A suspended air cooling device for high-temperature powdery materials
By designing a suspended air-cooling device for high-temperature powdered materials, and using the fluidized bed principle and air-cooling method for quenching, the problem of low quenching efficiency of high-temperature powdered materials in the prior art is solved, and efficient heat exchange and stable material transportation are achieved.
Patent Information
- Application Number
- CN202421386148.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The prior art is difficult to effectively quench high-temperature powdered cement materials, resulting in difficult transportation and cyclic enrichment of harmful elements.
A suspended air-cooling device for high-temperature powdered materials is designed, and the fluidized bed principle and air-cooling method are used for quenching. Through the coordination of both sides and bottom air sources, efficient heat exchange is achieved and materials are prevented from sticking to the wall.
It significantly improves the quenching efficiency of the material, reduces the temperature to about 170℃, facilitates transportation, and prevents the material from sticking to the wall and reduces the cyclic enrichment of harmful elements.
Smart Images
Figure CN222718475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement air cooling, in particular to a suspended air cooling device for high-temperature powdery materials. Background Art
[0002] In the development history of my country's cement industry, the first generation of kilns is the vertical kiln, the second generation is the hollow dry kiln, the third generation is the wet long kiln, the fourth generation is the Lipol kiln, the fifth generation is the preheater kiln, and the sixth generation is the pre-decomposition kiln. With the continuous changes in kiln types, the scenarios corresponding to each reaction in the material are also gradually changing. As far as current technology is concerned, the cyclone is mainly responsible for the preheating and dehydration of materials, the decomposition furnace is mainly responsible for the decomposition of carbonates in the material, and the rotary kiln is mainly responsible for the solid-phase reaction and clinker sintering of the material. At different stages, the types and quantities of intermediate minerals are different, and their physical and chemical properties have certain differences, so materials in different parts have different application scenarios.
[0003] At present, the hot raw materials entering the kiln are the most studied. After the carbonate decomposition reaction occurs in the decomposition furnace, the decomposition rate can generally reach about 93%. At this time, there is still a large amount of active CaO in the hot raw materials entering the kiln, which can be used for hot raw material desulfurization. At the same time, the material contains more harmful elements such as potassium, sodium, sulfur, and chlorine. The cyclic enrichment of harmful components can also be reduced by discharging part of the hot raw materials. However, the temperature of the hot raw materials entering the kiln is about 860℃, which is difficult to transport directly. It needs to be quenched to facilitate transportation while maintaining the original state of the material. Utility Model Content
[0004] The purpose of the utility model is to provide a suspended air cooling device for high-temperature powdery materials to overcome the above-mentioned defects in the prior art.
[0005] A suspended air cooling device for high-temperature powdered materials comprises an air cooling cylinder, a side air duct, a feed pipe and a bottom air duct. The top of the air cooling cylinder is provided with a connecting pipe connected to a dust collector. Two side air ducts are provided and arranged on the side of the air cooling cylinder. Two feed pipes are provided and symmetrically arranged on the air cooling cylinder. The bottom air duct is provided at the lower end of the air cooling cylinder.
[0006] Preferably, the two side air ducts are respectively tangent to the side surfaces of the air cooling cylinder.
[0007] Preferably, the two side air ducts are arranged in parallel.
[0008] Preferably, the lower end of the bottom air duct is a trumpet-shaped structure.
[0009] The utility model has the following advantages:
[0010] 1. Using the fluidized bed principle, the design is similar to the decomposition furnace structure, and the air cooling method is used to rapidly cool the high-temperature materials taken from the production line.
[0011] 2. The side air inlet adopts double air inlet mode, and cooperates with the lower air inlet to achieve the effect of "cold air carrying hot materials" in the heat exchange unit, greatly improving the heat exchange efficiency and preventing the material from "sticking to the wall";
[0012] 3. The double-point feeding is adopted and arranged with the side wind rotary cutting method, which is conducive to material dispersion and improves heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 and Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model at different angles.
[0014] Figure 3 It is a front view of the utility model.
[0015] Figure 4 This is a process flow chart of air cooling of high-temperature powdered materials in the utility model.
[0016] Among them: 1. Air cooling cylinder; 2. Connecting pipe; 3. Side air duct; 4. Feed pipe; 5. Bottom air duct. DETAILED DESCRIPTION
[0017] The specific implementation methods of the utility model are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model.
[0018] like Figure 1-4 As shown, the utility model provides a suspended air cooling device for high-temperature powdered materials, including an air cooling cylinder 1, a side air duct 3, a feed pipe 4 and a bottom air duct 5. The top of the air cooling cylinder 1 is provided with a connecting pipe 2 connected to the dust collector, the side air duct 3 is provided with two and is arranged on the side of the air cooling cylinder 1, the feed pipe 4 is provided with two and is symmetrically arranged on the air cooling cylinder 1, and the lower end of the bottom air duct 5 is a trumpet-shaped structure and is arranged at the lower end of the air cooling cylinder 1.
[0019] It should be noted that the two side air ducts 3 are respectively tangent to the sides of the air-cooling cylinder 1, and the two side air ducts 3 are arranged in parallel. The side air inlet adopts a double air inlet mode, and cooperates with the lower air flow to achieve the effect of "cold air carrying hot materials" in the heat exchange unit, which greatly improves the heat exchange efficiency and prevents the material from "sticking to the wall". The double-point material discharge is adopted and arranged with the side wind rotary cutting method, which is beneficial to the dispersion of the material and improves the heat exchange efficiency.
[0020] Specific implementation method and principle: A certain amount of high-temperature powdered material at about 860°C is extracted from the chute of the last-stage cyclone, and transported by means of high-temperature spiral reamer / high-temperature air chute / straight chute, etc. After the high-temperature powdered material enters the air cooling device of the present application through the feed pipe 4, it is quickly mixed and cooled with the lower air of the bottom air duct 5 and the side air of the two side air ducts 3. After the temperature drops to about 170°C, it finally enters the dust collector through the connecting pipe 2 for gas-solid separation, and the gas is discharged into the atmosphere. After cooling, the powdered material enters the temporary storage bin for storage.
[0021] In summary, the present application uses the fluidized bed principle and is designed to be similar to a decomposition furnace structure, and uses air cooling to rapidly cool the high-temperature materials taken from the production line.
[0022] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A suspended air cooling device for high-temperature powdery materials, characterized in that: The invention comprises an air cooling cylinder (1), a side air duct (3), a feed pipe (4) and a bottom air duct (5); a connecting pipe (2) connected to a dust collector is provided at the top of the air cooling cylinder (1); two side air ducts (3) are provided and are arranged on the side of the air cooling cylinder (1); two feed pipes (4) are provided and are symmetrically arranged on the air cooling cylinder (1); and the bottom air duct (5) is provided at the lower end of the air cooling cylinder (1).
2. The suspended air cooling device for high-temperature powdery materials according to claim 1 is characterized in that: The two side air ducts (3) are respectively tangent to the side surfaces of the air cooling cylinder (1).
3. The suspended air cooling device for high-temperature powdery materials according to claim 1 is characterized in that: The two side air ducts (3) are arranged in parallel.
4. The suspended air cooling device for high-temperature powdery materials according to claim 1 is characterized in that: The lower end of the bottom air duct (5) is a trumpet-shaped structure.