Are there methods for CO2 absorption and enrichment in gas purification processes? What are the uses of enriched CO2?
Thread Content
Our process aims to capture and concentrate all CO2, achieving zero emissions of greenhouse gases. What kind of processes can be used to achieve this? What other uses can the enriched CO2 have besides being used in tertiary oil recovery and coalbed methane extraction?
Low-temperature methanol washing can recover a large amount of carbon dioxide from gas. Carbon dioxide can be used to synthesize urea. Special microalgae are now also used to absorb carbon dioxide and produce diesel. However, this technology has only been successful in the laboratory; it has not yet been put into industrial use in China.
It can be used as a feed gas for urea production, to produce dry ice, and to transport coal powder into the gasification furnace.
Carbon dioxide can be removed using the thermal potassium alkali method or the low-temperature methanol washing method; it can be used to produce urea, carbamide, dry ice, and food-grade carbonated beverages. Coal gasification can also utilize it as a transport medium.
In our design, carbon dioxide is used as the transport medium; however, the amounts required for producing dry ice or in the food industry are too small. If that isn’t sufficient, it can only be injected underground
At present, the mainly mature industrial method is EOR; other methods are only at the laboratory stage with **too small scales.
There are already several pilot plants for Ca Looping, which can not only separate CO2 but also increase the yield of coal gasification. May I ask which unit the LZ belongs to?
This remains a global challenge, as the amount of carbon dioxide produced after gasification and purification is extremely large; the only options are either using it for oil extraction or burying it underground! I hope better advanced technologies will emerge!
This is carbon dioxide capture and storage, I guess, but I’m not sure what the economic benefits of doing this are. There are many methods available internationally, and it’s unclear which one is more cost-effective.
Previously, it was sent for conversion into urea; now it depends on the subsequent processing techniques used in the factory. In fact, this is the issue of how to utilize CO2.