M-cresol, eo hape e tsejoang e le m-methylphenol kapa 3-methylphenol, ke motsoako oa organic o nang le foromo ea lik'hemik'hale C7H8O. Mocheso oa kamore, hangata ke mokelikeli o mosehla o se nang 'mala kapa o bobebe, o qhibilihang hanyane ka metsing, empa o qhibiliha ka har'a metsoako e kang ethanol, ether, sodium hydroxide, 'me e na le ho chesa. Motsoako ona o na le lisebelisoa tse ngata tse fapaneng tšimong ea lik'hemik'hale tse ntle.

Tšimo ea chefo e bolaeang likokoanyana: Joalo ka thepa ea mahareng le e tala ea chefo e bolaeang likokoanyana, m-cresol e sebelisoa hape tlhahisong ea chefo e bolaeang likokoanyana ea pyrethroid, joalo ka fluazuron, cypermethrin, glyphosate, le dichlorophenol, ka ho hlahisa chefo e bolaeang likokoanyana m-phenoxybenzaldehyde. Lefapheng la meriana, m-cresol e na le mefuta e mengata ea lisebelisoa 'me e ka sebelisoa e le thepa e tala ho hlahisa lithethefatsi tse sa tšoaneng, tse kang li-anti-inflammatory drugs, anti-cancer, joalo-joalo. Ho phaella moo, m-cresol e ka boela ea sebelisoa ho lokisa lisebelisoa tsa bongaka le li-disinfectants. Indasteri ea lik'hemik'hale e ntle: m-cresol e ka sebelisoa ho hlahisa lihlahisoa tse fapaneng tsa lik'hemik'hale tse ntle. Mohlala, e ka sebetsana le formaldehyde ho etsa resin ea m-cresol formaldehyde, e leng chefo e bolaeang likokoanyana ea bohlokoa e lipakeng 'me e ka sebelisoa ho hlahisa sebolaea-mokooane le sebolaea likokoanyana. Ho phaella moo, e ka boela ea sebelisoa ho hlahisa li-antioxidants, dyes, linoko, joalo-joalo masimo a mang: m-cresol e ka boela ea sebelisoa ho lokisetsa lisebelisoa tse sebetsang, tse kang li-resin exchange ion, adsorbents, joalo-joalo.

 1,Kakaretso ea ts'ebetso ea tlhahiso le liphapang tsa lehae le tsa machabeng

Ts'ebetso ea tlhahiso ea meta cresol e ka aroloa haholo ka mekhahlelo e 'meli: mokhoa oa ho ntša le mokhoa oa ho kopanya. Mokhoa oa ho ntša o kenyelletsa ho khutlisa cresol e tsoakiloeng lihlahisoa tsa mashala le ho fumana meta cresol ka mokhoa o rarahaneng oa karohano. Melao ea ho kopanya e akaretsa mekhoa e fapaneng e kang toluene chlorination hydrolysis, mokhoa oa isopropyltoluene, le mokhoa oa m-toluidine diazotization. Moko-taba oa mekhoa ena ke ho kopanya cresol ka ho kopana ha lik'hemik'hale le ho e arola hape ho fumana m-cresol.

Hajoale, ho ntse ho na le lekhalo le leholo ts'ebetsong ea tlhahiso ea cresol lipakeng tsa China le linaha tsa kantle. Le hoja ho entsoe tsoelo-pele e itseng tšebetsong ea tlhahiso ea m-cresol naheng ea Chaena lilemong tsa morao tjena, ho ntse ho e-na le mefokolo e mengata taolong ea karabelo ea lik'hemik'hale, khetho ea li-catalyst tsa mantlha, le taolo ea ts'ebetso. Sena se lebisa ho theko e phahameng ea meta cresol e entsoeng ka har'a naha, 'me boleng bo thata ho qothisana lehlokoa le lihlahisoa tse tsoang kantle ho naha.

2,Liqholotso le Khatelo-pele ho Theknoloji ea Karohano

Theknoloji ea karohano e bohlokoa ts'ebetsong ea tlhahiso ea meta cresol. Ka lebaka la phapang ea ntlha e belang ea 0.4 ℃ feela le phapang ea ntlha ea ho qhibiliha ea 24.6 ℃ pakeng tsa meta cresol le para cresol, ho thata ho li arola ka katleho ho sebelisa mekhoa e tloaelehileng ea distillation le crystallization. Ka hona, indasteri ka kakaretso e sebelisa mokhoa oa adsorption oa molecular sieve le alkylation bakeng sa karohano.

Mokhoeng oa adsorption oa molek'hule, khetho le ho lokisoa ha li-sieve tsa molek'hule li bohlokoa. Li-sieve tsa boleng bo holimo tsa limolek'hule li ka bapatsa meta cresol ka nepo, ka hona tsa fihlela karohano e sebetsang ho tsoa ho para cresol. Ho sa le joalo, nts'etsopele ea li-catalysts tse ncha le tse sebetsang hantle hape ke tataiso ea bohlokoa ea katleho theknolojing ea karohano. Lits'oants'o tsena li ka ntlafatsa ts'ebetso ea karohano, tsa fokotsa ts'ebeliso ea matla, le ho nts'etsapele ntlafatso ea ts'ebetso ea tlhahiso ea meta cresol.

3,Mokhoa oa 'maraka oa lefats'e le oa China oa cresol

Sekala sa lefats'e sa tlhahiso ea meta cresol se feta lithane tse 60000 / selemo, moo Langsheng e tsoang Jeremane le Sasso e tsoang United States e leng bahlahisi ba kholo ka ho fetisisa ba meta cresol lefatšeng ka bophara, 'me matla a tlhahiso a fihla ho lithane tse 20000 ka selemo. Likhamphani tsena tse peli li maemong a etelletseng pele indastering mabapi le ts'ebetso ea tlhahiso ea meta cresol, taolo ea boleng le nts'etsopele ea mmaraka.

Ka lehlakoreng le leng, palo ea likhoebo tsa tlhahiso ea cresol naheng ea China e batla e le nyane, 'me matla a tlhahiso ka kakaretso a batla a fokola. Hajoale, likhoebo tsa mantlha tsa tlhahiso ea cresol ea China li kenyelletsa Haihua Technology, Dongying Haiyuan, le Anhui Shilian, bao matla a bona a tlhahiso a etsang hoo e ka bang 20% ​​ea matla a lefats'e a tlhahiso ea cresol. Har'a bona, Haihua Technology ke mohlahisi e moholo ka ho fetisisa oa meta cresol Chaena, e nang le matla a selemo a tlhahiso ea lithane tse ka bang 8000. Leha ho le joalo, palo ea 'nete ea tlhahiso e ea fetoha ka lebaka la lintlha tse fapaneng tse kang phepelo ea thepa e tala le tlhoko ea 'maraka.

4,Boemo ba phepelo le tlhokeho le ho itshetleha ka ho reka kantle ho naha

Boemo ba phepelo le tlhoko ea 'maraka oa cresol naheng ea China bo bonts'a ho hloka botsitso ho itseng. Leha tlhahiso ea lehae ea cresol e bolokile kholo e tsitsitseng lilemong tsa morao tjena, ho ntse ho e-na le lekhalo le leholo la phepelo ka lebaka la mefokolo ea ts'ebetso ea tlhahiso le kholo ea tlhokahalo ea mebaraka. Ka hona, China e ntse e hloka ho kenya chelete e ngata ea meta cresol selemo se seng le se seng ho lefella mefokolo 'marakeng oa lehae.

Ho latela lipalo-palo, tlhahiso ea cresol naheng ea China ka 2023 e ne e ka ba lithane tse 7500, athe bophahamo ba thepa e tsoang kantle bo fihlile ho lithane tse 225. Haholo-holo ka 2022, ka lebaka la ho feto-fetoha ha litheko tsa mebaraka ea machabeng le kholo ea tlhokeho ea lehae, bophahamo ba theko ea cresol bo tsoang China bo feta lithane tse 2000. Sena se bontša hore 'maraka oa cresol naheng ea China o itšetlehile haholo ka lisebelisoa tse tsoang kantle ho naha.

5Mekhoa ea theko ea 'maraka le lintlha tse susumetsang

Theko ea 'maraka ea meta cresol e susumetsoa ke lintlha tse fapaneng, ho kenyeletsoa mekhoa ea litheko tsa mebaraka ea machabeng, maemo a phepelo ea lapeng le tlhoko, litšenyehelo tsa ts'ebetso ea tlhahiso, le maano a khoebo a machabeng. Lilemong tse 'maloa tse fetileng, theko e akaretsang ea meta cresol e bonts'itse maemo a ntseng a phahama. Theko e phahameng ka ho fetisisa e kile ea fihla ho 27500 yuan/ton, ha theko e tlaase e theohetse ho 16400 yuan/ton.

Theko ea 'maraka ea machaba e na le tšusumetso e kholo ho theko ea lehae ea cresol. Ka lebaka la lekhalo le leholo la phepelo 'marakeng oa cresol lipakeng tsa China, litheko tsa kantle ho naha hangata e ba tsona tse khethollang litheko tsa lehae. Leha ho le joalo, ka kholo ea tlhahiso ea lehae le ntlafatso ea ketane ea indasteri, puso ea litheko tsa lehae e ntse e khutla butle-butle. Ho sa le joalo, ntlafatso ea mekhoa ea tlhahiso ea lehae le taolo ea litšenyehelo li boetse li na le phello e ntle ho litheko tsa 'maraka.

Ho phaella moo, ts'ebetsong ea maano a khahlanong le ho lahla ho boetse ho na le phello e itseng ho theko ea 'maraka ea meta cresol. Mohlala, China e qalile liphuputso tse khahlano le ho lahloa ha meta cresol e tsoang kantle ho naha e tsoang United States, European Union, le Japan, e leng ho etsang hore ho be thata hore lihlahisoa tsa meta cresol tse tsoang linaheng tsena li kene 'marakeng oa China, ka hona li ama phepelo le mokhoa oa tlhokeho. le mokhoa oa theko oa 'maraka oa lefatše oa meta cresol.

6Bakhanni ba limmaraka tse tlase le bokhoni ba kholo

Joalo ka setsi sa bohlokoa indastering e ntle ea lik'hemik'hale, meta cresol e na le mefuta e mengata ea lits'ebetso tse tlase. Lilemong tsa morao tjena, ka kholo e potlakileng ea mebaraka ea menthol le chefo e bolaeang likokoanyana, tlhokahalo ea mmaraka ea meta cresol e boetse e bonts'itse kholo e tsitsitseng.

Menthol, e le motsoako oa bohlokoa oa linoko, o na le mefuta e mengata ea tšebeliso ea lik'hemik'hale tsa letsatsi le letsatsi. Ka ho phehella ha batho ho fumana boleng ba bophelo le katoloso e tsoelang pele ea 'maraka oa letsatsi le letsatsi oa lihlahisoa tsa lik'hemik'hale, tlhoko ea menthol le eona ea eketseha. E le e 'ngoe ea lisebelisoa tsa bohlokoa tsa tlhahiso ea menthol, tlhokahalo ea mmaraka ea m-cresol le eona e eketsehile.

Ho feta moo, indasteri ea chefo e bolaeang likokoanyana le eona ke e 'ngoe ea libaka tsa bohlokoa tsa ts'ebeliso ea meta cresol. Ka ntlafatso ea tlhokomeliso ea tikoloho le tokiso le ntlafatso ea indasteri ea chefo e bolaeang likokoanyana, tlhokahalo ea lihlahisoa tse bolaeang likokoanyana tse sebetsang hantle, tse nang le chefo e tlase, le tse baballang tikoloho e ntse e eketseha. E le sesebelisoa sa bohlokoa sa ho hlahisa chefo e bolaeang likokoanyana, tlhokahalo ea 'maraka ea meta cresol e tla tsoela pele ho hola.

Ntle le indasteri ea menthol le chefo e bolaeang likokoanyana, m-cresol e boetse e na le ts'ebeliso e pharalletseng ho VE le masimong a mang. Ntlafatso e potlakileng ea masimo ana e boetse e fana ka menyetla ea kholo e pharalletseng bakeng sa mmaraka oa meta cresol.

7,Pono ea bokamoso le litlhahiso

Ha re sheba pele, 'maraka oa China oa cresol o tobane le menyetla le mathata a mangata. Ka ntlafatso e tsoelang pele ea lits'ebetso tsa tlhahiso ea lehae le katoloso e tsoelang pele ea limmaraka tse tlase, kholo ea kholo ea indasteri ea meta cresol e ntse e eketseha. Leha e tobane le mathata, indasteri ea cresol naheng ea China le eona e na le menyetla e mengata ea nts'etsopele. Ka ho eketsa boqapi ba theknoloji, ho holisa mebaraka ea machabeng, ho matlafatsa tšebelisano le likhoebo tse tlase, le ho fumana tšehetso ea mmuso, indasteri ea China ea cresol e lebelletsoe ho fihlela nts'etsopele e tsitsitseng le e tsitsitseng nakong e tlang.