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CN113963833A - A heat pump evaporation treatment system and method for radioactive waste liquid treatment - Google Patents

A heat pump evaporation treatment system and method for radioactive waste liquid treatment Download PDF

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CN113963833A
CN113963833A CN202111447133.XA CN202111447133A CN113963833A CN 113963833 A CN113963833 A CN 113963833A CN 202111447133 A CN202111447133 A CN 202111447133A CN 113963833 A CN113963833 A CN 113963833A
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condensate
steam
chamber
steam generator
liquid level
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CN113963833B (en
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车建业
鄢枭
赵大鹏
韩一丹
张志良
穆建波
杨雪峰
杜光斐
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China Institute of Atomic of Energy
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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
    • G21F9/04Treating liquids
    • G21F9/06Processing
    • G21F9/08Processing by evaporation; by distillation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • 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
    • G21F9/20Disposal of liquid waste
    • G21F9/22Disposal of liquid waste by storage in a tank or other container

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Abstract

本公开涉及一种用于放射性废液处理的热泵蒸发处理系统及方法,该系统包括第一预热器、第二预热器、蒸发器、蒸汽压缩机、电蒸汽发生器、设置在电蒸汽发生器的冷凝液出口与所述第一预热室的入口之间的冷凝液流量调节阀、设置在电蒸汽发生器中的液位传感器,以及分别与冷凝液流量调节阀和液位传感器对应连接的控制器。本公开提供的热泵蒸发处理系统中设有冷凝液控制装置,能够实时监测电蒸汽发生器中的实际液位,并基于所述实际液位对流出电蒸汽发生器的蒸汽冷凝液的流量进行调节,这能够有效避免电蒸汽发生器空罐干烧或满罐溢出等问题的出现,有利于延长设备的使用寿命。

Figure 202111447133

The present disclosure relates to a heat pump evaporation treatment system and method for radioactive waste liquid treatment. The system includes a first preheater, a second preheater, an evaporator, a steam compressor, an electric steam generator, and an electric steam generator. a condensate flow regulating valve between the condensate outlet of the generator and the inlet of the first preheating chamber, a liquid level sensor arranged in the electric steam generator, and corresponding to the condensate flow regulating valve and the liquid level sensor respectively connected controller. The heat pump evaporation treatment system provided by the present disclosure is provided with a condensate control device, which can monitor the actual liquid level in the electric steam generator in real time, and adjust the flow rate of the steam condensate flowing out of the electric steam generator based on the actual liquid level , which can effectively avoid the occurrence of problems such as dry burning of the electric steam generator empty tank or overflow of the full tank, which is beneficial to prolong the service life of the equipment.

Figure 202111447133

Description

Heat pump evaporation treatment system and method for radioactive waste liquid treatment
Technical Field
The disclosure relates to the technical field of waste liquid treatment, in particular to a heat pump evaporation treatment system and method for radioactive waste liquid treatment.
Background
With the progress of science and technology, nuclear energy is widely applied to various fields as clean energy with great popularization value. In the production process of nuclear energy, radioactive waste liquid is generated in the circulation process of nuclear fuel, and the radioactive waste liquid contains a small amount of radioactive nuclide and salt with different concentrations, so that the radioactive waste liquid has certain harm to human bodies and the environment, and therefore, the radioactive waste liquid needs to be purified before being discharged.
The method for treating the radioactive waste liquid at present is mainly an evaporation concentration method, and the method is characterized in that preheated radioactive waste liquid is sent into an evaporator, high-temperature steam is utilized to heat the evaporator, so that the radioactive waste liquid is separated into steam and concentrated liquid, the steam is directly discharged after being condensed, and the concentrated liquid is further treated.
Chinese patent CN204303367U discloses a low-level radioactive waste liquid treatment system, in which a steam compressor and an electric steam generator are provided, and heating steam can be provided for the evaporation process of the radioactive waste liquid by consuming electric energy without external steam supply, thereby having a better energy-saving effect.
However, in carrying out the present disclosure, the inventors have found that the electric steam generator in the above system has a problem of dry-burning of an empty tank or overflowing of a full tank.
Disclosure of Invention
The purpose of this disclosure is to solve the problem that the empty pot of electric steam generator dry combustion or full pot overflow that exists in the existing radioactive liquid waste treatment system, provides a heat pump evaporation processing system and method for radioactive liquid waste treatment.
In order to achieve the above object, the present disclosure provides a heat pump evaporation treatment system for radioactive liquid waste treatment, the system including a first preheater having a first raw liquid chamber and a first preheating chamber, a second preheater having a second raw liquid chamber and a second preheating chamber, an evaporator having an evaporation chamber and a heating chamber, a vapor compressor, an electric vapor generator, and a condensate control device;
the first raw liquid chamber, the second raw liquid chamber, the evaporation chamber and the steam compressor are sequentially communicated, an outlet of the steam compressor and a compensation steam outlet of the electric steam generator are respectively communicated with an inlet of the heating chamber, a steam outlet of the heating chamber is communicated with an inlet of the second preheating chamber, a condensate outlet of the heating chamber and an outlet of the second preheating chamber are respectively communicated with a condensate inlet of the electric steam generator, and a condensate outlet of the electric steam generator is communicated with an inlet of the first preheating chamber;
wherein the condensate control device comprises:
a condensate flow regulating valve arranged between a condensate outlet of the electric steam generator and an inlet of the first preheating chamber and used for regulating the flow of the steam condensate entering the first preheating chamber;
the liquid level sensor is arranged in the electric steam generator and used for measuring the liquid level in the electric steam generator; and
and the controller is respectively connected with the condensate flow regulating valve and the liquid level sensor and is used for acquiring the actual liquid level in the electric steam generator from the liquid level sensor, and regulating the opening degree of the condensate flow regulating valve based on the actual liquid level so as to regulate the flow of the steam condensate entering the first preheating chamber.
Optionally, the system further comprises a feed tank, a purification tower, a hot water pump and an external discharge pipe;
an outlet of the feeding groove is communicated with an inlet of the first raw liquid chamber;
the purification tower is arranged between the evaporation chamber and the vapor compressor, an inlet of the purification tower is communicated with an outlet of the evaporation chamber, and an outlet of the purification tower is communicated with an inlet of the vapor compressor;
the hot water pump is arranged between the electric steam generator and the first preheating chamber, an inlet of the hot water pump is communicated with a condensate outlet of the electric steam generator, and an outlet of the hot water pump is communicated with an inlet of the first preheating chamber and is used for conveying steam condensate in the electric steam generator into the first preheating chamber;
the outer discharge pipeline is communicated with an outlet of the first preheating chamber.
The present disclosure also provides a method of treating radioactive waste using the system of any of the above, the method comprising:
acquiring an actual liquid level in the electric steam generator from the liquid level sensor by using the controller;
comparing the actual liquid level with a preset liquid level;
under the condition that the actual liquid level is lower than the preset liquid level, controlling the condensate flow regulating valve by using the controller to reduce the opening degree of the condensate flow regulating valve;
and under the condition that the actual liquid level is higher than the preset liquid level, the controller is utilized to control the condensate flow regulating valve so as to increase the opening degree of the condensate flow regulating valve.
Optionally, the preset liquid level is 50-65%, preferably 55-60% of the inner depth of the electric steam generator.
Optionally, when the opening degree of the condensate flow regulating valve is regulated, the regulating range is that the total opening degree of the condensate flow regulating valve is 25-35%.
Optionally, the method further comprises:
sequentially feeding radioactive waste liquid to be treated into a first raw liquid chamber of the first preheater and a second raw liquid chamber of the second preheater for preheating treatment;
the preheated radioactive waste liquid enters an evaporation chamber of the evaporator for evaporation treatment to obtain secondary steam and concentrated waste liquid;
the secondary steam enters the steam compressor to be pressurized and heated to obtain high-temperature steam, and the high-temperature steam is used as a heat source to return to a heating chamber of the evaporator for heat exchange;
feeding the high-temperature steam which is not condensed in the heating chamber and the non-condensable gas into a second preheating chamber of the second preheater as heat sources for heat exchange;
respectively feeding steam condensate generated by heat exchange in the heating chamber and steam condensate generated by heat exchange in the second preheating chamber into the electric steam generator;
evaporating part of steam condensate in the electric steam generator to obtain compensation steam, and enabling the compensation steam to enter a heating chamber of the evaporator as a heat source for heat exchange;
and part of steam condensate in the electric steam generator is used as a heat source to enter a first preheating chamber of the first preheater for heat exchange, and the steam condensate after heat exchange is discharged from an outlet of the first preheating chamber.
Optionally, after being preheated by the first preheater, the temperature of the radioactive waste liquid is increased to 70 ℃ to 85 ℃, and after being preheated by the second preheater, the temperature of the radioactive waste liquid is increased to 90 ℃ to 98 ℃.
Optionally, after the pressurization and temperature rise treatment is performed by the steam compressor, the pressure of the high-temperature steam is 50kPa to 80kPa, and the temperature is 110 ℃ to 120 ℃.
Optionally, the temperature of the steam condensate entering the first preheating chamber from the electric steam generator is 110 ℃ to 120 ℃;
the temperature of the steam condensate discharged from the outlet of the first preheating chamber is 40 ℃ to 55 ℃.
Optionally, the temperature of the compensation steam is 110 ℃ to 120 ℃.
Through above-mentioned technical scheme, be equipped with condensate controlling means among the heat pump evaporation treatment system that this disclosure provided, actual liquid level in can the real-time supervision electric steam generator, and based on actual liquid level adjusts the flow of the steam condensate of play electric steam generator, and this can effectively avoid the appearance of electric steam generator empty can dry combustion or full jar overflow scheduling problem, is favorable to prolonging the life of equipment.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 schematically illustrates a schematic structural diagram of a heat pump evaporation treatment system for radioactive liquid waste treatment according to an embodiment of the present disclosure;
FIG. 2 schematically illustrates a structural schematic of a condensate treatment flow path according to an embodiment of the present disclosure.
Description of the reference numerals
1 first preheater 2 second preheater
3 evaporator 4 purifying tower
5 steam compressor 6 electric steam generator
7 condensate flow control valve 8 outer discharge pipeline
9 feeding groove and 10 hot water pump
11 liquid level sensor 12 controller
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 schematically shows a schematic structural diagram of a heat pump evaporation treatment system for radioactive liquid waste treatment according to an embodiment of the present disclosure.
As shown in fig. 1, the system may include a first preheater 1 having a first raw liquid chamber and a first preheating chamber, a second preheater 2 having a second raw liquid chamber and a second preheating chamber, an evaporator 3 having an evaporation chamber and a heating chamber, a vapor compressor 5, an electric vapor generator 6, and a condensate control device.
The first raw liquid chamber, the second raw liquid chamber, the evaporation chamber and the vapor compressor 5 are sequentially communicated, an outlet of the vapor compressor 5 and a compensation vapor outlet of the electric vapor generator 6 are respectively communicated with an inlet of the heating chamber, a vapor outlet of the heating chamber is communicated with an inlet of the second preheating chamber, a condensate outlet of the heating chamber and an outlet of the second preheating chamber are respectively communicated with a condensate inlet of the electric vapor generator 6, and a condensate outlet of the electric vapor generator 6 is communicated with an inlet of the first preheating chamber.
In the present disclosure, specifically, the first raw liquid chamber, the second raw liquid chamber, and the evaporation chamber constitute a waste liquid treatment flow path for performing a preheating treatment and an evaporation treatment on the radioactive waste liquid; the steam compressor, the heating chamber and the second preheating chamber form a steam treatment flow path for providing heating steam for preheating and evaporating the radioactive waste liquid; the electric steam generator and the first preheating chamber form a condensate treatment flow path for providing preheating water for presetting the radioactive waste liquid and discharging cooled steam condensate.
The radioactive waste liquid enters from an inlet of the first stock solution chamber, is preheated by the first stock solution chamber and the second stock solution chamber in sequence, enters an evaporation chamber of the evaporator and is evaporated in the evaporation chamber to generate secondary steam; the secondary steam enters a steam compressor and is pressurized and heated in the steam compressor to become high-temperature steam; the high-temperature steam enters a heating chamber of the evaporator for heat exchange to provide heat for the evaporation process of the radioactive waste liquid in the evaporation chamber, and the high-temperature steam after heat exchange is condensed into steam condensate to enter an electric steam generator; part of uncondensed high-temperature steam and non-condensable gas in the evaporation chamber enter a second preheating chamber for heat exchange to provide heat for preheating the radioactive waste liquid in the second stock solution chamber, steam condensate generated by heat exchange enters an electric steam generator, and the non-condensable gas is directly discharged from the second preheating chamber; one part of the steam condensate entering the electric steam generator is heated and boiled to generate compensation steam, and the other part of the steam condensate enters the first preheating chamber to provide heat for preheating the radioactive waste liquid in the first stock solution chamber; and the compensation steam generated in the electric steam generator enters a heating chamber of the evaporator for heat exchange, and the steam condensate in the first preheating chamber is directly discharged after heat exchange.
FIG. 2 schematically illustrates a structural schematic of a condensate treatment flow path according to an embodiment of the present disclosure. As shown in fig. 2, the condensate treatment flow path is composed of the electric steam generator 5 and the first preheating chamber of the first preheater 1, and the condensate treatment flow path is provided with a condensate control device, including: a condensate flow regulating valve 7, which is arranged between the condensate outlet of the electric steam generator 6 and the inlet of the first preheating chamber, and is used for regulating the flow of the steam condensate entering the first preheating chamber; a liquid level sensor 11 disposed in the electric steam generator 6 for measuring a liquid level in the electric steam generator 6; and the controller 12 is connected with the condensate flow regulating valve 7 and the liquid level sensor 11 respectively, and is used for acquiring the actual liquid level in the electric steam generator 6 from the liquid level sensor 11, and regulating the opening degree of the condensate flow regulating valve 7 based on the actual liquid level so as to regulate the flow of the steam condensate entering the first preheating chamber.
Through the technical scheme, the heat pump evaporation treatment system at least has the following beneficial effects:
(1) the heat pump evaporation treatment system uses secondary steam generated by waste liquid evaporation treatment as heating steam required by the waste liquid evaporation treatment, and the heating steam is converted into steam condensate which can be directly discharged in the process of providing heat for the waste liquid evaporation treatment, so that a steam condensing device is not required to be arranged, the steam heat is recycled, and the heat pump evaporation treatment system has the advantages of low consumption and energy saving;
(2) the liquid level sensor used for monitoring the liquid level height in the electric steam generator is arranged, the condensate flow regulating valve used for controlling the steam condensate outflow in the electric steam generator is arranged, the liquid level sensor and the condensate flow control valve are automatically associated, the control mode of regulating the steam condensate outflow according to the liquid level of the electric steam generator is realized, and the problem that the liquid level of the electric steam generator is low or high due to large or small outflow of the steam condensate can be effectively avoided.
Specifically, the first preheater preheats the radioactive waste liquid in a water-water heat exchange mode, the heat source is steam condensate in the first preheating chamber, and the steam condensate in the first preheating chamber can be directly discharged after heat exchange. The radioactive waste liquid is evaporated in the evaporation chamber of the evaporator to generate secondary steam, the steam is condensed into steam condensate in the evaporation chamber of the evaporator and the second preheating chamber of the second preheater, the input quantity of the radioactive waste liquid is equal to the evaporation quantity of the radioactive waste liquid in a normal state, the evaporation quantity of the radioactive waste liquid is equal to the reflux quantity of the steam condensate, and the reflux quantity of the steam condensate is equal to the output quantity of the steam condensate, namely under the condition that the concentrated waste liquid in the evaporator is not considered for discharging, the input quantity of the radioactive waste liquid is equal to the output quantity of the steam condensate, so that the output quantity of the steam condensate is generally required to be controlled in order to ensure the stable operation of the system.
However, in the operation process of the system, the evaporation amount of the radioactive waste liquid may fluctuate, when the evaporation amount is relatively low, the reflux amount of the steam condensate is relatively low, and if the steam condensate is still output according to the previous output amount, the liquid level of the electric steam generator is continuously reduced, and finally the electric steam generator is empty, and the electric heating element is exposed and dried; when the evaporation amount is higher, the reflux amount of the steam condensate is higher, if the steam condensate is still output according to the previous output amount, the liquid level of the electric steam generator is continuously increased, and finally, the space in the electric steam generator is reduced or even disappears, so that the compensation steam generated by the electric steam generator is further reduced, and the sufficient heating steam cannot be provided for the electric steam heating chamber, thereby affecting the treatment effect of the system. The liquid level of the electric steam generator is kept unchanged by adjusting the output quantity of the steam condensate, and the problems can be effectively solved.
In addition, the preheating capacity of first pre-heater is fixed unchangeable, and it is equal with the indoor radioactive liquid waste's of first stoste volume to set up to the indoor steam condensate of first preheating usually, and first pre-heater can preheat the radioactive liquid waste to predetermineeing the temperature, consequently, this disclosure controls the output quantity of steam condensate, can also ensure the steady operation of first pre-heater, ensures that first pre-heater can preheat the radioactive liquid waste who gets into wherein to predetermineeing the temperature.
According to the present disclosure, the system may further include a feed tank 9, a purification tower 4, a hot water pump 10, and an external discharge pipe 8; the outlet of the feeding groove 9 is communicated with the inlet of the first raw liquid chamber; the purification tower 4 is arranged between the evaporation chamber and the vapor compressor 5, an inlet of the purification tower 4 is communicated with an outlet of the evaporation chamber, and an outlet of the purification tower 4 is communicated with an inlet of the vapor compressor 5; the hot water pump 10 is arranged between the electric steam generator 6 and the first preheating chamber, the inlet of the hot water pump 10 is communicated with the condensate outlet of the electric steam generator 6, and the outlet of the hot water pump 10 is communicated with the inlet of the first preheating chamber, so that the steam condensate in the electric steam generator 6 is fed into the first preheating chamber; the outer discharge pipe 8 is communicated with the outlet of the first preheating chamber.
According to the present disclosure, a first filter screen may be disposed at an outlet of the evaporation chamber, a second filter screen may be disposed in the purification tower 4, and the secondary steam from the evaporation chamber enters the vapor compressor 5 after passing through the first filter screen and the second filter screen.
The first filter screen and the second filter screen can effectively remove water drops which are carried in steam and do not reach the emission standard, and the water drops are prevented from being discharged to the outside through the steam treatment flow path and the condensate treatment flow path.
The present disclosure also provides a method of treating radioactive waste using the system of any of the above, which may include: acquiring an actual liquid level in the electric steam generator from the liquid level sensor by using the controller; comparing the actual liquid level with a preset liquid level; under the condition that the actual liquid level is lower than the preset liquid level, controlling the condensate flow regulating valve by using the controller to reduce the opening degree of the condensate flow regulating valve; and under the condition that the actual liquid level is higher than the preset liquid level, the controller is utilized to control the condensate flow regulating valve so as to increase the opening degree of the condensate flow regulating valve.
In the present disclosure, in particular, the opening degree of the condensate flow regulating valve may be automatically adjusted by a controller commonly used in the art, such as a programmable logic controller (PLC system). The reduction or increase of the opening of the condensate flow regulating valve can be determined according to actual needs, and details are not repeated in the disclosure.
According to the present disclosure, the preset liquid level may be 50 to 65%, preferably 55 to 60%, of the depth inside the electric steam generator. This is disclosed sets for the fixed value with the liquid level in the electric steam generator to liquid level change in the electric steam generator regulates and control steam condensate's output quantity, makes steam condensate's output quantity gradually equal to its backward flow volume, thereby makes the system operation tend to stable, and this can be under the condition of guaranteeing electric steam generator steady operation all the time, adjusts the performance and the operating stability of system, and this is favorable to the long-term steady operation of guarantee system.
According to the disclosure, when the opening degree of the condensate flow regulating valve is regulated, the regulating range can be 25-35% of the total opening degree of the condensate flow regulating valve.
Optionally, the method may further include: sequentially feeding radioactive waste liquid to be treated into a first raw liquid chamber of the first preheater and a second raw liquid chamber of the second preheater for preheating treatment; the preheated radioactive waste liquid enters an evaporation chamber of the evaporator for evaporation treatment to obtain secondary steam and concentrated waste liquid; the secondary steam enters the steam compressor to be pressurized and heated to obtain high-temperature steam, and the high-temperature steam is used as a heat source to return to a heating chamber of the evaporator for heat exchange; feeding the high-temperature steam which is not condensed in the heating chamber and the non-condensable gas into a second preheating chamber of the second preheater as heat sources for heat exchange; respectively feeding steam condensate generated by heat exchange in the heating chamber and steam condensate generated by heat exchange in the second preheating chamber into the electric steam generator; evaporating part of steam condensate in the electric steam generator to obtain compensation steam, and enabling the compensation steam to enter a heating chamber of the evaporator as a heat source for heat exchange; and part of steam condensate in the electric steam generator is used as a heat source to enter a first preheating chamber of the first preheater for heat exchange, and the steam condensate after heat exchange is discharged from an outlet of the first preheating chamber.
According to the present disclosure, the temperature of the radioactive waste liquid is raised to 70 to 85 ℃ after being preheated by the first preheater, and the temperature of the radioactive waste liquid is raised to 90 to 98 ℃ after being preheated by the second preheater.
According to the disclosure, after the pressurization and temperature rise treatment is performed by the steam compressor, the pressure of the high-temperature steam may be 50kPa to 80kPa, and the temperature may be 110 ℃ to 120 ℃.
According to the present disclosure, the temperature of the steam condensate entering the first preheating chamber from the electric steam generator may be 110 ℃ to 120 ℃; the temperature of the vapour condensate discharged from the outlet of the first preheating chamber may be between 40 ℃ and 55 ℃.
According to the present disclosure, the temperature of the compensation steam may be 110 ℃ to 120 ℃.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1.一种用于放射性废液处理的热泵蒸发处理系统,其特征在于,该系统包括第一预热器、第二预热器、蒸发器、蒸汽压缩机、电蒸汽发生器和冷凝液控制装置,所述第一预热器具有第一原液室和第一预热室,所述第二预热器具有第二原液室和第二预热室,所述蒸发器具有蒸发室和加热室;1. a heat pump evaporation treatment system for radioactive waste liquid treatment, is characterized in that, this system comprises first preheater, second preheater, evaporator, steam compressor, electric steam generator and condensate control The first preheater has a first raw liquid chamber and a first preheating chamber, the second preheater has a second raw liquid chamber and a second preheating chamber, and the evaporator has an evaporation chamber and a heating chamber ; 所述第一原液室、所述第二原液室、所述蒸发室和所述蒸汽压缩机依次连通,所述蒸汽压缩机的出口以及所述电蒸汽发生器的补偿蒸汽出口分别与所述加热室的入口连通,所述加热室的蒸汽出口与所述第二预热室的入口连通,所述加热室的冷凝液出口以及所述第二预热室的出口分别与所述电蒸汽发生器的冷凝液入口连通,所述电蒸汽发生器的冷凝液出口与所述第一预热室的入口连通;The first raw liquid chamber, the second raw liquid chamber, the evaporation chamber and the steam compressor are communicated in sequence, and the outlet of the steam compressor and the compensation steam outlet of the electric steam generator are respectively connected with the heater. The inlet of the chamber is communicated with the inlet of the second preheating chamber, the steam outlet of the heating chamber is communicated with the inlet of the second preheating chamber, the condensate outlet of the heating chamber and the outlet of the second preheating chamber are respectively connected with the electric steam generator The condensate inlet of the electric steam generator is communicated with the condensate outlet of the electric steam generator, and the condensate outlet of the electric steam generator is communicated with the inlet of the first preheating chamber; 其中,所述冷凝液控制装置包括:Wherein, the condensate control device includes: 冷凝液流量调节阀,设置于所述电蒸汽发生器的冷凝液出口与所述第一预热室的入口之间,用于对进入所述第一预热室中的所述蒸汽冷凝液的流量进行调节;The condensate flow regulating valve is arranged between the condensate outlet of the electric steam generator and the inlet of the first preheating chamber, and is used to control the flow of the steam condensate entering the first preheating chamber. flow regulation; 液位传感器,设置于所述电蒸汽发生器中,用于测量对所述电蒸汽发生器中的液位;以及a liquid level sensor, disposed in the electric steam generator, for measuring the liquid level in the electric steam generator; and 控制器,分别与所述冷凝液流量调节阀和所述液位传感器连接,用于从所述液位传感器处获取所述电蒸汽发生器内的实际液位,并基于所述实际液位,对所述冷凝液流量调节阀的开度进行调节,以对进入所述第一预热室中的所述蒸汽冷凝液的流量进行调节。a controller, connected to the condensate flow control valve and the liquid level sensor respectively, for acquiring the actual liquid level in the electric steam generator from the liquid level sensor, and based on the actual liquid level, The opening degree of the condensate flow regulating valve is adjusted to adjust the flow rate of the steam condensate entering the first preheating chamber. 2.根据权利要求1所述的系统,其特征在于,所述系统还包括供料槽、净化塔、热水泵和外排管道;2. The system according to claim 1, wherein the system further comprises a feed tank, a purification tower, a hot water pump and an external discharge pipeline; 所述供料槽的出口与所述第一原液室的入口连通;The outlet of the feeding tank is communicated with the inlet of the first raw liquid chamber; 所述净化塔设置在所述蒸发室和所述蒸汽压缩机之间,所述净化塔的入口与所述蒸发室的出口连通,所述净化塔的出口与所述蒸汽压缩机的入口连通;The purification tower is arranged between the evaporation chamber and the steam compressor, the inlet of the purification tower is communicated with the outlet of the evaporation chamber, and the outlet of the purification tower is communicated with the inlet of the steam compressor; 所述热水泵设置在所述电蒸汽发生器和所述第一预热室之间,所述热水泵的入口与所述电蒸汽发生器的冷凝液出口连通,所述热水泵的出口与所述第一预热室的入口连通,用于将所述电蒸汽发生器中的蒸汽冷凝液送入所述第一预热室中;The hot water pump is arranged between the electric steam generator and the first preheating chamber, the inlet of the hot water pump is communicated with the condensate outlet of the electric steam generator, and the outlet of the hot water pump is connected to the The inlet of the first preheating chamber is communicated for sending the steam condensate in the electric steam generator into the first preheating chamber; 所述外排管道与所述第一预热室的出口连通。The outer discharge pipe communicates with the outlet of the first preheating chamber. 3.采用权利要求1或2所述的系统处理放射性废液的方法,其特征在于,该方法包括:3. The method for treating radioactive waste liquid using the system according to claim 1 or 2, characterized in that, the method comprises: 利用所述控制器从所述液位传感器处获取所述电蒸汽发生器内的实际液位;Use the controller to obtain the actual liquid level in the electric steam generator from the liquid level sensor; 将所述实际液位与预设液位进行比对;comparing the actual liquid level with the preset liquid level; 在所述实际液位低于所述预设液位的情况下,利用所述控制器控制所述冷凝液流量调节阀以减小所述冷凝液流量调节阀的开度;When the actual liquid level is lower than the preset liquid level, use the controller to control the condensate flow control valve to reduce the opening of the condensate flow control valve; 在所述实际液位高于所述预设液位的情况下,利用所述控制器控制所述冷凝液流量调节阀以增大所述冷凝液流量调节阀的开度。When the actual liquid level is higher than the preset liquid level, the controller is used to control the condensate flow control valve to increase the opening degree of the condensate flow control valve. 4.根据权利要求3所述的方法,其特征在于,4. The method of claim 3, wherein 所述预设液位为所述电蒸汽发生器内部深度的50~65%,优选为55~60%。The preset liquid level is 50-65% of the inner depth of the electric steam generator, preferably 55-60%. 5.根据权利要求3所述的方法,其特征在于,在对所述冷凝液流量调节阀的开度进行调节时,调节幅度为所述冷凝液流量调节阀总开度为25~35%。5 . The method according to claim 3 , wherein when adjusting the opening of the condensate flow regulating valve, the adjustment range is 25-35% of the total opening of the condensate flow regulating valve. 6 . 6.根据权利要求3~5中任意一项所述的方法,其特征在于,所述方法还包括:6. The method according to any one of claims 3 to 5, wherein the method further comprises: 将待处理的放射性废液依次送入所述第一预热器的第一原液室和所述第二预热器的第二原液室中进行预热处理;The radioactive waste liquid to be treated is sequentially sent into the first stock solution chamber of the first preheater and the second stock solution chamber of the second preheater for preheating treatment; 使预热后的所述放射性废液进入所述蒸发器的蒸发室中进行蒸发处理,得到二次蒸汽和浓缩废液;Entering the preheated radioactive waste liquid into the evaporation chamber of the evaporator for evaporation treatment to obtain secondary steam and concentrated waste liquid; 使所述二次蒸汽进入所述蒸汽压缩机中进行加压升温处理,得到高温蒸汽,并将所述高温蒸汽作为热源返回所述蒸发器的加热室中进行换热;Entering the secondary steam into the steam compressor for pressurization and heating treatment to obtain high-temperature steam, and returning the high-temperature steam as a heat source to the heating chamber of the evaporator for heat exchange; 将所述加热室中部分未冷凝的所述高温蒸汽和不凝气作为热源送入所述第二预热器的第二预热室中进行换热;Sending part of the uncondensed high-temperature steam and non-condensable gas in the heating chamber into the second preheating chamber of the second preheater as a heat source for heat exchange; 将所述加热室中换热产生的蒸汽冷凝液以及所述第二预热室中换热产生的蒸汽冷凝液分别送入所述电蒸汽发生器中;The steam condensate produced by heat exchange in the heating chamber and the steam condensate produced by heat exchange in the second preheating chamber are respectively sent to the electric steam generator; 使所述电蒸汽发生器中的部分蒸汽冷凝液进行蒸发得到补偿蒸汽,使所述补偿蒸汽作为热源进入所述蒸发器的加热室中进行换热;Evaporating part of the steam condensate in the electric steam generator to obtain compensation steam, and making the compensation steam enter the heating chamber of the evaporator as a heat source for heat exchange; 使所述电蒸汽发生器中的部分蒸汽冷凝液作为热源进入所述第一预热器的第一预热室中进行换热,换热后的蒸汽冷凝液从所述第一预热室的出口进行排放。Part of the steam condensate in the electric steam generator is used as a heat source to enter into the first preheating chamber of the first preheater for heat exchange, and the steam condensate after heat exchange is discharged from the first preheating chamber. Exit for discharge. 7.根据权利要求6所述的方法,其特征在于,经所述第一预热器预热后,所述放射性废液的温度升高至70℃~85℃,经所述第二预热器预热后,所述放射性废液的温度升高至90℃~98℃。7 . The method according to claim 6 , wherein after preheating by the first preheater, the temperature of the radioactive waste liquid is increased to 70°C-85°C, and after the second preheating After the reactor is preheated, the temperature of the radioactive waste liquid is raised to 90°C to 98°C. 8.根据权利要求6所述的方法,其特征在于,经所述蒸汽压缩机进行加压升温处理后,所述高温蒸汽的压力为50kPa~80kPa,温度为110℃~120℃。8 . The method according to claim 6 , wherein after the steam compressor is pressurized and heated, the pressure of the high-temperature steam is 50kPa~80kPa, and the temperature is 110°C~120°C. 9 . 9.根据权利要求6所述的方法,其特征在于,从所述电蒸汽发生器进入所述第一预热室的蒸汽冷凝液的温度为110℃~120℃;9. The method according to claim 6, wherein the temperature of the steam condensate entering the first preheating chamber from the electric steam generator is 110°C to 120°C; 从所述第一预热室的出口进行排放的蒸汽冷凝液的温度为40℃~55℃。The temperature of the steam condensate discharged from the outlet of the first preheating chamber is 40°C to 55°C. 10.根据权利要求6所述的方法,其特征在于,所述补偿蒸汽的温度为110℃~120℃。10 . The method according to claim 6 , wherein the temperature of the compensation steam is 110° C.˜120° C. 11 .
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115798768A (en) * 2023-01-04 2023-03-14 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN115910410A (en) * 2023-01-04 2023-04-04 中国原子能科学研究院 Method for treating radioactive waste liquid
CN116013570A (en) * 2023-01-04 2023-04-25 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN116092717A (en) * 2023-01-04 2023-05-09 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN116153551A (en) * 2023-01-04 2023-05-23 中国原子能科学研究院 Radioactive waste liquid treatment method and system

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB246697A (en) * 1925-04-06 1926-02-04 Theobald Henry Noll Improvements in electric steam generation
US3955358A (en) * 1974-08-08 1976-05-11 Westinghouse Electric Corporation Combined cycle electric power plant and a heat recovery steam generator with improved fluid level control therefor
JPH06160592A (en) * 1992-11-25 1994-06-07 Mitsubishi Heavy Ind Ltd Waste liquid evaporating processor
JP2989183B1 (en) * 1998-12-08 1999-12-13 核燃料サイクル開発機構 Calculating the liquid level of the evaporator during operation
JP2000000557A (en) * 1998-06-17 2000-01-07 Chubu Electric Power Co Inc Wastewater evaporative concentrator
CN202709070U (en) * 2012-03-02 2013-01-30 蓝昭凡 Circulation type electric steam generator
CN204303367U (en) * 2015-01-05 2015-04-29 中国原子能科学研究院 A kind of low-level Liquid Radwaste Treatment
CN105137957A (en) * 2015-06-23 2015-12-09 黄红林 Control method of nuclear power steam generator
KR101669131B1 (en) * 2016-01-25 2016-10-26 한국수력원자력 주식회사 A radioactive liquid waste treatment system
CN106348368A (en) * 2015-07-16 2017-01-25 中广核工程有限公司 Heat pump evaporation system and heat pump evaporation method used for processing low-activity liquid waste in nuclear plant
CN209116307U (en) * 2018-09-27 2019-07-16 郑州四维特种材料有限责任公司 A kind of small electrical steam generator system
CN214094413U (en) * 2020-11-27 2021-08-31 深圳市捷厨厨房设备有限公司 Small-size electric steam generator

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB246697A (en) * 1925-04-06 1926-02-04 Theobald Henry Noll Improvements in electric steam generation
US3955358A (en) * 1974-08-08 1976-05-11 Westinghouse Electric Corporation Combined cycle electric power plant and a heat recovery steam generator with improved fluid level control therefor
JPH06160592A (en) * 1992-11-25 1994-06-07 Mitsubishi Heavy Ind Ltd Waste liquid evaporating processor
JP2000000557A (en) * 1998-06-17 2000-01-07 Chubu Electric Power Co Inc Wastewater evaporative concentrator
JP2989183B1 (en) * 1998-12-08 1999-12-13 核燃料サイクル開発機構 Calculating the liquid level of the evaporator during operation
CN202709070U (en) * 2012-03-02 2013-01-30 蓝昭凡 Circulation type electric steam generator
CN204303367U (en) * 2015-01-05 2015-04-29 中国原子能科学研究院 A kind of low-level Liquid Radwaste Treatment
CN105137957A (en) * 2015-06-23 2015-12-09 黄红林 Control method of nuclear power steam generator
CN106348368A (en) * 2015-07-16 2017-01-25 中广核工程有限公司 Heat pump evaporation system and heat pump evaporation method used for processing low-activity liquid waste in nuclear plant
KR101669131B1 (en) * 2016-01-25 2016-10-26 한국수력원자력 주식회사 A radioactive liquid waste treatment system
CN209116307U (en) * 2018-09-27 2019-07-16 郑州四维特种材料有限责任公司 A kind of small electrical steam generator system
CN214094413U (en) * 2020-11-27 2021-08-31 深圳市捷厨厨房设备有限公司 Small-size electric steam generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
韩一丹 等: "放射性废物处理与整备关键技术研究进展", 原子能科学技术, vol. 54, no. 1, pages 137 - 142 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115798768A (en) * 2023-01-04 2023-03-14 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN115910410A (en) * 2023-01-04 2023-04-04 中国原子能科学研究院 Method for treating radioactive waste liquid
CN116013570A (en) * 2023-01-04 2023-04-25 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN116092717A (en) * 2023-01-04 2023-05-09 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN116153551A (en) * 2023-01-04 2023-05-23 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN115798768B (en) * 2023-01-04 2024-03-22 中国原子能科学研究院 Radioactive waste liquid treatment methods and systems
CN116013570B (en) * 2023-01-04 2024-03-22 中国原子能科学研究院 Radioactive waste liquid treatment methods and systems
CN116153551B (en) * 2023-01-04 2024-05-14 中国原子能科学研究院 Radioactive waste liquid treatment method and system
CN116092717B (en) * 2023-01-04 2024-05-14 中国原子能科学研究院 Radioactive liquid waste treatment method and system

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