Title:
ガス精製装置
Document Type and Number:
Japanese Patent JP5653768
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a gas purifier purifying a purified gas of high methane concentration in a high yield and reducing the plant size such as an installation space, cleaning water quantity, and pump capacity.SOLUTION: The purified gas of high methane concentration is generated when the purified gas principally consisting of methane is separated from a material gas principally consisting of methane and carbon dioxide by a separation membrane 6. When collection of the purified gas from off-gas is repeated by returning the off-gas to the upstream of the separation membrane 6 through an off-gas return line L1, the purified gas is purified in a high yield. A wash column 5 absorbing carbon dioxide is installed on the downstream side of the separation membrane 6 to wash only the off-gas, so that the amount of gas washed by the wash column 5 is reduced while concentration of carbon dioxide in gas washed by the wash column 5 is increased. In this way, the wash column 5 can be downsized, and the plant size of the gas purifier 100 can be reduced.
Inventors:
三井 昌文
竹田 久人
竹田 久人
Application Number:
JP2011008206A
Publication Date:
January 14, 2015
Filing Date:
January 18, 2011
Export Citation:
Assignee:
住友重機械エンバイロメント株式会社
International Classes:
C07C7/144; C07C9/04; C10L3/10
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Yoshiki Kuroki