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High-quality polytetrafluoroethylene emulsion automatic continuous concentration system and method thereof

A polytetrafluoroethylene, concentration system technology, applied in chemical instruments and methods, separation methods, evaporation and other directions, can solve the problems of large fluctuations in the operation process, inability to operate continuously, poor emulsion stability, etc., and achieve low unit consumption of emulsion, excellent Chemical stability, the effect of less emulsifier dosage

Pending Publication Date: 2019-04-19
福建三农新材料有限责任公司
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Problems solved by technology

[0007] Unable to operate continuously, large fluctuations in the operation process, easy to break the emulsion, and poor stability of the emulsion
Moreover, in the prior art, the thermal concentration method has the lowest efficiency, large amount of sewage, batch operation of intermittent vacuum concentration, low efficiency, and long-term concentration leads to serious demulsification

Method used

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  • High-quality polytetrafluoroethylene emulsion automatic continuous concentration system and method thereof

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] In the prior art, continuous operation is impossible, the operation process fluctuates greatly, the emulsion is easily broken, and the stability of the emulsion is poor.

[0047] The application of the present invention will be described in detail below in conjunction with specific solutions.

[0048] The high-quality polytetrafluoroethylene emulsion automatic continuous concentration method provided by the embodiment of the present invention includes:

[0049] Set the concentration target density and the feed flow rate of the feed regulating valve, the target density is 1.5±0.1kg / l, and the feed flow rate is 100-50...

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Abstract

The invention belongs to the field of automatic continuous concentration technology of a polytetrafluoroethylene emulsion, and discloses a high-quality polytetrafluoroethylene emulsion automatic continuous concentration system and a method thereof. The high-quality polytetrafluoroethylene emulsion automatic continuous concentration system comprises: a vacuum concentration screw machine; the automatic continuous concentration system adopts a dispersion polymerization liquid collection tank as the starting point and a finished product collection tank as the end point to form a complete vacuum system; a dispersed polymerization liquid controls the output through a feed regulating valve, and the concentration time is adjusted by a frequency control screw; a dispersion buffer tank, a vacuum concentration screw machine and an emulsion filter form a core concentration unit, the vacuum concentration screw machine is provided with an outer jacket, and a circulating hot water regulating valve isinterlocked with the temperature of the concentrated screw machine. The novel technology of the invention is advanced and is stable to operate, has high production efficiency, and is low-cost; and the product has stable quality. The product is resistant to strong acid, strong base, strong oxidant, etc., and has outstanding heat resistance, cold resistance and abrasion resistance.

Description

technical field [0001] The invention belongs to the technical field of automatic continuous concentration of polytetrafluoroethylene emulsion, and in particular discloses an automatic continuous concentration system and method of high-quality polytetrafluoroethylene emulsion. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] At present, most of the concentration methods used for the dispersion liquid adopt the thermal concentration method of adding emulsifier and inert salt, or the intermittent vacuum concentration method. [0004] The thermal concentration method has the lowest efficiency and a large amount of sewage. [0005] Batch operation of intermittent vacuum concentration has low efficiency, and long-term concentration will lead to serious demulsification. [0006] In summary, the problems in the prior art are: [0007] It cannot be operated continuously, the operation process fluctuates grea...

Claims

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Application Information

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IPC IPC(8): C08F6/20C08L27/18B01D1/00
CPCB01D1/00C08F6/20C08L27/18
Inventor 余道腾徐万鑫徐美燚朱剑峰
Owner 福建三农新材料有限责任公司
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