CN106782732A - The degasser and method of gaseous impurity in nuclear power plant reactor radioactive liquid waste - Google Patents

The degasser and method of gaseous impurity in nuclear power plant reactor radioactive liquid waste Download PDF

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Publication number
CN106782732A
CN106782732A CN201611158852.9A CN201611158852A CN106782732A CN 106782732 A CN106782732 A CN 106782732A CN 201611158852 A CN201611158852 A CN 201611158852A CN 106782732 A CN106782732 A CN 106782732A
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China
Prior art keywords
tower
degassing
gas
nuclear power
degassing tower
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CN201611158852.9A
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Chinese (zh)
Inventor
潘跃龙
霍明
兰立君
盛成
杨林君
刘勇
张裕嘉
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China General Nuclear Power Corp
China Nuclear Power Engineering Co Ltd
Shenzhen China Guangdong Nuclear Engineering Design Co Ltd
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China General Nuclear Power Corp
China Nuclear Power Engineering Co Ltd
Shenzhen China Guangdong Nuclear Engineering Design Co Ltd
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Application filed by China General Nuclear Power Corp, China Nuclear Power Engineering Co Ltd, Shenzhen China Guangdong Nuclear Engineering Design Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201611158852.9A priority Critical patent/CN106782732A/en
Publication of CN106782732A publication Critical patent/CN106782732A/en
Priority to PCT/CN2017/116056 priority patent/WO2018108119A1/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/02Treating gases
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04Treating liquids
    • G21F9/06Processing

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses a kind of degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste, it includes:Degassing tower, for receiving nuclear power plant reactor radioactive liquid waste and removing the gas dissolved in waste liquid, there are degassing tower overhead gas to export and tower reactor liquid outlet;It is connected with degassing tower and condenser downstream, is condensed for the gas to degassing tower overhead extraction;The vavuum pump being connected with condenser, for extracting out and compresses by the condensed gas of condenser and uncooled water vapour, to maintain operating pressure required in tower;And the moisture trap being connected with vavuum pump, for separating gas and water, gas is removed.Additionally, the invention also discloses a kind of degassing method of gaseous impurity in nuclear power plant reactor radioactive liquid waste.The degasser and method of gaseous impurity use negative pressure degasification in nuclear power plant reactor radioactive liquid waste of the present invention, easy to operate, safe and reliable, even if system occurs also can guarantee that system safety during leakage.

Description

The degasser and method of gaseous impurity in nuclear power plant reactor radioactive liquid waste
Technical field
The invention belongs to technical field of nuclear power, it is more particularly related to a kind of nuclear power plant reactor Spent Radioactive The degasser and method of gaseous impurity in liquid.
Background technology
The hydrogen and various radgas produced by production run are there is in nuclear power plant reactor radioactive liquid waste, is put Gas in penetrating property waste liquid is mostly harmful to:Hydrogen is inflammable and explosive gas, when density of hydrogen is exceeded, there is risk of explosion, Radgas can be to human body and environmental concerns.Therefore, it is necessary to miscellaneous to gas present in reactor radioactive liquid waste Matter is removed.
In order to remove the hydrogen and radioactive fission gas in nuclear power plant reactor primary Ioops, primary Ioops water quality is set to meet core Power station service requirement is, it is necessary to set degasser, the directly or indirectly operation by degasser during running excludes one Hydrogen and radioactive fission gas in loop, so as to reduce its content to meet nuclear power station service requirement.
In existing nuclear power technology, certain degasifying effect can be reached using the degasser of malleation, but have the following disadvantages: , it is necessary to a large amount of nitrogen are purged to device and pipeline to reduce the oxygen concentration in device in start-up course, therefore, need to increase Plus substantial amounts of control logic and corollary equipment are used to coordinate completion degasification process;Start-up course is complicated, and system failure rate is higher, drop The availability of low system;The process variable that operator's needs are intervened is more, and automaticity is low;Due to being malleation degassing, in order to reach The saturation state of cooling agent, in degasification process, in addition it is also necessary to which consuming substantial amounts of heat makes cooling agent reach saturation state, evaporation Cooling agent is also required to heat exchanger cooling and carries out air cooling and condensing reflux;Additionally, also needing to consider the quick-fried measure of anti-hydrogen, extra setting up is needed The devices such as density of hydrogen measuring instrumentss, are used to measure the density of hydrogen of factory building and all valves and meter section.
Although the degasser technique calibration pressure-off device of air using vavuum pump negative pressure is simple, some defects are there is also: During degasser runs, in order to ensure density of hydrogen of the device under any operating mode in (including leakage) device less than blast The limit, it is necessary to the moment ensure there is substantial amounts of nitrogen to purge degasser, now, except be equipped with associated gas pipeline in addition to, The substantial amounts of carrier gas of configuration has also been needed to be used to coordinate related process to operate;The a large amount of nitrogen being passed through in device increased the stream of vavuum pump Amount, so as to increased the volume of overall vacuum unit;Increased the potential gaseous effluent discharge capacity of nuclear power station.
In view of this, it is necessory to provide a kind of energy-conservation, efficiently, safety nuclear power plant reactor radioactive liquid waste in gas The degasser and method of impurity.
The content of the invention
It is an object of the invention to:Gas in a kind of energy-conservation, nuclear power plant reactor radioactive liquid waste efficiently, safe is provided The degasser and method of impurity.
In order to realize foregoing invention purpose, the invention provides gaseous impurity in a kind of nuclear power plant reactor radioactive liquid waste Degasser, it includes:
Degassing tower, for receiving nuclear power plant reactor radioactive liquid waste and removing the gas dissolved in waste liquid, degassing tower tool There are overhead gas to export and tower reactor liquid outlet;
It is connected with degassing tower and condenser downstream, is carried out for the gas to degassing tower overhead extraction cold It is solidifying;
The vavuum pump being connected with condenser, for extracting out and compresses by the condensed gas of condenser and uncooled Water vapour, to maintain operating pressure required in tower;And
The moisture trap being connected with vavuum pump, for separating gas and water, gas is removed.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described useless Gaseous impurity in liquid includes hydrogen and/or radgas.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, the gas Separator includes the gas vent at top and the water out of bottom.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, the water Outlet is connected with the condensed water elimination that will isolate to downstream treatment systems with condensate discharge pump.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described cold A sealing water cooler is provided between lime set emptying pump and the vavuum pump, for being the condensed water heat exchange after degassing.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described close Water shutoff cooler includes a sealing water out and a sealing water inlet, and sealing water out is connected with by after heat exchange with vavuum pump Sealing water supply is to vavuum pump.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described de- Device of air also includes being connected with the degassing tower and a cooling agent delivery pump downstream, for conveying degassing tower tower reactor The cooling agent for being stripped of gaseous impurity.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described de- Device of air also includes that the cooling agent for being connected with the degassing tower and being connected on a pipeline with the cooling agent delivery pump is followed Ring pump, for the circulating liquid for needed for degassing tower delivery heat transfer.
Improved as a kind of of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described cold But electric heater is provided between agent circulating pump and the degassing tower, for being heated to be transported to the cooling agent of degassing tower, is made The liquid entered into degassing tower evaporated needed for heat.
It is miscellaneous present invention also offers gas in a kind of nuclear power plant reactor radioactive liquid waste in order to realize foregoing invention purpose The degassing method of matter, it is comprised the following steps:
1) nuclear power plant reactor radioactive liquid waste is conveyed into degassing tower carries out parsing separation, and radioactive liquid waste is in filler Gas-liquid separation is realized after heat exchange;
2) with condenser to being cooled down from the gas of degassing tower overhead extraction, the liquid backflow that condensed device is condensed out To in degassing tower, proceed degassing;
3) condenser and degassing tower are evacuated using vavuum pump, and the gas from condensator outlet out is compressed;
4) the air-water mixture feeding moisture trap for exporting vavuum pump is separated;
5) by the incoagulable gas at the top of moisture trap from top vent fed downstream system treatment, moisture trap The condensed water for condensing out is pumped into down-stream system and processes by condensate discharge;And
6) the tower reactor cooling agent after degassing tower is deaerated is conveyed by tower reactor cooling agent and is pumped into down-stream system treatment.
Improved as a kind of of the degassing method of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, the step It is rapid 1) in, when degassing tower is de-gassed, control tower reactor pressure for 7kPa~13.5kPa, temperature is 39 DEG C~51.8 DEG C.
Improved as a kind of of the degassing method of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, described Step 5) after also include by the condensed water by condensate discharge be pumped into sealing water cooler exchange heat.
Improved as a kind of of the degassing method of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, it is described de- Gas method also includes for the sealing water after the heat exchange being delivered to vavuum pump, and the pressure that sealing water enters vavuum pump is less than vavuum pump The operating pressure at suction inlet end.
Improved as a kind of of the degassing method of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention, described Step 6) after also include by the tower reactor cooling agent by circulation be pumped into electric heater heat after send into degassing tower in.
Compared with prior art, in nuclear power plant reactor radioactive liquid waste of the present invention gaseous impurity degasser and method With advantages below:(1) usage amount of carrier gas is reduced, for nuclear power station, the discharge capacity of radgas is reduced; (2) heat for only needing supplement a small amount of in degasification process can just make waste liquid reach saturation state, save waste liquid and reach saturation shape Energy required for state;(3) device and pipeline need not be purged using nitrogen, saves the discharge capacity of nitrogen;(4) adopt Negative pressure degasification technique is used, the vacuum needed for system is provided using conventional corollary equipment liquid-ring vacuum pump can just complete degassing Process, saves construction cost;(5) present invention process is simple, easy to operate, high degree of automation, degassing safety, when system goes out When now leaking cut, system safety is still ensured that.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, to gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention Degasser and method are described in detail, wherein:
Fig. 1 is the schematic diagram of the degasser of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention.
Specific embodiment
In order that goal of the invention of the invention, technical scheme and its Advantageous Effects become apparent from, below in conjunction with accompanying drawing And specific embodiment, the present invention will be described in further detail.It should be appreciated that the specific reality described in this specification Mode is applied just for the sake of explaining the present invention, is not intended to limit the present invention.
Refer to shown in Fig. 1, the degasser of gaseous impurity includes in nuclear power plant reactor radioactive liquid waste of the present invention:It is de- Gas tower 10, the condenser 20 being connected with the overhead extraction pipeline of degassing tower 10, wherein, the outlet line of condenser 20 is provided with vavuum pump 30, and the moisture trap 40 connected with the outlet line of vavuum pump 30.
Degassing tower 10 is used for the gas for receiving nuclear power plant reactor radioactive liquid waste and being dissolved in removing waste liquid, degassing tower 10 Be packed tower, liquid distribution trough (not shown) be provided with tower, be provided with tower display tower reactor pressure pressure gauge (not shown) and Show bottom temperature temperature sensor (not shown), degassing tower 10 have overhead gas outlet 102, tower reactor liquid outlet 104, The circulating coolant entrance 110 of radioactive liquid waste inlet port 106, condenser reflux condensate inlet 108 and tower reactor.In diagram In implementation method, the pressure of degassing tower 10 is controlled for 12.5kPa, temperature is 50 DEG C;Radioactive liquid waste enters in degassing tower 10 The filler entered in tower after liquid distribution trough, is met with the steam for rising in filler, and gas-liquid mass transfer is carried out in contact process, Gas in waste liquid will be dissolved in by steam, such as hydrogen and radgas are taken away and is passed up to tower top, so as to realize The degasification process of waste liquid.
Condenser 20 is water cooled condenser, and overhead extraction gas is condensed as cold medium with chilled water, in figure Show in implementation method, gas not being coagulated and being extracted out from condensator outlet 206, the condensate liquid for condensing out is due to being dissolved with remaining gas Again degassing tower top is back to, proceeds degassing, the boiling point temperature of temperature control liquid in degassing tower of refluxer Degree, to prevent the gas for separating out from dissolving again in a liquid, finally makes hydrogen and radgas in radioactive liquid waste continuous Removing, and control prevent hydrogen explosion by uncooled quantity of steam after condenser 20.
Vavuum pump 30 is liquid-ring vacuum pump, and one end connects condensator outlet 206 by pipeline, for providing power, is extracted out And compress by the condensed gas of condenser 20 and uncooled water vapour, operating pressure required in tower is maintained, from condensation The uncooled steam out of device 20 is sent to moisture trap 40 and is separated after the condensation of the compression condensation of vavuum pump 30, not cold Solidifying steam additionally aids vavuum pump 30 and improves exhaust capacity;The pipeline of the front end of vacuum pump inlet 302 is provided with gas sample mouthful (not shown), for detecting the concentration into hydrogen in vavuum pump 30, flow is additionally provided with the front-end pipeline of vacuum pump inlet 302 Regulating valve (not shown), for controlling the concentration into hydrogen in vavuum pump 30, makes into the mixed gas of vavuum pump 30, hydrogen The volumetric concentration of gas under explosion limit, so as to reach the explosion-proof control purpose of hydrogen.
Moisture trap 40 is connected with the outlet line of vavuum pump 30, for separating by the gas after the compression of vavuum pump 30 And water, moisture trap 40 be provided with top gas vent 406 and bottom water out 404, the on-condensible gas after separation, such as hydrogen Gas and radgas are post-processed from the discharge of gas vent 406, and the water after separation is after the water out 404 of bottom is sent into Continuous workshop section is processed, and finally realizes the degasification process of whole degasser.
The pipeline of water out 404 of the bottom of moisture trap 40 is provided with condensate discharge pump 50, for the row for condensed water Offer power is put, while for the heat exchange of condensed water provides power.
Condensate discharge pump 50 is connected with vavuum pump 30, and the condensed water that moisture trap 40 is isolated is supplied to very Empty pump 30 is reused.A preferred embodiment of the invention, one is set in the downstream of condensate discharge pump discharge Sealing water cooler 60, to cool down the water being separated, sealing water cooler 60 provides low-temperature receiver using component cooling water.
Degassing tower tower reactor exports 104 line downstreams and is provided with cooling agent delivery pump 70, after conveying the separation of degassing tower 10 Tower reactor cooling agent.
The one end of circulating pump 80 connects degassing tower tower reactor and exports 104 by pipeline, and the other end connects degassing tower 10 by pipeline On circulating coolant entrance 110, for the circulating liquid for needed for the delivery heat transfer of degassing tower 10.
Electric heater 90 is arranged on the pipeline between circulating pump 80 and degassing tower 10, for be transported to degassing tower 10 Cooling agent is heated, the heat needed for being evaporated the liquid entered into degassing tower 10.
Please continue to refer to shown in Fig. 1, the degassing method mistake of gaseous impurity in nuclear power plant reactor radioactive liquid waste of the present invention Journey is as follows:
After each device is connected by pipeline, after measurement motor insulation is qualified, the chilled water of condenser 20 is opened, will condensed Device 20 comes into operation.
The water of a certain amount of not hydrogen and radgas, tower in tower to be de-gassed 10 are input into degassing tower 10 by pipeline After the liquid of kettle reaches certain liquid level, start circulating pump 80 and be circulated, then start electric heater 90, adjust electric heater 90 Heating-up temperature circulation fluid is heated, and start vavuum pump 30 and be evacuated, while moisture trap 40 is come into operation.
Radioactive liquid waste is input into degassing tower 10, and starts cooling agent delivery pump 70 and tower reactor cooling agent is conveyed, it is defeated The rate of discharge of cooling agent delivery pump 70 is controlled during sending, tower reactor liquid level is maintained.
The tower reactor pressure of degassing tower 10 to 12.5kPa is gradually adjusted by vavuum pump 30, the temperature of degassing tower 10 to 50 DEG C, The steam that radioactive liquid waste rises through tower reactor in heat exchange in filler after can all seethe with excitement substantially, the gas dissolved in waste liquid is big Out, the gas for parsing enters condenser 20, the pressure of tower to be de-gassed 10 and temperature to part analysis from degassing tower tower top outlet 102 After degree stabilization, the temperature of the chilled water of condenser 20 is adjusted, the temperature for controlling the condensate liquid being back in degassing tower 10 is degassing tower The boiling temperature of liquid in 10, to prevent the gas for separating out from dissolving again in a liquid;And timing is by before condenser inlet 202 Gas sample mouthful sampling (not shown) on the pipeline at end, the density of hydrogen in detection degassing tower 10, by adjusting each device Density of hydrogen in operation power assurance degassing tower 10 is below explosion limit.
It is compressed by vavuum pump 30 from the gas out of condenser 20, the gas-liquid mixture feeding air water point after compression Gas-liquid separation is carried out from device 40, on-condensible gas is discharged by the outlet gas line of moisture trap 40 and processed, when air water point After reaching certain liquid level from the condensed water of the bottom of device 40, condensate discharge pump 50 is opened, in discharge and conveying moisture trap Condensed water, the rate of discharge of control condensate discharge pump 50, maintains the liquid level of moisture trap.Sealing water cooler 60 is put into Use, the temperature of the regulation sealing low-temperature receiver of water cooler 60, and control to seal water into the pressure of vavuum pump 30 less than vavuum pump 30 The operating pressure at suction inlet end;Timing is used by the gas sample mouthful sampling (not shown) in the front-end pipeline of vacuum pump inlet 302 To detect the concentration into hydrogen in vavuum pump, while (not schemed by the flow control valve in the front-end pipeline of vacuum pump inlet 302 Show) come control enter vavuum pump in hydrogen concentration, make enter vavuum pump 30 mixed gas in, the volumetric concentration of hydrogen is quick-fried Under the fried limit, so as to reach the explosion-proof control purpose of hydrogen.
It should be noted that the degasser of gaseous impurity can not only take off in nuclear power plant reactor radioactive liquid waste of the present invention Except hydrogen and radgas in nuclear power plant reactor radioactive liquid waste, and can also be used to the degassing to general liquid, Oxygen, nitrogen other gases are such as removed, with wide applicability.
Detailed description to embodiment of the present invention with reference to more than can be seen that relative to prior art, nuclear power of the present invention The stand degasser and method of gaseous impurity in reactor radioactive liquid waste has advantages below:(1) use of carrier gas is reduced Amount, for nuclear power station, reduces the discharge capacity of radgas;(2) a small amount of heat of supplement is only needed in degasification process Waste liquid is reached saturation state, save the energy required for waste liquid reaches saturation state;(3) nitrogen pair need not be used Device and pipeline are purged, and save the discharge capacity of nitrogen;(4) negative pressure degasification technique is used, conventional corollary equipment liquid is used Ring vacuum pump can just complete degasification process providing the vacuum needed for system, save construction cost;(5) present invention process Simply, easy to operate, high degree of automation, degassing safety, when leakage cut occurs in system, still ensures that system safety.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party Formula carries out appropriate change and modification.Therefore, the invention is not limited in specific embodiment disclosed and described above, to this Some modifications and changes of invention should also be as falling into scope of the claims of the invention.Although additionally, this specification In used some specific terms, but these terms are merely for convenience of description, do not constitute any limitation to the present invention.

Claims (14)

1. in a kind of nuclear power plant reactor radioactive liquid waste gaseous impurity degasser, it is characterised in that including:
Degassing tower, for receiving nuclear power plant reactor radioactive liquid waste and removing the gas dissolved in waste liquid, degassing tower has tower Top gas vent and tower reactor liquid outlet;
It is connected with degassing tower and condenser downstream, is condensed for the gas to degassing tower overhead extraction;
The vavuum pump being connected with condenser, for extracting out and compresses and is steamed by the condensed gas of condenser and uncooled water Vapour, to maintain operating pressure required in tower;And
The moisture trap being connected with vavuum pump, for separating gas and water, gas is removed.
2. degasser according to claim 1, it is characterised in that the gaseous impurity in the waste liquid include hydrogen and/ Or radgas.
3. degasser according to claim 1, it is characterised in that the moisture trap includes the gas vent at top With the water out of bottom.
4. degasser according to claim 3, it is characterised in that the water out be connected with condensate discharge pump with The condensed water elimination that will be isolated is to downstream treatment systems.
5. degasser according to claim 4, it is characterised in that between the condensate discharge pump and the vavuum pump A sealing water cooler is provided with, for being the condensed water heat exchange after degassing.
6. degasser according to claim 5, it is characterised in that the sealing water cooler includes a sealing water out With one sealing water inlet, sealing water out be connected with vavuum pump with by the sealing water supply after heat exchange to vavuum pump.
7. degasser according to claim 1, it is characterised in that also including being connected and positioned at it with the degassing tower The one cooling agent delivery pump in downstream, the cooling agent for being stripped of gaseous impurity for conveying degassing tower tower reactor.
8. degasser according to claim 1, it is characterised in that also including be connected with the degassing tower and with it is described Cooling agent delivery pump is connected to the coolant pump on a pipeline, for the circulation fluid for needed for degassing tower delivery heat transfer Body.
9. degasser according to claim 8, it is characterised in that between the coolant pump and the degassing tower Electric heater is provided with, for being heated to be transported to the cooling agent of degassing tower, is made to enter into the liquid in degassing tower and is steamed Heat needed for hair.
10. in a kind of nuclear power plant reactor radioactive liquid waste gaseous impurity degassing method, it is characterised in that including following step Suddenly:
1) nuclear power plant reactor radioactive liquid waste is conveyed into degassing tower carries out parsing separation, and radioactive liquid waste exchanges heat in filler After realize gas-liquid separation;
2) with condenser to being cooled down from the gas of degassing tower overhead extraction, the liquid that condensed device is condensed out is back to de- In gas tower, proceed degassing;
3) condenser and degassing tower are evacuated using vavuum pump, and the gas from condensator outlet out is compressed;
4) the air-water mixture feeding moisture trap for exporting vavuum pump is separated;
5) by the incoagulable gas at the top of moisture trap from top vent fed downstream system treatment, moisture trap condensation The condensed water for getting off is pumped into down-stream system and processes by condensate discharge;And
6) the tower reactor cooling agent after degassing tower is deaerated is conveyed by tower reactor cooling agent and is pumped into down-stream system treatment.
11. degassing methods according to claim 10, it is characterised in that the step 1) in, when degassing tower is de-gassed, Tower reactor pressure is controlled for 7kPa~13.5kPa, temperature is 39 DEG C~51.8 DEG C.
12. degassing methods according to claim 10, it is characterised in that in the step 5) after also include the condensation Water is pumped into sealing water cooler and exchanges heat by condensate discharge.
13. degassing methods according to claim 10, it is characterised in that also including the sealing water after the heat exchange is conveyed To vavuum pump, sealing water enters the operating pressure of the pressure less than vacuum Pump Suction Nozzle end of vavuum pump.
14. degassing methods according to claim 10, it is characterised in that in the step 6) after also include the tower reactor Cooling agent is pumped into being sent into degassing tower after electric heater is heated by circulation.
CN201611158852.9A 2016-12-15 2016-12-15 The degasser and method of gaseous impurity in nuclear power plant reactor radioactive liquid waste Pending CN106782732A (en)

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PCT/CN2017/116056 WO2018108119A1 (en) 2016-12-15 2017-12-14 Degassing device and method for gaseous impurities in radioactive waste liquid of reactor of nuclear power plant

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Application publication date: 20170531