Manufacturing process of ultra-thin-wall vanadium pipe for preparing high purity hydrogen

A manufacturing process and ultra-thin-walled technology, applied in the manufacturing process of ultra-thin-walled vanadium tubes for high-purity hydrogen, in the field of high-purity hydrogen preparation, can solve the problems of large investment in production equipment and low production efficiency, and achieve hydrogen production costs Effect of low, high hydrogen permeability, high application prospects

Active Publication Date: 2018-04-10
BAOJI BOXIN METAL MATERIALS
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Problems solved by technology

At present, although the preparation technology of high-purity hydrogen has made great progr

Method used

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  • Manufacturing process of ultra-thin-wall vanadium pipe for preparing high purity hydrogen
  • Manufacturing process of ultra-thin-wall vanadium pipe for preparing high purity hydrogen

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Embodiment Construction

[0019] In this embodiment, a manufacturing process for preparing ultra-thin-walled vanadium tubes for high-purity hydrogen of the present invention will be further described. The steps of cleaning, cutting and inspecting storage are as follows:

[0020] 1. Purification of vanadium ingots: using vanadium-aluminum alloys as raw materials, they are processed into vanadium-aluminum alloy plates by rolling. The vanadium-aluminum alloy plates are smelted in a secondary electron beam vacuum furnace to obtain vanadium-aluminum ingots with higher vanadium purity, and then rolled into long 800mm×width 100mm×thick (8-10mm) vanadium-aluminum alloy plates are sent to the electron beam vacuum melting furnace for the third time for melting.

[0021] Vacuum the electron beam melting furnace to 5×10 before melting -3 Pa, and water-cooled the water-cooled crucible in the electron beam melting furnace, the water temperature was maintained at 30°C, the electric high voltage was set to 9kv, and t...

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Abstract

The invention belongs to the field of nonferrous metal machining, and particularly relates to a manufacturing process of an ultra-thin-wall vanadium pipe for preparing high purity hydrogen. The manufacturing process mainly comprises the steps of vanadium ingot purification, vanadium ingot forging, heat treatment and pipe blank making, pipe rolling and intermediate annealing, vanadium pipe cleaning, specific cutting and inspection storage. An electron beam furnace is used for refining a high-purity metal vanadium ingot casing multiple times, wherein the ingot casing can be directly rolled and machined, then, the ingot casing can be further rolled into the thin-wall vanadium pipe with the diameter being 6 mm, the vanadium pipe wall thickness is 0.15+/-0.01 mm, and the purity is larger than or equal to 99.95%; the manner that an existing expensive palladium and alloy ultra-thin-wall pipe is used for hydrogen production is replaced, the hydrogen production cost is lower, the hydrogen penetration is higher, the infinite selectivity for hydrogen is achieved, and the higher application prospect is achieved.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing and relates to the preparation of high-purity hydrogen, in particular to a manufacturing process for preparing ultra-thin-walled vanadium tubes for high-purity hydrogen. Background technique [0002] When most hydrogen is used, hydrogen is required to have a high purity (above 99.99%), and many important occasions require high-purity hydrogen (≥99.999%), such as fuel hydrogen for rocket launch, proton exchange membrane fuel cell (proton exchange membrane fuel cell), semiconductor industry, etc. The hydrogen used in fuel cells is of high purity, and impurities in hydrogen will seriously affect its performance, even a small amount of CO, CO 2 , N 2 Other impurities will also poison the battery and fail. However, the vast majority of hydrogen (>90%) is generated from the water vapor of hydrocarbons, and the gas obtained by this method contains CH in addition to hydrogen. 4 ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 韩伟东王玉华
Owner BAOJI BOXIN METAL MATERIALS
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