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Production device and production method of liquid sodium dimethyl dithiocarbamate

A production device and technology of forma sodium, which is applied in the direction of organic chemistry, can solve the problems of hydrochloric acid or raw materials, high product cost, and high loss of carbon disulfide, so as to avoid the clogging of venting pipelines and safety problems, and reduce the overall cost of products , The effect of reducing equipment investment

Active Publication Date: 2013-07-24
青岛中科荣达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, dimethylamine, sodium hydroxide, and carbon disulfide are mainly used in the domestic production of sodium thiocarba to react. Other methods such as thiophosgene process and yellow ester ammonolysis method have only theoretical research value due to the large amount of waste water or the generation of hydrochloric acid or the raw materials are not worthwhile.
[0004] Existing Sodium Disulfide production process mainly has the following deficiencies: 1, long production cycle; 2, adopt normal pressure operation, raw material carbon disulfide loss is much, and carbon disulfide is easily discharged from the venting pipeline during reaction; 3, after a period of production, due to material Solids are brought out by emptying, and it is easy to block the emptying pipeline and cause production accidents after a long time; 4. High product cost

Method used

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  • Production device and production method of liquid sodium dimethyl dithiocarbamate

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Experimental program
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Effect test

Embodiment 1

[0033] Example 1, such as figure 1 Shown, a kind of production device of liquid formazan comprises reactor 5, and the top of described reactor 5 is connected with dimethylamine elevated tank 1, sulfur dioxide elevated tank 2, sodium hydroxide elevated tank 3 respectively by pipeline, so The bottom of the reactor 5 is connected with a reactor discharge valve 12, and the reactor discharge valve 12 is connected with a filter 7, a finished product blending tank 6 and a finished product storage tank 8 in sequence through pipelines.

[0034] The outside of the reaction kettle 5 is provided with a reaction kettle jacket and an internal cooling coil.

[0035] A circulation pump 9 is installed on the communication pipeline between the reactor discharge valve 12 and the filter 7 .

[0036] Said dimethylamine elevated tank 1, sulfur dioxide elevated tank 2, sodium hydroxide elevated tank 3 and the connecting pipeline between the reactor 5 are connected in parallel with an air compressor...

Embodiment 2

[0052] Example 2, such as figure 1 Shown, a kind of production device of liquid formazan comprises reactor 5, and the top of described reactor 5 is connected with dimethylamine elevated tank 1, sulfur dioxide elevated tank 2, sodium hydroxide elevated tank 3 respectively by pipeline, so The bottom of the reactor 5 is connected with a reactor discharge valve 12, and the reactor discharge valve 12 is connected with a filter 7, a finished product blending tank 6 and a finished product storage tank 8 in sequence through pipelines.

[0053] The outside of the reaction kettle 5 is provided with a reaction kettle jacket and an internal cooling coil.

[0054]A circulation pump 9 is installed on the communication pipeline between the reactor discharge valve 12 and the filter 7 .

[0055] An air compressor 4 is communicated with the connecting pipeline between the dimethylamine elevated tank 1, the sulfur dioxide elevated tank 2, the sodium hydroxide elevated tank 3 and the reactor 5, ...

Embodiment 3

[0071] Example 3, such as figure 1 Shown, a kind of production device of liquid formazan comprises reactor 5, and the top of described reactor 5 is connected with dimethylamine elevated tank 1, sulfur dioxide elevated tank 2, sodium hydroxide elevated tank 3 respectively by pipeline, so The bottom of the reactor 5 is connected with a reactor discharge valve 12, and the reactor discharge valve 12 is connected with a filter 7, a finished product blending tank 6 and a finished product storage tank 8 in sequence through pipelines.

[0072] The outside of the reaction kettle 5 is provided with a reaction kettle jacket and an internal cooling coil.

[0073] A circulation pump 9 is installed on the communication pipeline between the reactor discharge valve 12 and the filter 7 .

[0074] An air compressor 4 is communicated with the connecting pipeline between the dimethylamine elevated tank 1, the sulfur dioxide elevated tank 2, the sodium hydroxide elevated tank 3 and the reactor 5,...

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Abstract

The invention discloses a production device and a production method of liquid sodium dimethyl dithiocarbamate. The production device comprises a reaction kettle, wherein the upper part of the reaction kettle is respectively communicated with a dimethylamine head tank, a sulfur dioxide head tank and a sodium hydroxide head tank by pipelines; the lower part of the reaction kettle is connected with a reaction kettle dump valve; and the reaction kettle dump valve is sequentially communicated with a filter, a finished product allocation tank and a finished product storage tank sequentially by pipelines. The production method comprises the following steps of: measuring carbon bisulfide, a 30% sodium hydroxide solution and 40% dimethylamine at a mass ratio, placing a dimethylamine solution into the reaction kettle, mixing, supplying a cooling medium to a reaction kettle jacket and an internal cooling coil tube, pressing carbon bisulfide into a synthetic kettle when the temperature of the kettle drops to 10-20 DEG C, then pressing the 30% sodium hydroxide solution into the synthetic kettle, slowly opening a synthetic kettle dump valve, and pressing a material in the reaction kettle into the filter and then into the finished product allocation tank.

Description

technical field [0001] The invention relates to a production device and a synthesis method of liquid formex sodium, belonging to the technical field of chemical products. Background technique [0002] Forma sodium (scientific name sodium dimethyl dithiocarbamate) is one of the important dialkyl dithiocarbamate. In the rubber industry, it is used as a terminator for emulsion polystyrene butadiene rubber and styrene butadiene latex, as a vulcanization accelerator for rubber products, as a bactericidal algae and slime preventive agent in industrial water treatment, and as a bactericide in petroleum and paper industries. Algaecide, used in agriculture to produce insecticides such as thiram, thiram, etc., used in mining as a beneficiation agent for manganese ore, copper ore, gold and silver ore, etc., and also used as a wood preservative. It is a large amount used at home and abroad. Dialkyl dithiocarbamate species. [0003] At present, dimethylamine, sodium hydroxide, and c...

Claims

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Application Information

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IPC IPC(8): C07C333/16
Inventor 郭祥荣李绍彦庄青王璀李绍禹
Owner 青岛中科荣达新材料有限公司
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