1. Kuumbwa uye zvikamu zvikuru zvekupfapfaidza pendi tsvina gasi
Pendi maitiro anoshandiswa zvakanyanya mumakina, mota, midziyo yemagetsi, midziyo yemumba, ngarava, fenicha uye mamwe maindasitiri.
Paint raw material —— pendi inoumbwa neisiri-inoshanduka uye isingachinjiki, isingachinjiki inosanganisira chinhu chemufirimu uye chinobatsira firimu chinhu, volatile dilution agent inoshandiswa kudzikisa pendi, kuzadzisa chinangwa chependi yakatsetseka uye yakanaka.
Iyo pendi yekupfapfaidza muitiro inonyanya kubudisa pendi mhute uye organic tsvina gasi kusvibiswa, pendi pasi pechiito chepamusoro-soro muzvikamu, kana kumwaya, chikamu chependi hachina kusvika panzvimbo yepfapfaidzo, kupararira nemhepo inoyerera kuti iite mhute yepende; organic tsvina gasi kubva kuvhuvhuta kweiyo diluent, organic solvent haina kubatanidzwa nependi pamusoro, iyo pendi uye yekurapa inoburitsa organic tsvina gasi (yakanzi mazana eanoputika organic compounds, zvichiteerana ndeye alkane, alkanes, olefin, anonhuwirira makomisheni, doro, aldehyde, ketoni, ester, ester).
2. Kwakabva uye hunhu hwemotokari yekunamira exhaust gasi
Mota yependi workshop inofanirwa kuitisa pendi pre-kurapa, electrophoresis uye kupfapfaidza pendi pane workpiece. Pendi maitiro anosanganisira kupfapfaidza pendi, kuyerera uye kuomesa, mune aya maitiro anoburitsa organic tsvina gasi (VOCs) uye pfapfaidzo yekupfapfaidza, saka maitiro aya anoda kupfapfaidza pendi mukamuri marara gasi kurapwa.
(1) Kurasa gasi kubva mukamuri yependi yekupfapfaidza
Kuti uchengetedze nzvimbo yekushanda yekupfapfaidza, maererano nezvinodiwa zveLabour Safety and Health Law, mhepo inofanira kuchinjwa nguva dzose muimba yekuputira, uye kukurumidza kuchinja kwemhepo kunofanira kudzorwa mukati mehuwandu hwe (0.25 ~ 1) m / s. Chimiro chikuru chemhepo inopedza gasi ndiyo organic solvent yependi yekupfapfaidza, zvikamu zvayo zvikuru zvinonhuhwirira hydrocarbons (matatu benzene uye asiri-methane yakazara hydrocarbon), doro ether, ester organic solvent, nekuti huwandu hwekubuda hwekamuri yekupfapfaidza hwakakura kwazvo, saka huwandu hwese hwegasi remarara raburitswa rakaderera kwazvo, kazhinji rinenge 100 mg/mm. Uye zvakare, kupera kwekamuri yependi kazhinji kuine hushoma husina kunyatsogadziriswa pendi mhute, kunyanya yakaoma pendi yekupfapfaidza yekubata yekupfapfaidza kamuri, iyo pendi mhute mukupopota, inogona kuve chipingamupinyi chekurasa gasi kurapwa, marara gasi kurapwa kunofanira kunge kuri pretreatment.
(2) Gasi remarara kubva mukamuri yekuomesera
Pendi yechiso mushure mekupfapfaidza isati yaoma, inoda kuyerera mhepo, yakanyorova pendi firimu organic solvent mukuita kuomesa iyo inoputika, kuitira kudzivirira mhepo indoor organic solvent aggregation tsaona yekuputika, imba yemhepo inofanira kunge iine mhepo inoenderera, kushandura kumhanya kwemhepo kunowanzo kudzora kutenderedza 0.2 m / s, exhaust kuumbwa uye pendi mukamuri yekuputira haina kupeta kwependi, asi yekupfap kamuri, zvinoenderana nevhoriyamu yekubuda, kazhinji mukamuri yekupfapfaidza gasi yekupisa kanenge kaviri, inogona kusvika 300 mg/m3, kazhinji yakasanganiswa neinopfapfaidza kamuri yekupopota mushure mekurapwa kwepakati. Uye zvakare, kamuri yependi, pendi yependi yemvura inotenderera dziva inofanirwa kuburitsa yakafanana organic tsvina gasi.
(3)Dkurira gasi rinopedza simba
Kuumbwa kwegasi rekuomesa tsvina yakanyanya kuoma, kuwedzera kune organic solvent, chikamu cheplasticizer kana resin monomer uye zvimwe zvinhu zvinoputika, asi zvakare ine zvinopisa zvinopisa zvigadzirwa, reaction products. Electrophoretic primer uye solvent type topcoat drying ine exhaust gasi inobuda, asi kuumbwa kwayo uye musiyano wekutarisa wakakura.
※Ngozi dzekupfapfaidza pendi yekuburitsa gasi:
Zvinozivikanwa kubva pakuongorora kuti gasi remarara kubva mukamuri yekupfapfaidza, imba yekuomesera, pendi yekuvhenganisa kamuri uye yepamusoro pendi pendi yekuchenesa sewage room yakadzikira uye nekuyerera kukuru, uye zvikamu zvikuru zvezvinosvibisa zvinonhuhwirira hydrocarbons, doro ether uye ester organic solvents. Zvinoenderana ne "Comprehensive Emission Standard for Air Pollution", kuwanda kweaya gasi remarara kazhinji kuri mukati memuganho wekuburitsa. Kuti ukwanise kubata nechiyero chekuburitsa zvinodikanwa mune chiyero, mazhinji mafekitori emotokari anotora nzira yekukwira-yakakwirira emission. Kunyangwe iyi nzira inogona kusangana neazvino emission miyero, asi gasi remarara harina kucheneswa diluted emission, uye huwandu hwese hwekusvibisa gasi hunoburitswa nemutsetse wakakura wekuputira muviri hunogona kunge hwakakwira kusvika mazana ematani, izvo zvinokonzeresa kukuvadza kwakanyanya kumhepo.
Paint fog in the organic solvent —— benzene, toluene, xylene is a strong toxic solvent, inoshanda kumhepo mumusangano, vashandi mushure mekufema turakiti inhalation inogona kukonzera acute and chronic poisoning, kunyanya kukonzera kukuvadzwa kwepakati tsinga uye hematopoietic system, short-term inhalation high concentration (inopfuura 1500 mg/mplastic inhalation in vapor, kazhinji kacho inokonzeresa mupfunga weanemia, mupfunga weanemia weanemia , kazhinji kacho unokonzera kuderera kweanemia yeanemia). benzene vapor inogonawo kukonzera kurutsa, zviratidzo zvetsinga senge kuvhiringika.
※Kusarudzwa kwemarara gasi nzira yekurapa yekupfapfaidza pendi uye yekuputira:
Mukusarudza nzira dzekurapa organic, zvinotevera zvinhu zvinofanirwa kutariswa zvakajairika: mhando uye kusungirirwa kwezvinosvibisa organic, tembiricha yekubuda kwemhepo uye chiyero chekuyerera, chidimbu chemukati, uye chiyero chekutonga chinosvibisa chinoda kuwanikwa.
1Snamata pendi pane kamuri tembiricha kurapwa
Iyo gasi yekuburitsa kubva mukamuri yekupendi, imba yekuomesera, pendi yekusanganisa imba uye topcoat yekugezesa sewage kamuri ndiyo tembiricha yekupisa gasi rekudzika kwakadzika uye kuyerera kukuru, uye chimiro chikuru chezvinosvibisa chinonhuhwirira hydrocarbons, doro uye ether uye ester organic zvinonyungudutsa. Zvinoenderana neiyo GB16297 "Comprehensive Emission Standard for Air Pollution", kuwanda kweaya gasi remarara kazhinji kuri mukati memuganho wekuburitsa. Kuti ukwanise kubata nechiyero chekuburitsa zvinodikanwa mune chiyero, mazhinji mafekitori emotokari anotora nzira yekukwira-yakakwirira emission. Kunyangwe iyi nzira inogona kusangana neyazvino emission miyero, asi gasi remarara rakanyungudutswa kuburitsa pasina kurapwa, uye huwandu hwese hwegasi rinosvibisa rinoburitswa nehombe yekuvhara muviri mutsara hunogona kunge hwakakwira semazana ematani, izvo zvinokonzeresa zvakanyanya kukuvadza kumhepo.
Kuti uderedze zvakanyanya kubuda kwezvinosvibisa gasi, nzira dzinoverengeka dzekurapa gasi dzinogona kushandiswa pamwe chete pakurapa, asi mutengo wekupedza gasi kurapwa nemhepo yakakwira zvakanyanya. Parizvino, iyo nzira yekune dzimwe nyika yakakura ndeyekutanga kuisa pfungwa (neiyo adsorption-desorption vhiri kuisa huwandu hwese hwenguva dzinenge gumi neshanu), kuitira kudzikisa huwandu hwese hunofanirwa kurapwa, uyezve kushandisa nzira inoparadza kurapa iyo yakaomeswa tsvina gasi. Kune nzira dzakafanana muChina, yekutanga kushandisa adsorption nzira (activated kabhoni kana zeolite seye adsorbent) yekudzikamisa, kamuri tembiricha pfapfaidza pendi tsvina gasi adsorption, ine tembiricha yekupisa gasi desorption, yakaisa tsvina gasi uchishandisa catalytic combustion kana regenerative thermal combustion nzira yekurapa. Kudzika kwakadzika, yakajairika tembiricha pfapfaidza marara gasi biological kurapwa nzira iri kuvandudzwa, tekinoroji yepamba panguva ino haina kukura, asi inofanirwa kutarisisa. Kuti tinyatso kudzikisa kusvibiswa kweveruzhinji kwekuputira tsvina gasi, isu tinofanirwawo kugadzirisa dambudziko kubva kunobva, sekushandisa electrostatic rotary makapu uye dzimwe nzira dzekuvandudza chiyero chekushandiswa kwejasi, kugadzirwa kwemvura-yakadzika machira uye mamwe machira ekuchengetedza nharaunda.
2Dringing tsvina gasi kurapwa
Kuomesa marara gasi ndeyepakati uye yakakwira yekumisikidza yakanyanya tembiricha tsvina gasi, inokodzera kupisa nzira kurapwa. Iko kupisa kwemoto kune matatu anokosha parameters: nguva, tembiricha, kukanganisa, ndiko kuti, kupisa kwe 3T mamiriro. Kushanda kwemarara gasi kurapwa ndiko kwakaringana dhigirii rekuita kwekupisa uye zvinoenderana neiyo 3T mamiriro ekudzora maitiro ekupisa. RTO inogona kudzora tembiricha yekupisa (820 ~ 900 ℃) uye nguva yekugara (1.0 ~ 1.2s), uye ive nechokwadi chekuti kukanganiswa kunofanirwa (mhepo uye organic zvinhu zvakasanganiswa zvakakwana), kushanda kwekurapa kunosvika 99%, uye kupisa kwemarara kwakakwira, uye kushandiswa kwesimba rekushandisa kwakaderera. Mazhinji mafekitori emotokari eJapan muJapan neChina anowanzo shandisa RTO kubata gasi rekuomesa rekuomesa (primer, yepakati coating, top coat drying). Semuyenzaniso, Dongfeng Nissan mutakurwi motokari Huadu coating mutsara uchishandisa RTO nechepakati kurapwa kwekuputira kuomesa kupera gasi mhedzisiro yakanaka kwazvo, inosangana zvizere nezvinodiwa zvemitemo yekuburitsa. Nekudaro, nekuda kweiyo yakakwira-nguva yekudyara kweRTO tsvina gasi yekurapa gasi, haina mari yekurasa gasi kurapwa nemarara diki gasi kuyerera.
Kune iyo yakapedzwa yekugadzira coating mutsara, kana yakawedzera tsvina gasi yekurapa midziyo inodiwa, iyo inokonzeresa yekupisa system uye inodzoreredza thermal combustion system inogona kushandiswa. Iyo catalytic combustion system ine diki mari uye yakaderera combustion simba rekushandisa.
Kazhinji kutaura, kushandiswa kwe / platinamu sechinhu chinokonzeresa kunogona kuderedza tembiricha yeoxidizing yakawanda organic tsvina gasi kusvika pa315 ℃. Catalytic combustion system inogona kushandiswa kune yakajairwa kuomesa tsvina gasi kurapwa, kunyanya yakakodzera kuomesa magetsi uchishandisa magetsi ekudziya nguva, dambudziko riripo nderekudzivirira kutadza kwechepfu inokonzeresa. Kubva pane zvakaitika kune vamwe vashandisi, kune yakajairika pendi yekuomesa marara gasi, nekuwedzera tsvina gasi kusefa uye mamwe matanho, anogona kuve nechokwadi chekuti hupenyu hweiyo catalyst ndeye 3 ~ 5 makore; electrophoretic pendi kuomesa tsvina gasi iri nyore kukonzera catalyst poisoning, saka kurapwa kwe electrophoretic pendi kuomesa tsvina gasi kunofanirwa kungwarira kushandisa catalytic combustion. Mukuita kwemarara gasi kurapwa uye shanduko yeDongfeng yekutengeserana mota yemuviri yekuputira mutsara, iyo tsvina gasi ye electrophoretic primer kuomeswa inobatwa neRTO nzira, uye iyo tsvina gasi yekuomeswa kwependi yepamusoro inobatwa necatalytic combustion nzira, uye mhedzisiro yekushandisa yakanaka.
※Spray pendi yekuputira tsvina gasi kurapwa maitiro:
Kupfapfaidza indasitiri marara gasi kurapwa chirongwa chinonyanya kushandiswa kupfapfaidza pendi yekurasa gasi kurapwa, fenicha fekitori marara gasi kurapwa, michina yekugadzira indasitiri marara gasi kurapwa, guardrail fekitori marara gasi kurapwa, kugadzira mota uye mota 4S shopu yekupfapfaidza pendi mukamuri marara gasi kurapwa. Parizvino, kune nzira dzakasiyana-siyana dzekurapa, dzakadai se: condensation nzira, absorption nzira, kupisa nzira, catalytic nzira, adsorption nzira, biological nzira uye ion nzira.
1. Water spray method + activated carbon adsorption uye desorption + catalytic combustion
Kushandisa pfapfaidzo shongwe kubvisa mhute yependi uye inonyungudika mumvura, mushure meiyo yakaoma sefa, mune activated kabhoni adsorption mudziyo, senge activated kabhoni adsorption izere, wobva wabvisa (kubvisa nzira nemhepo inobvisa, kupisa kwemagetsi, nitrogen kubvisa), mushure mekubvisa gasi (concentration yakawedzera kakawanda) nekubvisa feni mumoto, combulytic mvura. mushure mekubuda.
2. Water spray + activated carbon adsorption uye desorption + condensation kudzoreredza nzira
Kushandisa pfapfaidzo shongwe kubvisa mhute yependi uye inonyungudika mumvura, mushure mekuoma sefa, mune activated kabhoni adsorption mudziyo, senge activated kabhoni adsorption izere, wozobvisa (kubvisa nzira nemhepo inobvisa, kupisa kwemagetsi, nitrogen kubvisa), mushure mekugadzirisa tsvina gasi adsorption concentration condensation, condensate kudzoreredzwa kweiyo organic matter. Iyi nzira inoshandiswa pakurapa gasi remarara nepamusoro-soro, kupisa kwakadzika uye kuderera kwemhepo. Asi iyi nzira yekudyara, kushandiswa kwesimba rakawanda, mutengo wekushandisa, kupfapfaidza pendi yekuburitsa gasi "three benzene" uye imwe epoust gasi kazhinji yakaderera kupfuura 300 mg/m3, yakaderera, mhepo yakakura (motokari yekugadzira pendi workshop mhepo yakawanda inodarika 100000), uye nekuti mota yekuputira inopedza organic, chechipiri solvent pol kuumbwa, zvakaoma kubudisa organic solvent pol. kuvhara mumarara gasi kurapwa kazhinji usashandise nzira iyi.
3. Waste gasi adsorption nzira
Kupfapfaidza pendi tsvina gasi kurapwa adsorption inogona kukamurwa kuita makemikari adsorption uye yepanyama adsorption, asi "matatu benzene" tsvina gasi kemikari kuita yakaderera, kazhinji usashandise kemikari kunyura. Iyo yemuviri inonwisa mvura inotora kushoma kushanduka, uye inotora zvikamu zvine hukama hwepamusoro hwekudziya, kutonhora uye kushandiswa zvakare pakuongorora kunyura kwesaturation. Iyi nzira inoshandiswa pakutamisa mhepo, tembiricha yakaderera, uye yakaderera. Iyo yekumisikidza yakaoma, iyo investimendi yakakura, sarudzo yekunyura mvura yakanyanya kuoma, kune maviri kusvibiswa.
4. Aactivated carbon adsorption + UV photocatalytic oxidation midziyo
(1): zvakananga kuburikidza neyakagadzirwa kabhoni yakananga adsorption ye organic gasi, kuti iwane kucheneswa mwero we95%, midziyo iri nyore, mari shoma shoma, kushanda kwakaringana, asi inoda kazhinji kutsiva iyo activated kabhoni, yakaderera kusanganiswa kwezvinosvibisa, hapana kupora.
5.Aactivated carbon adsorption + yakaderera-tembiricha plasma midziyo
Mushure me activated kabhoni adsorption kutanga, zvino ine yakaderera tembiricha plasma mudziyo kugadzira tsvina gasi, inobata mwero wekubuda kwegasi, ion nzira ndeye kushandisa plasma Plasma (ION plasma) kushatisa kwegasi remarara, kubvisa kunhuwa, kuuraya mabhakitiriya, mavhairasi, kuchenesa mhepo imhando yepamusoro-soro yepasirese kuenzanisa, inodaidzwa sainzi yezana ramakore rekutanga uye kunze kwenyika. Kiyi kune tekinoroji iri kuburikidza neiyo yakakwira voltage pulse medium block discharge nenzira yehuwandu hukuru hweiyo inoshanda ion okisijeni (plasma), iyo gasi activation, inoburitsa ese akasiyana anoshanda emahara radicals, akadai OH, HO2, O, etc., benzene, toluene, xylene, ammonia, alkane uye imwe organic tsvina gasi kushatisa uye zvimwe zvinokonzeresa, oxid uye chepfu kusvibiswa kwechipiri. Iyo tekinoroji ine maitiro ekushomeka kwesimba rekushandisa, nzvimbo diki, nyore kushanda uye kugadzirisa, uye inonyanya kukodzera kurapwa kweakasiyana echikamu magasi.
Brief summary:
Ikozvino kune marudzi mazhinji enzira dzekurapa pamusika, kuitira kuti tisangane nemitemo yenyika uye yemuno yekurapa, isu tinowanzo sarudza nzira dzakawanda dzekurapa dzakabatanidzwa kurapa gasi remarara, kusarudza zvinoenderana neyavo chaiyo nzira yekurapa kurapwa.
Nguva yekutumira: Zvita-28-2022
