Dimethyl carbonate ndi chinthu chofunikira kwambiri chogwiritsidwa ntchito ndi mankhwala, mankhwala, zamagetsi ndi minda ina. Nkhaniyi idzetsa ntchito yopanga ndikukonzekera njira ya Dimethyl Carbonate.

1, njira yopanga carbonate ya dimethyl

Kupanga kwa carbonate ya dimethyl kumagawika m'mitundu iwiri: njira yamankhwala ndi njira yakuthupi.

1) Njira ya mankhwala

Mankhwala a mankhwala a mankhwala a Dimethyl Carbonate ndi: Ch3oh + co2 → chkhOOC2ch3ch3

Methanol ndi zinthu zopangira za dimethyl carbonate, ndi mafuta a Carbonate ndi woyandikana. Njira yochitira izi imafunikira chothandizira.

Pali othandizira osiyanasiyana, kuphatikiza sodium hydroxide, calcium oxide, mkuwa oxide, ndi carbonate. Nyimbo ya Carboniate ili ndi zokopa zabwino kwambiri, koma kusankhidwa kwa chothandizira kumafunikiranso kuona zinthu monga mtengo ndi malo.

Kupanga kwa carbonate ya dimethyl makamaka monga kutsuka kwa Methathal, otenthetsera, kupatukana, kuwongolera, ndi nthawi yoyeserera kuti ikhale yotunga komanso Kuyera.

2) Njira yakuthupi

Pali njira ziwiri zazikulu zakuthupi zopangira dimethyl carbonate: Njira yoyamikira komanso yosokoneza.

Njira yoyamitsira imagwiritsa ntchito methanol ngati wotanganidwa ndi kuyanjana ndi CO2 kutentha pang'ono kuti apange dimethyl carbonate. Wofalayo amatha kugwiritsidwanso ntchito, ndipo kaboni dibonizi yopangidwa ndi zomwe zimachitikazo zitha kubwezeretsedwanso, koma kuchuluka kwa zomwe zimachitika kumachitika pang'onopang'ono komanso kugwiritsa ntchito mphamvu ndizokwera.

Malamulo oponderezedwa amagwiritsa ntchito ndalama zakuthupi kuti agwirizane ndi methanol pansi pa kukakamizidwa kwambiri, potero amakwaniritsa kukonzekera kwa Dimethyl Carbonate. Njira iyi imachita bwino kwambiri, koma imafunikira zida zapamwamba kwambiri komanso zodula.

Njira ziwiri zomwe zili pamwambazi zili ndi zabwino zawo komanso zowawa zawo, ndipo zitha kusankhidwa kutengera zosowa za kugwiritsa ntchito ndi zinthu zachuma.

2, Kukonzekera Njira ya Dimethyl Carbonate

Pali njira zingapo zokopera Dimethyl Carbonate, ndipo awa ndi njira ziwiri zomwe zimagwiritsidwa ntchito:

1) Njira ya Methanol

Ichi ndiye njira yogwiritsidwa ntchito kwambiri pokonzekera dimethyl carbonate. Njira zoyendetsera zenizeni zili motere:

(1) Onjezani methanol ndi potaziyamu carbonate / sodium carbonate, ndi kutentha mpaka kutentha kwinakwake;

.

(3) Gwiritsani ntchito njira zolekanitsa kuti mulekanitse osakaniza ndikupeza dimethyl carbonate.

Tiyenera kudziwa kuti kutentha, kupanikizika, nthawi yochita, komanso mtundu ndi kuchuluka kwa chothandizira pakuchita momwe mungagwiritsire ntchito zipatso kuti zikhale zokolola ndi zoyera.

2) Njira ya oxygen oxidation

Kuphatikiza pa njira ya methanol, njira ya oxygen yokongoletsera imagwiritsidwanso ntchito pokonzekera dimethyl carbonate. Njirayi ndiyosavuta kugwira ntchito ndipo imatha kukwaniritsa mosalekeza.

Njira zoyendetsera zenizeni zili motere:

(1) Onjezerani methanol ndi chothandizira, kutentha kwa kutentha kwinaku kosangalatsa;

.

(3) Patulani, dinani, ndikuyeretsa osakaniza a Dimethyl carbonate.

Tiyenera kudziwa kuti njira yotsatsa mpweya imafunikira kuwongolera magawo monga kuchuluka kwa mapangidwe a mpweya, komanso kuchuluka kwa mpweya, komanso kuchuluka kwa zinthu, kusintha zipatso ndi kuyera.

Kumayambiriro kwa nkhaniyi, tingaphunzire za kupanga ndi kukonza njira za dimethyl carbonate. Kuchokera pamapangidwe a molecular to mafotokozedwe atsatanetsatane a machitidwe ndi njira yopangira, tapereka dongosolo lokwanira komanso lolondola. Ndikukhulupirira kuti nkhaniyi ilimbikitse kuphunzira ndi kufufuza pankhaniyi.