| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control system capable of collecting reactive medium from a reactor of a chemical heat storage device even when the temperature of exhaust gas is low.SOLUTION: An exhaust emission control system 1 having a chemical heat storage device 10 for heating a heated object (for example, a dispersion device 9) by using heat generated by chemical reaction between a reactive material and ammonia in a reactor 10c, includes a warming container 11 arranged around the reactor 10c, a pressurizing compressor 13 for compressing exhaust gas, a first pipe 12 via which the compressed exhaust gas flows into the warming container 11, a second pipe 14 via which the exhaust gas returns from the warming container 11 to an exhaust pipe 3, and a valve 15 arranged in the second pipe 14. When the temperature of the exhaust gas is low to preclude the collection of ammonia from the reactor 10c, the valve 15 is closed to pressurize the internal of the warming container 11 so that the temperature-rising warming container 11 heats the reactor 10c. |
