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

A composite membrane and multi-channel technology, applied in hydrogen separation, semi-permeable membrane separation, separation methods, etc., can solve the problems of leakage at the graphite gasket, difficulty in application, and different thermal expansion coefficients

Inactive Publication Date: 2011-11-16
大连华海制氢设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
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Effect test

Embodiment 1

[0036] Take multi-channel Al 2 o3 The ceramic tube 1 is used as the support body of the metal-palladium-gold composite membrane 2, and its length is 250 mm, and its diameter is 30 mm. Multi-channel Al 2 o 3 The ceramic tube is composed of 19 channels with a diameter of 4mm. The cross-sectional schematic diagram is shown in figure 1 . Adopt conventional electroless plating method, form continuous palladium film on the inner surface of multi-channel ceramic tube, the cross section 3 of two and the outer surface apart from end 30mm, the thickness of palladium film is about 5 μ m (its profile is as follows figure 2 shown). A graphite sealing ring 4 is used to connect and seal the multi-channel metal-palladium composite film and the metal joint 5 at a distance of about 10 mm from the end of the multi-channel metal-palladium composite film. Then the metal joint 5 is connected with the separator housing 6 to form a hydrogen separator, one end of which is connected with a metal ...

Embodiment 2

[0054] Take multi-channel Al 2 o 3 The ceramic tube 1 is used as the support body of the metal-palladium-silver alloy composite film 2, and its length is 250mm and its diameter is 30mm. Multi-channel Al 2 o 3 The ceramic tube is composed of 7 channels with a diameter of 6 mm. Grooves 8 are respectively opened on the outer surface 10mm away from the two ends, the width of the grooves is 1.5mm, and the depth is 0.15mm. Adopt conventional electroless plating method, form continuous palladium-silver alloy film (its profile is as image 3 shown). The thickness of the palladium-silver alloy film is about 4.8 μm, and the ratio of palladium / silver 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 alloy composite film. Then the metal joint 5 is connected with the separator housing 6 to form a hydrogen...

Embodiment 3

[0065] Take multi-channel Al 2 o 3 The ceramic tube 1 is used as the support body of the metal-palladium composite membrane 2, and its length is 250 mm, and its diameter is 30 mm. Multi-channel Al 2 o 3 The ceramic tube is composed of 19 channels with a diameter of 4mm. There is a slope 9 between the two ends and 40mm away from the end, the diameter at the end is 30.3mm, and the diameter at 40mm away from the end is 30mm. Adopt conventional electroless plating method, form continuous palladium film (its profile is such 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 film and the metal joint 5 at a distance of about 10 mm from the end of the multi-channel metal-palladium composite film. Then the metal joint 5 is connected with the separator housing 6 to form a hydrogen separator, one end of which is connected with a curved metal tube 7 to release th...

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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 metal joints , and then connected to the separator housing 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] Hydrogen is known to have a wide range of uses in refineries and the chemical industry, mainly for the following processes: [0003] The production of synthetic ammonia in the chemical fertilizer industry; [0004] Synthetic methanol; [0005] · Hydrocracking, hydrodesulfurization, hydrofining, hydrodealkylation; [0006] ·Food industry oil hydrogenation and pharmaceutical industry hydrogenation; [0007] · rocket fuel; [0008] Fusion welding; [0009] · Reducti...

Claims

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Application Information

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Patent Type & Authority Patents(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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