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Microreactor and method of producing the same

A technology of micro-reactors and manufacturing methods, applied in chemical instruments and methods, chemical/physical/physical-chemical fixed reactors, electrochemical generators, etc., capable of solving obstacles, low reaction efficiency, and reducing operating cost obstacles, etc. , to achieve the effects of reduced manufacturing costs, high thermal conductivity, and high space efficiency

Inactive Publication Date: 2007-09-26
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, the reaction efficiency of conventional microreactors is low, and microreactors with higher reaction efficiency are expected
Furthermore, in the conventional microreactor, there is a possibility that the catalyst may be deactivated by heat during the production stage, and there is a problem that the catalyst that can be used is limited and the management of the production process is difficult.
[0008] Furthermore, in conventional hydrogen production using microreactors, it is necessary to prepare microreactors for each process of hydrogen production (mixing, modification, and CO removal), and to connect these multiple microreactors with piping. Larger space, which poses a significant obstacle to volume reduction in the case of very strict space constraints for housing microreactors such as microfuel cells for portable devices
[0009] In addition, during use, purification and degradation of the catalyst occur in the microreactor for one process, and when the function is lost, it is necessary to replace the whole of the plurality of microreactors including the microreactor with normal function, which has the potential to reduce the running cost. come to the problem of obstacles

Method used

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  • Microreactor and method of producing the same
  • Microreactor and method of producing the same
  • Microreactor and method of producing the same

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Experimental program
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Effect test

no. 2 Embodiment approach

[0097] Fig. 4 is a longitudinal sectional view corresponding to Fig. 2 of another embodiment of the microreactor of the present invention. In FIG. 4, the microreactor 1' of the present invention has a metal substrate 2'; a fine groove portion 3 formed on one side 2'a of the metal substrate 2'; The insulating film 4' on the 2'b; the heating element 5 provided on the surface 2'b of the metal substrate 2' through the insulating film 4'; the catalyst C placed in the micro groove 3; to cover the above micro groove part 3 The state of bonding the cover member 8 on the metal substrate 2'. Further, electrodes 6 and 6 are formed on heating element 5 , and heating element protective layer 7 having openings 7 a and 7 a exposing these electrodes 6 and 6 is provided to cover heating element 5 . Moreover, the said cover member 8 is provided with the raw material introduction port 8a and the gas discharge port 8b.

[0098] This microreactor 1' is the same as the above-mentioned microproces...

Embodiment approach

[0213] 30 and 31 are process diagrams illustrating an embodiment of the microreactor manufacturing method of the present invention.

[0214] In FIG. 30 and FIG. 31 , the microreactor 1 described above will be described as an example. In the manufacturing method of the present invention, first, the fine groove portion 3 is formed on the surface 2a of the metal substrate 2 (FIG. 30A). The fine groove portion 3 can be formed by forming a resist having a specific opening shape on the surface 2a of the metal substrate 2, and using the resist as a mask to perform wet etching to leave the comb-shaped flanges 2A and 2B. The metal substrate 2 is etched to form the metal substrate 2 without micromachining. The material of the metal substrate 2 used may be, for example, the following Al, Si, Ta, Nb, V, Bi, Y, W, Mo, Zr, Hf, etc. which can be anodized by an anodization process.

[0215] Thereafter, the metal substrate 2 on which the fine grooves 3 are formed is anodized to form a metal ...

no. 3 Embodiment approach

[0233] 34 to 38 are process diagrams for explaining an embodiment of the microreactor manufacturing method of the present invention using the above-mentioned microreactor 11 as an example. In addition, each drawing shows the cross-sectional shape at the position corresponding to FIG. 6, FIG.

[0234] In the manufacturing method of the present invention, first, through-holes 19 are formed simultaneously with fine grooves 13 on one surface 12 a of metal substrate 12 ( FIGS. 34A and 34B ). In the fine groove portion 13, a resist having a specific opening pattern corresponding to the fine groove portion 13 is formed on the surface 12a of the metal substrate 12, and a resist having an opening pattern for forming the through hole 19 is formed on the surface 12b of the metal substrate 12. of resist. Then, the metal substrate 12 is half-etched from the surface 12a side by etching the resist as a mask to leave the comb-shaped flanges 12A and 12B to form the fine grooves 13, and at the...

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Abstract

A microreactor comprises a metal substrate having a fine groove on one surface, a heating body disposed on the other surface of the metal substrate through an insulation film, a catalyst carried in the fine groove, and a cover joined to the metal substrate to cover the fine groove and having a raw material inlet port and a gas outlet port. Since such microreactor uses a metal substrate which is high in heat conductivity and low in heat capacity, the efficiency of heat conduction from the heating body to the carried catalyst is high, and the metal substrate is easy to process and simple to produce.

Description

technical field [0001] The invention relates to a micro-reactor used in a reformer for hydrogen production, especially a micro-reactor used to obtain hydrogen by modifying raw materials such as methanol and a manufacturing method of the reactor. Background technique [0002] In recent years, attention has been paid to hydrogen as a fuel from the viewpoint of global environmental protection, because it does not generate gases that cause global warming such as carbon dioxide, and has high energy efficiency. In particular, attention is being paid to high energy conversion rates in fuel cells that can directly convert hydrogen into electricity, and power generation and waste heat heating systems that use the generated heat. So far, fuel cells have been used in special conditions such as space development and ocean development, but recently they have also been promoted for use in distributed power sources for automobiles and households, and fuel cells for portable devices have al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24C01B3/32H01M8/06C01B3/58H01M8/0612
CPCY02E60/50
Inventor 八木裕木原健铃木纲一
Owner DAI NIPPON PRINTING CO LTD