Polymer solution steam stripping flocculation separation method and apparatus

A polymer solution and separation device technology, applied in steam distillation, sustainable manufacturing/processing, chemical industry, etc., can solve problems such as difficult to guarantee concentration effect, difficult to recover heat, energy waste, etc., to save equipment investment and electric energy , the residual solvent content is reduced, and the effect of improving the coagulation effect

Active Publication Date: 2008-12-03
FUSHUN YIKESI NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong cohesiveness of the uncoagulated polymer particles coming out of the first coagulation tank, it is easy to stick and block the filter surface and cannot operate normally, so that this type of filter uses filtration as the main means to separate polymer particles and water. It is difficult to guarantee the thickening effect of the concentrated thickening separator
In addition, the high-temperature polymer particle water coming out of the second condensation tank loses a considerable amount of heat in the post-treatment flash evaporation. Since there is no heat exchange device suitable for the polymer particle water, it is difficult to recover this part of the heat, resulting in energy waste
The application document No. 2007100143185 discloses an improved technical polymer solution stripping coagulation separation device and its separation method, but this application still fails to completely overcome the shortcomings of the prior art

Method used

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  • Polymer solution steam stripping flocculation separation method and apparatus
  • Polymer solution steam stripping flocculation separation method and apparatus
  • Polymer solution steam stripping flocculation separation method and apparatus

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0020] Embodiment 1: A polymer solution stripping coagulation efficiency enhancement and energy saving device.

[0021] The main body of this embodiment includes a first coagulation kettle 1, a second coagulation kettle 2, a thickening separator 3, a polymer particle water regulator 4, a polymer particle water pump 5, a circulating hot water pipeline 6 from post-treatment, and a polymerization Product solution pipeline 7, heating steam pipeline 8 and 12, the polymer particle water pipeline 9 that comes out from the first condensation kettle, concentrate water pipeline 10, the polymer particle water pipeline 11 that is concentrated, steam out from the first condensation kettle The steam pipeline 13, the steam steam pipeline 14 from the first condensation tank, the polymer particle water pipeline 15 for post-treatment, the concentrated water flow regulator 16 and the concentrated water flow meter 17.

[0022] The present embodiment comprises the first coagulation still 1 and the...

Embodiment 2

[0026] Embodiment 2: A polymer solution stripping coagulation synergistic energy-saving separation method.

[0027] 100 liters / hour of rare earth isoprene rubber glue with 15% glue concentration enters the first condensation kettle 1 from pipeline 7, and 1000 liters / hour of circulating hot water containing dispersant from aftertreatment enters the first coagulation kettle from pipeline 6. A condensation kettle 1, heated water vapor enters the first condensation kettle 1 from the pipeline 8; the temperature of the first condensation kettle 1 is 85°C, the pressure is 0.02MP(G), and the evaporated solvent and water vapor are condensed from the pipeline 13 Recovery system; the polymer particle water containing polymer 1% from the first coagulation kettle 1 enters the thickening separator 3 through the adjustment valve 4 from the pipeline 9, and extracts 500 liters / hour from the lower part of the thickening separator 3 after adjustment 16 and flow meter 17 enter the colloidal parti...

Embodiment 3

[0028] Embodiment 3: A method for stripping, coagulation, efficiency and energy-saving separation of polymer solution.

[0029] 100 liters / hour of rare earth isoprene rubber glue solution with 15% glue solution concentration enters the first coagulation kettle 1 from pipeline 7, and 500 liters / hour of circulating hot water containing dispersant from aftertreatment enters the first condensation kettle from pipeline 6. A condensation tank 1, heated water vapor enters the first condensation tank 1 from the pipeline 8; the temperature of the first condensation tank is 85°C, the pressure is 0.02MP(G), and the evaporated solvent and water vapor are condensed and recovered from the pipeline 13 System; the polymer particle water containing polymer 2% that comes out from the first coagulation kettle 1 enters the thickening separator 3 through the regulating valve 4 from the pipeline 9, and extracts 250 liters / hour from the thickening separator 3 bottom through the regulating valve 16 a...

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PUM

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Abstract

The invention belongs to the polymer production technical field, relating to a highly-efficient energy-saving method for separating a polymer solution of synthetic rubber, synthetic resin and plastic by stripping condensation and a device for carrying out the same. A concentration separator for polymer grainy water is arranged on a polymer grainy water pipe between a first condensation boiler and a second condensation boiler which are in serial connection in a two-boiler condensation process of a polymer solution to increase the polymer concentration of the polymer grainy water, and carry out phrase separation in the concentration separator; the concentration separator is arranged vertically, and consists of a cylindrical suspension section at the lower part, a cone-shaped transition section in the middle and a cylindrical lifting section at the upper part which are communicated; a metal wire net cage is arranged outside the export pipe of the concentration water at the bottom of the suspension section, a steam lifting pipe is arranged at the lower part of the lifting section; the device can improve the condensation effect, obviously reduces the content of the remaining solvent of polymer particles, has remarkable economic benefits, and reduces environmental pollution caused by the solvent.

Description

Technical field: [0001] The invention belongs to the technical field of polymer production, and relates to an improved steam stripping coagulation separation method and a device for polymer solutions such as synthetic rubber, synthetic resin and plastics, which have synergistic and energy-saving effects. Background technique: [0002] The polymer solution obtained by the solution polymerization method is currently widely used to separate the polymer from the solvent by steam stripping and coagulation in hot water. At present, the multi-pot coagulation technology (two or more stirred tanks connected in series) is widely used in terms of coagulation effect and energy consumption. It is superior to the early single-pot coagulation and tower coagulation technology (Yu Leshun, Synthetic Rubber Industry, 1978, 1(5), 1; Shengli Chemical Plant of Beijing Yanshan Petrochemical Company, Synthetic Rubber Industry, 1978, 1(4), 1; Zhao Duoshan, Synthetic Rubber Industry, 1986, 9(5), 318;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/38C08C2/06C08F6/12
CPCY02P20/10
Inventor 虞乐舜韩方煜
Owner FUSHUN YIKESI NEW MATERIAL
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