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Method for measuring coking quantity of hydrocarbon fuel

A measurement method, hydrocarbon fuel technology, applied in the direction of measuring devices, weighing, and weighing equipment for materials with special properties/forms, etc., can solve problems such as unnecessary, unrealistic coking, etc., to avoid generality, The effect of saving experimental cost and ensuring accuracy

Active Publication Date: 2013-02-13
NAT UNIV OF DEFENSE TECH
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AI Technical Summary

Problems solved by technology

At present, it is unrealistic and unnecessary to measure the amount of coking in the entire cooling system experimentally.

Method used

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  • Method for measuring coking quantity of hydrocarbon fuel
  • Method for measuring coking quantity of hydrocarbon fuel
  • Method for measuring coking quantity of hydrocarbon fuel

Examples

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Effect test

Embodiment 1

[0038] Taking China No. 3 aviation kerosene as an example, the electric heating system used in the present invention selects the first transformer and the second transformer with the maximum powers of 28KW and 6KW respectively, and the intelligent control system is the thyristor instrument control, and this electric heating system can be used. Rapidly heat up China No. 3 aviation kerosene to 1000K in the flow range of 0~15g / s. The preheating section and the test section are made of 321 stainless steel pipes with an inner diameter of 1.6 mm, an outer diameter of 3 mm and a length of 60 cm.

[0039] Put China No. 3 aviation kerosene into the test tube, and in the test section of the test tube, reach a predetermined state of a predetermined temperature of 670 ° C, a pressure of 3.5 MPa and a gas flow of 120 g / min, and keep it for 20 minutes. Test tube weight M 0 and the weight M of the test tube after coking 1 , its coking amount=M 1 -M 0 . In order to test the repeatability...

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Abstract

The invention provides a method for measuring coking quantity of hydrocarbon fuel, which includes the following steps; S1, arranging a testing tube, weighing the testing tube, and recording the weight of the testing tube as M0; S2, connecting the testing tube into a measuring air passage, introducing hydrocarbon fuel in the testing tube and heating to keep the hydrocarbon fuel in the testing tube at the predetermined temperature, pressure and flow, heat-insulating for 15-20 min to obtain the testing tube with the coked inner wall; and S3, weighing the testing tube with the coked inner wall, recording the weight as M1, and calculating out the coking quantity of hydrocarbon fuel as per the difference value of M1 and M0. The testing tube before and after the coking of the hydrocarbon fuel at the predetermined temperature, pressure and flow is weighed, the measurement for coking quantity of hydrocarbon fuel inside the testing tube is free from interference of various factors, interference factors of the measurement result and the generalized result of coking study are avoided, the measurement accuracy is guaranteed, and the method provides a quantitative reference for screening, evaluation, improvement, application and the like of hydrocarbon fuel.

Description

technical field [0001] The invention relates to the field of testing technology and fuel technology, in particular to a method for measuring the coking amount of hydrocarbon fuel. Background technique [0002] In the aerospace field, hydrocarbon fuels are widely used as fuels for engines and coolants for active cooling due to their high density, high safety, operability, and economy. However, the hydrocarbon fuel will undergo a cracking reaction at high temperature to form carbon deposits. The carbon deposits further react with the metal wall to form coking, which adheres to the metal wall. When the coking is serious, it will lead to a series of adverse consequences, such as blocking the supply system and reducing heat. Exchange efficiency, reduce oxidation resistance and stability of structural materials, cause catalyst deactivation, etc. Coking is becoming a bottleneck for the application of hydrocarbon fuels in the aerospace field. [0003] At present, the research on c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G17/00
Inventor 潘余周进王辉王宁
Owner NAT UNIV OF DEFENSE TECH
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