Patent ID: 11865492
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 10:
11. An acid gas removal control apparatus that controls an acid gas removing apparatus comprising:
an absorber configured to bring a first gas including carbon dioxide as an acid gas and a lean solution into contact to discharge a rich solution that is the lean solution having absorbed the carbon dioxide, and a second gas including the first gas from which the carbon dioxide has been removed;
a regenerator configured to separate the carbon dioxide from the rich solution discharged by the absorber to discharge the lean solution that is the rich solution separated from the carbon dioxide, and a third gas including the carbon dioxide separated from the rich solution, and
a measuring instrument configured to measure a temperature of the rich solution or the lean solution in the regenerator,
the acid gas removal control apparatus comprising:
a receiver configured to receive the temperature measured by the measuring instrument; and
a controller configured to control resupply of a resupplied solution to the rich solution or the lean solution, based on the temperature received by the receiver,
wherein the controller is configured to:
start the resupply of the resupplied solution in a case where the temperature received by the receiver rises to a first set temperature;
continue the resupply of the resupplied solution in a case where the temperature received by the receiver is higher than the first set temperature; and
terminate the resupply of the resupplied solution in a case where the temperature received by the receiver drops to a second set temperature that is lower than the first set temperature,
a difference between the first set temperature and the second set temperature being 1° C. to 20° C.