CN209840141U

CN209840141U - Coal fired boiler flue gas waste heat recoverer

Info

Publication number: CN209840141U
Application number: CN201821641926.9U
Authority: CN
Inventors: 雷云永; 靳文杰
Original assignee: Kaifeng City Jinsheng Thermal Co Ltd
Current assignee: Kaifeng City Jinsheng Thermal Co Ltd
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2019-12-24
Anticipated expiration: 2028-10-10

Abstract

The utility model discloses a coal fired boiler flue gas waste heat recoverer, including the recoverer body, its characterized in that: the waste recycling device is characterized in that a transition chamber is arranged in the recycling device body, a drying descaling chamber, an isolation chamber and a cooling chamber are arranged below the transition chamber, a transverse plate is arranged at the bottom of the transition chamber, a first isolation plate is arranged between the drying descaling chamber and the isolation chamber in a connected mode, a second isolation plate is arranged between the isolation chamber and the cooling chamber in a connected mode, a heat conduction pipe is arranged in the transition chamber, one end of the heat conduction pipe penetrates through the transverse plate to be communicated with the drying descaling chamber, an active carbon filtering layer is arranged in the drying descaling chamber, a descaling layer is arranged below the active carbon filtering layer, an exhaust fan is arranged at the bottom of the isolation chamber, an air guide pipe is arranged at the bottom of the drying descaling chamber, an air supply pipe is arranged at the outlet of the exhaust. The utility model discloses simple structure, convenient operation, flue gas waste heat recovery efficiency is high.

Description

Coal fired boiler flue gas waste heat recoverer

Technical Field

The utility model relates to a coal fired boiler technical device technical field specifically indicates a coal fired boiler flue gas waste heat recoverer.

Background

Most of present coal fired boiler flue gas waste heat recoverers utilize water to carry out the heat exchange, and structure and function are comparatively single, cause the water extravagant on the one hand, and on the other hand running cost is higher, and the harmful substance in the current coal fired boiler flue gas waste heat recovery device can not the filtering flue gas, and partial flue gas exhaust air to contaminated air, duty cycle is longer, and purification dynamics and inefficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main objective is to solve the not enough of prior art, provides a simple structure, coal fired boiler flue gas waste heat recoverer that convenient operation is efficient.

In order to solve the technical problem, the utility model provides a technical scheme does: a coal-fired boiler flue gas waste heat recoverer comprises a recoverer body with a hollow shell structure, wherein a transition chamber is arranged in the recoverer body, a drying descaling chamber, an isolation chamber and a cooling temperature reduction chamber are arranged below the transition chamber, a transverse plate with an isolation effect is arranged at the bottom of the transition chamber, a first isolation plate with an isolation effect is connected between the drying descaling chamber and the isolation chamber, a second isolation plate with an isolation effect is connected between the isolation chamber and the cooling temperature reduction chamber, a heat conduction pipe which is distributed in a bending manner is arranged in the transition chamber, one end of the heat conduction pipe extends out of the top of the recoverer body and is connected with a flue outlet of a coal-fired boiler, the other end of the heat conduction pipe penetrates through the transverse plate to be communicated with the drying descaling chamber, an active carbon filter layer is arranged in the drying descaling chamber, a descaling layer is arranged, the bottom of the drying descaling room is provided with an air guide pipe connected with an exhaust fan, the outlet of the exhaust fan is connected with an air supply pipe communicated with the cooling and cooling room, the top of the cooling and cooling room is provided with a transverse water spraying pipe, the bottom of the cooling and cooling room is provided with a water storage room, the bottom of the water storage room is provided with a water outlet pipe extending out of the side wall of the recoverer body, and the side wall of the cooling and cooling room is provided with an exhaust pipe communicated with the outside.

As an improvement, an air inlet pipe extending out of the recoverer body is arranged on the side wall of the transition chamber, and an air outlet pipe extending out of the recoverer body and connected with the bottom of the coal-fired boiler is arranged on the transition chamber.

As an improvement, the recoverer body, the transverse plate, the first isolation plate and the second isolation plate are made of heat insulation materials.

As an improvement, a descaling agent is arranged in the descaling layer.

As an improvement, a water inlet of the water spraying pipe extends out of the side wall of the recoverer body to be connected with a water source, and atomizing nozzles are uniformly arranged at the bottom of the water spraying pipe.

As an improvement, the top of the water storage chamber is provided with a filtering screen with an isolating and filtering function.

As an improvement, the horizontal height of the exhaust pipe is positioned between the water spraying pipe and the water storage chamber, and a filter screen is arranged in the exhaust pipe.

As an improvement, the side wall of the cooling and cooling chamber is provided with a humidity sensor.

As an improvement, a valve is arranged on the water outlet pipe.

Compared with the prior art, the utility model the advantage lie in: because of the curved distribution of the heat conducting pipe, the flue gas discharged by the coal-fired boiler heats the air entering the transition chamber from the air inlet pipe through the heat conducting pipe, the heated air can effectively improve the combustion efficiency when being sent to the bottom furnace of the coal-fired boiler through the air outlet pipe, the energy utilization rate is improved, meanwhile, the energy is saved, the flue gas enters the drying descaling chamber through the heat conducting pipe, the active carbon filter layer and the descaling layer can filter the water and dust impurities in the flue gas, the purified flue gas enters the cooling and cooling chamber through the exhaust fan, the fog sprayed by the water spraying pipe can cool and absorb the flue gas, and then the flue gas is discharged through the exhaust pipe, the pollution to the environment is effectively reduced, meanwhile, the water sprayed by the water spraying pipe enters the water storage chamber through the filtration of the filter screen and is recycled by the water outlet pipe, the water resource is saved, the recoverer body, the transverse plate, the first isolation plate and the second isolation plate are made of heat insulation, the utilization ratio of the energy is improved, and the humidity inside the cooling and cooling chamber can be observed in real time through the arrangement of the humidity sensor, so that the spraying efficiency of the water spraying pipe is reasonably adjusted.

Drawings

FIG. 1 is a schematic structural view of a flue gas waste heat recovery device of a coal-fired boiler of the present invention.

As shown in the figure: 1. the device comprises a recoverer body, 2, a transition chamber, 3, a drying descaling chamber, 4, an isolation chamber, 5, a cooling chamber, 6, a transverse plate, 7, a first isolation plate, 8, a second isolation plate, 9, a heat conduction pipe, 10, an air inlet pipe, 11, an air outlet pipe, 12, an active carbon filtering layer, 13, a descaling layer, 14, an air guide pipe, 15, an exhaust fan, 16, an air supply pipe, 17, a water spraying pipe, 18, an atomizing nozzle, 19, a filtering screen, 20, a water storage chamber, 21, a water outlet pipe, 22, an exhaust pipe, 23, a humidity sensor, 24, a filtering screen, 25 and a descaling agent.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With the attached drawing, the coal-fired boiler flue gas waste heat recoverer comprises a recoverer body 1 with a hollow shell structure, wherein a transition chamber 2 is arranged in the recoverer body 1, a drying descaling chamber 3, an isolation chamber 4 and a cooling temperature reduction chamber 5 are arranged below the transition chamber 2, a transverse plate 6 with an isolation effect is arranged at the bottom of the transition chamber 2, a first isolation plate 7 with an isolation effect is connected between the drying descaling chamber 3 and the isolation chamber 4, a second isolation plate 8 with an isolation effect is connected between the isolation chamber 4 and the cooling temperature reduction chamber 5, a heat conduction pipe 9 which is distributed in a bending manner is arranged in the transition chamber 2, one end of the heat conduction pipe 9 extends out of the top of the recoverer body 1 and is connected with a flue outlet of a coal-fired boiler, the other end of the heat conduction pipe 9 penetrates through the transverse plate 6 to be communicated with the drying descaling chamber 3, and, the active carbon filter layer 12 below is equipped with scale removal layer 13, isolation chamber 4 bottom is equipped with air exhauster 15, dry descaling room 3 bottom is equipped with the guide duct 14 that connects with air exhauster 15, air exhauster 15 exit is connected and is equipped with and is connected communicating blast pipe 16 with cooling room 5, cooling room 5 top is equipped with horizontal trickle pipe 17, cooling room 5 bottom is equipped with reservoir chamber 20, reservoir chamber 20 bottom is equipped with the outlet pipe 21 that stretches out recoverer body 1 lateral wall, be equipped with on the cooling room 5 lateral wall with the communicating exhaust pipe 22 in the external world.

An air inlet pipe 10 extending out of the recoverer body 1 is arranged on the side wall of the transition chamber 2, and an air outlet pipe 11 extending out of the recoverer body 1 and connected with the bottom of the coal-fired boiler is arranged on the transition chamber 2.

The recoverer body 1, the transverse plate 6, the first isolation plate 7 and the second isolation plate 8 are made of heat insulation materials.

The descaling layer 13 is internally provided with a descaling agent 25.

The water inlet of the water spraying pipe 17 extends out of the side wall of the recoverer body 1 to be connected with a water source, and the bottom of the water spraying pipe 17 is uniformly provided with atomizing nozzles 18.

The top of the water storage chamber 20 is provided with a filtering screen 19 for isolation and filtration.

The horizontal height of the exhaust pipe 22 is located between the water spraying pipe 17 and the water storage chamber 20, and a filter screen 24 is arranged in the exhaust pipe 22.

The side wall of the cooling and cooling chamber 5 is provided with a humidity sensor 23.

And a valve is arranged on the water outlet pipe 21.

When the utility model is implemented, because of the curved distribution of the heat conduction pipe 9, the flue gas discharged by the coal-fired boiler heats the air entering the transition chamber 2 from the air inlet pipe 10 through the heat conduction pipe 9, the combustion efficiency can be effectively improved when the heated air is sent to the bottom furnace of the coal-fired boiler through the air outlet pipe 11, the energy utilization rate is improved, the energy is saved, the flue gas enters the drying descaling chamber 3 through the heat conduction pipe 9, the active carbon filter layer 12 and the descaling layer 13 can filter the water and dust impurities in the flue gas, the purified flue gas enters the cooling and cooling chamber 5 through the exhaust fan 15, the fog sprayed by the water spraying pipe 17 can cool and absorb the flue gas, then the flue gas is discharged through the exhaust pipe 22, the environmental pollution is effectively reduced, meanwhile, the water sprayed by the water spraying pipe 17 enters the water storage chamber 20 through the filtration of the filter screen 19 and then is recycled by the water outlet pipe, the water resource has been practiced thrift, and recoverer body 1, diaphragm 6, division board 7 and division board two 8 can completely cut off the temperature influence between each room for setting up of thermal-insulated material, improve the utilization ratio of the energy, and the inside humidity of cooling greenhouse 5 can be observed in real time in setting up of humidity transducer 23 to the efficiency of the 17 spraying of reasonable adjustment trickle pipe.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a coal fired boiler flue gas waste heat recoverer, includes hollow shell structure's recoverer body (1), its characterized in that: a transition chamber (2) is arranged in the recoverer body (1), a drying descaling chamber (3), an isolation chamber (4) and a cooling chamber (5) are arranged below the transition chamber (2), a transverse plate (6) with an isolation effect is arranged at the bottom of the transition chamber (2), a first isolation plate (7) with an isolation effect is connected and arranged between the drying descaling chamber (3) and the isolation chamber (4), a second isolation plate (8) with an isolation effect is connected and arranged between the isolation chamber (4) and the cooling chamber (5), a heat conduction pipe (9) which is distributed in a bending manner is arranged in the transition chamber (2), one end of the heat conduction pipe (9) extends out of the top of the recoverer body (1) and is connected with a smoke outlet of a coal-fired boiler, the other end of the heat conduction pipe (9) penetrates through the transverse plate (6) to be communicated with the drying descaling chamber (3), an active carbon filter layer (12) is arranged in the drying descaling chamber, the activated carbon filter layer (12) below is equipped with scale removal layer (13), isolation room (4) bottom is equipped with air exhauster (15), dry scale removal room (3) bottom is equipped with guide duct (14) that meet with air exhauster (15), air exhauster (15) exit is connected and is equipped with and is connected communicating blast pipe (16) with cooling room (5), cooling room (5) top is equipped with horizontal trickle pipe (17), cooling room (5) bottom is equipped with reservoir chamber (20), reservoir chamber (20) bottom is equipped with outlet pipe (21) that stretch out recoverer body (1) lateral wall, be equipped with on cooling room (5) lateral wall with external communicating exhaust pipe (22).

2. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: an air inlet pipe (10) extending out of the recoverer body (1) is arranged on the side wall of the transition chamber (2), and an air outlet pipe (11) extending out of the recoverer body (1) and connected with the bottom of the coal-fired boiler is arranged on the transition chamber (2).

3. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: the recoverer body (1), the transverse plate (6), the first isolation plate (7) and the second isolation plate (8) are made of heat insulation materials.

4. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: a scale remover (25) is arranged in the scale removing layer (13).

5. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: the water inlet of the water spraying pipe (17) extends out of the side wall of the recoverer body (1) to be connected with a water source, and atomizing nozzles (18) are uniformly arranged at the bottom of the water spraying pipe (17).

6. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: the top of the water storage chamber (20) is provided with a filtering screen (19) which plays a role in isolation and filtration.

7. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: exhaust pipe (22) level is located between spray pipe (17) and reservoir chamber (20), be equipped with filter screen (24) in exhaust pipe (22).

8. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: and a humidity sensor (23) is arranged on the side wall of the cooling and cooling chamber (5).

9. The coal-fired boiler flue gas waste heat recoverer of claim 1, wherein: and a valve is arranged on the water outlet pipe (21).