CN205582519U - Carbon containing - 14 waste gas treatment system - Google Patents
Carbon containing - 14 waste gas treatment system Download PDFInfo
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- CN205582519U CN205582519U CN201620345706.6U CN201620345706U CN205582519U CN 205582519 U CN205582519 U CN 205582519U CN 201620345706 U CN201620345706 U CN 201620345706U CN 205582519 U CN205582519 U CN 205582519U
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Abstract
The utility model discloses a carbon containing 14 waste gas treatment system, in getting rid of waste gas H2 the hydrogen unit that disappears, with the carbon containing in the waste gas 14 the organic matter changes CO2's catalytic oxidation unit into and absorbs the absorptive unit of processing to CO2, hydrogen unit, catalytic oxidation unit and the absorptive unit of disappearing connects gradually according to waste gas direction of delivery. The utility model discloses a carbon containing 14 waste gas treatment system for handle the carbon containing 14 CO2 and organic matter gaseous (especially low concentration), with the carbon containing 14 CO2 and organic matter gas reforming absorb, conversion efficiency can reach 90% more than and, can be the carbon that contains the ppmv level in the script waste gas 14 the material reduces an order of magnitude or gets rid of, avoids reflectivity exhaust emission to nuclear power plant and the peripheral environment in and to have influenced the environment healthy and stable.
Description
Technical field
This utility model relates to nuclear power plant's radioactive emission processing technology field, particularly relates to a kind of exhaust treatment system Han carbon-14.
Background technology
Carbon-14 (14C) having weak beta activity, Beta-ray energy is 49keV, has internal radiation risk, and its half-life is 5730, and core examines the carbon-14 produced in running, and the impact on environment can not be ignored.
As a example by nuclear power plant, produce in nuclear power plant is mainly discharged by the hydrogeneous subsystem of TEG containing carbon-14 waste gas.In the waste gas component of the hydrogeneous subsystem of TEG, N2Content is about 80%, H2Content is about 20%, and wherein the gas concentration Han carbon-14 is between 2.9-7.4ppmv, accounts for 75%～95% containing Hydrocarbon Organic in carbon-14 gas, CO2Content be 5%～25%.The gas content containing carbon-14 is minimum, for ppm rank, is difficult to effectively remove, and then is difficult to avoid that in the environment that reflexive waste gas is emitted into nuclear power plant and periphery thereof, have impact on Environmental Health stable.
Utility model content
The technical problems to be solved in the utility model is, it is provided that a kind of effective removal containing carbon-14 gas containing carbon-14 exhaust treatment system.
This utility model solves its technical problem and be the technical scheme is that a kind of exhaust treatment system Han carbon-14 of offer, including removing H in removing exhaust gas2The hydrogen unit that disappears, the Organic substance containing carbon-14 in waste gas is changed into CO2Catalytic oxidation unit and to CO2Carry out the absorptive unit of absorption process；Described hydrogen unit, catalytic oxidation unit and the absorptive unit of disappearing is sequentially connected with by waste gas conveying direction.
Preferably, described in the hydrogen unit that disappears include hydrogen oxygen recombination device, this hydrogen oxygen recombination device includes accommodating waste gas, for the H in waste gas2H is generated with oxygen reaction under noble metal catalyst is catalyzed2The airtight container of O.
Described catalytic oxidation unit includes the heater heated from the described waste gas disappearing hydrogen unit, and receives from the waste gas after the heating of described heater, for changing into CO with oxygen reaction containing carbon-14 Organic substance under noble metal catalyst is catalyzed in waste gas2Catalytic reactor；Described heater disappears between hydrogen unit and described catalytic reactor described in being connected to.
Preferably, described in the hydrogen unit that disappears also include that the described waste gas after offseting hydrogen carries out the first cooler cooled down, described first cooler is connected between described hydrogen oxygen recombination device and heater；
Described catalytic oxidation unit also includes the second cooler cooling down the described waste gas after catalysis oxidation, and described second cooler is connected between described catalytic reactor and absorptive unit.
Preferably, described absorptive unit includes Dry absorption unit and/or wet absorption unit；
Described Dry absorption unit is in parallel with wet absorption unit and/or connects.
Preferably, described Dry absorption unit includes the absorber processed waste gas successively and adsorber and desorption gas is introduced described adsorber so that adsorber to carry out the desorption pipeline of desorption and regeneration；The port of export of described absorber is connected with the absorption air inlet of described adsorber, and described desorption pipeline is connected with the desorption air inlet of described adsorber.
Preferably, described desorption pipeline is provided with and described desorption gas is heated to the heater of desorption temperature and detects the temperature sensor of described desorption gas temperature, and described temperature sensor is positioned at the outlet side of described heater.
Preferably, described Dry absorption unit also includes the absorption pipeline that the desorption gas that described adsorber desorption produces is delivered to described absorber, the discharge pipe line discharged by the desorption gas after described absorber；
Described absorption pipeline one end connects the desorption gas outlet of described adsorber, and the other end connects the entrance point of described absorber；Described discharge pipe line connects the port of export of described absorber.
Preferably, described wet absorption unit includes absorption tower；Described absorption tower include airtight tower body, be arranged on described tower body inner bottom part for housing the absorbed layer of absorbing liquid, being arranged at least one of which packing layer above described absorbed layer and be arranged on above described packing layer the spraying mechanism to described packing layer spray-absorption liquid；
It is communicated with the gas access to described absorbed layer on described tower body, in described absorbed layer, is provided with the bubbling trachea connecting described gas access, being delivered in described absorbing liquid in bubbling mode by gas；Described tower body is provided with and exports for the gas expellant gas after sequentially passing through described absorbed layer and packing layer, and described gas outlet is positioned at the top of described tower body.
Preferably, described tower body is communicated with the absorbing liquid entrance to described absorbed layer and absorbing liquid outlet；And/or, described tower body is provided with at least one observation window；And/or, described tower body is provided with for carrying the water water inlet with regulation absorbing liquid concentration, and described water inlet is communicated to described absorbed layer, and is positioned at the ullage of absorbing liquid.
Preferably, in described absorption tower also includes being arranged on described tower body and be positioned at the demister above described spraying mechanism；And/or, described absorption tower also includes connecting described spraying mechanism and absorbed layer, by the absorption liquid pump in described absorbed layer to described spraying mechanism to carry out the circulating pump sprayed；
Described wet absorption unit also includes the sedimentation tank being connected with the absorbed layer on described absorption tower.
Of the present utility model containing carbon-14 exhaust treatment system, for processing the CO containing carbon-142And organic gas (particularly low concentration), by the CO containing carbon-142And organic gas converts and absorbs, transformation efficiency can reach 90% and more than, the carbon-14 material of ppmv level contained in script waste gas can be reduced an order of magnitude or removal, it is to avoid reflexive waste gas is emitted in the environment of nuclear power plant and periphery thereof and have impact on Environmental Health stably.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart containing carbon-14 exhaust treatment system of the present utility model；
Fig. 2 is the example structure schematic diagram of hydrogen unit of disappearing in Fig. 1；
Fig. 3 is an example structure schematic diagram of catalytic oxidation unit in Fig. 1
Fig. 4 is an example structure schematic diagram of absorptive unit in Fig. 1；
Fig. 5 is an example structure schematic diagram of Dry absorption unit in Fig. 4；
Fig. 6 is an example structure schematic diagram of wet absorption unit in Fig. 4.
Detailed description of the invention
In order to be more clearly understood from technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing describes detailed description of the invention of the present utility model in detail.
As it is shown in figure 1, of the present utility model containing carbon-14 exhaust treatment system, for the exhaust-gas treatment of nuclear facilities, remove therein have radioactive carbon-14 (14C).This processing system includes the hydrogen unit 10 that disappears, catalytic oxidation unit 20 and the absorptive unit 30 being sequentially connected with by waste gas conveying direction.
Wherein, hydrogen unit 10 is disappeared for removing the H in removing exhaust gas2, it is by H2H is generated with oxygen reaction2O；Catalytic oxidation unit 20 by the Organic substance containing carbon-14 in waste gas (such as CH4) change into CO2, it is beneficial to follow-up absorption；Absorptive unit is to the CO in waste gas2Carry out absorption process；Remove CO2After waste gas carry out emission treatment again.
As shown in Figure 1, 2, the hydrogen unit 10 that disappears includes hydrogen oxygen recombination device 11, for hydrogen and the compound reaction of oxygen.This hydrogen oxygen recombination device 11 includes the airtight container accommodating waste gas.H in container, in waste gas2H is generated with oxygen reaction under noble metal catalyst is catalyzed2O。
The hydrogen unit 10 that disappears also includes that Hun Yang mechanism 12, Hun Yang mechanism 12 can include the oxygen supply pipeline being connected with oxygen sources, and it is connected between container and oxygen supply source, to be delivered in container by oxygen.Or, Hun Yang mechanism 12 includes the air chamber that oxygen is carried out mix with waste gas, and air chamber is connected with hydrogen oxygen recombination device 11, and waste gas is delivered to hydrogen oxygen recombination device 11 again with after oxygen mix wherein.Noble metal catalyst includes palladium, platinum etc., is arranged in container.H in waste gas2H is generated with oxygen reaction under the catalysis of noble metal catalyst2O, this reaction is exothermic reaction, the H therefore generated2O is Properties of Steam.
The hydrogen unit 10 that disappears may also include the first cooler 13 that the waste gas after offseting hydrogen carries out cooling down further, and the water vapour generated in waste gas is cooled into condensed water, to separate with waste gas.First cooler 13 is connected between hydrogen oxygen recombination device 11 and catalytic oxidation unit 20, the waste gas (including waste gas and unreacted oxygen) of hydrogen oxygen recombination device 11 output enters back into catalytic reaction unit 20 after first passing through this first cooler 13, and steam is separated after condensing in this first cooler 13 from waste gas.
As shown in Figure 1,3, catalytic oxidation unit 20 includes the heater 22 that heats the waste gas (may additionally include unreacted oxygen in the hydrogen unit 10 that disappears) from the hydrogen unit 10 that disappears and airtight catalytic reactor 21, heater 22 is connected to disappear between hydrogen unit 10 and catalytic reactor 21, receives from the waste gas of the hydrogen unit 10 that disappears and heats waste gas；Waste gas after heating forms high-temperature gas and exports to catalytic reactor 21.In catalytic reactor 21, waste gas changes into CO with oxygen reaction containing carbon-14 Organic substance under the catalysis of high temperature and noble metal catalyst2.Noble metal catalyst includes palladium, platinum etc., is arranged in catalytic reactor 21.
Specifically, heater 22 is connected between the first cooler 13 and catalytic reactor 21, preferably electric heater, waste gas etc. is heated to about 350 DEG C by electrically heated mode, the highest can be heated to 500 DEG C.At about 350 DEG C, can completely and oxygen reaction changes into CO containing carbon-14 Organic substance in waste gas2。
Further, catalytic oxidation unit 20 also includes the second cooler 23 cooling down the waste gas after catalysis oxidation, and the second cooler 23 is connected between catalytic reactor 21 and absorptive unit 30.Waste gas after catalysis oxidation enters back into absorptive unit 30 after the second cooler 23 is cooled to room temperature and carries out absorption process.
Additionally, heater 22 connects oxygen sources also by oxygen supply pipeline, to guarantee to have sufficient oxygen to react with the Organic substance containing carbon-14.
As shown in Figure 4, in an embodiment of absorptive unit 30, Dry absorption unit 31 and/or wet absorption unit 32 can be included.Dry absorption unit 31 and wet absorption unit 32 can be all connected with catalytic reaction unit 20, and the waste gas from catalytic oxidation unit 20 can carry out absorption process separately through Dry absorption unit 31 or wet absorption unit 32.
Additionally, also can connect between Dry absorption unit 31 and wet absorption unit 32, thus parallel connection and/or series connection can be formed.The valve opening and closing connected on pipeline that the selection of Dry absorption unit 31 and the parallel connection of wet absorption unit 32 and/or series model can be connected by realization is controlled selecting.
When exhausted air quantity is less, Dry absorption unit 31 or wet absorption unit 32 can be used individually waste gas to be carried out absorption process；When exhausted air quantity is relatively big or have an accident operating mode time, dry-and wet-type series model or dry-and wet-type paralleling model can be used to carry out absorption process.
When using dry-and wet-type series model absorption to process, waste gas passes sequentially through Dry absorption unit 31 and wet absorption unit 32, and waste gas first passes through after Dry absorption unit 31 carries out first order absorption process, enters back into wet absorption unit 32 and carries out two grades of absorptions and process.Or, waste gas passes sequentially through wet absorption unit 32 and Dry absorption unit 31, and waste gas first passes through after wet absorption unit 32 carries out first order absorption process, enters back into Dry absorption unit 31 and carries out two grades of absorptions and process.
When using dry-and wet-type paralleling model absorption to process, waste gas carries out absorption process by Dry absorption unit 31 and wet absorption unit 32 respectively.
As shown in Figure 4,5, as in an embodiment of Dry absorption unit 31, it can include absorbent bed 311 and the adsorber 312 processed waste gas successively, also includes desorption gas is introduced adsorber 312 so that adsorber 312 to carry out the desorption pipeline 313 of desorption and regeneration.
Wherein, absorbent bed 311 has the entrance point for waste gas turnover and the port of export；Adsorber 312 has absorption air inlet and absorbs QI KOU, and for the desorption air inlet of desorption gas turnover be desorbed gas outlet.Absorbent bed 311 entrance point connects catalytic reaction unit 20, receives waste gas；The port of export of absorbent bed 311 is connected with the absorption air inlet of adsorber 312, and the waste gas processed through absorbent bed 311 absorption can enter adsorber 312 by the port of export and absorption air inlet further, to carry out adsorption treatment, farthest reduces exhaust gas constituents such as CO2Escape.
The entrance point of absorbent bed 311 is provided with the first valve 3110, controls the keying of entrance point.The port of export of absorbent bed 311 arranges valve also dependent on needs and opens and closes to control it.Preferably, absorbent bed 311 is provided with two and in parallel, one as main absorbent bed, another is as standby absorbent bed.Absorbent on absorbent bed 311 is solid absorbent, as used one or more compound alkaline metal oxides as absorbent, it is possible to CO2Reaction generates stable carbonate.
The absorption air inlet of adsorber 312 connects the port of export of absorbent bed 311, receives the waste gas through absorption from absorbent bed 311, and the QI KOU that absorbs of adsorber 312 is connectable to floss hole, is discharged by the waste gas after adsorption treatment.Adsorber 312 is to use molecular sieve as the adsorber of adsorbing material.It is provided with the second valve 3120 at the absorption air inlet of adsorber 312, controls the keying of absorption air inlet.Absorbing QI KOU and can also being arranged as required to valve of adsorber 312, controls this keying absorbing QI KOU.
Desorption pipeline 313 is connected with the desorption air inlet of adsorber 312, is delivered in adsorber 312 by desorption gas, adsorber 312 is carried out desorption and regeneration.
Desorption pipeline 313 is provided with heater 3131, and desorption gas is heated to desorption temperature, improves the desorption gas desorption effect to adsorber.Wherein, heater 3131 enters wherein from heater 3131 inlet end with inlet end towards desorption gas source, desorption gas, exports and enter adsorber 312 from the outlet side of heater after heated intensification.Preferably, heater 3131 uses electric heater.
The inlet end of heater 3131 is additionally provided with control valve 3133, controls the break-make that desorption carries with gas.After adsorber 312 reaches to adsorb saturation, control valve 3133 and open, introduce desorption gas by desorption pipeline 313, adsorber 312 is desorbed.
Being additionally provided with the temperature sensor 3132 of detection desorption gas temperature on desorption pipeline 313, temperature sensor 3132 is positioned at the outlet side of heater 3131.
Further, this Dry absorption unit 31 also includes absorbing pipeline 314 and discharge pipe line 315.Absorbing pipeline 314 one end and connect the desorption gas outlet of adsorber 312, the other end connects the entrance point of absorbent bed 311, and the desorption gas that adsorber 312 is desorbed generation is delivered to absorbent bed 311；Discharge pipe line 315 connects the port of export of absorbent bed 311, is discharged by the desorption gas after absorber 311.CO in waste gas2Adsorb through absorbing and being adsorbed device 312 after absorption, be desorbed from adsorber 312 after desorption, and be delivered to absorbent bed 311 by absorption pipeline 314 further, can be discharged by discharge pipe line 315 after carrying out re-absorption process.
Discharge pipe line 315 entrance point connects absorbent bed 311, and the port of export is then connected to floss hole；Close on and also be provided with on the discharge pipe line 315 of entrance point controlling valve 3150, control the break-make of discharge pipe line 315.
Such as Fig. 4, shown in 6, as in an embodiment of wet absorption unit 32, it can include absorption tower 31 and the sedimentation tank 322 being connected with absorption tower 321.Absorbing liquid (alkali liquor) in absorption tower 321 absorbs the CO in waste gas2, it is formed with CO3 2-, remaining waste gas is discharged from top, absorption tower 321；CO will be contained3 2-Absorbing liquid drain into sedimentation tank 322, generate carbonate deposition and also filter, the solution after filtration can return to absorption tower 321 and be reused for CO2Absorption.
Absorption tower 321 includes airtight tower body 3211, the absorbed layer 3212 being arranged on tower body 3211 inner bottom part, is arranged at least one of which packing layer 3213 above absorbed layer 3212, is arranged on the spraying mechanism 3214 above packing layer 3213 and is arranged on the demister 3215 above spraying mechanism 3214.
Absorbed layer 3212 is used for housing absorbing liquid, by absorbing liquid, waste gas is carried out absorption process.Sedimentation tank 322 connects absorbed layer 3212, can form an absorbing liquid closed circuit between the two, and absorbing liquid is delivered to be back in absorbed layer 3212 after sedimentation tank 322 carries out precipitation process from absorbed layer 3212.Waste gas after absorbed layer absorption processes up flows to packing layer 3213 in tower body 3211, spraying mechanism 3214 is to packing layer 3213 spray-absorption liquid, waste gas through packing layer 3213 is fully contacted with absorbing liquid again, increase waste gas and the time of contact of absorbing liquid and area, reach more preferable assimilation effect.The absorbing liquid of the waste gas entrained with after packing layer 3213 is retained by demister 3215.
Wherein, tower body 3211 is provided with the gas access for waste gas inlet and outlet and gas outlet.Gas access is communicated to absorbed layer 3212, and waste exhaust gases enters absorbed layer 3212 from this gas access.Further, being provided with bubbling trachea 3216 in absorbed layer 3212, this bubbling trachea 3216 connects gas access, is delivered in absorbing liquid in bubbling mode by waste gas, makes gas be absorbed by liquid absorption in bubbling mode.
Gas outlet is positioned at the top of tower body 3211, discharges for the waste gas after sequentially passing through absorbed layer 3212 and packing layer 3213.Demister 3215 in tower body 3211 between spraying mechanism 3214 and gas outlet.Preferably, tower body 3211 top is pyramidal structure, and the waste gas after can absorption being processed is concentrated to gas outlet with output.
It is additionally provided with absorbing liquid entrance and the absorbing liquid outlet being communicated to absorbed layer 3212 on tower body 3211, is respectively used to absorbing liquid be delivered in absorbed layer 3212 and absorbing liquid discharged change.
Water inlet it is also provided with further, for carrying water to regulate the concentration of absorbing liquid on tower body 3211.This water inlet is communicated to absorbed layer 3212, and is positioned at the ullage of absorbing liquid.
On tower body 3211, the position of corresponding absorbed layer 3212 is additionally provided with pH meter (not shown) and/or liquidometer (not shown), it is simple to the pH value of detection absorbing liquid and/or the liquid level of observation absorbing liquid.
Additionally, be additionally provided with at least one observation window 3217 on tower body 3211, in order to observe the absorbing state within tower body 3211.Preferably, on tower body 3211, the position of corresponding spraying mechanism 3214 is provided with observation window 3217, is used for observing spray situation.The upper position of tower body 3211 can also be provided with observation window 3217, observes the gas station after multistage absorption.
Further, absorption tower 321 also includes connecting spraying mechanism 3214 and the circulating pump 3218 of absorbed layer 3212, by the absorption liquid pump in absorbed layer 3212 to spraying mechanism 3214 to spray, it is achieved the circulated sprinkling of absorbing liquid uses, and reduces waste liquid generation amount.Circulating pump 3218 is sprayed to packing layer 3213 from the absorbing liquid of absorbed layer 3212 pumping through spraying mechanism 3214, and absorbing liquid, after packing layer 3213, may return to, in absorbed layer 3212, recycle with this.
As selection, packing layer 3213 includes gripper shoe and filling silk screen on the supporting plate.Silk screen is the silk screen with small-bore, it is simple to gas phase and the flowing of liquid phase；Gas and absorbing liquid can be fully contacted in packing layer 3213.
In embodiment illustrated in fig. 6, packing layer 3213 is provided with two-layer, between the upper and lower every setting in tower body 3211；All there is spraying mechanism 3214 that it is carried out spray-absorption liquid on each packing layer 3213.From absorbed layer 3212 out after waste gas sequentially pass through two-layer packing layer 3213 from bottom to top.
The most as shown in Figure 4, when Dry absorption unit 31 and wet absorption unit 32 connect, absorbent bed 311 and absorption tower 321 are connected, thus waste gas can first pass through and enter back into absorption tower 321 after absorbent bed 311 absorbs and carry out re-absorption process, or first pass through and enter back into absorbent bed 311 after absorption tower 321 absorbs and carry out re-absorption process.
It is to be appreciated that Dry absorption unit 31 and wet absorption unit 32 can be facilitated far-end operation by PLC control system control.
To sum up, the waste gas containing carbon-14 of nuclear power station is processed containing carbon-14 exhaust treatment system by of the present utility model, the carbon-14 material of ppmv level contained in waste gas can be reduced an order of magnitude or removal, it is to avoid reflexive waste gas is emitted in the environment of nuclear power plant and periphery thereof and have impact on Environmental Health stably.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (10)
1. an exhaust treatment system Han carbon-14, it is characterised in that include H in removing exhaust gas2The hydrogen unit that disappears, the Organic substance containing carbon-14 in waste gas is changed into CO2Catalytic oxidation unit and to CO2Carry out the absorptive unit of absorption process；Described hydrogen unit, catalytic oxidation unit and the absorptive unit of disappearing is sequentially connected with by waste gas conveying direction.
The most according to claim 1 containing carbon-14 exhaust treatment system, it is characterised in that described in the hydrogen unit that disappears include hydrogen oxygen recombination device, this hydrogen oxygen recombination device includes accommodating waste gas, for the H in waste gas2H is generated with oxygen reaction under noble metal catalyst is catalyzed2The airtight container of O；
Described catalytic oxidation unit includes the heater heated from the described waste gas disappearing hydrogen unit, and receives from the waste gas after the heating of described heater, for changing into CO with oxygen reaction containing carbon-14 Organic substance under noble metal catalyst is catalyzed in waste gas2Catalytic reactor；Described heater disappears between hydrogen unit and described catalytic reactor described in being connected to.
The most according to claim 2 containing carbon-14 exhaust treatment system, it is characterised in that described in the hydrogen unit that disappears also include that the described waste gas after offseting hydrogen carries out the first cooler cooled down, described first cooler is connected between described hydrogen oxygen recombination device and heater；
Described catalytic oxidation unit also includes the second cooler cooling down the described waste gas after catalysis oxidation, and described second cooler is connected between described catalytic reactor and absorptive unit.
4. according to described in any one of claim 1-3 containing carbon-14 exhaust treatment system, it is characterised in that described absorptive unit includes Dry absorption unit and/or wet absorption unit；
Described Dry absorption unit is in parallel with wet absorption unit and/or connects.
The most according to claim 4 containing carbon-14 exhaust treatment system, it is characterized in that, described Dry absorption unit includes the absorber processed waste gas successively and adsorber and desorption gas is introduced described adsorber so that adsorber to carry out the desorption pipeline of desorption and regeneration；The port of export of described absorber is connected with the absorption air inlet of described adsorber, and described desorption pipeline is connected with the desorption air inlet of described adsorber.
The most according to claim 5 containing carbon-14 exhaust treatment system, it is characterized in that, described desorption pipeline is provided with and described desorption gas is heated to the heater of desorption temperature and detects the temperature sensor of described desorption gas temperature, and described temperature sensor is positioned at the outlet side of described heater.
The most according to claim 5 containing carbon-14 exhaust treatment system, it is characterized in that, described Dry absorption unit also includes the absorption pipeline that the desorption gas that described adsorber desorption produces is delivered to described absorber, the discharge pipe line discharged by the desorption gas after described absorber；
Described absorption pipeline one end connects the desorption gas outlet of described adsorber, and the other end connects the entrance point of described absorber；Described discharge pipe line connects the port of export of described absorber.
The most according to claim 4 containing carbon-14 exhaust treatment system, it is characterised in that described wet absorption unit includes absorption tower；Described absorption tower include airtight tower body, be arranged on described tower body inner bottom part for housing the absorbed layer of absorbing liquid, being arranged at least one of which packing layer above described absorbed layer and be arranged on above described packing layer the spraying mechanism to described packing layer spray-absorption liquid；
It is communicated with the gas access to described absorbed layer on described tower body, in described absorbed layer, is provided with the bubbling trachea connecting described gas access, being delivered in described absorbing liquid in bubbling mode by gas；Described tower body is provided with and exports for the gas expellant gas after sequentially passing through described absorbed layer and packing layer, and described gas outlet is positioned at the top of described tower body.
The most according to claim 8 containing carbon-14 exhaust treatment system, it is characterised in that on described tower body, to be communicated with the absorbing liquid entrance to described absorbed layer and absorbing liquid outlet；And/or, described tower body is provided with at least one observation window；And/or, described tower body is provided with for carrying the water water inlet with regulation absorbing liquid concentration, and described water inlet is communicated to described absorbed layer, and is positioned at the ullage of absorbing liquid.
The most according to claim 8 containing carbon-14 exhaust treatment system, it is characterised in that in described absorption tower also includes being arranged on described tower body and be positioned at the demister above described spraying mechanism；And/or, described absorption tower also includes connecting described spraying mechanism and absorbed layer, by the absorption liquid pump in described absorbed layer to described spraying mechanism to carry out the circulating pump sprayed；
Described wet absorption unit also includes the sedimentation tank being connected with the absorbed layer on described absorption tower.
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| CN201620345706.6U CN205582519U (en) | 2016-04-21 | 2016-04-21 | Carbon containing - 14 waste gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243772A (en) * | 2020-01-15 | 2020-06-05 | 衡阳师范学院 | Device and method for improving adsorption capacity of radioactive gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111243772A (en) * | 2020-01-15 | 2020-06-05 | 衡阳师范学院 | Device and method for improving adsorption capacity of radioactive gas |
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