[{"data":1,"prerenderedAt":399},["ShallowReactive",2],{"site-footer-common":3,"glossary:multi-cyclone-multiclone":45,"glossary-related:multi-cyclone-multiclone":179},{"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":160,"description":161,"extension":162,"meta":163,"navigation":164,"path":165,"relatedTerms":166,"seo":169,"sources":172,"stem":176,"term":177,"__hash__":178},"glossary\u002Fglossary\u002Fmulti-cyclone-multiclone.md","Multi-cyclone (multiclone)",[49,50,51],"multiclone","multicyclone","cyclone bank",{"type":53,"value":54,"toc":153},"minimark",[55,83,88,120,124,136,140],[56,57,58,59,63,64,66,67,72,73,77,78,82],"p",{},"A ",[60,61,62],"strong",{},"multi-cyclone"," (or ",[60,65,49],{},") is a parallel array of many small ",[68,69,71],"a",{"href":70},"\u002Fglossary\u002Fcyclone-separator","cyclone separators"," housed in a single enclosure. The arrangement gives higher collection efficiency than a single large cyclone of the same gas-handling capacity, because efficiency improves as cyclone diameter decreases. Multi-cyclones are common as pre-cleaners ahead of ",[68,74,76],{"href":75},"\u002Fglossary\u002Felectrostatic-precipitator","ESPs"," and ",[68,79,81],{"href":80},"\u002Fglossary\u002Fbaghouse","baghouses"," on coal-fired and biomass plants.",[84,85,87],"h2",{"id":86},"operational-issues","Operational issues",[89,90,91,98,104,114],"ul",{},[92,93,94,97],"li",{},[60,95,96],{},"Tube-to-tube flow imbalance"," — uneven gas distribution leaves some cyclones overloaded and under-performing",[92,99,100,103],{},[60,101,102],{},"Individual cyclone pluggage"," — a single fouled cyclone bypasses gas to its neighbours and reduces overall collection",[92,105,106,109,110],{},[60,107,108],{},"Common hopper bridging"," below the array — see ",[68,111,113],{"href":112},"\u002Fglossary\u002Fhopper","hopper",[92,115,116,119],{},[60,117,118],{},"Vortex finder fouling"," in individual tubes",[84,121,123],{"id":122},"cleaning","Cleaning",[56,125,126,130,131,135],{},[68,127,129],{"href":128},"\u002Fglossary\u002Fsonic-horn","Sonic horns"," installed on the common housing project sound across the cyclone array. They keep individual cyclone walls free of build-up and prevent the common hopper from ",[68,132,134],{"href":133},"\u002Fglossary\u002Fbridging","bridging",".",[84,137,139],{"id":138},"related-terms","Related terms",[89,141,142,147],{},[92,143,144],{},[68,145,146],{"href":70},"Cyclone separator",[92,148,149],{},[68,150,152],{"href":151},"\u002Fglossary\u002Fcyclone-dipleg","Cyclone dipleg",{"title":154,"searchDepth":155,"depth":155,"links":156},"",2,[157,158,159],{"id":86,"depth":155,"text":87},{"id":122,"depth":155,"text":123},{"id":138,"depth":155,"text":139},"hrsg-gas-path","A multi-cyclone (or multiclone) is a parallel array of many small cyclone separators housed in a single enclosure. The arrangement gives higher collection efficiency than a single large cyclone of the same gas-handling capacity, because efficiency improves as cyclone diameter decreases. Multi-cyclones are common as pre-cleaners ahead of ESPs and baghouses on coal-fired and biomass plants.","md",{},true,"\u002Fglossary\u002Fmulti-cyclone-multiclone",[167,168],"cyclone-separator","cyclone-dipleg",{"title":170,"description":171},"Multi-cyclone (multiclone) — parallel array of small cyclones","A multi-cyclone is a parallel array of many small cyclones in a common housing, used as a pre-cleaner ahead of ESPs and baghouses on coal and biomass plants.",[173],{"title":174,"url":175},"Wikipedia — Cyclonic separation","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCyclonic_separation","glossary\u002Fmulti-cyclone-multiclone","Multi-cyclone","7d6Ix4ItZdlgIpJDsebu9-hGxGcOvq5BSjD0MKZoPlk",[180,306],{"id":181,"title":146,"aliases":182,"body":186,"category":160,"description":292,"extension":162,"meta":293,"navigation":164,"path":70,"relatedTerms":294,"seo":299,"sources":302,"stem":304,"term":146,"__hash__":305},"glossary\u002Fglossary\u002Fcyclone-separator.md",[183,184,185],"cyclone","cyclones","gas cyclone",{"type":53,"value":187,"toc":286},[188,198,202,229,233,252,254,259,261],[56,189,58,190,193,194,197],{},[60,191,192],{},"cyclone separator"," removes particulate from a gas stream by centrifugal force: gas enters tangentially at the top of a vertical cylinder, spirals downward, and exits axially at the top through an inner pipe (vortex finder); heavier particles are thrown outward to the wall, slide down the conical bottom, and discharge through the ",[68,195,196],{"href":151},"dipleg"," below.",[84,199,201],{"id":200},"where-cyclones-are-used","Where cyclones are used",[89,203,204,211,218,226],{},[92,205,206,210],{},[68,207,209],{"href":208},"\u002Fglossary\u002Fcfb-boiler","CFB boiler"," primary separators — large-diameter, high-temperature",[92,212,213,217],{},[68,214,216],{"href":215},"\u002Fglossary\u002Fpreheater-cyclone","Cement preheater cyclones"," — multi-stage gas-to-meal heat exchange",[92,219,220,221,77,223,225],{},"Pre-cleaners ahead of ",[68,222,81],{"href":80},[68,224,76],{"href":75}," — knock out coarse dust to reduce downstream load",[92,227,228],{},"Process gas separation in chemical and refining duty",[84,230,232],{"id":231},"cyclone-fouling","Cyclone fouling",[89,234,235,241,247],{},[92,236,237,240],{},[60,238,239],{},"Wall build-up"," — dust accretes on the wall and gradually narrows the gas path; flow re-organises and efficiency drops",[92,242,243,246],{},[60,244,245],{},"Dipleg pluggage"," — separated material backs up in the dipleg, eventually re-entraining",[92,248,249,251],{},[60,250,118],{}," — alters internal swirl pattern",[84,253,123],{"id":122},[56,255,256,258],{},[68,257,129],{"href":128}," installed on the cyclone shell or dipleg keep wall deposits from consolidating. On cement preheater cyclones particularly, sonic horns are the standard preventive against the coatings that form under alternative-fuel firing.",[84,260,139],{"id":138},[89,262,263,268,272,276,281],{},[92,264,265],{},[68,266,267],{"href":165},"Multi-cyclone \u002F multiclone",[92,269,270],{},[68,271,152],{"href":151},[92,273,274],{},[68,275,209],{"href":208},[92,277,278],{},[68,279,280],{"href":215},"Preheater cyclone",[92,282,283],{},[68,284,285],{"href":128},"Sonic horn",{"title":154,"searchDepth":155,"depth":155,"links":287},[288,289,290,291],{"id":200,"depth":155,"text":201},{"id":231,"depth":155,"text":232},{"id":122,"depth":155,"text":123},{"id":138,"depth":155,"text":139},"A cyclone separator removes particulate from a gas stream by centrifugal force: gas enters tangentially at the top of a vertical cylinder, spirals downward, and exits axially at the top through an inner pipe (vortex finder); heavier particles are thrown outward to the wall, slide down the conical bottom, and discharge through the dipleg below.",{},[295,168,296,297,298],"multi-cyclone-multiclone","cfb-boiler","preheater-cyclone","sonic-horn",{"title":300,"description":301},"Cyclone separator — centrifugal particulate-removal device","A cyclone separator removes particulate from a gas stream by centrifugal force. Wall build-up and re-entrainment from the dipleg are the dominant operational issues.",[303],{"title":174,"url":175},"glossary\u002Fcyclone-separator","q8drrAFN5eVbx6KETEHT-VxRny2DelPTSLsYv0Fj2dU",{"id":307,"title":152,"aliases":308,"body":310,"category":160,"description":389,"extension":162,"meta":390,"navigation":164,"path":151,"relatedTerms":391,"seo":392,"sources":395,"stem":397,"term":152,"__hash__":398},"glossary\u002Fglossary\u002Fcyclone-dipleg.md",[196,309],"cyclone discharge leg",{"type":53,"value":311,"toc":384},[312,329,333,336,350,356,358,363,365],[56,313,314,315,318,319,321,322,77,325,328],{},"The ",[60,316,317],{},"cyclone dipleg"," is the vertical pipe at the bottom of a ",[68,320,192],{"href":70}," that carries separated solids out of the cyclone — either back into a recirculation loop (in ",[68,323,324],{"href":208},"CFB boilers",[68,326,327],{"href":215},"cement preheaters",") or into a discharge hopper.",[84,330,332],{"id":331},"pluggage-problems","Pluggage problems",[56,334,335],{},"Dipleg pluggage is one of the most operationally disruptive failures in any cyclone system. Once the dipleg blocks:",[89,337,338,341,344,347],{},[92,339,340],{},"Separated solids back up into the cyclone cone",[92,342,343],{},"Re-entrainment into the gas stream rises",[92,345,346],{},"Collection efficiency collapses",[92,348,349],{},"Process flow imbalance follows immediately",[56,351,352,353,355],{},"A single plugged dipleg can knock out an entire ",[68,354,62],{"href":165}," tube or a major CFB combustor.",[84,357,123],{"id":122},[56,359,360,362],{},[68,361,129],{"href":128}," mounted at the dipleg keep separated material flowing. On large industrial cyclones, multiple horns are sometimes distributed along the dipleg length to address pluggage at any elevation.",[84,364,139],{"id":138},[89,366,367,371,375,380],{},[92,368,369],{},[68,370,146],{"href":70},[92,372,373],{},[68,374,267],{"href":165},[92,376,377],{},[68,378,379],{"href":133},"Bridging",[92,381,382],{},[68,383,285],{"href":128},{"title":154,"searchDepth":155,"depth":155,"links":385},[386,387,388],{"id":331,"depth":155,"text":332},{"id":122,"depth":155,"text":123},{"id":138,"depth":155,"text":139},"The cyclone dipleg is the vertical pipe at the bottom of a cyclone separator that carries separated solids out of the cyclone — either back into a recirculation loop (in CFB boilers and cement preheaters) or into a discharge hopper.",{},[167,295,134,298],{"title":393,"description":394},"Cyclone dipleg — discharge pipe carrying separated solids out of a cyclone","The cyclone dipleg is the vertical pipe at the bottom of a cyclone separator that carries separated solids back to a hopper or recirculation circuit. Pluggage is a chronic operational issue.",[396],{"title":174,"url":175},"glossary\u002Fcyclone-dipleg","M5divQ_NkwLJVAAZQxTpbV41FvTKt5prwB1smwi2GSM",1782613743295]