Chipinda chochotsera mpweya wolemera wa hydrocarbon ndi chipangizo chochotsera ndi kusefera cha mercury cha fakitale ya LNG

Chida chochotsera mpweya wolemera wa hydrocarbon
1）Ntchito ya dongosolo
Ma hydrocarbon olemera ndi ma hydrocarbon onunkhira mu mpweya wachilengedwe nawonso amauma kutentha kochepa, kotero ayenera kuchotsedwa. Chipangizochi chimagwiritsa ntchito njira yotsatsira mpweya wogwiritsidwa ntchito pochotsa ma hydrocarbon olemera ndi ma hydrocarbon onunkhira.

Mu gawoli, nsanja ziwiri zomwezo zoyatsira madzi zimagwiritsidwa ntchito kuyamwa ma hydrocarbon olemera ndi ma hydrocarbon onunkhira. Njira ya TSA imagwiritsidwa ntchito kusanthula ma hydrocarbon olemera ndi ma hydrocarbon onunkhira mu kaboni woyatsidwa. Nthawi yomweyo, njira yoyatsira madzi imagwiritsidwa ntchito kuyika ndikulekanitsa ma hydrocarbon olemera ndi ma hydrocarbon onunkhira omwe achotsedwa ku adsorbent.

2）Magawo a kapangidwe
Mphamvu yogwiritsira ntchito mpweya wothira chakudya 10 × 104Nm3/tsiku
Kuthamanga kwa madzi 4.4MPa.G
Malo opangidwira mpweya wolemera wa hydrocarbon mu mpweya wodyetsa ≤ 1000ppmv
Kutentha kwa madzi ~ 40 ℃
Kuthamanga kwa kukonzanso 4.2MPa.G
Kutentha kwa kusinthika 180 ~ 280 ℃
Mafuta osinthira kutentha obwezeretsera kutentha kwambiri
Kuchuluka kwa hydrocarbon yolemera ndi hydrocarbon yonunkhira mu mpweya woyeretsedwa kuyenera kukhala ≤ 10ppm motsatana

3） Kuchuluka kwa kusintha
Kulamulira katundu ndi 50 ~ 110%.

4） Kufotokozera kwa kayendedwe ka njira
Mpweya wachilengedwe wochokera ku chipangizo choumitsira mpweya wothira mafuta umalowa koyamba kuchokera pamwamba pa nsanja yochotsera ma hydrocarbon olemera kudzera mu valavu yowongolera kuthamanga kwa mpweya. Mpweya wachilengedwe ukachotsedwa kudzera mu bedi loyatsidwa ndi mpweya, umatuluka pansi pa nsanja yochotsera ma hydrocarbon olemera. Mpweya wachilengedwe ukachotsedwa, kuchuluka kwa hydrocarbon wonunkhira mu mpweya wachilengedwe ndi ≤ 10ppmv, kenako umalowa mu chipangizo chochotsera ndi kusefa fumbi cha mercury.

Chipinda chochotsera ma hydrocarbon olemera chili ndi nsanja ziwiri zochotsera ma hydrocarbon olemera. Mkati mwa nthawi yodziwira ya adsorption, imodzi imakhala mu mkhalidwe wa adsorption kuti ichotse ma hydrocarbon olemera mu mpweya wodyetsa, ndipo yachiwiri imakhala mu mkhalidwe wa resorption (kutentha ndi kuzizira) kuti ichotse ma hydrocarbon onunkhira mu activated carbon. Pamene nsanja yochotsera ma hydrocarbon olemera mu mkhalidwe wa adsorption yadzaza, sinthani ku nsanja yochotsera ma hydrocarbon olemera yomwe imatsiriza resorption. Nsanja yochotsera ma hydrocarbon olemera odzaza imatsatiridwa ndi nthawi yobwezeretsa kutentha kenako kuziziritsa.

Mpweya wobwezeretsa umapezeka kutsogolo kwa valavu yowongolera kuthamanga kwa mpweya. Mpweya wobwezeretsa umalowa mu uvuni wotenthetsera mpweya wobwezeretsa ndipo umatenthedwa kufika pa 220 ~ 280 ℃. Mpweya wotentha ndi wouma umachotsa ma hydrocarbon onunkhira mu kaboni woyambitsidwa kuchokera pamwamba mpaka pansi kudzera mu nsanja yochotsera ma hydrocarbon olemera. Mpweya wobwezeretsa wokhala ndi ma hydrocarbon onunkhira kuchokera ku nsanja yochotsera ma hydrocarbon olemera mu mkhalidwe wobwezeretsa (kutentha) umalowa mu choziziritsira cha mpweya wobwezeretsa kuti uzizire mosalekeza, kenako umalekanitsa ma hydrocarbon onunkhira omwe angakhale mu cholekanitsa, ndipo madzi osungunuka amalowa mu cholekanitsa cha mpweya wamafuta.

Mpweya wochokera pamwamba pa cholekanitsa mpweya wobwezeretsanso umalowa mu nsanja ya adsorption mu mkhalidwe wa adsorption pamodzi ndi mpweya wachilengedwe womwe umalowa kumbuyo kwa valavu yowongolera kuthamanga kwa mpweya.

Mpweya wodyetsa chipangizo chochotsera ndi kusefera cha mercury
1） Kufotokozera kwa njira
Mpweya wachilengedwe wochokera ku chipangizo chowumitsa mpweya ndi chochotsera ma hydrocarbon ambiri umalowa mu adsorber yothandizidwa ndi sulfure. Mercury imachitapo kanthu ndi sulfure yomwe ili pa sulfure yomwe imathandizidwa ndi sulfure kuti ipange mercury sulfide, yomwe imakhudzidwa ndi carbon yothandizidwa, kuti ikwaniritse cholinga chochotsera mercury. Kuchuluka kwa mercury mu mpweya wachilengedwe kuchokera ku mercury remover ndi kochepera 0.01μg/Nm3。
Chochotsa mercury chimodzi chimayikidwa, ndipo sulfure yomwe yalowetsedwa mu activated carbon imasinthidwa malinga ndi momwe zapezedwera.
Chipangizo chosefera chili ndi fyuluta, yomwe imatha kusinthidwa malinga ndi deta ya kukana kuti ikwaniritse cholinga chosefera sieve ya molecular ndi fumbi la carbon lomwe layambitsidwa.
Pambuyo pochotsa fumbi, tinthu ta fumbi mu mpweya wodyetsa timakhala tosakwana 10μm.
Zipangizo zazikulu ndi chochotsera mercury ndi fyuluta ya fumbi.

2）Magawo a kapangidwe
Mphamvu yogwiritsira ntchito mpweya wodyetsa chakudya: 10 × 104Nm3/tsiku
Kuthamanga kwa ntchito: 4.4MPa.G
Kutentha kwa kuyamwa: 45 ℃
Kuchuluka kwa Hg mu mpweya woyeretsedwa ≤ 0.01μg/Nm3
Fumbi lochuluka mu mpweya woyeretsedwa ≤ 5μm