Method for separating carbon dioxide from mixed gas

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United States of America Patent

PATENT NO 4587114
SERIAL NO

06475258

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Abstract

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A solid form adsorbent of carbon monoxide, that is obtained by the process including the following steps. First, copper salts or copper oxide is stirred in a solvent. Then, into the solution or suspension thus obtained, active carbon is added. Finally, the solvent is removed by means of pressure reduction, distillation, etc. The carbon monoxide adsorbent produced according to this invention adsorbs carbon monoxide rapidly when it is brought into contact with a mixed gas. The adsorbed carbon monoxide can be readily separated and discharged through either heating the carbon monoxide adsorbent to above 60.degree. C. or reducing the partial pressure of carbon monoxide. The carbon monoxide obtained in accordance with the present invention is stable relative to the water content in the mixed gas, and it is capable of separating carbon monoxide directly from the mixed gas containing the water. Also, the separated carbon monoxide does not contain the vapor of the solvent from the carbon monoxide adsorbent. Therefore, it is not necessary to provide equipment to collect the solvent vapor. Furthermore, this carbon monoxide adsorbent does not produce corrosive gases, etc. The carbon monoxide adsorbent obtained by using copper (II) salts or copper (II) oxide is also stable relative to sulfur content in the mixed gas.

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Patent Owner(s)

Patent OwnerAddress
HIDEFUMI HIRAIMEGURO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirai, Hidefumi 14-10, 1-Chome, Yutenji, Meguro-Ku, Tokyo, JP 18 268
Komiyama, Makoto Tokyo, JP 32 287
Wada, Keiichiro Tokyo, JP 8 184

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