Decarburization solution
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What are the common solutions used for decarbonization in industry? Which is better, an MDEA solution or a potassium carbonate solution?
In addition to what you mentioned, there are also propylene carbonate, NHD, methanol (low-temperature methanol washing), selexol solvent, and others.
Initially, there were also methods such as the washing method and the hot potassium method
Reply to 1# zgm728: It’s hard to say which one is better; one can only say that a certain manufacturing process is more suitable for a particular production workflow, as well as considering factors such as investment and energy savings.
There is a difference between low-nitrogen fertilizers and high-nitrogen fertilizers; many high-nitrogen fertilizers are produced using the thermal potassium alkali method or low-temperature methanol washing. In fact, there is no such thing as a better or worse method – the choice depends on the requirements of the carbon removal process. Older factories used to produce ammonium bicarbonate as a by-product, and nowadays some still produce methanol as a by-product; this is also a type of carbon removal process.
As a supplement, ACT-1 is also available as a decarburization solution. In comparison, MDEA has the best effect. But it has the highest cost.
Physical absorption: pressurized water washing method, pyrrolidine method, Selexol method, low-temperature methanol method, propylene carbonate method. Chemical absorption methods: hot potassium alkali method, alkylolamine method; among these, the phenylphthalein method and the reactive MDEA method are the most commonly used. Physical adsorption method, pressure swing adsorption method, membrane separation method
Carbon propyl liquid, NHD, methanol (low-temperature methanol washing), selexol, cyclobutyl solvent, etc. It mainly depends on the requirements of your decarbonization process to determine the appropriate setup; compared to potassium carbonate solutions, MDEA is more energy-efficient.
OK..... Thank you everyone!