[{"data":1,"prerenderedAt":731},["ShallowReactive",2],{"site-footer-common":3,"glossary:compartment-isolation":45,"glossary-related:compartment-isolation":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":51,"category":65,"description":162,"extension":163,"meta":164,"navigation":165,"path":166,"relatedTerms":167,"seo":171,"sources":174,"stem":178,"term":47,"__hash__":179},"glossary\u002Fglossary\u002Fcompartment-isolation.md","Compartment isolation",[49,50],"isolated compartment","offline compartment",{"type":52,"value":53,"toc":155},"minimark",[54,77,82,108,112,129,133],[55,56,57,60,61,66,67,71,72,76],"p",{},[58,59,47],"strong",{}," is the procedure of closing the inlet and outlet dampers on a single ",[62,63,65],"a",{"href":64},"\u002Fglossary\u002Fbaghouse","baghouse"," compartment so that compartment can be cleaned, inspected or have bags replaced while the rest of the baghouse continues to filter. It is a defining design feature of multi-compartment baghouses and the operational rhythm of ",[62,68,70],{"href":69},"\u002Fglossary\u002Freverse-air-baghouse","reverse-air"," and ",[62,73,75],{"href":74},"\u002Fglossary\u002Fshaker-baghouse","shaker"," cleaning systems.",[78,79,81],"h2",{"id":80},"routine-vs-maintenance-isolation","Routine vs maintenance isolation",[83,84,85,92],"ul",{},[86,87,88,91],"li",{},[58,89,90],{},"Routine isolation"," — part of the normal reverse-air or shaker cleaning cycle; each compartment is briefly isolated for cleaning then returned online",[86,93,94,97,98,102,103,107],{},[58,95,96],{},"Maintenance isolation"," — extended isolation for inspection, ",[62,99,101],{"href":100},"\u002Fglossary\u002Ffilter-bag","bag"," replacement, ",[62,104,106],{"href":105},"\u002Fglossary\u002Ftubesheet","tubesheet"," repair or hopper de-bridging; the compartment is locked out and tagged out per plant procedure",[78,109,111],{"id":110},"implications-for-the-other-compartments","Implications for the other compartments",[55,113,114,115,71,119,123,124,128],{},"When one compartment is isolated, total gas flow is redistributed across the remaining online compartments. The effective ",[62,116,118],{"href":117},"\u002Fglossary\u002Fair-to-cloth-ratio","air-to-cloth ratio",[62,120,122],{"href":121},"\u002Fglossary\u002Fcan-velocity","can velocity"," both rise, and ",[62,125,127],{"href":126},"\u002Fglossary\u002Fdifferential-pressure-baghouse","differential pressure"," climbs proportionally. Multi-compartment baghouses are sized so that the remaining compartments can carry the full duty during planned isolations.",[78,130,132],{"id":131},"related-terms","Related terms",[83,134,135,140,145,150],{},[86,136,137],{},[62,138,139],{"href":64},"Baghouse",[86,141,142],{},[62,143,144],{"href":69},"Reverse-air baghouse",[86,146,147],{},[62,148,149],{"href":74},"Shaker baghouse",[86,151,152],{},[62,153,154],{"href":100},"Filter bag",{"title":156,"searchDepth":157,"depth":157,"links":158},"",2,[159,160,161],{"id":80,"depth":157,"text":81},{"id":110,"depth":157,"text":111},{"id":131,"depth":157,"text":132},"Compartment isolation is the procedure of closing the inlet and outlet dampers on a single baghouse compartment so that compartment can be cleaned, inspected or have bags replaced while the rest of the baghouse continues to filter. It is a defining design feature of multi-compartment baghouses and the operational rhythm of reverse-air and shaker cleaning systems.","md",{},true,"\u002Fglossary\u002Fcompartment-isolation",[65,168,169,170],"reverse-air-baghouse","shaker-baghouse","filter-bag",{"title":172,"description":173},"Compartment isolation — taking one baghouse compartment offline","Compartment isolation is the procedure of closing inlet and outlet dampers on one baghouse compartment so it can be cleaned or have bags replaced while the rest stays online.",[175],{"title":176,"url":177},"Wikipedia — Baghouse","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaghouse","glossary\u002Fcompartment-isolation","eoA8ZSp8BBpMevfDx-l9ZBSdhneKGdu1Lr2As9DLsyE",[181,299,424,508],{"id":182,"title":139,"aliases":183,"body":187,"category":65,"description":286,"extension":163,"meta":287,"navigation":165,"path":64,"relatedTerms":288,"seo":292,"sources":295,"stem":297,"term":139,"__hash__":298},"glossary\u002Fglossary\u002Fbaghouse.md",[184,185,186],"baghouses","bag filter house","dust collector house",{"type":52,"value":188,"toc":281},[189,208,212,225,229,232,249,251],[55,190,191,192,194,195,197,198,202,203,207],{},"A ",[58,193,65],{}," is the structural enclosure that houses the bags, cages, cleaning system, ",[62,196,106],{"href":105},", ",[62,199,201],{"href":200},"\u002Fglossary\u002Fplenum-clean-side-dirty-side","plenums"," and hoppers of a ",[62,204,206],{"href":205},"\u002Fglossary\u002Ffabric-filter","fabric-filter"," dust collector. The word is used in both broad (\"the plant has a 12-compartment baghouse\") and narrow (\"a baghouse is the housing, the fabric filter is the system\") senses; in everyday industry practice the two terms overlap.",[78,209,211],{"id":210},"compartmented-design","Compartmented design",[55,213,214,215,219,220,224],{},"Large industrial baghouses are subdivided into several compartments — each with its own gas-flow damper — so that one compartment can be isolated for offline cleaning or bag replacement while the rest stay online. The standard ",[62,216,218],{"href":217},"\u002Fglossary\u002Fpulse-jet-baghouse","pulse-jet"," compartment count for utility duty is 8–16; cement and ",[62,221,223],{"href":222},"\u002Fglossary\u002Fwaste-to-energy","WtE"," baghouses may run 20+.",[78,226,228],{"id":227},"why-sonic-horns-help","Why sonic horns help",[55,230,231],{},"Sonic horns mounted at compartment level address fouling that the primary cleaning system (pulse-jet, reverse-air or shaker) cannot reach:",[83,233,234,237,243,246],{},[86,235,236],{},"Bag-row dead zones at the back of the compartment",[86,238,239,242],{},[62,240,241],{"href":105},"Tubesheet"," area dust deposits",[86,244,245],{},"Hopper bridging below the bags",[86,247,248],{},"Inlet-plenum dust dropout",[78,250,132],{"id":131},[83,252,253,258,263,267,271,275],{},[86,254,255],{},[62,256,257],{"href":205},"Fabric filter",[86,259,260],{},[62,261,262],{"href":217},"Pulse-jet baghouse",[86,264,265],{},[62,266,144],{"href":69},[86,268,269],{},[62,270,149],{"href":74},[86,272,273],{},[62,274,47],{"href":166},[86,276,277],{},[62,278,280],{"href":279},"\u002Fglossary\u002Fsonic-horn","Sonic horn",{"title":156,"searchDepth":157,"depth":157,"links":282},[283,284,285],{"id":210,"depth":157,"text":211},{"id":227,"depth":157,"text":228},{"id":131,"depth":157,"text":132},"A baghouse is the structural enclosure that houses the bags, cages, cleaning system, tubesheet, plenums and hoppers of a fabric-filter dust collector. The word is used in both broad (\"the plant has a 12-compartment baghouse\") and narrow (\"a baghouse is the housing, the fabric filter is the system\") senses; in everyday industry practice the two terms overlap.",{},[206,289,168,169,290,291],"pulse-jet-baghouse","compartment-isolation","sonic-horn",{"title":293,"description":294},"Baghouse — vessel that houses fabric-filter bags for industrial dust control","A baghouse is the structural enclosure that holds the bags, cages, tubesheet, cleaning system and hoppers of a fabric-filter dust collector. Sized in compartments for online isolation.",[296],{"title":176,"url":177},"glossary\u002Fbaghouse","TraeRQp5lNGOrkFkwjsoYRrhIIRrMkFonwryXyc1wGw",{"id":300,"title":144,"aliases":301,"body":304,"category":65,"description":411,"extension":163,"meta":412,"navigation":165,"path":69,"relatedTerms":413,"seo":414,"sources":417,"stem":422,"term":144,"__hash__":423},"glossary\u002Fglossary\u002Freverse-air-baghouse.md",[302,303],"reverse air baghouse","RA baghouse",{"type":52,"value":305,"toc":406},[306,316,320,372,376,386,388],[55,307,191,308,311,312,315],{},[58,309,310],{},"reverse-air baghouse"," cleans its ",[62,313,314],{"href":100},"filter bags"," by isolating one compartment at a time from the main gas flow and forcing low-pressure clean air through the bags in the reverse direction. The reverse flow gently collapses the cake from the bag surface, which then falls into the hopper. Reverse-air design is common on coal-fired utility-boiler baghouses and on older industrial installations.",[78,317,319],{"id":318},"strengths-and-weaknesses","Strengths and weaknesses",[321,322,323,336],"table",{},[324,325,326],"thead",{},[327,328,329,333],"tr",{},[330,331,332],"th",{},"Strength",[330,334,335],{},"Weakness",[337,338,339,348,356,364],"tbody",{},[327,340,341,345],{},[342,343,344],"td",{},"Gentle cleaning extends bag life",[342,346,347],{},"Compartment must be offline during cleaning",[327,349,350,353],{},[342,351,352],{},"Low compressed-air consumption",[342,354,355],{},"Requires a larger total bag area for the same duty",[327,357,358,361],{},[342,359,360],{},"Tolerates long fibreglass bags",[342,362,363],{},"Slower cleaning cycle",[327,365,366,369],{},[342,367,368],{},"Lower bag wear than pulse-jet",[342,370,371],{},"Cleaning intensity not easily varied",[78,373,375],{"id":374},"where-sonic-horns-help","Where sonic horns help",[55,377,378,379,382,383,385],{},"The gentle nature of reverse-air cleaning leaves residual cake that gradually accumulates over time. ",[62,380,381],{"href":279},"Sonic horns"," mounted at the compartment roof break up the residual cake without the bag wear of more aggressive primary cleaning, defer the need for offline manual cleaning and reduce average ",[62,384,127],{"href":126},".",[78,387,132],{"id":131},[83,389,390,394,398,402],{},[86,391,392],{},[62,393,139],{"href":64},[86,395,396],{},[62,397,154],{"href":100},[86,399,400],{},[62,401,47],{"href":166},[86,403,404],{},[62,405,280],{"href":279},{"title":156,"searchDepth":157,"depth":157,"links":407},[408,409,410],{"id":318,"depth":157,"text":319},{"id":374,"depth":157,"text":375},{"id":131,"depth":157,"text":132},"A reverse-air baghouse cleans its filter bags by isolating one compartment at a time from the main gas flow and forcing low-pressure clean air through the bags in the reverse direction. The reverse flow gently collapses the cake from the bag surface, which then falls into the hopper. Reverse-air design is common on coal-fired utility-boiler baghouses and on older industrial installations.",{},[65,170,290,291],{"title":415,"description":416},"Reverse-air baghouse — offline compartment cleaning with low-pressure flow","A reverse-air baghouse cleans bags by isolating a compartment and passing low-pressure clean air through the bags in the reverse direction. Common on coal-fired utility duty.",[418,419],{"title":176,"url":177},{"title":420,"url":421},"Neundorfer — Sonic Horns to Enhance RA & Shaker Cleaning","https:\u002F\u002Fwww.neundorfer.com\u002Fknowledge-base\u002Fsonic-horns-to-enhance-ra-shaker-cleaning\u002F","glossary\u002Freverse-air-baghouse","p4ieVvZkXENtxj82QpCOylgn5v4YyCV30-4Gs7cy1JE",{"id":425,"title":149,"aliases":426,"body":429,"category":65,"description":497,"extension":163,"meta":498,"navigation":165,"path":74,"relatedTerms":499,"seo":500,"sources":503,"stem":506,"term":149,"__hash__":507},"glossary\u002Fglossary\u002Fshaker-baghouse.md",[427,428],"shaker filter","mechanical shaker baghouse",{"type":52,"value":430,"toc":492},[431,442,446,460,464,472,474],[55,432,191,433,311,436,438,439,441],{},[58,434,435],{},"shaker baghouse",[62,437,314],{"href":100}," by mechanically shaking the bag-support frame during a compartment-offline cycle. The shake action flexes the bag fabric, cracks the cake and lets it fall into the hopper. Shaker design is a legacy technology still used on smaller industrial duty (machining shop dust collection, light foundry exhaust, light cement applications) but largely displaced for new installations by ",[62,440,218],{"href":217}," designs.",[78,443,445],{"id":444},"limitations","Limitations",[83,447,448,451,454,457],{},[86,449,450],{},"High mechanical wear on bag attachments, fabric and shaker motors",[86,452,453],{},"Slow cleaning cycle, requires compartment isolation",[86,455,456],{},"Limited filtration capacity per footprint",[86,458,459],{},"Difficult to scale to large industrial throughput",[78,461,463],{"id":462},"why-sonic-horns-help-on-shaker-baghouses","Why sonic horns help on shaker baghouses",[55,465,466,467,469,470,385],{},"Shaker cleaning is fundamentally gentle and uneven, leaving cake residue between cycles. ",[62,468,381],{"href":279}," supplement the shake action without adding mechanical wear, improve cleaning consistency across the bag rows and reduce overall ",[62,471,127],{"href":126},[78,473,132],{"id":131},[83,475,476,480,484,488],{},[86,477,478],{},[62,479,139],{"href":64},[86,481,482],{},[62,483,154],{"href":100},[86,485,486],{},[62,487,47],{"href":166},[86,489,490],{},[62,491,280],{"href":279},{"title":156,"searchDepth":157,"depth":157,"links":493},[494,495,496],{"id":444,"depth":157,"text":445},{"id":462,"depth":157,"text":463},{"id":131,"depth":157,"text":132},"A shaker baghouse cleans its filter bags by mechanically shaking the bag-support frame during a compartment-offline cycle. The shake action flexes the bag fabric, cracks the cake and lets it fall into the hopper. Shaker design is a legacy technology still used on smaller industrial duty (machining shop dust collection, light foundry exhaust, light cement applications) but largely displaced for new installations by pulse-jet designs.",{},[65,170,290,291],{"title":501,"description":502},"Shaker baghouse — mechanical bag-shaking dust collector","A shaker baghouse cleans bags by mechanically shaking the bag-support frame during compartment-offline cycles. Legacy design still common on light industrial duty.",[504,505],{"title":176,"url":177},{"title":420,"url":421},"glossary\u002Fshaker-baghouse","-kHviFn-6jRIteS8J4e1okgqwijwfO3wWxpbYyNN7lo",{"id":509,"title":154,"aliases":510,"body":512,"category":65,"description":716,"extension":163,"meta":717,"navigation":165,"path":100,"relatedTerms":718,"seo":724,"sources":727,"stem":729,"term":154,"__hash__":730},"glossary\u002Fglossary\u002Ffilter-bag.md",[314,511],"bag (baghouse)",{"type":52,"value":513,"toc":711},[514,532,536,547,640,644,679,681],[55,515,191,516,519,520,523,524,526,527,531],{},[58,517,518],{},"filter bag"," is the cylindrical fabric sock that traps particulate inside a ",[62,521,522],{"href":205},"fabric filter",". Bags are typically 120–300 mm in diameter and 2–10 m long, suspended vertically from the ",[62,525,106],{"href":105},", supported internally by a wire ",[62,528,530],{"href":529},"\u002Fglossary\u002Fbag-cage","bag cage"," and sealed at the top by a snap-band collar.",[78,533,535],{"id":534},"media-selection","Media selection",[55,537,538,539,71,543,385],{},"Bag media must match the application temperature, gas chemistry, dust load and cleaning system. See ",[62,540,542],{"href":541},"\u002Fglossary\u002Fp84-nomex-ryton-filter-media","P84 \u002F Nomex \u002F Ryton filter media",[62,544,546],{"href":545},"\u002Fglossary\u002Fptfe-membrane-filter-bag","PTFE membrane filter bag",[321,548,549,562],{},[324,550,551],{},[327,552,553,556,559],{},[330,554,555],{},"Material",[330,557,558],{},"Max continuous temp",[330,560,561],{},"Typical use",[337,563,564,575,586,597,608,619,630],{},[327,565,566,569,572],{},[342,567,568],{},"Polyester",[342,570,571],{},"135 °C",[342,573,574],{},"Cement, food, light industrial",[327,576,577,580,583],{},[342,578,579],{},"Polypropylene",[342,581,582],{},"90 °C",[342,584,585],{},"Wet chemistry, washdown",[327,587,588,591,594],{},[342,589,590],{},"Nomex (aramid)",[342,592,593],{},"200 °C",[342,595,596],{},"Asphalt, metallurgical",[327,598,599,602,605],{},[342,600,601],{},"P84 (polyimide)",[342,603,604],{},"240 °C",[342,606,607],{},"Cement, biomass",[327,609,610,613,616],{},[342,611,612],{},"Ryton (PPS)",[342,614,615],{},"190 °C",[342,617,618],{},"Coal-fired utility, sulphur-rich",[327,620,621,624,627],{},[342,622,623],{},"Fibreglass",[342,625,626],{},"260 °C",[342,628,629],{},"Cement, WtE high-temperature",[327,631,632,635,637],{},[342,633,634],{},"PTFE (Teflon)",[342,636,626],{},[342,638,639],{},"Aggressive chemistry, sub-mg outlet",[78,641,643],{"id":642},"failure-modes","Failure modes",[83,645,646,655,661,667,673],{},[86,647,648,654],{},[58,649,650],{},[62,651,653],{"href":652},"\u002Fglossary\u002Fbag-blinding","Bag blinding"," — pore choking that raises ΔP",[86,656,657,660],{},[58,658,659],{},"Abrasion"," — wear at the bottom of the bag from falling cake",[86,662,663,666],{},[58,664,665],{},"Thermal degradation"," — exceeding the media's continuous-service rating",[86,668,669,672],{},[58,670,671],{},"Hydrolysis \u002F acid attack"," — at the cold end below the acid dew point",[86,674,675,678],{},[58,676,677],{},"Cage corrosion"," — failure of the cage allows bag collapse",[78,680,132],{"id":131},[83,682,683,687,691,696,701,707],{},[86,684,685],{},[62,686,257],{"href":205},[86,688,689],{},[62,690,139],{"href":64},[86,692,693],{},[62,694,695],{"href":529},"Bag cage",[86,697,698],{},[62,699,700],{"href":545},"PTFE-membrane filter bag",[86,702,703],{},[62,704,706],{"href":705},"\u002Fglossary\u002Ffibreglass-filter-bag","Fibreglass filter bag",[86,708,709],{},[62,710,653],{"href":652},{"title":156,"searchDepth":157,"depth":157,"links":712},[713,714,715],{"id":534,"depth":157,"text":535},{"id":642,"depth":157,"text":643},{"id":131,"depth":157,"text":132},"A filter bag is the cylindrical fabric sock that traps particulate inside a fabric filter. Bags are typically 120–300 mm in diameter and 2–10 m long, suspended vertically from the tubesheet, supported internally by a wire bag cage and sealed at the top by a snap-band collar.",{},[206,65,719,720,721,722,723],"bag-cage","ptfe-membrane-filter-bag","fibreglass-filter-bag","p84-nomex-ryton-filter-media","bag-blinding",{"title":725,"description":726},"Filter bag — the cylindrical fabric element of a baghouse","A filter bag is the cylindrical fabric sock that traps particulate inside a fabric filter. Media selection depends on temperature, gas chemistry, dust load and cleaning cycle.",[728],{"title":176,"url":177},"glossary\u002Ffilter-bag","c5qm1D9QdtuF4K2dtGAjDJ_qJJmuF0iuEqVTUcRXqww",1782613721158]