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Method for preparing alpha-olefin from vegetable fat

A technology for vegetable oils and olefins, which is applied in the field of producing alpha-olefins to achieve the effects of being beneficial to generation, improving selectivity and improving yield

Active Publication Date: 2013-09-25
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 preparing alpha-olefin from vegetable fat
  • Method for preparing alpha-olefin from vegetable fat
  • Method for preparing alpha-olefin from vegetable fat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]With a kind of vegetable oil A, its properties are shown in Table 1, and dilution water is separately used as the feed material of the simulated steam thermal cracking performance evaluation test device, and the simulated cracking evaluation test device is composed of a feed system, raw material preheating, cracking reaction system, and quenching system. The product separation system is composed of five parts, and 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 for the process of pyrolysis to produce α-olefins are: vegetable oil preheating temperature 320°C, water preheating temperature controlled at 320°C (shared preheating section), thermal cracking reaction temperature: 560°C, cracking furnace outlet pressure: 0.15Mpa (gauge pressure), reaction residence time: 12.7s, ...

Embodiment 2

[0033] Using the same test device, test method and steps as in Example 1, a vegetable oil A, whose properties are shown in Table 1, and dilution water are separately used as feed materials for the simulated thermal cracking performance evaluation test device, and thermal cracking produces α-olefins The main operating conditions of the process are: vegetable oil preheating temperature 380°C, water preheating temperature controlled at 380°C (shared preheating section), thermal cracking reaction temperature: 600°C, cracking furnace outlet pressure: 0.30Mpa (gauge pressure) , Reaction residence time: 7.6s, the weight ratio of dilution water and vegetable oil is 0.09, and the cracking evaluation test results are shown in Table 2.

Embodiment 3

[0035] Using the same test device, test method and steps as in Example 1, a vegetable oil A, whose properties are shown in Table 1, and dilution water are separately used as feed materials for the simulated thermal cracking performance evaluation test device, and thermal cracking produces α-olefins The main operating conditions of the process are: vegetable oil preheating temperature 450°C, water preheating temperature controlled at 450°C (shared preheating section), thermal cracking reaction temperature: 650°C, cracking furnace outlet pressure: 0.50Mpa (gauge pressure) , Reaction residence time: 2.9s, the weight ratio of dilution water and vegetable oil is 0.15, and the cracking evaluation test results are shown in Table 2.

[0036] The data in table 2 shows: vegetable oil A carries out steam thermal cracking, and under the selected cracking reaction severity condition, all can generate higher proportion mixed α-olefin in embodiment 1, embodiment 2 and embodiment 3, no matter ...

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Abstract

The invention relates to a method for preparing alpha-olefin from vegetable fat. The method comprises the following steps: inputting the vegetable fat and diluted water into a tubular cracking furnace; thermally cracking under a non-catalytic condition; and separating a product after the reacting product is cooled. In the method, the renewable vegetable fat is used for preparing the alpha-olefin, so that the sources of raw materials for preparing the alpha-olefin are widened, and the C6 to C12 alpha-olefin with high value can be conveniently produced.

Description

technical field [0001] The invention relates to a method for producing alpha-olefins from vegetable oils, in particular to a method for producing alpha-olefins from vegetable oils through steam thermal cracking. 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 ton...

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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