Mitsubishi Heavy Industries Limited

Kyushu Electric Power Co., Inc.

Tomoh Akiyama

Yukio Tanaka

Ryuji Yoshiyama

Masayuki Eda

Hiroyuki Shibata

Takehiko Nishida

Hidehiko Tajima

Katsuo Hashizaki

Kazuyuki Adachi

Shinji Murakami

Kouji Kurayama

Yoshihiro Wada

Katsuaki Kobayashi

A natural gas refining apparatus including a first separation membrane unit including a first separation membrane; and a second separation membrane unit provided in a subsequent stage of the first separation membrane unit. The second separation membrane unit includes a second separation membrane that allows an amine solution to circulate through the second separation membrane unit, and the natural gas refining apparatus refines raw natural gas containing COby passing the raw natural gas through the first and second separation membrane units, separating CO-rich gas with the first and second separation membranes, and absorbing COwith the amine solution circulating through the second separation membrane unit.

Natural gas refining apparatus and system

A system and method for separating COfrom natural gas, which ensure that no clogging or deterioration occurs in a gas separation membrane even after the gas separation membrane is used to remove carbon dioxide from the natural gas under conditions in which the natural gas is pressurized. First, an HS remover removes hydrogen sulfide from raw natural gas. Then, a compressor pressurizes the natural gas from which HS has been removed. After that, a cooler cools the pressurized natural gas so as to condense components that are a part of the natural gas. A gas/liquid separator removes the condensed components, and a COseparator, including a separation membrane for separating COremoves COfrom the natural gas from which the condensed components have been removed. An expander, which shares a drive shaft with the compressor, expands the natural gas from which COhas been removed and recovers energy therefrom.

System and method for separating carbon dioxide from natural gas

It is an object to provide a battery system whose life can be extended. A cell pack having at least one lithium secondary battery that uses a manganese-based cathode material and a control unit that controls charging and discharging of the cell pack are provided, and the control unit controls charging and discharging within a low-degradation voltage range that is set on the basis of a target cell degradation rate.

Power storage system

Growing community of inventors

Tokyo, Japan

Tomoh Akiyama