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High-quality insoluble sulfur and method for producing the same

A manufacturing method and technology of sulfur, applied in the direction of sulfur preparation/purification, chemical/physical/physicochemical fixed reactors, etc., can solve problems such as pipeline blockage, difficulty in producing insoluble sulfur, and increased sieve residue content, etc. To achieve the effect of preventing pipe blockage

Active Publication Date: 2016-08-31
H SULFUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In addition, when the sulfur vapor is moved to the cooler, depending on the pressure and speed of the flow of the sulfur vapor, sulfur liquid is produced due to the azeotropic phenomenon of steam and water or the condensation phenomenon of the gas, and a large amount (20% to 30%) is included in the sulfur vapor The liquid sulfur, when the liquid sulfur is rapidly cooled, does not become a powder form, but becomes a small particle (granules) form to block the pipeline, so that the sieve residue content in the obtained insoluble sulfur (final product) increased, making it difficult to produce high-quality insoluble sulfur
However, the fact is that in the conventional production methods, these problems were not recognized at all, or the problems were not solved, causing problems in the production process such as clogged pipes, or making it difficult to produce high-quality insoluble sulfur

Method used

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  • High-quality insoluble sulfur and method for producing the same
  • High-quality insoluble sulfur and method for producing the same
  • High-quality insoluble sulfur and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Sulfur vapor is produced by vaporizing liquid sulfur at about 130°C at about 635°C and supplied to the gas-liquid separator at 9kg / cm 2 maintain until the sulfur vapor is bright yellow (confirmed through the vent) and the liquid collected in the lower part of the gas-liquid separator is a red wine color without impurities, thereby removing sulfur droplets (liquid sulfur) from the sulfur vapor, after which Sulfur vapor was supplied at a flow rate of 500 kg / hr to a cooler filled with about 40% of carbon disulfide at 30° C. to 60° C. for cooling. At this time, the solution was continuously recirculated from the lower part of the cooler to the upper part at 120 tons / hr. The temperature inside the cooler is maintained at 30°C to 60°C and the pressure at 1.0kg / cm by the heat exchanger installed in the recirculation pipe of the cooler 2 ~1.2kg / cm 2 , and the carbon disulfide suspension containing the generated insoluble sulfur was stirred by a stirrer arranged at the lower p...

Embodiment 2

[0087] Sulfur vapor is produced by vaporizing liquid sulfur at about 130°C at about 635°C and supplied to the gas-liquid separator at 9kg / cm 2 Keep it down until the sulfur vapor is bright yellow (confirmed through the vent) and the liquid collected in the lower part of the gas-liquid separator is a red wine color without impurities, so that the sulfur droplets (liquid sulfur) are removed from the sulfur vapor, and then the sulfur vapor is separated into A flow rate of 600 kg / hr was supplied to a cooler filled with about 30% of carbon disulfide at 30° C. to 60° C. for cooling. At this time, the solution was continuously recirculated from the lower part of the cooler to the upper part at 120 tons / hr. The temperature inside the cooler is maintained at 30°C to 50°C and the pressure at 1.0kg / cm by the heat exchanger installed in the recirculation pipe of the cooler 2 ~1.2kg / cm 2 , and the carbon disulfide suspension containing the formed insoluble sulfur was stirred by a stirrer...

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Abstract

The present invention provides high-quality insoluble sulfur and a method for producing the high-quality insoluble sulfur by passing sulfur vapor through a gas-liquid separator to remove liquid sulfur before supplying sulfur vapor to a cooler. In the method for producing insoluble sulfur according to the present invention, problems in the production process such as pipeline clogging can be prevented, and high-quality insoluble sulfur with a low sieve residue content (100 mesh 1.5% or less) can be produced. The insoluble sulfur produced by the production method of the present invention is of high quality with an IS (insoluble sulfur to total sulfur) content of 90% or more, a sieve residue of 1.5% or less, an HTS of 71% or more, and a particle size of 5 μm to 30 μm. Insoluble sulfur can therefore be used as a vulcanizing agent in the rubber industry, especially in the manufacture of tires.

Description

technical field [0001] The invention relates to high-quality insoluble sulfur and a manufacturing method thereof. More specifically, the present invention relates to a method for producing high-quality insoluble sulfur by passing sulfur vapor through a gas-liquid separator to remove liquid sulfur before supplying sulfur vapor to a cooler. Background technique [0002] The so-called insoluble sulfur (insoluble sulfur) refers to carbon disulfide (CS2) insoluble sulfur, also known as polymeric sulfur (polymeric sulfur). Generally, sulfur in this form is a polymer having a molecular weight of 100,000 or more and a particle size of 5 μm to 30 μm, composed of thousands of sulfur atoms. Insoluble sulfur is non-crystalline, and its form is different from soluble sulfur which is composed of crystals. [0003] A generally known method for producing insoluble sulfur is as follows: After heating liquid sulfur (S8) to form sulfur vapor, the sulfur vapor is rapidly cooled using carbon d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/12
CPCC01B17/12B01J19/24C01B17/02
Inventor 俞宣警金珉吾
Owner H SULFUR
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