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Additive with high heat stability for jet fuels

A jet fuel and stability technology, applied in fuel, liquid carbon-containing fuel, petroleum industry, etc., can solve problems such as hindering the normal flow of fluid, fuel temperature limitation, engine nozzle deformation, etc., to achieve the suppression of deposit formation, stable and reliable performance , the effect of prolonging the service life

Active Publication Date: 2012-06-20
PLA AIR FORCE OIL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As deposits are deposited on the metal surface, it increases the thermal resistance between the tube wall and the fluid, reducing the heat transfer efficiency
At the same time, the accumulated deposits may deform and block small-diameter pipes and engine nozzles, thereby hindering the normal flow of fluid and affecting the normal operation of fuel heat exchangers, filters and valves.
Therefore, the use of fuels generally has temperature limitations

Method used

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  • Additive with high heat stability for jet fuels
  • Additive with high heat stability for jet fuels
  • Additive with high heat stability for jet fuels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0028] Embodiments 1-5: Preparation of Jet Fuel High Thermal Stability Additive

[0029] Weigh 6-tert-butyl-2,4-dimethylphenol, N,N'-disalicyyl-1,2-propylenediamine, polyisobutylene thiophosphate pentaerythritol ester (molecular weight 1000 ~3000), polyisobutylene phosphate pentaerythritol ester (molecular weight 1000~2000), diethylbenzene, put them into a stainless steel kettle, and stir at a speed of 100rpm for 3 hours at room temperature to obtain a jet fuel high thermal stability additive. Before mixing, the various components should be dissolved and then mixed, and the stirring should be strengthened to prevent some components from depositing at the bottom and affecting performance.

[0030] Table 1: Formula table of embodiments 1 to 5:

[0031]

Embodiment 6～10

[0032] Embodiments 6-10: Preparation of Jet Fuel High Thermal Stability Additive

[0033] Weigh respectively 6-tert-butyl-2,4-dimethylphenol, N,N'-disalicylic-1,2-propylenediamine, polyisobutylene thiophosphate pentaerythritol (molecular weight 1000 ~3000), polyisobutylene phosphate pentaerythritol ester (molecular weight 1000~2000), diethylbenzene, put them into a stainless steel kettle, and stir at a speed of 100rpm for 3 hours at room temperature to obtain a jet fuel high thermal stability additive. Before mixing, the various components should be dissolved and then mixed, and the stirring should be strengthened to prevent some components from depositing at the bottom and affecting performance.

[0034] Table 2: Formula table of embodiments 6-10:

[0035]

[0036] Experimental example 1 The detection of high heat adding stabilizer to the jet fuel prepared in Examples 1-10

[0037] Jet fuel thermal oxidation stability test method (JFTOT method) refer to the national stan...

experiment example 2

[0045] HiReTS testing machine is a new generation of thermal oxidation stability testing machine developed by Shell Global Solutions and Fuels Business Group, which is specially used to evaluate the thermal stability of fuel before delivering fuel to consumers. Since the HiReTS test machine is designed for quantitative analysis, and the working state is the same as the high Reynolds number state of the actual fuel nozzle (Reynolds number is about 13000), it is generally considered that it is different from JFTOT (and other laminar flow test equipment, Reynolds number About 10) can get more associated data than .

[0046] HiReTS standard test method, in line with ASTM D6811-02 standard, officially released in July 2002. This method is used to determine the dynamic thermal oxidation stability of aviation turbine fuel in turbulent flow state, which is different from JFTOT for the determination of fuel stability in laminar flow state. This method simulates the actual turbulent wo...

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Abstract

The invention relates to the field of jet fuels, in particular to an additive with high heat stability for the jet fuels. The additive comprises the following materials by weight: 5 to 30 percent of anti-oxidant, 0.1 to 10 percent of metal passivator, 10 to 60 percent of detergent dispersant, and 30 to 85 percent of solvent, wherein the detergent dispersant is the mixture of polyisobutene-thiophosphoric acid-pentaerythritol ester and polyisobutene-phosphoric acid-pentaerythritol ester. Through the adoption of the additive, the thermal oxidation stability of the conventional Chinese No. 3 jet fuel can be improved by at least 55 DEG C; being added with the additive provided by the invention, a jet fuel has a favorable compatibility for metal materials and rubber of a fuel system; and the functions of inhibiting the formation of deposition and cleaning deposition on the inner wall of a pipe are realized.

Description

technical field [0001] The invention relates to the field of jet fuel, in particular to a jet fuel high thermal stability additive. Background technique [0002] With the continuous development of aircraft and engine technology, the operating temperature of jet fuel is getting higher and higher, so the requirements for thermal stability of fuel are also getting higher and higher. The currently used jet fuel will undergo a series of chemical changes such as thermal decomposition, degradation, or deposition at relatively high operating temperatures. In addition, insoluble deposits will be generated when it directly contacts the hot metal surface of the aircraft, which will affect the performance of the heat exchanger. , Blocking the nozzles, pipelines, filters, injection pumps and other components of the aircraft fuel system will bring great hidden dangers to flight safety. [0003] Jet fuel not only serves as the power source for the aircraft to move forward, but also plays ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/26C10L1/183C10L1/222C10L1/16C10L1/10
Inventor 张怀安刘婕王树雷张庆森曹文杰朱志谦李辉薛艳张冬梅贺泽臣
Owner PLA AIR FORCE OIL MATERIAL RES INST
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