Explosion-proof FFU Filter Complete Selection Scheme (divided into 6 major dimensions, applicable to lithium battery \/ pharmaceutical \/ chemical industries)
\nSelection logic sequence: First determine the explosion-proof working condition \u2192 Cleanliness level \u2192 Filter material \u2192 Structural form \u2192 Matching pre-filter \u2192 Dimension sealing, while taking into account explosion-proof safety and service life.
\nI. Step 1: Select filter materials based on the flammable and explosive media in the workshop (core of explosion-proof, priority judgment)
\n1. Lithium battery workshop (electrolyte, NMP, lithium powder, organic solvents)
\nMedia characteristics: prone to crystallization, oily, combustible dust, high humidity
\nRecommendation: PTFE-coated H13\/H14 high-efficiency filter
\nAdvantage: Surface filtration, dust does not penetrate the filter paper; resistant to electrolyte and organic solvents; hydrophobic and moisture-proof; dust accumulation can be blown away, life is more than 50% longer than glass fiber
\nNot recommended: Ordinary glass fiber, easily soaked by electrolyte and clogged, resistance rapidly rises.
\n2. Pharmaceutical \/ medical device explosion-proof area (alcohol, small amount of solvents, low dust)
\nMedia characteristics: Small amount of alcohol solvents, dry and clean, low dust
\nRecommendation: Ultra-fine glass fiber without partition H14
\nAdvantage: Stable filtration accuracy, initial wind pressure low, low cost, meets GMP cleanliness requirements; clean working condition, sufficient service life.
\n3. Fine chemical, daily chemical filling (large amounts of alcohol, isopropanol, oil mist)
\nRecommendation: PTFE-coated high-efficiency; can be combined with pre-filter for oil removal for severe oil contamination
\nProhibition: PP melt-blown filter material, organic solvents will destroy static electricity, filtration efficiency quickly fails.
\n4. Low-dust explosion-proof laboratory, optical assembly (almost no solvents or dust)
\nRecommendation: Ordinary glass fiber without partition H13, the most cost-effective.
\nII. Step 2: Determine filtration efficiency grade according to cleanliness requirements
\nClass 100 \/ ISO5 cleanroom: H14 ULPA \/ high-efficiency filter
\nClass 1,000, 10,000 ISO6~7 clean explosion-proof area: H13 HEPA
\nFFU top pre-filter (protecting the high-efficiency): G3\/G4 initial dust-proof net, must be equipped, significantly extends the life of the high-efficiency filter
\nHard explosion-proof requirements: Do not reduce the filtration grade, dust accumulation inside the equipment will form a combustible dust hazard.
\nIII. Step 3: Select structural form (no partition vs. flat with partition)
\n1. Select no partition high-efficiency (most standard ceiling explosion-proof FFU)
\nApplicable scenarios:
\nCeiling height is limited, original standard explosion-proof FFU does not need to change the box
\nPharmaceutical, low-dust electronics, intermittent operation workshop
\nAdvantage: Thin, initial pressure difference low, explosion-proof motor load small, temperature rise low, higher safety coefficient; cheaper consumables, installation simple.
\nShortcomings: Small dust capacity, high-dust lithium battery workshop requires frequent replacement.
\n2. Select flat with partition high-efficiency (customized deep-box explosion-proof FFU)
\nApplicable scenarios:
\nLithium battery coating, injection, chemical, etc. high-pollution 24-hour continuous production line
\nLarge air volume, high static pressure working conditions, want to reduce filter core replacement downtime
\nAdvantage: Large filtration area, high dust capacity, life extends by 20%~30%; aluminum foil support not prone to deformation, large gap for cleaning crystalline dust.
\nShortcomings: Thick requires customized FFU box, initial resistance is high, increases the load on the fan.
\nIV. Step 4: Pressure difference and fan matching (key to explosion-proof safety)
\nExplosion-proof motor does not allow long-term overload, high temperature, priority select initial resistance low filter core
\nGlass fiber without partition: initial 120\u2013160Pa, compatible with conventional explosion-proof FFU motor;
\nFlat with partition: initial 160\u2013200Pa, need to confirm sufficient static pressure reserve of the fan;
\nLithium battery high-pollution working conditions: termination replacement pressure difference is recommended to set at 280Pa, do not wait until 350Pa, to prevent motor overheating and generating ignition sources.
\nV. Step 5: Special environmental adaptation selection High humidity and condensation environment: Prefer PTFE film covering, non-creaking and non-aging; glass fiber is prone to moisture absorption and failure.
\nCorrosive acid and alkali vapors: PTFE is superior to ordinary glass fiber in chemical corrosion resistance.
\nHigh flammable dust content: Increase the dust holding structure (with partitions \/ V-shaped deep pleats) to avoid short-term blockage.
\n24-hour continuous operation: Avoid thin models without partitions, prefer models with partitions or PTFE film covering.
\nSixth step: Dimension, sealing, and matching accessories selection
\nDimension: Strictly match the length, width, and thickness of the internal card slots of the explosion-proof FFU. Non-standard dimensions require customization to avoid air leakage;
\nSealing: Select an integrated foam PU edge frame with good elasticity, preventing side leakage in the explosion-proof clean area; prohibit hard non-sealed edge frames;
\nPre-filtering combination: All explosion-proof FFU must be equipped with G4 primary dust filter screens to intercept large dust and reduce the load on the high-efficiency filter;
\nExplosion-proof matching requirements: Filter elements do not contain flammable sponge or plastic accessories, all made of flame-retardant materials.
\nQuick selection comparison table<\/p>\n
| Workshop conditions<\/td>\n | Recommended filter material<\/td>\n | Recommended structure<\/td>\n<\/tr>\n |
| Lithium battery coating \/ Electrolyte injection<\/td>\n | PTFE coated H13<\/td>\n | Plate with partition<\/td>\n<\/tr>\n |
| Pharmaceutical aseptic explosion-proof workshop<\/td>\n | Fiberglass H14<\/td>\n | No partition board<\/td>\n<\/tr>\n |
| Cosmetics and alcohol filling workshop<\/td>\n | PTFE coated H13<\/td>\n | Without partition (moderately contaminated)<\/td>\n<\/tr>\n |
| Explosion-proof Optical Laboratory<\/td>\n | Glass fiber H13<\/td>\n | No partition board<\/td>\n<\/tr>\n |
| High dust content chemical production line with 24-hour operation<\/td>\n | PTFE coated H14<\/td>\n | V-shaped deep pleat efficiency<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n VIII. Model Selection and Risk Avoidance (Explosion-proof Red Line) Explosion-proof FFU Filter Complete Selection Scheme (divided into 6 major dimensions, applicable to lithium battery \/ pharmaceutical \/ chemical industries) Selection logic sequence: First determine the explosion-proof working condition \u2192 Cleanliness level \u2192 Filter material \u2192 Structural form \u2192 Matching pre-filter \u2192 Dimension sealing, while taking into account explosion-proof safety and service life. I. Step […]<\/p>","protected":false},"author":12,"featured_media":5393,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5631","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/comments?post=5631"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5631\/revisions"}],"predecessor-version":[{"id":5632,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5631\/revisions\/5632"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media\/5393"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media?parent=5631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/categories?post=5631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/tags?post=5631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |