Methanol Weekly Topic: What are the components of the gas entering the synthesis tower, and how can yield be increased? 2...

The main components of the methanol feed gas are CO, CO2, and H2, with small amounts of other gas components such as CH4 and N2 also present. CH4 and N2 do not participate in the methanol synthesis process; these gases that do not take part in this reaction are called inert gases, and they accumulate within the synthesis system.

The main components of the gas entering the methanol synthesis tower are CO, CO2, and H2; it also contains small amounts of gases such as CH4, N2, and H2S. CH4 and N2 do not participate in the methanol synthesis reaction and are known as inert gases; it is necessary to reduce the amount of these inert gases that do not take part in the reaction in order to increase the yield

The components of the gas entering the synthesis tower are hydrogen, carbon monoxide, carbon dioxide, nitrogen, methane, a small amount of methanol gas, an extremely small amount of oxygen, and argon. Gases that do not participate in the reaction are generally useless (of course, it is still necessary to maintain a certain amount of such gases to prevent the reaction from becoming too intense and damaging the catalyst). To increase the yield, it is important to control the composition of the gases; first, the hydrogen-to-carbon ratio of the fresh gas should be kept between 2.05 and 2.1, while the ratio for the gas entering the reactor should be higher, around 4. Additionally, the amount of CO should generally not exceed twice that of CO2. As for reducing the inert gas content, venting should be carried out appropriately when a certain level is reached; methane separation in the preceding stage must effectively isolate methane in order to reduce its concentration, or hydrogen-rich gas recovered from hydrogen processing can be added.