Method of catalytically synthesizing liquid jet fuel from cyclopentadiene and bridge dicyclopentadiene

A technology of dicyclopentadiene and cyclopentadiene, which is applied in the field of jet fuel preparation, can solve the problems of serious environmental pollution of heterogeneous catalysts and high freezing point of liquid fuels, and achieve the effects of convenient and easy-to-obtain sources, low freezing point and high density

Active Publication Date: 2007-10-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of the above method are: the freezing point of the liquid fuel is high, the yield is not more than 30%, and the heterogeneous catalyst causes serious environmental pollution

Method used

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  • Method of catalytically synthesizing liquid jet fuel from cyclopentadiene and bridge dicyclopentadiene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 300g of cyclopentadiene, 300g of bridged dicyclopentadiene and 150g of HZSM-5 molecular sieves with a particle size of 0.12 to 0.15mm into a reaction kettle with a volume of 1000mL. The stirring rate is 850rpm. Polymerization at 190°C for 20 hours to obtain the product;

[0013] The product was filtered under reduced pressure, and the filtrate was added to the still, and the unreacted raw materials were evaporated and recovered under the conditions of a pressure of 5kPa and a temperature of 130°C, and 451g of polymer was obtained from the bottom of the still;

[0014] The above 451g polymer and 25g Pd / Al 2 o 3 The hydrogenation catalyst is put into a reaction kettle with a volume of 1000mL, wherein the mass percentage of palladium in the hydrogenation catalyst is 1.0%, the stirring rate is 750rpm, and the hydrogenation pressure is 2.5MPa, and the temperature is 160°C for 15 hours. Filter at 25°C to obtain 443g of liquid jet fuel.

[0015] The synthesized liquid j...

Embodiment 2

[0017] Add 600g of bridged dicyclopentadiene and 60g of HY molecular sieve with a particle size of 0.15 to 0.16mm into a reaction kettle with a volume of 1000mL, stir at 750rpm, and polymerize for 30 hours at a pressure of 3MPa and a temperature of 160°C get the product;

[0018] The product was filtered under reduced pressure, and the filtrate was added to the still, and the unreacted raw materials were evaporated and recovered under the conditions of a pressure of 10kPa and a temperature of 160°C, and 425g of polymer was obtained from the bottom of the still;

[0019] The above 425g polymer product and 66g Pd / Al 2 o 3 Hydrogenation catalyst is put into the reactor that volume is 1000mL, wherein the mass percent of palladium in hydrogenation catalyst is 0.3%, and stirring rate is 850rpm, and hydrogen pressure is that 5MPa, temperature are reacted 20 hours under the condition of 170 ℃, be cooled to 416g of liquid jet fuel was obtained by filtration at 30°C.

Embodiment 3

[0021] Add 150g of cyclopentadiene, 450g of bridged dicyclopentadiene, and 180g of mordenite molecular sieves with a particle size of 0.096-0.106mm into a reaction kettle with a volume of 1000mL. The stirring rate is 900rpm. Under the condition of ℃, the polymerization reaction was carried out for 15 hours to obtain the product;

[0022] The product was filtered under reduced pressure, and the filtrate was added to the still, and the unreacted raw materials were evaporated and recovered under the conditions of a pressure of 8kPa and a temperature of 150°C, and 417g of polymer was obtained from the bottom of the still;

[0023] The above-mentioned 417g polymer and 12g palladium-carbon hydrogenation catalyst are put into a reaction kettle with a volume of 1000mL, wherein the mass percentage of palladium in the hydrogenation catalyst is 5%, the stirring rate is 750rpm, and the hydrogenation pressure is 0.5MPa and the temperature is 180 Under the condition of ℃, react for 10 hours...

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Abstract

The invention discloses a catalyzing and synthesizing liquid injecting fuel method with cyclopentadiene and bridge dicyclopentadiene relating to an injecting fuel preparing technique, which comprises the following steps: regarding the mixture of cyclopentadiene and bridge dicyclopentadiene as the material; adding ZSM, Y, mordenite or beta molecular sieve accelerant; proceeding the polymerization reaction at 160Deg. C -250Deg. C, 0. 1MPa -3MPa; distilling at 130Deg. C -160Deg. C in order to remove no reaction materials; adding Pd/gamma-Al2O3, Pd/SiO2 or palladium carbon hydrogenation accelerant to the polymer; getting the liquid injecting fuel with at hydrogenation the hydrogen gas pressure of 0. 5-5MPa, 140-80Deg. C. The invention provides a big density, a low freezing point, which provides a simple technique.

Description

technical field [0001] The invention relates to a method for catalytically synthesizing liquid jet fuel from cyclopentadiene and bridged dicyclopentadiene, which belongs to the preparation technology of jet fuel. Background technique [0002] Liquid jet fuel is the guarantee for powering aircraft such as supersonic fighter jets, strategic and tactical missiles, and rockets. High-performance liquid jet fuel has greater density and volumetric energy than conventional aviation kerosene, which can provide more propulsion energy for aircraft, significantly Increase the speed, payload and range of your aircraft. U.S. Patents 3,701,812, 4,086,286 and 4,401,837 disclose a liquid jet fuel with a density of 1.037 g / cm 3 , with a freezing point below -40°C, it can be used directly as jet fuel or as a high-energy additive for other fuels. The synthesis method is as follows: bridged dicyclopentadiene is dissolved in benzene solution, at a temperature of 260-300°C and a pressure of 470-5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/00C10L1/00
Inventor 邹吉军张香文蒋强苗谦王莅米镇涛
Owner TIANJIN UNIV
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