Method for producing insoluble sulfur by using liquid phase method

A liquid phase method, sulfur technology, applied in the preparation/purification of sulfur, etc., can solve the problems of poor thermal stability and dispersibility, high production cost, flammability and explosion, etc., to improve melting point and dispersibility, and ensure high thermal stability Sex, avoid flammable and explosive effects
CN102020249AActive Publication Date: 2011-04-20朝阳明宇化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
朝阳明宇化工有限公司
Publication Date
2011-04-20

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Abstract

The invention discloses a method for producing insoluble sulfur by using a liquid phase method, which comprises the following steps of: adding sulfur into a melting kettle, keeping for 30-40 min at a temperature of 340-350 DEG C, then spraying FeCl3, HNO3 and H2O quenching liquid for quenching; extracting aged 60 strip with a CS2 solvent for 3-4 times to ensure that the content of insoluble sulphur is not less than 95 percent, wherein the aged 60 strip is extracted for 40-50min each time; stabilizing an extractant for 20-40min by using a composite stabilizing agent prepared from KCl, KClO3 and acid water solution; drying for 30-40 min at a temperature of 70-80 DEG C to ensure that the water content is controlled below 0.5 percent; charging oil for absorbing by respectively using naphthenic oil and liquid rubber after drying; and crushing oil charged adsorbate to 100-180mu to obtain the insoluble sulfur. The insoluble sulfur prepared by using the method of the invention has the characteristics of high thermal stability, high content of insoluble sulphur, high dispersibility and high thinness. The method has the advantages of simple operation, high efficiency, low cost and high safety, and is suitable for industrialized production.
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Description

technical field

[0001] The invention relates to a method for preparing sulfur, in particular to a method for producing insoluble sulfur by a liquid phase method with high temperature stability. Background technique

[0002] Insoluble sulfur (insoluble means insoluble in carbon disulfide, referred to as IS) is a macromolecule polymerized by hundreds of thousands or even millions of sulfur atoms. It belongs to inorganic polymers. It is a rubber vulcanizing agent with excellent performance. The surface of the finished product or semi-finished product does not spray frost and increases the adhesion, which is conducive to improving the operating environment. At the same time, it is also a good rubber vulcanization accelerator, which can accelerate the vulcanization speed and make the vulcanization even. At present, insoluble sulfur has been widely used in tire carcass rubber, buffer rubber, white sidewall rubber and the bonding rubber of skeleton materials, which can improve the...

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
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