How to increase carbon dioxide production by low-temperature methanol washing
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As the title states, is there any other way to increase carbon dioxide production by appropriately reducing the circulation volume and reducing the outlet carbon dioxide pressure while ensuring the cooling capacity? Please give me some advice.
Increase the amount of stripping nitrogen and reduce the operating pressure of the carbon dioxide product tower. You can also add a second-stage carbon dioxide product flash tank.
Increasing the amount of sulfur-rich methanol that is matched to the CO2 product tower after flash evaporation can also increase CO2 production.
Molecular sieve technology is now very mature. The improvement of CO2 production can be achieved through the following ideas. The exhaust gas from the exhaust scrubber is absorbed by molecular sieves, because molecular sieves mainly absorb water, CO2 and olefins (the molecular sieves used in air separation (alumina, silica gel) have this characteristic, other molecular sieves may have other characteristics, I think this is applicable). When the exhaust gas passes through the molecular sieve, water and CO2 are mainly absorbed. After analysis, relatively pure CO2 will be obtained. (I heard that the purity of oxygen produced by molecular sieves can reach 99%).