CN112268268B

CN112268268B - Medical waste treatment modularization combination formula waste heat device

Info

Publication number: CN112268268B
Application number: CN202010915276.8A
Authority: CN
Inventors: 王卫华; 吴献南; 刘明; 楼华福; 徐飞; 古德武; 李春红
Original assignee: Zhejiang Shuangfeng Boiler Co ltd
Current assignee: Zhejiang Shuangfeng Boiler Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2023-03-24
Anticipated expiration: 2040-09-03
Also published as: CN112268268A

Abstract

The invention belongs to the technical field of medical waste treatment equipment, and particularly relates to a medical waste treatment modular combined type waste heat device which comprises a boiler and a dry-type quencher; the boiler comprises a hearth; the dry-type quencher comprises an upper smoke box, a lower smoke box and a shell; two ends of the shell are respectively connected with the upper smoke box and the lower smoke box; a plurality of smoke pipes are arranged in the shell, smoke is circulated in the smoke pipes, and a cooling medium is circulated between the outer parts of the smoke pipes and the shell; the bottom of the shell is provided with a cooling medium inlet, and the top of the shell is provided with a cooling medium outlet; the upper smoke box is provided with a smoke inlet area and a smoke exhaust area; the smoke inlet area is communicated with the lower smoke box through one part of smoke pipes, and the lower smoke box is communicated with the smoke exhaust area through the other part of smoke pipes; the smoke inlet area is provided with a smoke inlet, and the smoke exhaust area is provided with a smoke exhaust port; a flue is connected between the hearth outlet and the smoke inlet. The invention adopts the combination of the boiler and the dry-type quencher, thus reducing the harmful substances in the flue gas to the maximum extent.

Description

Medical waste treatment modularization combination formula waste heat device

Technical Field

The invention belongs to the technical field of medical waste treatment equipment, and particularly relates to a medical waste treatment modular combined type waste heat device.

Background

The solid waste garbage in daily life includes household garbage, industrial solid waste, medical waste and the like. The medical waste is mainly treated by adopting an incineration method, but a large amount of smoke is generated in the incineration process, and the smoke contains a large amount of harmful pollutants, so that a smoke treatment system is required. Flue gas processing system among the prior art has the quench cooler, and the quench cooler main objective reduces the temperature of high temperature flue gas, reduces the formation of dioxin class organic pollutant to in order to handle follow-up flue gas simultaneously.

The quench cooler includes a wet quench cooler and a dry quench cooler. The wet-type quencher sets up spray system through the passageway at the high temperature flue gas, contacts and carries out the heat exchange to the high temperature flue gas through spraying cooling medium, reaches the purpose of cooling off the high temperature flue gas, but the dust in the flue gas leads to spray system's pipeline to appear blockking up easily to spray the liquid and cause the pollution, follow-up water pollution treatment facility that still needs to adopt. The dry type quencher cools flue gas in the pipe by utilizing wind or water to separate a layer of pipe wall, has the advantages that cooling medium is not in direct contact with the flue gas, secondary pollution of water is not caused, the pipeline is not blocked, and simultaneously the water content in the flue gas is not increased. However, the existing dry-type quencher has low heat exchange efficiency and large volume, and the wide application of the dry-type quencher is restricted. In addition, only a dry quencher is used for treating the smoke generated by the incineration of the medical waste, and the effect of reducing harmful substances in the smoke is not ideal.

Disclosure of Invention

The invention aims to solve the problem that the technical means for reducing harmful substances in smoke generated by medical waste incineration is not ideal in the prior art, and provides a medical waste treatment modular combined type waste heat device.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a medical waste treatment modularization combined type waste heat device comprises a boiler and a dry type quencher; the boiler comprises a hearth; the dry-type quencher comprises an upper smoke box, a lower smoke box and a shell; two ends of the shell are respectively connected with the upper smoke box and the lower smoke box; a plurality of smoke pipes are arranged in the shell, smoke circulates inside the smoke pipes, and cooling media circulates between the outside of the smoke pipes and the shell; the bottom of the shell is provided with a cooling medium inlet, and the top of the shell is provided with a cooling medium outlet; the upper smoke box is provided with a smoke inlet area and a smoke exhaust area; the smoke inlet area is communicated with the lower smoke box through one part of smoke pipes, and the lower smoke box is communicated with the smoke exhaust area through the other part of smoke pipes; the smoke inlet area is provided with a smoke inlet, and the smoke exhaust area is provided with a smoke exhaust port; a flue is connected between the hearth outlet and the smoke inlet.

Furthermore, the wall surface of the hearth is a membrane type water-cooled wall; the membrane type water-cooled walls comprise a front membrane type water-cooled wall, a rear membrane type water-cooled wall, a left membrane type water-cooled wall and a right membrane type water-cooled wall; the hearth is formed by surrounding a front membrane type water-cooled wall, a rear membrane type water-cooled wall, a left membrane type water-cooled wall, a right membrane type water-cooled wall and an upper membrane type water-cooled wall.

Furthermore, a plurality of air soot blowers are arranged along the circumference surrounded by the front membrane type water-cooled wall, the rear membrane type water-cooled wall, the left membrane type water-cooled wall and the right membrane type water-cooled wall; the body of the air soot blower is positioned outside the hearth, and the nozzle of the air soot blower extends into the hearth.

Furthermore, the smoke inlet area is also provided with a smoke return port, and a smoke return pipe is connected between the smoke outlet and the smoke return port.

Furthermore, a plurality of smoke pipes are uniformly arranged in the shell, and gaps are formed between the adjacent smoke pipes.

Furthermore, a plurality of water-cooled walls which are parallel to each other are arranged in the hearth at intervals, and the periphery of each water-cooled wall is respectively connected with the front membrane water-cooled wall, the rear membrane water-cooled wall, the left membrane water-cooled wall and the right membrane water-cooled wall; the flue gas in the hearth flows to the water-cooled wall vertically; each water-cooling wall is provided with a plurality of through holes, and the through holes of two adjacent water-cooling walls are arranged in a staggered manner.

Furthermore, a partition plate is arranged in the upper smoke box, and the smoke inlet area and the smoke exhaust area are positioned on two sides of the partition plate; the top of the upper smoke box is hermetically connected with the cover plate, and the partition plate is hermetically connected with the cover plate; a cover plate corresponding to the smoke inlet area is provided with a smoke inlet inspection hole, and the smoke inlet inspection hole is provided with a smoke inlet ash removal door; the cover plate corresponding to the smoke exhaust area is provided with a smoke exhaust check hole, and the smoke exhaust check hole is provided with a smoke exhaust ash removal door.

Furthermore, a first cover plate surface, a second cover plate surface, a third cover plate surface and a fourth cover plate surface which are connected in a step shape are sequentially arranged at the edge of the cover plate; the edge of the top of the upper smoke box is provided with a first upper smoke box surface, a second upper smoke box surface, a third upper smoke box surface and a fourth upper smoke box surface which are sequentially connected in a step shape; the first cover plate surface, the second cover plate surface, the third cover plate surface and the fourth cover plate surface are respectively opposite to the first upper smoke box surface, the second upper smoke box surface, the third upper smoke box surface and the fourth upper smoke box surface, a sealing ring is arranged between the second cover plate surface and the second upper smoke box surface, and the opposite surfaces and the sealing ring are combined to form a labyrinth sealing structure.

Furthermore, the cover plate is provided with a circle of groove along the circumferential direction of the smoke inlet inspection hole and the circumferential direction of the smoke exhaust inspection hole, and the edges of the smoke inlet ash removal door and the smoke exhaust ash removal door are provided with a circle of bulge; the bulge of the smoke inlet ash removal door and the bulge of the smoke exhaust ash removal door are respectively inserted into the corresponding grooves.

Furthermore, a cantilever capable of rotating and swinging is arranged above the cover plate, the outer wall of the shell is connected with an upright post, and the cantilever is connected with the upright post; the upright column comprises a first upright tube and a second upright tube, and a flange is sleeved outside the top end of the first upright tube; one end of the second vertical pipe extends into the first vertical pipe, and the other end of the second vertical pipe is connected with the cantilever; the second vertical pipe is positioned in the flange at the same time, and the flange is opposite to the cantilever; the second vertical pipe and the cantilever integrally rotate around the top end of the first vertical pipe provided with the flange.

Furthermore, the flange is provided with a plurality of flange positioning through holes, and the cantilever is provided with a cantilever positioning through hole; when the cantilever rotates to a certain angle, the cantilever positioning through hole of the cantilever corresponds to the flange positioning through hole of the flange, and the pin successively penetrates through the cantilever positioning through hole of the cantilever and the flange positioning through hole of the flange so as to fix the rotating position of the cantilever through the pin.

Furthermore, the inner wall of the smoke tube is provided with threads.

Furthermore, the lower smoke box is an ash falling hopper, and an ash falling opening is formed in the bottom of the ash falling hopper.

Further, the boiler and the dry-type quencher are both of vertical structures.

Further, the boiler is an angle pipe type waste heat boiler.

Compared with the prior art, the invention has the beneficial technical effects that:

(1) The smoke flowing in the smoke pipe exchanges heat with the cooling medium flowing outside the smoke pipe, the smoke in the smoke inlet area reaches the lower smoke box through one part of smoke pipe, the smoke in the lower smoke box reaches the smoke exhaust area through the other part of smoke pipe, the smoke and the cooling medium flow through the length of double smoke pipes in the whole heat exchange process, the heat exchange efficiency of the dry type quencher is improved, the retention time of the smoke entering the dry type quencher from 550 ℃ to 220 ℃ is less than 0.5 second, the emission temperature of the smoke is effectively reduced, and the volume of the dry type quencher can be reduced; the boiler and the dry type quencher are combined with each other, so that harmful substances in the flue gas can be reduced to the maximum extent;

(2) The inner wall of the hearth adopts a membrane type water-cooled wall, so that the sealing performance is good, the air leakage is less, the excess air coefficient is low, the flue gas temperature is reduced, and the generation amount of dioxin harmful substances is favorably reduced;

(3) The cover plate is provided with a smoke inlet inspection hole and a smoke exhaust inspection hole, and the smoke inlet area or the smoke exhaust area can be independently overhauled and cleaned; when the smoke inlet area is overhauled or cleaned, only the smoke inlet and ash cleaning door needs to be opened; when the smoke exhaust area is overhauled or cleaned, only the smoke exhaust and ash cleaning door needs to be opened;

(4) The lifting lug is hooked by the electric hoist so as to open the smoke inlet ash removing door or the smoke exhaust ash removing door or the cover plate.

(5) The smoke box sealing performance is provided by adopting various sealing modes, air leakage is reduced, the excess air coefficient is controlled, and the generation amount of dioxin harmful substances is favorably reduced;

(6) The smoke tube is a threaded smoke tube, the threaded smoke tube with high-efficiency heat transfer is adopted, and the threaded smoke tube is vertically arranged, so that dust is not easy to accumulate, and the heated surface is kept clean.

Drawings

FIG. 1 is a block diagram of a modular waste heat device for medical waste treatment according to an embodiment of the present invention;

FIG. 2 is a top view of the modular waste heat device for medical waste treatment according to the present embodiment;

FIG. 3 is a schematic diagram showing the construction of the dry chiller according to the present embodiment;

FIG. 4 is a schematic structural view of the boiler according to the present embodiment;

FIG. 5 is a schematic structural diagram of the first water-cooled wall according to this embodiment.

FIG. 6 is a schematic structural diagram of a second water-cooled wall according to the present embodiment.

FIG. 7 is a view showing the structure of the upper smoke box of the present embodiment;

FIG. 8 is a view showing the structure of a cover plate;

FIG. 9 is a view showing the structure of the edge of the cover plate;

FIG. 10 is a top edge view of the upper smoke box;

FIG. 11 is a sectional view of the connection of the cantilever and the column;

FIG. 12 is a view showing a connection structure of a cantilever and a column;

FIG. 13 is a top view of the cantilever.

In the figure, 1 hearth, 2 upper smoke box, 3 lower smoke box, 4 shell, 5 smoke tube, 6 smoke inlet area, 7 smoke exhaust area, 8 flue, 9 partition, 10 smoke return port, 11 front membrane water wall, 12 back membrane water wall, 13 left membrane water wall, 14 right membrane water wall, 15 air soot blower, 16 first water wall, 17 second water wall, 18 cover plate, 19 smoke inlet soot cleaning door, 20 smoke exhaust soot cleaning door, 21 first cover plate, 22 second cover plate, 23 third cover plate, 24 fourth cover plate, 25 first upper smoke box surface, 26 second upper smoke box surface, 27 third upper smoke box surface, 28 fourth upper smoke box surface, 29 sealing ring, 30 bulge, 31 lifting lug, 32 cantilever, 33 first riser, 34 second riser, 35 flange, 36 flange positioning through hole, 37 pin.

Detailed Description

The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.

As shown in fig. 1 to 4, the present embodiment is a modular combined waste heat device for medical waste treatment, which includes a dry chiller and a boiler. The dry chiller includes an upper smoke box 2, a lower smoke box 3, and a housing 4. The two ends of the shell 4 are respectively connected with the upper smoke box 2 and the lower smoke box 3. A plurality of smoke pipes 5 are arranged in the shell 4, smoke flows through the inside of the smoke pipes 5, and cooling medium flows between the outside of the smoke pipes 5 and the shell 4. The upper smoke box 2 is internally provided with a smoke inlet area 6 and a smoke exhaust area 7 which are mutually isolated. The smoke inlet area is communicated with the lower smoke box through one part of smoke pipes 5, and the lower smoke box is communicated with the smoke exhaust area through the other part of smoke pipes 5. The smoke inlet area 6 is provided with a smoke inlet, and the smoke exhaust area 7 is provided with a smoke exhaust. The boiler includes furnace 1, and the flue gas that medical waste burns and produces firstly lets in the furnace 1 of boiler, reduces the flue gas temperature in furnace, can effectively control the formation of harmful substance in the flue gas. A flue 8 is connected between the outlet of the furnace 1 of the boiler and the smoke inlet. One part of the smoke pipe 5 is connected between the smoke inlet area 6 and the lower smoke box 3, and the other part of the smoke pipe 5 is connected between the smoke exhaust area 7 and the lower smoke box 3. The smoke in the smoke inlet area 6 reaches the lower smoke box 3 through one part of smoke pipes 5, and the smoke in the lower smoke box 3 reaches the smoke exhaust area 7 through the other part of smoke pipes 5.

The flue gas flowing in the smoke tube 5 exchanges heat with the cooling medium flowing outside the smoke tube 5, and a good heat exchange effect can be achieved. The flowing direction of the flue gas in the flue pipe 5 is opposite to the flowing direction of the cooling medium in the shell 4, so that the heat exchange effect is enhanced. Specifically, the bottom of the shell 4 is provided with a cooling medium inlet, the top of the shell is provided with a cooling medium outlet, and the cooling medium flows from bottom to top in the shell 4. The flue gas flows from top to bottom along the interior of the flue pipe 5. The whole process of heat exchange between the flue gas and the cooling medium flows through the double length of the flue pipe 5, the flow path of the flue gas is prolonged, the heat exchange efficiency of the flue gas and the cooling medium is improved, the residence time of the flue gas entering the dry type quencher from 550 ℃ to 220 ℃ is less than 0.5 second, the emission temperature of the flue gas is effectively reduced, and meanwhile, the volume of the dry type quencher can be reduced. The flue gas with reduced temperature is discharged from the smoke outlet. The falling ash at the bottom of the dry quencher can be discharged from the lower smoke box 3. The cooling medium is discharged from the casing 4 after the temperature of the cooling medium is increased, and the cooling medium with lower temperature is replenished into the casing 4. The boiler is the first module of this embodiment, and the dry chiller is the second module of this embodiment, and this embodiment adopts boiler and dry chiller to carry out the modularization combination to handle the flue gas that medical waste burns and produces, can reduce the harmful substance in the flue gas to the utmost extent.

The position of the outlet of the hearth 1 is higher than the inlet of the hearth 1, and the flue gas flows from bottom to top in the hearth 1 integrally. The wall surface of a hearth 1 of the boiler is a membrane water-cooling wall, and the membrane water-cooling wall comprises a front membrane water-cooling wall 11, a rear membrane water-cooling wall 12, a left membrane water-cooling wall 13 and a right membrane water-cooling wall 14. The hearth 1 is formed by surrounding a front membrane type water-cooled wall 11, a rear membrane type water-cooled wall 12, a left membrane type water-cooled wall 13 and a right membrane type water-cooled wall 14. The front membrane type water-cooled wall 13 is bent and extended towards the top to form the top of the hearth. The membrane type water-cooled wall has good sealing performance, less air leakage and low excess air coefficient, reduces the temperature of flue gas, and is beneficial to reducing the generation amount of dioxin harmful substances. And a plurality of air soot blowers 15 are arranged along the circumferential direction enclosed by the front membrane type water-cooled wall 11, the rear membrane type water-cooled wall 12, the left membrane type water-cooled wall 13 and the right membrane type water-cooled wall 14. The body of the air soot blower 15 is positioned outside the hearth, and the nozzle of the air soot blower 15 extends into the hearth. The air sootblower 15 of the present embodiment is an automatic telescopic compressed air sootblower.

As shown in fig. 5 and 6, a plurality of parallel water-cooled walls are arranged in the furnace 1 at intervals. The periphery of each water wall is respectively connected with a front membrane type water wall 11, a rear membrane type water wall 12, a left membrane type water wall 13 and a right membrane type water wall 14. The flue gas in the hearth 1 vertically flows to the water-cooled wall. Each water-cooled wall all is equipped with the several through-hole, and the flue gas vertical flow in the furnace 1 flows to the water-cooled wall and flows out in the through-hole. The through holes of two adjacent water-cooled walls are arranged in a staggered manner. The flue gas in the furnace flows to the water-cooled walls vertically, and the flue gas flowing out of the through hole of one water-cooled wall is shielded by the other water-cooled wall adjacent to the through hole. The flue gas is sheltered from and flows out from the through hole of another water-cooling wall after changing direction. The water-cooled wall can block solid impurities contained in the flue gas, so that more soot is settled at the bottom of the hearth 1. The number of the water-cooled walls is three, the water-cooled walls are a first water-cooled wall 16, a second water-cooled wall 17 and a third water-cooled wall in sequence, and the flue gas firstly passes through the first water-cooled wall 16. The shape of the through holes of the water wall can be round or long, and the specific number can be adjusted according to actual conditions.

In order to form the smoke inlet area 6 and the smoke exhaust area 7, a partition plate 9 is arranged in the upper smoke box 2, and the smoke inlet area 6 and the smoke exhaust area 7 are positioned on two sides of the partition plate 9. After flowing out of the hearth 1, the flue gas enters the smoke inlet area 6 of the upper smoke box 2 through the flue 8, and the flue gas circulating in the smoke pipe 5 is cooled by a cooling medium and then is discharged from the smoke discharge area 7 of the upper smoke box 2. The smoke inlet area 6 is also provided with a smoke return port 10, and a smoke return pipe is connected between the smoke outlet and the smoke return port 10. When the dry type quencher is in use, part of the smoke discharged from the smoke exhaust area 7 can be returned to the smoke inlet area 6, the temperature and the flow speed of the smoke in the smoke inlet area 6 can be flexibly adjusted, and low-load dust accumulation is prevented. A plurality of smoke tubes 5 are arranged uniformly within the housing 4 and are arranged generally cylindrically in the central region of the housing 4. Gaps are arranged between the adjacent smoke pipes 5. Flowing cooling media are arranged in the gaps, so that the periphery of each smoke tube 5 is filled with the cooling media, and the heat exchange efficiency of smoke in the smoke tubes 5 and the cooling media outside the smoke tubes 5 is improved. The inner wall of the smoke tube 5 is provided with threads, and the spiral stripes are beneficial to impacting smoke dust attached to the inner wall of the smoke tube 5 by the smoke gas, so that the smoke dust is prevented from being accumulated on the inner wall of the smoke tube 5 for a long time to block the smoke tube 5, and the smoke tube 5 is kept in a smooth state. The embodiment adopts the threaded smoke pipe with high-efficiency heat transfer, the threaded smoke pipe is vertically arranged, dust is not easy to accumulate, and the cleaning of the heating surface is facilitated.

As shown in fig. 7 and 8, the top of the upper smoke box 2 is hermetically connected with the cover plate 18, and the partition plate is hermetically connected with the cover plate 18. The cover plate 18 corresponding to the smoke inlet area is provided with a smoke inlet check hole, and the smoke inlet check hole is provided with a smoke inlet ash removal door 19 which is hermetically connected with the cover plate 18. The cover plate 18 corresponding to the smoke exhaust area is provided with a smoke exhaust inspection hole, and the smoke exhaust inspection hole is provided with a smoke exhaust ash removal door 20 which is hermetically connected with the cover plate 18. The number of the smoke inlet and

dust removing doors

19 and 20 is plural. When maintenance or ash removal is required, the entire cover plate 18 need not be removed. When the smoke inlet area is overhauled or cleaned, only the smoke inlet and ash cleaning door 19 needs to be opened. When the smoke exhaust area is overhauled or cleaned, only the smoke exhaust and ash cleaning door 20 needs to be opened.

As shown in fig. 9 and 10, the first cover plate surface 21, the second cover plate surface 22, the third cover plate surface 23, and the fourth cover plate surface 24 are sequentially provided at the edge of the cover plate 18 in a step-like manner, and the first upper box surface 25, the second upper box surface 26, the third upper box surface 27, and the fourth upper box surface 28 are sequentially provided at the edge of the top of the upper box 2 in a step-like manner. The first cover plate surface 21, the second cover plate surface 22, the third cover plate surface 23 and the fourth cover plate surface 24 are respectively opposite to the first upper smoke box surface 25, the second upper smoke box surface 26, the third upper smoke box surface 27 and the fourth upper smoke box surface 28, a sealing ring 29 is arranged between the second cover plate surface 22 and the second upper smoke box surface 26, and the opposite surfaces are combined with the sealing ring 29 to form a labyrinth sealing structure. The labyrinth seal improves the seal between the upper smoke box 2 and the cover plate 18. The sealing ring 29 is made of asbestos pad. After the cover plate 18 is connected with the upper smoke box 2, the cover plate is firmly fixed by using screws. And the partition board and the cover plate 18 are firmly fixed through screws. When the cover plate 18 is removed, the cover plate 18 can be removed by removing the screws. In order to ensure the sealing performance when the smoke inlet and dust removing door 19 and the smoke exhaust and dust removing door 20 are fixed, the cover plate 18 is provided with a circle of grooves along the circumferential direction of the smoke inlet and dust removing inspection holes, and the edges of the smoke inlet and dust removing door 19 and the smoke exhaust and dust removing door 20 are provided with a circle of bulges 30. The protrusion 30 of the soot-feeding door 19 and the protrusion 30 of the soot-removing door 20 are inserted into the corresponding grooves. When the smoke and dust inlet door 19 is installed, the bulge 30 at the edge of the smoke and dust inlet door 19 is pressed into the groove formed in the circumferential direction of the smoke inlet inspection hole, and then the smoke and dust inlet door 19 is fixed with the cover plate 18 by using screws. When the smoke evacuation deashing door 20 is installed, the protrusion 30 at the edge of the smoke evacuation deashing door 20 is pressed into the groove arranged along the circumferential direction of the smoke evacuation inspection hole, and then the smoke evacuation deashing door 20 is fixed with the cover plate 18 by using screws. For hoisting the smoke inlet and dust removal door 19, the smoke outlet and dust removal door 20 and the cover plate 18, the smoke inlet and dust removal door 19, the smoke outlet and dust removal door 20 and the cover plate 18 are all provided with lifting lugs 31.

As shown in fig. 11-13, a rotatable and swinging cantilever 32 is provided above the cover plate 18, and an electric hoist is hung on the cantilever 32, and the lifting lug 31 is hooked by the electric hoist, so as to open the smoke inlet and dust removing door 19, the smoke exhaust and dust removing door 20 or the cover plate 18. The outer wall of the shell 4 is connected with a column, and the cantilever 32 is connected with the column. The mast and boom 32 form a suspension mechanism. The upright column comprises a first vertical pipe 33 and a second vertical pipe 34, wherein a flange 35 is sleeved outside the top end of the first vertical pipe 33, and the flange 35 is fixedly connected with the first vertical pipe 33. The second riser 34 extends into the first riser 33 at one end and is connected to the boom 32 at the other end. The second riser 34 is fixedly connected to the boom 32. The second riser 34 is also located within the flange 35, the flange 35 being opposite the boom 32. The second riser 34 is pivoted integrally with the boom 32 about the top end of the first riser 33 to which the flange 35 is mounted.

The flange 35 is provided with a plurality of flange positioning through holes 36, and the cantilever 32 is provided with a cantilever positioning through hole. The plurality of flange positioning through holes 36 are arranged in a circular arc shape, and each flange positioning through hole 36 corresponds to a rotation angle of the cantilever 32. When the cantilever 32 rotates to a certain angle, the cantilever positioning through hole of the cantilever 32 corresponds to a flange positioning through hole 36 of the flange 35, and the pin 37 sequentially penetrates through the cantilever positioning through hole of the cantilever 32 and the flange positioning through hole 36 of the flange 35, so that the rotating position of the cantilever 32 is fixed through the pin 37, the cantilever 32 is prevented from swinging randomly to influence the lifting of the smoke inlet and dust removing door 19, the smoke exhaust and dust removing door 20 and the cover plate 18, and the stability of the cantilever 32 in the lifting process is ensured. The first and

second risers

33, 34 are perpendicular to the boom 32. The first vertical pipe 33 and the second vertical pipe 34 are connected with the circular pipe. The cantilever 32 is two channels spliced to each other. The openings of the two channel steels are opposite. The two channel steels spliced into a whole are provided with through holes matched with the second vertical pipe 34, and the other end of the second vertical pipe 34 extends into the through holes.

In order to clean the ash conveniently, the lower smoke box 3 is an ash falling bucket, the ash falling is convenient, and the furnace does not need to be stopped for cleaning. The bottom of the ash falling hopper is provided with an ash falling port. The impurity particles in the flue gas are deposited in the ash falling hopper, the valve is installed at the ash falling port, and the valve is opened periodically to discharge the impurity particles from the ash falling hopper in time. An ash falling hopper is also arranged at the bottom of the hearth 1, and the structure and the use principle of the ash falling hopper are the same as those of the lower smoke box 3. The present embodiment further includes a circulation pump disposed outside the casing 4 to provide power for the circulation flow of the cooling medium. Under the driving action of the circulating pump, the cooling medium with lower temperature enters the shell 4 from the bottom of the shell 4, the temperature rises after absorbing the heat in the flue gas, and the cooling medium with the raised temperature flows out from the top of the shell 4. The boiler and the dry-type quencher are both of vertical structures and are vertically arranged on a horizontal plane, so that the occupied area of the whole device is reduced. The boiler is the angle pipe formula exhaust-heat boiler, with the frame of pipe-line system conduct boiler, can save steel in a large number, reduces boiler cost, is convenient for simultaneously carry out the modularization combination with dry-type quench cooler, installs in a flexible way and dismantles to fully retrieve the heat that the flue gas contains.

The using method of the embodiment comprises the following steps: introducing smoke generated by combustion of medical waste into a boiler hearth 1; the flue gas discharged from the outlet of the hearth 1 enters a dry type quencher, an upper smoke box 2, a smoke pipe 5 and a lower smoke box 3 of the dry type quencher form a flue gas channel, the area between the outside of the smoke pipe 5 and the shell 4 is a cooling medium channel, and the flue gas is discharged from a smoke discharging area 7 of the upper smoke box 2 after heat exchange with the cooling medium. Test results show that the retention time of the flue gas entering the dry quencher for reducing the temperature from 550 ℃ to 220 ℃ is less than 0.5 second, and meanwhile, the content of dioxin in the finally discharged flue gas meets the national standard.

While the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that variations may be made in the embodiments without departing from the spirit of the invention, and such variations are to be considered within the scope of the invention.

Claims

1. The utility model provides a medical waste handles modularization combination formula waste heat device which characterized in that:

comprises a boiler and a dry-type quencher;

the boiler comprises a hearth (1), wherein the position of an outlet of the hearth (1) is higher than that of an inlet of the hearth (1), and the wall surface of the hearth (1) is a membrane water-cooled wall; the membrane water-cooling walls comprise a front membrane water-cooling wall (11), a rear membrane water-cooling wall (12), a left membrane water-cooling wall (13) and a right membrane water-cooling wall (14); the hearth (1) is formed by surrounding a front membrane type water-cooled wall (11), a rear membrane type water-cooled wall (12), a left membrane type water-cooled wall (13), a right membrane type water-cooled wall (14) and an upper membrane type water-cooled wall, a plurality of water-cooled walls which are parallel to each other are arranged in the hearth (1) at intervals, and the periphery of each water-cooled wall is respectively connected with the front membrane type water-cooled wall (11), the rear membrane type water-cooled wall (12), the left membrane type water-cooled wall (13) and the right membrane type water-cooled wall (14); the flue gas in the hearth (1) vertically flows to a water-cooled wall; each water-cooled wall is provided with a plurality of through holes, and the through holes of two adjacent water-cooled walls are arranged in a staggered manner; the dry-type quencher comprises an upper smoke box (2), a lower smoke box (3) and a shell (4); two ends of the shell (4) are respectively connected with the upper smoke box (2) and the lower smoke box (3); a plurality of smoke tubes (5) are arranged in the shell (4), smoke circulates in the smoke tubes (5), and cooling medium circulates between the outer part of the smoke tubes (5) and the shell (4); the bottom of the shell (4) is provided with a cooling medium inlet, and the top of the shell is provided with a cooling medium outlet;

the upper smoke box (2) is provided with a smoke inlet area (6) and a smoke exhaust area (7); the smoke inlet area (6) is communicated with the lower smoke box (3) through one part of smoke pipes (5), and the lower smoke box (3) is communicated with the smoke exhaust area (7) through the other part of smoke pipes (5); the smoke inlet area (6) is provided with a smoke inlet, and the smoke exhaust area (7) is provided with a smoke exhaust; a flue (8) is connected between the outlet of the hearth (1) and the smoke inlet.

2. The modular combined medical waste treatment device of claim 1, wherein:

a plurality of air soot blowers (15) are arranged along the circumferential direction surrounded by the front membrane type water cooling wall (11), the rear membrane type water cooling wall (12), the left membrane type water cooling wall (13) and the right membrane type water cooling wall (14); the body of the air soot blower (15) is positioned outside the hearth (1), and the nozzle of the air soot blower (15) extends into the hearth (1).

3. The modular combined medical waste treatment device of claim 1, wherein:

a partition plate (9) is arranged in the upper smoke box (2), and the smoke inlet area (6) and the smoke exhaust area (7) are positioned on two sides of the partition plate (9); the top of the upper smoke box (2) is hermetically connected with a cover plate (18), and the partition plate (9) is hermetically connected with the cover plate (18); a cover plate (18) corresponding to the smoke inlet area (6) is provided with a smoke inlet inspection hole, and the smoke inlet inspection hole is provided with a smoke inlet ash removal door (19); the cover plate (18) corresponding to the smoke exhaust area (7) is provided with a smoke exhaust inspection hole, and the smoke exhaust inspection hole is provided with a smoke exhaust ash removal door (20).

4. The modular combined medical waste treatment device of claim 3, wherein: the edge of the cover plate (18) is sequentially provided with a first cover plate surface (21), a second cover plate surface (22), a third cover plate surface (23) and a fourth cover plate surface (24) which are connected in a step shape; the top edge of the upper smoke box (2) is provided with a first upper smoke box surface (25), a second upper smoke box surface (26), a third upper smoke box surface (27) and a fourth upper smoke box surface (28) which are sequentially connected in a step shape; the first cover plate surface (21), the second cover plate surface (22), the third cover plate surface (23) and the fourth cover plate surface (24) are respectively opposite to the first upper smoke box surface (25), the second upper smoke box surface (26), the third upper smoke box surface (27) and the fourth upper smoke box surface (28), a sealing ring (29) is arranged between the second cover plate surface (22) and the second upper smoke box surface (26), and the opposite surfaces are combined with the sealing ring (29) to form a labyrinth sealing structure.

5. The modular combined medical waste treatment device of claim 3, wherein: the cover plate (18) is provided with a circle of grooves along the circumferential direction of the smoke inlet inspection hole and the circumferential direction of the smoke exhaust inspection hole, and the edges of the smoke inlet ash removal door (19) and the smoke exhaust ash removal door (20) are provided with a circle of bulges (30); the bulge (30) of the smoke inlet and ash removal door (19) and the bulge (30) of the smoke exhaust and ash removal door (20) are respectively inserted into the corresponding grooves.

6. The modular combined medical waste heat device of any one of claims 3-5, wherein:

a cantilever (32) capable of rotating and swinging is arranged above the cover plate (18), the outer wall of the shell (4) is connected with a stand column, and the cantilever (32) is connected with the stand column;

the upright column comprises a first vertical pipe (33) and a second vertical pipe (34), and a flange (35) is sleeved outside the top end of the first vertical pipe (33); one end of the second vertical pipe (34) extends into the first vertical pipe (33), and the other end of the second vertical pipe is connected with the cantilever (32); the second vertical pipe (34) is simultaneously positioned in a flange (35), and the flange (35) is opposite to the cantilever (32); the second vertical pipe (34) and the cantilever (32) integrally rotate around the top end of the first vertical pipe (33) provided with the flange (35).

7. The modular combined medical waste treatment device of claim 6, wherein:

the flange (35) is provided with a plurality of flange positioning through holes (36), and the cantilever (32) is provided with a cantilever positioning through hole; when the cantilever (32) rotates to a certain angle, the cantilever positioning through hole of the cantilever (32) corresponds to the flange positioning through hole (36) of the flange (35), and the pin (37) sequentially penetrates through the cantilever positioning through hole of the cantilever (32) and the flange positioning through hole (36) of the flange (35) so as to fix the rotating position of the cantilever (32) through the pin (37).

8. The modular combined medical waste treatment device of claim 1, wherein: the inner wall of the smoke tube (5) is provided with screw threads.