Microchannel inner wall on-line coke removing device and microchannel inner wall on-line coke removing method

Abstract

The invention provides a microchannel inner wall on-line coke removing device and a microchannel inner wall on-line coke removing method. The microchannel inner wall on-line coke removing device comprises an air intake system, a coke reaction system, a cooling system and a CO2 detection system; the air intake system is connected with the coke reaction system, the cooling system and the CO2 detection system through gas delivery pipelines sequentially. The microchannel inner wall on-line coke removing method comprises the steps that air is supplied into the coke reaction system, and an inlet temperature of a reaction section is controlled at 220-270 DEG C, a wall temperature of the reaction section is controlled at 480-750 DEG C and an outlet temperature of the reaction section is controlledat 280-320 DEG C; and a reducing valve of the cooling system is opened and the pressure is controlled at 0.08-0.12 Mpa. On-line detection can be carried out, the content of coke can be obtained in real time, a measuring result is relatively accurate, a reaction tube can be recycled, cutting detection is not carried out necessarily, the problem that several complicated and high-cost pipelines or materials are cut and thus cannot be restored can be solved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to an online coke cleaning device and a coke cleaning method for the inner wall of a microchannel. Background technique [0002] In the field of aero-engines, endothermic hydrocarbon fuels are used for combustion. This fuel can take away the waste heat generated by the high-speed flight of the aircraft through the physical heat absorption of the fuel itself and the heat absorption of the cracking reaction, thereby reducing the temperature of the aircraft. However, along with the fuel cracking reaction, the coking reaction inevitably occurs, and the coke produced will have adverse consequences on the engine heat exchange and the fuel system. [0003] During the flow process, the fuel continuously absorbs the heat of the channel wall and cracks. Part of the cracked small molecular substances flow out of the reaction channel with the fluid, while the other part gathers together in the gas p...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to: aim at the problems existing in the prior art, provide an online coke cleaning device and method for the inner wall of the microchannel, and solve the problem that the channel cannot be reused due to the existing coke cleaning method

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