Carbon Dioxide Separation Unit and Carbon Dioxide Separation Method

摘要

The problem is to provide a carbon dioxide separator that, when hydrating carbon dioxide contained in a gas to be treated to separate, can separate carbon dioxide from the gas to be treated at high efficiency and a method therefor. For this, a carbon dioxide separator that includes: a carbon dioxide hydrate formation part where carbon dioxide hydrate is formed with a gas to be treated containing carbon dioxide and water as a raw material; and a carbon dioxide absorption part where high pressure gas that passed through the carbon dioxide hydrate formation part without being hydrated is brought into gas-liquid contact with water to let absorb carbon dioxide in the high pressure gas, in which water in the carbon dioxide absorption part is sent to the carbon dioxide hydrate formation part as the raw material water is provided.