DEVICE AND METHOD FOR BIOLOGICAL DESULFURIZATION OF BIOGAS

WIPO Patent Application WO/2014/002926

A1

The purpose of the present invention is to provide a device and method for biological desulfurization of biogas with which efficiently treating high-load hydrogen sulfide and converting the treated hydrogen sulfide to sulfuric acid eliminates in-device blockage, eliminates steps such as cleaning, and enables low-cost treatment. The present invention is a biological desulfurization device characterized in that: provided are a biogas inflow line (5) for allowing biogas to flow in from an end of a biological desulfurization column (1), a treated gas outflow line (7) for discharging treated gas to a subsequent stage of a packed bed (1a) which is another end of the biological desulfurization column and bears microorganisms, and a circulated gas line (8) for circulating some of the treated gas to the end of the biological desulfurization column where the biogas flows in; and, in an arithmetic unit (11), a hydrogen sulfide load quantity is calculated from measurement values of a hydrogen sulfide concentration meter (3) and a gas flowmeter (4) provided to the biogas inflow line (2), a circulated gas amount regulatory mechanism (9) being actuated according to the results thereof to adjust the amount of circulated gas passing through the circulated gas line (8).

TANAKA TOSHIHIRO (JP)
MINAMI DAISUKE (JP)
ODAGIRI TADASHI (JP)

PCT/JP2013/067186

January 03, 2014

June 24, 2013

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EBARA JITSUGYO CO LTD (JP)

C10L3/10; B01D53/18; C02F11/04

JP2006143780A	2006-06-08
JP2010022965A	2010-02-04
JPH10128042A	1998-05-19

TAMURA Chikashi et al. (JP)
Tamura 爾 (JP)

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