M-cresol, tseem hu ua m-methylphenol lossis 3-methylphenol, yog cov organic compound nrog cov tshuaj formula C7H8O. Nyob rau hauv chav tsev kub, nws feem ntau yog cov xim tsis muaj xim lossis lub teeb daj, me ntsis soluble hauv dej, tab sis soluble hauv cov kuab tshuaj xws li ethanol, ether, sodium hydroxide, thiab muaj cov nplaim taws. Qhov kev sib xyaw no muaj ntau yam kev siv hauv thaj tsam ntawm cov tshuaj zoo.

Tshuaj tua kab: Raws li qhov nruab nrab thiab cov khoom siv raw ntawm cov tshuaj tua kab, m-cresol yog siv ntxiv rau hauv kev tsim cov tshuaj tua kab ntau yam pyrethroid, xws li fluazuron, cypermethrin, glyphosate, thiab dichlorophenol, los ntawm kev tsim cov tshuaj tua kab m-phenoxybenzaldehyde. Hauv kev lag luam tshuaj, m-cresol muaj ntau hom kev siv thiab tuaj yeem siv los ua cov khoom siv raw los tsim ntau yam tshuaj, xws li tshuaj tiv thaiv kab mob, tshuaj tiv thaiv kab mob, thiab lwm yam. Tsis tas li ntawd, m-cresol kuj tseem siv tau los ua cov tshuaj tiv thaiv kab mob. npaj cov cuab yeej kho mob thiab tshuaj tua kab mob. Kev lag luam tshuaj zoo: m-cresol tuaj yeem siv los tsim ntau yam khoom siv tshuaj zoo. Piv txwv li, nws tuaj yeem cuam tshuam nrog formaldehyde los tsim m-cresol formaldehyde resin, uas yog ib qho tseem ceeb ntawm cov tshuaj tua kab nruab nrab thiab tuaj yeem siv los tsim cov tshuaj tua kab thiab tshuaj tua kab. Tsis tas li ntawd, nws tseem tuaj yeem siv los tsim cov tshuaj tua kab mob antioxidant, dyes, spices, thiab lwm yam kev lag luam: m-cresol kuj siv tau los npaj cov khoom siv, xws li ion exchange resins, adsorbents, thiab lwm yam.

 1,Txheej txheem cej luam ntawm cov txheej txheem ntau lawm thiab txawv teb chaws thiab thoob ntiaj teb

Cov txheej txheem ntau lawm ntawm meta cresol tuaj yeem muab faib ua ob pawg: txoj kev rho tawm thiab cov txheej txheem synthesis. Txoj kev rho tawm yuav rov qab sib xyaw cresol los ntawm cov khoom siv hluav taws xob thiab tom qab ntawd tau txais meta cresol los ntawm txoj kev sib cais nyuaj. Cov kev cai synthesis npog ntau txoj hauv kev xws li toluene chlorination hydrolysis, isopropyltoluene method, thiab m-toluidine diazotization method. Lub hauv paus ntawm cov txheej txheem no yog los tsim cov cresol los ntawm cov tshuaj tiv thaiv thiab cais nws ntxiv kom tau txais m-cresol.

Tam sim no, tseem muaj qhov sib txawv tseem ceeb hauv cov txheej txheem tsim khoom ntawm cresol ntawm Tuam Tshoj thiab txawv teb chaws. Txawm hais tias qee qhov kev nce qib tau ua tiav hauv cov txheej txheem tsim khoom ntawm m-cresol hauv Suav teb xyoo tas los no, tseem muaj ntau qhov tsis txaus ntseeg ntawm kev tswj cov tshuaj tiv thaiv, kev xaiv cov tub ntxhais catalysts, thiab kev tswj cov txheej txheem. Qhov no ua rau tus nqi siab ntawm domestically synthesized meta cresol, thiab qhov zoo yog qhov nyuaj rau kev sib tw nrog cov khoom lag luam.

2,Kev sib tw thiab kev sib tw hauv kev sib cais Technology

Kev sib cais tshuab yog qhov tseem ceeb hauv kev tsim cov txheej txheem meta cresol. Vim qhov kub ntawm qhov sib txawv ntawm tsuas yog 0.4 ℃ thiab qhov sib txawv ntawm qhov sib txawv ntawm 24.6 ℃ ntawm meta cresol thiab para cresol, nws yog ib qho nyuaj rau kev sib cais lawv siv cov pa distillation thiab crystallization txoj kev. Yog li ntawd, kev lag luam feem ntau siv molecular sieve adsorption thiab alkylation txoj kev sib cais.

Hauv txoj kev molecular sieve adsorption, kev xaiv thiab kev npaj ntawm molecular sieves yog qhov tseem ceeb. Cov zoo molecular sieves tau zoo adsorb meta cresol, yog li ua tau zoo sib cais los ntawm para cresol. Lub caij no, txoj kev loj hlob ntawm cov catalysts tshiab thiab muaj txiaj ntsig kuj yog ib qho tseem ceeb ntawm kev ua haujlwm ntawm kev sib cais technology. Cov catalysts tuaj yeem txhim kho kev sib cais, txo kev siv hluav taws xob, thiab ntxiv dag zog rau kev ua kom zoo ntawm cov txheej txheem meta cresol ntau lawm.

3,Lub ntiaj teb no thiab Suav lag luam qauv ntawm cresol

Lub ntiaj teb no ntau lawm scale ntawm meta cresol tshaj 60000 tons / xyoo, cov Langsheng los ntawm lub teb chaws Yelemees thiab Sasso los ntawm lub tebchaws United States yog cov loj tshaj plaws producers ntawm meta cresol thoob ntiaj teb, nrog ntau lawm muaj peev xwm mus txog 20000 tons / xyoo. Ob lub tuam txhab no yog nyob rau hauv ib txoj hauj lwm nyob rau hauv kev lag luam nyob rau hauv cov nqe lus ntawm meta cresol ntau lawm txheej txheem, zoo tswj, thiab kev lag luam kev loj hlob.

Nyob rau hauv sib piv, tus naj npawb ntawm cresol ntau lawm tuam txhab uas muag nyob rau hauv Tuam Tshoj yog me me, thiab tag nrho cov muaj peev xwm yog me me. Tam sim no, lub tuam txhab suav cresol tseem ceeb suav nrog Haihua Technology, Dongying Haiyuan, thiab Anhui Shilian, uas nws muaj peev xwm tsim tau txog li 20% ntawm lub ntiaj teb cresol ntau lawm. Ntawm lawv, Haihua Technology yog tus tsim khoom loj tshaj plaws ntawm meta cresol hauv Suav teb, nrog rau txhua xyoo muaj peev xwm ntawm 8000 tons. Txawm li cas los xij, qhov tseeb qhov ntim tau hloov pauv vim muaj ntau yam xws li cov khoom siv raw khoom thiab kev lag luam xav tau.

4,Kev xa khoom thiab kev xav tau qhov xwm txheej thiab import dependence

Cov khoom siv thiab kev xav tau ntawm cresol kev ua lag luam hauv Suav teb qhia tau tias muaj kev hloov pauv. Txawm hais tias kev tsim khoom hauv tsev ntawm cresol tau tswj hwm kev loj hlob ruaj khov nyob rau xyoo tas los no, tseem muaj qhov sib txawv ntawm cov khoom lag luam tseem ceeb vim muaj kev txwv cov txheej txheem ntau lawm thiab kev lag luam downstream xav tau kev loj hlob. Yog li ntawd, Tuam Tshoj tseem yuav tsum tau import ib tug loj npaum li cas ntawm meta cresol txhua txhua xyoo los ua rau cov shortcomings nyob rau hauv lub domestic kev ua lag luam.

Raws li kev txheeb cais, kev tsim khoom ntawm cresol nyob rau hauv Tuam Tshoj xyoo 2023 yog kwv yees li 7500 tons, thaum lub ntim ntim tau nce mus txog 225 tons. Tshwj xeeb tshaj yog nyob rau xyoo 2022, vim muaj kev hloov pauv ntawm cov nqi lag luam thoob ntiaj teb thiab kev loj hlob hauv kev thov hauv tsev, qhov ntim ntawm cresol los ntawm Tuam Tshoj tau tshaj 2000 tons. Qhov no qhia tau hais tias cresol kev ua lag luam nyob rau hauv Tuam Tshoj hnyav hnyav rau cov khoom siv txawv teb chaws.

5,Kev ua lag luam tus nqi sib txawv thiab muaj feem cuam tshuam

Kev lag luam tus nqi ntawm meta cresol yog cuam tshuam los ntawm ntau yam, suav nrog kev lag luam thoob ntiaj teb tus nqi sib txawv, cov khoom siv hauv tsev thiab kev xav tau, cov txheej txheem tsim khoom, thiab kev lag luam thoob ntiaj teb cov cai. Hauv ob peb xyoos dhau los, tag nrho cov nqi lag luam ntawm meta cresol tau qhia txog qhov hloov pauv hloov pauv. Tus nqi siab tshaj ib zaug mus txog 27500 yuan / ton, thaum tus nqi qis tshaj poob mus rau 16400 yuan / ton.

Tus nqi lag luam thoob ntiaj teb muaj kev cuam tshuam loj rau tus nqi hauv tsev ntawm cresol. Vim muaj qhov sib txawv ntawm cov khoom lag luam tseem ceeb hauv kev lag luam cresol ntawm Tuam Tshoj, cov nqi ntshuam feem ntau dhau los ua ib qho kev txiav txim siab ntawm cov nqi hauv tsev. Txawm li cas los xij, nrog kev loj hlob ntawm kev tsim khoom hauv tsev thiab kev txhim kho ntawm cov khoom lag luam, kev tswj hwm ntawm cov nqi hauv tsev tau maj mam rov qab los. Lub caij no, kev txhim kho cov txheej txheem tsim khoom hauv tsev thiab kev tswj hwm tus nqi kuj tseem muaj txiaj ntsig zoo rau cov nqi lag luam.

Tsis tas li ntawd, kev ua raws li txoj cai tiv thaiv dumping kuj muaj qee yam cuam tshuam rau kev lag luam tus nqi ntawm meta cresol. Piv txwv li, Tuam Tshoj tau pib qhov kev tshawb nrhiav los tiv thaiv kev lag luam ntawm cov khoom lag luam meta cresol los ntawm Tebchaws Meskas, European Union, thiab Nyij Pooj, ua rau nws nyuaj rau cov khoom lag luam meta cresol los ntawm cov teb chaws no nkag mus rau Suav lag luam, yog li cuam tshuam rau cov khoom siv thiab kev thov qauv. thiab tus nqi sib txawv ntawm lub ntiaj teb meta cresol kev ua lag luam.

6,Downstream kev lag luam tsav tsheb thiab kev loj hlob muaj peev xwm

Raws li ib qho tseem ceeb nruab nrab hauv kev lag luam tshuaj zoo, meta cresol muaj ntau yam kev siv qis qis. Nyob rau hauv xyoo tas los no, nrog kev loj hlob sai ntawm downstream menthol thiab tshuaj tua kab kev lag luam, kev lag luam thov rau meta cresol kuj tau qhia txog kev loj hlob zoo.

Menthol, raws li cov khoom xyaw tseem ceeb, muaj ntau yam kev siv hauv kev lag luam tshuaj txhua hnub. Nrog rau tib neeg nrhiav kev ua neej zoo thiab kev nthuav dav ntxiv ntawm cov khoom lag luam tshuaj lom neeg niaj hnub, qhov kev thov rau menthol tseem nce ntxiv. Raws li ib qho ntawm cov khoom siv tseem ceeb rau kev tsim cov menthol, kev lag luam thov rau m-cresol kuj tau nce ntxiv.

Tsis tas li ntawd, kev lag luam tshuaj tua kab kuj yog ib qho tseem ceeb ntawm daim ntawv thov ntawm meta cresol. Nrog rau kev txhim kho ntawm ib puag ncig kev paub thiab kev kho kom zoo thiab txhim kho kev lag luam tshuaj tua kab, qhov kev thov kom muaj txiaj ntsig zoo, tsis muaj tshuaj lom, thiab cov khoom siv tshuaj tua kab ib puag ncig yog nce ntxiv. Raws li ib qho tseem ceeb raw khoom rau kev tsim ntau yam tshuaj tua kab, kev lag luam thov rau meta cresol yuav loj hlob ntxiv.

Ntxiv nrog rau kev lag luam menthol thiab tshuaj tua kab, m-cresol kuj muaj kev siv dav hauv VE thiab lwm qhov chaw. Txoj kev loj hlob sai ntawm cov teb no tseem muab txoj hauv kev loj hlob dav rau kev lag luam meta cresol.

7,Kev pom yav tom ntej thiab cov lus qhia

Saib ua ntej, Tuam Tshoj cresol kev ua lag luam tab tom ntsib ntau lub sijhawm thiab kev sib tw. Nrog rau kev txhim kho txuas ntxiv ntawm cov txheej txheem tsim khoom hauv tsev thiab kev nthuav dav ntawm kev lag luam hauv qab, qhov kev loj hlob muaj peev xwm ntawm kev lag luam meta cresol tau dhau los ua qhov tseem ceeb. Thaum ntsib teeb meem, kev lag luam cresol hauv Suav teb kuj muaj kev loj hlob dav dav. Los ntawm kev txhim kho thev naus laus zis tshiab, nthuav dav thoob ntiaj teb kev lag luam, ntxiv dag zog rau kev koom tes nrog cov lag luam hauv qab, thiab tau txais kev txhawb nqa los ntawm tsoomfwv, Tuam Tshoj txoj kev lag luam cresol xav kom ua tiav kev ruaj khov thiab ruaj khov rau yav tom ntej.