Method for processing chemical toxic substances such as lewisite and zarina

 

(57) Abstract:

Usage: the destruction of chemical weapons, in particular chemical warfare agents type of lewisite and sarin. The inventive fluoridation of lewisite or sarin, hydrogen fluoride or fluorides of metals, metal fluorides use waste uranium hexafluoride. 1 C. p. F. - ly.

The invention can be used for the elimination of chemical weapons, in particular the method is designed for the complete destruction of lewisite and Zarina from obtaining useful for the national economy products (high-purity arsenic, freons, and so on).

Lewisite and sarin belong to two different classes of chemical warfare agents, the most widely used in the equipment of the armed forces.

Technical lewisite consists of ,and forms. -lewisite- -chlorovinyldichloroarsine has the chemical formula lCH=CHAS Cl2;

-lewisite-bis-(2-vinyl chloride)chloroarsine- (ClCH= CH)2AS Cl and-lewisite-Tris(2-vinyl chloride)arsina cars-(ClCH=CH)3AS;

-lewisite mixture of CIS - and TRANS-isomers, boiling, respectively, at 170 and 196aboutC.

Sarin, isopropyl ether foramerica methylphosphonic acid has the chemical formula (CH3)

However, the known methods do not provide the irreversible destruction of chemical warfare agents, and the resulting products are environmentally hazardous substances.

The problem to which the invention is directed is to provide a method for processing chemical toxic substances such as lewisite and Zarina method halogenoalkane.

The technical result of the invention consists in reducing waste, reducing toxicity, inability to re-synthesis of toxic substances, reducing the cost of production.

This technical result is achieved by a method for processing chemical toxic substances such as lewisite and Zarina includes fluoridation of lewisite or sarin, hydrogen fluoride or fluorides of metals. As the metal fluoride used waste uranium hexafluoride.

To implement the proposed method toxic substances such as lewisite and Zarina mixed with a fluorinating agent (hydrogen fluoride or fluorides of metals), in particular with otvajnym the uranium hexafluoride when slightly heated until complete destruction of toxic substances the same metal fluorides, for example Tetra-fluoride uranium. After fluorination direct synthesis of toxic substances is not possible. When this lower fluorides are used to obtain metals, tetraploid uranium goes to the store in a more convenient form than the uranium hexafluoride, for enterprises of nuclear industry, and gaseous products of low-temperature rectification to obtain highly pure substances intended for use in microelectronics freons, fluoride, arsenic or phosphorus.

The proposed method is illustrated with an example.

In nerastarel or Nickel chemical reactor, provided with a flanged cover with submersible and outlet tubes having at the outer end nerastlennie valves diaphragm type, is placed waste uranium hexafluoride. To the reactor is added lewisite or sarin gas in an amount necessary to fully interact with uranium hexafluoride. After cooling of the reactor at a temperature of from 20 to 100aboutC for 1-30 min the resulting gaseous products travelways through the pressure regulator in nerastarel balloon-drive and solid product tetraploid uranium is unloaded from the reactor.

Using gas chromatography-mass spectrometric analysis of the of the toxic substance (S) are given in the table.

Using this method allows you to process S to ozone-friendly freon and other environmentally friendly products for microelectronics.

1. Method for processing chemical toxic substances such as lewisite and sarin, including fluoridation of lewisite or sarin, hydrogen fluoride or fluorides of metals.

2. The method according to p. 1, characterized in that as the metal fluoride used waste uranium hexafluoride.

 

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