The Research Of Catalyst Using Methanol Synthesis And Optimal Operation Conditions

This paper investigate preparation of copper and zinc precursors and alumina supports. The result of experiment show that precursors using new way to make present more (Cu,Zn)2CO3(OH)2 crystal phase and Cu/Zn ratio in the surface of sample is bigger, the activity of catalyzer increase 10%～28%. Because of the supports using new method making, the catalyzer have more big specific surface area and the activity and increase 8%～16% and the activity after overheat increase 26%～55%. The FC306 catalyzer of the new preparing using to synthesize carbinol access or equate catalyse capability of three same kinds of importing catalyzer. NC307 catalyzer using to synthesize carbinol made use of theory production of investigating C306 and FC306 catalyzer, this catalyzer put up more high space-time yield and thermal stability. The reaction temperature, reaction pressure, gas hour space velocity, H/C ratio and CO content in the inlet gas stream, etc., must be properly controlled in order to keep the methanol production capacity in the methanol synthesis.The industrial application results show that catalyst gives very high cativity and good thermal stability for the methanol synthesis in the reaction temperature range of 230～270℃. In the operating pressure range of 4.0～6.0MPa studied, the methanol productivity increases with the increase of reaction pressure. The space-time yield increases with the increase of the gas hour space velocity from 8000～15000h-1, 15000 h-1of gas hour space velocity is used in the industrial operation. The H/C ratio in the industrial production unit should not be too high and the content should be properly increased.