High quality insoluble sulfur and method for production the same

Abstract

The present invention provides a high quality insoluble sulfur and a method for production the same. The method comprises molten sulfur is removed from sulfur steam by a gas-liquid separator before the sulfur steam is supplied to a cooler, so as to manufacture the high quality insoluble sulfur. According to the method for production the high quality insoluble sulfur, problems such as pipeline blockage in the manufacturing process are prevented, and the high quality insoluble sulfur whose residue on sieve(over 1.5% for 100 meshes) is low in content can be manufactured. The insoluble sulfur manufactured according to the method is over 90% in content of insoluble sulfur in relative to the total sulfur, lower than 1.5% in residue on sieve, lower than 71% in high throughput screening (HTS), and 5-30 [mu]m in particle size, has a high quality, and thus can serve as a vulcanizing agent in the rubber industry, especially for producing 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...

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

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