DESIGN SIMULATION ANALYSIS OF MULTIPLE COMPONENT MIXTURE OF CO2 CAPTURE AND PURIFICATION MECHANISMS

Gas Engineering

Oil recovery may be increased by reusing and reinjecting collected and purified CO2 from the generated gas of CO2 flooding, which can also be used for geological storage of CO2. One single CO2 capture and purification system cannot handle the annual growth and large-scale fluctuation in CO2 content in the generated gas with the operation and progress of the CO2 flooding development mode. This research proposes four methods for capturing and purifying CO2 from oil and gas fields in order to help the development of CO2-EOR technology. One-stage membrane separation one-stage hydramine technique, two-stage membrane separation one-stage hydramine method, and one-stage membrane separation two-stage hydramine method are all included in this procedure. And HYSYS software was used to do simulations based on CO2 flooding operating condition data from one particular oilfield. Aside from these factors, the enrichment degree of the CO2 gathered and purified by various methods, as well as its energy consumption and economics, were examined in detail. The following are the findings of the study. Because of the need to achieve the needed purity for reinjected gas when the gas's CO2 content is low, the two-stage alcohol-amine circulation mechanisms must first be put into production before the deacidification of natural gas can be completed. Membrane separation technology is preferable to two-stage alcohol amine circulation methods as CO2 concentrations rise, so that the purified and enriched gas may meet CO2 purity requirements for re-injection. As a consequence of the study findings, engineers may use them to create a strategy for enriching and purifying CO2 from CO2 flooding gas.

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