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Technology for preparing nitrogen trifluoride by gas-solid reaction direct fluorination method

A technology of nitrogen trifluoride and gas-solid reaction, which is applied in the direction of nitrogen and non-metallic compounds, can solve pollution and other problems, and achieve the effect of convenient use and reasonable design

Inactive Publication Date: 2012-01-11
天津东方宜信物流有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

This technology is not only reasonable in process and simple in preparation, but also in good quality. The purity of nitrogen trifluoride produced is over 80%, and it solves the problem of environmental pollution.

Method used

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  • Technology for preparing nitrogen trifluoride by gas-solid reaction direct fluorination method
  • Technology for preparing nitrogen trifluoride by gas-solid reaction direct fluorination method

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Embodiment Construction

[0013] refer to figure 1 , Reactor 1 equipped with reactor heating device 2, demister 3 installed with demister heating device 4, trap 5, scrubber 6, cold trap 7, left adsorption column 8, right adsorption column 9, The condenser 10, the vacuum pump 11 and the connecting valve 13 are assembled into one body through the connecting pipeline 12 according to their system functions.

[0014] The present invention adopts the technology of direct fluorination of ammonia compound in perfluorocarbon liquid medium to prepare nitrogen trifluoride. The reactants are introduced into the reaction mixture and react at a temperature of 60-44°C to produce nitrogen trifluoride product. Perfluorocarbon fluids can improve the reaction between the fluorine reactant and the source of ammonium ions in various ways. The PFC in the reaction mixture at least partially dissolves the one or more sources of ammonium ions contained in the mixture. The fluorine reactant is also more readily soluble in th...

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Abstract

The invention discloses a technology for preparing nitrogen trifluoride by a gas-solid reaction direct fluorination method. The technology is mainly formed by integrally assembling a reactor, a demister, a drip catcher, a washer, a cold trap, a left adsorption column, a right adsorption column, a condenser, a vacuum pump and a connecting valve through a connecting pipeline according to system functions, wherein a reactor heating device is installed on the reactor, and the demister is installed on a demister heating device. The invention has the advantages of reasonable design, convenience for use and is an ideal process technology for preparing the nitrogen trifluoride.

Description

Technical field [0001] The invention relates to a process technology for preparing chemical product-nitrogen trifluoride, in particular to a technology for preparing nitrogen trifluoride by gas-solid reaction direct fluorination, which is suitable for chemical synthesis of nitrogen trifluoride. Background technique [0002] At present, the method for producing nitrogen trifluoride is to supply fluorine gas and ammonia gas into a tubular reactor, and make them react in the presence of a diluent gas in the gas phase without a catalyst to produce nitrogen trifluoride mainly. Gas products and solid products mainly containing ammonium fluoride and / or acid ammonium fluoride are removed from the above-mentioned tubular reactor by means of a device installed on the above-mentioned tubular reactor for removing the above-mentioned solid products. The above-mentioned solid product of the inner wall. This method is not suitable for continuous production, and the output rate is relative...

Claims

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Application Information

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IPC IPC(8): C01B21/083
Inventor 李中元
Owner 天津东方宜信物流有限公司
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