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A special reaction kettle for the preparation of hydrofluoric acid

A reaction kettle and hydrofluoric acid technology, applied in the direction of fluorine/hydrogen fluoride, etc., can solve the problems of high metal ion content, inability to remove, affect the quality of hydrofluoric acid, etc., to achieve the effect of ensuring quality and reducing metal ions

Inactive Publication Date: 2011-12-14
无锡东风新能源科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] The reaction kettle for the preparation of existing hydrofluoric acid directly uses steel cylinder or full-carbon steel, and the reactor is produced under the direct heating of water or steam, and the metal ions of steel cylinder or full-carbon steel will enter in the hydrofluoric acid, As a result, the content of metal ions in hydrofluoric acid is high, reaching 1ppm, which is only suitable for corrosion in diodes. The products are AR grade, GR grade, and EL grade
The industry adopts stainless steel kettle body or graphite kettle body, and sets the additive inlet on the kettle body, and realizes the control of metal ions in hydrofluoric acid in the kettle by adding additives. This method will not lead to metal ions in hydrofluoric acid Increase, to a certain extent improve the quality of hydrofluoric acid, but the metal ions doped in the raw material of anhydrous hydrogen fluoride cannot be completely removed by additives, thus affecting the quality of hydrofluoric acid

Method used

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  • A special reaction kettle for the preparation of hydrofluoric acid
  • A special reaction kettle for the preparation of hydrofluoric acid

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Embodiment Construction

[0007] See figure 1 , the present invention includes a reactor body 2, the reactor body 2 is provided with a feed inlet 3, a discharge port, and an additive inlet 4, and the kettle body 2 of the reactor is a stainless steel kettle body or a graphite kettle body, and the reactor body 2 is provided with a There is a packing layer 5 of PTFE material. 6 is a thermometer hole, 7 is a pressure gauge hole, and 1 is a support.

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Abstract

The invention relates to the technical field of chemical reaction kettles, in particular to a special reaction kettle for the preparation of hydrofluoric acid. It can realize the treatment of the hydrofluoric acid coming out of the reaction kettle, reduce the content of metal ions in the hydrofluoric acid, and ensure the quality of the hydrofluoric acid. It includes a reactor body, the reactor body is provided with a feed inlet, a discharge outlet, and an additive inlet, and the reactor body of the reactor is a stainless steel kettle body or a graphite kettle body, and is characterized in that: The mouth part is provided with a packing layer of tetrafluoro material.

Description

technical field [0001] The invention relates to the technical field of chemical reaction kettles, in particular to a special reaction kettle for the preparation of hydrofluoric acid. Background technique [0002] The reaction kettle for the preparation of existing hydrofluoric acid directly uses steel cylinder or full-carbon steel, and the reactor is produced under the direct heating of water or steam, and the metal ions of steel cylinder or full-carbon steel will enter in the hydrofluoric acid, As a result, the content of metal ions in hydrofluoric acid is relatively high, reaching 1ppm, which is only suitable for corrosion in diodes. The products are AR grade, GR grade, and EL grade. The industry adopts stainless steel kettle body or graphite kettle body, and sets the additive inlet on the kettle body, and realizes the control of metal ions in hydrofluoric acid in the kettle by adding additives. This method will not lead to metal ions in hydrofluoric acid The increase imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/19
Inventor 王明
Owner 无锡东风新能源科技有限公司
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