CN220159476U - Temperature-control cyclone dust collector and garbage incineration treatment and energy utilization system - Google Patents

Abstract

The utility model relates to a temperature-control type cyclone dust collector and a garbage incineration treatment and energy utilization system, wherein the temperature-control type cyclone dust collector comprises an inner cylinder body, an outer cylinder body and a cone cylinder body which are sequentially connected up and down; the inner cylinder body is inserted into the outer cylinder body from the upper part, the air inlet is arranged substantially tangentially to the circumferential direction of the outer cylinder body, and the upper end of the inner cylinder body is provided with an air outlet; the cooling assembly comprises an upper annular water jacket and a lower annular water jacket, the upper annular water jacket and the lower annular water jacket are sleeved on the periphery of the inner cylinder body, and the upper annular water jacket and the lower annular water jacket are arranged at intervals; the upper annular water jacket and the lower annular water jacket are internally provided with cavities, and are communicated through a plurality of water cooling pipes; the upper annular water jacket is connected with a cold water inlet pipe, the lower annular water jacket is connected with a cold water outlet pipe, and the cold water inlet pipe and the cold water outlet pipe extend out of the outer cylinder body. The temperature of the flue gas discharged from the air outlet is reduced by the circulation of cold water in the cooling assembly. The temperature of the cooling water is controlled or the flow of the cooling water is regulated, so that the temperature of the flue gas discharged by the cyclone dust collector is regulated.

Description

Temperature-control cyclone dust collector and garbage incineration treatment and energy utilization system

Technical Field

The utility model belongs to the technical field of municipal solid waste treatment, and particularly relates to a temperature-control cyclone dust removal device and a garbage incineration treatment and energy utilization system.

Background

With the acceleration of urban construction and the steady improvement of the living standard of people in China, the quantity of urban garbage is continuously increased, and the problems of environmental pollution, resource waste, disease breeding and the like are accompanied with the treatment of garbage, so that the pursuit of people on good life is influenced.

The incineration method is a process of mixing and combusting an organic combustible part in garbage with oxygen to generate inorganic products. In the process, the moisture in the garbage is basically removed, so that the garbage volume is greatly reduced, microbial parasitism can be well prevented, and some harmful fermentation processes are avoided. Meanwhile, a large amount of heat generated in the incineration process can be used for the gas turbine to burn water for power generation after passing through the waste heat boiler, so that the heat recovery in the garbage is realized. Therefore, the incineration method has obvious advantages in the aspects of realizing harmless, reduction and recycling treatment of garbage.

The ideal temperature value of the flue gas discharged by the vertical garbage incinerator of the garbage incineration treatment and energy utilization equipment is 800-850 ℃, the temperature is attenuated after particles are removed by the cyclone dust removal device, the flue gas temperature at the inlet side of the waste heat boiler is 600-650 ℃, and the design parameters of the heat energy utilization module of the waste heat boiler are matched with 600-650 ℃.

Meanwhile, dust generated by garbage incineration is unstable, and sudden increase of fly ash particles is easy to occur, so that the cyclone dust collector cannot process the flue gas to an ideal state, and the fly ash particles entering the waste heat boiler are caused to exceed the bearing range of the waste heat boiler.

Therefore, there is a need for a temperature-controlled cyclone dust collector and a garbage incineration treatment and energy utilization system, which can solve the above problems.

Disclosure of Invention

In order to solve the problems, the utility model provides a temperature-control cyclone dust collector, which comprises an inner cylinder body, an outer cylinder body and a cone cylinder body which are sequentially connected up and down;

the inner cylinder body is inserted into the outer cylinder body from the upper part, the lower end of the cone cylinder body is provided with a slag discharging port, the air inlet is arranged substantially tangentially to the circumferential direction of the outer cylinder body, and the upper end of the inner cylinder body is provided with an air outlet;

further comprising a cooling assembly;

the cooling assembly comprises an upper annular water jacket and a lower annular water jacket, the upper annular water jacket and the lower annular water jacket are sleeved on the periphery of the inner cylinder body, and the upper annular water jacket and the lower annular water jacket are arranged at intervals;

the upper annular water jacket and the lower annular water jacket are internally provided with cavities, and are communicated through a plurality of water cooling pipes;

the upper annular water jacket is connected with a cold water inlet pipe, the lower annular water jacket is connected with a cold water outlet pipe, and the cold water inlet pipe and the cold water outlet pipe extend out of the outer cylinder.

Furthermore, the periphery of the inner cylinder body is fixedly provided with a cooling cylinder, and the inner cylinder body and the cooling cylinder are enclosed to form a relatively closed space;

a cooling assembly is mounted within the relatively enclosed space.

Further, a first flange is arranged at the upper end of the inner cylinder body, and a second flange is arranged on the top end surface of the cooling cylinder;

the side wall of the cooling cylinder is also provided with a through hole.

Further, the outer wall of the inner cylinder body is also provided with a positioning convex rib;

correspondingly, the inner edge of the cooling cylinder is provided with a first positioning notch, and the inner edges of the upper annular water jacket and the lower annular water jacket are provided with a second positioning notch.

A garbage incineration treatment and energy utilization system, which uses the temperature-control cyclone dust collector;

the garbage incineration treatment and energy utilization system comprises a garbage incinerator and a waste heat boiler connected with the garbage incinerator;

the side wall of the garbage incinerator is provided with a smoke outlet corresponding to the position, the waste heat boiler is provided with an inlet flue corresponding to the position, and the smoke outlet is connected with the inlet flue;

the device comprises a cyclone dust collector, a flue gas outlet, a waste heat boiler, a slag discharging port, a waste solid recycling end and a waste gas collecting end, wherein the flue gas outlet is communicated with the flue gas outlet of the cyclone dust collector, and the gas outlet is communicated with the inlet flue of the waste heat boiler.

Further, the air outlet of the cyclone dust collector is connected with an inlet flue of the waste heat boiler through a main flue gas pipeline;

the exhaust-heat boiler is connected to the steam turbine through a main steam line, and a steam turbine generator connected to a rotary shaft of the steam turbine is driven by the operation of the steam turbine to generate electricity.

Further, the exhaust gas discharge end of the waste heat boiler is communicated with the chimney through a chimney inlet pipeline.

Further, the downstream of the cyclone dust collector is also provided with a second cyclone dust collector with the same structure, the air outlet of the cyclone dust collector is communicated with the air inlet of the second cyclone dust collector, and the air outlet of the second cyclone dust collector is communicated with the waste heat boiler.

Furthermore, a diverter valve is also arranged on the main smoke pipeline, the outlet end of the diverter valve is provided with a detection chamber, and a smoke particle detection device is arranged in the detection chamber;

the main smoke pipeline is also provided with a branch pipeline, the branch pipeline is positioned at the downstream of the flow dividing valve, and the second cyclone dust removing device is positioned at the branch pipeline;

the main flue gas pipeline is also provided with a first stop valve, and the first stop valve is positioned at the downstream of the branch of the main flue gas pipeline;

the branch pipeline is provided with a second stop valve, and the second stop valve is positioned at the upstream of the second cyclone dust collector.

Compared with the prior art, the utility model has the advantages that:

1. according to the temperature-control cyclone dust collector disclosed by the utility model, cold water enters the upper annular water jacket from the cold water inlet pipe, takes away heat of smoke in the inner cylinder body through the water cooling pipe, enters the lower annular water jacket, is discharged through the cold water discharge pipe, and reduces the temperature of the smoke discharged from the air outlet through circulation of the cold water in the cooling assembly. The temperature of the cooling water is controlled or the flow of the cooling water is regulated, so that the temperature of the flue gas discharged by the cyclone dust collector is regulated.

2. The periphery of the inner cylinder body is also fixedly provided with the cooling cylinder, the inner cylinder body and the cooling cylinder are enclosed to form a relatively closed space, so that the energy loss of the cooling assembly can be reduced, and the installation firmness of the cooling assembly can be ensured.

3. When the cooling assembly is assembled, the positioning ribs are only required to be aligned with the first positioning notch and the second positioning notch respectively, and then the cooling assembly and the outer cylinder body are sleeved into the inner cylinder body. The cooling device can ensure that the cold water inlet pipe and the cold water outlet pipe can be aligned with the through opening of the outer cylinder body and the through opening of the cooling cylinder, and can play a guiding role during installation, so that the assembly is convenient.

4. According to the garbage incineration treatment and energy utilization system, when the condition of sudden increase of fly ash particles occurs, the smoke discharged by the garbage incinerator is subjected to two-stage dust removal treatment, so that the problem that a single cyclone dust removal device cannot treat the smoke to an ideal state and the use of a waste heat boiler is affected is avoided.

5. According to the garbage incineration treatment and energy utilization system, through controlling the flue gas temperature, the flue gas subjected to primary dust removal and the flue gas subjected to secondary dust removal can be matched with the design parameters of the waste heat boiler.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a diagram of a garbage incineration disposal and energy utilization system;

FIG. 2 is a diagram showing the overall structure of the cyclone dust collector;

FIG. 3 is an exploded view of the cyclone dust collector as a whole;

FIG. 4 is an exploded view of a cyclone dust collector temperature control apparatus;

FIG. 5 is a diagram of the inner cylinder structure;

FIG. 6 is a block diagram of a cooling cartridge;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a block diagram of a cooling assembly;

FIG. 9 is a cross-sectional view of a cyclone dust collector;

fig. 10 is a partial enlarged view at B in fig. 9.

In the figure, a garbage incinerator 100, a flue gas outlet 110, a waste heat boiler 200, an inlet flue 210, a cyclone dust collector 300, an air inlet 310, an air outlet 320, a slag discharge port 330, an inner cylinder 340, a first flange 341, a positioning rib 342, an outer cylinder 350, a through port 351, a cone cylinder 360, a cooling assembly 370, an upper annular water jacket 371, a lower annular water jacket 372, a water cooling pipe 373, a cold water inlet pipe 374, a cold water discharge pipe 375, a second positioning notch 376, a cooling cylinder 380, a second flange 381, a through hole 382, a first positioning notch 383, a main flue gas pipeline 410, a diverter valve 411, a first stop valve 412, a main steam pipeline 420, a chimney inlet pipeline 430, a detection chamber 440, a branch pipeline 450, a second stop valve 451, a chimney 500, a steam turbine 600, a steam turbine generator 700, and a second cyclone dust collector 800.

Detailed Description

The present utility model will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

The present embodiment provides a garbage incineration disposal and energy utilization system, as shown in fig. 1, in which a solid line terminated by an arrow indicates a flow direction of gas or liquid and a supply direction of electric power.

The garbage incineration disposal and energy utilization system of the present embodiment includes a garbage incinerator 100 and a waste heat boiler 200 connected to the garbage incinerator 100; the side wall of the garbage incinerator 100 is provided with a smoke outlet 110 corresponding to the position; the waste heat boiler 200 has inlet flues 210 corresponding in position, and the flue gas outlet 110 is connected to the inlet flues 210.

The system for treating garbage and utilizing energy further comprises a cyclone dust collector 300, wherein an air inlet 310 of the cyclone dust collector 300 is communicated with the flue gas outlet 110, an air outlet 320 is communicated with an inlet flue 210 of the waste heat boiler 200, and a slag discharging port 330 at the bottom end of the cyclone dust collector 300 is communicated with a waste solid recovery end.

The cyclone dust collector 300 of the present embodiment is a high-temperature cyclone separator, and has a function of removing large particles, so that the flue gas with the large particles is separated before entering the waste heat boiler through the cyclone dust collector 300, and the lower the content of the flue gas particles in the flue gas passing through the waste heat boiler 200 is, the lower the scouring and corrosion to the waste heat boiler 200 is.

Specifically, the air outlet 320 of the cyclone dust removing apparatus 300 is connected to the inlet flue 210 of the waste heat boiler 200 through a main flue gas pipe 410. Accordingly, the flue gas discharged from the garbage incinerator 100 is supplied to the waste heat boiler 200 through the main flue gas pipe 410 after passing through the cyclone 300, and becomes a heat source for generating steam in the waste heat boiler 200.

In the present embodiment, the exhaust-heat boiler 200 communicates with the steam turbine 600 through the main steam line 420, and the steam turbine generator 700 connected to the rotary shaft of the steam turbine 600 is driven and generates electric power in accordance with the operation of the steam turbine 600. The exhaust gas discharge end of the exhaust-heat boiler 200 communicates with the stack 500 through a stack inlet line 430. Thereby, the flue gas having completed the work in the exhaust-heat boiler 200 is discharged from the stack 500 to the atmosphere through the exhaust gas discharge end of the exhaust-heat boiler 200.

It can be understood that the ideal temperature value of the flue gas discharged from the vertical garbage incinerator 100 of the garbage incineration and energy utilization apparatus is 800-850 degrees, the temperature is attenuated after particles are removed by the cyclone dust collector 300, the temperature of the flue gas at the inlet side of the waste heat boiler 200 is 600-650 degrees, i.e. the design parameters of the heat energy utilization module of the waste heat boiler 200 are matched with 600-650 degrees.

Meanwhile, dust generated by the incineration of the garbage is unstable, and sudden increase of fly ash particles is easy to occur, so that the cyclone dust collector 300 cannot process the flue gas to an ideal state, and the fly ash particles entering the waste heat boiler 200 are caused to exceed the bearing range of the waste heat boiler 200.

In order to eliminate the above problems, in the garbage incineration treatment and energy utilization system according to the present embodiment, a second cyclone dust collector 800 having the same structure is further provided downstream of the cyclone dust collector 300, the air outlet 320 of the cyclone dust collector 300 is communicated with the air inlet 310 of the second cyclone dust collector 800, and the air outlet 320 of the second cyclone dust collector 800 is communicated with the waste heat boiler 200.

Specifically, the main flue gas pipeline 410 is further provided with a diverter valve 411, an outlet end of the diverter valve 411 is provided with a detection chamber 440, and a smoke particle detection device is arranged in the detection chamber 440 so as to extract a small amount of flue gas discharged by the cyclone dust removal device 300 to detect, judge whether the dust content reaches the standard, and the flue gas reaching the standard directly enters the waste heat boiler 200, and enters the second cyclone dust removal device 800 to be processed before the flue gas reaching the standard enters the waste heat boiler 200 after the flue gas is processed.

The main flue gas pipeline 410 is further provided with a branch pipeline 450, the branch pipeline 450 is positioned at the downstream of the flow dividing valve 411, and the second cyclone dust removing device 800 is positioned at the branch pipeline 450; the main flue gas pipeline 410 is further provided with a first stop valve 412, and the first stop valve 412 is positioned at the downstream of the branch of the main flue gas pipeline 410; the branch pipe 450 is provided with a second shut-off valve 451, and the second shut-off valve 451 is located upstream of the second cyclone dust removing device 800.

Thus, when the dust particle detection device detects that the concentration of the smoke and dust discharged from the cyclone dust collection device 300 is lower than a preset threshold value, the first stop valve 412 is opened, and the second stop valve 451 is closed, so that the high-temperature smoke directly enters the inlet flue 220 from the air outlet 320 of the cyclone dust collection device 300; when the smoke particle detection device detects that the concentration of the smoke dust discharged by the cyclone dust removal device 300 is higher than a preset threshold value, the first stop valve 412 is closed, the second stop valve 451 is opened, the smoke is firstly processed by the second cyclone dust removal device 800 through the air outlet 320 of the cyclone dust removal device 300, and then enters the waste heat boiler 200 after being processed.

With the above arrangement, when the condition of sudden increase of fly ash particles occurs, the flue gas discharged from the garbage incinerator 100 is subjected to two-stage dust removal treatment, so that the problem that the single cyclone dust removal device 300 cannot treat the flue gas to an ideal state and the use of the waste heat boiler 200 is affected is avoided.

It should be noted that, after the particles are removed by the cyclone dust removing device 300, the temperature of the flue gas may be attenuated. Therefore, the cyclone dust collector 300 of the present embodiment is a temperature-controlled cyclone separator, and the flue gas temperature of the cyclone dust collector can be controlled to match the design parameters of the waste heat boiler 200 for the flue gas subjected to primary dust collection and the flue gas subjected to secondary dust collection.

Referring to fig. 2-10, the temperature-controlled cyclone dust collector of the present embodiment includes an inner cylinder 340, an outer cylinder 350 and a cone cylinder 360 sequentially connected from top to bottom, wherein the inner cylinder 340 is inserted into the outer cylinder 350 from above, the lower end of the cone cylinder 360 has a slag discharging port 330, the air inlet 310 is substantially tangential to the circumferential direction of the outer cylinder 350, and the upper end of the inner cylinder 340 is provided with an air outlet 320.

It will be appreciated that when the high temperature flue gas enters the outer cylinder 350 from the inlet 310 at a certain velocity, the flow will change from linear motion to circular motion, rotating a substantial portion of the flow, spiraling downwardly from the outer cylinder 350 towards the cone 360. The particles are thrown against the wall by centrifugal force, and once they contact the wall, they lose inertial force, and the momentum of the downward axial velocity near the wall falls along the wall surface into the cone 360. The descending outer cyclone flow continuously flows into the central portion of the outer cylinder 350 during the descending process to form a centripetal radial flow, and the part of the flow is rotated upward into the inner cylinder 340 and discharged from the air outlet 320.

In the present embodiment, a cooling unit 370 is provided on the outer periphery of the inner cylinder 340, and the temperature of the flue gas discharged from the cyclone dust collector 300 is adjusted by the cooling unit 370. Specifically, the cooling assembly 370 includes an upper annular water jacket 371 and a lower annular water jacket 372, the upper annular water jacket 371 and the lower annular water jacket 372 are both sleeved on the outer periphery of the inner cylinder 340, and the upper annular water jacket 371 and the lower annular water jacket 372 are arranged at intervals; the upper annular water jacket 371 and the lower annular water jacket 372 are hollow, and the upper annular water jacket 371 and the lower annular water jacket 372 are communicated through a plurality of water cooling pipes 373.

The upper annular water jacket 371 is connected with a cold water inlet pipe 374, and the lower annular water jacket 372 is connected with a cold water outlet pipe 375; and both the cold water inlet pipe 374 and the cold water outlet pipe 375 extend out of the outer cylinder 350. Accordingly, cold water enters the upper annular water jacket 371 from the cold water inlet pipe 374, takes away heat of the flue gas in the inner cylinder 340 through the water cooling pipe 373, enters the lower annular water jacket 372, is discharged through the cold water discharge pipe 375, and reduces the temperature of the flue gas discharged from the air outlet 320 through circulation of the cold water in the cooling assembly 370. The temperature of the flue gas discharged from the cyclone dust removing apparatus 300 is adjusted by controlling the temperature of the cooling water or adjusting the flow rate of the cooling water.

In this embodiment, the cooling cylinder 380 is further fixedly disposed on the outer periphery of the inner cylinder 340, and the inner cylinder 340 and the cooling cylinder 380 enclose a relatively closed space, so that not only can the energy loss of the cooling assembly 370 be reduced, but also the installation firmness of the cooling assembly 370 can be ensured.

Specifically, the first flange 341 is attached to the upper end of the inner cylinder 340, and the second flange 381 is attached to the top end surface of the cooling cylinder 380, so that the cooling cylinder 380 is fixedly attached to the outer side of the inner cylinder 340 via the first flange 341 and the second flange 381. The side wall of the cooling cylinder 380 is also provided with a through hole 382 so that the cold water inlet pipe 374 and the cold water outlet pipe 375 can extend from the upper annular water jacket 371 and the lower annular water jacket 372, respectively, to the outer cylinder 350.

In this embodiment, in order to ensure that the cold water inlet pipe 374 and the cold water outlet pipe 375 can be aligned with the through hole 351 of the outer cylinder 350 and the through hole 382 of the cooling cylinder 380, the outer wall of the inner cylinder 340 is further provided with a positioning rib 342, correspondingly, the inner edge of the cooling cylinder 380 is provided with a first positioning notch 383, and the inner edges of the upper annular water jacket 371 and the lower annular water jacket 372 are provided with a second positioning notch 376.

Therefore, when the cooling assembly 370 is assembled, the positioning ribs 342 are aligned with the first positioning notch 383 and the second positioning notch 376 respectively, and then the cooling assembly 370 and the outer cylinder 350 are sleeved into the inner cylinder 340. The cold water inlet pipe 374 and the cold water outlet pipe 375 can be aligned with the through opening of the outer cylinder 350 and the through opening 382 of the cooling cylinder 380, and can play a guiding role in installation, so that the assembly is convenient.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (9)

1. A temperature-control cyclone dust collector comprises an inner cylinder body, an outer cylinder body and a cone cylinder body which are sequentially connected up and down;

the inner cylinder body is inserted into the outer cylinder body from the upper part, the lower end of the cone cylinder body is provided with a slag discharging port, the air inlet is arranged substantially tangentially to the circumferential direction of the outer cylinder body, and the upper end of the inner cylinder body is provided with an air outlet;

the device is characterized by further comprising a cooling assembly;

the cooling assembly comprises an upper annular water jacket and a lower annular water jacket, the upper annular water jacket and the lower annular water jacket are sleeved on the periphery of the inner cylinder body, and the upper annular water jacket and the lower annular water jacket are arranged at intervals;

the upper annular water jacket and the lower annular water jacket are internally provided with cavities, and are communicated through a plurality of water cooling pipes;

the upper annular water jacket is connected with a cold water inlet pipe, the lower annular water jacket is connected with a cold water outlet pipe, and the cold water inlet pipe and the cold water outlet pipe extend out of the outer cylinder.

2. The temperature-controlled cyclone dust collector as claimed in claim 1, wherein the outer circumference of the inner cylinder is fixedly provided with a cooling cylinder, and the inner cylinder and the cooling cylinder are enclosed to form a relatively closed space;

a cooling assembly is mounted within the relatively enclosed space.

3. The temperature-controlled cyclone dust collector as claimed in claim 2, wherein the upper end of the inner cylinder is provided with a first flange, and the top end surface of the cooling cylinder is provided with a second flange;

the side wall of the cooling cylinder is also provided with a through hole.

4. A temperature-controlled cyclone dust collector as claimed in claim 2 or 3, wherein the outer wall of the inner cylinder is further provided with a positioning rib;

correspondingly, the inner edge of the cooling cylinder is provided with a first positioning notch, and the inner edges of the upper annular water jacket and the lower annular water jacket are provided with a second positioning notch.

5. A garbage incineration disposal and energy utilization system characterized by using the temperature-controlled cyclone dust collector as claimed in any one of claims 1 to 4;

the garbage incineration treatment and energy utilization system comprises a garbage incinerator and a waste heat boiler connected with the garbage incinerator;

the side wall of the garbage incinerator is provided with a smoke outlet corresponding to the position, the waste heat boiler is provided with an inlet flue corresponding to the position, and the smoke outlet is connected with the inlet flue;

the device comprises a cyclone dust collector, a flue gas outlet, a waste heat boiler, a slag discharging port, a waste solid recycling end and a waste gas collecting end, wherein the flue gas outlet is communicated with the flue gas outlet of the cyclone dust collector, and the gas outlet is communicated with the inlet flue of the waste heat boiler.

6. The system for treating garbage and utilizing energy according to claim 5, wherein the air outlet of the cyclone dust collector is connected with the inlet flue of the waste heat boiler through a main flue gas pipeline;

the exhaust-heat boiler is connected to the steam turbine through a main steam line, and a steam turbine generator connected to a rotary shaft of the steam turbine is driven by the operation of the steam turbine to generate electricity.

7. The system for waste incineration disposal and energy utilization according to claim 5 or 6, wherein the exhaust gas outlet of the waste heat boiler communicates with the chimney through a chimney inlet line.

8. The system for garbage incineration disposal and energy utilization according to claim 5 or 6, wherein a second cyclone dust collector with the same structure is further arranged at the downstream of the cyclone dust collector, the air outlet of the cyclone dust collector is communicated with the air inlet of the second cyclone dust collector, and the air outlet of the second cyclone dust collector is communicated with the waste heat boiler.

9. The system for treating garbage and utilizing energy according to claim 8, wherein the main flue gas pipeline is further provided with a diverter valve, the outlet end of the diverter valve is provided with a detection chamber, and a smoke particle detection device is arranged in the detection chamber;

the main smoke pipeline is also provided with a branch pipeline, the branch pipeline is positioned at the downstream of the flow dividing valve, and the second cyclone dust removing device is positioned at the branch pipeline;

the main flue gas pipeline is also provided with a first stop valve, and the first stop valve is positioned at the downstream of the branch of the main flue gas pipeline;

the branch pipeline is provided with a second stop valve, and the second stop valve is positioned at the upstream of the second cyclone dust collector.