Sulfur removal machine for power plant

Abstract

The utility model provides a desulfurization machine for a power plant, which relates to the technical field of flue gas desulfurization and comprises a rack, a first desulfurization box, a second desulfurization box, an induced draft fan and an exhaust fan, a first side box and a second side box are respectively arranged on two sides of the first desulfurization box, and filter screens are mounted on a first transmission mechanism and a second transmission mechanism. Cleaning mechanisms for cleaning the filter screen are arranged in the first side box and the second side box, flow slowing plates are arranged in the second sulfur removal box, a plurality of groups of flow slowing plates are arranged in a staggered manner, and a sulfur removal spraying mechanism is mounted above one side of each flow slowing plate; according to the utility model, the cleaning mechanisms for cleaning the filter screen are arranged in the first side box and the second side box, so that the filter screen can be cleaned by using the cleaning mechanisms, and the filter screen does not need to be detached in the process; and a plurality of groups of staggered flow slowing plates are matched with the desulfurization spraying mechanism, so that the flue gas filtered by the filter screen can be sufficiently flushed and desulfurized by the desulfurization spraying mechanism in the second desulfurization box.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a desulfurization machine used in a power plant. Background Art

[0002] Thermal power generation is a power generation method that uses the heat energy generated by the combustion of combustibles and converts it into electrical energy through a power generation device. China is rich in coal resources. In 1990, it produced 1.09 billion tons of coal, of which only 12% was used for power generation. Thermal power generation still has great potential. At present, coal used for power generation and heating in my country accounts for about 50% of the country's total coal production. About 90% of the country's SO 2 Emissions are generated by coal-fired power.

[0003] SO 2 When the contact with the clouds in the atmosphere reaches a certain amount, acid rain will fall down. Acid rain is extremely acidic and will corrode everything it touches, causing further deterioration of the environment while also causing certain economic losses. In order not to pollute the environment, the smoke generated during thermal power generation must be desulfurized. Existing desulfurizers have a simple structure, a single function, and a poor desulfurization effect. After the equipment has been used for a period of time, the filter needs to be replaced and cleaned in time. The filter of the existing desulfurizer is difficult to disassemble and assemble, and it is not convenient to clean it regularly. In addition, the desulfurization effect of the existing desulfurizer is average and it cannot fully remove sulfur. Therefore, the present application discloses a desulfurizer for thermal power plants with good removal effect to meet the needs.

[0004] Therefore, the utility model proposes a desulfurizer for a power plant to solve the deficiencies in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a desulfurizer for a power plant. By arranging a cleaning mechanism for cleaning the filter in the first side box and the second side box, the filter can be cleaned by the cleaning mechanism without removing the filter during the process. Arranging a plurality of groups of staggered slow flow plates in conjunction with the desulfurization spray mechanism can ensure that the flue gas filtered through the filter is fully flushed and desulfurized by the desulfurization spray mechanism in the second desulfurization box.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A desulfurization machine for a power plant comprises a frame, a first desulfurization box, a second desulfurization box, an induced draft fan and an exhaust fan, wherein a first desulfurization box is arranged above the frame, an induced draft fan is installed on the outer side of the first desulfurization box, the output end of the induced draft fan is connected to the interior of the first desulfurization box, a first side box and a second side box are respectively arranged on both sides of the first desulfurization box, a first transmission mechanism is arranged in the first side box, a second transmission mechanism is arranged in the second side box, filters are installed on the first transmission mechanism and the second transmission mechanism, cleaning mechanisms for cleaning the filters are arranged in the first side box and the second side box, a second desulfurization box is arranged above the frame on one side of the first desulfurization box, the first desulfurization box, the first side box and the second side box are all connected to the second desulfurization box, a slow flow plate is arranged in the second desulfurization box, a plurality of slow flow plates are provided, the plurality of slow flow plates are staggered, a desulfurization spray mechanism is installed above one side of the slow flow plate, and an exhaust fan is installed on the outlet side of the second desulfurization box.

[0008] Further improvements are: the first transmission mechanism includes a first transmission roller and a second transmission roller, the second transmission mechanism includes a third transmission roller and a fourth transmission roller, the first transmission roller and the second transmission roller are both rotatably installed inside the first side box, the third transmission roller and the fourth transmission roller are both rotatably installed inside the second side box, the filter is arranged around the first transmission roller, the second transmission roller, the third transmission roller and the fourth transmission roller, and the first transmission roller, the second transmission roller, the third transmission roller and the fourth transmission roller are driven by a drive motor.

[0009] A further improvement is that the cleaning mechanism includes a first cleaning roller brush, a second cleaning roller brush, a lifting drive assembly and a third cleaning roller brush, the first side box having a first cleaning roller brush rotating inside, the second side box having a second cleaning roller brush rotating inside, the lifting drive assembly being installed inside the first side box and the second side box, the third cleaning roller brush being provided with two groups, and both groups of the third cleaning roller brushes being connected to the lifting drive assembly.

[0010] A further improvement is that the first cleaning roller brush and the second cleaning roller brush are both arranged longitudinally and attached to the filter screen, and the third cleaning roller brush is arranged transversely on the lifting drive assembly.

[0011] Further improvements are: the lifting drive assembly includes a screw rod, a guide rod, a first movable beam, a second movable beam and a connecting rod, a screw rod is rotatably provided inside the first side box, the screw rod is driven by a servo motor, guide rods are provided inside the first side box and the second side box on one side of the screw rod, and two groups of guide rods are provided inside the second side box, the first movable beam is threadedly connected to the screw rod, one end of the first movable beam is slidably connected to the guide rod inside the first side box, both ends of the second movable beam are slidably connected to the two groups of guide rods inside the second side box, and the second movable beam is connected to the first movable beam through a connecting rod, the first desulfurization box is provided with a through groove for the connecting rod to move up and down, and the third cleaning roller brush is rotatably arranged at the bottom of the first movable beam and the second movable beam respectively.

[0012] A further improvement is that flushing pipes are installed on the inner walls of the first side box and the second side box, and the flushing pipes are arranged in multiple groups longitudinally. The multiple groups of flushing pipes are provided with flushing nozzles pointing to the filter, and the flushing nozzles are provided in multiple groups.

[0013] A further improvement is that the desulfurization spray mechanism includes a liquid storage tank and a desulfurization spray head. The liquid storage tank is installed above one side of the slow flow plate, and the desulfurization spray head is provided at the bottom of the liquid storage tank. The desulfurization spray head is provided in multiple groups.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a cleaning mechanism for cleaning the filter in the first side box and the second side box, and the filter can be cleaned by the cleaning mechanism without removing the filter during the process, and the filter cleaning operation can be performed without stopping the machine, so that the working efficiency of the desulfurizer can be stably maintained; by providing a plurality of groups of staggered slow flow plates, the flue gas can flow slowly in the second desulfurization box, and the desulfurization spray mechanism provided on the slow flow plate can make the flue gas filtered by the filter fully flushed and desulfurized by the desulfurization spray mechanism in the second desulfurization box, thereby improving the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the front view of the lifting drive component structure of the utility model.

[0017] Wherein: 1. frame; 2. first desulfurization box; 3. second desulfurization box; 4. induced draft fan; 5. exhaust fan; 6. first side box; 7. second side box; 8. filter; 9. cleaning mechanism; 901. first cleaning roller brush; 902. second cleaning roller brush; 903. third cleaning roller brush; 904. screw rod; 905. guide rod; 906. first moving beam; 907. second moving beam; 908. connecting rod; 909. servo motor; 10. slow flow plate; 11. desulfurization spray mechanism; 1101. liquid storage tank; 1102. desulfurization spray head; 12. first transmission roller; 13. second transmission roller; 14. third transmission roller; 15. fourth transmission roller; 16. flushing pipe; 17. flushing nozzle. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0019] according to Figure 1-2 As shown, the present embodiment proposes a desulfurization machine for a power plant, comprising a frame 1, a first desulfurization box 2, a second desulfurization box 3, an induced draft fan 4 and an exhaust fan 5. The first desulfurization box 2 is arranged above the frame 1, and the induced draft fan 4 is installed on the outside of the first desulfurization box 2. The output end of the induced draft fan 4 is connected to the inside of the first desulfurization box 2. The first desulfurization box 2 is provided with a first side box 6 and a second side box 7 on both sides, respectively. The first side box 6 is provided with a first transmission mechanism, and the second side box 7 is provided with a second transmission mechanism. The first transmission mechanism and the second transmission mechanism are provided with a first transmission mechanism. A filter screen 8 is installed, and a cleaning mechanism 9 for cleaning the filter screen 8 is provided in the first side box 6 and the second side box 7. A second desulfurization box 3 is provided above the frame 1 on one side of the first desulfurization box 2. The first desulfurization box 2, the first side box 6 and the second side box 7 are all connected to the second desulfurization box 3. A slow flow plate 10 is provided in the second desulfurization box 3. The slow flow plates 10 are provided in multiple groups, and the multiple groups of slow flow plates 10 are staggered. A desulfurization spray mechanism 11 is installed above one side of the slow flow plate 10, and an exhaust fan 5 is installed on the outlet side of the second desulfurization box 3.

[0020] When the desulfurizer of the utility model desulfurizes and purifies the flue gas generated by the power plant, the flue gas is introduced into the first desulfurization box 2 through the induced draft fan 4. Since the filter screen 8 is arranged around the first transmission roller 12, the second transmission roller 13, the third transmission roller 14 and the fourth transmission roller 15, two filtering interception surfaces can be formed inside the first desulfurization box 2 to fully filter the flue gas. The filtered flue gas enters the second desulfurization box 3 under the action of the exhaust fan 5, and is then intercepted by the slow flow plate 10. The flue gas will be fully flushed and cleaned by the desulfurization spray mechanism 11 in the second desulfurization box 3 (the desulfurization spray mechanism 11 sprays desulfurization liquid to clean the sulfur-containing flue gas), and finally the cleaned flue gas is purified and discharged from the exhaust fan 5. During this process, when the filtering efficiency of the filter 8 decreases and the filter 8 needs to be cleaned, the first transmission roller 12, the second transmission roller 13, the third transmission roller 14 and the fourth transmission roller 15 can be driven by the driving motor to rotate, thereby driving the filter 8 to be transmitted, so that the two filtering interception surfaces of the filter 8 currently adsorbed with impurities are respectively transmitted into the first side box 6 and the second side box 7. During the entry process, the two filtering interception surfaces of the filter 8 currently adsorbed with impurities are cleaned by the first cleaning roller brush 901 and the second cleaning roller brush 902 respectively, and then further brushed and cleaned by the third cleaning roller brush 903 driven by the lifting drive assembly, so as to realize non-stop cleaning of the filter 8.

[0021] The first transmission mechanism includes a first transmission roller 12 and a second transmission roller 13, the second transmission mechanism includes a third transmission roller 14 and a fourth transmission roller 15, the first transmission roller 12 and the second transmission roller 13 are both rotatably mounted inside the first side box 6, the third transmission roller 14 and the fourth transmission roller 15 are both rotatably mounted inside the second side box 7, the filter screen 8 is arranged around the first transmission roller 12, the second transmission roller 13, the third transmission roller 14 and the fourth transmission roller 15, and the first transmission roller 12, the second transmission roller 13, the third transmission roller 14 and the fourth transmission roller 15 are driven by a driving motor. In the utility model, the driving motor for driving the first transmission roller 12, the second transmission roller 13, the third transmission roller 14 and the fourth transmission roller 15 is shown, and the model of the driving motor can be reasonably selected according to actual needs.

[0022] The cleaning mechanism 9 includes a first cleaning roller brush 901, a second cleaning roller brush 902, a lifting drive assembly and a third cleaning roller brush 903. The first side box 6 is provided with a first cleaning roller brush 901 for rotation, and the second side box 7 is provided with a second cleaning roller brush 902 for rotation. The lifting drive assembly is installed inside the first side box 6 and the second side box 7. The third cleaning roller brush 903 is provided with two groups, and both groups of the third cleaning roller brushes 903 are connected to the lifting drive assembly. The first cleaning roller brush 901 and the second cleaning roller brush 902 are both arranged longitudinally and attached to the filter 8, and the third cleaning roller brush 903 is arranged transversely on the lifting drive assembly. The first cleaning roller brush 901 and the second cleaning roller brush 902 are arranged longitudinally and the third cleaning roller brush 903 is arranged transversely to achieve full brushing and cleaning of the filter 8. The first cleaning roller brush 901, the second cleaning roller brush 902 and the third cleaning roller brush 903 of the utility model are all driven by a cleaning motor (not shown in the figure, the model of the cleaning motor can be reasonably selected according to actual needs)

[0023] The lifting drive assembly includes a screw rod 904, a guide rod 905, a first movable beam 906, a second movable beam 907 and a connecting rod 908. A screw rod 904 is rotatably provided inside the first side box 6, and the screw rod 904 is driven by a servo motor 909. Guide rods 905 are provided inside the first side box 6 and the second side box 7 on one side of the screw rod 904. Two groups of guide rods 905 are provided inside the second side box 7. The first movable beam 906 is threadedly connected to the screw rod 904. One end of the first movable beam 906 is slidably connected to the guide rod 905 inside the first side box 6. Both ends of the second movable beam 907 are slidably connected to the two groups of guide rods 905 inside the second side box 7, and the second movable beam 907 is connected to the first movable beam 906 through a connecting rod 908. A through groove for the connecting rod 908 to move up and down is provided on the first desulfurization box 2. The third cleaning roller brush 903 is rotatably arranged at the bottom of the first movable beam 906 and the second movable beam 907, respectively. The servo motor 909 is started to drive the screw rod 904 to rotate, so that the first moving beam 906 and the second moving beam 907 are synchronously lifted and lowered to drive the two sets of third cleaning roller brushes 903 to move up and down to clean the filter screen 8.

[0024] Flushing pipes 16 are installed on the inner walls of the first side box 6 and the second side box 7. The flushing pipes 16 are arranged in a plurality of groups in a longitudinal direction. The plurality of flushing pipes 16 are provided with flushing nozzles 17 directed to the filter screen 8. The flushing nozzles 17 are provided in a plurality of groups. By providing the flushing pipes 16 and the flushing nozzles 17, the filter screen 8 can be flushed before the third cleaning roller brush 903 brushes the filter screen 8. The flushing nozzles 17 cooperate with the third cleaning roller brush 903 to achieve efficient cleaning.

[0025] The desulfurization spray mechanism 11 includes a liquid storage tank 1101 and a desulfurization spray head 1102. The liquid storage tank 1101 is installed above one side of the slow flow plate 10. The desulfurization spray head 1102 is provided at the bottom of the liquid storage tank 1101. The desulfurization spray head 1102 is provided in multiple groups.

[0026] The utility model provides a cleaning mechanism 9 for cleaning the filter 8 in both the first side box 6 and the second side box 7. The filter 8 can be cleaned by the cleaning mechanism 9 without removing the filter 8 during the process. The filter 8 can be cleaned without stopping the machine, so that the working efficiency of the desulfurizer can be stably maintained. By providing a plurality of groups of staggered slow flow plates 10, the flue gas can flow slowly in the second desulfurization box 3. The desulfurization spray mechanism 11 provided on the slow flow plate 10 can ensure that the flue gas filtered by the filter 8 can be fully flushed and desulfurized by the desulfurization spray mechanism 11 in the second desulfurization box 3, thereby improving the desulfurization efficiency.

[0027] The above shows and describes the basic principles, main features and 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 principles 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 desulfurizer for a power plant, characterized by: The invention comprises a frame (1), a first desulfurization box (2), a second desulfurization box (3), an induced draft fan (4) and an exhaust fan (5), wherein the first desulfurization box (2) is arranged above the frame (1), an induced draft fan (4) is installed outside the first desulfurization box (2), an output end of the induced draft fan (4) is connected to the inside of the first desulfurization box (2), a first side box (6) and a second side box (7) are respectively arranged on both sides of the first desulfurization box (2), a first transmission mechanism is arranged inside the first side box (6), a second transmission mechanism is arranged inside the second side box (7), filters (8) are installed on the first transmission mechanism and the second transmission mechanism, and the first side box (6) and the second side box (7) are respectively arranged on both sides of the first desulfurization box (2). A cleaning mechanism (9) for cleaning the filter screen (8) is provided in the box (6) and the second side box (7); a second desulfurization box (3) is provided above the frame (1) on one side of the first desulfurization box (2); the first desulfurization box (2), the first side box (6) and the second side box (7) are all connected to the second desulfurization box (3); a slow flow plate (10) is provided in the second desulfurization box (3); a plurality of groups of slow flow plates (10) are provided, and the plurality of groups of slow flow plates (10) are staggered, and a desulfurization spray mechanism (11) is installed above one side of the slow flow plate (10); an exhaust fan (5) is installed on the outlet side of the second desulfurization box (3).

2. The desulfurizer for a power plant according to claim 1, characterized in that: The first transmission mechanism comprises a first transmission roller (12) and a second transmission roller (13), and the second transmission mechanism comprises a third transmission roller (14) and a fourth transmission roller (15); the first transmission roller (12) and the second transmission roller (13) are both rotatably mounted inside the first side box (6), and the third transmission roller (14) and the fourth transmission roller (15) are both rotatably mounted inside the second side box (7); the filter screen (8) is arranged around the first transmission roller (12), the second transmission roller (13), the third transmission roller (14) and the fourth transmission roller (15); and the first transmission roller (12), the second transmission roller (13), the third transmission roller (14) and the fourth transmission roller (15) are driven by a driving motor.

3. The desulfurizer for a power plant according to claim 1, characterized in that: The cleaning mechanism (9) comprises a first cleaning roller brush (901), a second cleaning roller brush (902), a lifting drive assembly and a third cleaning roller brush (903); the first side box (6) is provided with a first cleaning roller brush (901) for rotation inside, the second side box (7) is provided with a second cleaning roller brush (902) for rotation inside, the lifting drive assembly is installed inside the first side box (6) and the second side box (7), the third cleaning roller brush (903) is provided with two groups, and the two groups of the third cleaning roller brush (903) are connected to the lifting drive assembly.

4. The desulfurizer for a power plant according to claim 3, characterized in that: The first cleaning roller brush (901) and the second cleaning roller brush (902) are both arranged longitudinally and attached to the filter screen (8), and the third cleaning roller brush (903) is arranged transversely on the lifting drive assembly.

5. The desulfurizer for power plant according to claim 4, characterized in that: The lifting drive assembly comprises a screw rod (904), a guide rod (905), a first movable beam (906), a second movable beam (907) and a connecting rod (908); a screw rod (904) is rotatably arranged inside the first side box (6); the screw rod (904) is driven by a servo motor (909); guide rods (905) are arranged inside the first side box (6) and the second side box (7) on one side of the screw rod (904); two groups of guide rods (905) are arranged inside the second side box (7); the screw rod (904) is threadedly connected to the first movable beam (906); and the second movable beam (907) is threadedly connected to the first movable beam (907). 906), one end of the first movable beam (906) is slidably connected to the guide rod (905) inside the first side box (6), the two ends of the second movable beam (907) are slidably connected to the two groups of guide rods (905) inside the second side box (7), and the second movable beam (907) is connected to the first movable beam (906) through a connecting rod (908), and the first desulfurization box (2) is provided with a through groove for the connecting rod (908) to move up and down, and the third cleaning roller brush (903) is rotatably arranged at the bottom of the first movable beam (906) and the second movable beam (907), respectively.

6. The desulfurizer for power plants according to claim 5, characterized in that: Flushing pipes (16) are installed on the inner walls of the first side box (6) and the second side box (7). The flushing pipes (16) are arranged in a plurality of groups in a longitudinal direction. The plurality of groups of flushing pipes (16) are provided with flushing nozzles (17) directed toward the filter screen (8). The flushing nozzles (17) are provided in a plurality of groups.

7. The desulfurizer for a power plant according to claim 1, characterized in that: The desulfurization spray mechanism (11) comprises a liquid storage tank (1101) and a desulfurization spray head (1102). The liquid storage tank (1101) is installed above one side of the slow flow plate (10). The desulfurization spray head (1102) is provided at the bottom of the liquid storage tank (1101). The desulfurization spray head (1102) is provided in multiple groups.

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