Method for recovering organic chloride from rectification residues of methane chloride or/and tetrachloroethylene

A technology of methane chloride and tetrachloroethylene, applied in the field of chemistry, can solve the problems of waste of organic chloride resources, complicated processes, and many equipment, and achieve the effects of improving income, simple process and less equipment investment.

Active Publication Date: 2014-05-14
山东中盛药化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps save on capital costs by reducing harmful chemicals used during manufacturing processes while also producing economically significant results through efficient recovery methods that reuse these materials instead of creating new ones from them themselves or other sources like coal gas.

Problems solved by technology

Technological Problem: Current methods used for recovering valuable organochlorines like trimellitroanil (TML) are expensive equipment and require complicated processes due to their use of harmful chemical agents during combustion. Additionally, current methods have limitations when trying to dispose of certain types of materials containing halogenated compounds, which makes it difficult to achieve effective recovery without causing environmental concerns over potential negative effects on humans' health.

Method used

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  • Method for recovering organic chloride from rectification residues of methane chloride or/and tetrachloroethylene

Examples

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Embodiment 1

[0018] The method for reclaiming organic chlorides from the rectification residue of methane chlorides, its process route is as follows figure 1 As shown, it specifically includes the following steps:

[0019] (1) Put the rectification residue of methane chloride into the evaporator, turn on the vacuum pump, keep it warm for 30 minutes under the conditions of vacuum degree of 0.05MP and temperature of 145°C, condense the evaporated volatile components into liquid and enter the trap In the collector, the light component mixed liquid is obtained, and the material in the evaporator is transferred to the sublimator while it is hot;

[0020] (2) Pump 60% of the total volume of the light component mixed liquid obtained in the trap in step (1) into the tetrachlorethylene rectification system to separate chloroform, carbon tetrachloride and tetrachloroethylene; The obtained chloroform and carbon tetrachloride are used as raw materials for the production of tetrachlorethylene, and tet...

Embodiment 2

[0027] The method for reclaiming organic chlorides from the rectification residue of tetrachlorethylene, its process route is as follows figure 1 As shown, it specifically includes the following steps:

[0028] (1) Put the rectification residue of tetrachlorethylene into the evaporator, turn on the vacuum pump, keep it warm at a vacuum degree of 0.01MP and a temperature of 140°C until no liquid evaporates, and condense the evaporated volatile components into liquid After entering the trap, the light component mixed liquid is obtained, and the material in the evaporator is transferred to the sublimator while it is hot;

[0029] (2) Pump 50% of the total volume of the light component mixed liquid obtained in the trap in step (1) into the tetrachlorethylene rectification system to separate chloroform, carbon tetrachloride and tetrachloroethylene; The obtained chloroform and carbon tetrachloride are used as raw materials for the production of tetrachlorethylene, and tetrachloreth...

Embodiment 3

[0036] The method for reclaiming organic chloride after mixing the rectification residue of methane chloride and tetrachloroethylene, its process route is as follows figure 1 As shown, it specifically includes the following steps:

[0037] (1) Mix the rectification residue of methane chloride and tetrachlorethylene according to the ratio of 1:1, then pass it into the evaporator, turn on the vacuum pump, and keep warm at a vacuum degree of 0.1MP and a temperature of 150°C until no liquid evaporates So far, the evaporated volatile component is condensed into a liquid and then enters the trap to obtain a light component mixed liquid, and the material in the evaporator is transferred to the sublimator while it is hot;

[0038] (2) Pump 70% of the total volume of the light component mixed liquid obtained in the trap in step (1) into the tetrachlorethylene rectification system to separate chloroform, carbon tetrachloride and tetrachloroethylene; The obtained chloroform and carbon t...

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Abstract

The invention discloses a method for recovering organic chloride from rectification residues of methane chloride or/and tetrachloroethylene. The method specifically comprises the steps of leading the rectification residues of methane chloride and tetrachloroethylene into an evaporator to perform evaporation, condensing volatile components into liquid and then feeding the liquid into a trap device and transferring the residues into a sublimator; using a tetrachloroethylene rectification system to separate trichloromethane, carbon tetrachloride and the tetrachloroethylene from a part of light component mixed liquid; meanwhile sublimating the residues in the sublimator under the 240-250 DEG C condition, cooling the residues through a condensation device to obtain an initial hexachloroethane product; leading the light component mixed liquid into a refining pan, adding and dissilving the initial hexachloroethane product and then transferring the product into a crystallizing pan for crystallization; performing filtration after the crystallization, collecting a filter cake and filtrate, drying the filter cake to obtain a hexachloroethane product and leading the filtrate into the evaporator for continuous circulation. The method is simple and adopts simple devices, additional solvents and raw materials are not needed, and the method has good environment-friendly benefit and social benefit.

Description

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Claims

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Application Information

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Owner 山东中盛药化设备有限公司
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