Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Koshito Fujita

Mitsuru Udatsu

Hideo Kitamura

Daigo Muraoka

Satoshi Saito

Yasuhiro Kato

Masatoshi Hodotsuka

Tetsuya Kaseda

Shinji Murai

Yusuke Handa

Hayato Morigaki

Takashi Ogawa

Takehiko Muramatsu

Osamu Shibasaki

Ryosuke Shibata

A carbon dioxide capture system according to an embodiment includes: a carbon dioxide capturer, an absorbing liquid regenerator, a first washer, a second washer, and an absorbing liquid line. The first washer washes the combustion exhaust gas discharged from the carbon dioxide capturer with a mist of a first cleaning liquid sprayed by a first spray to capture the amine accompanying the combustion exhaust gas. The absorbing liquid line supplies the absorbing liquid regenerated in the absorbing liquid regenerator as the first cleaning liquid to the first spray. The first cleaning liquid sprayed by the first spray is supplied as the absorbing liquid to the carbon dioxide capturer.

Carbon dioxide capture system and method of operating carbon dioxide capture system

According to one embodiment, a gas processing equipment includes an oxygen removerthat removes oxygen contained in exhaust gas G, and a gas processing devicethat processes pretreated exhaust gas G (P), from which the oxygen has been removed by the oxygen remover, with a carbon dioxide absorbent solvent S as a treatment agent.

Gas processing equipment and gas processing method, and carbon dioxide capture system and carbon dioxide capture method

In one embodiment, an acid gas removing apparatus includes an absorber configured to bring a first gas including an acid gas and a lean solution into contact to discharge a rich solution that is the lean solution having absorbed the acid gas, a regenerator configured to separate the acid gas from the rich solution discharged by the absorber to discharge the lean solution that is the rich solution separated from the acid gas, and a measuring instrument configured to measure a temperature of the rich or lean solution in the regenerator. Furthermore, an acid gas removal control apparatus that controls the acid gas removing apparatus includes a receiver configured to receive the measured temperature, and a controller configured to control resupply of a resupplied solution to the rich or lean solution or removal of an acid component from the rich or lean solution, based on the received temperature.

Acid gas removal control apparatus, acid gas removal control method, and acid gas removing apparatus

A carbon dioxide capture system according to an embodiment includes a carbon dioxide capturer, a first washer, and a second washer. The first washer includes a spray configured to spray first cleaning liquid supplied under first pressure. The second washer includes a cleaning liquid diffuser configured to diffuse and drop second cleaning liquid supplied under second pressure lower than the first pressure.

A carbon dioxide capture system includes a first capture system and a second capture system. The first capture system including a first absorber that causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a first absorbing liquid. The second capture system causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a second absorbing liquid. The second rich liquid releases carbon dioxide at a lower temperature than the first rich liquid.

Carbon dioxide capture system and a method of operating a carbon dioxide capture system

In one embodiment, a carbon dioxide capturing system includes an absorber configured to include a first contact portion that brings a combustion exhaust gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, cause the absorbing liquid to absorb at least a portion of the carbon dioxide in the combustion exhaust gas at the first contact portion, and release the combustion exhaust gas. The system further includes a washing apparatus configured to include a second contact portion that brings the combustion exhaust gas released from the first contact portion of the absorber into contact with a washing liquid, and configured such that the combustion exhaust gas and the washing liquid are individually fed to an upstream side of the second contact portion.

Carbon dioxide capturing system and exhaust gas processing method

An acid-gas capturing apparatus according to an embodiment includes an absorption unit configured to discharge an absorption-unit exhaust gas, and a regeneration unit configured to discharge a regeneration unit exhaust gas. The regeneration unit exhaust gas is compressed in a compression unit. The absorption-unit exhaust gas or the regeneration unit exhaust gas before it is compressed by the compression unit is cleaned in a first cleaning unit by means of a first cleaning liquid. A compression-condensate liquid, which is generated by the compression of the regeneration unit exhaust gas in the compression unit, is mixed into the first cleaning liquid through a first compression-condensate-liquid line whose one end is connected to the compression unit.

Acid-gas capturing apparatus and acid gas capturing method

In accordance with an embodiment, a carbon dioxide capturing apparatus includes a first absorbing unit, a regeneration unit, a water washing capturing unit, and a pre-amine capturing unit. The first absorbing unit brings a gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, and discharges the absorbing liquid which has absorbed carbon dioxide as a rich liquid. The regeneration unit releases a carbon dioxide gas from the rich liquid sent from the first absorbing unit. The water washing capturing unit captures the amine compound entrained in a decarbonated treatment gas sent from the first absorbing unit. The pre-amine capturing unit receives part of the rich liquid from the first absorbing unit, and traps the amine compound entrained in the decarbonated treatment gas by bringing the decarbonated treatment gas from the first absorbing unit into countercurrent contact with the part of the rich liquid.

Carbon dioxide capturing apparatus, carbon dioxide capturing method, and amine compound capturing method

A carbon dioxide capture system according to an embodiment includes an absorber, a stripper, and a heater. The absorber includes a first cleaning unit and a second cleaning unit. The first cleaning unit uses first cleaning liquid to clean combustion exhaust gas discharged from a carbon dioxide capturer and captures amine flowing together with the combustion exhaust gas. The second cleaning unit uses second cleaning liquid to clean the combustion exhaust gas discharged from the first cleaning unit and captures amine flowing together with the combustion exhaust gas. The heater heats the first cleaning liquid to a temperature higher than the temperature of an upper portion of the carbon dioxide capturer and of the second cleaning liquid.

Carbon dioxide capture system

In one embodiment, a carbon dioxide separating and recovering system includes an absorption tower to cause carbon dioxide to be absorbed in an absorbing solution, a regeneration tower to release the carbon dioxide from the absorbing solution, and at least one measuring apparatus to measure an ultrasound propagation speed in the absorbing solution. Each of the at least one measuring apparatus calculates a dissolved carbon dioxide concentration in the absorbing solution, based on a temperature measured by a temperature measuring unit, the ultrasound propagation speed measured by an ultrasound propagation speed measuring unit, and a correlation expression which shows a relationship between the dissolved carbon dioxide concentration and the ultrasound propagation speed in the absorbing solution, and is changed according to the temperature of the absorbing solution. The carbon dioxide separating and recovering system controls the system, based on the dissolved carbon dioxide concentration calculated by the measuring apparatus.

Growing community of inventors

Yokohama, Japan

Koshito Fujita