Ultrasonic atomization micro-mixer, micro-channel reactor, prepolymerization system and para-aramid resin continuous polymerization reaction system and method

A technology of microchannel reactor and mixed reactor, which is applied in the field of chemical reaction system, can solve the problems of wide molecular weight distribution coefficient of para-aramid resin, poor uniformity of polymer molecular weight distribution, and inability to quickly and effectively transfer heat of reaction, so as to prevent Effects of implosion polymerization and low molecular weight by-products, enhanced stirring and mixing efficiency, and stable and controllable intrinsic viscosity
CN110605079APending Publication Date: 2019-12-24惠生(中国)投资有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
惠生(中国)投资有限公司
Publication Date
2019-12-24

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Abstract

The invention provides an ultrasonic atomization micro-mixer, an ultrasonic oscillation micro-channel reactor, a prepolymerization system and a para-aramid resin continuous polymerization reaction system and method. The ultrasonic atomization micro-mixer comprises a mixing reactor body and an ultrasonic atomizer. The side lower part of the mixing reactor body is connected with a first raw materialinlet channel and a second raw material inlet channel in a penetrating manner, The ultrasonic atomizer acts in the first raw material inlet channel and the second raw material inlet channel and is used for atomizing a first raw material and a second raw material. A first outlet is formed in the upper end of the mixing reactor body, and a second outlet is formed in the lower end of the mixing reactor body. According to the technical scheme, the problem that in the para-aramid resin preparation process, reaction heat in the pre-polymerization stage is difficult to remove, and consequently temperature rise is large is solved, implosion and generation of low-molecular-weight byproducts caused by local overheating of a reaction system are prevented, and it is guaranteed that the intrinsic viscosity of product resin is stable and controllable.
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Description

technical field

[0001] The invention relates to a chemical reaction system and method, in particular to a para-aramid resin continuous polymerization reaction system and method. Background technique

[0002] Para-aramid fiber is poly-paraphenylene terephthalamide fiber, which is called aramid fiber 1414 in my country. It is one of the fastest-growing varieties of high-performance fibers today and is a high-tech product with excellent comprehensive performance. fiber. Para-aramid fiber has excellent properties such as high strength, high modulus, high temperature resistance, acid resistance, alkali resistance and low density. Its specific tensile strength is 8 times that of steel wire (≥5Gpa), and its specific modulus is 3~ 4 times (≥148Gpa), the decomposition strength is 550°C, the limiting oxygen index LOI is 29, the toughness is twice that of steel wire, and the density is only about 1 / 5 of steel wire. It can not only be used to make advanced composite materials such as r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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