Combustion
Waste to Energy
Carbon Capture (CC) for your Waste to Energy plant
Capturing carbon dioxide (CO2) from the flue gas produced in hard-to-abate industries and properly storing it (a process called carbon capture and storage or CCS) is a key component of most governments’ net-zero strategies. Waste to Energy (WtE) is an example of a difficult-to-abate industry. The reason is that waste must be handled and the alternative treatment option, landfill, has a worse climate-change impact than WtE. This is true even without the inclusion of CCS, as solid waste landfills release methane, which has far larger greenhouse gas (GHG) potential than CO2.
Kanadevia Inova develops and manufactures carbon dioxide capture technologies such as amine scrubbing. Amine scrubbing is ideal for reducing CO2 concentrations in flue gas while producing high-quality CO2.
Carbon Capture technology by Kanadevia Inova
CO2 in water is slightly acidic. This fact can be exploited for separation. When flue gas is washed with a amine-containing solvent (in the lower section of the absorber column), CO2 is absorbed by the solvent. Certain amines have shown themselves to be effective solvents. Given that absorption works best at low temperatures, the flue gas is initially cooled using a direct contact cooler. The solvent, loaded with CO2, is pumped to the stripper, where it is boiled out. The solvent is then cooled again and returned to the absorber, resulting in a closed, resource-saving solvent cycle.
To meet air emissions regulations, flue gas is sent downstream from the absorption section through a cleaning section. Depending on the off-take requirements, final CO2 treatment may include compression, liquefaction and additional cleaning processes.