Dehydrating and drying method for producing isoprene rubber through solution polymerization process

A technology of isoprene rubber and drying method, which is applied in the field of dehydration and drying of isoprene rubber produced by solution polymerization method, can solve the problems of high labor intensity of workers, high equipment cost, and high requirements for workshops, and reduce equipment failure rate and equipment maintenance The effect of saving cost, saving equipment investment, and reducing labor intensity

Inactive Publication Date: 2012-06-13
广东鲁众华新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the two machines rely on mechanical force to finally complete the removal of volatile matter, they have very high requirements for equipment. The characteristics of high equipment cost, high energy consumption, and high requirements for workshops determine the large investment in equipment and high producti

Method used

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  • Dehydrating and drying method for producing isoprene rubber through solution polymerization process
  • Dehydrating and drying method for producing isoprene rubber through solution polymerization process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After removing most of the condensed water by the dehydration vibrating screen, the isoprene rubber particles contain 38% water, and enter the integrated machine 1 at 2 tons / hour, first pass through the extrusion dehydration section 3, and are pushed by the mechanical force of the rotating screw 2 Entering the expansion drying section 4, the extruded water is discharged through the drain 5 at the bottom. In the expansion drying section 4, the temperature of the material continues to rise under the combined action of the screw 2 and the shear screw 6. The material pressure in the extrusion dehydration expansion drying machine is controlled by the opening ratio of the template 7, and the material is extruded from the template 7. At the moment, the volatile substances in it are vaporized and drawn out due to the sudden drop in pressure, and the material enters the next process. During the dehydration and drying process, the screw speed of the integrated machine is controll...

Embodiment 2

[0018] After removing most of the condensed water by the dehydration vibrating screen, the isoprene rubber particles contain 35% water and enter the integrated machine 1 at a rate of 3 tons per hour. First, they pass through the extrusion dehydration section 3 and are pushed by the mechanical force of the rotating screw 2. Entering the expansion drying section 4, the extruded water is discharged through the drain 5 at the bottom. In the expansion drying section 4, the temperature of the material continues to rise under the combined action of the screw 2 and the shear screw 6. The material pressure in the extrusion dehydration expansion drying machine is controlled by the opening ratio of the template 7, and the material is extruded from the template 7. At the moment, the volatile substances in it are vaporized and drawn out due to the sudden drop in pressure, and the material enters the next process. During the dehydration and drying process, the screw speed of the extrusion d...

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Abstract

A dehydrating and drying method for producing isoprene rubber through a solution polymerization process comprises the steps as follows: isoprene rubber material synthesized through the solution polymerization process is separated from solvent through a condensation procedure and then is dehydrated through a dehydration sieve; thereafter, the material is continuously fed into an extrusion dehydrating and expansion drying integrated machine, passes through an extrusion dehydrating segment and an expansion drying segment sequentially under the push of a screw rod, and then gets out of a mold plate at the tail end of the expansion drying segment, so as to form the isoprene rubber. The rotational speed of the screw rod is controlled within the range of100 to 250 rpm, the temperature of the extrusion dehydrating segment is 80 to 140 DEG C, and the temperature of the expansion drying segment is 150 to 220 DEG C. While the dehydrating and drying effect of the aftertreatment procedure of isoprene rubber granules is guaranteed, the drying process in the aftertreatment procedure is simplified, so as to reduce device investment and the labor intensity of workers and further reduce production cost.

Description

technical field [0001] The invention belongs to the technical field of synthetic rubber production, and in particular relates to a dehydration and drying method for the production of isoprene rubber by a solution polymerization method. Background technique [0002] In the process of producing isoprene rubber by solution polymerization, the isoprene rubber material from which most of the solvent has been removed through water coagulation requires further removal of volatile substances such as water and residual solvents, and finally forms a block or granular product. In the traditional synthetic rubber production process, the mixture of colloidal particles and water after water analysis and coagulation is first separated from the colloidal particles and a large amount of water through a dehydration vibrating screen, and then the synthetic rubber material with a moisture content of less than 40% enters an extruder Compression dehydration machine, under the extrusion action of ...

Claims

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Application Information

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IPC IPC(8): C08F36/08C08C3/02C08F2/04
Inventor 崔广军胡中玉于俊伟
Owner 广东鲁众华新材料有限公司
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