CN114242296A - Radioactive waste resin wet oxidation device - Google Patents

Radioactive waste resin wet oxidation device Download PDF

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Publication number
CN114242296A
CN114242296A CN202111368939.XA CN202111368939A CN114242296A CN 114242296 A CN114242296 A CN 114242296A CN 202111368939 A CN202111368939 A CN 202111368939A CN 114242296 A CN114242296 A CN 114242296A
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China
Prior art keywords
reaction kettle
waste resin
wet oxidation
radioactive waste
gas
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CN202111368939.XA
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Chinese (zh)
Inventor
郭喜良
闫晓俊
柳兆峰
冯文东
安鸿翔
高超
薛海龙
刘建琴
张丽
秦翔
高凯
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China Institute for Radiation Protection
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China Institute for Radiation Protection
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Application filed by China Institute for Radiation Protection filed Critical China Institute for Radiation Protection
Priority to CN202111368939.XA priority Critical patent/CN114242296A/en
Publication of CN114242296A publication Critical patent/CN114242296A/en
Pending legal-status Critical Current

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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
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/40—Acidic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
    • 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
    • G21F9/02—Treating gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a wet oxidation device for radioactive waste resin. By adopting the radioactive waste resin wet oxidation device provided by the invention, the oxidant is added into the reaction kettle in a continuous feeding mode of constant flow pumping, so that the waste resin is subjected to oxidative degradation in a sealed negative pressure system under certain temperature and stirring conditions, and radioactive leakage is prevented; meanwhile, tail gas generated in the reaction process is led out of the reaction kettle by a vacuum pump, is cooled by a condenser and then is subjected to gas-water separation, condensate flows back to the reaction kettle or is collected in a liquid collecting bottle, and after noncondensable gas is measured, the condensate flows through a primary gas washing bottle to remove trace radionuclides and inorganic acid gas carried by the noncondensable gas, and harmful gas in the noncondensable gas is thoroughly oxidized and removed by a catalytic decomposition furnace and is finally safely discharged after passing through a secondary gas washing bottle. Aiming at the extremely small amount of nuclides possibly carried in the tail gas, the invention adopts a two-stage gas washing device and tail gas treatment processes such as catalytic oxidation and the like, so that the nuclides carried in the tail gas are recovered to the maximum extent, and the clean emission of the tail gas is ensured.

Description

Radioactive waste resin wet oxidation device
Technical Field
The invention belongs to the technical field of radioactive waste treatment, and particularly relates to a radioactive waste resin wet oxidation device.
Background
The safe disposal of organic radioactive waste resins remains one of the difficulties and hot spots in the management of domestic radioactive waste. The waste resin generated by domestic nuclear facilities is mostly treated by adopting the traditional cement curing process, and the technical bottlenecks of waste capacity increase and insufficient long-term stability of a cured body exist.
At present, research on the inorganic volume reduction treatment technology of radioactive waste resin is being carried out in China, and the research includes a wet oxidation method, supercritical water oxidation, steam reforming and the like. The wet oxidation of waste resin can be carried out at low temperature (less than 100 ℃) by oxidant H2O2Full oxidation to H2O、CO2And low-salt inorganic waste liquid, wherein the waste liquid can be subjected to cement curing/drying/nuclide purification treatment to realize inorganic volume reduction treatment of waste resin. Compared with other waste resin inorganic treatment processes, the wet oxidation process has mild reaction conditions, can be compatible with different types of waste resins, has simple tail gas composition and easy treatment, and contains radionuclide (except for the waste resin)14C) all stays in the inorganic waste liquid, and the process is economic and safe.
Aiming at the technical requirements and the blank in China at present, the inventor designs and establishes a radioactive waste resin wet oxidation device based on the requirements of waste resin wet oxidation process research.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a radioactive waste resin wet oxidation device, which is suitable for developing wet oxidation process research, realizes the inorganic volume reduction treatment of waste resins of different types, and simultaneously ensures the clean emission of tail gas.
In order to achieve the above purposes, the invention adopts the technical scheme that: the utility model provides a useless resin wet oxidation device of radioactivity, includes feed unit, oxidative degradation unit, tail gas processing unit and corresponding valve and connecting tube, wherein:
the feeding unit comprises a feeding mechanism and a device for conveying waste resin, a catalyst, an inhibitor and an oxidant into the reaction kettle;
the oxidative degradation unit comprises the reaction kettle, a heater, a stirring motor, a stirring paddle, a temperature sensor and a pressure sensor;
the tail gas treatment unit comprises a condenser, a flow meter, a primary gas washing bottle, a catalytic decomposition furnace, a secondary gas washing bottle and a vacuum pump; the condenser is connected with the reaction kettle, and the non-condensable gas in the condenser is metered by the flowmeter, enters the primary gas washing bottle for alkali liquor absorption and purification, and then enters the catalytic decomposition furnace; and after catalytic decomposition, the tail gas enters a secondary gas washing bottle for secondary alkali liquor absorption and purification.
Further, the feeding unit comprises two ball valves, and the inhibitor is added into the reaction kettle through an additive feeding hole in a kettle cover of the reaction kettle through a metering mechanism consisting of the two ball valves and a pipeline;
the feeding mode of the inhibitor is a fixed-volume intermittent feeding mode.
Further, the feeding unit comprises a pump, and the oxidant is added into the reaction kettle through a feeding hole in a kettle cover of the reaction kettle in a constant-flow continuous feeding mode through the pump;
the pump is selected from one of a peristaltic pump, a diaphragm metering pump and a gear metering pump.
Further, the reaction kettle is a reaction kettle with a jacket, and a heating medium is introduced into the jacket of the reaction kettle to provide a reaction temperature required by the reaction;
the heat medium adopts low-pressure steam, hot water or heat conducting oil;
and after the heating medium is heated by the heater, the heating medium is driven by a circulating pump to circularly flow through the reaction kettle jacket in a mode of going in and out.
Further, the temperature sensor is inserted into the materials in the reaction kettle through the kettle cover of the reaction kettle, and the temperature of the materials in the reaction kettle is continuously monitored in real time;
the pressure sensor is arranged on a kettle cover of the reaction kettle and is used for continuously monitoring the pressure change in the reaction kettle in real time.
Further, the stirring motor is a variable frequency stirring motor, and the stirring paddle is connected with an output shaft of the variable frequency stirring motor through a coupler;
the stirring paddle blade at the tail end of the stirring paddle keeps a safe distance from the bottom of the reaction kettle so as to prevent the stirring from being influenced.
Furthermore, the tail gas processing unit also comprises at least two one-way valves, and the upstream of the primary gas washing bottle and the upstream of the secondary gas washing bottle are both provided with one-way valves so as to prevent the liquid in the gas washing bottle from flowing backwards under the negative pressure effect in the upstream container.
Furthermore, the tail gas treatment unit also comprises a water chiller, and the refrigerant in the condenser is circulating cooling water adopting a bottom-in and top-out mode;
and the cooling water circularly flows through the condenser and the water chiller to cool the tail gas discharged by the reaction kettle.
Further, the tail gas treatment unit also comprises a liquid collecting bottle, and condensate in the condenser flows back into the reaction kettle or is collected in the liquid collecting bottle.
Further, the vacuum pump is connected with the secondary gas washing bottle, and the operation of the radioactive waste resin wet oxidation device is regulated and controlled under the negative pressure within a set range through a pressure regulating valve of the vacuum pump.
The invention has the beneficial effects that: by adopting the radioactive waste resin wet oxidation device provided by the invention, the oxidant is added into the reaction kettle in a continuous feeding mode of constant flow pumping, the inhibitor is added into the reaction kettle in an intermittent feeding mode of constant volume, so that the waste resin is subjected to oxidative degradation in a sealed negative pressure system at a certain temperature and under stirring conditions, and radioactive leakage is prevented; meanwhile, tail gas generated in the reaction process is led out of the reaction kettle by a vacuum pump, is cooled by a condenser and then is subjected to gas-water separation, condensate flows back to the reaction kettle or is collected in a liquid collecting bottle, and after noncondensable gas is measured, the condensate flows through a primary gas washing bottle to remove trace radionuclides and inorganic acid gas carried by the noncondensable gas, and harmful gas in the noncondensable gas is thoroughly oxidized and removed by a catalytic decomposition furnace and is finally safely discharged after passing through a secondary gas washing bottle. The upstream of the first-stage gas washing bottle and the upstream of the second-stage gas washing bottle are respectively provided with a one-way valve, so that the liquid in the gas washing bottles is prevented from flowing backwards under the negative pressure effect in the upstream container. Aiming at the extremely small amount of nuclides possibly carried in the tail gas, the invention adopts a two-stage gas washing device and tail gas treatment processes such as catalytic oxidation and the like, so that the nuclides carried in the tail gas are recovered to the maximum extent, and the clean emission of the tail gas is ensured.
Drawings
Fig. 1 is a schematic view of a radioactive waste resin wet oxidation apparatus according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the embodiments of the present invention will be further clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
As shown in fig. 1, the embodiment of the invention provides a radioactive waste resin wet oxidation apparatus, which comprises a feeding unit, an oxidative degradation unit and a tail gas treatment unit; wherein the content of the first and second substances,
(1) feed unit
The feeding unit comprises a feeding mechanism and equipment for conveying materials such as waste resin, a catalyst, an inhibitor, an oxidant and the like into the reaction kettle 2.
In the embodiment, the waste resin and the catalyst solution are weighed and measured in advance in proportion and mixed, and the mixed waste resin and the mixed catalyst solution are added into the reaction kettle 2 at one time from a feeding hole on the kettle cover 21 of the reaction kettle; the inhibitor is added into the reaction kettle 2 through an additive feeding port on the reaction kettle cover 21 by a metering mechanism consisting of two ball valves and a pipeline, and is added in an intermittent feeding mode with a fixed volume; the oxidant is added into the reaction kettle 2 through a feed inlet on the kettle cover 21 of the reaction kettle in a constant-flow continuous feeding mode by adopting a pump, wherein the pump can adopt a peristaltic pump, a diaphragm metering pump, a gear metering pump and the like. In this embodiment, a peristaltic pump 1 is used to continuously feed into the reaction vessel 2 through a feed inlet on the reaction vessel cover 21.
(2) Oxidative degradation unit
The oxidative degradation unit comprises a reaction kettle 2, a heater 23, a stirring motor, a stirring paddle, a temperature sensor 24, a pressure sensor 25, corresponding valves, connecting pipelines and other equipment and components.
In the present embodiment, the reaction kettle 2 is a jacketed reaction kettle, and a heating medium is introduced into the jacket 22 of the reaction kettle to provide a reaction temperature required by the reaction; the heating medium in the reaction kettle jacket 22 can be low-pressure steam, hot water or heat conducting oil, and after the heating medium is heated by the heater 23, the heating medium is driven by the circulating pump to circularly flow through the reaction kettle jacket 22 in a mode of going in and out. The temperature sensor 24 is inserted into the materials in the reaction kettle through the kettle cover 21 of the reaction kettle, and the temperature of the materials in the reaction kettle is continuously monitored in real time; the pressure sensor 25 is installed on the reaction kettle cover 21 and is used for continuously monitoring the pressure change in the reaction kettle in real time.
The stirring motor is a variable-frequency stirring motor 26, and the stirring paddle is connected with an output shaft of the variable-frequency stirring motor through a coupler; the variable frequency stirring motor 26 operates at a set rotating speed, the stirring paddle continuously stirs materials in the reaction kettle, the stirring paddle extends into the reaction kettle through a preformed hole on the kettle cover of the reaction kettle, and a stirring paddle blade 27 at the tail end of the stirring paddle has a certain safety distance from the kettle bottom of the reaction kettle, so that stirring is prevented from being influenced; the stirring paddle blade 27 at the tail end of the stirring paddle is made of polytetrafluoroethylene, and the stirring paddle shaft is made of stainless steel wrapped with polytetrafluoroethylene; not only can ensure long-term stability, but also is convenient for decontamination treatment. And a discharge hole of the reaction kettle positioned at the bottom of the reaction kettle is used for collecting the oxidation residual liquid.
(3) Tail gas treatment unit
The tail gas treatment unit comprises a condenser 31, a water cooler 32, a liquid collecting bottle 33, a flow meter 34, a one-way valve 35, a primary gas washing bottle 36, a catalytic decomposition furnace 37, a secondary gas washing bottle 38, a vacuum pump 39, corresponding valves, connecting pipelines and other equipment and components.
In the present embodiment, the refrigerant in the condenser 31 is circulating cooling water in a bottom-in and top-out manner, and the cooling water circulates through the condenser 31 and the water chiller 32 to cool the tail gas discharged from the reaction kettle 2; the tail gas discharged from the reaction kettle 2 is cooled by a condenser 31 and then gas-liquid separation occurs, condensate in the condenser 31 flows back to the reaction kettle 2 or is collected in a liquid collecting bottle 33, and the residual non-condensable gas is metered by a flowmeter 34 and then enters a primary gas washing bottle 36 for alkali liquor absorption and purification, and then enters a catalytic decomposition furnace 37; according to the technological requirements, oxygen is added into the catalytic decomposition furnace 37 according to a certain proportion according to the flow of the non-condensable gas. The tail gas after catalytic decomposition enters a secondary gas washing bottle 38 for secondary alkali liquor absorption and purification.
The vacuum pump 39 is connected with the secondary gas washing bottle 38 and arranged at the tail end of the radioactive waste resin wet oxidation device, and the whole radioactive waste resin wet oxidation device is regulated and controlled to operate under the negative pressure within the preset range through a pressure regulating valve of the vacuum pump 39.
Meanwhile, the upstream of the first-stage gas washing bottle and the upstream of the second-stage gas washing bottle are both provided with one-way valves 35, so that liquid in the gas washing bottles is prevented from flowing backwards under the action of negative pressure in the upstream container.
According to the radioactive waste resin wet oxidation device provided by the embodiment of the invention, an oxidant is added into a reaction kettle 2 in a constant flow pumping continuous feeding mode, an inhibitor is added into the reaction kettle 2 in a constant volume intermittent feeding mode, waste resin is subjected to oxidative decomposition under certain temperature and stirring conditions, tail gas generated in the reaction process is led out of the reaction kettle 2 by a vacuum pump 39, the temperature is reduced by a condenser 31, gas and water are separated, and condensate flows back to the reaction kettle 2 or is collected in a liquid collecting bottle 33; the noncondensable gas is measured by a flowmeter 34, flows through a primary gas washing bottle 36 to remove trace radionuclides and inorganic acid gases carried by the noncondensable gas, is thoroughly oxidized and removed by a catalytic decomposition furnace 37 to remove harmful gases in the noncondensable gas, and is safely discharged after passing through a secondary gas washing bottle 38. One-way valves 35 are arranged at the upstream of the primary washing gas bottle 36 and the secondary washing gas bottle 38, so that liquid in the washing gas bottles is prevented from flowing backwards under the action of negative pressure in the upstream container. In addition, an air inlet is provided in front of the vacuum pump 39 to adjust the pressure in the reaction tank 2.
The method of the present invention is not limited to the specific embodiments described above, which are merely illustrative of the present invention, but the present invention may be embodied in other specific forms or other specific forms without departing from the gist or essential characteristics of the present invention. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.

Claims (10)

1. A radioactive waste resin wet oxidation device is characterized in that: the device includes feed unit, oxidative degradation unit, tail gas processing unit and corresponding valve and connecting tube, wherein:
the feeding unit comprises a feeding mechanism and a device for conveying waste resin, a catalyst, an inhibitor and an oxidant into the reaction kettle;
the oxidative degradation unit comprises the reaction kettle (2), a heater (23), a stirring motor, a stirring paddle, a temperature sensor (24) and a pressure sensor (25);
the tail gas treatment unit comprises a condenser (31), a flow meter (34), a primary gas washing bottle (36), a catalytic decomposition furnace (37), a secondary gas washing bottle (38) and a vacuum pump (39); the condenser (31) is connected with the reaction kettle (2), and the non-condensable gas in the condenser (31) is metered by the flow meter (34), enters the primary gas washing bottle (36) for alkali liquor absorption and purification, and then enters the catalytic decomposition furnace (37); the tail gas after catalytic decomposition enters a secondary gas washing bottle (38) for secondary alkali liquor absorption and purification.
2. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the feeding unit comprises two ball valves, and the inhibitor is added into the reaction kettle (2) through an additive feeding hole on a kettle cover (21) of the reaction kettle by a metering mechanism consisting of the two ball valves and a pipeline;
the feeding mode of the inhibitor is a fixed-volume intermittent feeding mode.
3. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the feeding unit comprises a pump, and an oxidant is fed into the reaction kettle (2) through a feeding hole in a reaction kettle cover (21) in a constant-flow continuous feeding mode through the pump;
the pump is selected from one of a peristaltic pump, a diaphragm metering pump and a gear metering pump.
4. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the reaction kettle (2) is provided with a jacket, and a heating medium is introduced into the jacket (22) of the reaction kettle to provide the reaction temperature required by the reaction;
the heat medium adopts low-pressure steam, hot water or heat conducting oil;
after the heating medium is heated by the heater (23), the heating medium is driven by the circulating pump to circularly flow through the reaction kettle jacket (22) in a mode of going in and out.
5. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the temperature sensor (24) is inserted into the materials in the reaction kettle through the kettle cover (21) of the reaction kettle, and the temperature of the materials in the reaction kettle is continuously monitored in real time;
the pressure sensor (25) is arranged on the reaction kettle cover (21) and is used for continuously monitoring the pressure change in the reaction kettle in real time.
6. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the stirring motor is a variable-frequency stirring motor (26), and the stirring paddle is connected with an output shaft of the variable-frequency stirring motor (26) through a coupler;
and a stirring paddle blade (27) at the tail end of the stirring paddle keeps a safe distance from the bottom of the reaction kettle so as to prevent the stirring from being influenced.
7. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the tail gas treatment unit also comprises at least two one-way valves (35), and one-way valve (35) is arranged at the upstream of the primary gas washing bottle (36) and the upstream of the secondary gas washing bottle (38) so as to prevent liquid in the gas washing bottles from flowing backwards under the negative pressure effect in an upstream container.
8. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the tail gas treatment unit also comprises a water cooler (32), and the refrigerant in the condenser (31) is circulating cooling water adopting a bottom-in and top-out mode;
the cooling water circularly flows through the condenser (31) and the water cooler (32) to cool the tail gas discharged by the reaction kettle.
9. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the tail gas treatment unit also comprises a liquid collecting bottle (33), and condensate in the condenser (31) flows back into the reaction kettle (2) or is collected in the liquid collecting bottle (33).
10. The radioactive waste resin wet oxidation apparatus according to claim 1, wherein: the vacuum pump (39) is connected with the secondary gas washing bottle (38), and the operation of the radioactive waste resin wet oxidation device is regulated and controlled under the negative pressure within a set range by a pressure regulating valve of the vacuum pump (39).
CN202111368939.XA 2021-11-18 2021-11-18 Radioactive waste resin wet oxidation device Pending CN114242296A (en)

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CN202111368939.XA CN114242296A (en) 2021-11-18 2021-11-18 Radioactive waste resin wet oxidation device

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Application Number Priority Date Filing Date Title
CN202111368939.XA CN114242296A (en) 2021-11-18 2021-11-18 Radioactive waste resin wet oxidation device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950310A (en) * 2022-03-28 2022-08-30 河海大学 Sea area dredging sand desalination device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950310A (en) * 2022-03-28 2022-08-30 河海大学 Sea area dredging sand desalination device

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