Medium grade insoluble sulphur preparing process and producing apparatus

A sulfur and soluble technology, applied in the field of preparation of medium-grade insoluble sulfur, can solve the problems of unstable product quality, high energy consumption, complicated operation, etc., and achieve the effect of high primary utilization rate, low energy consumption and high conversion rate

Active Publication Date: 2008-10-22
SINOPEC NANJING RES INST OF CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has disadvantages such as high energy consumption, complicated operation and unstable product quality.

Method used

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  • Medium grade insoluble sulphur preparing process and producing apparatus
  • Medium grade insoluble sulphur preparing process and producing apparatus
  • Medium grade insoluble sulphur preparing process and producing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] Pour 10,000 grams of 99.95% industrial high-grade sulfur into the high-level sulfur melting tank (1) to melt it into liquid sulfur. The temperature is controlled below 150°C. At this temperature, the viscosity of liquid sulfur is very small. and 0.5 g I 2, and 7.5 grams of DM were added together into the reaction kettle (2) with stirring, heating and temperature control systems, until the temperature of the sulfur melt reached 280° C., and kept constant for 1 hour. The molten sulfur flows into the orifice device (3) through the insulated discharge valve (10), and the flow rate is controlled at 1kg / min, so that the liquid sulfur passes through the orifice (6) evenly and stably. The liquid sulfur flowing out from the orifice plate (6) enters the quenching tower (4) and is fully contacted with the coolant to be rapidly cooled into an elastic transparent body, and the elastic transparent body falls on the belt conveyor (5) with the coolant and is sent to the oven (6) ) at ...

Embodiment approach 2

[0033] Pour 10,000 grams of 99.95% industrial high-grade sulfur into the high-level sulfur melting tank (1) to melt it into liquid sulfur. The temperature is controlled below 150°C. At this temperature, the viscosity of liquid sulfur is very small. and 0.5 g CH 2 = CHCl, 7.5 grams of DZ were added together into the reactor (2) with a stirring, heating and temperature control system, until the temperature of the sulfur melt reached 290°C, and kept constant for 1 hour. The molten sulfur flows into the orifice device (3) through the insulated discharge valve (10), and the flow rate is controlled at 0.8kg / min, so that the liquid sulfur passes through the orifice (6) evenly and stably. The liquid sulfur flowing out from the orifice plate (6) enters the quenching tower (4) and is fully contacted with the coolant to be rapidly cooled into an elastic transparent body, and the elastic transparent body falls on the belt conveyor (5) with the coolant and is sent to the oven (6) ), dryin...

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Abstract

The process of preparing medium grade insoluble sulfur with industrial pure sulfur and composite stabilizer as material includes the steps of: low temperature smelting and polymerizing, passing the molten sulfur through heat insulated orifice plate and entering homogeneously and stably to specially designed quench tower to cool fast to below 60 deg.c and to become transparent elastomer, flowing out together with the coolant, and dewatering and drying to obtain medium grade insoluble sulfur. The present invention has the advantages of convenient operation, high safety and stability, low running cost, high conversion rate, etc. and is suitable for preparing insoluble sulfur with high content, high heat stability and high fineness.

Description

Technical field: [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a method for preparing medium-grade insoluble sulfur and production equipment thereof. Background technique: [0002] Insoluble sulfur (Insoluble Sulfur) referred to as IS refers to polymerized sulfur insoluble in carbon disulfide. It is a rubber vulcanizing agent with excellent performance. It has the best non-blooming property, which can effectively prevent rubber scorching and improve the adhesion between rubber and steel wire or chemical fiber cord. At present, it is widely used as a special vulcanizing agent for the production of radial tires. With the rapid development of the automobile industry, the use of radial tires has increased dramatically, and the demand for insoluble sulfur has also greatly increased. At present, my country has to rely on a large amount of imports every year to meet the demand for insoluble sulfur. Therefore, the market prosp...

Claims

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Application Information

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IPC IPC(8): C01B17/12
Inventor 江碧清吴卫民李娜张兰美
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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