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Dimethyl carbonate ya Industrial Field

Dimethyl carbonate (DMC) ndi gulu losunthika lomwe limapereka maubwino angapo m'mafakitale osiyanasiyana. The mankhwala chilinganizo cha DMC ndi C3H6O3, amene ndi mankhwala zopangira ndi otsika kawopsedwe, ntchito bwino zachilengedwe ndi ntchito lonse. Monga gawo lapakati lofunikira pakuphatikizika kwachilengedwe, kapangidwe kake ka DMC kamakhala ndi magulu ogwira ntchito monga carbonyl, methyl ndi methoxy, omwe amamupatsa zinthu zosiyanasiyana zogwira ntchito. Makhalidwe apadera monga chitetezo, kumasuka, kuwononga pang'ono komanso kuyenda kosavuta kumapangitsa DMC kukhala chisankho chokongola kwa opanga omwe akufunafuna mayankho okhazikika.


Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Technical Index

Zinthu Chigawo Standard Zotsatira
Maonekedwe -

Zamadzimadzi zopanda mtundu & zowonekera

Zamkatimu % Mphindi 99.5 99.91
Methanol % Max0.1 0.006
Chinyezi % Max0.1 0.02
Acidity (CH3COOH) % Zokwanira 0.02 0.01
Kachulukidwe @20ºC g/cm3 1.066-1.076 1.071
Colour, Pt-Co Mtundu wa APHA Max10 5

Kugwiritsa ntchito

Ubwino umodzi waukulu wa DMC ndi kuthekera kwake kusintha phosgene ngati wothandizira carbonylating, kupereka njira yotetezeka komanso yosamalira zachilengedwe. Phosgene imakhala pachiwopsezo chachikulu ku thanzi la anthu komanso zachilengedwe chifukwa cha kawopsedwe kake. Pogwiritsa ntchito DMC m'malo mwa phosgene, opanga sangangowonjezera chitetezo, komanso amathandizira kupanga njira yobiriwira, yoyeretsa.

Kuphatikiza apo, DMC imatha kukhala m'malo mwa methylating agent dimethyl sulfate. Dimethyl sulphate ndi mankhwala oopsa kwambiri omwe amawononga kwambiri ogwira ntchito komanso chilengedwe. Kugwiritsira ntchito DMC monga wothandizira methylating kumathetsa ngozizi pamene kumapereka zotsatira zofanana. Izi zimapangitsa DMC kukhala yabwino kwa mafakitale opanga mankhwala, agrochemicals, ndi mankhwala ena ofunikira a methyl.

Kuphatikiza pa zabwino zomwe tatchulazi, DMC imachitanso bwino ngati chosungunulira kawopsedwe chochepa, ndikupangitsa kuti ikhale chisankho chowoneka bwino pamagwiritsidwe osiyanasiyana. Kuchepa kwake kawopsedwe kumatsimikizira malo ogwira ntchito otetezeka, kuchepetsa chiopsezo cha ogwira ntchito ndi ogula kuzinthu zoopsa. Kuphatikiza apo, kusungunuka kwabwino kwa DMC komanso kuyanjana kwakukulu ndi zida zosiyanasiyana kumapangitsa kuti ikhale yofunika kwambiri popanga zopangira mafuta. Kugwiritsa ntchito DMC ngati zosungunulira zowonjezera mafuta kumathandizira kuyaka bwino kwa petulo, komwe kumachepetsa mpweya komanso kumapangitsa kuti injini igwire bwino ntchito.

Pomaliza, dimethyl carbonate (DMC) ndi njira yosunthika komanso yosasunthika kumagulu azikhalidwe. Chitetezo chake, kusavuta, kawopsedwe kochepa komanso kuyanjana kumapangitsa DMC kukhala yabwino pazogwiritsa ntchito zosiyanasiyana. Pochotsa phosgene ndi dimethyl sulfate, DMC imapereka njira yotetezeka, yobiriwira popanda kusokoneza magwiridwe antchito. Kaya imagwiritsidwa ntchito ngati carbonylating agent, methylating agent, kapena low-toxicity solvent, DMC ndi njira yodalirika yamafakitale omwe akufuna kupititsa patsogolo malonda ndi njira ndikuchepetsa kuwononga chilengedwe.


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