CARBON DIOXIDE RECOVERY METHOD AND RECOVERY DEVICE

摘要

A carbon dioxide recovery method and a recovery apparatus are capable of decreasing energy for regenerating an absorbing liquid to reduce operating cost. The apparatus has an absorption column that the absorbing liquid absorbs carbon dioxide of a gas, a regeneration column heating and regenerating the absorbing liquid with discharge of carbon dioxide, and a circulation system circulating the absorbing liquid. The absorbing column has first and second absorbing sections, and gas is supplied to the second absorbing section through the first absorbing section. The regeneration column has a first regeneration section having an external heating implement and a second regeneration section heated by the gas discharged from the first regeneration section. The circulation system has a first circulation path circulating between the first absorption section and the second regeneration section and a second circulation path circulating between the second absorption section and the first regeneration section, separately.