CARBON DIOXIDE CAPTURING SYSTEM AND METHOD OF OPERATING THE SAME

摘要

In one embodiment, a carbon dioxide capturing system includes an absorber to discharge an absorption liquid having absorbed carbon dioxide, a regenerator to discharge the absorption liquid having released the carbon dioxide, a first line to introduce the absorption liquid discharged from the absorber to the regenerator, a second line to introduce the absorption liquid discharged from the regenerator to the absorber, and a heat exchanger to exchange heat between absorption liquids flowing in the first and second lines. The system further includes a bypass line to branch from the first line between the absorber and the heat exchanger and introduce the absorption liquid to the regenerator without passing through the heat exchanger, a valve on the bypass line, an instrument to measure a value indicating a state of the regenerator, and a controller to control a degree of opening of the valve based on the measured value.

主权项

1. A carbon dioxide capturing system comprising:
an absorber configured to bring a gas containing carbon dioxide into contact with an absorption liquid capable of absorbing the carbon dioxide, and to discharge the absorption liquid having absorbed the carbon dioxide; a regenerator configured to cause the absorption liquid discharged from the absorber to release the carbon dioxide, and to discharge the absorption liquid having released the carbon dioxide; a first absorption liquid line configured to introduce the absorption liquid discharged from the absorber to the regenerator; a second absorption liquid line configured to introduce the absorption liquid discharged from the regenerator to the absorber; a heat exchanger configured to exchange heat between the absorption liquid flowing in the first absorption liquid line and the absorption liquid flowing in the second absorption liquid line; a bypass line configured to branch from the first absorption liquid line between the absorber and the heat exchanger, and to introduce the absorption liquid to the regenerator without passing through the heat exchanger; at least one absorption liquid valve provided on the bypass line; at least one measuring instrument configured to measure a value that indicates a state of the regenerator; and a controller configured to control a degree of opening of the absorption liquid valve, based on the value measured by the measuring instrument.