Coking Industry VOCs Comprehensive Treatment Solution

I-Volatile organic compounds (VOCs) iyizandulela ezibalulekile zesizukulwane se-O3, futhi ezinye zezingxenye zazo zine-carcinogenicity eqinile. Eminyakeni yamuva, ukugxila kwe-O3 emoyeni ozungezile kubonise ukuthambekela kokukhula unyaka nonyaka, futhi inkinga yokungcoliswa kwe-O3 iye yanda kakhulu, ehlobene eduze nenani elikhulu lokukhishwa kwe-VOCs. Emithonjeni eminingi yokungcoliswa kwe-VOC, ukukhiqizwa kwe-coking kungenye yemithombo ebalulekile yokungcola. Enqubweni yokukhiqiza i-coking, inkinga yokukhishwa kwegesi yokukhipha i-VOC ivelele kakhulu, enemithombo eminingi yokukhipha, ukungcola okuningi kanye nobuthi obuphezulu, ukukhishwa okungahleliwe nezinye izici, ukungcoliswa okukhulu kwendawo yomoya. Ngenxa yokwelashwa kwe-coking VOCs gas waste, amabhizinisi afanelekile azame futhi ahlola, okuvame kakhulu "isiteji sokugeza ezintathu + ukumuncwa (ukususwa) okunamathiselwe" inqubo, ukugeza okuyizigaba ezintathu + inqubo ye-RTO, ukubekwa uphawu kwe-nitrogen + inqubo yokutakula ingcindezi engemihle, imfucuza yokubuyisela igesi ukuvutha komlilo nezinye izinqubo zokwelashwa. Ngokukhishwa kwe- "Volatile organic compounds Emission Control Standards for Industrial Enterprises", "Coking Chemical Industry Pollutant Emission Standards" nezinye izinqubomgomo, ukuphathwa kwe-VOCs kokupheka kuphuthuma kakhulu, ngokuya ngezici ze-VOC yokukhipha igesi ezinqubweni ezahlukene ukuze kwenziwe ukwelashwa okujulile, ukufeza izindinganiso ezizinzile nezizinzile kuyinkinga ephuthumayo yamabhizinisi.

Ukuhlaziywa kwemithombo eyinhloko yama-VOC embonini yokupheka

Ama-VOC embonini yokupheka ikakhulukazi avela ohlelweni lokubuyisela ukukhiqizwa kwamakhemikhali: umthombo oyinhloko wokungcola kwesigaba sesigubhu esibandayo yipayipi lokukhipha itiyela, i-ammonia namanye amathangi okugcina, ikakhulukazi akhiqiza i-benzo [a] pyrene, i-hydrogen cyanide, i-phenols, i-naphthol, i-non-methane isiyonke i-hydrocarbon, i-ammonia, i-hydrogen sulfide yomthombo we-hydrogen sulfide, njll. izinsiza zokuvuselela i-desulfurization kanye namapayipi okukhipha ithangi ngalinye lokugcina, ikakhulukazi i-ammonia ne-hydrogen sulfide. Imithombo eyinhloko yokungcoliswa kwengxenye ye-ammonium sulfide izinsiza zokomisa i-ammonium sulfide, izixazululo ze-ammonium sulfide, amathangi okugcina i-ammonia, njll., ikhiqiza ikakhulukazi izinhlayiya, i-ammonia, njll. Imithombo eyinhloko yokungcoliswa kwengxenye yokuwasha i-benzene eyi-crudefined, iyunithi yokucubungula uwoyela, iyunithi yokucubungula uwoyela ye-benzetar njll. ikakhulukazi ikhiqiza uchungechunge lwe-benzene ne-benzene, ama-hydrocarbon, njll. Lawa ma-VOC aphinde abe nezici ezinobuthi neziyingozi, ezivuthayo neziqhumane. Ngenxa yenqubo ende neyinkimbinkimbi yemboni yokupheka, izingxenye ze-VOC zihlukahlukene futhi kunzima ukuziqoqa nokuphatha. Ngokuvamile, ithangi lokugcina elinomoya omuhle kanye nokuqukethwe kwe-oxygen ephansi lamukela inqubo yebhalansi yokubuyisela ingcindezi embi;

Ngenxa yokuqukethwe kwe-oksijeni ephezulu, igesi ehlakazekayo ayikwazi ukungena ohlelweni lokubuyisela igesi, ngakho-ke iphathwa kakhulu inqubo yokuqoqwa kwe-dispersive kanye nokubuyela endaweni eyodwa ekushiseni kwe-coke oven noma okunye ukushiswa kwe-oxidation. Ukudluliswa kwamabanga amade kwegesi yemfucuza ye-VOC kunezinkinga ezifana nomfutho ophansi kanye ne-naphthol kugesi ewudoti kulula ukuyicwebezela futhi ivimbe ipayipi. Ngalesi sikhathi, kufanelekile ukwakha i-incinerator ehlukile.

Xinjieyuan Technology VOCs Treatment Comprehensive Solutions

Kuyo yonke inqubo yokupheka, ukuvuselelwa kokukhiqizwa kwamakhemikhali kuyinkundla yokusebenzela ekhiqiza ama-VOC amaningi, ikakhulukazi endaweni yokubuyisela ibucayi kakhulu, ngakho-ke ukuphathwa kwe-VOCs kwezitshalo zokubhaka kugxile kakhulu endaweni yokubuyisela. Kunemishini eminingi ehilelekile endaweni yokutakula, futhi igesi yokukhipha amathangi ahlukahlukene ixhumeke ngokuqondile emkhathini, okuholela ephunga elibi. I-ammonia, itiyela, i-naphthalene, i-phenol, i-cyanide, i-methane hydrocarbons nezinye izinto zizobalekela emkhathini, ikakhulukazi i-benzene, i-hydrogen sulfide nezinye izinto, kodwa futhi inobuthi obunamandla, ukungcoliswa kwemvelo, kuthinta kakhulu imvelo kanye nempilo yabasebenzi abazungezile. Xinjieyuan VOCs isixazululo olunzulu ukwelashwa, ngokusho coking ibhizinisi coking, ukuhlanzwa igesi kanye alulame ukukhiqizwa kwamakhemikhali, isitoreji umkhiqizo, phenol cyanide ukwelashwa kwamanzi angcolile izinqubo ezahlukene VOCs izici kanye nokukhishwa kwezindawo zihlukile, Inqubo yokwelashwa VOCs ekhishwa uhlelo ukukhiqiza amakhemikhali ihlukaniswe ibhalansi egcwele negative ingcindezi alulame, qeda igesi isitoreji, ukubuya kokushisa komoya-mpilo ukuhlangabezana ne-RTOmbucine ukugxila okuhlukene, izimo ezihlukahlukene zokusetshenziswa kwezixazululo ezijulile zokwelashwa ze-VOC.

Inqubo yebhalansi yokubuyisa ingcindezi engalungile (igesi yokukhipha i-oxygen ephansi)

Igesi eqoqwe enomoya omuhle, umoya-mpilo ophansi kanye nenani eliphakeme elingeziwe, njengengxenye yesigubhu esibandayo, ingxenye ye-benzene eluting kanye nengxenye yedepho kawoyela, iphathwa ngombhoshongo wokuwasha uwoyela endaweni ngayinye, bese ivalwa nge-nitrogen bese ibuyiselwa ohlelweni lwegesi ngaphansi kwengcindezi engalungile. Le nqubo idinga umphumela omuhle wokuvala ithangi, ukuze umoya ungabi lula ukungena endaweni yokucindezela okubi, ungalawula kangcono okuqukethwe kwe-oxygen yegesi.

Umgomo wokusebenza: Okokuqala, idivayisi yokuvala i-nitrogen evulekile nevaliwe ifakwa ethangini elivaliwe. Uma ithangi lingena liphuma ku-material, ivalve yokuvala i-nitrogen isetshenziselwa ukuhlinzeka nge-nitrogen nokukhipha i-nitrogen, futhi ingxenye yegesi yomsila ikhishwa ngegesi ye-nitrogen. Xhuma i-valve yokukhishwa kwethangi evaliwe ohlelweni lwe-negative pressure, faka isethi yedivayisi yokulawula umoya-mpilo we-micro negative negative phambi kwefeni, setha ingcindezi ethile, vele uncele igesi ekhishwa yilawa mathangi ohlelweni lwe-negative pressure, kodwa hhayi umoya-mpilo omningi ohlelweni lwe-negative pressure lapho umfutho wabalandeli ushintsha, ngaleyo ndlela ubangele izingozi zokuphepha.

Ubuchwepheshe bokuvalwa kwe-nitrogen busetshenziswa kakhulu ekuvaleni amathangi endaweni yokugcina amanzi. Inayitrojeni isetshenziselwa ukwengeza isikhala segesi ethangini lapho izinga loketshezi ethangini lehla noma izinga lokushisa lehla. Ngokugcwalisa ithangi nge-nitrogen ngaphezu kwezinga le-liquid, i-liquid medium ivinjelwa ukuthi igasification eqhubekayo futhi ukuphunyuka kwe-gasification okuphakathi kuyavinjelwa. Lapho izinga lokuphakela kwethangi likhuphuka noma izinga lokushisa likhuphuka, umfutho wegesi ethangini uyakhuphuka, ivalvu yokukhipha initrogen iyavuleka futhi i-nitrogen iyaphuma, ukuze kugcinwe ibhalansi yokucindezela ethangini. Ngemuva kokuthi ithangi lokugcina livalwe nge-nitrogen, linganciphisa ngempumelelo intuthu ephumayo ethangini. Isikhala segesi ethangini ngokuyinhloko siyingxube yegesi evuthayo ne-nitrogen, engeke yakhe ingxube yegesi eqhumayo. Ingathuthukisa ukuphepha kokukhiqizwa kwebhizinisi, inciphise imidiya enobuthi neyingozi endaweni yokusebenza, futhi ivikele ngempumelelo indawo ezungezile futhi igcine impilo engokomzimba nengqondo yabasebenzi. Ngesikhathi esifanayo, inani legesi ekhishwayo elethulwa ohlelweni lwegesi ngokwelashwa kokuvalwa kwe-nitrogen lincane kakhulu (inani eliphezulu lingaphansi kuka-1000m3), futhi ngeke lithinte kabi ipayipi lesistimu yegesi.

Ukugeleza kwenqubo

(1) Setha ukumunca kwepayipi ngaphambi kwedivayisi yokulawula umoya-mpilo we-micro negative negative njenge--100-200Pa, kanye nokudonsa kwembobo ekhipha ithangi njengo-0~-50Pa. Ngokobude bepayipi elisuka ethangini ukuya kudivayisi yokulawula umoya-mpilo we-micro negative negative phambi kwesiphephetha-moya, enobude obuhlukene bepayipi nokumelana okuhlukile, lungisa ukumunca kwembobo ekhipha ithangi njengenani elimisiwe elinedigri yokuvula yevalvu ethangini; (2) Idivayisi yokulawula umoya-mpilo we-micro negative negative ixhunywe kwipayipi le-blower reflux noma ipayipi elingaphambili labalandeli, futhi ukumuncwa kwedivayisi yokulawula umoya-mpilo ongemuhle encane kulungiswa kokuthi -1000~-5000Pa ngevalvu elawulayo; 3 ipayipi, futhi ukuphakama kophawu lwamanzi kuyashintsha ngokushintsha kokumunca. Igesi ekhishwayo etholiwe ingavele ibhodloze isivalo samanzi ukuze iqhube isistimu ye-vacuum, futhi igcine ukumuncwa kwepayipi legesi ekhiphayo eyingozi kungashintshi. Umhwamuko wamanzi othathwe yigesi uyafinyaniswa endaweni yokuvala ukuze ungene epayipini le-reflux bese ubuyela ohlelweni lokuvala amanzi. Omunye umhwamuko ulethwa igesi egesini, ngakho-ke kuyadingeka ukusebenzisa ipayipi lokuhlanganisa amanzi ukuze uqinisekise ukuphakama kophawu lwamanzi. Yonke le nqubo ayinakho ukukhishwa, akukho ukuvuza, iphephile futhi inokwethenjelwa, futhi ibona ngempela ukwelashwa okungekho kukhishwa kwegesi ekhishwa ngamakhemikhali. Ukumuncwa kwethangi ngalinye kusethelwe ku -100~0Pa, futhi ukumuncwa kwethangi ngalinye kusethwa ngokuya ngobude, izinga kanye nokumelana kwepayipi. Ithangi lifakwe nevalvu yokunikezela nge-nitrogen evulekile nevaliwe kanye nevalvu yokukhipha i-nitrogen, futhi isivinini sefeni silungiswa ngesilawuli sokuguqula imvamisa. Ukumunca kulungiswa ivalvu elawulayo endaweni ngayinye ukuze kuqinisekiswe ukuthi igesi ngeke ibaleke emkhathini, futhi ngesikhathi esifanayo, ingaqinisekisa ukuthi ukudonsa okwanele kugcinwa. Inqubo ikhetha imishini enezinga eliphezulu lokuzenzakalela, futhi isignali ixhunywe ohlelweni lokulawula oluphakathi lwegumbi eliphakathi lokulawula ukukhiqizwa kwamakhemikhali, eliqhutshwa ngabasebenzi begumbi lokulawula eliphakathi ngaphandle kokwengeza opharetha abengeziwe. Ukuze kuvinjwe ukuvaleka kwamapayipi, kufakwa ipayipi lokuhlanza isitimu epayipini lokuqoqa igesi ephumayo, futhi ukuhlanzwa kwesitimu kwenziwa njalo. S155gg

Izinzuzo zenqubo: Inqubo yokutakula ibhalansi ye-VOC yengcindezi engemihle ethuthukiswe i-Xinjieyuan Technology ayinayo indawo, izindleko eziphansi zokutshala izimali nokusebenza, ukwelashwa okuphelele, ukukhishwa kwe-zero, kanye ne-VOC ethole itiyela, i-ammonia ne-benzene ingashintshwa ibe eminye imikhiqizo ngemva kokusetshenziswa kabusha ngezinqubo ezifana nombhoshongo wokuwasha we-benzene, ukuthuthukisa izinga lokutholwa kanye nokuthuthukisa kakhulu izinzuzo zezomnotho zefekthri.

Uhlobo lokukhipha igesi ekhiphayo eyingozi ibuyisela inqubo yokuvutha (igesi ekhipha umoya-mpilo ephezulu)

Kule nqubo, ama-VOC akhipha igesi enokuqukethwe okuphezulu kwe-oksijeni kanye nenani eliphansi elingeziwe engxenyeni ye-desulfurization kanye nesigaba se-ammonium sulfide yethulwa ohlelweni olubi lwe-pressure ye-coke oven njengokusabalalisa komoya ukubamba iqhaza ekushisweni kwe-oven ye-coke kanye nezingxenye ze-VOCs zi-oxidized ngokuphelele futhi zibolile.

Isimiso sokusebenza: Igesi eqoqiwe enokuqukethwe komoyampilo okuphezulu kanye nenani eliphansi elingeziwe elingeziwe esigabeni sokubuyisela ukukhiqizwa kwamakhemikhali lingeniswa ekushisweni kwe-coke kuhhavini njengokusatshalaliswa komoya ngemva kombhoshongo wokugeza i-asidi, umbhoshongo wokuwasha we-alkali nombhoshongo wokuwasha amanzi, ukuze kufezwe inhloso ye-oxidation ephelele kanye nokubola kwama-VOC. Njengamanje, iningi lamabhizinisi okupheka afake i-coke oven flue gas desulfurization kanye ne-denitration device, le ngxenye ye-sulfur dioxide, i-nitrogen oxide izosuswa ku-desulfurization kanye nedivayisi ye-denitration, ingakwazi ukufeza ukukhishwa kwe-zero yokwelashwa kwe-VOCs. Ukuze kuqinisekiswe ukuphepha, umtshina wegesi ovuthayo uyamiswa ngaphambi kokuba igesi yokukhipha umoya ifakwe kuhhavini we-coke ukuze ivuthe, engakwazi ukuqapha ukuguqulwa kwezingxenye ezivuthayo neziqhumayo kugesi wokukhipha ngesikhathi sangempela futhi ithumele isignali ohlelweni lokulawula i-DCS. Lapho ukuhlushwa kwengxenye kufinyelela umkhawulo obekiwe, i-alamu ye-DCS futhi ivula ngokuzenzakalelayo i-valve yokusabalalisa umoya; Lapho ukugxiliswa kwengxenye kufinyelela umkhawulo ophezulu omisiwe, i-valve ezenzakalelayo kuhhavini ye-coke iyanqanyulwa ukuze kuqinisekiswe ukuphepha kokukhiqiza.

Izinzuzo zenqubo

(1) Nciphisa izindleko zokutshala izimali zokwakha ngokusebenzisa ihhavini le-coke langempela njengesisetshenziswa esivuthayo; (2) Izindleko eziphansi zokusebenza, ama-VOC egesi yokukhipha ngemuva kokuvutha amandla okushisa angaphinde asetshenziswe, anciphise ukusetshenziswa kwegesi, anciphise ingcindezi yokukhipha i-denitrification ye-SCR engemuva; (3) Ukuvikeleka okuphezulu, izinga eliphezulu le-automation, lingabona kungagadiwe; (4) I-nitrogen oxide ne-sulphur dioxide ekhiqizwa ngemva kokushiswa kwegesi yokukhipha ingasuswa ngokuqondile nge-coke oven flue gas desulfurization kanye nedivayisi yokuhlukanisa, ngaphandle kobubi bendlela evamile yokuvutha.

I-Rotary regenerative independent combustion process (RTO)

Indlela yokushiswa yinqubo yamanje yokuhlanzwa kwe-organic waste gas (VOCs) inqubo ejulile, iye yaqashelwa ngokugcwele yizimboni ezihlukahlukene. I-Regenerative Thermal Oxidizer (RTO), eyaziwa nangokuthi isishisi esivuselelayo. Ubuchwepheshe bohlobo lwendlela yokuvutha, isitoreji sokushisa, ukuhlanganiswa kwe-oxidation okushisayo kube obunye bobuchwepheshe bokuhlanza ama-VOC.

Umgomo wokusebenza: Sebenzisa amapayipi kanye nezifeni ezisalungiswa eziyenga ukuqoqa igesi ekhipha umoya ephumayo eseduze, futhi igesi ekhipha umoya yenqubo ngayinye ihlukaniswa ukuze iwashwe futhi ishaywe kusengaphambili. I-NH3 ku-exhaust gas igezwa uketshezi olumunca embhoshongweni wokukha futhi isabela ne-H2SO4 oketshezini lokumuncwa, futhi uketshezi olumunca embhoshongweni wokukha lukhishelwa ethangini likamama lotshwala lesigaba se-ammonium sulfide. Embhoshongweni wokuwasha we-alkali, isixazululo se-NaOH sisetshenziselwa ukumunca i-H2S, i-HCN namanye amagesi ane-asidi kugesi yokukhipha umoya, futhi uketshezi olumunca embhoshongweni wokuwasha we-alkali lukhishelwa ethangini lokucacisa elingumshini. Ngemva kokuba igesi engcolile yesigaba sokukhipha usawoti igeziwe, izinhlayiya zikasawoti egesi elingcolile ziyagezwa; I-exhaust gas iqoqwa epayipini elikhulu legesi ephumayo ngemva kokugeza, bese ithunyelwa kusihlukanisi se-gas-liquid nge-relay fan ukuze kuhlukaniswe uketshezi lwegesi. Ngemuva kochungechunge lokutholwa kokugxilisa ingqondo ku-inthanethi nokulawula ingcindezi/ukugeleza kunqubo, ifeni eyinhloko eyakhiwe ithunyelwa kumshini wokushisa ozimele we-rotary (RTO) ukuze uthole ukwelashwa kokuhlanza igesi, futhi ekugcineni kuzuzwe ukukhipha okungenangozi.

Izinzuzo zenqubo

(1) Isistimu yokwelapha igesi engcolile kanye nesistimu yokukhiqiza kuhhavini we-coke ayithinti enye nenye, ezizimele kanye nezindleko eziphansi zokusebenza, asikho isidingo sokudla igesi ye-coke kuhhavini; (2) Izinga lokuhlanzwa kwama-VOC ≥97%(kufika ku-99.5%), umthelela omncane kumfutho womoya wepayipi (±25Pa, ukusebenza okuzinzile), izinga eliphelele lokutakula ukushisa ≥95%; (3) Ungabi nomthelela emzimbeni we-coke oven, ukugwema umthelela wesikhathi eside wegesi yokukhipha igesi kuhhavini we-coke; (4) Inezinga eliphakeme lokuhlanzeka kwegesi yokukhipha umoya kunokushisa okubuyayo ukuze kuhlangatshezwane nezidingo eziphakeme zokukhipha umoya esikhathini esizayo; (5) Isistimu ye-RTO yohlobo lwe-valve ejikelezayo yakha izinyathelo zokuphepha ezingu-30, kusukela empandeni ukuze kuqedwe izingozi zokuphepha; (6) Izinga eliphakeme lokuzenzakalelayo, lonke uhlelo lungakwazi ukubona ukusebenza okuzenzakalelayo, lungagadiwe.

Icala lokwelapha le-VOC kuphrojekthi yokwelapha igesi yokukhiqiza amalahle

Indlela yokuqala yokwelapha igesi engcolile evela ku-desulfurization, i-ammonium sulfate kanye nezikhundla zokukhipha usawoti ezindaweni zokusebenzela zokukhiqiza amakhemikhali iwukuqoqa ngokufanayo bese ufaka umbhoshongo wokugeza i-asidi kanye nombhoshongo wokuwasha we-alkali ukuze ugezwe, bese uwuthumela kuhhavini we-coke ukuze uxutshwe futhi ushiswe. Uma kubhekwa isimo esishubile sokuvikelwa kwemvelo, inqubo yokwelapha yokuqala ibilokhu ingakwazi ukuhlangabezana nezidingo zokwelashwa okujulile kwe-VOC. S19joe

Ngemuva kokuboniswa kwezikhathi nophenyo, inkampani yethu yamukela umzila wenqubo ohlanganisiwe wokugeza okunezigaba eziningi + ukuhlukaniswa kwegesi-uketshezi + isitoreji sokushisa esijikelezayo sobuchwepheshe bokushisa obuzimele (RTO) ngesisekelo sokuzuza ngokugcwele okudala. I-exhaust gas yenqubo ngayinye iyagezwa futhi ifakwe ngaphambili ngokwezigaba. I-NH3 ku-exhaust gas igezwa uketshezi olumunca embhoshongweni wokukha futhi isabela ne-H2SO4 oketshezini lokumuncwa. Uketshezi olumunca embhoshongweni wokukha lukhishelwa ethangini likamama lotshwala lesigaba se-ammonium sulfide. Embhoshongweni wokuwasha we-alkali, isixazululo se-NaOH sisetshenziselwa ukumunca i-H2S, i-HCN namanye amagesi ane-asidi kugesi yokukhipha umoya, futhi uketshezi olumunca embhoshongweni wokuwasha we-alkali lukhishelwa ethangini lokucacisa elingumshini. Ngemva kokuba igesi engcolile yesigaba sokukhipha usawoti igeziwe, izinhlayiya zikasawoti egesi elingcolile ziyagezwa; I-exhaust gas iqoqwa epayipini elikhulu legesi ephumayo ngemva kokugeza, bese ithunyelwa kusihlukanisi se-gas-liquid nge-relay fan ukuze kuhlukaniswe uketshezi lwegesi. Ngemva kochungechunge lokutholwa kokugxilisa ingqondo ku-inthanethi nokulawula ingcindezi/ukugeleza kunqubo, ifeni eyinhloko eyakhiwe ithunyelwa kusishisi esizimele esijikelezayo sesitoreji sokushisa (RTO) ukuze uthole ukwelashwa kokuhlanza igesi. I-VOCs≤20mg/Nm3 (ingqikithi ye-hydrocarbon engeyona i-methane) ngemva kokuguqulwa; NOx≤35mg/Nm3; SO2≤15mg/Nm3; I-particle ≤10mg/Nm3; NH3≤5mg/Nm3; H2S≤0.5mg/Nm3; I-HCN≤0.5mg/Nm3, ihlangabezana ngokugcwele nezidingo ezifanele ze-Volatile Organic Matter Emission Control Standard for Industrial Enterprises, Pollutant Emission Standard for Coking Chemical Industry kanye nokukhishwa kwe-ultra-low kokungcola, futhi inezinzuzo zokusebenza kahle kokususa, izindleko eziphansi zokwakha nokusebenza, ukuphepha nokwethembeka.