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Method for production of diesel oil fraction and aviation fuel fraction by use of animal and plant oils and fats

A technology for animal and vegetable oils and aviation fuels, which is applied in the fields of biofuels, air transportation, biological raw materials, etc., can solve the technical and economic performance of the catalytic hydrogenation of oils and fats needs to be improved, the cost of raw materials and hydrogen production is high, and by-products are difficult to efficiently utilize, etc. problems, to achieve the effect of improving the overall technical and economic performance, reducing operating costs, and avoiding poisoning.

Active Publication Date: 2014-07-02
PETROCHINA CO LTD
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  • Claims
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Problems solved by technology

On the other hand, the overall technical and economic performance of catalytic hydrogenation of oil still needs to be improved
This is because, compared with catalytic hydrogenation of fossil raw materials, the raw material cost and hydrogen production cost of catalytic hydrogenation of oil are higher, the by-products are difficult to be efficiently utilized, and trace impurities in oil may have adverse effects on the performance and life of hydrogenation catalysts, etc.

Method used

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  • Method for production of diesel oil fraction and aviation fuel fraction by use of animal and plant oils and fats
  • Method for production of diesel oil fraction and aviation fuel fraction by use of animal and plant oils and fats

Examples

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Effect test

Embodiment 1

[0032] use figure 1 In the shown process flow, jatropha oil is used as raw material, and aviation fuel distillate is used as the main target product. Firstly, refining treatment was carried out, the dosage of conversion-complexing agent was 1.2%, the reaction time was 60 minutes, the dosage of adsorbent was 1%, and the reaction time was 30 minutes. The impurity content before and after refining treatment is shown in Table 1. Hydrogenation and deoxidation are performed simultaneously in a fixed-bed reactor using sulfided NiMo / γ-Al 2 o 3 Supported catalyst, reaction temperature 380°C, reaction pressure 5.0MPa, volume space velocity 1.0h -1 , The volume ratio of hydrogen to oil is 500:1. The analysis of the stream before and after the reaction shows that the deoxygenation rate reaches 100%, the yield of liquid phase products reaches 81.3%, and the content of saturated linear alkanes reaches 96.5%. Isomerization and cracking are simultaneously completed in a fixed-bed reactor, ...

Embodiment 2

[0034] use figure 1 In the process flow shown, jatropha oil and gutter oil are mixed at a volume ratio of 1:1 as raw material, and aviation fuel distillate is used as the main target product. Firstly, refining treatment was carried out, the dosage of conversion-complexing agent was 1.5%, the reaction time was 60 minutes, the dosage of adsorbent was 2%, and the reaction time was 30 minutes. The impurity content before and after refining treatment is shown in Table 1. Subsequent steps and process conditions were the same as in Example 1, and the composition and concentration of reactants and products in each section were analyzed. After calculation, the aviation fuel fraction yield of the whole process system is 51.5%, and the isomerization rate is 87.1%. The actual measurement results show that the freezing point of aviation fuel is -51°C and the flash point is 43°C, and all indicators meet the requirements of the "No. 3 Jet Fuel" (GB6537-2006) standard.

Embodiment 3

[0036] use figure 1 In the shown process, the millennium tung oil is used as the raw material, and the aviation fuel distillate is used as the main target product. Firstly, refining treatment was carried out, the dosage of conversion-complexing agent was 1.5%, the reaction time was 60 minutes, the dosage of adsorbent was 2%, and the reaction time was 30 minutes. The impurity content before and after refining treatment is shown in Table 1. Except for hydrogenation and deoxidation treatment, subsequent steps and process conditions are the same as in Example 1. Hydrogenation and deoxygenation are completed step by step in two fixed-bed reactors connected in series. The former uses nickel-based catalysts, 200°C, 0.3MPa reaction conditions, and the latter uses NiMo / γ-Al 2 o 3 Supported catalyst, 380°C, 5.0MPa reaction conditions. After calculation, the aviation fuel fraction yield of the whole process system is 51.9%, and the isomerization rate is 86.5%. The actual measurement ...

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Abstract

The invention relates to a method for production of a diesel oil fraction and an aviation fuel fraction by use of animal and plant oils and fats, and the method comprises the following steps: a) performing refining processing on the animal and plant oils and fats; b) performing catalytic hydrogenation and deoxidation to obtain saturated linear alkanes and propane; c) performing hydroisomerization and hydrocracking processing to obtain an alkane material flow with higher branched chain degree; d) separating to obtain liquid hydrocarbons and gaseous hydrocarbons with the boiling point within the boiling point range of diesel oil, aviation fuels and naphtha; e) directly collecting the diesel oil fraction as a product, or cycling in whole or in part to continue isomerization and cracking reaction to increase production of the aviation fuel fraction; and f) mixing propane gaseous hydrocarbon and naphtha for steam reforming hydrogen production reaction, separating and purifying the obtained hydrogen to enter into a circulating hydrogen system; the method is used in the production of the renewable diesel oil and aviation fuels with excellent combustion performance and cold flow performance, and meanwhile efficient utilization of by-products and in-system supplement of hydrogen consumption can be realized.

Description

technical field [0001] The invention relates to a method for producing diesel fractions and aviation fuel fractions from animal and vegetable oils, in particular to the field of catalytic hydrogenation of oils and fats. Background technique [0002] With the development of the world economy and the increasing consumption of petroleum resources, energy shortage has become a major problem affecting the sustainable development of human society. As the world's oil exports are currently concentrated in a few countries, coupled with geopolitical factors, how to ensure long-term and stable oil supply is a major issue related to national security. As an important countermeasure, since the oil crisis in the 1970s, major countries in the world have actively developed and applied new energy sources such as solar energy, wind energy, nuclear energy, tidal energy, and biomass energy, with remarkable achievements. Among them, due to the characteristics of renewable, low pollution, wide d...

Claims

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Application Information

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IPC IPC(8): C10G3/00C11B3/00C11B3/02C11B3/10
CPCY02E50/13Y02E50/10Y02P30/20Y02T50/678
Inventor 邓旭亮李建忠何玉莲王桂芝褚洪岭贾云刚何昌洪王东军赵光辉董平崔锡红佟华芳赵晶莹荣丽丽王薇
Owner PETROCHINA CO LTD
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