Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for producing insoluble sulfur

A production method and technology of sulfur, which is applied in the field of continuous production of insoluble sulfur under normal pressure and in a fully enclosed state, can solve the problems of unstable batch quality, easy to block pipelines, and large dust pollution, so as to save crushing equipment and protect the production environment , the effect of avoiding pollution

Inactive Publication Date: 2009-01-07
广州市烨荣贸易有限公司
View PDF1 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the one-step production method of insoluble sulfur described in known patent No. 03117763.8, its high-temperature sulfur will be pressurized, and safety is poor; Its one-step semi-finished product all processes are finished in a tank, and process index control is difficult, and automation degree is low, and batch The quality is not stable; the semi-finished products have to be crushed, causing great dust pollution; high-temperature sulfur and carbon disulfide are fed into the mixer for cyclic quenching, which is easy to block the pipeline, making cleaning difficult and polluting the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing insoluble sulfur

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further elaborated below in conjunction with accompanying drawing and an embodiment of the present invention:

[0024] The production process of the present invention is as attached figure 1 shown

[0025] first step:

[0026] 1. Sulfur melting and heating: add industrial sulfur into the high-level open sulfur melting pool 1 with steam coils to melt, and put it into the electric heating airtight heating tank 2 through the connecting pipe to raise the temperature to 370-450 °C, and the top space of the heating tank 2 is used. Nitrogen protection.

[0027] 2. Extraction: Start the multifunctional rotary reaction tank 5, pump the 0°C low-temperature carbon disulfide in the storage tank 10 into the multifunctional rotary reaction tank 5 through the pump 10, the pump outlet valve 11, and the rotary joint 6 to one-third of the tank, and put The high-temperature sulfur at 370-450°C in the heating tank 2 is put into the rotating multifunctional ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for producing insoluble sulfur, which comprises the steps of melting sulfur, extracting, drying and pulverizing. By using the method, the insoluble sulfur is continuously produced under the totally-enclosed condition of normal pressure, nitrogen of normal pressure is used for sealing a heating groove, and the extracting step and the pulverizing step are completed in the same reactor. The specific operation steps are as follows in sequence: (1) melting the sulfur and heating up; (2) extracting and pulverizing; and (3) drying to obtain products produced through the method. The method has the advantages that: (1) the insoluble sulfur is continuously produced under the totally-enclosed condition of the normal pressure, and nitrogen is used for sealing the upper space of the sulfur heating groove, thereby resulting in no oxide leakage of carbon bisulfide and sulfur, and achieving safe and environmental-friendly production; (2) the pulverizing and quenching processes are finished in the same multifunctional rotary reactor, thus saving pulverizing devices, avoiding dust pollution when pulverizing, and protecting production environment.

Description

technical field [0001] The invention belongs to the technical field of insoluble sulfur preparation, and in particular relates to a method for continuously producing insoluble sulfur under normal pressure and in a fully enclosed state. Background technique [0002] Insoluble sulfur, a polymer of sulfur, gets its name from being insoluble in carbon disulfide. Widely used in the tire industry as a vulcanizing agent, the demand for insoluble sulfur is growing rapidly with tire radialization. Therefore, in recent years, the research on insoluble sulfur has also attracted more and more attention, and some production methods have also been developed, but there are some problems in quality stability, safety, environmental protection and other aspects. Such as the one-step production method of insoluble sulfur described in known patent No. 03117763.8, its high-temperature sulfur will be pressurized, and safety is poor; Its one-step semi-finished product all processes are finished i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/12
Inventor 张海生黄万
Owner 广州市烨荣贸易有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products