Sumitomo Chemical Company, Limited

Renaissance Energy Research Corporation

Hisaaki Miyamoto

Takehiro Nakasuji

Yudai Ota

Takenori Kitaura

Osamu Okada

Hidenobu Kakimoto

Takahiro Ueoka

Masaaki Teramoto

Nobutaka Kodama

Cui Liang

Sadamu Yoshida

Satoshi Shinohara

Nobuchika Iwata

A manufacturing method for a separation membrane element is a manufacturing method for a spiral-wound type separation membrane element including a perforated hollow tube and a laminated body that includes a separation membrane and is wound around the hollow tube. The manufacturing method includes pressing a press member against a portion of the laminated body that is wound around the hollow tube. The pressing presses the press member to satisfy respective relations defined by formulas (1) and (2):0.1&#xd7;1&#x2264;&#x2003;&#x2003;(1), and0.1&#xd7;2&#x2264;&#x2003;&#x2003;(2).

Method and apparatus for manufacturing spiral-wound type separation membrane element

A method for producing a liquid composition formed of a phosphorescent material and an organic solvent includes the steps of: dissolving a phosphorescent material in an organic solvent to prepare a mixed liquid, and filtering the mixed liquid by a filtering device. The filtering device is a housing or holder, a fluororesin membrane filter, and a filter support member. A material of a portion of the housing and holder in contact with the mixed liquid is a metal or a mixture of metal and at least one of glass, fluororesins, polyethylene not containing a phosphorus antioxidant, and polyethylene not containing an oxidized phosphorus antioxidant. A material of a portion of the filter support member in contact with the mixed liquid is at least one of metals, glass, fluororesins, polyethylene not containing a phosphorus antioxidant, and polyethylene not containing an oxidized phosphorus antioxidant.

Method for producing liquid composition

A spiral-wound acid gas separation membrane element () includes a wound body including a separation membrane (), a feed-side channel component (), and a permeate-side channel component () wound in a laminated state around a core tube (). The core tube () has a group of holes for allowing communication between a permeate-side spatial portion defined by the permeate-side channel component () and a spatial portion inside the core tube (), the group of holes being present on an end side of the core tube ().

Spiral-wound acid gas separation membrane element, acid gas separation membrane module, and acid gas separation apparatus

Provided is a method for separating, from a raw gas containing a specific gas, the specific gas using a gas separation membrane module. The gas separation membrane module includes a housing and a gas separation membrane element enclosed in the housing. The gas separation membrane element includes a gas separation membrane including a hydrophilic resin composition layer for selectively allowing for permeation of the specific gas. The method includes the steps of: increasing pressure in an interior of the gas separation membrane module; increasing a temperature in the interior of the gas separation membrane module; and feeding a raw gas to the interior of the gas separation membrane module in that order.

Gas separation method

Provided is a method for separating a specific gas from a raw gas using a gas separation membrane module that includes a gas separation membrane element enclosed in a housing. The element includes a gas separation membrane including a hydrophilic resin composition layer. The method includes: preparing the module; increasing pressure in an interior of the module; increasing a temperature in the interior; and feeding a raw gas to the interior. The layer of the module prepared is adjusted to contain moisture, and a moisture content thereof is an amount that allows an equilibrium relative humidity at a temperature of 23&#xb0; C. of a gas phase portion in the housing to be 10% RH or more. The raw gas feeding step is performed after the preparation step. The pressure increase step and the temperature increase step are performed after the preparation step and before the raw gas feeding step.

Growing community of inventors

Osaka, Japan

Hisaaki Miyamoto