RU2011116340A

RU2011116340A - METHOD OF PRODUCING METHANOL

Info

Publication number: RU2011116340A
Application number: RU2011116340/04A
Authority: RU
Inventors: Елена Витальевна Писаренко (RU); Елена Витальевна Писаренко; Виталий Николаевич Писаренко (RU); Виталий Николаевич Писаренко; Джангир Ахмедович Абаскулиев (RU); Джангир Ахмедович Абаскулиев
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2012-11-10
Also published as: RU2472765C1

Abstract

1. Способ получения метанола из синтез-газа, включающий стадию компремирования синтез-газа, стадию каталитической конверсии синтез-газа в метанол в реакторном узле, состоящем из нескольких каталитических реакторов, включающую операции нагрева и конверсии синтез-газа в метанол в каждом реакторе, операцию охлаждения продуктов реакции и выделения метанола после каждого реактора, операцию утилизации «хвостовых газов», отличающийся тем, что процесс синтеза метанола проводят при различных давлениях и с загруженными в реакторы катализаторами с переменной и/или постоянной активностью при аксиальном направлении потока в одних каталитических реакторах и/или радиальном в других в интервале температур 160-290°С, давлений 3-15 МПа, объемных скоростей потока 500-10000 ч-1. ! 2. Способ по п.1, отличающийся тем, что для реакторов с аксиальным направлением потока катализатор загружается в трубное и/или межтрубное пространство реактора. ! 3. Способ по п.1, отличающийся тем, что синтез-газ подают в первый каталитический реактор синтеза метанола при мольном отношении водорода к оксиду углерода в диапазоне от 1.5:1-8:1. ! 4. Способ по п.1, отличающийся тем, что синтез-газ с давлением 1.6 МПа и более подают в первый каталитический реактор синтеза метанола без предварительного компремирования синтез-газа. ! 5. Способ по п.1, отличающийся тем, что синтез-газ при мольном отношении водорода к оксиду углерода менее 2.06 делят на 2 потока, один из которых обогащают водородом в массообменном элементе мембранного типа и подают в первый каталитический реактор, а второй поток, обедненный водородом, смешивают с газовым потоком, покидающим каталитический реактор 1. A method of producing methanol from synthesis gas, including the stage of compression of synthesis gas, the stage of catalytic conversion of synthesis gas to methanol in a reactor unit consisting of several catalytic reactors, including heating and conversion of synthesis gas to methanol in each reactor, operation cooling the reaction products and methanol evolution after each reactor, a tail gas utilization operation, characterized in that the methanol synthesis process is carried out at various pressures and with catalysts loaded into the reactors and with variable and / or constant activity with axial flow direction in some catalytic reactors and / or radial in others in the temperature range of 160-290 ° C, pressures of 3-15 MPa, volumetric flow rates of 500-10000 h-1. ! 2. The method according to claim 1, characterized in that for reactors with axial flow direction, the catalyst is loaded into the tube and / or annular space of the reactor. ! 3. The method according to claim 1, characterized in that the synthesis gas is fed into the first catalytic methanol synthesis reactor with a molar ratio of hydrogen to carbon monoxide in the range from 1.5: 1-8: 1. ! 4. The method according to claim 1, characterized in that the synthesis gas with a pressure of 1.6 MPa or more is fed into the first methanol synthesis catalytic reactor without prior compression of the synthesis gas. ! 5. The method according to claim 1, characterized in that the synthesis gas with a molar ratio of hydrogen to carbon monoxide of less than 2.06 is divided into 2 streams, one of which is enriched with hydrogen in a membrane-type mass transfer element and fed to the first catalytic reactor, and the second stream, depleted in hydrogen, mixed with the gas stream leaving the catalytic reactor

Claims

1. A method of producing methanol from synthesis gas, including the stage of compression of synthesis gas, the stage of catalytic conversion of synthesis gas to methanol in a reactor unit consisting of several catalytic reactors, including heating and conversion of synthesis gas to methanol in each reactor, operation cooling the reaction products and methanol evolution after each reactor, a tail gas utilization operation, characterized in that the methanol synthesis process is carried out at various pressures and with catalysts loaded into the reactors and with variable and / or constant activity in the axial direction of flow in some catalytic reactors and / or radial in others in the temperature range 160-290 ° C, pressures 3-15 MPa, volumetric flow rates 500-10000 h ^-1 .

2. The method according to claim 1, characterized in that for reactors with axial flow direction, the catalyst is loaded into the tube and / or annular space of the reactor.

3. The method according to claim 1, characterized in that the synthesis gas is fed into the first catalytic methanol synthesis reactor with a molar ratio of hydrogen to carbon monoxide in the range from 1.5: 1-8: 1.

4. The method according to claim 1, characterized in that the synthesis gas with a pressure of 1.6 MPa or more is fed into the first methanol synthesis catalytic reactor without prior compression of the synthesis gas.

5. The method according to claim 1, characterized in that the synthesis gas with a molar ratio of hydrogen to carbon monoxide of less than 2.06 is divided into 2 streams, one of which is enriched with hydrogen in a membrane-type mass transfer element and fed to the first catalytic reactor, and the second stream, depleted in hydrogen, mixed with a gas stream leaving the methanol synthesis catalytic reactor and sent to a power plant to generate steam and / or electrical energy.