Bonded body, separation membrane module equipped with same, and method for producing alcohol

Patent metadata

Field	Value
Publication number	US-12257557-B2
Application number	US-202117165025-A
Country	US
Kind code	B2
Filing date	Feb 2, 2021
Priority date	Aug 2, 2018
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

The present invention addresses the problem of providing a bonded body which has a high airtightness and exhibits excellent durability under high-temperature and high-pressure conditions. This problem is solved by a bonded body in which a complex of a zeolite and an inorganic porous support, and a dense member are bonded together by an inorganic glass or an inorganic adhesive. The inorganic glass or the inorganic adhesive has a thermal expansion coefficient of 30×10 −7 /K to 90×10 −7 /K, and the inorganic glass has a softening point of 550° C. or lower. The present invention also addresses the problem of providing a method of efficiently producing an alcohol by installing a separation membrane in an alcohol synthesis reactor based on a bonding method that gives good sealing performance and durability under high-temperature and high-pressure conditions and in the presence of methanol vapor. This problem can be solved by an alcohol production method of obtaining an alcohol by allowing a raw material gas, which contains at least hydrogen and carbon monoxide and/or carbon dioxide, to react in the presence of a catalyst in a reactor. In the reactor for carrying out the reaction, an alcohol-selective permeable membrane bonded with a dense member is installed, and an alcohol generated by the reaction permeates and is recovered through the selective permeable membrane.

First claim

The invention claimed is:

1. A bonded body, comprising:
a dense member;
a complex of a zeolite and an inorganic porous support; and
a lead-free inorganic glass bonding the dense member and the complex,
wherein the lead-free inorganic glass has a thermal expansion coefficient measured at 30 to 250° C. of 30×10 −7 /K or more and 90×10 −7 /K or less, and a softening point of 397° C. or lower.

2. A bonded body, comprising:
a dense member;
a complex of a zeolite and an inorganic porous support; and
an inorganic glass bonding the dense member and the complex,
wherein the dense member is a metal member, and the inorganic glass has a thermal expansion coefficient measured at 30 to 250° C. of 30×10 −7 /K or more and 90×10 −7 /K or less, and a softening point of 397° C. or lower.

3. The bonded body according to claim 1 , wherein the inorganic glass comprises SnO and/or B 2 O 3 .

4. A bonded body, comprising:
a dense member;
a complex of a zeolite and an inorganic porous support; and
an inorganic adhesive bonding the dense member and the complex and having a post-curing thermal expansion coefficient of 30×10 −7 /K to 90×10 −7 /K,
wherein the post-curing thermal expansion coefficient is an average value at 30 to 300° C. and the inorganic adhesive is solidified by a chemical reaction and adheres to the zeolite, inorganic porous support and dense member and is non-invertible to an original state when heated.

5. A bonded body, comprising:
a dense member;
a complex of a zeolite and an inorganic porous support; and
an inorganic adhesive bonding the dense member and the complex,
wherein a difference in thermal expansion coefficient between the dense member and the inorganic adhesive after cured is 50×10 −7 /K or less, the after cured thermal expansion coefficient is an average value at 30 to 300° C., and the inorganic adhesive is solidified by a chemical reaction and adheres to the zeolite, inorganic porous support and dense member and is non-invertible to an original state when heated.

6. The bonded body according to claim 4 , wherein the inorganic adhesive comprises a metal alkoxide.

7. The bonded body according to claim 1 , wherein a bonded part between the complex and the dense member is covered with a sealing film.

8. The bonded body according to claim 7 , wherein the sealing film is a silica film.

9. The bonded body according to claim 1 , wherein the dense member has a thermal expansion coefficient measured at 30 to 250° C. of 30×10 −7 /K or more and 200×10 −7 /K or less.

10. A method of using a bonded body, in which the bonded body according to claim 1 is used under a high-temperature condition of 100° C. to 500° C. and/or a high-pressure condition of 0.5 to 10 MPa.

11. A separation membrane module, comprising the bonded body according to claim 1 .

12. A reactor, comprising the separation membrane module according to claim 11 .

13. A bonding method for bonding a complex of a zeolite and an inorganic porous support to a dense member, comprising:
bonding a complex of a zeolite and an inorganic porous support to a dense member with a lead-free inorganic glass,
wherein the lead-free inorganic glass has a thermal expansion coefficient measured at 30 to 250° C. of 30×10 −7 /K or more and 90×10 −7 /K or less, and a softening point of 397° C. or lower.

14. A bonding method for bonding a complex of a zeolite and an inorganic porous support to a dense member, comprising:
bonding a complex of a zeolite and an inorganic porous support to a dense member with an inorganic glass,
wherein the dense member is a metal member, and the inorganic glass has a thermal expansion coefficient measured at 30 to 250° C. of 30×10 −7 /K or more and 90×10 −7 /K or less, and a softening point of 397° C. or lower.

15. The bonded body according to claim 1 , wherein the lead-free inorganic glass has a softening point of 357° C. or lower.

Assignees

• Mitsubishi Chem Corp
• Japan Tech Research Association Of Artificial Photosynthetic Chemical Process

Inventors

• Onuki Masamichi
• Sakamoto Naoyuki
• Tsutsuminai Susumu
• Endou Koetsu
• Fujita Naoko
• Hara Misa
• Kujime Masahiro
• Toratani Nobuo

Classifications

• B01D71/0281

  Zeolites · CPC title

• C07C31/04

  Methanol · CPC title

• C07C29/152

  characterised by the reactor used · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D71/024

  Oxides · CPC title