火箭推进

针对航天生产试验现场有毒推进剂废气废液的无害化处理,设计了一种火箭煤油/空气燃烧处理装置,通过富燃/富氧高温燃气处理硝基类氧化剂/肼类燃料的废气废液。基于该燃烧处理装置,分别进行了燃烧器性能调试以及N2O4与甲基肼的废气与废液处理实验。实验结果表明,燃烧装置在两种基本工作模态下,燃气温度小于1 200 ℃,燃烧高效、稳定; N2O4在处理流量0～20 g/s时,排放物中NOx浓度最高为25 ppm,燃气温度小于1 200 ℃; 在甲基肼处理流量x浓度小于2.0 ppm,其中燃气最高温度随甲基肼流量增加不断增大,最高达1 300 ℃。该燃烧处理装置可实现对有毒航天推进剂高效、彻底的处理,废气排放符合相关标准要求。

In order to realize harmless dipose of toxic propellant useless liquid and gas in aerospace production test site, a rocket kerosene/air combustion dipose device was designed to deal with the useless gas and liquid, and experiments of nitro oxidant or hydrazine dipose by fuel-rich or oxygen-rich high-temperature gas were carried out,respectively.The experimental results show that the combustor operated efficiently and stablely under the two basic working mode, and the gas temperature is less than 1 200 ℃.And the highest concentration of NOx in the emissions is 25 ppm when the mass flow rate of N2O4 in the range of 0～20 g/s, the gas temperature is less than 1 200 ℃ at the same time.When the mass flow rate of methylhydrazine in the range of 0～6 g/s, the VOC concentration in the emissions is x concentration is less than 2.0 ppm, the temperature of gas increases with the mass flow rate of methylhydrazine continuously, the maximum value is up to 1 300 ℃.Therefore, dipose of toxic propellant by the combustion device is efficient and complete,and exhaust emission meets relevant standards.

引言
1 燃烧处理装置
2 实验结果与讨论
3 结论

图1 有毒有害废气废液处理装置组成<br/>Fig.1 Schematic of experimental system

图1 有毒有害废气废液处理装置组成
Fig.1 Schematic of experimental system

图2 燃烧器结构示意图<br/>Fig.2 Schematic of the combustor

图2 燃烧器结构示意图
Fig.2 Schematic of the combustor

表1 喷嘴规格形式<br/>Tab.1 The types of atomizing nozzles

表1 喷嘴规格形式
Tab.1 The types of atomizing nozzles

表2 介质流量参数范围<br/>Tab.2 The range of medium flow parameters

表2 介质流量参数范围
Tab.2 The range of medium flow parameters

图3 燃烧器空气流量分配曲线<br/>Fig.3 Curve of air flow distribution

图3 燃烧器空气流量分配曲线
Fig.3 Curve of air flow distribution

图4 不同头腔空气压力下一次燃烧火焰形态<br/>Fig.4 Combustion flame shape at different air pressure in head chamber

图4 不同头腔空气压力下一次燃烧火焰形态
Fig.4 Combustion flame shape at different air pressure in head chamber

图5 燃烧器火焰状态<br/>Fig.5 Flame status of the combustor

图5 燃烧器火焰状态
Fig.5 Flame status of the combustor

图6 N2O4处理过程不同流量下浓度和温度曲线<br/>Fig.6 The concentration and temperature curve of nitrogen tetroxidedipose at different flow rates

图6 N2O4处理过程不同流量下浓度和温度曲线
Fig.6 The concentration and temperature curve of nitrogen tetroxidedipose at different flow rates

图7 甲基肼处理过程不同流量下的温度曲线<br/>Fig.7 The temperature curve of methylhydrazine dipose at different flow rates

图7 甲基肼处理过程不同流量下的温度曲线
Fig.7 The temperature curve of methylhydrazine dipose at different flow rates

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备注

引言

1 燃烧处理装置

2 实验结果与讨论

3 结论

期刊信息