[{"data":1,"prerenderedAt":1206},["ShallowReactive",2],{"site-footer-common":3,"glossary:tube-erosion-tube-wastage":45,"glossary-related:tube-erosion-tube-wastage":196},{"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":175,"description":176,"extension":177,"meta":178,"navigation":179,"path":180,"relatedTerms":181,"seo":186,"sources":189,"stem":193,"term":194,"__hash__":195},"glossary\u002Fglossary\u002Ftube-erosion-tube-wastage.md","Tube erosion \u002F tube wastage",[49,50,51],"tube erosion","tube wastage","fly-ash erosion",{"type":53,"value":54,"toc":167},"minimark",[55,73,78,104,108,122,126,133,137],[56,57,58,62,63,66,67,72],"p",{},[59,60,61],"strong",{},"Tube erosion"," (also ",[64,65,50],"em",{},") is the gradual thinning of boiler tube walls by repeated mechanical impact from particulate or by steam-jet impingement. Continued erosion eventually thins the tube below its design pressure rating, triggering ",[68,69,71],"a",{"href":70},"\u002Fglossary\u002Fboiler-tube-failure","boiler tube failure (BTF)",".",[74,75,77],"h2",{"id":76},"two-main-mechanisms","Two main mechanisms",[79,80,81,93],"ul",{},[82,83,84,87,88,92],"li",{},[59,85,86],{},"Fly-ash erosion"," — abrasive ash particles continuously impact tube surfaces, particularly in high-velocity sections of the ",[68,89,91],{"href":90},"\u002Fglossary\u002Fconvective-pass-backpass","convective pass"," and economiser. Worst on units burning high-ash coals",[82,94,95,98,99,103],{},[59,96,97],{},"Sootblower erosion"," — steam jets from poorly-aligned ",[68,100,102],{"href":101},"\u002Fglossary\u002Fik-long-retract-sootblower","IK or IR sootblowers"," directly impinge on adjacent tubes, thinning them at the impingement zone",[74,105,107],{"id":106},"mitigation","Mitigation",[79,109,110,113,116,119],{},[82,111,112],{},"Flow-shielding (chord plates, dummy tubes)",[82,114,115],{},"Ash-load reduction (selective fuel blending, pre-cyclone removal)",[82,117,118],{},"Sootblower lance alignment audits and re-aiming",[82,120,121],{},"Coatings (HVOF, thermal-spray) on the most exposed tubes",[74,123,125],{"id":124},"sonic-horns-and-erosion","Sonic horns and erosion",[56,127,128,132],{},[68,129,131],{"href":130},"\u002Fglossary\u002Fsonic-horn","Sonic horns"," contribute zero mechanical erosion because they apply no contact force and no high-velocity jet. Plants that have suffered repeated sootblower-erosion BTF often retrofit horns and reduce sootblower duty, slowing the erosion progression.",[74,134,136],{"id":135},"related-terms","Related terms",[79,138,139,145,150,156,162],{},[82,140,141],{},[68,142,144],{"href":143},"\u002Fglossary\u002Fboiler","Boiler",[82,146,147],{},[68,148,149],{"href":70},"Boiler tube failure",[82,151,152],{},[68,153,155],{"href":154},"\u002Fglossary\u002Feconomiser","Economiser",[82,157,158],{},[68,159,161],{"href":160},"\u002Fglossary\u002Fsteam-sootblower","Steam sootblower",[82,163,164],{},[68,165,166],{"href":130},"Sonic horn",{"title":168,"searchDepth":169,"depth":169,"links":170},"",2,[171,172,173,174],{"id":76,"depth":169,"text":77},{"id":106,"depth":169,"text":107},{"id":124,"depth":169,"text":125},{"id":135,"depth":169,"text":136},"boiler","Tube erosion (also tube wastage) is the gradual thinning of boiler tube walls by repeated mechanical impact from particulate or by steam-jet impingement. Continued erosion eventually thins the tube below its design pressure rating, triggering boiler tube failure (BTF).","md",{},true,"\u002Fglossary\u002Ftube-erosion-tube-wastage",[175,182,183,184,185],"boiler-tube-failure","economiser","steam-sootblower","sonic-horn",{"title":187,"description":188},"Tube erosion and tube wastage — thinning of boiler tubes by particulate impact","Tube erosion is the gradual thinning of boiler tubes by fly-ash impact and sootblower steam jets. Both are documented mechanisms of boiler tube failure.",[190],{"title":191,"url":192},"POWER Magazine — Update: Benchmarking Boiler Tube Failures","https:\u002F\u002Fwww.powermag.com\u002Fupdate-benchmarking-boiler-tube-failures\u002F","glossary\u002Ftube-erosion-tube-wastage","Tube erosion and tube wastage","SwfphESr4oNYEc_j53NH4Y5ui6UvKyUR7JSEfQfKAZQ",[197,443,612,734,979],{"id":198,"title":144,"aliases":199,"body":203,"category":175,"description":421,"extension":177,"meta":422,"navigation":179,"path":143,"relatedTerms":423,"seo":431,"sources":434,"stem":441,"term":144,"__hash__":442},"glossary\u002Fglossary\u002Fboiler.md",[200,201,202],"industrial boiler","utility boiler","steam generator",{"type":53,"value":204,"toc":416},[205,231,235,353,357,386,388],[56,206,207,208,210,211,215,216,219,220,224,225,219,228,72],{},"A ",[59,209,175],{}," is a closed vessel in which fuel chemical energy is converted to steam by transferring heat into water flowing through tube banks. Industrial and utility boilers serve electricity generation, district heating, process steam, ",[68,212,214],{"href":213},"\u002Fglossary\u002Fwaste-to-energy","WtE",", ",[68,217,218],{"href":213},"biomass"," and ",[68,221,223],{"href":222},"\u002Fglossary\u002Frecovery-boiler","pulp-and-paper"," operations. All of them foul; the only variables are ",[64,226,227],{},"how much",[64,229,230],{},"with what",[74,232,234],{"id":233},"boiler-families","Boiler families",[236,237,238,254],"table",{},[239,240,241],"thead",{},[242,243,244,248,251],"tr",{},[245,246,247],"th",{},"Type",[245,249,250],{},"Fuel",[245,252,253],{},"Notes",[255,256,257,272,286,300,313,327,338],"tbody",{},[242,258,259,266,269],{},[260,261,262],"td",{},[68,263,265],{"href":264},"\u002Fglossary\u002Fpc-boiler","PC boiler",[260,267,268],{},"Pulverised coal",[260,270,271],{},"Dominant utility design",[242,273,274,280,283],{},[260,275,276],{},[68,277,279],{"href":278},"\u002Fglossary\u002Fcfb-boiler","CFB boiler",[260,281,282],{},"Coal, biomass, RDF, lignite",[260,284,285],{},"Tolerates wider fuel range; lower NOx",[242,287,288,294,297],{},[260,289,290],{},[68,291,293],{"href":292},"\u002Fglossary\u002Fbfb-boiler","BFB boiler",[260,295,296],{},"Biomass, sludge, low-grade fuels",[260,298,299],{},"Bubbling fluidised bed",[242,301,302,307,310],{},[260,303,304],{},[68,305,306],{"href":222},"Recovery boiler",[260,308,309],{},"Black liquor (kraft pulp mills)",[260,311,312],{},"Combines chemicals recovery with steam",[242,314,315,321,324],{},[260,316,317],{},[68,318,320],{"href":319},"\u002Fglossary\u002Fhog-fuel-boiler-bark-boiler","Hog-fuel boiler",[260,322,323],{},"Wood waste, bark",[260,325,326],{},"Common at pulp mills as side boilers",[242,328,329,332,335],{},[260,330,331],{},"Gas \u002F oil boiler",[260,333,334],{},"Natural gas, fuel oil",[260,336,337],{},"Lower particulate, less fouling",[242,339,340,343,346],{},[260,341,342],{},"HRSG",[260,344,345],{},"Gas-turbine exhaust",[260,347,348,349],{},"See ",[68,350,352],{"href":351},"\u002Fglossary\u002Fheat-recovery-steam-generator","heat-recovery steam generator",[74,354,356],{"id":355},"where-sonic-horns-sit","Where sonic horns sit",[56,358,359,361,362,215,364,215,368,219,372,376,377,380,381,385],{},[68,360,131],{"href":130}," installed across the convective pass — between ",[68,363,183],{"href":154},[68,365,367],{"href":366},"\u002Fglossary\u002Fsuperheater","superheaters",[68,369,371],{"href":370},"\u002Fglossary\u002Freheater","reheater",[68,373,375],{"href":374},"\u002Fglossary\u002Fair-heater","air heater"," — dislodge ash and soot continuously, supplementing or partially replacing steam ",[68,378,379],{"href":160},"sootblowers",". The benefit shows up as ",[68,382,384],{"href":383},"\u002Fglossary\u002Fheat-rate","heat rate"," recovery, deferred outages and longer intervals between water washes.",[74,387,136],{"id":135},[79,389,390,394,398,402,408,412],{},[82,391,392],{},[68,393,265],{"href":264},[82,395,396],{},[68,397,279],{"href":278},[82,399,400],{},[68,401,306],{"href":222},[82,403,404],{},[68,405,407],{"href":406},"\u002Fglossary\u002Fwaterwall","Waterwall",[82,409,410],{},[68,411,155],{"href":154},[82,413,414],{},[68,415,166],{"href":130},{"title":168,"searchDepth":169,"depth":169,"links":417},[418,419,420],{"id":233,"depth":169,"text":234},{"id":355,"depth":169,"text":356},{"id":135,"depth":169,"text":136},"A boiler is a closed vessel in which fuel chemical energy is converted to steam by transferring heat into water flowing through tube banks. Industrial and utility boilers serve electricity generation, district heating, process steam, WtE, biomass and pulp-and-paper operations. All of them foul; the only variables are how much and with what.",{},[424,425,426,427,428,183,429,430,185],"pc-boiler","cfb-boiler","bfb-boiler","recovery-boiler","waterwall","superheater","air-heater",{"title":432,"description":433},"Boiler — industrial steam generator types and acoustic-cleaning needs","A boiler is a vessel that converts fuel chemical energy into steam by heating water. Coal-fired, biomass, oil, gas and recovery boilers all foul; sonic horns clean heat-transfer surfaces.",[435,438],{"title":436,"url":437},"Wikipedia — Boiler","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBoiler",{"title":439,"url":440},"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\u002Fboiler","pamAnZGo_UeIedDHhYrfv0nP3GCXkNTGi0a197n4b5Q",{"id":444,"title":149,"aliases":445,"body":449,"category":175,"description":600,"extension":177,"meta":601,"navigation":179,"path":70,"relatedTerms":602,"seo":605,"sources":608,"stem":610,"term":149,"__hash__":611},"glossary\u002Fglossary\u002Fboiler-tube-failure.md",[446,447,448],"BTF","boiler tube failures","tube leak",{"type":53,"value":450,"toc":595},[451,457,461,546,550,553,574,576],[56,452,453,456],{},[59,454,455],{},"Boiler tube failure (BTF)"," is the leading cause of forced outages on industrial and utility boilers worldwide. A single tube leak in a high-pressure section requires immediate shutdown for safety and repair, with outage costs running into millions of dollars on a large utility unit.",[74,458,460],{"id":459},"common-btf-mechanisms","Common BTF mechanisms",[236,462,463,473],{},[239,464,465],{},[242,466,467,470],{},[245,468,469],{},"Mechanism",[245,471,472],{},"Typical location",[255,474,475,487,497,509,516,530,538],{},[242,476,477,480],{},[260,478,479],{},"Long-term overheating \u002F creep",[260,481,482,483,215,485],{},"Finishing ",[68,484,429],{"href":366},[68,486,371],{"href":370},[242,488,489,492],{},[260,490,491],{},"Short-term overheating",[260,493,494,496],{},[68,495,407],{"href":406}," at burner clusters",[242,498,499,501],{},[260,500,86],{},[260,502,503,215,505,508],{},[68,504,155],{"href":154},[68,506,507],{"href":90},"convective-pass"," tubes",[242,510,511,513],{},[260,512,97],{},[260,514,515],{},"Tube banks near sootblower lances",[242,517,518,524],{},[260,519,520],{},[68,521,523],{"href":522},"\u002Fglossary\u002Fcold-end-corrosion-dew-point-corrosion","Cold-end corrosion",[260,525,526,529],{},[68,527,528],{"href":374},"Air heater",", economiser cold end",[242,531,532,535],{},[260,533,534],{},"Hydrogen damage",[260,536,537],{},"High-heat-flux waterwalls",[242,539,540,543],{},[260,541,542],{},"Stress-corrosion cracking",[260,544,545],{},"Cycling units, austenitic superheaters",[74,547,549],{"id":548},"cleaning-practices-and-btf","Cleaning practices and BTF",[56,551,552],{},"Cleaning choices contribute directly to several BTF mechanisms:",[79,554,555,561,567],{},[82,556,557,560],{},[59,558,559],{},"Steam sootblower erosion"," is a documented cause of premature tube failure where lance alignment is poor or sootblowers fire too often",[82,562,563,566],{},[59,564,565],{},"Water-cannon thermal shock"," can crack tubes at the impingement zone",[82,568,569,573],{},[59,570,571],{},[68,572,131],{"href":130}," carry no documented BTF mechanism because they apply no contact force; this is a routinely-cited reason for their adoption as a complement to (or partial replacement of) steam sootblowing on fouling-prone surfaces",[74,575,136],{"id":135},[79,577,578,582,586,591],{},[82,579,580],{},[68,581,144],{"href":143},[82,583,584],{},[68,585,47],{"href":180},[82,587,588],{},[68,589,590],{"href":522},"Cold-end corrosion \u002F dew-point corrosion",[82,592,593],{},[68,594,166],{"href":130},{"title":168,"searchDepth":169,"depth":169,"links":596},[597,598,599],{"id":459,"depth":169,"text":460},{"id":548,"depth":169,"text":549},{"id":135,"depth":169,"text":136},"Boiler tube failure (BTF) is the leading cause of forced outages on industrial and utility boilers worldwide. A single tube leak in a high-pressure section requires immediate shutdown for safety and repair, with outage costs running into millions of dollars on a large utility unit.",{},[175,603,604,185],"tube-erosion-tube-wastage","cold-end-corrosion-dew-point-corrosion",{"title":606,"description":607},"Boiler tube failure (BTF) — the leading cause of forced outages","Boiler tube failures are the leading cause of forced outages on industrial boilers. Causes range from creep and erosion to corrosion and overheating; cleaning practices contribute to several.",[609],{"title":191,"url":192},"glossary\u002Fboiler-tube-failure","jq0c2DsvoMFC7DUtwu56JbaA7p6hOAIN2NlQIGiTahk",{"id":613,"title":155,"aliases":614,"body":617,"category":175,"description":720,"extension":177,"meta":721,"navigation":179,"path":154,"relatedTerms":722,"seo":725,"sources":728,"stem":732,"term":155,"__hash__":733},"glossary\u002Fglossary\u002Feconomiser.md",[615,616],"economizer","feedwater economiser",{"type":53,"value":618,"toc":714},[619,636,640,643,660,663,667,672,676,684,686],[56,620,621,622,624,625,627,628,630,631,633,634,72],{},"An ",[59,623,183],{}," is the tube bank in a boiler's ",[68,626,91],{"href":90}," that recovers residual heat from the flue gas by preheating boiler feedwater. It sits downstream of the ",[68,629,371],{"href":370}," and upstream of the ",[68,632,375],{"href":374},"; economiser performance directly affects boiler ",[68,635,384],{"href":383},[74,637,639],{"id":638},"fouling","Fouling",[56,641,642],{},"Two failure modes dominate:",[79,644,645,651],{},[82,646,647,650],{},[59,648,649],{},"Ash bridging"," between tubes — gas can no longer pass freely; ΔP across the economiser rises",[82,652,653,659],{},[59,654,655],{},[68,656,658],{"href":657},"\u002Fglossary\u002Flarge-particle-ash","Large-particle ash"," dropping out of the gas stream onto economiser hoppers — bridges and pluggage in the hopper itself",[56,661,662],{},"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.",[74,664,666],{"id":665},"sonic-horn-duty","Sonic-horn duty",[56,668,669,671],{},[68,670,131],{"href":130}," 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.",[74,673,675],{"id":674},"economiser-scr-adjacency","Economiser-SCR adjacency",[56,677,678,679,683],{},"On units with an upstream ",[68,680,682],{"href":681},"\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.",[74,685,136],{"id":135},[79,687,688,692,697,702,706,710],{},[82,689,690],{},[68,691,144],{"href":143},[82,693,694],{},[68,695,696],{"href":90},"Convective pass \u002F backpass",[82,698,699],{},[68,700,701],{"href":366},"Superheater",[82,703,704],{},[68,705,528],{"href":374},[82,707,708],{},[68,709,658],{"href":657},[82,711,712],{},[68,713,166],{"href":130},{"title":168,"searchDepth":169,"depth":169,"links":715},[716,717,718,719],{"id":638,"depth":169,"text":639},{"id":665,"depth":169,"text":666},{"id":674,"depth":169,"text":675},{"id":135,"depth":169,"text":136},"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.",{},[175,723,429,430,724,185],"convective-pass-backpass","large-particle-ash",{"title":726,"description":727},"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.",[729],{"title":730,"url":731},"Wikipedia — Economizer","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEconomizer","glossary\u002Feconomiser","kh4Q3Eo9CNl35_b843VUXSI8fDZuiLZqLyB__NSzVH4",{"id":735,"title":161,"aliases":736,"body":740,"category":960,"description":961,"extension":177,"meta":962,"navigation":179,"path":160,"relatedTerms":963,"seo":969,"sources":972,"stem":977,"term":161,"__hash__":978},"glossary\u002Fglossary\u002Fsteam-sootblower.md",[737,738,739],"sootblower","steam soot blower","steam blower",{"type":53,"value":741,"toc":954},[742,748,752,813,817,908,912,919,921],[56,743,207,744,747],{},[59,745,746],{},"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.",[74,749,751],{"id":750},"types","Types",[236,753,754,763],{},[239,755,756],{},[242,757,758,760],{},[245,759,247],{},[245,761,762],{},"Use case",[255,764,765,775,786,794,805],{},[242,766,767,772],{},[260,768,769],{},[68,770,771],{"href":101},"IK (long retract)",[260,773,774],{},"Convective superheater, reheater, generating bank",[242,776,777,783],{},[260,778,779],{},[68,780,782],{"href":781},"\u002Fglossary\u002Fir-rotary-sootblower","IR (rotary)",[260,784,785],{},"Air heater, deep convective banks",[242,787,788,791],{},[260,789,790],{},"Wall blowers",[260,792,793],{},"Furnace waterwalls, short reach",[242,795,796,802],{},[260,797,798],{},[68,799,801],{"href":800},"\u002Fglossary\u002Fretract-sootblower","Retractable",[260,803,804],{},"High-temperature service, withdrawn between uses",[242,806,807,810],{},[260,808,809],{},"Fixed",[260,811,812],{},"Air heaters, smaller industrial duty",[74,814,816],{"id":815},"trade-offs-vs-sonic-horns","Trade-offs vs sonic horns",[236,818,819,832],{},[239,820,821],{},[242,822,823,826,828],{},[245,824,825],{},"Attribute",[245,827,161],{},[245,829,830],{},[68,831,166],{"href":130},[255,833,834,845,856,867,878,889,899],{},[242,835,836,839,842],{},[260,837,838],{},"Cleaning medium",[260,840,841],{},"High-pressure steam jet",[260,843,844],{},"Pulsed sound",[242,846,847,850,853],{},[260,848,849],{},"Tube erosion risk",[260,851,852],{},"Documented",[260,854,855],{},"None",[242,857,858,861,864],{},[260,859,860],{},"Steam \u002F energy consumption",[260,862,863],{},"Significant boiler steam",[260,865,866],{},"Plant compressed air only",[242,868,869,872,875],{},[260,870,871],{},"Frequency",[260,873,874],{},"Per shift typical",[260,876,877],{},"Every few minutes",[242,879,880,883,886],{},[260,881,882],{},"Effective on bonded slag",[260,884,885],{},"Yes",[260,887,888],{},"No",[242,890,891,894,896],{},[260,892,893],{},"Effective on dry friable deposits",[260,895,885],{},[260,897,898],{},"Yes (and earlier in the consolidation cycle)",[242,900,901,904,906],{},[260,902,903],{},"Moving parts in flue gas",[260,905,885],{},[260,907,855],{},[74,909,911],{"id":910},"position-in-modern-cleaning-practice","Position in modern cleaning practice",[56,913,914,915,918],{},"Modern practice typically combines both: steam sootblowers for periodic deeper cleaning, ",[68,916,917],{"href":130},"sonic horns"," for continuous prevention between sootblower cycles. The combination outperforms either alone on most convective-pass duty.",[74,920,136],{"id":135},[79,922,923,929,934,939,944,950],{},[82,924,925],{},[68,926,928],{"href":927},"\u002Fglossary\u002Fsonic-sootblower","Sonic sootblower",[82,930,931],{},[68,932,933],{"href":101},"IK long retract sootblower",[82,935,936],{},[68,937,938],{"href":781},"IR rotary sootblower",[82,940,941],{},[68,942,943],{"href":800},"Retract sootblower",[82,945,946],{},[68,947,949],{"href":948},"\u002Fglossary\u002Fwater-cannon","Water cannon",[82,951,952],{},[68,953,166],{"href":130},{"title":168,"searchDepth":169,"depth":169,"links":955},[956,957,958,959],{"id":750,"depth":169,"text":751},{"id":815,"depth":169,"text":816},{"id":910,"depth":169,"text":911},{"id":135,"depth":169,"text":136},"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.",{},[964,965,966,967,968,185],"sonic-sootblower","ik-long-retract-sootblower","ir-rotary-sootblower","retract-sootblower","water-cannon",{"title":970,"description":971},"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.",[973,976],{"title":974,"url":975},"Wikipedia — Soot blower","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSoot_blower",{"title":439,"url":440},"glossary\u002Fsteam-sootblower","XD3SJC43DwsBLNSvsJdGRtCtrjPlwojM--cj2MByKQo",{"id":980,"title":166,"aliases":981,"body":984,"category":1182,"description":1183,"extension":177,"meta":1184,"navigation":179,"path":130,"relatedTerms":1185,"seo":1191,"sources":1194,"stem":1204,"term":166,"__hash__":1205},"glossary\u002Fglossary\u002Fsonic-horn.md",[917,982,983],"sonic cleaning horn","industrial sonic horn",{"type":53,"value":985,"toc":1175},[986,1016,1020,1028,1032,1094,1098,1134,1138,1145,1147],[56,987,207,988,991,992,996,997,215,1001,215,1005,215,1009,219,1012,72],{},[59,989,990],{},"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 ",[68,993,995],{"href":994},"\u002Fglossary\u002Facoustic-cleaner","acoustic cleaner"," and the default specification for cleaning ",[68,998,1000],{"href":999},"\u002Fglossary\u002Felectrostatic-precipitator","ESPs",[68,1002,1004],{"href":1003},"\u002Fglossary\u002Ffabric-filter","baghouses",[68,1006,1008],{"href":1007},"\u002Fglossary\u002Fselective-catalytic-reduction","SCR catalysts",[68,1010,1011],{"href":366},"boiler heat-transfer surfaces",[68,1013,1015],{"href":1014},"\u002Fglossary\u002Fhopper","hoppers and silos",[74,1017,1019],{"id":1018},"how-a-sonic-horn-works","How a sonic horn works",[56,1021,1022,1023,1027],{},"Compressed plant air admitted through a ",[68,1024,1026],{"href":1025},"\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.",[74,1029,1031],{"id":1030},"key-parameters","Key parameters",[236,1033,1034,1044],{},[239,1035,1036],{},[242,1037,1038,1041],{},[245,1039,1040],{},"Parameter",[245,1042,1043],{},"Typical range",[255,1045,1046,1054,1062,1070,1078,1086],{},[242,1047,1048,1051],{},[260,1049,1050],{},"Fundamental frequency",[260,1052,1053],{},"60–400 Hz",[242,1055,1056,1059],{},[260,1057,1058],{},"Sound pressure level",[260,1060,1061],{},"140–180 dB",[242,1063,1064,1067],{},[260,1065,1066],{},"Compressed-air consumption",[260,1068,1069],{},"8–14 Nm³\u002Fmin at 4–7 bar",[242,1071,1072,1075],{},[260,1073,1074],{},"Operating temperature (with appropriate materials)",[260,1076,1077],{},"−40 °C to +500 °C",[242,1079,1080,1083],{},[260,1081,1082],{},"Firing cycle",[260,1084,1085],{},"5–15 s burst, repeated every 3–15 minutes",[242,1087,1088,1091],{},[260,1089,1090],{},"Mass",[260,1092,1093],{},"15–60 kg depending on horn size",[74,1095,1097],{"id":1096},"frequency-selection","Frequency selection",[56,1099,1100,1101,215,1105,1108,1109,215,1113,1117,1118,215,1121,1125,1126,219,1130,72],{},"Lower frequencies (60–125 Hz) project longer wavelengths and penetrate further into large open vessels — ",[68,1102,1104],{"href":1103},"\u002Fglossary\u002Fpreheater-cyclone","preheater cyclones",[68,1106,1107],{"href":222},"recovery-boiler superheaters",", large ",[68,1110,1112],{"href":1111},"\u002Fglossary\u002Fesp-field-bus-section","ESP fields",[68,1114,1116],{"href":1115},"\u002Fglossary\u002Fsilo","silos",". Higher frequencies (230–400 Hz) carry more energy per unit volume and suit finer dust loads in ",[68,1119,1120],{"href":1003},"fabric-filter compartments",[68,1122,1124],{"href":1123},"\u002Fglossary\u002Fhoneycomb-catalyst","catalyst layers"," and smaller hopper geometries. See ",[68,1127,1129],{"href":1128},"\u002Fglossary\u002Flow-frequency-acoustic-cleaner","low-frequency acoustic cleaner",[68,1131,1133],{"href":1132},"\u002Fglossary\u002Fhigh-frequency-acoustic-cleaner","high-frequency acoustic cleaner",[74,1135,1137],{"id":1136},"sonic-horn-vs-steam-sootblower","Sonic horn vs steam sootblower",[56,1139,1140,1141,1144],{},"Sonic horns are increasingly specified alongside or in place of ",[68,1142,1143],{"href":160},"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.",[74,1146,136],{"id":135},[79,1148,1149,1154,1158,1164,1170],{},[82,1150,1151],{},[68,1152,1153],{"href":994},"Acoustic cleaner",[82,1155,1156],{},[68,1157,928],{"href":927},[82,1159,1160],{},[68,1161,1163],{"href":1162},"\u002Fglossary\u002Fbell-horn","Bell horn",[82,1165,1166],{},[68,1167,1169],{"href":1168},"\u002Fglossary\u002Fdiaphragm-horn","Diaphragm horn",[82,1171,1172],{},[68,1173,1174],{"href":1128},"Low-frequency acoustic cleaner",{"title":168,"searchDepth":169,"depth":169,"links":1176},[1177,1178,1179,1180,1181],{"id":1018,"depth":169,"text":1019},{"id":1030,"depth":169,"text":1031},{"id":1096,"depth":169,"text":1097},{"id":1136,"depth":169,"text":1137},{"id":135,"depth":169,"text":136},"core-technology","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.",{},[1186,1187,964,1188,1189,1190],"acoustic-cleaner","acoustic-cleaning-system","bell-horn","diaphragm-horn","low-frequency-acoustic-cleaner",{"title":1192,"description":1193},"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.",[1195,1198,1201],{"title":1196,"url":1197},"Power Engineering — Sonic Horns: A User's Introduction","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Fsonic-horns-a-userrsquos-introduction\u002F",{"title":1199,"url":1200},"Power Engineering — Tuning in to Acoustic Cleaning","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Ftuning-in-to-acoustic-cleaning\u002F",{"title":1202,"url":1203},"Wikipedia — Sonic soot blowers","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSonic_soot_blowers","glossary\u002Fsonic-horn","YzrhN0kKzqSaQo0wfn0rueNZ-V43mcg5zahqeWi3lnU",1782613727029]