Coking Industry VOCs Comprehensive Treatment Treatment Solutions
Volatile organic compounds (VOCs) ke li-precursor tsa bohlokoa tsa moloko oa O3, 'me tse ling tsa likarolo tsa tsona li na le matla a kankere. Lilemong tsa morao tjena, mahloriso a O3 moeeng o pota-potileng lefats'e a bontšitse mokhoa oa ho eketseha selemo le selemo, 'me bothata ba tšilafalo ea O3 bo ntse bo eketseha, bo amanang haholo le palo e kholo ea tlhahiso ea VOCs. Mehloling e mengata ea tšilafalo ea VOCs, tlhahiso ea coking ke o mong oa mehloli ea bohlokoa ea tšilafalo. Ts'ebetsong ea tlhahiso ea ho pheha, bothata ba ho ntša likhase tsa VOCs bo hlahella haholoanyane, bo nang le mehloli e mengata ea ho tsoa, litšila tse ngata le chefo e phahameng, tlhahiso e sa hlophisehang le litšobotsi tse ling, tšilafalo e tebileng ho tikoloho ea sepakapaka. Ka lebaka la kalafo ea coking VOCs litšila khase, likhoebo tse amehang ba lekile le ho hlahlobisisa, tse atileng haholo ke "methati e meraro ea ho hlatsoa + ho monya (ho tlosoa) ho khomaretsoe" ts'ebetso, mekhahlelo e meraro ea ho hlatsoa + RTO ts'ebetso, ho tiisa naetrojene + ts'ebetso e mpe ea ho khutlisa khatello, ho chesa khase ea litšila le lits'ebetso tse ling tsa kalafo. Ka tokollo ea "Volatile organic compounds Emission Control Standards for Industrial Enterprises", "Coking Chemical Industry Pollutant Emission Standards" le maano a mang, taolo ea li-VOC tsa coking e potlakile haholo, ho latela litšoaneleho tsa VOCs ho ntša khase ka mekhoa e fapaneng ho etsa kalafo e tebileng, ho fihlela litekanyetso tse tsitsitseng le tse tsitsitseng ke bothata bo potlakileng ho likhoebo.
Tlhahlobo ea mehloli ea mantlha ea li-VOC indastering ea ho pheha
Li-VOC tsa indasteri ea ho pheha haholo-holo li tsoa ts'ebetsong ea ho hlaphoheloa ha tlhahiso ea lik'hemik'hale: mohloli o ka sehloohong oa tšilafalo ea karolo ea moropa o batang ke phala ea ho ntša tar, ammonia le litanka tse ling tsa polokelo, haholo-holo tse hlahisang benzo [a] pyrene, hydrogen cyanide, phenols, naphthol, non-methane total hydrocarbon, ammonia, hydrogen sulfide, joalo-joalo. lisebelisoa tsa tsosoloso ea desulfurization le liphaephe tse ntšang metsi tsa tanka e 'ngoe le e' ngoe ea polokelo, e leng haholo-holo ammonia le hydrogen sulfide. Mehloli e meholo ea tšilafalo ea karolo ea ammonium sulfide ke lisebelisoa tsa ho omisa tsa ammonium sulfide, tharollo ea ammonium sulfide, litanka tsa polokelo ea ammonia, joalo-joalo, haholo-holo tse hlahisang lintho tse itseng, ammonia, joalo-joalo. Mehloli e meholo ea tšilafalo ea karolo ea benzene ke crudefined benzene rectification unit, tank ea discharge ea benzene pipe le tse ling. haholo-holo e hlahisa letoto la benzene le benzene, hydrocarbons, joalo-joalo. Li-VOC tsena hape li na le chefo le libopeho tse kotsi, tse ka chang le tse ka qhomang. Ka lebaka la ts'ebetso e telele le e rarahaneng ea indasteri ea ho pheha, likarolo tsa VOC li fapane ebile ho thata ho li bokella le ho li laola. Hangata, tanka ea polokelo e nang le moea o motle le oksijene e fokolang e amohela mokhoa o fosahetseng oa ho hlaphoheloa ha khatello;
Ka lebaka la oksijene e ngata, khase e qhalakaneng ha e khone ho kena tsamaisong ea ho hlaphoheloa ha khase, kahoo e atisa ho phekoloa ke mokhoa oa ho bokella li-dispersive le ho khutlela bohareng ba ho chesoa ha coke oven kapa ho chesoa ha oxidation e 'ngoe. Phetiso ea nako e telele ea khase ea litšila ea VOCs e na le mathata a kang khatello e tlase le naphthol ka har'a khase e litšila ho bonolo ho kristale le ho thibela liphaephe. Ka nako ena, ho loketse ho haha secheso se arohaneng.
Xinjieyuan Technology VOCs Phekolo Comprehensive SolutionsTs'ebetsong eohle ea ho pheha, ho hlaphoheloa ha tlhahiso ea lik'hemik'hale ke workshop e hlahisang li-VOC tse ngata ka ho fetisisa, haholo-holo sebakeng sa ho hlaphoheloa ho tebile ho feta, kahoo tsamaiso ea VOC ea limela tsa ho pheha e tsepamisitsoe haholo-holo sebakeng sa ho hlaphoheloa. Ho na le lisebelisoa tse ngata tse amehang sebakeng sa ho hlaphoheloa, 'me khase ea ho qeta litanka tse sa tšoaneng e amana ka ho toba le sepakapaka, e leng se bakang monko o tebileng. Ammonia, tar, naphthalene, phenol, cyanide, methane hydrocarbons le lintho tse ling li tla phonyohela sepakapakeng, haholo-holo benzene, hydrogen sulfide le lintho tse ling, empa hape e na le chefo e matla, tšilafalo ea tikoloho, e ama tikoloho le bophelo bo botle ba basebetsi ba haufi. Xinjieyuan VOCs tharollo e akaretsang ea kalafo, ho latela khoebo ea coking coking, tlhoekiso ea khase le ho hlaphoheloa ha tlhahiso ea lik'hemik'hale, polokelo ea lihlahisoa, phenol cyanide kalafo ea metsi a litšila ea lits'ebetso tse fapaneng tsa litšoaneleho tsa VOCs le libaka tsa ho hlakoloa li fapane, Ts'ebetso ea kalafo ea VOCs e tsamaisoang ke sistimi ea tlhahiso ea lik'hemik'hale e arotsoe ka tekanyo e felletseng ea khatello e mpe ea ho hlaphoheloa, ho felloa ke matla ha khase, ho khutlisa mocheso oa oksijene ho kopana le theknoloji ea oksijene. tse fapaneng, maemo a fapaneng a ts'ebeliso ea litharollo tse tebileng tsa kalafo tsa VOC.
Ts'ebetso e felletseng ea khatello e mpe ea khatello ea mali (khase e tsoang ka tlase ea oksijene)Khase e bokelletsoeng e nang le moea o motle, oksijene e fokolang le boleng bo phahameng bo ekelitsoeng, joalo ka karolo ea moropa o batang, karolo ea benzene eluting le karolo ea depot ea oli, e tšoaroa ka tora ea ho hlatsoa oli sebakeng se seng le se seng, ebe e tiisoa ka nitrogen ebe e khutlisetsoa tsamaisong ea khase tlas'a khatello e mpe e felletseng. Ts'ebetso ena e hloka phello e ntle ea ho tiisa tanka, e le hore moea o se ke oa e-ba bonolo ho kena sebakeng sa khatello e mpe, o ka laola hantle boemo ba oksijene ea khase.
Molao-motheo oa ts'ebetso: Taba ea pele, sesebelisoa sa ho tiisa naetrojene se bulehileng le se koetsoeng se kentsoe tankeng e koetsoeng. Ha tanka e kena le ho tsoa ka har'a thepa, valve e koalang naetrojene e sebelisetsoa ho fana ka naetrojene le ho ntša naetrojene, 'me karolo ea khase ea mohatla e ntšoa ka khase ea naetrojene. Hokela valve e koetsoeng ea tanka ho sistimi e mpe ea khatello, kenya sesebelisoa sa taolo ea oksijene e nyane ka pel'a fan, beha khatello e itseng, feela u monye khase e tsoang ka tanka ho sistimi e mpe ea khatello, empa eseng oksijene e ngata haholo tsamaisong ea khatello e mpe ha khatello ea fan e fetoha, kahoo e baka likotsi tsa polokeho.
Theknoloji ea ho koala naetrojene e sebelisoa haholo-holo ho tiisoa ha litanka sebakeng sa polokelo. Nitrogen e sebelisoa ho tlatsetsa sebaka sa khase ka tanka ha boemo ba mokelikeli ka tanka bo theoha kapa mocheso o fokotseha. Ka ho tlatsa tanka ka naetrojene ka holim'a boemo ba mokelikeli, mokelikeli oa metsi o thibeloa ho tsoa ho gasification e tsoelang pele 'me ho phonyoha ha gasification e bohareng ho thibeloa. Ha tekanyo ea phepelo ea tanka e phahama kapa mocheso o phahama, khatello ea khase ka tanka ea phahama, valve ea ho ntša naetrojene ea buleha 'me naetrojene ea baleha, e le ho boloka tekanyo ea khatello ka tanka. Kamora hore tanka ea polokelo e koaloe ka naetrojene, e ka fokotsa ka mokhoa o atlehileng mosi oa tanka. Sebaka sa khase ka tanka haholo-holo ke motsoako oa khase e tukang le naetrojene, e ke keng ea theha motsoako oa khase e phatlohang. E ka ntlafatsa polokeho ea tlhahiso ea khoebo, ea fokotsa mecha ea litaba e chefo le e kotsi sebakeng sa ts'ebetso, 'me ea sireletsa tikoloho ka katleho le ho boloka bophelo bo botle ba' mele le ba kelello ba basebetsi. Ka nako e ts'oanang, palo ea khase ea mouoane e kentsoeng tsamaisong ea khase ka kalafo ea ho tiisa naetrojene e nyane haholo (chelete e phahameng e ka tlase ho 1000m3), 'me e ke ke ea ama phaephe ea tsamaiso ea khase hampe.
Phallo ea ts'ebetso
(1) Beha ho huloa ha phala ka pel'a sesebelisoa sa taolo ea oksijene e nyane e mpe e le -100-200Pa, le ho monya ha tanka e lokollang e le 0~-50Pa. Ho ea ka bolelele ba phaepe ho tloha tanka ho ea ho sesebelisoa sa taolo ea oksijene e mpe ka pel'a sefutho, se nang le bolelele bo fapaneng ba liphaephe le khanyetso e fapaneng, lokisa ho hula ha tanka e lokollang e le boleng bo behiloeng ka tekanyo ea ho bula ea valve holim'a tanka; (2) Sesebelisoa sa taolo ea oksijene ea khatello e nyane e hokahane le phaephe ea "blower reflux" kapa phala e ka pele ea fan, 'me ho huloa ha sesebelisoa sa taolo ea oksijene e nyane ho fetotsoe ho -1000 ~ -5000Pa ka valve e laolang; (3) Sebopeho se khethehileng sa ka hare sa sesebelisoa sa taolo ea oksijene se nang le khatello e fokolang se entsoe ka phala ea ho hula, khatello e fokotsang kamore ea tiiso ea metsi, tiiso ea metsi a khase, kamore ea vacuum, baffle, valve e laolang, pipe ea reflux, gauge ea vacuum, phaephe e phallang, phala ea metsi, joalo-joalo. phaephe, 'me bophahamo ba tiiso ea metsi bo fetoha ka phetoho ea ho hula. Khase e tsoang mosing e boeleng e ka phunyeletsa sekoaelo sa metsi ho etsa vacuum system, le ho boloka ho monya ha phaephe e kotsi ea khase e ntšang kotsi e sa fetohe. Mouoane oa metsi o nkoang ke khase o koaheloa ka har'a baffle ho kena phala ea reflux le ho khutlela tsamaisong ea tiiso ea metsi. Mouoane o mong oa metsi o kenngoa ka khase ka khase, kahoo hoa hlokahala ho sebelisa pipe ea tlatsetso ea metsi ho netefatsa bophahamo ba tiiso ea metsi. Ts'ebetso eohle ha e na mosi, ha e lutle, e bolokehile ebile e ka tšeptjoa, 'me e hlile e hlokomela phekolo ea khase ea mosi oa lik'hemik'hale. Ho hula ha tanka e 'ngoe le e' ngoe ho behiloe ho -100 ~ 0Pa, 'me ho hula ha tanka e' ngoe le e 'ngoe ho behiloe ho latela bolelele, boholo le ho hanyetsa ha pipeline. Tanka e kentsoe ka valve ea phepelo ea naetrojene e bulehileng le e koetsoeng le valve ea ho ntša naetrojene, 'me lebelo la fene le lokisoa ke selaoli sa phepelo ea maqhubu. Ho hula ho fetoloa ke valve e laolang sebakeng se seng le se seng ho etsa bonnete ba hore khase e ke ke ea phonyoha sepakapakeng, 'me ka nako e ts'oanang, e ka etsa bonnete ba hore ho ts'oaroa ho lekaneng ho bolokoa. Ts'ebetso e khetha lisebelisoa tse nang le tekanyo e phahameng ea boiketsetso, 'me pontšo e amana le tsamaiso e bohareng ea taolo ea kamore ea ho laola ea tlhahiso ea lik'hemik'hale, e sebelisoang ke basebetsi ba kamore ea ho laola bohareng ntle le ho eketsa basebetsi ba eketsehileng. E le ho thibela ho thibeloa ha liphaephe, phaephe ea ho hloekisa mouoane e kenngoa phapeng ea pokello ea khase ea mouoane, 'me ho hloekisa mouoane ho etsoa khafetsa.
Melemo ea ts'ebetso: The VOCs negative pressure balance recovery process e ntlafalitsoeng ke Xinjieyuan Technology ha e na sebaka sa mobu, matsete a tlase le litšenyehelo tsa ts'ebetso, kalafo e felletseng, mesimo ea zero, le VOC e khutlisitsoeng ka tar, ammonia le benzene e ka fetoloa lihlahisoa tse ling ka mor'a ho sebelisoa hape ka lits'ebetso tse kang tora ea ho hlatsoa benzene, ho ntlafatsa sekhahla sa ho hlaphoheloa le ho ntlafatsa haholo melemo ea moruo ea feme.
Mofuta oa ho lahla o kotsi oa ho chesa khase (khase ea ho ntša oksijene e ngata)Ts'ebetsong ena, li-VOCs li ntša khase e nang le oksijene e phahameng le boleng bo tlase bo ekelitsoeng karolong ea desulfurization le ammonium sulfide e kenngoa tsamaisong e mpe ea khatello ea ontong ea coke e le kabo ea moea ho kenya letsoho ho cheseng ha onto ea coke le likarolo tsa VOCs li na le oxidized ka botlalo le ho bola.
Molao-motheo oa ts'ebetso: Khase e bokelletsoeng e nang le oksijene e phahameng le boleng bo tlase bo ekelitsoeng karolong ea tlhahiso ea lik'hemik'hale e kenngoa mollong oa coke e le phepelo ea moea ka mor'a tora ea ho hlatsoa acid, tora ea ho hlatsoa alkali le tora ea ho hlatsoa metsi, e le ho fihlela sepheo sa oxidation e phethahetseng le ho bola ha VOCs. Hajoale, likhoebo tse ngata tsa ho pheha li kentse coke oven flue gas desulfurization le denitration device, karolo ena ea sulfur dioxide, nitrogen oxide e tla tlosoa ka sesebelisoa sa desulfurization le denitration, e ka finyella khase ea zero ea phekolo ea VOCs. E le ho netefatsa tšireletseho, mochine oa khase o tukang o thehoa pele khase ea ho tima e kenngoa ka ontong ea coke bakeng sa ho tuka, e ka shebellang phetoho ea likarolo tse tukang le tse phatlohang ka khase ea ho tima ka nako ea sebele le ho romela letšoao ho tsamaiso ea taolo ea DCS. Ha mahloriso a karolo a fihla moeling o behiloeng, lialamo tsa DCS 'me li bula valve ea kabo ea moea ka bo eona; Ha motsoako oa motsoako o fihla moeling o ka holimo o behiloeng, valve ea othomathike ka ontong ea coke e khaoloa ho netefatsa polokeho ea tlhahiso.
Melemo ea ts'ebetso(1) Fokotsa litšenyehelo tsa matsete a kaho ka ho sebelisa onto ea pele ea coke e le sesebelisoa se tukang; (2) Litsenyehelo tse tlaase tsa ts'ebetso, li-VOC ka khase ea ho qeta ka mor'a hore matla a mocheso a tukang a ka tsosolosoa, a fokotsa tšebeliso ea khase, a fokotsa khatello ea denitrification ea SCR ea morao-rao; (3) Tšireletseho e phahameng, tekanyo e phahameng ea boiketsetso, e ka hlokomela ntle le tlhokomelo; (4) Nitrogen oxide le sulfur dioxide e hlahisoang ka mor'a ho chesa khase e tukang e ka tlosoa ka ho toba ke coke oven flue gas desulfurization le sesebelisoa sa denitration, ntle le mefokolo ea mokhoa oa khale oa ho tuka.
Rotary regenerative independent combustion process (RTO)
Mokhoa oa ho chesa ke mokhoa oa hona joale oa tlhoekiso ea organic waste gas (VOCs) ts'ebetso e phethahetseng, e lemohuoe ka botlalo ke liindasteri tse fapaneng. Regenerative Thermal Oxidizer (RTO), eo hape e tsejoang e le secheso se nchafatsang. Theknoloji ke ea mofuta oa mokhoa oa ho tuka, ho boloka mocheso, ho kopanya mocheso oa oxidation ho e 'ngoe ea theknoloji ea tlhoekiso ea VOCs.
Molao-motheo oa ts'ebetso: Sebelisa liphaephe le li-fan tse susumetsang ho bokella khase e tsoang sebakeng se haufi le moo, 'me khase ea mosi oa tšebetso e' ngoe le e 'ngoe e khethiloe bakeng sa ho hlatsuoa le ho e lokisa esale pele. NH3 ka har'a khase ea mouoane e hlatsuoa ke mokelikeli o monyang ka har'a tora ea pickling 'me e kopana le H2SO4 ka har'a mokelikeli o monyang,' me mokelikeli o monyang o ka har'a tora ea monko o tšeloa ho tanka ea joala ea 'm'a ea karolo ea ammonium sulfide. Toreng ea ho hlatsoa alkali, tharollo ea NaOH e sebelisoa ho monya H2S, HCN le likhase tse ling tse nang le asiti ka har'a khase e tsoang, 'me mokelikeli o tsoang toreng ea ho hlatsoetsa ea alkali o tšeloa ka tankeng ea ho hlakisa e entsoeng ka mochini. Ka mor'a hore khase ea litšila ea karolo ea ho ntša letsoai e hlatsuoe, likaroloana tsa letsoai ka khase ea litšila lia hlatsuoa; Khase ea ho qeta e bokelloa ka har'a phala e kholo ea khase ka mor'a hore e hlatsoe, ebe e romelloa ho karohano ea khase-metsi ka fene e fetisang bakeng sa karohano ea metsi a khase. Kamora letoto la tlhahlobo ea mahloriso ea marang-rang le taolo ea khatello / phallo ts'ebetsong, mochini o ka sehloohong o kentsoeng oa ho romelloa o romelloa ho rotary heat storage independent burner (RTO) bakeng sa kalafo ea tlhoekiso ea khase, 'me qetellong e fihlelle ho tsoa ho se nang kotsi.
Melemo ea ts'ebetso
(1) tsamaiso ea litšila ea khase le tsamaiso ea tlhahiso ea coke ha e ame e mong le e mong, e ikemetseng le litšenyehelo tse tlaase tsa ts'ebetso, ha ho hlokahale ho ja khase ea coke ontong; (2) Sekhahla sa tlhoekiso ea VOCs ≥97% (ho fihla ho 99.5%), tšusumetso e nyane ho khatello ea moea ea liphaephe (± 25Pa, ts'ebetso e tsitsitseng), sekhahla se akaretsang sa ho khutlisa mocheso ≥95%; (3) U se ke ua ba le tšusumetso 'meleng oa ontong ea coke, ho qoba tšusumetso ea nako e telele ea khase ea ho qeta khase ka ontong ea coke; (4) E na le ts'ebetso e phahameng ea tlhoekiso ea khase ho feta ts'ebetso ea ho chesa ho fihlela litlhoko tse phahameng tsa mosi nakong e tlang; (5) Rotary valve mofuta oa RTO tsamaiso e theha mehato ea ts'ireletso ea 30, ho tloha motso ho felisa likotsi tsa tšireletso; (6) Boemo bo phahameng ba boits'oaro, sistimi eohle e ka tseba ts'ebetso e ikemetseng, e sa lebelloa.
Nyeoe ea kalafo ea VOCs morerong oa kalafo oa mashala oa tlhahiso ea mashala
Mokhoa oa pele oa kalafo oa khase ea litšila ho tloha desulfurization, ammonium sulfate le maemo a ho ntšoa ha letsoai lithupelong tsa tlhahiso ea lik'hemik'hale ke ho e bokella ka mokhoa o ts'oanang ebe o kenya tora ea ho hlatsoa acid le alkali bakeng sa ho hlatsoa, ebe o e romella ho coke ontong bakeng sa ho kopanya le ho tuka. Ka lebaka la boemo bo ntseng bo eketseha ba ts'ireletso ea tikoloho, ts'ebetso ea pele ea kalafo e ntse e sa khone ho fihlela litlhoko tsa kalafo e tebileng ea VOC.
Kamora nako ea lipontšo le lipatlisiso, k'hamphani ea rona e amohela mokhoa o kopaneng oa ho hlatsuoa ka mekhahlelo e mengata + karohano ea mokelikeli oa khase + polokelo ea mocheso ea rotary e ikemetseng ea ho chesa theknoloji (RTO) motheong oa ho etsa phaello e felletseng ea khale. Khase ea mouoane ea ts'ebetso e 'ngoe le e' ngoe e hlatsuoa ebe e hlophisoa esale pele ka lihlopha. NH3 ka har'a gase ea mouoane e hlatsuoa ke mokelikeli o monyang o ka har'a tora ea pickling 'me e kopana le H2SO4 mokelikeli o monyang. Mokelikeli o monyang o ka har'a tora ea ho kha o tšeloa ka tankeng ea 'm'e ea joala ea karolo ea ammonium sulfide. Toreng ea ho hlatsoa alkali, tharollo ea NaOH e sebelisoa ho monya H2S, HCN le likhase tse ling tse nang le asiti ka har'a khase e tsoang, 'me mokelikeli o tsoang toreng ea ho hlatsoetsa ea alkali o tšeloa ka tankeng ea ho hlakisa e entsoeng ka mochini. Ka mor'a hore khase ea litšila ea karolo ea ho ntša letsoai e hlatsuoe, likaroloana tsa letsoai ka khase ea litšila lia hlatsuoa; Khase ea ho qeta e bokelloa ka har'a phala e kholo ea khase ka mor'a hore e hlatsoe, ebe e romelloa ho karohano ea khase-metsi ka fene e fetisang bakeng sa karohano ea metsi a khase. Ka mor'a letoto la ho lemoha mahloriso a marang-rang le ho laola khatello / phallo ha ho ntse ho etsoa, mochine o ka sehloohong o susumelitsoeng ke ho romelloa ho rotary mocheso o ikemetseng oa ho chesa (RTO) bakeng sa phekolo ea ho hloekisa khase. VOCs≤20mg/Nm3 (non-methane total hydrocarbon) ka mor'a phetoho; NOx≤35mg/Nm3; SO2≤15mg/Nm3; Lintho tse nyenyane ≤10mg/Nm3; NH3≤5mg/Nm3; H2S≤0.5mg/Nm3; HCN≤0.5mg/Nm3, e kopana ka botlalo le litlhokahalo tse amehang tsa Tekanyetso ea Taolo ea Likhoebo tsa Mekhahlelo ea Likhoebo tsa Liindasteri, Pollutant Emission Standard bakeng sa Indasteri ea Lik'hemik'hale ea Coking le litšila tse silafatsang haholo, 'me e na le melemo ea ts'ebetso e phahameng ea ho tlosa, litšenyehelo tse tlase tsa kaho le ts'ebetso, polokeho le ts'epo.
