jälkilämpökäsittelyn

Jälkilämpökäsittely, also known as post-combustion carbon capture and storage (CCS), is a technology used to capture and store carbon dioxide (CO2) emissions produced by power plants and industrial facilities. The process typically involves three main steps: capture, transport, and storage.

In the capture phase, CO2 is separated from the exhaust gases. This can be achieved through various methods, including chemical absorption, where the exhaust gases are passed through a solvent that selectively absorbs CO2, or physical absorption, where the gases are passed through a solid material that adsorbs CO2. Another method is oxy-fuel combustion, where the fuel is burned in a mixture of oxygen and recycled flue gas, resulting in a concentrated CO2 stream.

Once captured, the CO2 is transported to a storage site. This can be done through pipelines, ships, or other transportation methods. The transport phase is crucial as it ensures that the captured CO2 reaches the storage location safely and efficiently.

Finally, the CO2 is stored in underground geological formations, such as depleted oil and gas reservoirs, saline aquifers, or unmineable coal seams. The storage phase is essential for permanent sequestration, preventing the CO2 from re-entering the atmosphere.

Jälkilämpökäsittely has the potential to significantly reduce greenhouse gas emissions and mitigate climate change. However, it also faces challenges, including the high costs of capture and storage technologies, the need for large-scale infrastructure, and the environmental and social impacts of CO2 storage. Research and development are ongoing to overcome these challenges and make jälkilämpökäsittely a viable solution for decarbonizing the energy sector.