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High quality insoluble sulphur production method

A production method and high-quality technology, applied in the preparation/purification of sulfur, can solve the problems of great harm to the physical and mental health of operators, prolong the production cycle, inflammable, explosive and high corrosion, and achieve high thermal stability and dispersion Sex, reduce production cost, improve the effect of production environment

Inactive Publication Date: 2016-11-23
SHANDONG SUNSINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some manufacturers in China have used solvent one-step method and continuous one-step method to prepare insoluble sulfur. Although the quality has been improved, the following problems still exist: ①The yield of the product is low
At present, the quenching, steaming, extraction, drying and solvent regeneration processes in the production of insoluble sulfur all involve flammable, explosive, highly corrosive and toxic organic solvents. The use of organic solvents is extremely harmful to the surrounding environment and the physical and mental health of operators.
③ The fineness of the dried material is not enough, it needs crushing and sieving process, which requires manpower and equipment, which prolongs the production cycle, and must have a good dust recovery device and anti-static measures, which is not safe

Method used

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  • High quality insoluble sulphur production method

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Effect test

Embodiment 1

[0020] A kind of production method of high-quality insoluble sulfur of the present invention, comprises the following steps:

[0021] (1) Throw solid sulfur or liquid sulfur of ordinary sulfur into the molten sulfur pool for melting or heat preservation, and the temperature is controlled at 120-150°C; the molten liquid sulfur is pumped into the heating tank with a sulfur pump, and the temperature is automatically raised and controlled Between 220°C and 250°C. Use a sulfur metering pump to drive the liquid sulfur in the heating tank into the tubular heating furnace, and control the sulfur temperature at the outlet of the tubular heating furnace at 1300°C.

[0022] (2) In the quenching synthesizer, the high-temperature gas sulfur is in full contact with the quenching liquid from all directions, rapidly cooled to form uniform spherical insoluble sulfur powder, and the quenching liquid contains liquid nitrogen.

[0023] (3) The insoluble sulfur powder is packaged into finished pr...

Embodiment 2

[0025] A kind of production method of high-quality insoluble sulfur of the present invention, comprises the following steps:

[0026] (1) Throw solid sulfur or liquid sulfur of ordinary sulfur into the molten sulfur pool for melting or heat preservation, and the temperature is controlled at 120-150°C; the molten liquid sulfur is pumped into the heating tank with a sulfur pump, and the temperature is automatically raised and controlled Between 220°C and 250°C. Use a sulfur metering pump to drive the liquid sulfur in the heating tank into the tubular heating furnace, and control the sulfur temperature at the outlet of the tubular heating furnace at 1500°C.

[0027] (2) In the quenching synthesizer, the high-temperature gas sulfur is in full contact with the quenching liquid from all directions, rapidly cooled to form uniform spherical insoluble sulfur powder, and the quenching liquid contains liquid nitrogen.

[0028] (3) The insoluble sulfur powder is packaged into finished pr...

Embodiment 3

[0030] A kind of production method of high-quality insoluble sulfur of the present invention, comprises the following steps:

[0031] (1) Throw solid sulfur or liquid sulfur of ordinary sulfur into the molten sulfur pool for melting or heat preservation, and the temperature is controlled at 120-150°C; the molten liquid sulfur is pumped into the heating tank with a sulfur pump, and the temperature is automatically raised and controlled Between 220°C and 250°C. Use a sulfur metering pump to drive the liquid sulfur in the heating tank into the tubular heating furnace, and control the sulfur temperature at the outlet of the tubular heating furnace at 1600°C.

[0032] (2) In the quenching synthesizer, the high-temperature gas sulfur is in full contact with the quenching liquid from all directions, rapidly cooled to form uniform spherical insoluble sulfur powder, and the quenching liquid contains liquid nitrogen.

[0033] (3) The insoluble sulfur powder is packaged into finished pr...

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Abstract

The invention provides a high quality insoluble sulphur production method, and belongs to the field of inorganic fine chemical engineering. The preparation method comprises: (1) sulphur melting, heating, and vaporizing; (2) quenching; (3) oil filling oil to obtain the finished product, wherein sulphur is heated with a tubular heating furnace to a temperature of more than 1200 DEG C in the step (1), quenching is performed with low-temperature inert gases such as liquid nitrogen, liquid-state carbon dioxide and the like in the step (2), and in the step (3), a compound stabilizer SX05 is required to be added during the oil filling process and is a mixture of a metal halide and unsaturated olefin. According to the present invention, the high quality insoluble sulphur production method is the continuous production method; with the method, the one-time yield of the product can achieve more than 90%, and the high thermal stability and the dispersibility of the product are substantially improved; the extraction, drying, crushing and screening on the product is not required, such that the production process is shortened, and the production environment is substantially improved; and with the method, the complete conversion of the raw material sulphur is achieved, the production cost is reduced, and the method belongs to the green environmental protection process.

Description

technical field [0001] The invention relates to a production method of insoluble sulfur, in particular to a production method of high-quality insoluble sulfur. Background technique [0002] Insoluble sulfur is an allotrope of ordinary sulfur. It is a linear polymer formed by the polymerization of a large number of sulfur atoms. It is insoluble in carbon disulfide and insoluble in rubber, so it is called insoluble sulfur or polymeric sulfur. The scientific name is It is polymeric sulfur (English name is Insoluble Sulfur, referred to as IS), it is mainly used as a vulcanizing agent in the rubber industry and is widely used in the production of rubber products such as tires. In recent years, some manufacturers in China have used solvent one-step method and continuous one-step method to prepare insoluble sulfur. Although the quality has been improved, the following problems still exist: ①The yield of the product is low. At present, the product yield of insoluble sulfur in indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/12
Inventor 张颂马跃斌张凤丽王波孙玉哲宋晓举
Owner SHANDONG SUNSINE CHEM