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Method for producing alpha-olefin by using vegetable oil and fat

A technology of vegetable oils and olefins, applied in the field of production of α-olefins, to achieve the effects of reducing hydrocarbon partial pressure, reducing coking, and stabilizing supply

Active Publication Date: 2013-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the technology of using vegetable oil directly as a raw material for the production of α-olefins

Method used

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  • Method for producing alpha-olefin by using vegetable oil and fat
  • Method for producing alpha-olefin by using vegetable oil and fat
  • Method for producing alpha-olefin by using vegetable oil and fat

Examples

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specific Embodiment approach

[0026] A preferred embodiment of the present invention is: vegetable oil is used as the raw material of the thermal cracking reaction, heated to 250°C-450°C through the convection section of the tubular cracking furnace, and then enters the radiation section for high-temperature cracking reaction. The reaction conditions are: the cracking furnace outlet temperature is 560-600°C, preferably 580-600°C; the cracking furnace outlet pressure is 0.1Mpa-0.5Mpa; the reaction residence time is 2-30s, preferably 5-20s. After the reaction product is cooled by the quenching boiler and cracking quencher, α-olefins with different carbon numbers are separated in conventional atmospheric and vacuum fractionation towers, and the CO / CO produced by the reaction is separated at the top of the atmospheric fractionation tower. 2 , the unreacted material collected at the bottom of the fractionation tower (which contains unreacted vegetable oil and incompletely reacted intermediate macromolecular subs...

Embodiment 1

[0030] A kind of vegetable oil A, whose properties are shown in Table 1, is used as the feed material of the simulated thermal cracking performance evaluation test device. The simulated cracking evaluation test device consists of five parts: feed system, raw material preheating, cracking reaction system, quenching system and product separation system. Composition, the whole device is controlled and monitored by a computer. The generated pyrolysis products were separated according to the cut point of 200°C and 360°C, and the fraction >360°C was regarded as the unconverted substance. The main operating conditions of the process of producing α-olefins by thermal cracking are: preheating temperature 320°C, thermal cracking reaction temperature 560°C, cracking furnace outlet pressure 0.15Mpa (gauge pressure), reaction residence time 16.7s, cracking evaluation test The results are shown in Table 2.

Embodiment 2

[0032] Using the same test device and test method and steps as in Example 1, with a kind of vegetable oil A, its properties are shown in Table 1, as the feed material of the simulated thermal cracking performance evaluation test device, the main operation of the process of thermal cracking to produce α-olefins The conditions are: the preheating temperature is 380°C, the pyrolysis reaction temperature is 600°C, the outlet pressure of the cracking furnace is 0.30Mpa (gauge pressure), and the reaction residence time is 9.6s. The cracking evaluation test results are shown in Table 2.

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Abstract

The invention relates to a method for producing alpha-olefin by using vegetable oil and fat, which comprises the steps of: feeding vegetable oil and fat into a tubular cracking furnace, carrying out thermal cracking under a non-catalytic condition, and carrying out product separation on reactants after cooling. The alpha-olefin is produced by using the reproduceable vegetable oil and fat, and therefore, the source range of the raw materials for producing the alpha-olefin is enlarged and the high-value alpha-olefin of C6-C12 is more favorably produced.

Description

technical field [0001] The invention relates to a method for producing α-olefins by utilizing vegetable oils, in particular, a method for producing α-olefins by thermal cracking by utilizing vegetable oils. Background technique [0002] Linear α-olefins usually refer to C 4 and C 4 The above linear terminal olefins are an important class of organic chemical raw materials that have developed rapidly in the past 30 years. Since the industrialization of ethylene oligomerization to produce α-olefins in the 1990s, their application fields have continued to expand and are widely used in comonomers. , Synthetic lubricating oil base oils, surfactants, plasticizers, fungicides and emulsifiers and other chemical products. [0003] With the rapid development of the world economy, the α-olefin market is still showing a trend of rapid development, and some new devices are still under construction. The world's α-olefin production capacity will further increase from 3.7 million tons in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 崔德春王子军侯焕娣张书红李子锋
Owner CHINA PETROLEUM & CHEM CORP
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