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Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator

A technology of dinitrogen tetroxide and unsymmetrical dimethylhydrazine, applied in the direction of incinerator, combustion method, combustion type, etc., can solve the problems of difficult temperature control, death, corrosion, etc., and achieve easy operation, simple process, and wide source of fuel oil Effect

Inactive Publication Date: 2009-06-17
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the three well-known pollutants are: NO X , SO 2 and hydrocarbon compounds, but there are also some unknown harmful substances with small emissions, such as hydrazine compounds. The rocket liquid propellant used to launch satellites in my country's satellite launch site uses unsymmetrical dimethyl hydrazine, and the oxidant uses Dinitrogen tetroxide, both liquids are toxic and corrosive. During use, some waste liquid and waste gas will be generated. Direct discharge into the atmosphere will cause serious harm to humans, animals, plants and the entire nature, and even cause pollutants. On the other hand, due to its oxidative and flammable and explosive properties, when the concentration accumulates to a certain level, there is a hidden danger of explosion at any time. Therefore, researchers have researched and developed various treatment methods, such as catalytic combustion The catalytic combustion method is to directly carry out the catalytic oxidation reaction between the waste liquid to be treated and the oxidant on the catalyst bed. Since the catalytic combustion is an exothermic reaction, the reaction is violent, and the heat released is concentrated and difficult to carry out, making it difficult to control the temperature. Once overheating, the life of the catalyst will be shortened and deactivated, and the regular replacement of the catalyst will increase the operating cost. Due to the unstable concentration of the waste liquid, the catalytic combustion is very difficult to control
In addition, there are strict requirements on the material of the reactor, which increases the cost of waste liquid treatment as a whole

Method used

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  • Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: processing thing is example with dinitrogen tetroxide waste liquid 100Wt%, fuel oil is with kerosene:

[0041] During the processing operation, the air enters the furnace from the primary air inlet 4 and the secondary air inlet 6, the primary air coefficient is 0.96, the total air coefficient is controlled at 2.5, the ignition button is activated, ignition, fuel injection, air distribution, and combustion are automatically carried out. The furnace starts to heat up. When the temperature of the temperature measuring port 9 of the furnace body reaches 580°C, the nitrogen tetroxide waste liquid enters the furnace and burns together with the fuel under the action of the air. At this time, the primary air coefficient is adjusted to 0.72, and the total air coefficient is 2.5. Keep the temperature in the furnace between 600 and 650°C. After combustion, the exhaust gas is discharged through the chimney 11. Sampling analysis shows that the nitrogen dioxide content i...

Embodiment 2

[0043] Other conditions are the same as embodiment 1, it is 80% dinitrogen tetroxide that the waste liquid is changed into concentration, during processing operation, primary air coefficient is 0.97, and total air coefficient is controlled at 2.6, starts igniter button, strikes a fire, injects oil, The air distribution and combustion are carried out automatically, and the furnace starts to heat up. When the temperature of the temperature measuring port 9 of the furnace body reaches 580°C, the dinitrogen tetroxide waste liquid enters the furnace and burns together with the fuel under the action of the air. At this time, adjust the air coefficient once It is 0.74, and the total air coefficient is 2.7, so that the temperature in the furnace is kept between 600 and 650°C. After sampling and analysis, the nitrogen dioxide content in the tail gas is 650ppm, which meets the national emission standards.

Embodiment 3

[0045] Other conditions are the same as embodiment 1, it is 20% dinitrogen tetroxide that the treatment waste liquid is changed into concentration, and fuel oil is changed into aviation kerosene, during processing operation, primary air coefficient is 0.98, and total air coefficient is controlled at 2.9, and starts the igniter button , ignition, fuel injection, air distribution, and combustion are carried out automatically, and the furnace starts to heat up. When the temperature of the temperature measuring port 9 of the furnace body reaches 600 ° C, the waste liquid of dinitrogen tetroxide enters the furnace and burns together with the fuel under the action of air. At this time, adjust the primary air coefficient to 0.80, the total air coefficient to 2.9, and keep the temperature of the temperature measuring port of the furnace between 600-650°C. Sampling analysis shows that the nitrogen dioxide content in the exhaust gas is 630ppm, which meets the national emission standards. ...

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Abstract

The invention relates to a method for dealing dinitrogen tetroxide or asymmetrical dimethyl hydraxine discard solution which comprises: purging the incinerator hearth with air, controlling the general excess air coefficient of the air between 2.4í½2.9, injecting fuel oil and firing to increase the temperature of the hearth; when the temperature of the flue gas in the incinerator gets 580í½600 degree, injecting dinitrogen tetroxide or asymmetrical dimethyl hydraxine discard solution to fired with fuel oil, exhausting the end gas via the chimney to the air.

Description

technical field [0001] The invention belongs to a method and an incinerator for treating unsymmetrical dimethylhydrazine waste liquid or dinitrogen tetroxide waste liquid with different concentrations by burning liquid fuel oil. Background technique [0002] With the continuous progress and development of society, human beings are also aware of the importance of protecting the natural environment. At present, my country has attached great importance to environmental protection, and environmental protection engineering projects have become an extremely important research topic. [0003] At present, the three well-known pollutants are: NO X , SO 2 and hydrocarbon compounds, but there are also some unknown harmful substances with small emissions, such as hydrazine compounds. The rocket liquid propellant used to launch satellites in my country's satellite launch site uses unsymmetrical dimethyl hydrazine, and the oxidant uses Dinitrogen tetroxide, both liquids are toxic and cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/12F23G5/14F23G7/05
Inventor 曹立仁侯瑞琴刘兰英刘占卿郑质文刘东勋周东兴董根全
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI