High-alkali coal circulating fluidized bed anti-slagging boiler based on flow state regulation and control

Abstract

The utility model relates to the technical field of boilers, in particular to a high-alkali coal circulating fluidized bed anti-slagging boiler based on flow regime regulation and control, which comprises a bottom plate and a boiler body fixedly mounted on the bottom plate, the surface of the boiler body is fixedly connected with a smoke exhaust pipeline, the upper surface of the bottom plate is fixedly connected with a water tank, and the upper side of the water tank is provided with a water delivery pipeline. The water conveying pipeline is communicated with the smoke exhaust pipeline, a treatment box is fixedly connected to the upper surface of the bottom plate, and a backflow pipeline communicated with the interior of the treatment box is fixedly connected to the upper end of the treatment box; through cooperation of a treatment box, a backflow pipeline, a filtering assembly, a communicating pipeline, a water pump and other structures, the situation of accumulation in a smoke exhaust pipeline is effectively avoided, so that combination of particles and water mist in smoke is effectively avoided, the situations of scaling and slagging are reduced, meanwhile, recycling of water resources is achieved, the use cost of the device is further reduced, and the device is worthy of popularization and application. And the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of boiler, concretely is high alkali coal circulating fluidized bed anti -slagging boiler based on flow state regulation and control. BACKGROUND

[0002] Boiler is a kind of energy converter, it is the equipment using the heat energy released by fuel combustion or other heat energy to heat working water or other fluid to certain parameters, circulating fluidized bed combustion technology with its fuel adaptability, high combustion efficiency, low pollutant emission advantage, become one of the important ways of high alkali coal combustion utilization, when circulating fluidized bed boiler operates, furnace and return feeder and other parts are prone to slagging phenomenon, cause heat transfer deterioration, aggravate wear and tear, fluidization is not smooth even to shut down problems.

[0003] Announcement number: CN216079875U, disclose a kind of coal powder boiler prevents fouling and slagging device, but above-mentioned prior art in actual use process, since the flue gas generated after coal powder combustion needs to be sprayed, and flue gas itself contains a large amount of fly ash and other solid particulate matter, water in water mist can be used as condensation nucleus, make these particulate matter collide, gather, condense into larger solid particles, especially when the particulate matter concentration in flue gas is higher, and water mist provides sufficient humidity and contact opportunity, this condensation effect will be more obvious, thereby in pipe internal scale, slagging and other situations occur, cause pipe blockage, poor practicality. UTILITY MODEL CONTENT

[0004] The utility model aims at providing high alkali coal circulating fluidized bed anti -slagging boiler based on flow state regulation and control to solve the problems in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: high alkali coal circulating fluidized bed anti -slagging boiler based on flow state regulation and control, including bottom plate and fixed installation on the bottom plate on boiler body, the surface of boiler body is connected with exhaust gas pipeline, the upper surface of bottom plate is fixedly connected with water tank, the upper side of water tank is provided with water pipeline, water pipeline and exhaust gas pipeline are communicated, the upper surface of bottom plate is fixedly connected with processing box, the upper end of processing box is fixedly connected with the return pipeline that is communicated with inside, the upper end of return pipeline and exhaust gas pipeline are communicated, the inside of processing box is hollow, the inside of processing box is provided with filter assembly, water pump is fixedly connected on the bottom plate between water tank and processing box, the both ends of water pump are provided with communicating pipeline, the communicating pipeline is connected with water tank and processing box respectively, the surface of filter assembly is provided with mounting assembly.

[0006] Preferably, the filter assembly includes a screening plate, a sand filter plate, and an activated carbon plate, the screening plate is located on the upper side of the sand filter plate, and the sand filter plate is located on the upper side of the activated carbon plate.

[0007] Preferably, the surface of the processing box is provided with a mounting slot in communication with the interior, and the filter assembly is slidably connected to the interior of the processing box through the mounting slot.

[0008] Preferably, the mounting assembly comprises a fixed plate, the fixed plate is fixedly connected with the filter assembly, the interior of the fixed plate is provided with a movable slot, the interior of the movable slot is slidably connected with a driving plate, and the side surface of the driving plate facing the processing box is fixedly connected with a triangular block.

[0009] Preferably, the side surface of the processing box facing the fixed plate is provided with a butt joint slot, the butt joint slot is matched with the driving plate and the triangular block, and the inner wall of the butt joint slot is provided with a clamping slot matched with the triangular block.

[0010] Preferably, the interior of the movable slot is fixedly connected with a guide rod, and the driving plate is slidably sleeved on the outer surface of the guide rod.

[0011] Preferably, a spring is fixedly connected between the driving plate and the inner wall of the movable slot, and the spring is movably sleeved on the outside of the guide rod.

[0012] Preferably, the surface of the boiler body is provided with a coal conveying pipeline.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a processing box, a reflux pipeline, a filter assembly, a communication pipeline and a water pump cooperate, effectively avoid the condition that the inside of the smoke exhaust pipeline is accumulated, thereby effectively avoid the combination of the particles in the flue gas and the water mist, reduce the scale and slag condition, also realize the recycling of water resources, further reduce the use cost of the device, and the practicality is higher.

[0015] 2、The utility model discloses a fixed plate, a driving plate, a triangular block and a spring cooperate, very convenient for replacing and cleaning the filter assembly, thereby guaranteeing the treatment effect of water resources, the practicality is higher, and the subsequent treatment effect of flue gas is guaranteed. DRAWINGS

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2 It is the sectional structure schematic view of the smoke exhaust pipeline of the utility model;

[0018] Figure 3 It is the first sectional structure schematic view of the processing box of the utility model;

[0019] Figure 4It is the second schematic view of the sectional structure of the processing box of the utility model;

[0020] Figure 5 It is the schematic view of the structure of the fixed plate of the utility model;

[0021] Figure 6 It is Figure 5 It is the enlarged view of A in the middle;

[0022] Figure 7 It is Figure 4 It is the enlarged view of B in the middle.

[0023] In the figure: 1, boiler body; 2, smoke exhaust pipeline; 3, water tank; 4, water delivery pipeline; 5, processing box; 6, backflow pipeline; 7, filter assembly; 8, communication pipeline; 9, water pump; 10, installation slot; 11, fixed plate; 12, movable slot; 13, driving plate; 14, triangular block; 15, butt joint slot; 16, clamping groove; 17, guide rod; 18, spring; 19, coal delivery pipeline; 20, bottom plate;

[0024] 701, screening plate; 702, sand filter plate; 703, activated carbon plate. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0026] Please refer to Figures 1-7 As shown in the figure, the high-alkali coal circulating fluidized bed anti-slagging boiler based on flow state regulation includes a bottom plate 20 and a boiler body 1 fixedly installed on the bottom plate 20, the surface of the boiler body 1 is fixedly connected with a smoke exhaust pipeline 2, the upper surface of the bottom plate 20 is fixedly connected with a water tank 3, the upper side of the water tank 3 is provided with a water delivery pipeline 4, the water delivery pipeline 4 and the smoke exhaust pipeline 2 are in communication, the upper surface of the bottom plate 20 is fixedly connected with a processing box 5, the upper end of the processing box 5 is fixedly connected with a backflow pipeline 6 in communication with the inside, the upper end of the backflow pipeline 6 is in communication with the smoke exhaust pipeline 2, the inside of the processing box 5 is hollow, the inside of the processing box 5 is provided with a filter assembly 7, a water pump 9 fixedly connected on the bottom plate 20 is arranged between the water tank 3 and the processing box 5, both ends of the water pump 9 are provided with communication pipelines 8, the communication pipelines 8 are connected with the water tank 3 and the processing box 5 respectively, and the surface of the filter assembly 7 is provided with an installation assembly.

[0027] The smoke exhaust pipeline 2 is inclined to facilitate the flow of internal flue gas and water.

[0028] In the above embodiment, the water tank 3 and the water conveying pipeline 4 are existing structures, and specific reference can be made to the prior art with publication number CN216079875U. Since they are not the main structures, they will not be described in detail.

[0029] The filter assembly 7 includes a screening plate 701, a sand filter plate 702, and an activated carbon plate 703. The screening plate 701 is located on the upper side of the sand filter plate 702, and the sand filter plate 702 is located on the upper side of the activated carbon plate 703.

[0030] The surface of the treatment box 5 is provided with a mounting groove 10 in communication with the inside. The filter assembly 7 is slidably connected to the inside of the treatment box 5 through the mounting groove 10.

[0031] The mounting assembly includes a fixed plate 11 fixedly connected with the filter assembly 7. The inside of the fixed plate 11 is provided with a movable slot 12. The inside of the movable slot 12 is slidably connected with a driving plate 13. The side surface of the driving plate 13 facing the treatment box 5 is fixedly connected with a triangular block 14.

[0032] The side surface of the treatment box 5 facing the fixed plate 11 is provided with a butt joint groove 15. The butt joint groove 15 is matched with the driving plate 13 and the triangular block 14. The inner wall of the butt joint groove 15 is provided with a clamping groove 16 matched with the triangular block 14.

[0033] The inside of the movable slot 12 is fixedly connected with a guide rod 17. The driving plate 13 is slidably sleeved on the outer surface of the guide rod 17.

[0034] The spring 18 is fixedly connected between the driving plate 13 and the inner wall of the movable slot 12. The spring 18 is movably sleeved on the outside of the guide rod 17.

[0035] The surface of the boiler body 1 is provided with a coal conveying pipeline 19 connected with an external conveying device. It is an existing technology, and specific reference can be made to the prior art with publication number CN216079875U.

[0036] Working principle: first, the pulverized coal is conveyed into the inside of the boiler body 1 through the coal conveying pipeline 19 by the external conveying device. The flue gas generated during subsequent combustion is discharged through the smoke exhaust pipeline 2. At this time, the high-temperature flue gas can be sprayed and cooled through the cooperation of the water tank 3 and the water conveying pipeline 4, reducing the alkali metal in the flue gas and avoiding the phenomenon of contamination and slagging of the boiler. The water combined with the flue gas is arranged to enter the inside of the treatment box 5 through the arrangement of the smoke exhaust pipeline 2 and the backflow pipeline 6. At this time, the water is arranged to be filtered and purified by the filter assembly 7, thereby avoiding the formation of structures or slagging of the water remaining in the pipeline. The treated water is arranged to re-enter the inside of the water tank 3 through the arrangement of the communication pipeline 8 and the water pump 9, thereby realizing the recycling of the water.

[0037] When the filter assembly 7 needs to be cleaned, the two drive plates 13 are pressed in the middle, the triangular block 14 is moved by the setting of the drive plate 13, at this time the triangular block 14 will be separated from the inside of the clamping groove 16, and then the drive plate 13 and the triangular block 14 are taken out from the inside of the butt joint groove 15, so that the filter assembly 7 is disassembled.

[0038] When installing, the inclined surface of the triangular block 14 is abutted with the butt joint groove 15, then the fixed plate 11 is pushed to one side of the treatment box 5, at this time the triangular block 14 is moved, so that the drive plate 13 is moved, and the spring 18 is deformed, then the installation of the filter assembly 7 is realized by the elastic force of the spring 18.

[0039] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any indirect modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A high-alkali coal circulating fluidized bed anti-slagging boiler based on flow state regulation, comprising a bottom plate (20) and a boiler body (1) fixedly installed on the bottom plate (20), characterized in that: The surface of the boiler body (1) is fixedly connected with an exhaust pipe (2), the upper surface of the bottom plate (20) is fixedly connected with a water tank (3), the upper side of the water tank (3) is provided with a water conveying pipe (4), the water conveying pipe (4) and the exhaust pipe (2) are communicated, the upper surface of the bottom plate (20) is fixedly connected with a treatment box (5), the upper end of the treatment box (5) is fixedly connected with a reflux pipe (6) which is communicated with the inside, the upper end of the reflux pipe (6) is communicated with the exhaust pipe (2), the inside of the treatment box (5) is hollow, the inside of the treatment box (5) is provided with a filter assembly (7), the water tank (3) and the treatment box (5) are provided with a water pump (9) which is fixedly connected on the bottom plate (20), both ends of the water pump (9) are provided with a communication pipe (8), the communication pipe (8) is connected with the water tank (3) and the treatment box (5) respectively, the surface of the filter assembly (7) is provided with a mounting assembly.

2. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The filter assembly (7) comprises a screening plate (701), a sand filter plate (702) and an activated carbon plate (703), the screening plate (701) is located on the upper side of the sand filter plate (702), and the sand filter plate (702) is located on the upper side of the activated carbon plate (703).

3. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The surface of the treatment box (5) is provided with a mounting groove (10) which is communicated with the inside, and the filter assembly (7) is slidably connected in the inside of the treatment box (5) through the mounting groove (10).

4. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The mounting assembly comprises a fixed plate (11), the fixed plate (11) is fixedly connected with the filter assembly (7), the inside of the fixed plate (11) is provided with a movable slot (12), the inside of the movable slot (12) is slidably connected with a driving plate (13), and one side surface of the driving plate (13) facing the treatment box (5) is fixedly connected with a triangular block (14).

5. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: One side surface of the treatment box (5) facing the fixed plate (11) is provided with a butt joint groove (15), the butt joint groove (15) is matched with the driving plate (13) and the triangular block (14), and a clamping groove (16) is formed in the inner wall of the butt joint groove (15) and matched with the triangular block (14).

6. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The inside of the movable slot (12) is fixedly connected with a guide rod (17), and the driving plate (13) is slidably sleeved on the outer surface of the guide rod (17).

7. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The spring (18) is movably sleeved on the outside of the guide rod (17).

8. The high-alkali coal circulating fluidized bed anti-slaging boiler based on flow regime control according to claim 1, characterized in that: The surface of the boiler body (1) is provided with a coal conveying pipe (19).

Images