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Method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil

A technology for vegetable oil and catalytic hydrogenation, which is used in the preparation of liquid hydrocarbon mixtures, petroleum industry, biological raw materials, etc., can solve the problems of less catalyst preparation process, harsh reaction conditions, and low calorific value of products, and achieves easy recycling, The effect of less solvent consumption and high combustion calorific value

Inactive Publication Date: 2010-05-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few relevant literatures and patents on the preparation of diesel components by catalytic hydrodeoxygenation of animal and vegetable oils, and the preparation process of the catalyst used is complicated, the reaction conditions are harsh, the carbon chain is broken seriously, the calorific value of the product is low, and aromatics are easily formed during the reaction process. cause carbon deposition

Method used

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  • Method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil
  • Method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil
  • Method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1.5g sunflower oil, 0.5g 2%Pd / BaSO 4 Catalyst and 30mL of n-hexane were added to a 100mL reaction kettle, filled with hydrogen, the initial hydrogen pressure was 3.0MPa, stirring and heating were started, and the reaction was stopped after 7 hours of reaction at 270°C. After cooling to room temperature, the liquid product and the catalyst were automatically separated to obtain a clear Diesel components. Quantitative detection of the product by high-performance liquid chromatography and gas chromatography shows that the conversion rate of the raw material sunflower oil can reach 100%, and the total output of normal alkanes is 1.01g. The product composition is shown in the table below:

[0023]

Embodiment 2

[0025] 1.0g sunflower oil, 0.4g 5%Pd / BaSO 4 Add the catalyst and 15mL of n-octane into a 100mL reactor, fill it with hydrogen, start the stirring and heating at an initial hydrogen pressure of 5.0MPa, and stop the reaction after reacting at 320°C for 5 hours. diesel components. Quantitative detection of the product by high-performance liquid chromatography and gas chromatography shows that the conversion rate of the raw material sunflower oil can reach 98%, and the total output of normal alkanes is 0.63g. The product composition is shown in the table below:

[0026]

Embodiment 3

[0028] 1.5g peanut oil, 0.3g 5%Pd / BaSO 4 Add the catalyst and 25mL of n-heptane into a 100mL reactor, fill it with hydrogen, start the stirring and heating at an initial hydrogen pressure of 6.0MPa, and stop the reaction after reacting at 240°C for 12 hours. After cooling to room temperature, the liquid product and the catalyst are automatically separated to obtain clarification diesel components. Quantitatively detect the product by high performance liquid chromatography and gas chromatography respectively, it can be seen that the conversion rate of the raw material peanut oil can reach 99%, and the total output of normal alkanes is 1.00g. The product composition is shown in the table below:

[0029]

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Abstract

The invention provides a method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil, which prepares high heat-value alkane by catalytic hydrodeoxygenation of the vegetable oil. The method comprises the following reaction steps: adding the vegetable oil, barium sulphate-loaded palladium serving as a catalyst, as well as a solvent selected from n-hexane, n-heptane, n-octane and dodecane to a reactor; supplying hydrogen; allowing reaction pressure to be between 1 and 10 MPa; stirring and heating at 230 to 320 DEG C; performing reaction for 3 to 12 hours and then stopping the reaction; allowing the catalyst and liquid products to automatically separate after the obtained product is cooled to room temperature; and obtaining the diesel components containing high heat-value alkane without centrifugation, filtration and other complicated post treatment. The method has the advantages of simple preparation process, low reaction temperature, low solvent consumption, no cracking of carbon chain parts of the oil, high combustion heat value of target products and recyclable catalyst.

Description

technical field [0001] The invention relates to a method for producing diesel oil components through catalytic hydrodeoxygenation of oil, in particular to a method for preparing diesel oil components through catalytic hydrodeoxygenation of vegetable oils. Background technique [0002] With the increasing shortage of non-renewable energy sources such as coal, oil, and natural gas worldwide and the deterioration of the global climate environment, the development and utilization of clean biomass resources has attracted more and more attention. Long-chain fatty acids and their esters are a class of substances that widely exist in nature. For example, the main components of animal and vegetable oils are glycerides of saturated or unsaturated fatty acids, which are renewable resources. In recent years, the technology of using solid acid and alkali catalysts to catalyze the transesterification of animal and vegetable oils with methanol or ethanol to prepare biodiesel has been widel...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10L1/04
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 楼辉韩军兴李望孙辉丁宇琦段谨钊郑小明
Owner ZHEJIANG UNIV
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