CN109243655A - A kind of device and method of research post-processing organic phase ignition behavior - Google Patents
A kind of device and method of research post-processing organic phase ignition behavior Download PDFInfo
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- CN109243655A CN109243655A CN201811108154.7A CN201811108154A CN109243655A CN 109243655 A CN109243655 A CN 109243655A CN 201811108154 A CN201811108154 A CN 201811108154A CN 109243655 A CN109243655 A CN 109243655A
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- flue gas
- organic phase
- ignition behavior
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/007—Recovery of isotopes from radioactive waste, e.g. fission products
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention provides a kind of device and method of research post-processing organic phase ignition behavior, and described device includes: the constant flow pump and flue gas analysis module, combustion chamber, the Weighing module positioned at combustion chamber inside bottom and the temperature test module on the central axes of combustion chamber for being respectively arranged at flue gas outlet and air inlet；The Weighing module includes combustion cell, igniter, pressure sensor, thermal insulation layer and pressure data collector；The temperature test module includes at least 3 groups of thermocouples and temperature data acquisition device.Device and method provided by the invention can obtain the relevant rudimentary parameter of organic phase ignition behavior, can provide gross data for the safe design of reprocessing plant and the precautionary measures of fire incident and support.
Description
Technical field
The invention belongs to nuclear technology fields, and in particular to it is a kind of research post-processing the behavior of organic phase ignition device and
Method.
Background technique
Spentnuclear fuel reprocessing plant is the recycling for realizing nuclear fuel, and is conducive to the processing of nuclear waste properly disposed
Factory is an important link for realizing nuclear fuel closed cycle.Pulsed column is also known as extraction column in reprocessing plant, can be by spentnuclear fuel
Uranium and plutonium, are separated by way of extraction in lysate, are links particularly important in post-processing.Solution in pulsed column
It is made of kerosene-TBP mixed solvent and nitric acid/nitrate solution.
Assuming that cut occurs in pulsed column, internal solution is all leaked, and encountering fire source or reaching certain temperature just can ignite.
Due to narrow space, once fire occurs, ambient temperature can be risen rapidly, and will directly or indirectly destroy security-related build
Object, system and component are built, such as combustible material (such as hydrogen, dissolution hydrazine) causes secondary destruction in the reprocessing plant that ignites.And in height
Temperature, under narrow environment, oxygen is insufficient, causes the imperfect combustion of organic solvent, will generate fuel gas, fuel gas
Other workshops of diffusion couple cause security risk.The Combustion Energy of the organic phase directly or indirectly destroys security-related building
Object, system and component, and its extent of the destruction depends on the burning behavior of organic phase.
Therefore, it is necessary to invented it is a kind of research post-processing the behavior of organic phase ignition device and method, to its into
Row in-depth study obtains the relevant rudimentary parameter of organic phase ignition behavior, can be the safe design and fire of reprocessing plant
The precautionary measures of calamity accident provide gross data and support.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of research post-processing organic phase kindling combustions
The device and method of burning behavior can obtain the relevant rudimentary parameter of organic phase ignition behavior, can be the peace of reprocessing plant
The precautionary measures of full design and fire incident provide gross data and support.
To achieve the above objectives, the technical solution adopted by the present invention is that: a kind of research post-processes organic phase ignition row
For device, described device include: be respectively arranged at flue gas outlet and air inlet constant flow pump and flue gas analysis module,
Combustion chamber, the Weighing module positioned at combustion chamber inside bottom and the temperature test module on the central axes of combustion chamber；
The Weighing module includes combustion cell, igniter, pressure sensor, thermal insulation layer and pressure data collector；
The temperature test module includes at least 3 groups of thermocouples and temperature data acquisition device.
Further, the combustion cell memory puts organic solvent layer or organic solvent layer and inorganic liquid phase layer, described organic
It is placed with thermocouple in solvent layer and inorganic liquid phase layer, remaining thermocouple is evenly distributed on the central axes of combustion chamber.
Further, described device further includes vent gas treatment module, and the vent gas treatment module is set to the flue gas point
It analyses between module and constant flow pump.
Further, the flue gas analysis module includes flue gas analysis probe and online flue gas analyzer.
Further, combustion cell is replaceable in described device, and each combustion cell burning area is different.
Further, described device further includes pipeline valve, and the pipeline valve is set to combustion chamber exterior bottom.
The another technical solution that the present invention uses is: a method of research post-processing organic phase ignition behavior,
It the described method comprises the following steps:
(1) take the predetermined solution of preset vol that combustion cell is added；
(2) predetermined solution, cracking pressure data collector and temperature data acquisition device are lighted, online flue gas analysis is run
Instrument；
(3) start constant flow pump, be adjusted to preset flow rate；
(4) test data is recorded.
Further, predetermined solution be with heterogeneity different volumes than the organic solvent layer or organic solvent layer that are made into and
Inorganic liquid phase layer, organic solvent layer include kerosene and TBP, and inorganic liquid phase layer includes nitric acid solution or nitrate solution.
Further, the experimental variable of the method is preset flow rate, burning pool size and predetermined solution.
Further, the test parameter of the method includes combustion cell quality, flue-gas temperature and predetermined solution temperature, flue gas
Concentration and its each component concentration.
Effect of the invention is that organic phase ignition row can be obtained using device and method of the present invention
For relevant rudimentary parameter, gross data can be provided for the safe design of reprocessing plant and the precautionary measures of fire incident and supported.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of device of the present invention；
Fig. 2 is the Technology Roadmap of one embodiment of the method for the invention；
Fig. 3 is the flow diagram of one embodiment of the method for the invention.
In figure: 1- constant flow pump；2- exhaust gas processing device；3- flue；4- thermocouple；5- temperature data acquisition device；6-
Pipeline valve；7- flue gas analyzer probe；The combustion chamber 8-；9- pressure data collector；The online flue gas analyzer of 10-；11- igniting
Device；12- combustion cell；13- organic solvent layer；The inorganic liquid phase layer of 14-；15- thermal insulation layer；16- pressure sensor.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will the technical scheme of the embodiment of the invention will be described in further detail in conjunction with attached drawing.Obviously, described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to the scope of protection of the invention.
As shown in fig.1, Fig. 1 is the structural schematic diagram of one embodiment of device of the present invention.Described device includes: difference
It is set to the constant flow pump 1 of 3 gas outlet of flue and air inlet and flue gas analysis module, combustion chamber 8, is located at the inside of combustion chamber 8
Bottom Weighing module and the temperature test module on 8 central axes of combustion chamber.
The Weighing module includes combustion cell 12, igniter 11, pressure sensor 16, thermal insulation layer 15 and pressure data acquisition
Device 9.(nitric acid solution or nitrate are molten for storing organic solvent (kerosene, TBP) or organic solvent and inorganic solution for combustion cell 12
Liquid).
In a specific embodiment, organic solvent is only stored in combustion cell 12, organic solvent includes kerosene and TBP.
In other embodiments, organic solvent and inorganic solution are stored in combustion cell 12 simultaneously.Wherein, organic solvent include kerosene and
TBP, inorganic solution include nitrate solution or nitric acid solution.
Igniter 11 is used to light the organic solution in combustion cell 12.Combustion cell 12 can be measured by pressure sensor 16
Mass change to analyzing burn rate.Thermal insulation layer 15 avoids high temperature pair for completely cutting off combustion cell 12 and pressure sensor 16
Pressure sensor 16 has an impact, and pressure data collector 9 for recording the mass change of combustion cell 13 in real time.
The temperature test module includes at least 3 groups of thermocouples 4 and temperature data acquisition device 5.
12 memory of combustion cell puts organic solvent layer 13 and inorganic liquid phase layer 14, the organic solvent layer 13 and inorganic-liquid
Thermocouple 4 is placed in phase layer 14, remaining thermocouple 4 is evenly distributed on the central axes of combustion chamber 8.
Preferably, described device includes 6 thermocouples 4.Wherein two groups of thermocouples 4 are respectively used to acquisition organic solvent layer 13
(Org) it is evenly distributed on the central axes of combustion chamber 8 with the temperature of inorganic liquid phase layer 14 (Acq), remaining 4 groups of thermocouple 4, temperature
Data collector 5 for recording the temperature conditions of 6 groups of thermocouple assays in real time.
Described device further includes vent gas treatment module 2, the vent gas treatment module 2 be set to the flue gas analysis module and
Between constant flow pump 1.Flue gas reaches atmospheric emission standard and is discharged into air after the processing of vent gas treatment module 2.
The flue gas analysis module includes flue gas analysis probe 7 and online flue gas analyzer 10.Flue gas analysis is visited in experiment
Needle 7 carries out sampling dilution to through the flue gas in piping with certain sampling rate, then is continued by online flue gas analyzer 10
Analyze flue gas concentration.Online flue gas analyzer 10 includes particulate matter, volatile organic matter, nitrogen oxides, carbon monoxide, titanium dioxide
The concentration of each component of flue gas can be monitored in real time in the monitoring unit such as carbon.
Combustion cell 12 is replaceable in described device, and 12 burning area of each combustion cell is different.Combustion cell 12 is upward opening
Container, burning area be opening area.
Described device further includes pipeline valve 6, and the pipeline valve 6 is set to 8 exterior bottom of combustion chamber, for controlling sky
Gas enters.
Described device experiment flow is that solution to be measured is added in combustion cell 12, and igniter 11 lights solution to be measured, in perseverance
The pumping pressure of stream pump 1, air flowing in combustion chamber 8, while the flue gas in combustion chamber 8 is driven, into flue 3, at tail gas
Device 2 is managed, it is final to be discharged.In experimentation, pressure data collector 9 records the mass change of combustion cell 12 in real time, until
Fray-out of flame；Temperature data acquisition device 5 records the temperature change of solution and flue gas to be measured in real time；Online flue gas analyzer 10 is in real time
Monitor the concentration variation of each component in flue gas.
It is different from the prior art, a kind of device of research post-processing organic phase ignition behavior provided by the invention should
Device is compact to design, can obtain the relevant rudimentary parameter of organic phase ignition behavior, can be the safe design of reprocessing plant
Gross data is provided with the precautionary measures of fire incident to support.
It is the Technology Roadmap of one embodiment of the method for the invention refering to Fig. 2-3, Fig. 2, Fig. 3 is the method for the invention
The flow diagram of one embodiment.It the described method comprises the following steps:
Step 101: taking the predetermined solution of preset vol that combustion cell is added.
Further include checking related equipment before on-test, checks whether normal.
Take the predetermined solution of preset vol that combustion cell is added.Predetermined solution is to have with heterogeneity different volumes than what is be made into
Solvent layer or organic solvent layer and inorganic liquid phase layer, organic solvent layer include kerosene and TBP, and inorganic liquid phase layer includes that nitric acid is molten
Liquid or nitrate solution.
In a specific embodiment, predetermined solution are as follows: organic solvent layer by 30% volume TBP and 70% kerosene
It constitutes, inorganic liquid phase layer concentration of nitric acid is 0.1mol/L-5mol/L, and organic solvent layer/inorganic-liquid Phase Proportion is 1:1.At other
In embodiment, organic solvent layer/inorganic-liquid Phase Proportion can also be 1:2 or 2:1.
Step 102: lighting predetermined solution, cracking pressure data collector and temperature data acquisition device, run online flue gas
Analyzer.
Step 103: starting constant flow pump is adjusted to preset flow rate.
In order to simulate under different airflow rates, to burn rate, solution temperature, flue-gas temperature and flue gas release behavior shadow
It rings, constant flow pump is adjusted to preset flow rate.
Step 104: record test data.
During the experiment, test data is recorded in real time, is specifically included: when predetermined solution is pressed in burning in combustion cell
Force data collector records the mass change of combustion cell in real time, until fray-out of flame；Temperature data acquisition device records molten in real time
The temperature change of liquid and flue gas；The concentration variation of each component in online flue gas analysis real time monitoring flue gas.
Method provided by the invention is the experimental method for post-processing organic phase burning.The experimental variable of the method is
Preset flow rate, burning pool size and predetermined solution.Variable gas flow rate, which passes through, adjusts constant current pump power, generates different gas
Flow velocity；Variable burning pool size is to carry out experiment test using the container of different burning areas；Variable predetermined solution (Org/Acq)
Carry out the experimental study of the solution of heterogeneity proportion.
The test parameter of the method include combustion cell quality, flue-gas temperature and predetermined solution temperature, flue gas concentration and its
Each component concentration.By the variation to combustion cell quality, the burn rate of solution can be calculated；To smoke components test data into
The rule of flue gas release can be obtained in row induction and conclusion；By to multiple groups temperature data, combustion cell mass change data and flue gas at
The analysis of divided data, can summarize the mechanism of organic phase burning, and estimate the release of combustion process heat flow.By counting above
Temperature Distribution and flue gas releasing theory are established according to final.
It is as follows that content specifically can analyze using method provided by the invention: (1) under different airflow rates, to burning speed
The influence of rate, solution temperature, flue-gas temperature and flue gas release behavior；(2) different burning pool sizes, to burn rate, solution temperature
The influence of degree, flue-gas temperature and flue gas release behavior；(3) under different predetermined solutions (Org/Acq) match, to burn rate, molten
The influence of liquid temperature, flue-gas temperature and flue gas release behavior.
It is different from the prior art, a kind of method of research post-processing organic phase ignition behavior provided by the invention, energy
The relevant rudimentary parameter of organic phase ignition behavior is enough obtained, can be the safe design of reprocessing plant and the prevention of fire incident
Measure provides gross data and supports.
It will be understood by those skilled in the art that device and method of the present invention are not limited to institute in specific embodiment
The embodiment stated, specific descriptions above are intended merely to explain the purpose of the present invention, are not intended to limit the present invention.This field skill
Art personnel can derive other implementation manners according to the technical scheme of the present invention, and also belong to the scope of the technical innovation of the present invention, this
The protection scope of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of device of research post-processing organic phase ignition behavior, which is characterized in that described device includes: to be respectively set
In the constant flow pump and flue gas analysis module of flue gas outlet and air inlet, combustion chamber, positioned at the title of combustion chamber inside bottom
Molality block and the temperature test module on the central axes of combustion chamber；
The Weighing module includes combustion cell, igniter, pressure sensor, thermal insulation layer and pressure data collector；
The temperature test module includes at least 3 groups of thermocouples and temperature data acquisition device.
2. a kind of device of research post-processing organic phase ignition behavior according to claim 1, which is characterized in that
The combustion cell memory puts organic solvent layer or organic solvent layer and inorganic liquid phase layer, the organic solvent layer and inorganic-liquid
Thermocouple is placed in phase layer, remaining thermocouple is evenly distributed on the central axes of combustion chamber.
3. a kind of device of research post-processing organic phase ignition behavior according to claim 1, which is characterized in that
Described device further includes vent gas treatment module, and the vent gas treatment module is set to the flue gas analysis module and constant flow pump
Between.
4. a kind of device of research post-processing organic phase ignition behavior according to claim 1, which is characterized in that
The flue gas analysis module includes flue gas analysis probe and online flue gas analyzer.
5. a kind of device of research post-processing organic phase ignition behavior according to claim 1, which is characterized in that
Combustion cell is replaceable in described device, and each combustion cell burning area is different.
6. a kind of device of research post-processing organic phase ignition behavior according to claim 1, which is characterized in that
Described device further includes pipeline valve, and the pipeline valve is set to combustion chamber exterior bottom.
7. a kind of method of research post-processing organic phase ignition behavior, which is characterized in that the described method comprises the following steps:
(1) take the predetermined solution of preset vol that combustion cell is added；
(2) predetermined solution, cracking pressure data collector and temperature data acquisition device are lighted, online flue gas analyzer is run；
(3) start constant flow pump, be adjusted to preset flow rate；
(4) test data is recorded.
8. a kind of method of research post-processing organic phase ignition behavior according to claim 7, which is characterized in that default
Solution is the organic solvent layer or organic solvent layer and inorganic liquid phase layer with heterogeneity different volumes than being made into, organic solvent layer
Including kerosene and TBP, inorganic liquid phase layer includes nitric acid solution or nitrate solution.
9. a kind of method of research post-processing organic phase ignition behavior according to claim 7, which is characterized in that described
The experimental variable of method is preset flow rate, burning pool size and predetermined solution.
10. a kind of method of research post-processing organic phase ignition behavior according to claim 7, which is characterized in that institute
Stating method testing parameter includes combustion cell quality, flue-gas temperature and predetermined solution temperature, flue gas concentration and its each component concentration.
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Cited By (3)
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| CN110059347A (en) * | 2019-03-11 | 2019-07-26 | 中国辐射防护研究院 | The experiment research platform and method of fire incident in a kind of simulation reprocessing facility |
| CN112614604A (en) * | 2020-11-26 | 2021-04-06 | 中国辐射防护研究院 | Pulse extraction column organic phase ignition accident source item estimation method |
| CN112666049A (en) * | 2020-11-24 | 2021-04-16 | 中国辐射防护研究院 | Platform and method for simulating multi-compartment transportation of aerosol in post-treatment fire accident |
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