CN217640681U

CN217640681U - Radioactive waste treatment system

Info

Publication number: CN217640681U
Application number: CN202220650072.0U
Authority: CN
Inventors: 李时瑛; 李程鑫; 杨明辉; 程建军; 李建宇; 李晴; 李利; 刘夏杰; 陆杰; 张子炜; 杨武; 杨光成; 任雅青
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-10-21
Anticipated expiration: 2032-03-23

Abstract

The utility model relates to a radioactive waste treatment system, which comprises a secondary combustion module, a melting module, an emergency slag receiving module and a moving module; the secondary combustion module is connected with an external incineration device for incinerating the radioactive wastes, the incineration device is obliquely arranged, and a support piece is arranged at the bottom of the incineration device so that waste residues in the incineration device fall into the secondary combustion module; the melting module and the emergency slag receiving module are respectively fixed on the movable module, and the secondary combustion module is driven by the movable module to be in butt joint with the melting module or the emergency slag receiving module. The utility model discloses the utilization is applicable in most of low and medium radioactive solid waste handles, adopts the stability of the nimble mode reinforcing system of arranging, guarantees radioactive waste treatment system and realizes continuous steady operation, also can realize in time overhauing simultaneously.

Description

Radioactive waste treatment system

Technical Field

The utility model relates to a waste treatment technical field especially relates to a radioactive waste treatment system.

Background

In recent years, the construction of nuclear power plants gradually enters express ways, and the huge pressure of energy shortage in east economically developed areas is effectively relieved. Nuclear power plants, however, produce a certain amount of waste while providing clean energy. With the increase of the years, the amount of waste discharge and storage in nuclear power stations is becoming huge, and the problem to be solved is now urgent. At present, the annual output of the medium and low-level radioactive wastes of the nuclear power station in China is about 20000m ³ Mainly comprises waste metal, waste resin, waste glass fiber, paper products, cotton products, plastic cloth, waste wood and the like. It is estimated that the amount of these wastes has reached 30000m by 2020 ³ . With the national ministry of minimization and volume reduction policy of radioactive waste in the thirteen-five program of nuclear safety and radioactive pollution control and the distant view target of 2025, the volume reduction and stabilization treatment of radioactive waste is in the forefront and is the focus of public attention.

The pyrolysis incineration technology in the prior art still has more secondary waste after the radioactive solid waste is treated, if produce low activity radioactive ash sediment, and heat utilization efficiency is not high moreover, has the extravagant problem of energy.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a volume reduction is effectual, the security is high, the little radioactive waste processing system of energy consumption.

The utility model provides a technical scheme that its technical problem adopted is: constructing a radioactive waste treatment system, which comprises a secondary combustion module, a melting module, an emergency slag receiving module and a moving module;

the secondary combustion module is connected with an external incineration device for incinerating the radioactive waste, the incineration device is obliquely arranged, and a support piece is arranged at the bottom of the incineration device so that waste residues in the incineration device fall into the secondary combustion module;

the melting module and the emergency slag receiving module are respectively fixed on the movable module, and the secondary combustion module is driven by the movable module to be in butt joint with the melting module or the emergency slag receiving module.

Preferably, the secondary combustion module comprises a secondary combustion chamber; the two-combustion chamber is provided with at least one feed inlet, a two-combustion chamber exhaust port for discharging waste gas generated in the incineration process is arranged on the side wall of the top of the two-combustion chamber, a two-combustion chamber ash hopper and a two-combustion chamber slag outlet for discharging waste residues are sequentially arranged at the bottom of the two-combustion chamber, and the waste residues pass through the two-combustion chamber ash hopper and are discharged from the two-combustion chamber slag outlet.

Preferably, the secondary combustion module is including setting up the first feed inlet of second combustion chamber ash bucket lateral wall with the second combustion chamber top is equipped with the second feed inlet that is used for puting in the waste residue of burning.

Preferably, the secondary combustion module further comprises an air supplement assembly and an auxiliary burner which are used for matching with the secondary combustion of the waste gas, and the air supplement assembly is arranged between the secondary combustion chamber and the ash bucket of the secondary combustion chamber; the auxiliary burner is arranged on the side wall of the ash bucket of the secondary combustion chamber in a penetrating way.

Preferably, the melting module comprises a melting furnace fixed to the moving module; the melting furnace top is equipped with the melting that is used for receiving the waste residue and connects the cinder notch, be equipped with independent feed inlet on the melting furnace top lateral wall, still be equipped with heating element and overflow mouth on the melting furnace.

Preferably, the heating assembly comprises a main heating element for supplying heat in the furnace and an auxiliary heating element for keeping warm; the main heating element is arranged on the side wall of the melting furnace in a penetrating mode, and the auxiliary heating element is arranged on the top wall of the melting furnace opposite to the overflow port in a penetrating mode.

Preferably, the emergent sediment module that connects includes that the emergency connects sediment cooling module, the emergency connects sediment cooling module to fix on the mobile module, the emergency connects sediment cooling module top to be equipped with the emergent sediment mouth that connects, the emergency connects sediment cooling module one end to be connected with sediment piece hoisting component, be equipped with emergent slag notch on the sediment piece hoisting component.

Preferably, the mobile module comprises a base and a mobile wheel assembly, the mobile wheel assembly is arranged at the bottom of the base, the melting module and the emergency slag receiving module are respectively arranged on the base, and the base is driven by the mobile wheel assembly to enable one of the slag outlet of the secondary combustion chamber to be in butt joint with the melting module or the emergency slag receiving module.

Preferably, the mobile module further comprises a hydraulic jacking assembly, the hydraulic jacking assembly is arranged at the bottom of the base, and the melting module or the emergency slag receiving module is sealed with the slag outlet of the secondary combustion chamber through the hydraulic jacking assembly.

Preferably, the radioactive waste treatment system further comprises a control module, the control module being communicatively coupled to the mobile module.

Implement the utility model discloses following beneficial effect has: the utility model discloses the utilization is applicable in most of low and medium radioactive solid waste handles, adopts the stability of the nimble mode reinforcing system of arranging, guarantees radioactive waste treatment system and realizes continuous steady operation, also can realize in time overhauing simultaneously.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of the radioactive waste treatment system of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

As shown in fig. 1, the radioactive waste treatment system of the present invention comprises a secondary combustion module 1, a melting module 2, an emergency slag receiving module 3 and a mobile module 4;

the secondary combustion module 1 is connected with an external incineration device 5 for incinerating radioactive wastes, the incineration device 5 is obliquely arranged, a plurality of supporting pieces 51 are arranged at the bottom of the incineration device 5, the heights of the supporting pieces 51 can be different, the arrangement height of each supporting piece 51 is gradually increased from one end close to a slag discharge port of the incineration device 5 to the other end, wherein radioactive solid wastes are fully incinerated and volume is reduced in the incineration device 5, and high-temperature ash residues obtained after incineration automatically fall into the secondary combustion module 1 under the action of gravity;

the melting module 2 and the emergency slag receiving module 3 are respectively fixed on the movable module 4, the secondary combustion module 1 is driven by the movable module 4, and one of the melting module 2 and the emergency slag receiving module 3 is selected to be connected with each other.

Further, the secondary combustion module 1 comprises a secondary combustion chamber 11; the secondary combustion chamber 11 is provided with at least one feeding hole, the side wall of the top of the secondary combustion chamber 11 is provided with a secondary combustion chamber exhaust port 12 for discharging waste gas generated in the incineration process, and flue gas generated by the incineration device 5 and the melting module 2 can be connected into a flue gas treatment system at the outer end through a pipeline of the secondary combustion chamber exhaust port 12 and is discharged after reaching the standard after being treated; the bottom of the secondary combustion chamber 11 is sequentially provided with a secondary combustion chamber ash hopper 13 and a secondary combustion chamber slag outlet 14 for discharging waste slag, and the waste slag is discharged from the secondary combustion chamber slag outlet 14 through the secondary combustion chamber ash hopper 13.

Specifically, can be provided with two feed inlets on the second combustion chamber 11, include that first feed inlet 15 and second combustion chamber 11 top at second combustion chamber ash bucket 13 lateral wall are equipped with the second feed inlet 16 that is used for puting in the incineration waste residue, and first feed inlet 15 directly receives the row's cinder notch exhaust waste residue of incineration device 5, and second feed inlet 16 can be arranged in throwing into second combustion chamber 11 with the waste residue of retrieving temporarily in this feed inlet, and the waste residue directly falls into melting module 2 after 11 passageway high temperature preheats in the second combustion chamber and carries out the postcombustion.

Further, the secondary combustion module 1 further comprises an air supplement component 17 and an auxiliary burner 18 which are used for matching with the secondary combustion of the waste gas, the air supplement component 17 is arranged between the secondary combustion chamber 11 and the secondary combustion chamber ash bucket 13, the auxiliary burner 18 penetrates through the side wall of the secondary combustion chamber ash bucket 13, the secondary combustion is carried out by matching the flue gas generated by the incineration device 5 and the melting module 2 with the air supplement component 17 of the secondary combustion module 1, the auxiliary burner 18 is started to heat up when the temperature of the flue gas is lower than 1100 ℃, and the gas in the secondary combustion chamber 11 is fully combusted.

Further, the melting module 2 includes a melting furnace 21, and the melting furnace 21 is fixed on the moving module 4; the melting furnace 21 top is equipped with the melting that is used for receiving the waste residue and connects slag notch 22, is equipped with the independent feed inlet 23 that is used for adding the melting batching on the melting furnace 21 top lateral wall, still is equipped with heating element and overflow mouth 24 on the melting furnace 21, and the melting batching is mixed with the waste residue in the melting furnace 21 through independent feed inlet 23 to heat the melting through heating element, and the solidification material that obtains after the melting flows through overflow mouth 24.

Further, the heating assembly includes a main heating member 25 for supplying heat in the furnace and an auxiliary heating member 26 for keeping warm; the main heating element 25 penetrates through the side wall of the melting furnace 21 to supply heat to the furnace so as to quickly melt materials, the auxiliary heating element 26 penetrates through the top wall of the melting furnace 21 opposite to the overflow port 24 to preserve heat of the discharging section, so that the melt is maintained in a liquid state and flows out from the overflow port 24, and carbon residue in waste residues can be further eliminated.

Further, it connects sediment cooling module 31 including meeting an urgent need to meet sediment module 3, meet an urgent need sediment cooling module 31 to fix on mobile module 4 to meet an urgent need, meet an urgent need sediment cooling module 31 top and be equipped with the emergent sediment mouth 32 that connects that is used for receiving the waste residue temporarily, meet an urgent need sediment cooling module 31 one end and be connected with sediment piece promotion subassembly 33, be equipped with on the sediment piece promotion subassembly 33 and meet an urgent need sediment mouth 32, from meeting an urgent need the waste residue that sediment mouth 32 connects in operation in sediment piece promotion subassembly 33, simultaneously by meeting an urgent need the cooling liquid that connects among the sediment cooling module 31, then from meeting an urgent need the slag mouth 34 that connects the sediment module fall into and receive temporarily in the shielding bucket and carry out emergent deposit, wherein, the coolant liquid can be the running water, the vapor of evaporation discharges through secondary combustion module 1.

Further, the moving module 4 comprises a base 41 and a moving wheel assembly 42, the moving wheel assembly 42 is arranged at the bottom of the base 41, the melting module 2 and the emergency slag receiving module 3 are respectively arranged on the base 41, and the base 41 can be moved by the moving wheel assembly 42 to enable the melting module 2 or the emergency slag receiving module 3 to be in butt joint with the second combustion chamber slag outlet 14. Specifically, the moving wheel assembly 42 may include four moving wheels, and it is understood that the moving wheels are provided for the purpose of rapidly moving the melting module 2 and the slag receiving module 3, which are provided on the base 41, so as to selectively couple the two-chamber slag outlet 14, and thus the number of the moving wheels may be adjusted according to actual conditions, and is not limited thereto.

Further, the moving module 4 further comprises a hydraulic jacking assembly 43, the hydraulic jacking assembly 43 is arranged at the bottom of the base 41, and the melting module 2 or the emergency slag receiving module 3 is sealed with the second combustion chamber slag outlet 14 through the hydraulic jacking assembly 43.

Further, the radioactive waste treatment system further comprises a control module 6, and the control module 6 is in communication connection with the mobile module 4. The control module 6 can control the moving wheel assembly 42 in the moving module 4 to make the second combustion chamber slag outlet 14 effectively align with the melting slag receiving opening 22 of the melting module 2 or the emergency slag receiving opening 32 of the emergency slag receiving module 3, and then the hydraulic jacking assembly 43 is used to lift the base 41 to make the second combustion chamber slag outlet 14 tightly connected with the melting slag receiving opening 22 or make the second combustion chamber slag outlet 14 tightly connected with the emergency slag receiving module 3.

The utility model discloses a working process as follows:

when the melting module 2 works normally, the slag outlet of the secondary combustion module 1 is connected with the melting module 2 by controlling the moving module 4, so that the waste residue and the melting formula are further heated and melted, and the solidification of harmful substances such as heavy metals, radioactive nuclides and the like in the waste residue is completed; in the melting process, the melt discharged by overflow is discharged into a butted glass body receiving container, and is transferred to a heat-preservation annealing station for heat preservation, annealing and slow cooling to form a glass solidified body with uniform texture, and the flue gas generated in the melting process enters a secondary combustion module 1;

when the melting module 2 needs to be overhauled, cutting off water and electricity of the melting module 2, simultaneously stopping feeding of the incineration device 5 for a period of time, after no slag at a slag discharge port of the incineration device 5 falls down, remotely operating the mobile module 4 through the control module 6 to connect the slag discharge port of the secondary combustion module 1 with the emergency slag receiving module 3, cooling the waste slag, enabling the cooled waste slag to fall into the temporary receiving shielding barrel, and enabling evaporated steam to enter the secondary combustion module 1;

after the melting module 2 is overhauled, stopping feeding the incineration device 5 for a period of time, cutting off water and electricity of the emergency slag receiving module 3 when no ash and slag fall from a slag outlet of the incineration device 5 and no new slag is discharged from the emergency slag receiving module 3, simultaneously moving the emergency slag receiving module 3 through the moving module 4 to drive the melting slag receiving port 22 to be connected into a slag outlet 14 of the secondary combustion chamber, and then recovering feeding of the incineration device 5; the slag blocks in the temporary receiving shielding barrel can be directly fed into a second feeding hole 16 at the top of the second combustion chamber 11, and directly fall into the melting module 2 for melting after being preheated by a channel of the second combustion chamber 11, so that the energy loss is effectively reduced; and the residual waste liquid in the cooling assembly of the emergency slag receiving module 3 is connected into an external waste liquid treatment system and is discharged after being treated to reach the standard.

The utility model discloses utilize three intercommunication design modes to burn and two kinds of technical combination of melting, its purpose provides an integrated form melting processing apparatus that is arranged in low radioactive solid waste gasification to burn facility, generally is suitable for various combustible and incombustible wastes material to put solid waste in low, including cotton fabric, plastics, glass fibre, rock wool etc. put the volume reduction effect of wastes material in improving low, reduces the volume and compares and can reach 20, effectively realizes wastes material minimizing and innoxious, connects the nimble switching design of sediment device through melting furnace and emergency simultaneously, maintains the continuous steady operation of processing system.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The radioactive waste treatment system is characterized by comprising a secondary combustion module (1), a melting module (2), an emergency slag receiving module (3) and a moving module (4);

the secondary combustion module (1) is connected with an external incineration device (5) for incinerating the radioactive wastes, the incineration device (5) is obliquely arranged, and a support piece (51) is arranged at the bottom of the incineration device (5) so that waste residues in the incineration device (5) fall into the secondary combustion module (1);

the melting module (2) and the emergency slag receiving module (3) are fixed on the movable module (4) respectively, and the secondary combustion module (1) is driven by the movable module (4) to be in butt joint with the melting module (2) or the emergency slag receiving module (3) in an alternative mode.

2. The radioactive waste treatment system according to claim 1, wherein the secondary combustion module (1) comprises a secondary combustion chamber (11);

be equipped with at least one feed inlet on second combustion chamber (11), be equipped with second combustion chamber gas vent (12) that are used for discharging the waste gas that the incineration process produced on second combustion chamber (11) top lateral wall, second combustion chamber (11) bottom is equipped with second combustion chamber ash bucket (13) in proper order and is used for discharging second combustion chamber slag notch (14) of waste residue, the waste residue warp second combustion chamber ash bucket (13) are followed second combustion chamber slag notch (14) are discharged.

3. The radioactive waste treatment system according to claim 2, wherein the secondary combustion module (1) includes a first feed opening (15) provided in a side wall of the secondary combustion chamber ash hopper (13) and a second feed opening (16) provided at a top end of the secondary combustion chamber (11) for feeding incineration waste.

4. The radioactive waste treatment system according to claim 3, wherein the secondary combustion module (1) further comprises an air supply assembly (17) and an auxiliary burner (18) for cooperating with the secondary combustion of the exhaust gas, the air supply assembly (17) being disposed between the secondary combustion chamber (11) and the secondary combustion chamber ash hopper (13); the auxiliary burner (18) is arranged on the side wall of the ash bucket (13) of the secondary combustion chamber in a penetrating way.

5. The radioactive waste treatment system according to claim 1, wherein the melting module (2) comprises a melting furnace (21), the melting furnace (21) being fixed to the moving module (4);

the melting furnace (21) top is equipped with and is used for receiving melting of waste residue connects slag tap (22), be equipped with independent feed inlet (23) on melting furnace (21) top lateral wall, still be equipped with heating element and overflow mouth (24) on melting furnace (21).

6. The radioactive waste treatment system according to claim 5, wherein the heating assembly includes a main heating member (25) for supplying heat in the furnace and an auxiliary heating member (26) for keeping warm; the main heating element (25) is arranged on the side wall of the melting furnace (21) in a penetrating way, and the auxiliary heating element (26) is arranged on the top wall of the melting furnace (21) opposite to the overflow opening (24) in a penetrating way.

7. The radioactive waste treatment system according to claim 1, wherein the emergency slag receiving module (3) comprises an emergency slag receiving cooling assembly (31), the emergency slag receiving cooling assembly (31) is fixed on the mobile module (4), an emergency slag receiving opening (32) is formed in the top end of the emergency slag receiving cooling assembly (31), one end of the emergency slag receiving cooling assembly (31) is connected with a slag block lifting assembly (33), and an emergency slag hole is formed in the slag block lifting assembly (33).

8. The radioactive waste treatment system according to claim 1, wherein the moving module (4) comprises a base (41) and a moving wheel assembly (42), the moving wheel assembly (42) is arranged at the bottom of the base (41), the melting module (2) and the emergency slag receiving module (3) are respectively arranged on the base (41), and the moving wheel assembly (42) drives the base (41) to enable the secondary combustion chamber slag outlet (14) to be alternatively butted with the melting module (2) or the emergency slag receiving module (3).

9. The radioactive waste treatment system according to claim 8, wherein the mobile module (4) further comprises a hydraulic jacking assembly (43), the hydraulic jacking assembly (43) being provided at the bottom of the base (41), the melting module (2) or the emergency slag receiving module (3) being sealed from the secondary combustion chamber slag outlet (14) by means of the hydraulic jacking assembly (43).

10. The radioactive waste treatment system according to claim 1, further comprising a control module (6), wherein the control module (6) is communicatively connected to the mobile module (4).