Incinerator

Abstract

The present invention discloses an incinerator, which includes a furnace, and the incinerator also includes a plurality of detachable heat exchange components, which are arranged in the incinerator and located below the furnace, and the heat exchange components transfer the heat in the incinerator to the outside of the incinerator. The incinerator can disassemble and install the heat exchange components according to the change of the calorific value of the sludge through the heat exchange components and the detachable design, and flexibly increase or decrease the heat exchange area in the incinerator, thereby improving the adaptability of the incinerator to the fluctuation of the calorific value and the moisture content of the sludge entering the furnace, improving the stability and application scope of the incinerator, reducing the energy demand for sludge drying and incineration, facilitating carbon emission reduction, and facilitating the replacement of severely worn heat exchange components.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste treatment, and in particular to an incinerator. Background Art

[0002] In recent years, with the rapid development of my country's economy and the acceleration of urbanization, the amount of urban sewage treatment and the corresponding amount of sludge generated in my country has increased rapidly. At the same time, with the development of the economy to a higher level and the continuous improvement of people's living standards, the requirements for environmental protection are getting higher and higher. The previous situation of focusing on water and neglecting sludge has been greatly changed, and the requirements for sludge treatment are increasing and valued.

[0003] The thermal treatment technology route based on sludge incineration can kill viruses, eliminate harmful organic matter, and completely reduce the amount and volume. In recent years, it has gradually become the mainstream of sludge treatment and is increasingly favored at home and abroad. At present, sludge drying and incineration is one of the mainstream forms of sludge treatment and disposal in my country.

[0004] The characteristics of sludge in urban sewage treatment plants vary. The calorific value of sludge is affected by many factors such as season, sewage source, and sewage treatment process. The calorific value fluctuates greatly. The high and low calorific values ​​of sludge in some sewage treatment plants can reach 2 times or even higher. For example, the high calorific value of sludge in a domestic sewage treatment plant is 12MJ / kg dry basis. After a few years, the calorific value of sludge increased to 16MJ / kg dry basis. Due to the heat load limit of the sludge incinerator, the sludge incineration volume needs to be reduced; for example, the high calorific value detection value range of sludge in a domestic sewage treatment plant in two years is 10-18MJ / kg dry basis, and the high and low calorific values ​​differ by 1.8 times, which will directly affect the incineration volume and the furnace temperature of the incinerator. The large fluctuations in the calorific value of sludge bring great disadvantages to the incineration processing capacity, energy consumption, and furnace temperature control of the sludge incinerator. Therefore, there is an urgent need for an incinerator that can cope with the fluctuation of sludge calorific value and has strong adaptability to sludge. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an incinerator in order to overcome the defect in the prior art that there is a lack of an incinerator that can cope with fluctuations in sludge calorific value and has strong adaptability to sludge mud quality.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] An incinerator, comprising a furnace, characterized in that:

[0008] The incinerator further comprises a plurality of detachable heat exchange components, which are arranged in the incinerator and located below the furnace, and transfer the heat in the incinerator to the outside of the incinerator.

[0009] In the present scheme, the incinerator can be used to incinerate the sludge generated by urban sewage treatment. The heat exchanger of detachable design can be disassembled and installed according to the change of sludge calorific value, and the heat exchange area in the incinerator can be flexibly increased or decreased, so as to reduce the fluctuation of the incineration treatment capacity due to the change of sludge calorific value, and improve the adaptability of incinerating sludge of different calorific values. When the sludge calorific value is reduced, the heat exchange area is reduced by disassembling a part of the heat exchanger, which can reduce the heat carried away by the water vapor of the incinerator, reduce the heat load capacity of the incinerator, and reduce the demand for external auxiliary fuel. When the sludge calorific value is increased, the heat exchange area is increased by increasing the number of heat exchangers, which can increase the heat carried away by the water vapor of the incinerator, so that the temperature in the incinerator will not be too high, coking will occur, or higher requirements will be placed on the temperature resistance level of the equipment. The present invention improves the ability of the incinerator to cope with the fluctuation of the sludge calorific value and the moisture content entering the furnace, improves the stability and application scope of the incinerator, reduces the energy demand for sludge drying and incineration, is conducive to carbon emission reduction, and is also convenient for replacing severely worn heat exchangers.

[0010] Preferably, the incinerator also includes an external water vapor circulation component, the heat exchange element is connected to the external water vapor circulation component, and circulating water for heat exchange flows between the heat exchange element and the external water vapor circulation component, and at least a part of the external water vapor circulation component is arranged outside the furnace body of the incinerator.

[0011] In this solution, the heat of the heat exchange component is conveniently transferred to the outside of the furnace through the water vapor circulation component outside the furnace and the circulating water flowing therein, so as to realize the circulation of the incineration heat in the furnace and adjust the temperature in the incinerator.

[0012] Preferably, the off-furnace water vapor circulation component includes a plurality of off-furnace pipes and a plurality of headers, the headers and at least part of the off-furnace pipes are arranged outside the furnace body, the headers and the heat exchange element are connected through the off-furnace pipes, and circulating water for heat exchange flows through the headers, the off-furnace pipes and the heat exchange element, the headers collect the circulating water and transfer the heat absorbed by the circulating water to the outside of the furnace body.

[0013] In this solution, the heat exchange components are connected to the header through an external pipe, so that the header can adjust the temperature difference of different heat exchange components by collecting cold water and heated water vapor, achieve thermal balance, prevent coking, and improve heat exchange efficiency.

[0014] Preferably, the external pipe of the furnace is connected to the heat exchange element via a threaded pipe, and a detachable flange is provided on the external pipe of the furnace.

[0015] In this solution, threaded pipe connection is a more convenient connection method to achieve detachable heat exchange components. A detachable flange is provided so that the external furnace pipeline connected to the heat exchange component is also easy to disassemble.

[0016] Preferably, a regulating valve is also provided on the external pipeline of the furnace.

[0017] In this solution, the water flow rate flowing through the header and the heat exchanger can be adjusted by adjusting the valve. Without disassembling the heat exchanger, the steam-water flow rate can also be adjusted to cope with the impact of fluctuations in the calorific value of the sludge.

[0018] Preferably, the inner wall of the furnace body is provided with a plurality of water-cooled wall pipes, the external water vapor circulation component further includes a downcomer, the header includes an upper header and a lower header, the lower header and the heat exchange element are connected through the external pipes; one end of the water-cooled wall pipe is connected to the upper header, the other end of the water-cooled wall pipe is connected to the heat exchange element, and circulating water for heat exchange circulates through the water-cooled wall pipe and the upper header and the lower header.

[0019] In this solution, by adding water-cooled wall pipes to the inner wall of the furnace body, the heat exchange efficiency in the furnace can be increased; the water-cooled wall pipes are connected to the heat exchange components to increase the circulating water circulation efficiency and make the circulating water utilization rate higher.

[0020] Preferably, the incinerator further comprises a steam drum, and the steam drum is communicated with the upper header.

[0021] In this scheme, the steam drum can collect the water vapor in the water-cooled wall pipe and supply the heat generated by the sludge incineration to the outside in the form of water vapor.

[0022] Preferably, the incinerator further comprises an in-furnace bed oxygen supply component, the in-furnace bed oxygen supply component is connected to an oxygen storage tank arranged outside the incinerator, and the in-furnace bed oxygen supply component adjusts the oxygen supply amount.

[0023] In this solution, the oxygen supply is adjusted by the oxygen supply component in the furnace bed, so that the calorific value of the treated sludge can be adjusted according to the calorific value in the furnace, thereby improving the ability to adapt to changes in the calorific value of the sludge.

[0024] Preferably, the furnace bed oxygen supply assembly includes an oxygen pipeline and a plurality of oxygen nozzles, the oxygen pipeline is connected to each of the oxygen nozzles, the oxygen pipeline is connected to the oxygen storage tank, and an oxygen regulating valve is provided between the oxygen pipeline and the oxygen storage tank.

[0025] In this scheme, by adjusting the size of the oxygen nozzle and setting the oxygen regulating valve, the oxygen supply can be adjusted according to the change of the calorific value of the sludge; when the calorific value of the sludge is low, pure oxygen can also be introduced to increase the combustion temperature.

[0026] Preferably, the heat exchange element is a water-cooled wall heat exchange buried pipe, which is buried in the incineration carrier in the incinerator and is connected to the water-cooled wall pipeline on the inner wall of the furnace. The circulating water used for heat exchange circulates between the water-cooled wall heat exchange buried pipe and the water-cooled wall pipeline, and the circulating water transfers the heat in the incinerator to the outside of the incinerator.

[0027] In this scheme, the water-cooled wall heat exchange buried tube is an effective heat exchange component for realizing heat exchange. By burying the water-cooled wall heat exchange buried tube in the combustion carrier in the furnace, effective contact is achieved, which is conducive to the water-cooled wall heat exchange buried tube to fully absorb heat and improve heat conduction efficiency.

[0028] Preferably, at least one cross-sectional profile of the water-cooled wall heat exchange buried tube protrudes outward in the diameter direction of the water-cooled wall heat exchange buried tube.

[0029] In this scheme, a structure with an outwardly protruding cross-section is adopted to increase the contact area between the water-cooled wall heat exchange buried tubes and the heat-conducting material in the furnace, thereby increasing the heat transfer effect, reducing the resistance of the incinerated sludge fluid flowing through the water-cooled wall heat exchange buried tubes, and reducing the wear of the fluidized bed on the heat exchange buried tubes.

[0030] Preferably, a manhole is provided at the bottom of the side wall of the furnace, and the manhole is used for maintenance.

[0031] In this solution, a manhole is provided at the bottom of the side wall of the furnace to facilitate maintenance.

[0032] The positive and progressive effects of the present invention are as follows: the incinerator can dismantle and install the heat exchange components according to the change of the calorific value of the sludge through the heat exchange components and the detachable design, flexibly increase or decrease the heat exchange area in the incinerator, reduce the fluctuation of the calorific value of the sludge on the incineration processing capacity, and improve the adaptability of the sludge of different calorific values; when the calorific value of the sludge is reduced, the heat exchange area is reduced by dismantling a part of the heat exchange components, which can reduce the heat carried away by the water vapor in the incinerator, reduce the heat load capacity of the incinerator, and reduce the demand for external auxiliary fuel; when the calorific value of the sludge is increased, the heat exchange area is increased by increasing the number of heat exchange components, which can increase the heat carried away by the water vapor in the incinerator, so that the temperature in the incinerator will not be too high, coking will occur, or higher requirements will be placed on the temperature resistance level of the equipment; the adaptability of the incinerator to the fluctuation of the calorific value of the sludge and the moisture content entering the furnace is improved, the stability and application scope of the incinerator are improved, the energy demand for sludge drying and incineration is reduced, which is beneficial to carbon emission reduction and convenient for replacing severely worn heat exchange components. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the incinerator in Example 1 of the present invention.

[0034] Figure 2 It is a schematic diagram of the structure of the lower header in Example 1 of the present invention.

[0035] Figure 3 for Figure 2 Section view along AA.

[0036] Figure 4 This is a schematic diagram of the structure of the water-cooled wall heat exchange buried tube in Example 2 of the present invention.

[0037] Figure 5 This is a cross-sectional view of the buried water-cooled wall heat exchange tubes in Example 2 of the present invention.

[0038] Description of reference numerals:

[0039] Bracket 1, furnace body 2, furnace chamber 3, quartz sand bed 4, water-cooled wall heat exchange buried pipe 5, threaded pipe 6, external furnace pipe 7, lower header 8, joint 9, regulating valve 10, detachable flange 11, manhole 12, ground 13, steam drum 14, oxygen pipeline 15, oxygen nozzle 16. DETAILED DESCRIPTION

[0040] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0041] Example 1

[0042] like Figure 1-3 As shown, the present invention provides an incinerator which can be used to incinerate sludge generated by urban sewage treatment, and comprises a bracket 1. The bracket 1 extends below the ground 13, which can be better fixed and increase the stability of the overall device. A furnace body 2 of the incinerator is fixedly arranged in the bracket 1, and the furnace body 2 includes a furnace chamber 3, and a quartz sand bed layer 4 is fixedly arranged horizontally below the furnace chamber 3. The quartz sand bed layer 4 is an incineration carrier in the incinerator, and the sludge to be incinerated is put onto the surface of the quartz sand and incinerated together; the incinerator also includes a plurality of heat exchange components. In the present embodiment, the heat exchange component is specifically a water-cooled wall heat exchange buried pipe 5. In other embodiments, the heat exchange component can also be other products that can effectively achieve the heat exchange effect; the water-cooled wall heat exchange buried pipe 5 is buried in the quartz sand bed layer 4 and fully contacts the quartz sand. The calorific value generated by the incinerated sludge is transferred to the water-cooled wall heat exchange buried pipe 5 in contact therewith through the quartz sand bed layer 4. Circulating water for heat exchange circulates in the water-cooled wall heat exchange buried pipe 5, and the water-cooled wall heat exchange buried pipe 5 transfers the heat in the incinerator to the outside of the incinerator through the circulating water. In other embodiments, the incineration carrier may also be other materials that can withstand high temperatures and carry the material to be incinerated; the circulating water used for heat exchange may also be replaced by other cooling media.

[0043] The incinerator also includes an external water vapor circulation component and a steam drum 14, and the inner wall of the furnace body 2 of the incinerator is also provided with a plurality of water-cooled wall pipes (not shown in the figure); in the present embodiment, the external water vapor circulation component specifically includes a plurality of external pipes 7 and a plurality of headers, and the headers include an upper header (not shown in the figure), a lower header 8 and a downcomer (not shown in the figure), the upper header 8 and the lower header 8 are both circular tubes, and the surface of the lower header 8 is provided with a plurality of joints 9 along its axial direction, wherein the external pipe 7, the upper header, the lower header 8 and the steam drum 14 are all arranged outside the furnace body 2, the upper header and the steam drum are arranged above the furnace, the lower header 8 and the external pipe 7 are arranged at the lower part of the incinerator, and the external pipe 7 respectively passes through both sides of the furnace body 2 of the incinerator.

[0044] One end of all downcomers is connected to the lower header 8 through the joint 9, and the other end of all downcomers is connected to the steam drum 14, that is, the downcomers connect the boiler and the lower header; one end of the water-cooled wall pipe is connected to the upper header, and the other end of the water-cooled wall pipe is connected to the water-cooled wall heat exchange buried pipe 5. At the same time, the water-cooled wall heat exchange buried pipe 5 and the lower header 8 are connected through the external furnace pipe 7; in this way, the water-cooled wall pipe and the water-cooled wall heat exchange buried pipe in the furnace body 2 form a connected circulation pipe with the external furnace pipe 7, the upper header, the lower header 8, the downcomers and the steam drum 14 outside the furnace body 2, and circulating water for heat exchange flows together to form a water vapor system; the lower header 8 forms a loop to the steam drum through the downcomer connected to the joint.

[0045] When the incinerator is working, colder water enters from the steam drum 14, flows through the downcomer, the lower header 8, the external furnace pipe 7 in sequence, and enters the water-cooled wall heat exchange buried pipe 5. The heated water is vaporized in the water-cooled wall pipe on the inner wall of the furnace. All or part of the vaporized steam or water vapor enters the steam drum through the upper header for collection, and flows from the steam drum to the outside of the furnace body 2 for recycling. Some of the unvaporized water and new feed water enter the lower header through the downcomer for collection and enter the circulation cycle.

[0046] By adding a water-cooled wall pipe to the inner wall of the furnace body 2, the heat exchange efficiency in the furnace can be increased; the water-cooled wall pipe is connected to the water-cooled wall heat exchange buried pipe 5 to increase the cooling water circulation efficiency and make the cooling water utilization rate higher. The water vapor generated during the heat exchange process can be collected through the steam drum 14 to prevent the water vapor from affecting the normal incineration process of the incinerator for sludge.

[0047] The water-cooled wall heat exchange buried pipes 5 are connected to the lower header 8 by using an external furnace pipe 7, so that the lower header 8 can adjust the temperature difference of different water-cooled wall heat exchange buried pipes 5 by collecting cooling water or water vapor to achieve thermal balance, prevent coking, and improve heat exchange efficiency.

[0048] The external furnace pipe 7 and the water-cooled wall heat exchange buried pipe 5 are connected through the threaded pipe 6, and a detachable flange 11 is provided on the external furnace pipe 7 located on the side outside the furnace body 2. The threaded pipe 6 connection is a more convenient connection method to achieve the detachable water-cooled wall heat exchange buried pipe 5. The detachable flange 11 is provided so that the external furnace pipe 7 connected to the water-cooled wall heat exchange buried pipe 5 is also convenient to disassemble. A sealing sleeve (not shown in the figure) is provided at the connection between the water-cooled wall heat exchange buried pipe 5 and the external furnace pipe 7. The sealing sleeve can prevent the cooling water in the water-cooled wall heat exchange buried pipe 5 from leaking out, affecting the cooling efficiency and interfering with the normal incineration process.

[0049] The water-cooled wall heat exchange buried pipe 5 adopts a detachable design, and the water-cooled wall heat exchange buried pipe 5 can be disassembled and installed according to the change of the calorific value of the sludge, so as to flexibly increase or decrease the heat exchange area in the incinerator, reduce the fluctuation of the calorific value of the sludge on the incineration processing capacity, and improve the adaptability of the sludge of different calorific values. When the calorific value of the sludge is reduced, the heat exchange area is reduced by disassembling a part of the water-cooled wall heat exchange buried pipe 5, which can reduce the heat carried away by the water vapor of the incinerator, reduce the heat load capacity of the incinerator, and reduce the demand for external auxiliary fuel. When the calorific value of the sludge is increased, the heat exchange area is increased by increasing the number of heat exchange parts, which can increase the heat carried away by the water vapor of the incinerator, so that the temperature in the incinerator will not be too high, coking will occur, or higher requirements will be placed on the temperature resistance level of the equipment. The ability of the incinerator to cope with the fluctuation of the calorific value of the sludge and the moisture content entering the furnace is improved, the stability and application scope of the incinerator are improved, the energy demand for sludge drying and incineration is reduced, which is conducive to carbon emission reduction. In addition, it is also convenient to replace the water-cooled wall heat exchange buried pipe 5 that is severely worn.

[0050] like Figure 3 As shown, the external furnace pipe 7 is further provided with a regulating valve 10 on the outer side of the furnace body 2. By adjusting the valve 10, the flow rate of the steam-water system flowing in the lower header 8 and the water-cooled wall heat exchange buried pipe 5 can be adjusted. Without disassembling the water-cooled wall heat exchange buried pipe 5, the steam-water flow rate can also be adjusted to cope with the influence of fluctuations in the calorific value of the sludge.

[0051] like Figure 1 As shown, the incinerator also includes an oxygen supply component for the bed layer in the furnace. In this embodiment, the oxygen supply component for the bed layer in the furnace specifically includes an oxygen pipeline 15 and a plurality of oxygen nozzles 16. The oxygen pipeline 15 is connected to each oxygen nozzle 16. The oxygen pipeline 15 is connected to an oxygen storage tank (not shown in the figure), and an oxygen regulating valve (not shown in the figure) is provided between the oxygen pipeline 15 and the oxygen storage tank. In other embodiments, the oxygen supply component for the bed layer in the furnace can also be other structures capable of adjusting the oxygen supply.

[0052] By adjusting the size of the oxygen nozzle 16 and setting the oxygen regulating valve, the oxygen supply can be adjusted according to the change of the sludge calorific value, thereby improving the ability to adapt to the change of the sludge calorific value; when the sludge calorific value is low, pure oxygen can also be introduced to increase the combustion temperature.

[0053] like Figure 1 As shown, a manhole 12 is provided at the bottom of the side wall of the furnace 3, and the manhole 12 is used for maintenance.

[0054] In this solution, a manhole 12 is provided at the bottom of the side wall of the furnace 3 to facilitate maintenance.

[0055] During the operation of the incinerator, the fluctuation of the calorific value of the sludge is judged to determine whether it is necessary to disassemble and assemble the water-cooled wall heat exchange buried pipe 5 for adjustment. If necessary, the adjustment can be carried out in the following manner:

[0056] When the calorific value of the sludge is reduced, the removable flange 11 is disassembled, and the outer furnace pipe 7 and the water-cooled wall heat exchange buried pipe 5 are rotated, and a part of the water-cooled wall heat exchange buried pipe 5 is removed and the pipeline is sealed with a countersunk bolt, thereby reducing the heat exchange area in the furnace, reducing the heat taken away by the cooling water of the steam-water system, ensuring that the temperature in the furnace 3 meets the standard, reducing the heat load of the incinerator, and reducing energy consumption;

[0057] When the calorific value of the sludge increases, the number of the water-cooled wall heat exchange buried pipes 5 is increased, the countersunk bolts are removed, and the increased water-cooled wall heat exchange buried pipes 5 are put in, and the water-cooled wall heat exchange buried pipes 5 and the furnace outer pipes 7 are installed by rotation, and then the detachable flange 11 is installed, and the sealing sleeve is used for sealing, so that the heat exchange area of ​​the water-cooled wall heat exchange buried pipes 5 is increased, and the heat that can be taken away by the steam-water system of the incinerator is increased, and the heat load capacity of the incinerator is increased, so that the sludge incineration amount is kept from decreasing, and the sludge treatment capacity of the incinerator is guaranteed to meet the standards;

[0058] If the calorific value of the sludge fluctuates in the short term, it is not necessary to disassemble the water-cooled wall heat exchange buried pipe 5, and only the regulating valve 10 is controlled to increase or decrease the flow of the steam-water system to cope with the fluctuation of the calorific value of the sludge;

[0059] In addition, when the calorific value of the sludge is low, the amount of oxygen can be controlled by the regulating device of the oxygen supply component, or by providing an appropriate amount of pure oxygen into the incinerator, changing the ignition conditions and increasing the incineration temperature to cope with fluctuations in the calorific value of the sludge.

[0060] Example 2

[0061] The difference between this embodiment and embodiment 1 is only that:

[0062] like Figure 4 and Figure 5As shown, the cross-section of the water-cooled wall heat exchange buried tube 5 is a downwardly protruding water drop shape. Such a structure can increase the contact area between the outer wall of the water-cooled wall heat exchange buried tube 5 and the quartz sand bed 4, increase the heat transfer effect, reduce the resistance of the incinerated sludge fluid flowing through the water-cooled wall heat exchange buried tube, and reduce the wear of the fluidized bed on the heat exchange buried tube.

[0063] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An incinerator, comprising a furnace, characterized in that: The incinerator further comprises a plurality of detachable heat exchange components, which are arranged in the incinerator and located below the furnace, and transfer the heat in the incinerator to the outside of the incinerator; The incinerator further comprises an external water vapor circulation assembly, each of the heat exchangers is connected to the external water vapor circulation assembly, and circulating water for heat exchange flows between the heat exchangers and the external water vapor circulation assembly, and at least a part of the external water vapor circulation assembly is arranged outside the furnace body of the incinerator; The out-of-furnace water vapor circulation assembly includes a plurality of out-of-furnace pipes and a plurality of headers, wherein the headers and at least a portion of the out-of-furnace pipes are arranged outside the furnace body, the headers and the heat exchange element are connected through the out-of-furnace pipes, and circulating water for heat exchange flows through the headers, the out-of-furnace pipes and the heat exchange element, and the headers collect the circulating water and transfer the heat absorbed by the circulating water to the outside of the furnace body; The inner wall of the furnace body is provided with a plurality of water-cooled wall pipes, the water vapor circulation component outside the furnace further includes a downcomer, the header includes an upper header and a lower header, and the lower header and the heat exchange element are connected through the pipeline outside the furnace; One end of the water-cooled wall pipe is connected to the upper header, and the other end of the water-cooled wall pipe is directly connected to the heat exchange element. Circulating water for heat exchange flows through the water-cooled wall pipe, the upper header, and the lower header.

2. The incinerator according to claim 1, characterized in that: The external pipe of the furnace is connected to the heat exchange element through a threaded pipe, and a detachable flange is arranged on the external pipe of the furnace.

3. The incinerator according to claim 1, characterized in that: The external pipeline of the furnace is also provided with a regulating valve.

4. The incinerator according to claim 1, characterized in that: The incinerator further comprises a steam drum, and the steam drum is communicated with the upper header.

5. The incinerator according to claim 1, characterized in that: The incinerator further comprises an in-furnace bed oxygen supply component, the in-furnace bed oxygen supply component is connected to an oxygen storage tank arranged outside the incinerator, and the in-furnace bed oxygen supply component adjusts the oxygen supply amount.

6. The incinerator according to claim 5, characterized in that: The furnace bed oxygen supply assembly includes an oxygen pipeline and a plurality of oxygen nozzles. The oxygen pipeline is connected to each of the oxygen nozzles. The oxygen pipeline is connected to the oxygen storage tank, and an oxygen regulating valve is provided between the oxygen pipeline and the oxygen storage tank.

7. The incinerator according to claim 1, characterized in that: The heat exchange element is a water-cooled wall heat exchange buried pipe, which is buried in the incineration carrier in the incinerator and is connected to the water-cooled wall pipeline on the inner wall of the furnace. The water-cooled wall heat exchange buried pipe and the water-cooled wall pipeline circulate circulating water for heat exchange, and the circulating water transfers the heat in the incinerator to the outside of the incinerator.

8. The incinerator according to claim 7, characterized in that The cross-sectional profile of the water-cooled wall heat exchange buried tube has at least one protrusion outward in the diameter direction of the water-cooled wall heat exchange buried tube.

9. The incinerator according to claim 1, characterized in that: A manhole is provided at the bottom of the side wall of the furnace, and the manhole is used for maintenance.

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