CN206563303U - A kind of processing unit of dinitrogen tetroxide spent liquor - Google Patents
A kind of processing unit of dinitrogen tetroxide spent liquor Download PDFInfo
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- CN206563303U CN206563303U CN201720203635.0U CN201720203635U CN206563303U CN 206563303 U CN206563303 U CN 206563303U CN 201720203635 U CN201720203635 U CN 201720203635U CN 206563303 U CN206563303 U CN 206563303U
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- China
- Prior art keywords
- dinitrogen tetroxide
- spent liquor
- gasifier
- incinerator
- processing unit
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Abstract
The utility model discloses a kind of processing unit of dinitrogen tetroxide spent liquor, including dinitrogen tetroxide spent liquor tank, gasifier, circulation water tank, incinerator, the dinitrogen tetroxide spent liquor tank connects air and liquid mixer by pipeline, air and liquid mixer is connected with gasifier top, electrical heating elements are provided with the middle part of gasifier and recirculated water water tank one circulation loop of formation, circulation water tank；Gasifier bottom connects incinerator, and incinerator side is provided with fuel inlet, and opposite side, which is provided with the top of chimney, incinerator, is provided with auxiliary air entrance.The utility model is by the N of liquid2O4Waste liquid is mixed with nitrogen, and NO is converted into by gasification installation2And N2O4Gas and N2Mixed gas, then by pipeline send into incinerator in combustion reaction is carried out together with fuel, realize N2O4Waste liquid harmless treatment.This method operation safety, process is simple, be easily manipulated.
Description
Technical field
The utility model is related to the processing unit and method of a kind of dinitrogen tetroxide spent liquor, belongs to environmental protection technology neck
Domain.
Background technology
The dinitrogen tetroxide in space industry（N2O4）It is a kind of conventional oxidant, launching site is in metaideophone, filling, maintenance
A large amount of N are produced during inspection, flowmeter verification, simulated training etc.2O4Waste liquid, its toxicity is III grade, it is easy to volatilized, corrosivity
It is extremely strong, belong to severe poisonous chemicals, such as without processing directly discharge, can make people, animal, fowl of surrounding etc. poisoning, make plant by
Infringement, the working environment of place and the deterioration of the ecological environment on periphery, the equipment of place suffer erosion.Therefore, it is necessary to N2O4Waste liquid
Handled.
For many years, N2O4The processing method of waste liquid, generally uses acid-base neutralization method.Acid-base neutralization method is first by waste liquid water
Dilution, then carries out neutralization reaction, this is a kind of open processing method, and cleanliness factor is low using sodium carbonate or sodium acid carbonate,
Effect is poor, while generating sodium nitrate and natrium nitrosum waste liquid, produces new secondary pollution；It is in open container during due to processing
It is middle to carry out, and N2O4Boiling point（21.5℃）, relatively low, steam pressure is higher under normal temperature（96kPa at 20 DEG C）Therefore in processing procedure
In have substantial amounts of nitrogen dioxide（NO2）And N2O4Gas diffusion is into environment, and processing procedure is not thorough, still suffers from pollution.
Because N2O4Waste liquid should not pressurize after by nozzle atomization be injected directly into incinerator with the combust of fuel one, especially
It is liquid fuel.Because fluid combustion is gasification diffusion type burning.Liquid oxidizer and liquid-phase combustion agent by pressurization,
Atomization, gasification, contact diffusion mixing, combustion reaction dramatic temperature is up to 2500 DEG C, due to high temperature and inert free gas, fuel
Explosion limit scope broadens, while flame transmission speed is accelerated；Although the burning of incinerator has begun to, due to N2O4It is useless
Liquid with liquid fuel in atomization, gasification inhomogeneities so that contact mixing during form local concentration
Gradient, with blast repeatedly in gasification, mixing, combustion process, makes N2O4The processing procedure stability of waste liquid is poor, is difficult
Control.
N2O4Waste liquid direct weighting atomizing type sprays into burner hearth and burnt with incendiary agent, if occurring poor fuel in combustion
When fired state, N2O4Fast decoupled produce a large amount of gases, have the tendency of to cause thermal explosion, N2O4Thermal explosion temperature is 565
℃。
The content of the invention
The utility model aims to provide a kind of operation safety, process is simple, be easily manipulated, the N of totally-enclosed2O4The place of waste liquid
Manage device and method.
Essence of the present utility model is by the N of liquid2O4Waste liquid is mixed with nitrogen, and NO is converted into by gasification installation2With
N2O4The mixed gas of gas（Gaseous mixture after gasifying below is with NO2Gas is described）, then sent into by pipeline in incinerator
Combustion reaction is carried out together with fuel, N is realized2O4Waste liquid harmless treatment.
The utility model provides a kind of processing unit of dinitrogen tetroxide spent liquor, including dinitrogen tetroxide spent liquor tank, gas
Change device, circulation water tank, incinerator, the dinitrogen tetroxide spent liquor tank connects air and liquid mixer, air and liquid mixer by pipeline
It is connected with gasifier top, gasifier and recirculated water water tank one circulation loop of formation, electrical heating is provided with the middle part of circulation water tank
Element；Gasifier bottom connects incinerator, and incinerator side is provided with fuel inlet, and opposite side is provided with the top of chimney, incinerator and set
There is auxiliary air entrance.
The gasifier is one kind in tubular heat exchanger, spiral coil heat exchanger, floating head heat exchanger, heat exchange of heat pipe,
Using recirculated water as heat carrier.
The air and liquid mixer connects dinitrogen tetroxide spent liquor tank and nitrogen pipeline, dinitrogen tetroxide spent liquor tank and gas respectively
N is respectively equipped with the pipeline of liquid mixer connection2O4Valve, N2O4Flowmeter, N2O4N is respectively equipped with check-valves, nitrogen pipeline2
Valve, N2Flowmeter, N2Check-valves.
The dinitrogen tetroxide spent liquor tank is connected with nitrogen pipeline；With nitrogen pressurising and the certain pressure of maintenance.
In the outlet of gasifier provided with the check-valves interlocking on pressure sensor, with dinitrogen tetroxide pipeline, after gasification
After exhaust gas pressure >=0.2MPa, dinitrogen tetroxide spent liquor outlet valve is closed.
In the utility model, the material that equipment is in contact with medium selects resistance to nitric acid or the austenite of nitrous acid corrosion not
Become rusty steel.
The beneficial effects of the utility model：
（1）The process of processing dinitrogen tetroxide spent liquor is closed, and no waste liquid is produced, no NO2Gas diffusion is to peripheral ring
Border and do not generated in processing procedure new secondary pollution need processing；
（2）N2O4Waste liquid and N2After mixing, gasify by heat carrier indirectly heat of water, be mixed into and burn with combustion-supporting air
Burn in stove and burn, it is to avoid liquid oxidizer and liquid-phase combustion agent is in gasification, mixing, burning and lean combustion in combustion occurs
N during material2O4Thermal explosion during fast decoupled（N2O4Thermal explosion temperature is 565 DEG C）, solve waste treatment process stationarity and
Safety issue, improve operating environment, mitigate operating personnel live load, during disposing waste liquid operating personnel without
Moment wears complete anti-biochemical defence suit；
（3）The cleanliness factor of exhaust emissions is high, NO2≤400mg/Nm3。
Brief description of the drawings
Fig. 1 is the processing unit schematic diagram of the utility model dinitrogen tetroxide spent liquor.
1 is dinitrogen tetroxide spent liquor tank in figure, and 2 be circulation water tank, and 3 be electrical heating elements, and 4 be water circulating pump, and 5 be gas
Change device, 6 be N2Valve, 7 be N2O4Valve, 8 be N2Flowmeter, 9 be N2O4Flowmeter, 10 be N2Check-valves, 11 be N2O4Non-return
Valve, 12 be air and liquid mixer, and 13 be incinerator, and 14 be fuel inlet, and 15 be auxiliary air entrance, and 16 be chimney, and 17 be sampling
Mouthful, 18 be peep hole；A is nitrogen, and B is primary air, and C is fuel, and D is auxiliary air.
Embodiment
The utility model is further illustrated below by embodiment, but is not limited to following examples.
Embodiment 1：
As shown in figure 1, a kind of processing unit of dinitrogen tetroxide spent liquor, including dinitrogen tetroxide spent liquor tank 1, gasifier 5,
Water tank 2, incinerator 13 are circulated, the dinitrogen tetroxide spent liquor tank 1 connects air and liquid mixer 12, air and liquid mixer by pipeline
12 are connected with the top of gasifier 5, and gasifier 5 is provided with circulation one circulation loop of formation of water tank 2, the middle part of circulation water tank 2
Electrical heating elements 3；The bottom of gasifier 5 connects incinerator 13, and the side of incinerator 13 is provided with fuel inlet, and opposite side is provided with chimney
16, the top of incinerator 13 is provided with auxiliary air entrance 15.
The gasifier 5 is one kind in tubular heat exchanger, spiral coil heat exchanger, floating head heat exchanger, heat exchange of heat pipe,
Using recirculated water as heat carrier.
The air and liquid mixer 12 connects dinitrogen tetroxide spent liquor tank 1 and nitrogen pipeline, dinitrogen tetroxide spent liquor tank 1 respectively
N is respectively equipped with the pipeline being connected with air and liquid mixer 122O4Valve 7, N2O4Flowmeter 9, N2O4On check-valves 11, nitrogen pipeline
It is respectively equipped with N2Valve 6, N2Flowmeter 8, N2Check-valves 10.
The dinitrogen tetroxide spent liquor tank 1 is connected with nitrogen pipeline；With nitrogen pressurising and the certain pressure of maintenance.
In the outlet of gasifier 5 provided with the N on pressure sensor, with dinitrogen tetroxide pipeline2O4Check-valves 11 is interlocked, when
After gasification after exhaust gas pressure >=0.2MPa, dinitrogen tetroxide spent liquor outlet valve is closed.
The utility model handles the technological process of dinitrogen tetroxide spent liquor, comprises the following steps：It will be equipped with N2O4Waste liquid it is close
Close container N2Pressurising and this pressure is maintained, by equipment for gasification respectively by nitrogen and N2O4Mixed after liquid meter, through gasifier
Gasification, by NO after gasification2And N2Mixed gas, is pipelined to incinerator upstream, mixes and together enter with combustion air
The burner of incinerator and the combust of fuel one.
Control the oxidant of incinerator first-stage burning process（Air+NO2）Coefficient is controlled in 0.5~0.95, the second level
Air coefficient >=1.1 of combustion process, remaining fuel is burnt completely；NO in tail gas from incinerator2Content≤400mg/Nm3。
Due to heated medium N2O4Waste liquid, boiling point is less than 21.15 DEG C, when temperature is more than 140 DEG C, N2O4All turn
Turn to NO2, and begin with nitric oxide（NO）Generation, NO oxidisability is compared with NO2It is weak, by contrast, NO2Easily participate in combustion reaction；
Another N2O4Waste liquid has severe corrosive, is strong oxidizer, if defect occurs in dividing wall type gasifier weld seam in use, heat exchange it is cold,
Hot two fluids may be in contact, and will produce great potential safety hazard, in order to avoid NO is generated, thoroughly prevent unsafe factor,
Therefore the heat carrier of above-mentioned gasifier is done using water, rather than organic heat carrier.Such as gasifier entrance hot water temperature is low, gasifier face
Product is big, and heat exchange efficiency is low；Such as gasifier entrance hot water temperature is too high, and the speed of water volatilization is fast, therefore gasifier entrance is circulated
The temperature setting of water is 40 DEG C~70 DEG C；The temperature setting of gasifier exit recirculated water is 30 DEG C~60 DEG C.
NO after above-mentioned gasification2And N2Mixed gas concentration（With NO2Meter）For 1%~50%, actual control is being less than 30%
Preferably, burning is violent in excessive concentration incinerator, causes fire box temperature higher, shortens the service life of incinerator refractory lining, this
In NO2It is verified in burned waste gas processing.Dinitrogen tetroxide, nitrogen dioxide after gasifier exit gasification are mixed with nitrogen
30 DEG C~50 DEG C of the temperature of gas.
The burner of above-mentioned incinerator is non-premixed, on the basis of the amount of fuel, and combustion process is divided into two-stage supplying,
First order oxidant（Air+NO2Gaseous mixture）Coefficient is controlled in 0.6~0.95, NO2CO, CO are generated with fuel reaction2、H2O and
N2；Second level air coefficient >=1.1, in removing NO2Remaining fuel and CO are burnt completely afterwards, arranged by the chimney higher than 15m
Put.
The fuel of above-mentioned incinerator is coal gas, natural gas, liquefied gas, kerosene, diesel oil, methanol, ethanol, low-carbon alcohols etc., stove
The ignition temperature control of thorax is advisable at 800 DEG C~1300 DEG C, the nitric oxide that temperature is crossed in high exhaust gas（NO）There is increased trend.
About burning furnace structure and working condition, refer to Chinese patent CN1086598C, CN1114464C, CN1102419,
Record in CN2400695Y documents.
In the utility model, the material that equipment is in contact with medium is from resistance to nitric acid or the austenite of resistance to nitrous acid corrosion
Stainless steel.
Claims (5)
1. a kind of processing unit of dinitrogen tetroxide spent liquor, it is characterised in that：Including dinitrogen tetroxide spent liquor tank, gasifier, follow
Ring water tank, incinerator, the dinitrogen tetroxide spent liquor tank connect air and liquid mixer, air and liquid mixer and gasifier by pipeline
Top is connected, gasifier and recirculated water water tank one circulation loop of formation, and electrical heating elements are provided with the middle part of circulation water tank；Gasification
Device bottom connects incinerator, and incinerator side is provided with fuel inlet, and opposite side, which is provided with the top of chimney, incinerator, is provided with auxiliary air
Entrance.
2. the processing unit of dinitrogen tetroxide spent liquor according to claim 1, it is characterised in that：The gasifier is tubulation
One kind in heat exchanger, spiral coil heat exchanger, floating head heat exchanger, heat exchange of heat pipe, using recirculated water as heat carrier.
3. the processing unit of dinitrogen tetroxide spent liquor according to claim 1, it is characterised in that：The air and liquid mixer point
Not Lian Jie dinitrogen tetroxide spent liquor tank and nitrogen pipeline, on the pipeline that dinitrogen tetroxide spent liquor tank is connected with air and liquid mixer respectively
Provided with N2O4Valve, N2O4Flowmeter, N2O4N is respectively equipped with check-valves, nitrogen pipeline2Valve, N2Flowmeter, N2Check-valves.
4. the processing unit of dinitrogen tetroxide spent liquor according to claim 1, it is characterised in that：The dinitrogen tetroxide gives up
Flow container is connected with nitrogen pipeline.
5. the processing unit of dinitrogen tetroxide spent liquor according to claim 1, it is characterised in that：Set in the outlet of gasifier
There is pressure sensor, interlocked with the check-valves on dinitrogen tetroxide pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203635.0U CN206563303U (en) | 2017-03-03 | 2017-03-03 | A kind of processing unit of dinitrogen tetroxide spent liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203635.0U CN206563303U (en) | 2017-03-03 | 2017-03-03 | A kind of processing unit of dinitrogen tetroxide spent liquor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206563303U true CN206563303U (en) | 2017-10-17 |
Family
ID=60030268
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720203635.0U Expired - Fee Related CN206563303U (en) | 2017-03-03 | 2017-03-03 | A kind of processing unit of dinitrogen tetroxide spent liquor |
Country Status (1)
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| CN (1) | CN206563303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765209A (en) * | 2017-03-03 | 2017-05-31 | 中国人民解放军63729部队 | The processing unit and method of a kind of dinitrogen tetroxide spent liquor |
-
2017
- 2017-03-03 CN CN201720203635.0U patent/CN206563303U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765209A (en) * | 2017-03-03 | 2017-05-31 | 中国人民解放军63729部队 | The processing unit and method of a kind of dinitrogen tetroxide spent liquor |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20200303 |