CN102225295B - Radon-filtering device - Google Patents
Radon-filtering device Download PDFInfo
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- CN102225295B CN102225295B CN 201110096569 CN201110096569A CN102225295B CN 102225295 B CN102225295 B CN 102225295B CN 201110096569 CN201110096569 CN 201110096569 CN 201110096569 A CN201110096569 A CN 201110096569A CN 102225295 B CN102225295 B CN 102225295B
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Abstract
The invention discloses a radon-filtering device which comprises a PLC (programmable logic controller), a high-pressure fan and an absorbing part, wherein the high-pressure fan is connected to the PLC and is turned on/off under the control of the PLC; the absorbing part is connected to the PLC and is turned on/off under the control of the PLC; the absorbing part is communicated with the high-pressure fan and airflow can pass through the absorbing part; the high-pressure fan presses the airflow containing high-concentration radon in ambient air into the absorbing part; the absorbing part pre-cools the entered airflow and absorbs the radon; after the radon adsorbed on the absorbing part is saturated and is desorbed, a transfer unit transfers the high-concentration radon from the absorbing part and stores the high-concentration radon till the high-concentration radon is completely decayed. The radon-filtering device provided by the invention has the advantages of high efficient, small volume, capability of repeatedly operating and high use ratio of resource.
Description
Technical field
The present invention relates to a kind of radon filtering technology, particularly relate to a kind of radon filtering device.
Background technology
Radon is as the inert gas that is present in the surrounding air, it is one of carcinogenic principal element, the human harm of finding Indoor Niton the latter stage sixties first from eighties of last century so far, monitoring and safeguard procedures research to radon just never were interrupted, but, up to the present, the method that does not still have convenient and efficient except ventilation.For can not adopting ventilation to fall the zone of radon, also proposed both at home and abroad based on liquid adsorption method and active carbon adsorption the radon method falls, but that effect and engineering are used is very limited; Equipment job costs height, and after radon is adsorbed, how to carry out subsequent treatment allows equipment low-cost work continuously, and method is all not satisfactory.
Summary of the invention
To the objective of the invention is in order addressing the above problem, to have designed a kind of radon filtering device, its radon to excessive concentration in the local surrounding air carries out filtering, makes that by processing modes such as absorption and desorption giving off airborne radon contents reaches safety index.
Realize that above-mentioned purpose technical scheme of the present invention is that a kind of radon filtering device comprises:
The PLC controller;
High pressure positive blower is connected and is controlled by this PLC controller the opening and closing of this high pressure positive blower with this PLC controller;
The adsorption section is connected with this PLC controller and controls the opening and closing of this adsorption section by this PLC controller, and this adsorption section is communicated with this high pressure positive blower and air-flow is passed through simultaneously; Wherein,
This high pressure positive blower is pressed into the air-flow that contains the high concentration radon in the surrounding air in this adsorption section, by this adsorption section described air-flow is carried out the absorption of pre-cold-peace radon, after be discharged in the surrounding air.
More preferably, this adsorption section comprises absorbed air condenser and the adsorbent charcoal bed that is communicated with it, and described air-flow is cooled by this absorbed air condenser, by described adsorbent charcoal bed the time, the radon in the air-flow is adsorbed.
More preferably, described adsorbent charcoal bed comprises: have the cylindrical metal jar of air inlet and exhaust outlet and the charcoal layer of the granular active carbon formation that is full of metal can inside; After the air-flow that contains the high concentration radon is cooled, enter metal can and by this active carbon layer, the radon in the air-flow is adsorbed by active carbon layer by air inlet in the absorbed air condenser, and filtering the air-flow of radon entered in the surrounding air by exhaust outlet.
More preferably, this absorbed air condenser adopts the heat exchange temperature reduction way to cool off.
More preferably, described radon filtering device also comprises emanometer, and this emanometer is connected with this PLC controller and the content of the airborne radon of testing environment and the content of adsorption section outlet radon under the control of this PLC controller.
More preferably, when the content of radon in the detected surrounding air of this emanometer surpassed safety standard, this high pressure positive blower controlled by this PLC controller and open this adsorption section.
More preferably, described radon filtering device also comprises temperature detecting controller, and this PLC controller detects temperature in this adsorbent charcoal bed by this temperature detecting controller.
More preferably, described radon filtering device also comprises electric heating unit, is connected with this PLC controller and controls the opening and closing of this electric heating unit by this PLC controller, is connected that with this adsorbent charcoal bed it is heated simultaneously, wherein:
When the radon concentration of adsorbing in this adsorbent charcoal bed is saturated, this PLC controller controls this adsorption section and cuts out, this PLC controller is controlled this electric heating unit and this high pressure positive blower to the heating that circulates of this adsorbent charcoal bed simultaneously, makes high concentration radon on this adsorbent charcoal bed be desorbed attached come out under hot conditions.
More preferably, described radon filtering device also comprises the unloading unit, is connected and is controlled by this PLC controller the opening and closing of this unloading unit with the PLC controller; The radon that this unloading unit is used for storage and decays and be desorbed out from described adsorption section.
More preferably, described unloading unit comprises: the shutoff valve of Lian Jieing, vavuum pump, forecooler and vent valves is installed and/or the absorption of switch storage charcoal bed successively; When the unloading unit is opened, under the control of this shutoff valve, vavuum pump, make in the aforementioned adsorbent charcoal bed and remain negative pressure state, the high concentration radon sucking-off that this vavuum pump comes out desorption, be pressed into this forecooler, the radon of high concentration cools off with the heat exchange temperature reduction way in this forecooler, the radon of cooled high concentration by absorbing storage charcoal bed, is absorbed the complete adsorption filtration of active carbon in the storage charcoal bed again, and the pure air of filtering radon enters the surrounding air from vent valves and/or switch;
Preferably, in the described radon filtering device running, the condensed water that produces in each parts enters the tank that is communicated with it by draining control valve door and/or switch;
Preferably, in described radon filtering device, described adsorption section is 40m to the adsorption rate that contains high concentration radon gas stream
3/ h-60m
3/ h; Be preferably 50m
3/ h;
Preferably, in described radon filtering device, described air-flow temperature by described absorbed air forecooler the time will descend 5 ℃-8 ℃;
Preferably, in described radon filtering device, the ratio of the cylindrical metal jar diameter of described adsorbent charcoal bed and height is 1: 2-1: between 5, be preferably 1: 3;
Preferably, in described radon filtering device, the temperature of described adsorbent charcoal bed is heated to 150 ℃-170 ℃ by described electric heating unit circulation, is preferably 160 ℃;
Preferably, in described radon filtering device, the air pressure in the described adsorbent charcoal bed remains on-0.5 to-0.3 atmospheric pressure;
Preferably, in described radon filtering device, in the described unloading unit absorption radon process, high heat, high concentration radon gas stream that desorption is come out are chilled to 8 ℃-12 ℃ in advance in forecooler;
Preferably, in described radon filtering device, described absorption storage charcoal bed is 20L/min-30L/min to the adsorption rate of high concentration radon, is preferably 25L/min;
Preferably, in described radon filtering device, described absorption storage charcoal bed is the charcoal layer that has the cylindrical metal jar of air inlet and exhaust outlet and be full of the granular active carbon formation of metal can inside; The ratio of the diameter of described cylindrical metal jar and height is 1: 3-1: between 6, be preferably 1: 4.
Radon filtering device of the present invention compared with prior art has the following advantages: one, owing to adopt the PLC automatic controller, so automaticity is very high, is beneficial to exceed standard occasion, personnel of various radons and is difficult for the long-time local operation automatically that stops; Two, radon filtering device of the present invention uses emanometer to measure automatically, and radon concentration in the air is accurately detected, so the device start-stop time is accurate, has effectively reduced energy consumption; Three, because be automatic circulation, absorption repeatedly, desorption, adsorb work again, so to the adsorption efficiency height of radon, fall the radon better effects if; Four, the adsorbent charcoal bed carries out heating desorption in the absorption saturated back short time, and desorption efficiency can reach more than 98%, very thoroughly, efficiently; Five, use absorbing and storing charcoal bed of the present invention, solved the absorption unloading storage difficult problem of high concentration radon; Can the high concentration radon after the absorption be carried out more efficiently subsequent treatment, avoid secondary pollution; Six, device volume is little, and is in light weight, and mobile flexibly, conveniently cost is low, and energy consumption is little, use, easy to maintenance; The radon filtering device that adopts the present invention to make, floor space is 0.44m2 only, shortage in weight 150Kg, the bottom is installed 4 and turned round wheel, and is mobile very convenient.
Description of drawings
Fig. 1 is the structural representation of radon filtering device of the present invention;
Fig. 2 is the structural representation of unloading of the present invention unit;
Fig. 3 is the structural representation of one embodiment of the invention.
The specific embodiment
For ease of understanding technical solution of the present invention, below in conjunction with accompanying drawing concrete embodiment is introduced.As shown in Figure 1, two-wire is represented gas circuit among the figure, and single line is represented electrical interconnection or part water route; The PLC controller is electrically connected with emanometer, high pressure positive blower, electric heating unit, adsorption section, temperature detecting controller, unloading unit and draining control valve door and/or switch respectively, and it is carried out system's control; And adopt conventional pipe technology sealing to connect between high pressure positive blower, electric heating unit, adsorption section and the unloading unit, and each device all is provided with respective valves and/or switch, as magnetic valve, numerical control switch etc., decides according to the task needs; Carry out system synchronization control by the PLC controller equally; Above-mentioned PLC controller refers to the programmable logic controller (PLC) of digital operation operation electronic system.
In the time of in working order, at first, the PLC controller comes the concentration of radon in the testing environment air by emanometer; Surpass state-set standard if measure the content of radon in the surrounding air, the PLC controller can send instruction beginning radon filtering process automatically: the absorbed air forecooler in OnNow high pressure positive blower, the adsorption section and be attached thereto logical adsorbent charcoal bed and respective valves and/or switch, and other device and respective valves and/or switch are then closed; Described high pressure positive blower then will contain the air of high concentration radon in the surrounding air, by flow velocity control, with 40m
3/ h-60m
3The speed of/h is blown in this adsorption section, wherein with 50m
3The speed of/h is best; By the absorbed air forecooler in this adsorption section the time, because adopting by the mode of the outer cooling medium heat-shift of heat exchange tube and tube, cools off by the absorbed air forecooler, control it and descend 5 ℃-8 ℃ than external environment, after enter the adsorbent charcoal bed that is communicated with it; Among the present invention, described adsorbent charcoal bed is a charcoal layer that has the cylindrical metal jar of air inlet and exhaust outlet and be full of the granular active carbon formation of metal can inside; For adsorbing better, by evidence: the diameter of cylindrical adsorbent charcoal bed and height ratio are 1: 2-1: between 5 for well, adsorption effect the best of 1: 3 wherein; Active carbon of dress in it can use the 4-8 order cocoanut active charcoal of producing as the Nanjing gloomy active carbon of wood woods factory, is preferably that the 4-8 purpose is a kind of to reach the Filipine cocoanut active charcoal of originating from of 5L/g to the radon adsorption efficiency; After the air-flow that contains the high concentration radon cools off in the absorbed air forecooler, enter the cylindrical metal jar and pass through active carbon layer by air inlet, radon in the air-flow is by charcoal absorption, and filtering the air-flow of radon discharged by the exhaust outlet of the respective valves above the adsorbent charcoal bed and/or switch control; Before the adsorbent charcoal bed reached capacity, whole adsorption process can circulate and carry out, and the concentration of radon reaches safety standard in surrounding air.
In the process of whole radon filtering, in apparatus of the present invention, the adsorbent charcoal bed is as loading 20 kilograms of 4-8 order Philippine cocoanut active charcoals, about about 2 hours of the absorption course of work; Measure in the air-flow of discharge as contain radon and raise gradually until identical with ambient concentration at exhaust ports emanometer test point, this just prove the adsorbent charcoal bed the state of reaching capacity lose absorption radon ability, the PLC controller will send instruction, carry out desorption and unloading process automatically and carry out the unloading storage and recover the adsorbent charcoal bed to the adsorption capacity of radon.
At this moment, the PLC controller sends instruction and stops, cutting out all electrical equipment and valve and/or switch, opens electric heating unit and described high pressure positive blower and respective valves and/or switch then and comes the heating that circulates of adsorbent charcoal bed; At this moment, form a sealing hot air circulate heating system by high pressure positive blower, electric heating unit, adsorbent charcoal bed, allow the temperature of adsorbent charcoal bed raise gradually, temperature detecting controller detects the temperature of adsorbent charcoal bed and data is passed to the PLC controller.When the temperature of adsorbent charcoal bed reaches about 150 ℃-170 ℃, preferred 160 ℃ is best, and the radon on the adsorbent charcoal bed can be desorbed attached come out; At this moment, radon is free state, high heat, high concentration; In apparatus of the present invention, this heating process probably needs could all desorb the radon on whole adsorbent charcoal beds in about 2 hours.
Next step, the temperature that measures the adsorbent charcoal bed at temperature detecting controller reaches about 150 ℃-170 ℃, the PLC controller can send instruction again, stop all electrical equipment work, close respective valves and/or switch; And start the unloading unit and and the adsorbent charcoal bed between valve and/or switch.
As shown in Figure 2, two-wire is represented gas circuit among the figure; Described unloading unit is by the shutoff valve, vavuum pump, the forecooler that are communicated with successively and vent valves is installed and/or the absorption of switch storage charcoal bed forms, connects by corresponding sealing pipeline each other and has respective valves and/or switch to control; When the unloading unit is opened, under the control of this shutoff valve, vavuum pump, remain-0.5 to-0.3 atmospheric pressure approximately in the described adsorbent charcoal bed, be negative pressure state; Like this, high heat, the sucking-off of high concentration radon that this vavuum pump comes out desorption, be pressed into this forecooler, it cools off by the mode of heat exchange tube and tube cooling medium heat-shift outward in this forecooler, is cooled to 8 ℃-12 ℃, and is the best with 10 ℃; The radon of cooled high concentration with 20L/min-30L/min, is preferably the flow velocity of 25L/min by absorbing storage charcoal bed under the control of vavuum pump, shutoff valve; Among the present invention, described absorption storage charcoal bed also is designed to a charcoal layer that has the columniform metal can of air inlet and exhaust outlet and be full of the granular active carbon formation of metal can inside; For adsorbing better, by evidence: absorb the diameter of storage charcoal bed and ratio highly 1: 3-1: between 6,1: 3 absorbing and storing best results wherein; The active carbon of dress in it can use the 8-12 order cocoanut active charcoal of producing as the Nanjing gloomy active carbon of wood woods factory; Be preferably that the 8-12 purpose is a kind of to reach the Filipine cocoanut active charcoal of originating from of 5L/g to the radon adsorption efficiency; High concentration radon after the cooling enters metal can by above-mentioned setting flow velocity by air inlet and by active carbon layer, and the radon in the air-flow is by charcoal absorption, and filtering the air-flow of radon by absorbing above the storage charcoal bed vent valves and/or switch pair to the environment of outside; This process, apparatus of the present invention probably needed about 1.5 hours; Because the half-life of radon has only 3.82 days, will all decay voluntarily after 23 days (6 half-life), so, fill out 15 kilograms of 8-12 order Philippine cocoanut active charcoals in the absorption storage charcoal bed that adopts the inventive method to prepare, usefulness is fallen in enough radon storages, decay, thereby has solved the difficult problem of storing up of high concentration radon.
After finishing desorption and storing process, the adsorbent charcoal bed also is in the high temperature about 160 degree, must make it be down to the process that room temperature could begin next round adsorption filtration radon fast; This moment, the PLC controller can send instruction, close unloading unit and respective valves and/or switch, open high pressure positive blower, absorbed air forecooler, adsorbent charcoal bed and respective valves and/or switch again, the mode of directly blowing with cold air is to high temperature adsorbent charcoal bed fast cooling; This process, apparatus of the present invention probably needed about 1 hour; By temperature detecting controller, the temperature of adsorbent charcoal bed drops to and just can begin new one after the room temperature and take turns radon filtering process.
The condensed water that produces in the process of device operation is regularly opened the draining control valve door all by corresponding pipeline, enters special tank.
As Fig. 3 and shown in Figure 2, be another embodiment of the present invention, comprise PLC controller, emanometer, high pressure positive blower, electric heating unit, absorbed air forecooler, adsorbent charcoal bed, temperature detecting controller, unloading unit and from No. 1 to No. 5 five by-pass valve controls and/or switch, be electrically connected with the PLC controller respectively, and carry out system's control by it; And No. 1 by-pass valve control and/or switch, high pressure positive blower, electric heating unit, absorbed air forecooler, No. 4 by-pass valve controls and/or switch, adsorbent charcoal bed, No. 2 by-pass valve controls and/or switch, unloading unit are connected according to conventional closed conduit technology with No. 3 by-pass valve controls and/or switch.Connect temperature detecting controller and No. 5 by-pass valve controls are installed and/or switch at the adsorbent charcoal bed.
During device work, emanometer can detect the concentration of radon in the surrounding air and data are passed to the PLC controller, if airborne radon concentration surpasses required standard, then the PLC controller sends and instructs the beginning starting drive to adsorb radon filtering process.At first under the control of PLC controller, open No. 1 by-pass valve control and/or switch, high pressure positive blower, absorbed air forecooler, No. 4 by-pass valve controls and/or switch and No. 5 by-pass valve controls and/or switch, high concentration contains the radon air and enters the absorbed air condenser carry out precooling under the effect of high pressure positive blower, pass through the adsorbent charcoal bed then with the radon filtering, a large amount of radons by filtering after, high concentration contains the radon air and becomes low concentration and contain the radon air and entered in the air by No. 5 by-pass valve controls and/or switch.When reach set the working time or record No. 5 by-pass valve controls by emanometer and/or air-flow that the switch place discharges in the concentration of radon raise gradually until consistent with airborne concentration, can learn that the adsorbent charcoal bed reaches capacity, lose the ability that continues the absorption radon; Back PLC controller can send instruction, and beginning desorb storing process recovers the ability of adsorbent charcoal bed absorption radon: namely close absorbed air forecooler, No. 1 and No. 5 by-pass valve controls and/or switch earlier, open electric heating unit; At this moment, high pressure positive blower, electric heating unit, adsorbent charcoal bed have constituted a sealing circulation heating circuit to the heating that circulates of adsorbent charcoal bed, generally are heated to about 150 ℃-170 ℃, and effect is the best in the time of 160 ℃.When the temperature of adsorbent charcoal bed reaches specified value, probably be about 2 hours the heat time heating time of present embodiment, the radon that is adsorbed all desorbs, the free state that is high temperature, high concentration, temperature detecting controller can be passed to temperature data the PLC controller, the PLC controller can closeall electrical equipment and by-pass valve control and/or switch then, only opens No. 2 by-pass valve controls and/or switch, unloading unit and No. 3 by-pass valve controls and/or switch; The high concentration radon that is desorbed out on the adsorbent charcoal bed is by the control of the shutoff valve in the unloading unit, vavuum pump, sucking-off, be pressed in the forecooler in the unloading unit lower the temperature, precooling, to 8 ℃-12 ℃, be preferably 10 ℃; Again with this high concentration radon with 20L/min-30L/min, be preferably 25L/min by absorbing storage charcoal bed, with its absorption, storage; And will by the pure air after the absorption by No. 3 valves and/or switch pair to surrounding air; This process present embodiment probably needs about 1.5 hours.After the desorb storing process is finished, the adsorbent charcoal bed still is in the condition of high temperature, for fast cooling PLC controller will cut out No. 2 by-pass valve controls and/or switch, unloading unit and No. 3 by-pass valve controls and/or switch, open No. 1 by-pass valve control and/or switch, high pressure positive blower, absorbed air forecooler, No. 4 by-pass valve controls and/or switch and No. 5 by-pass valve controls and/or switch, directly blow by air-cooled mode, for adsorbent charcoal bed fast cooling until room temperature, and then repeat above-mentioned steps and restart radon filtering process.Behind the device end of run, but PLC controller timing controlled draining control valve door and/or switch open enter tank with the condensed water that produces.
Above-described embodiment is to adopt the PLC controller to implement control; Also can not adopt the control of PLC controller, implement manually or semiautomatic control, program is the same, has just increased labour intensity.
In all embodiment of the invention, owing to have plenty of connected modes (deciding on task) such as gas circuit, water route, circuit between the various devices, or form various closed circulation pipelines, or because how the cooling and dehumidifying treatment technology as radon, the PCL controller that has connects, operational order etc.; All this kind all belongs to prior art, belongs to known content, and those skilled in that art all know, clear, therefore, describes in detail no longer one by one in the literary composition.
Package unit volume of the present invention is 1m
3-1.5m
3, weight is 130Kg-150Kg, has realized falling the miniaturization of radon device.
Technique scheme has only embodied the optimal technical scheme of technical solution of the present invention, those skilled in the art to some part wherein some changes that may make all embodied principle of the present invention, belong within protection scope of the present invention.
Claims (17)
1. a radon filtering device is characterized in that, comprising:
The PLC controller;
High pressure positive blower is connected and is controlled by this PLC controller the opening and closing of this high pressure positive blower with this PLC controller;
Adsorption section, this adsorption section comprise absorbed air condenser and the adsorbent charcoal bed that is communicated with it, are connected with this PLC controller and control the opening and closing of this adsorption section by this PLC controller, and this adsorption section is communicated with this high pressure positive blower and air-flow is passed through simultaneously; Adsorption rate is 40 m
3/ h-60 m
3/ h;
Electric heating unit is connected with this PLC controller and controls the opening and closing of this electric heating unit by this PLC controller, is connected that with aforementioned adsorbent charcoal bed it is heated simultaneously, wherein:
When the radon concentration of adsorbing in this adsorbent charcoal bed is saturated, this PLC controller controls this adsorption section and cuts out, this PLC controller is controlled this electric heating unit and this high pressure positive blower to the heating that circulates of this adsorbent charcoal bed simultaneously, to 150 ℃-170 ℃, the air pressure in the adsorbent charcoal bed remains on-0.5 to-0.3 atmospheric pressure; Make high concentration radon on this adsorbent charcoal bed under hot conditions, be desorbed attached come out.
The unloading unit, this unloading unit comprises: the shutoff valve of Lian Jieing, vavuum pump, forecooler and vent valves is installed and/or the absorption of switch storage charcoal bed successively; And be connected with the PLC controller, controlled the opening and closing of this unloading unit by this PLC controller; The radon that this unloading unit is used for storage and decays and be desorbed out from described adsorption section; Described absorption storage charcoal bed is 20L/min-30L/min to the adsorption rate of high concentration radon.
2. radon filtering device according to claim 1 is characterized in that, described adsorbent charcoal bed comprises: have the cylindrical metal jar of air inlet and exhaust outlet and the charcoal layer of the granular active carbon formation that is full of metal can inside; After the air-flow that contains the high concentration radon is cooled, enter metal can and by this active carbon layer, the radon in the air-flow is adsorbed by active carbon layer by air inlet in the absorbed air condenser, and filtering the air-flow of radon entered in the surrounding air by exhaust outlet.
3. radon filtering device according to claim 1 is characterized in that, this absorbed air condenser adopts the heat exchange temperature reduction way to cool off.
4. radon filtering device according to claim 1, it is characterized in that, described radon filtering device also comprises emanometer, and this emanometer is connected with this PLC controller and the content of the airborne radon of testing environment and the content of adsorption section outlet radon under the control of this PLC controller.
5. radon filtering device according to claim 4 is characterized in that, when the content of radon in the detected surrounding air of this emanometer surpassed safety standard, this high pressure positive blower controlled by this PLC controller and open this adsorption section.
6. radon filtering device according to claim 1 is characterized in that, described radon filtering device also comprises temperature detecting controller, and this PLC controller detects temperature in this adsorbent charcoal bed by this temperature detecting controller.
7. radon filtering device according to claim 1, it is characterized in that, when the unloading unit is opened, under the control of this shutoff valve, vavuum pump, make in the aforementioned adsorbent charcoal bed and remain negative pressure state, the high concentration radon sucking-off that this vavuum pump comes out desorption, be pressed into this forecooler, the radon of high concentration cools off with the heat exchange temperature reduction way in this forecooler, the radon of cooled high concentration is again by absorbing storage charcoal bed, be absorbed the complete adsorption filtration of active carbon in the storage charcoal bed, the pure air of filtering radon enters the surrounding air from vent valves and/or switch.
8. the described any radon filtering device of claim 1-7, described radon filtering device is in running, and the condensed water that produces in each parts enters the tank that is communicated with it by draining control valve door and/or switch.
9. radon filtering device according to claim 1, described air-flow temperature by described absorbed air forecooler the time will descend 5 ℃-8 ℃.
10. radon filtering device according to claim 2, the ratio of the cylindrical metal jar diameter of described adsorbent charcoal bed and height is between 1:2-1:5.
11. radon filtering device according to claim 10, the cylindrical metal jar diameter of described adsorbent charcoal bed is 1:3 with the ratio of height.
12. radon filtering device according to claim 1, in the described unloading unit absorption radon process, high heat, high concentration radon gas stream that desorption is come out are chilled to 8 ℃-12 ℃ in advance in forecooler.
13. radon filtering device according to claim 1, described absorption storage charcoal bed is the charcoal layer that has the cylindrical metal jar of air inlet and exhaust outlet and be full of the granular active carbon formation of metal can inside; The diameter of described cylindrical metal jar and the height ratio between 1:3-1:6,
14. radon filtering device according to claim 13, the diameter of described absorption storage charcoal bed cylindrical metal jar is 1:4 with the ratio of height.
15. radon filtering device according to claim 1, described adsorbent charcoal bed is 50 m to the adsorption rate that contains high concentration radon gas stream
3/ h.
16. radon filtering device according to claim 1, the temperature of described adsorbent charcoal bed is heated to 160 ℃ by described electric heating unit circulation.
17. radon filtering device according to claim 1, described absorption storage charcoal bed is 25L/min to the adsorption rate of high concentration radon.
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| CN108722381A (en) * | 2018-08-15 | 2018-11-02 | 南华大学 | Radon-absorption active carbon regenerating unit and regeneration method based on microwave heating desorption |
| CN110404377A (en) * | 2019-07-23 | 2019-11-05 | 南华大学 | Underground engineering radon gas absorbing treatment device |
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| CN102225295A (en) | 2011-10-26 |
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