Kodi njira yopangira bisphenol A ndi yotani?

Kuyerekeza kwa Resin Method ndi Hydrogen Chloride Method Technologies
(1) Ubwino wa njira yopangira utomoni wa bisphenol A bpa: ① Palibe chifukwa chogwiritsa ntchito zida zodula zolimbana ndi dzimbiri, ndipo ndalama zomwe zimagwiritsidwa ntchito pazida ndizochepa; ② Madzi otayira ochepa amapangidwa; ③ Chothandizira sichifunika kubwezedwa ndi kubwezeretsedwanso.
(2) Ubwino wa njira ya hydrogen chloride ya bisphenol A bpa: ① Chothandizira chimakhala ndi ntchito zambiri, kutentha kwa reaction kumakhala kochepa, ndipo zinyalala zochepa zimapangidwa; ② Kuchuluka kwa kusintha kwa zinthu zopangira kumakhala kwakukulu; ③ Acetone yosayatsidwa sikufunika kubwezeretsedwanso; ④ Kuchuluka kwa kayendedwe ka phenol mu reactor ndi kochepa kwambiri (bedi silinatsekeke), ndipo ortho ndi para isomers mu reactor sizimasungunuka; ⑤ Sikufunika kubwezeretsanso, zomwe zimachepetsa ndalama zogulira ndi ndalama zogwirira ntchito; ⑥ Kuchuluka kwa zinthu zopangidwa ndi reactor ndi kochepa, ndipo palibe chifukwa chogwiritsa ntchito chipangizo cholemera chosinthira zigawo.
Pofuna kupeza ubwino wa ntchito ya catalyst ndi kusankha njira ya hydrogen chloride, njira ya ion-exchange resin yawongolera catalyst, ndipo condensation reaction imachitika pa chiŵerengero chachikulu cha phenol-ketone. Phenol ndi reactant komanso reaction solvent, zomwe zimapangitsa kuti condensation reaction isamalidwe bwino. Zodetsa zomwe zili mu condensation reaction zitha kulekanitsidwa kudzera mu crystallization process kuti mupeze zinthu zapamwamba za bisphenol A bpa. Ponena za kuchuluka kwa zida, resin method ndi yofanana ndi hydrogen chloride method. Nthawi yomweyo, njira ya ion-exchange resin method yasintha zofooka za hydrogen chloride method method, ili ndi dzimbiri lofooka pazida, ndipo imapangitsa kuti ntchito ya system iyende bwino popanda kuwonjezera ndalama zogulira. Chifukwa chake, njira ya ion-exchange resin yopangira bisphenol A bpa yakhala njira yayikulu yopangira ukadaulo ndi chitukuko.