Process for the production of methanol

专利名称：Process for the production of methanol发明人：Yasushi Hiramatsu,Osamu Hashimoto,Shoji

Uematsu,Toshio Koseki

申请号：US08/329828申请日：19941027公开号：US05512599A公开日：19960430

摘要：A process for the production of methanol, which exhibits high energy efficiencyand permits the production of methanol with apparatus of which the production capacitycan be increased, the process comprising a primary reforming step of catalyticallyreacting a hydrocarbon with steam, a partial oxidation step of partially oxidizing a gas fedfrom the above primary reforming reaction step by adding an oxygen gas, a secondaryreforming step of catalytically reacting a gas fed from the above partial oxidation stepwith steam, a step of using a high- temperature gas obtained from the secondaryreforming reaction step, as a heat source for the primary reforming step, a synthesis gaspreparation step of separating steam from the gas used as the above heat source toprepare a synthesis gas, and a methanol synthesis step of introducing the synthesis gasinto a methanol synthesis reactor using a fluid catalyst, wherein:< P>

the molar ratio of hydrogen to carbon oxides in the feed gas to into the methanolsynthesis reactor, represented by [H. sub.2 /(2CO+ 3CO.sub.2)], is set at from 1.0 to 2.7,

the molar ratio of CO.sub.2 /CO in the feed gas into the methanol synthesis reactor isset at from 0.6 to 1.2,

a gas from the methanol synthesis reactor is partially introduced into the methanolsynthesis reactor as a circulating gas together with the synthesis gas.

申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

代理机构：Wenderoth, Lind & Ponack

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