[{"data":1,"prerenderedAt":585},["ShallowReactive",2],{"site-footer-common":3,"glossary:scaling":45,"glossary-related:scaling":197},{"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":93,"description":179,"extension":180,"meta":181,"navigation":182,"path":183,"relatedTerms":184,"seo":187,"sources":190,"stem":194,"term":195,"__hash__":196},"glossary\u002Fglossary\u002Fscaling.md","Scaling",[49,50],"scale deposit","mineral scale",{"type":52,"value":53,"toc":173},"minimark",[54,67,72,142,149,153],[55,56,57,60,61,66],"p",{},[58,59,47],"strong",{}," is the deposition of inorganic mineral salts (calcium carbonate, calcium sulphate, silica, magnesium silicate) on heat-transfer surfaces — typically the liquid side of an exchanger or boiler tube. Scaling is the dominant fouling mechanism in cooling-water systems, ",[62,63,65],"a",{"href":64},"\u002Fglossary\u002Fmulti-effect-evaporator","multi-effect evaporators",", water-side boiler tubes and process heat exchangers.",[68,69,71],"h2",{"id":70},"distinguishing-scaling-from-gas-side-fouling","Distinguishing scaling from gas-side fouling",[73,74,75,94],"table",{},[76,77,78],"thead",{},[79,80,81,85,87],"tr",{},[82,83,84],"th",{},"Attribute",[82,86,47],{},[82,88,89,90],{},"Gas-side ",[62,91,93],{"href":92},"\u002Fglossary\u002Ffouling","fouling",[95,96,97,109,120,131],"tbody",{},[79,98,99,103,106],{},[100,101,102],"td",{},"Side of the tube",[100,104,105],{},"Liquid side",[100,107,108],{},"Gas side",[79,110,111,114,117],{},[100,112,113],{},"Mechanism",[100,115,116],{},"Inverse-solubility chemistry",[100,118,119],{},"Particulate adhesion",[79,121,122,125,128],{},[100,123,124],{},"Cleaning",[100,126,127],{},"Chemical, hydroblast",[100,129,130],{},"Mechanical, acoustic, steam",[79,132,133,136,139],{},[100,134,135],{},"Sonic-horn applicability",[100,137,138],{},"None",[100,140,141],{},"Where dry, friable",[55,143,144,148],{},[62,145,147],{"href":146},"\u002Fglossary\u002Fsonic-horn","Sonic horns"," address gas-side fouling, not water-side scaling. Liquid-side scale removal is the province of chemical cleaning campaigns, hydroblasting and other specialised techniques.",[68,150,152],{"id":151},"related-terms","Related terms",[154,155,156,162,167],"ul",{},[157,158,159],"li",{},[62,160,161],{"href":92},"Fouling",[157,163,164],{},[62,165,166],{"href":64},"Multi-effect evaporator",[157,168,169],{},[62,170,172],{"href":171},"\u002Fglossary\u002Fcold-end-corrosion-dew-point-corrosion","Cold-end corrosion \u002F dew-point corrosion",{"title":174,"searchDepth":175,"depth":175,"links":176},"",2,[177,178],{"id":70,"depth":175,"text":71},{"id":151,"depth":175,"text":152},"Scaling is the deposition of inorganic mineral salts (calcium carbonate, calcium sulphate, silica, magnesium silicate) on heat-transfer surfaces — typically the liquid side of an exchanger or boiler tube. Scaling is the dominant fouling mechanism in cooling-water systems, multi-effect evaporators, water-side boiler tubes and process heat exchangers.","md",{},true,"\u002Fglossary\u002Fscaling",[93,185,186],"multi-effect-evaporator","cold-end-corrosion-dew-point-corrosion",{"title":188,"description":189},"Scaling — mineral-deposit fouling typically associated with liquid-side equipment","Scaling is the deposition of inorganic mineral salts on heat-transfer surfaces, usually on the liquid side. Distinct from gas-side fouling; primarily addressed by chemical or mechanical means.",[191],{"title":192,"url":193},"Wikipedia — Fouling","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFouling","glossary\u002Fscaling","Scaling (process)","iNgGAR6V18DGw1iG00M5EiTgVDd_BGRv66ubfmL4mVw",[198,378,450],{"id":199,"title":161,"aliases":200,"body":203,"category":93,"description":365,"extension":180,"meta":366,"navigation":182,"path":92,"relatedTerms":367,"seo":370,"sources":373,"stem":375,"term":376,"__hash__":377},"glossary\u002Fglossary\u002Ffouling.md",[201,202],"process fouling","heat-transfer fouling",{"type":52,"value":204,"toc":360},[205,267,271,309,313,325,327],[55,206,207,209,210,214,215,214,219,214,223,214,227,214,231,214,235,214,239,243,244,214,248,214,251,214,255,214,259,214,263,266],{},[58,208,161],{}," is the accumulation of unwanted deposits on the surfaces of process equipment. It is the universal phenomenon that connects every application Sylio addresses: ",[62,211,213],{"href":212},"\u002Fglossary\u002Fboiler","boilers",", ",[62,216,218],{"href":217},"\u002Fglossary\u002Felectrostatic-precipitator","ESPs",[62,220,222],{"href":221},"\u002Fglossary\u002Fbaghouse","baghouses",[62,224,226],{"href":225},"\u002Fglossary\u002Fselective-catalytic-reduction","SCR catalysts",[62,228,230],{"href":229},"\u002Fglossary\u002Fhopper","hoppers and silos",[62,232,234],{"href":233},"\u002Fglossary\u002Fheat-recovery-steam-generator","HRSGs",[62,236,238],{"href":237},"\u002Fglossary\u002Fpreheater-tower","cement preheaters",[62,240,242],{"href":241},"\u002Fglossary\u002Frecovery-boiler","recovery boilers",". Different industries use different specific names for the resulting deposits — ",[62,245,247],{"href":246},"\u002Fglossary\u002Fslagging","slagging",[62,249,250],{"href":183},"scaling",[62,252,254],{"href":253},"\u002Fglossary\u002Fcoking","coking",[62,256,258],{"href":257},"\u002Fglossary\u002Fbridging","bridging",[62,260,262],{"href":261},"\u002Fglossary\u002Fbuild-up-coating-accretion","coating",[62,264,265],{"href":261},"build-up"," — but fouling is the umbrella that connects them.",[68,268,270],{"id":269},"consequences-of-fouling","Consequences of fouling",[154,272,273,279,285,291,297,303],{},[157,274,275,278],{},[58,276,277],{},"Heat-transfer loss"," — reducing thermal efficiency and raising fuel cost",[157,280,281,284],{},[58,282,283],{},"Pressure-drop rise"," — derating fans and raising power consumption",[157,286,287,290],{},[58,288,289],{},"Flow blockage"," — interrupting material flow in storage and process vessels",[157,292,293,296],{},[58,294,295],{},"Tube corrosion"," — beneath the deposit, accelerated by local chemistry",[157,298,299,302],{},[58,300,301],{},"Forced outages"," — when fouling becomes severe enough to force a shutdown",[157,304,305,308],{},[58,306,307],{},"Emission excursions"," — when air-pollution-control equipment loses effectiveness",[68,310,312],{"id":311},"mitigation-philosophy","Mitigation philosophy",[55,314,315,316,320,321,324],{},"The Sylio philosophy is ",[317,318,319],"em",{},"prevention over remediation",". Continuous low-amplitude ",[62,322,323],{"href":146},"sonic-horn"," cleaning keeps deposits from consolidating into the bonded layers that demand intensive periodic cleaning. The economic case is clear: every avoided forced outage typically justifies the entire acoustic-cleaning installation.",[68,326,152],{"id":151},[154,328,329,334,338,343,349,355],{},[157,330,331],{},[62,332,333],{"href":246},"Slagging",[157,335,336],{},[62,337,47],{"href":183},[157,339,340],{},[62,341,342],{"href":253},"Coking",[157,344,345],{},[62,346,348],{"href":347},"\u002Fglossary\u002Fsintering-deposit","Sintering (deposit)",[157,350,351],{},[62,352,354],{"href":353},"\u002Fglossary\u002Fheat-transfer-surface-fouling","Heat-transfer surface fouling",[157,356,357],{},[62,358,359],{"href":146},"Sonic horn",{"title":174,"searchDepth":175,"depth":175,"links":361},[362,363,364],{"id":269,"depth":175,"text":270},{"id":311,"depth":175,"text":312},{"id":151,"depth":175,"text":152},"Fouling is the accumulation of unwanted deposits on the surfaces of process equipment. It is the universal phenomenon that connects every application Sylio addresses: boilers, ESPs, baghouses, SCR catalysts, hoppers and silos, HRSGs, cement preheaters, recovery boilers. Different industries use different specific names for the resulting deposits — slagging, scaling, coking, bridging, coating, build-up — but fouling is the umbrella that connects them.",{},[247,250,254,368,369,323],"sintering-deposit","heat-transfer-surface-fouling",{"title":371,"description":372},"Fouling — accumulation of unwanted deposits on process equipment surfaces","Fouling is the accumulation of unwanted deposits on process-equipment surfaces. The general umbrella term covering slagging, scaling, coking, sintering and many other specific mechanisms.",[374],{"title":192,"url":193},"glossary\u002Ffouling","Fouling (general)","vsFkT5ifjz3ggye30lYBeL42wZVcgPLYcyF9bwo9YnA",{"id":379,"title":166,"aliases":380,"body":384,"category":435,"description":436,"extension":180,"meta":437,"navigation":182,"path":64,"relatedTerms":438,"seo":441,"sources":444,"stem":448,"term":166,"__hash__":449},"glossary\u002Fglossary\u002Fmulti-effect-evaporator.md",[381,382,383],"multiple-effect evaporator","evaporator train","kraft evaporator",{"type":52,"value":385,"toc":430},[386,402,406,409,413,416,418],[55,387,388,389,392,393,397,398,401],{},"A ",[58,390,391],{},"multi-effect evaporator"," train concentrates ",[62,394,396],{"href":395},"\u002Fglossary\u002Fblack-liquor","kraft black liquor"," from ~15% solids (as it exits pulping) to 70–75% solids before it can be burned in the ",[62,399,400],{"href":241},"recovery boiler",". The train consists of 5–7 evaporator effects operating at descending pressure and temperature, each one driven by the vapour from the effect upstream — a counter-flow design that minimises live-steam consumption.",[68,403,405],{"id":404},"scaling-and-fouling","Scaling and fouling",[55,407,408],{},"Black-liquor evaporators scale heavily with sodium-rich inorganic deposits, particularly in the high-solids final effects. Periodic water-washing of the evaporator tube bundles is part of routine mill maintenance.",[68,410,412],{"id":411},"sonic-horn-relevance","Sonic-horn relevance",[55,414,415],{},"The evaporators themselves are mostly liquid-side equipment and rarely benefit from gas-side acoustic cleaning. The downstream recovery boiler is where Sylio's products engage with the kraft chemical-recovery cycle most directly.",[68,417,152],{"id":151},[154,419,420,425],{},[157,421,422],{},[62,423,424],{"href":395},"Black liquor",[157,426,427],{},[62,428,429],{"href":241},"Recovery boiler",{"title":174,"searchDepth":175,"depth":175,"links":431},[432,433,434],{"id":404,"depth":175,"text":405},{"id":411,"depth":175,"text":412},{"id":151,"depth":175,"text":152},"pulp-paper","A multi-effect evaporator train concentrates kraft black liquor from ~15% solids (as it exits pulping) to 70–75% solids before it can be burned in the recovery boiler. The train consists of 5–7 evaporator effects operating at descending pressure and temperature, each one driven by the vapour from the effect upstream — a counter-flow design that minimises live-steam consumption.",{},[439,440],"black-liquor","recovery-boiler",{"title":442,"description":443},"Multi-effect evaporator — concentrates kraft black liquor for the recovery boiler","A multi-effect evaporator train concentrates weak kraft black liquor from 15% solids to 70-75% solids before it can be burned in the recovery boiler.",[445],{"title":446,"url":447},"Wikipedia — Multiple-effect evaporator","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMultiple-effect_evaporator","glossary\u002Fmulti-effect-evaporator","L-SK9ASIZZz4l5cv_JUiWii8E9IOjzxsxbAL2rs7KHY",{"id":451,"title":172,"aliases":452,"body":456,"category":568,"description":569,"extension":180,"meta":570,"navigation":182,"path":171,"relatedTerms":571,"seo":575,"sources":578,"stem":582,"term":583,"__hash__":584},"glossary\u002Fglossary\u002Fcold-end-corrosion-dew-point-corrosion.md",[453,454,455],"cold end corrosion","dew point corrosion","sulphuric acid corrosion (boiler)",{"type":52,"value":457,"toc":563},[458,483,487,490,505,508,512,533,535],[55,459,460,463,464,467,468,472,473,477,478,482],{},[58,461,462],{},"Cold-end corrosion"," (also ",[317,465,466],{},"dew-point corrosion",") is the attack on boiler ",[62,469,471],{"href":470},"\u002Fglossary\u002Fair-heater","air-heater"," baskets, ",[62,474,476],{"href":475},"\u002Fglossary\u002Feconomiser","economiser"," tubes and downstream ducting where flue-gas temperature falls below the ",[62,479,481],{"href":480},"\u002Fglossary\u002Facid-dew-point","acid dew point"," of the gas. SO₃ in the flue gas combines with water vapour to form sulphuric acid that condenses on the cooled surfaces and attacks them.",[68,484,486],{"id":485},"the-interplay-with-fouling","The interplay with fouling",[55,488,489],{},"Cold-end corrosion and fouling reinforce each other:",[154,491,492,495,498],{},[157,493,494],{},"Condensed acid bonds dust to surfaces — fouling consolidates faster",[157,496,497],{},"Fouled tubes run cooler than design — more acid condenses",[157,499,500,504],{},[62,501,503],{"href":502},"\u002Fglossary\u002Fammonium-bisulphate","Ammonium bisulphate (ABS)"," deposits accelerate both processes",[55,506,507],{},"The result is a self-feeding cycle: a unit that begins to foul typically also begins to corrode, and both worsen until the cold end is water-washed or rebuilt.",[68,509,511],{"id":510},"mitigation","Mitigation",[154,513,514,519,522,525,528],{},[157,515,516,517],{},"Maintain cold-end metal temperature above the ",[62,518,481],{"href":480},[157,520,521],{},"Manage fuel sulphur and SCR SO₂\u002FSO₃ conversion",[157,523,524],{},"Use corrosion-resistant materials (Cor-Ten, enamel-coated baskets) at the cold end",[157,526,527],{},"Periodic water-washing of cold-end baskets and tubes",[157,529,530,532],{},[62,531,147],{"href":146}," to keep deposits from consolidating",[68,534,152],{"id":151},[154,536,537,542,547,552,557],{},[157,538,539],{},[62,540,541],{"href":470},"Air heater",[157,543,544],{},[62,545,546],{"href":475},"Economiser",[157,548,549],{},[62,550,551],{"href":502},"Ammonium bisulphate",[157,553,554],{},[62,555,556],{"href":480},"Acid dew point",[157,558,559],{},[62,560,562],{"href":561},"\u002Fglossary\u002Fboiler-tube-failure","Boiler tube failure",{"title":174,"searchDepth":175,"depth":175,"links":564},[565,566,567],{"id":485,"depth":175,"text":486},{"id":510,"depth":175,"text":511},{"id":151,"depth":175,"text":152},"boiler","Cold-end corrosion (also dew-point corrosion) is the attack on boiler air-heater baskets, economiser tubes and downstream ducting where flue-gas temperature falls below the acid dew point of the gas. SO₃ in the flue gas combines with water vapour to form sulphuric acid that condenses on the cooled surfaces and attacks them.",{},[471,476,572,573,574],"ammonium-bisulphate","acid-dew-point","boiler-tube-failure",{"title":576,"description":577},"Cold-end corrosion — sulphuric-acid attack at the boiler's coolest point","Cold-end corrosion is the attack on air-heater and economiser surfaces below the acid dew point, where SO3 condenses as sulphuric acid. The leading cold-end failure mechanism.",[579],{"title":580,"url":581},"POWER Magazine — SO3's impacts on plant O&M","https:\u002F\u002Fwww.powermag.com\u002Fso3s-impacts-on-plant-om-part-ii\u002F","glossary\u002Fcold-end-corrosion-dew-point-corrosion","Cold-end corrosion and dew-point corrosion","IO_wdcX5SRjrSEY4SMku6RmkWNHXkuMTmeI4uHpz1dI",1782613738869]