1. Cua Compression thiab Purification txheej txheem
Nws yog ib qho tseem ceeb uas cov huab cua raw khoom nkag mus rau carbon molecular sieve (CMS) adsorption ntauwd yog huv si; Kev nkag mus ntawm cov khoom siv los yog cov organic vapors rau hauv cov pej thuam tuaj yeem txhaws cov micropores ntawm CMS thiab maj mam degrade nws cov kev sib cais.
Cov hau kev rau kev ua kom huv huv huab cua muaj xws li: (1) tso cov cua compressor kom deb ntawm thaj chaw uas muaj plua plav, roj pos huab, lossis cov pa hauv nruab nrog; thiab (2) hla huab cua los ntawm cov tshuab xws li cov tub yees tshuab ziab khaub ncaws thiab adsorbent purification units ua ntej nws nkag mus rau CMS adsorption ntauwd.
2. Khoom Nitrogen Concentration thiab tso zis
Thaum tsim cov nitrogen siv CMS, ob qho tib si N2 concentration thiab cov roj tso tawm tuaj yeem hloov kho raws li cov neeg siv khoom xav tau. Rau lub sijhawm ua haujlwm ruaj khov thiab kev ua haujlwm siab, txo cov roj tso tawm tus nqi nce N2 concentration, thaum nce tus nqi tso tawm txo nws. Cov neeg siv tuaj yeem hloov kho raws li qhov xav tau tiag tiag.
3. Lub sij hawm sib npaug sib npaug
Nyob rau hauv CMS nitrogen tiam txheej txheem, thaum lub sij hawm adsorption nyob rau hauv ib tug pej thuam xaus, cov roj siab nyob rau hauv lub pej thuam yog kis tau - ntawm ob sab saum toj thiab hauv qab - mus rau lwm lub pej thuam (uas twb tau regenerated) kom txog rau thaum cov roj pressures nyob rau hauv ob lub yees sib npaug. Cov kauj ruam no yog hu ua siab sib npaug. Xaiv lub sij hawm sib npaug tsim nyog tso cai rau lub zog rov qab los thiab txo cov kev cuam tshuam cov quab yuam ntawm cov molecular sieve, yog li ncua lub neej kev pab cuam ntawm CMS. Raws li kev hloov pauv hloov ceev, lub sijhawm sib npaug ntawm lub siab feem ntau yog teem caij nruab nrab ntawm 1 thiab 3 vib nas this.
4. Lub Sij Hawm Ntau Lawm
Vim qhov sib txawv adsorption thiab diffusion tus nqi ntawm oxygen thiab nitrogen ntawm CMS, oxygen adsorption ncav cuag qhov sib npaug sai sai, thaum nitrogen adsorption tseem tsawg. Lub sij hawm luv luv ntawm cov khoom siv roj tuaj yeem ua kom cov roj tsim tau zoo ntawm CMS; Txawm li cas los xij, nws kuj tseem ua rau muaj kev ua haujlwm ntawm lub valve, ua rau kev ua haujlwm ntawm lub valve yog qhov tseem ceeb. Lub sij hawm adsorption feem ntau yog teem ntawm 30 thiab 120 vib nas this. Lub sij hawm tsim khoom luv luv raug pom zoo rau me me - nplai, siab - purity nitrogen generators, thaum lub sij hawm ntau lawm raug pom zoo rau loj - nplai tshuab ua kom qis dua - purity nitrogen. 5. Kev khiav hauj lwm siab
Carbon molecular sieves muaj ob qho tib si kinetic thiab equilibrium adsorption teebmeem; siab dua adsorbate ib nrab siab ua rau muaj peev xwm adsorption ntau dua, ua kom muaj zog adsorption zoo dua. Txawm li cas los xij, kev siab adsorption ntau dhau ua rau cov kev cai nruj dua ntawm kev xaiv cua compressor. Tsis tas li ntawd, atmospheric regeneration thiab vacuum regeneration processes muaj cov kev xav tau sib txawv. Xav txog cov xwm txheej no, nws raug nquahu kom teeb tsa lub siab adsorption ntawm 5-8 kg / cm² rau atmospheric regeneration txheej txheem thiab 3-5 kg / cm² rau cov txheej txheem nqus tsev.
6. Kev ua haujlwm kub
Tsawg adsorption kub txhim khu kev ua haujlwm ntawm carbon molecular sieves; Yog li ntawd, thaum twg ua tau, nws yog qhov zoo los txo qhov kub ntawm qhov adsorption hauv cov txheej txheem tsim nitrogen.