Collecting CO2Currently, there are three main methods used to recover CO2 from large industrial facilities or from power plants: 1 / gas collection after burning, 2 / gas collection before burning and 3 / gas recovery. Burning coal with pure oxygen.In power plants, existing commercial CO2 recovery systems can operate at 85-95% efficiency. CO2 capture techniques have not yet been applied to plants with capacities greater than 500 MW.Collect gas after burningThis is the process of separating CO2 from the chimney after burning fossil fuels or biomass.There are many commercial technologies that can take this step, some of which use chemical solvents capable of capturing large amounts of CO2 from chimneys.Collect air before burningThis process separates CO2 from the fuel by combining it with gas or steam to ignite and store the separated CO2 stream.Currently, people often use technology to convert natural gas by steam, in which steam is used to separate hydrogen from natural gas.Gathering gas by burning fuel with oxygenIn this process, oxygen will be used as a gas to release a mixture of gases with the main component of CO2 and water easily separated, then CO2 can be compressed, transported and stored.