Efficient flue gas desulfurization equipment for coal-fired unit

Abstract

The embodiment of the utility model discloses efficient flue gas desulfurization equipment for a coal-fired unit, a sweeping device comprises a sweeping assembly which is arranged in a desulfurization tower and is used for sweeping the bottom end of a filter screen, and a driving assembly which is used for driving the sweeping assembly to reciprocate left and right is arranged in the desulfurization tower. The dust removal device comprises a dust removal assembly used for removing dust of flue gas entering the desulfurization tower, and a first scraping assembly and a second scraping assembly which are used for scraping impurities on the dust removal assembly are arranged in the dust removal assembly. When the motor drives the two-way screw rod I to rotate, the cleaning brush always keeps reciprocating left and right; impurities adsorbed on the filter screen are cleaned and then discharged along the slag discharging pipe; and under the rotation of a two-way screw rod II, a scraping plate can be driven to scrape dust on a dust removal screen plate I, so that dust and impurities filtered on a stainless steel filter screen and a dust removal filter screen can be conveniently cleaned, and the step that the dust removal filter screen needs to be taken out and cleaned by a worker is avoided.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of desulfurization equipment, and in particular to a flue gas high-efficiency desulfurization equipment for a coal-fired unit. Background Art

[0002] Coal-fired machines will produce a large amount of sulfur-containing flue gas when in use, so desulfurization equipment is needed to desulfurize and dust the flue gas, so that the flue gas after dust removal, desulfurization and denitrification can meet the emission standards without causing damage to the atmospheric environment. For example, as shown in a flue gas desulfurization device for coal-fired units with Chinese patent application number CN202022299895.7, a dust removal box is arranged at the entrance of the purification box, and a filter screen 2 is arranged inside the dust removal box. When in use, the flue gas needs to be filtered by the dust removal box before entering the purification box. The dust-containing flue gas in the dust removal box is filtered by the filter screen 2, so that the particulate matter content in the flue gas is reduced, and the concentration of lime water mist caused by the particulate matter is reduced, thereby obtaining a more efficient desulfurization effect.

[0003] However, the filter screen of the existing coal-fired boiler flue gas desulfurization and dust removal equipment is not easy to clean, and the staff needs to take out the dust removal filter screen to clean it, which wastes time and reduces work efficiency. Utility Model Content

[0004] To this end, an embodiment of the utility model provides a high-efficiency flue gas desulfurization device for a coal-fired unit to solve the problem in the prior art that the filter screen of the existing coal-fired boiler flue gas desulfurization and dust removal equipment is not easy to clean, and the staff needs to take out the dust removal filter screen to clean it, which wastes a lot of time and thus reduces work efficiency.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] A high-efficiency flue gas desulfurization device for a coal-fired unit comprises a desulfurization tower, a dust removal device for removing dust from the flue gas is arranged at the left end of the desulfurization tower, a spray device for spraying desulfurization water into the desulfurization tower is arranged at the right side of the desulfurization tower, and a cleaning device for cleaning impurities in the desulfurization tower is arranged in the desulfurization tower.

[0007] A filter screen is fixedly installed in the desulfurization tower for blocking impurities desulfurized in the desulfurization tower.

[0008] The cleaning device comprises a cleaning component arranged in the desulfurization tower for cleaning the bottom end of the filter screen, and a driving component for driving the cleaning component to move back and forth left and right is arranged in the desulfurization tower.

[0009] The dust removal device comprises a dust removal component for removing dust from the flue gas entering the desulfurization tower, and the dust removal component is provided with a scraping component 1 and a scraping component 2 for scraping impurities on the dust removal component.

[0010] Furthermore, an activated carbon adsorption layer for drying the flue gas after desulfurization is arranged on the upper side of the filter, a through hole for communicating with the dust removal component is opened at the left end of the desulfurization tower, and a slide groove for assisting the cleaning component to move left and right is opened on the inner wall of the tower cavity of the desulfurization tower.

[0011] Furthermore, the spraying device includes a storage box fixedly installed on the right end of the desulfurization tower for storing desulfurization water, a water pump for extracting desulfurization water from the storage box is arranged at the top of the storage box, a delivery pipe is arranged at the top of the water pump, and a spray pipe for spraying desulfurization water into the desulfurization tower is fixedly installed at one end of the delivery pipe away from the water pump, and there are three spray pipes.

[0012] Furthermore, the driving assembly includes a bidirectional screw rod 1 arranged in the desulfurization tower for driving the cleaning assembly to reciprocate left and right, the right end of the bidirectional screw rod 1 is fixedly installed with a motor for driving the bidirectional screw rod 1 to rotate, the rod body of the bidirectional screw rod 1 is threadedly connected with a bevel gear 2 for meshing with a scraping assembly 1, the rod body of the bidirectional screw rod 1 is threadedly connected with a bevel gear 1 for meshing with a scraping assembly 2, and the bevel gear 1 is located on the right side of the bevel gear 2, and the left end of the bidirectional screw rod 1 is movably connected with a support frame for supporting the bidirectional screw rod 1.

[0013] Furthermore, the cleaning assembly includes a cleaning brush connected to the bidirectional screw rod, and sliders for sliding in the slide groove are fixedly installed at the front and rear ends of the cleaning brush.

[0014] Furthermore, the dust removal assembly includes a dust removal box fixedly installed on the left end of the desulfurization tower, and the left end of the dust removal box is provided with an air inlet pipe for introducing flue gas into the dust removal box. The inner wall of the box cavity of the dust removal box is provided with a limiting groove for assisting the scraping component 1 and the scraping component 2 to move up and down. The box cavity of the dust removal box is provided with dust removal mesh plate 1 and dust removal mesh plate 2 for dust removal of flue gas, and dust removal mesh plate 1 is located on the left side of dust removal mesh plate 2.

[0015] Furthermore, the scraping assembly 1 includes a bidirectional screw rod 2 arranged in the dust removal box for rotation, a bevel gear 3 for meshing with a bevel gear 2 is fixedly installed on the top of the bidirectional screw rod 2, and a scraper for scraping the dust removal screen 1 is threadedly connected to the rod body of the bidirectional screw rod 2.

[0016] Furthermore, an exhaust pipe for discharging the flue gas after desulfurization in the desulfurization tower is arranged at the top end of the desulfurization tower, and four supporting legs for supporting the desulfurization tower are fixedly installed at the bottom end of the desulfurization tower, and a slag discharge pipe for discharging impurities in the desulfurization tower is arranged at the bottom end of the desulfurization tower.

[0017] The utility model embodiment has the following advantages:

[0018] By arranging a cleaning device and a dust removal device, when it is necessary to clean the impurities adsorbed on the bottom end of the filter screen, the motor can drive the two-way screw rod 1 to rotate, so that the cleaning brush can be made to reciprocate left and right along the rod body of the two-way screw rod 1, and the sliders at the front and rear ends of the cleaning brush can slide in the slide groove, so that the cleaning brush can always keep reciprocating left and right; and the impurities adsorbed on the filter screen are cleaned by the cleaning brush and then discharged along the slag discharge pipe; and then the meshing connection between the bevel gear 2 and the bevel gear 3 can be used to drive the two-way screw rod 2 to rotate, so as to drive the scraper to scrape the dust on the dust removal screen plate 1, so as to facilitate the cleaning of the dust and impurities filtered on the stainless steel filter screen and the dust removal filter screen, and avoid the situation that the staff needs to take out the dust removal filter screen to clean it, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the desulfurization tower of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the spray device of the utility model;

[0024] Figure 4This is a schematic diagram of the structure of the cleaning device of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the dust removal device of the utility model;

[0026] Figure 6 For this utility model Figure 5 Enlarged view of point A in the middle.

[0027] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0028] 100-desulfurization tower, 101-activated carbon adsorption layer, 102-chute, 103-through hole, 104-filter;

[0029] 200-spraying device, 210-storage box, 220-water pump, 230-transport pipe, 240-spraying pipe;

[0030] 300-cleaning device, 310-driving assembly, 311-motor, 312-bidirectional screw rod 1, 313-bevel gear 1, 314-bevel gear 2, 315-support frame, 320-cleaning assembly, 321-cleaning brush, 322-slider;

[0031] 400-dust removal device, 410-dust removal assembly, 411-dust removal box, 412-air intake pipe, 413-restriction slot, 414-dust removal screen plate 1, 415-dust removal screen plate 2, 420-scraping assembly 1, 421-bevel gear 3, 422-bidirectional screw rod 2, 423-scraping plate, 430-scraping assembly 2;

[0032] 001-support leg, 002-slag discharge pipe, 003-exhaust pipe. DETAILED DESCRIPTION

[0033] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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 creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 6 The utility model provides a high-efficiency flue gas desulfurization device for a coal-fired unit.

[0035] The desulfurization tower 100 includes a dust removal device 400 for removing dust from flue gas at the left end thereof, a spray device 200 for spraying desulfurization water into the desulfurization tower 100 is disposed on the right side thereof, and a cleaning device 300 for cleaning impurities in the desulfurization tower 100 is disposed in the desulfurization tower 100.

[0036] An exhaust pipe 003 for discharging the flue gas after desulfurization in the desulfurization tower 100 is provided at the top of the desulfurization tower 100, and a supporting leg 001 for supporting the desulfurization tower 100 is fixedly installed at the bottom end of the desulfurization tower 100, and there are four supporting legs 001. The four supporting legs 001 are distributed in a rectangular array at the four corners of the bottom end of the desulfurization tower 100, so that the desulfurization tower 100 can be supported by the four supporting legs 001; a slag discharge pipe 002 for discharging impurities in the desulfurization tower 100 is provided at the bottom end of the desulfurization tower 100.

[0037] A filter screen 104 is fixedly installed in the desulfurization tower 100 for blocking impurities desulfurized in the desulfurization tower 100, and an activated carbon adsorption layer 101 is arranged on the upper side of the filter screen 104 for drying the flue gas after desulfurization. A through hole 103 for communicating with the dust removal component 410 is provided at the left end of the desulfurization tower 100, so that the flue gas dedusted by the dust removal device 400 can enter the desulfurization tower 100 through the through hole 103; a slide groove 102 for assisting the cleaning component 320 to move left and right is provided on the inner wall of the tower cavity of the desulfurization tower 100, and the slide groove 102 is located between the filter screen 104 and the activated carbon adsorption layer 101.

[0038] The spraying device 200 includes a storage box 210 fixedly installed at the right end of the desulfurization tower 100 for storing desulfurized water. A water pump 220 for extracting desulfurized water from the storage box 210 is provided at the top of the storage box 210. A delivery pipe 230 is provided at the top of the water pump 220. A spray pipe 240 for spraying desulfurized water into the desulfurization tower 100 is fixedly installed at one end of the delivery pipe 230 away from the water pump 220. There are three spray pipes 240. The spray pipes 240 are distributed in a linear array in the desulfurization tower 100; at the same time, a spray head is provided at the bottom end of the spray pipe 240 to spray the desulfurization water stored in the storage box 210 into the desulfurization tower 100, so that the flue gas entering the desulfurization tower 100 can be desulfurized, and the impurities of the flue gas desulfurization can be adsorbed through the filter 104; the desulfurized flue gas is then dried by the activated carbon adsorption layer 101, and then discharged through the exhaust pipe 003.

[0039] The cleaning device 300 includes a cleaning assembly 320 disposed in the desulfurization tower 100 for cleaning the bottom end of the filter screen 104 , and a driving assembly 310 for driving the cleaning assembly 320 to reciprocate left and right is disposed in the desulfurization tower 100 .

[0040] The driving assembly 310 includes a bidirectional screw rod 312 arranged in the desulfurization tower 100 for driving the cleaning assembly 320 to reciprocate left and right, and the left and right ends of the bidirectional screw rod 312 are connected to the desulfurization tower 100 through bearings to facilitate the rotation of the bidirectional screw rod 312; the right end of the bidirectional screw rod 312 is fixedly installed with a motor 311 for driving the bidirectional screw rod 312 to rotate, and the rod body of the bidirectional screw rod 312 is threadedly connected with a bevel gear 314 for meshing with the scraping assembly 420, and the rod body of the bidirectional screw rod 312 is threadedly connected with a bevel gear 313 for meshing with the scraping assembly 430, and the bevel gear 313 is located on the right side of the bevel gear 314, and the left end of the bidirectional screw rod 312 is movably connected with a support frame 315 for supporting the bidirectional screw rod 312.

[0041] The cleaning component 320 includes a cleaning brush 321 threadedly connected to a bidirectional screw rod 312, and sliders 322 for sliding in the slide groove 102 are fixedly installed at the front and rear ends of the cleaning brush 321; therefore, when it is necessary to clean the impurities adsorbed on the bottom end of the filter screen 104, the bidirectional screw rod 312 can be driven to rotate by the motor 311, so that the cleaning brush 321 can reciprocate left and right along the rod body of the bidirectional screw rod 312, and the sliders 322 at the front and rear ends of the cleaning brush 321 can slide in the slide groove 102, so that the cleaning brush 321 always keeps reciprocating left and right; and the impurities adsorbed on the filter screen 104 are cleaned by the cleaning brush 321 and then discharged along the slag discharge pipe 002.

[0042] The dust removal device 400 includes a dust removal component 410 for removing dust from the flue gas entering the desulfurization tower 100. The dust removal component 410 is provided with a scraping component 1 420 and a scraping component 2 430 for scraping impurities on the dust removal component 410. The structure of the scraping component 1 420 is the same as that of the scraping component 2 430. Therefore, this application only introduces the scraping component 1 420.

[0043] The dust removal assembly 410 includes a dust removal box 411 fixedly installed on the left end of the desulfurization tower 100, and an air inlet pipe 412 for introducing flue gas into the dust removal box 411 is provided at the left end of the dust removal box 411. A limiting groove 103 for assisting the scraping assembly 1 420 and the scraping assembly 2 430 to move up and down is provided on the inner wall of the box cavity of the dust removal box 411. A dust removal mesh plate 1 414 and a dust removal mesh plate 2 415 for dust removal of flue gas are provided in the box cavity of the dust removal box 411, and the dust removal mesh plate 1 414 is located on the left side of the dust removal mesh plate 2 415.

[0044] The scraping assembly 420 includes a two-way screw rod 422 arranged in the dust removal box 411 for rotation, and the rod body of the two-way screw rod 422 is connected to the top of the dust removal box 411 through a bearing to facilitate the rotation of the two-way screw rod 422; the top of the two-way screw rod 422 is fixedly installed with a bevel gear 3 421 for meshing with the bevel gear 314, and the rod body of the two-way screw rod 422 is threaded with a scraper 423 for scraping the dust removal mesh plate 414; then, by utilizing the meshing connection between the bevel gear 314 and the bevel gear 3 421, the two-way screw rod 422 can be driven to rotate, and the scraper 423 can be driven to scrape the dust on the dust removal mesh plate 414, which can facilitate cleaning of dust and impurities filtered on the stainless steel filter and the dust removal filter, avoiding the need for staff to take out the dust removal filter before cleaning it, thereby improving work efficiency.

[0045] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A high-efficiency flue gas desulfurization device for a coal-fired unit, comprising a desulfurization tower (100), characterized in that: A dust removal device (400) for removing dust from flue gas is disposed at the left end of the desulfurization tower (100), a spray device (200) for spraying desulfurization water into the desulfurization tower (100) is disposed at the right side of the desulfurization tower (100), and a cleaning device (300) for cleaning impurities in the desulfurization tower (100) is disposed in the desulfurization tower (100); A filter screen (104) is fixedly installed in the desulfurization tower (100) for blocking impurities desulfurized in the desulfurization tower (100); The cleaning device (300) comprises a cleaning component (320) arranged in the desulfurization tower (100) for cleaning the bottom end of the filter screen (104); the desulfurization tower (100) is provided with a driving component (310) for driving the cleaning component (320) to move back and forth. The dust removal device (400) comprises a dust removal component (410) for removing dust from flue gas entering a desulfurization tower (100), wherein a scraping component 1 (420) and a scraping component 2 (430) for scraping impurities on the dust removal component (410) are arranged in the dust removal component (410).

2. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 1, characterized in that: An activated carbon adsorption layer (101) for drying the flue gas after desulfurization is arranged on the upper side of the filter (104), a through hole (103) for communicating with the dust removal component (410) is opened at the left end of the desulfurization tower (100), and a slide groove (102) for assisting the cleaning component (320) to move left and right is opened on the inner wall of the tower cavity of the desulfurization tower (100).

3. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 1, characterized in that: The spraying device (200) comprises a storage box (210) fixedly mounted on the right end of the desulfurization tower (100) for storing desulfurized water, a water pump (220) for extracting desulfurized water from the storage box (210) is arranged at the top of the storage box (210), a delivery pipe (230) is arranged at the top of the water pump (220), and a spray pipe (240) for spraying desulfurized water into the desulfurization tower (100) is fixedly mounted at one end of the delivery pipe (230) away from the water pump (220), and there are three spray pipes (240).

4. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 1, characterized in that: The driving assembly (310) comprises a bidirectional screw rod (312) arranged in the desulfurization tower (100) for driving the cleaning assembly (320) to reciprocate left and right, a motor (311) for driving the bidirectional screw rod (312) to rotate is fixedly mounted on the right end of the bidirectional screw rod (312), a bevel gear (314) for meshing with a scraping assembly (420) is threadedly connected to the rod body of the bidirectional screw rod (312), a bevel gear (313) for meshing with a scraping assembly (430) is threadedly connected to the rod body of the bidirectional screw rod (312), and the bevel gear (313) is located on the right side of the bevel gear (314), and the left end of the bidirectional screw rod (312) is movably connected to a support frame (315) for supporting the bidirectional screw rod (312).

5. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 4, characterized in that: The cleaning assembly (320) comprises a cleaning brush (321) threadedly connected to a bidirectional screw rod (312), and sliding blocks (322) for sliding in a slide groove (102) are fixedly mounted at the front and rear ends of the cleaning brush (321).

6. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 4, characterized in that: The dust removal component (410) comprises a dust removal box (411) fixedly mounted on the left end of the desulfurization tower (100); an air inlet pipe (412) for introducing flue gas into the dust removal box (411) is disposed at the left end of the dust removal box (411); a limiting groove (413) for assisting the scraping component 1 (420) and the scraping component 2 (430) to move up and down is disposed on the inner wall of the box cavity of the dust removal box (411); a dust removal mesh plate 1 (414) and a dust removal mesh plate 2 (415) for removing dust from the flue gas are disposed in the box cavity of the dust removal box (411); and the dust removal mesh plate 1 (414) is located on the left side of the dust removal mesh plate 2 (415).

7. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 6, characterized in that: The scraping assembly 1 (420) includes a bidirectional screw rod 2 (422) arranged in the dust removal box (411) for rotation, a bevel gear 3 (421) for meshing with a bevel gear 2 (314) is fixedly installed on the top of the bidirectional screw rod 2 (422), and a scraper (423) for scraping the dust removal screen plate 1 (414) is threadedly connected to the rod body of the bidirectional screw rod 2 (422).

8. The high-efficiency flue gas desulfurization equipment for coal-fired units according to claim 1, characterized in that: The top of the desulfurization tower (100) is provided with an exhaust pipe (003) for discharging the flue gas after desulfurization in the desulfurization tower (100), the bottom of the desulfurization tower (100) is fixedly installed with support legs (001) for supporting the desulfurization tower (100), and there are four support legs (001), and the bottom of the desulfurization tower (100) is provided with a slag discharge pipe (002) for discharging impurities in the desulfurization tower (100).

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