A natural gas decarburization and CO2 purification process method and system by physical absorption-low temperature extractive distillation
By combining physical absorption and low-temperature extractive distillation methods for natural gas decarbonization, the problems of high hydrocarbon loss, low purity, and high energy consumption in existing technologies have been solved. This has enabled efficient and low-energy natural gas decarbonization and CO2 purification, while avoiding the risk of freezing and blockage.
Patent Information
- Application Number
- CN202610788224.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing natural gas decarbonization technologies suffer from problems such as high hydrocarbon loss, low product purity, complex processes, and high energy consumption, making it difficult to achieve decarbonization and CO2 purification with low hydrocarbon loss, high CO2 purity, low energy consumption, and avoidance of freezing and blockage risks.
The natural gas decarbonization process combines physical absorption and low-temperature extractive distillation. The raw gas is purified by physical absorption tower, and the components that cannot be accurately separated by physical absorption are separated by low-temperature distillation. CO2 and C2 components are separated by extractive distillation, which reduces hydrocarbon loss and avoids freezing blockage.
This improved CO2 removal rate, reduced regeneration energy consumption, decreased solvent circulation and equipment corrosion, and achieved a highly efficient, energy-saving and environmentally friendly natural gas decarbonization process, resulting in high-purity CO2 products.
Smart Images
Figure CN122399512A_ABST