PROCESS FOR PRODUCING TOWN GAS

Title:

PROCESS FOR PRODUCING TOWN GAS

Document Type and Number:

WIPO Patent Application WO/2000/073404

Kind Code:

A1

Abstract:

A process for producing a town gas which comprises evaporating dimethyl ether, heating it in the presence of steam in a heating furnace (33), and introducing it into a multi-tubular reforming reactor (35) to contact it with a reformation catalyst, thereby producing a gas containing methane as a main component, carbon dioxide, carbon monoxide and hydrogen; then introducing the resultant reformed gas into an adsorption unit (37) of pressure-swing type to remove carbon dioxide by adsorption, and introducing it to a methanation reactor (38) to methanate the carbon monoxide and carbon dioxide, thereby producing a raw material gas for a town gas; and finally adding dimethyl ether to it, which is the raw material used in this process, as a calorific value-enhancing agent, thereby adjusting the calorific value of the resultant town gas. The process requires no desulfurization units due to its use of a raw material containing no sulfur, exhibits high transportation efficiency compared to a process using methanol as a raw material, and does not require excess energy upon evaporation, and hence is also suitable for the commercialization of small-to-medium scale.

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Inventors:

ISHIGAKI SHINYA (JP)
YAMADA NOBUHIRO (JP)
MASHIKO YOSHINORI (JP)
YOSHIMI SHOUJI (JP)
YONEOKA MIKIO (JP)
HASHIMOTO OSAMU (JP)
ISHIWADA AKIRA (JP)
OTSUKA HISASHI (JP)

Application Number:

PCT/JP2000/003048

Publication Date:

December 07, 2000

Filing Date:

May 12, 2000

Export Citation:

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Assignee:

JGC CORP (JP)
MITSUBISHI GAS CHEMICAL CO (JP)
ITOCHU CORP (JP)
ISHIGAKI SHINYA (JP)
YAMADA NOBUHIRO (JP)
MASHIKO YOSHINORI (JP)
YOSHIMI SHOUJI (JP)
YONEOKA MIKIO (JP)
HASHIMOTO OSAMU (JP)
ISHIWADA AKIRA (JP)
OTSUKA HISASHI (JP)

International Classes:

B01J23/46; B01J23/76; B01J23/78; C01B3/32; C01B3/52; C01B3/58; C10G11/00; C10K3/02; C10K3/04; C10L3/06; C10L3/08; (IPC1-7): C10L3/06; C01B3/22

Domestic Patent References:

WO1999017875A1

1999-04-15

Foreign References:

EP0761942A1

1997-03-12

Other References: