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Device and method for preparing poly-alpha-olefin

An olefin and pressure control technology, applied in chemical instruments and methods, hydrocarbon cracking, chemical/physical/physicochemical processes, etc., can solve the problem of large volume of stirred reactor, inability to achieve conversion rate and selectivity, and poor performance deal with problems such as catalysts

Active Publication Date: 2021-10-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] But whether using BF 3 The adsorption method complexed with the adsorbent, the extraction method using the principle of similar miscibility, the electrosedimentation method by applying an electric field, or the thermal cracking method all have more or less problems, such as poor separation efficiency and destruction Unfavorable factors such as the structure of the catalyst and the large influence of side reactions limit its application in industrial scale-up production
[0014] The stirred tank reaction process reported in the prior art has the disadvantages of a large volume of the stirred tank, a lot of land occupation, very strict requirements on the control of the process parameters, complicated process operation, long reaction time and production cycle, etc. The continuous tank Although the formula preparation process can ensure batch stability, it cannot achieve ideal conversion and selectivity, and neither process can handle the catalyst in the product well.

Method used

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  • Device and method for preparing poly-alpha-olefin
  • Device and method for preparing poly-alpha-olefin
  • Device and method for preparing poly-alpha-olefin

Examples

Experimental program
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preparation example Construction

[0131] figure 1 It is a schematic diagram of the device for preparing polyalphaolefins of the present invention, which includes a mixing unit 1, a microchannel reaction unit 2, a high-pressure separation unit 3, a low-pressure separation unit 4, a gas circulation unit 5, a post-processing unit 6 and a pressure control unit 7 , the mixing unit 1 is connected to the microchannel reaction unit 2, the high pressure separation unit 3, the low pressure separation unit 4, and the gas circulation unit 5 successively, and the BF is set on the microchannel reaction unit 2 3 The gas inlet 01, the auxiliary agent inlet 02 and the olefin raw material inlet 03 are set on the mixing unit 1, and the gas circulation unit 5 and the BF 3 The gas inlet 01 is connected, the low-pressure separation unit 4 is connected to the post-processing unit 6 , the high-pressure separation unit 3 is connected to the pressure control unit 7 and the gas circulation unit 5 in sequence.

[0132] figure 2 is a s...

Embodiment 1

[0169] use attached figure 1 The apparatus shown carries out the polymerization of olefin feedstock. In the device, the mixing unit 1 is a mixer, the microchannel reaction unit 2 is a microchannel reactor, the high-pressure separation unit 3 is a high-pressure separator, the low-pressure separation unit 4 is a low-pressure separator, and the gas circulation unit 5 is a compressor. The post-processing unit 6 is a water washing device, and the pressure control unit 7 is a back pressure valve.

[0170] In the device, the structure and parameters of the mixer are: allowable process fluid temperature range: 20-200°C, working pressure upper limit (25°C): 10MPa; the structure and parameters of the microchannel reactor are: 8 channels, process fluid Temperature range: -20~200℃, maximum allowable reaction pressure: 6MPa, maximum allowable heat transfer medium pressure: 2MPa, including two temperature probes for measuring the temperature in the reaction system, fluid channel volume (wh...

Embodiment 2

[0181] Polymerization of the olefin feedstock was carried out using an apparatus for preparing polyalphaolefins as shown in Example 1. In the device, the structure and parameters of the mixer are: allowable process fluid temperature range: 20-200°C, working pressure upper limit (25°C): 10MPa; the structure and parameters of the microchannel reactor are: 8 channels, process fluid Temperature range: -20~200℃, maximum allowable reaction pressure: 6MPa, maximum allowable heat transfer medium pressure: 2MPa, including two temperature probes for measuring the temperature in the reaction system, fluid channel volume (when there is no mixing disk) : 50mL, the reaction volume is 30mL when packing the mixing piece, and the volume flow rate is 3–30L / h; the volume of the high-pressure separator is 1L, and the diameter is 10cm; the volume of the low-pressure separator is 15L, and the diameter is 50cm; the working parameters of the compressor are , Suction pressure: -0.1~0.03MPa, exhaust pr...

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Abstract

The invention provides a device and a method for preparing poly-alpha-olefin. The device comprises a mixing unit, a micro-channel reaction unit, a high-pressure separation unit, a low-pressure separation unit, a gas circulation unit, a post-treatment unit and a pressure control unit, the mixing unit is sequentially connected with the micro-channel reaction unit, the high-pressure separation unit, the low-pressure separation unit and the gas circulation unit; the micro-channel reaction unit is provided with a BF3 gas inlet, the mixing unit is provided with an auxiliary inlet and an olefin raw material inlet, the gas circulation unit is connected with the BF3 gas inlet, the low-pressure separation unit is connected with the post-treatment unit, and the high-pressure separation unit is sequentially connected with the pressure control unit and the gas circulation unit. The device and the method are high in polymerization reaction speed, high in reaction conversion rate, good in product selectivity and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a device and method for preparing polyalpha-olefin, in particular to a device and method for continuously preparing polyalpha-olefin. Background technique [0002] Poly α-olefins are usually polymerized by one or more linear α-olefins through oligomerization under the action of a catalyst. Hydrogenated polyalphaolefins obtained after separation and hydrogenation of polyalphaolefins can be used to prepare high-quality synthetic base oils. Poly-α-olefin synthetic base oil, also known as PAO synthetic base oil, has excellent properties such as high viscosity index, ultra-low pour point, excellent thermal and oxidation stability, and high flash point, so it has a wide range of uses. PAO synthetic base oils are graded according to the kinematic viscosity at 100°C. The mainstream products include PAO4, PAO6, PAO8, PAO10, PAO40, PAO100, etc. Among them, the low-viscosity PAO with a kinematic viscosity at 100°C of 4 to 8cSt is the mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C10M107/10C10N30/02
CPCB01J19/0093C10M107/10C10M2205/0285B01J2219/00076B01J2219/00065B01J2219/00058C07C2/20C07C2527/1213C08F10/14C08F110/14C08F210/14B01J8/065B01J8/067B01J2208/00938B01J2208/0053B01J2208/00849B01J2219/00889B01J2219/00159B01J2219/00085B01J2208/00212C07C11/02C08F4/14C08F2/01C07C4/06C08F4/65C07C2/06
Inventor 苏朔成欣徐冰段庆华么佳耀黄作鑫唐晓津黄涛韩颖
Owner CHINA PETROLEUM & CHEM CORP
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