Flue gas treatment device and method for thermal power plant

Abstract

The invention discloses a thermal power plant flue gas treatment device and method, and relates to the related field of flue gas treatment devices, the thermal power plant flue gas treatment device comprises a treatment box, a gas outlet, a gas inlet, a separation net, a cylinder and an auxiliary treatment mechanism. The auxiliary treatment mechanism is mounted at the upper end in the treatment box and is driven by an independent air cylinder, an internal lifting shifting mechanism can be driven to perform transmission in the driving process, an internal rotating frame can be driven to rotate in the transmission process, the flow speed of internal flue gas is increased, and impurity particles of the flue gas are adsorbed; the water spraying pieces at the two ends can also rotate, and large-range spraying is conducted on the interior of the treatment box; the mechanism can move up and down when moving so as to act on the scraping and sweeping ring to move, the scraping and sweeping ring can scrape off attachments on the inner wall of the treatment box, follow-up manual cleaning is reduced, and the flue gas treatment effect and efficiency are effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of flue gas treatment devices, and particularly to a flue gas treatment device and method for a thermal power plant. Background Art

[0002] Flue gas treatment in a thermal power plant refers to the process of purifying and treating the flue gas discharged from a thermal power plant. These flue gases contain various pollutants such as sulfur dioxide, nitrogen oxides, particulate matter, etc., which need to be removed or transformed through different technical means to meet the requirements of environmental protection and pollution control. Common treatment methods include flue gas desulfurization, denitrification, dust removal, etc. Through these technologies, the concentration of pollutants discharged can be effectively reduced, protecting the atmospheric environment and human health.

[0003] A flue gas treatment device and method with the Chinese patent application number: CN202411415501.6, belonging to the technical field of flue gas purification treatment, includes a reaction cylinder. A partition is horizontally fixed at the middle position inside the reaction cylinder, dividing the reaction cylinder into upper and lower treatment chambers. An air inlet seat is arranged in the lower treatment chamber. A gas inlet pipe is horizontally connected to the outside of the air inlet seat, and a centrifugal separator is hermetically connected below the air inlet seat; a gas washing unit is also arranged in the lower treatment chamber, and the gas washing unit is connected to each exhaust channel of the centrifugal separator; a catalytic reduction device is arranged in the upper treatment chamber; a gas guiding chamber is arranged above the inside of the reaction cylinder, and a discharge cylinder is vertically arranged above the gas guiding chamber. A fan blade is installed in the discharge cylinder. The present invention can divide the pretreated flue gas into multiple strands, so as to flexibly wash the gas by different gas washing chambers in the gas washing unit, optimizing the desulfurization purification process.

[0004] The above patent and the prior art have the following problems in actual use: During the treatment process, an external extraction pump is needed to increase the air flow rate, increasing the cost, and the spraying position is fixed, resulting in a weak overall treatment effect. Summary of the Invention

[0005] Therefore, to solve the above deficiencies, the present invention provides a flue gas treatment device and method for a thermal power plant.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A flue gas treatment device and method for a thermal power plant includes a treatment box. Air outlet ports are installed at the upper ends on both sides of the treatment box, an air inlet is arranged at the lower end of the back of the treatment box, a partition net is installed at the lower end inside the treatment box, and an auxiliary treatment mechanism is arranged at the upper end inside the treatment box. The auxiliary treatment mechanism is used to assist in treating the flue gas, and a cylinder for driving is installed at the top of the auxiliary treatment mechanism.

[0007] Preferably, the auxiliary processing mechanism includes a top plate installed at the upper end of the processing box, water pipes provided at both ends of the top of the top plate, a pillar provided in the middle of the top of the top plate, a toggle wheel installed on the top of the pillar, a connecting shaft provided in the middle of the toggle wheel, a lifting and toggle mechanism installed at the right end of the top of the top plate, a limiting mechanism connected to the right front end of the top of the top plate, a guide rod passing through the left end of the top plate, a scraping ring connected to the bottom of the guide rod, a water spraying member provided at the bottom of the top plate and corresponding to the water pipe, a rotating frame provided at the bottom of the top plate and connected to the connecting shaft, and an adsorption filter provided in the middle of the rotating frame, the top of the lifting and toggle mechanism is connected to the cylinder, and the bottom of the lifting and toggle mechanism passes through the top plate and is connected to the top of the scraping ring.

[0008] Preferably, the outer side of the scraper ring contacts the inner side of the processing box.

[0009] Preferably, the water spraying member is in the shape of an elongated strip, and water spraying holes are provided on all four sides of the member.

[0010] Preferably, a driving gear is provided in the middle of the top plate, the middle of the driving gear is connected to the connecting shaft, the left and right sides of the driving gear are meshed with driven gears, the middle of the driven gear is installed with a connecting sleeve, the top of the connecting sleeve is connected to the water pipe, and the bottom is connected to the water spraying part.

[0011] Preferably, the lifting and toggling mechanism includes a support fixed at the top right end of the top plate, a mounting plate provided on the support and connected to the cylinder at the top, a slider provided inside the support and connected to the ejection rod at the bottom of the cylinder, a sliding member provided on the left side of the slider, a guide member installed at the front and rear ends of the support, a moving block provided at the left end inside the guide member, a guide column provided on the right side of the moving block and connected to the sliding member, a stabilizing plate fixed on the left side of the moving block, a clamping block hinged inside the stabilizing plate, a first spring provided on the right side of the clamping block and connected to the moving block, and a pressure rod installed at the bottom of the slider, the bottom of the pressure rod passes through the top plate and is connected to the scraping ring.

[0012] Preferably, an inclined strip groove is provided in the middle of the sliding member, and the guide post is movably embedded in the strip groove.

[0013] Preferably, the left side of the card block is hook-shaped.

[0014] Preferably, the limiting mechanism includes a base for support and installed on the top of the top plate, a second spring provided inside the base, a top block connected to the top of the second spring, and a limiting column fixed to the top of the top block.

[0015] Preferably, the top edge of the limiting column is chamfered.

[0016] Beneficial effects of the present invention: The present invention installs an auxiliary processing mechanism at the upper end of the treatment box, which is driven by an independent cylinder. During the driving process, it can drive the internal lifting and toggle mechanism to transmit the information. During the transmission, it can drive the internal rotating frame to rotate, thereby increasing the internal flue gas flow rate and adsorbing its impurity particles, and the water spraying parts at both ends can also rotate to spray the inside of the treatment box over a large area; the mechanism can move up and down during movement, thereby acting on the scraping ring to scrape off the attachments on the inner wall of the treatment box, reducing subsequent manual cleaning, and effectively improving the effect and efficiency of flue gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the auxiliary processing mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the top plate of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the lifting and toggling mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the moving block of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the limiting mechanism of the present invention.

[0023] Among them: processing box-1, air outlet-2, air inlet-3, partition-4, cylinder-5, auxiliary processing mechanism-6, top plate-61, water connecting pipe-62, support-63, toggle wheel-64, connecting shaft-65, lifting and toggle mechanism-66, limiting mechanism-67, guide rod-68, scraping ring-69, water spraying part-610, rotating frame-611, adsorption filter-612, driving gear-61a, driven gear-61b, connecting sleeve-61c, support-661, mounting plate-662, slider-663, sliding part-664, guide part-665, moving block-666, guide column-666a, stabilizing plate-667, clamping block-668, first spring-669, pressure rod-6610, base-671, second spring-672, top block-673, limiting column-674. DETAILED DESCRIPTION

[0024] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0025] See also Figure 1The present invention provides a flue gas treatment device for a thermal power plant, comprising a treatment box 1, air outlets 2 being locked at the upper ends of the left and right sides of the treatment box 1, air inlets 3 being opened at the left and right positions of the lower end of the back of the treatment box 1, a partition net 4 for filtering water being embedded in the middle of the bottom end of the treatment box 1, an auxiliary treatment mechanism 6 for auxiliary treatment of flue gas being installed at the upper end of the treatment box 1, a cylinder 5 being installed at the top of the auxiliary treatment mechanism 6, and the auxiliary treatment mechanism 6 moving with the push of the cylinder.

[0026] See also Figure 2 The auxiliary processing mechanism 6 includes a top plate 61 for support. Water pipes 62 are installed at the left and right ends of the top of the top plate 61. The water pipes 62 can be connected to external water injection equipment. A pillar 63 is welded to the middle of the top of the top plate 61. A toggle wheel 64 is provided on the top of the pillar 63. A connecting shaft 65 is installed in the middle of the toggle wheel 64. The bottom of the connecting shaft 65 passes through the pillar 63 and the bottom of the top plate 61. A lifting and toggle mechanism 66 is installed on the right end of the top of the top plate 61. The top of the lifting and toggle mechanism 66 is connected to the cylinder 5. A limiting mechanism 67 is installed on the right front end of the top of the top plate 61. The limiting mechanism 67 is used to limit the outer side of the toggle wheel 64. The left end of the top plate 61 is penetrated by the guide rod 68, and the bottom of the lifting and toggle mechanism 66 also penetrates the bottom of the top plate 61. The guide rod 68 and the bottom of the lifting and toggle mechanism 66 are connected to the scraping ring 69. A water spraying part 610 is installed at the bottom of the top plate 61 corresponding to the water pipe 62. A rotating frame 611 with a top connected to the connecting shaft 65 is provided in the middle of the bottom end of the top plate 61. An adsorption filter screen 612 is embedded in the rotating frame 611. The outer side of the top plate 61 is fixed to the upper end of the processing box 1, and the outer side of the scraping ring 69 contacts the inner wall of the processing box 1.

[0027] See also Figure 3 A driving gear 61a is provided in the middle of the top plate 61, and the middle of the driving gear 61a is connected to the connecting shaft 65. The left and right sides of the driving gear 61a are meshed with driven gears 61b. A connecting sleeve 61c is installed in the middle of the driven gear 61b. The top of the connecting sleeve 61c is connected to the water pipe 62, and the bottom is connected to the water spraying member 610. The water spraying member 610 is long and has water spraying holes on all four sides.

[0028] See also Figure 4 and Figure 5, the lifting and toggling mechanism 66 includes a support 661 vertically fixed to the right end of the top of the top plate 61. A guide groove is provided in the middle of the support 661. An installation plate 662 for connecting the cylinder 5 is welded to the top of the support 661. A slider 663 is movably embedded in the guide groove. The top of the slider 663 is connected to the push rod at the bottom of the cylinder 5. A sliding member 664 is locked at the front end of the slider 663. A strip-shaped groove in an inclined shape is provided in the middle of the sliding member 664. A C-shaped guide member 665 is locked at the front and rear positions of the support 661. A moving block 666 is movably embedded in the guide member 665. The right side of the moving block 666 is movably embedded into the strip-shaped groove through a guide post 666a. Fixing plates 667 are fixed to the upper and lower ends on the left side of the guide post 666a. There is a distance between the two groups of fixing plates 667. And a latch 668 is hinged to the inner side of the fixing plate 667. The left side of the latch 668 is hook-shaped and can be caught between the outer convex teeth of the toggle wheel 64. The right side of the latch 668 is connected to the moving block 666 through a first spring 669, which is convenient for stable reset. A pressure rod 6610 is fixed to the bottom of the slider 663. The bottom of the pressure rod 6610 passes through the top plate 61 and then connects to the scraping ring 69. The scraping ring 69 moves up and down under the action of the pressure rod 6610.

[0029] Please refer to Figure 6 , the limiting mechanism 67 includes a base 671 locked to the top of the top plate 61 for support. A groove is provided at the upper end of the base 671. A second spring 672 is fixed to the bottom of the groove. A top block 673 is fixed to the top of the second spring 672. A limiting post 674 is installed on the top of the top block 673. The top edge of the limiting post 674 is chamfered, and the limiting post 674 can be movably embedded between the outer convex teeth of the toggle wheel 64.

[0030] The specific implementation process is as follows: When it is necessary to treat the flue gas, first connect the flue gas pipeline to the air inlet 3, and then connect the external spray water supply mechanism to the water connection pipe 62. After water is injected into the water connection pipe 62, it is sprayed out through the water spraying member 610 at the bottom of the top plate 61. After spraying, the flue gas entering the treatment tank 1 is sprayed and treated; Then start the cylinder 5 to work. The push rod at the bottom of the cylinder 5 acts on the slider 663, and the slider 663 can move downward in the support 661. During the movement, the pressure rod 6610 at the bottom moves downward and acts on the scraping ring 69. The left end of the scraping ring 69 can scrape the inside of the treatment tank 1 under the guiding action of the guide rod 68 to avoid impurity accumulation; When the cylinder 5 reciprocates and the push rod at the bottom moves upward, the sliding member 664 at the front end of the slider 663 moves with it, which can act on the guide column 666a, so that the moving block 666 moves in the guide member 665. During the movement, the block 668 at the left end can toggle the toggle wheel 64, and the toggle wheel 64 starts to rotate. The connecting shaft 65 in the middle rotates, and the rotating frame 611 is toggled during the rotation. During the rotation of the rotating frame 611, the adsorption filter 612 increases the flow rate of the flue gas in the treatment box 1 and adsorbs the impurity particles inside. During the rotation of the connecting shaft 65, the driving gear 61a can be rotated, and the driven gears 61b on both sides of the driving gear 61a follow the rotation. During the rotation of the driven gear 61b, the connecting sleeve 61c can be driven to rotate the water spraying member 610 to perform a large-scale spraying. When the cylinder 5 reciprocates, the toggle wheel 64 is intermittently toggled by the block 668, and when the toggle wheel 64 rotates, it is stably limited by the limit column 674 to avoid deviation.

[0031] The above description is merely 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flue gas treatment device and method for a thermal power plant, characterized in that: It includes a processing box, with air outlets installed on the upper ends of both sides of the processing box, an air inlet set at the lower end of the back of the processing box, a partition screen installed at the lower end of the processing box, and an auxiliary processing mechanism set at the upper end of the processing box. The auxiliary processing mechanism is used to assist in the treatment of flue gas, and a cylinder for driving is installed on the top of the auxiliary processing mechanism.

2. The flue gas treatment device and method for a thermal power plant according to claim 1, characterized in that: The auxiliary processing mechanism includes a top plate installed at the upper end of the processing box, water pipes provided at both ends of the top of the top plate, a pillar provided in the middle of the top of the top plate, a toggle wheel installed on the top of the pillar, a connecting shaft provided in the middle of the toggle wheel, a lifting and toggle mechanism installed at the right end of the top of the top plate, a limiting mechanism connected to the right front end of the top of the top plate, a guide rod passing through the left end of the top plate, a scraping ring connected to the bottom of the guide rod, a water spraying part provided at the bottom of the top plate and corresponding to the water pipe, a rotating frame provided at the bottom of the top plate and connected to the connecting shaft, and an adsorption filter provided in the middle of the rotating frame. The top of the lifting and toggle mechanism is connected to the cylinder, and the bottom of the lifting and toggle mechanism passes through the top plate and is connected to the top of the scraping ring.

3. The flue gas treatment device and method for a thermal power plant according to claim 2, characterized in that: The outer side of the scraper ring contacts the inner side of the processing box.

4. The flue gas treatment device and method for a thermal power plant according to claim 3, characterized in that: The water spraying member is in the shape of an elongated strip, and water spraying holes are provided on all four sides of the member.

5. The flue gas treatment device and method for a thermal power plant according to claim 3, characterized in that: A driving gear is provided in the middle of the top plate, the middle of the driving gear is connected to the connecting shaft, the left and right sides of the driving gear are meshed with driven gears, the middle of the driven gear is installed with a connecting sleeve, the top of the connecting sleeve is connected to the water pipe, and the bottom is connected to the water spraying part.

6. The flue gas treatment device and method for a thermal power plant according to claim 2, characterized in that: The lifting and lowering mechanism includes a support fixed at the top right end of the top plate, a mounting plate arranged on the support and connected to the cylinder at the top, a slider arranged inside the support and connected to the ejection rod at the bottom of the cylinder, a sliding part arranged on the left side of the slider, a guide part installed at the front and rear ends of the support, a moving block arranged at the left end inside the guide part, a guide column arranged on the right side of the moving block and connected to the sliding part, a stabilizing plate fixed on the left side of the moving block, a clamping block hinged inside the stabilizing plate, a first spring arranged on the right side of the clamping block and connected to the moving block, and a pressure rod installed at the bottom of the slider, the bottom of the pressure rod passes through the top plate and is connected to the scraping ring.

7. The flue gas treatment device and method for a thermal power plant according to claim 6, characterized in that: An inclined strip groove is provided in the middle of the sliding member, and the guide post is movably embedded in the strip groove.

8. The flue gas treatment device and method for a thermal power plant according to claim 7, characterized in that: The left side of the card block is hook-shaped.

9. The flue gas treatment device and method for a thermal power plant according to claim 2, characterized in that: The limiting mechanism includes a base for supporting and installed on the top of the top plate, a second spring arranged inside the base, a top block connected to the top of the second spring, and a limiting column fixed on the top of the top block.

10. The flue gas treatment device and method for a thermal power plant according to claim 9, characterized in that: The top edge of the limiting column is chamfered.

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