Flue gas wet desulphurization and dust removal integrated equipment

Abstract

The utility model relates to the technical field of flue gas desulfurization, and discloses flue gas wet desulfurization and dust removal integrated equipment which comprises a desulfurization tower, the bottom of the desulfurization tower is fixedly connected with a motor, the output end of the motor penetrates through the desulfurization tower and is fixedly connected with a stirring plate, the right side of the outer wall of the desulfurization tower is communicated with a first water pump, and the right side of the outer wall of the desulfurization tower is communicated with a second water pump. The output end of the first water pump communicates with a circulating pipe, the other end of the circulating pipe communicates with a plurality of spraying pipes, the left side of the outer wall of the desulfurizing tower communicates with an air inlet pipe, and a partition plate is fixedly connected to the middle of the inner wall of the desulfurizing tower. According to the utility model, the stirring plate is driven by the motor to rotate so as to uniformly stir desulfurization slurry at the bottom of the desulfurization tower, the desulfurization slurry is sprayed into the desulfurization tower in a mist form through the spraying pipe, and after the desulfurization slurry is uniformly distributed through the flow equalizing plate, the dust collection plate adsorbs smoke dust particles in flue gas, so that the dust removal function is realized; the problem that desulfurization cannot be carried out uniformly due to short contact time of waste gas and a lime water solution is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to integrated equipment for wet flue gas desulfurization and dust removal. Background Art

[0002] Flue gas purification and treatment of coal-fired boilers and industrial furnaces is very important. The country's energy supply is still mainly coal, supplemented by other energy sources. In the process of exhaust gas treatment, integrated flue gas wet desulfurization and dust removal equipment is needed.

[0003] Flue gas wet desulfurization and dust removal integrated equipment is a kind of equipment that integrates desulfurization and dust removal. After wet desulfurization, the particulate matter in the exhaust gas is adsorbed and dust removed, so that the exhaust gas after dust removal meets the exhaust gas emission standards before being discharged.

[0004] The currently common integrated flue gas wet desulfurization and dust removal equipment is to desulfurize the exhaust gas by directly discharging it into a lime water solution through a pipe, and then filtering it through an air filter. Due to the continuous discharge of exhaust gas, the contact time between the exhaust gas and the lime water solution is short, resulting in uneven desulfurization, which reduces the desulfurization rate. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an integrated flue gas wet desulfurization and dust removal device, aiming to improve the problem in the prior art that the exhaust gas and the lime water solution have a short contact time, resulting in uneven desulfurization.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an integrated equipment for wet desulfurization and dust removal of flue gas, including a desulfurization tower, the bottom of the desulfurization tower is fixedly connected to a motor, the output end of the motor passes through the desulfurization tower and is fixedly connected to a stirring plate, the right side of the outer wall of the desulfurization tower is connected to a water pump 1, the output end of the water pump 1 is connected to a circulation pipe, the other end of the circulation pipe is connected to a plurality of spray pipes, the left side of the outer wall of the desulfurization tower is connected to an air inlet pipe, the middle part of the inner wall of the desulfurization tower is fixedly connected to a partition, the middle part of the left side of the outer wall of the desulfurization tower is connected to an air supply pipe, the inner wall of the air supply pipe is fixedly connected to a plurality of heating plates, a flow equalizing plate is provided on the upper side of the partition, a dust suction plate is provided on the upper side of the flow equalizing plate, the flow equalizing plate and the dust suction plate are both on the inner wall of the desulfurization tower, and a cleaning mechanism is provided on the rear side of the outer wall of the desulfurization tower, and the cleaning mechanism is used to clean the dust suction plate.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a water tank, which is fixedly connected to the rear side of the outer wall of the desulfurization tower. The top of the water tank is connected to water pump 2, the output end of water pump 2 is connected to a pipeline, and the other end of the pipeline is connected to two branches. The bottoms of the two branches are rotatably connected to multiple nozzles, the inner walls of the multiple nozzles are fixedly connected to impellers, and water outlet holes are opened all around the outer walls of the nozzles.

[0009] As a further description of the above technical solution:

[0010] A dustproof plate is fixedly connected to the top of the desulfurization tower, and an air detector is fixedly connected to the bottom of the dustproof plate.

[0011] As a further description of the above technical solution:

[0012] A mounting seat is fixedly connected to the top of the front side of the outer wall of the desulfurization tower, and an alarm is fixedly connected to the outer wall of the mounting seat.

[0013] As a further description of the above technical solution:

[0014] A drainage hole is provided on the right side of the outer wall of the desulfurization tower, and the inner wall of the drainage hole is threadedly connected to a plug.

[0015] As a further description of the above technical solution:

[0016] A reserved groove is provided at the bottom of the outer wall of the desulfurization tower, and a liquid level detector is fixedly connected to the inner wall of the reserved groove.

[0017] As a further description of the above technical solution:

[0018] A plurality of support frames are fixedly connected to the front side of the outer wall of the desulfurization tower, and display screens are fixedly connected to the tops of two of the support frames.

[0019] As a further description of the above technical solution:

[0020] The bottom of the air inlet pipe is fixedly connected to a power distribution cabinet, which is electrically connected to the motor, water pump 1, heating plate, air detector, alarm, display screen and water pump 2. A handle is fixedly connected to the front side of the outer wall of the power distribution cabinet.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the desulfurization slurry at the bottom of the desulfurization tower is stirred by a motor to ensure that the desulfurization slurry has a good desulfurization effect. The desulfurization slurry is sprayed into the desulfurization tower in the form of mist through a spray pipe. After being evenly distributed by the flow equalizing plate, the dust absorption plate absorbs the smoke particles in the flue gas to achieve dust removal function, thereby solving the problem of uneven desulfurization due to the short contact time between the exhaust gas and the lime water solution.

[0023] 2. In this utility model, water is pumped out of the water tank by starting water pump 2, which is then delivered to the branch pipe through the output end. After entering the branch pipe, the water flows to each nozzle. The water impacts the impeller on the inner wall of the nozzle. Driven by the water flow, the impeller rotates, driving the nozzle to rotate. As the nozzle rotates, water is ejected radially from the water outlet holes around the outer wall of the nozzle, comprehensively flushing the dust collection plate. This improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the integrated flue gas wet desulfurization and dust removal equipment proposed in the utility model;

[0025] Figure 2 This is a front view of the integrated flue gas wet desulfurization and dust removal equipment proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the partial structure of the integrated flue gas wet desulfurization and dust removal equipment proposed in the utility model;

[0027] Figure 4 This is a side view of the integrated flue gas wet desulfurization and dust removal equipment proposed in the utility model;

[0028] Figure 5 This is a schematic diagram of the cleaning mechanism of the integrated flue gas wet desulfurization and dust removal equipment proposed in the present invention;

[0029] Figure 6 This is a partial structural breakdown diagram of the integrated flue gas wet desulfurization and dust removal equipment proposed in the utility model;

[0030] Figure 7 This is an enlarged view of point A of the integrated flue gas wet desulfurization and dust removal equipment proposed in the present utility model.

[0031] Legend:

[0032] 1. Desulfurization tower; 2. Cleaning mechanism; 201. Water tank; 202. Water pump 2; 203. Pipeline; 204. Branch pipe; 205. Nozzle; 206. Impeller; 207. Water outlet; 3. Motor; 4. Stirring plate; 5. Water pump 1; 6. Circulation pipe; 7. Spray pipe; 8. Partition; 9. Air duct; 10. Heating plate; 11. Flow equalizing plate; 12. Dust collecting plate; 13. Dustproof plate; 14. Air detector; 15. Mounting base; 16. Alarm; 17. Drain hole; 18. Blockage; 19. Power distribution cabinet; 20. Handle; 21. Support frame; 22. Display screen; 23. Reserved slot; 24. Liquid level detector; 25. Air inlet pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 , the utility model provides an embodiment: an integrated device for wet desulfurization and dust removal of flue gas, including a desulfurization tower 1, a motor 3 is fixedly connected to the bottom of the desulfurization tower 1, the output end of the motor 3 passes through the desulfurization tower 1 and is fixedly connected to a stirring plate 4, the stirring plate 4 ensures that the slurry composition is uniform, and improves the efficiency of the desulfurization reaction, the right side of the outer wall of the desulfurization tower 1 is connected to a water pump 5, the output end of the water pump 5 is connected to a circulation pipe 6, the other end of the circulation pipe 6 is connected to a plurality of spray pipes 7, the spray pipe 7 sprays the desulfurization slurry into the desulfurization tower 1 in the form of a mist, the left side of the outer wall of the desulfurization tower 1 is connected to an air inlet pipe 25, the middle part of the inner wall of the desulfurization tower 1 is fixedly connected to a partition 8, the partition 8 can divide the desulfurization tower 1 into two working areas, the middle part of the left side of the outer wall of the desulfurization tower 1 is connected to an air supply pipe 9, the air supply pipe A plurality of heating plates 10 are fixedly connected to the inner wall of the air duct 9. The heating plates 10 can increase the temperature of the flue gas to prevent condensation of the flue gas due to excessively low temperature during the discharge process. A flow equalizing plate 11 is provided on the upper side of the partition 8. A dust collecting plate 12 is provided on the upper side of the flow equalizing plate 11. The dust collecting plate 12 can absorb smoke particles in the flue gas. The flow equalizing plate 11 and the dust collecting plate 12 are both fixedly connected to the inner wall of the desulfurization tower 1. A cleaning mechanism 2 is provided on the rear side of the outer wall of the desulfurization tower 1. The cleaning mechanism 2 is used to clean the dust collecting plate 12; a mounting seat 15 is fixedly connected to the top of the front side of the outer wall of the desulfurization tower 1, and an alarm 16 is fixedly connected to the outer wall of the mounting seat 15; a power distribution cabinet 19 is fixedly connected to the bottom of the air inlet pipe 25, and a handle 20 is fixedly connected to the front side of the outer wall of the power distribution cabinet 19;

[0035] Specifically, the sulfur-containing flue gas enters the desulfurization tower 1 through the air inlet pipe 25, the motor 3 is started, and its output end drives the stirring plate 4 to rotate, stirring the desulfurization slurry at the bottom of the desulfurization tower 1, and the water pump 5 works to extract the desulfurization slurry at the bottom of the desulfurization tower 1 and transport it to multiple spray pipes 7 through the circulation pipe 6. The spray pipe 7 sprays the desulfurization slurry into the desulfurization tower 1 in the form of a mist. The rising flue gas is fully in contact with the desulfurization slurry sprayed down, and the sulfur dioxide in the flue gas reacts chemically with the desulfurization slurry and is absorbed and fixed to achieve desulfurization. The flue gas that has passed the preliminary desulfurization treatment continues to rise and reaches the position of the air delivery pipe 9. The multiple heating plates 10 on the inner wall of the air delivery pipe 9 are used to heat the flue gas inlet. The purpose of heating is to increase the temperature of the flue gas and prevent the flue gas from condensing due to the low temperature during the discharge process, so as to avoid the secondary pollution problems such as "white smoke" and "gypsum rain". The heated flue gas passes through the flow equalizing plate 11 on the partition 8. The function of the flow equalizing plate 11 is to evenly distribute the flue gas. The flue gas after flow equalization continues to rise and reaches the dust collection plate 12. The dust collection plate 12 can absorb the smoke particles in the flue gas to achieve dust removal function; the alarm 16 on the mounting base 15 is used to sound an alarm when an abnormal situation occurs in the equipment, reminding the staff to deal with it in time; the power distribution cabinet 19 at the bottom of the air inlet duct 25 is used to distribute and control the power of the entire equipment.

[0036] Reference Figure 4 、 Figure 5 and Figure 7 The cleaning mechanism 2 includes a water tank 201, which is fixedly connected to the rear side of the outer wall of the desulfurization tower 1. The top of the water tank 201 is connected to a water pump 202, and the output end of the water pump 202 is connected to a pipe 203. The other end of the pipe 203 is connected to two branch pipes 204. The bottoms of the two branch pipes 204 are rotatably connected to multiple nozzles 205. The inner walls of the multiple nozzles 205 are fixedly connected to impellers 206. The impellers 206 drive the nozzles 205 to rotate under the impact of water flow. Water outlet holes 207 are opened around the outer walls of the nozzles 205, and water flows radially out through the water outlet holes 207.

[0037] Specifically, when the dust collecting plate 12 needs to be cleaned, water pump 202 is started. Water pump 202 pumps water out of the water tank 201 and transports it to the two branch pipes 204 through the pipe 203 at the output end. After the water enters the branch pipe 204, it flows to each nozzle 205. Since the nozzle 205 is rotatably connected to the branch pipe 204, when water passes through the inside of the nozzle 205, the water flow will impact the impeller 206 on the inner wall of the nozzle 205. Under the impetus of the water flow, the impeller 206 starts to rotate, thereby driving the nozzle 205 to rotate. As the nozzle 205 rotates, water is radially sprayed out from the water outlet holes 207 around the outer wall of the nozzle 205, and the dust collecting plate 12 is washed in all directions. This rotary water spraying design can expand the cleaning range, improve the cleaning effect, ensure that the smoke and dust particles on the dust collecting plate 12 are effectively washed away, thereby ensuring that the dust removal performance of the dust collecting plate 12 is always in good condition.

[0038] Reference Figure 3 、 Figure 4 and Figure 6 A dustproof plate 13 is fixedly connected to the top of the desulfurization tower 1, and an air detector 14 is fixedly connected to the bottom of the dustproof plate 13. The air detector 14 can detect the quality of the exhaust gas; a drainage hole 17 is opened on the right side of the outer wall of the desulfurization tower 1, and a plug 18 is threadedly connected to the inner wall of the drainage hole 17;

[0039] Specifically, the dustproof plate 13 is located at the top of the desulfurization tower 1, and its main function is to prevent external dust and other impurities from falling into the desulfurization tower 1; the air detector 14 is fixed at the bottom of the dustproof plate 13, and is used to detect the gas quality discharged from the desulfurization tower 1 in real time. The air detector 14 can detect the content of various pollutants in the exhaust gas.

[0040] Reference Figure 2 、 Figure 3 and Figure 6 A reserved groove 23 is provided at the bottom of the outer wall of the desulfurization tower 1. The reserved groove 23 provides an installation position for a liquid level detector 24. The inner wall of the reserved groove 23 is fixedly connected with a liquid level detector 24. The liquid level detector 24 is used to monitor the liquid level of the desulfurization slurry in the desulfurization tower 1 in real time; a plurality of support frames 21 are fixedly connected to the front side of the outer wall of the desulfurization tower 1, and a display screen 22 is fixedly connected to the top of two support frames 21. The display screen 22 is used to display various parameter information during the operation of the equipment, such as liquid level, flue gas temperature, desulfurization efficiency, dust removal effect, etc.

[0041] Specifically, the reserved groove 23 is opened at the bottom of the outer wall of the desulfurization tower 1, providing an installation position for the liquid level detector 24, which is used to monitor the liquid level of the desulfurization slurry in the desulfurization tower 1 in real time; the support frame 21 is fixed on the front side of the outer wall of the desulfurization tower 1, providing stable support for the display screen 22, which is used to display various parameter information during the operation of the equipment, such as liquid level, flue gas temperature, desulfurization efficiency, dust removal effect, etc.

[0042] Working principle: Before using the device, first let the sulfur-containing flue gas enter the desulfurization tower 1 through the air inlet pipe 25, start the motor 3 to drive the stirring plate 4 to rotate and stir the desulfurization slurry at the bottom of the desulfurization tower 1, and the water pump 5 works to extract the desulfurization slurry at the bottom of the desulfurization tower 1 and transport it to multiple spray pipes 7 through the circulation pipe 6. The spray pipe 7 sprays the desulfurization slurry into the desulfurization tower 1 in the form of a mist. The rising flue gas is fully in contact with the desulfurization slurry sprayed down, and the sulfur dioxide in the flue gas reacts chemically with the desulfurization slurry and is absorbed and fixed. The flue gas treated by desulfurization continues to rise and is heated by multiple heating plates 10 on the inner wall of the air delivery pipe 9. The heated flue gas is evenly distributed through the flow equalizing plate 11 on the partition 8. The dust collection plate 12 can absorb the smoke particles in the flue gas to achieve the dust removal function;

[0043] And start water pump 202, water pump 202 pumps out water in water tank 201, and transports it to two branch pipes 204 through pipe 203 at the output end. After the water enters the branch pipe 204, it flows to each nozzle 205. Since the nozzle 205 is rotatably connected to the branch pipe 204, when water passes through the inside of the nozzle 205, the water flow will impact the impeller 206 on the inner wall of the nozzle 205. Under the push of the water flow, the impeller 206 starts to rotate, thereby driving the nozzle 205 to rotate. As the nozzle 205 rotates, water is radially sprayed out from the water outlet holes 207 around the outer wall of the nozzle 205, and the dust collection plate 12 is washed in all directions. This rotary water spraying design can expand the cleaning range, improve the cleaning effect, ensure that the smoke and dust particles on the dust collection plate 12 are effectively washed away, thereby ensuring that the dust removal performance of the dust collection plate 12 is always in good condition.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated device for wet flue gas desulfurization and dust removal, comprising a desulfurization tower (1), characterized in that: The bottom of the desulfurization tower (1) is fixedly connected to a motor (3), the output end of the motor (3) passes through the desulfurization tower (1) and is fixedly connected to a stirring plate (4), the right side of the outer wall of the desulfurization tower (1) is connected to a water pump (5), the output end of the water pump (5) is connected to a circulation pipe (6), the other end of the circulation pipe (6) is connected to a plurality of spray pipes (7), the left side of the outer wall of the desulfurization tower (1) is connected to an air inlet pipe (25), the middle part of the inner wall of the desulfurization tower (1) is fixedly connected to a partition (8), the desulfurization tower (1) is connected to the air inlet pipe (25), the middle part of the inner wall of the desulfurization tower (1) is fixedly connected to the partition (8), the desulfurization tower (1) is connected to the air inlet pipe (25), the air inlet pipe (25 ... An air supply pipe (9) is connected to the middle of the left side of the outer wall of the tower (1), and a plurality of heating plates (10) are fixedly connected to the inner wall of the air supply pipe (9). A flow equalizing plate (11) is provided on the top of the partition (8), and a dust collecting plate (12) is provided on the top of the flow equalizing plate (11). The flow equalizing plate (11) and the dust collecting plate (12) are both fixedly connected to the inner wall of the desulfurization tower (1). A cleaning mechanism (2) is provided on the rear side of the outer wall of the desulfurization tower (1), and the cleaning mechanism (2) is used to clean the dust collecting plate (12).

2. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: The cleaning mechanism (2) comprises a water tank (201), the water tank (201) being fixedly connected to the rear side of the outer wall of the desulfurization tower (1), the top of the water tank (201) being connected to a second water pump (202), the output end of the second water pump (202) being connected to a pipe (203), the other end of the pipe (203) being connected to two branch pipes (204), the bottoms of the two branch pipes (204) being rotatably connected to a plurality of nozzles (205), the inner walls of the plurality of nozzles (205) being fixedly connected to an impeller (206), and the outer walls of the nozzles (205) being provided with water outlet holes (207) all around.

3. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: A dustproof plate (13) is fixedly connected to the top of the desulfurization tower (1), and an air detector (14) is fixedly connected to the bottom of the dustproof plate (13).

4. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: A mounting seat (15) is fixedly connected to the top of the front side of the outer wall of the desulfurization tower (1), and an alarm (16) is fixedly connected to the outer wall of the mounting seat (15).

5. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: A drainage hole (17) is provided on the right side of the outer wall of the desulfurization tower (1), and a plug (18) is threadedly connected to the inner wall of the drainage hole (17).

6. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: A reserved groove (23) is provided at the bottom of the outer wall of the desulfurization tower (1), and a liquid level detector (24) is fixedly connected to the inner wall of the reserved groove (23).

7. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: A plurality of support frames (21) are fixedly connected to the front side of the outer wall of the desulfurization tower (1), and a display screen (22) is fixedly connected to the top of two of the support frames (21).

8. The integrated flue gas wet desulfurization and dust removal equipment according to claim 1, characterized in that: The bottom of the air inlet pipe (25) is fixedly connected to a power distribution cabinet (19), and the power distribution cabinet (19) is electrically connected to the motor (3), water pump 1 (5), heating plate (10), air detector (14), alarm (16), display screen (22) and water pump 2 (202). The front side of the outer wall of the power distribution cabinet (19) is fixedly connected to a handle (20).

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