CN114797391A - Hydrogen separator, regulation and control method and research reactor coolant purification system - Google Patents
Hydrogen separator, regulation and control method and research reactor coolant purification system Download PDFInfo
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- CN114797391A CN114797391A CN202210616391.4A CN202210616391A CN114797391A CN 114797391 A CN114797391 A CN 114797391A CN 202210616391 A CN202210616391 A CN 202210616391A CN 114797391 A CN114797391 A CN 114797391A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 87
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 87
- 239000002826 coolant Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000012528 membrane Substances 0.000 claims abstract description 52
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 48
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 47
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 26
- 230000002285 radioactive effect Effects 0.000 claims abstract description 19
- 239000012466 permeate Substances 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 7
- 239000012159 carrier gas Substances 0.000 claims abstract description 7
- 230000000717 retained effect Effects 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000002596 correlated effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000003828 vacuum filtration Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 7
- 238000004880 explosion Methods 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000003904 radioactive pollution Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 238000003608 radiolysis reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- B01D53/22—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 diffusion
- B01D53/228—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 diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0073—Degasification of liquids by a method not covered by groups B01D19/0005 - B01D19/0042
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
- C01B3/503—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion characterised by the membrane
- C01B3/505—Membranes containing palladium
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a hydrogen separator, a regulation and control method and a research reactor coolant purification system, which relate to the technical field of nuclear reactor safety, and have the technical scheme that: comprises a sealed container and a palladium composite membrane; the palladium composite membrane is hermetically arranged in the sealed container so as to divide the interior of the sealed container into an upper cavity and a lower cavity; the lower cavity is provided with a liquid inlet and a liquid outlet; the side wall of the upper cavity is provided with a first exhaust port and a second exhaust port; the side wall of the lower cavity is provided with a pressure pump; the pressurizing pump pressurizes the lower cavity, so that carrier gas containing dissolved hydrogen in the coolant is gradually released, and the hydrogen diffuses and permeates through the palladium composite membrane under the action of pressure difference between the upper cavity and the lower cavity. The invention is suitable for high-flux reactors, can reduce the hydrogen content in the coolant, avoids carrying radioactive gas, eliminates the possible combustion and explosion effects caused by large-volume hydrogen, ensures the safety of the reactor and reduces the radiation hazard to workers.
Description
Technical Field
The invention relates to the technical field of nuclear reactor safety, in particular to a hydrogen separator, a regulation and control method and a research reactor coolant purification system.
Background
During operation of a nuclear reactor, the coolant within the core may decompose under the influence of radiation to produce hydrogen and oxygen. The stronger the core ray, the more pronounced the radiolysis, and the potential for explosions from excess hydrogen and oxygen in the coolant system.
At present, in the high-flux stack operation, in order to avoid the explosion risk of hydrogen in the coolant, a continuous degassing method is adopted to remove gas in the coolant, and then the gas is directly discharged through a chimney. However, during the degassing process, not only hydrogen gas is removed, but also radioactive gas in the coolant is removed and discharged through a chimney, so that radioactive substances discharged to the environment by the research stack are increased, and radiation dose of the surrounding public and the environment is increased.
Therefore, how to research and design a hydrogen separator, a regulation and control method and a reactor coolant purification system which can overcome the defects is a problem which is urgently needed to be solved at present.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a hydrogen separator, a regulation and control method and a research reactor coolant purification system, which are applicable to a high-flux reactor, can reduce the hydrogen content in a coolant, avoid carrying radioactive gas, eliminate the combustion and explosion effects possibly caused by large-volume hydrogen, avoid unnecessary radioactive pollution, ensure the safety of the reactor and reduce the radiation hazard to workers.
The technical purpose of the invention is realized by the following technical scheme:
in a first aspect, a hydrogen separator is provided, comprising a sealed container and a palladium composite membrane;
the palladium composite membrane is hermetically arranged in the sealed container so as to divide the interior of the sealed container into an upper cavity and a lower cavity;
a liquid inlet for inputting the coolant and a liquid outlet for outputting the coolant are formed in the side wall of the lower cavity;
the side wall of the upper cavity is provided with a first exhaust port for discharging and collecting separated hydrogen, and the side wall of the lower cavity is provided with a second exhaust port for discharging and collecting separated and decayed radioactive gas;
the side wall of the lower cavity is provided with a pressure pump;
the pressurizing pump pressurizes the lower cavity, so that carrier gas containing dissolved hydrogen in the coolant is gradually released, and the hydrogen diffuses and permeates through the palladium composite membrane under the action of pressure difference between the upper cavity and the lower cavity.
Further, the palladium composite membrane is of a porous structure.
Further, the pore diameter of the porous structure is in a nanometer level.
Further, the preparation process of the palladium composite membrane specifically comprises the following steps:
will analyze pure Zn (NO) 3 ) 2 Adding the particles into a modifying liquid containing a dispersing agent, and uniformly mixing by ultrasonic;
preparing a base membrane by using a vacuum filtration method by taking a porous ceramic base membrane as a carrier;
and (3) placing the base membrane in a palladium plating solution at 60 ℃, preparing the palladium membrane by adopting a chemical plating method, drying, and calcining at a high temperature of 400 ℃ to prepare the palladium composite membrane with the nano porous structure.
In a second aspect, a method for regulating a hydrogen separator is provided, where the hydrogen separator is the hydrogen separator in any one of the first aspect, and the method includes the following steps:
opening the liquid inlet, closing the liquid outlet, the first exhaust port and the second exhaust port, and injecting a coolant into the lower cavity through the liquid inlet;
after the coolant is injected, closing the liquid inlet, simultaneously starting the booster pump to promote the carrier gas containing dissolved hydrogen in the coolant to be gradually released, and enabling the hydrogen to diffuse and permeate through the palladium composite membrane under the action of the pressure difference between the upper cavity and the lower cavity;
opening a first exhaust port, and exhausting and collecting the hydrogen separated in the upper cavity to be detected; opening a second exhaust port, and exhausting, collecting and purifying the residual radioactive mixed gas after the hydrogen in the lower cavity is separated;
and after the hydrogen and the radioactive mixed gas are exhausted, opening the liquid outlet to exhaust the coolant in the lower cavity, and repeating the operation to realize the coolant circulation treatment.
Furthermore, the liquid level of the lower cavity after being injected with the coolant and the lower surface of the palladium composite membrane are distributed at intervals to form a gas release space.
Further, the coolant is discharged from the lower cavity while a part of the coolant is retained, and the retained coolant is one third to two thirds of the total coolant in the lower cavity.
Further, the pressure pump stops when the pressure difference between the upper cavity and the lower cavity reaches a set threshold, and the set threshold is positively correlated with the hydrogen permeation efficiency and the hydrogen permeation amount of the palladium composite membrane.
Furthermore, the separation time is not less than a set time after the pressurizing pump stops, and the set time is determined by the time when the pressure difference between the upper cavity and the lower cavity reaches a steady state and the decay time of the radioactive mixed gas in the upper cavity.
In a third aspect, there is provided a research reactor coolant purification system comprising a reactor loop and a hydrogen separator as described in any one of the first aspects;
the liquid inlet and the liquid outlet are both communicated with a loop of the reactor, so that the hydrogen separator is connected into the loop of the reactor in parallel.
Compared with the prior art, the invention has the following beneficial effects:
1. the hydrogen separator provided by the invention is applicable to a high-flux reactor, can reduce the hydrogen content in a coolant, avoids carrying radioactive gas, eliminates the combustion and explosion effects possibly caused by large-volume hydrogen, avoids unnecessary radioactive pollution, ensures the safety of the reactor and reduces the radiation hazard to workers;
2. the palladium composite membrane with the porous structure can realize free expansion of the palladium membrane in the pressure change process while maintaining the selective permeability of hydrogen, thereby further improving the stability of the membrane;
3. when the hydrogen separator treats the coolant in the reactor loop, part of the coolant is reserved in the lower cavity, so that the hydrogen in a dissolved state is gradually released, the treatment efficiency of the hydrogen separator is improved, the cycle treatment period of the hydrogen separator is shorter, the peak point of the hydrogen content in the reactor loop is reduced, and the safety of the reactor is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure in the embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
101. sealing the container; 102. a palladium composite membrane; 103. a lower cavity; 104. an upper cavity; 105. a liquid inlet; 106. a liquid discharge port; 107. a pressure pump; 108. a first exhaust port; 109. a second exhaust port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b): a hydrogen separator is disclosed, as shown in figure 1, comprising a sealed container 101 and a palladium composite membrane 102; the palladium composite membrane 102 is hermetically installed in the sealed container 101 so as to divide the interior of the sealed container 101 into an upper cavity 104 and a lower cavity 103; the side wall of the lower cavity 103 is provided with a liquid inlet 105 for inputting the coolant and a liquid outlet 106 for outputting the coolant; the side wall of the upper cavity 104 is provided with a first exhaust port 108 for exhausting and collecting separated hydrogen, and the side wall of the lower cavity 103 is provided with a second exhaust port 109 for exhausting and collecting separated and decayed radioactive gas; the side wall of the lower cavity 103 is provided with a pressure pump 107; the pressurizing pump 107 pressurizes the lower cavity 103, so that carrier gas containing dissolved hydrogen in the coolant is gradually released, and the hydrogen diffuses and permeates through the palladium composite membrane 102 under the action of the pressure difference between the upper cavity 104 and the lower cavity 103.
The shape of the sealed container 101 may be a rectangular body, a cylindrical body, or other irregular body. In addition, in order to ensure the stability of the use of the palladium composite membrane 102, the palladium composite membrane 102 is installed in the hermetic container 101 in a horizontal state, and in order to increase the total amount of coolant for a single treatment of the hydrogen separator, the spatial volume of the lower cavity 103 is larger than that of the upper cavity 104.
The palladium has a special atomic structure, so that the palladium has selective hydrogen permeability. The 4d layer of electron distribution of palladium atom has less 2 electrons, so that its surface has stronger hydrogen-absorbing capacity, and the hydrogen molecule can be dissociated into hydrogen atom. Palladium abstracts electrons from hydrogen atoms to change hydrogen into hydrogen protons, which diffuse through the palladium membrane in a gradient direction.
The invention separates and purifies hydrogen in the research reactor coolant and reduces the release of the carried radioactive gas to the environment, thereby reducing the radiation hazard of the research reactor to the public and the environment.
In this embodiment, the palladium composite membrane 102 is a nano-scale porous structure, and the palladium composite membrane 102 with the porous structure realizes free expansion and contraction of the palladium membrane in the pressure change process while maintaining the hydrogen selective permeability, so as to further improve the stability of the membrane;
in order to be suitable for the present invention, the palladium composite membrane 102 is prepared by the following method in order to allow hydrogen to permeate through the total gas containing the radioactive mixed gas with better specificity: analytically pure Zn (NO3) 2 Adding the particles into a modifying liquid containing a dispersing agent, and uniformly mixing by ultrasonic; preparing a base membrane by using a vacuum filtration method by taking a porous ceramic base membrane as a carrier; the base membrane is placed in palladium plating solution at 60 ℃, the palladium membrane is prepared by adopting a chemical plating method, and the palladium membrane 102 with the nano porous structure is prepared by drying and then calcining at high temperature of 400 ℃.
The regulation and control method of the hydrogen separator comprises the following specific steps: opening the liquid inlet 105, closing the liquid outlet 106, the first exhaust port 108 and the second exhaust port 109, and injecting the coolant into the lower cavity 103 through the liquid inlet 105; after the coolant is injected, the liquid inlet 105 is closed, and the booster pump 107 is started at the same time, so that carrier gas containing dissolved hydrogen in the coolant is gradually released, and the hydrogen is diffused and permeates through the palladium composite membrane 102 under the action of the pressure difference between the upper cavity 104 and the lower cavity 103; opening the first vent 108 to vent the separated hydrogen in the upper cavity 104 for collection; opening a second exhaust port 109, and exhausting, collecting and purifying the residual radioactive mixed gas after the hydrogen gas in the lower cavity 103 is separated; after the hydrogen gas and the radioactive mixed gas are exhausted, the liquid outlet 106 is opened to exhaust the coolant in the lower cavity 103, and the operation is repeated to realize the coolant circulation treatment.
The liquid level of the lower cavity 103 after the coolant is injected and the lower surface of the palladium composite membrane 102 are distributed at intervals to form a gas release space, and the pressure pump 107 and the second exhaust port 109 are both arranged at corresponding positions of the gas release space.
The coolant is partially retained when discharged from the lower cavity 103, and the retained coolant is one-third to two-thirds of the total coolant in the lower cavity 103. For example, the inner volume of the entire hermetic container 101 is 10m 3 The lower cavity 103 and the upper cavity 104 may occupy 6m, respectively 3 、4m 3 The coolant retained in the lower cavity 103 may be 2m 3 The coolant injected into the lower cavity 103 per time may be 2m 3 。
When the coolant in the reactor primary loop is treated, part of the coolant is reserved in the lower cavity 103, so that the gradual release of the dissolved hydrogen is facilitated, the treatment efficiency of the hydrogen separator is improved, the cycle treatment period of the hydrogen separator is short, the hydrogen content peak point in the reactor primary loop is reduced, and the safety of the reactor is further improved.
The pressurizing pump 107 is stopped when the pressure difference between the upper cavity 104 and the lower cavity 103 reaches a set threshold value, which is positively correlated with the hydrogen permeation efficiency and the hydrogen permeation amount of the palladium composite membrane 102. For example, taking the volume distribution as an example, the threshold value is set to 50 kPa.
The separation time is kept to be not less than a set time after the pressurization pump 107 is stopped, and the set time is determined by the time when the pressure difference between the upper cavity 104 and the lower cavity 103 reaches a steady state and the decay time of the radioactive mixed gas in the upper cavity 104. In the present embodiment, 48h is used for the set time.
When the hydrogen separator is applied to a research reactor, the liquid inlet 105 and the liquid outlet 106 are both communicated with a reactor loop, so that the hydrogen separator is connected in parallel to the reactor loop.
The working principle is as follows: the invention is suitable for a high-flux reactor, can reduce the hydrogen content in the coolant, avoids carrying radioactive gas, eliminates the possible combustion and explosion effects caused by large-volume hydrogen, avoids unnecessary radioactive pollution, ensures the safety of the reactor and reduces the radiation hazard to workers.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A hydrogen separator is characterized by comprising a sealed container (101) and a palladium composite membrane (102);
the palladium composite membrane (102) is hermetically arranged in the sealed container (101) so as to divide the interior of the sealed container (101) into an upper cavity (104) and a lower cavity (103);
a liquid inlet (105) for inputting the coolant and a liquid outlet (106) for outputting the coolant are formed in the side wall of the lower cavity (103);
the side wall of the upper cavity (104) is provided with a first exhaust port (108) for exhausting and collecting separated hydrogen, and the side wall of the lower cavity (103) is provided with a second exhaust port (109) for exhausting and collecting separated and decayed radioactive gas;
a pressure pump (107) is arranged on the side wall of the lower cavity (103);
the pressurizing pump (107) pressurizes the lower cavity (103), so that carrier gas containing dissolved hydrogen in the coolant is gradually released, and the hydrogen is diffused and permeates through the palladium composite membrane (102) under the action of pressure difference between the upper cavity (104) and the lower cavity (103).
2. Hydrogen separator according to claim 1, characterized in that the palladium composite membrane (102) is of porous structure.
3. Hydrogen separator according to claim 2, characterized in that the pore size of the porous structure is of the order of nanometers.
4. The hydrogen separator as claimed in claim 2, wherein the palladium composite membrane (102) is prepared by a process comprising:
will analyze pure Zn (NO) 3 ) 2 Adding the particles into a modifying liquid containing a dispersing agent, and uniformly mixing by ultrasonic;
preparing a base membrane by using a vacuum filtration method by taking a porous ceramic base membrane as a carrier;
and (2) placing the base membrane in a palladium plating solution at 60 ℃, preparing the palladium membrane by adopting a chemical plating method, drying, and calcining at a high temperature of 400 ℃ to prepare the palladium composite membrane (102) with the nano porous structure.
5. A regulation and control method for a hydrogen separator is characterized in that the hydrogen separator is the hydrogen separator as claimed in any one of claims 1 to 4, and comprises the following steps:
opening the liquid inlet (105), closing the liquid outlet (106), the first exhaust port (108) and the second exhaust port (109), and injecting coolant into the lower cavity (103) through the liquid inlet (105);
after the coolant is injected, the liquid inlet (105) is closed, and meanwhile, the booster pump (107) is started to promote the carrier gas containing dissolved hydrogen in the coolant to be gradually released, and the hydrogen is diffused and permeates through the palladium composite membrane (102) under the action of the pressure difference between the upper cavity (104) and the lower cavity (103);
opening a first exhaust port (108) to exhaust the separated hydrogen in the upper cavity (104) for collection and detection; opening a second exhaust port (109), and discharging, collecting and purifying the residual radioactive mixed gas after the hydrogen in the lower cavity (103) is separated;
after the hydrogen and the radioactive mixed gas are exhausted, the liquid outlet (106) is opened to exhaust the coolant in the lower cavity (103), and the operation is repeated to realize the coolant circulation treatment.
6. The regulation and control method for the hydrogen separator as claimed in claim 5, wherein the liquid level after the coolant is injected into the lower cavity (103) and the lower surface of the palladium composite membrane (102) are distributed at intervals to form a gas release space.
7. Method for regulating a hydrogen separator according to claim 5, characterized in that part of the coolant is retained when the coolant is discharged from the lower cavity (103), and the retained coolant is one third to two thirds of the total coolant in the lower cavity (103).
8. The regulating method of the hydrogen separator as claimed in claim 5, wherein the pressurizing pump (107) is stopped when the pressure difference between the upper cavity (104) and the lower cavity (103) reaches a set threshold, and the set threshold is positively correlated with the hydrogen permeation efficiency and the hydrogen permeation amount of the palladium composite membrane (102).
9. The regulation and control method for the hydrogen separator as claimed in claim 8, wherein the separation time is kept to be not less than a set time after the pressurization pump (107) is stopped, and the set time is determined by the time when the pressure difference between the upper cavity (104) and the lower cavity (103) reaches a steady state and the decay time of the radioactive mixed gas in the upper cavity (104).
10. A research reactor coolant purification system comprising a reactor primary circuit and a hydrogen separator as claimed in any one of claims 1 to 4;
the liquid inlet (105) and the liquid outlet (106) are both communicated with a reactor loop, so that the hydrogen separator is connected into the reactor loop in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616391.4A CN114797391A (en) | 2022-06-01 | 2022-06-01 | Hydrogen separator, regulation and control method and research reactor coolant purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210616391.4A CN114797391A (en) | 2022-06-01 | 2022-06-01 | Hydrogen separator, regulation and control method and research reactor coolant purification system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719015A (en) * | 1980-07-07 | 1982-02-01 | Mitsubishi Heavy Ind Ltd | Waste gas treating apparatus |
| CN85100505A (en) * | 1985-04-01 | 1986-07-16 | 中国科学院上海冶金研究所 | From the nuclear reactor waste gas-hydrogen, separate and concentrated krypton, xenon technology |
| CN1640530A (en) * | 2004-01-09 | 2005-07-20 | 中国科学院大连化学物理研究所 | Composite metal palladium membrane or alloy palladium membrane and its preparing method |
| CN102728174A (en) * | 2012-06-16 | 2012-10-17 | 武安市晶天工贸有限公司 | Filtration system for hydrogen in nuclear power station containment vessel |
| JP2014010049A (en) * | 2012-06-29 | 2014-01-20 | Hitachi-Ge Nuclear Energy Ltd | Hydrogen treatment system for nuclear power plant |
| CN203610022U (en) * | 2013-11-21 | 2014-05-28 | 中国科学院大连化学物理研究所 | Metal palladium or palladium alloy composite membrane hydrogen purifier |
-
2022
- 2022-06-01 CN CN202210616391.4A patent/CN114797391A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719015A (en) * | 1980-07-07 | 1982-02-01 | Mitsubishi Heavy Ind Ltd | Waste gas treating apparatus |
| CN85100505A (en) * | 1985-04-01 | 1986-07-16 | 中国科学院上海冶金研究所 | From the nuclear reactor waste gas-hydrogen, separate and concentrated krypton, xenon technology |
| CN1640530A (en) * | 2004-01-09 | 2005-07-20 | 中国科学院大连化学物理研究所 | Composite metal palladium membrane or alloy palladium membrane and its preparing method |
| CN102728174A (en) * | 2012-06-16 | 2012-10-17 | 武安市晶天工贸有限公司 | Filtration system for hydrogen in nuclear power station containment vessel |
| JP2014010049A (en) * | 2012-06-29 | 2014-01-20 | Hitachi-Ge Nuclear Energy Ltd | Hydrogen treatment system for nuclear power plant |
| CN203610022U (en) * | 2013-11-21 | 2014-05-28 | 中国科学院大连化学物理研究所 | Metal palladium or palladium alloy composite membrane hydrogen purifier |
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