Energy-saving and consumption-reducing transformation method for environmental protection system of thermal power generating unit

Abstract

The invention relates to the technical field of energy conservation of environmental protection systems, and discloses an energy-saving and consumption-reducing transformation method for an environmental protection system of a thermal power generating unit, which comprises a shell, a combustion furnace is arranged in the shell, an arc-shaped boss is arranged at the bottom end of the combustion furnace, and a combustion-supporting air supply assembly is arranged on the outer side of the bottom end of the combustion furnace. The combustion air supply assembly comprises a central air supply column arranged in the center of the top end of the arc-shaped boss, the lower end of the central air supply column extends to the lower end of the arc-shaped boss and is connected with a conical air pipe, the lower end of the conical air pipe is connected with a transfer conveying pipeline, and the lower end of the transfer conveying pipeline is in butt joint with a main pipeline; the problems that a traditional combustion chamber is uneven in ventilation and fire coal is stacked and compacted are solved by adopting bidirectional air supply of central radial and axial side air outlets and omnibearing disturbance of the lifting stirring assembly on a coal seam, so that sufficient oxygen supply is obtained from the center to the edge of the fire coal, the combustion efficiency is improved, and the combustion efficiency is improved. The combustion sufficiency is greatly improved, and the core targets of energy conservation and consumption reduction of an environmental protection system are achieved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving technology for environmental protection systems, specifically a method for energy-saving and consumption-reducing retrofitting of environmental protection systems for thermal power units. Background Technology

[0002] In the field of energy-saving technology for environmental protection systems, the combustion chamber of the current traditional boiler, as the core equipment for coal-fired energy conversion, directly affects the energy utilization efficiency and environmental governance effect of the unit.

[0003] However, in actual coal combustion, after the coal is fed to the grate by the coal feeding system, uneven coal distribution leads to natural accumulation. The ventilation path within the coal seam is limited, and simply introducing oxygen from one direction results in a large amount of coal being in an oxygen-deficient environment for an extended period, preventing sufficient oxidation and combustion. This incomplete combustion not only prevents the full release of energy from the coal but also leaves a large amount of unburned carbon in the ash, causing unnecessary waste of valuable fuel resources and contradicting the core objective of energy conservation and emission reduction in thermal power units.

[0004] Therefore, the applicant proposes a method for energy-saving and consumption-reducing retrofitting of the environmental protection system of thermal power units. Summary of the Invention

[0005] The purpose of this invention is to provide a method for energy-saving and consumption-reducing retrofitting of environmental protection systems in thermal power units, addressing the following technical problem: In the actual coal combustion heat release process, after the coal is transported to the grate by the coal feeding system, uneven coal distribution leads to a natural accumulation state. The ventilation path inside the coal bed is limited, and simply introducing oxygen from one direction results in a large amount of coal being in an oxygen-deficient environment for a long time, preventing sufficient oxidation and combustion reactions. This incomplete combustion not only prevents the full release of energy from the coal but also leaves a large amount of unburned carbon in the ash discharged after combustion, causing unnecessary waste of valuable fuel resources, which contradicts the core objective of energy-saving and consumption-reducing retrofitting of thermal power units.

[0006] The objective of this invention can be achieved through the following technical solutions: A method for energy-saving and consumption-reducing retrofit of an environmental protection system for a thermal power unit includes a shell, a combustion furnace is provided inside the shell, an arc-shaped protrusion is provided at the bottom end of the combustion furnace, and a combustion-supporting air supply component is provided on the outer side of the bottom of the combustion furnace. The combustion-supporting air supply assembly includes a central air supply column coaxially disposed at the top of the arc-shaped boss. The lower end of the central air supply column extends to the lower end of the arc-shaped boss and is connected to a conical air duct. The lower end of the conical air duct is connected to a transfer and conveying pipe. Both ends of the transfer and conveying pipe extend into the air supply cavity that is closed between the combustion furnace and the shell. The lower end of the transfer and conveying pipeline is connected to the main pipeline, and one end of the main pipeline extends to the outside of the shell and is equipped with a blower. The central air supply column has multiple central radial air outlets on its cylindrical sidewall, and the combustion furnace has multiple axial side air outlets on its circumferential sidewall.

[0007] As a further aspect of the present invention, the surface of the arc-shaped boss is provided with a ring array of multiple ash-leaking holes.

[0008] As a further aspect of the present invention: a flushing assembly is provided on the outer side of the bottom of the combustion furnace, the flushing assembly including a water inlet pipe provided on one side of the transfer and conveying pipeline; One end of the water inlet pipe extends to the outside of the housing and is provided with a water delivery pipe. One end of the water delivery pipe is connected to a water pump, and one end of the water pump is connected to a water suction pipe through a flange.

[0009] As a further aspect of the present invention: a second solenoid valve is provided on the outer surface of the water delivery pipe.

[0010] As a further aspect of the present invention: an ash collection assembly is provided at the bottom of the combustion furnace; The ash collection assembly includes an arc-shaped ash guiding concave surface disposed at the lower end of the combustion furnace, and a supporting base plate is disposed at the lower end of the arc-shaped ash guiding concave surface; A drive motor is provided on the upper surface of the support base plate. The output shaft of the drive motor extends into the inner cavity of the arc-shaped ash guiding concave surface and is provided with an ash cleaning rod. An arc-shaped rod is fixedly provided on the outer surface of the ash cleaning rod. A collection frame is slidably engaged in the bottom inner cavity of the combustion furnace.

[0011] As a further aspect of the present invention: the arc-shaped rod is in close contact with the inner arc surface of the arc-shaped guide concave surface.

[0012] As a further aspect of the present invention: a lifting and stirring assembly is provided inside the housing; The lifting and stirring assembly includes a connecting sleeve rotatably disposed at the top of the housing, a stirring rod disposed in the middle of the connecting sleeve, and one end of the stirring rod extending into the interior of the housing and provided with a stirring frame; The upper end of the stirring rod is rotatably equipped with a lifting cylinder.

[0013] As a further embodiment of the present invention: symmetrical guide grooves are provided at the connection between the connecting sleeve and the stirring rod, and guide rods are fixedly provided in both guide grooves on the outer surface of the stirring rod; The outer surface of the connecting sleeve is provided with a driven gear, and a driving gear is meshed on one side of the driven gear; The upper end of the housing is provided with a mounting box, and the inner cavity of the mounting box is provided with a servo motor connected to the drive gear.

[0014] As a further embodiment of the present invention: a scraper is provided on one side of the stirring frame; The scraper is in close contact with the inner wall of the combustion furnace.

[0015] As a further aspect of the present invention: the lower end of the stirring frame is an arc-shaped end face, and it is in close contact with the upper surface of the arc-shaped boss.

[0016] The beneficial effects of this invention are: (1) This invention constructs a three-dimensional air supply structure that coordinates the central radial and axial sides by setting an arc-shaped protrusion, combined with a coaxially arranged central air supply column and an axial side air outlet on the circumferential side wall of the combustion furnace. At the same time, it combines a stirring frame with lifting and rotating functions to break the limitations of traditional single air supply and static coal seam in terms of structure: the arc-shaped protrusion optimizes the coal laying shape and guides the coal ash to slide down, the three-dimensional air supply realizes uniform oxygen supply throughout the coal seam, and the lifting and stirring components completely eliminate the problem of coal accumulation and compaction. Through synergistic effect, it fundamentally improves the fullness of coal combustion, reduces unburned carbon residue, and directly achieves the core goal of energy saving and consumption reduction. (2) The present invention forms a closed loop for impurity treatment by integrating the flushing component and the ash collection component. The flushing component uses the diversion structure of the combustion air supply channel to flush the central radial air outlet, the axial side air outlet and the inner wall of the combustion furnace, thus avoiding the blockage of the ventilation channel. The ash collection component uses the guiding structure of the arc-shaped ash guiding concave surface and the fitting rotating ash cleaning rod, in conjunction with the sliding collection frame, to achieve efficient collection, scraping and collection of coal ash. From the structural level, it ensures the long-term clean operation of the combustion system and significantly improves the stability and sustainability of the environmental protection system.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the combustion-supporting air supply component of the present invention; Figure 3 This is a schematic diagram of the rinsing assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the dust collection component of the present invention; Figure 5 This is a partial structural schematic diagram of the dust collection component of the present invention; Figure 6 This is a schematic diagram of the lifting and stirring assembly of the present invention; Figure 7This is a schematic diagram of the guide groove and guide rod of the present invention.

[0020] In the diagram: 100, shell; 101, combustion furnace; 102, arc-shaped boss; 103, ash leakage hole; 200, combustion-supporting air supply assembly; 201, central air supply column; 202, conical air duct; 203, transfer and conveying pipeline; 204, main pipeline; 205, blower; 206, central radial air outlet; 207, axial side air outlet; 300, flushing assembly; 301, water inlet pipe; 302, water supply pipe; 303, water pump; 304, water extraction pipe; 305, second solenoid valve; 400. Dust collection assembly; 401. Arc-shaped dust guide concave surface; 402. Dust guide hole; 403. Support base plate; 404. Drive motor; 405. Dust cleaning rod; 406. Arc-shaped rod; 407. Collection frame; 500. Lifting and stirring assembly; 501. Connecting sleeve; 502. Stirring rod; 503. Stirring frame; 504. Guide groove; 505. Guide rod; 506. Lifting cylinder; 507. Mounting box; 508. Driven gear; 509. Driven gear; 510. Scraper. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] In the field of energy-saving technology for environmental protection systems, the combustion chamber of the current traditional boiler, as the core equipment for coal-fired energy conversion, directly affects the energy utilization efficiency and environmental governance effect of the unit.

[0024] However, in actual coal combustion, after the coal is fed to the grate by the coal feeding system, uneven coal distribution leads to natural accumulation. The ventilation path within the coal seam is limited, and simply introducing oxygen from one direction results in a large amount of coal being in an oxygen-deficient environment for an extended period, preventing sufficient oxidation and combustion. This incomplete combustion not only prevents the full release of energy from the coal but also leaves a large amount of unburned carbon in the ash, causing unnecessary waste of valuable fuel resources and contradicting the core objective of energy conservation and emission reduction in thermal power units.

[0025] To this end, the applicant proposes a method for energy-saving and consumption-reducing retrofitting of the environmental protection system of thermal power units, aiming to solve prominent problems such as incomplete combustion in the combustion chamber of traditional boilers, serious fuel waste, and frequent equipment blockage.

[0026] An existing method for energy-saving and consumption-reducing retrofit of a thermal power unit's environmental protection system mainly focuses on end-stage optimization processes such as waste gas treatment, dust purification, and waste heat recovery. For waste gas treatment, the system effectively reduces the liquid-to-gas ratio and system operating resistance by retrofitting the desulfurization system's slurry circulation pump with frequency conversion speed regulation, combined with optimization of the absorption tower spray layer structure (such as optimizing nozzle arrangement and improving atomization effect) and replacement with a high-efficiency demister, while ensuring that the desulfurization efficiency meets the standards. For dust control, the system adopts upgraded electrostatic precipitator-baghouse hybrid dust collection technology or optimized electrostatic precipitator electrode plate and wire structure, combined with high-frequency power supply modification and ash hopper anti-clogging devices (such as adding air cannons and material level monitoring interlocking mechanisms), which significantly reduces the energy consumption of the dust collection system and the failure rate of the ash conveying system. At the same time, the system integrates a flue gas waste heat recovery device, which recovers the waste heat of the flue gas through a low-temperature economizer for heating boiler feedwater or domestic water in the plant area. With the optimization of the linkage control logic between the environmental protection system and the main system, dynamic matching of the load of each subsystem is achieved, ultimately achieving the transformation effect of reducing the energy consumption of the environmental protection system, meeting pollutant emission standards, and improving the overall operating efficiency of the unit.

[0027] Incomplete combustion of coal leads to energy waste and high pollutant generation. In traditional combustion chambers, coal is naturally piled up after being transported by the coal feeding system. The ventilation path inside the coal seam is limited, and the unidirectional oxygen supply mode cannot achieve uniform aeration throughout the entire area. This results in a large amount of coal being in an oxygen-deficient environment for a long time. This not only causes the energy of the coal to be not fully released (the unburned carbon content can reach 8%-12%), but also leaves a large amount of combustible components in the coal ash after combustion, resulting in serious fuel waste. At the same time, localized oxygen-deficient combustion is prone to producing more NO. x Pollutants such as carbon monoxide increase the load and energy consumption of end-of-pipe treatment, forming a vicious cycle of "incomplete combustion → energy waste → aggravated pollution," which has become a key bottleneck restricting the further release of the energy-saving and consumption-reducing potential of the environmental protection system of thermal power units.

[0028] Example 1: Please refer to Figure 1As shown, a method for energy-saving and consumption-reducing retrofit of an environmental protection system for a thermal power unit includes a shell 100. A combustion furnace 101 is installed inside the shell 100. An arc-shaped protrusion 102 is provided at the bottom of the combustion furnace 101. The arc-shaped protrusion 102 makes the lower end of the combustion furnace 101 an arc-shaped convex surface, which optimizes the laying pattern of coal in the combustion chamber, avoids the formation of ventilation dead corners due to local accumulation of coal, creates a uniform combustion environment for full combustion of coal, and can also use the guiding effect of the arc surface and the synergistic effect of gravity to allow the coal ash produced after combustion to slide smoothly along the smooth arc surface, effectively avoiding the accumulation of coal ash at the bottom of the combustion chamber, accelerating the ash falling process, and reducing the problem of decreased combustion efficiency caused by coal ash accumulation from a structural level.

[0029] The surface of the arc-shaped boss 102 is provided with multiple ash leakage holes 103 arranged in an evenly spaced ring array. The fully burned fine coal ash can quickly penetrate into the ash discharge channel below through the ash leakage holes 103. An observation window is provided on the side of the shell 100 so that the combustion status of the combustion furnace 101 can be observed. A feeding cover is provided at the upper end of the shell 100 so that fuel can be added into the combustion furnace 101 by opening the feeding cover.

[0030] For further details, please refer to Figure 2 As shown, a combustion-supporting air supply assembly 200 is provided on the outer side of the bottom of the combustion furnace 101. The combustion-supporting air supply assembly 200 includes a central air supply column 201 coaxially disposed at the top of the arc-shaped boss 102. The lower end of the central air supply column 201 extends to the lower end of the arc-shaped boss 102 and is connected to a conical air duct 202. The lower end of the conical air duct 202 is connected to a transfer and conveying pipe 203. A closed air supply cavity is formed between the combustion furnace 101 and the shell 100. Both ends of the transfer and conveying pipe 203 are connected to the air supply cavity. The lower end of the transfer and conveying pipeline 203 is connected to the main pipeline 204. One end of the main pipeline 204 extends through the side wall of the housing 100 to the outside, and a blower 205 is provided at the extended end. Multiple central radial air outlets 206 are arranged in a radial annular array on the circumferential side wall of the central air supply column 201. Multiple axial side air outlets 207 are arranged in an axial annular array on the lower part of the circumferential side wall of the combustion furnace 101. A first solenoid valve is provided on the outer surface of the main pipeline 204.

[0031] In this embodiment, after the first solenoid valve is opened and the blower 205 is started, a continuous airflow is generated. The airflow is transported to the transfer pipeline 203 through the main pipeline 204. The transfer pipeline 203 completes the distribution and transmission of the airflow. One stream of airflow is guided into the interior of the central air supply column 201 under the guidance of the conical air duct 202. It is then uniformly sprayed radially from multiple central radial air outlets 206, continuously supplying oxygen-containing air to the central area of ​​the coal seam inside the combustion furnace 101. Another stream of air is sent from the transfer and conveying pipe 203 into the closed air supply cavity between the combustion furnace 101 and the shell 100. After passing through the cavity, it is ejected from multiple axial side air outlets 207 at the lower part of the circumferential side wall of the combustion furnace 101 to supplement oxygen to the surrounding area of ​​the coal seam.

[0032] Through the three-dimensional coordinated layout of central radial air supply and axial air supply, the airflow fully covers the coal seam area in the combustion furnace 101, effectively solving the problem of uneven ventilation in traditional combustion chambers. This ensures that the coal seam receives sufficient and uniform oxygen supply from the center to the edge. At the same time, the airflow can also disturb the coal seam, preventing local accumulation and compaction, and further promoting the full oxidation and combustion of coal. This provides a key guarantee for energy saving and consumption reduction in the environmental protection system of thermal power units from the oxygen supply stage.

[0033] For further details, please refer to Figure 1 , Figure 3 As shown, a flushing assembly 300 is provided on the outer side of the bottom of the combustion furnace 101. The flushing assembly 300 is used to periodically flush the interior of the combustion furnace 101 and the central radial air outlet 206 and the axial side air outlet 207 to avoid blockage and the adhesion of impurities. The flushing assembly 300 includes a water inlet pipe 301 provided on one side of the transfer and conveying pipe 203. One end of the water inlet pipe 301 extends to the outer side of the housing 100 and is provided with a water delivery pipe 302. One end of the water delivery pipe 302 is connected to a water pump 303. One end of the water pump 303 is connected to a water suction pipe 304 through a flange. A second solenoid valve 305 is provided on the outer surface of the water delivery pipe 302. In this embodiment, when the combustion air supply component 200 is in operation, the flushing component 300 remains closed and shut down; when the flushing component 300 starts operation, the combustion air supply component 200 is simultaneously shut down to ensure that the airflow channel and the flushing channel work independently and avoid mutual interference that could cause safety hazards. When periodic flushing is required to prevent blockage or impurities from adhering to the central radial air outlet 206, the axial side air outlet 207, and the inside of the combustion furnace 101, the blower 205 and the first solenoid valve are turned off, the water pump 303 is started, and water is drawn through the water pipe 304. The water, pressurized by the water pump 303, is transported along the water supply pipe 302 and controlled by the second solenoid valve 305. After the water flows through the inlet pipe 301 and into the transfer and delivery pipe 203, it splits into two streams along the original airflow path of the combustion air supply assembly 200. One stream enters the central air supply column 201 through the conical air duct 202 and is sprayed out from the central radial air outlet 206 to flush the air outlet and the central area of ​​the combustion furnace 101. The other stream enters the air supply cavity between the combustion furnace 101 and the shell 100 and is sprayed out from the axial side air outlet 207 to flush the air outlet and the surrounding area of ​​the combustion furnace 101. After flushing, the wastewater carrying impurities is discharged through an arc... The ash leakage hole 103 on the shaped protrusion 102 falls into the ash discharge channel below and is discharged, thereby ensuring the smooth flow of the air outlet and the cleanliness of the inside of the combustion furnace 101, providing a guarantee for the full combustion of coal and the uniformity of ventilation. Drain pipes are provided on the outer side of the shell 100 and at the bottom of the middle of the transfer and conveying pipe 203. The drain pipes are used to discharge the liquid in the air supply cavity between the combustion furnace 101 and the shell 100 and the inside of the transfer and conveying pipe 203 in a timely manner, so as to avoid the liquid from blocking the air supply channel. When the combustion-supporting air supply component 200 is working, there is no residual water in the pipe.

[0034] Example 2: Based on Example 1, please refer to... Figure 4 , Figure 5 As shown, a dust collection assembly 400 is provided at the bottom of the combustion furnace 101. The dust collection assembly 400 includes an arc-shaped dust guiding concave surface 401 provided at the lower end of the combustion furnace 101. A dust guiding hole 402 is opened at the bottom end of the arc-shaped dust guiding concave surface 401. The lower end of the arc-shaped dust guiding concave surface 401 is fixedly provided with the same support base plate 403 by multiple support columns. Multiple fan-shaped grooves are opened on the upper surface of the support base plate 403. A drive motor 404 is provided on the upper surface of the support base plate 403. The drive motor 404 is protected by a protective shell. The output shaft of the drive motor 404 extends into the inner cavity of the arc-shaped ash-guiding concave surface 401, where a cleaning rod 405 is installed. An arc-shaped rod 406 is fixedly installed on the outer surface of the cleaning rod 405. The arc-shaped rod 406 is tightly fitted with the arc surface of the inner cavity of the arc-shaped ash-guiding concave surface 401. A collection frame 407 is slidably engaged in the bottom inner cavity of the combustion furnace 101. A slide rail is provided at the bottom of the combustion furnace 101, and the collection frame 407 can slide on the slide rail, which facilitates the periodic sliding out of the collection frame 407 to clean the coal ash and other impurities inside.

[0035] In this embodiment, the coal ash and other impurities generated during the operation of the combustion furnace 101 will naturally fall onto the arc-shaped ash guiding concave surface 401 at the bottom. The concave structure of the arc-shaped ash guiding concave surface 401 can guide the impurities to converge towards the center. The drive motor 404 drives the cleaning rod 405 and the arc-shaped rod 406 to rotate, scraping away the residual impurities attached to the concave surface and pushing all the impurities to the ash guiding hole 402 at the bottom of the arc-shaped ash guiding concave surface 401. They fall into the collection frame 407 at the bottom of the combustion furnace 101 through the fan-shaped groove. When the impurities in the collection frame 407 accumulate to a certain extent, the collection frame 407 can be slid out directly using the slide rail at the bottom of the combustion furnace 101, realizing convenient cleaning of impurities.

[0036] For further details, please refer to Figure 6 , Figure 7 As shown, a lifting and stirring assembly 500 is provided inside the housing 100. The lifting and stirring assembly 500 includes a connecting sleeve 501 rotatably disposed at the top of the housing 100. A stirring rod 502 is disposed in the middle of the connecting sleeve 501. One end of the stirring rod 502 extends into the interior of the housing 100 and is provided with a stirring frame 503. The lower end face of the stirring frame 503 is arc-shaped and is adapted to the arc-shaped boss 102. Guide grooves 504 are symmetrically provided at the connection between the connecting sleeve 501 and the stirring rod 502. Guide rods 505 are fixedly disposed in both guide grooves 504 on the outer surface of the stirring rod 502. A lifting cylinder 506 is rotatably disposed at the upper end of the stirring rod 502. An installation box 507 is provided at the upper end of the housing 100. The upper end of the lifting cylinder 506 is connected to the inner top wall of the installation box 507. A driven gear 508 is provided on the outer surface of the connecting sleeve 501. A driving gear 509 is meshed on one side of the driven gear 508. A servo motor is provided on the side wall of the mounting box 507. The output shaft of the servo motor is connected to the driving gear 509. A scraper 510 is provided on one side of the stirring frame 503. The scraper 510 is in contact with the inner side wall of the combustion furnace 101. A sleeve rod is provided at the upper end of the central air supply column 201. The stirring rod 502 extends into the inside of the sleeve rod and is slidably sleeved with the sleeve rod. The upward movement height of the lifting cylinder 506 does not exceed the maximum relative movement distance between the stirring rod 502 and the sleeve rod.

[0037] In this embodiment, a servo motor provides rotational power, driving the drive gear 509 to rotate. Through gear meshing, the driven gear 508 and the connecting sleeve 501 rotate synchronously. The rotational power of the connecting sleeve 501 is transmitted to the stirring rod 502 through the cooperation of the guide groove 504 and the guide rod 505, thereby driving the stirring frame 503 at the lower end of the stirring rod 502 to rotate, realizing the stirring operation of the material inside the shell 100. The lifting cylinder 506 can drive the stirring rod 502 to move up and down along the axial direction of the connecting sleeve 501 through the extension and retraction action. The cooperation of the guide groove 504 and the guide rod 505 can ensure that the stirring rod 502 does not deviate from the rotation axis during the lifting and lowering process. The arc-shaped lower end face of the stirring frame 503 is adapted to the arc-shaped boss 102 inside the shell 100. Under the synergistic effect of rotation and lifting, the material inside the shell 100 can be stirred in all directions without dead angles from bottom to top, effectively improving the uniformity of material mixing.

[0038] The materials of each core component of this invention must be strictly compatible with the high temperature (long-term temperature resistance up to 800-1200℃) and acid corrosion (SO2, NO produced by coal combustion) of the thermal power unit's combustion chamber. x It must withstand harsh operating conditions such as gas, particle wear, and pressure fluctuations, while also meeting requirements for mechanical strength, sealing performance, wear resistance, and fatigue resistance.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for energy saving and consumption reduction of an environmental protection system of a thermal power unit, characterized in that, The application relates to a combustion furnace, which comprises a shell (100), the inside of the shell (100) is provided with a combustion furnace (101), the bottom end of the combustion furnace (101) is provided with an arc-shaped boss (102), the bottom outer side of the combustion furnace (101) is provided with a combustion-supporting air supply assembly (200); The combustion-supporting air supply assembly (200) comprises a central air supply column (201) coaxially arranged at the top end of the arc-shaped boss (102), the lower end of the central air supply column (201) extends to the lower end of the arc-shaped boss (102) and is connected with a conical air pipe (202), the lower end of the conical air pipe (202) is connected with a transfer conveying pipe (203), and the two ends of the transfer conveying pipe (203) extend into the air supply inner cavity formed by the combustion furnace (101) and the shell (100) and are closed. The lower end of the transfer conveying pipe (203) is connected with a main pipe (204), one end of the main pipe (204) extends to the outside of the shell (100) and is provided with a blower (205). A plurality of central radial air outlets (206) are formed in the cylindrical side wall of the central air supply column (201), and a plurality of axial side air outlets (207) are formed in the circumferential side wall of the combustion furnace (101).

2. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 1, characterized in that, A plurality of ash leakage holes (103) are formed in the surface of the arc-shaped boss (102) in a ring shape.

3. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 1, characterized in that, The bottom outer side of the combustion furnace (101) is provided with a flushing assembly (300), the flushing assembly (300) comprises a water inlet pipe (301) arranged at one side of the transfer conveying pipe (203); One end of the water inlet pipe (301) extends to the outside of the shell (100) and is provided with a water supply pipe (302), one end of the water supply pipe (302) is connected with a water pump (303), one end of the water pump (303) is connected with a water suction pipe (304) through a flange.

4. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 3, characterized in that, A second electromagnetic valve (305) is arranged on the outer surface of the water supply pipe (302).

5. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 1, characterized in that, The bottom end of the combustion furnace (101) is provided with an ash removal and collection assembly (400); The ash removal and collection assembly (400) comprises an arc-shaped ash guide concave surface (401) arranged at the lower end of the combustion furnace (101), and the lower end of the arc-shaped ash guide concave surface (401) is provided with a supporting bottom plate (403); The upper surface of the supporting bottom plate (403) is provided with a driving motor (404), the output shaft of the driving motor (404) extends into the inner cavity of the arc-shaped ash guide concave surface (401) and is provided with an ash removal rod (405), the outer surface of the ash removal rod (405) is fixedly provided with an arc-shaped rod (406), and a collection frame (407) is slidably connected in the bottom inner cavity of the combustion furnace (101).

6. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 5, characterized in that, The arc-shaped rod (406) is tightly combined with the inner cavity arc surface of the arc-shaped ash guide concave surface (401).

7. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 1, characterized in that, The shell (100) is provided with a lifting and stirring assembly (500); The lifting and stirring assembly (500) comprises a connecting sleeve (501) rotationally arranged at the top end of the shell (100), a stirring rod (502) is arranged at the middle portion of the connecting sleeve (501), one end of the stirring rod (502) extends to the inside of the shell (100) and is provided with a stirring frame (503). The upper end of the stirring rod (502) is rotationally provided with a lifting cylinder (506).

8. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 7, characterized in that, Symmetrical guide grooves (504) are formed at the connection between the connecting sleeve (501) and the stirring rod (502), and the outer surface of the stirring rod (502) is fixedly provided with guide rods (505) in the two guide grooves (504); The outer surface of the connecting sleeve (501) is provided with a driven gear (508), and one side of the driven gear (508) is meshingly provided with a driving gear (509); The upper end of the shell (100) is provided with a mounting box (507), and the inner cavity of the mounting box (507) is provided with a servo motor connected with the driving gear (509).

9. The energy-saving and consumption-reducing reconstruction method for the environmental protection system of a thermal power unit according to claim 7, characterized in that, One side of the stirring frame (503) is provided with a scraper (510). The scraper (510) is closely attached to the inner side wall of the combustion furnace (101).

10. The energy-saving and consumption-reducing reconstruction method of an environmental protection system of a thermal power unit according to claim 7, characterized in that, The lower end of the stirring frame (503) is an arc-shaped end surface, which is closely attached to the upper surface of the arc-shaped boss (102).

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