Effect of converted water-to-gas ratio on gas composition
Thread Content
Everyone knows that in the process of producing methanol from coke oven gas, the conversion process needs to control a certain water-to-gas ratio and water-to-carbon ratio, so that the composition of the gas can be better controlled. But how to control it reasonably and what are the specific indicators? And after increasing the amount of steam, the methane content decreases, but at the same time the composition of carbon dioxide rises too high, which is not conducive to the synthesis of methanol. So within what range can we control both to take into account... I hope an expert can give me some guidance? :P
Adding steam increases the carbon dioxide content, but its increase can inhibit the further generation of carbon dioxide, which means that it can increase the production of carbon monoxide and hydrogen, thereby increasing production.； From another perspective, the increase of carbon dioxide can effectively inhibit the occurrence of synthesis side reactions, and it is also easier to control the synthesis operation. Our conversion generally requires the water-to-carbon ratio to be greater than 3.4. Larger water vapor can also inhibit the generation of converted carbon, but energy consumption will also increase. During production in our factory, it is generally controlled at around 3.5.
The water to carbon ratio is generally greater than the reaction stoichiometry. . . In fact, it is controlled according to specific production.
Adding steam is an endothermic reaction. Adding too much will increase the temperature and waste oxygen.