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Reaction device and method for preparing light hydrocarbon alternating copolymerization microspheres

A reaction device and a technology of alternating copolymerization, which is applied in the field of preparing light hydrocarbon alternating copolymerization microspheres, can solve the problems of undisclosed reaction device and reaction method, and achieve the effect of realizing effective requirements, accurately controlling reaction temperature and improving conversion rate.

Active Publication Date: 2021-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

against maleic anhydride and C 2-4 The self-stabilizing precipitation polymerization of unsaturated hydrocarbons obtains reaction products with specific properties, and no related reaction devices and reaction methods are disclosed in the prior art

Method used

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  • Reaction device and method for preparing light hydrocarbon alternating copolymerization microspheres

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] use as figure 1 The reaction apparatus shown for the preparation of light hydrocarbon alternating copolymerization microspheres was carried out. The reaction device includes a reactor 1, a gas-liquid separator 2 and a centrifuge (not shown in the figure) connected in sequence.

[0096] The reactor 1 includes a horizontally arranged reactor shell 101 with a circular cross-section, a hollow spiral tube 105 arranged inside the reactor shell 101, and material first and second tubes respectively arranged at opposite ends of the reactor shell 101. An inlet 102 and a material outlet 103, the second inlet 104 for the material in the middle of the reactor housing 101 (that is, the second inlet 104 for the material is located from the first inlet 102 to the first inlet 102 for the material) 50% of the total length of the material outlet 103).

[0097] The pipe diameter of hollow spiral tube 105 is 55cm, and pitch is 25cm, and the diameter of the tube body that hollow spiral tub...

Embodiment 2

[0107] Carry out according to the method for embodiment 1, difference is:

[0108] Using mixed carbon four B instead of mixed carbon four A, the mixed carbon four B composition (weight percentage) is: 1,3-butadiene 0.06%, trans-2-butene 12.67%, isobutane 37.09%, isobutene 19.48%, Cis-2-butene 27.79%, 1-butene 1.02%, others 1.89%;

[0109] Organic reaction liquid is made up of 13.5kg mixed carbon four B, 20kg maleic anhydride, 4kg dibenzoyl peroxide and 100L isoamyl acetate;

[0110] The copolymerization reaction pressure is 1MPa, the copolymerization reaction temperature is 80°C, and the copolymerization reaction time is 6h;

[0111] The centrifugation condition is 4000rpm, 20min;

[0112] Thus, solid copolymer particle powder B was prepared.

Embodiment 3

[0114] Carry out according to the method for embodiment 1, difference is:

[0115] Use mixed carbon four C instead of mixed carbon four A, mixed carbon four C composition (percentage by weight): trans 2-butene 40.83%, cis 2-butene 18.18%, n-butane 24.29%, 1-butene 9.52% , Isobutene 2.78%, Other 4.4%.

[0116] The organic reaction solution is composed of 15kg of mixed C4C, 20kg of maleic anhydride, 4.5kg of dibenzoyl peroxide and 100L of isoamyl acetate;

[0117] The copolymerization reaction pressure is 1.5MPa, the copolymerization reaction temperature is 80°C, and the copolymerization reaction time is 10h;

[0118] The centrifugation condition is 8000rpm, 20min;

[0119] Thus, solid copolymer particle powder C was prepared.

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Abstract

The invention relates to the field of polymerization reaction, and discloses a reaction device for preparing light hydrocarbon alternating copolymerization microspheres and a method for preparing light hydrocarbon alternating copolymerization microspheres. The reaction device comprises a reactor (1) and a gas-liquid separator (2); the reactor (1) comprises a reactor shell (101), and a hollow spiral tube (105) arranged inside the reactor shell (101) , the material first inlet (102), the second material inlet (104) and the material outlet (103) arranged on the reactor shell (101); the second material inlet (104) is located at 40-60% of the total length from the first material inlet (102) to the material outlet (103). The reaction device and method of the invention can improve the conversion rate of the reaction and control the morphology of the light hydrocarbon alternating copolymerization microspheres.

Description

technical field [0001] The invention relates to the field of polymerization reaction, in particular to a reaction device for preparing light hydrocarbon alternating copolymerization microspheres and a method for preparing light hydrocarbon alternating copolymerization microspheres. Background technique [0002] The production of polymers generally includes units such as raw material treatment, catalyst unit, polymerization, separation, and recycling. Among these many units, the polymerization unit is the core and important unit. The polymerization unit directly determines the operation of the polymerization reaction and the resulting polymerization. the quality of the product. [0003] Different from the reaction of small molecules, the polymerization reaction has its own particularity, such as the increase of viscosity during the reaction process, and the reaction process is accompanied by relatively strong exotherm. Generally, the polymerization reactor should meet the fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06C08F210/08C08F236/06C08F238/04C08F210/10C08F2/01
CPCC08F222/06C08F210/08C08F236/06C08F238/04
Inventor 刘振杰宋文波张洁邹发生
Owner CHINA PETROLEUM & CHEM CORP
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