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Multi-channel metal palladium or palladium alloy composite membrane hydrogen separator

A multi-channel, metal palladium technology, applied in hydrogen separation, semi-permeable membrane separation, separation methods, etc., can solve problems such as difficult application, leakage at the graphite gasket, and different thermal expansion coefficients

Inactive Publication Date: 2010-02-10
大连华海制氢设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the multi-channel palladium composite film and the metal shell are completely fixed together, and because the thermal expansion coefficients of the multi-channel palladium composite film and the metal shell are different, in the process of heating and cooling, there will inevitably be a certain degree of friction at the graphite gasket. leakage, making it difficult to practically apply

Method used

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  • Multi-channel metal palladium or palladium alloy composite membrane hydrogen separator
  • Multi-channel metal palladium or palladium alloy composite membrane hydrogen separator
  • Multi-channel metal palladium or palladium alloy composite membrane hydrogen separator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take multi-channel Al 2 O 3 The ceramic tube 1 is used as the support of the metal palladium-gold composite membrane 2 and has a length of 250 mm and a diameter of 30 mm. Multi-channel Al 2 O 3 The ceramic tube is composed of 19 holes, the diameter of the holes is 4mm, and the cross-sectional diagram is shown figure 1 . Using conventional electroless plating method, a continuous palladium film is formed on the inner surface of the multi-channel ceramic tube, the cross section 3 at both ends and the outer surface 30mm away from the end. The thickness of the palladium film is about 5μm (the cross section is as figure 2 Shown). A graphite sealing ring 4 is used to connect and seal the multi-channel metal palladium composite membrane with the metal joint 5 at a distance of about 10 mm from the end of the outer surface of the multi-channel metal palladium composite membrane. Then connect the metal joint 5 and the separator shell 6 to form a hydrogen separator, one end of whi...

Embodiment 2

[0054] Take multi-channel Al 2 O 3 The ceramic tube 1 is used as the support of the metal palladium-silver alloy composite membrane 2 and has a length of 250 mm and a diameter of 30 mm. Multi-channel Al 2 O 3 The ceramic tube is composed of 7 holes with a diameter of 6mm. There are grooves 8 on the outer surface 10mm away from both ends. The groove width is 1.5mm and the depth is 0.15mm. Using conventional electroless plating methods, a continuous palladium-silver alloy film is formed on the inner surface of the multi-channel ceramic tube 1, the cross-section 3 at both ends, and the outer surface 30mm from the end (the cross-section is as image 3 Shown). The thickness of the palladium-silver alloy film is about 4.8 μm, and the palladium / silver ratio is 74 / 26. A graphite sealing ring 4 is used to connect and seal the multi-channel metal palladium-silver alloy composite film 2 and the metal joint 5 at the groove 8 on the outer surface of the multi-channel metal palladium silver...

Embodiment 3

[0065] Take multi-channel Al 2 O 3 The ceramic tube 1 is used as the support of the metal palladium composite membrane 2 and has a length of 250 mm and a diameter of 30 mm. Multi-channel Al 2 O 3 The ceramic tube is composed of 19 pores with a diameter of 4mm. There is a slope 9 from the end to 40 mm from the end, the diameter at the end is 30.3 mm, and the diameter at the end 40 mm is 30 mm. Using the conventional electroless plating method, a continuous palladium film is formed on the inner surface of the multi-channel ceramic tube, the cross section 3 at both ends, and the outer surface 30mm away from the end (the cross section is as Figure 4 Shown). The thickness of the palladium film is about 5.2 μm. A graphite sealing ring 4 is used to connect and seal the multi-channel metal palladium composite membrane with the metal joint 5 at a distance about 10 mm from the end of the outer surface of the multi-channel metal palladium composite membrane. Then connect the metal join...

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Abstract

The invention discloses a multi-channel metal palladium or a palladium alloy composite membrane hydrogen separator. A graphite sealing ring is adopted to connect and seal the multi-channel metal palladium or the palladium alloy composite membrane and a metal joint at any position in a section of an outer surface membrane. In order to better realize sealing connection, any position in a section where the outer surface and one end have a 3-50mm distance on the adopted multi-channel metal palladium or palladium alloy composite membrane is provided with a groove or a gradient exists along the outer surface membrane and is formed at a position having a 10-80mm distance from the end through concaving, so that the multi-channel metal palladium or the palladium alloy and the metal joint can be insealing connection more closely. The metal joint and a separator shell are connected to form the hydrogen separator. When the metal joint and the separator shell are connected to form the hydrogen separator, at least one metal joint at one end of the two ends is connected with a metal pipe capable of buffering the stress of expansion caused by heat and contraction caused by cold so as to release the stress in the heating and cooling processes. The hydrogen separator has the advantages of obviously low device investment and separation cost for medium and small-scale hydrogen separation.

Description

Technical field [0001] The invention relates to a metal palladium or palladium alloy composite membrane hydrogen separator with a multi-channel structure. Specifically, one or more multi-channel metal palladium or palladium alloy composite membranes are used to connect and seal with a metal joint , And then connect with the separator shell through the metal joint to form a hydrogen separator. The hydrogen separator is more suitable for small and medium-scale hydrogen separation. Background technique [0002] As we all know, hydrogen has a wide range of uses in refineries and the chemical industry, and is mainly used in the following processes: [0003] ·The fertilizer industry produces synthetic ammonia; [0004] ·Synthetic methanol; [0005] ·Hydrocracking, hydrodesulfurization, hydrorefining, hydrodealkylation; [0006] ·Food industry oil hydrogenation and pharmaceutical industry hydrogenation; [0007] ·Rocket fuel; [0008] ·Fusion welding; [0009] ·Reduction of metal ore; [0010] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/10B01D69/04B01D53/22C01B3/50
Inventor 徐恒泳李春林唐春华
Owner 大连华海制氢设备有限公司
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