High-temperature slag separating, cooling and distributing device based on blowing and temperature regulation and control method

Abstract

The invention relates to the technical field of boiler ash separation cooling and waste heat recovery, in particular to a high-temperature slag separation cooling material distribution device based on blowing and a temperature regulation and control method.The upper side of a box body is fixedly provided with a box cover, a material guide opening is formed in the box cover, and an outer pipe is fixedly installed in the material guide opening; an air inlet and an air outlet are respectively formed in two opposite sides of the box body, and air pipes are fixedly mounted in the air inlet and the air outlet; boiler ash is conveyed into the box body through the discharging pipe by the guide hopper, then the high-temperature boiler ash is blown by gas to separate and cool the ash with different particle sizes, then the ash falls onto the sieve plate to be distributed, preliminary cooling and waste heat recovery are achieved in the blowing and screening process of the ash, and the ash is recycled. Further cooling and waste heat recovery are achieved through a non-uniform pipe spacing heat exchanger, the slag discharging speed is controlled in cooperation with a slag discharging unit, then the cooling time of the slag is controlled, and the uniformity of the slag discharging temperature is adjusted and controlled through the combination of the cooling modes.

Description

Technical Field

[0001] The invention relates to the technical field of boiler ash separation cooling and waste heat recovery, and in particular to a high-temperature slag separation cooling distribution device based on blowing and a temperature control method. Background Art

[0002] As an important thermal equipment, boilers are widely used in industrial, commercial and civil fields. High-temperature boiler ash is the final product formed by a series of physical and chemical changes in the combustion of minerals in coal in the boiler. Since ash in the boiler will cause problems such as furnace contamination, slagging, corrosion and wear of the heating surface, which will affect the normal operation of the boiler, it is necessary to remove the high-temperature boiler ash in a timely and effective manner. High-temperature boiler ash (700~900℃) contains a large amount of waste heat during the removal process. If the waste heat of high-temperature boiler ash can be efficiently recovered and utilized, it can reduce the energy consumption of boiler operation and improve energy utilization efficiency, which will play an important role in promoting my country's dual carbon goals.

[0003] At present, most high-temperature boiler ash is cooled by cold water slag flushing and slag coolers. Cold water slag flushing is to directly immerse the high-temperature boiler ash in water for cooling, which not only pollutes and wastes water resources, but also wastes the waste heat of the high-temperature boiler ash. The slag cooler uses cooling water in the cylinder of the slag cooler to indirectly cool the high-temperature boiler ash, realizing the waste heat recovery of the high-temperature boiler ash, but the recovered waste heat can only produce hot water, which does not meet the principle of high quality and high use. At the same time, the slag cooler is a mechanical transmission equipment, which is easily worn and broken by the friction of the high-temperature boiler ash. During hot operation, the heated parts are easily stuck due to expansion and deformation. The equipment failure rate is high and the output of a single device is small.

[0004] With the development of large-scale boilers, the discharge volume of high-temperature boiler ash has gradually increased, and the heat exchanger for waste heat utilization of high-temperature boiler ash has also gradually become larger. In actual engineering applications, due to the large processing capacity of the heat exchanger, the high-temperature boiler ash cannot evenly fill the entire heat exchanger, resulting in low heat exchange cross-sectional area utilization, insufficient heat exchange and other problems. Therefore, under the conditions of meeting the cooling and waste heat recovery of large-displacement high-temperature boiler ash, a method for separating and cooling boiler ash and controlling slag discharge temperature is sought, which helps to solve the problems of uneven distribution of large-displacement boiler ash in large heat exchangers and large slag discharge temperature differences. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art, and to address the problems of uneven distribution of large-displacement high-temperature boiler ash in a large heat exchanger and large temperature difference in slag discharge, a high-temperature slag separation cooling distribution device and a temperature control method based on blowing are provided, which can achieve the purpose of uniform distribution of large-displacement high-temperature boiler ash in a large heat exchanger and uniform slag discharge temperature, and help to improve the cooling and waste heat recovery efficiency of high-temperature boiler ash.

[0006] The technical solution of the present invention is: a high-temperature slag separation cooling distribution device based on blowing, comprising a box body, a box cover is fixedly installed on the upper side of the box body, a material guide port is opened on the box cover, an outer pipe is fixedly installed in the material guide port, an air inlet and an exhaust port are respectively opened on opposite sides of the box body, an air pipe is fixedly installed in the air inlet and the exhaust port, a plurality of slide grooves are opened on the inner wall of the box body, an equalizing component is slidably installed in the slide groove, a non-uniform tube spacing heat exchanger is fixedly installed on the inner wall of the box body, the non-uniform tube spacing heat exchanger is located on the lower side of the equalizing component, and an ash treatment component is fixedly installed on the inner wall of the non-uniform tube spacing heat exchanger; The equal distribution component includes multiple sliders, and the multiple sliders are correspondingly slidably installed in the slide groove. The same sieve plate is fixedly installed on one side of the multiple sliders, and baffles are fixedly installed on both sides of the top of the sieve plate. The surface of the sieve plate is provided with multiple levels of sieve holes, and multiple dividing strips are fixedly installed on the upper side of the sieve plate. Vibration springs are fixedly installed on the upper and lower sides of the multiple sliders, a transmission hole is opened on the box cover, and a transmission rod is rotatably installed in the transmission hole, and a vibration unit is sleeved on the surface of the transmission rod, and a servo motor is fixedly installed on the upper side of the box cover, and a power component is fixedly installed on the output end of the servo motor, and the power component is fixedly installed on the surface of the transmission rod.

[0007] Furthermore, the vibration unit includes a pipe sleeve, which is installed on the surface of the transmission rod. The surface of the screen plate is provided with a mounting hole, and the pipe sleeve is fixedly installed in the mounting hole. The surface of the transmission rod is provided with a reciprocating groove. Two limit blocks are fixedly installed on the inner wall of the pipe sleeve, and the two limit blocks are both slidably installed in the reciprocating groove.

[0008] Furthermore, the power assembly includes a primary bevel gear, which is fixedly mounted on the output end of the servo motor; a driving rod is rotatably mounted on the upper side of the box cover; a secondary bevel gear is fixedly mounted on the top of the driving rod, and the secondary bevel gear is meshed with the primary bevel gear; a driving gear is fixedly mounted on the surface of the driving rod; a transmission gear is fixedly mounted on the surface of the transmission rod, and the driving gear is meshed with the transmission gear.

[0009] Furthermore, a plurality of connecting springs are fixedly installed on the inner wall of the outer tube, a same feeding tube is fixedly installed on the other ends of the connecting springs, a guide hopper is fixedly installed on the upper side of the feeding tube, a limiting opening is opened on one side of the outer tube, a knocking block is slidably installed in the limiting opening, a reciprocating rod is fixedly installed on one side of the knocking block, a reciprocating block is fixedly installed on one end of the reciprocating rod, a reciprocating opening is opened on the reciprocating block, a driving block is fixedly installed on the upper side of the transmission gear, and the driving block is slidably installed in the reciprocating opening.

[0010] Furthermore, the ash processing component includes a slag discharge unit, a heat exchange tube is fixedly installed in the non-uniform tube spacing heat exchanger, a water inlet is opened on the lower side of the heat exchange tube, a water inlet pipe is fixedly installed in the water inlet, the water inlet pipe is connected to the conveying pipe, a first-level avoidance port is opened on the lower side of the non-uniform tube spacing heat exchanger, a water outlet is opened on the upper side of the heat exchange tube, a second-level avoidance port is opened on the upper side of the non-uniform tube spacing heat exchanger, a liquid supply unit is fixedly installed on one side of the box body, a plurality of partition frames are fixedly installed on the upper side of the non-uniform tube spacing heat exchanger, an installation groove is opened at the lower part of the non-uniform tube spacing heat exchanger, a flipping unit is fixedly installed in the installation groove, a through-opening is opened on the inner wall of the installation groove, and a slag discharge unit is rotatably installed in the through-opening.

[0011] Furthermore, the flipping unit includes a mounting bar, which is fixedly installed in the mounting groove, and a plurality of rotating holes are opened on the upper side of the mounting bar, in which a toggle rod is rotatably installed, and a through hole is opened on the inner wall of the mounting groove, in which a power rod is rotatably installed, a four-stage bevel gear is fixedly installed on the surface of the power rod, a three-stage bevel gear is fixedly installed on the bottom end of the toggle rod, and the three-stage bevel gear is meshed with the four-stage bevel gear, and a plurality of heat insulation boxes are fixedly installed on the lower side of the mounting bar, a through hole is opened on one side of the heat insulation box, and the power rod is rotatably installed in the through hole.

[0012] Furthermore, the slag discharging unit includes a discharging auger, which is rotatably installed in the through-hole, a discharging port is provided on the lower side of the non-uniform tube spacing heat exchanger, and an avoidance groove is provided on one side of the non-uniform tube spacing heat exchanger. A secondary gear is fixedly installed at one end of the discharging auger, a primary gear is fixedly installed at one end of the power rod, and the primary gear is meshed with the secondary gear. A driving motor is fixedly installed on one side of the box body, a motor hole is provided on one side of the box body, the output shaft of the driving motor is coaxially fixedly connected to one end of the discharging auger, a thermocouple is installed at the discharging port of the discharging end of the discharging auger, and a controller is fixedly installed on one side of the box body, the thermocouple is electrically connected to the controller, and the controller is electrically connected to the driving motor.

[0013] Furthermore, the liquid supply unit includes a water injection box, which is fixedly installed on one side of the box body, a water injection port is opened on one side of the water injection box, a water injection pipe is fixedly installed in the water injection port, a delivery port is opened on the lower side of the water injection box, the delivery pipe is fixedly installed in the delivery port, a primary one-way valve is installed on the water injection pipe, a secondary one-way valve is installed on the delivery pipe, and a piston is slidably installed on the inner wall of the water injection box, and is combined with the piston to form a reciprocating pump.

[0014] Furthermore, the liquid supply unit also includes a U-shaped rod, one end of the U-shaped rod is fixedly connected to one side of the piston, a connecting hole is opened on one side of the box body, a rotating rod is rotatably installed in the connecting hole, a half gear is fixedly installed on one end of the rotating rod, and the other end of the rotating rod is coaxially fixedly connected to the power rod, a limit strip is fixedly installed on one side of the box body, a driving frame is slidably installed on the inner wall of the limit strip, the inner wall of the driving frame is provided with teeth, a connecting plate is fixedly installed on one side of the driving frame, and one side of the connecting plate is fixedly connected to the other end of the U-shaped rod.

[0015] A temperature control method of the above-mentioned high-temperature slag separation cooling distribution device based on blowing comprises the following steps: S1. First, the boiler ash is introduced from the guide hopper and enters the box through the discharge pipe. The ash is evenly distributed through the equalizing component in the box. The sieve plate evenly divides the boiler ash of different particle sizes into the corresponding partition frame for classification, and then enters the non-uniform tube spacing heat exchanger to cool the particles of different particle sizes; S2, then the output end of the servo motor drives the power assembly to move, knock the feeding pipe to prevent blockage, and vibrate the screen plate to increase the feeding efficiency. During the working process, the temperature of the boiler ash in different particle size areas is monitored by thermocouples, and the data is transmitted to the controller; S3. The output end of the driving motor drives the toggle rod and the discharging auger to rotate. The toggle rod adjusts the uniformity of the slag discharge temperature of the slag of the same particle size during the stirring of the slag. At the same time, the discharging auger transports the boiler slag to the discharge port on the lower side of the heat exchanger with non-uniform tube spacing for discharge. For the slag with a temperature higher than the set temperature range, the controller controls the corresponding driving motor to reduce the speed to reduce the discharging speed. For the slag with a temperature lower than the set temperature range, the controller controls the driving motor to increase the speed to speed up the discharging speed, so that the temperature of the discharged boiler slag of different particle sizes is uniform.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, boiler ash is transported from a guide hopper to the inside of a box through a discharge pipe, and then the high-temperature boiler ash is blown by gas to separate and cool ash of different particle sizes. The ash after blowing enters the sieve plate and its particle size decreases from left to right in sequence, and the output end of the servo motor drives the primary bevel gear to rotate, the primary bevel gear drives the secondary bevel gear to rotate, the secondary bevel gear drives the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives the transmission gear to rotate, the transmission gear drives the transmission rod to rotate, the transmission rod drives two limit blocks to reciprocate up and down through the reciprocating groove on the surface, the two limit blocks drive the pipe sleeve to move up and down, the pipe sleeve drives the sieve plate to reciprocate up and down under the cooperation of the slider and the vibration spring, so that the boiler ash on the surface of the sieve plate cooperates with the baffle to be evenly distributed, the boiler ash after uniform distribution falls into different partitions through sieve holes of different sizes on the surface of the sieve plate, the boiler ash of different particle sizes is classified, and the slag of different particle sizes is cooled by the non-uniform tube spacing heat exchanger on the lower side of each partition frame, so as to achieve the effect of improving the heat exchange efficiency.

[0017] 2. The present invention drives the driving block to move through the transmission gear, the driving block drives the reciprocating block to reciprocate, the reciprocating block drives the reciprocating rod to reciprocate, the reciprocating rod drives the knocking block to continuously knock the feeding pipe, and the feeding pipe is vibrated through multiple connecting springs connected between the feeding pipe and the outer pipe to prevent the feeding pipe from being blocked.

[0018] 3. The present invention uses multiple sets of thermocouples to monitor the temperature of boiler ash of different particle sizes, and transmits the data to a controller. The controller reduces the speed of a driving motor in a boiler ash area with a higher temperature, thereby increasing the cooling time of the boiler ash with a higher temperature, and making the temperature of the discharged boiler ash of different particle sizes uniform.

[0019] 4. In the present invention, gas blowing ash separation cooling, non-uniform tube spacing heat exchanger cooling, toggle rod stirring and discharge auger speed regulation are coordinated with each other to achieve overall control of slag discharge temperature uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention; Figure 2 It is a schematic diagram of the internal structure of the box body in the present invention; Figure 3 It is a structural schematic diagram of the equally divided components in the present invention; Figure 4 yes Figure 3 A schematic diagram of the structure enlargement of the A region in the middle; Figure 5 Schematic diagram of the structure of the heat exchanger with non-uniform tube spacing in the present invention; Figure 6 is a schematic diagram of the cross-sectional structure of the heat exchanger with non-uniform tube spacing in the present invention; Figure 7 yes Figure 6 A schematic diagram of the structure enlargement of the middle B area; Figure 8 It is a structural schematic diagram of the liquid supply unit in the present invention; Fig. 9 yes Figure 8 A schematic diagram of the structure enlargement of the middle C region; Fig.10 It is a schematic diagram of the cross-section structure of the pipe sleeve in the present invention; Fig.11 is a schematic diagram of the structure of the transmission component; Fig.12 It is a front cross-sectional schematic diagram of the equalizing component in Example 3 of the present invention; Fig.13 It is a schematic front view and cross-sectional view of the material distribution auger in Example 3 of the present invention.

[0021] Description of reference numerals: 1. Box body; 2. Box cover; 3. Servo motor; 4. Outer tube; 5. Air pipe; 6. Slider; 7. Vibration spring; 8. Baffle; 9. Heat exchanger with non-uniform tube spacing; 10. Bulkhead; 11. Guide hopper; 12. Connecting spring; 13. Feeding pipe; 14. Sieve plate; 15. Separation strip; 16. Transmission rod; 17. Reciprocating port; 18. Primary bevel gear; 19. Secondary bevel gear; 20. Reciprocating rod; 21. Knocking block; 22. Reciprocating block; 23. Transmission hole; 24. Transmission gear; 25. Drive block; 26. Drive gear; 27. Drive rod; 28. Water filling tank; 29. ​​Rack; 30. Heat exchange tube; 31. Rotating rod; 32. primary gear; 33. toggle lever; 34. mounting strip; 35. driving motor; 36. secondary gear; 37. discharging auger; 38. third-stage bevel gear; 39. power rod; 40. fourth-stage bevel gear; 41. heat-insulating box; 42. water inlet pipe; 43. water injection pipe; 44. delivery pipe; 45. piston; 46. U-shaped rod; 47. connecting plate; 48. driving frame; 49. limiting strip; 50. half gear; 51. pipe sleeve; 52. limiting block; 53. reciprocating groove; 54. controller; 55. material distribution auger; 56. material guide plate; 57. distribution hole; 58. cooling chamber; 59. connecting hole; 60. shell. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0023] Figure 1 to Figure 11 The best embodiment of the present invention is shown below in conjunction with the attached Figure 1 to Figure 13 The present invention is further described.

[0024] Example 1 like Figure 1 to Figure 11 As shown, a high-temperature slag separation cooling distribution device based on blowing comprises a box body 1, a box cover 2 is fixedly installed on the upper side of the box body 1, a material guide port is opened on the box cover 2, an outer tube 4 is fixedly installed in the material guide port, an air inlet is arranged on the side of the box body 1 close to the material guide port, an exhaust port is arranged on the side away from the material guide port, air pipes 5 are fixedly installed in both the air inlet and the exhaust port, a plurality of slide grooves are opened on the inner wall of the box body 1, an equalizing component is slidably installed in the slide groove, a non-uniform tube spacing heat exchanger 9 is fixedly installed on the inner wall of the box body 1, the non-uniform tube spacing heat exchanger 9 is located on the lower side of the equalizing component, and an ash treatment component is fixedly installed on the inner wall of the non-uniform tube spacing heat exchanger 9.

[0025] The equal distribution component includes multiple sliders 6, and the multiple sliders 6 are correspondingly slidably installed in the slide groove. The same sieve plate 14 is fixedly installed on one side of the multiple sliders 6, and baffles 8 are fixedly installed on both sides of the top of the sieve plate 14. The surface of the sieve plate 14 is provided with multiple sieve holes, and multiple dividing strips 15 are fixedly installed on the upper side of the sieve plate 14. Vibration springs 7 are fixedly installed on the upper and lower sides of the multiple sliders 6, and the other end of the vibration spring 7 is fixedly connected to the inner wall of the box body 1. A transmission hole 23 is opened on the box cover 2, and a transmission rod 16 is rotatably installed in the transmission hole 23. A vibration unit is sleeved on the lower surface of the transmission rod 16. A servo motor 3 is fixedly installed on the upper side of the box cover 2, and a power component is fixedly installed on the output end of the servo motor 3, and the power component is fixedly installed on the upper surface of the transmission rod 16.

[0026] By means of the above-mentioned structure, the structure installed in the box body 1 in the device is made of high-temperature resistant metal materials. After being heated in the box body 1, no deformation etc. will occur. By arranging a variable frequency high-pressure fan at the air inlet, the ash is air-selected, and a star-shaped unloading valve is arranged at the material guide port to control the discharge amount, which can not only ensure a good air-selection effect during air selection, but also avoid the problem of the screen plate 14 being unable to vibrate due to excessive ash, so as to ensure the continuous and stable operation of the equipment. The height of the air pipe 5 is located on the upper side of the sieve plate 14, and the sieve plate 14 is inclined in the direction of ash conveying to evenly distribute the non-uniform tube spacing heat exchanger 9. The air pipe 5 connected to the air outlet can be connected to an external boiler. The gas blowing not only realizes air selection, but also realizes the preliminary cooling of the boiler ash to a certain extent. The hot gas after the gas absorbs heat is supplied to the boiler to improve the combustion efficiency in the boiler. Two sliders 6 are installed on both sides of the sieve plate 14, and a vibration spring 7 is installed on the upper and lower sides of each slider 6. Four groups of sieve holes are opened on the surface of the sieve plate 14, and the sieve holes decrease from left to right. The boiler ash of different particle sizes after gas blowing, cooling and separation can be distributed. The non-uniform tube spacing heat exchanger 9 is located on the lower side of the sieve plate 14, and a dividing strip 15 is installed at the junction of different sieve holes to divide the surface of the sieve plate 14 into even areas to improve its distribution quality.

[0027] Attached Figure 2 It only shows the relative position relationship between the screen plate 14 and the air selection direction of the box body 1, but not the actual size of the two. The actual width of the screen plate 14 is 3-5 times the width of the slag-receiving part of the screen plate 14 along the inclined direction. The width of the slag-receiving part is the blanking width.

[0028] Furthermore, the vibration unit includes a pipe sleeve 51, which is sleeved and installed on the surface of the transmission rod 16. A mounting hole is opened on the surface of the screen plate 14, and the pipe sleeve 51 is fixedly installed in the mounting hole. A reciprocating groove 53 is opened on the surface of the transmission rod 16. Two limit blocks 52 are fixedly installed on the inner wall of the pipe sleeve 51, and the two limit blocks 52 are both slidably installed in the reciprocating groove 53.

[0029] With the above structure, the two limit blocks 52 are spherical and slidably installed in the reciprocating groove 53. When the reciprocating groove 53 rotates, the two limit blocks 52 can drive the pipe sleeve 51 to move up and down, so that the screen plate 14 vibrates up and down, preventing the screen holes from being blocked and increasing the feeding rate.

[0030] Furthermore, the power assembly includes a primary bevel gear 18, which is fixedly mounted on the output end of the servo motor 3. A driving rod 27 is rotatably mounted on the upper side of the box cover 2, and a secondary bevel gear 19 is fixedly mounted on the top of the driving rod 27. The secondary bevel gear 19 is meshed with the primary bevel gear 18. A driving gear 26 is fixedly mounted on the surface of the driving rod 27. A transmission gear 24 is fixedly mounted on the surface of the transmission rod 16, and the driving gear 26 is meshed with the transmission gear 24.

[0031] With the above structure, the servo motor 3 can provide power to the driving rod 27 to make the screen plate 14 vibrate.

[0032] Furthermore, a plurality of connecting springs 12 are fixedly installed on the inner wall of the outer tube 4, a same feeding tube 13 is fixedly installed on the other end of the plurality of connecting springs 12, a guide hopper 11 is fixedly installed on the upper side of the feeding tube 13, a limiting opening is opened on one side of the outer tube 4, a knocking block 21 is slidably installed in the limiting opening, a reciprocating rod 20 is fixedly installed on one side of the knocking block 21, a reciprocating block 22 is fixedly installed on one end of the reciprocating rod 20, a reciprocating opening 17 is opened on the reciprocating block 22, a driving block 25 is fixedly installed on the upper side of the transmission gear 24, and the driving block 25 is slidably installed in the reciprocating opening 17.

[0033] Furthermore, the feed pipe 13 needs to be in contact with high-temperature ash, and usually a layer of high-temperature resistant castable material is added to its inner wall.

[0034] With the above structure, four connecting springs 12 with equal spacing are installed between the outer tube 4 and the feeding tube 13. When the knocking block 21 knocks the feeding tube 13, the feeding tube 13 can be vibrated.

[0035] Furthermore, the ash treatment component includes a slag discharge unit, the heat exchange tube 30 is fixedly installed in the non-uniform tube spacing heat exchanger 9, a water inlet is opened on the lower side of the heat exchange tube 30, a water inlet pipe 42 is fixedly installed in the water inlet, the water inlet pipe 42 is connected to the conveying pipe 44, a first-level avoidance port is opened on the lower side of the non-uniform tube spacing heat exchanger 9 to facilitate the extension of the water inlet pipe 42, a drain port is opened on the upper side of the heat exchange tube 30, a second-level avoidance port is opened on the upper side of the non-uniform tube spacing heat exchanger 9, a liquid supply unit is fixedly installed on one side of the box body 1, a plurality of partition frames 10 are fixedly installed on the upper side of the non-uniform tube spacing heat exchanger 9, an installation groove is opened at the lower part of the non-uniform tube spacing heat exchanger 9, a flipping unit is fixedly installed in the installation groove, a through-opening is opened on the inner wall of the installation groove, and a slag discharge unit is rotatably installed in the through-opening.

[0036] With the help of the above structure, four groups of partition frames 10 are installed on the upper side of the non-uniform tube spacing heat exchanger 9. The guide port of each partition frame 10 is funnel-shaped, which reduces the amount of boiler ash discharged, thereby reducing the bearing pressure of the flipping unit, so that the flipping unit can operate normally. Heat exchange tubes 30 are installed on the lower side of each partition frame 10, and correspond to the ash distribution areas of different particle sizes on the surface of the sieve plate 14. The number of heat exchange tubes 30 increases from the left side to the right side of the non-uniform tube spacing heat exchanger 9, that is, the area with large particles of boiler ash has the least number of heat exchange tubes 30, and vice versa. The heat exchange tubes 30 are connected, and water can be injected for heat exchange when in use.

[0037] Furthermore, the non-uniform tube spacing heat exchanger 9 refers to a heat exchange tube 30 having a non-uniform spacing therebetween. In this embodiment, the density of the heat exchange tube 30 increases gradually from left to right.

[0038] Furthermore, the flipping unit includes a mounting bar 34, which is fixedly installed in the mounting groove. A plurality of rotating holes are opened on the upper side of the mounting bar 34, in which a toggle rod 33 is rotatably installed. A through hole is opened on the inner wall of the mounting groove, in which a power rod 39 is rotatably installed. A four-stage bevel gear 40 is fixedly installed on the surface of the power rod 39, a three-stage bevel gear 38 is fixedly installed on the bottom end of the toggle rod 33, and the three-stage bevel gear 38 is meshed with the four-stage bevel gear 40. A plurality of heat insulation boxes 41 are fixedly installed on the lower side of the mounting bar 34, a through hole is opened on one side of the heat insulation box 41, and the power rod 39 is rotatably installed in the through hole.

[0039] Through the above structure, three toggle rods 33 are installed on each mounting bar 34, which can stir the boiler ash to prevent it from being blocked on the upper side of the mounting groove and affecting the slag discharge. At the same time, the ash stirring process can regulate the uniformity of the slag discharge temperature of the same particle size. The insulation box 41 is convenient for protecting the third-stage bevel gear 38 and the fourth-stage bevel gear 40.

[0040] Furthermore, the slag discharging unit includes a discharging auger 37, which is rotatably installed in the through-hole, a discharging port is provided on the lower side of the non-uniform tube spacing heat exchanger 9, and a avoidance groove is provided on one side of the non-uniform tube spacing heat exchanger 9. A secondary gear 36 is fixedly installed on one end of the discharging auger 37, a primary gear 32 is fixedly installed on one end of the power rod 39, and the primary gear 32 is meshed with the secondary gear 36. A driving motor 35 is fixedly installed on one side of the box body 1, a motor hole is provided on one side of the box body 1, and the output shaft of the driving motor 35 is coaxially fixedly connected to one end of the discharging auger 37. A thermocouple is installed at the discharging port of the discharging end of the discharging auger 37, and a controller 54 is fixedly installed on one side of the box body 1, the thermocouple is electrically connected to the controller 54, and the controller 54 is electrically connected to the driving motor 35.

[0041] By means of the above structure, the four heat exchange areas of the non-uniform tube spacing heat exchanger 9 are equipped with independent slag discharge units. The cross-section of the area where the discharging auger 37 is installed near the lower side of the installation groove is circular, so that the discharging auger 37 can discharge slag. Thermocouples are prior art, which are sensors for temperature measurement. No further elaboration is given here. Thermocouples can be used to monitor the temperature of boiler ash in areas with different particle sizes, and their real-time data can be transmitted to the controller 54. The controller 54 controls the rotation speed of multiple drive motors 35. The rotation speed of the drive motor 35 in the area corresponding to the slag with a temperature higher than the set temperature is reduced, and the rotation speed of the drive motor 35 in the area corresponding to the slag with a temperature lower than the set temperature is increased. At the same time, the toggle rod 33 stirs and adjusts the temperature of the boiler ash in the same particle size area, so that the temperature of the discharged boiler ash with different particle sizes is finally uniform. The box body 1 is wrapped with heat insulation material to isolate heat, thereby preventing the drive motor 35 from overheating and damage.

[0042] Furthermore, the liquid supply unit includes a water injection box 28, which is fixedly installed on one side of the box body 1. A water injection port is opened on one side of the water injection box 28, and a water injection pipe 43 is fixedly installed in the water injection port. A delivery port is opened on the lower side of the water injection box 28, and a delivery pipe 44 is fixedly installed in the delivery port. A primary one-way valve is installed on the water injection pipe 43, and a secondary one-way valve is installed on the delivery pipe 44. A piston 45 is slidably installed on the inner wall of the water injection box 28, and the water injection box 28 and the piston 45 are combined into a reciprocating pump.

[0043] With the above structure, the direction of the first-stage one-way valve is from the water injection pipe 43 to the water injection tank 28 , and the direction of the second-stage one-way valve is from the water injection tank 28 to the delivery pipe 44 .

[0044] Further, the liquid supply unit also includes a U-shaped rod 46, one end of which is fixedly connected to one side of the piston 45, a connecting hole is provided on one side of the housing 1, a rotating rod 31 is rotatably installed in the connecting hole, a half gear 50 is fixedly installed on one end of the rotating rod 31, and the other end of the rotating rod 31 is rotatably connected to the power rod 39, a limit bar 49 is fixedly installed on one side of the housing 1, a driving frame 48 is slidably installed on the inner wall of the limit bar 49, and teeth are provided on the inner wall of the driving frame 48, a connecting plate 47 is fixedly installed on one side of the driving frame 48, and one side of the connecting plate 47 is fixedly connected to the other end of the U-shaped rod 46. The teeth on the half gear 50 are alternately meshed with the teeth on the upper and lower sides of the driving frame 48, thereby realizing the reciprocating motion of the driving frame 48.

[0045] Furthermore, the other end of the rotating rod 31 is rotatably sleeved outside the power rod 39, and one end of the rotating rod 31 close to the half gear 50 is rotatably connected to the housing 1. A transmission assembly is provided between the sieve plate 14 and the rotating rod 31, and the transmission assembly is located between the housing 1 and the non-uniform tube spacing heat exchanger 9.

[0046] The transmission assembly includes a passive gear rotatably sleeved on the rotating rod 31, a ratchet mechanism and a rack 29, two passive gears are arranged side by side along the axial direction of the rotating rod 31, and the racks 29 are symmetrically arranged on both sides of the rotating rod 31, and the two racks 29 are fixedly connected to the screen plate 14 and rise and fall synchronously with it, and the two racks 29 are respectively meshed with the two passive gears, and a ratchet mechanism is arranged between each passive gear and the rotating rod 31, and the ratchet mechanism realizes one-way transmission between the passive gear and the rotating rod 31, and the transmission directions of the ratchet mechanisms between the two passive gears and the rotating rod 31 are opposite. The ratchet mechanism is an existing structure, and its specific structure and working principle are not repeated here.

[0047] When the screen plate 14 moves upward, the two racks 29 move upward synchronously, and the two passive gears rotate synchronously, one of which serves as the power end and drives the rotating rod 31 to rotate through the ratchet mechanism, and the other passive gear rotates relative to the rotating rod 31; when the screen plate 14 moves downward, the two racks 29 move downward synchronously, and the two passive gears rotate synchronously in the opposite direction, and the other passive gear serves as the power end and drives the rotating rod 31 to rotate through the ratchet mechanism. The screen plate 14 reciprocates up and down, thereby realizing that the rotating rod 31 continuously rotates in one direction.

[0048] In this embodiment, the sieve plate 14 is cooled by water cooling, and the water cooling is achieved by providing a cooling channel or a water cooling interlayer on the sieve plate 14 .

[0049] Working principle: When the device is in use, the gas pipe 5 of the gas outlet of the box 1 is connected to the gas collection device, the water injection pipe 43 is connected to the water source, and the steam drum is connected to the water outlet to achieve steam-water separation and utilize the waste heat. The boiler ash is transported from the guide hopper 11 to the sieve plate 14 through the discharge pipe 13. In this process, the slag is blown by the gas, which can not only preliminarily cool the slag, but also distribute the slag in a way that the particle size gradually decreases from left to right. The servo motor 3 is started, and the output end of the servo motor 3 drives the primary bevel gear 18 to rotate, and the primary bevel gear 18 drives the primary bevel gear 18 to rotate. The secondary bevel gear 19 rotates, the secondary bevel gear 19 drives the driving rod 27 to rotate, the driving rod 27 drives the driving gear 26 to rotate, the driving gear 26 drives the transmission gear 24 to rotate, the transmission gear 24 drives the driving block 25 to move, the driving block 25 drives the reciprocating block 22 to reciprocate, the reciprocating block 22 drives the reciprocating rod 20 to reciprocate, the reciprocating rod 20 drives the knocking block 21 to continuously knock the feeding tube 13, and the feeding tube 13 is vibrated through the multiple connecting springs 12 connected between the feeding tube 13 and the outer tube 4 to prevent the feeding tube 13 from being blocked and affecting the air blowing feeding. The guide port can also be connected to an external fan to achieve air blowing auxiliary feeding.

[0050] While the knocking block 21 is knocking, the transmission gear 24 also drives the transmission rod 16 to rotate. The transmission rod 16 drives the two limit blocks 52 to reciprocate up and down through the reciprocating groove 53 on the surface. The two limit blocks 52 drive the pipe sleeve 51 to move up and down. The pipe sleeve 51 drives the sieve plate 14 to reciprocate up and down under the cooperation of the slider 6 and the vibration spring 7, so that the boiler ash on the surface of the sieve plate 14 is evenly distributed with the baffle 8. The sieve plate 14 evenly separates boiler ash of different particle sizes from left to right. Boiler ash of different particle sizes is evenly distributed through the sieve holes on the surface of the sieve plate 14 and falls into different partition frames 10 in the non-uniform tube spacing heat exchanger 9. The boiler ash is heat exchanged and cooled with the heat exchange tube 30 in the non-uniform tube spacing heat exchanger 9.

[0051] A plurality of groups of thermocouples monitor the temperature of boiler ash of different particle sizes and transmit the data to the controller 54. The controller 54 controls the operation of the driving motor 35. The output end of the driving motor 35 drives the discharging auger 37 to rotate. When the discharging auger 37 rotates, it drives the secondary gear 36 to rotate. The secondary gear 36 drives the primary gear 32 to rotate. The primary gear 32 drives the power rod 39 to rotate. The power rod 39 drives multiple four-stage bevel gears 40 to rotate. The four-stage bevel gear 40 drives the three-stage bevel gear 38 to rotate. The three-stage bevel gear 38 drives the toggle rod 33 to rotate, so as to stir the boiler ash to prevent it from being blocked in the installation groove of the non-uniform tube spacing heat exchanger 9, resulting in the inability to transport. At the same time, the ash stirring process can further regulate the uniformity of the slag discharge temperature.

[0052] When cooling and conveying boiler ash, water is injected into the water injection pipe 43 through an external water supply device, and cold water enters the water injection box 28. At this time, the power rod 39 drives the rotating rod 31 to rotate, and the rotating rod 31 drives the half gear 50 to rotate. The driving frame 48 reciprocates through the teeth on its inner wall under the drive of the half gear 50, and the driving frame 48 drives the connecting plate 47 to reciprocate, and the connecting plate 47 drives the U-shaped rod 46 to reciprocate, and the U-shaped rod 46 drives the piston 45 to reciprocate. When the piston 45 is pulled out of the water injection box 28, negative pressure is generated in the water injection box 28, and cold water is sucked in through the water injection pipe 43. When the piston 45 is pushed into the water injection box 28, it is transported to the heat exchange tube 30 through the delivery pipe 44.

[0053] The present invention also provides a temperature control method for the above-mentioned high-temperature slag separation cooling distribution device based on blowing, comprising the following steps: S1. First, the boiler ash is introduced from the guide hopper 11 and enters the box 1 through the discharge pipe 13. The ash is evenly distributed through the equalizing component in the box 1. The sieve plate 14 evenly distributes the boiler ash of different particle sizes into the corresponding partition frame 10 for classification, and then enters the non-uniform tube spacing heat exchanger 9 to cool the particles of different particle sizes; S2, then the output end of the servo motor 3 drives the power assembly to move, knock the feeding pipe 13 to prevent blockage, and vibrate the screen plate 14 to increase the feeding efficiency. During the working process, the temperature of the boiler ash in different particle size areas is monitored by thermocouples, and the data is transmitted to the controller 54; S3, the output end of the driving motor 35 drives the toggle rod 33 and the discharging auger 37 to rotate. In the process of stirring the ash, the toggle rod 33 adjusts the uniformity of the slag discharge temperature of the ash with the same particle size. At the same time, the discharging auger 37 transports the boiler ash to the discharge port on the lower side of the non-uniform tube spacing heat exchanger 9 for discharge. For the slag with a temperature higher than the set temperature range, the controller 54 controls the corresponding driving motor 35 to reduce the speed to reduce the discharging speed. For the slag with a temperature lower than the set temperature range, the controller 54 controls the driving motor 35 to increase the speed to speed up the discharging speed, so that the temperature of the discharged boiler ash with different particle sizes is uniform.

[0054] Example 2 The difference between Example 2 and Example 1 is that the heat exchange tube 30 includes a primary heat exchange tube arranged on the upper side of the non-uniform tube spacing heat exchanger 9 and a secondary heat exchange tube arranged in the non-uniform tube spacing heat exchanger 9, and the arrangement of the primary heat exchange tube and the secondary heat exchange tube is the same as the arrangement of the heat exchange tube 30 in Example 1. The primary heat exchange tube and the secondary heat exchange tube are independently arranged, the primary heat exchange tube recovers heat to generate steam, and the secondary heat exchange tube recovers heat to generate hot water, so as to achieve high quality and high use of heat and cascade recovery.

[0055] Example 3 like Figure 12-13 As shown, the difference between Example 3 and Example 1 is that in this embodiment, no air inlet and air outlet are provided on the box body 1. A material distribution assembly is provided in the box body 1, and the material distribution assembly is provided on the upper side of the sieve plate 14. The material distribution assembly includes a material distribution auger 55 and a material guide plate 56. In this embodiment, the material guide hopper 11 is located in the middle of the box body 1, and the material distribution auger 55 is rotatably installed in the box body 1, and the rotation directions of the two ends of the material distribution auger 55 are opposite. The material distribution auger 55 is connected to an equalizing motor that drives it to rotate. The material guide plate 56 is located between the sieve plate 14 and the material distribution auger 55, and both sides of the material guide plate 56 are gradually inclined downward from the middle to the end, so that the slag moves from the middle of the material distribution auger 55 to both sides under the action of its own gravity and the material distribution auger 55, realizing semi-automatic material dropping.

[0056] The guide plate 56 is provided with a plurality of distribution holes 57. In this embodiment, the diameter of the distribution holes 57 gradually increases from the middle to the two sides, so that the slag gradually increases in particle size from the middle to the two sides. The material distribution auger 55 is arranged in the shell 60, and the guide plate 56 is arranged at the bottom of the shell 60. The shell 60 and the guide plate 56 are provided with water cooling channels or water cooling interlayers, and the shell 60 and the guide plate 56 are cooled by water cooling.

[0057] Of course, in this embodiment, the density of the heat exchange tubes 30 in the heat exchanger 9 with non-uniform tube spacing also needs to gradually decrease from the middle to the two sides.

[0058] Furthermore, in order to improve the cooling effect, the distribution auger 55 is hollow and connected to a circulating water pipe to cool the slag and recover the waste heat through cooling water. In order to ensure better cooling and waste heat recovery effects, a spiral cooling chamber 58 is provided on the distribution auger 55, and the cooling chamber 58 is connected to the inner cavity of the distribution auger 55 through a connecting hole 59. A plurality of connecting holes 59 are arranged at intervals along the spiral shape to increase the cooling area of ​​the slag, reduce the thermal wear of the auger blades, and increase their service life.

[0059] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A high-temperature slag separation and cooling distribution device based on blowing, comprising a box (1), characterized in that: A box cover (2) is fixedly mounted on the upper side of the box body (1), a material guide port is provided on the box cover (2), an outer tube (4) is fixedly mounted in the material guide port, an air inlet and an air outlet are respectively provided on opposite sides of the box body (1), an air pipe (5) is fixedly mounted in the air inlet and the air outlet, a plurality of slide grooves are provided on the inner wall of the box body (1), an equalizing component is slidably mounted in the slide grooves, a non-uniform tube spacing heat exchanger (9) is fixedly mounted on the inner wall of the box body (1), the non-uniform tube spacing heat exchanger (9) is located on the lower side of the equalizing component, and an ash treatment component is fixedly mounted on the inner wall of the non-uniform tube spacing heat exchanger (9); The equal distribution component comprises a plurality of sliders (6), wherein the plurality of sliders (6) are correspondingly slidably mounted in the slide grooves, a same sieve plate (14) is fixedly mounted on one side of the plurality of sliders (6), baffles (8) are fixedly mounted on both sides of the top of the sieve plate (14), a plurality of sieve holes are provided on the surface of the sieve plate (14), a plurality of partition bars (15) are fixedly mounted on the upper side of the sieve plate (14), vibration springs (7) are fixedly mounted on both upper and lower sides of the plurality of sliders (6), a transmission hole (23) is provided on the box cover (2), a transmission rod (16) is rotatably mounted in the transmission hole (23), a vibration unit is sleeved on the surface of the transmission rod (16), a servo motor (3) is fixedly mounted on the upper side of the box cover (2), a power assembly is fixedly mounted on the output end of the servo motor (3), and the power assembly is fixedly mounted on the surface of the transmission rod (16).

2. The high-temperature slag separation and cooling distribution device based on blowing according to claim 1 is characterized in that: The vibration unit comprises a pipe sleeve (51), the pipe sleeve (51) being sleeved and mounted on the surface of a transmission rod (16), a mounting hole being provided on the surface of the screen plate (14), the pipe sleeve (51) being fixedly mounted in the mounting hole, a reciprocating groove (53) being provided on the surface of the transmission rod (16), two limit blocks (52) being fixedly mounted on the inner wall of the pipe sleeve (51), and both of the two limit blocks (52) being slidably mounted in the reciprocating groove (53).

3. The high-temperature slag separation and cooling distribution device based on blowing according to claim 1 is characterized in that: The power assembly comprises a primary bevel gear (18), the primary bevel gear (18) being fixedly mounted on the output end of the servo motor (3); a driving rod (27) being rotatably mounted on the upper side of the box cover (2); a secondary bevel gear (19) being fixedly mounted on the top end of the driving rod (27); the secondary bevel gear (19) being meshed with the primary bevel gear (18); a driving gear (26) being fixedly mounted on the surface of the driving rod (27); a transmission gear (24) being fixedly mounted on the surface of the transmission rod (16); the driving gear (26) being meshed with the transmission gear (24).

4. The high-temperature slag separation and cooling distribution device based on blowing according to claim 3 is characterized in that: A plurality of connecting springs (12) are fixedly mounted on the inner wall of the outer tube (4); a same material discharge tube (13) is fixedly mounted on the other ends of the plurality of connecting springs (12); a material guide hopper (11) is fixedly mounted on the upper side of the material discharge tube (13); a limiting opening is provided on one side of the outer tube (4); a knocking block (21) is slidably mounted in the limiting opening; a reciprocating rod (20) is fixedly mounted on one side of the knocking block (21); a reciprocating block (22) is fixedly mounted on one end of the reciprocating rod (20); a reciprocating opening (17) is provided on the reciprocating block (22); a driving block (25) is fixedly mounted on the upper side of the transmission gear (24); the driving block (25) is slidably mounted in the reciprocating opening (17).

5. The high-temperature slag separation and cooling distribution device based on blowing according to claim 1 is characterized in that: The ash treatment component comprises a slag discharge unit, a heat exchange tube (30) is fixedly installed in the non-uniform tube spacing heat exchanger (9), a water inlet is provided at the lower side of the heat exchange tube (30), a water inlet pipe (42) is fixedly installed in the water inlet, and the water inlet pipe (42) is connected to a conveying pipe (44), a primary avoidance port is provided at the lower side of the non-uniform tube spacing heat exchanger (9), a water outlet is provided at the upper side of the heat exchange tube (30), and a secondary avoidance port is provided at the upper side of the non-uniform tube spacing heat exchanger (9), a liquid supply unit is fixedly installed on one side of the box body (1), a mounting groove is provided at the lower part of the non-uniform tube spacing heat exchanger (9), a flip unit is fixedly installed in the mounting groove, a through-opening is provided on the inner wall of the mounting groove, and a slag discharge unit is rotatably installed in the through-opening.

6. The high-temperature slag separation and cooling distribution device based on blowing according to claim 5 is characterized in that: The flip unit comprises a mounting bar (34), wherein the mounting bar (34) is fixedly mounted in the mounting groove, a plurality of rotating holes are formed on the upper side of the mounting bar (34), a toggle rod (33) is rotatably mounted in the rotating hole, a through hole is formed on the inner wall of the mounting groove, a power rod (39) is rotatably mounted in the through hole, a four-stage bevel gear (40) is fixedly mounted on the surface of the power rod (39), a three-stage bevel gear (38) is fixedly mounted on the bottom end of the toggle rod (33), the three-stage bevel gear (38) meshes with the four-stage bevel gear (40), a plurality of heat insulation boxes (41) are fixedly mounted on the lower side of the mounting bar (34), a through hole is formed on one side of the heat insulation box (41), and the power rod (39) is rotatably mounted in the through hole.

7. The high-temperature slag separation and cooling distribution device based on blowing according to claim 6 is characterized in that: The slag discharge unit comprises a discharge auger (37), the discharge auger (37) being rotatably mounted in the through-hole, a discharge port being provided at the lower side of the non-uniform tube spacing heat exchanger (9), a avoidance groove being provided at one side of the non-uniform tube spacing heat exchanger (9), a secondary gear (36) being fixedly mounted at one end of the discharge auger (37), a primary gear (32) being fixedly mounted at one end of the power rod (39), the primary gear (32) being meshed with the secondary gear (36), a drive motor (35) being fixedly mounted at one side of the housing (1), a motor hole being provided at one side of the housing (1), an output shaft of the drive motor (35) being coaxially fixedly connected to one end of the discharge auger (37), a thermocouple being installed at the discharge port at the discharge end of the discharge auger (37), a controller (54) being fixedly mounted at one side of the housing (1), the thermocouple being electrically connected to the controller (54), and the controller (54) being electrically connected to the drive motor (35).

8. The high-temperature slag separation and cooling distribution device based on blowing according to claim 6 is characterized in that: The liquid supply unit comprises a water injection box (28), the water injection box (28) being fixedly mounted on one side of the box body (1), a water injection port being provided on one side of the water injection box (28), a water injection pipe (43) being fixedly mounted in the water injection port, a delivery port being provided on the lower side of the water injection box (28), the delivery pipe (44) being fixedly mounted in the delivery port, a primary check valve being mounted on the water injection pipe (43), a secondary check valve being mounted on the delivery pipe (44), and a piston (45) being slidably mounted on the inner wall of the water injection box (28), and being combined with the piston (45) to form a reciprocating pump.

9. The high-temperature slag separation and cooling distribution device based on blowing according to claim 8 is characterized in that: The liquid supply unit further comprises a U-shaped rod (46), one end of which is fixedly connected to one side of the piston (45); a connecting hole is provided on one side of the housing (1); a rotating rod (31) is rotatably mounted in the connecting hole; a half gear (50) is fixedly mounted on one end of the rotating rod (31); the other end of the rotating rod (31) is coaxially fixedly connected to a power rod (39); a limit strip (49) is fixedly mounted on one side of the housing (1); a driving frame (48) is slidably mounted on the inner wall of the limit strip (49); teeth are provided on the inner wall of the driving frame (48); a connecting plate (47) is fixedly mounted on one side of the driving frame (48); one side of the connecting plate (47) is fixedly connected to the other end of the U-shaped rod (46).

10. A temperature control method for a high-temperature slag separation and cooling distribution device based on blowing according to any one of claims 1 to 9, characterized in that: The following steps are included S1. First, boiler ash is introduced from the guide hopper (11) and enters the box (1) through the discharge pipe (13). The ash is evenly distributed through the equalizing component in the box (1). The sieve plate (14) evenly distributes the boiler ash of different particle sizes into the corresponding partition frame (10) in turn for classification. Then, the ash enters the non-uniform tube spacing heat exchanger (9) to cool the particles of different particle sizes. S2, the output end of the servo motor (3) drives the power assembly to move, knocks the feeding pipe (13) to prevent blockage, and vibrates the screen plate (14) to increase the feeding efficiency. During the operation, the temperature of the boiler ash in different particle size areas is monitored by thermocouples, and the data is transmitted to the controller (54); S3, the output end of the driving motor (35) drives the toggle rod (33) and the discharging auger (37) to rotate. In the process of stirring the ash, the toggle rod (33) controls the uniformity of the slag discharge temperature of the ash of the same particle size. At the same time, the discharging auger (37) transports the boiler ash to the discharge port on the lower side of the non-uniform tube spacing heat exchanger (9) for discharge. For the slag with a temperature higher than the set temperature range, the controller (54) controls the corresponding driving motor (35) to reduce the rotation speed to reduce the discharging speed. For the slag with a temperature lower than the set temperature range, the controller (54) controls the driving motor (35) to increase the rotation speed to speed up the discharging speed, so that the temperature of the discharged boiler ash of different particle sizes is uniform.

Images