Kusankha njira yothira madzi a gasi wachilengedwe pa fakitale ya LNG
Pakadali pano, pali njira zitatu zazikulu zopezera madzi oundana m'munda wa kusungunula mpweya wachilengedwe: njira yosungira madzi oundana, njira yosakaniza yosungira madzi oundana, ndi njira yosungira madzi oundana.
A) Njira yoziziritsira ya Cascade
Kuzizira kwa cascade ndi kuzizira kwa magawo atatu komwe kumakhala ndi ma refrigerant monga propane (kapena propylene), ethane (kapena ethylene), methane (kapena nayitrogeni) (kutentha komwe kumatuluka ndi - 100 °F, - 121 °F, - 256 °F, motsatana). Kuzizira kwa siteji kumathandiza mpweya wachilengedwe kusinthana kutentha ndi ma refrigerant ofanana mu kutentha kosiyanasiyana, motero kumaziziritsa ndikupangitsa kuti ukhale wofewa.
B) Njira yosakanikirana yoziziritsira
The ndondomeko yoziziritsira yosakanikirana ndi njira yomwe imagwiritsa ntchito chisakanizo cha N 2 ndi C 1 mpaka C 5 ma hydrocarbon ngati chosungiramo zinthu zozungulira.
C) Njira yowonjezera nthawi yozizira
Kuzizira kwa expander kumatanthauza kuzizira kwa Crowder cycle komwe firiji yamphamvu imakula mwachangu kudzera mu turbo expander kuti ikwaniritse kusungunuka kwa mpweya wachilengedwe. Ngakhale mpweya umakula ndikuzizira mu expander, umatha kutulutsa ntchito, zomwe zingagwiritsidwe ntchito kuyendetsa compressor panthawiyi.
Malinga ndi ma refrigerant osiyanasiyana, nthawi yoziziritsira ya expander ingagawidwe m'magulu awa: nthawi yoziziritsira ya nayitrogeni expander, nthawi yoziziritsira ya nitrogen-methane expander, nthawi yoziziritsira ya expander ya gasi wachilengedwe.
D) Kuyerekeza kwa njira zitatuzi pogwiritsa ntchito ukadaulo ndi zachuma
Kugwiritsa ntchito mphamvu kwa kayendedwe ka firiji ya cascade kwaikidwa ngati 1, kufananiza kwa kayendedwe ka firiji kosiyanasiyana kwalembedwa mu Table 5.1-2, ndipo makhalidwe a kayendedwe ka firiji kosiyanasiyana akuyerekezeredwa mu Table 5.1-3.
Gome 5.1-2 Kuyerekeza kwa Kuchita Bwino kwa Ma Refrigeration Amitundu Yosiyanasiyana
| Njira yosungira mufiriji | Kugwiritsa Ntchito Mphamvu Poyerekeza ndi Kuzizira kwa Cascade |
| kuzungulira kwa firiji ya cascade | 1.00 |
| ndondomeko yoziziritsira yosakanikirana | 1.15 |
| R22 Kuziziritsa N 2 -CH 4 Kukulitsa Nthawi Yozizira | 1.35 |
Gome 5.1-3 Kuyerekeza kwa makhalidwe osiyanasiyana a nthawi yoziziritsira
| chizindikiritso | kuzizira kwa madzi osefukira | firiji yosakanikirana | Kukulitsa firiji |
| kuchita bwino | okwera | pakati | Zochepa |
| Kuvuta | okwera | pakati | pakati |
| Zipangizo zazikulu zoyendetsera | Ma compressor atatu | kompresa imodzi | kompresa + chofutukula |
| mtundu wa chosinthira kutentha | chipsepse cha mbale | Chipsepse cha mbale kapena chubu chovulala | chipsepse cha mbale |
| malo osinthira kutentha | chachikulu | chachikulu | Kakang'ono |
| kusinthasintha | okwera | pakati | pakati |
| gwero la firiji | Mafiriji atatu amafunika | Ma refrigerant atatu mpaka asanu ndi limodzi amafunika, ndipo refrigerant ikhoza kuchotsedwa mwachindunji kuchokera ku mpweya wa Feed | Chosungiramo firiji chimodzi chokha chikufunika: Nayitrogeni, yomwe imatha kuchotsedwa mumlengalenga |
| sungani ndalama | okwera | pakati | Wokwera pang'ono |
Poganizira bwino zinthu monga ndalama zomwe zagwiritsidwa ntchito, kugwiritsa ntchito mphamvu, kugwiritsa ntchito ndi kukonza, njira yothira madzi ya chipangizochi imagwiritsa ntchito njira yoziziritsira yosakanikirana.
Rongteng imagwira ntchito yokonza zitsime za gasi, kuyeretsa gasi lachilengedwe, kubwezeretsa LPG, fakitale ya LNG ndi zachilengedwe. seti ya jenereta ya gasi.
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