How to use besmear to install off-gas treatment equipment to purify waste gas?

　　 Of the generation in car production process ” 3 abandon ” more link is product line of car besmear outfit, use besmear to install off-gas treatment equipment in besmear outfit process so special be necessary, if the car besmears a large number of organic exhaust emission that install the generation when be being produced arrive in atmosphere, will affect people badly healthy. Is that besmear installs off-gas treatment equipment to purify waste gas how undertake?

Besmear installs the technological process of off-gas treatment system: → of fan of → purifying device → purifies pretreatment of waste gas of → of firearm of block of → of cover of air of market of → of besmear outfit waste gas gas is discharged.

　　 1, waste gas is collected

According to already the organic waste gas that ground of can big limit produces besmear outfit is collected, undertake centralized handling, can satisfy again at the same time about organic waste gas ventilated the requirement that sanitation of pair of chroma, workshop and contact are restricted to be worth a respect.

(1) form of market air cover

Install the form of workshop workshop and floor characteristic according to besmear, and the amount that besmear furnish has and position, reasonable decorate vent; At the same time the basis besmears the risk that holds VOCs gas is spent, decide ventilation, if collect enrages temperature of the waste gas inside the cover and chroma cannot exorbitant, lest cohere happens inside conduit, so need assures certain ventilation, etc. In the meantime, waste gas chroma cannot exceed pH indicator of organic gas lower explosion limit 25% . Market air cover is commonly low suspend airtight cover or half airtight cover, basis of the dimension that overspread a mouth sucks wind speed and wind force to decide.

(2) ventilating duct design

Ventilating duct designs a standard, with the method that adjustment of velocity of flow balances, design computation to go out according to the wind speed inside the canal and wind force every besmear furnish equipment is inspiratory the tubal diameter of a canal of side, dry canal, calculate next the air pressure loss that exports to purifying device, chimney from market air cover, choose reasonable fan and purifying device according to the requirement. According to standard and safe requirement, can install 2 (1 is used, 1 reserves) explosion proof fan transports waste gas, use circular wind pipe, join collect enrages cover and fan and waste gas purifying device, the wind speed inside trunk wind canal is 10m/s left and right sides.

　　 2, block firearm and pretreatment equipment design

Before besmear installs off-gas treatment device to enter the mouth, need to set block firearm, the principle of block firearm is to use conduct heat and implement blaze of put out a fire of mural effect extinguish, prevent temper, by configuration cent is gauze model, ripple, poriferous edition, fill, water is sealed model etc. Much design of system of organic off-gas treatment is industry of general besmear outfit gauze, the 70 purposes steel wire that material uses a diameter to be 1mm 10, place 20 layers. Block firearm is general according to ” firearm of block of conduit of petroleum gas body ” (GB/T 13347-2010) undertake designing, cannot reduce a level at will, perhaps produce manufacturer to buy to block firearm. Additional, purify a system to set wind force even self-adjusting reach directive, chroma and temperature detect automatically and control, and accident warning decice.