Multi-stage reversible heat exchange clinker cooler and use method thereof

Abstract

The invention discloses a multistage reversible heat exchange clinker cooler which comprises a quenching area, an efficient waste heat recovery area and a cooling area which are sequentially connected, the efficient waste heat recovery area comprises a plurality of stepped cooling sections which are sequentially arranged from high to low, and every two adjacent stepped cooling sections are connected through a discharging channel. And the clinker impacts the bottom plate of the discharging channel in the discharging channel to be scattered. According to the multistage reversible heat exchange clinker cooler, efficient heat exchange can be achieved, and meanwhile it is guaranteed that the cooling temperature of clinker is more uniform.

Description

Technical Field

[0001] The present invention relates to the field of clinker cooling, and in particular to a multi-stage reversible heat exchange clinker cooler and a method of using the same. Background Art

[0002] Clinker cooler is an important equipment for cooling high-temperature clinker in cement production. Its performance has a significant impact on clinker quality, cement quality and energy utilization efficiency.

[0003] Clinker coolers typically utilize a thick bed of clinker and fixed air beams, allowing cooling air to penetrate the bed horizontally. High-temperature clinker forms a thick bed on the cooler's grate. However, excessive clinker thickness creates excessive upward resistance to the cooling air, hindering its passage through the bed and preventing adequate cooling.

[0004] At present, due to the large differences in the sizes of clinker entering the cooler, some larger clinker only exchanges heat with the cold air in the cooler, and the inside of the clinker cannot be reliably cooled. As a result, the temperature of some clinker remains high after leaving the cooler, and the clinker cooling temperature is uneven. Summary of the Invention

[0005] The object of the present invention is to provide a multi-stage reversible heat exchange clinker cooler and a method of using the same, wherein the multi-stage reversible heat exchange clinker cooler can achieve efficient heat exchange while ensuring a more uniform cooling temperature of the clinker.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a multi-stage reversible heat exchange clinker cooler, comprising a rapid cooling zone, a high-efficiency waste heat recovery zone and a cooling zone connected in sequence. The high-efficiency waste heat recovery zone comprises a plurality of stepped cooling sections, and the plurality of stepped cooling sections are arranged in sequence from high to low. Two adjacent stepped cooling sections are connected by a discharge channel, and the clinker hits the bottom plate of the discharge channel in the discharge channel to be broken up.

[0007] Preferably, the material discharge channel is arranged in a vertical direction.

[0008] Preferably, at least one discharge channel is provided with a countercurrent heat exchange device, the countercurrent heat exchange device comprising a first partition and, the first partition is fixedly connected to two opposite surfaces of the discharge channel respectively, and the first partition is arranged to be inclined downward.

[0009] Preferably, the first partition and the second partition respectively include a plurality of air holes, and the cold air can move upward through the air holes.

[0010] Preferably, a plurality of first partitions are provided, and the plurality of first partitions are staggered along the height direction;

[0011] The downward extension line of the first partition intersects with the adjacent one below, and the downward extension line intersects with the first partition adjacent to the below.

[0012] Preferably, the plurality of first partitions are parallel to each other, and the plurality of first partitions are parallel to each other.

[0013] Preferably, a primary crusher is provided in the discharge channel near the quenching zone.

[0014] Preferably, a secondary crusher is provided in the discharge channel near the cooling zone to crush the clinker into smaller particles.

[0015] The present invention also provides a method for using the multi-stage reversible heat exchange clinker cooler, comprising:

[0016] Step 1: After the high-temperature clinker enters the clinker cooler, it moves from the quenching zone to the cooling zone;

[0017] Step 2: Cooling air is sent into the cooler from the bottom of the cooler;

[0018] Step 3: In the quenching zone, step cooling section and cooling zone, the clinker moves horizontally, and the cooling air passes through the clinker layer horizontally from below;

[0019] Step 4: In the discharge channel, the clinker moves downward, and the cooling air rises and moves relative to the clinker.

[0020] Preferably, in step 2, the closer the location is to the cooling zone, the smaller the cooling air supply volume is.

[0021] According to the above technical solution, the rapid cooling zone of the present invention is provided with a high-power blower, which introduces a large amount of cold air into the rapid cooling zone. The cold air quickly cools the high-temperature clinker entering from the inlet in the rapid cooling zone, ensuring that the temperature of the high-temperature clinker is rapidly reduced, preventing the C2S crystal form from being transformed and fixing the C3S mineral crystal form, thereby ensuring the cement strength and improving the clinker performance.

[0022] After leaving the rapid cooling zone, the clinker will enter the high-efficiency waste heat recovery zone. Compared with the traditional cooler that transports the clinker in a straight line, the high-efficiency waste heat recovery zone is equipped with multiple stepped cooling sections. By setting up discharge channels in adjacent stepped cooling sections, the contact time between the clinker and the cold air within a limited conveying length can be significantly increased, thereby improving the efficiency of heat exchange.

[0023] The clinker moves downward in the discharge channel, and the cooling air moves upward in the discharge channel, moving horizontally relative to the clinker. The cold air passes horizontally through the clinker layer. The use of this relative motion contact method significantly increases the contact area between the cooling air and the clinker, which can significantly improve the efficiency of heat exchange.

[0024] Furthermore, as the clinker comes into contact with the cold air, the upward-flowing air disperses the clinker, achieving uniform mixing. Compared to the traditional method where the clinker temperature is low on the surface and high in the middle of the layer, the provision of a discharge channel allows for a more uniform clinker temperature. Furthermore, once the clinker is evenly mixed, the cooling effect in the stepped cooling section is reliably enhanced. In particular, the even mixing of the clinker before each step-cooling section is extremely beneficial for improving heat exchange within the stepped cooling section.

[0025] By setting up multiple stepped cooling sections, the clinker can have more opportunities to be efficiently cooled and re-homogenized in the discharge channel. Therefore, the multi-stage reversible heat exchange clinker cooler has better cooling efficiency and can ensure a uniform cooling effect on the clinker.

[0026] Preferably, the stepped cooling section is connected to the quenching zone and the cooling zone respectively through discharge channels, so that the material can also exchange heat with the cold air in these discharge channels, further improving the heat exchange efficiency between the clinker and the cold air.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of a multi-stage reversible heat exchange clinker cooler;

[0030] Figure 2 yes Figure 1 A schematic diagram of a countercurrent heat exchange device;

[0031] Figure 3 It is a schematic diagram of a material discharge channel provided with a primary crusher;

[0032] Figure 4 This is a schematic diagram of a feeding channel equipped with a secondary crusher;.

[0033] Description of Reference Numerals

[0034] 1 rapid cooling zone 21 step cooling sections

[0035] 3 cooling zone 22 feeding channel

[0036] 23 bottom plate 4 air cannon

[0037] 5 blower 6 inlet

[0038] 71 first partition 72 second partition

[0039] 81 Primary Crusher 82 Secondary Crusher DETAILED DESCRIPTION

[0040] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0041] In the present invention, unless otherwise specified, directional words contained in terms such as "in sequence, high, low, adjacent, vertical, relative, parallel, close" merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0042] See also Figure 1 The multi-stage reversible heat exchange clinker cooler comprises a rapid cooling zone 1, a high-efficiency waste heat recovery zone and a cooling zone 3 connected in sequence. The high-efficiency waste heat recovery zone comprises a plurality of stepped cooling sections 21 arranged in a stepped manner. The plurality of stepped cooling sections 21 are arranged in sequence from high to low. Two adjacent stepped cooling sections 21 are connected by a discharge channel 22. The clinker hits the bottom plate 23 of the discharge channel 22 in the discharge channel 22 to be broken up.

[0043] Through the implementation of the above technical solution, the rapid cooling zone 1 is provided with a high-power blower 5, which introduces a large amount of cold air into the rapid cooling zone 1. The cold air quickly cools the high-temperature clinker entering through the inlet 6 in the rapid cooling zone 1, ensuring that the temperature of the high-temperature clinker is quickly reduced, preventing the C2S crystal form from being converted and fixing the C3S mineral crystal form, thereby ensuring the cement strength and improving the clinker performance.

[0044] After leaving the rapid cooling zone 1, the clinker will enter the high-efficiency waste heat recovery zone. Compared with the traditional cooler that transports the clinker in a straight line, the high-efficiency waste heat recovery zone is provided with multiple stepped cooling sections 21. By setting the discharge channel 22 in the adjacent stepped cooling sections 21, the contact time of the clinker with the cold air within the limited conveying length can be significantly increased, thereby improving the efficiency of heat exchange.

[0045] The clinker moves downward in the discharge channel 22, and the cooling air moves upward in the discharge channel 22, moving horizontally relative to the clinker. The cold air passes horizontally through the clinker layer. The use of this relative motion contact method significantly increases the contact area between the cooling air and the clinker, which can significantly improve the efficiency of heat exchange.

[0046] Furthermore, during the process of the clinker coming into contact with the cold air, the upward-flowing air can disperse the clinker, achieving a uniform mixing effect on the clinker. Compared with the conventional situation where the clinker temperature is low on the surface of the material layer and high in the middle of the material layer, the clinker temperature can be made more uniform by providing the discharge channel 22. Moreover, after the clinker is uniformly mixed, the cooling effect in the stepped cooling section 21 can be reliably improved. In particular, the clinker can be uniformly mixed before entering each stepped cooling section 21, which is very beneficial to improving the heat exchange in the stepped cooling section 21.

[0047] By providing multiple stepped cooling sections 21, the clinker can have more opportunities to be efficiently cooled and re-homogenized in the discharge channel 22. Therefore, the multi-stage reversible heat exchange clinker cooler has better cooling efficiency and can ensure a uniform cooling effect on the clinker.

[0048] Preferably, the stepped cooling section 21 is connected to the quenching zone 1 and the cooling zone 3 respectively through the discharge channels 22, so that the material can also exchange heat with the cold air in these discharge channels 22, further improving the heat exchange efficiency between the clinker and the cold air.

[0049] An air cannon 4 system is also provided in the quenching zone 1 , which uses the energy generated by the instantaneous release of air from the air cannon 4 to blow the clinker at the corners of the quenching zone 1 to prevent the clinker from accumulating in the quenching zone 1 .

[0050] Preferably, the rapid cooling zone 1 may also be provided with an ultrasonic material layer homogenization device, etc., to achieve the purpose of breaking up large pieces of clinker in real time, thereby avoiding the occurrence of phenomena such as "snowman" and "red river".

[0051] In this manner, preferably, the feeding channel 22 is arranged in a vertical direction.

[0052] During horizontal transportation, the clinker enters the discharge channel 22 and impacts the bottom plate 23 of the discharge channel 22 under the action of gravity. During the descent, the gravitational potential energy of the clinker is converted into kinetic energy, causing the clinker's falling speed to gradually increase. At the moment of impact, the clinker's speed reaches its maximum. Therefore, at this time, the impact force exerted by the bottom plate 23 of the discharge channel 22 on the clinker is also relatively large. This large impact force acts on the clinker, which can achieve the effect of breaking up large-sized clinker.

[0053] The discharge channel 22 is arranged vertically so that the clinker will not rub against the inner wall of the discharge channel 22 as much as possible during the falling process, which can reduce the kinetic energy loss of the clinker and thus obtain the maximum impact force at the moment of impact, which is beneficial to improving the clinker cooler's effect of breaking up large-sized clinker.

[0054] The bottom plate 23 of the discharge channel 22 is tilted downward, so that the falling clinker can slide into the cold section along the tilted bottom plate 23, avoiding the accumulation of clinker on the bottom plate 23 of the discharge channel 22. Moreover, since clinker is constantly falling from above, the impact force on the bottom plate 23 is always there. Under the action of this continuous impact force, relative vibration will occur between the clinker and the bottom plate, making it difficult for the clinker to adhere to the bottom plate 23, which is conducive to the clinker sliding from the tilted bottom plate 23 into the stepped cooling section 21.

[0055] The stepped cooling section 21 is arranged horizontally, and is provided with a horizontal conveying device, through which the clinker can be transported to the next process.

[0056] The stepped cooling section 21 is connected to the lowest position of the bottom plate 23, and the bottom plate 23 at least partially extends into the stepped cooling section 21. The portion extending to the stepped cooling section 21 serves as a transition section for conveying, so that the clinker can be smoothly transferred from the bottom plate 23 to the stepped cooling section 21.

[0057] In this embodiment, preferably, a countercurrent heat exchange device is provided in at least one discharge channel 22, and the countercurrent heat exchange device includes a first partition 71 and a second partition 72. The first partition 71 and the second partition 72 are respectively fixed to two opposite surfaces of the discharge channel 22, and the first partition 71 and the second partition 72 are arranged to be inclined downward.

[0058] During the falling process, the clinker will fall onto the first partition 71 or the second partition 72, and then move downward along the inclined surface of the first partition 71 or the second partition 72 until it hits the second partition 72 or the first partition 71 on the other side. After losing some speed due to the collision, the clinker continues to move obliquely downward along the second partition 72 or the first partition 71, and so on. Each time the clinker collides with the first partition 71 or the second partition 72, it will cause a part of the kinetic energy to be lost. Therefore, by setting the first partition 71 or the second partition 72, the falling speed of the clinker can be reduced, and the residence time of the clinker in the discharge channel 22 can be extended.

[0059] Moreover, the collision of the clinker with the first partition 71 or the second partition 72 will also achieve the effect of breaking up the clinker to a certain extent, and the repeated collision and sliding can also achieve the effect of evenly distributing the clinker.

[0060] In this embodiment, preferably, the first partition plate 71 and the second partition plate 72 respectively include a plurality of air holes, and the cold air can move upward through the air holes.

[0061] By providing the air holes, cooling air can pass through the air holes and the clinker on the first partition plate 71 or the second partition plate 72 to perform heat exchange with the clinker.

[0062] By arranging multiple layers of partitions in the discharge channel 22, the cold air can repeatedly exchange heat with the clinker in the discharge channel 22, which significantly improves the efficiency of the heat exchange.

[0063] Moreover, during the falling process, the clinker needs to slide from one partition to another many times. During the sliding process, the falling trajectory of the clinker is arc-shaped. During the arc-shaped falling process, the cold air and the clinker move in the opposite direction, which can disperse the clinker and achieve the purpose of homogenizing the clinker.

[0064] In this embodiment, preferably, a plurality of first partitions 71 and a plurality of second partitions 72 are provided, and the plurality of first partitions 71 and the second partitions 72 are staggered in the height direction;

[0065] The downward extension line of the first partition plate 71 intersects with the second partition plate 72 adjacent thereto, and the downward extension line of the second partition plate 72 intersects with the first partition plate 71 adjacent thereto.

[0066] Under the action of multiple first baffles 71 and second baffles 72, the clinker falls along a zigzag route in the discharge channel 22. Compared with the clinker falling directly along the discharge channel 22, this method can significantly increase the clinker's travel distance within a limited space, thereby extending the residence time of the clinker in the discharge channel 22 and ultimately improving the efficiency of heat exchange.

[0067] In this embodiment, preferably, the plurality of first separators 71 are parallel to each other, and the plurality of second separators 72 are parallel to each other.

[0068] The first partitions 71 are arranged parallel to each other so that as many first partitions 71 as possible can be arranged in the feed channel 22. Similarly, the second partitions 72 are arranged parallel to each other so that as many second partitions 72 as possible can be arranged.

[0069] Since the first partitions 71 and the second partitions 72 are arranged alternately, the number of the first partitions 71 and the number of the second partitions 72 are equal or differ by one.

[0070] In this embodiment, preferably, a primary crusher 81 is provided in the discharge channel 22 close to the quenching zone 1 .

[0071] The primary crusher 81 can crush large-sized clinker, so that the size of the clinker entering the subsequent stepped cooling section 21 can be effectively controlled.

[0072] At the same time, the clinker will be further broken up into smaller and more uniform pieces as it hits the bottom plate 23 during its subsequent falling process in the discharge channel 22, thereby achieving reliable crushing and breaking up of the clinker during the cooling process. The reliable breaking up of the clinker can also improve the cooling effect of the clinker cooler to a certain extent.

[0073] Preferably, a first partition 71 and a second partition 72 are respectively provided above and below the primary crusher 81. The upper first partition 71 inputs clinker into the primary crusher 81 along the rotation direction of the primary crusher 81. The clinker moves to the first partition 71 and slides into the primary crusher 81 through the first partition 71. The lower second partition 72 receives the crushed clinker, and the clinker falls onto the bottom plate 23 along the second partition 72.

[0074] By providing the first partition 71 and the second partition 72 , the clinker travel distance can be increased while the clinker movement speed is reduced, thereby delaying the heat exchange time between the secondary cooling air and the clinker and improving the heat exchange efficiency of the clinker coolant.

[0075] In this embodiment, preferably, a secondary crusher 82 is provided in the discharge channel 22 near the cooling zone 3 for crushing the clinker into smaller particles.

[0076] After being broken up by the primary crusher 81 and the plurality of discharge channels 22 , the particle size of the clinker is relatively small. The clinker can be further crushed by the secondary crusher 82 , so that the particles of the clinker are smaller and more uniform.

[0077] Smaller and more uniform clinker particles make the cooled clinker easier to store. When the cooled clinker is reduced to small and uniform particles, its storage efficiency is greatly improved, and a greater mass of clinker particles can be accommodated per unit volume. Furthermore, by controlling the clinker particle size to a smaller size through the secondary crusher 82, the clinker's fluidity is improved. Without large clinker particles blocking the discharge port, the problem of large particles clogging the discharge port can be effectively avoided, allowing for smoother clinker unloading.

[0078] The clinker entering the discharge channel 22 near the cooling zone 3 has a smaller particle size after primary crushing and breaking up through the discharge channel 22. When a secondary crusher 82 is set at this position to crush the clinker, the working load of the secondary crusher 82 is smaller, which can save kinetic energy.

[0079] Preferably, a first partition 71 and a second partition 72 are respectively provided above and below the secondary crusher 82. The upper first partition 71 inputs clinker to the secondary crusher 82 along the rotation direction of the primary crusher 81. The clinker moves to the first partition 71 and slides into the secondary crusher 82 from the first partition 71. The lower second partition 72 receives the crushed clinker, and the clinker falls onto the bottom plate 23 along the second partition 72.

[0080] By providing the first partition 71 and the second partition 72 , the clinker travel distance can be increased while the clinker movement speed is reduced, thereby delaying the heat exchange time between the secondary cooling air and the clinker and improving the heat exchange efficiency of the clinker coolant.

[0081] The present invention also provides a method for using a multi-stage reversible heat exchange clinker cooler, comprising:

[0082] Step 1: After the high-temperature clinker enters the clinker cooler, it moves from the rapid cooling zone 1 to the cooling zone 3;

[0083] Step 2: Cooling air is sent into the cooler from the bottom of the cooler;

[0084] Step 3: In the quenching zone 1, the stepped cooling section 21 and the cooling zone 3, the clinker moves horizontally, and the cooling air passes through the clinker layer horizontally from below;

[0085] Step 4: In the discharge channel 22, the clinker moves downward, and the cooling air rises and moves relative to the clinker.

[0086] After the clinker enters the clinker cooler, it will gradually move from the rapid cooling zone 1 to the cooling zone 3. During this movement, the clinker will pass through multiple discharge channels 22 and achieve the effect of being broken up and evenly mixed in the discharge channels 22.

[0087] A plurality of blowers 5 are provided at the bottom of the clinker cooler to provide cooling air to the clinker cooler. The cooling air passes through the clinker layer from below the grate plate and enters the clinker cooler as secondary cooling air. The clinker cooler is provided with an exhaust fan for extracting the secondary cooling air from the clinker cooler 5 and recycling the heat energy of the secondary cooling air. Through the cooperation of the blowers 5 and the exhaust fan, the cooling air can achieve reliable heat exchange and heat recovery in the clinker cooler.

[0088] The clinker in the rapid cooling zone 1, the stepped cooling section 21, and the cooling zone 3 is laid on the grate and moves in the horizontal direction. Cold air is blown in from below the grate, and the cooling air exchanges heat with the clinker as it passes through the clinker. The rapid cooling zone 1 is provided with an exhaust fan. Under the action of the exhaust fan in the rapid cooling zone 1, the secondary cooling air in the clinker cooler moves from bottom to top, so that in the discharge channel 22, the clinker encounters the secondary cooling air while moving downward and exchanges heat with the secondary cooling air. Therefore, by providing the discharge channel 22, the secondary cooling air can be reused, thereby improving the heat exchange efficiency of the clinker cooler. Therefore, when using the clinker cooler with multi-stage reversible heat exchange to cool clinker of the same mass, the amount of cooling air fed can be reduced.

[0089] In this manner, preferably, in step 2, the closer the position is to the cooling zone 3, the smaller the cooling air supply volume is.

[0090] In the high-efficiency waste heat recovery area, the discharge channel 22 can, on the one hand, achieve the breaking up and uniformity of the clinker, thereby improving the heat exchange efficiency of the clinker in the horizontal movement stage; on the other hand, in the discharge channel 22, the clinker and the secondary air undergo relative movement and heat exchange simultaneously, and the secondary air can be reused, thereby further improving the heat exchange efficiency of the clinker cooler. In addition, by setting a countercurrent heat exchange device, the residence time of the clinker in the discharge channel 22 can be effectively increased, further increasing the contact time between the clinker and the secondary air, thereby achieving more efficient heat exchange.

[0091] Therefore, after using the multi-stage reversible heat exchange clinker cooler, as the heat exchange efficiency is improved, the temperature of the clinker can be reliably reduced after passing through the rapid cooling zone and the high-efficiency waste heat recovery zone, so that the temperature of the clinker entering the cooling zone 3 is not much different from the preset clinker outlet temperature. Therefore, the cooling air supply volume of the cooling zone 3 only needs to be set to a smaller amount to meet the cooling requirements of the clinker. Therefore, the closer to the cooling zone 3, the smaller the cooling air supply volume.

[0092] Under the action of the secondary crusher, the clinker particles entering the cooling zone are smaller. By reducing the air supply volume in the cooling zone 3, the wind speed of the cooling air can be reduced, thereby ensuring reliable cooling of the clinker while avoiding the generation of dust, thereby achieving the purpose of saving kinetic energy.

[0093] The secondary cooling air formed after the heat exchange will exchange heat with the clinker again in the discharge channel 22 during the movement toward the outlet. After multiple heat exchanges, the temperature of the secondary cooling air gradually increases. These high-temperature cooling air can be extracted and sent to places such as the decomposition furnace where high-temperature air is needed, thereby realizing the reuse of these high-temperature gases and avoiding waste of heat energy.

[0094] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0096] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A multi-stage reversible heat exchange clinker cooler, characterized in that: The invention comprises a rapid cooling zone (1), a high-efficiency waste heat recovery zone and a cooling zone (3) connected in sequence. The high-efficiency waste heat recovery zone comprises a plurality of stepped cooling sections (21). The plurality of stepped cooling sections (21) are arranged in sequence from high to low. Two adjacent stepped cooling sections (21) are connected through a discharge channel (22). The clinker in the discharge channel (22) collides with the bottom plate (23) of the discharge channel (22) to be broken up.

2. The multi-stage reversible heat exchange clinker cooler according to claim 1, characterized in that: The material discharge channel (22) is arranged in a vertical direction.

3. The multi-stage reversible heat exchange clinker cooler according to claim 1, characterized in that: A countercurrent heat exchange device is provided in at least one feed channel (22), and the countercurrent heat exchange device comprises a first partition (71), wherein the first partition (71) is fixedly connected to two opposite surfaces of the feed channel (22), and the first partition (71) is arranged to be inclined downward.

4. The multi-stage reversible heat exchange clinker cooler according to claim 3, characterized in that: The first partition plate (71) and the second partition plate (71) respectively include a plurality of air holes, and cold air can move upward through the air holes.

5. The multi-stage reversible heat exchange clinker cooler according to claim 3, characterized in that: A plurality of first partitions (71) are provided, and the plurality of first partitions (71) are staggered along the height direction; The downward extension line of the first partition (71) intersects with the adjacent one below, and the downward extension line intersects with the first partition (71) adjacent to the below.

6. The multi-stage reversible heat exchange clinker cooler according to claim 5, characterized in that: The plurality of first partitions (71) are parallel to each other, and the plurality of first partitions (71) are parallel to each other.

7. The multi-stage reversible heat exchange clinker cooler according to claim 1, characterized in that: A primary crusher (81) is provided in the discharge channel (22) near the quenching zone (1).

8. The multi-stage reversible heat exchange clinker cooler according to claim 7, characterized in that: A secondary crusher (82) is provided in the material discharge channel (22) near the cooling zone (3) for crushing the clinker into smaller particles.

9. A method for using the multi-stage reversible heat exchange clinker cooler according to any one of claims 1 to 8, characterized in that: include: Step 1: After the high-temperature clinker enters the clinker cooler, it moves from the quenching zone (1) to the cooling zone (3); Step 2: Cooling air is sent into the cooler from the bottom of the cooler; Step 3: In the quenching zone (1), the stepped cooling section (21) and the cooling zone (3), the clinker moves horizontally, and the cooling air passes through the clinker layer horizontally from below; Step 4: In the discharge channel (22), the clinker moves downward, and the cooling air rises and moves relative to the clinker.

10. The method of use according to claim 9, characterized in that: In step 2, the closer the position is to the cooling zone (3), the smaller the cooling air supply volume is.

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