1. Kuumbwa uye zvikamu zvikuru zvegasi rependi rinopfapfaidzwa
Maitiro ekupenda anoshandiswa zvakanyanya mumichina, mota, midziyo yemagetsi, midziyo yemumba, ngarava, fenicha nedzimwe nzvimbo dzeindasitiri.
Pendi yezvinhu zvisina kuchena —— pendi inoumbwa nezvinhu zvisingasvibi uye zvinopfava, zvisingasvibi kusanganisira zvinhu zvefirimu uye zvinhu zvemufirimu, chinhu chinoshandiswa kuderedza kupenda chinoshandiswa kuderedza kupenda, kuti pendi iite kuti ive yakatsetseka uye yakanaka.
Maitiro ekupfapfaidza pendi anonyanya kukonzera mhute yependi uye kusvibiswa kwegasi remarara eorganic, pendi iri pasi pesimba rekumanikidzwa kukuru kuita zvidimbu, painopfapfaidza, chikamu chependi hachina kusvika pamusoro pepfapfaidzo, kupararira nemhepo kuti igadzire mhute yependi; gasi remarara eorganic rinobva mukudonha kwemvura kubva mudiluent, organic solvent haina kubatanidzwa pamusoro pependi, pendi uye maitiro ekuporesa achaburitsa gasi remarara eorganic (mazana emakomponi eorganic anoshanduka, zvichiteerana ndeealkane, alkanes, olefin, aromatic compounds, alcohol, aldehyde, ketones, ester, ether, nezvimwe zvinhu).
2. Kunobva uye hunhu hwegasi rinobuda muutsi rinofukidza mota
Musangano wekupenda mota unofanirwa kuita basa rekugadzira pendi usati waisa pendi, electrophoresis uye kupfapfaidza pendi pachishandiso. Maitiro ekupenda anosanganisira kupfapfaidza, kuyerera uye kuomesa, uye mune izvi zvinogadzira gasi remarara eorganic (VOCs) uye kupfapfaidza, saka maitiro aya anofanira kupfapfaidza pendi yemukamuri.
(1) Gasi retsvina kubva muimba yekupenda pendi
Kuti pave nenzvimbo yekushanda yekupfapfaidza, zvinoenderana nemutemo weLabor Safety and Health Law, mhepo inofanira kuchinjwa nguva nenguva muimba yekupfapfaidza, uye kumhanya kwekuchinja kwemhepo kunofanirwa kudzorwa mukati me (0.25 ~ 1) m/s. Chimiro chikuru chegasi rinobuda mumhepo iorganic solvent yependi yekupfapfaidza, zvikamu zvayo zvikuru mahydrocarbon anonhuhwirira (matatu benzene uye asiri methane total hydrocarbon), alcohol ether, ester organic solvent, nekuti huwandu hwemhepo inobuda mukamuri yekupfapfaidza hwakakura kwazvo, saka huwandu hwese hwegasi rinobuda muorganic rakaderera zvikuru, kazhinji kacho anenge 100 mg/m3. Pamusoro pezvo, mhepo inobuda mukamuri yependi inowanzova nehuwandu hushoma hwependi isina kugadziriswa zvachose, kunyanya imba yekupfapfaidza yakaoma yependi, mhepo inobuda mumhepo, inogona kuva chipingamupinyi pakurapa gasi rinobuda, kurapwa gasi rinobuda mumhepo kunofanira kunge kuri kwekutanga.
(2) Gasi rinoraswa kubva muimba yekuomesera
Pendi yechiso mushure mekupfapfaidza isati yaoma, mhepo inoda kuyerera, organic solvent inonyorova muchikamu chekuomesa mhepo inoputika, kudzivirira mhepo yemukati yeorganic solvent kuunganidzwa kwetsaona, mhepo inofanira kunge iri mhepo inoramba ichienderera, mhepo inochinja kumhanya kazhinji inodzorwa ne0.2 m/s, chiutsi chinobva mumhepo uye chiutsi chinobva mumhepo, asi haina mhute yependi, huwandu hwegasi remarara eorganic hunopfuura chiutsi chinobva mumhepo, zvichienderana nehuwandu hwemarara emhepo, kazhinji muchikamu chegasi remarara emhepo mukamuri respray kanenge kaviri, inogona kusvika 300 mg/m3, kazhinji yakasanganiswa nechiutsi chinobva mumhepo mushure mekurapwa kwepakati. Uyezve, nzvimbo yependi, pendi yepamusoro pendi yetsvina yemvura inofanirawo kuburitsa gasi remarara rakafanana.
(3)Dgasi rinoburitsa utsi rinopisa
Kuumbwa kwegasi rinoomesa kwakaoma zvikuru, kuwedzera kune organic solvent, chikamu cheplasticizer kana resin monomer nezvimwe zvinhu zvinoshanduka, asi zvakare ine zvigadzirwa zvekuora kwekupisa, zvigadzirwa zve reaction. Electrophoretic primer uye solvent type topcoat drying zvine exhaust gas discharge, asi mutsauko wayo nekuwanda kwayo wakakura.
※Njodzi dzegasi rinobuda mumhepo rinopfapfaidza pendi:
Kubva muongororo iyi, zvinozivikanwa kuti gasi remarara rinobva muimba yekupfapfaidza, imba yekuomesa, imba yekusanganisa pendi uye imba yekuchenesa tsvina yependi ine huwandu hwakaderera uye inoyerera zvakanyanya, uye zvikamu zvikuru zvezvinosvibisa iaromatic hydrocarbons, alcohol ethers uye ester organic solvents. Sekureva kwe "Comprehensive Emission Standard for Air Pollution", huwandu hwegasi remarara aya hunowanzo kuve mukati memuganhu wekuburitsa. Kuti vakwanise kugadzirisa zvinodiwa nehuwandu hwekuburitsa muyero, mafekitori mazhinji emotokari anoshandisa nzira yekuburitsa tsvina munzvimbo dzakakwirira. Kunyangwe nzira iyi ichigona kusangana nezvinodiwa pari zvino zvekuburitsa tsvina, gasi remarara harina kurapwa, uye huwandu hwese hwekusvibisa gasi hunoburitswa netambo hombe yekudzivirira muviri hunogona kusvika mazana ematani, izvo zvinokonzera kukuvara kukuru mumhepo.
Mhute yependi mu organic solvent —— benzene, toluene, xylene chinhu chine chepfu chakasimba, chinoshanda mumhepo muworkshop, vashandi mushure mekufema nzira yekufema vanogona kukonzera chepfu yakakomba uye isingaperi, kunyanya kukonzera kukuvara kwehurongwa hwetsinga dzemukati neropa, kufema kwenguva pfupi kwakanyanya (kupfuura 1500 mg/m3) ye benzene vapor, kunogona kukonzera aplastic anemia, kazhinji kufema kwakaderera kwe benzene vapor kunogonawo kukonzera kurutsa, zviratidzo zvetsinga zvakaita sekuvhiringidzika.
※Kusarudzwa kwenzira yekurapa negesi yemarara yekupenda nekuputira pendi yekupfapfaidza:
Pakusarudza nzira dzekurapa organic, zvinhu zvinotevera zvinofanirwa kutariswa zvakanyanya: rudzi uye huwandu hwezvinhu zvinosvibisa organic, tembiricha yemushonga weorganic uye mwero wekuyerera kwemvura inobuda, huwandu hwezvinhu zvidiki, uye mwero wekudzora kusvibiswa kunofanirwa kuwanikwa.
1Spendi yekunamata patembiricha yemumba
Gasi rinobuda mumhepo kubva muimba yekupenda, imba yekuomesa, imba yekusanganisa pendi uye imba yekuchenesa tsvina ye topcoat ndiyo gasi rinobuda mumhepo tembiricha yekamuri rine huwandu hushoma uye kuyerera kukuru, uye musanganiswa mukuru wezvinosvibisa iaromatic hydrocarbons, alcohol ne ethers uye ester organic solvents. Sekureva kweGB16297 "Comprehensive Emission Standard for Air Pollution", huwandu hwegasi iri rinobuda mumhepo hunowanzova mukati memuganhu wekubuda mumhepo. Kuti vakwanise kugadzirisa zvinodiwa nehuwandu hwekubuda mumhepo muchiyero, mafekitori mazhinji emotokari anoshandisa nzira yekubuda mumhepo yakakwirira. Kunyangwe nzira iyi ichigona kusangana nezvinodiwa pari zvino zvekubuda mumhepo, gasi rinobuda mumhepo rakaderedzwa zvakanyanya pasina kurapwa, uye huwandu hwese hwekusvibisa gasi hunoburitswa netambo yakakura yekufukidza muviri hunogona kusvika mazana ematani, izvo zvinokonzera kukuvara kukuru mumhepo.
Kuti kuderedze kuburitswa kwemhepo inosvibisa, nzira dzakasiyana-siyana dzekurapa magasi anoburitsa mvura dzinogona kushandiswa pamwe chete pakurapa, asi mutengo wekurapa magasi anoburitsa mvura nemhepo yakawanda wakakwira zvikuru. Parizvino, nzira yakakura yekune dzimwe nyika ndeyekutanga yakabatana (nevhiri re adsorption-desorption kuti isanganise huwandu hwese hwenguva dzinenge gumi neshanu), kuitira kuderedza huwandu hwese hunofanirwa kurapwa, uye wobva washandisa nzira inoparadza kurapa magasi anorasa mvura akaomeswa. Kune nzira dzakafanana muChina, nzira yekutanga yekushandisa adsorption (activated carbon kana zeolite se adsorbent) yekuderedza huwandu hwemhepo, temperature room spray paint waste gas adsorption, ine high temperature gas desorption, concentrated waste gas uchishandisa catalytic combustion kana regenerative thermal combustion method yekurapa. Low concentration, normal temperature spray paint waste gas biological treatment method iri kugadzirwa, tekinoroji yemumba padanho razvino haisati yakura, asi zvakakosha kuiteerera. Kuti tinyatsoderedza kusvibiswa kwegasi rinoraswa rinofukidza vanhu, tinofanirawo kugadzirisa dambudziko iri kubva panobva zvinhu, zvakaita sekushandisa makapu anotenderera emagetsi nedzimwe nzira dzekuvandudza mwero wekushandiswa kwemachira, kugadzira machira akavakirwa mumvura uye mamwe machira ekudzivirira zvakatipoteredza.
2Dkurapwa kwemarara egasi
Gasi rekuomesa rinosanganiswa nepakati nepakati uye rakanyanya remarara anodziya, akakodzera kurapwa nenzira yekupiswa. Kuita kwekupiswa kune zvinhu zvitatu zvakakosha: nguva, tembiricha, kukanganiswa, ndiko kuti, kupiswa kwemamiriro e3T. Kushanda zvakanaka kwekurapa gasi rekuomesa ndiko kwakaringana kwekuita kwekupiswa uye zvinoenderana nekudzora kwemamiriro e3T kwekuita kwekupiswa. RTO inogona kudzora tembiricha yekupiswa (820~900℃) uye nguva yekugara (1.0~1.2s), uye kuve nechokwadi chekuti kukanganiswa kunodiwa (mhepo nezvinhu zvipenyu zvasanganiswa zvizere), kushanda zvakanaka kwekurapa kunosvika 99%, uye mwero wekupisa kwemarara wakakwira, uye kushandiswa kwesimba rekushanda kwakaderera. Mafekitori mazhinji emotokari ekuJapan muJapan neChina anowanzo shandisa RTO kurapa gasi rekuomesa rinodziya pakati (primer, medium coating, top coat drying). Semuenzaniso, Dongfeng Nissan passenger car Huadu coating line inoshandisa RTO centralized treatment ye coating drying exhaust gas exhaust effect yakanaka kwazvo, inosangana zvizere nezvinodiwa nemitemo yekubuda. Zvisinei, nekuda kwekushandiswa kwakawanda kwemidziyo yekurapa gasi reRTO kamwe chete, hazvina mari yakawanda pakurapa gasi remarara rine magasi madiki anoyerera.
Pamuchina wekugadzira machira wakapedzwa, kana paine mimwe michina yekurapa magasi emarara, sisitimu yekupisa magesi inochinja-chinja uye sisitimu yekupisa magesi inodzoreredza kupisa inogona kushandiswa. Sisitimu yekupisa magesi inochinja-chinja ine mari shoma uye inoshandisa simba shoma pakupisa.
Kazhinji, kushandiswa kwe / platinum sechinokonzeresa kunogona kuderedza tembiricha ye oxidizing yakawanda organic waste gas kusvika pa315℃. Catalytic combustion system inogona kushandiswa pakurapa marara ekuomesa, kunyanya yakakodzera magetsi ekuomesa uchishandisa nguva dzemagetsi dzinopisa, dambudziko riripo nderekuti ungadzivirira sei kukundikana kwe catalyst poisoning. Kubva pane zvakaitika kune vamwe vashandisi, kune general surface pendi drying waste gas, nekuwedzera marara gas filtration nezvimwe zviyero, zvinogona kuve nechokwadi chekuti hupenyu hwe catalyst huve makore 3 ~ 5; electrophoretic paint drying waste gas iri nyore kukonzera catalyst poisoning, saka kurapwa kwe electrophoretic paint drying waste gas kunofanira kungwarira uchishandisa catalytic combustion. Mukurapa marara gasi uye kushandurwa kweDongfeng commercial vehicle body coating line, marara gasi re electrophoretic primer drying rinorapwa nenzira ye RTO, uye marara gasi re top pendi drying rinorapwa nenzira ye catalytic combustion, uye mhedzisiro yekushandisa yakanaka.
※Maitiro ekurapa gasi rinopfapfaidzwa nependi:
Chirongwa chekurapa gasi rinopfapfaidzwa muindasitiri chinonyanya kushandiswa pakurapa gasi rinopfapfaidzwa mumakamuri, kugadzirisa gasi rinopfapfaidzwa mufekitori, kugadzirisa gasi rinopfapfaidzwa muindasitiri yekugadzira michina, kugadzirisa gasi rinopfapfaidzwa mufekitori, kugadzira mota uye kugadzirisa gasi rinopfapfaidzwa mumakamuri emotokari. Parizvino, kune nzira dzakasiyana-siyana dzekurapa, dzakadai se: nzira yekudzikisa mvura, nzira yekubvisa mvura, nzira yekupisa, nzira yekubvisa mvura, nzira yekubikisa, nzira yekubvisa mvura, nzira yebhayoloji uye nzira yeion.
1. Wnzira yekupfapfaidza mvura + kunyudzwa kwekabhoni yakakangwa uye kubviswa kwayo + kupiswa kwekabhoni
Kushandisa shongwe yekupfapfaidza kubvisa mhute yependi uye zvinhu zvinonyungudika mumvura, mushure mekusefa yakaoma, mumudziyo we activated carbon adsorption, senge activated carbon adsorption yakazara, wozobvisa (nzira yekubvisa ne steam stripping, electric heating, nitrogen stripping), mushure mekubvisa gasi (concentration yakawedzera kakawanda) nekubvisa fan mu catalytic combustion device combustion, kupiswa mu carbon dioxide nemvura, mushure mekubuda.
2. Wspray yemvura + activated carbon adsorption uye desorption + nzira yekudzoreredza condensation
Kushandisa spray tower kubvisa mhute yependi uye mvura inonyungudika, mushure mefirita yakaoma, mumudziyo we activated carbon adsorption, senge activated carbon adsorption yakazara, wozobvisa (nzira yekubvisa ne steam stripping, electric heating, nitrogen stripping), mushure mekugadzirisa waste gas adsorption concentration condensation, condensation inodzoserwa nezvinhu zvakakosha zve organic. Nzira iyi inoshandiswa pakurapa waste gas ne concentration yakakwira, tembiricha yakaderera uye low air volume. Asi nzira iyi yekudyara, kushandiswa kwesimba rakawanda, mari yekushandisa, spray paint exhaust gas "three benzene" uye mamwe exhaust gas concentration anowanzo kuve akaderera pane 300 mg/m3, low concentration, large air volume (automobile manufacturing pendi workshop air volume kazhinji iri pamusoro pe100000), uye nekuda kwekuti mota coating exhaust organic solvent composition, recycling solvent yakaoma kushandisa, uye iri nyore kugadzira kusvibiswa kwechipiri, saka coating mu waste gas treatment kazhinji haishandise nzira iyi.
3. Wnzira yekunyudza gasi re aste
Kunyudzwa kwegesi rinopfapfaidzwa pakurapa kunogona kukamurwa kuita kunyudzwa kwemakemikari uye kunyudzwa kwemuviri, asi basa remakemikari re "benzene" rakaderera, kazhinji harishandise kunyudzwa kwemakemikari. Mvura inonyudzwa mumuviri inonyudzwa zvishoma, uye inonyudzwa zvikamu zvine simba rakawanda rekudziyisa, kutonhodza uye kushandiswazve pakuongorora kunyudzwa kwemafuta. Nzira iyi inoshandiswa pakubviswa kwemhepo, tembiricha yakaderera, uye kuzara kwakaderera. Kuiswa kwacho kwakaoma, mari inoshandiswa yakawanda, sarudzo yemvura inonyudzwa yakaoma, kune kusvibiswa kuviri.
4. Akunyudzwa kwekabhoni kwakagadziriswa + michina yeUV photocatalytic oxidation
(1): zvakananga kuburikidza nekunyudzwa kwakananga kwegasi reorganic kuburikidza nekabhoni yakakangwa, kuti pave nekucheneswa kwe95%, michina iri nyore, mari shoma, kushanda kuri nyore, asi zvinoda kutsiva kabhoni yakakangwa kazhinji, huwandu hushoma hwezvinosvibisa, hapana kudzoreredzwa. (2) Nzira yekuwedzera: gasi reorganic mu activated carbon adsorption, activated carbon saturated air desorption uye regeneration.
5.Akunyudzwa kwekabhoni kwakagadziriswa + michina yeplasma inodziya zvishoma
Mushure mekunyudzwa kwekabhoni kutanga, wozoshandisa gasi replasma rinopisa zvishoma, rinozorapwa negasi rinobuda mumhepo, nzira yekubvisa gasi iri kushandisa plasma Plasma (ION plasma) kusvibiswa kwegasi remarara eorganic, kubvisa hwema, kuuraya mabhakitiriya, mavhairasi, kuchenesa mhepo kuenzanisa kwenyika dzepasi rose, nyanzvi dziri kumba nekune dzimwe nyika dzinonzi imwe ye tekinoroji huru ina dzesainzi yezvakatipoteredza muzana remakore rechi21. Chinhu chikuru chetekinoroji iyi kuburikidza nekubuda kwemhepo ine simba rakawanda muchimiro cheokisijeni inoshanda yeion (plasma), kuvhurwa kwegasi, kugadzira ma free radicals akasiyana-siyana, akadai seOH, HO2, O, nezvimwewo, benzene, toluene, xylene, ammonia, alkane nedzimwe gasi remarara eorganic, oxidation nezvimwe zviitiko zvakaoma zvemuviri nemakemikari, uye kubva pakugadzirwa kwezvinhu zvisina chepfu, kudzivirira kusvibiswa kwechipiri. Tekinoroji iyi ine hunhu hwekushandiswa kwesimba kwakaderera, nzvimbo diki, kushanda nyore uye kugadzirisa, uye inonyanya kukodzera kurapwa kwemagasi akasiyana-siyana.
Bpfupiso yematambudziko:
Pari zvino kune nzira dzakawanda dzekurapa dziri pamusika, kuti tikwanise kusangana nezvinodiwa nenyika uye zvemunharaunda, tinowanzo sarudza nzira dzakasiyana dzekurapa dzakabatana kurapa gasi rakasviba, kuti tisarudze zvinoenderana nemaitiro avo chaiwo ekurapa.
Nguva yekutumira: Zvita-28-2022
