Kawasaki Jukogyo Kabushiki Kaisha

Shimadzu Corporation

Kawasaki Thermal Engineering Co., Ltd.

Takatoshi Shoji

Takeshi Okumura

Tomoyuki Ogino

Yoshiharu Nonaka

Shohei Nishibe

Masatoshi Hirokawa

Tatsuya Watanabe

Kazuo Tanaka

Akira Kimura

Seiji Yamashita

Kunihiko Nakajima

Hidefumi Saito

Eiichi Harada

Junichi Kitajima

Noboru Takikawa

Yoshihiko Takemura

Yoshiaki Takatani

Teruo Kishimoto

Kazuto Kamazawa

Toshinori Muraoka

Norihiko Kumada

Akihiro Murakami

Takashi Nakamoto

Shigenobu Okajima

A carbon dioxide separation and recovery system includes: an adsorption reactor, which adsorbs, by an adsorbent, carbon dioxide contained in a to-be-treated gas, discharges the to-be-treated gas from which the carbon dioxide has been removed, and discharges the adsorbent that has adsorbed the carbon dioxide; a desorption reactor, which receives the adsorbent discharged from the adsorption reactor, condenses desorbing steam on the adsorbent to cause carbon dioxide to desorb from the adsorbent, and then discharges the adsorbent; and an adsorbent dryer, which receives the adsorbent discharged from the desorption reactor, dries the adsorbent until a water content ratio thereof becomes a predetermined value greater than or equal to a water content ratio limit by causing, with use of a drying gas, condensation water contained in the adsorbent to evaporate as steam, and then discharges the adsorbent.

Carbon dioxide separation and recovery system and method

A treatment tower of a carbon dioxide separation system includes a treatment container of a tower shape, having inner space which is virtually dividable into a regeneration treatment chamber, drying treatment chamber, and adsorption treatment chamber arranged in this order from the top to the bottom, by two hindrances which are upper and lower hindrances and hinder the downward movement of the adsorbent while maintaining the bedded (layered) flow of the adsorbent, a first passage member formed with ejection holes which eject a gas used in a treatment in each of the treatment chambers to a lower portion of each of the treatment chambers, and a second passage member formed with a gas discharge hole which discharges the gas having contacted the adsorbent from an upper portion of each of the treatment chambers. In the two treatment chambers on the lower side, gas discharge holes are formed below the hindrances.

Carbon dioxide separation system

A carbon dioxide separation and recovery system includes an adsorption tower, a regeneration tower, and a drying tower. The adsorption tower causes a target gas to contact an adsorbent to adsorb carbon dioxide contained in the target gas to the adsorbent. The regeneration tower causes a normal-pressure wet gas which is a gas mixture of the carbon dioxide and steam to contact the adsorbent having adsorbed the carbon dioxide to desorb the carbon dioxide from the adsorbent. The drying tower dries the adsorbent. In addition, the carbon dioxide separation and recovery system includes a compressor that compresses the carbon dioxide, and an ejector that expands the carbon dioxide discharged from the compressor while suctioning negative-pressure steam, to generate the wet gas.

Carbon dioxide separation and recovery system

The system includes adsorbent-packed towersandfilled with HS adsorbent which triethanolamine is supported by activated carbon. Mixed gas derived from a synthesis gas containing COand HS at about 40&#xb0; C. is supplied to the adsorbent-packed towersandthrough a line. Valvesandare opened, valvesandare closed, valvesandare closed, and valvesandare opened to perform adsorption of HS contained in the gas to be treated in the adsorbent-packed towerin a dry state and to perform desorption of HS in the adsorbent-packed tower. When adsorption of HS contained in the gas to be treated is performed in the adsorbent-packed towerand desorption of HS is performed in the adsorbent-packed tower, the valves, andare closed and the valves, andare opened.

Method and device for separating hydrogen sulfide and hydrogen production system using the same

There is provided a moving bed type CO2 separation apparatus that is capable of achieving steady recovery of CO2, and that is energy-efficient. An adsorbent hopper that supplies a CO2 adsorbent of a moving bed to an adsorption tower that adsorbs CO2 from a treatment-target gas is provided. Below the adsorption tower, a moving bed-type regeneration tower for regenerating the CO2 adsorbent having adsorbed CO and a moving bed-type drying tower that dries the regenerated CO2 adsorbent are provided. Desorption-purpose steam generated from the drying tower is supplied to the regeneration tower. By allowing the desorption-purpose steam to be condensed on the CO2 adsorbent, CO2 is desorbed from the CO2 adsorbent. Thus, CO2 adsorbent forming a moving bed is used in a circulating manner through the CO2 separation apparatus, and the energy used for drying the condensed water contained in the CO2 adsorbent is used for desorbing CO2.

Carbon dioxide separation apparatus

A COrecovery method and apparatus for desorbing and recovering carbon dioxide with low energy consumption from a gas discharged from a power generation plant having a boiler and a steam turbine. The adsorption and the desorption of carbon dioxide are performed alternately in two COabsorbers and located in a COrecovery apparatus, which each hold a carbon dioxide adsorbent. When carbon dioxide is desorbed, steam discharged from an outlet of a steam turbine of a power generation plant is partially branched before introduced into a condenser, and sent to a steam compressor. The partially branched steam is compressed in this compressor, and then sent to a cooling device. By cooling, the steam for desorption is prepared. The steam prepared in the cooling device is supplied into a COabsorber to desorb carbon dioxide. Accordingly, waste steam, before it is introduced into the condenser, is usable for desorption.

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A carbon dioxide separation method and a carbon dioxide separation apparatus capable of maintaining a carbon dioxide adsorption capacity for a long term by collecting an amine compound that evaporates during an operation of the apparatus and reloading the amine compound onto a carbon dioxide adsorbent. An amine collector and an amine aqueous solution preparation device are connected to an adsorbent-packed tank packed with a carbon dioxide adsorbent. An amine compound that evaporates from the carbon dioxide adsorbent during an operation of the apparatus is collected by the amine collector into the amine aqueous solution preparation device. The collected amine compound is reloaded onto the carbon dioxide adsorbent via a supply line.

Carbon dioxide separation method and apparatus

A fuel cell-atmospheric-pressure turbine hybrid system uses the thermal energy of a cell exhaust gas discharged from an atmospheric-pressure, high-temperature fuel cell effectively, does not need any additional emergency protective device, and enables the use of lightweight, easy-to-process structural and piping materials to reduces the cost. The fuel cell-atmospheric-pressure turbine hybrid system includes: a combustorfor burning an exhaust gas Gdischarged from an atmospheric-pressure, high-temperature fuel cell; a turbinein which a combustion gas Gdischarged from the combustorexpands and the pressure of the combustion gas Gdrops to a negative pressure; a compressorfor compressing an exhaust gas Gdischarged from the turbineto increase the pressure of the exhaust gas G; and a heat exchangerfor transferring heat from the high-temperature exhaust gas Gdischarged from the turbineto low-temperature air A to be supplied to the fuel cell

Fuel cell-atmospheric-pressure turbine hybrid system

A carbon dioxide adsorption element rapidly adsorbs a large amount of carbon dioxide, and regenerates amine groups for carbon dioxide adsorption rapidly and uniformly with high-temperature air. The carbon dioxide adsorption elementfor adsorbing carbon dioxide in air comprises a foil-like or plate-like support member, a porous aluminum oxide filmcovering the support member, and the amine groupsclinging to the inner surface of each poreof the filmfor carbon dioxide adsorption. The filmis formed by oxidation of aluminum or aluminum alloy. The depth direction of each poreof the film is the thickness direction of the support member

Carbon dioxide adsorption apparatus and adsorption element and method for manufacture thereof

In order to depress a crystallization temperature of an absorbent composition for an absorption refrigeration system without depressing vapor absorption ability, cesium chloride is added to an alkaline solution containing lithium bromide as a main component, in an amount of 0.01 to 15% by weight, based on the weight of an aqueous 64% lithium bromide solution.

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Kobe, Japan

Takatoshi Shoji