Preheating and heat preservation system for kaolin slurry storage cylinder

Abstract

This utility model discloses a preheating and insulation system for a kaolin slurry storage cylinder. A U-shaped heat exchange hood is circumferentially spaced around the bottom of the rotary kiln. The outlet of the U-shaped heat exchange hood is connected to the inlet pipe of a circulating water pump, and the outlet of the circulating water pump is connected to a spiral coil pipe. The spiral coil is wound within the space formed between the outer and inner cylinders of the spray tower slurry storage cylinder. The inlet is located at the bottom of the spray tower slurry storage cylinder, and the outlet of the spiral coil is located at the top of the spray tower slurry storage cylinder. A return water pipe connects the spiral coil to the inlet pipe of the U-shaped heat exchange hood. A slurry outlet is located at the bottom of the spray tower slurry storage cylinder, connected to the slurry pump inlet via a pipe. The slurry pump outlet is connected to a slurry pipe. The waste heat from the rotary kiln is used to heat the U-shaped heat exchange hood. The slurry cylinder is heated by a spiral coil water jacket, resulting in uniform heating. An external insulation layer is installed to maintain the slurry temperature for a long time, reducing energy consumption, improving spray product efficiency, and lowering production costs.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary kiln waste heat utilization equipment, specifically a kaolin slurry storage cylinder preheating and insulation system. Background Technology

[0002] In the kaolin processing industry, rotary kilns are commonly used thermal equipment. During operation, the surface of the kiln generates a large amount of waste heat. If this waste heat is not effectively utilized, it will not only waste energy but also cause thermal pollution to the environment. In addition, traditional spray slurry insulation technology usually heats the slurry through an external heating source, which undoubtedly increases production costs. The slurry heating process suffers from high energy consumption, low heating efficiency, and insufficient insulation effect of the slurry cylinder. Utility Model Content

[0003] The purpose of this invention is to provide a preheating and insulation system for kaolin mud storage cylinders, so as to solve the problems of high energy consumption, low heating efficiency and insufficient insulation effect of mud cylinders in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a preheating and insulation system for a kaolin slurry storage cylinder, comprising a rotary kiln, a U-shaped heat exchange hood, a spray tower storage cylinder, and a spiral coil.

[0005] The rotary kiln has U-shaped heat exchange hoods spaced circumferentially around its bottom. The bottom of each U-shaped heat exchange hood is in contact with the ground via a support rod. The hoods are filled with clean water, and their outlet is connected to the inlet pipe of a circulating water pump. The outlet of the circulating water pump is connected to a spiral coil pipe. The spiral coil is wound within the space formed between the outer and inner cylinders of the spray tower's slurry storage cylinder. Its inlet is located at the bottom of the slurry storage cylinder, and its outlet is located at the top. The outlet of the spiral coil is connected to the inlet pipe of the U-shaped heat exchange hood via a return water pipe.

[0006] The bottom of the spray tower's slurry storage cylinder is provided with a slurry outlet, which is connected to the slurry pump inlet via a pipeline. The slurry pump outlet is connected to a slurry pipe, which passes through the spray tower and is connected to a spray gun at the top.

[0007] Preferably, the bottom of the spray tower slurry storage cylinder has a double bottom structure, which is formed by welding cross-shaped reinforcing ribs, and the reinforcing rib grid is filled with foamed insulation material.

[0008] Preferably, the space between the spiral coil and the outer wall of the spray tower slurry storage cylinder, as well as the top of the spray tower slurry storage cylinder, are filled with foamed insulation material.

[0009] Preferably, it also includes a heat exchange shroud sensor connected to the U-shaped heat exchange shroud.

[0010] Preferably, it also includes a slurry storage tank temperature sensor connected to the slurry storage tank of the spray tower for monitoring the slurry temperature inside the slurry storage tank of the spray tower.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This design utilizes the waste heat of the rotary kiln to heat the U-shaped heat exchange hood. The slurry cylinder is heated by a spiral coil water jacket, ensuring uniform heating. An external insulation layer is installed to maintain the temperature of the slurry for a long time, reducing energy consumption, improving the efficiency of sprayed products, increasing spray output, and reducing production costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the cross-shaped reinforcing ribs and the foamed insulation material filling structure of this utility model.

[0015] In the diagram: 1. Rotary kiln; 2. U-shaped heat exchange hood; 3. Circulating water pump; 4. Spray tower slurry storage tank; 5. Spiral coil; 6. Spiral coil outlet; 7. Return water pipe; 8. Slurry pump; 9. Slurry pipe; 10. Spray gun; 11. Spray tower; 12. Heat exchange hood sensor; 13. Slurry storage tank temperature sensor; 14. Foamed insulation material; 15. Cross reinforcing rib. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figure 1-2 One embodiment of this utility model provides a kaolin slurry storage tank preheating and insulation system, comprising a rotary kiln 1, a U-shaped heat exchange hood 2, a spray tower storage tank 4, and a spiral coil 5.

[0021] A U-shaped heat exchange hood 2 is circumferentially spaced around the bottom of the rotary kiln 1. A heat exchange hood sensor 12 is connected to the U-shaped heat exchange hood 2. The bottom of the U-shaped heat exchange hood 2 is in contact with the ground via a support rod. The U-shaped heat exchange hood 2 is filled with clean water. It absorbs the heat energy emitted by the rotary kiln 1 and heats the water inside. Simultaneously, the heat exchange hood sensor 12 monitors the internal water temperature and ensures it reaches the required temperature. The outlet of the U-shaped heat exchange hood 2 is connected to the inlet pipe of the circulating water pump 3. The circulating water pump 3 can be adjusted to regulate the output of the waste heat recovery device as needed, maintaining the slurry within a suitable temperature range, thereby ensuring stable process parameters and product quality. The outlet of the circulating water pump 3 is connected to the spiral coil 5 pipe. The circulating water pump 3 is used for... The U-shaped heat exchange hood 2 transports heated water to the spiral coil 5. The spiral coil 5 is wound around the space formed between the outer and inner cylinders of the spray tower slurry storage cylinder 4. The inlet is located at the bottom of the spray tower slurry storage cylinder 4, and the outlet 6 is located at the top. As the hot water flows through the spiral coil 5, it exchanges heat with the inner wall of the spray tower slurry storage cylinder 4, transferring heat to the slurry inside. The spiral coil 5 also extends the flow path of the hot water in the spray tower slurry storage cylinder 4, increasing the heat transfer time with the slurry. When the hot water enters the spiral coil 5, the high-temperature hot water releases heat at the bottom coil section, rapidly raising the base temperature of the low-temperature slurry. Simultaneously, the heat rises, and as the hot water spirals upwards, the temperature gradually increases. The cooled hot water is used to supplement the heating of the upper and middle layers of mud through the inner cylinder wall, achieving temperature field equilibrium control. It is connected to the inlet pipe of the U-shaped heat exchange hood 2 via the return water pipe 7. After the spiral coil 5 completes the heat exchange with the spray tower storage cylinder 4, the cooled hot water flows back into the U-shaped heat exchange hood 2 through the return water pipe 7 for further heat exchange with the mud. The bottom of the spray tower storage cylinder 4 has a slurry outlet. The mud in the spray tower storage cylinder 4, after heat exchange with the spiral coil 5, maintains a constant temperature. The slurry outlet at the bottom is used to transport the mud to the mud pump 8 through a pipeline. The outlet is connected to the inlet of the mud pump 8 through a pipeline. The mud pump 8 is used to atomize the heated mud through the spray gun 10. The outlet of the mud pump 8 is connected to a mud pipe. 9. The mud pipe 9 penetrates the spray tower 11 and is connected to the top of the spray gun 10. The spray gun 10 is used to spray the heated mud into atomized form. The bottom of the spray tower storage cylinder 4 has a double bottom structure, which is formed by welding cross reinforcing ribs 15 to form a grid support frame. This evenly distributes the bottom load and effectively prevents the bottom of the spray tower storage cylinder 4 from deforming due to the weight of the mud or thermal stress. The cross reinforcing ribs 15 divide the double bottom into independent grid units and fill them with foamed insulation material 14 to reduce the heat conduction path of the metal ribs and reduce heat loss. The reinforcing rib grid is filled with foamed insulation material 14. The space between the spiral coil 5 and the outer wall of the spray tower storage cylinder 4, as well as the top of the spray tower storage cylinder 4, are filled with foamed insulation material 14 for heat preservation and insulation, maintaining a stable internal temperature of the equipment.Reduce heat loss.

[0022] The slurry storage tank temperature sensor 13 is connected to the slurry storage tank 4 of the spray tower to monitor the slurry temperature inside the slurry storage tank 4 and ensure that the slurry is within a suitable temperature range.

[0023] In operation, the U-shaped heat exchange hood 2 collects the waste heat generated by the rotary kiln 1 and heats the water in the U-shaped heat exchange hood 2. After the water temperature is monitored by the heat exchange hood sensor 12 and reaches the predetermined temperature, the heated water is sent to the spiral coil 5 of the spray tower slurry storage cylinder 4 by the circulating water pump 3 to heat the slurry. The high-temperature hot water releases heat in the bottom coil section, rapidly raising the base temperature of the low-temperature slurry. Simultaneously, the rising heat further heats the slurry, and as the hot water spirals upward, the gradually decreasing temperature of the hot water supplements the heating of the middle and upper layers of slurry through the inner cylinder wall, achieving balanced temperature control. The outer perimeter and bottom of the spray tower slurry storage cylinder 4 are filled with foamed insulation material 14 to prevent heat loss. The heated slurry is pumped into the spray tower 11 by the slurry pump 8 and atomized by the spray gun 10 to form the product. The slurry storage cylinder temperature sensor 13 monitors the temperature of the slurry in the spray tower slurry storage cylinder 4 and adjusts the output of the circulating water pump 3 as needed to maintain the slurry within a suitable temperature range. This ensures stable process parameters and stable product quality.

[0024] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A preheating and insulation system for a kaolin slurry storage cylinder, characterized in that: It includes a rotary kiln (1), a U-shaped heat exchange hood (2), a spray tower slurry storage cylinder (4), and a spiral coil (5). The rotary kiln (1) has U-shaped heat exchange hoods (2) spaced around its bottom outer circumference. The bottom of the U-shaped heat exchange hoods (2) is in contact with the ground through a support rod. The U-shaped heat exchange hoods (2) are filled with clean water. The outlet of the U-shaped heat exchange hoods (2) is connected to the inlet pipe of the circulating water pump (3). The outlet of the circulating water pump (3) is connected to the spiral coil (5) pipe. The spiral coil (5) is wound around the space formed between the outer and inner cylinders of the spray tower slurry storage cylinder (4). The inlet is located at the bottom of the spray tower slurry storage cylinder (4), and the outlet (6) of the spiral coil is located at the top of the spray tower slurry storage cylinder (4). It is connected to the inlet pipe of the U-shaped heat exchange hoods (2) through a return water pipe (7). The bottom end of the spray tower slurry storage cylinder (4) is provided with a slurry outlet, which is connected to the slurry inlet of the mud pump (8) through a pipeline. The slurry outlet of the mud pump (8) is connected to a mud pipe (9), which passes through the spray tower (11) and is connected to a spray gun (10) at the top.

2. The kaolin slurry storage cylinder preheating and insulation system according to claim 1, characterized in that: The bottom of the spray tower slurry storage cylinder (4) is a double bottom structure, which is formed by welding cross reinforcing ribs (15), and the reinforcing rib grid is filled with foamed insulation material (14).

3. The kaolin slurry storage cylinder preheating and insulation system according to claim 1, characterized in that: The spiral coil (5) and the outer wall of the spray tower slurry storage cylinder (4) are filled with foamed insulation material (14).

4. The kaolin slurry storage cylinder preheating and insulation system according to claim 1, characterized in that: It also includes a heat exchange hood sensor (12), which is connected to the U-shaped heat exchange hood (2).

5. The kaolin slurry storage cylinder preheating and insulation system according to claim 1, characterized in that: It also includes a slurry storage cylinder temperature sensor (13), which is connected to the slurry storage cylinder (4) of the spray tower and is used to monitor the slurry temperature inside the slurry storage cylinder (4) of the spray tower.

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