| 摘要 |
A method of obtaining methanol consists in contacting a gas mix, containing carbon monoxide, carbon dioxide and hydrogen, with a copper-containing catalyst at a temperature of 190-290 DEG C and a pressure of 5-10 MPa in two stages. During the first stage the copper-containing catalyst is contacted with a gas mix containing 5-30 % by volume of carbon monoxide, 0.3-20 % by volume of carbon dioxide at a volume ratio between the carbon monoxide and the carbon dioxide of 0.25-87 and at a volume ratio between the hydrogen and the total of carbon oxides of 2-3.65. The first stage is carried out in one through-flow reactor or in a cascade of such reactors at a bulk speed of the initial gas mix of 4,500-100,000 h<-1>, thus obtaining, after the first stage, a gas mix containing carbon monoxide, carbon dioxide, methanol vapor and 0.02-1.38 % by volume of water vapor. The methanol and water vapors are removed from the gas mix and the remaining gas mix, which contains the carbon monoxide, the carbon dioxide and the hydrogen, is fed to the second stage which is carried out in a reactor at a bulk speed of 7,000-15,000 h<-1> thus obtaining, after the second stage, a mix containing the carbon monoxide, the carbon dioxide, the hydrogen and the methanol and water vapors, the methanol and water vapors being then removed from the gas mix. |
