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Method for producing aviation fuel from fatty alcohols

A technology for aviation fuel and fatty alcohol, which is applied in the preparation of biological raw materials, liquid hydrocarbon mixtures, and petroleum industry, etc., can solve the problem of high price of high-quality fatty alcohol, and achieve the effects of high product yield, good economy, and environmentally friendly and clean process.

Active Publication Date: 2016-03-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of high-quality fatty alcohols, there are fewer reports on the preparation of fuels from fatty alcohols

Method used

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  • Method for producing aviation fuel from fatty alcohols
  • Method for producing aviation fuel from fatty alcohols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Use n-decyl alcohol (n-C 10 h 21 OH) as raw material for processing.

[0023] (1), using Al-MCF as step (1) catalytic dehydration catalyst, the loading amount of catalyst is 500g. The reaction pressure is 0.1MPa, the reaction temperature is 350°C, and the volume space velocity is 1h -1 .

[0024] The water in the product is separated, and the oil product is used as a raw material for step (2) hydroisomerization.

[0025] (2) Use Pt / ZSM-22 as the hydroisomerization catalyst in step (2), the loading amount of the catalyst is 500g, and the mass ratio of Pt to ZSM-22 is 0.005:1. The reaction pressure is 4.0MPa, the reaction temperature is 300°C, and the volume ratio of hydrogen to normal olefins is 200:1Nm 3 / m 3 , the volumetric space velocity is 0.1h -1 .

[0026] The product was collected, weighed and analyzed for product properties, the results are shown in Table 1.

Embodiment 2

[0028] Use n-decyl alcohol (n-C 10 h 21 OH) as raw material for processing.

[0029] (1), use ZSM-5 as step (1) catalytic dehydration catalyst, and the loading amount of catalyst is 500g. The reaction pressure is 0.1MPa, the reaction temperature is 250°C, and the volume space velocity is 1h -1 .

[0030] The water in the product is separated, and the oil product is used as a raw material for step (2) hydroisomerization.

[0031] (2) Use Pt / ZSM-22 as the hydroisomerization catalyst in step (2), the loading amount of the catalyst is 500g, and the mass ratio of Pt to ZSM-22 is 0.005:1. The reaction pressure is 4.0MPa, the reaction temperature is 300°C, and the volume ratio of hydrogen to normal olefins is 200:1Nm 3 / m 3 , the volumetric space velocity is 0.1h -1 .

[0032] The reaction formula of embodiment 1 and 2 comprises as follows:

[0033]

Embodiment 3

[0035] Use C8-C16 mixed fatty alcohols as raw materials.

[0036] The catalytic dehydration and hydroisomerization conditions are the same as in Example 1.

[0037] The properties of the obtained products are shown in Table 1.

[0038] Table 1

[0039]

[0040] *Based on the amount of n-decyl alcohol; **Isomerization rate=Isoparaffin mass / alkane mass*100%.

[0041] As can be seen from the results in Table 1, the jet fuel prepared by the method of the present invention with n-decyl alcohol as raw material can meet the requirements of No. 3 jet fuel except density, and can be used as the high-quality blending component of No. 3 jet fuel. The jet fuel prepared by using the mixed fatty alcohol of C8-C16 as a raw material by the method of the present invention meets the requirement of the No. 3 jet fuel, and can be directly used as the No. 3 jet fuel or as a high-quality blending component.

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Abstract

The invention relates to a method for producing an aviation fuel from fatty alcohols, and belongs to the technical field of aviation fuels. The method comprises the following steps: 1, converting the fatty alcohols into C8-C16 n-alkenes under catalytic dehydration conditions; and 2, preparing C8-C16 isoalkanes from the n-alkenes obtained in step 1 under hydrogenation isomerization conditions. The C8-C16 isoalkanes obtained through the method can be mixed with traditional petroleum base aviation fuels according to arbitrary proportions. The method has the advantages of renewable raw material, high yield and high quality of the above product, and environmentally friendly and clean process.

Description

technical field [0001] The invention relates to a method for producing aviation fuel, in particular to a method for producing bio-aviation fuel using fatty alcohol as a raw material, and belongs to the technical field of aviation fuel. Background technique [0002] Bio-aviation fuel is a renewable biomass resource. Compared with petroleum-based aviation fuel, its molecular structure is similar. At the same time, it has the advantages of low sulfur content, high lightning, and low freezing point. Therefore, bio-aviation fuel preparation technology has attracted the attention of scientific research and industry. The bio-jet fuel preparation routes that have been developed so far include: natural oil hydrodeoxygenation-hydrocracking / isomerization method, biomass gasification-Fischer-Tropsch synthesis-hydrogenation upgrading method, etc., and there have been industrial demonstration reports . [0003] Fatty alcohols are aliphatic alcohols with a chain of 8 to 22 carbon atoms. ...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 谭天伟贺明丽王萌居超
Owner BEIJING UNIV OF CHEM TECH
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