Chotsukira mpweya wothira mchira

Kufotokozera Kwachidule:

Tsatanetsatane wa Zamalonda

Kufotokozera

Mpweya wachilengedwe wothira mpweya wa mchira umagwiritsidwa ntchito makamaka pothana ndi mpweya wam'mbuyo wa chipangizo chobwezeretsa sulfure, komanso mpweya wotayira wa dziwe la sulfure lamadzimadzi ndi chipangizo chobwezeretsa sulfure cha TEG.
Kapangidwe ndi mphamvu yogwiritsira ntchito skid zimagwirizanitsidwa ndi chipangizo chobwezeretsa sulfure ndi chipangizo chochotsera madzi m'thupi.

Chitsulo chotsukira mpweya cha mchira wa gasi chachilengedwe chingagawidwe m'magulu anayi.

1. Njira yochepetsera ndi kuyamwa
Mfundo yochepetsera ndi kuyamwa mpweya ndi yakuti mpweya wam'mbuyo umakhala ndi hydrogenated, zigawo zomwe zili ndi sulfure mu mpweya wam'mbuyo zimachepetsedwa kukhala H2S, H2S yopangidwa imatengedwa mosankha ndi njira ya amine, ndipo pamapeto pake kubwezeretsedwanso kapena mpweya umachotsedwa kuti ulowe mu Claus unit kuti uzitha kuzungulira. Njira ya hydrogenation ili ndi ndalama zambiri komanso mtengo wokwera wogwirira ntchito, koma imagwiritsidwa ntchito kwambiri m'maiko ndi madera omwe ali ndi zofunikira zambiri zoteteza chilengedwe chifukwa imatha kupeza sulfure yambiri, monga kupitirira 99.8%.

2. Njira yoyamwitsa okosijeni
Njira yoyamwitsa ya oxidation ndi njira yomwe poyamba imayambitsa oxidize sulfide mu mpweya wam'mbuyo kupita ku SO2, kenako imatenga SO2 ndi yankho (kapena solvent), kenako imaibwezeretsa mu mawonekedwe a sulfate, sulfide ndi SO2.
Pali njira zambiri zamtunduwu, zomwe zambiri zimagwiritsidwa ntchito pochotsa mpweya woipa kapena kuchiza mpweya wammbuyo kuchokera ku zosungunulira ndi zomera za sulfuric acid, ndipo njira ya Wellman Lord imagwiritsidwa ntchito pochiza mpweya wammbuyo wa Claus.

3. Njira ya Claus yotenthetsera pang'ono
Ukadaulo wa Claus wotentha pang'ono umadziwika ndi Claus reaction pansi pa sulfure dew point, kotero umatchedwanso sub dew point sulfur recovery process. Claus reaction ndi njira yamphamvu yochitira zinthu pogwiritsa ntchito exothermic reaction. Chifukwa chake, kutentha pang'ono kumathandiza kuti sulfure isinthe kukhala yofanana, zomwe zingathandize kuti sulfure ibwererenso bwino. Malinga ndi ubale womwe ulipo pakati pa Claus reaction ndi unit, Claus process yotentha pang'ono ingagawidwe m'magulu awiri: Claus process yodziyimira payokha yotentha pang'ono komanso Claus process yotsika pang'ono.

4. Njira yothira mwachindunji gawo lamadzimadzi
Njira yothira madzi mwachindunji ya gawo lamadzimadzi ndi mtundu wa ukadaulo wa njira yomwe imapangitsa H2S kukhala sulfure yoyambira mwachindunji. Mfundo ya njirayi ndikuyamwa H2S mu mpweya wammbuyo ndi yankho la desulfurization, kenako ndikuyithira kuti ipange sulfure yoyambira.