Iyini imishini yokwelapha igesi yemfucuza ye-styrene?

Iyini imishini yokwelapha igesi ye-styrene？

1.Uhlolojikelele lwegesi ye-styrene exhaust

I-styrene (ifomula yamakhemikhali: C8H8) iyinhlanganisela yemvelo eyakhiwe ngokufaka i-benzene esikhundleni se-athomu ye-hydrogen eyodwa ye-ethylene. I-styrene, eyaziwa nangokuthi i-vinylbenzene, iwuketshezi olunamafutha angenambala, oluvutha umlilo, olunobuthi, olungancibiliki emanzini, oluncibilika ku-ethanol, ether, oluvezwa emoyeni kancane kancane i-polymerization kanye ne-oxidation. I-styrene iwuketshezi lwesibili oluvuthayo olunokuminyana okuhlobene okungu-0.907, indawo ezenzakalelayo yokuvutha engu-490 degrees Celsius, kanye nephuzu elibilayo elingu-146 degrees Celsius. Izakhiwo ze-styrene zizinzile, izimboni zisetshenziswa kakhulu ekwenzeni irabha yokwenziwa, i-ion exchange resin, i-polyether resin, i-plasticizer namapulasitiki kanye nezinye izinto ezibalulekile.

1.Izingozi zegesi ye-styrene exhaust

I-styrene iyacasula futhi iyadakwa emehlweni kanye nomgudu wokuphefumula ophezulu. Ubuthi obunamandla obunomthamo omkhulu we-styrene bungacasula kakhulu amehlo kanye nolwelwesi lwamafinyila lomgudu wokuphefumula ongaphezulu, okuholela ebuhlungu beso, izinyembezi, ikhala eligelezayo, ukuthimula, umphimbo obuhlungu, ukukhwehlela nezinye izimpawu, okulandelwa ikhanda, isiyezi, isicanucanu, ukuhlanza. nokukhathala okuvamile. Ukungcoliswa kwamehlo ngoketshezi lwe-styrene kungabangela ukusha. Ubuthi obungapheli be-styrene bungabangela i-neurasthenic syndrome, ikhanda elibuhlungu, ukukhathala, isicanucanu, ukulahlekelwa ukudla, ukuvuvukala kwesisu, ukucindezeleka, i-amnesia, ukuthuthumela kweminwe nezinye izimpawu. I-styrene inomphumela ocasulayo emgudwini wokuphefumula, futhi ukuchayeka isikhathi eside kungabangela izinguquko ezivimbelayo zamaphaphu.

1. Imishini yokwelapha igesi ye-styrene

Okwemishini yokwelapha igesi yemfucuza ye-styrene, kukhona ikakhulukazi okokusebenza kwe-carbon adsorption esebenzayo, okokuhlanza i-ion, okokuvutha, njll.

(1) okokusebenza kwe-carbon adsorption ecushiwe

Imishini ye-carbon adsorption esebenzayo iwukusetshenziswa kakhulu kwe-adsorbent eqinile enezimbotshana (ikhabhoni esebenzayo, ijeli ye-silica, isisefo samangqamuzana, njll.) ukwelapha igesi yemfucuza yemvelo, ukuze izingxenye eziyingozi zikhangiswe ngokugcwele ngamandla esibopho samakhemikhali noma amandla adonsela phansi amangqamuzana, futhi adsorbed on. ubuso be-adsorbent, ukuze kuzuzwe inhloso yokuhlanza i-organic waste gas. Njengamanje, indlela ye-adsorption isetshenziswa kakhulu kumthamo womoya omkhulu, ukugxila okuphansi (≤800mg/m3), akukho lutho oluyizinhlayiya, akukho viscosity, izinga lokushisa eliphansi lokuhlushwa kwegesi ye-organic imfucuza.

Izinga lokuhlanzwa kwekhabhoni elicushiwe liphezulu (i-carbon adsorption ecushiwe ingafinyelela ku-65% -70%), ukusebenza okusebenzayo, okulula, ukutshalwa kwezimali okuphansi. Ngemuva kokugcwaliswa kwe-adsorption, kuyadingeka ukuthi kushintshwe ikhabhoni entsha ecushiwe, futhi ukushintshwa kwekhabhoni ecushiwe kudinga izindleko, kanye nekhabhoni egcwalisiwe eshintshiwe ecushiwe nayo idinga ukuthola ochwepheshe bokwelashwa kwemfucuza eyingozi, futhi izindleko zokusebenza ziphezulu.

Izinga lokuhlanzwa kwekhabhoni elicushiwe liphezulu (i-carbon adsorption ecushiwe ingafinyelela ku-65% -70%), ukusebenza okusebenzayo, okulula, ukutshalwa kwezimali okuphansi. Ngemuva kokugcwaliswa kwe-adsorption, kuyadingeka ukuthi kushintshwe ikhabhoni entsha ecushiwe, futhi ukushintshwa kwekhabhoni ecushiwe kudinga izindleko, kanye nekhabhoni egcwalisiwe eshintshiwe ecushiwe nayo idinga ukuthola ochwepheshe bokwelashwa kwemfucuza eyingozi, futhi izindleko zokusebenza ziphezulu.

I-adsorption ebonakalayo ikakhulukazi ivela ohlelweni lokususa ukungcola ezigabeni eziwuketshezi negesi ze-zeolite. Isakhiwo esinezimbotshana ze-zeolite sinikeza inani elikhulu lendawo ethile, ukuze kube lula kakhulu ukumunca nokuqoqa ukungcola. Ngenxa yokuhlangana kwama-molecule, inani elikhulu lama-molecule odongeni lwezimbotshana ze-zeolite lingakhiqiza amandla adonsela phansi aqinile, njengamandla kazibuthe, ukuze lihehe ukungcola okuphakathi nendawo ukuya endaweni.

Ngaphezu kokukhangiswa ngokomzimba, ukusabela kwamakhemikhali kuvame ukwenzeka ebusweni be-zeolite. Ingaphezulu liqukethe inani elincane lokubophezela amakhemikhali, uhlobo olusebenzayo lweqembu lomoya-mpilo ne-hydrogen, futhi lezi zindawo ezingaphezulu ziqukethe ama-ground oxides noma ama-complexes angasabela ngokwekhemikhali nezinto ezikhangisiwe, ukuze ahlangane nezinto ezikhangisiwe futhi ahlanganiselwe ngaphakathi nangaphezulu. kwe zeolite.

Ukukhethwa kwe-zeolite okunengqondo nokusebenzayo kungakhuphula umthamo we-adsorption wesigubhu futhi konge ukusetshenziswa kwamandla. Uma iqhathaniswa nezinye izinto ze-adsorption, inezinzuzo ezilandelayo:

Ukukhethwa kwe-adsorption okunamandla：

Usayizi wembotshana olinganayo, i-ionic adsorbent. Ingakhangiswa ngokukhetha ngokuya ngosayizi kanye ne-polarity ye-molecule.

Londoloza amandla e-desorption：

I-hydrophobic molecular sieve enesilinganiso esiphezulu se-Si/Al ayikhangisi ama-molecule amanzi emoyeni, inciphisa ukulahlekelwa ukushisa okubangelwa ukuhwamuka kwamanzi.

Umthamo we-adsorption onamandla：

Umthamo we-adsorption mkhulu, ukusebenza kahle kwe-adsorption yesiteji esisodwa kungafinyelela ku-90~98%, futhi umthamo we-adsorption usenamandla emazingeni okushisa aphezulu.

Ukumelana nokushisa okuphezulu nokungashi：

Inokuqina okuhle kokushisa, izinga lokushisa le-desorption lingu-180 ~ 220 ℃, futhi izinga lokushisa lokumelana nokushisa elisetshenziswayo lingafinyelela ku-350 ℃. I-Desorption iphelile futhi izinga lokuhlushwa lama-VOC liphezulu. Imojula ye-zeolite ingakwazi ukumelana nezinga lokushisa eliphakeme elingu-700 ℃, futhi ingenziwa kabusha ingaxhunyiwe ku-inthanethi ekushiseni okuphezulu.

(3)Imishini evuthayo

Izinto ezivuthayo zishisa ngokuphelele izinhlanganisela eziphilayo eziguquguqukayo ekushiseni okuphezulu kanye nomoya owanele ukubola ku-CO2 ne-H2O. Indlela yomlilo ilungele zonke izinhlobo zegesi yemfucuza ephilayo futhi ingahlukaniswa ibe imishini evuthayo eqondile, okokusebenza okushisayo okushisayo (I-I-RTO) kanye nemishini evuthayo ye-catalytic (RCO).

Igesi ekhipha umkhonyovu ephezulu ene-emission concentration engaphezu kuka-5000mg/m³ ivamise ukuphathwa ngezinto ezivuthayo eziqondile, ezishisa igesi ye-VOCs njengophethiloli, futhi izinga lokushisa lomlilo ngokuvamile lilawulwa ku-1100 ℃, ngokusebenza kahle kokwelashwa, okungafinyelela ku-95% -99%.

Imishini yokushisa eshisayo(RTO) ilungele ukucubungula ukugcwala kwegesi yokukhipha engu-1000-5000mg/m³, ukusetshenziswa kwemishini evuthayo eshisayo, ukugcwala kwama-VOC kugesi yokukhipha umoya kuphansi, isidingo sokusebenzisa amanye amafutha noma amagesi avuthayo, izinga lokushisa elidingwa imishini evuthayo eshisayo iphansi kunokuvutha okuqondile, cishe ku-540-820 ℃. Imishini yokushisa eshisayo yokwelapha ukusebenza kahle kokwelashwa kwegesi yemfucuza ye-VOC iphezulu, kodwa uma igesi yemfucuza ye-VOC iqukethe i-S, N nezinye izakhi, igesi yokukhipha umoya ekhiqizwa ngemva kokusha izoholela ekungcoleni kwesibili.

Ukwelashwa kwegesi yemfucuza yezinto eziphilayo ngezinto ezishisayo ezishisayo noma okokusebenza kwe-catalytic combuss kunezinga eliphezulu lokuhlanzwa, kodwa izindleko zayo zokutshala kanye nokusebenza ziphezulu kakhulu. Ngenxa yezindawo eziningi ezikhishwayo ezihlakazekile, kunzima ukuzuza ukuqoqwa okumaphakathi. Imishini eshisa izikhotha idinga amasethi amaningi futhi idinga unyawo olukhulu.Imishini evuthayo eshisayo ifaneleka kakhulu ukusebenza okuqhubekayo kwamahora angu-24 nokugxila okuphezulu nezimo zegesi yokukhipha umoya ezinzile, ayifanele izimo zomugqa wokukhiqiza ngezikhathi ezithile. Izindleko zokutshalwa kwezimali nezokusebenza zokuvutha kwe-catalytic ziphansi kunalezo zokushiswa okushisayo, kodwa ukusebenza kahle kokuhlanza nakho kuphansi. Kodwa-ke, i-catalyst yensimbi eyigugu kulula ukubangela ukwehluleka okunobuthi ngenxa yokungcola kwegesi yokukhipha (njenge-sulfide), futhi izindleko zokushintsha i-catalyst ziphezulu kakhulu. Ngesikhathi esifanayo, ukulawulwa kwezimo zokukhipha igesi exhaust kuqinile kakhulu, ngaphandle kwalokho kuzobangela ukuvinjelwa kwekamelo lokuvutha kwe-catalytic futhi kubangele izingozi zokuphepha.

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