Reviewing the Old to Discover the New (Series 4)

Common industrial gases: air gas, water gas, mixed gas, semi-water gas. Water gas is commonly used in ammonia synthesis. Since the methanol synthesis process is carried out in sequence with ammonia production, the production capacity is represented by the sum of the ammonia production and methanol production, that is, the so-called \"total ammonia\" production. With the production capacity of \"total ammonia\" remaining unchanged, the methanol production capacity is expressed as the alcohol-to-ammonia ratio (methanol output/total ammonia output), and this ratio can be adjusted within a certain range. The method of adjustment generally involves changing the H2/CO ratio in the feed gas; more precisely, it is (H2–CO2)/(CO+CO2) = f. Therefore, in the hydrazine process, in addition to means to adjust the hydrogen-to-nitrogen ratio during ammonia synthesis, there must also be control mechanisms capable of adjusting the f-value. Generally, in the production of alcohols, the CO content in the feed gas is adjusted by changing the conversion rate of CO in the shift reaction, or by creating a shortcut between the inlet and outlet of the shift reactor, in order to maintain the alcohol-to-ammonia ratio within a certain range.

What are the common industrial gases? What kind of gas is used to produce synthetic ammonia? Why is the gas used in ligroin production a low-nitrogen gas? Water gas, semi-water gas

Coal gas, carbonization gas, pressurized gasification gas, water gas, generator gas, blast furnace gas

Industrial gas includes: air gas, water gas, mixed gas, and semi-water gas.

Common industrial gases include coke oven gas, generator gas, water gas, and semi-water gas. The gas used in the production of synthetic ammonia is semi-water gas. Low-nitrogen gas is used in ligroin production to reduce the nitrogen content

1. Semi-water gas, natural gas; 2. Purified gas, whose main components are hydrogen and nitrogen