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

A bonding method and manufacturing method technology, applied in the field of bonding body, can solve the problems of many restrictions on energy equipment, reduced reaction speed, and large consumption

Pending Publication Date: 2021-03-16
MITSUBISHI CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the reaction rate is lowered at a low temperature, the usual methanol production process is carried out under severe conditions such as 200 to 300 ° C and 5 to 10 MPaG (or a pressure above it), so it consumes a lot of energy when producing methanol. At the same time, the process with many restrictions on equipment

Method used

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

Examples

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Effect test

no. 1 approach

[0130] A first embodiment of the present invention is a bonded body in which a composite of zeolite and an inorganic porous support and a dense member are bonded through lead-free inorganic glass, wherein the thermal expansion of the lead-free inorganic glass is The factor is 30×10 -7 / K above and 90×10 -7 / K or less, and the softening point is 550°C or less.

[0131]

[0132] In this embodiment, lead-free inorganic glass means that the content of lead (Pb) in terms of PbO is 10% by mass or less, preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, especially It is preferably 1% by mass or less, most preferably 0% by mass of inorganic glass.

[0133] The thermal expansion coefficient of the lead-free inorganic glass involved in this embodiment is usually 30×10 -7 / K or more, preferably 40×10 -7 / K or more, more preferably 45×10 -7 / K above, in addition, usually 90×10 -7 / K or less, preferably 80×10 -7 / K or less, mo...

no. 2 approach

[0188] A second embodiment of the present invention is a bonded body obtained by bonding a composite of zeolite and an inorganic porous support and a dense member through inorganic glass, wherein the dense member is a metal member, and the inorganic The coefficient of thermal expansion of glass is 30×10 -7 / K above and 90×10 -7 / K or less, and the softening point is 550°C or less.

[0189]

[0190] The thermal expansion coefficient of the inorganic glass involved in this embodiment is usually 30×10 -7 / K or more, preferably 40×10 -7 / K or more, more preferably 45×10 -7 / K above, in addition, usually 90×10 -7 / K or less, preferably 80×10 -7 / K or less, more preferably 75×10 -7 / K below.

[0191] In this embodiment, the thermal expansion coefficient of the inorganic glass is usually 60% or more, preferably 70% or more, more preferably 80% or more, and usually 200% or less, preferably 150% or less, and more Preferably it is 120% or less. When the thermal expansion coef...

no. 3 approach

[0234] The third embodiment of the present invention is a bonded body formed by bonding a composite of zeolite and an inorganic porous support and a dense member with an inorganic binder, and the thermal expansion coefficient of the inorganic binder after curing is 30×10 -7 / K~90×10 -7 / K.

[0235]

[0236] The inorganic binder used in this embodiment is characterized in that its main component is an inorganic substance, preferably an oxide or a nitride, so even when it is used under high temperature and pressure and further in contact with an organic solvent or an organic gas High airtightness can be maintained even under low conditions, and the durability is excellent.

[0237] In addition, the inorganic binder in the present embodiment is a substance that is bonded by curing through a chemical reaction and does not return to its original state even when heated. Inorganic binders are preferable since they can usually be bonded at 200° C. or lower and thus hardly damage t...

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Abstract

The present invention addresses the problem of providing a bonded body having high airtightness and also having excellent durability under high temperature / high pressure conditions. The problem can besolved by a bonded body comprising a complex of zeolite and an inorganic porous support and a dense member, wherein the complex and the dense member are bonded together with an inorganic glass or aninorganic adhesive agent, the inorganic glass or the inorganic adhesive agent has a thermal expansion coefficient of 30* 10-7 to 90*10-7 / K inclusive and, when an inorganic glass is used, the inorganicglass has a softening point of 550 DEG C or lower. The present invention also addresses the problem of providing a method for producing an alcohol with high efficiency by placing a separation membrane in an alcohol synthesis reactor by a bonding method having good sealing performance and durability in the presence of an alcohol steam under a high temperature / high pressure condition. The problem can be solved by a method for producing an alcohol, comprising reacting a raw material gas containing at least hydrogen and carbon monoxide and / or carbon dioxide in a reactor in the presence of a catalyst to produce the alcohol, wherein the reactor to be used for the reaction is provided with an alcohol-selective permeable membrane that is bonded to a dense member so that the alcohol produced by the reaction can pass and be removed through the selective permeable membrane.

Description

technical field [0001] The present invention relates to a junction body, a separation membrane module including the junction body, and an alcohol production method, wherein the alcohol is preferably methanol. Background technique [0002] A membrane having gas separation capability is usually formed on an inorganic porous support and used in conjunction with a dense member that does not permeate gas. At this time, it is necessary to join in a highly airtight state. When a membrane with gas separation capability is not installed in a reactor for industrial gas separation, but is used for the purpose of experimentally confirming the performance of gas separation, etc., it is only necessary to maintain the bonded state for a short period of time, so it is used An instant adhesive or the like is sufficient for bonding, however, glass is often used for bonding when it is actually installed in a reactor and used stably for gas separation over a long period of time. The bonding w...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/10B01D69/12C07C29/152
CPCB01D69/12C07C29/152Y02P20/50B01D53/228B01D69/145B01D2256/16B01D2256/20B01D2256/22B01D2257/702B01D71/0281B01D65/003C07C31/04B01D71/024B01D2201/0415B01D69/108
Inventor 大贯正道坂本尚之堤内出远藤浩悦藤田直子原美沙久次米正博虎谷信雄
Owner MITSUBISHI CHEM CORP
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