Title:
DEVICE AND METHOD FOR GENERATING METHANE GAS AND INVOLVING REMOVAL OF CARBON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2024/034541
Kind Code:
A1
Abstract:
Provided are a device and a method that are for generating methane gas, that involve removal of carbon dioxide, and that are capable of efficiently generating high-concentration methane gas even when a microorganism is used. This methane gas generation device involves removal of carbon dioxide in which a hydrogen-containing gas A and a CO2-containing gas B are supplied (C) to an anaerobic living organism reaction tank 1 for performing a microorganism treatment, and a methane gas-containing treated gas E is discharged. The device is characterized by: being provided with, in the reaction tank 1, a fixed bed 20 that is loaded with a carrier to which a microorganism is attached; and having a circulation gas line through which at least a portion of the treated gas E is circulated (D) to the reaction tank.
Inventors:
KATSU YOSEI (JP)
TANAKA TOSHIHIRO (JP)
KAWASAKI YU (JP)
TANAKA TOSHIHIRO (JP)
KAWASAKI YU (JP)
Application Number:
PCT/JP2023/028606
Publication Date:
February 15, 2024
Filing Date:
August 04, 2023
Export Citation:
Assignee:
EBARA JITSUGYO CO LTD (JP)
International Classes:
C12P5/02; B01D53/62; C12M1/04; C12M1/107
Foreign References:
| JPS6349999B2 | 1988-10-06 | |||
| JP2022506756A | 2022-01-17 | |||
| JP2015134313A | 2015-07-27 | |||
| JP2018126090A | 2018-08-16 | |||
| JPH06169783A | 1994-06-21 |
Other References:
BUGANTE, E.C. ; SHIMOMURA, Y. ; TANAKA, T. ; TANIGUCHI, M. ; OI, S.: "Methane production from hydrogen and carbon dioxide and monoxide in a column bioreactor of thermophilic methanogens by gas recirculation", JOURNAL OF FERMENTATION AND BIOENGINEERING., SOCIETY OF FERMENTATION TECHNOLOGY., JP, vol. 67, no. 6, 1 January 1989 (1989-01-01), JP , pages 419 - 421, XP025754675, ISSN: 0922-338X, DOI: 10.1016/0922-338X(89)90148-7
南大介ほか. 循環ガス型生物脱硫法によるバイオガスの精製システムの検討. 第55回下水道研究発表会講演集. 2018, pp. 872-874, non-official translation (MINAMI, Daisuke et al. Study of Biogas Purification System Using Circulating Gas-Type Biological Desulfurization Method. Proceedings of 55th Meeting of Japan Sewage Works Association.)
南大介ほか. 循環ガス型生物脱硫法によるバイオガスの精製システムの検討. 第55回下水道研究発表会講演集. 2018, pp. 872-874, non-official translation (MINAMI, Daisuke et al. Study of Biogas Purification System Using Circulating Gas-Type Biological Desulfurization Method. Proceedings of 55th Meeting of Japan Sewage Works Association.)
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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