Njira yopangira mpweya wachilengedwe wachilengedwe

Njira yopangira mpweya wachilengedwe wachilengedwe

Njira yopangira haidrojeni kuchokera ku gasi lachilengedwe imakhala ndi magawo anayi: kuchiza mpweya wodyetsa, kusintha nthunzi, kusintha kwa CO2 ndi kuyeretsa kwa haidrojeni.

(1) Chipangizo choyeretsera mpweya wa feed chimagwiritsidwa ntchito makamaka pochotsa mpweya wachilengedwe, ndipo MnO ndi ZnO desulfurizers zimagwiritsidwa ntchito kuchotsa H2S ndi SO2. Mphamvu yogwiritsira ntchito mpweya wa feed ndi yayikulu, kotero compressor yayikulu ya centrifugal imasankhidwa ikakanikiza mpweya wa feed.

(2) Chigawo chosinthira nthunzi. Nthunzi ya madzi imagwiritsidwa ntchito ngati okosijeni posintha ma hydrocarbon pogwiritsa ntchito nickel catalyst kuti ipeze mpweya wosinthira kuti ipange haidrojeni. Mtundu ndi kapangidwe ka reformer zili ndi makhalidwe awoawo, ndipo kapangidwe kake, njira yolipirira kutentha ndi njira yokonzera ya osonkhanitsa mpweya wapamwamba ndi wotsika ndizosiyana. Ngakhale kuti zosinthira kutentha zomwe zili mu gawo la convection zimayikidwa mosiyana, magawo ogwirira ntchito a kusintha kwa kutentha kwambiri ndi chiŵerengero chochepa cha kaboni wa madzi zimagwiritsidwa ntchito mu chipangizo chosinthira nthunzi, zomwe zimathandiza kukonza kuzama kwa kusintha ndikusunga kugwiritsa ntchito zinthu zopangira.

(3) Gawo losinthira CO. Mpweya wodyetsa womwe umatumizidwa kuchokera ku reformer uli ndi kuchuluka kwa Co. Ntchito yosinthira ndikupangitsa co kuti igwirizane ndi nthunzi kuti ipange CO2 ndi H2 pamaso pa catalyst. Malinga ndi kutentha kwa kusintha, njira yosinthira ikhoza kugawidwa m'magulu awiri: kusintha kwa kutentha kwakukulu (350 ~ 400 ℃) ndi kusintha kwa kutentha kwapakati (kotsika kuposa 300 ~ 350 ℃). M'zaka zaposachedwa, chifukwa cha kutsindika pakusunga chuma, njira yosinthira magawo awiri ya CO yosinthira kutentha kwakukulu ndi kusintha kwa kutentha kochepa yagwiritsidwa ntchito pokhazikitsa njira yosinthira, kuti achepetse kugwiritsa ntchito zipangizo zopangira.

(4) Chigawo choyeretsera haidrojeni. Mu ndondomekoyi, kampani iliyonse yopanga haidrojeni yagwiritsa ntchito njira yoyeretsera ndi kugawa mphamvu ya pressure swing (PSA) yokhala ndi mphamvu zochepa kuti ilowe m'malo mwa njira yochotsera mpweya ndi kuyeretsa ndi njira ya methane yokhala ndi mphamvu zambiri, kuti akwaniritse cholinga chosunga mphamvu ndikupangitsa kuti njirayo ikhale yosavuta, ndipo haidrojeni yokhala ndi chiyero mpaka 99.9% ingapezeke pamalo otulukira chipangizocho.