CO2 OR H2S REMOVING SYSTEM AND METHOD OF REMOVING CO2 OR H2S

摘要

A CO2 removing system (10A) comprising a CO2 removing unit (11-1) for low temperature composed of an absorption column (1006-1) for low temperature adapted to bring a flue gas (1002) containing CO2/H2S into contact with an absorptive liquid (1005-1) for low temperature to thereby remove CO2/H2S, a regeneration column (1008-1) for low temperature for regeneration of a rich solution (1007-1) for low temperature, a supply line for rich solution (12-1) for low temperature for feeding the rich solution (1007-1) for low temperature to the regeneration column (1008-1) for low temperature and a supply line for lean solution (13-1) for low temperature for, at the regeneration column (1008-1) for low temperature, feeding a lean solution (1009-1) for low temperature to the absorption column for low temperature (1006-1) and comprising, disposed on the side of flue gas (1002) discharge, a CO2 removing unit (11-2) for high temperature of the construction similar to that of the CO2 removing unit (11-1) for low temperature.