CN205722824U - A kind of processing means of tritium-containing liquid waste - Google Patents
A kind of processing means of tritium-containing liquid waste Download PDFInfo
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- CN205722824U CN205722824U CN201620658564.9U CN201620658564U CN205722824U CN 205722824 U CN205722824 U CN 205722824U CN 201620658564 U CN201620658564 U CN 201620658564U CN 205722824 U CN205722824 U CN 205722824U
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- tritium
- containing liquid
- liquid waste
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Abstract
The utility model discloses the processing means of a kind of tritium-containing liquid waste, including the gas sampling unit being connected with source of the gas, the steam sample injection unit being connected with tritium-containing liquid waste source, the heating and thermal insulation being all connected with gas sampling unit and steam sample injection unit mixes gas unit, the catalytic reaction unit that gas unit is connected, and the gas condensation drying unit being connected with catalytic reaction unit is mixed with heating and thermal insulation.This utility model is ingenious make use of CO/H2O transformationreation processes tritium-containing liquid waste, more convenient has been reliably achieved containing the removal of tritium in HTO, passes through TiO simultaneously2Preparing novel catalyst, make CO conversion ratio be greatly improved, the process making catalytic reaction is relatively reliable stable.
Description
Technical field
This utility model relates to technical field of radioactive wastewater treatment, specifically, relates to the place of a kind of tritium-containing liquid waste
Reason device, realizes the removal of tritium in waste water by CO transformationreation, can realize the process of low concentration tritium-containing liquid waste (HTO), especially
It is suitable for the process of a large amount of tritium-containing liquid wastes.
Background technology
Emission problem for tritium-containing liquid waste is always the study hotspot of Spent Radioactive water treatment field.Due to traditional same
Position element partition method application in terms of tritium-containing liquid waste is restricted, various countries scientist in succession propose membrane technology and resins exchange,
The methods such as enrichment, and carried out preliminary feasibility study.Researcher puies forward the angle of tritium from heavy water have been carried out and has studied widely, and
Process about tritium-containing liquid waste and CANDU-HWR heavy water reclaims in tritium and obtains actual application at reprocessing plant, current commonly use containing tritium
Method for treating water is all that the technology according to heavy water detritiation grows up, and mostly uses vapor catalyzed switching technology (VPCE), liquid
The technology such as phase catalytic exchange technology (LPCE) and combination electrolytic catalysis switching technology (CECE).
But there is more problem for processing the biggest volume low-concentration tritium-containing liquid waste in these methods.First, from reaction
For process, VPCE and LPCE is by the tritium containing tritium heavy water from liquid material exchange to gas phase, due to exchange gas D2Consumption is very big,
(D in VPCE2/ DTO mol ratio is 2, D in LPCE2/ DTO mole is 3), therefore VPCE and LPCE is the dilution of tritium, hands over
Diluent gas (the D swapped out2/ DT) increase the weight of isotopic separation unit burden, cost of material and process costs are the highest.?
During CECE, the heavy water containing tritium obtains concentration in electrolyzer, reduces isotopic separation unit burden, but electrolytic process needs
Consume mass energy.Additionally, this several method can not meet far away the demand that big volume low-concentration HTO processes in disposal ability.
Transformationreation (CO+H2O→CO2+H2) be an important industrial reaction, synthesis ammonia, synthesizing methanol, hydrogen manufacturing and
The fields such as town gas industry are widely used, and according to transformationreation principle, can be used for the reaction of CO/HTO.
Utility model content
For overcoming the problems referred to above of the prior art, this utility model provides a kind of simple in construction, with low cost, process effect
The best processing means for tritium-containing liquid waste.
To achieve these goals, the technical solution adopted in the utility model is as follows:
The processing means of a kind of tritium-containing liquid waste, including the gas sampling unit being connected with source of the gas, is connected with tritium-containing liquid waste source
Steam sample injection unit, the heating and thermal insulation being all connected with gas sampling unit and steam sample injection unit mixes gas unit, with heating protect
The catalytic reaction unit that the mixed gas unit of temperature connects, and the gas condensation drying unit being connected with catalytic reaction unit.
Specifically, described source of the gas includes noble gas source and CO source of the gas；Described gas sampling unit includes and indifferent gas
The noble gas air inlet branch road that bromhidrosis source connects, and be connected with CO source of the gas and CO with noble gas air inlet branch circuit parallel connection enter
Gas branch road, described noble gas air inlet branch road and CO air inlet branch road are constituted by the air relief valve being sequentially connected in series and mass flowmenter,
Wherein, described CO air inlet branch road also includes the filter being serially connected with on this CO air inlet branch road.
Specifically, described steam sample injection unit includes microprocessor pump drive, vaporizer and the steam-flow meter being sequentially connected in series, its
In, described microprocessor pump drive is connected with tritium-containing liquid waste source, and described steam-flow meter mixes gas unit and is connected with heating and thermal insulation.
Specifically, described heating and thermal insulation mixes gas unit and includes mixed air-capacitor device, and at least two are arranged side by side and are located at mixed air-capacitor device
Interior geometric ratio heating rod, and the intelligent controller being connected with all geometric ratio heating rods, wherein, the air inlet of described mixed air-capacitor device
Being arranged on end, its gas outlet is arranged at its lower end, and the airflow direction in this mixed air-capacitor device sets with described geometric ratio heating rod
Put direction vertical.
Specifically, described catalytic reaction unit include by seamless 304 stainless steel materials make with inlet and outlet
Reactor, is arranged at the filter response in Reactor inlet and outlet, is arranged at the heat-insulation layer of reactor outer wall, and with guarantor
The heater that temperature layer connects.
Compared with prior art, this utility model has the advantages that
This utility model is ingenious make use of CO/H2O transformationreation processes tritium-containing liquid waste, and more convenient being reliably achieved contains
The removal of tritium in HTO, passes through TiO simultaneously2Prepare novel catalyst, make CO conversion ratio be greatly improved, make the mistake of catalytic reaction
Journey is relatively reliable stable, is with a wide range of applications, and is suitable for popularization and application.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of processing means in this utility model.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings, and embodiment of the present utility model includes
But it is not limited to the following example.
Embodiment
As it is shown in figure 1, the processing means of this tritium-containing liquid waste, including the gas sampling unit 1 being connected with source of the gas, give up with containing tritium
The steam sample injection unit 2 that water source connects, the heating and thermal insulation being all connected with gas sampling unit and steam sample injection unit mixes gas unit
3, mix the catalytic reaction unit 4 that gas unit is connected with heating and thermal insulation, and the gas condensation being connected with catalytic reaction unit is dried
Unit 5.
Specifically, described source of the gas includes noble gas source and CO source of the gas；Described gas sampling unit includes and indifferent gas
The noble gas air inlet branch road that bromhidrosis source connects, and be connected with CO source of the gas and CO with noble gas air inlet branch circuit parallel connection enter
Gas branch road, described noble gas air inlet branch road and CO air inlet branch road are by the air relief valve 11 being sequentially connected in series and mass flowmenter 12 structure
Becoming, wherein, described CO air inlet branch road also includes the filter 13 being serially connected with on this CO air inlet branch road.
Specifically, described steam sample injection unit includes microprocessor pump drive 21, vaporizer 22 and the steam flow being sequentially connected in series
Meter 23, wherein, described microprocessor pump drive is connected with tritium-containing liquid waste source, and described steam-flow meter and heating and thermal insulation mix gas unit even
Connect.
Specifically, described heating and thermal insulation mixes gas unit and includes mixed air-capacitor device, and at least two are arranged side by side and are located at mixed air-capacitor device
Interior geometric ratio heating rod, and the intelligent controller being connected with all geometric ratio heating rods, wherein, the air inlet of described mixed air-capacitor device
Being arranged on end, its gas outlet is arranged at its lower end, and the airflow direction in this mixed air-capacitor device sets with described geometric ratio heating rod
Put direction vertical.
Specifically, described catalytic reaction unit include by seamless 304 stainless steel materials make with inlet and outlet
Reactor, is arranged at the filter response in Reactor inlet and outlet, is arranged at the heat-insulation layer of reactor outer wall, and with guarantor
The heater that temperature layer connects.
Processing means based on above-mentioned tritium-containing liquid waste, this utility model also provides for the processing method of a kind of tritium-containing liquid waste, bag
Include following steps:
(S1) in described catalytic reaction unit, 0.5%Pt/TiO is loaded2Catalyst, amount of fill is 500g；
(S2) open in described gas sampling unit and be passed through indifferent gas in processing means described in noble gas air inlet Zhi Luxiang
Body purges, and stops purging when the inert gas concentration in the exit of described catalytic reaction unit is more than 99.5%；
(S3) close in described gas sampling unit noble gas air inlet branch road and open CO air inlet branch road, to described process
It is passed through CO in device, heats described heating and thermal insulation simultaneously and mix gas unit and described catalytic reaction unit all to 270 DEG C；
(S4) open described steam sample injection unit, tritium-containing liquid waste is converted into containing HTO steam, and presses the flow of 1000g/h
Mix feeding steam Han HTO in gas unit to described heating and thermal insulation, make described heating and thermal insulation mix gas unit simultaneously and include HTO steam
It it is 270 DEG C with the mixing temperature of CO；
(S5) enter generation transformationreation in described catalytic reaction unit containing after HTO steam and CO mixing, produce CO2、H2、
HT and T2Enter described gas condensation drying unit；
(S6) gas of entrance is cooled to 30 DEG C by described gas condensation drying unit, uses molecular sieve adsorption to make in gas
Water content be down to below 1ppm.
Further, described gas condensation drying unit expellant gas is separated, wherein, CO reuse to described gas
Body sample injection unit, CO2 emission treatment, hydrogen and isotope gas thereof reclaim.
In order to reduce processing cost, it is preferable that this processing method is carried out at ambient pressure.
Further, described 0.5%Pt/TiO2Catalyst is prepared by following steps:
A () takes predecessor TiO2Powder or granule are stand-by at 120 DEG C of drying 12h, and take 10g H2PtCl6·6H2O is dissolved in
500ml ethanol prepares platinum acid chloride solution stand-by；
B () weighs the predecessor TiO that step (a) is dried2Powder or granule 30g put in rotary flask as carrier, and
Adding deionized water 100ml in rotary flask, stirring rotates 30min；
C () measures the platinum acid chloride solution 20ml prepared in step (a), be slowly added in rotary flask, soak at normal temperatures
Stain 2h；
D rotary flask is heated to 40 DEG C by (), and rotation limit, limit dipping, until the mixed solution in rotary flask is evaporated to
Obvious liquid is not had in chamber wall；
E () puts into evaporating remaining solids in rotary flask in baking oven after dry 12h, then put it in Muffle furnace
With 550 DEG C of roasting 4h；
F material after roasting is carried out H with tube furnace by ()2Reduction, then natural cooling prepares described catalyst.
Wherein, described 0.5%Pt/TiO is used2It is more than 80% that catalyst carries out the CO conversion ratio of transformationreation.
Further, in described step (f), H is carried out2Before reduction, first being passed through nitrogen in tube furnace makes described roasting
After material be in nitrogen protection environment in.Further, H2After reduction, stop being passed through H2, and it is continually fed into nitrogen when its natural cooling
Gas keeps the nitrogen protection environment in tube furnace.
Above-described embodiment is only preferred embodiment of the present utility model, the not restriction to this utility model protection domain,
In every case use design principle of the present utility model, and carry out non-creativeness work on this basis and the change made, all should
Within belonging to protection domain of the present utility model.
Claims (5)
1. the processing means of a tritium-containing liquid waste, it is characterised in that include the gas sampling unit being connected with source of the gas, gives up with containing tritium
The steam sample injection unit that water source connects, the heating and thermal insulation being all connected with gas sampling unit and steam sample injection unit mixes gas unit,
Mix the catalytic reaction unit that gas unit is connected with heating and thermal insulation, and the gas condensation being connected with catalytic reaction unit is dried single
Unit.
The processing means of a kind of tritium-containing liquid waste the most according to claim 1, it is characterised in that described source of the gas includes indifferent gas
Bromhidrosis source and CO source of the gas；Described gas sampling unit includes the noble gas air inlet branch road being connected with noble gas source, and
That be connected with CO source of the gas and with noble gas air inlet branch circuit parallel connection CO air inlet branch road, described noble gas air inlet branch road and CO enter
Gas branch road is constituted by the air relief valve being sequentially connected in series and mass flowmenter, and wherein, described CO air inlet branch road also includes being serially connected with this
Filter on CO air inlet branch road.
The processing means of a kind of tritium-containing liquid waste the most according to claim 1, it is characterised in that described steam sample injection unit bag
Including microprocessor pump drive, vaporizer and the steam-flow meter being sequentially connected in series, wherein, described microprocessor pump drive is with tritium-containing liquid waste source even
Connecing, described steam-flow meter mixes gas unit and is connected with heating and thermal insulation.
The processing means of a kind of tritium-containing liquid waste the most according to claim 1, it is characterised in that described heating and thermal insulation mixes gas list
Unit includes mixed air-capacitor device, and at least two are arranged side by side the geometric ratio heating rod being located in mixed air-capacitor device, and heat with all geometric ratios
The intelligent controller that rod connects, wherein, the air inlet of described mixed air-capacitor device is arranged on end, and its gas outlet is arranged under it
End, the airflow direction in this mixed air-capacitor device is vertical with the setting direction of described geometric ratio heating rod.
The processing means of a kind of tritium-containing liquid waste the most according to claim 1, it is characterised in that described catalytic reaction unit bag
Include the reactor with inlet and outlet being made up of seamless 304 stainless steel materials, be arranged in Reactor inlet and outlet
Filter response, is arranged at the heat-insulation layer of reactor outer wall, and the heater being connected with heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620658564.9U CN205722824U (en) | 2016-06-29 | 2016-06-29 | A kind of processing means of tritium-containing liquid waste |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620658564.9U CN205722824U (en) | 2016-06-29 | 2016-06-29 | A kind of processing means of tritium-containing liquid waste |
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| CN205722824U true CN205722824U (en) | 2016-11-23 |
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| CN201620658564.9U Expired - Fee Related CN205722824U (en) | 2016-06-29 | 2016-06-29 | A kind of processing means of tritium-containing liquid waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976884A (en) * | 2016-06-29 | 2016-09-28 | 中国工程物理研究院材料研究所 | Treatment device and treatment method for tritium-containing wastewater |
| CN106586961A (en) * | 2016-12-13 | 2017-04-26 | 中国工程物理研究院材料研究所 | Tritiated water preparation apparatus and method |
-
2016
- 2016-06-29 CN CN201620658564.9U patent/CN205722824U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976884A (en) * | 2016-06-29 | 2016-09-28 | 中国工程物理研究院材料研究所 | Treatment device and treatment method for tritium-containing wastewater |
| CN106586961A (en) * | 2016-12-13 | 2017-04-26 | 中国工程物理研究院材料研究所 | Tritiated water preparation apparatus and method |
| CN106586961B (en) * | 2016-12-13 | 2018-09-07 | 中国工程物理研究院材料研究所 | Surabaya preparation facilities and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170629 |