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Preparation method of aromatic hydrocarbons and low-carbon olefins through co-processing animal and plant oils and oxygenated chemical

A technology of animal and vegetable oils and low-carbon olefins, which is applied in the direction of hydrocarbons, chemical instruments and methods, and the preparation of liquid hydrocarbon mixtures. It can solve problems such as high viscosity, strong corrosion, and large waste liquid discharge, and achieve simplified The effect of equipment flow, less water intake and energy consumption reduction

Active Publication Date: 2011-10-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of biodiesel are high viscosity, strong corrosion, and large amount of waste liquid discharge during the production process.

Method used

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  • Preparation method of aromatic hydrocarbons and low-carbon olefins through co-processing animal and plant oils and oxygenated chemical
  • Preparation method of aromatic hydrocarbons and low-carbon olefins through co-processing animal and plant oils and oxygenated chemical
  • Preparation method of aromatic hydrocarbons and low-carbon olefins through co-processing animal and plant oils and oxygenated chemical

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 illustrates the situation of using a fixed fluidized bed reactor to co-refine tallow and ethanol to produce light olefins and aromatics.

[0039] The fluidized bed reactor is operated intermittently. The raw material of tallow, ethanol and atomized steam is heated to about 200°C by the preheating furnace, and then enters the bottom of the fluidized bed reactor through the feed nozzle, and contacts with the hot catalyst for catalytic conversion reaction. . After the generated reaction oil gas is separated from the catalyst, the reaction oil gas is subjected to fractional distillation to obtain gas products and liquid products. The separated spent catalyst is stripped to remove hydrocarbon products adsorbed on the spent catalyst. After the stripping, the raw catalyst is introduced into the catalyst regenerator and fed with oxygen-containing gas for coke regeneration, and the next reaction can be carried out after the catalyst is regenerated. The main operat...

Embodiment 2

[0041] Example 2 illustrates the use of a riser reactor to co-catalyze the conversion of vegetable oil and oxygenated compounds to produce light olefins and aromatics.

[0042] The medium-sized riser device that adopts continuous reaction-regeneration operation is tested, and the inner diameter of described riser reactor is 16 millimeters, and height is 6 meters, and there is one section of fluidized bed reaction section above the outlet of riser reactor, and the inner diameter of this reaction section It is 64mm and the height is 0.3m.

[0043] The operation mode of one-way pass is adopted, the oxygenated compound methanol and dimethyl ether, and the regenerated catalyst with a temperature of about 700 ° C enter the bottom of the riser reactor through the regenerated inclined tube, and flow upward under the action of the pre-lift steam. Soybean oil and castor oil raw materials are heated to about 250°C in a preheating furnace, mixed with atomized steam, and then enter the ris...

Embodiment 3

[0046] Example 3 illustrates the situation in which light olefins and aromatics are produced by co-catalytic conversion of animal and vegetable oils and oxygenates at different positions using the riser + bed reactor mode.

[0047] The oxygen-containing compound is methanol, and the reactor adopts the riser + bed reaction mode. The inner diameter of the riser reactor is 16 mm and the height is 4 meters. The bed reactor is a single-stage fluidized bed reactor, the inner diameter of the single-stage fluidized bed reactor is 64mm, and the height is 2.5m, and the diameter of the catalyst cooler is 70mm, and the height is 3m. The outlet of the riser reactor is located at the bottom of the dense-phase bed of the single-stage fluidized bed reactor, the catalyst inlet of the cooler is located at the upper part of the single-stage fluidized bed reactor, and the cooled catalyst returns to the lower part of the dense-phase fluidized bed. The palm oil raw material is heated to about 250°...

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Abstract

A preparation method of aromatic hydrocarbons and low-carbon olefins through co-processing animal and plant oil and an oxygenated chemical is characterized by: introducing raw materials such as the plant oil and the oxygenated chemical into a catalytic cracking reactor; carrying out a catalytic conversion reaction through contacting with a catalytic cracking catalyst in the reactor with an operating temperature of 500 to 670 DEG C, an operating pressure of 0.1 to 5.0 MPa, a weight hourly space velocity of 0.1 to 100 h<-1> and an agent-oil ratio of 1 to 50; separating a reaction oil gas from the spent catalyst when the reaction is finished; recycling the separated spent catalyst after stripping, burning and regenerating; obtaining fractions such as a liquefied gas, gasoline and the like through fractionating the reaction oil gas and obtaining the low-carbon olefins through a manner that the liquefied gas enters a gas separating system; and obtaining the aromatic hydrocarbon product through carrying out a further aromatic extraction on the gasoline fraction. The method provided by the present invention allows the reaction temperature to be controlled through co-processing the plant oil and the oxygenated chemical, the selectivity of the target product gasoline to be improved, and energy consumption to be reduced. In terms of a reaction apparatus, equipment flow is simplified because heat exchangers which are arranged for removing reaction heat can be reduced.

Description

technical field [0001] The invention relates to a method for preparing gasoline by catalytic conversion of hydrocarbons, more specifically, a method for preparing gasoline by contacting catalytic conversion of animal and vegetable oils and oxygen-containing compounds with a catalyst. Background technique [0002] Aromatics are important petrochemical resources with high added value. Aromatics such as benzene, toluene, and xylene are important organic chemical raw materials, such as: benzene can be used to synthesize styrene, cyclohexane, phenol, aniline, and alkylbenzene; toluene is not only an excellent solvent for organic synthesis, but also can be used as a raw material for synthesis Isocyanates and cresols can also be used to produce benzene through disproportionation and dealkylation, or to increase the octane number of gasoline. Xylene is an excellent solvent for the paint industry, and it is also the main raw material for the production of polyester and polyester res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C07C7/00C07C11/02C07C11/06C07C15/02
CPCY02P20/582Y02P20/584Y02P30/20
Inventor 宋宁宁王骞武雪峰张占柱张同旺许克家朱丙田侯栓弟
Owner CHINA PETROLEUM & CHEM CORP
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