Hydrogen fluoride adsorbent as well as preparation method and application thereof

A hydrogen fluoride and adsorbent technology, applied in the field of hydrogen fluoride adsorbent and its preparation, can solve the problems of increasing the usage of fresh water in enterprises and being uneconomical

Pending Publication Date: 2022-01-04
JIANGSU XINTAI MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such treatment will increase the amount of fresh water used in the enterprise. On the other hand,

Method used

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  • Hydrogen fluoride adsorbent as well as preparation method and application thereof
  • Hydrogen fluoride adsorbent as well as preparation method and application thereof
  • Hydrogen fluoride adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0031] Weigh 25kg of polyacrylonitrile, 12.5kg of sodium fluoride, and 12.5kg of potassium fluoride, mix them evenly, take them out and use a mortar to crush them into powders of about 80 meshes, extrude them with an extruder, and cut them into Φ4mm-6mm lengths. 6mm ~ 8mm particles, put into the tube furnace for pre-oxidation and carbonization.

[0032] Adsorbent preparation example 2

[0033] Weigh 25kg of polyacrylonitrile, 12.5kg of sodium fluoride, and 12.5kg of potassium bifluoride, mix them evenly, take them out and use a mortar to crush them into powders of about 80 meshes, extrude them with an extruder, and cut them into Φ4mm-6mm lengths. 6mm ~ 8mm particles, put into the tube furnace for pre-oxidation and carbonization.

[0034] Adsorbent Adsorption Application Example 1

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PUM

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Abstract

The invention discloses a hydrogen fluoride adsorbent, which comprises the following raw materials: polyacrylonitrile, and one or more of alkali metal fluoride, alkaline earth metal fluoride and alkali metal fluorine-hydrogen compound. The invention also discloses a preparation method and application of the hydrogen fluoride adsorbent. The treatment mode of hydrogen fluoride in the lithium hexafluorophosphate production process is improved through the novel adsorbent, hydrogen fluoride in waste gas is recycled as much as possible and used for upstream section production, energy is saved, cost is reduced, and benefits are improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen fluoride adsorbent, in particular to a hydrogen fluoride adsorbent and its preparation method and application. Background technique [0002] As a basic fluorine chemical product, hydrogen fluoride is widely used in the production of refrigerants, fluorine resins, fluoride salts, fluorine-containing intermediates and fine chemicals. In order to obtain a better fluorination effect, an excess of hydrogen fluoride is generally used. Due to the strong corrosiveness of hydrogen fluoride, its existence affects the quality of products, so hydrogen fluoride must be treated in fluorine chemical industry. Therefore, it has become an important measure to save fluorspar resources and improve the environment to deal with hydrogen fluoride in fluorine chemical industry and waste gas and to reuse it. [0003] At present, the conventional treatment methods are absorption method, membrane separation method, adso...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/14
CPCB01J20/20B01J20/046C02F1/283C02F1/281C02F2101/14
Inventor 王开涛施舜文盛晓东姚强
Owner JIANGSU XINTAI MATERIALS TECH CO LTD
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