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A kind of use method of preparing hydrogen fluoride washing tower

A washing tower, hydrogen fluoride technology, applied in the directions of hydrogen fluoride, fluorine/hydrogen fluoride, chemical instruments and methods, etc., can solve the problems of blockage and backflow of the gas guide, corrosion of the reaction furnace body, etc.

Active Publication Date: 2020-01-03
湖南科迈环保设备有限公司
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Problems solved by technology

[0003] Prior Art 1 and Prior Art 2 The hydrogen fluoride separation and impurity refining devices are commonly used pre-purification towers, washing towers, condensers, rectification towers and degassing towers, wherein washing and condensation are usually one of the processes for refining anhydrous hydrogen fluoride 1. The existing technical problems mainly include that the washing acid coming out of the bottom of the washing tower enters the washing circulation storage tank. The washing acid pipeline is generally inserted into the washing circulation storage tank below the liquid level of 800mm. The rise of the scrubbing acid liquid level in the tower will block the air duct for transporting hydrofluoric acid gas and flow back to the reaction furnace, causing corrosion to the reaction furnace body

Method used

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  • A kind of use method of preparing hydrogen fluoride washing tower
  • A kind of use method of preparing hydrogen fluoride washing tower
  • A kind of use method of preparing hydrogen fluoride washing tower

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 , figure 2 , image 3 As shown, a method for preparing a hydrogen fluoride washing tower is characterized in that: Step 1, the liquid level conditions of the washing tower 1, the washing circulation storage tank 2, and the primary condenser 4 must be observed by a liquid level gauge before use to ensure that the liquid The surface is 1000mm away from the air guide pipe 7 and the gas outlet 16, and is more than 300 mm higher than the outlet of the washing cycle storage tank 2. Open the exhaust valve of the washing cycle storage tank 2 to empty a small amount of mixed gas to ensure that the liquid seal is in a normal working state.

[0019]Step 2, the hydrofluoric acid gas is introduced through the air guide pipe 7, and the temperature of the hydrofluoric acid gas is 160°C at this time, and flows upward in the washing t...

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Abstract

The invention relates to the technical field of fluorine chemical industry and particularly relates to a method for using a washing tower for preparing hydrogen fluoride. The method is characterized in that hydrofluoric acid gas is introduced through a gas guide pipe, upwards flows through a tower tray and a knockout tray in a washing tower body and is subjected to mass transfer and heat transferwith washing acid sprayed by a spraying assembly herein, cooled hydrofluoric acid gas enters a gas inlet of a primary condenser through a gas exhaust opening, the hydrofluoric acid gas is subjected toheat exchange through a condenser pipe plate assembly and then is discharged through a liquid remover and a gas outlet.

Description

technical field [0001] The invention relates to the technical field of fluorine chemical industry, in particular to a method for preparing a hydrogen fluoride washing tower. Background technique [0002] Hydrogen fluoride has been widely used in electronics, chemical industry, petroleum and other industries. It is mainly used as a refining process for preparing fluorine salts, fluorohaloalkanes, fluorine refrigerants, corroding glass, impregnating wood, electrolyzing elemental fluorine, etc., and separating impurities after obtaining crude hydrogen fluoride. It is a key process, and the process of condensation is included in the refining process. Chinese invention patent (patent number CN201310287202.4, patent name is a production method of anhydrous hydrogen fluoride) discloses a production method of anhydrous hydrogen fluoride, which is characterized in that it includes the following steps: feeding fluorite powder and sulfuric acid into the pre-reactor ; In the pre-reacto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B7/19B01D5/00
CPCB01D5/0003B01D5/0057C01B7/192C01B7/195
Inventor 杨松
Owner 湖南科迈环保设备有限公司
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