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Preparation method of jet fuel

A technology of jet fuel and hydrogen, which is applied in the field of preparation of jet fuel, can solve the problems of low yield of jet fuel, affecting the color of jet fuel, etc., and achieve the effect of stable properties

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of jet fuel in this method is still low, and the method also has problems such as generating some olefins in the process of cracking and isomerization, which affects the color of jet fuel

Method used

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  • Preparation method of jet fuel

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0044] Prepare the hydroisomerization catalyst according to the method for preparing the catalyst in Example 6 of CN1382526A: Weigh the catalyst C1 prepared in Example 1 in 40g of CN1382526A and 22g of solid alumina sol (the alumina content is 60% by weight, Zhejiang Province Alunite Comprehensive Produced by the research institute) mixed and extruded into a trilobal bar with a circumscribed circle diameter of 1.8 mm, dried at 120° C., calcined at 550° C. for 4 hours, and then filled with Pt (NH 3 ) 4 Cl 2 ·H 2 O aqueous solution 53.2g impregnation, 120 DEG C of oven dry, at 450 DEG C, flow is the hydrogen reduction of 800 milliliters / minute 4 hours, obtains catalyst A (containing crystallinity in A is the SAPO-11 molecular sieve 75% by weight of 77%, with element The platinum content is 0.3% by weight, and the rest is alumina).

preparation Embodiment 2

[0046] Prepare catalyst according to the method for embodiment 6 among CN1382526A, just replace the reference agent C1 prepared by embodiment 1 among CN1382526A with the reference agent B1 prepared in CN1382526A comparative example 1 to obtain catalyst B (containing crystallinity in B is 67% SAPO -11 molecular sieve 75% by weight, elemental platinum content 0.3% by weight, the balance is alumina).

Embodiment 1

[0048] (1) Under hydrodeoxygenation conditions, palm oil (sulfurizing agent dimethyl disulfide content is 0.02% by weight), H 2 Contact with hydrodeoxygenation catalyst RN-10, hydrodeoxygenation conditions include: pressure 5.0MPa, temperature 320°C, volume space velocity 1.0h -1 , the volume ratio of hydrogen to oil is 1000:1 (Nm 3 / m 3 );

[0049] (2) Under hydroisomerization conditions, the C13-C20 normal paraffins obtained after dehydration of the product after the aforementioned hydrodeoxygenation, H 2 Contact with hydroisomerization catalyst A, the hydroisomerization conditions include: pressure 5.0MPa, temperature 330°C, volume space velocity 1.0h -1 , the volume ratio of hydrogen to oil is 500:1 (Nm 3 / m 3 ).

[0050] (3) Under hydrorefining conditions, the product after the aforementioned hydroisomerization, H 2 Contact with hydrofinishing RLF-10W, hydrofinishing conditions include: temperature 150°C, pressure 5.0MPa, volumetric space velocity 2.0h -1 , the vo...

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Abstract

The invention provides a preparation method of jet fuel. The method comprises the following steps: (1) contacting vegetable oil, and / or animal fat and hydrogen with a hydrodeoxygenation catalyst under the hydrodeoxygenation conditions to obtain C8-C24 n-alkanes; (2) contacting the C8-C24 n-alkanes and hydrogen with a hydroisomerization catalyst under hydroisomerization conditions; and (3) under hydrofining conditions, contacting the contact products from the step (2) and hydrogen with a hydrofining catalyst, and fractioning to obtain the jet fuel. The hydroisomerization catalyst comprises a carrier and an active metal component; the carrier contains a silicon aluminophosphate molecular sieve; and the metal active component contains one or more from VIII metal elements. The jet fuel prepared by the method provided by the invention is almost entirely comprised of saturated alkanes, has stable quality, and can meet the requirements as a No. 3 jet fuel.

Description

technical field [0001] The present invention relates to a method of producing jet fuel. Background of the invention [0002] With the tightening of traditional fossil energy supply and increasing pressure to reduce carbon dioxide emissions, the development of renewable and clean alternative energy has become a global consensus. Due to its renewable and green nature, bioenergy has received special attention in recent years and is considered to be one of the most ideal ways to solve the global energy crisis. [0003] As the demand for jet fuel continues to increase, the technology to prepare jet fuel from renewable raw materials is gaining more and more attention. These renewable raw materials include, but are not limited to, vegetable oils (soybean oil, rapeseed oil, palm oil, jatropha oil, tallow oil), animal fats (lard, tallow, fish oil), acidified oils, various Fatty acids and acidified oils etc. [0004] At present, there are many studies on the preparation of fatty ac...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10G65/04
CPCY02P30/20
Inventor 渠红亮周金良张占柱夏国富孟祥堃
Owner CHINA PETROLEUM & CHEM CORP
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