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Drying process for insoluble sulfur and process equipment for insoluble sulfur

A drying process and soluble technology, which is applied in the field of insoluble sulfur drying process and its process equipment, can solve the problems of not improving the drying process, etc., and achieve the effects of favorable condensation recovery, fast heat transfer speed, good economic and social benefits

Active Publication Date: 2015-02-18
SHANDONG YANGGU HUATAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drying process of this method is carried out in a traditional vacuum dryer and does not improve the drying process

Method used

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  • Drying process for insoluble sulfur and process equipment for insoluble sulfur

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Comparison scheme
Effect test

Embodiment 1

[0033] A process equipment for insoluble sulfur drying, including the first mixing silo 1 and the second mixing silo 2, feeder 3, drying tower 4, cyclone collector 5, first nitrogen replacement silo 6, bag type Dust collector 7 , second nitrogen replacement bin 8 , condenser 9 , deep cooler 10 , liquid collection tank 12 , water seal tank 13 , heat exchanger 15 and fan 16 .

[0034] Wherein, the first mixing silo 1 and the second mixing silo 2 communicate with the feeder 3 respectively; the feeder 3 communicates with the lower part of the drying tower 4; the top of the drying tower 4 communicates with the cyclone collector 5; the cyclone collector The top of the bag filter 7 is connected to the bag filter 7, and the lower end of the cyclone collector 5 is connected to the first nitrogen replacement bin 6; the bag filter 7 is connected to the condenser 9, and the lower end of the bag filter 7 is connected to the second nitrogen replacement bin 8; the condenser 9 communicates wi...

Embodiment 2

[0036] A drying process for insoluble sulfur, the process is as follows:

[0037] Start the process equipment, charge carbon disulfide gas into the drying tower 4 and make the hot air circulation system greater than the dew point temperature, start the heat exchanger 15 and the circulation fan 16, and keep the air volume at 1000m 3 / h, control the wind temperature at 80-85 degrees Celsius. 150kg of insoluble sulfur powder containing 30% carbon disulfide in the first mixing silo 1 and the second mixing silo 2 are evenly sent into the drying tower 4 through the closed feeder 3, and the mixing temperature at the top of the drying tower is controlled at 50 by controlling the feeding amount. -55 degrees Celsius.

[0038] After the insoluble sulfur powder material is delivered, close the heat exchanger 15 and the fan 16, respectively fill the first nitrogen replacement bin 6 below the collector 5 and the second nitrogen replacement bin 8 below the dust collector 7 with nitrogen and...

Embodiment 3

[0041] A kind of drying process of insoluble sulfur, technological process is as described in embodiment 2, and its difference is, the temperature of the carbon disulfide gas hot blast that controls to pass into drying tower 4 is at 70-75 degree Celsius, and wind speed is 2.5m / s. Obtain insoluble sulfur powder 104.8kg at last, reclaim carbon disulfide liquid 43.65kg in the liquid collecting tank 12, solvent recovery rate reaches more than 96%, insoluble sulfur powder heating loss is 0.24%, meets the requirement that qualified product is less than 0.5%.

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Abstract

The invention relates to a drying process for insoluble sulfur and process equipment for the insoluble sulfur. The process method comprises the following steps: hot carbon disulfide gas is used as a drying medium and the carbon disulfide gas medium carries heat to form gas flow; the gas flow is used for dynamically drying the insoluble sulfur containing a liquid medium; the heat transmission speed is rapid, the drying efficiency is high and foreign gas is prevented from entering. Meanwhile, a dust remover is connected with a heat exchanger, a draught fan and a drying tower in the process and the insoluble sulfur powder is circularly dried, so that the recycling and drying efficiency of the insoluble sulfur powder is improved; meanwhile, a circular drying process is more energy-saving and environment-friendly. The whole drying process and the drying equipment have reasonable design, obvious effect and remarkable effect, have good economic benefits and social benefits, and are worthy of being popularized and applied by enterprises.

Description

technical field [0001] The invention relates to a drying process of insoluble sulfur and its process equipment, in particular to a drying process of insoluble sulfur containing carbon disulfide, which belongs to the technical field of fine chemicals. Background technique [0002] Insoluble sulfur is an allotrope of ordinary sulfur. It is a linear polymer formed by the polymerization of a large number of sulfur atoms. It is insoluble in carbon disulfide and rubber, so it is called insoluble sulfur or polymeric sulfur. The scientific name is high Molecular polymerized sulfur, which is mainly used as a vulcanizing agent in the rubber industry, is widely used in the production of rubber products such as tires. The production of insoluble sulfur usually involves heating the molten liquid sulfur to a certain temperature, quenching it with a cooling medium, and then solidifying, extracting, drying, pulverizing, and filling with oil to obtain the finished insoluble sulfur. At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B15/00F26B21/00
Inventor 魏承磊杜孟成王维民
Owner SHANDONG YANGGU HUATAI CHEM
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