Method of high-officieny treating spacecraft impelling agent of spacecraft and its special eequipment

Abstract

A process for effectively treating the sewage containing the propellant of spacercraft includes such steps as using high-pressure metering pump to raise the pressure of said sewage to 28-30 MPa, preheating it to 350-370 deg.c, mixing it with O2 under 28-30 MPa in a high-pressure reactor, quickly heating the mixture to 500-550 deg.C and decomposing reaction for 95 seconds to decompose the toxic C2N2H8 by more than 99.99%. Its advantages are high efficiency and effect, less energy consumption and low cost.

Description

technical field [0001] The invention relates to environmental protection waste treatment technology, in particular to a method and special equipment for efficiently treating spaceflight propellant waste water. Background technique [0002] With the large-scale development of aviation and aerospace, the output of propellant fuel used in aerospace engine systems is increasing day by day. At present, most of the propellant fuel used in countries around the world is N 2 o 4 / Hydrazines (unsymmetrical dimethylhydrazine, monomethylhydrazine, hydrazine, etc.), such as the US Hercules 2 missile (using N 2 o 4 / unsymmetrical dimethylhydrazine 144 tons), my country's Long March series of launch vehicles (boosters and first and second stages use N 2 o 4 / unsymmetrical dimethylhydrazine 444 tons) and so on (document 1: Vigorous Chinese Long March series launch vehicles, Space Express, 2000: 29-30), although this liquid propellant has good specific impulse performance and spontane...

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Problems solved by technology

[0003] At present, a variety of methods for treating propellant wastewater have been reported in my country. For example, Fan Bingan et al. used photocatalysis to degrade unsymmetrical dimethylhydrazine in water (Document 3: Fan Bingan, Jia Ying, Xu Guogen, Loaded TiO2 stationary phase photocatalysis Degradation of unsymmetrical dimethylhydrazine in water, Shanghai Environmental Science, 2000 (5): 12-15), but found that after 2 hours of light, the degradation rate of unsymmetrical dimethylhydrazine only reached 65%, and Wang Bin et al. used TiO 2- Cu 2+ system for the degradation of unsymmetrical dimethylhydrazine (Document 4: Wang Bin, Yang Ping. TiO2-Cu2+ system degradation of unsymmetrical dimethylhydrazine. Yunnan Environmental Science. 2000, 19, (4): 33-35), Jia Ying et al. used the adsorption method to degrade unsymmetrical dimethylhydrazine in soil (document 5: Jia Ying, Xu Guogen, Xu Qin, etc., Agricultural Environmental Protection, Research on the adsorption and degradation of unsymmetrical dimethylhydrazine in soil, 2001, 20 (6 ): 14-17), but the effects of these treatment methods reported above are not ideal, not only the treatment efficiency is low, but also the residual amount of unsymmetrical dimethylhydrazine after treatment is still much higher than the national aerospace propellant water pollutant discharge standard (Document 6: National Standard GB14374-93, Aerospace Propellant Water Pollutant Discharge Standard, 1993, 12, 1) The required standard ≤0.5mg / L

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