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Treatment method of sulfur mud of dicyclohexyl disulfide

A technology of dicyclohexyl disulfide and a treatment method, applied in the field of sulfur sludge treatment and recovery of low-grade sulfur, can solve problems such as resource waste, avoid environmental pollution, save chemical production costs, and improve recycling rate. Effect

Active Publication Date: 2018-09-21
山东戴瑞克新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the waste of resources and environmental pollution problems in the sulfur mud in the prior art, the invention provides a treatment method for the sulfur mud of dicyclohexyl disulfide, which uses sodium sulfide to reclaim the low-grade sulfur in the sulfur mud to avoid It reduces the waste of resources, increases the added value of sulfur mud, and reduces environmental pollution, providing an effective way for the reuse and post-treatment of sulfur mud

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Take 400.0g of sulfur mud waste residue in a 1000ml beaker. Measure 400.0g of sodium sulfide solution (concentration 10.0g / 100ml) into the above beaker, put the beaker into a water bath at 70°C for stirring, after stirring for 30 minutes, the filter residue is no longer dissolved. Carry out suction filtration operation with suction filter, after suction filtration is finished, the quality of filter residue is weighed to be 132.5g, and the quality of filtrate is 667.5g. The filtrate can be used as a raw material for the workshop to produce dicyclohexyl disulfide.

[0029] 2. Put the filter residue obtained by suction filtration in step 1 into a beaker, measure 133 grams of hydrochloric acid (concentration 0.5mol / L) into the beaker, and stir for 30 minutes at normal temperature and pressure, and some substances are dissolved in the hydrochloric acid , After standing still for 30 minutes, carry out suction filtration operation with suction filter, after suction filtrat...

Embodiment 2

[0032] 1. Take 400.0g of sulfur mud waste residue in a 1000ml beaker. Measure 400.0g of sodium sulfide solution (concentration: 10.0g / 100ml) and pour it into the above beaker, put the beaker into a water bath at 65°C for stirring, after stirring for 25 minutes, the filter residue is no longer dissolved. Carry out suction filtration operation with suction filter, after suction filtration is finished, the quality of filter residue is weighed as 134.1g, and the quality of filtrate is 665.9g. The filtrate can be used as a raw material for the workshop to produce dihexyl disulfide.

[0033]2. Put the filter residue obtained by suction filtration in step 1 into a beaker, measure 160 grams of hydrochloric acid (concentration 0.05mol / L) into the beaker, stir for 45 minutes under normal temperature and pressure, and some substances dissolve in the hydrochloric acid , After standing still for 30 minutes, carry out the suction filtration operation with the suction filter, after the suct...

Embodiment 3

[0036] 1. Take 400.0g of sulfur mud waste residue in a 1000ml beaker. Measure 600.0g of sodium sulfide solution (concentration: 10.0g / 100ml) and pour it into the above beaker, put the beaker into a water bath at 70°C for stirring, after stirring for 25 minutes, the filter residue is no longer dissolved. Carry out suction filtration operation with suction filter, after suction filtration is finished, the quality of filter residue is weighed as 130.9g, and the quality of filtrate is 869.1g. The filtrate can be used as a raw material for the workshop to produce dicyclohexyl disulfide.

[0037] 2. Put the filter residue obtained by suction filtration in step 1 into a beaker, measure 131.0 grams of hydrochloric acid (concentration 0.1mol / L) into the beaker, and stir for 30 minutes under normal temperature and pressure, and some substances are dissolved in hydrochloric acid , After standing still for 30 minutes, carry out the suction filtration operation with the suction filter, af...

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Abstract

The invention discloses a treatment method of sulfur mud of dicyclohexyl disulfide. The method comprises the following steps: mixing and stirring sulfur mud residue and a sodium sulfide solution tillthe sulfur mud residue is not dissolved any longer, performing filtration, storing and recycling filtrate as a raw material of dicyclohexyl disulfide, intensively stirring and mixing filter residue and hydrochloric acid, allowing standing still, performing filtration, adding the filter residue into water for stirring and washing till no water-soluble substance is dissolved in the water, and dryingthe washed filter residue as a solid waste for treatment. The method has a very good recovery effect on the sulfur mud residue generated in a production process of dicyclohexyl disulfide, can increase a sulfur recycling rate, avoids resource waste, reduces chemical production cost, reduces the solid waste generated in the production process, avoids environmental pollution to a certain extent, complies with the modern espoused environmental protection concept and implements a green chemical concept.

Description

technical field [0001] The invention relates to a treatment method for sulfur mud produced in the process of producing dicyclohexyl disulfide, in particular to a method for recovering low-grade sulfur from the sulfur mud produced in the process of producing dicyclohexyl disulfide, The invention belongs to the technical field of dicyclohexyl disulfide waste treatment. Background technique [0002] The structural formula of dicyclohexyl disulfide (referred to as disulfide) is , can be used as food spices, used in dyes, medicines, pesticides, organic synthesis and other fields; in the rubber additive industry, dicyclohexyl disulfide is a synthetic anti-scorch agent CTP One of the important intermediates of imines. Modern rubber processing technology is developing towards high temperature and high speed. The role of anti-scorch agents is becoming more and more prominent, and the status of the intermediate product dicyclohexyl disulfide is also becoming more and more important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/027C01B17/22
CPCC01B17/027C01B17/22
Inventor 郑崇纳董瑞国方风芹李宪索马亚敏纪艳宇桑圣印薛苗
Owner 山东戴瑞克新材料有限公司
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