Cov txheej txheem thev naus laus zis thiab kev piav qhia ntawm cov roj av hydrogen tsim cov nroj tsuag (2)
3) Kev hloov pauv CO: Tom qab cov roj hloov pauv rov qab tau cua sov los ntawm lub boiler cua sov pov tseg, qhov kub poob qis txog li 360 ° C thiab nkag mus rau hauv lub cub tawg hloov pauv kub nruab nrab. Nyob rau hauv qhov kev ua ntawm cov catalyst uas ua los ntawm hlau, carbon monoxide reacts nrog cov pa dej los tsim cov pa roj carbon dioxide thiab hydrogen. Cov tshuaj tiv thaiv tseem ceeb yog raws li nram no:
CO+H2O→CO2 +H2 +Q
Qhov kev hloov pauv CO yog ib qho kev hloov pauv exothermic. Qhov kub qis yog qhov zoo rau qhov sib npaug ntawm kev hloov pauv, uas tuaj yeem tau txais qhov hloov pauv CO siab dua, yog li ua rau muaj hydrogen ntau ntxiv rau ib chav ntawm cov khoom siv raw. Yuav kom yooj yim rau cov txheej txheem thiab txuag kev nqis peev, kev hloov pauv roj av mus rau hydrogen feem ntau tsuas yog siv ib theem hloov pauv.
4) Lub hauv paus ntsiab lus ntawm kev rho tawm hydrogen los ntawm PSA siab viav vias adsorption: Adsorption yog hais txog qhov xwm txheej thiab cov txheej txheem uas thaum ob yam khoom uas muaj ntau theem sib txawv sib cuag, cov molecule ntawm cov khoom uas muaj qhov ceev qis dua yuav nplua nuj rau ntawm qhov chaw ntawm cov khoom uas muaj qhov ceev siab dua. Cov khoom uas muaj cov nyhuv adsorption (feem ntau yog cov khoom porous nrog qhov ceev loj) hu ua adsorbent, thiab cov khoom adsorbed (feem ntau yog cov roj uas muaj qhov ceev me me) hu ua adsorbate. Nws muaj ob yam khoom: ib qho yog tias lub peev xwm adsorption rau cov khoom sib txawv sib txawv, thiab qhov thib ob yog tias lub peev xwm adsorption ntawm adsorbate ntawm adsorbent nce nrog qhov nce ntawm qhov siab ib nrab ntawm adsorbate thiab txo qis nrog qhov nce ntawm qhov kub adsorption. Los ntawm kev siv thawj yam khoom ntawm adsorbent, lub hom phiaj ntawm kev ntxuav hydrogen tuaj yeem ua tiav los ntawm kev nyiam adsorbing cov khoom tsis huv hauv qhov chaw muaj roj hydrogen; los ntawm kev siv qhov thib ob yam khoom ntawm adsorbent, adsorbent tuaj yeem adsorbed ntawm qhov kub qis thiab siab siab thiab desorbed thiab rov tsim dua ntawm qhov kub thiab siab qis, yog li tsim lub voj voog adsorption thiab rov tsim dua ntawm adsorbent kom ua tiav lub hom phiaj ntawm kev txuas ntxiv hydrogen. kev rho tawm
Kev sib raug zoo ntawm qhov adsorption ntau npaum li cas, siab thiab kub ntawm PSA siab viav vias adsorption
Los ntawm Langmuir adsorption isotherm equation, peb paub tias ntawm qee qhov kub, qhov kev tshem tawm ntawm cov khoom adsorbed yuav tsum tau ua tiav los ntawm kev txo nws qhov kev ntxhov siab ib nrab. Cov txheej txheem desorption feem ntau siv suav nrog kev tshuaj xyuas qhov siab ntawm huab cua thiab kev tshuaj xyuas lub tshuab nqus tsev, ob qho tib si lub hom phiaj yog txo qhov kev ntxhov siab ib nrab ntawm cov khoom adsorbed rau ntawm cov adsorbent.
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