阅读说明：本技术 一种用于高盐放射性废液干燥桶内的微波加热装置 (A kind of microwave heating equipment in the dry bucket of radioactive liquid waste with high salt ) 是由 李正红 赵剑衡 邓德荣 吴洋 王冬 于 2019-09-20 设计创作，主要内容包括：本发明涉及一种用于高盐放射性废液干燥桶内的微波加热装置,包括顶板、微波馈入区和底板,顶板表面设有与抽风机连通的第一通孔,微波从微波馈入区的侧面馈入并照射堆芯废水的液面,底板表面设有供微波通过的第二通孔、废液补充孔、液位测量机构的安装孔以及红外温度计的安装孔,本发明将微波从微波馈入区的侧面馈入到干燥桶内,从干燥桶顶部非接触式对高盐放射性废液进行微波加热,将废液中的水变成水蒸气,通过抽风机将干燥过程中形成的水蒸气抽走,废液不断干燥浓缩并缓慢结晶形成相应的盐晶体,实现将高盐放射性废液到盐晶体的固化,实现废液的集中处置,不需要固化处理,可以直接进处置场,相对于常规水泥处理方式,减容比达到100倍。(The present invention relates to a kind of microwave heating equipments in the dry bucket of radioactive liquid waste with high salt, including top plate, microwave feed-in area and bottom plate, top board surface is equipped with the first through hole being connected to exhaust fan, microwave is from the side feed-in in microwave feed-in area and irradiates the liquid level of reactor core waste water, backplate surface is equipped with the second through-hole passed through for microwave, waste liquid complementary apertures, the mounting hole of level gauging mechanism and the mounting hole of infrared thermometer, microwave is fed into dry bucket by the present invention from the side in microwave feed-in area, it is contactless at the top of dry bucket that microwave heating is carried out to radioactive liquid waste with high salt, water in waste liquid is become into vapor, the vapor formed in drying process is taken away by exhaust fan, the constantly dry concentration of waste liquid and slowly crystallization form corresponding salt crystal, it realizes the solidification of radioactive liquid waste with high salt to salt crystal, realize the concentration of waste liquid Disposition, does not need curing process, can be directly into disposal site, and relative to traditional cements processing mode, volume reduction ratio reaches 100 times.)

1. a kind of microwave heating equipment in the dry bucket of radioactive liquid waste with high salt, which is characterized in that from top to bottom successively wrap It includes:

Top plate, surface are equipped with the first through hole being connected to exhaust fan；

Microwave feed-in area, microwave is from the side feed-in in microwave feed-in area and irradiates the liquid level of reactor core waste water；

And bottom plate, surface be equipped with the second through-hole passed through for microwave, waste liquid complementary apertures, level gauging mechanism mounting hole and The mounting hole of infrared thermometer.

2. microwave heating equipment according to claim 1, which is characterized in that the top plate from top to bottom successively includes microwave Metal screen layer and ceramic layer.

3. microwave heating equipment according to claim 1, which is characterized in that microwave feed-in area is set as square structure, Several microwave windows are opened up on its side wall.

4. microwave heating equipment according to claim 3, which is characterized in that several described microwave windows are presented along microwave The short transverse for entering area is uniformly distributed.

5. microwave heating equipment according to claim 4, which is characterized in that the inner wall in microwave feed-in area and be located at it is micro- It is equipped with microwave reflection piece at wave window, the microwave of feed-in in the horizontal direction is deflected downward.

6. microwave heating equipment according to claim 5, which is characterized in that the microwave reflection piece is made of metal, The angle of itself and microwave feed-in area inner wall is 45-60 °.

7. according to any microwave heating equipment of claim 2-6, which is characterized in that the level gauging mechanism includes super Sound liquid-level probe and the microwave barrier assembly below ultrasonic liquid level probe, the microwave barrier assembly includes outer cylinder and position In several slow-wave structure discs in outer cylinder, several described slow-wave structure discs and outer cylinder are coaxially disposed, and several are slow Wave structure disc is equidistantly arranged along vertical direction, and the working frequency of the microwave is located in the forbidden band of slow-wave structure.

8. microwave heating equipment according to claim 7, which is characterized in that the slow-wave structure disc is logical equipped with third Hole, the third through-hole of several slow-wave structure discs form central passage, and the radius of the central passage is R_b, first slow wave Structure disc to the last slow-wave structure disc spacing as slow-wave structure height, the height of the slow-wave structure is L, then R_b=0.26L.

9. microwave heating equipment according to claim 8, which is characterized in that be equipped with cooling component at the outer cylinder.

Technical field

The invention belongs to microwave treatment technical fields dry in radioactive liquid waste bucket with high salt, relate in particular to a kind of use Microwave heating equipment in the dry bucket of radioactive liquid waste with high salt.

Background technique

As soon as radioactive liquid waste processing with high salt is a technical problem in Radwastes treatment for a long time, and nuclear power unit is run Radioactive liquid waste with high salt (i.e. reactor core waste water) is continually generated, this waste liquid amount is big, difficult.Currently, China largely transports Capable or be that this radioactive liquid waste is handled using cement solidification technology in the nuclear power station founded a capital, cement solidification advantage is technology Maturation, the disadvantage is that waste increase-volume and Waste disposal are costly.Better processing mode is sought in row inherence, it may be assumed that electric heating, hot wind, Processing technique in the buckets such as conventional microwave and Microwave New Techniques, still, the above processing mode are in conceptual phase mostly at home, also There is no molding device or product.

Summary of the invention

For various deficiencies of the prior art, to solve the above-mentioned problems, it is proposed that one kind is used for radioactive liquid waste with high salt Microwave heating equipment in dry bucket can be used in combination with the dry bucket of standard, realize radioactive liquid waste with high salt by microwave The separation of Zhong Shui and salt.

To achieve the above object, the invention provides the following technical scheme:

A kind of microwave heating equipment in the dry bucket of radioactive liquid waste with high salt from top to bottom successively includes:

Top plate, surface are equipped with the first through hole being connected to exhaust fan；

Microwave feed-in area, microwave is from the side feed-in in microwave feed-in area and irradiates the liquid level of reactor core waste water；

And bottom plate, surface is equipped with the second through-hole passed through for microwave, the mounting hole of waste liquid complementary apertures, level gauging mechanism And the mounting hole of infrared thermometer.

Further, the top plate from top to bottom successively includes microwave metal screen layer and ceramic layer.

Further, microwave feed-in area is set as square structure, several microwave windows are opened up on side wall.

Further, several described microwave windows are uniformly distributed along the short transverse in microwave feed-in area.

Further, the inner wall in microwave feed-in area and be located at microwave window at be equipped with microwave reflection piece, will be along level side It is downward to the deflection of the microwave of feed-in.

Further, the microwave reflection piece is made of metal, and the angle with microwave feed-in area inner wall is 45-60 °.

Further, the level gauging mechanism includes ultrasonic liquid level probe and the microwave positioned at ultrasonic liquid level probe lower section Barrier assembly, the microwave barrier assembly include outer cylinder and several slow-wave structure discs in outer cylinder, it is described several Slow-wave structure disc and outer cylinder are coaxially disposed, and several slow-wave structure discs are equidistantly arranged along vertical direction, described micro- The working frequency of wave is located in the forbidden band of slow-wave structure.

Further, the slow-wave structure disc is equipped with third through-hole, the third through-hole shape of several slow-wave structure discs At central passage, the radius of the central passage is R_b, first slow-wave structure disc to the last slow-wave structure disc Spacing is L as slow-wave structure height, the height of the slow-wave structure, then R_b=0.26L.

Further, cooling component is equipped at the outer cylinder.

The beneficial effects of the present invention are:

Microwave is fed into dry bucket from the side in microwave feed-in area, it is contactless to radiation with high salt at the top of dry bucket Property waste liquid carry out microwave heating, the water in waste liquid is become into vapor, the vapor that will be formed in drying process by exhaust fan It takes away, the constantly dry concentration of waste liquid and slowly crystallization form corresponding salt crystal, realize radioactive liquid waste with high salt to salt crystal Solidification, realize centrally disposing for waste liquid, do not need curing process, can be directly into disposal site, relative to traditional cements processing Mode, volume reduction ratio reach 100 times.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is the structural schematic diagram of microwave window；

Fig. 3 is the structural schematic diagram of bottom plate；

Fig. 4 is the structural schematic diagram of level gauging mechanism.

In attached drawing: 1- top plate, 2- microwave feed-in area, 3- bottom plate, 4- first through hole, 5- microwave window, 6- level gauging machine Mounting hole, 7- waste liquid complementary apertures, the mounting hole of 8- infrared thermometer, 9- level gauging mechanism, the 10- microwave reflection piece, 11- of structure Step surface, 12- microwave barrier assembly, 13- ultrasonic liquid level probe, 14- slow-wave structure disc, 15- third through-hole, 16- outer cylinder, The second through-hole of 17-.

Specific embodiment

It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention Technical solution of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application. In addition, the direction word mentioned in following embodiment, such as "upper" "lower" " left side " " right side " etc. are only the directions with reference to attached drawing, because This, the direction word used is for illustrative and not limiting the invention.