1. Molecular Sieve (Zeolite): Crystalline silicate ntawm txhuas thiab silicon, nrog cov pore diameters tsis tu ncua (3A / 4A / 5A / 13X), molecular sieving nyhuv, muaj peev xwm tsuas yog adsorbing molecules me dua lub pore txoj kab uas hla, thiab xaiv adsorption yog nws qhov tshwj xeeb kom zoo dua.
2. Activated Alumina: Porous -Al₂O₃, amorphous disordered pores nrog dav pore loj faib, tsis muaj peev xwm sieving; Qhov zoo tshaj plaws: muaj zog txhua yam muaj zog, tiv taus cov kua dej yaig, thiab tsis ua rau hmoov av.
3. Silica Alumina (Alumina Silica Gel): Amorphous mSiO₂·nAl₂O₃, silica gel tov nrog alumina, cais raws li hloov silica gel; tsis tu ncua crystalline pore raws, tsis muaj molecular sieving muaj peev xwm ntawm molecular sieves; Piv nrog rau cov silica gel zoo tib yam, nws muaj peev xwm tiv taus qhov kub thiab txias, thiab muaj peev xwm nqus dej ntau dua. Muaj dej- tiv taus W silica alumina gel uas tuaj yeem nkag mus rau hauv cov kua dej ncaj qha. Nws yog feem ntau siv nyob rau hauv natural gas teeb hydrocarbon tshem tawm.
Activated alumina: Ua ntej- txheej tiv thaiv, qhuav qhuav
Compressed cua, refinery gas, PSA oxygen ntau ntauwd - Cov txheej hauv qab yog ntim nrog nws, cuam tshuam rau pem hauv ntej -kawg condensate dej thiab siab -load dej vapor, tiv thaiv sab sauv - txheej molecular sieves los ntawm ntub dej thiab pulverized los ntawm cov kua dej; lub tshuab desiccant yog tus qauv nruab.
Silica-alumina gel: Cov khoom siv tshwj xeeb rau kev ntxuav cov pa roj
Nws yog feem ntau siv rau hauv kev lag luam roj av: ziab cov pa roj thaum lub sij hawm adsorbing thiab rov qab tau C5 + lub teeb hydrocarbons (natural gasoline) hauv cov pa roj; resistant rau siab - kub ua hauj lwm tej yam kev mob; resistant rau dej; W-type silica- alumina gel yog siv los ua cov txheej txheem tiv thaiv dej hauv qab; Nws tsis tuaj yeem siv rau kev xaiv ziab ntawm alkenes, vim nws tsis muaj kev tshuaj ntsuam xyuas ntawm molecular sieves.
Molecular sieve: Sib sib zog nqus -kum tob dehumidification txheej
Activated alumina / silica-alumina gel tau ntim tom qab qhov no, kom lub cev qhuav dej tob;
- 3A: Ethylene, propylene, cracking gas, tsuas yog nqus dej, tsis adsorb alkenes (alumina thiab silica-alumina gel tsis tuaj yeem ua qhov no).
- 13X: Ua ntej-purification rau huab cua sib cais, ib txhij tshem dej + CO₂.
CHEMXIN tau koom nrog Molecular Sieve txij li xyoo 2002, dhau 23 xyoo ntawm kev paub hauv chaw tsim khoom, kev tsim kho thiab kev taw qhia kev teeb tsa. Cia peb sib qhia ntxiv thiab kawm ua ke.
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