A kind of batch production method of polyethylene plastic pellets
A mass production, polyethylene technology, applied in the field of polyethylene production, can solve the problems of large differences in the degree of polyethylene polymerization, affecting the quality of polyethylene production, uneven heating of polyethylene raw materials, etc., to improve batch production efficiency and production quality. Increased, highly aggregated effects
Active Publication Date: 2020-08-28
DONGGUAN CAI YAN PLASTIC TABLETAB
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Problems solved by technology
[0003] The application range of polyethylene rubber particles is very wide. The traditional production process of polyethylene rubber particles has many procedures and complicated production equipment. In addition, in the polyethylene preparation process, the polyethylene raw materials are not heated uniformly, and the degree of polymerization of the produced polyethylene The difference is large, which affects the quality of polyethylene production
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[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0030] Such as Figure 1-6 Shown, a kind of polyethylene plastic granule batch production method of the present invention, this production method comprises the steps:
[0031] Step 1: Add raw materials required for polyethylene production, including ethylene gas and catalyst, into the reaction chamber 1 through the feed port 2, and close the feed port 2;
[0032] Step 2: Pressurize the reaction chamber 1 with the pressurized stirring module 4 to keep the pressure between 113 and 196 MPa, and at the same time, keep the temperature in the reaction chamber 1 between 150°C and 280°C through the heater 3, and Mix the raw materials in the reaction chamber 1; wherein, the reaction temperature is set according to the type of initiator added later;
[00...
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The invention belongs to the technical field of polyethylene production and in particular relates to a batch production method for polyethylene plastic particles. The production method comprises the following steps: adding raw materials, ethylene gas and a catalyst needed by polyethylene production into a polymerization reactor, and closing the feeding hole; pressurizing the interior of the polymerization reactor, maintaining the pressure to be 113-196 MPa, maintaining the temperature in the polymerization reactor to be 150-280 DEG C, and uniformly mixing the raw materials in the polymerization reactor; introducing an initiator oxygen or peroxide into the polymerization reactor, and performing high pressure polymerization on ethylene, wherein the pressure is 113-196 MPa; performing compression granulatin on the polymerized polyethylene by using the polymerization reactor. According to the method disclosed by the invention, the batch production method for polyethylene plastic particlesis improved by the polymerization reactor, so that the polyethylene is uniformly heated during production, the degree of polymerization is high and uniform, the quality of the polyethylene plastic particles is improved, the just produced polyethylene can be automatically granulated, and the batch production efficiency of the polyethylene plastic particles is improved.
Description
technical field [0001] The invention belongs to the technical field of polyethylene production, in particular to a batch production method of polyethylene plastic particles. Background technique [0002] Polyethylene is mainly used to make films, containers, pipes, monofilaments, wires and cables, daily necessities, etc., and can be used as high-frequency insulation materials for TVs and radars. Polyethylene is a kind of thermoplastic resin obtained by polymerization of ethylene; polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100~-70°C), and has good chemical stability , resistant to most acid and alkali erosion (not resistant to oxidizing acids), insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation, melting point, rigidity, hardness and strength of low-pressure polyethylene, high water absorption Small, with good electrical propert...
Claims
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IPC IPC(8): C08F110/02C08F2/01B29B9/10B29B9/00
CPCB29B9/00B29B9/10C08F110/02C08F2/01
Inventor 梁格
Owner DONGGUAN CAI YAN PLASTIC TABLETAB