Reliable Hydrogen PSA Unit , Hydrogen Production Unit Decarbonization By PSA
Carbon dioxide is a major by-product of the hydrogen production process and has high commercial value. The carbon dioxide concentration in the wet decarbonization gas can reach over 99% (dry gas). Other impurities include water, hydrogen, etc., which can reach food grade liquid CO2 after purification. It can be purified from hydrogen reforming gas such as CO2 rich natural gas SMR, methanol cracking gas, lime kiln gas, flue gas, synthetic ammonia decarbonization tail gas, etc. Food grade carbon dioxide can be recovered from exhaust gas.
Technical features
The technology is mature, the operation is safe and reliable, and the output is high.
The operation control is reliable and practical.
Technical process
(Take the tail gas of natural gas SMR hydrogen production as an example)
After the raw material is washed with water, the MDEA residue in the raw material gas is removed, and then it is compressed, purified and dried to remove organic substances such as alcohols in the gas and remove peculiar smell at the same time. After distillation and purification, a small amount of low-boiling gas dissolved in CO2 is further removed, and high-purity food-grade CO2 is obtained and sent to storage tanks or filling.
Applicable field
Purification of carbon dioxide from wet decarbonized gases.
Purify carbon dioxide from water gas and semi-water gas.
Purify carbon dioxide from shift gas.
Purification of carbon dioxide from methanol reformate gas.
Purify carbon dioxide from other sources that are rich in carbon dioxide.
Standard
Food grade carbon dioxide standard:
It meets the national standards of GB 10621-2006 "Liquid Carbon Dioxide for Food Additives", GB 1917-94 "Liquid Carbon Dioxide for Food Additives (Fermentation Method)" and Coca-Cola's food-grade carbon dioxide standards.
| Plant size | 1000~100000t/a |
| Purity | 98%~99.9% (v/v) |
| Pressure | ~2.5MPa(G) |
| Temperature | ~ －15˚C |
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