CN1699827A - Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator - Google Patents
Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator Download PDFInfo
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- CN1699827A CN1699827A CN 200410064555 CN200410064555A CN1699827A CN 1699827 A CN1699827 A CN 1699827A CN 200410064555 CN200410064555 CN 200410064555 CN 200410064555 A CN200410064555 A CN 200410064555A CN 1699827 A CN1699827 A CN 1699827A
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- waste liquid
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- dinitrogen tetroxide
- unsymmetrical dimethylhydrazine
- incinerator
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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 2.4-2.9, injecting fuel oil and firing to increase the temperature of the hearth; when the temperature of the flue gas in the incinerator gets 580-600 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
The invention belongs to a method for treating unsymmetrical dimethylhydrazine waste liquid and/or dinitrogen tetroxide waste liquid with different concentrations by a liquid fuel oil combustion method and an incinerator.
Background
With the continuous progress and development of society, human beings also realize the importance of protecting the natural environment, at present, China has put high importance on environmental protection, and environmental protection engineering projects have become an extremely important research subject.
Currently, three major pollutants are well known: NOx, SO2Hydrocarbon compounds, but some harmful substances which are unknown by people and have small discharge amount, such as hydrazine compounds, unsymmetrical dimethylhydrazine is adopted as a rocket liquid propellant used by a satellite launching field launching satellite in China, dinitrogen tetroxide is adopted as an oxidant, both the toxic liquid and the corrosive liquid can generate waste liquid and waste gas in the using process, the waste liquid and the waste gas can generate serious harm to human beings, animals and plants and the whole natural world and even cause the exhaustion or death of pollutants when being directly discharged into the atmosphere, on the other hand, because of the oxidizability and the flammability, when the concentration is accumulated to a certain degree, the hidden danger of explosion exists at any time, therefore, researchers research and develop various treatment methods, such as a combustion method, the catalytic combustion method is a catalytic oxidation reaction of the waste liquid to be treated and the oxidant on a catalyst bed layer, and because the catalytic combustion is an exothermic reaction, the reaction is violent, the discharged heat is concentrated and is not easy to carry out, so that the temperature is difficult to control, the service life of the catalyst is shortened and the catalyst is inactivated once the temperature is overflowed, the operation cost is increased due to the regular replacement of the catalyst, and the catalytic combustion is very difficult to control due to the unstable concentration of the waste liquid. In addition, the requirements on the reactor material are strict, so that,the cost of treating the waste liquid is increased as a whole.
Disclosure of Invention
The invention aims to provide a method and an incinerator for treating dinitrogen tetroxide waste liquid with different concentrations and/or unsymmetrical dimethylhydrazine waste liquid with different concentrations, which are simple and convenient to operate and low in cost and do not form secondary pollution.
The reaction mechanism of the present invention is as follows:
the kerosene combustion provides a high-temperature environment, when the dinitrogen tetroxide waste liquid is treated, oxygen is insufficient, a reducing medium is provided, and nitrogen dioxide is reduced; when the unsymmetrical dimethylhydrazine waste liquid is treated, trace excess oxygen is generated, unsymmetrical dimethylhydrazine is completely oxidized, secondary air is rapidly and completely combusted with residual organic matters, the furnace temperature is reduced, nitrogen which is generated by reaction and is in a nascent state is not oxidized again, and tail gas is discharged into the atmosphere through a chimney.
The reaction formula for treating the unsymmetrical dimethylhydrazine waste liquid is as follows:
reaction formula for treating dinitrogen tetroxide waste liquid
The object of the invention is achieved by: kerosene is used as fuel, the fuel oil is fed into the incinerator through a nozzle and ignited, and a certain amount of air is introduced, so that the temperature of the incinerator begins to rise. When the temperature of the flue gas in the furnace reaches the specified requirement, the dinitrogen tetroxide waste liquid or the unsymmetrical dimethylhydrazine waste liquid is introduced to be combusted together with the kerosene to generate nitrogen, water and carbon dioxide, thereby eliminating pollution and achieving the purpose of treating the waste liquid.
The method for treating the waste liquid comprises the following steps:
(1) purging a hearth of the incinerator by using air to control the primary air excess coefficient to be 0.95-1.05, after secondary air is introduced, controlling the total air excess coefficient to be 2.4-2.9, then introducing fuel oil and igniting, and starting to heat the hearth;
(2) when the temperature of the flue gas of the incinerator reaches 580-600 ℃, introducing dinitrogen tetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid, and combusting the dinitrogen tetroxide waste liquid or the unsymmetrical dimethylhydrazine waste liquid with fuel oil; when the dinitrogen tetroxide waste liquid is treated, the primary air coefficient is 0.71-0.85, the total air coefficient is controlled to be 2.5-2.9, the temperature of flue gas is kept between 600 ℃ and 650 ℃, so that fuel oil which is not completely combusted and dinitrogen tetroxide are completely combusted under the action of secondary air, and finally tail gas is discharged into the atmosphere through a chimney through a flue; when the unsymmetrical dimethylhydrazine waste liquid is treated, the primary air coefficient is 1.05-1.5, the total air coefficient is controlled to be 2.3-2.6, the temperature of flue gas is kept between 600-650 ℃, so that fuel oil which is not completely combusted and unsymmetrical dimethylhydrazine are completely combusted under the action of secondary air, and finally tail gas is discharged into the atmosphere through a chimney through a flue.
The fuel oil as described above may be jet fuel, regular kerosene and light diesel oil.
The concentration of the dinitrogen tetroxide waste liquid is 20 to 100 weight percent
The concentration of the unsymmetrical dimethylhydrazine waste liquid is 20 to 100 weight percent
In order to complete the treatment method, a special incinerator is designed, and the special incinerator comprises a heat-resistant steel furnace body, a combustor, a jacket and a chimney; a heat-preserving jacket is arranged on the furnace body; the chimney is provided with a fire observation hole and a monitoring hole, and the burner is fixed at the front end of the furnace body; the fuel oil nozzle and the waste liquid nozzle are integrally arranged in the combustor, the primary air inlet is positioned in the middle section of the combustor, the gas distribution plate is positioned at the front end of the nozzle in the combustor, the upper end of the tail part of the furnace body is provided with a temperature measuring port, the outer part of the furnace body is provided with a heat-insulating jacket, the secondary air inlet is arranged at the front end of the jacket, the chimney is positioned at the tail part of the furnace body, and the detection hole and the fire observation hole are respectively arranged at the upper part and the lower part.
The furnace body can be fixed on the movable vehicle carrier.
The equipment can treat dinitrogen tetroxide waste liquid with different concentrations and unsymmetrical dimethylhydrazine waste liquid with different concentrations, and the discharged tail gas is qualified and does not form secondary pollution.
The incinerator has the following characteristics:
1 the whole structure is compact, the volume is small, the weight is light, and the movement is convenient.
2, the process is simple, easy to operate, safe, reliable, economical and applicable, and the fuel oil source is wide.
The 3 furnaces can simultaneously or respectively treat two kinds of waste liquid with different physical properties and different concentrations.
4 on the premise that the fuel oil continuously provides heat, the treated waste liquid can be continuously or discontinuously supplied, and the treatment amount can also be changed in due time.
5 the combustor has a plurality of purposes, not only has the function of an igniter, but also has the function of a combustor.
6 does not produce secondary pollution, and discharges NO in tail gas after treatment2The content is less than 700ppm, and the unsymmetrical dimethylhydrazine content is less than 1 ppm.
Detailed Description
The embodiments of the present invention are further explained with reference to the drawings.
FIG. 1 is a schematic view of the structure of an incinerator according to the present invention
As shown in the figure, 1 burner, 2 fuel oil nozzle, 3 waste liquid nozzle, 4 primary air inlet, 5 gas distribution plate, 6 secondary air inlet, 7 jacket, 8 furnace body, 9 feet temperature measuring port, 10 detecting hole, 11 chimney, 12 fire observing hole and 13 vehicle carrying hole.
Combustor 1 installs the front end at the furnace body, and fuel oil nozzle 2 and waste liquid nozzle 3 wholly pack into the inside of combustor 1, and primary air inlet 4 is located the middle-section portion of combustor 1, and gas distribution plate 5 is located the front end of combustor 1 inner nozzle, and 8 afterbody upper ends of furnace body are equipped with temperature measurement mouth 9, and 8 outsides of furnace body are equipped with heat preservation and press from both sides cover 7, and secondary air inlet 6 adorns at the front end that presss from both sides cover 7, and chimney 11 is located the afterbody of furnace body 8. The inspection hole 10 and the fire observation hole 12 are respectively provided at upper and lower portions on the chimney 11.
In order to be suitable for different places to process at any time, the furnace body 8 is fixed on a vehicle carrier 13, and the vehicle carrier is provided with a steering gear, so that the furnace body is flexible and portable, and can be pulled by a vehicle or pushed by a person.
Example 1: the treated substances are 100 Wt% of dinitrogen tetroxide waste liquid, and the fuel oil is kerosene as an example:
during treatment, air enters a hearth from a primary air inlet 4 and a secondary air inlet 6, the primary air coefficient is 0.96, the total air coefficient is controlled to be 2.5, an igniter button is started, ignition, oil injection, air distribution and combustion are automatically carried out, the furnace starts to be heated, when the temperature of a furnace body temperature measuring port 9 reaches 580 ℃, nitrous oxide waste liquid enters the hearth to be combusted with fuel oil under the action of the air, at the moment, the primary air coefficient is adjusted to be 0.72, the total air coefficient is 2.5, the temperature in the furnace is kept between 600 ℃ and 650 ℃, tail gas after combustion is discharged through a chimney 11, sampling analysis is carried out, and the content of nitrogen dioxide in the tail gas is 680 ppm. The total hydrocarbon and the 3, 4-benzopyrene meet the national emission standard.
Example 2:
the other conditions are the same as the embodiment 1, the waste liquid is changed into dinitrogen tetroxide with the concentration of 80 percent, when the treatment operation is carried out, the primary air coefficient is 0.97, the total air coefficient is controlled to be 2.6, the button of an igniter is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of a temperature measuring port 9 of the furnace body reaches 580 ℃, the dinitrogen tetroxide waste liquid enters a hearth and is combusted with fuel oil under the action of air, at the moment, the primary air coefficient is adjusted to be 0.74, the total air coefficient is 2.7, the temperature in the furnace is kept between 600 ℃ and 650 ℃, the sampling analysis is carried out, the content of nitrogen dioxide in tail gas is 650ppm, and the.
Example 3:
other conditions are the same as the embodiment 1, the treated waste liquid is changed into dinitrogen tetroxide with the concentration of 20 percent, the fuel oil is changed into aviation kerosene, when the treatment operation is carried out, the primary air coefficient is 0.98, the total air coefficient is controlled to be 2.9, the button of an igniter is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of the temperature measuring port 9 of the furnace body reaches 600 ℃, the dinitrogen tetroxide waste liquid enters the hearth and is combusted with the fuel oil under the action of air, at the moment, the primary air coefficient is adjusted to be 0.80, the total air coefficient is 2.9, the temperature of the temperature measuring port of the furnace body is kept between 600 ℃ and 650 ℃, the sampling analysis is carried out, and the nitrogen dioxide content in the tail.
Example 4:
the fuel oil is changed into light diesel oil, other conditions are the same as those in the embodiment 3, and sampling analysis shows that the content of nitrogen dioxide in tail gas is 650ppm and meets the emission standard specified by the state.
Example 5:
the other conditions are the same as the embodiment 1, the waste liquid treatment is changed into unsymmetrical dimethylhydrazine with the concentration of 100 percent, during the treatment operation, the primary air coefficient is 0.96, the total air coefficient is controlled to be 2.65, the igniter button is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of the furnace body temperature measuring port 9 reaches 590 ℃, the unsymmetrical dimethylhydrazine waste liquid is injected into the hearth to be combusted together with the fuel under the action of the air, at the moment, the primary air coefficient is adjusted to be 1.07, the total air coefficient is adjusted to be 2.47, the temperature of the furnace body temperature measuring port is kept between 600 ℃ and 650 ℃, the tail gas is sampled and analyzed, the unsymmetrical dimethylhydrazine content is 0.6ppm, and the.
Example 6:
the other conditions are the same as the embodiment 1,the treated waste liquid is changed into unsymmetrical dimethylhydrazine with the concentration of 80 percent, during the treatment operation, the primary air coefficient is 0.97, the total air coefficient is controlled to be 2.7, the igniter button is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of the temperature measuring port 9 of the furnace body reaches 600 ℃, the unsymmetrical dimethylhydrazine waste liquid is injected into a hearth and is combusted together with fuel oil under the action of air, at the moment, the primary air coefficient is adjusted to be 1.07, the total air coefficient is adjusted to be 2.33, the temperature of the flue gas of the furnace is kept between 600 ℃ and 650 ℃, the sampling analysis is carried out, the unsymmetrical dimethylhydrazine content is 0.55ppm, and.
Example 7:
the other conditions are the same as the embodiment 1, the treated waste liquid is changed into unsymmetrical dimethylhydrazine with the concentration of 50 percent, during the treatment operation, the primary air coefficient is 0.975, the total air coefficient is controlled to be 2.85, the igniter button is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of the temperature measuring port 9 of the furnace body reaches 595 ℃, the unsymmetrical dimethylhydrazine waste liquid is injected into the hearth to be combusted together with the fuel oil under the action of the air, at the moment, the primary air coefficient is adjusted to be 1.45, the total air coefficient is adjusted to be 2.38, the temperature of the flue gas of the furnace is kept between 600 ℃ and 650 ℃, the sampling analysis is carried out, the unsymmetrical dimethylhydrazine content is 0.52 ppm.
Example 8:
the other conditions are the same as the example 1, except that the treated waste liquid is changed into unsymmetrical dimethylhydrazine with the concentration of 20 percent, when the treatment is operated, the primary air coefficient is 0.98, the total air coefficient is controlled to be 2.9, the button of an igniter is started, the ignition, the oil injection, the air distribution and the combustion are automatically carried out, the temperature of the furnace is raised, when the temperature of the temperature measuring port 9 of the furnace body reaches 600 ℃, the unsymmetrical dimethylhydrazine waste liquid is injected into a hearth to be combusted together with fuel oil under the action of air, at the moment, the primary air coefficient is adjusted to be 1.25, the total air coefficient is adjusted to be 2.49, the temperature of the flue gas of the furnace is kept between 600 ℃ and 650 ℃, the sampling analysis is carried out, the unsymmetrical dimethylhydrazine content is 0..
Example 9: the fuel oil is changed into aviation kerosene, other conditions are the same as those in the embodiment 8, sampling analysis shows that the unsymmetrical dimethylhydrazine content is 0.5ppm, and tail gas meets the national emission standard.
Example 10: the fuel oil is changed into light diesel oil, other conditions are the same as those of the embodiment 8, sampling analysis shows that the unsymmetrical dimethylhydrazine content is 0.5ppm, and tail gas meets the national emission standard.
Claims (6)
1. A method for treating dinitrogen tetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid is characterized by comprising the following steps:
(1) purging a hearth of the incinerator by using air to control the primaryair excess coefficient to be 0.95-1.05, after secondary air is introduced, controlling the total air excess coefficient to be 2.4-2.9, then introducing fuel oil and igniting, and starting to heat the hearth;
(2) when the temperature of the flue gas of the incinerator reaches 580-600 ℃, introducing dinitrogen tetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid, and combusting the dinitrogen tetroxide waste liquid or the unsymmetrical dimethylhydrazine waste liquid with fuel oil; when the dinitrogen tetroxide waste liquid is treated, the primary air coefficient is 0.71-0.85, the total air coefficient is controlled to be 2.5-2.9, the temperature of flue gas is kept between 600 ℃ and 650 ℃, so that fuel oil which is not completely combusted and dinitrogen tetroxide are completely combusted under the action of secondary air, and finally tail gas is discharged into the atmosphere through a chimney through a flue; when the unsymmetrical dimethylhydrazine waste liquid is treated, the primary air coefficient is 1.05-1.5, the total air coefficient is controlled to be 2.3-2.6, the temperature of flue gas is kept between 600-650 ℃, so that fuel oil which is not completely combusted and unsymmetrical dimethylhydrazine are completely combusted under the action of secondary air, and finally tail gas is discharged into the atmosphere through a chimney through a flue.
2. The method according to claim 1, wherein the fuel oil is jet fuel oil, regular kerosene or light diesel oil.
3. The method for treating dinitrogen tetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid according to claim 1, wherein the concentration of the dinitrogen tetroxide waste liquid is 20 wt% to 100 wt%.
4. The method for treating dinitrogentetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid according to claim 1, wherein the concentration of the unsymmetrical dimethylhydrazine waste liquid is 20 wt% to 100 wt%.
5. An incinerator for use in a method of treating dinitrogen tetroxide waste liquid or unsymmetrical dimethylhydrazine waste liquid according to any one of claims 1 to 4, comprising a burner (1), a fuel oil nozzle (2), a waste liquid nozzle (3), a primary air inlet (4), a gas distribution plate (5), a secondary air inlet (6), a jacket (7), a furnace body (8), a temperature measuring port (9), a detecting hole (10), a chimney (11), and a fire observing hole (12); it is characterized in that the burner (1) is fixed at the front end of the furnace body; the fuel oil nozzle (2) and the waste liquid nozzle (3) are integrally arranged in the combustor (1), the primary air inlet (4) is positioned at the middle section of the combustor (1), and the gas distribution plate (5) is positioned at the front end of the nozzle in the combustor (1); the upper end of the tail part of the furnace body (8) is provided with a temperature measuring port (9); a jacket (7) is arranged outside the furnace body (8), and a secondary air inlet (6) is arranged at the front end of the jacket (7); the chimney (11) is positioned at the tail part of the furnace body (8), and the detection hole (10) and the fire observation hole (12) are respectively arranged at the upper part and the lower part of the chimney (11).
6. An incinerator according to claim 5, further comprising a carrying vehicle (13), wherein the incinerator is fixed to the carrying vehicle (13), and the carrying vehicle (13) is provided with a steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410064555 CN100501238C (en) | 2004-11-19 | 2004-11-19 | Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410064555 CN100501238C (en) | 2004-11-19 | 2004-11-19 | Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699827A true CN1699827A (en) | 2005-11-23 |
| CN100501238C CN100501238C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410064555 Expired - Fee Related CN100501238C (en) | 2004-11-19 | 2004-11-19 | Method for treating dinitrogen tetroxide and/or dimazine spent liquor and incinerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102587A (en) * | 2019-12-13 | 2020-05-05 | 江苏中圣高科技产业有限公司 | Ultra-clean exhaust gas treatment system and treatment method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400695Y (en) * | 1999-12-13 | 2000-10-11 | 中国科学院山西煤炭化学研究所 | Incinerator of nitrogen oxide waste gas |
| CN1159541C (en) * | 1999-12-22 | 2004-07-28 | 中国科学院山西煤炭化学研究所 | Method of treating uns-dimethylhydrazine waste gas in combustion of fuel oil and its equipment |
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- 2004-11-19 CN CN 200410064555 patent/CN100501238C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102587A (en) * | 2019-12-13 | 2020-05-05 | 江苏中圣高科技产业有限公司 | Ultra-clean exhaust gas treatment system and treatment method |
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| Publication number | Publication date |
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| CN100501238C (en) | 2009-06-17 |
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