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A kind of preparation method of is90 insoluble sulfur

A sulfur and soluble technology, applied in the field of preparation of IS90 insoluble sulfur, can solve the problem of poor thermal stability of insoluble sulfur, and achieve the effect of light thermal stability degradation, reduction of insoluble sulfur content, and guarantee of sulfur content.

Active Publication Date: 2020-04-24
SHANGHAI JINGHAI ANHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the relatively poor thermal stability of the obtained insoluble sulfur produced by the existing process, and to provide a method for preparing IS90 insoluble sulfur

Method used

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  • A kind of preparation method of is90 insoluble sulfur
  • A kind of preparation method of is90 insoluble sulfur
  • A kind of preparation method of is90 insoluble sulfur

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Effect test

Embodiment 1

[0033] A stabilizer for the preparation of insoluble sulfur in this embodiment, the stabilizer is composed of ammonium persulfate and ethyl sodium xanthate, the stabilizer can be added in multiple links, such as during rapid cooling, extraction, solidification and drying During operation and oil filling operation, the effect is best when added during the drying process after extraction. The preparation method of stabilizing agent among the present invention is as follows: ammonium persulfate and ethyl sodium xanthate are dissolved in water according to the mass ratio of 3: (4-5), after the reaction, ammonium persulfate and ethyl sodium xanthate form The mother liquor and water are precipitated and separated, and the mother liquor and water are separated to obtain a stabilizer formed by ammonium persulfate and ethyl sodium xanthate. The preferred dosage of the stabilizer is 2% to 3% of the weight of the insoluble sulfur product. When added, it will reverse the appearance or nat...

Embodiment 2

[0036] A kind of production method of IS90 insoluble sulfur of the present embodiment, its concrete steps are:

[0037] (1) Raw material gasification: take liquid sulfur at 145°C as raw material, pump it into the gasification furnace for high-temperature gasification treatment at 688°C, and control the flow rate of liquid sulfur into the furnace to be 10 tons / 12h. The outlet gas temperature of the furnace was 590°C.

[0038] (2) Quenching treatment: Pass the obtained sulfur gas into the quenching liquid, and perform quenching treatment at 70°C to obtain a viscoelastic polymer; the quenching liquid of this embodiment is made of FeCl 3 、HNO 3 Prepared with water, where FeCl 3 The mass percentage of the total weight of the quenching liquid is 1.2%, HNO 3 The mass percentage accounting for the total weight of the quenching liquid is 2.6%.

[0039] The inventor found during the research process that the gasification and quenching process directly affects the quality of the poly...

Embodiment 3

[0053] A kind of production method of IS90 insoluble sulfur of the present embodiment, its concrete steps are:

[0054] (1) Raw material gasification: take liquid sulfur at 140°C as raw material, pump it into the gasification furnace for high-temperature gasification treatment at 695°C, and control the flow rate of liquid sulfur into the furnace to be 10.5 tons / 12h. The outlet gas temperature of the furnace was 610°C.

[0055] (2) Quenching treatment: Pass the obtained sulfur gas into the quenching liquid, and perform quenching treatment at 72°C to obtain a viscoelastic polymer; the quenching liquid of this embodiment is made of FeCl 3 、HNO 3 Prepared with water, where FeCl 3 The mass percentage of the total weight of the quenching liquid is 1.2%, HNO 3 The mass percentage accounting for the total weight of the quenching liquid is 2.9%.

[0056] (3) tablet washing: adopt tablet machine to carry out tabletting to the obtained viscoelastic polymer, control the thickness of t...

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Abstract

The invention discloses a preparation method of IS90 insoluble sulfur, and belongs to the technical field of sulfur production. The preparation method of the IS90 insoluble sulfur is characterized inthat liquid state sulfur is used as a raw material; gasification, sharp quenching treatment, tabletting, curing and crushing sieving treatment are performed to prepare an IS60 insoluble sulfur semi-finished product; then, through extraction, drying, sieving and oil charging treatment, an IS90 insoluble sulfur finished product is obtained, wherein the product obtained after the extraction, ammoniumpersulfate and sodium ethyl xanthate are mixed and are then subjected to drying treatment. Specific kinds of stabilizing agents are added into the sulfur production process; the sulfur production process is optimized, so that the thermal stability of the obtained insoluble sulfur can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of sulfur production, and more specifically relates to a preparation method of IS90 insoluble sulfur. Background technique [0002] Insoluble sulfur, also known as elastic sulfur or polymeric sulfur, is a linear polymer formed by the polymerization of a large number of sulfur atoms. The relative molecular weight can reach tens of thousands. It is a non-toxic, flammable yellow powder obtained because it is insoluble in carbon disulfide. It is an allotrope and a polymer modified variety of high-polymerization form of ordinary sulfur. Insoluble sulfur is mainly used in the rubber industry. It is a high-efficiency rubber vulcanizing agent, especially the vulcanizing agent in the production of all-steel radial wheels. It acts as a cross-link during the vulcanization process. It can solve the problem of blooming in the rubber production process. . At present, the existing insoluble sulfur is usually converted in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/12C08K3/06
CPCC01B17/12C01P2006/80C08K3/06
Inventor 陈杰胡建敏
Owner SHANGHAI JINGHAI ANHUI CHEM
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