Butyl Acrylate

Butyl acrylate yog cov kua tsis muaj xim tsis muaj xim, tsis muaj kuab lom nyob rau hauv dej, tab sis miscible hauv cov kuab tshuaj organic xws li ethanol thiab ether. Nws muaj ib tug muaj zog fruity tsw thiab yog ib tug flammable kua uas yog ib tug chav kawm ntawv 3 carcinogen. Qhov sib xyaw no muaj ntau yam kev siv hauv kev lag luam, suav nrog cov khoom siv raw rau acrylate roj hmab substrates thiab siab-rhiab nplaum nplaum. Tsis tas li ntawd, butyl acrylate tuaj yeem siv rau hauv kev npaj ntawm biodegradable mulch raws li ib puag ncig tus phooj ywg cov khoom uas pab txo cov pa phem.

1. Acrylic acid esterification txoj kev
(1) Cov tshuaj tiv thaiv Esterification
Muab acrylic acid thiab n-butanol rau hauv esterification reactor ntawm qhov sib piv loj ntawm 1: 1.3 kom ua tiav cov tshuaj tiv thaiv esterification, ntxiv 800-1200ppm ntawm raw khoom loj thiab 0.5-1. 5% ntawm catalyst los ua cov dej tawm cov tshuaj tiv thaiv. Thaum tsis muaj dej tawm, cov tshuaj tiv thaiv tiav, thiab cov khoom siv tshuaj tiv thaiv esterification tau txais, uas tau lees paub los ntawm qhov kev ntsuam xyuas hauv nruab nrab, qhov twg: qhov kub ntawm cov tshuaj tiv thaiv esterification thaum lub sij hawm cov tshuaj tiv thaiv yog tswj ntawm 80-90 degree , thiab lub tshuab nqus tsev kawm ntawv yog 0 06-0.08 MPa; tus inhibitor yog phenothiazine, thiab cov catalyst yog p-toluenesulfonic acid; thiab
(2) Neutralization cov tshuaj tiv thaiv
Cov khoom siv tshuaj tiv thaiv esterification saum toj no tau muab tso rau hauv qhov nruab nrab, thiab cov catalyst p-toluenesulfonic acid tau neutralized nrog sodium hydroxide puag nrog ib tug loj concentration ntawm 7-8%, thiab tus nqi ntawm lub hauv paus raug kho kom lub neutralization tau ua. mus rau pH 7. Tom qab nag lossis daus, cov theem aqueous tau sib cais, thiab cov khoom nruab nrab ntawm cov khoom tiav tau txais;
(3) Cov txheej txheem distillation
Cov khoom lag luam ib nrab ua tiav saum toj no tau muab tso rau hauv lub tshuab ua kom zoo rau distillation thiab purification, thiab butyl acrylate nrog purity ntawm 99.5% tau txais. Cov residue tom qab distillation feem ntau yog los ntawm cov khoom ntawm esterification cov tshuaj tiv thaiv, butyl acrylate dimer. Cov residue refined tau muab tso rau hauv lub lauj kaub tawg kom tawg, thiab 800-1200 ppm ntawm qhov seem ntawm qhov inhibitor thiab 2-4% ntawm cov catalyst tau ntxiv. Cov tshuaj tiv thaiv kub tau tswj ntawm 80 ~ 210 degree thiab atmospheric siab distillation tau siv. Tom qab kev tawg tiav lawm, cov khoom siv hauv qab hauv lub lauj kaub raug tshem tawm thiab kho nyob rau hauv chav tsev kub kom tau txais cov khoom siv polymer nrog cov nqi hluav taws xob siab. Tus inhibitor yog tooj liab ntsev thiab cov catalyst yog p-toluenesulfonic acid.

2. Acrylic esterization txoj kev
Cov tshuaj tiv thaiv butyl acrylate muaj ob lub reactors thiab lub cev qhuav dej ntauwd. Acrylic acid thiab butanol yog thawj esterified hauv ob lub reactors txuas nrog hauv series.PTSA (p-toluenesulfonic acid) yog siv los ua catalyst. Cov dej, butanol thiab butyl ester tsim los ntawm cov tshuaj tiv thaiv evaporate sai heev los ntawm cov reactors thiab nce mus rau hauv qab ntawm lub cev qhuav dej ntauwd. Cov tshuaj tiv thaiv-ua kua nkag mus rau hauv qhov system rov qab; cov txheej txheem rov qab muaj xws li kev tshem tawm ntauwd, ib lub tshuab ntxhua khaub ncaws thiab ib qho dej cawv rov qab ntauwd. Hauv cov txheej txheem no, PTSA hauv cov tshuaj tiv thaiv cov kua yog thawj zaug muab rho tawm thiab rov ua dua tshiab nrog dej, thiab tom qab ntawd cov PTSA residual thiab cov kua qaub uas tsis muaj tshuaj acrylic yog neutralized nrog alkali tov; cov dej khib nyiab tsim los ntawm txhua lub cuab yeej rov qab ua ke nrog cov kua hauv qab ntawm lub tshuab ntxhua khaub ncaws kom rov qab tau butanol thiab butyl ester hauv cov dej cawv rov ua dua tshiab, thiab tom qab ntawd cov kua ntau lawm nkag mus rau hauv cov txheej txheem refining; lub refining system muaj de-alcoholization ntauwd thiab lub refining ntauwd. Lub kaw lus rov ua haujlwm tswj cov tshuaj tiv thaiv cov kua ua kua, piv txwv li crude butyl ester, uas kuj muaj cov impurities xws li butanol, dej, thiab cov khoom hnyav. Cov impurities no yuav raug tshem tawm hauv qhov system kom tau butyl acrylate nrog purity ntau dua 99.0%.

3. Aldehyde condensation
• Cov khoom siv raw yog n-butyl acetate thiab formaldehyde. Tom qab cua sov thiab gasification, nws nkag mus rau hauv cov roj-khoom-taw txaj reactor chav tsev. Cov khoom ntawm cov tshuaj tiv thaiv mus ncaj qha mus rau sab distillation rau kev sib cais. Lub distillate undergoes concentration thiab theem sib cais. Tom qab cov theem sib cais, ib feem ntawm cov roj theem rov qab mus rau hauv qab ntawm lub txaj ruaj khov kom koom nrog cov tshuaj tiv thaiv dua, thiab lwm qhov ntawm cov roj theem ntws rov qab mus rau sab saum toj ntawm cov distillation kem. Qhov qis
aqueous theem yog tso tawm rau kev kho mob, thiab cov khoom siv crude nrog 92-95% cov ntsiab lus tau txais los ntawm hauv qab ntawm kab distillation.
• Cov ntsiab lus ntawm n-butyl acetate yog 97-99.5%; formaldehyde yog siab concentration ntawm formaldehyde, thiab molar piv ntawm formaldehyde rau n-butyl acetate yog 2:1-5:1.
• Lub txaj kub ntawm cov roj-cov khoom ruaj khov reactor chav tsev tau tswj ntawm 360 ~ 420 degree, thiab cov ntsiab lus ntawm butyl acrylate hauv qhov paug tawm yog 60 ~ 70%.
• Qhov kub ntawm sab hauv qab ntawm kab distillation yog 140-150 degree, qhov kub hauv kem yog 100-105 degree, thiab qhov kub ntawm sab saum toj ntawm kem tau tswj ntawm 90-95 degree . 20%.

Kaitai Petrochemical tau tsim nyob rau hauv Lub Xya hli ntuj 2004. Nrog rau kev txhawb zog ntawm tag nrho cov sectors ntawm lub zej zog, nws tsim ib tug subsidiary nyob rau hauv Gaoqing County nyob rau hauv 2011 thiab officially muab tso rau hauv ntau lawm nyob rau hauv Lub kaum hli ntuj 2013. Txij li thaum 2018, Kaitai tau tshiab muab tso rau hauv lub lag luam 180000 tons high- kawg cov roj dawb ua haujlwm ntawm nws cov chaw haujlwm. Kaitai Petrochemical tau tsim los ua ib lub tuam txhab tshuaj lom neeg sib txawv.
Shandong kaitai yog nyob rau hauv zoo nkauj Qi ancient capital- Zibo, uas nyiam superior geographic txoj hauj lwm thiab yooj yim kev khiav hauj lwm- sab qaum teb mus rau Huanghe River, sab hnub tuaj mus rau Qingdao chaw nres nkoj, thiab sab qab teb mus rau lub tshav dav hlau Jinan, Shandong Kaitai yeej tsis tso tseg nws kev rau siab pab cov neeg muas zaub, thiab muag. acrylic acid esters rau feem ntau ntawm Tuam Tshoj thiab txawv teb chaws. Kaitai yog ib qho kev lag luam ua ke nrog acrylic acid, acrylic ester thiab dawb roj ntau lawm.
Shandong Kaitai Petrochemical ua raws li kev lag luam tenet ntawm "kev nrhiav kev txhim kho zoo ntawm kev lag luam, muab nqi zog rau cov tswv lag luam, "Nco ntsoov txhim kho qhov kev zoo siab ntawm cov neeg ua haujlwm thiab coj txoj kev ntawm kev vam meej", siv kev tswj hwm hnub ci, txhim kho nrog cov neeg siv khoom, loj hlob nrog cov neeg ua haujlwm. . Ua kom muaj lub luag haujlwm ntawm kev sib raug zoo thiab tsim kom muaj kev hwm kev lag luam, ua kom muaj lub luag haujlwm ntawm kev lag luam, tsim kev lag luam nrog cov txiaj ntsig zoo thiab kev cia siab, ua kom cov neeg ua haujlwm nplua nuj ua ke, muaj nyiaj tau los ntau dua, kev noj qab haus huv zoo dua, muaj txiaj ntsig ntau dua thiab muaj meej mom, tsim kom muaj kev zoo siab, nyob zoo dua thiab paub txog qhov zoo. npau suav ntawm Kaitai.
Shadong Kaitai muaj ntau tshaj 1000 tus neeg ua haujlwm, suav nrog 200 nrog cov npe nruab nrab thiab cov laus tshaj lij. Shandong Kaitai tau tsim nyog los ua lub teb chaws "peb lub tshuab" ntawv pov thawj kev lag luam; Shandong acrylate Engineering Technology Research Center; High tech enterprises nyob rau hauv Shandong xeev; Shandong ncaj ncees enterprise; "Kaitai" acrylic acid yog cov khoom lag luam nto moo hauv xeev Shandong. Hauv 2019, lub zog muaj zog ntawm Kaitai ranked 42nd ntawm 100 lub tuam txhab saum toj kawg nkaus hauv Zibo.