Processing

Please wait...

Settings

Settings

Goto Application

1. WO2022071047 - SEPARATION MEMBRANE, AND SEPARATION MEMBRANE MODULE

Publication Number WO/2022/071047
Publication Date 07.04.2022
International Application No. PCT/JP2021/034744
International Filing Date 22.09.2021
IPC
B01D 69/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
B01D 69/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/08 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
08Hollow fibre membranes
B01D 69/10 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
B01D 69/12 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
12Composite membranes; Ultra-thin membranes
B01D 71/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
02Inorganic material
CPC
B01D 69/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
B01D 69/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/08
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
08Hollow fibre membranes
B01D 69/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
B01D 69/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
12Composite membranes; Ultra-thin membranes
B01D 71/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
02Inorganic material
Applicants
  • 東レ株式会社 TORAY INDUSTRIES, INC. [JP]/[JP]
Inventors
  • 山下祐樹 YAMASHITA, Yuki
  • 三原崇晃 MIHARA, Takaaki
Priority Data
2020-16747502.10.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SEPARATION MEMBRANE, AND SEPARATION MEMBRANE MODULE
(FR) MEMBRANE DE SÉPARATION, ET MODULE DE MEMBRANE DE SÉPARATION
(JA) 分離膜および分離膜モジュール
Abstract
(EN) In the past, fibrous separation membranes having separation layers that have inorganic materials as main components have been presented with problems in that, due to the effects of stress caused by stretching, contraction, etc., during use of a separation membrane in a separation membrane manufacturing step or a separation/purification step, crack-form defects readily appear in a separation layer, these defects occurring even more readily under high-pressure conditions. Moreover, when a crack-form defect produced in a separation layer is larger than an article subject to separation, the article subject to separation leaks out through the defect. Therefore, there is a demand to suppress such defects. The present invention is a fibrous separation membrane having a separation layer that has an inorganic material as a main component, wherein the smaller angle from among angles formed by a separation layer orientation direction and the fiber axis of the separation membrane is 3-87 degrees, where the separation layer orientation direction is a direction perpendicular to a peak intensity bearing, and the peak intensity bearing is a bearing at which the average light intensity at 18.0-20.3 nm-1 in a diffraction vector q reaches a maximum peak intensity in wide-angle X-ray diffraction measurement in which measurement is carried out upon incidence of X-rays on the separation layer from a direction normal to the fiber axis of the separation membrane.
(FR) Dans le passé, des membranes de séparation fibreuses comprenant des couches de séparation qui comprennent des matériaux inorganiques en tant que composants principaux ont été présentées avec des problèmes en ce que, en raison des effets de contrainte provoqués par l'étirement, la contraction, etc., pendant l'utilisation d'une membrane de séparation dans une étape de fabrication de membrane de séparation ou une étape de séparation/purification, des défauts sous forme de fissures apparaissent facilement dans une couche de séparation, ces défauts se produisant encore plus facilement dans des conditions de haute pression. De plus, lorsqu'un défaut sous forme de fissures produit dans une couche de séparation est plus grand qu'un article soumis à une séparation, l'article soumis à une séparation fuit à travers le défaut. Par conséquent, il existe une demande pour supprimer de tels défauts. La présente invention concerne une membrane de séparation fibreuse comprenant une couche de séparation qui comprend un matériau inorganique en tant que composant principal, l'angle le plus petit parmi les angles formés par une direction d'orientation de couche de séparation et l'axe de fibre de la membrane de séparation étant de 3 à 87 degrés, la direction d'orientation de la couche de séparation étant une direction perpendiculaire à un palier d'intensité de pic, et le palier d'intensité de pic est un palier au niveau duquel l'intensité lumineuse moyenne à 18,0-20,3 nm-1 dans un vecteur de diffraction q atteint une intensité de pic maximale dans une mesure de diffraction de rayons X à grand angle dans laquelle une mesure est effectuée lors de l'incidence de rayons X sur la couche de séparation à partir d'une direction perpendiculaire à l'axe de fibre de la membrane de séparation.
(JA) 無機物を主成分とする分離層を有する繊維状の分離膜は、分離膜の製造工程や分離・精製工程における膜使用中の膨張、収縮等による応力の影響により、分離層に亀裂状の欠陥が発生しやすく、高圧条件下において、これらの欠陥がより発生しやすい課題があった。分離層に発生した亀裂状の欠陥が分離対象物よりも大きい場合、分離対象物が欠陥を通って漏洩するため、欠陥を抑制することが求められている。本発明は、無機物を主成分とする分離層を有する、繊維状の分離膜であって、前記分離膜の繊維軸の法線方向から、分離層へX線を入射して測定される広角X線回折測定において、散乱ベクトルqの18.0~20.3nm-1における平均光強度が、最大ピーク強度となる方位をピーク強度方位として、前記ピーク強度方位に垂直な方向を分離層の配向方向としたときに、前記分離層の配向方向と前記分離膜の繊維軸とのなす角のうち、小さい方の角度が3~87度である、分離膜である。
Latest bibliographic data on file with the International Bureau