MTBE

MTBE yog dab tsi?

Methyl tert-butyl ether (mtbe), tseem hu ua tert-butyl methyl ether, yog cov organic compound nrog cov qauv qauv (ch3)3coch3. Mtbe yog volatile, flammable, thiab colorless kua uas yog sparingly soluble nyob rau hauv dej.Primary siv raws li ib tug roj additive, mtbe yog blended rau hauv roj av kom nws octane ntsuam xyuas thiab khob tsis kam, thiab txo pliaj emissions.

Qhov zoo ntawm MTBE

Tsawg volatility

Methyl tert-butyl ether muaj cov yam ntxwv ntawm qhov tsis muaj zog. Cov kuab tshuaj no tsis tshua muaj volatile ntawm chav tsev kub, yog li nws tuaj yeem txo cov toxicity thiab txaus ntshai thaum lub sijhawm ua haujlwm thiab ua kom muaj kev nyab xeeb ntawm tus kws sim.

Muaj zog dissolving muaj peev xwm

Methyl tert -butyl ether muaj zog solubility. Cov kuab tshuaj no tuaj yeem yaj ntau cov organic. Rau qee yam khoom uas nyuaj rau kev sib cais, methyl tert -butyl ether extractant tuaj yeem txhim kho kev sib cais.

Tsawg toxicity

Cov tshuaj lom ntawm methyl tert-butyl ether tsawg heev, thiab qee zaus luv luv- lub sij hawm raug rau hauv cov tshuaj sim tshuaj yuav tsis ua mob. Qhov no yog vim li cas hauv kev sim tshuaj niaj hnub no, mtbe tau siv dav hauv kev tsim khoom, kev tshawb fawb thiab kev tsim kho, thiab kev tshuaj xyuas cov tshuaj tiv thaiv.

Zoo thermal stability

Methyl tert -butyl ether muaj thermal stability zoo. Thaum qhov kub thiab txias, cov qauv molecular ntawm methyl tert-butyl ether hnyav yuav tsis hloov, thiab nws cov kev ua tau zoo thiab cov nyhuv zoo ib yam li cov nyob hauv chav sov, ua kom qhov tseeb ntawm qhov kev sim.

Tsev 12 3 4 5 6 Rau sab kawg 1/6

Vim Li Cas Xaiv Peb

Ib - nres kev pabcuam
Gnee chemical tau mob siab rau muab cov khoom siv tshuaj rau koj ib qho - nres kev pabcuam, kev lag luam txawv teb chaws xa tawm cov khoom lag luam tshuaj xyuas cov khoom txaus ntshai, cov khoom me me yuav khoom, kev hloov kho nruab nrab, tshuaj lom neeg cov khoom lag luam ntsuas tus nqi, ntau yam khoom ntim khoom, thiab lwm yam kev pabcuam, kom tau raws li cov neeg siv khoom xav tau rau ntau yam khoom siv.

Pab neeg ua haujlwm tshaj lij
Raws li kev lag luam tshuaj lom neeg, lub tuam txhab ib txwm tso kev nyab xeeb rau thawj qhov chaw, thiab hais rau lub tswv yim kev tswj xyuas logistics tias muaj kev nyab xeeb ua ntej muaj yav tom ntej. Rau cov yam ntxwv ntawm cov neeg siv khoom sib txawv cov kev xav tau, peb muab cov yam ntxwv thiab tus kheej cov kev pabcuam logistics thiab kev daws teeb meem kev thauj mus los, thiab peb pab pawg ua haujlwm tshaj lij yuav ua raws li kev txiav txim.

Peb daim ntawv pov thawj
Peb ua raws li lub hauv paus ntsiab lus ntawm "zoo ua ntej" thiab tau txais daim ntawv pov thawj ISO 9001. Peb kuj tau teeb tsa lub chaw kuaj tshwj xeeb rau cov khoom siv tshuaj lom neeg thiab ua raws li cov qauv kev tswj hwm nruj ntawm txhua theem ntawm cov txheej txheem tsim khoom.

Cov khoom zoo
Peb tau nqis peev ntau hauv kev txhim kho peb cov khoom tsim khoom thiab tshuaj xyuas kom ntseeg tau tias lawv ib txwm nyob ntawm cov thev naus laus zis, txhim kho kev tsim khoom thiab ua kom cov khoom zoo.

Raws li Solvent

MAs ib qho hnyav, mtbe nws muaj ib qho txiaj ntsig zoo dua li feem ntau ethers - nws muaj qhov qis dua los tsim cov organic peroxides tawg. Qhib lub raj mis ntawm diethyl ether los yog thf tuaj yeem tsim cov qib txaus ntshai ntawm cov peroxides hauv lub hlis, thaum cov qauv ntawm mtbe feem ntau muaj kev nyab xeeb rau xyoo (tab sis lawv tseem yuav tsum tau kuaj ib ntus). Vim li no (nrog rau nws qhov kub siab dua), nws yog siv los ua cov kuab tshuaj ntau hauv kev lag luam, qhov twg muaj kev txhawj xeeb txog kev nyab xeeb thiab cov kev cai ua haujlwm nrog diethyl ether, thf, lossis lwm yam ethers nyuaj thiab kim dua. Txawm li cas los xij, txawm tias muaj koob meej ntawm mtbe hauv kev lag luam, nws tsis tshua siv los ua cov kuab tshuaj hauv kev kawm. Kev tshawb fawb ntim tsawg dua, ua rau muaj kev pheej hmoo qis dua los ntawm lwm cov ethers, thiab ntxiv rau kev siv mtbe ua cov kuab tshuaj yog qhov tsawg heev hauv cov ntaub ntawv hluavtaws cov txheej txheem.

Persistence thiab Pervasiveness nyob rau hauv ib puag ncig

Mtbe feem ntau tau nkag mus rau hauv dej- muab cov dej xau los ntawm kev tso dej hauv av (usts) ntawm cov chaw siv roj av. Txawm hais tias usts tau tsim zoo dua tam sim no ntau dua li xyoo 1980s, qhov kev tso tawm tsis raug tseem tshwm sim vim muaj coob tus ntawm usts. Lub siab solubility thiab persistence ntawm mtbe ua rau nws mus sai thiab deb tshaj li ntau lwm yam roj av Cheebtsam thaum tso rau hauv ib tug aquifer. Nws tseem raug tso tawm thaum twg cov roj av nrog mtbe nchuav rau hauv av. Vim nws yog dej soluble, nws yooj yim txav los ntawm av, polluting ob qho tib si saum npoo av thiab hauv av.

Mtbe muaj ntau qhov tshwm sim nyob rau hauv cov dej ntws ntawm sab qaum teb Asmeskas, qhov twg feem ntau ntawm cov dej hauv av chemistry tau txais. Raws li ib qho piv txwv hauv cheeb tsam, san francisco bay cheeb tsam cheeb tsam cheeb tsam tswj xyuas dej zoo hauv cheeb tsam tau qhia tias mtbe yog ib qho ntawm cov dej paug hauv av uas muaj kev txhawj xeeb tshaj plaws nyob rau hauv cheeb tsam loj ntawm lub teb chaws usa.

Mtbe yog biodegradable rau co2 thiab dej nyob rau hauv aerobic mob nrog cov kab mob uas raug. Txawm li cas los xij, qhov tshwm sim ntawm cov kab mob no uas muaj peev xwm ua txhaum ether bonds tsis siab thiab nws zoo nkaus li tias feem ntau cov kab mob mtbe oxidizing kab mob yog cov kab mob loj hlob qeeb nrog tsawg biomass ntau lawm ib chav mtbe oxidized. Nyob rau hauv hom bioreactor kom zoo, xws li ib tug fluidized txaj bioreactor, mtbe tuaj yeem raug tshem tawm sai thiab kev lag luam tawm ntawm dej mus rau qhov tsis muaj - qib ntsuas.

Daim ntawv thov ntawm MTBE hauv Gasoline Additives los Hloov Lead

Mtbe plays lub luag haujlwm tseem ceeb hauv kev hloov cov hlau lead nrog roj av additives. Qhov no yog vim qhov zoo hauv qab no: 1) nws yog miscible nrog roj av nyob rau hauv ib qho piv txwv tsis muaj stratification; 2) thaum sib xyaw nrog roj av, cov nyhuv sib xyaw yog qhov zoo thiab muaj tus lej octane ntau dua; 3) cov qauv mtbe ruaj khov thiab tsis yooj yim rau oxidize, thiab nws muaj zog ruaj khov tiv thaiv - tawg tsis kam thaum combustion; 4) Nws txo qis cov pa roj carbon monoxide cov ntsiab lus hauv lub tsheb tso tawm, yog li nws zoo heev txhim kho qhov zoo ntawm lub tsheb tso pa tawm thiab ua tau raws li cov kev cai ntawm kev tiv thaiv ib puag ncig; 5) combustion nqi yog loj, uas zoo tswj cov tiam ntawm ozone thiab txo cov emission ntawm benzene los yog butadiene teeb meem rau tib neeg beings. Txawm hais tias mtde muaj qhov zoo saum toj no raws li lub tshuab roj av, mte muaj qhov tsis zoo, uas yog, nws tsis tuaj yeem degraded nyob rau hauv cov pa oxygen-dawb tej yam kev mob, uas tseem yuav yog ib qho tseem ceeb cuam tshuam kev loj hlob ntawm mtde.

Nyob rau tib lub sijhawm, methyl tert-butyl ether plays lub luag haujlwm tseem ceeb hauv cov txheej txheem tawg ntawm isobutylene, vim tias isobutylene yog siv dav hauv kev sib xyaw ntawm tert-butyl, tert-butene, tshuaj tua kab intermediates thiab benzene thiab lwm yam txheej txheem, nws yog ib qho khoom siv raw. Cov txheej txheem mtbe pyrolysis rau isobutylene muaj cov yam ntxwv hauv qab no: 1) cov isobutylene nyob rau hauv cov khoom yog siab purity, 2) cov txheej txheem yog cov pa phem -dawb, tsis yog -corrosive, thiab cov cuab yeej yog ywj siab. Cov txiaj ntsig zoo no tuaj yeem siv los ua kev daws teeb meem los txo qhov kev txwv ntawm mtde. Cov isobutylene thiab methanol hauv cov khoom siv tshuaj tiv thaiv tau raug kho kom tau txais isobutylene, cov khoom zoo tshaj plaws ntawm siab purity. Methyl tert-butyl ether kuj tseem siv tau los ua cov tshuaj tiv thaiv hnyav thiab reagent, thiab tseem ua lub luag haujlwm sib txawv hauv tshuaj smelting, tshuaj, thiab lwm yam., piv txwv li, methyl tert-butyl ether yog ib qho siab -kev ua tau zoo thiab cov roj cholesterol sai sai pob zeb dissolving tus neeg sawv cev, muaj peev xwm daws tau ntau yam teeb meem.

Kev siv MTBE

01/

Roj av additive
Mtbe yog cov khoom siv roj av siab tshaj -octane, uas tuaj yeem ua kom cov roj av octane tau zoo, yog li txhim kho kev ua haujlwm ntawm lub tsheb thiab txo cov ntsiab lus ntawm cov pa tawm. Nws yog feem ntau siv nyob rau hauv kev sib xyaw ntawm cov roj av tsis muaj txhuas thiab cov roj txhuas tsis tshua muaj los txo cov pa hluav taws xob, pab ua kom tiav cov roj combustion, thiab txo cov pa roj carbon monoxide thiab carbon monoxide emissions hauv tsheb.

02/

Cov khoom siv tshuaj
Ntxiv rau nws cov ntawv thov hauv kev lag luam roj av, mtbe kuj tseem yog cov khoom siv tshuaj tseem ceeb. Los ntawm kev tawg, mtbe tuaj yeem tsim tau siab -purity isobutylene, uas yog cov khoom siv raw rau kev tsim cov roj hmab butyl, mma, polyisobutylene thiab lwm yam khoom siv tshuaj. Cov khoom no tau siv dav hauv kev lag luam roj hmab, kev lag luam yeeb nkab yas, kev lag luam tshuaj tua kab thiab lwm yam.

03/

Cov kuab tshuaj thiab cov extractants
Hauv kev lag luam, mtbe tuaj yeem siv los ua cov kuab tshuaj thiab cov extractant. Nws cov vapor hnyav dua li huab cua, tuaj yeem kis tau raws hauv av, thiab tuaj yeem hlawv thaum co-muaj cov oxidants muaj zog. Yog li ntawd, nws muaj ntau yam kev siv hauv kev lag luam tshuaj, xws li kev lag luam roj, kev lag luam tshuaj thiab lwm yam.

04/

Pharmaceutical nruab nrab
Hauv kev lag luam tshuaj, mtbe tuaj yeem siv los ua cov tshuaj nruab nrab rau kev tsim cov tshuaj. Tshwj xeeb, nws tuaj yeem yaj cov pob zeb hauv lub cev hauv tib neeg lub cev.

Kev Tshawb Fawb Kev Lag Luam Ntawm MTBE Lwm Txoj Haujlwm

Raws li cov kev tshawb fawb tau muab, peb tuaj yeem kawm tau tias mtbe (methyl tert-butyl ether) yog ib qho khoom siv roj av uas siv los ua kom cov roj octane ntau ntxiv. Txawm li cas los xij, qee zaum, nws yuav tsum tau nrhiav lwm txoj hauv kev rau mtbe.

Hom ntawm mtbe lwm txoj kev
Mtbe lwm txoj hauv kev feem ntau suav nrog isooctane, ethanol, n-heptane, thiab lwm yam. Cov kev hloov no txhua tus muaj tus lej octane siab thiab tuaj yeem hloov lub luag haujlwm ntawm mtbe hauv roj av rau qee qhov.

Kev lag luam xav tau
Nrog rau kev txhim kho ntawm ib puag ncig kev paub thiab kev nce qib ntawm kev siv tshuab, ntau thiab ntau lub teb chaws thiab cheeb tsam tau pib txwv kev siv mtbe. Qhov no muab qhov dav dav rau mtbe lwm txoj kev lag luam kom loj hlob. Tsis tas li ntawd, nrog lub koob npe nrov ntawm lub zog tshiab tsheb, qhov kev thov rau cov tsoos roj yuav maj mam txo, uas yuav cuam tshuam rau kev loj hlob ntawm mtbe thiab nws cov kev hloov pauv.

Kev lag luam loj
Tam sim no, lub ntiaj teb no mtbe lwm txoj kev lag luam loj yog nyob rau hauv kev loj hlob. Raws li tsab ntawv ceeb toom, lub ntiaj teb mtbe hloov pauv kev lag luam loj yuav ncav cuag $ x billion los ntawm 2028 (tus nqi tiag tiag yuav tsum tau hloov kho raws li cov ntaub ntawv tiag tiag - sijhawm).

Kev sib tw ua lag luam
Tam sim no, mtbe hloov pauv kev lag luam muaj kev sib tw heev, thiab cov lag luam loj tau nce r & d peev los txhim kho cov khoom zoo thiab txo cov nqi tsim khoom. Tsis tas li ntawd, tsoomfwv thoob plaws ntiaj teb tseem tab tom nce lawv cov kev txhawb nqa rau lub zog tshiab tsheb kev lag luam, ntxiv txhawb kev txhim kho ntawm mtbe lwm txoj kev lag luam.

Kev nqis peev
Nyob rau hauv ib puag ncig tam sim no, kev nqis peev hauv mtbe lwm txoj kev lag luam muaj qee qhov kev pheej hmoo, tab sis kuj tseem muaj peev txheej loj. Cov neeg lag luam yuav tsum tau them sai sai rau txoj kev loj hlob ntawm kev lag luam thiab xaiv cov lag luam nrog cov cuab yeej zoo thiab kev lag luam kev sib tw rau kev nqis peev.

Kev lag luam hloov pauv mtbe yuav qhia txog kev loj hlob sai hauv ob peb xyoos tom ntej no. Txawm li cas los xij, nyob rau hauv qhov cuam tshuam ntawm kev lag luam tsheb tshiab lub zog, kev txhim kho ntawm kev ua lag luam tseem yuav ntsib qee yam kev nyuaj. Yog li ntawd, cov tuam txhab lag luam thiab cov tub ua lag luam yuav tsum tau ua tib zoo mloog rau kev txhim kho kev lag luam thiab kho lawv cov tswv yim hauv lub sijhawm los teb rau kev hloov pauv ntawm kev lag luam.

Features ntawm MTBE

MTBE yog tsim los ntawm cov tshuaj tiv thaiv ntawm methanol, feem ntau ua los ntawm cov nkev, thiab isobutylene. MTBE tau ntxiv rau cov roj av los txhawb kev ua kom tiav ntau dua thiab txo cov pa roj carbon monoxide (CO) thiab cov organic tebchaw. Cov tshuaj ntxiv cov pa oxygen rau cov roj av, uas ua rau kom qhov kub thiab txias ntawm cov roj av kub hauv lub cav thiab txo cov khoom tsim kev puas tsuaj hauv lub tsheb cov pa. Vim tias MTBE sib xyaw ua ke nrog cov roj av yooj yim, thauj tau yooj yim, muaj tus nqi qis thiab kev ntsuas octane siab, MTBE tau dhau los ua cov pa oxygenate ntawm cov neeg tsim khoom siv roj av feem ntau uas ntsib lub xeev thiab tseemfwv txoj cai los tsim cov roj av tsawg dua - pa phem. Nyob rau xyoo 1970s, cov tuam txhab roj av tau pib ntxiv MTBE hauv qhov qis qis rau cov roj av los hloov cov hlau lead thiab txhawb qhov ntsuas octane (qhov ntsuas ntawm cov roj av muaj peev xwm tiv thaiv lub cav cav).

MTBE Kev Tshawb Fawb Txog Kev Tiv Thaiv Ib puag ncig

Cov xwm txheej tam sim no ntawm ib puag ncig muaj kuab paug
Mtbe (methyl tert-butyl ether) yog dav siv los ua ib qho siab -octane roj av sib xyaw. Txawm li cas los xij, mtbe nws tus kheej yog qhov muaj peev xwm ua paug ib puag ncig, thiab mtbes uas xau rau hauv ib puag ncig thaum khaws cia, kev thauj mus los, thiab siv tuaj yeem ua rau muaj kuab paug rau hauv dej. Cov kev tshawb fawb tau pom tias ntau mtbe xau rau hauv qhov chaw tshaj li hauv av thiab dej. Tsis tas li ntawd, mtbe muaj kuab paug feem ntau yog los ntawm kev tsim khoom thiab siv cov roj av sib xyaw, yog li cov qib ntawm mtbe muaj kuab paug nyob rau hauv ib puag ncig muaj kev sib raug zoo nrog kev siv roj av thiab tsheb. Feem ntau, qhov ceev ntawm cov chaw nres tsheb roj thiab cov tsheb siv nyob rau hauv nroog yog qhov siab, uas ua rau muaj qib siab ntawm mtbe nyob rau hauv ib puag ncig, thaum suburban, nyob deb nroog thiab lwm qhov chaw tsis tau tsim muaj cov pa phem tsawg.

Tshawb nrhiav kev nce qib ntawm kev tswj cov pa phem
In order to effectively control mtbe pollution, domestic and foreign scientific research institutions have carried out a large number of research on mtbe pollution and remediation in water. These studies mainly include adsorption, advanced oxidation, microbial degradation, plant transfer and remediation technologies. Adsorbents mainly include activated carbon, zeolite, resin, etc., advanced oxidation methods mainly include catalytic oxidation, h2o>2 oxidation, o3 oxidation, fenton oxidation, electrochemical oxidation, thiab lwm yam., microbial degradation muaj xws li anaerobic thiab aerobic degradation, thiab phytoremediation siv cov nroj tsuag nqus, decompose los yog stabilize mtbe, yog li tshem tawm ntawm ib puag ncig.

Kev cuam tshuam ib puag ncig thiab kev loj hlob
Daim ntawv thov dav ntawm mtbe txhim kho huab cua zoo rau qee qhov, raws li nws tuaj yeem txhawb kev ua tiav ntawm hydrocarbons, txo qhov tsim ntawm benzene thiab aromatic compounds uas muaj cov teebmeem carcinogenic rau tib neeg, thiab ua raws li cov oxidant kom txo cov co thiab nox emissions thaum lub sij hawm roj combustion. Txawm li cas los xij, mtbe yog soluble hauv dej heev, uas ua rau muaj kab mob hauv av. Txij li xyoo 2004, mtbe tau raug txwv nyob hauv California thiab lwm thaj chaw hauv tebchaws United States, feem ntau vim tias muaj mtbe ua rau muaj ntxhiab tsw phem. Txawm li cas los xij, feem ntau cov kev tshawb fawb tau taw qhia tias mtbe muaj qee yam toxicity, thiab nws muaj qee yam kev puas tsuaj rau lub siab, lub raum thiab kev tiv thaiv kab mob ntawm cov tsiaj, tab sis nws tus kheej cov tshuaj tua kab mob tsis loj. Yog li ntawd, kev tshawb nrhiav lwm yam khoom siv thiab thev naus laus zis rau mtbe tau dhau los ua qhov kev txhim kho yav tom ntej.

Kev tsim kho cov khoom siv lwm yam
Nrog kev txhim kho txuas ntxiv ntawm kev tiv thaiv ib puag ncig, cov kws tshawb fawb tau pib tshawb nrhiav lwm cov khoom lag luam rau mtbe. Cov kev xaiv no yuav tsum yog tus phooj ywg ib puag ncig thiab muaj peev xwm ua kom cov octane naj npawb ntawm cov roj av zoo thaum txo cov pa phem rau ib puag ncig. Tam sim no, kev tshawb fawb thiab kev loj hlob ntawm lwm cov khoom lag luam tseem nyob hauv nws cov me nyuam mos, tab sis kev tshawb fawb hauv cheeb tsam no maj mam nce mus. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm kev siv tshuab, peb tuaj yeem cia siab tias qhov tshwm sim ntawm cov khoom siv roj av zoo ib puag ncig.

Mtbe txoj kev tshawb fawb txog kev tiv thaiv ib puag ncig feem ntau tsom rau nws cov pa phem ntawm lub cev dej thiab huab cua thiab cov cuab yeej kho mob sib xws. Thaum mtbe tau ua lub luag haujlwm zoo hauv kev txhim kho huab cua zoo, nws cov pa phem ntawm cov dej hauv av tsis tuaj yeem tsis quav ntsej. Yog li ntawd, kev txhim kho ntawm ib puag ncig tus phooj ywg mtbe lwm txoj hauv kev yog qhov kev tshawb fawb yav tom ntej.

Peb lub Hoobkas

Gnee Chemical Co. Ltd. yog nyob rau hauv anyang nroog, henan xeev, Suav teb, tsim nyob rau hauv 2016, nrog ib tug sau npe peev ntawm 5 lab yuan, lub tuam txhab cheeb tsam ntawm 800 square meters, thiab ntau tshaj 200 neeg ua hauj lwm. Gnee Chemical Co. Ltd. yog ib tug zoo-pab tus neeg muag khoom thiab chaw tsim khoom ntawm cov ntaub ntawv raw khoom hauv Suav teb.

FAQ

Q: Dab tsi yog mtbe siv rau?

A: Mtbe yog tsim nyob rau hauv ntau qhov ntau (tshaj 200,000 barrels ib hnub nyob rau hauv Teb Chaws Asmeskas Xyoo 1999) thiab yuav luag tsuas yog siv los ua cov khoom siv roj ntxiv hauv cov roj av. Nws yog ib pawg ntawm cov tshuaj feem ntau hu ua "oxygenates" vim tias lawv nce cov pa oxygen ntawm cov roj av.

Q: Puas yog mtbe tseem ntxiv rau roj av?

A: Hauv xyoo 2005, lub rooj sib tham dhau los ntawm txoj cai lij choj lub zog uas tshem tawm cov kev xav tau oxygenate rau kev hloov pauv roj av (rfg). Nyob rau tib lub sijhawm, lub rooj sib tham tseem tau tsim cov qauv roj txuas ntxiv. Hauv kev teb, refiners ua lag luam wholesale tshem tawm mtbe thiab sib xyaw roj nrog ethanol.

Q: Puas yog mtbe tib yam li ethanol?

A: Mtbe yog qhov tseem ceeb ntawm cov khoom sib xyaw hauv cov roj av hloov kho, thiab ethanol feem ntau yog cov pa oxygenate ntawm kev xaiv hauv cov roj av oxygenated. Yuav luag tag nrho cov khoom siv mtbe yog siv rau kev hloov kho thiab oxygenated roj av sib xyaw, thaum tsuas yog ib nrab ntawm cov khoom siv ethanol xwb.

Q: Dab tsi yog mtbe siv rau hauv Europe?

A: Hauv eu, daim ntawv thov ntawm mtbe tau tswj hwm los ntawm 1985 cov lus qhia (85/536 / eec) ntawm cov tshuaj ntxiv rau roj av, uas tsis muaj lub xeev cov tswv cuab tuaj yeem tiv thaiv kev siv cov organic oxygenates ntawm cov ntsiab lus qis dua li kev tswj hwm los ntawm cov lus qhia. Rau mtbe qhov no yog qhov siab tshaj plaws ntawm 15% los ntawm ntim.

Q: Lub teb chaws twg siv mtbe?

A: Zoo tag nrho cov mtbe uas tsim tawm hauv tebchaws hauv tebchaws United States tam sim no raug xa tawm mus rau lwm lub tebchaws, feem ntau yog mexico, chile, thiab venezuela (eia 2019, 2022).

Q: Dab tsi yog qhov hloov pauv rau mtbe?

A: Lwm txoj hauv kev rau ethanol yog etbe, uas yog tsim los ntawm ethanol thiab isobutene. Nws qhov kev ua tau zoo li cov khoom siv ntxiv zoo ib yam li mtbe, tab sis vim yog tus nqi siab dua ntawm ethanol piv rau methanol, nws kim dua.

Q: Lwm lub npe rau mtbe yog dab tsi?

A: Cas naj npawb . 1634-04-4.
Synonym. Methyl tert -butyl ether; methyl t -butyl ether; tert-butyl methyl ether; t-butyl methyl ether; mtbe; 2-methoxy-2-methylpropane; methyl-tert-butyl ether; methyl 1,1-dimethylethyl ether; 2-methyl-2-methoxypropane.

Q: Puas yog mtbe siv hauv diesel?

A: Mtbe yog ntxiv txhob txwm rau roj av, tab sis kuj tseem tuaj yeem pom tshwm sim hauv lwm cov khoom siv roj av, xws li cov roj cua sov thiab cov roj diesel, tej zaum yog vim muaj kev sib kis thaum thauj (robbins et al. 2000 ).

Q: Dab tsi yog lwm txoj hauv kev rau mtbe hnyav?

A: Cyclopentyl methyl ether (cpme) yog hydrophobic ether hnyav nrog lub siab kub kub, ua rau nws hloov tau zoo rau ntau cov kuab tshuaj ether, xws li mtbe thiab thf. Cpme muaj cov khoom siv hluavtaws, thiab muaj lwm cov txiaj ntsig, suav nrog kev tuav pov hwm zoo dua.

Q: Qhov kawg siv ntawm mtbe yog dab tsi?

A: Methyl tert-butyl ether (mtbe) yog cov kua nplaum uas muaj qhov sib txawv, tsis pom zoo. Nws yog tsim los ntawm kev sib xyaw tshuaj xws li isobutylene thiab methanol, thiab tau siv txij li xyoo 1980 los ua ib qho ntxiv rau cov roj av uas tsis muaj txhuas kom ua tau zoo dua hlawv. Mtbe kuj yog siv los yaj cov pob zeb.

Q: Vim li cas mtbe yog ib qho teeb meem hauv zos?

A: Thawj qhov kev txhawj xeeb yog tias mtbe paug tuaj yeem ua rau cov khoom siv dej tsis tuaj yeem ua dej haus. Mtbe muaj qhov tsis txaus siab saj thiab tsw uas tuaj yeem kuaj pom hauv dej txawm tias qis qis. Vim muaj teeb meem saj thiab tsw, mtbe paug tau ua rau poob ntawm qee qhov dej haus.

Q: Puas yog mtbe cov kuab tshuaj zoo?

A: Mtbe yog cov roj cholesterol hnyav tshaj plaws muaj. Vim tias nws qhov kub ntawm 55.2℃c, nws tseem ua kua ntawm lub cev kub thiab yooj yim los tuav dua li diethyl ether.

Q: Lub npe ntawm mtbe yog dab tsi?

A: Methyl tert-butyl ether (mtbe) yog cov kua hluav taws xob uas tau siv los ua cov tshuaj ntxiv rau cov roj av tsis muaj lead txij li xyoo 1980s.

Q: Ntev npaum li cas mtbe nyob hauv koj lub cev?

A: Feem ntau mtbe uas nkag mus rau hauv lub cev yog exhaled. Ib qho ntxiv mtbe tawm hauv lub cev tsis pub dhau ib lossis ob hnub hauv huab cua los yog hauv cov zis. Cov ntxhiab tsw ua ntej muaj teeb meem tshwm sim.

Q: Mtbe tsw zoo li cas?

A: Kuv yuav ua li cas thiaj paub yog tias kuv muaj mtbe hauv kuv cov dej? Nws yog qhov ua tau koj cov dej yuav saj thiab / lossis tsw zoo li turpentine yog tias mtbe nyob rau ntawm theem ib puag ncig lossis siab dua 20-40 ppb (qee tus neeg yuav pom nws txawm tias qis dua).

Q: Puas yog mtbe cov khoom siv roj av?

A: Mtbe yog tsim los ntawm cov tshuaj tiv thaiv ntawm methanol thiab isobutylene. Methanol yog muab los ntawm cov nkev ntuj, thiab isobutylene yog muab los ntawm butane tau los ntawm cov roj crude los yog natural gas, yog li mtbe yog muab los ntawm fossil fuels.

Q: Koj tsim mtbe li cas?

A: Cov txheej txheem rau kev npaj mtbe (methyl tert butyl ether) los ntawm c4 feem hauv etherified liquefied gas yog tus cwj pwm nyob rau hauv uas nyob rau hauv ib tug mtbe synthesis ntaus ntawv, raw cov ntaub ntawv c4 thiab methanol yog pub rau hauv lub reactor, nyob rau hauv lub xub ntiag ntawm ib tug catalyst, isobutene nyob rau hauv c4 thiab methanol yog raug rau etherification.

Q: Cov peev txheej ntawm mtbe yog dab tsi?

A: Mtbe tuaj yeem nkag mus rau hauv ib puag ncig, tshwj xeeb tshaj yog rau cov dej, los ntawm kev xau hauv av thiab saum toj kawg nkaus roj av cia tank (usts thiab asts) los ntawm cov kua thiab vapor tso tawm. Lwm qhov chaw ntawm mtbe muaj xws li atmospheric deposition, cua daj cua dub dej ntws, watercraft, thiab siv roj hauv tsev.

Q: Puas yog mtbe yaj hauv dej?

A: Mtbe dissolves nyob rau hauv dej yooj yim thiab evaporates los ntawm dej los yog av mus rau hauv huab cua . 1 koj yuav raug rau mtbe los ntawm haus dej tsis huv. Koj tseem tuaj yeem raug mtbe uas nkag mus rau hauv huab cua thaum cov dej tsis huv yog siv rau da dej, ntxhua khaub ncaws thiab tais diav, lossis lwm yam dej num hauv tsev.

Q: Puas yog mtbe tib yam li ethanol?

Tianjin Gnee Biotech Co., Ltd. yog ib qho ntawm cov kws tshaj lij mtbe tuam ntxhab thiab cov muag khoom hauv Suav teb, tshwj xeeb los ntawm cov khoom zoo thiab cov nqi sib tw. Thov koj xav tias dawb mus yuav pheej yig mtbe muag ntawm no los ntawm peb lub hoobkas.