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Method for Measuring Coking Amount of Hydrocarbon Fuels

A technology of hydrocarbon fuels and measurement methods, which is applied in measurement devices, weighing, weighing equipment for materials with special properties/forms, etc. Save experimental costs and ensure the effect of accuracy

Active Publication Date: 2016-01-06
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 Amount of Hydrocarbon Fuels
  • Method for Measuring Coking Amount of Hydrocarbon Fuels
  • Method for Measuring Coking Amount of Hydrocarbon Fuels

Examples

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Effect test

Embodiment 1

[0038] Taking China's 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 a maximum power of 28KW and 6KW respectively, and the intelligent control system is controlled by a thyristor instrument. Adopting this cover of electric heating system can Rapidly raise the temperature of China No. 3 aviation kerosene within the flow range of 0~15g / s to 1000K. The preheating section and the test section use 321 stainless steel pipes with an inner diameter of 1.6mm, an outer diameter of 3mm and a length of 60cm.

[0039] Pass China No. 3 aviation kerosene into the test tube, and reach the predetermined state of predetermined temperature 670°C, pressure 3.5MPa and gas flow rate 120g / min in the test section of the test tube, and keep it for 20 minutes, and record the time before the injection of aviation kerosene. Test tube weight M 0 And the weight M of the test tube after coking 1...

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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 fields of testing technology and fuel technology, in particular to a method for measuring the coking amount of hydrocarbon fuels. Background technique [0002] In the field of aerospace, 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, hydrocarbon fuels will undergo cracking reactions at high temperatures to generate carbon deposits. The carbon deposits will further react with the metal wall surface to form coke and adhere to the metal wall surface. When the coke is severe, it will lead to a series of adverse consequences, such as blocking the supply system and reducing heat. Exchange efficiency, reducing the oxidation resistance and stability of structural materials, causing catalyst deactivation, etc. Coking is becoming a bottleneck in the application of hydrocarbon fuels in the aerospace field. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Patents(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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