Ntxiv rau dej, Feem ntau ntawm cov xov xwm siv hauv cov phaj hloov pauv cua sov yog cov kua qaub, cov kua nplua nuj, sodium hydroxide, sulfuric acid thiab lwm yam tshuaj lom neeg, uas yooj yim ua rau xeb ntawm lub phaj thiab o thiab laus ntawm gasket.
Phaj thiab gasket yog cov ntsiab lus tseem ceeb ntawm cov phaj cua sov exchanger, Yog li ntawd, kev xaiv cov phaj thiab gasket khoom siv yog qhov tseem ceeb heev.
Kev xaiv cov khoom siv phaj ntawm cov phaj kub exchanger:
| Dej huv, dej ntws, roj noj tau, roj av thiab lwm yam xov xwm | stainless hlau (AISI 304, AISI 316, thiab lwm yam). |
| dej hiav txwv, brine, salinization thiab lwm yam xov xwm | titanium thiab titanium palladium (Ti, Ti-Pd) |
| Dilute sulfuric acid, dilute sulfur ntsev aqueous kua, inorganic aqueous kua thiab lwm yam xov xwm | 20Cr, 18Ni, 6Mo (254SMO) thiab lwm yam hlau sib xyaw |
| Kub thiab siab concentration caustic soda nruab nrab | Ni |
| Cov kua qaub sulfuric uas muaj concentrated, hydrochloric acid thiab phosphoric acid nruab nrab | Hastelloy hlau (C276, d205, B20) |
Kev xaiv cov khoom siv ntawm gasket rau phaj kub exchanger:
Cov neeg feem coob paub tias cov roj hmab sealing gaskets yog cov ntaub ntawv siv feem ntau, xws li EPDM, roj hmab nitrile, roj hmab hydrogenated nitrile, fluororubber thiab lwm yam.
| EPDM | Qhov kub ntawm kev pabcuam yog - 25 ~ 180 ℃. Nws yog qhov tsim nyog rau cov kua nruab nrab superheated dej, pa, atmospheric ozone, cov roj lubricating uas tsis yog roj av, cov kua qaub tsis muaj zog, cov hauv paus tsis muaj zog, ketone, cawv, ester, thiab lwm yam. |
| NBR | Qhov kub ntawm kev pabcuam yog - 15 ~ 130 ℃. Nws yog qhov tsim nyog rau ntau yam khoom siv roj av xws li cov kua nruab nrab, roj roj teeb, roj lubricating, roj tsiaj thiab roj zaub, dej kub, dej ntsev, thiab lwm yam. |
| HNBR | Qhov kub ntawm kev pabcuam yog - 15 ~ 160 ℃. Nws yog qhov tsim nyog rau cov kua nruab nrab kub dej, roj nyoos, roj sulfur thiab cov organic sulfur-muaj cov tshuaj sib xyaw, qee cov roj hloov pauv cua sov, cov tub yees tshiab R134a thiab ib puag ncig ozone. |
| FKM | Qhov kub ntawm kev pabcuam yog - 15 ~ 200 ℃. Nws yog qhov tsim nyog rau cov kua nruab nrab, xws li concentrated sulfuric acid, caustic soda, roj hloov pauv cua sov, roj roj cawv, roj roj kua qaub, pa kub siab, dej chlorine, phosphate, thiab lwm yam. |
Lub sijhawm tshaj tawm: Cuaj hlis-16-2021