Lub Multifaceted Tus Nqi Ntawm Cov Cua Separation Chav nyob hauv Petrochemical Production

Petrochemical ntau lawm suav nrog ntau theem- suav nrog kev ua cov khoom siv raw, cov tshuaj tiv thaiv catalytic, kev sib cais thiab kev ua kom zoo, thiab kev ruaj ntseg cia thiab kev thauj mus los-nrog rau cov khoom siv roj ua cov xov tseem ceeb ua haujlwm los ntawm tag nrho cov haujlwm. Cov chav sib cais huab cua (ASUs) ntiav cov txheej txheem xws li kev sib cais cryogenic lossis lub siab viav vias adsorption (PSA) kom cais cov qib siab -purity Cheebtsam- xws li oxygen, nitrogen, thiab argon- los ntawm huab cua hauv huab cua, yog li muab cov nroj tsuag petrochemical nrog ntau yam roj yam tseem ceeb.

 

Ua ntej thiab qhov tseem ceeb tshaj plaws, ASUs ua lub hauv paus tseem ceeb ntawm siab -purity oxygen. Cov pa oxygen yog qhov tseem ceeb hauv ntau yam txheej txheem, suav nrog cov catalytic cracking, oxidation cov tshuaj tiv thaiv, thee - mus rau - kua hloov dua siab tshiab, thiab ethylene ntau lawm. Piv txwv li, qhia siab - purity oxygen (Ntau dua lossis sib npaug li 99.5%) thaum lub sij hawm ethylene cracking txheej txheem tuaj yeem ua kom tus nqi tawg, txo lub sij hawm cov tshuaj tiv thaiv, thiab txo cov tiam ntawm cov khoom lag luam. Raws li kev lag luam cov ntaub ntawv, kev siv cov pa siab tshaj -purity oxygen tuaj yeem txhawb nqa ethylene yields los ntawm 5% mus rau 10% thaum tib lub sijhawm txo cov nqi siv hluav taws xob. ASUs muaj qhov yooj yim los kho cov pa tawm thiab purity qib raws li cov kev cai tshwj xeeb ntawm cov txheej txheem tsim khoom sib txawv, yog li ua kom muaj kev hloov pauv ntau lawm.

 

Qhov thib ob, lub luag haujlwm tseem ceeb ntawm nitrogen hauv kev ua kom muaj kev nyab xeeb tsis tuaj yeem raug kwv yees. Muab hais tias ntau cov khoom siv petrochemical yog cov nplaim hluav taws kub lossis cov khoom tawg, cov roj inert yuav tsum tau siv thaum lub sij hawm tsim khoom, khaws cia, thiab kev thauj mus los kom tshem tawm cov pa oxygen thiab txo qhov kev pheej hmoo ntawm kev tawg. High-purity nitrogen (Ntau dua lossis sib npaug li 99.9%) feem ntau yog siv rau kev ntxuav thiab inerting reactors, cia tank, thiab kav dej. Thaum cov nroj tsuag tu lossis hloov khoom siv, nitrogen purging tuaj yeem txo cov pa oxygen kom qis dua 3%, yog li tshem tawm qhov muaj peev xwm rau hluav taws kub thiab tawg. Loj - nplai petrochemical complexes feem ntau feature centralized nitrogen mov systems, nrog ASUs ua tus tseem ceeb tivthaiv kom ntseeg tau qhov kev cia siab ntawm cov systems.

 

Tsis tas li ntawd, ASUs muaj peev xwm rov qab tau thiab muab cov pa roj tsawg -xws li argon, neon, thiab xenon- tsim cov nyiaj tau los ntxiv rau cov lag luam petrochemical. Argon yog dav siv los ua cov roj tiv thaiv hauv cov hlau vuam thiab rau kev ntsuas cov cuab yeej ntsuas qhov tseeb; Lub caij no, neon thiab xenon hais kom muaj nuj nqis ntxiv hauv cov ntawv tshwj xeeb xws li teeb pom kev zoo thiab laser tshuab. Rau cov tuam txhab nrhiav kev sib txawv ntawm lawv cov khoom lag luam thiab txhim kho kev lag luam rov qab los, kev rov qab los ntawm cov pa roj tsawg yog qhov tseem ceeb ntawm kev sib cais huab cua.

 

Nyob rau hauv cov nqe lus ntawm lub zog efficiency thiab ib puag ncig tiv thaiv, niaj hnub huab cua sib cais units yog evolving mus rau qis zog noj thiab siab dua qib ntawm automation. Thaum cov txheej txheem kev sib cais ntawm cov txheej txheem cryogenic ib txwm muaj peev xwm ua tau siab - cov pa roj purity, lawv muaj peev xwm siv hluav taws xob ntau. Hauv qhov sib piv, cov chav sib cais huab cua tshiab tau ua tiav qhov kev nce qib tseem ceeb hauv kev ua haujlwm ntawm compressor, kev tsim hluav taws xob hloov pauv, thiab kev ua kom zoo dua qub, ua kom 10-15% txo qis hauv kev siv hluav taws xob rau tib cov khoom tsim tawm. Tsis tas li ntawd, qee lub tuam txhab petrochemical tau koom ua ke cov chav no nrog cov khoom siv hluav taws xob pov tseg los pab txhawb kev rov siv cov thermal zog hauv cov txheej txheem roj, yog li txo qis carbon emissions thiab ua raws li lub hom phiaj ntawm "Dual Carbon" teg num.