Title:
ガス精製装置とガス精製方法
Document Type and Number:
Japanese Patent JP6562543
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable simple and space-saving equipment to efficiently produce high-concentration purified gas.SOLUTION: A gas purification apparatus 1 is provided in which a first adsorption tower 6A and a second adsorption tower 6B are connected to piping 2 for supplying raw material gas from a raw material gas tank 4. One of the first adsorption tower 6A and the second adsorption tower 6B is supplied with raw material gas to adsorb carbon dioxide gas, and separates and purifies primary purified gas while the other carbon adsorption tower discharges carbon dioxide gas. Such a process is alternately repeated, so that the primary purified gas is alternately produced in the first adsorption tower 6A and the second adsorption tower 6B. In a pressure equalization step, the primary purified gas purified in the first adsorption tower 6A and the second adsorption tower 6B is returned to the piping 2 upstream from the raw material gas tank 4 through bypass piping 2b. The primary purified gas is mixed with raw material gas and is supplied to the first adsorption tower 6A or the second adsorption tower 6B again to produce the primary purified gas of a higher methane concentration and, at the same time, recovery rate of the purified gas is increased.SELECTED DRAWING: Figure 1
Inventors:
Susumu Ishida
Mamoru everyone
Miyake Hidenari
Mamoru everyone
Miyake Hidenari
Application Number:
JP2015130656A
Publication Date:
August 21, 2019
Filing Date:
June 30, 2015
Export Citation:
Assignee:
Maesawa Industry Co., Ltd.
International Classes:
B01D53/047; C10L3/00
Domestic Patent References:
| JP55147119A | ||||
| JP6079134A | ||||
| JP3270710A | ||||
| JP2001162126A |
Attorney, Agent or Firm:
Nishizawa Kazumi
Kenichi Kawabuchi
Shiro Suzuki
Masatake Shiga
Suzuki Mitsuyoshi
Kenichi Kawabuchi
Shiro Suzuki
Masatake Shiga
Suzuki Mitsuyoshi