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Continuous device for gasifying unsymmetrical dimethylhydrazine waste liquid with supercritical water

A technology of supercritical water gasification and unsymmetrical dimethylhydrazine, applied in inorganic chemistry, water/sewage treatment, bulk chemical production, etc., can solve problems such as secondary pollution, adverse biological effects, and high toxicity, and achieve COD reduction value and ammonia nitrogen concentration, shorten the reaction time, and reduce the effect of ammonia nitrogen concentration

Active Publication Date: 2015-05-20
ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT +2
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Problems solved by technology

This method has a fast processing speed, but nitrosamines and chlorinated hydrocarbons are produced in the reaction between hydrazine propellant and hypochlorite. These substances are highly toxic and will cause secondary pollution when discharged into water. In addition, there will be a large amount of Heat is released, and excessive calcium hypochlorite in water has adverse effects on organisms

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  • Continuous device for gasifying unsymmetrical dimethylhydrazine waste liquid with supercritical water

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] see figure 1 As shown, a kind of device of continuous supercritical water gasification unsymmetrical dimethylhydrazine of the present invention comprises unsymmetrical dimethylhydrazine storage tank 1, material booster pump 2, material flow meter 3, mixer 4, water tank 5, preheating Water booster pump 6, preheated water flow meter 7, first heat exchanger 8, second heat exchanger 9, preheater 10, reactor 11, cooler 12, filter 13, pressure reducing valve 14, gas Liquid separator 15 and gas production analysis and measurement system 16.

[0041] Wherein, the inlet of the material booster pump 2 is connected to the outlet of the unsymmetrical dimethylhydrazine storage tank 1, the outlet of the material booster pump 2 is connected to the inlet of the material flowmeter 3, and the outlet of the material flowmeter 3 is connected to the first inlet of the mixer 4.

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Abstract

The invention discloses a continuous device for gasifying unsymmetrical dimethylhydrazine waste liquid with supercritical water. The device comprises an unsymmetrical dimethylhydrazine storage tank, a mixer, a water tank, a preheating system and a reactor, wherein the outlet of the unsymmetrical dimethylhydrazine storage tank is connected with the first inlet of the mixer; the outlet of the water tank is connected with the second inlet of the mixer; the outlet of the mixer is connected with the inlet of the reactor, the water in the reactor is supercritical and the supercritical water and unsymmetrical dimethylhydrazine are reacted in the reactor for recycling. Compared to a kettle-type reactor, by the continuous device for gasifying unsymmetrical dimethylhydrazine waste liquid with supercritical water, the temperature of the reaction materials can be rapidly raised to a predetermined temperature, the carbon gasification rate and COD removal rate are further increased and the concentration of ammonia nitrogen in produced liquid is reduced.

Description

【Technical field】 [0001] The invention belongs to the field of clean utilization of renewable resources and waste, and in particular relates to a device for gasifying unsymmetrical dimethylhydrazine with supercritical water. 【Background technique】 [0002] Traditional methods for treating unsymmetrical dimethylhydrazine waste liquid include: [0003] 1) Activated carbon adsorption method. All indicators of this method are in line with the national emission standards and relevant regulations, but when the activated carbon is regenerated, the released unsymmetrical dimethylhydrazine needs to be reprocessed. [0004] 2) Natural purification method. This method is an effective, economical, applicable, simple, and energy-saving sewage treatment method, but the treatment time is long, and the requirements for dissolved oxygen and light conditions are high, and there will be a small amount of ammonia and hydrazine volatiles above the sewage treatment tank. [0005] 3) Ozone-ultr...

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Application Information

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IPC IPC(8): C02F1/00C02F1/72C02F9/04C01B3/38
CPCY02P20/54
Inventor 侯瑞琴郭烈锦欧阳晓平朱超陈渝楠
Owner ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT
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