Kws tshuaj intermediates, tshuaj intermediates? Dab tsi yog nrab?

 

Intermediates yog hom tseem ceeb ntawm cov khoom lag luam tshuaj zoo, nws lub ntsiab lus yog ib hom "nruab nrab", yog cov khoom lag luam nyob hauv nruab nrab ntawm cov khoom lag luam, xws li tsim cov khoom lag luam tuaj yeem tsim tawm los ntawm cov tshuaj nruab nrab, cov nqi txuag, los ntawm dav siv hauv chaw tsim tshuaj, tshuaj tua kab, xim, dyes thiab cov khoom siv hluavtaws. Hauv thaj teb ntawm cov tshuaj, nruab nrab yog qhov tseem ceeb txuas ntawm kev kho mob kev lag luam, hauv cov txheej txheem tshuaj sib tov rau qee cov tshuaj siv tshuaj thiab cov khoom siv tshuaj, hauv ib lo lus, siv nyob rau hauv kev tsim cov khoom lag luam tshuaj.

 

Thiab tshuaj tua kab intermediates, tseem yuav yog ob lossis ntau qhov khoom siv ua liaj ua teb ua ke hauv nruab nrab ntawm nruab nrab. Niaj hnub no, peb feem ntau, tshuaj tua kab intermediates.

农

Cov tshuaj tua kab yog siv los tiv thaiv, tshem tawm lossis tswj kev phom sij ntawm kev ua liaj ua teb, kab mob hauv hav zoov, kab tsuag, nyom thiab lwm yam kab mob ua kom muaj mob thiab muaj lub hom phiaj tswj kev loj hlob ntawm cov nroj tsuag, kab, tshuaj lom neeg lossis lwm yam tshuaj lom neeg uas tau los ntawm cov roj ntsha, ib yam khoom lossis sib xyaw ua ke ntawm ntau yam thiab lawv npaj. Hauv kev paub dav, tshuaj tua kab mus rau kev tiv thaiv qoob loo hom tshuaj tua kab thiab kev tiv thaiv cov qoob loo tshuaj tua kab, tshuaj tiv thaiv kab mob muaj tshuaj tua kab raws li kev siv tshuaj tua kab, tshuaj tua kab, fungicides thiab cog kev cog qoob loo, thiab lwm yam, feem ntau yog siv hauv kev tiv thaiv cov qoob loo; Ntawm kev tiv thaiv cov qoob loo ntawm cov tshuaj tua kab xws li cov yaum yoov, tshuaj tua yoov, khoom siv rau kev noj qab haus huv, thiab lwm yam, feem ntau yog siv hauv tsev tshuaj, kev noj qab haus huv, kev tswj hwm hav zoov, lub caij muaj kev lag luam, kev tua kab tsuag, tshuaj, kev txuag ntoo, kev tiv thaiv nyom thiab lwm cov teb.

Qhov kawg ntawm kev lag luam tshuaj tua kab hauv kev lag luam chemical tshuaj lag luam, zwm rau kev lag luam tshuaj lom neeg zoo. Tshuaj tua kab kev lag luam cia cov roj tawm / tshuaj lom neeg thiab lwm yam kev lag luam, txhawm rau muab cov ntaub ntawv nyoos rau kev lag luam tshuaj tua kab; Kev lag luam hauv nruab nrab feem ntau suav nrog intermediates, kev siv txuj ci, kev npaj (3 daim; Rau kev thov siv ua liaj ua teb thiab tsis muaj kev ua liaj ua teb. Kev siv tshuaj tua kab kev lag luam s ntawm cov cuab yeej thev naus laus zis, r & d siv nyiaj loj, kev voj voog yog ntev, kev pheej hmoo thiab qis tiav kev vam meej. thiab thaj chaw liaj teb kom txo tau qhov kev tsis sib haum xeeb, kev siv tshuaj tua kab kom dav txhawm rau txhawm rau txhim kho cov qoob loo rau ib cheeb tsam yog qhov tseem ceeb tshaj plaws los daws cov teeb meem ntawm cov zaub mov.

Cov tshuaj tua kab sib txawv yuav tsum muaj cov tshuaj nruab nrab sib txawv hauv cov txheej txheem ntau lawm. Kev ua liaj ua teb ua raw khoom los ua khoom lag luam, kuj yog kev sib txuas ntawm ob lossis ntau yam tshuaj nyob hauv nruab nrab ntawm nruab nrab. Hauv tshuaj tua kab tuaj yeem nkag siab raws li tus neeg sawv cev synergistic, tseem hu ua organic intermediates. Keeb kwm hais txog kev siv roj av roj av lossis cov roj av ua cov khoom siv raw cov hluavtaws, zas xim, roj hmab, tshuaj, xws li cov khoom siv yas, cov roj hmab nrawm hauv cov txheej txheem ntawm cov khoom siv tshuaj, tsim nyob hauv nruab nrab ntawm cov khoom.

Intermediates nyob rau hauv cov synthesis feem ntau yog ua rau hauv cov tshuaj tiv thaiv kettle, kev sib cais thiab kev ua kom huv ntawm cov intermediates rau, feem ntau hauv kev siv tshuab. Cov tshuaj tua kab tsuag nruab nrab thiab cov tshuaj tua kab mob chloroform yog tshuaj lom neeg cov lag luam sib koom ua ke, cov txheej txheem kev ua haujlwm ib txwm muaj feem siv cov kem distillation, hom kev ua haujlwm no nyuaj, tsis yooj yim ua kom tsawg dua, txuag hluav taws xob yog qhov loj, yog li nrog kev sib sib zog nqus ntawm kev ua haujlwm thiab kev nce qib ntawm cov thev naus laus zis ntau lawm, cov lag luam feem ntau pib hloov kho dua tshiab, thiab xaiv qhov kev ua haujlwm zoo dua. Cov kuab tshuaj tawm txoj kev tau dhau los ua qhov kev tshem tawm ntawm cov khoom siv tshuaj lom neeg ntawm chav ua haujlwm tseem ceeb. Cov kuab tshuaj tawm yog xaiv cov khoom haum, cov khoom siv ua kua sib xyaw ua ke nrog tus neeg sawv cev tawm, cov khoom siv ntawm cov organic theem hloov ntawm cov kua mus rau hauv tus neeg saib xyuas, cov organic theem tau muab rho tawm tom qab ob theem sib cais. Txoj kev no yog qhov yooj yim, high extraction efficiency, extraction hnyav yog tus nqi pheej yig, cov kuab tshuaj tawm tuaj yeem rov ua tiav tib lub sijhawm, cov txiaj ntsig zoo kev txuag nqi.

 


Lub sij hawm tshaj tawm: Sep-11-2020