Grate cooler fixed bed air chamber balance adjusting device

Abstract

The invention provides a grate cooler fixed bed air chamber balance adjusting device, and relates to the technical field of grate coolers, the grate cooler fixed bed air chamber balance adjusting device comprises a zoning air chamber, and a first center zoning compartment, a second center zoning compartment, a third center zoning compartment, a first side column zoning compartment, a second side column zoning compartment and two third side column zoning compartments are arranged above the zoning air chamber. By arranging the first center partition compartment, the second center partition compartment, the third center partition compartment, the first side column partition compartment, the second side column partition compartment and the third side column partition compartment, the seven partitions are controlled differently during use, corresponding air volumes are adjusted according to the distribution conditions in the seven partitions, and the air volume is adjusted according to the distribution conditions in the seven partitions. And the air short circuit caused by the fact that thin material layer places and edge columns are easy to blow through and blow through is avoided, and the working efficiency of the grate cooler is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of grate coolers, and in particular relates to a grate cooler fixed bed air chamber balance regulating device. Background Art

[0002] Grate cooler is an important main equipment in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker, and provide hot air for rotary kiln and decomposition furnace, etc. It is the main equipment for heat recovery of burning system. Generally, the fixed bed air chamber of grate cooler is divided into two areas. The central wind area is the centralized air supply cooling area. The fan is equipped with large air volume and high air pressure to cool the clinker in a centralized manner. In the surrounding side row areas, the fan is equipped with a smaller air volume and centralized side row air supply.

[0003] During the actual operation of the grate cooler, the material distribution of the fixed bed is uneven due to the fact that the material drop point of the cement kiln is biased to one side and the clinker calcination and granulation conditions are different. The material layer at the junction of the fixed bed and the movable bed is thin, which leads to uneven distribution of materials in the fixed bed. If the same air supply volume is continued to be used on the uneven material bed, either the air volume is too small to cool the materials, or the areas with large air volume and thin material layers and edge rows are easily blown through first, causing wind short circuit. When the granulation is not good, sand is raised, the secondary air temperature is reduced, and the coal consumption and calcination quality of cement are increased. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a grate cooler fixed bed air chamber balance adjustment device to more accurately solve the above problems.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention proposes a balanced adjustment device for a fixed bed air chamber of a grate cooler, comprising a partitioned air chamber, wherein a first central partitioned compartment, a second central partitioned compartment, a third central partitioned compartment, a first side column partitioned compartment, a second side column partitioned compartment and two third side column partitioned compartments are arranged above the partitioned air chamber, and ventilation ducts are connected to the bottoms of the first central partitioned compartment, the second central partitioned compartment, the third central partitioned compartment, the first side column partitioned compartment, the second side column partitioned compartment and the two third side column partitioned compartments, and the ventilation ducts are communicated with the partitioned air chambers.

[0007] In one example, a first wind zone and a second wind zone are provided in the partitioned air chamber, the first central partition compartment, the second central partition compartment, and the third central partition compartment are connected to the first wind zone, and the first side column partition compartment, the second side column partition compartment, and the two third side column partition compartments are connected to the second wind zone.

[0008] In one example, both ends of the partitioned air chamber are fixedly connected to air ducts, and the first air zone and the second air zone are respectively connected to the two air ducts.

[0009] In one example, one side of the first central partition compartment is fixed to one side of the second central partition compartment, the third central partition compartment is located on one side of the first central partition compartment and the second central partition compartment, and the third central partition compartment is fixed to the first central partition compartment and the second central partition compartment.

[0010] In one example, the two third side column partition compartments are respectively located on the side farther away from the first central partition compartment and the second central partition compartment, the first side column partition compartment and the second side column partition compartment are in contact with each other, and are located on the other side of the first central partition compartment and the second central partition compartment, opposite to the third central partition compartment.

[0011] In one example, the first wind zone in the partitioned wind chamber is supplied with air by a large air volume and air pressure fan, and the second wind zone is supplied with air by a fan.

[0012] In one example, air volume regulating valves are installed on the ventilation ducts below the first central partition compartment, the second central partition compartment, the third central partition compartment, the first side column partition compartment, the second side column partition compartment, and the two third side column partition compartments.

[0013] In one example, the first side column partition compartment and the second side column partition compartment are respectively fixedly connected to the first partition partition plate and the second partition partition plate, the first central partition compartment, the second central partition compartment and one side of the two third side column partition compartments are fixedly connected to the third partition partition plate, the third partition partition plate is fixedly connected to the first side column partition compartment and the second side column partition compartment, one side of the third central partition compartment is fixedly connected to the fourth partition plate, and the two fourth partition plates are respectively fixedly connected to the two third side column partition compartments.

[0014] The grate cooler fixed bed air chamber balance adjustment device proposed by the present invention can bring the following beneficial effects:

[0015] Firstly, by setting the first central partition compartment, the second central partition compartment, the third central partition compartment, the first side column partition compartment, the second side column partition compartment and the third side column partition compartment, the seven partitions are controlled differently during use, mainly controlling the air volume in different partitions. According to the distribution of materials in the seven partitions on the fixed bed, the air volume in the air zone with thicker materials is large, thereby improving the cooling effect of the air zone, while the air volume in the area with thinner materials is reduced to avoid the areas with thin material layers and side columns being easily blown through and blown through first, causing air short circuit, which is beneficial to improving the working efficiency of the grate cooler;

[0016] Secondly, by setting the first wind zone and the second wind zone, the first central partition compartment, the second central partition compartment and the third central partition compartment are controlled by the first wind zone, and air is supplied by a large air volume and air pressure fan. The air volume is large, and a large air volume can be provided for the central area. At the same time, the third central partition compartment is located near the side column, so that even if the cement kiln drop point is biased to one side, it will also fall in the central area. Even if the thickness is large, the cooling effect can be guaranteed by the large air volume. The first side column partition compartment, the second side column partition compartment and the two third side column partition compartments are located in the side column area, and there is not much material. The fan can meet the air supply demand, and reasonable matching can improve the effect while saving costs;

[0017] Thirdly, by setting the air volume regulating valve, the materials in different partitions of the side zone or the center zone are also different. The air volume of each partition can be adjusted by the air volume regulating valve during use. During operation, the cooling air volume of each partition is adjusted in stages according to the granulation situation of the material. This can ensure that the maximum air volume is opened to cool the clinker in each partition to the maximum extent without blowing through or blowing through, causing air short circuit, and weakening the cooling effect of the rapid cooling section, thereby giving full play to the effectiveness of the grate cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the structures of the first partition partition, the second partition partition and the third partition partition of the present invention.

[0022] Figure 3 It is a top view schematic diagram of the present invention.

[0023] Figure 4 It is a side view schematic diagram of the present invention.

[0024] Figure 5 It is a schematic diagram of the first central partition compartment, the second central partition compartment, the third central partition compartment, the first side column partition compartment, the second side column partition compartment and the third side column partition compartment of the present invention.

[0025] Figure 6 It is a schematic diagram of the ventilation duct and the air volume regulating valve of the present invention.

[0026] In the figure: 1. Partition air chamber; 2. First center partition compartment; 3. Second center partition compartment; 4. Third center partition compartment; 5. First side partition compartment; 6. Second side partition compartment; 7. Third side partition compartment; 8. Ventilation duct; 9. First air zone; 10. Second air zone; 11. Air duct; 12. First partition partition; 13. Second partition partition; 14. Third partition partition; 15. Fourth partition; 16. Air volume regulating valve. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0028] like Figure 1 to Figure 6 As shown, an embodiment of the present invention proposes a grate cooler fixed bed air chamber balance adjustment device, including a partition air chamber 1, above which are arranged a first central partition compartment 2, a second central partition compartment 3, a third central partition compartment 4, a first side column partition compartment 5, a second side column partition compartment 6 and two third side column partition compartments 7, the first central partition compartment 2, the second central partition compartment 3, the third central partition compartment 4, the first side column partition compartment 5, the second side column partition compartment 6 and the two third side column partition compartments 7 are all connected to a ventilation duct 8 below, and the ventilation duct 8 is connected to the partition air chamber 1. The present device is a fixed bed in a grate cooler, which is different from the existing fixed bed which only has a central partition compartment 2, a second central partition compartment 3, a third central partition compartment 4, a first side column partition compartment 5, a second side column partition compartment 6 and two third side column partition compartments 7. Two wind zones are set, and the device re-plans the existing two wind zones into 7 wind zones, namely the first central partition compartment 2, the second central partition compartment 3, the third central partition compartment 4, the first side column partition compartment 5, the second side column partition compartment 6 and the two third side column partition compartments 7. When in use, the 7 partitions are controlled differently, mainly controlling the air volume in different partitions. According to the distribution of materials in the 7 partitions on the fixed bed, the air volume is large in the air zone with thicker materials to improve the cooling effect of the air zone, while the air volume is reduced in the area with thinner materials to avoid the thin material layer and the side columns from being easily blown through and blown through first, causing wind short circuit, which is beneficial to improving the working efficiency of the grate cooler.

[0029] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, a first wind zone 9 and a second wind zone 10 are provided in the partition wind chamber 1, the first central partition compartment 2, the second central partition compartment 3, and the third central partition compartment 4 are connected to the first wind zone 9, the first side column partition compartment 5, the second side column partition compartment 6, and the two third side column partition compartments 7 are connected to the second wind zone 10, both ends of the partition wind chamber 1 are fixedly connected to the wind duct 11, the first wind zone 9 and the second wind zone 10 are respectively connected to the two wind ducts 11, the first wind zone 9 in the partition wind chamber 1 is supplied with air by a large air volume and air pressure fan, the second wind zone 10 is supplied with air by a fan, one side of the first central partition compartment 2 is fixed to one side of the second central partition compartment 3, and the third side column partition compartment 7 is connected to the second wind zone 10. The central partition compartment 4 is located on one side of the first central partition compartment 2 and the second central partition compartment 3, the third central partition compartment 4 is fixed to the first central partition compartment 2 and the second central partition compartment 3, the two third side partition compartments 7 are respectively located on the side farther away from the first central partition compartment 2 and the second central partition compartment 3, the first side partition compartment 5 and the second side partition compartment 6 are in contact with each other, located on the other side of the first central partition compartment 2 and the second central partition compartment 3, opposite to the third central partition compartment 4, the first central partition compartment 2, the second central partition compartment 3, the third central partition compartment 4, the first side partition compartment 5, the second side partition compartment 6 Air volume regulating valves 16 are installed on the ventilation ducts 8 below the partition compartments 6 and the two third side partition compartments 7. In this fixed bed, the first central partition compartment 2, the second central partition compartment 3, and the third central partition compartment 4 are controlled by the first wind zone, and air is supplied by a large air volume and air pressure fan. The large air volume can provide a large air volume for the first central partition compartment 2, the second central partition compartment 3, and the third central partition compartment 4 located in the central area. At the same time, the third central partition compartment 4 is located near the side column, so even if the cement kiln drop point is biased to one side, it will also fall in the central area. Even if the thickness is large, cooling can still be guaranteed through large air volume. The first side column partition compartment 5, the second side column partition compartment 6 and the two third side column partition compartments 7 are located in the side column area. There is not much material, and the air supply demand can be met by the fan. The air volume of each wind zone is transported by the ventilation duct 8. The materials in different partition positions in the side column area or the central area are also different. When in use, the air volume of each partition can be adjusted by the air volume regulating valve 16. During operation, the cooling air volume of each partition is adjusted in stages according to the granulation situation of the material, which can ensure that the maximum air volume is opened to cool the clinker on each partition to the maximum extent without blowing through or blowing through, causing wind short circuit, weakening the cooling effect of the rapid cooling section, and giving full play to the effect of the grate cooler.

[0030] As 5 and Figure 6As shown, the first side column partition compartment 5 and the second side column partition compartment 6 are respectively fixedly connected to the first partition partition plate 12 and the second partition partition plate 13, the first central partition compartment 2, the second central partition compartment 3 and one side of the two third side column partition compartments 7 are fixedly connected to the third partition partition plate 14, the third partition partition plate 14 is fixedly connected to the first side column partition compartment 5 and the second side column partition compartment 6, one side of the third central partition compartment 4 is fixedly connected to the fourth partition partition plate 15, and the two fourth partition partition plates 15 are respectively connected to the two third side column partition compartments Chamber 7 is fixedly connected, and a fourth partition partition 15 and a third partition partition 14 are arranged around the first central partition compartment 2, the second central partition compartment 3, and the third central partition compartment 4 in the central area, which play a certain blocking role for the material. The third partition partition 14 prevents a large amount of material from shifting to the first side column partition compartment 5 and the second side column partition compartment 6 area. The first partition partition 12 and the second partition partition 13 are used to block the material, so that the remaining small amount of material falls into the first side column partition compartment 5 and the second side column partition compartment 6 for cooling.

[0031] By dividing the two wind zones into seven wind zones, the fixed bed uses air more efficiently after the transformation. The air volume is set according to the thickness of different material layers, and thick material layer operations are performed. The wind pressure is increased from the original 10,000 Pa to 12,000-13,000 Pa, and the thickness of the grate cooler material layer is increased by 150 mm. The cooling time and cooling air volume of the clinker in the high temperature section are increased, and the material temperature out of the grate cooler is reduced by 5-10°C. The tertiary air temperature reaches above 950°C, the firing zone in the kiln is extended from the original 15 meters to 18 meters, and the cooling zone in front of the kiln is also better formed. After the transformation, the 3-day strength of the clinker is increased by 3.2 MPa compared with before, and the clinker grinding time is reduced by 4 minutes, which greatly improves the effect and efficiency.

[0032] Working principle: a first central partition compartment 2, a second central partition compartment 3, a third central partition compartment 4, a first side column partition compartment 5, a second side column partition compartment 6 and two third side column partition compartments 7 are arranged. The first central partition compartment 2, the second central partition compartment 3 and the third central partition compartment 4 are controlled by the first wind zone and are supplied with air by a large air volume and air pressure fan. The large air volume can provide a large air volume for the first central partition compartment 2, the second central partition compartment 3 and the third central partition compartment 4 located in the central area. Meanwhile, the third central partition compartment 4 is located close to the side column. Thus, even if the cement kiln drop point is biased to one side, it will still fall in the central area. Even if the thickness is large, the cooling effect can also be guaranteed by a large air volume. The first side column partition compartment 5, the second side column partition compartment 6 and the two third side column partition compartments 7 are located in the side column area. There is not much material, and the air supply demand can be met by the fan. The materials in different partition positions in the side column area or the central area are also different. When in use, the air volume of each partition can be adjusted by the air volume regulating valve 16. During operation, the cooling air volume of each partition is adjusted in stages according to the granulation situation of the material. This can ensure that the maximum air volume is opened to cool the clinker on each partition to the maximum extent without blowing through or blowing through, causing air short circuit, weakening the cooling effect of the rapid cooling section, and giving full play to the effectiveness of the grate cooler.

[0033] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0034] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A grate cooler fixed bed air chamber balance adjustment device, characterized in that: The invention comprises a partitioned air chamber (1), wherein a first central partitioned compartment (2), a second central partitioned compartment (3), a third central partitioned compartment (4), a first side column partitioned compartment (5), a second side column partitioned compartment (6) and two third side column partitioned compartments (7) are arranged above the partitioned air chamber (1); a ventilation duct (8) is connected below the first central partitioned compartment (2), the second central partitioned compartment (3), the third central partitioned compartment (4), the first side column partitioned compartment (5), the second side column partitioned compartment (6) and the two third side column partitioned compartments (7); and the ventilation duct (8) is in communication with the partitioned air chamber (1).

2. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: The partitioned air chamber (1) is provided with a first air zone (9) and a second air zone (10); the first central partitioned compartment (2), the second central partitioned compartment (3), and the third central partitioned compartment (4) are connected to the first air zone (9); and the first side column partitioned compartment (5), the second side column partitioned compartment (6), and the two third side column partitioned compartments (7) are connected to the second air zone (10).

3. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: Both ends of the partitioned air chamber (1) are fixedly connected to air ducts (11), and the first air zone (9) and the second air zone (10) are respectively connected to the two air ducts (11).

4. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: One side of the first central partition compartment (2) is fixed to one side of the second central partition compartment (3); the third central partition compartment (4) is located on one side of the first central partition compartment (2) and the second central partition compartment (3); and the third central partition compartment (4) is fixed to both the first central partition compartment (2) and the second central partition compartment (3).

5. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: The two third side column partition compartments (7) are respectively located on the side farther away from the first central partition compartment (2) and the second central partition compartment (3); the first side column partition compartment (5) and the second side column partition compartment (6) are in contact with each other and are located on the other side of the first central partition compartment (2) and the second central partition compartment (3), opposite to the third central partition compartment (4).

6. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: The first wind zone (9) in the zoned wind chamber (1) is supplied with air by a large air volume and air pressure fan, and the second wind zone (10) is supplied with air by a fan.

7. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: Air volume regulating valves (16) are installed on the ventilation ducts (8) below the first central partition compartment (2), the second central partition compartment (3), the third central partition compartment (4), the first side column partition compartment (5), the second side column partition compartment (6) and the two third side column partition compartments (7).

8. The grate cooler fixed bed air chamber balance adjustment device according to claim 1, characterized in that: The first side column partition compartment (5) and the second side column partition compartment (6) are respectively fixedly connected to a first partition partition plate (12) and a second partition partition plate (13); one side of the first central partition compartment (2), the second central partition compartment (3) and the two third side column partition compartments (7) is fixedly connected to a third partition partition plate (14); the third partition partition plate (14) is fixedly connected to the first side column partition compartment (5) and the second side column partition compartment (6); one side of the third central partition compartment (4) is fixedly connected to a fourth partition partition plate (15); and the two fourth partition partition plates (15) are respectively fixedly connected to the two third side column partition compartments (7).

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