阅读说明：本技术 一种含冷凝除湿的空气载带含氚废水系统 (Air carrying tritium-containing wastewater system containing condensation dehumidification ) 是由 程文龙 赵锐 杨博 许张敏 年永乐 于 2021-10-11 设计创作，主要内容包括：本发明涉及一种含冷凝除湿的空气载带含氚废水系统,属于乏燃料后处理技术领域。包括吸收式制冷冷凝除湿装置和高效微雾加湿装置。吸收式制冷冷凝除湿装置包括风机、除尘室、冷凝除湿器、风道加热器、热源、发生器、冷凝器、蒸发器、吸收器、中间换热器、第一节流阀、第一循环泵和第二节流阀。通过增设除湿装置,提高空气载带能力,由传统的“一步法”改变为“两步法”,从而提高系统在低温、高湿等恶劣环境下的运行性。吸收式制冷机构通过蒸发器的冷冻水保证除湿器处于较低的温度下运行,保证了除湿效果；高效微雾加湿采用分级加湿和微雾加湿相结合,通过多级加湿器形成含低放射性废液的湿空气,实现低放射性废液的高效载带。(The invention relates to a system for carrying tritium-containing wastewater by air containing condensation and dehumidification, and belongs to the technical field of spent fuel aftertreatment. Comprises an absorption refrigeration condensation dehumidifier and a high-efficiency micro-mist humidifier. The absorption type refrigeration, condensation and dehumidification device comprises a fan, a dust removal chamber, a condensation dehumidifier, an air duct heater, a heat source, a generator, a condenser, an evaporator, an absorber, an intermediate heat exchanger, a first throttle valve, a first circulating pump and a second throttle valve. The dehumidification device is additionally arranged, so that the air carrying capacity is improved, and the traditional one-step method is changed into a two-step method, so that the operability of the system in severe environments such as low temperature and high humidity is improved. The absorption refrigeration mechanism ensures that the dehumidifier operates at a lower temperature through the chilled water of the evaporator, so that the dehumidification effect is ensured; the efficient micro-fog humidification is combined with the staged humidification, and the multi-stage humidifier forms wet air containing the low-radioactivity waste liquid, so that the high-efficiency carrier belt of the low-radioactivity waste liquid is realized.)

1. The utility model provides an air that contains condensation dehumidification carries tritium-containing wastewater system which characterized in that: comprises an absorption refrigeration condensation dehumidification device and a high-efficiency micro-mist humidification device;

the absorption type refrigeration condensation dehumidification device comprises a fan (1), a dust removal chamber (2), a condensation dehumidifier (3), an air duct heater (4), a heat source (5), a generator (6), a condenser (7), an evaporator (8), an absorber (9), an intermediate heat exchanger (10), a first throttle valve (11), a first circulating pump (12) and a second throttle valve (13);

the micro-mist humidifying device comprises a micro-mist multi-nozzle array (14), a micro-mist humidifying tower (15), a liquid storage tank (16) and a second circulating pump (17);

wherein: an air duct inlet of the fan (1) is connected with an outdoor environment, an air duct outlet of the fan (1) is connected with an air duct inlet of the dust removal chamber (2), and an air duct outlet of the dust removal chamber (2) is connected with an air inlet of the condensation dehumidifier (3); the air outlet of the condensation dehumidifier (3) is connected with the air channel inlet of the air channel heater (4); a high-temperature cooling water vapor outlet of a solution tank of the generator (6) is communicated with a high-temperature cooling water vapor inlet of a condenser (7), a high-temperature concentrated solution outlet of the solution tank of the generator (6) is communicated with a high-temperature concentrated solution inlet of an intermediate heat exchanger (10), a high-pressure cooling water outlet of the condenser (7) is communicated with a high-pressure cooling water inlet of a second throttling valve (13), a low-pressure cooling water outlet of the second throttling valve (13) is communicated with a refrigerant water inlet of an evaporator (8), and a cooling water vapor outlet of the evaporator (8) is communicated with a cooling water vapor inlet of an absorber (9); the medium-temperature concentrated solution outlet of the intermediate heat exchanger (10) is communicated with the inlet of a first throttling valve (11), the outlet of the first throttling valve (11) is communicated with the medium-temperature concentrated solution inlet phase of an absorber (9), the low-temperature dilute solution outlet of the absorber (9) is communicated with the low-temperature dilute solution inlet of the intermediate heat exchanger (10) through a first circulating pump (12), and the medium-temperature dilute solution outlet of the intermediate heat exchanger (10) is communicated with the medium-temperature dilute solution inlet of a solution tank of a generator (6); a low-temperature chilled water outlet of the evaporator (8) is communicated with a low-temperature chilled water inlet of the condensation dehumidifier (3) and is connected with the low-temperature chilled water outlet of the condensation dehumidifier (3), and a high-temperature chilled water outlet of the condensation dehumidifier (3) is communicated with a high-temperature chilled water inlet of the evaporator (8);

a micro-mist multi-nozzle array (14) is arranged at the top in the micro-mist humidifying tower (15), a high-temperature dry air outlet of the air channel heater (4) is communicated with a high-temperature dry air inlet of the micro-mist humidifying tower (15), an air outlet at the top of the micro-mist humidifying tower (15) is communicated with the outdoor environment, an outlet at the bottom of the micro-mist humidifying tower (15) is communicated with an inlet of a liquid storage tank (17), and an outlet of the liquid storage tank (17) is communicated with the micro-mist multi-nozzle array (14) through a second circulating pump (16);

when the air conditioner works, ambient air enters the dust removal chamber (2) for dust removal through the fan (1), then enters the condensation dehumidifier (3) for deep condensation dehumidification, and the dehumidified low-temperature and low-humidity air passes through the air channel heater (4) to form high-temperature and low-humidity hot dry air; the hot dry air enters the micro-fog humidifying device, forms wet air containing low-radioactivity waste liquid through a multi-stage humidifier, and is discharged to the atmospheric environment.

2. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the solution used in the absorption refrigeration condensation dehumidification device is one of a lithium bromide solution and an ammonia water solution.

3. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the condensation dehumidifier (3) is a shell-and-tube heat exchanger.

4. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the air duct heater (4) is a steam type heater.

5. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the intermediate heat exchanger (10) is a shell-and-tube heat exchanger.

6. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the generator (6) comprises a heat source (5) and a solution tank, and the solution in the solution tank is evaporated by heating to generate refrigerant vapor.

7. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the heat source (5) is one of an electric heating boiler, a municipal heat pipe network, process steam, a gas boiler, a solar heat source and industrial waste heat.

8. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 1, characterized in that: the flowing directions of air and liquid in the micro-fog humidifying tower (15) adopt a counter-flow arrangement; the micro-fog humidifying tower (15) is divided into three stages, a high-pressure micro-fog nozzle array is laid at the lowest stage, and air is subjected to primary waste liquid carrying by micro-fog humidification; a high-pressure micro-mist nozzle array and an intermediate packing layer are laid in the intermediate stage, so that the waste liquid is fully carried by the air; the uppermost packing layer is laid at the uppermost stage to prevent liquid waste liquid from being wrapped.

9. The system for condensing and dehumidifying tritium-containing wastewater carried by air according to claim 8, characterized in that: the material of the middle packing layer and the material of the uppermost packing layer are both PP hexagonal honeycomb inclined tube materials.

Technical Field

The invention belongs to the technical field of spent fuel post-treatment, and particularly relates to an absorption refrigeration technology, a condensation dehumidification technology, an air carrying belt low-radioactivity waste liquid post-treatment technology and an air carrying belt technology.

Background

A typical process for spent fuel reprocessing employs a conventional Purex process. When the spent fuel core is dissolved by nitric acid, a large amount of tritium is dissolved by tritiated water (HTO) or tritiated acid (TNO)₃) Into the dissolution solution. About 5-10 m can be generated for each 1 ton of spent fuel³High-level solution. Evaporating and concentrating the high-level radioactive solution to release over 90% of tritium into condensate of secondary steam, and finally forming a large amount of 10⁷～10⁹Bq/L low-concentration tritium-containing wastewater. Tritium in tritium-containing wastewater exists in the form of HTO and is difficult to remove by conventional radionuclide removal means (such as adsorption, filtration, evaporation, ion exchange and the like), so the tritium-containing wastewater is generally treated by adopting a dilution discharge mode.

Internationally, the spent fuel post-treatment plant is usually built in the sea or around the great river, such as an arge post-treatment plant in france, and the tritium-containing wastewater can be directly diluted and discharged to the great river in the sea, thereby reducing the harm to the environment. Due to the special conditions of China, a post-treatment plant is usually built in a remote inland area, because the periphery of the post-treatment plant is lack of a water body with available strong dilution capability, tritium-containing wastewater is generally carried to the air by air after being vaporized, and the tritium content is diluted to be below a control limit value by utilizing the strong diffusivity of the air.

At present, the domestic technology for treating tritium-containing wastewater carried by air in a plant after spent fuel is based on the principle of air humidification, waste liquid to be treated is in direct contact with air to carry out heat and mass transfer, the waste liquid to be treated absorbs heat and evaporates to humidify unsaturated air, and the humidified air is discharged into the atmosphere. The existing technology based on the principle mainly comprises two schemes, namely a heating air cloth-hanging atmospheric carrying scheme and a high-pressure micro-mist atmospheric carrying scheme. The technical process of the heating air cloth hanging atmospheric carrier tape scheme is as follows: firstly, filtering sand and dust from air, then heating the air, blowing the heated air through a hanging cloth sprayed with tritium-containing wastewater under the suction of a centrifugal fan, so that the tritium-containing wastewater is absorbed and evaporated into the air, the moisture content of the air is increased, and finally humidified air is discharged through a chimney overhead. The existing high-pressure micro-mist atmospheric carrier tape scheme comprises the following process flows: the air is heated after being filtered to remove dust and dust, and flows through a micro-fog chamber under the suction of a centrifugal fan. In a micro-fog chamber, tritium-containing wastewater pumped to high pressure (4-7 MPa) passes through a nozzle array, is sprayed into air in a cloud form in the form of tritium-containing atomized particles with the particle size of 3-10 microns, absorbs heat in the air, changes from a liquid state to a gas state, increases the humidity in the air, reduces the air temperature, and finally discharges the humidified air to the high altitude through a chimney.

No matter the cloth hanging scheme or the high-pressure micro-fog scheme is adopted, the existing process for carrying tritium-containing wastewater by air has the following defects: under the low-temperature environmental condition in winter, the outdoor environmental temperature is far lower than the dew point temperature of the discharged air, and the tritium-containing wastewater cannot be effectively discharged; under a high-humidity environment, the moisture absorption capacity of carrier air is limited by the environmental humidity, so that the discharge efficiency under the high-humidity environment is not high, and the increasing amount of tritium-containing wastewater cannot be effectively coped with; the existing discharge strategy is to discharge the waste water at 1 ℃ lower than the ambient air temperature, lacks environmental adaptability, cannot adjust the discharge amount according to the change of the ambient temperature, when the ambient temperature rises, the carrying capacity of the air is not fully utilized, so that the discharge efficiency is low, and when the ambient temperature falls, the constant discharge temperature can cause precipitation; the system needs to consume a large amount of external energy, and the energy utilization efficiency is low. Therefore, the existing post-treatment system has low energy utilization efficiency and low humidification efficiency, the environmental temperature and humidity have great influence on the discharge of the tritium-containing wastewater, when the environmental temperature is less than 6 ℃ and the humidity is more than 80%, the moisture absorption capacity of air is very weak, so that the humidification effect is poor or even the tritium-containing wastewater cannot be humidified, the tritium-containing wastewater discharge facility is difficult to operate, and the operation period of a post-treatment plant is severely limited. Aiming at the problems, the invention develops a novel two-step method tritium-containing wastewater air-carried belt discharge process by combining an absorption type refrigeration condensation dehumidification air pretreatment technology with a high-efficiency atomization humidification technology, thereby being capable of stably operating under the conditions of low temperature and high humidity.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a system for carrying tritium-containing wastewater by air containing condensation and dehumidification.

The invention utilizes the absorption type refrigeration condensation dehumidification air pretreatment technology to dehumidify the environmental air with different temperature and humidity, the moisture content of the environmental air is greatly reduced after dehumidification, and then the environmental air is heated by the heater, so that the moisture absorption capacity of the environmental air is greatly improved.

A system for carrying tritium-containing wastewater with condensed and dehumidified air comprises an absorption refrigeration condensation dehumidifier and a high-efficiency micro-mist humidifier;

the absorption type refrigeration condensation dehumidifying device comprises a fan 1, a dust removing chamber 2, a condensation dehumidifier 3, an air channel heater 4, a heat source 5, a generator 6, a condenser 7, an evaporator 8, an absorber 9, an intermediate heat exchanger 10, a first throttle valve 11, a first circulating pump 12 and a second throttle valve 13;

the micro-mist humidifying device comprises a micro-mist multi-nozzle array 14, a micro-mist humidifying tower 15, a liquid storage tank 16 and a second circulating pump 17;

wherein: an air duct inlet of the fan 1 is connected with an outdoor environment, an air duct outlet of the fan 1 is connected with an air duct inlet of the dust chamber 2, and an air duct outlet of the dust chamber 2 is connected with an air inlet of the condensation dehumidifier 3; the air outlet of the condensation dehumidifier 3 is connected with the air flue inlet of the air flue heater 4; a high-temperature cooling water vapor outlet of a solution tank of the generator 6 is communicated with a high-temperature cooling water vapor inlet of a condenser 7, a high-temperature concentrated solution outlet of the solution tank of the generator 6 is communicated with a high-temperature concentrated solution inlet of an intermediate heat exchanger 10, a high-pressure cooling water outlet of the condenser 7 is communicated with a high-pressure cooling water inlet of a second throttling valve 13, a low-pressure cooling water outlet of the second throttling valve 13 is communicated with a refrigerant water inlet of an evaporator 8, and a cooling water vapor outlet of the evaporator 8 is communicated with a cooling water vapor inlet of an absorber 9; the medium-temperature concentrated solution outlet of the intermediate heat exchanger 10 is communicated with the inlet of a first throttling valve 11, the outlet of the first throttling valve 11 is communicated with the medium-temperature concentrated solution inlet phase of an absorber 9, the low-temperature dilute solution outlet of the absorber 9 is communicated with the low-temperature dilute solution inlet of the intermediate heat exchanger 10 through a first circulating pump 12, and the medium-temperature dilute solution outlet of the intermediate heat exchanger 10 is communicated with the medium-temperature dilute solution inlet of a solution tank of the generator 6; a low-temperature chilled water outlet of the evaporator 8 is communicated with a low-temperature chilled water inlet of the condensation dehumidifier 3, and a high-temperature chilled water outlet of the condensation dehumidifier 3 is communicated with a high-temperature chilled water inlet of the evaporator 8;

the inner top of the micro-fog humidifying tower 15 is provided with a micro-fog multi-nozzle array 14, a high-temperature dry air outlet of the air channel heater 4 is communicated with a high-temperature dry air inlet of the micro-fog humidifying tower 15, an air outlet at the top of the micro-fog humidifying tower 15 is communicated with the outdoor environment, an outlet at the bottom of the micro-fog humidifying tower 15 is communicated with an inlet of a liquid storage tank 17, and an outlet of the liquid storage tank 17 is communicated with the micro-fog multi-nozzle array 14 through a second circulating pump 16;

when the air conditioner works, ambient air enters the dust removal chamber 2 for dust removal through the fan 1, then enters the condensation dehumidifier 3 for deep condensation dehumidification, and the dehumidified low-temperature and low-humidity air passes through the air channel heater 4 to form high-temperature and low-humidity hot dry air; the hot dry air enters the micro-fog humidifying device, forms wet air containing low-radioactivity waste liquid through a multi-stage humidifier, and is discharged to the atmospheric environment.

The further concrete technical scheme is as follows:

the solution used in the absorption refrigeration condensation dehumidification device is one of a lithium bromide solution and an ammonia water solution.

The condensation dehumidifier 3 is a shell-and-tube heat exchanger.

The air duct heater 4 is a steam type heater.

The intermediate heat exchanger 10 is a shell-and-tube heat exchanger.

The generator 6 includes a heat source 5 and a solution tank, and evaporates a solution in the solution tank by heating to generate a refrigerant vapor.

The heat source 5 is one of an electric boiler, a municipal heat pipe network, process steam, a gas boiler, a solar heat source and industrial waste heat.

The flow directions of air and liquid in the micro-mist humidifying tower 15 are arranged in a counter-flow manner; the micro-mist humidifying tower 15 is divided into three stages, a high-pressure micro-mist nozzle array is laid on the lowest stage, and air is subjected to primary waste liquid carrying by micro-mist humidification; a high-pressure micro-mist nozzle array and an intermediate packing layer are laid in the intermediate stage, so that the waste liquid is fully carried by the air; the uppermost packing layer is laid at the uppermost stage to prevent liquid waste liquid from being wrapped.

The material of the middle packing layer and the material of the uppermost packing layer are both PP hexagonal honeycomb inclined tube materials.

The working mechanism of the invention is illustrated as follows:

a condensation and dehumidification device is arranged at the front end of the dust removal device, ambient air enters a dust removal chamber 2 from a fan 1 for dust removal, the temperature of the ambient air is reduced to be below a dew point temperature by low-temperature chilled water in the condensation and dehumidification device, condensed water is separated out from the ambient air, and the moisture content is reduced; the dehumidified low-temperature and low-humidity air passes through the air channel heater 4 and is heated by hot steam to form high-temperature and low-humidity hot dry air; the dehumidified and heated hot dry air enters the micro-mist humidifying device, finally forms humid air containing low-radioactivity waste liquid through a multi-stage humidifier, and is discharged to the atmospheric environment. The condensation dehydrating unit who adds has reduced the moisture content of ambient air, has increased ambient air's moisture absorption capacity among the multistage humidifier, has increased humidification efficiency, has promoted the device to the volume of carrying of tritium-containing waste water.

Compared with the prior art, the beneficial technical effects of the invention are embodied in the following aspects:

1. according to the invention, the dehumidification device is additionally arranged, so that the air carrying capacity is improved, and the traditional one-step method is changed into a two-step method, so that the operability of the system in severe environments such as low temperature, high humidity and the like is improved. Theoretical calculation proves that the beneficial effects of the invention are exemplified by the refrigeration system solution as the lithium bromide solution with the initial concentration of 60 percent and the typical environmental conditions of the compound fertilizer in summer. The moisture content of the ambient air with the moisture content of 16 g/kg in the device is dehumidified to be in a low-humidity state of 5 g/kg in the solution dehumidifying system, and compared with the moisture content of the ambient air before the solution dehumidifying system is additionally arranged, the moisture content is reduced by 68.8%, so that the moisture absorption capacity of the ambient air is effectively improved, and the system can operate in a high-humidity environment.

2. The invention adopts a mode of combining a high-efficiency micro-fog humidifying tower with a multi-nozzle micro-fog array to spray tritium-containing wastewater into hot dry air in the form of micron-sized liquid drops, and realizes graded arrangement of the humidifying tower, air realizes multi-stage humidification in the micro-fog humidifying tower, and simultaneously filler arranged in the tower increases the contact area of the air and the waste liquid, the humidifying efficiency is improved by 19.7 percent compared with the prior art, and the humidifying efficiency is 400 m³The carrying capacity of the tritium-containing wastewater under the condition of wind per hour can reach 7.2kg/h, which is 22.3 percent higher than that of the existing wastewater.

3. Compared with the traditional device for carrying the waste liquid by the air, the air channel heater and the heat source of the absorption refrigeration can be heated by industrial waste heat, waste heat or solar energy, so that the device is a good clean, environment-friendly and renewable energy utilization mode, and has good popularization value and application prospect.

Drawings

FIG. 1 is a schematic diagram of the aftertreatment system of the invention.

Number in fig. 1: the device comprises a fan 1, a dust removal chamber 2, a condensation dehumidifier 3, an air duct heater 4, a heat source 5, a generator 6, a condenser 7, an evaporator 8, an absorber 9, an intermediate heat exchanger 10, a first throttle valve 11, a first circulating pump 12, a second throttle valve 13, a micro-mist multi-nozzle array 14, a micro-mist humidifying tower 15, a second circulating pump 16, a liquid storage tank 17, an absorption type refrigeration condensation dehumidifying device I and a high-efficiency micro-mist humidifying device II.

Detailed Description

The present invention is further illustrated by the following description in conjunction with the accompanying drawings and the specific embodiments, it is to be understood that these examples are given solely for the purpose of illustration and are not intended as a definition of the limits of the invention, since various equivalent modifications will occur to those skilled in the art upon reading the present invention and fall within the limits of the appended claims.

Examples

Referring to fig. 1, a system for carrying tritium-containing wastewater by air containing condensation and dehumidification comprises an absorption refrigeration condensation and dehumidification device and a high-efficiency micro-mist humidification device.

The absorption type refrigeration condensation dehumidifying device comprises a fan 1, a dust removing chamber 2, a condensation dehumidifier 3, an air channel heater 4, a heat source 5, a generator 6, a condenser 7, an evaporator 8, an absorber 9, an intermediate heat exchanger 10, a first throttle valve 11, a first circulating pump 12 and a second throttle valve 13;

the micro-mist humidifying device comprises a micro-mist multi-nozzle array 14, a micro-mist humidifying tower 15, a liquid storage tank 16 and a second circulating pump 17.

The specific connection relationship of each device is explained in detail as follows:

an air duct inlet of the fan 1 is connected with an outdoor environment, an air duct outlet of the fan 1 is connected with an air duct inlet of the dust chamber 2, and an air duct outlet of the dust chamber 2 is connected with an air inlet of the condensation dehumidifier 3; the air outlet of the condensation dehumidifier 3 is connected with the air flue inlet of the air flue heater 4; a high-temperature cooling water vapor outlet of a solution tank of the generator 6 is communicated with a high-temperature cooling water vapor inlet of a condenser 7, a high-temperature concentrated solution outlet of the solution tank of the generator 6 is communicated with a high-temperature concentrated solution inlet of an intermediate heat exchanger 10, a high-pressure cooling water outlet of the condenser 7 is communicated with a high-pressure cooling water inlet of a second throttling valve 13, a low-pressure cooling water outlet of the second throttling valve 13 is communicated with a refrigerant water inlet of an evaporator 8, and a cooling water vapor outlet of the evaporator 8 is communicated with a cooling water vapor inlet of an absorber 9; the medium-temperature concentrated solution outlet of the intermediate heat exchanger 10 is communicated with the inlet of a first throttling valve 11, the outlet of the first throttling valve 11 is communicated with the medium-temperature concentrated solution inlet phase of an absorber 9, the low-temperature dilute solution outlet of the absorber 9 is communicated with the low-temperature dilute solution inlet of the intermediate heat exchanger 10 through a first circulating pump 12, and the medium-temperature dilute solution outlet of the intermediate heat exchanger 10 is communicated with the medium-temperature dilute solution inlet of a solution tank of the generator 6; the low-temperature chilled water outlet of the evaporator 8 is communicated with the low-temperature chilled water inlet of the condensation dehumidifier 3 to be connected, and the high-temperature chilled water outlet of the condensation dehumidifier 3 is communicated with the high-temperature chilled water inlet of the evaporator 8.

The solution used in the absorption refrigeration condensation dehumidification device is a lithium bromide solution.

The condensation dehumidifier 3 is a shell-and-tube heat exchanger, the air flue heater 4 is a steam heater, and the intermediate heat exchanger 10 is a shell-and-tube heat exchanger.

The generator 6 includes a heat source 5 and a solution tank, and evaporates a solution in the solution tank by heating to generate a refrigerant vapor; the heat source 5 is an electric boiler.

The inner top of the micro-fog humidifying tower 15 is provided with a micro-fog multi-nozzle array 14, a high-temperature dry air outlet of the air channel heater 4 is communicated with a high-temperature dry air inlet of the micro-fog humidifying tower 15, an air outlet at the top of the micro-fog humidifying tower 15 is communicated with the outdoor environment, an outlet at the bottom of the micro-fog humidifying tower 15 is communicated with an inlet of a liquid storage tank 17, and an outlet of the liquid storage tank 17 is communicated with the micro-fog multi-nozzle array 14 through a second circulating pump 16.

The flowing directions of air and liquid in the micro-mist humidifying tower 15 adopt a counter-flow arrangement; the micro-mist humidifying tower 15 is divided into three stages, a high-pressure micro-mist nozzle array is laid on the lowest stage, and air is subjected to primary waste liquid carrying by micro-mist humidification; a high-pressure micro-mist nozzle array and an intermediate packing layer are laid in the intermediate stage, so that the waste liquid is fully carried by the air; the uppermost packing layer is laid at the uppermost stage to prevent liquid waste liquid from being wrapped. The material of the middle packing layer and the material of the uppermost packing layer are both PP hexagonal honeycomb inclined tube materials.

And monitoring local ambient air change in real time, and making a corresponding real-time emission strategy according to the ambient air change. Because the solution dehumidification system is coupled with the absorption refrigeration system, the air channel heater adjusts the temperature, realizes independent temperature and humidity control, can control the air state after carrying the belt, changes the air flow and the temperature and humidity of a discharge point, and is safely discharged into the environment.

The invention utilizes low-temperature waste heat to carry out absorption refrigeration, the cold energy of the evaporator is used for condensing and dehumidifying ambient air, the absorption refrigeration condensation and dehumidification device controls the air humidity, the air humidity is adjusted by adjusting the refrigeration quantity of the refrigeration system, the heating power of the air channel heater is adjusted to adjust the temperature, the independent control of the temperature and the humidity is realized, the continuous operation can be realized under the low-temperature and high-humidity ambient conditions, the utilization range of the ambient air is expanded, the air after being carried is not easy to generate condensed water, and the system stability is improved. The heat sources of the air duct heater and the absorption refrigeration system are both derived from low-quality industrial waste heat or solar energy, so that the energy consumption is reduced.

The working principle of the invention is explained in detail as follows:

in the absorption refrigeration condensation dehumidification device, a lithium bromide dilute solution in a solution tank of a generator 6 is heated by a heat source 5 to form high-temperature water vapor; high-temperature water vapor enters the condenser 7 to be condensed into cooling water, the cooling water enters the evaporator 8 after being throttled by the second throttle valve 13, cooling capacity is transferred to chilled water after evaporation and refrigeration are finished in the evaporator 8, and the water vapor generated by the evaporator 8 enters the absorber 9. The lithium bromide dilute solution in the solution tank of the generator 6 is heated by the heat source 5 to form high-temperature lithium bromide concentrated solution, and the high-temperature lithium bromide concentrated solution and the low-temperature lithium bromide dilute solution from the absorber 9 exchange heat in the intermediate heat exchanger 10, and then enter the absorber 9 through the first throttle valve 11, and are simultaneously diluted by the water vapor from the evaporator 8. The dilute lithium bromide solution in the absorber 9 enters the solution tank of the generator 6 after heat exchange by the first circulating pump 12, thus completing the circulation of the absorption refrigeration system. Ambient air passes through fan 1 and gets into clean room 2, and the ambient air after the dust removal is condensed the dehumidification by low temperature refrigerated water through condensation dehumidifier 3, and the temperature falls to below dew point temperature, forms low moisture content low temperature air, and rethread wind channel heater 4 heats and forms the high-efficient little fog humidification device of hot dry air admission.

In the high-efficient little fog humidification device, the hot dry air that comes out from air duct heater 4 gets into little fog humidification tower 15, the little fog multi-nozzle array 14 of second circulating pump 16 entering of the waste liquid that contains tritium in the liquid storage pot 17, contain the tritium waste liquid and form the micron order liquid droplet through little fog multi-nozzle array 14 and carry out heat and mass exchange with hot dry air, the waste liquid that does not evaporate gets into little fog humidification tower 15 bottom and carries out the humidification recirculation, constantly get into little fog humidification tower 15 along with ambient air and carry out the humidification, the waste liquid volume constantly reduces, hot dry air reaches emission standard, emit into the environment from little fog humidification tower 15 top. Through experimental measurementThe amount and calculation show that the air in different temperature and humidity environments can be dehumidified to 5 g/kg, the air at the outlet of the micro-fog humidifying tower can be humidified to 50-100% of high-humidity air, the humidifying efficiency can reach 85%, and the humidifying efficiency can reach 400 m³The carrying capacity of the waste liquid can reach 7.2kg/h under the condition of wind volume per hour, and is improved by 22.3 percent compared with the prior art.