Coking Industry VOCs Cikakken Magani Magani

Matsalolin kwayoyin halitta masu canzawa (VOCs) sune mahimman madogara na tsarar O3, kuma wasu abubuwan da aka gyara su suna da ƙaƙƙarfan cutar kansa. A cikin 'yan shekarun nan, adadin O3 a cikin iskar yanayi na duniya ya nuna yanayin karuwa a kowace shekara, kuma matsalar gurbataccen O3 ya zama sananne, wanda ke da alaƙa da yawa na VOCs. A yawancin hanyoyin gurɓatawa na VOCs, samar da coking yana ɗaya daga cikin mahimman hanyoyin gurɓataccen ruwa. A cikin aiwatar da samar da coking, matsalar fitar da iskar gas ta VOCs ta fi shahara, tare da maɓuɓɓuka masu yawa, gurɓataccen gurɓataccen abu da yawan guba, hayaƙin da ba a tsara shi ba da sauran halaye, mummunan gurɓata yanayi ga yanayin yanayi. Dangane da lura da coking VOCs sharar gida gas, dacewa Enterprises sun gwada da kuma bincike, da mafi na kowa ne "uku mataki wankewa + sha (cire) a haɗe" tsari, uku mataki wanka + RTO tsari, nitrogen sealing + korau matsa lamba dawo da tsari, sharar gida gas dawo konewa da sauran jiyya matakai. Tare da saki na "Volatile Organic mahadi watsi Control Standards for Industrial Enterprises", "Coking Chemical Industry Pollutant watsi Standards" da kuma sauran manufofin, coking VOCs management ne sosai gaggawa, bisa ga halaye na VOCs shaye gas a daban-daban matakai don gudanar da wani zurfin jiyya, don cimma ci da kuma barga nagartacce ne da gaggawa matsala ga Enterprises.

Binciken manyan tushen VOCs a cikin masana'antar coking

VOCs a cikin masana'antar coking galibi sun fito ne daga tsarin samar da sinadarai: babban tushen gurɓataccen ganga mai sanyi shine bututun kwalta, ammonia da sauran tankunan ajiya, galibi suna samar da benzo [a] pyrene, hydrogen cyanide, phenols, naphthol, waɗanda ba methane jimlar hydrocarbon, ammonia, hydrogen sulffuride, da dai sauransu sune manyan wuraren samar da ruwa. da kuma bututun fitar da kowane tankin ajiya, wadanda galibinsu ammonia da hydrogen sulfide ne. Babban gurbatawa kafofin na ammonium sulfide sashe ne ammonium sulfide bushewa wurare, ammonium sulfide mafita, ammonium ajiya tankuna, da dai sauransu, yafi samar da particulate kwayoyin halitta, ammonia, da dai sauransu Babban gurbatawa kafofin na benzene wanke sashe ne danyen benzene gyara naúrar, sallama bututu na kowane man tanki kwalta benzene benzene da dai sauransu producing main tank separator, da dai sauransu da benzene jerin, hydrocarbons, da dai sauransu. Waɗannan VOCs kuma suna da guba da cutarwa, flammable da fashe halaye. Saboda doguwar tsari mai rikitarwa na masana'antar coking, abubuwan VOCs sun bambanta kuma suna da wahalar tattarawa da sarrafawa. Yawancin lokaci, tankin ajiyar ajiya tare da kyakkyawan iska da ƙarancin oxygen yana ɗaukar tsarin ma'auni mai ma'ana mara kyau;

Saboda yawan iskar oxygen da yake da shi, iskar da ke tarwatsewa ba za ta iya shiga tsarin dawo da iskar gas ba, don haka galibi ana kula da shi ta hanyar tarwatsewar tattarawa da koma baya zuwa ga kona tanda na coke ko wasu ƙona iskar oxygen. Watsawa mai nisa na VOCs na iskar gas yana da matsaloli kamar ƙananan matsa lamba da naphthol a cikin iskar gas mai sauƙi yana da sauƙi don crystallize da toshe bututun. A wannan lokacin, ya dace a gina wani incinerator daban.

Xinjieyuan Technology VOCs Magance Cikakken Magani

A cikin duka tsarin aikin coking, farfadowar samar da sinadarai shine bitar da ke samar da mafi yawan VOCs, musamman a yankin farfadowa ya fi tsanani, don haka kula da VOCs na tsire-tsire masu tsire-tsire ya fi mayar da hankali a wurin farfadowa. Akwai kayan aiki da yawa da ke cikin yankin farfadowa, kuma iskar gas na tankuna daban-daban yana da alaƙa kai tsaye zuwa yanayin, yana haifar da wari mai tsanani. Ammoniya, kwalta, naphthalene, phenol, cyanide, methane hydrocarbons da sauran abubuwa zasu tsere zuwa cikin sararin samaniya, musamman benzene, hydrogen sulfide da sauran abubuwa, amma kuma yana da guba mai ƙarfi, gurɓataccen yanayi, yana tasiri sosai ga muhalli da lafiyar ma'aikatan da ke kewaye. Xinjieyuan VOCs m magani bayani, bisa ga coking sha'anin coking, iskar gas tsarkakewa da sinadarai dawo da, samfurin ajiya, phenol cyanide sharar gida magani na daban-daban matakai na VOCs halaye da fitarwa sites ne daban-daban, The VOCs magani tsari sallama ta hanyar sinadaran samar da tsarin ya kasu kashi cikakken korau matsa lamba dawo da ma'auni, shaye gas dawo konewa, RTO Rotary zafi aikace-aikace saduwa daban-daban oxygen abun ciki a cikin daban-daban ma'auni. al'amuran VOCs a cikin zurfin jiyya mafita.

Cikakken tsarin dawo da ma'auni mara kyau (ƙananan iskar iskar iskar oxygen)

Gas ɗin da aka tattara tare da iskar iska mai kyau, ƙarancin iskar oxygen da ƙima mai yawa, kamar sashin gandun sanyi, sashin benzene eluting da sashin ma'ajiyar mai, ana bi da shi ta hasumiya mai wanki a kowane yanki, sa'an nan kuma an rufe shi da nitrogen kuma ya koma cikin tsarin iskar gas a ƙarƙashin cikakken matsin lamba. Wannan tsari yana buƙatar sakamako mai kyau na hatimi na tanki, don haka iska ba ta da sauƙi don shiga yankin matsa lamba mara kyau, zai iya sarrafa abubuwan da ke cikin iskar oxygen mafi kyau.

Ƙa'idar aiki: Da fari dai, an shigar da buɗaɗɗen na'urar rufewar nitrogen a kan tankin da aka rufe. Lokacin da tankin yana ciki da waje daga cikin kayan, ana amfani da bawul ɗin rufewar nitrogen don samar da nitrogen da fitarwar nitrogen, kuma ana fitar da wani ɓangare na iskar wutsiya tare da iskar nitrogen. Haɗa bawul ɗin sakin tanki mai rufaffiyar zuwa tsarin matsa lamba mara kyau, shigar da saitin na'urar kula da iskar oxygen mara kyau a gaban fan, saita wani matsa lamba, kawai tsotse iskar gas ɗin da waɗannan tankuna ke fitarwa a cikin tsarin matsa lamba mara kyau, amma ba da yawa oxygen cikin tsarin matsa lamba mara kyau lokacin da matsa lamba fan ya canza, don haka haifar da haɗarin aminci.

Ana amfani da fasahar rufewar Nitrogen akan rufe tankunan da ke cikin wurin tafki. Ana amfani da Nitrogen don haɓaka sararin gas a cikin tanki lokacin da matakin ruwa a cikin tanki ya faɗi ko zafin jiki ya ragu. Ta hanyar cika tanki tare da nitrogen a sama da matakin ruwa, ana hana matsakaicin ruwa daga ci gaba da iskar gas kuma an hana matsakaicin tserewar iskar gas. Lokacin da matakin abinci na tanki ya tashi ko zafin jiki ya tashi, karfin iskar gas a cikin tanki ya tashi, bawul ɗin fitar da nitrogen ya buɗe kuma nitrogen ya tsere, don kiyaye ma'aunin ma'auni a cikin tanki. Bayan an rufe tankin ajiya da nitrogen, zai iya rage fitar da hayakin da ke cikin ta yadda ya kamata. Filin iskar gas da ke cikin tankin ya kasance cakuɗaɗɗen iskar gas mai ƙonewa da nitrogen, wanda ba zai haifar da cakudar gas mai fashewa ba. Zai iya inganta amincin samar da kamfani, rage watsa labarai masu guba da cutarwa a cikin sararin aiki, da kuma kare muhalli yadda ya kamata da kiyaye lafiyar jiki da tunani na ma'aikata. A lokaci guda kuma, adadin iskar gas da aka shigar a cikin tsarin iskar gas ta hanyar kula da rufewar nitrogen yana da ƙarancin gaske (matsakaicin adadin bai wuce 1000m3 ba), kuma ba zai yi illa ga bututun tsarin gas ba.

Tsari kwarara

(1) Saita tsotsa bututun a gaban na'urar kula da iskar oxygen mara kyau kamar -100-200Pa, da tsotsa tashar tashar fitarwa ta tanki kamar 0 ~ -50Pa. Dangane da tsawon bututun mai daga tanki zuwa na'urar kula da iskar oxygen ta micro korau a gaban mai busa, tare da tsayin bututu daban-daban da juriya daban-daban, daidaita tsotsa tashar tashar fitarwa ta tanki azaman ƙimar saita tare da digiri na buɗewa na bawul akan tanki; (2) The micro korau matsa lamba oxygen kula da na'urar an haɗa zuwa abin hurawa reflux bututu ko fan gaban bututu, da tsotsa na micro korau matsa lamba oxygen kula da na'urar da aka gyara a -1000 ~ -5000Pa ta hanyar regulating bawul; (3) The na musamman na ciki tsarin na micro korau matsa lamba oxygen kula da na'urar ne hada da tsotsa bututu, matsa lamba iyakance ruwa hatimi jam'iyya, gas ruwa hatimi, injin jam'iyya, baffle, regulating bawul, reflux bututu, injin ma'auni, ambaliya bututu, ruwa samar da bututu, da dai sauransu Karkashin mataki na korau matsa lamba, da iskar gas a cikin mashiga bututu karya ta hanyar ruwa hatimi da kuma shiga da bututu da bututu da sukudi a cikin ruwa hatimi, da kuma shiga cikin bututu da bututu da surar da bututun ruwa. canje-canje tare da canjin tsotsa. Gas ɗin da aka dawo da shi zai iya kawai keta hatimin ruwa don aiwatar da tsarin injin, kuma ya ci gaba da tsotsa bututun iskar gas mai cutarwa. Turin ruwa da iskar gas ɗin ya ɗauka yana murƙushewa a cikin baffle don shigar da bututun reflux kuma ya koma tsarin hatimin ruwa. Ana shigar da wasu tururin ruwa a cikin iskar gas, don haka ya zama dole a yi amfani da bututun ƙarin ruwa don tabbatar da tsayin hatimin ruwa. Gabaɗayan tsarin ba shi da hayaƙi, ba yayyowa, amintattu kuma abin dogaro, kuma da gaske ya gane sifiri jiyya na iskar iskar gas. An saita tsotsan kowane tanki zuwa -100 ~ 0Pa, kuma an saita tsotsa kowane tanki gwargwadon tsayi, caliber da juriya na bututun. An shigar da tanki tare da buɗaɗɗen buɗaɗɗen bawul ɗin samar da nitrogen da bawul ɗin fitarwa na nitrogen, kuma ana daidaita saurin fan ta hanyar mai sarrafa mitar. Ana daidaita tsotsa ta hanyar bawul mai daidaitawa a kowane wuri don tabbatar da cewa iskar gas ba zai tsere zuwa cikin yanayi ba, kuma a lokaci guda, yana iya tabbatar da cewa an kiyaye isasshen tsotsa. Tsarin yana zaɓar kayan aiki tare da babban digiri na atomatik, kuma siginar yana haɗawa da tsarin kulawa na tsakiya na tsakiya na cibiyar samar da sinadarai, wanda ma'aikatan ɗakin kulawa na tsakiya ke aiki ba tare da ƙara ƙarin masu aiki ba. Domin hana toshe bututun mai, ana sanya bututun tsaftace tururi a kan bututun da ake tara iskar gas, kuma ana gudanar da tsaftace tururi akai-akai. S155gg

Fa'idodin tsari: Tsarin dawo da ma'auni mara kyau na VOCs da fasahar Xinjieyuan ta haɓaka ba ta da yanki, ƙarancin saka hannun jari da tsadar aiki, cikakken jiyya, iskar gas, da VOC da aka gano kwalta, ammonia da benzene za a iya juya su zuwa wasu samfuran bayan an sake yin amfani da su ta hanyar matakai kamar hasumiya na benzene, haɓaka ƙimar farfadowa da inganta fa'idodin tattalin arziƙin masana'anta.

Nau'in fitarwa mai cutarwa shaye iskar gas dawo da tsarin konewa (high oxygen shaye gas)

A cikin wannan tsari, da VOCs iskar gas tare da mafi girma oxygen abun ciki da ƙananan kara darajar a cikin desulfurization sashe da ammonium sulfide sashe da aka gabatar a cikin mummunan matsa lamba tsarin na coke tanda a matsayin iska rarraba don shiga cikin konewa na coke tanda da VOCs aka gyara gaba daya oxidized da bazuwa.

Aiki manufa: The tattara gas tare da mafi girma oxygen abun ciki da ƙananan kara darajar a cikin sinadaran samar dawo da sashe an gabatar a cikin coke tanda konewa a matsayin iska rarraba bayan acid wanka hasumiya, alkali wanka hasumiya da ruwa wanka hasumiya, don cimma manufar sosai hadawan abu da iskar shaka da bazuwar na VOCs. A halin yanzu, mafi yawan coking Enterprises sun shigar da coke tanda flue gas desulfurization da denitration na'urar, wannan bangare na sulfur dioxide, nitrogen oxide za a cire a cikin desulfurization da denitration na'urar, iya m cimma sifili watsi da VOCs magani. Domin tabbatar da tsaro, an saita na'urar gano iskar gas mai ƙonewa kafin a shigar da iskar gas ɗin a cikin tanderun coke don konewa, wanda zai iya sa ido kan canjin abubuwan wuta da abubuwan fashewa a cikin iskar gas a ainihin lokacin kuma aika siginar zuwa tsarin kula da DCS. Lokacin da abun da ke ciki ya kai iyakar saita, DCS ƙararrawa kuma ta atomatik buɗe bawul ɗin rarraba iska; Lokacin da abun da ke ciki ya kai iyakar saiti na sama, ana yanke bawul ɗin atomatik a cikin tanda coke don tabbatar da amincin samarwa.

Fa'idodin tsari

(1) Rage farashin saka hannun jari ta hanyar amfani da tanda coke na asali azaman na'urar konewa; (2) Low kudin aiki, VOCs a cikin shaye gas bayan konewa zafi makamashi za a iya sake yin fa'ida, rage gas amfani, rage denitrification matsa lamba na baya-karshen SCR; (3) Babban tsaro, babban digiri na atomatik, na iya gane ba tare da kulawa ba; (4) Nitrogen oxide da sulfur dioxide da aka samar bayan konewar iskar gas za a iya cire su kai tsaye ta hanyar gurɓataccen iskar gas ɗin coke da na'urar cirewa, ba tare da rashin lahani na hanyar konewar gargajiya ba.

Tsarin konewa mai zaman kansa na Rotary (RTO)

Hanyar konewa ita ce tsarkakewar iskar gas na yau da kullun (VOCs) mafi cikakken tsari, masana'antu daban-daban sun gane su sosai. Regenerative Thermal Oxidizer (RTO), kuma aka sani da regenerative incinerator. Fasahar tana cikin nau'in hanyar konewa, ajiyar zafi, haɗakar iskar oxygen ta thermal zuwa ɗayan fasahar tsarkakewa ta VOCs.

Ƙa'idar aiki: Yi amfani da bututun bututu da jawo daftarin fanti don tattara iskar gas mai gudu kusa, kuma iskar gas ɗin kowane tsari an rarraba shi don wankewa da riga-kafi. NH3 a cikin iskar gas ɗin ana wanke shi da ruwa mai sha a cikin hasumiya mai ɗaukar nauyi kuma yana amsawa da H2SO4 a cikin ruwan sha, kuma ana fitar da ruwan sha a cikin hasumiya ta pickling zuwa tankin giya na ammonium sulfide na uwar. A cikin hasumiya ta alkali, ana amfani da maganin NaOH don shafe H2S, HCN da sauran iskar gas a cikin iskar gas, kuma ana fitar da ruwan sha a cikin hasumiya ta alkali a cikin tankin bayanin injin. Bayan an wanke sharar iskar gas na sashin hakar gishiri, ana wanke sassan gishiri a cikin iskar gas; Ana tattara iskar gas ɗin a cikin babban bututun iskar gas bayan an wanke, sannan a aika zuwa ga mai raba ruwan gas ta fan ɗin relay don rabuwa da ruwan gas. Bayan jerin gano tattara hankalin kan layi da kuma sarrafa matsi/gudanar ruwa a cikin tsari, ana aika babban daftarin da aka jawo zuwa ga rotary zafin ajiya mai zaman kansa mai ƙonawa (RTO) don maganin tsarkakewar iskar gas, kuma a ƙarshe cimma fitarwa mara lahani.

Fa'idodin tsari

(1) Tsarin kula da iskar gas da kuma tsarin samar da tanda na coke ba sa shafar juna, masu zaman kansu da juna da ƙananan farashin aiki, babu buƙatar cinye iskar coke tanda; (2) VOCs tsarkakewa kudi ≥97% (har zuwa 99.5%), karamin tasiri a kan bututun iska matsa lamba (± 25Pa, barga aiki), m zafi dawo da kudi ≥95%; (3) Kada ku yi tasiri a jikin tanda na coke, don kauce wa tasiri na dogon lokaci na dawowar iskar gas a kan tanda coke; (4) Yana da mafi girman ingancin tsarkakewar iskar gas fiye da dawo da konewa don saduwa da buƙatun fitar da hayaƙi a nan gaba; (5) Rotary valve nau'in RTO tsarin ya kafa matakan tsaro na 30, daga tushen don kawar da haɗari masu haɗari; (6) Babban digiri na atomatik, duk tsarin zai iya gane aiki ta atomatik, ba tare da kulawa ba.

Batun jiyya na VOCs a cikin aikin samar da kwal bita aikin kula da iskar gas

Ainihin hanyar maganin sharar iskar gas daga desulfurization, ammonium sulfate da wuraren hako gishiri a cikin wuraren samar da sinadarai shine a tattara shi daidai gwargwado sannan a shigar da hasumiya mai wanke acid da hasumiya na alkali don wankewa, sannan a aika a cikin tanda na coke don hadawa da konewa. Dangane da yanayin yanayin kariyar muhalli mai tsanani, tsarin jiyya na asali ya ƙara kasa biyan bukatun VOCs a cikin zurfin jiyya. S19 joe

Bayan sau nuni da bincike, mu kamfanin rungumi dabi'ar hade tsari hanya na Multi-mataki wanka + gas-ruwa rabuwa + Rotary zafi ajiya m konewa fasahar (RTO) a kan tushen cikakken riba tsohon. Ana wanke iskar gas na kowane tsari kuma an riga an tsara shi ta hanyar rarrabuwa. NH3 a cikin iskar gas ɗin ana wanke shi ta ruwa mai sha a cikin hasumiya mai ɗaukar nauyi kuma yana amsawa da H2SO4 a cikin ruwan sha. Ruwan sha da ke cikin hasumiya yana fitar da shi zuwa uwar tankin giya na sashin ammonium sulfide. A cikin hasumiya ta alkali, ana amfani da maganin NaOH don shafe H2S, HCN da sauran iskar gas a cikin iskar gas, kuma ana fitar da ruwan sha a cikin hasumiya ta alkali a cikin tankin bayanin injin. Bayan an wanke sharar iskar gas na sashin hakar gishiri, ana wanke sassan gishiri a cikin iskar gas; Ana tattara iskar gas ɗin a cikin babban bututun iskar gas bayan an wanke, sannan a aika zuwa ga mai raba ruwan gas ta fan ɗin relay don rabuwa da ruwan gas. Bayan jerin gano tattara hankalin kan layi da kuma sarrafa matsi/gudanar ruwa a cikin tsari, ana aika babban daftarin da aka jawo zuwa ga rotary zafin ajiya mai zaman kansa mai ƙonawa (RTO) don maganin tsarkakewar iskar gas. VOCs≤20mg/Nm3 (ba methane jimlar hydrocarbon) bayan canzawa; NOx≤35mg/Nm3; SO2≤15mg/Nm3; Ƙarƙashin ƙwayar cuta ≤10mg/Nm3; NH3≤5mg/Nm3; H2S≤0.5mg/Nm3; HCN≤0.5mg/Nm3, cikakken cika da dacewa bukatun na Volatile Organic Matter watsi Standard Standard for Masana'antu Enterprises, Pollutant watsi Standard for Coking Chemical Industry da matsananci-ƙananan watsi da gurbatawa, kuma yana da abũbuwan amfãni daga high cire yadda ya dace, low yi da kuma aiki kudin, aminci da aminci.