METHOD OF METHANOL PRODUCTION AND PLANT FOR PRODUCTION OF METHANOL Russian patent published in 2001 - IPC

FIELD: methods and plants for production of methanol. SUBSTANCE: method involves production of methanol by gas-phase oxidation of hydrocarbon-containing gas at initial temperature up to 500 C, pressure up to 10 MPa and oxygen content of not more 8 vol.% in reactor reaction zones. Supplied separately and successively to reactor mixing zone are compressed and hot hydrocarbon-containing gas and compressed oxygen-containing gas. Process includes additional supply of oxygen-containing gas to subsequent mixing zone; cooling of reaction mixture; separation of methanol from cooled reaction mixture; supply of effluent gases to initial hydrocarbon-containing gas or for burning. Reaction mixture is cooled by 70-150 C before entering each subsequent stage of oxidation and hardened in the last reaction zone by reducing temperature of reaction mixture at least by 200 C for time equaling 0.1 time of its residence in reaction zone. Going-off liquid oxygen-containing products, after separation of methanol, are supplied to the first mixing zone of reactor. Plant for methanol production has source of hydrocarbon-containing gas, compressor and heater, separate source of oxygen-containing gas with compressor, reactor with successively alternating mixing and reaction zones provided with pipelines, recuperative heat exchanger, condenser, separators, pipeline for supply of effluent gases. Recuperative heat exchangers are installed at outlet ends of all reaction zones with pipelines. Plant has a pipeline for supply of going-off liquid oxygen-containing products to the first mixing zone of reactor. EFFECT: higher conversion degree of hydrocarbon-containing gas and yield of methanol. 7 cl, 1 dwg, 1 tbl, 6 ex