Advanced intercooling and recycling in CO₂absorption

摘要

The present invention relates to a gas purification system for removal of acidic gases from a gas stream. The system comprises an absorption unit arranged for receiving a gas stream and contacting it with a wash solution stream and a cooling unit in fluid communication with the absorption unit. The cooling unit receives wash solution enriched with acidic gases from a first withdrawal level of said absorption unit, cools the enriched wash solution, and provides cooled, enriched wash solution to a first reintroduction level of the absorption unit upstream of the withdrawal level. The ratio of withdrawn wash solution is 10-90% of the total wash solution stream.

主权项

1. A gas purification system for removal of acidic gases from a gas stream, comprising:
an absorption unit arranged for receiving a gas stream and contacting it with a wash solution stream; a cooling unit in variable fluid communication with the absorption unit, wherein the cooling unit receives wash solution enriched with acidic gases from a first withdrawal level of the absorption unit, cools the enriched wash solution, and provides cooled, enriched wash solution to a first reintroduction level of the absorption unit upstream of the first withdrawal level; wherein the cooling unit further receives wash solution enriched with acidic gases from a second withdrawal level of the absorption unit, and provides cooled, enriched wash solution to a second reintroduction level corresponding to the second withdrawal level of the absorption unit; and wherein the second reintroduction level corresponds to the first reintroduction level.