Cov Yam Tseem Ceeb Tswj Xyuas Hauv Kev Tsim Khoom Bisphenol A
Hais txog qhov huv ntawm cov khoom siv raw, phenol thiab acetone, ua cov khoom siv tseem ceeb rau kev tsim bisphenol A, yuav tsum tau tswj hwm lawv qhov huv. Qhov huv ntawm phenol yuav tsum tsis pub tsawg dua 99.5%, thiab qhov huv ntawm acetone yuav tsum ncav cuag ntau dua 99%. Cov khoom siv raw uas muaj qhov huv siab tuaj yeem txo qhov cuam tshuam ntawm cov khoom tsis huv rau ntawm cov tshuaj tiv thaiv thiab xyuas kom meej tias cov tshuaj tiv thaiv ua tiav zoo.
Kev tswj qhov kub ntawm cov tshuaj tiv thaiv yog qhov tseem ceeb heev. Qhov kub ntawm cov tshuaj tiv thaiv condensation feem ntau yog nyob nruab nrab ntawm 40 - 60 ° C. Hauv qhov kub no, qhov nrawm ntawm cov tshuaj tiv thaiv thiab kev xaiv cov khoom tuaj yeem ncav cuag qhov sib npaug zoo. Qhov kub uas siab dhau lossis qis dhau yuav cuam tshuam rau qhov tsim tawm thiab zoo ntawm bisphenol A BPA. Kev ua haujlwm thiab kev xaiv ntawm cov catalyst txiav txim siab qhov kev taw qhia ntawm cov tshuaj tiv thaiv. Cov tshuaj tiv thaiv acidic feem ntau siv xws li sulfuric acid xav tau kev siv lawv cov concentration thiab koob tshuaj kom raug. Feem ntau, qhov concentration ntawm sulfuric acid hloov pauv hauv qee qhov ntau, thiab koob tshuaj yog ib feem pua ​​​​​​ntawm tag nrho cov khoom siv raw, yog li kom ntseeg tau tias cov catalyst ua haujlwm zoo tshaj plaws. Kev siab ntawm cov tshuaj tiv thaiv kuj cuam tshuam rau bisphenol A BPA tsim tawm. Qhov ntau ntawm qhov siab tsim nyog yog 0.5 - 1.5 MPa. Ib puag ncig siab ruaj khov pab tswj kev ruaj khov ntawm cov tshuaj tiv thaiv thiab txhawb kev hloov pauv loj thiab kev nce qib ntawm cov tshuaj tiv thaiv. Qhov piv ntawm cov khoom siv yog ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov tshuaj tiv thaiv. Qhov piv ntawm phenol rau acetone feem ntau yog tswj hwm ntawm 2.5 - 3.5: 1. Ib qho piv txwv zoo tuaj yeem ua rau cov khoom siv raw teb tag nrho, ua rau cov txiaj ntsig ntawm bisphenol A BPA nce ntxiv, thiab txo cov khoom seem.

Kev hloov kho Bisphenol A BPA ua rau lub zog kho tshuab zoo dua, khawb thiab hnav tsis kam, npaj txhij los daws cov teeb meem nyuaj.

Yog tias koj xav yuav cov khoom siv tshuaj uas ntseeg tau, thov nrhiav Shandong Pulisi Chemical Co., Ltd., uas tsom mus rau "tshuaj zoo" thiab tau ua haujlwm tau 20 xyoo.