1. Samar da manyan abubuwan da ake amfani da su na fenti mai sharar gas
Ana amfani da tsarin zane sosai a cikin injina, mota, kayan lantarki, kayan aikin gida, jiragen ruwa, kayan daki da sauran masana'antu.
Paint raw kayan -- fenti yana kunshe da maras kyau da maras kyau, wanda ba shi da kullun ciki har da kayan fim da kayan fim na karin kayan aiki, ana amfani da wakili na dilution don shafe fenti, don cimma manufar fenti mai laushi da kyau.
Tsarin fenti yana haifar da hazo na fenti da gurɓataccen iskar gas, fenti a ƙarƙashin aikin babban matsin lamba zuwa barbashi, lokacin fesa, wani ɓangaren fenti bai isa wurin feshin ba, yaduwa tare da iska don samar da hazo na fenti; Organic sharar gida gas daga volatilization na diluent, Organic sauran ƙarfi ba a haɗe zuwa Paint surface, da fenti da kuma curing tsari zai saki Organic sharar gida gas (daruruwa daruruwan maras tabbas Organic mahadi, bi da bi na alkane, alkanes, olefin, aromatic mahadi, barasa, aldehyde, ketones, ester, ether, da sauran mahadi).
2. Tushen da halaye na murfin mota shaye gas
Taron zanen mota ya kamata ya gudanar da aikin gyaran fenti, electrophoresis da fenti akan kayan aikin. Tsarin fenti ya haɗa da fentin fenti, kwarara da bushewa, a cikin waɗannan hanyoyin za su samar da iskar gas mai sharar gida (VOCs) da fesa feshin, don haka waɗannan hanyoyin suna buƙatar fesa maganin sharar gas ɗin fenti.
(1) Sharar da iskar gas daga dakin fenti
Don kula da yanayin aiki na spraying, bisa ga tanadi na Dokar Tsaro na Ma'aikata da Lafiya, ya kamata a canza iska ta ci gaba da canzawa a cikin dakin feshin, kuma ya kamata a sarrafa saurin canjin iska a cikin kewayon (0.25 ~ 1) m / s. Babban abun da ke ciki na iskar iskar gas shine kaushi na fenti na fenti, babban abubuwansa sune hydrocarbons aromatic (benzene uku da methane duka hydrocarbon), ether barasa, ester Organic sauran ƙarfi, saboda yawan shayewar ɗakin feshin yana da girma sosai, don haka jimlar yawan iskar gas ɗin da aka fitar yana da ƙasa sosai, yawanci kusan 100 mg / m3. Bugu da kari, sharar dakin fenti sau da yawa yana dauke da dan kadan na hazon fenti gaba daya wanda ba a kula da shi ba, musamman busashen fenti na feshin fenti, hazon fenti a cikin shaye-shaye, na iya zama cikas ga bata maganin iskar gas, sharar iskar gas dole ne ya zama pretreatment.
(2) Sharar gida daga dakin bushewa
Face fenti bayan spraying kafin bushewa, so ya kwarara iska, rigar fenti film Organic sauran ƙarfi a cikin aiwatar da bushewa maras tabbas, domin su hana iska na cikin gida Organic sauran ƙarfi tara fashewa hadarin, iska dakin ya kamata a ci gaba da iska, canja iska gudun gaba ɗaya iko a kusa da 0.2 m / s, shaye shaye abun da ke ciki da Paint dakin shaye abun da ke ciki, amma ba ya ƙunshi Paint hazo, da jimlar taro na Organic sharar gida a cikin sharar gida fiye da SPRAY dakin fiye da 2 gas feshi dakin fiye da sharar gida. sau, na iya kaiwa 300 mg/m3, yawanci gauraye da shaye-shaye dakin bayan jiyya na tsakiya. Bugu da kari, dakin fenti, farfajiyar fenti na najasa wurare dabam dabam ya kamata su fitar da iskar gas mai kama da haka.
(3)Diskar iskar gas
A abun da ke ciki na bushewa sharar gas ne mafi hadaddun, ban da Organic sauran ƙarfi, wani ɓangare na plasticizer ko guduro monomer da sauran maras tabbas aka gyara, amma kuma ya ƙunshi thermal bazuwar kayayyakin, dauki kayayyakin. Electrophoretic primer da sauran ƙarfi irin topcoat bushewa da shaye gas fitarwa, amma abun da ke ciki da kuma maida hankali bambanci ne babba.
※Hatsarin feshin iskar gas:
An sani daga binciken cewa sharar da iskar gas daga dakin feshi, bushewa dakin, fenti hadawa dakin da topface fenti najasa magani dakin ne low maida hankali da kuma babban kwarara, kuma babban sinadaran da gurbatawa ne aromatic hydrocarbons, barasa ethers da ester Organic kaushi. Bisa ga "Ƙa'idar Ƙimar Ƙimar Ƙimar iska don Gurɓatar Sama", yawan yawan iskar gas ɗin nan gabaɗaya yana cikin iyakar fitarwa. Domin tinkarar buƙatun ƙimar iskar hayaƙi a cikin ma'auni, yawancin masana'antun kera motoci suna amfani da hanyar fitar da hayaƙi mai tsayi. Ko da yake wannan hanya za ta iya cika ka'idojin fitar da hayaki na yanzu, amma iskar iskar gas ɗin da gaske ba a kula da shi ba, kuma jimillar gurɓataccen iskar gas ɗin da babban layin rufe jiki ke fitarwa zai iya kai ɗaruruwan ton, wanda ke haifar da mummunar illa ga yanayi.
Paint hazo a cikin kwayoyin kaushi - benzene, toluene, xylene ne mai karfi mai guba ƙarfi, aiki zuwa iska a cikin bitar, ma'aikata bayan numfashi numfashi na numfashi zai iya haifar da m da kuma na kullum guba, yafi haifar da lalacewa na tsakiya juyayi da hematopoietic tsarin, gajeren lokaci inhalation high maida hankali (fiye da 1500 MG / m3) na dogon lokaci inhalation high maida hankali (fiye da 1500 MG / m3) na benzene a plasteremia, sau da yawa maida hankali a can. tururin benzene kuma na iya haifar da amai, alamun jijiya kamar rudani.
※Zaɓin hanyar maganin sharar gas don fesa fenti da shafa:
A zabar hanyoyin magance kwayoyin halitta, ya kamata a yi la'akari da waɗannan abubuwan gabaɗaya: nau'in da tattarawar gurɓataccen ƙwayar cuta, yanayin shaye-shayen kwayoyin halitta da adadin kwararar ruwa, abubuwan da ke cikin ƙwayoyin cuta, da matakin sarrafa gurɓataccen gurɓataccen abu da ake buƙatar cimma.
1Saddu'a fenti a dakin da zazzabi magani
The shaye gas daga zanen dakin, bushewa dakin, fenti hadawa dakin da topcoat najasa magani dakin ne dakin zafin jiki shaye gas na low maida hankali da kuma babban kwarara, kuma babban abun da ke ciki na gurbatawa ne aromatic hydrocarbons, barasa da ethers da ester Organic kaushi. Dangane da GB16297 “Comprehensive Emission Standard for Air Pollution”, yawan iskar gas ɗin nan gabaɗaya yana cikin iyakacin fitarwa. Domin tinkarar buƙatun ƙimar iskar hayaƙi a cikin ma'auni, yawancin masana'antun kera motoci suna amfani da hanyar fitar da hayaƙi mai tsayi. Ko da yake wannan hanya za ta iya cika ka'idojin fitar da hayaki na yanzu, amma iskar iskar gas ɗin da gaske tana cikin diluted ba tare da magani ba, kuma jimilar gurɓataccen iskar gas ɗin da babban layin da ke shafan jiki zai iya kaiwa ga ɗaruruwan ton, wanda ke haifar da mummunan lahani ga yanayi.
Domin da gaske rage fitar da hayaki iskar gas, da yawa shaye gas hanyoyin magani za a iya a hade domin jiyya, amma farashin shaye gas magani tare da high iska yana da yawa sosai. A halin yanzu, mafi balagagge hanya na kasashen waje shi ne da farko mayar da hankali (tare da adsorption-desorption dabaran mayar da hankali ga jimlar adadin kusan sau 15), domin a rage jimillar adadin da za a yi magani, sa'an nan a yi amfani da halakar da hanyar da za a bi da tabarbarewar iskar gas. Akwai irin wannan hanyoyin a kasar Sin, na farko amfani da adsorption Hanyar (kunna carbon ko zeolite a matsayin adsorbent) ga low maida hankali, dakin zafin jiki fesa fenti sharar gas adsorption, tare da high zafin jiki na gas desorption, mayar da hankali gas gas ta amfani da catalytic konewa ko regenerative thermal konewa hanya don magani. Low maida hankali, al'ada zafin jiki fenti fenti sharar gas na nazarin halittu Hanyar magani ana ɓullo da, da gida fasahar a halin yanzu mataki ba balagagge, amma ya kamata a kula da. Domin da gaske rage gurɓatar da jama'a na shafa iskar gas, muna kuma bukatar a warware matsalar daga tushen, kamar yin amfani da electrostatic rotary kofuna da sauran hanyoyin da za a inganta da amfani kudi na coatings, da ci gaban da ruwa-tushen coatings da sauran kare muhalli coatings.
2Dshan iskar gas magani
Bushewar iskar gas tana cikin matsakaici da babban taro na iskar gas mai zafi mai zafi, wanda ya dace da hanyar konewa magani. Halin konewa yana da mahimmanci guda uku: lokaci, zazzabi, damuwa, wato, konewa na yanayin 3T. Ingancin jiyya na iskar gas shine ainihin madaidaicin matakin konewa kuma ya dogara da yanayin yanayin 3T na sarrafa konewa. RTO iya sarrafa konewa zafin jiki (820 ~ 900 ℃) da kuma lokacin zama (1.0 ~ 1.2s), da kuma tabbatar da cewa zama dole tashin hankali (iska da kwayoyin halitta ne cikakken gauraye), da magani yadda ya dace ne har zuwa 99%, da sharar gida kudi ne high, da kuma aiki makamashi amfani ne low. Yawancin masana'antar kera motoci na Japan a Japan da China yawanci suna amfani da RTO don kula da iskar gas na bushewa (firi, matsakaici, bushewar gashi). Misali, Dongfeng Nissan fasinja mota Huadu shafi line yin amfani da RTO Karkasa jiyya na shafi bushewa shaye gas sakamako ne mai kyau sosai, cika da bukatun na watsi da dokokin. Koyaya, saboda babban saka hannun jari na sau ɗaya na kayan aikin gyaran iskar gas na RTO, ba tattalin arziƙi bane don maganin iskar gas ɗin da ba shi da ƙaranci.
Don layin samar da suturar da aka kammala, lokacin da ake buƙatar ƙarin kayan aikin jiyya na sharar gida, ana iya amfani da tsarin konewa na catalytic da tsarin konewar thermal mai haɓakawa. Tsarin konewa na catalytic yana da ƙananan saka hannun jari da ƙarancin kuzarin konewa.
Gabaɗaya magana, amfani da / platinum a matsayin mai haɓakawa na iya rage yawan zafin jiki na iskar gas mai sharar gida zuwa kusan 315 ℃. Ana iya amfani da tsarin konewa na catalytic don maganin iskar gas na bushewa gabaɗaya, musamman dacewa da isar da wutar lantarki ta amfani da lokutan dumama wutar lantarki, matsalar da ke akwai ita ce yadda za a guje wa gazawar guba mai kuzari. Daga gwaninta na wasu masu amfani, don babban fenti na bushewa gas mai sharar gida, ta hanyar ƙara yawan iskar gas da sauran matakan, zai iya tabbatar da cewa rayuwar mai kara kuzari shine shekaru 3 ~ 5; Electrophoretic Paint bushewa sharar gida abu ne mai sauki don haifar da kara kuzari guba, don haka magani electrophoretic Paint bushewa sharar gas ya kamata a yi hankali ta amfani da catalytic konewa. A cikin aiwatar da sharar gas jiyya da canji na Dongfeng kasuwanci abin hawa jiki shafi line, da sharar gida gas na electrophoretic primer bushewa ana bi da ta hanyar RTO, da kuma sharar gida gas na saman fenti bushewa ana bi da catalytic konewa Hanyar, da kuma amfani sakamako ne mai kyau.
※Fenti fenti sharar gas magani tsari:
Spraying masana'antu sharar gas magani makirci ne yafi amfani ga fesa zanen dakin sharar gas magani, furniture factory sharar gas magani, inji masana'antu masana'antu sharar gas magani, guardrail factory sharar gas magani, mota masana'antu da mota 4S shagon fesa fenti dakin sharar gas magani. A halin yanzu, akwai nau'o'in hanyoyin magani, kamar: hanyar kwantar da hankali, hanyar sha, hanyar konewa, hanyar catalytic, hanyar tallatawa, hanyar nazarin halittu da hanyar ion.
1. Water spray Hanyar + kunna carbon adsorption da desorption + catalytic konewa
Yin amfani da hasumiya don cire hazo mai fenti da mai narkewa a cikin kayan ruwa, bayan busassun tacewa, a cikin na'urar tallan carbon da aka kunna, kamar kunna carbon adsorption cike, sannan cirewa (hanyar tsigewa tare da tsiri tururi, dumama lantarki, tsiri nitrogen), bayan iskar gas (hanzari ya karu sau da yawa) ta hanyar tsiri fan a cikin na'urar konewa mai haɗari, carbon dioxide da konewa.
2. Water spray + kunna carbon adsorption da desorption + hanyar dawo da tari
Yin amfani da hasumiya don cire hazo na fenti da mai narkewa a cikin kayan ruwa, bayan busassun tace, a cikin na'urar adsorption na carbon da aka kunna, kamar kunna carbon adsorption cike, sannan zuwa tsiri (hanyar tsigewa tare da tsiri tururi, dumama lantarki, tsiri nitrogen), bayan sarrafa iskar gas adsorption maida hankali, condensate ta hanyar rabuwa dawo da abubuwa masu mahimmanci. Ana amfani da wannan hanyar don maganin sharar gida tare da babban taro, ƙananan zafin jiki da ƙananan iska. Amma wannan hanyar zuba jarurruka, babban amfani da makamashi, farashin aiki, fesa fenti mai shaye gas "uku benzene" da sauran yawan iskar gas gabaɗaya shine ƙasa da 300 MG / m3, ƙarancin maida hankali, babban girman iska (kera masana'antar fenti ɗin bitar iska sau da yawa a sama da 100000), kuma saboda murfin mota yana shayewar abubuwan da ke tattare da abubuwan da ke tattare da shi, sake yin amfani da sauran ƙarfi yana da wahala a yi amfani da shi, kuma mai sauƙin samar da iskar gas gabaɗaya a cikin sharar gida.
3. Waste gas adsorption hanyar
Fesa fenti sharar gas adsorption za a iya raba sinadarai adsorption da kuma jiki adsorption, amma "benzene uku" sharar gas sinadaran aiki ne low, kullum ba amfani da sinadaran sha. Ruwan sha na jiki yana ɗaukar ƙasa da rashin ƙarfi, kuma yana ɗaukar abubuwan da ke da alaƙa mai girma don dumama, sanyaya da sake amfani da su don nazarin shayarwar jikewa. Ana amfani da wannan hanyar don ƙaurawar iska, ƙarancin zafin jiki, da ƙarancin maida hankali. Shigarwa yana da rikitarwa, saka hannun jari yana da yawa, zaɓin ruwan sha ya fi wahala, akwai gurɓataccen gurɓataccen abu guda biyu
4. Akunna carbon adsorption + UV photocatalytic hadawan abu da iskar shaka kayan aiki
(1): kai tsaye ta hanyar kunna carbon kai tsaye adsorption na Organic gas, don cimma tsarkakewa kudi na 95%, sauki kayan aiki, kananan zuba jari, dace aiki, amma bukatar sau da yawa maye gurbin da kunna carbon, low taro na gurbatawa, babu maida.
5.Akunna carbon adsorption + kayan aikin plasma ƙarancin zafin jiki
Bayan kunna carbon adsorption da farko, sa'an nan tare da low zafin jiki kayan aikin plasma sarrafa sharar gida, za a bi da misali na iskar gas, ion Hanyar ne a yi amfani da plasma Plasma (ION plasma) lalata kwayoyin sharar gas, cire wari, kashe kwayoyin cuta, ƙwayoyin cuta, tsarkake iska wani high-tech kasa da kasa kwatanta, masana a gida da waje ana kiransu daya daga cikin hudu manyan hudu fasahar kimiyyar muhalli a karni na 21st. Makullin fasahar shine ta hanyar babban ƙarfin ƙarfin bugun jini matsakaici toshe fitarwa a cikin nau'in babban adadin aiki na oxygen (plasma), kunnawar iskar gas, samar da duk nau'ikan radicals masu aiki iri-iri, kamar OH, HO2, O, da sauransu, benzene, toluene, xylene, ammonia, alkane da sauran kwayoyin sharar iskar gas, lalatawar iskar oxygen da sauran abubuwan da ba su da hadaddun abubuwa masu guba, abubuwan da ke haifar da iskar oxygen da sauran abubuwan da ba su da hadaddun iskar sharar iskar gas, iskar oxygen da sauran abubuwan da ke haifar da sinadarai. gurbacewa. Fasahar tana da halaye na ƙarancin ƙarancin kuzari, ƙaramin sarari, aiki mai sauƙi da kiyayewa, kuma ya dace musamman don kula da iskar gas daban-daban.
Btaƙaitaccen bayani:
Yanzu akwai nau'ikan hanyoyin magani da yawa a kasuwa, don biyan ka'idodin magani na ƙasa da na gida, yawanci za mu zaɓi hanyoyin jiyya da yawa waɗanda aka haɗa don maganin iskar gas, don zaɓar daidai da ainihin tsarin jiyya nasu.
Lokacin aikawa: Dec-28-2022
