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Preparation method of jet fuel

A jet fuel and hydrogen technology, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, can solve the problems of low jet fuel yield, formation, and influence on jet fuel color, and achieve stable properties and improved yield. Effect

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 this 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
Comparison scheme
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), hydrogen and hydrodeoxygenation catalyst RN-10 contact, hydrodeoxygenation conditions include: pressure is 5.0MPa , the temperature is 320°C, and the volumetric space velocity is 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 and the 90% by weight heavy fraction obtained in step (3), H 2 Contact with the hydroisomerization catalyst A, wherein the hydroisomerization conditions include: pressure 5.0MPa, temperature 320°C, volume space velocity 2.0h -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 catalyst RLF-10W, hydro...

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Abstract

The invention provides a preparation method of jet fuel. The method comprises the following steps: (1) mixing a heavy fraction with boiling point higher than 260 DEG C with C8-C24 n-alkanes to obtain a mixture; contacting the mixture and hydrogen with a hydrogenation isomerization catalyst under hydroisomerization conditions to obtain isomerization products; and (2) under conditions of hydrofining, contacting the isomerization products, hydrogen with a hydrofining catalyst, and fractioning to obtain jet fuel and the heavy fraction with boiling point higher than 260 DEG C. The method provided by the invention not only effectively improves the yield of jet fuel in the preparation process, but also effectively utilizes the heavy fraction obtained in a traditional preparation method of jet fuel. 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 technique [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 acid meth...

Claims

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Application Information

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