CN106044860A - Integrated furnace for drying and roasting uranium dioxide nuclear core - Google Patents
Integrated furnace for drying and roasting uranium dioxide nuclear core Download PDFInfo
- Publication number
- CN106044860A CN106044860A CN201610629598.XA CN201610629598A CN106044860A CN 106044860 A CN106044860 A CN 106044860A CN 201610629598 A CN201610629598 A CN 201610629598A CN 106044860 A CN106044860 A CN 106044860A
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- China
- Prior art keywords
- roasting
- drying
- uranium dioxide
- conveyer belt
- integrated furnace
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G43/00—Compounds of uranium
- C01G43/01—Oxides; Hydroxides
- C01G43/025—Uranium dioxide
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention relates to the technical field of equipment for drying and roasting nuclear fuel and provides an integrated furnace for drying and roasting a uranium dioxide nuclear core. The furnace comprises a drying area and a roasting area arranged side by side in a horizontal direction, wherein the heating temperature of the roasting area is higher than that of the drying area; and a conveyor driven by a transmission gear, provided with a plurality of charging trays for accommodating nuclear core microspheres, and used for conveying the nuclear core microspheres from the drying area to the roasting area. The bottom of the roasting area is provided with an air inlet and the top is provided with an air outlet. In the moving direction of the material, the whole integrated furnace is divided into a drying area and a roasting area, and nuclear core microspheres are conveyed through the drying area and the roasting area in sequence through the conveyor so as to complete drying and roasting of the nuclear core microspheres at one time, thereby preventing environmental pollution due to material handling between the two steps. The whole process is continuously carried out, and the production efficiency is high.
Description
Technical field
The present invention relates to being dried and roasting apparatus technical field of nuclear fuel, specifically provide a kind of uranium dioxide core and do
Dry roasting integrated stove.
Background technology
During China's HTGR demonstration project (HTR-PM) fuel production, use based on 10MW HTGR
(HTR-10) period full gelatinizing process and the external gelatinizing process that improves prepares Uranous oxide ceramic microsphere.Dispersion gelling after little
Ball needs through be aged, washs, is dried, roasting, reduce and the operation such as sintering, can get the Uranous oxide ceramic microsphere of densification.
Gel ball after washing discharges the moisture in microsphere by dry run, and dry run need to slowly carry out preventing micro-
Ball ftractures, and dry run is carried out in air atmosphere.Containing part free water and water of crystallization in dried microsphere, also comprise poly-
The impurity such as the ammonium nitrate that the Organic substance such as vinyl alcohol, acetylene and gelatinization produce, it is necessary to remove in roasting process, roasting process
Carry out in air atmosphere, air mass flow need to be controlled, prevent from reacting and the most acutely cause microsphere to ftracture.Due to be dried with
Two technical processs of roasting are all carried out in air atmosphere, and sintering temperature is higher than baking temperature, therefore can be by two techniques
A stove completes.
Prior art needs will be dried with this two step of roasting separately, and its step needs the cooling of drying process, discharge process
The processes such as intensification with roasting technique, charging, owing to raw material has radioactive pollution, raw material transfer meeting between two steps
Pollute environment, and process is discontinuous, is not suitable for the production of high-volume scale.
Summary of the invention
(1) to solve the technical problem that
During the present invention is to solve traditional handicraft prepares Uranous oxide ceramic microsphere, need to be dried and this two step of roasting
Separately, cause material handling environmental pollution between two steps, and process is discontinuous, the technical problem that production efficiency is low.
(2) technical scheme
For solving above-mentioned technical problem, the invention provides a kind of uranium dioxide core drying and roasting integrated furnace, this stove
Body includes dry section and the roast area of laid out in parallel in the horizontal direction, the more described dry section of heating-up temperature of described roast area
Heating-up temperature is high；Also including being driven, by actuating device, the conveyer belt run, described conveyer belt is provided with multiple for accommodating nuclear core
The charging tray of microsphere, described conveyer belt is for being sent to described roast area by described nuclear core microsphere by described dry section；Described roasting
The bottom in district is provided with air inlet, and top is provided with air vent.
Preferably, on the direction of transfer of conveyer belt, described air inlet is opened in the tail end of described roast area, described aerofluxus
Mouth is opened in the head end of described roast area.
Preferably, described conveyer belt is the multilamellar of longitudinally arrangement.
Preferably, described conveyer belt is provided with several air vents.
Preferably, the bottom of described charging tray is mesh-like structure.
Preferably, being provided with preheating device at described air inlet, described preheating device is for entering by described air inlet
Air heat.
Preferably, the air inflow of described air inlet is adjustable.
Preferably, described air vent is communicated with exhaust gas processing device.
Preferably, in the transmission reversely of conveyer belt, the heating-up temperature of described dry section gradually rises.
Preferably, on the direction of transfer of conveyer belt, the heating-up temperature of described roast area gradually rises.
(3) beneficial effect
A kind of uranium dioxide core drying and roasting integrated furnace that the present invention provides, including laid out in parallel in the horizontal direction
Dry section and roast area, the heating-up temperature of roast area is high compared with the heating-up temperature of dry section；Also include being driven fortune by actuating device
The conveyer belt of row, conveyer belt is provided with multiple charging tray for accommodating nuclear core microsphere, and conveyer belt is used for nuclear core microsphere by being dried
District is sent to roast area；The bottom of roast area is provided with air inlet, and top is provided with air vent.The present invention is on the traffic direction of material
Whole integrated furnace is divided into dry section and roast area, then is sequentially transmitted nuclear core microsphere by dry section and roasting by conveyer belt
District, makes being dried of nuclear core microsphere once complete with roasting, thus avoids material handling environmental pollution between two steps, and whole mistake
Journey is carried out continuously, and production efficiency is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of uranium dioxide core drying and roasting integrated furnace of the embodiment of the present invention.
Fig. 2 is the top view of the charging tray of the embodiment of the present invention.
Reference:
1, dry section；2, roast area；3, conveyer belt；4, actuating device；5, air inlet；6, air vent；7, charging tray.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is described in further detail.Hereinafter implement
Example is used for illustrating the present invention, but is not limited to the scope of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " connects " and should do
Broadly understood, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be joined directly together,
Can also be indirectly connected to by intermediary.For the ordinary skill in the art, can understand above-mentioned with concrete condition
Term concrete meaning in the present invention.
As it is shown in figure 1, a kind of uranium dioxide core drying and roasting integrated furnace that the embodiment of the present invention provides, it is included in water
Square upwards dry section 1 of laid out in parallel and roast area 2, the heating-up temperature of roast area 2 is high compared with the heating-up temperature of dry section 1；Also
Including being driven the conveyer belt 3 of operation by actuating device 4, conveyer belt 3 is provided with multiple charging tray 7 for accommodating nuclear core microsphere, passes
Send band 3 for nuclear core microsphere is sent to roast area 2 by dry section 1；The bottom of roast area 2 is provided with air inlet 5, and top is provided with row
QI KOU 6.
After material loads charging tray 7, it is placed on conveyer belt 3, starts body of heater heating schedule and actuating device 4, be passed through compression
Air also controls flow, opens air vent 6, and charging tray 7 slowly runs, and gradually arrives baking temperature and ensures temperature retention time.Charging tray 7
After dry section 1, continuing slowly to run, owing to sintering temperature is higher than baking temperature, temperature continues to raise, and gradually arrives roasting
Temperature also ensures temperature retention time, and insulation terminates rear charging tray 7 and continues to run with, and gradually lowers the temperature, finally leaves roast area 2, and it is qualified to obtain
Material.If with charging and drawing mechanism match, the automatic loading and unloading of material can be realized, production efficiency is greatly improved.
Wherein, on the direction of transfer of conveyer belt 3, air inlet 5 is preferably opened in the tail end of roast area 2, and air vent 6 is offered
At the head end of roast area 2, the air-flow so entering into roast area 2 is not only from the bottom to top through conveyer belt 3, and air-flow water
Square to movement still contrary with the moving direction of conveyer belt 3, it may thereby be ensured that the air-flow passed through is right in roast area 2
Brushing of conveyer belt 3 is uniform, it is ensured that uniform to the nuclear core microsphere roasting on conveyer belt 3, improves roasting effect.
Be preferably provided with several air vents on conveyer belt 3, so can enable in roast area 2 air-flow from bottom to top by
Air vent on conveyer belt 3 passes and more brushes on nuclear core microsphere, such that it is able to promote roasting effect.Further,
As in figure 2 it is shown, the bottom of charging tray 7 is preferably the mesh-like structure of porous, so make the gas passed by the vent on conveyer belt 3
Stream can further pass through charging tray 7 and act directly on nuclear core microsphere, and roasting effect thus can be substantially improved, and improves roasting effect
Rate.
It addition, be preferably provided with preheating device at air inlet 5, preheating device is for entering the air entered by air inlet 5
Row heating, thus makes air-flow rise to uniform temperature before entering roast area 2 in advance, thus avoids cold air to enter roast area
2 and interference to sintering temperature.And the charge flow rate of this air inlet 5 is the most adjustable, so can be according to different nuclear core microspheres
Roasting demand, select be suitable for size charge flow rate.Same, the transmission speed of actuating device 4 is the most adjustable, thus
Dry and roasting time can be required that longer nuclear core microsphere carries out being dried and roasting of long period；And to being dried and during roasting
Between require shorter nuclear core microsphere carry out the short period be dried and roasting, be finally reached optimum roasting effect.
The multilamellar of the preferably longitudinal arrangement of conveyer belt 3, i.e. multilamellar transmission are treated as upper and lower parallel arrangement, so can be the most right
More nuclear core microsphere is dried and roasting, can improve efficiency, and charge air flow can be successively through the ventilation on conveyer belt 3
Hole and act on the nuclear core microsphere in each layer, be dried and the quality of roasting so also not interfering with.
In the transmission reversely of conveyer belt 3, the heating-up temperature of dry section 1 gradually rises, and the heating-up temperature of roast area 2 is gradually
Raising, thus make nuclear core microsphere being heated during transmitting change in gradient, charging tray 7 is when dry section 1 and roast area 2 run
Can slowly arrive dry and sintering temperature and can ensure temperature retention time, being additionally, since dry run with roasting process is directly to hold in the mouth
Connecing, nuclear core microsphere as cooling down when transfer in traditional handicraft, but can't make the temperature of whole process linearly rise
Height, does not have the phenomenon of temperature jump, so that nuclear core microsphere does not haves the phenomenon of cracking.
Air vent 6 is preferably communicated with exhaust gas processing device, and this exhaust gas processing device is for the waste gas by participating in roasting process
Air inlet processes, it is to avoid waste gas is directly discharged into atmospheric pollution environment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and replacement, these improve and replace
Also should be regarded as protection scope of the present invention.
Claims (10)
1. a uranium dioxide core drying and roasting integrated furnace, it is characterised in that include laid out in parallel in the horizontal direction
Dry section and roast area, the heating-up temperature of the more described dry section of heating-up temperature of described roast area is high；Also include by actuating device
Driving the conveyer belt run, described conveyer belt is provided with multiple charging tray for accommodating nuclear core microsphere, and described conveyer belt is used for will
Described nuclear core microsphere is sent to described roast area by described dry section；The bottom of described roast area is provided with air inlet, and top is provided with
Air vent.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that in the biography of conveyer belt
Sending on direction, described air inlet is opened in the tail end of described roast area, and described air vent is opened in the head end of described roast area.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that described conveyer belt is
The longitudinally multilamellar of arrangement.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that on described conveyer belt
It is provided with several air vents.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 4, it is characterised in that the end of described charging tray
Portion is mesh-like structure.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that at described air inlet
Place is provided with preheating device, and described preheating device is for heating the air entered by described air inlet.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that described air inlet
Air inflow is adjustable.
Uranium dioxide core drying and roasting integrated furnace the most according to claim 1, it is characterised in that described air vent is even
It is connected with exhaust gas processing device.
9. according to the uranium dioxide core drying and roasting integrated furnace described in any one of claim 1 to 8, it is characterised in that
In the transmission of conveyer belt reversely, the heating-up temperature of described dry section gradually rises.
10. according to the uranium dioxide core drying and roasting integrated furnace described in any one of claim 1 to 8, it is characterised in that
On the direction of transfer of conveyer belt, the heating-up temperature of described roast area gradually rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629598.XA CN106044860A (en) | 2016-08-03 | 2016-08-03 | Integrated furnace for drying and roasting uranium dioxide nuclear core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629598.XA CN106044860A (en) | 2016-08-03 | 2016-08-03 | Integrated furnace for drying and roasting uranium dioxide nuclear core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106044860A true CN106044860A (en) | 2016-10-26 |
Family
ID=57197460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610629598.XA Pending CN106044860A (en) | 2016-08-03 | 2016-08-03 | Integrated furnace for drying and roasting uranium dioxide nuclear core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106044860A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937097A (en) * | 2006-10-16 | 2007-03-28 | 清华大学 | Technology for making nuclear fuel element core by external gelatinization method |
| CN102232231A (en) * | 2008-12-01 | 2011-11-02 | 德国纽克姆技术公司 | Method and arrangement for producing fuel cores |
| CN103366846A (en) * | 2013-07-19 | 2013-10-23 | 清华大学 | Uranium dioxide core aging tank, and system and method for aging, cleaning and drying |
| CN205953551U (en) * | 2016-08-03 | 2017-02-15 | 清华大学 | Dry calcination integration stove of uo2 nuclear core |
-
2016
- 2016-08-03 CN CN201610629598.XA patent/CN106044860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937097A (en) * | 2006-10-16 | 2007-03-28 | 清华大学 | Technology for making nuclear fuel element core by external gelatinization method |
| CN102232231A (en) * | 2008-12-01 | 2011-11-02 | 德国纽克姆技术公司 | Method and arrangement for producing fuel cores |
| CN103366846A (en) * | 2013-07-19 | 2013-10-23 | 清华大学 | Uranium dioxide core aging tank, and system and method for aging, cleaning and drying |
| CN205953551U (en) * | 2016-08-03 | 2017-02-15 | 清华大学 | Dry calcination integration stove of uo2 nuclear core |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20161026 |