cleaning practice",[56,374,375,376,379],{},"Modern practice typically combines both: steam sootblowers for periodic deeper cleaning, ",[64,377,378],{"href":129},"sonic horns"," for continuous prevention between sootblower cycles. The combination outperforms either alone on most convective-pass duty.",[75,381,135],{"id":134},[80,383,384,390,394,398,402,408],{},[83,385,386],{},[64,387,389],{"href":388},"\u002Fglossary\u002Fsonic-sootblower","Sonic sootblower",[83,391,392],{},[64,393,47],{"href":173},[83,395,396],{},[64,397,149],{"href":148},[83,399,400],{},[64,401,155],{"href":154},[83,403,404],{},[64,405,407],{"href":406},"\u002Fglossary\u002Fwater-cannon","Water cannon",[83,409,410],{},[64,411,292],{"href":129},{"title":162,"searchDepth":163,"depth":163,"links":413},[414,415,416,417],{"id":205,"depth":163,"text":206},{"id":275,"depth":163,"text":276},{"id":371,"depth":163,"text":372},{"id":134,"depth":163,"text":135},"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.",{},[421,422,176,177,423,424],"sonic-sootblower","ik-long-retract-sootblower","water-cannon","sonic-horn",{"title":426,"description":427},"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.",[429,432],{"title":430,"url":431},"Wikipedia — Soot blower","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSoot_blower",{"title":183,"url":184},"glossary\u002Fsteam-sootblower","XD3SJC43DwsBLNSvsJdGRtCtrjPlwojM--cj2MByKQo",{"id":436,"title":149,"aliases":437,"body":440,"category":168,"description":572,"extension":170,"meta":573,"navigation":172,"path":148,"relatedTerms":574,"seo":576,"sources":579,"stem":581,"term":149,"__hash__":582},"glossary\u002Fglossary\u002Fir-rotary-sootblower.md",[438,439],"IR sootblower","rotary sootblower",{"type":53,"value":441,"toc":567},[442,451,455,474,478,548,551,553],[56,443,58,444,446,447,450],{},[60,445,149],{}," is a short, fixed-position rotating steam lance with permanently-installed nozzles. Unlike the ",[64,448,449],{"href":173},"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.",[75,452,454],{"id":453},"typical-applications","Typical applications",[80,456,457,464,467],{},[83,458,459,463],{},[64,460,462],{"href":461},"\u002Fglossary\u002Fair-heater","Air heater"," cold-end cleaning",[83,465,466],{},"Deep convective superheater banks where insertion is impractical",[83,468,469,473],{},[64,470,472],{"href":471},"\u002Fglossary\u002Frecovery-boiler","Recovery boilers"," — used alongside IK retract designs",[75,475,477],{"id":476},"trade-offs-vs-ik","Trade-offs vs IK",[208,479,480,494],{},[211,481,482],{},[214,483,484,486,489],{},[217,485,285],{},[217,487,488],{},"IR rotary",[217,490,491],{},[64,492,493],{"href":173},"IK long retract",[224,495,496,507,518,527,537],{},[214,497,498,501,504],{},[229,499,500],{},"Lance withdrawal",[229,502,503],{},"Continuous in flue gas",[229,505,506],{},"Withdrawn between cycles",[214,508,509,512,515],{},[229,510,511],{},"Reach",[229,513,514],{},"Short, fixed radius",[229,516,517],{},"Long, traverses across pass",[214,519,520,523,525],{},[229,521,522],{},"Continuous-exposure damage",[229,524,346],{},[229,526,349],{},[214,528,529,531,534],{},[229,530,117],{},[229,532,533],{},"Lower",[229,535,536],{},"Higher",[214,538,539,542,545],{},[229,540,541],{},"Coverage",[229,543,544],{},"Local",[229,546,547],{},"Cross-section of pass",[56,549,550],{},"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.",[75,552,135],{"id":134},[80,554,555,559,563],{},[83,556,557],{},[64,558,143],{"href":142},[83,560,561],{},[64,562,47],{"href":173},[83,564,565],{},[64,566,462],{"href":461},{"title":162,"searchDepth":163,"depth":163,"links":568},[569,570,571],{"id":453,"depth":163,"text":454},{"id":476,"depth":163,"text":477},{"id":134,"depth":163,"text":135},"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.",{},[175,422,575],"air-heater",{"title":577,"description":578},"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.",[580],{"title":183,"url":184},"glossary\u002Fir-rotary-sootblower","IrstHhTcdAMm6Uwt6MUrNzBrscTKxXs-G8HXxpnEGgY",{"id":584,"title":155,"aliases":585,"body":588,"category":168,"description":653,"extension":170,"meta":654,"navigation":172,"path":154,"relatedTerms":655,"seo":656,"sources":659,"stem":661,"term":155,"__hash__":662},"glossary\u002Fglossary\u002Fretract-sootblower.md",[586,587],"retractable sootblower","retract blower",{"type":53,"value":589,"toc":649},[590,596,607,611,625,628,630],[56,591,198,592,595],{},[60,593,594],{},"retract sootblower"," withdraws its lance into a parked position outside the boiler flue gas between cleaning operations. The retracted position protects the lance from continuous high-temperature exposure, allowing the use of relatively economical materials for long-life lances even in service above 1,000 °C.",[56,597,598,599,601,602,606],{},"The two principal retract designs are the ",[64,600,493],{"href":173}," (used for cross-pass convective-bank cleaning) and short wall-blower retracts (used for ",[64,603,605],{"href":604},"\u002Fglossary\u002Fwaterwall","waterwall"," cleaning).",[75,608,610],{"id":609},"why-retract-over-fixed-designs","Why retract over fixed designs",[80,612,613,616,619,622],{},[83,614,615],{},"Lance does not see continuous flue-gas exposure",[83,617,618],{},"Lance materials can be less exotic (and cheaper)",[83,620,621],{},"Inspection and replacement of the lance is straightforward",[83,623,624],{},"Cleaning sequencing can be precisely controlled in time",[56,626,627],{},"The mechanical complexity (drive motor, packing, sealing, position sensing) is the trade-off — retract designs need more maintenance than fixed alternatives.",[75,629,135],{"id":134},[80,631,632,636,640,644],{},[83,633,634],{},[64,635,143],{"href":142},[83,637,638],{},[64,639,47],{"href":173},[83,641,642],{},[64,643,149],{"href":148},[83,645,646],{},[64,647,648],{"href":604},"Waterwall",{"title":162,"searchDepth":163,"depth":163,"links":650},[651,652],{"id":609,"depth":163,"text":610},{"id":134,"depth":163,"text":135},"A retract sootblower withdraws its lance into a parked position outside the boiler flue gas between cleaning operations. The retracted position protects the lance from continuous high-temperature exposure, allowing the use of relatively economical materials for long-life lances even in service above 1,000 °C.",{},[175,422,176,605],{"title":657,"description":658},"Retract sootblower — withdrawable steam lance for high-temperature service","A retract sootblower withdraws its lance into a parked position outside the flue gas between operations, protecting it from continuous high-temperature exposure.",[660],{"title":183,"url":184},"glossary\u002Fretract-sootblower","s6q5kIYRPVlMOv7nzwcFYnLTqunbYwILUkGHVik1TaY",{"id":664,"title":160,"aliases":665,"body":670,"category":803,"description":804,"extension":170,"meta":805,"navigation":172,"path":66,"relatedTerms":806,"seo":809,"sources":812,"stem":816,"term":160,"__hash__":817},"glossary\u002Fglossary\u002Fsuperheater.md",[666,667,668,669],"superheaters","primary superheater","secondary superheater","finishing superheater",{"type":53,"value":671,"toc":798},[672,682,686,726,730,739,763,766,768],[56,673,198,674,676,677,681],{},[60,675,67],{}," is a tube bank in a boiler's ",[64,678,680],{"href":679},"\u002Fglossary\u002Fconvective-pass-backpass","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).",[75,683,685],{"id":684},"fouling","Fouling",[80,687,688,702,708],{},[83,689,690,696,697,701],{},[60,691,692],{},[64,693,695],{"href":694},"\u002Fglossary\u002Fslagging","Slagging"," on the finishing superheater — semi-molten ash from the ",[64,698,700],{"href":699},"\u002Fglossary\u002Ffurnace","furnace"," deposits on the hottest tubes",[83,703,704,707],{},[60,705,706],{},"Bonded ash"," on the primary superheater — drier deposits that sinter under sustained temperature",[83,709,710,713,714,718,719,68,722,725],{},[60,711,712],{},"Sodium \u002F potassium-rich deposits"," on ",[64,715,717],{"href":716},"\u002Fglossary\u002Fwaste-to-energy","biomass",", ",[64,720,721],{"href":716},"WtE",[64,723,724],{"href":471},"recovery boilers"," — sticky, low-melting, aggressive",[75,727,729],{"id":728},"cleaning","Cleaning",[56,731,732,733,68,736,738],{},"Steam ",[64,734,735],{"href":142},"sootblowers",[64,737,378],{"href":129}," work together:",[80,740,741,744,752],{},[83,742,743],{},"Sootblowers attack hard slag on the finishing superheater",[83,745,746,747,751],{},"Sonic horns (",[64,748,750],{"href":749},"\u002Fglossary\u002Flow-frequency-acoustic-cleaner","60–125 Hz",") keep dry ash from consolidating on the primary superheater and convective superheater",[83,753,754,758,759,762],{},[64,755,757],{"href":756},"\u002Fglossary\u002Finfrasonic-cleaner","Infrasonic cleaners"," below 30 Hz are used on deep ",[64,760,761],{"href":471},"recovery-boiler"," superheater cavities",[56,764,765],{},"The combination extends the interval between major water-washes and reduces steam-attemperation requirements that mask deteriorating heat transfer.",[75,767,135],{"id":134},[80,769,770,776,781,786,790,794],{},[83,771,772],{},[64,773,775],{"href":774},"\u002Fglossary\u002Fboiler","Boiler",[83,777,778],{},[64,779,780],{"href":679},"Convective pass \u002F backpass",[83,782,783],{},[64,784,785],{"href":71},"Reheater",[83,787,788],{},[64,789,695],{"href":694},[83,791,792],{},[64,793,292],{"href":129},[83,795,796],{},[64,797,389],{"href":388},{"title":162,"searchDepth":163,"depth":163,"links":799},[800,801,802],{"id":684,"depth":163,"text":685},{"id":728,"depth":163,"text":729},{"id":134,"depth":163,"text":135},"boiler","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).",{},[803,807,72,808,424,421],"convective-pass-backpass","slagging",{"title":810,"description":811},"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.",[813],{"title":814,"url":815},"Wikipedia — Superheater","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSuperheater","glossary\u002Fsuperheater","hYVXyyVmlWCU3AXfAl0l3YAhHpWty_akkDsBJGC_NDs",1782613719103]