Short kiln tail gas cooling and settling device
Patent Information
- Application Number
- CN202522400118.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-12
AI Technical Summary
[0003]为了弥补以上不足，本实用新型提供了一种短窑尾气降温沉降装置，旨在解决现有技术中，短窑尾气沉降器降温和降尘效果差的问题，并且能对污水进行处理
通过两个串联的第一沉降室和第二沉降室，能有效的将短窑尾气中的烟尘进行沉降，并且在第一沉降室和第二沉降室顶部集成一个降温区间，配合不锈钢管使用，能对尾气进行高效降温的同时，防止管道锈蚀，并且第一水冷区、第二水冷区水深为1m，储水量大，降温效果明显；
Smart Images
Figure CN224872889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lead smelting technology, and in particular to a short kiln tail gas cooling and settling device. Background Technology
[0002] Short kilns are used for smelting in the lead recycling process. Short kilns typically use natural gas as a heating source. The exhaust gas from short kilns contains various dust particles. During the production process, the exhaust gas needs to be cooled and dusted to meet environmental protection requirements. Currently, settling chambers are often used for settling. However, many settling chambers have unsatisfactory dust reduction and cooling effects, resulting in a still high dust content in the exhaust gas. At the same time, based on the concept of not discharging wastewater into the environment, using the heat in the flue gas to treat wastewater is also an environmentally friendly approach. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a short kiln tail gas cooling and settling device, which aims to solve the problem of poor cooling and dust reduction effect of the short kiln tail gas settling device in the prior art, and can also treat sewage.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a short kiln tail gas cooling and settling device, comprising a first settling chamber and a second settling chamber, characterized in that: the first and second settling chambers are made of welded steel plates, with a cuboid upper part and a conical lower part; the first and second settling chambers are connected by a herringbone pipe; an inlet pipe is provided on the left side of the first settling chamber; a first water-cooling zone is provided on the top left side of the first settling chamber; a second water-cooling zone is provided on the top right side of the first settling chamber; a first partition plate is provided in the middle of the first settling chamber, penetrating the first settling chamber; a third water-cooling zone is provided on the top of the second settling chamber; and an outlet pipe is provided on the top right side of the second settling chamber.
[0005] As a further description of the above technical solution: The lower ends of the smoke inlet pipe, herringbone pipe, and smoke outlet pipe are equipped with stainless steel pipes.
[0006] As a further description of the above technical solution: The dimensions of the first and second water-cooled zones are 1.45m*2m*1m.
[0007] As a further description of the above technical solution: The dimensions of the third water-cooling zone are 2.9m*2m*0.3m.
[0008] As a further description of the above technical solution: Water supply pipes are installed on the upper outer sides of the first and second settling chambers. The water supply pipes are connected to the sewage tank. A water pump is installed near the sewage tank on the water supply pipes. A branch pipe is installed on the upper part of the water supply pipes. The branch pipe can replenish water to the first, second and third water cooling zones at regular intervals and in quantitative quantities.
[0009] This utility model has the following beneficial effects: The first and second settling chambers connected in series can effectively settle the dust in the short kiln tail gas. A cooling zone is integrated at the top of the first and second settling chambers. When used with stainless steel pipes, it can efficiently cool the tail gas while preventing pipe corrosion. The first and second water cooling zones have a water depth of 1m, a large water storage capacity, and a significant cooling effect. 2. This utility model uses the heat from the exhaust gas of a short kiln to heat and evaporate the wastewater, thereby concentrating the sodium sulfate in the wastewater. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0011] 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.
[0012] Reference Figure 1 This utility model provides an embodiment of a short kiln tail gas cooling and settling device, comprising a first settling chamber 5 and a second settling chamber 6. The first and second settling chambers 5 and 6 are constructed by welding steel plates, with an upper rectangular structure and a lower conical shape. The first and second settling chambers 5 and 6 are connected by a herringbone pipe 12. A flue gas inlet pipe 1 is located on the left side of the first settling chamber 5. A first water-cooling zone 14 is located on the top left side of the first settling chamber 5. A second water-cooling zone 13 is located on the top right side of the first settling chamber 5. A first partition plate 3 is located in the middle of the first settling chamber 5. A partition plate 3 penetrates the first settling chamber 5. A third water-cooling zone 10 is provided at the top of the second settling chamber 6. A smoke outlet pipe 9 is provided on the right side of the top of the second settling chamber 6. Stainless steel pipes 11 are provided at the lower ends of the smoke inlet pipe 1, the herringbone pipe 12, and the smoke outlet pipe 9. The first water-cooling zone 14 and the second water-cooling zone 13 have dimensions of 1.45m*2m*1m, an effective volume of 2.9 cubic meters, and a heat utilization area of 4.71 square meters. The third water-cooling zone 10 has dimensions of 2.9m*2m*0.3m, an effective volume of 4.83 cubic meters, and a heat utilization area of 4.71 square meters.
[0013] A water supply pipe 4 is provided on the upper outer side of the first settling chamber 5 and the second settling chamber 6. The water supply pipe 4 is connected to the sewage tank 8. A water pump 7 is provided near the sewage tank 8 on the water supply pipe 4. A branch pipe 2 is provided on the upper part of the water supply pipe 4. The branch pipe 2 can provide water to the first water cooling zone 14, the second water cooling zone 13 and the third water cooling zone 10 at regular intervals and in quantitative quantities.
[0014] By connecting the first settling chamber 5 and the second settling chamber 6 in series, the temperature of the short kiln tail gas can be effectively reduced from 180℃ to 120℃. The water depth in the first water cooling zone 14 and the second water cooling zone 13 is maintained at 1m, which can effectively absorb the heat in the high-temperature flue gas. The water depth in the third water cooling zone is maintained at about 0.3m. Since the flue gas has been cooled down after entering the second settling chamber 6 from the first settling chamber 5, the temperature has already been reduced. Therefore, the second settling chamber 6 only needs a water depth of 0.3m to meet the requirements. The heat transfer by contact between water and stainless steel pipe 11 has a large contact area and fast heat transfer, which can effectively reduce the temperature of the tail gas and also solve the problem of corrosion caused by long-term immersion of pipes in hot water.
[0015] This application uses the heat in the flue gas to concentrate the wastewater. After analyzing the wastewater in the plant, it was found that the wastewater contains a large amount of sodium sulfate. The wastewater is sent to the first water cooling zone 14 and the second water cooling zone 13 by water pump 7 for evaporation. After evaporation, sodium sulfate will precipitate. After precipitation, the sodium sulfate is removed. Since sodium sulfate has a certain corrosive effect, stainless steel pipe 17 is used as the contact part, which has strong corrosion resistance.
[0016] The entire device employs a simple and effective method that not only effectively settles the soot in the exhaust gas but also effectively reduces the temperature of the exhaust gas, making full use of the heat, and is well-suited for widespread application.
[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A short kiln tail gas cooling and settling device, comprising a first settling chamber (5) and a second settling chamber (6), characterized in that: The first settling chamber (5) and the second settling chamber (6) are made of welded steel plates. The upper part is a cuboid structure and the lower part is conical. The first settling chamber (5) and the second settling chamber (6) are connected by a herringbone pipe (12). The first settling chamber (5) has a smoke inlet pipe (1) on the left side. The first settling chamber (5) has a first water cooling zone (14) on the top left side. The first settling chamber (5) has a second water cooling zone (13) on the top right side. The first settling chamber (5) has a first partition plate (3) in the middle. The first partition plate (3) penetrates the first settling chamber (5). The second settling chamber (6) has a third water cooling zone (10) on the top. The second settling chamber (6) has a smoke outlet pipe (9) on the top right side.
2. The short kiln tail gas cooling and settling device according to claim 1, characterized in that: Stainless steel pipes (11) are provided at the lower ends of the inlet pipe (1), herringbone pipe (12), and outlet pipe (9).
3. The short kiln tail gas cooling and settling device according to claim 1, characterized in that: The first water-cooled zone (14) and the second water-cooled zone (13) have dimensions of 1.45m*2m*1m.
4. The short kiln tail gas cooling and settling device according to claim 1, characterized in that: The third water-cooled zone (10) has dimensions of 2.9m*2m*0.3m.
5. The short kiln tail gas cooling and settling device according to claim 1, characterized in that: Water supply pipes (4) are installed on the upper outer side of the first settling chamber (5) and the second settling chamber (6). The water supply pipes (4) are connected to the sewage tank (8). A water pump (7) is installed near the sewage tank (8) on the water supply pipes (4). A branch pipe (2) is installed on the upper part of the water supply pipes (4). The branch pipe (2) can provide water to the first water cooling zone (14), the second water cooling zone (13) and the third water cooling zone (10) at regular intervals and in quantitative quantities.