Coal furnace combustion flue gas treatment device

Abstract

The utility model provides a coal furnace combustion flue gas treatment device, and relates to the technical field of coal furnace combustion flue gas treatment. A coal furnace combustion flue gas treatment device comprises a heat exchange water tank, a treatment tank and a water pump, a connecting flue gas pipe is installed on the treatment tank, a filtering mechanism and a spraying mechanism which are used for treating flue gas are arranged in the treatment tank, and the filtering mechanism comprises a bottom cylinder installed on the inner bottom wall of the treatment tank. One end of the connecting smoke pipe extends into the bottom cylinder, and the top of the bottom cylinder is fixedly connected with a filter cylinder net. Flue gas is filled into the filtering mechanism through a connecting flue gas pipe, the flue gas is filtered through a filter cartridge net, harmful gas in the filtered flue gas is purified through treatment liquid sprayed out of a spray head on a spray pipe, and in the treatment process, a rotating rod is driven to rotate, so that the harmful gas in the flue gas is purified. And a brush on one side surface of the connecting frame is used for cleaning the inner wall of the filter cartridge net, so that the filter cartridge net is prevented from being blocked to influence the flue gas treatment effect.

Description

Technical Field

[0001] The utility model relates to a flue gas treatment, in particular to a coal furnace combustion flue gas treatment device, belonging to the technical field of coal furnace combustion flue gas treatment. Background Art

[0002] Coal is praised as black gold and food for industry. It has been one of the main energy sources used by the human world since the 18th century. Since the 21st century, although the value of coal is not as high as before, it is still one of the indispensable sources of energy for our production and life for a long time. The supply of coal is also related to the stability of the development of my country's industry and even the entire society. The security of coal supply is also the most important part of my country's energy security. Coal furnaces are used to burn coal. Since coal contains certain toxic chemicals, it will float with the coal powder and pollute the surrounding environment. It needs to be treated before discharge.

[0003] Chinese patent announcement number CN207970624U discloses a flue gas treatment device for coal, including an outer shell, a concave plate fixedly installed at the bottom of the inner cavity of the outer shell, a filter screen and an activated carbon layer are respectively clamped inside the concave plate, a cover plate is arranged on the top of the outer shell, fixing rods are welded on both sides of the top of the cover plate, a slot is opened on the top of the fixing rod, support rods are welded on both sides of the outer shell through connecting blocks, the outer surface of the support rod is threadedly connected to a threaded sleeve through a threaded rod, a sleeve tube is arranged on the top of the threaded sleeve, the other two sides of the outer surface of the outer shell are fixedly connected to a connecting spring through the connecting plate, one end of the connecting spring is fixedly connected to a movable block, one end of the sleeve tube is welded to the bottom of the movable block, a locking rod is welded on the top of the movable block, and one end of the locking rod extends to the inside of the slot.

[0004] However, the inventor of the above device believes that there are certain defects. The filter in the above device will be blocked by particulate impurities after long-term use, and the filter needs to be taken out of the treatment device for cleaning. Manual cleaning is troublesome, and the device needs to stop running when the filter is taken out, affecting the efficiency of flue gas treatment. For this reason, the utility model provides a coal furnace combustion flue gas treatment device. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the present utility model is to provide a coal furnace combustion flue gas treatment device in order to solve the above-mentioned problem, so as to solve the problem that the filter screen in the above-mentioned comparative document will be blocked by particulate impurities after long-term use, and the device needs to stop running when the filter screen is taken out, affecting the efficiency of flue gas treatment.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a coal furnace combustion flue gas treatment device, including a heat exchange water tank, a treatment tank and a water pump, a connecting smoke pipe is installed on the treatment tank, and a filtering mechanism and a spraying mechanism for flue gas treatment are arranged inside the treatment tank, the filtering mechanism includes a bottom cylinder installed on the bottom wall of the treatment tank, one end of the connecting smoke pipe extends to the inside of the bottom cylinder, the top of the bottom cylinder is fixedly connected with a filter cylinder net, the top of the filter cylinder net is fixedly connected with a top cover, the top cover is rotatably connected with a rotating rod, the rotating rod is fixedly connected with a connecting frame, a side of the connecting frame is fixedly connected with a brush, and the spraying mechanism includes a plurality of spray pipes installed inside the heat exchange water tank, and each of the spray pipes is installed with a nozzle.

[0009] Preferably, a smoke inlet pipe is installed on the water exchange water tank, a heat exchange tube is installed inside the water exchange water tank, both ends of the heat exchange tube are respectively connected with the smoke inlet pipe and the connecting smoke pipe, a water injection pipe is fixedly connected to the top of the water exchange water tank, and a drainage pipe is fixedly connected to one side of the water exchange water tank.

[0010] Preferably, one end of the bottom cylinder extends to the bottom of the processing tank, and a cover plate is installed at the bottom of the bottom cylinder.

[0011] Preferably, a connection box is installed inside the treatment tank, a plurality of spray pipes are distributed on the connection box in a circular array, the plurality of spray pipes are connected to the connection box, and a smoke exhaust pipe is fixedly connected to the top of the treatment tank.

[0012] Preferably, the water suction pipe of the water pump is connected to the treatment tank, and a connecting pipe is installed at the discharge end of the water pump, and the other end of the connecting pipe passes through the treatment tank and the connection box and extends to the interior of the connection box.

[0013] Preferably, one end of the rotating rod extends to the interior of the connecting box, and an impeller is fixedly connected to the rotating rod.

[0014] Preferably, a spring is fixedly connected to the rotating rod, and an impact ball is installed at the other end of the spring.

[0015] The utility model provides a coal furnace combustion flue gas treatment device, which has the following beneficial effects:

[0016] 1. The device fills the smoke into the filter mechanism by connecting the smoke pipe, and filters the smoke through the filter cylinder net. The filtered smoke passes through the treatment liquid sprayed from the nozzle on the spray pipe to purify the harmful gases in the smoke. During the treatment process, the rotating rod is driven to rotate, so that the brush on one side of the connecting frame cleans the inner wall of the filter cylinder net to prevent the filter cylinder net from being blocked and affecting the effect of smoke treatment.

[0017] 2. The device uses the heat exchange tubes to allow the flue gas to exchange heat before entering the treatment tank, so that the heat in the flue gas can be recycled. The treatment liquid on the bottom wall of the treatment tank is drawn into the connection box by starting the water pump, and then sprayed out through the nozzles on the multiple spray pipes to treat the flue gas. The multiple connection boxes in the circular array can fully spray the inside of the treatment tank, thereby improving the effect of flue gas treatment.

[0018] 3. The device uses an impeller to allow the treated liquid to be filled into the connection box through the connecting pipe. The water flow impacts the impeller to rotate, thereby driving the rotating rod to rotate, reducing the number of driving motors used and saving energy consumption. During the rotation of the rotating rod, the spring is stretched under the action of centrifugal force, and the impact ball repeatedly impacts the inside of the filter cylinder net to shake off the impurities adhering to the inner wall of the filter cylinder net, thereby improving the cleaning effect of the filter cylinder net. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall stereogram of the utility model;

[0020] Figure 2 This is a cross-sectional view of the treatment tank structure of the utility model;

[0021] Figure 3 This is a three-dimensional diagram of the connection box structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the water exchange tank of the utility model.

[0023]

Main component symbol description

[0024] 1. Heat exchange water tank; 11. Smoke inlet pipe; 12. Smoke connecting pipe; 13. Water injection pipe; 14. Drain pipe; 2. Treatment tank; 21. Smoke exhaust pipe; 3. Bottom cylinder; 4. Filter cylinder net; 5. Top cover; 6. Rotating rod; 61. Connecting frame; 62. Impact ball; 63. Impeller; 7. Connecting box; 71. Spray pipe; 8. Water pump; 81. Connecting pipe; 9. Heat exchange pipe. DETAILED DESCRIPTION

[0025] The utility model embodiment provides a coal furnace combustion smoke treatment device.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4A coal furnace combustion flue gas treatment device comprises a heat exchange water tank 1, a treatment tank 2 and a water pump 8. A connecting smoke pipe 12 is installed on the treatment tank 2, a smoke inlet pipe 11 is installed on the heat exchange water tank 1, and a heat exchange tube 9 is installed inside the heat exchange water tank 1. The two ends of the heat exchange tube 9 are respectively connected with the smoke inlet pipe 11 and the connecting smoke pipe 12. A water injection pipe 13 is fixedly connected to the top of the heat exchange water tank 1, and a drainage pipe 14 is fixedly connected to one side of the heat exchange water tank 1. The flue gas enters the interior of the heat exchange tube 9 through the smoke inlet pipe 11, and cold water is injected into the interior of the heat exchange water tank 1 through the water injection pipe 13, so that the flue gas flows through the heat exchange tube 9 to perform heat exchange on the cold water inside the heat exchange water tank 1. The cooled flue gas is filled into the interior of the treatment tank 2 through the connecting smoke pipe 12 for treatment, and the water after heat exchange can be discharged from the interior of the heat exchange water tank 1 through the drainage pipe 14.

[0027] Please refer again Figure 2 The interior of the treatment tank 2 is provided with a filtering mechanism and a spraying mechanism for flue gas treatment. The filtering mechanism includes a bottom cylinder 3 installed on the inner bottom wall of the treatment tank 2. One end of the connected smoke pipe 12 extends to the interior of the bottom cylinder 3. The top of the bottom cylinder 3 is fixedly connected with a filter cylinder net 4. The top of the filter cylinder net 4 is fixedly connected with a top cover 5. One end of the bottom cylinder 3 extends to the bottom of the treatment tank 2. A cover plate is installed at the bottom of the bottom cylinder 3. The smoke pipe 12 is connected to fill the smoke into the interior of the bottom cylinder 3, and then the smoke is filtered through the filter cylinder net 4 to filter out particulate impurities in the smoke. The particulate impurities finally fall into the inner bottom wall of the bottom cylinder 3 for collection, and the particulate impurities are discharged by opening the cover plate at the bottom of the bottom cylinder 3.

[0028] Please refer again Figure 2 and Figure 3 The spray mechanism includes a plurality of spray pipes 71 installed inside the heat exchange water tank 1, each spray pipe 71 is installed with a nozzle, a connection box 7 is installed inside the treatment tank 2, a plurality of spray pipes 71 are distributed on the connection box 7 in a circular array, and the plurality of spray pipes 71 are connected with the connection box 7, a smoke exhaust pipe 21 is fixedly connected to the top of the treatment tank 2, a water pump 8 is connected with the treatment tank 2, a connecting pipe 81 is installed at the drainage end of the water pump 8, the other end of the connecting pipe 81 passes through the treatment tank 2 and the connection box 7 and extends to the inside of the connection box 7, the treatment liquid on the bottom wall of the treatment tank 2 is extracted by starting the water pump 8, the treatment liquid is filled into the inside of the connection box 7 through the connecting pipe 81, and then the treatment liquid is dispersed into the inside of the plurality of spray pipes 71 through the connection box 7, and sprayed out through the nozzles on the spray pipes 71 to purify the harmful gases in the flue gas, and the plurality of spray pipes 71 in the circular array can fully spray the inside of the treatment tank 2, thereby improving the effect of flue gas treatment.

[0029] Please refer again Figure 2 and Figure 3A rotating rod 6 is rotatably connected to the top cover 5, a connecting frame 61 is fixedly connected to the rotating rod 6, a brush is fixedly connected to one side of the connecting frame 61, one end of the rotating rod 6 extends to the inside of the connecting box 7, an impeller 63 is fixedly connected to the rotating rod 6, a spring is fixedly connected to the rotating rod 6, and an impact ball 62 is installed on the other end of the spring. When the connecting pipe 81 fills the treated liquid into the inside of the connecting box 7, the water flow impacts the impeller 63 to drive the rotating rod 6 to rotate, and the inner wall of the filter cylinder net 4 is cleaned by the brush on one side of the connecting frame 61 to prevent the filter cylinder net 4 from being blocked, and the spring is stretched under the action of centrifugal force, and the impact ball 62 repeatedly impacts the inside of the filter cylinder net 4 to shake off the impurities adhering to the inner wall of the filter cylinder net 4, thereby improving the cleaning effect of the filter cylinder net 4.

[0030] Working principle: inject the treatment liquid into the inner bottom wall of the cold water treatment tank 2 inside the heat exchange water tank 1, the flue gas after combustion enters the inside of the heat exchange tube 9 through the smoke inlet pipe 11, and the flue gas exchanges heat with the cold water inside the heat exchange water tank 1 during the process of flowing through the heat exchange tube 9. The cooled flue gas is filled into the inside of the bottom tube 3 through the connecting smoke pipe 12, and then filtered through the filter cylinder net 4 to filter out the particulate impurities in the flue gas. The treatment liquid of the bottom wall of the treatment tank 2 is extracted by starting the water pump 8, and then the treatment liquid is dispersed to the inside of multiple spray pipes 71 through the connecting pipe 81 and the connecting box 7, and finally sprayed The nozzle on the shower pipe 71 sprays out to purify the filtered flue gas and purify the harmful gases in the flue gas. When the connecting pipe 81 fills the treatment liquid into the inside of the connecting box 7, the water flow impacts the impeller 63 to drive the rotating rod 6 to rotate. The inner wall of the filter cylinder net 4 is cleaned by the brush on one side of the connecting frame 61 and the spring is stretched under the action of centrifugal force. The impact ball 62 repeatedly impacts the inside of the filter cylinder net 4 to shake off the impurities adhering to the inner wall of the filter cylinder net 4. By opening the cover at the bottom of the bottom cylinder 3, the cleaned impurities can be discharged, and the treated flue gas is finally discharged through the exhaust pipe 21.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coal furnace combustion flue gas treatment device, comprising a heat exchange water tank (1), a treatment tank (2) and a water pump (8), characterized in that: The treatment tank (2) is provided with a connecting smoke pipe (12), and a filtering mechanism and a spraying mechanism for treating smoke are arranged inside the treatment tank (2), the filtering mechanism comprises a bottom cylinder (3) mounted on the bottom wall of the treatment tank (2), one end of the connecting smoke pipe (12) extends into the interior of the bottom cylinder (3), the top of the bottom cylinder (3) is fixedly connected with a filter cylinder net (4), the top of the filter cylinder net (4) is fixedly connected with a top cover (5), the top cover (5) is rotatably connected with a rotating rod (6), the rotating rod (6) is fixedly connected with a connecting frame (61), and a side surface of the connecting frame (61) is fixedly connected with a brush, the spraying mechanism comprises a plurality of spraying pipes (71) mounted inside the hot water exchange tank (1), each of the spraying pipes (71) is provided with a spray head, the treatment tank (2) is provided with a plurality of spraying pipes (71), each of the spraying pipes (71) is provided with a spray head, A connection box (7) is installed inside the treatment tank (2), and a plurality of spray pipes (71) are distributed on the connection box (7) in a circular array. The plurality of spray pipes (71) are all connected to the connection box (7). A smoke exhaust pipe (21) is fixedly connected to the top of the treatment tank (2). The water suction pipe of the water pump (8) is connected to the treatment tank (2). A connection pipe (81) is installed at the drainage end of the water pump (8). The other end of the connection pipe (81) passes through the treatment tank (2) and the connection box (7) and extends to the inside of the connection box (7). One end of the rotating rod (6) extends to the inside of the connection box (7). An impeller (63) is fixedly connected to the rotating rod (6). A spring is fixedly connected to the rotating rod (6), and an impact ball (62) is installed at the other end of the spring.

2. A coal furnace combustion flue gas treatment device according to claim 1, characterized in that: The heat exchange water tank (1) is provided with a smoke inlet pipe (11), a heat exchange tube (9) is provided inside the heat exchange water tank (1), both ends of the heat exchange tube (9) are respectively connected to the smoke inlet pipe (11) and the smoke connection pipe (12), a water injection pipe (13) is fixedly connected to the top of the heat exchange water tank (1), and a drainage pipe (14) is fixedly connected to one side of the heat exchange water tank (1).

3. The coal furnace combustion flue gas treatment device according to claim 1, characterized in that: One end of the bottom cylinder (3) extends to the bottom of the processing tank (2), and a cover plate is installed at the bottom of the bottom cylinder (3).

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