METHOD FOR SEPARATION-RECOVERING CARBON-DIOXIDE FROM BLAST FURNACE GAS

摘要

PPROBLEM TO BE SOLVED: To provide a method for separation-recovering carbon-dioxide from blast furnace gas with which the separation-recovering of the carbon-dioxide and the reusing of the energy of the blast furnace gas, are efficiently performed. PSOLUTION: The blast furnace gas taken out from the blast furnace, is introduced into an absorbing tower and the carbon-dioxide in the blast furnace gas, is absorbed into absorbing solution in the above absorbing tower, and a part of the blast furnace gas which removes the carbon-dioxide, is used as fuel which performs the generation of electricity by burning under high pressure condition, and a part of the other part of the blast furnace gas removing the carbon-dioxide, is introduced into a gas-turbine electric generator, and burnt under high pressure and used to the fuel which performs the generation of electricity. The absorbed solution which absorbs the carbon-dioxide in the absorbing tower, is heated with the heat of the exhaust gas of the gas-turbine, and the heated-absorbed solution is introduced into a regenerating tower and the carbon-dioxide is removed from the above absorbed solution in the regenerating tower and the above absorbed solution which removes the carbon-dioxide, is circulated into the absorbing tower. PCOPYRIGHT: (C)2010,JPO&INPIT