CN203100131U - Coal-fired equipment waste heat utilization and dust removal device - Google Patents

Abstract

The utility model discloses a coal-fired equipment waste heat utilization and dust removal device, which comprises a smoke tube connected with a smoke vent of the coal-fired equipment, a waste heat recovery and utilization device arranged outside the smoke tube, a fan arranged at the outlet part of the smoke tube, a dust removal device communicated with the outlet of the fan and a soot slurry concentration device connected with the drain outlet of the dust removal device; the utility model effectively removes dust particles in the smoke dust and waste gas by using the dust removing device, and ensures that the discharged gas does not pollute the environment; the waste heat recycling device of the utility model fully utilizes the heat of the waste gas in the flue pipe to heat the water in the first water tank into hot water, so as to be reused for boiler combustion or other purposes, thereby realizing the effects of energy conservation and emission reduction; the utility model utilizes the ash slurry concentration device to further concentrate the ash slurry in the water storage barrel, and replenishes the filtered water into the water inlet pipe of the spray device again, so as to achieve the water-saving effect; the utility model discloses need not traditional chimney, reduced the cost.

Description

Coal-fired equipment waste heat utilization and dust removal device

technical field

The utility model relates to a waste heat utilization and dust removal device of coal-fired equipment.

Background technique

At present, many enterprises and factories (such as coal-fired boiler factories, etc.) directly discharge a large amount of soot and waste gas into the atmosphere through chimneys every day. These chimneys generally do not have corresponding dust removal and purification devices, which seriously affect people's daily life and environment while polluting the air. Good health brings many diseases to people, such as respiratory diseases, lung diseases and so on.

Contents of the invention

The purpose of the utility model is to provide a coal-fired equipment waste heat utilization and dust removal device directly connected to the smoke exhaust hole of the coal-fired equipment, which does not need a traditional chimney, reduces the cost, and can effectively remove dust particles in the exhaust gas, and is environmentally friendly and energy-saving .

The technical scheme of the utility model is: a waste heat utilization and dust removal device for coal-fired equipment, including a smoke pipe connected to the smoke exhaust hole of the coal-fired equipment, a waste heat recovery and utilization device arranged outside the smoke pipe, and a waste heat recovery device arranged at the outlet of the smoke pipe The fan, the dust removal device connected to the outlet of the fan, and the soot slurry concentration device connected to the sewage outlet of the dust removal device.

The specific structure of the waste heat recovery and utilization device is as follows: the waste heat recovery and utilization device includes a first water tank arranged outside the first half of the smoke pipe and a second water tank arranged outside the second half of the smoke pipe, and the second water tank is provided for Lead hot water from the upper part of the second water tank into the guide pipe of the first water tank, the upper part of the first water tank is provided with a water outlet conduit, the water outlet conduit is provided with a first water outlet valve, and the bottom of the second water tank is provided with a water inlet Conduit, the water inlet conduit is provided with a first water inlet valve. The water outlet conduit can be connected to the heating boiler used in the combustion of the factory, so that the hot water generated in the first water tank can be fully utilized, and of course the hot water can also be used for other purposes. This design makes full use of the waste heat of the smoke and dust exhaust gas in the flue pipe, thereby achieving the effect of energy saving and emission reduction.

Further, the first water tank and the second water tank are attached together, and the first water tank and the second water tank are provided with insulation covers to prevent the water in the water tanks from cooling down too quickly.

The working principle of the waste heat recovery and utilization device is: when the exhaust gas of the coal-fired equipment passes through the smoke pipe, the water in the first water tank first absorbs a large amount of heat and is heated into hot water, and the water in the second water tank utilizes the exhaust gas in the smoke pipe to The residual heat of the water becomes warm water, because the hotter water will float on the upper part of the second water tank, so the utility model uses a guide tube to guide the hotter water in the upper part of the second water tank into the first water tank, so that the first water tank can compensate for the water outlet conduit due to The lack of water in the tank after the water is exported, and the second water tank can supplement the water intake through the first water inlet valve at the bottom.

The specific structure of the above-mentioned smoke pipe is: in order to make the waste heat recovery and utilization device better utilize the heat of the exhaust gas in the smoke pipe, the smoke pipe includes a tube body arranged in a circuitous manner, and soot channels are connected between the meandering parts at the bottom of the tube body The ports on both sides of the soot channel are respectively provided with soot doors, and the soot channel is respectively provided with an openable middle door between two adjacent zigzag parts at the bottom of the pipe body. The setting of the soot channel, the soot door and the middle door is to facilitate cleaning the soot deposited in the smoke pipe.

The specific structure of the dust removal device is as follows: the dust removal device includes a centrifugal cylinder, the centrifugal cylinder is provided with a first air inlet pipe connected to the outlet of the fan, and there is a coarse filter mesh cylinder in the centrifugal cylinder. There is also a water storage bucket filled with water inside the filter cylinder, the top of the centrifuge cylinder is fixed with an air outlet pipe extending into the water storage bucket, and the upper end of the water storage bucket is provided with a second air inlet and is installed with a second air inlet. The second air inlet pipe extends downwards below the water surface of the water storage bucket, and a number of air outlet holes are opened on the pipe wall of the extension part of the second air inlet pipe below the water surface. The first filter material layer and the second filter material layer arranged at an interval between the upper and lower are arranged above the extension part of the second air inlet pipe below the water surface, and the bottom of the water storage tank is provided with a slurry discharge mechanism, which includes a centrifugal cylinder The slurry discharge pipe, the auger located in the slurry discharge pipe, the transmission sprocket that drives the auger to rotate, and the first motor that drives the transmission sprocket to rotate, the sewage outlet of the slurry discharge pipe transmits the wet soot slurry through the sewage discharge pipe To the soot slurry thickener.

In order to facilitate the cleaning of dry dust in the centrifugal cylinder, the bottom of the centrifugal cylinder is in the shape of a funnel, the bottom of the funnel is provided with an ash-falling port, and an ash-collecting box is provided outside the ash-falling port. In order to increase the exhaust area, the end of the air outlet pipe is preferably bell-shaped.

In order to make the dust adsorbed by the first filter material layer and the second filter material layer fall back into the water, a spray device is provided in the water storage bucket, and the spray device includes the first filter material layer and the first filter material layer respectively. The spray pipe between the filter material layer and the second filter material layer, several nozzles arranged on the spray pipe, the water pipes connected with the above two spray pipes and extending out of the water storage bucket and the centrifugal cylinder, the water pipes pass through the water pump Connect the water inlet pipe.

The working principle of the dust removal device is as follows: the exhaust gas in the flue pipe enters the centrifuge cylinder through the first air inlet pipe, and the coarse ash filtered out by the coarse filter screen cylinder falls along the funnel opening at the bottom of the centrifuge cylinder, and is finally discharged from the ash falling port and Falls into the ash collection box, while the exhaust gas containing fine ash enters the water storage tank through the second air inlet pipe, and forms clean gas after being filtered by water, the second filter material layer and the first filter material layer, and finally flows from the outlet The wet soot slurry deposited at the bottom of the water storage tank is discharged from the air duct, and the wet soot slurry is sent to the soot slurry concentration device through the slurry discharge mechanism and the sewage pipe.

The specific structure of the above soot slurry concentration device is as follows: the soot slurry concentration device includes a soot slurry tank, a soot slurry sedimentation tank, a rolling screen arranged on the top of the soot slurry tank and the sewage outlet is located above the soot slurry sedimentation tank, and a driving rolling screen The second motor that rotates, the end of the sewage pipe extends into the above-mentioned rolling screen, the upper part of the soot slurry pool is provided with a sieve plate that is inclined and guides the soot slurry sedimentation tank, and the soot slurry pool is provided with a sieve plate below the sieve plate The clean water outlet and several layers of filters are set outside the clean water outlet. The bottom of the soot slurry tank is provided with a sewage return pipe leading to the rolling screen and a mud pump for pulling out the sludge and sending it into the rolling screen. The sewage return pipe is provided with a sewage return valve near the sludge outlet of the soot slurry tank, and a sewage discharge valve is provided at the bottom of the soot slurry sedimentation tank.

Further, the clear water outlet of the soot slurry tank is connected with the water inlet pipe of the spraying device through the water outlet pipe, and the second water outlet valve is provided on the water outlet pipe. In this way, the filtered clear water and tap water can enter the spraying device together, which has an energy-saving effect.

The working principle of the soot slurry concentration device is: the sewage pipe transfers the wet soot slurry deposited at the bottom of the water storage tank to the rolling sieve, and when the rolling sieve rolls, the relatively thin muddy water filtered falls from the rolling sieve into the sieve plate and After being filtered again by the sieve plate, it falls into the soot slurry tank, while the thicker mud in the rolling screen and the coarse mud filtered out of the sieve plate fall into the soot slurry sedimentation tank for sedimentation. And the muddy water in the soot slurry pool is also divided into upper clear water and lower mud after self-precipitation. The clearer water can flow into the water inlet pipe of the shower device from the water outlet pipe through the second water outlet valve after being filtered by the multi-layer filter screen again, so as to enter the shower device together with tap water for spraying operation. The mud at the bottom of the soot slurry tank enters the rolling screen through the sewage return valve, mud pump and sewage return pipe for re-filtering.

The utility model has the advantages of:

1. The utility model is directly connected to the smoke exhaust hole of the coal-fired equipment, without the need for a traditional chimney, which reduces the cost, and at the same time can effectively remove dust particles in the exhaust gas and is environmentally friendly and energy-saving.

, The utility model is equipped with a waste heat recovery and utilization device outside the smoke pipe to make full use of the heat of the exhaust gas in the smoke pipe to heat the water in the first water tank into hot water so that it can be reused for boiler water or other purposes, thereby realizing energy saving and emission reduction role.

, The utility model is equipped with a dust removal device at the outlet of the fan, and the dust removal device firstly filters the smoke pipe exhaust gas through the coarse filter screen cylinder, and then introduces the preliminary filtered exhaust gas into the water through the second air inlet pipe, and utilizes the water The fine ash is removed by adsorption and ash removal, and then the clean gas is formed through the filtration of the first filter material layer and the second filter material layer, and finally discharged into the atmosphere through the air outlet pipe, which greatly improves the dust collection ability and effectively The dust particles in the smoke and dust exhaust gas are removed, ensuring that the exhaust gas will not pollute the environment.

, The utility model is equipped with a soot slurry concentrating device connected with the sewage outlet of the dust removal device. Water effect, and the sludge formed by the final sedimentation of the soot slurry sedimentation tank can also be taken out from its sewage valve for landfill or other purposes.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the sectional view of the main structure of the waste heat recycling device in the utility model;

Fig. 2 is the sectional view of the main structure of the dust removal device in the utility model;

Fig. 3 is a sectional view of an embodiment at the A-A place of Fig. 2;

Fig. 4 is a cross-sectional schematic view of the slurry discharge pipe and the screw auger in the slurry discharge mechanism;

Fig. 5 is a sectional view of the main structure of the soot slurry thickening device in the present invention.

Among them: 10 smoke pipe; 11 pipe body; 12 soot passage; 13 soot door; 14 middle door; 15 fan;

20 waste heat recycling device; 21 first water tank; 22 second water tank; 23 diversion pipe; 24 outlet conduit; 25 first outlet valve; 26 inlet conduit; 27 first inlet valve; 28 heat preservation cover;

30 dust removal device; 31 centrifugal cylinder; 32 first air inlet pipe; 33 coarse filter screen cylinder; 34 water storage bucket; 35 air outlet pipe; 36 second air inlet; 37 second air inlet pipe; 371 air outlet; Filter material layer; 39 second filter material layer; 310 slurry discharge mechanism; 311 slurry discharge pipe; 312 screw auger; 313 transmission sprocket; 314 first motor; 318 nozzle; 319 water pipe; 320 water pump; 321 water inlet pipe; 322 ash outlet; 323 ash collection box;

40 soot slurry concentration device; 41 soot slurry tank; 42 soot slurry sedimentation tank; 43 rolling screen; 44 second motor; Valve; 411 sewage valve; 412 outlet pipe; 413 second outlet valve.

Detailed ways

Embodiment: As shown in Figures 1 to 5, a coal-fired equipment waste heat utilization and dust removal device includes a smoke pipe 10 connected to the smoke exhaust hole of the coal-fired equipment, and a waste heat recovery and utilization device 20 arranged outside the smoke pipe 10 , the fan 15 arranged at the outlet of the smoke pipe 10 , the dust removal device connected to the outlet of the fan 15 , and the soot slurry concentration device 40 connected to the sewage outlet of the dust removal device 30 .

As shown in FIG. 1 , the specific structure of the waste heat recovery device 20 is as follows: the waste heat recovery device 20 includes a first water tank 21 arranged outside the first half of the smoke pipe 10 and a first water tank 21 arranged outside the second half of the smoke pipe 10 . Two water tanks 22, the second water tank 22 is provided with a guide pipe 23 for leading hot water from the top of the second water tank 22 into the first water tank 21, and the top of the first water tank 21 is provided with a water outlet conduit 24, the water outlet conduit 24 A first water outlet valve 25 is arranged on the top, and a water inlet conduit 26 is arranged on the bottom of the second water tank 22 , and a first water inlet valve 27 is arranged on the water inlet conduit 26 . The water outlet conduit 24 can be connected to the heating boiler used in the combustion of the factory, so that the hot water produced in the first water tank can be fully utilized, and of course the hot water can also be used for other purposes. Such a design makes full use of the waste heat of the smoke and dust exhaust gas in the smoke pipe 10, thereby achieving the effect of energy saving and emission reduction.

Further, in this embodiment, the first water tank 21 and the second water tank 22 are attached together, and the first water tank 21 and the second water tank 22 are covered with a heat preservation cover 28, so as to prevent the water in the water tank from being too fast. cool down.

The working principle of the waste heat recovery and utilization device 20 is: when the exhaust gas from the coal-fired equipment passes through the smoke pipe 20, the water in the first water tank 21 first absorbs a large amount of heat and is heated into hot water, while the water in the second water tank 22 Use the waste heat of the exhaust gas in the smoke pipe to turn it into warm water. Since the hotter water will float on the upper part of the second water tank 22, the utility model uses the guide tube 23 to guide the hotter water on the upper part of the second water tank 22 into the first water tank 21. So that the first water tank 21 makes up for the lack of water in the tank after the water outlet conduit 24 is exported, and the second water tank 22 can supplement the water intake through the first water inlet valve 27 at the bottom.

The specific structure of the above-mentioned smoke pipe 10 is: in order to make the waste heat recovery and utilization device better utilize the heat of the exhaust gas in the smoke pipe 10, the smoke pipe 10 includes a tube body 11 arranged in a circuitous manner, and the meandering parts at the bottom of the tube body 11 There is a soot channel 12 connected between them, and the ports on both sides of the soot channel 12 are respectively provided with soot doors 13, and the soot channel 12 is respectively provided with an openable middle door 14 between the two adjacent zigzag parts at the bottom of the pipe body 11. . The setting of the soot channel 12 , the soot door 13 and the middle door 14 is to facilitate cleaning the soot deposited in the smoke pipe 10 .

As shown in Figures 2 to 4, the specific structure of the dust removal device 30 is as follows: the dust removal device 30 includes a centrifugal cylinder 31, and the centrifugal cylinder 31 is provided with a first air inlet pipe 32 connected to the outlet of the fan 15, so There is a coarse filter screen cylinder 33 in the centrifugal cylinder 31 described above, and a water storage bucket 34 filled with water is also arranged in the coarse filter screen cylinder 33. The top of the centrifugal cylinder 31 is fixed with an outlet extending into the water storage bucket 34 An air duct 35, the upper end of the water storage bucket 34 is provided with a second air inlet 36 and a second air intake pipe 37 is installed, and the second air inlet pipe 37 extends downwards below the water surface of the water storage bucket 34, and the second The air inlet pipe 37 has some air outlet holes 371 on the pipe wall of the extending part below the water surface. A filter material layer 38 and a second filter material layer 39, the bottom of the water storage bucket 34 is provided with a slurry discharge mechanism 310, and the slurry discharge mechanism 310 includes a slurry discharge pipe 311 extending out of the centrifugal cylinder 31, a discharge pipe 311 located in the slurry discharge pipe 311 The screw auger 312, the transmission sprocket 313 that drives the screw auger 312 to rotate, and the first motor 314 that drives the transmission sprocket 313 to rotate, the sewage outlet of the slurry discharge pipe 311 transmits the wet soot slurry to the soot slurry through the sewage discharge pipe 315 Concentrator 40.

In this embodiment, as shown in FIG. 3 , the second air inlet pipe 37 at the upper end of the water storage bucket 34 is preferably vertically downward along the cylinder wall of the water storage bucket 34 , bent at the middle of the water and extending horizontally to form a spiral shape. . Of course, under the condition of meeting the purpose of the present utility model, other shapes can also be used, such as a spiral or more than one spiral or a rectangular shape.

In order to facilitate the cleaning of dry dust in the centrifugal cylinder 31 , the bottom of the centrifugal cylinder 31 is funnel-shaped, and the bottom of the funnel is provided with an ash drop opening 322 , and an ash collection box 323 is arranged outside the ash drop opening 322 . In order to increase the exhaust area, the end of the air outlet pipe 35 is preferably bell-shaped.

In order to make the dust adsorbed by the first filter material layer 38 and the second filter material layer 39 fall back into the water, a spray device 316 is provided in the water storage bucket 34, and the spray device 316 includes The shower pipe 317 above the layer 38 and between the first filter material layer 38 and the second filter material layer 39, several shower heads 318 arranged on the shower pipe 317, communicate with the above-mentioned two shower pipes 317 and extend out of the storage tank. The water pipe 319 of the bucket 34 and the centrifugal cylinder 31 is connected to the water inlet pipe 321 through the water pump 320 . The first filter material layer 38 and the second filter material layer 39 can be sponge, multi-layer gauze or tight metal wire mesh.

The working principle of the dust removal device 30 is: the waste gas in the smoke pipe 10 enters the centrifuge cylinder 31 through the first air inlet pipe 32, and the coarse ash filtered out by the coarse filter screen cylinder 33 falls along the funnel mouth at the bottom of the centrifuge cylinder 31, Finally, it is discharged from the ash outlet 322 and falls into the ash collection box 323, while the waste gas containing fine ash enters the water storage bucket 34 through the second air inlet pipe 36, and passes through the water, the second filter material layer 39 and the first filter material. Clean gas is formed after the filtration of the layer 38, and finally discharged from the air outlet pipe 35, and the wet soot slurry deposited at the bottom of the water storage tank 34 is sent to the soot slurry concentration device 40 through the slurry discharge mechanism 310 and the sewage pipe 315.

As shown in Figure 5, the specific structure of the above-mentioned soot slurry concentration device 40 is as follows: the soot slurry concentration device 40 includes a soot slurry pool 41, a soot slurry sedimentation tank 42, is arranged on the top of the soot slurry pool 41 and the sewage outlet is located in the soot slurry The rolling screen 43 above the sedimentation tank 42 and the second motor 44 that drives the rolling screen 43 to rotate, the end of the sewage discharge pipe 315 extends into the above-mentioned rolling screen 43, and the upper part of the soot slurry pool 41 is provided with an inclined setting and a guide The sieve plate 45 of the soot slurry settling tank 42, the soot slurry pool 41 is provided with a clear water outlet 46 and several layers of filter screens 47 outside the clear water outlet 46 below the sieve plate 45, and the bottom of the soot slurry pool 41 is provided with The sewage return pipe 48 leading to the rolling screen 43 and the mud pump 49 used to extract the sludge and send it to the rolling screen 43. The sewage return pipe 48 is provided with a sewage return valve 410 near the sludge outlet of the soot slurry pool 41 , The bottom of the soot slurry sedimentation tank 42 is provided with a blowdown valve 411 .

Further, the clean water outlet 46 of the soot slurry pool 41 communicates with the water inlet pipe 321 of the spraying device 316 through the water outlet pipe 412 , and the second water outlet valve 413 is provided on the water outlet pipe 412 . In this way, the filtered clear water and tap water can enter the spraying device together, which has an energy-saving effect.

The working principle of the soot slurry concentrating device 40 is as follows: the sewage pipe 315 transfers the wet soot slurry deposited at the bottom of the water storage tank 34 to the rolling sieve 43, and when the rolling sieve 43 rolls, relatively thin muddy water is filtered out from the rolling sieve 43 falls into the sieve plate 45 and falls into the soot slurry tank 41 after being filtered again by the sieve plate 45, and the thicker mud in the rolling sieve 43 and the coarse marl filtered on the sieve plate 45 fall into the soot slurry sedimentation tank 42 respectively. for precipitation. And the muddy water in the soot slurry pool 41 is also divided into upper clearer water and lower part mud after self-precipitation. The clearer water can flow into the water inlet pipe 321 of the shower device 316 from the outlet pipe 412 through the second water outlet valve 413 after being filtered by the multi-layer filter screen 47, so as to enter the shower device 316 together with the tap water for spraying operation . And the mud at the bottom of the soot slurry pool 41 enters the rolling screen 43 through the sewage return valve 410, the mud pump 49 and the sewage return pipe 48 to be filtered again.

The utility model is directly connected with the smoke exhaust hole of the coal-burning equipment, does not need a traditional chimney, reduces the cost, and can effectively remove dust particles in the exhaust gas, and is environmentally friendly and energy-saving.

The above are only specific application examples of the utility model, and do not constitute any limitation to the protection scope of the utility model. In addition to the above-mentioned embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the utility model.

Claims (9)

1. A waste heat utilization and dust removal device for coal-fired equipment, characterized in that it includes a smoke pipe (10) connected to the smoke exhaust hole of the coal-fired equipment, and a waste heat recovery and utilization device (20) arranged outside the smoke pipe (10) , a fan (15) arranged at the outlet of the smoke pipe (10), a dust removal device (30) connected to the outlet of the fan (15), and a soot slurry concentration device (40) connected to the sewage outlet of the dust removal device (30). 2. A coal-burning equipment waste heat utilization and dust removal device according to claim 1, characterized in that: the waste heat recovery and utilization device (20) includes a first water tank (21) arranged outside the first half of the smoke pipe (10) ) and the second water tank (22) arranged outside the second half of the smoke pipe (10). The guide pipe (23), the upper part of the first water tank (21) is provided with a water outlet conduit (24), the water outlet conduit (24) is provided with a first water outlet valve (25), and the second water tank (22) The bottom of the water inlet conduit (26) is provided with a first water inlet valve (27) on the water inlet conduit (26). 3. A coal-fired equipment waste heat utilization and dust removal device according to claim 2, characterized in that: the first water tank (21) and the second water tank (22) are attached together, the first water tank ( 21) and the second water tank (22) outer jacket is provided with insulation cover (28). 4. A coal-burning equipment waste heat utilization and dust removal device according to claim 1 or 2, characterized in that: the smoke pipe (10) includes a circuitously arranged pipe body (11), and the pipe body (11) There are soot channels (12) connected between the zigzag parts at the bottom, and the ports on both sides of the soot channels (12) are respectively provided with soot doors (13). An openable middle door (14) is respectively separated between the two zigzag parts. 5. A coal-burning equipment waste heat utilization and dust removal device according to claim 1 or 2, characterized in that: the dust removal device (30) includes a centrifugal cylinder (31), and the centrifugal cylinder (31) is equipped with the The first air inlet pipe (32) connected to the outlet of the fan (15), the centrifugal cylinder (31) has a coarse filter cylinder (33), and the coarse filter cylinder (33) is also provided with an inner A water storage bucket (34) filled with water, the top of the centrifugal cylinder (31) is fixed with an air outlet pipe (35) extending into the water storage bucket (34), and the upper end of the water storage bucket (34) is provided with a second air inlet (36) and a second air inlet pipe (37) is installed, the second air inlet pipe (37) extends downwards below the water surface of the water storage bucket (34), and the second air inlet pipe (37) is on the water surface A number of air outlet holes (371) are opened on the pipe wall of the extension part below, and the water storage bucket (34) is provided with upper and lower intervals above the extension part of the second air inlet pipe (37) below the water surface. A filter material layer (38) and a second filter material layer (39), the bottom of the water storage bucket (34) is provided with a pulp discharge mechanism (310), and the pulp discharge mechanism (310) includes a The slurry discharge pipe (311), the auger (312) located in the slurry discharge pipe (311), the transmission sprocket (313) that drives the auger (312) to rotate and the first drive sprocket (313) to rotate The motor (314), the sewage discharge port of the slurry discharge pipe (311) transmits the wet soot slurry to the soot slurry concentration device (40) through the sewage discharge pipe (315). 6. A coal-fired equipment waste heat utilization and dust removal device according to claim 5, characterized in that: the water storage bucket (34) is provided with a spray device (316), and the spray device (316) includes respectively The shower pipe (317) arranged above the first filter material layer (38) and between the first filter material layer (38) and the second filter material layer (39), and several spray pipes (317) A spray head (318), a water pipe (319) connected with the above two spray pipes (317) and extending out of the water storage bucket (34) and the centrifugal cylinder (31), the water pipe (319) is connected to the water inlet pipe through the water pump (320) (321). 7. A coal-burning equipment waste heat utilization and dust removal device according to claim 5, characterized in that: the bottom of the centrifugal cylinder (31) is funnel-shaped, and the bottom of the funnel is provided with an ash drop port (322), and the ash drop An ash collection box (323) is arranged outside the mouth (322). 8. A coal-fired equipment waste heat utilization and dust removal device according to claim 6, characterized in that: the soot slurry concentration device (40) includes a soot slurry pool (41), a soot slurry sedimentation tank (42), a set The rolling screen (43) on the top of the soot slurry tank (41) and the sewage outlet is located above the soot slurry sedimentation tank (42), and the second motor (44) that drives the rolling screen (43) to rotate. The sewage pipe (315 ) extends into the above-mentioned rolling screen (43), and the upper part of the soot slurry pool (41) is provided with a sieve plate (45) which is inclined and guides the soot slurry sedimentation tank (42), and the soot slurry pool (41) is in The bottom of the sieve plate (45) is provided with a clear water outlet (46) and several layers of filter screens (47) outside the clear water outlet (46), and the bottom of the soot slurry pool (41) is provided with a rolling screen ( 43), the sewage return pipe (48) and the mud pump (49) used to extract the sludge and send it to the rolling screen (43), the sewage return pipe (48) is close to the sludge outlet of the soot slurry pool (41) A sewage return valve (410) is provided at the place, and a sewage discharge valve (411) is provided at the bottom of the soot slurry sedimentation tank (42). 9. A coal-burning equipment waste heat utilization and dust removal device according to claim 8, characterized in that: the clear water outlet (46) of the soot slurry pool (41) passes through the water outlet pipe (412) and the spray device (316) ) connected to the water inlet pipe (321), and the water outlet pipe (412) is provided with a second water outlet valve (413).

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