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Method of producing methyl chloride by multistage reactions

A manufacturing method and technology of methyl chloride, which are applied in chemical instruments and methods, preparation of halogenated hydrocarbon disproportionation, chemical recovery, etc., can solve the problems of ineffective utilization of hydrogen chloride and unsatisfactory production of methyl chloride.

Pending Publication Date: 2021-04-30
KOREA RES INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the above-mentioned conventional methods related to the production of methyl chloride, the production amount of methyl chloride is not satisfactory, or hydrogen chloride, which is a by-product of the chlorination reaction, cannot be effectively utilized to be separately separated and recovered.

Method used

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  • Method of producing methyl chloride by multistage reactions
  • Method of producing methyl chloride by multistage reactions
  • Method of producing methyl chloride by multistage reactions

Examples

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Embodiment

[0079] Next, the present invention will be described in more detail based on the following examples.

[0080] However, the following examples are merely examples of the present invention, and the content of the present invention is not limited to the following examples.

manufacture example 1

[0081] Production of Sulfated Zirconia Catalyst

[0082] 2g of glycine (glycine) (Aldrich) and 12.32g of ZrO(NO 3 ) 2 .xH 2 After O(Aldrich) was mixed at a molar ratio of 1:2, the mixture was dissolved in deionized water at a ratio of 2 ml per gram to form an aqueous solution. The aqueous solution formed above was stirred at 80° C. for 2 hours to form a highly viscous gel-like product. The above gel-like product was put into an electric furnace and calcined at 350° C. for 3 hours to form zirconia powder (ZrO 2 powder). The zirconia powder formed above was immersed in a chlorosulfonic acid / dichloroethane solution at a rate of 15 ml per gram, and then heated at 120° C. for 24 hours to evaporate the solvent. After evaporating the solvent, the remaining product was placed in an electric furnace and fired at 650° C. for 3 hours in an air atmosphere to produce 3.6 g of the final product. In the final product produced above, sulfate ion (SO 4 2- ) content was 32.2% by weigh...

manufacture example 2

[0087] Production of Sulfated Tin Oxide Catalyst

[0088] 25g of SnCl 4 .5H 2 After O is dissolved in 500ml of distilled water, add ammonia water (28%) while stirring at room temperature until the pH of the aqueous solution reaches 8, inducing SnCl 4 .5H 2 O hydrolysis reaction. At this time, the precipitate (precipitate) produced by the hydrolysis reaction was filtered to obtain a solid product, which was fully washed with distilled water, put into an oven, and dried at 110° C. for more than 12 hours, thereby generating 5.5 g of tin hydroxide (Sn (OH) 4 ). The resulting tin hydroxide (Sn(OH) 4 ) in a ratio of 15ml per gram into an aqueous sulfuric acid solution (concentration of sulfuric acid: 0.5M), stirred for 1 hour, filtered to obtain a solid product, washed with distilled water, put into a drying oven, and Dry at 110°C for 2 hours. The dried solid product was placed in an electric furnace and calcined at 500° C. for 3 hours in an air atmosphere to produce 4.8 g ...

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Abstract

The present invention relates to a method of producing methyl chloride by multistage reactions. The method of the present invention comprises: a) a chlorination step for sufficiently increasing the conversion rate of methane, which is an initial reactant; and b) a subsequent reaction step for actively utilizing hydrogen chloride (HCl), which is a hazardous byproduct of chlorination, such that the method can efficiently treat harmful hydrogen chloride, and at the same time, can improve the overall production of methyl chloride.

Description

technical field [0001] The present invention relates to a method for producing methyl chloride using multistage reactions. Background technique [0002] Chloromethane (CH 3 Cl) can be used to produce light olefins including ethylene and / or propylene by CMTO (chloromethane to olefin) reaction. [0003] Therefore, studies on the production of methyl chloride from natural gas which is currently abundant in reserves are still being carried out. 4 ) Research on the method of producing methyl chloride. [0004] For example, W.J.M.Pieters etc. have also studied the reaction (Appl.Catal., 11 (1984), 35) of synthesizing methyl chloride by the chlorination of methane, but because of low yield, thus show great limitation in commercial application . [0005] In addition, Korean Patent KR10-1979-0001615B1 relates to the process of chlorinating methane, adopts the steps of recycling unreacted substances, etc., and also suggests the process of separating and recovering hydrogen chlorid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/37C07C19/03
CPCC07C17/37C07C19/03C07C2529/06C07C2521/04Y02P20/582
Inventor 蔡昊廷金英敏金执
Owner KOREA RES INST OF CHEM TECH
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