Ƙungiyar raba iska ta KDON-32000/19000 ita ce babbar ƙungiyar injiniyan jama'a mai tallafawa don aikin 200,000 t/a ethylene glycol. Yafi bayar da danyen hydrogen ga sashin gasification na matsa lamba, ethylene glycol synthesis unit, sulfur recovery, da kuma najasa magani, da kuma samar da high da low matsa lamba nitrogen zuwa daban-daban raka'a na ethylene glycol aikin domin fara-up tsarkakewa da sealing, da kuma samar da naúrar iska da kayan aiki iska.
A.TASHIN FASAHA
KDON32000 / 19000 kayan rabuwar iska an tsara shi kuma kerarre ta Newdraft, kuma yana ɗaukar tsarin kwararar tsari na cikakken ƙarancin ƙarancin ƙwayar ƙwayar ƙwayar ƙwayar cuta, injin haɓaka injin injin injin injin firiji, samfurin oxygen na ciki, matsawa ƙarancin nitrogen na waje, da haɓakar iska. Hasumiya ta ƙasa tana ɗaukar hasumiya mai inganci mai inganci, kuma hasumiya ta sama tana ɗaukar tsararrun shiryawa da cikakken tsarin samar da argon mara amfani da hydrogen.
Ana tsotse danyen iskar daga mashigar, kuma ana cire kura da sauran ƙazantattun injina ta hanyar tace iska mai tsarkake kanta. Iskar bayan tacewa ta shiga cikin centrifugal compressor, kuma bayan an matsa ta da compressor, ta shiga hasumiya mai sanyaya iska. Yayin sanyaya, yana kuma iya tsaftace ƙazanta waɗanda ke sauƙin narkewa cikin ruwa. Iskar bayan barin hasumiya mai sanyaya ta shiga cikin injin tsabtace kwayoyin halitta don canzawa. Carbon dioxide, acetylene da danshi a cikin iska suna adsorbed. Ana amfani da mai tsabtace ƙwayar ƙwayar ƙwayar cuta a cikin yanayin sauyawa guda biyu, ɗayan yana aiki yayin da ɗayan ke sake haɓakawa. Zagayowar aikin mai tsarkakewa kusan awanni 8 ne, kuma ana kunna mai tsarkakewa guda ɗaya sau ɗaya a cikin sa'o'i 4, kuma ana sarrafa sauyawa ta atomatik ta shirin da za a iya gyarawa.
Iska bayan da kwayoyin sieve adsorber ya kasu kashi uku rafuka: daya rafi ne kai tsaye cire daga kwayoyin sieve adsorber a matsayin kayan aiki iska don iska rabuwa kayan aiki, daya rafi shiga cikin low-matsa lamba farantin-fin zafi Exchanger, an sanyaya da reflux gurbace ammonia da ammonia, sa'an nan ya shiga cikin ƙananan hasumiya, da farko ya rabu da rafi guda biyu. matsawa na ƙarfafawa. Ana fitar da rafi ɗaya kai tsaye kuma ana amfani da shi azaman tsarin kayan aikin iska da iska na na'urar bayan an rage matsi, ɗayan rafi yana ci gaba da matsawa a cikin ƙararrawa kuma ya kasu kashi biyu koguna bayan an matsa shi a mataki na biyu. Ana fitar da rafi daya a sanyaya zuwa dakin da zafin jiki kuma ya tafi zuwa ƙarshen haɓaka injin injin injin don ƙarin matsi, sa'an nan kuma a fitar da shi ta wurin mai ɗaukar zafi mai zafi sannan a shigar da mai faɗaɗa don faɗaɗawa da aiki. Iskar da aka faɗaɗa tana shiga cikin mai raba ruwan gas, kuma iskan da aka raba ta shiga cikin hasumiya ta ƙasa. Ruwan iska da aka samo daga mai raba gas-ruwa ya shiga cikin ƙananan hasumiya a matsayin ruwa mai reflux ruwa, kuma sauran rafi yana ci gaba da matsawa a cikin mai ƙarfafawa zuwa matakin ƙarshe na matsawa, sa'an nan kuma an sanyaya shi zuwa dakin da zafin jiki ta mai sanyaya kuma ya shiga babban matsi mai zafi mai zafi mai zafi don musayar zafi tare da ruwa oxygen da reflux gurbataccen nitrogen. Wannan bangare na iska mai tsananin zafi yana shakewa bayan an fitar da iskar ruwa daga kasan na'urar musayar zafi, sai ta shiga cikin hasumiya ta kasa bayan ta tunkude. Bayan da aka fara distilled iskar a cikin ƙananan hasumiya, ana samun iska mai raɗaɗi, iska mai wadataccen iskar oxygen, ruwa mai tsabta na nitrogen da ammonia mai tsabta. Ruwan da ba shi da ƙarfi, iska mai wadataccen iskar oxygen da ruwa mai tsaftar nitrogen ana sanyaya sosai a cikin mai sanyaya kuma a jefar da shi cikin hasumiya ta sama don ƙarin distillation. Ruwan iskar oxygen da aka samu a kasan hasumiya na sama ana matse shi ta hanyar famfon oxygen na ruwa sannan ya shiga babban matsi na farantin-fin zafi don sake dumama, sannan ya shiga cibiyar sadarwar bututun oxygen. Ruwan nitrogen da aka samu a saman hasumiya na ƙasa ana fitar da shi kuma ya shiga cikin tankin ajiyar ruwa na ammonia. Babban ammoniya mai tsabta da aka samu a saman hasumiya na ƙasa yana sake yin zafi ta hanyar ƙananan zafi mai zafi kuma ya shiga cibiyar sadarwar bututun ammonia. Ƙananan ƙarancin nitrogen da aka samu daga ɓangaren sama na hasumiya na sama yana sake yin zafi ta hanyar ƙananan zafin jiki na faranti-fin zafi mai zafi sannan ya fita daga akwatin sanyi, sa'an nan kuma ya matsa zuwa 0.45MPa ta hanyar compressor nitrogen kuma ya shiga cibiyar sadarwar bututun ammonia. Ana fitar da wani ɗan ƙaramin juzu'in argon daga tsakiyar hasumiya ta sama kuma a aika zuwa hasumiya ta ɗanyen xenon. An karkatar da juzu'in xenon a cikin hasumiya na ɗanyen argon don samun ɗanyen ruwa argon, sannan a aika zuwa tsakiyar hasumiya mai ladabi. Bayan distillation a cikin hasumiya mai ladabi argon, ana samun xenon ruwa mai tsabta a kasan hasumiya. Ana fitar da iskar ammonia mai datti daga ɓangaren sama na hasumiya na sama, kuma bayan an sake kunna shi ta mai sanyaya, ƙaramin magudanar faranti-fin mai zafi mai zafi da babban matsi mai faranti-fin zafi mai zafi da kuma fita cikin akwatin sanyi, an kasu kashi biyu: ɓangaren ɗaya yana shiga cikin injin dumama na tsarin tsarkakewa na ƙwayoyin ƙwayoyin cuta kamar yadda keɓaɓɓiyar sieve ke haɓaka iskar iskar gas mai sanyi, da iskar gas. Lokacin da ake buƙatar fara tsarin ajiyar ruwa na iskar oxygen, ruwan oxygen na ruwa a cikin tankin ajiyar ruwa na oxygen yana canzawa zuwa cikin ruwa oxygen vaporizer ta hanyar bawul mai daidaitawa, sannan ya shiga cibiyar sadarwar bututun iskar oxygen bayan samun iskar oxygen mara ƙarfi; lokacin da ake buƙatar fara tsarin ajiyar ruwa na nitrogen, ruwan ammonia a cikin tankin ajiyar ruwa na nitrogen yana canzawa zuwa cikin ruwa oxygen vaporizer ta hanyar bawul mai daidaitawa, sannan a matsa shi ta hanyar kwampreshin ammonia don samun nitrogen mai matsananciyar matsa lamba da ammonia mai ƙarancin ƙarfi, sannan shigar da hanyar sadarwar bututun nitrogen.
TSARIN B.CONTROL
Bisa ga ma'auni da tsarin halayen kayan aikin rabuwa na iska, ana karɓar tsarin kulawa da rarrabawar DCS, tare da zaɓi na tsarin DCS na ci gaba na duniya, masu nazarin bawul na kan layi da sauran ma'auni da abubuwan sarrafawa. Bugu da ƙari, samun damar kammala aikin sarrafawa na sashin rabuwa na iska, yana iya sanya duk bawuloli masu sarrafawa a cikin wani wuri mai aminci lokacin da aka rufe naúrar a cikin haɗari, kuma famfo masu dacewa sun shiga yanayin tsaka-tsakin aminci don tabbatar da amincin sashin rabuwar iska. Manya-manyan kwampreso na turbine suna amfani da tsarin sarrafa ITCC (Turbine Compressor unit hadedde control system) don kammala aikin sarrafa tafiye-tafiye mai saurin gudu, kulawar yankewar gaggawa da ayyukan kula da cutar hawan jini, kuma suna iya aika sigina zuwa tsarin kula da DCS a cikin nau'ikan wayoyi da sadarwa.
C.Main saka idanu na sashin raba iska
Tsaftace bincike na samfurin oxygen da iskar gas da ke barin ƙarancin zafi mai zafi, bincike mai tsafta na ƙananan hasumiya ruwa mai iska, nazarin ƙananan hasumiya mai tsabta ruwa nitrogen, bincike mai tsabta na iskar gas mai barin babban hasumiya, bincike mai tsabta na iskar iskar oxygen a cikin hasumiya ta sama, zafin jiki bayan ɗanyen kwandon shara reflux ruwa iska akai-akai kwarara bawul, matsa lamba da matakin ruwa mai nuna iskar gas zuwa distillation gas high-matsi zafi Exchanger, tsarkakewa bincike na iska shiga low-matsa lamba zafi Exchanger, iska zafin jiki barin high-matsi zafi Exchanger, zafin jiki da kuma zafin jiki bambanci na datti ammonia gas barin zafi Exchanger, gas bincike a babba hasumiya xenon juzu'i hakar tashar jiragen ruwa: duk abin da yake don tattara bayanai a lokacin farawa da na al'ada aiki, wanda yake da amfani ga daidaita yanayin aiki na iska rabuwa naúrar da iska al'ada naúrar. Analysis na nitrous oxide da acetylene abun ciki a cikin babban sanyaya, da kuma nazarin danshi abun ciki a bunkasa iska: domin hana iska tare da danshi daga shiga cikin distillation tsarin, haddasa solidification da kuma toshe zafi tashar tashar, shafi zafi Exchanger yankin da kuma yadda ya dace, acetylene zai fashe bayan tarawa a cikin babban sanyaya ya wuce wani darajar. Liquid oxygen famfo shaft hatimi iskar gas kwarara, matsa lamba bincike, ruwa oxygen famfo hali hita zafin jiki, Labyrinth hatimi gas zafin jiki, ruwa iska zafin jiki bayan fadada, expander hatimi gas matsa lamba, kwarara, bambancin matsa lamba nuni, lubricating mai matsa lamba, man fetur matakin da mai sanyaya raya zafin jiki, turbine expander fadada karshen, booster karshen mai mashigarwa kwarara, hali zafin jiki, vibration nuni: duk don tabbatar da lafiya turbi ruwa famfo, da al'ada aiki da turbi ruwa. tabbatar da al'ada aiki na iska fractionation.
Molecular sieve dumama babban matsa lamba, kwarara bincike, kwayoyin sieve iska (datti nitrogen) mashiga da kuma kanti yanayin zafi, matsa lamba nuni, kwayoyin sieve sabunta gas zafin jiki da kwarara, tsarkakewa tsarin juriya nuni, kwayoyin sieve kanti matsa lamba nuni, tururi mashiga zafin jiki, matsa lamba nuni ƙararrawa, sabuntawa gas kanti hita H20 analysis ƙararrawa, ƙararrawa iska, condensate iska iska analysis, iska iska analysis ƙananan hasumiya da alamar haɓakawa mai haɓakawa: don tabbatar da aikin sauyawa na yau da kullun na tsarin tallan simintin ƙwayoyin cuta da kuma tabbatar da cewa abun ciki na CO2 da H20 na iska da ke shiga cikin akwatin sanyi yana cikin ƙaramin matakin. Alamar matsa lamba na kayan aiki: don tabbatar da cewa iskar kayan aiki don rabuwar iska da kayan aikin da aka ba da su zuwa cibiyar sadarwar bututun sun kai 0.6MPa (G) don tabbatar da aikin al'ada na samarwa.
D.Halayen sashin raba iska
1. Halayen tsari
Saboda matsanancin matsin lamba na iskar oxygen na aikin ethylene glycol, KDON32000 / 19000 kayan aikin rabuwa na iska yana ɗaukar yanayin haɓaka iska, matsawa ruwa oxygen na ciki da tsarin matsawa na ammoniya, wato, mai haɓaka iska + ruwa mai iskar oxygen + mai haɓaka injin turbine yana haɗuwa tare da madaidaicin ƙungiyar tsarin musayar zafi don maye gurbin matsa lamba na waje. Haɗarin aminci da aka haifar ta hanyar amfani da na'urorin oxygen a cikin tsarin matsawa na waje sun ragu. A lokaci guda kuma, babban adadin iskar oxygen da ake fitar da shi ta babban sanyaya na iya tabbatar da cewa an rage yuwuwar tarawar hydrocarbon a cikin babban iskar oxygen mai sanyaya don tabbatar da amintaccen aiki na kayan aikin raba iska. Tsarin matsawa na ciki yana da ƙananan farashin saka hannun jari da ƙarin daidaitaccen tsari.
2. Halayen kayan aikin raba iska
Fitar iska mai tsaftacewa tana sanye da tsarin sarrafawa ta atomatik, wanda zai iya jujjuya lokaci ta atomatik kuma zai iya daidaita shirin gwargwadon girman juriya. Tsarin precooling yana ɗaukar hasumiya mai inganci da ƙarancin juriya bazuwar hasumiya, kuma mai rarraba ruwa yana ɗaukar sabon mai rarrabawa mai inganci da ci gaba, wanda ba wai kawai yana tabbatar da cikakkiyar hulɗa tsakanin ruwa da iska ba, amma kuma yana tabbatar da aikin musayar zafi. Ana saita tarkacen ragamar waya a saman don tabbatar da cewa iskar da ke fitowa daga hasumiya mai sanyaya iska ba ta ɗaukar ruwa. Tsarin adsorption sieve na kwayoyin halitta yana ɗaukar dogon zagayowar da tsarkakewar gado mai Layer Layer biyu. Tsarin sauyawa yana ɗaukar fasahar sarrafa canji mara tasiri, kuma ana amfani da injin tururi na musamman don hana tururi mai dumama daga zubewa zuwa ga dattin nitrogen yayin matakin farfadowa.
Gabaɗayan tsarin tsarin hasumiya na distillation yana ɗaukar ci-gaba na ASPEN da lissafin software na HYSYS. Hasumiya ta ƙasa tana ɗaukar hasumiya mai inganci mai inganci kuma hasumiya ta sama tana ɗaukar hasumiya ta yau da kullun don tabbatar da ƙimar haɓakar na'urar da rage yawan kuzari.
E.Tattaunawa kan tsarin sauke kaya da lodin ababen hawa masu sanyaya sanyi
1.Sharuɗɗan da ya kamata a cika kafin fara rabuwar iska:
Kafin farawa, tsarawa da rubuta shirin farawa, gami da tsarin farawa da kula da haɗari na gaggawa, da dai sauransu. Duk ayyukan yayin aikin farawa dole ne a yi a wurin.
An kammala aikin tsaftacewa, gogewa da gwajin aikin mai mai mai. Kafin fara famfon mai mai mai, dole ne a ƙara iskar gas don hana zubar mai. Da farko, dole ne a aiwatar da tacewa da kai na tankin mai mai mai. Idan an kai wani mataki na tsafta, ana haɗa bututun mai don yin ruwa da tacewa, amma ana ƙara takarda tace kafin a shigar da kwampreso da injin turbine kuma a koyaushe a canza su don tabbatar da tsabtar man da ke shiga cikin kayan aiki. An kammala aikin watsawa da ƙaddamar da tsarin ruwa mai gudana, tsarin tsaftace ruwa, da tsarin magudanar ruwa na rabuwar iska. Kafin kafuwa, bututun da ke wadatar da iskar oxygen na rabuwar iska yana buƙatar ragewa, tsinkaya, da wucewa, sannan a cika shi da iskar gas. An shigar da bututun, injina, lantarki, da na'urori (sai dai na'urorin tantancewa da na'urorin aunawa) na kayan aikin raba iska da kuma daidaita su don cancanta.
Dukkanin famfunan ruwa masu aiki, famfunan iskar oxygen na ruwa, damfarar iska, masu haɓakawa, injin faɗaɗa injina, da sauransu suna da yanayin farawa, kuma yakamata a fara gwada wasu akan injin guda ɗaya.
Na'urar sauya sheka ta kwayoyin halitta tana da yanayin farawa, kuma an tabbatar da shirin sauya tsarin kwayoyin zai iya aiki akai-akai. An kammala dumama da tsaftace bututun mai mai tsananin zafi. An yi amfani da tsarin iska na kayan aiki na jiran aiki, yana kiyaye karfin iska na kayan aiki sama da 0.6MPa (G).
2.Purge of iska rabuwa naúrar bututun
Fara tsarin mai mai mai da tsarin iskar gas na injin turbi, injin damfara da famfo ruwa mai sanyaya. Kafin fara na'urar damfara, buɗe bawul ɗin iska na injin kwampreshin iska kuma rufe mashigar iskar hasumiya mai sanyaya iska da farantin makafi. Bayan da iska kwampreso kanti bututu ne purged, da shaye matsa lamba kai rated shaye matsa lamba da bututu tsarkake manufa shi ne m, gama iska sanyaya hasumiya mashiga bututu, fara da iska precooling tsarin (kafin tsarkakewa, da iska sanyaya hasumiya shiryawa ba dole ba ne a cika; da iska mashiga kwayoyin sieve adsorber mashiga flange da aka katse da tsarin da ake nufi da tsarkakewa, jira har sai da tsare-tsaren) jira. tsarkakewa, da kwayoyin sieve adsorber adsorbent dole ne ba za a cika; da iska mashiga sanyi akwatin mashiga flange dole ne a katse), tsayar da iska kwampreso har sai da manufa shi ne m, cika iska sanyaya hasumiya shiryawa da kwayoyin sieve adsorber adsorbent, da kuma zata sake farawa da tace, turbine, iska kwampreso, iska precoo tsarin bayan makonni biyu tsarin, sieve tsarin. sabuntawa, sanyaya, haɓaka matsa lamba, adsorption, da rage matsa lamba. Bayan wani lokaci na dumama, ana iya busa bututun iska na tsarin bayan adsorber sieve na kwayoyin halitta da bututun ciki na hasumiya mai juzu'i. Wannan ya haɗa da masu musayar zafi mai ƙarfi, masu musayar zafi mai ƙarancin ƙarfi, masu haɓaka iska, faɗaɗa injin injin, da kayan hasumiya na rabuwar iska. Kula da sarrafa kwararar iska da ke shiga tsarin tsarkakewa ta kwayoyin halitta don guje wa juriyar juriya na kwayoyin halitta wanda ke lalata shimfidar gado. Kafin busa hasumiya mai juzu'i, duk bututun iska da ke shiga cikin akwatin sanyi na juzu'i dole ne a sanye su da abubuwan tacewa na wucin gadi don hana ƙura, walda da sauran ƙazanta daga shiga cikin na'urar musayar zafi da tasiri tasirin musayar zafi. Fara mai mai mai da tsarin iskar gas kafin busa injin faɗaɗa injin turbine da ruwa mai iskar oxygen. Duk wuraren rufe iskar gas na kayan aikin rabuwar iska, gami da bututun injin faɗaɗa injin, dole ne a rufe.
3. Bare sanyaya da karshe commissioning na iska rabuwa naúrar
Dukkan bututun da ke waje da akwatin sanyi ana busa su, kuma duk bututun da kayan aikin da ke cikin akwatin sanyi ana dumama su kuma ana hura su don saduwa da yanayin sanyi da shirya don gwajin sanyi.
Lokacin da sanyaya hasumiyar distillation ta fara, iskar da injin kwampreshin iska ke fitarwa ba zai iya shiga hasumiya ta distillation gaba daya ba. Ana fitar da iskar da ta wuce kima a cikin sararin samaniya ta hanyar bawul ɗin huɗawa, ta yadda za a kiyaye matsa lamba na fitarwar iska ba canzawa. Yayin da zafin jiki na kowane bangare na hasumiya na distillation yana raguwa a hankali, yawan iskar da ake shaka zai karu a hankali. A wannan lokacin, an aika wani ɓangare na reflux gas a cikin hasumiya ta distillation zuwa hasumiya mai sanyaya ruwa. Dole ne a aiwatar da tsarin sanyaya sannu a hankali kuma a ko'ina, tare da matsakaicin yanayin sanyaya na 1 ~ 2 ℃ / h don tabbatar da yanayin zafin jiki na kowane bangare. A lokacin aikin sanyaya, ƙarfin sanyaya na mai faɗaɗa gas ya kamata a kiyaye shi a matsakaici. Lokacin da iska a ƙarshen sanyi na babban mai musanya zafi yana kusa da zafin jiki, matakin sanyaya ya ƙare.
Ana kiyaye matakin sanyaya na akwatin sanyi na wani ɗan lokaci, kuma ana duba ɗigogi daban-daban da sauran sassan da ba a gama ba kuma ana gyara su. Sa'an nan kuma dakatar da na'ura mataki-mataki, fara ɗora yashi lu'u-lu'u a cikin akwatin sanyi, fara kayan aikin rarraba iska mataki-mataki bayan an yi lodi, kuma sake shiga cikin yanayin sanyaya. Lura cewa lokacin da aka fara na'urar rabuwar iska, iskar gas ɗin sabuntawa na simintin ƙwayoyin cuta yana amfani da iskar da aka tsarkake ta hanyar simintin ƙwayoyin cuta. Lokacin da aka fara kayan aikin raba iska kuma akwai isassun iskar gas na farfadowa, ana amfani da ƙazantaccen hanyar kwararar ammonia. A lokacin aikin sanyaya, yawan zafin jiki a cikin akwatin sanyi yana raguwa a hankali. Dole ne a buɗe tsarin cika akwatin ammonia mai sanyi a cikin lokaci don hana mummunan matsa lamba a cikin akwatin sanyi. Sa'an nan kuma an ƙara sanyaya kayan aiki a cikin akwati mai sanyi, iska ta fara farawa, ruwa ya fara bayyana a cikin ƙananan hasumiya, kuma an fara kafa tsarin distillation na sama da ƙananan hasumiya. Sannan sannu a hankali daidaita bawul ɗin ɗaya bayan ɗaya don sanya rabuwar iska ta gudana akai-akai.
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