Radioactive waste incineration plant

Abstract

The present invention relates to a radioactive waste calcining device, comprising a calcining furnace and a plurality of feed assemblies. The calcining furnace comprises a calcining chamber and a feed opening connected to the calcining chamber, and the calcining chamber has a plurality of combustion sections. Each group of feed assemblies at least partially extends into the feed opening, and the feed assembly is used to feed materials into a corresponding combustion section in the calcining chamber, and the combustion temperature ranges of the plurality of combustion sections are different. Each group of feed assemblies is used to feed different materials with different calorific values. The radioactive waste calcining device provided by the present invention realizes zoned feeding by setting a plurality of feed openings and combining a plurality of feed assemblies, and introduces materials with different calorific values ​​into the calcining chamber of the calcining furnace by zones, and can more reasonably utilize the temperatures of different zones in the calcining furnace, thereby matching different temperature zones in the calcining furnace according to materials with different calorific values, and improving the heat utilization rate in the calcining furnace.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive waste volume reduction, in particular to a radioactive waste calcining device. Background Art

[0002] Volume reduction refers to minimizing the volume of radioactive waste during waste treatment to reduce storage, transportation and disposal costs. When heat treatment is performed on radioactive waste generated by nuclear facilities (such as waste resin, concentrate and sludge), it is necessary to heat treat it through a radioactive waste calcination device. However, the current radioactive waste calcination device is difficult to reasonably utilize the heat in the furnace when feeding. Summary of the invention

[0003] Based on this, it is necessary to provide a radioactive waste calcining device that can improve heat utilization rate, so as to solve the problem of low heat utilization rate in the furnace of the radioactive waste calcining device when calcining materials.

[0004] A radioactive waste calcining device, comprising:

[0005] A calcining furnace comprises a calcining chamber and a feed opening communicating with the calcining chamber; the calcining chamber has a plurality of combustion sections; and

[0006] A plurality of feed assemblies, each of which at least partially extends into the feed opening, and the feed assemblies are used to feed materials into a corresponding combustion section in the calcining chamber, and the combustion temperature ranges of the plurality of combustion sections are different;

[0007] Each group of feeding components is used to feed different materials with different calorific values.

[0008] In one embodiment, a plurality of combustion sections are arranged in sequence along the axis direction of the calcining furnace;

[0009] The combustion temperature intervals of the plurality of combustion sections at least partially do not overlap.

[0010] In one embodiment, the calcining chamber has three combustion sections arranged along the axis direction of the calcining furnace; the three combustion sections are respectively defined as a first combustion section, a second combustion section and a third combustion section;

[0011] Among them, the upper critical value of the combustion temperature interval of the first combustion stage and the upper critical value of the combustion temperature interval of the third combustion stage are both smaller than the upper critical value of the combustion temperature interval of the second combustion stage.

[0012] In one of the embodiments, the radioactive waste calcining device further comprises an air inlet duct, and the air inlet duct at least partially extends into the calcining chamber.

[0013] In one embodiment, one end of the air inlet duct is located in the second combustion section, and the other end extends from the first combustion section or the third combustion section.

[0014] In one embodiment, the feed assembly includes a material storage member and a feed pipe connected to the material storage member;

[0015] The feed pipe at least partially extends into the feed opening, and the feed pipe is used to feed the material into the calcining chamber.

[0016] In one of the embodiments, the radioactive waste calcining device further includes a box having a containing cavity;

[0017] The calcining furnace is accommodated in the accommodating cavity.

[0018] In one of the embodiments, the housing is configured as a negative pressure housing.

[0019] In one of the embodiments, the radioactive waste calcining device further includes an adjustment seat;

[0020] The adjustment seat is arranged on a side of the calcining furnace away from the feeding assembly so as to adjust the calcining furnace within a preset angle range.

[0021] In one embodiment, the preset angle range includes 0 degrees to 5 degrees.

[0022] In one of the embodiments, the radioactive waste calcining device further comprises a cooling pipe, which is installed on the outer wall of the calcining furnace;

[0023] The cooling pipe is used to pass the coolant to cool the calcining furnace.

[0024] The above-mentioned radioactive waste calcining device realizes zoned feeding by setting multiple feed openings and combining multiple groups of feed components, and introduces materials with different calorific values ​​into the calcining chamber of the calcining furnace in zones. It can more reasonably utilize the temperatures of different zones in the calcining furnace, thereby matching different temperature zones in the calcining furnace according to materials with different calorific values, thereby improving the heat utilization rate in the calcining furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a radioactive waste calcining device according to an embodiment of the present invention;

[0026] Figure 2 A side view of a radioactive waste calcining device according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic structural diagram of a box body according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 100. Radioactive waste calcining device; 10. calcining furnace; 111. first combustion section; 112. second combustion section; 113. third combustion section; 12. feed opening; 13. discharge port; 20. feed assembly; 21. storage part; 21a. silo; 21b. liquid preparation bottle; 22. feed pipe; 23. feed part; 23a. screw feeder; 23b. peristaltic pump; 30. air inlet duct; 40. box; 41. accommodating cavity; 42. display module; 43. USB interface; 50. adjustment seat; 51. machine base; 52. adjustment part; 53. roller; 60. cooling pipe; 70. receiving box; 80. heater; 85. thermocouple; 90. thermal insulation cotton; 95. moving wheel. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0037] When feeding current radioactive waste calcination equipment, multiple materials are usually mixed thoroughly and evenly before being introduced into the furnace for calcination. However, the heat distribution in the furnace is uneven, making it difficult to reasonably match the corresponding furnace heat for different materials, increasing the input of external heating energy.

[0038] The inventors of this application have noticed that different materials often have different calorific values, and there are differences in the combustion temperature ranges of different areas of the calcining furnace. It is difficult to reasonably match different combustion temperature ranges according to the physical and chemical properties of each material by mixing all the materials. In addition, it is very easy to cause blockage when the materials are uniformly introduced into the furnace after mixing, and in the high-temperature calcining environment, the organic components in different materials have too long contact time, and chemical reactions will occur and local coking will occur.

[0039] Based on this, the embodiments of the present invention can effectively improve the utilization rate of the heat in the furnace by improving the heat distribution in the furnace, thereby avoiding the problems mentioned above. The radioactive waste calcining device provided by the embodiments of the present invention is described below in conjunction with the relevant descriptions of some embodiments.

[0040] For the convenience of description, the drawings only show structures related to the embodiments of the present invention.

[0041] Figure 1 A schematic structural diagram of a radioactive waste calcining device 100 in one embodiment of the present invention is shown; Figure 2 FIG. 1 shows a side view of a radioactive waste calcining device 100 according to an embodiment of the present invention.

[0042] Combination Figure 1 and Figure 2 As shown, a radioactive waste calcining device 100 provided in one embodiment of the present invention comprises a calcining furnace 10 and a plurality of feed assemblies 20. The calcining furnace 10 comprises a calcining chamber and a feed opening 12 connected to the calcining chamber, and the calcining chamber has a plurality of combustion sections. Each group of feed assemblies 20 at least partially extends into the feed opening 12, and the feed assemblies 20 are used to feed materials into a corresponding combustion section in the calcining chamber, and the combustion temperature ranges of the plurality of combustion sections are different. Among them, each group of feed assemblies 20 is used to feed different materials with different calorific values.

[0043] The radioactive waste calcining device 100 provided by the present invention realizes zoned feeding by setting multiple feed openings 12 and combining multiple groups of feed components 20, and introduces materials with different calorific values ​​into the calcining chamber of the calcining furnace 10 in zones. It can more reasonably utilize the temperatures of different zones in the calcining furnace 10, thereby matching different temperature zones in the calcining furnace 10 according to materials with different calorific values, thereby improving the heat utilization rate in the calcining furnace 10.

[0044] It should be noted that, in addition to matching different materials to different temperature zones of the calcining furnace 10 according to their different calorific values, the materials can also be matched to different temperature zones in combination with other physical and chemical properties such as the morphology, moisture content, and radioactivity concentration, which are not limited here. It should also be noted that the calcining furnace 10 is cylindrical and the lining of the calcining furnace 10 is a refractory material.

[0045] Please continue reading Figure 1In some embodiments, the axial direction of the calcining furnace 10 is defined as the rotation axis, and the calcining furnace 10 is configured to rotate along the rotation axis. In this way, the material in the calcining chamber can be turned over by the rotatable calcining furnace 10, so as to ensure that the material can be fully burned. Specifically, the calcining furnace 10 is connected to the first driving member in a transmission manner, and the first driving member is used to drive the calcining furnace 10 to rotate. In this way, the rotation speed of the calcining furnace 10 can be more accurately controlled by the first driving member, and debugging is convenient. Optionally, the first driving member includes a driving motor.

[0046] Specific to Figure 1 In the example of the embodiment of the present invention, the calcining furnace 10 includes two feed openings 12 connected to the calcining chamber, and the two feed openings 12 are arranged at two ends of the calcining furnace 10 at intervals along the axial direction of the calcining furnace 10. In this way, through the two feed openings 12 arranged at two ends of the calcining chamber, on the one hand, it is easy to arrange multiple groups of feed assemblies 20, so that multiple groups of feed assemblies 20 can introduce corresponding materials into the calcining chamber where the required temperature range is located. On the other hand, when the feed assembly 20 extends into the calcining chamber from the feed opening 12, it will not interfere with the rotation of the calcining furnace 10.

[0047] In order to further improve the utilization rate of heat in the furnace, Figure 1 As shown, in some embodiments, multiple combustion sections are arranged in sequence along the axial direction of the calcining furnace 10. Among them, the combustion temperature intervals of the multiple combustion sections at least partially do not overlap. In this way, the temperature intervals in the calcining furnace 10 can be different through the non-overlapping combustion temperature intervals, so that it can be distinguished according to the temperature intervals. It should be noted that the upper limits of the temperature intervals of the multiple combustion sections gradually increase from the two ends of the axial direction of the calcining furnace 10 to the middle.

[0048] Specifically, the calcining chamber has three combustion sections arranged along the axial direction of the calcining furnace 10. The three combustion sections are defined as the first combustion section 111, the second combustion section 112 and the third combustion section 113. Among them, the upper limit critical value of the combustion temperature range of the first combustion section 111 and the upper limit critical value of the combustion temperature range of the third combustion section 113 are both smaller than the upper limit critical value of the combustion temperature range of the second combustion section 112. In this way, the calcining furnace 10 is segmented according to the different temperature ranges in the calcining furnace 10. When different materials are put into the calcining furnace 10, they can be put into the combustion section corresponding to the appropriate combustion temperature range according to the calorific value of the material itself, effectively utilizing the coordination degree between the radioactive waste calcining device 100 and the material, and reducing the loss of external heating energy. In addition, the introduction of materials with different calorific values ​​in different areas can also avoid problems such as easy blockage and coking when feeding uniformly.

[0049] It should be noted that, when the calcining furnace 10 is heated, heating devices such as the heater 80 and the thermocouple 85 shown later are often arranged in the middle of the calcining furnace 10. Therefore, the upper limit critical value of the temperature range of the second combustion section 112 located in the middle is higher. Therefore, introducing materials with lower calorific value into the second combustion section 112 with a higher upper limit of the temperature range can further improve the utilization rate of heat.

[0050] Please combine Figure 1 and Figure 2 As shown, in some embodiments, the feed assembly 20 includes three groups, and the three groups of feed assemblies 20 are respectively used to feed materials into the first combustion section 111, the second combustion section 112 and the third combustion section 113. Common radioactive wastes in nuclear facilities include waste resin, concentrate and sludge. Among them, the waste resin has a high calorific value. Therefore, one group of feed assemblies 20 introduces the waste resin into the first combustion section 111, so as to use the high heat generated by the combustion of the waste resin to insulate the inside of the calcining chamber of the calcining furnace 10, thereby reducing the input of external heating energy.

[0051] The calorific value of the sludge slurry is lower and its water content is higher than that of the waste resin. Therefore, another set of feeding components 20 introduces the sludge slurry into the second combustion section 112, which can utilize the heat of the combustion of the waste resin in the first combustion section 111 and the higher temperature range of the second combustion section 112 to enable the sludge slurry to be quickly gasified and burned, thereby reducing coking and blockage.

[0052] The concentrated liquid has the highest water content and requires a lower temperature for gasification. Therefore, another set of feed components 20 introduces the concentrated liquid into the third combustion stage 113, which can effectively prevent the organic components in the waste liquid from being in contact with the organic components in other materials for too long, causing chemical reactions and local coking.

[0053] As specific as Figure 1 As shown, a discharge port 13 is provided on the third combustion section 113. Usually, the third combustion section 113 is used as the discharge section of the calcining furnace 10, that is, the rear section of the calcining furnace 10, so that the material is discharged through the discharge port 13 to avoid the concentrated liquid from being in contact with the materials in the first combustion section 111 and the second combustion section 112 for a long time and chemical reaction. Furthermore, the radioactive waste calcining device 100 also includes a material receiving box 70. The material receiving box 70 is connected to the discharge port 13, and the material can be discharged from the calcining chamber through the discharge port 13 to the material receiving box 70.

[0054] Please continue reading Figure 1In some embodiments, the radioactive waste calcining device 100 includes a heater 80 and a thermocouple 85 that is communicatively connected to the heater 80. The thermocouple 85 and the heater 80 are respectively installed on the calcining furnace 10. The heater 80 is used to heat the calcining furnace 10, and the thermocouple 85 is used to detect the temperature information of the calcining furnace 10. In this way, the electric heating method of the heater 80 and the thermocouple 85 can be easy to operate, and has high safety and is easy to control. Specifically, the heater 80 and the thermocouple 85 can heat the calcining furnace 10 to above 1100 degrees.

[0055] Please combine Figure 1 and Figure 2 As shown, further, the feed assembly 20 includes a material storage member 21 and a feed pipe 22 connected to the material storage member 21. The feed pipe 22 at least partially extends into the feed opening 12, and the feed pipe 22 is used to feed the material into the calcining chamber. In this way, the material can be easily stored through the material storage member 21, and the feed pipe 22 can more easily guide the material. Figure 1 As shown in , the storage member 21 may be a silo 21a for storing materials such as waste resin and sludge. The storage member 21 may also be a liquid preparation bottle 21b for storing materials such as concentrated liquid. Furthermore, the feed assembly 20 further includes a feeder 23 connected between the storage member 21 and the feed pipe 22, and the feeder 23 is used to transfer the material from the storage member 21 to the feed pipe 22 in a preset amount. In this way, the material can be transferred more accurately through the feeder 23, thereby improving the controllability of the entire calcination process.

[0056] As attached Figure 1 As shown in , the feeding member 23 may be a screw feeder 23a, which is used to transfer materials such as waste resin, sludge slurry, etc. In this way, the screw feeder 23a can ensure uniform and stable feeding. The feeding member 23 may also be a peristaltic pump 23b, which is used to transfer materials such as concentrated liquid. In this way, the flow stability of the liquid can be improved by the peristaltic pump 23b. In addition, the flow rate and flow rate of the concentrated liquid are controlled by the peristaltic pump 23b, and the concentrated liquid can be directly sprayed into the third combustion section 113, which can not only accelerate the evaporation process, but also can play a role in heat transfer and turning over other materials in the calcining chamber, such as waste resin, sludge slurry, etc., thereby accelerating the combustion process in the calcining furnace 10.

[0057] Furthermore, the feeding assembly 20 further includes a second driving member, which is connected to the feeding member 23 for driving the feeding member 23 to feed. In this way, the amount of material transmitted from the feeding member 23 to the feeding pipe 22 can be more accurately controlled by the second driving member, so that feeding on demand is achieved and debugging is convenient. Optionally, the second driving member includes a driving motor.

[0058] Please refer again Figure 1In some embodiments, the radioactive waste calcining device 100 further includes heat-insulating cotton 90. The heat-insulating cotton 90 is disposed around the circumference of the calcining furnace 10. In this way, the calcining furnace 10 can be insulated by the heat-insulating cotton 90, thereby preventing the calcining furnace 10 from losing temperature, thereby improving the heat utilization efficiency of the calcining furnace 10.

[0059] like Figure 1 As shown, in some embodiments, the radioactive waste calcining device 100 further includes an air inlet duct 30, and the air inlet duct 30 at least partially extends into the calcining chamber. In this way, the gas can be introduced into the calcining chamber through the air inlet duct 30, so that the combustion in the calcining chamber is more thorough. Specifically, the air inlet duct 30 is used to be connected to an external gas device. Optionally, the external gas device is an oxygen compressed gas cylinder.

[0060] Specifically, in some embodiments, one end of the air inlet duct 30 is located in the second combustion section 112, and the other end extends from the first combustion section 111 or the third combustion section 113. In this way, by extending one end of the air inlet duct 30 into the second combustion section 112, the gas can fully enter the calcination chamber, and the second combustion chamber in some existing radioactive waste calcination devices is omitted, ensuring that the first combustion section 111, the second combustion section 112 and the third combustion section 113 can all meet the demand for oxygen supply, so that the organic components can be burned in a timely and sufficient manner. Figure 1 In the illustrated embodiment, the air inlet duct 30 extends from the first combustion section 111 .

[0061] Figure 3 FIG. 4 is a schematic structural diagram of a box body 40 in an embodiment of the present invention.

[0062] See also Figure 3 , and combined with Figure 1 In some embodiments, the radioactive waste calcining device 100 further includes a box 40. The box 40 has a accommodating cavity 41, and the calcining furnace 10 is accommodated in the accommodating cavity 41. In this way, the calcining furnace 10 is accommodated in the accommodating cavity 41 by the box 40, so that the calcining furnace 10 can be better protected and the sealing effect of the radioactive waste calcining device 100 can be improved. Specifically, in some embodiments, the box 40 is configured as a negative pressure box 40. Since the calcining furnace 10 and the feeding assembly 20 are both aimed at the calcination of radioactive waste during their operation, by configuring the box 40 as a negative pressure box 40, the outflow of radioactive waste can be further avoided, thereby ensuring that the equipment is safer and more reliable during operation.

[0063] Please continue to read Figure 1 and Figure 3Furthermore, the radioactive waste calcining device 100 further includes a moving wheel 95. The moving wheel 95 is disposed on a side of the box body 40 away from the calcining furnace 10. In this way, the box body 40 can be more conveniently moved to a preset position by the moving wheel 95. Specifically, the moving wheel 95 includes a plurality of moving wheels 95, and the plurality of moving wheels 95 are spaced apart from each other at the bottom of the box body 40. In this way, it can be ensured that the moving wheel 95 stably supports the box body 40.

[0064] It should be noted that the calciner 10 in the present application is configured to seal the calciner 10 to prevent the outflow of radioactive waste. Specifically, the sealing performance of the calciner 10 reaches 6×10 -6 PL / S. Optionally, the calcining furnace 10 is a stainless steel sealed calcining furnace 10. In this way, the double insurance design of the sealed calcining furnace 10 and the negative pressure box 40 can avoid the device airtightness not meeting the requirements due to multi-stage partition feeding and more openings, thereby avoiding the outflow of radioactive substances and ensuring the safe and smooth operation of the equipment.

[0065] See also Figure 1 In some embodiments, the radioactive waste calcining device 100 further includes an adjustment seat 50. The adjustment seat is disposed on a side of the calcining furnace 10 away from the feed assembly 20 to adjust the calcining furnace 10 within a preset angle range. In this way, the angle of the calcining furnace 10 is adjustable. On the one hand, it can ensure that the material in the calcining furnace 10 is discharged more smoothly. On the other hand, it can ensure that after the material enters the calcining chamber from different partitions, it can flow smoothly in the calcining furnace 10, avoiding the accumulation and blockage of the material, or even the phenomenon of local overheating and coking.

[0066] like Figure 1 As shown, specifically in some embodiments, the preset angle range includes 0 degrees-5 degrees. The inventors have found that when the inclination angle of the calcining furnace 10 exceeds 5 degrees, its inclination angle is too large. On the one hand, when the material is discharged, its dumping speed is too fast, which is prone to danger. On the other hand, the material flows faster in the calcining chamber and is easy to accumulate at the end of the calcining furnace 10. It can be understood that the preset angle range includes, but is not limited to, 0 degrees, 1 degree, 2 degrees, 3 degrees, 4 degrees or 5 degrees. Of course, in some other embodiments, the inclination angle of the calcining furnace 10 can be adaptively adjusted according to its actual needs, and is not limited here.

[0067] Please continue reading Figure 1 or Figure 2In some embodiments, the adjustment seat 50 includes a base 51 and an adjustment member 52. The calcining furnace 10 is installed on the base 51, one end of the adjustment member 52 is operably connected to the base 51 / box 40, and the other end of the adjustment member 52 is fixedly connected to the box 40 / base 51. In this way, the inclination angle of the calcining furnace 10 can be adjusted by adjusting the adjustment member 52. Further, the adjustment seat 50 also includes a roller 53, and the roller 53 is movably connected to the adjustment member 52. In this way, the angle of the base 51 is adjusted by rotating the roller 53 to adjust the adjustment member 52. In an embodiment of the present application, the adjustment member 52 includes a screw. Optionally, the adjustment member 52 is connected to the third driving member in a transmission manner, and the third driving member is used to drive the adjustment member 52 to adjust the inclination angle of the calcining furnace 10. In this way, the inclination angle of the calcining furnace 10 can be adjusted more accurately by the third driving member, and it is easy to debug. Optionally, the third driving member is a driving motor. Of course, the adjusting member 52 can also be adjusted manually, which is not limited here.

[0068] Furthermore, if Figure 2 As shown, there are multiple adjusting members 52, and the multiple adjusting members 52 are arranged between the machine base 51 and the box body 40 at intervals along the radial direction of the calcining furnace 10. In this way, the support stability of the machine base 51 and the calcining furnace 10 installed on the machine base 51 can be improved. In some embodiments, the multiple adjusting members 52 are arranged between the machine base 51 and the box body 40 at intervals along the axial direction of the calcining furnace 10. In this way, the inclination angle of the machine base 51 and the calcining furnace 10 installed on the machine base 51 can be adjusted according to needs. Specifically, Figure 1 In the embodiment shown, in combination with some of the above embodiments, two adjusting members 52 are provided at one end of the base 51 close to the third combustion section 113 of the calcining furnace 10. In this way, the calcining furnace 10 can be easily discharged from the discharge port 13 of the third combustion section 113 after adjustment.

[0069] Please refer again Figure 1 In some embodiments, the radioactive waste calcining device 100 further includes a cooling pipe 60. The cooling pipe 60 is installed on the outer wall of the calcining furnace 10, and a coolant can be passed into the cooling pipe 60 to cool the calcining furnace 10. In this way, the calcining furnace 10 can be cooled more efficiently in a shorter time through the cooling pipe 60. Specifically in some embodiments, the cooling pipe 60 is arranged around the circumference of the calcining furnace 10. More specifically, the cooling pipe 60 includes a plurality of cooling pipes 60, and the plurality of cooling pipes 60 are arranged at intervals from each other along the axial direction of the calcining furnace 10. Specifically as Figure 1 In the illustrated embodiment, there are two cooling pipes 60, which are respectively disposed at two ends of the calcining furnace 10. In this way, the calcining furnace 10 can be cooled more quickly.

[0070] like Figure 3As shown, in some embodiments, the radioactive waste calcining device 100 also includes a control module and a display module 42 that is communicatively connected to the control module. In combination with some of the aforementioned embodiments, the control module is communicatively connected to the heater 80, the thermocouple 85, the first drive member, the second drive member, and the third drive member. The thermocouple 85 is used to obtain the temperature information of the calcining furnace 10 and transmit it to the control module. The control module is used to control the heater 80 to heat to a preset temperature based on the temperature information. The control module is also used to control the display module 42 to display the temperature information based on the temperature information. Optionally, the display module 42 is a liquid crystal display. Further, the display module 42 is arranged on the surface of the box 40. Furthermore, a USB interface 43 is provided on the box 40 for exporting report data.

[0071] In some embodiments, the control module is further used to control the first driving member to drive the calcining furnace 10 to rotate at a preset speed. The control module is also used to control the display module 42 to display the speed information based on the preset speed. The control module is also used to control the second driving member to drive the feeding member 23 to feed with preset feeding information. The control module is also used to control the display module 42 to display the feeding information based on the preset feeding information. The control module is also used to control the third driving member to drive the adjusting member 52 to adjust the calcining furnace 10 at a preset angle. The control module is also used to control the display module 42 to display the angle information based on the preset angle.

[0072] The radioactive waste calcining device 100 provided in the embodiment of the present application feeds in different zones through multiple groups of feeding components 20. According to the calorific value of different materials, different temperature zones in the calcining furnace 10 are reasonably utilized, the matching degree between the radioactive waste calcining device 100 and the materials is effectively utilized, and the heat utilization rate in the calcining furnace 10 is improved. Moreover, the method of feeding in different zones avoids the problem of blockage and coking of materials when feeding in a unified manner. Moreover, the double insurance design of the sealed calcining furnace 10 and the negative pressure box 40 can avoid the problem of poor air tightness caused by multi-stage zone feeding, and avoid the outflow of radioactive materials. The adjustment seat 50 can adjust the inclination angle of the calcining furnace 10 according to different requirements under different working conditions, so as to ensure the smooth flow of materials. In the second combustion section 112, oxygen is introduced through the air inlet duct 30, which can ensure the complete combustion of radioactive waste while avoiding temperature loss.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A radioactive waste calcination device, characterized in that: include: A calcining furnace comprises a calcining chamber and a feed opening communicating with the calcining chamber; the calcining chamber has a plurality of combustion sections; as well as A plurality of groups of feed assemblies, each group of the feed assemblies at least partially extending into the feed opening, the feed assemblies being used to feed materials into a corresponding one of the combustion sections in the calcining chamber, the combustion temperature ranges of the plurality of combustion sections being different; Among them, each group of the feeding components is used to feed different materials with different calorific values; the multiple combustion sections are arranged in sequence along the axial direction of the calcining furnace; the combustion temperature ranges of the multiple combustion sections are at least partially non-overlapping, and the upper limits of the combustion temperature ranges of the multiple combustion sections gradually increase from the two ends of the axial direction of the calcining furnace to the middle.

2. The radioactive waste calcination device according to claim 1, characterized in that: The calcining chamber has three combustion sections arranged along the axis direction of the calcining furnace; the three combustion sections are respectively defined as a first combustion section, a second combustion section and a third combustion section; Among them, the upper limit critical value of the combustion temperature range of the first combustion section and the upper limit critical value of the combustion temperature range of the third combustion section are both smaller than the upper limit critical value of the combustion temperature range of the second combustion section.

3. The radioactive waste calcination device according to claim 2, characterized in that: The radioactive waste calcining device also includes an air inlet duct, and the air inlet duct at least partially extends into the calcining chamber.

4. The radioactive waste calcination device according to claim 3, characterized in that: One end of the air inlet duct is located in the second combustion section, and the other end extends from the first combustion section or the third combustion section.

5. The radioactive waste calcination device according to any one of claims 1 to 4, characterized in that: The feed assembly comprises a material storage member and a feed pipe connected to the material storage member; The feed pipe at least partially extends into the feed opening, and the feed pipe is used to feed the material into the calcining chamber.

6. The radioactive waste calcination device according to any one of claims 1 to 4, characterized in that: The radioactive waste calcining device also includes a box body, and the box body has a containing cavity; The calcining furnace is accommodated in the accommodating cavity.

7. The radioactive waste calcination device according to claim 6, characterized in that: The box is configured as a negative pressure box.

8. The radioactive waste calcination device according to any one of claims 1 to 4, characterized in that: The radioactive waste calcining device also includes an adjustment seat; The adjustment seat is arranged on a side of the calcining furnace away from the feeding assembly to adjust the calcining furnace within a preset angle range.

9. The radioactive waste calcination device according to claim 8, characterized in that: The preset angle range includes 0 degrees to 5 degrees.

10. The radioactive waste calcining device according to any one of claims 1 to 4, characterized in that: The radioactive waste calcining device further comprises a cooling pipe, wherein the cooling pipe is installed on the outer wall of the calcining furnace; The cooling pipe is used to pass cooling liquid to cool the calcining furnace.

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