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A kind of production method of insoluble sulfur

A production method, sulfur technology, applied in the direction of sulfur preparation/purification, etc., can solve the problems of cumbersome transshipment process and low efficiency, and achieve the effect of safe equipment operation and maintenance, high production efficiency, and reduced pollution risk

Active Publication Date: 2021-03-12
广西联源机械化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] From searching the existing materials, it can be seen that in the process of the existing production of insoluble sulfur technology, processes such as quenching, washing, filtering, and drying are often completed with different equipment, and the transfer process is cumbersome and inefficient

Method used

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  • A kind of production method of insoluble sulfur
  • A kind of production method of insoluble sulfur

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The production method of insoluble sulfur, its step is as follows:

[0038](a) Sulfur melting: high-temperature steam is passed into the steam coil in the sulfur melting pool, and the steam coil heats the sulfur powder with a purity of more than 99.95% to a molten state of 110 °C;

[0039] (b) Gasification: The molten liquefied sulfur in the molten sulfur pool is pumped into the sulfur gasification evaporator, and the evaporator heats the sulfur to 450°C to generate high-temperature sulfur vapor, and inert gas is introduced into the evaporator tank to convert the sulfur vapor Press into the sulfur steam pipeline located above the evaporator with a pressure of 0.3MPa; use nitrogen to replace the air in the evaporator tank before using the evaporator;

[0040] (c) Quenching: The high-temperature sulfur steam is passed through the pipeline to the nozzle outlet of the reactor, and the 10°C carbon disulfide liquid nozzle fed into another pipeline is sprayed oppositely in the...

Embodiment 2

[0048] The production method of insoluble sulfur, its step is as follows:

[0049] (a) Sulfur melting: high-temperature steam is introduced into the steam coil in the sulfur melting pool, and the steam coil heats the sulfur powder with a purity of more than 99.95% to a molten state of 130°C;

[0050] (b) Gasification: The molten liquefied sulfur in the molten sulfur pool is pumped into the sulfur gasification evaporator, and the evaporator heats the sulfur to 500°C to generate high-temperature sulfur vapor, and inert gas is introduced into the evaporator tank to convert the sulfur vapor Press into the sulfur steam pipeline located above the evaporator with a pressure of 0.5MPa; use nitrogen to replace the air in the evaporator tank before using the evaporator;

[0051] (c) Quenching: The high-temperature sulfur steam is passed through the pipeline to the nozzle outlet of the reactor, and the 15°C carbon disulfide liquid nozzle fed into another pipeline is sprayed oppositely in...

Embodiment 3

[0059] The production method of insoluble sulfur, its step is as follows:

[0060] (a) Sulfur melting: high-temperature steam is introduced into the steam coil in the sulfur melting pool, and the steam coil heats the sulfur powder with a purity of more than 99.95% to a molten state of 120°C;

[0061] (b) Gasification: The molten liquefied sulfur in the molten sulfur pool is pumped into the sulfur gasification evaporator, and the evaporator heats the sulfur to 480°C to generate high-temperature sulfur vapor, and the inert gas is introduced into the evaporator tank to dissipate the sulfur vapor Press into the sulfur steam pipeline located above the evaporator with a pressure of 0.4MPa; use nitrogen to replace the air in the evaporator tank before using the evaporator;

[0062] (c) Quenching: The high-temperature sulfur steam is passed from the pipeline to the outlet of the reactor nozzle, and the 12°C carbon disulfide liquid nozzle that is fed into another pipeline is sprayed op...

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Abstract

The invention relates to a production method of insoluble sulfur. The production steps are composed of a series of production processes of melting sulfur, gasification, quenching, washing, drying, post-treatment, distillation and condensation. It is characterized in that a horizontal rotary reactor is used The processes of quenching, washing and drying are carried out; the production method of the present invention has the advantages of high production efficiency, high purity of produced products, complete recycling of materials, no discharge of toxic substances, etc., and is suitable for large-scale industrial production of insoluble sulfur products for radial tires.

Description

technical field [0001] The invention relates to the field of chemical production, in particular to a production method of insoluble sulfur. Background technique [0002] Insoluble sulfur is a non-toxic, flammable yellow powder, named for its insolubility in carbon disulfide. It is prepared by thermal polymerization of ordinary sulfur. The number of sulfur atoms in the molecular chain is as high as 108 or more. It has the viscoelasticity and molecular weight distribution of high polymers. Therefore, it is also called elastic sulfur or polymeric sulfur. It belongs to inorganic polymer chemical raw materials. Because it is insoluble in rubber, it is not easy to produce early vulcanization and sulfur injection in the rubber compound, and does not damage the adhesiveness of the rubber compound. It is an important chemical raw material for the manufacture of radial tires. [0003] In the existing production process of insoluble sulfur, the one-step method is a more advanced produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/12
CPCC01B17/12
Inventor 廖俊文潘涛廖海孙富和廖俊平古小玫
Owner 广西联源机械化工有限公司
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