Novel purification liquid sprayer for making acid from flue gas
The spray structure and automatic control system of the new flue gas acid purification sprayer have solved the problems of equipment blockage and burnout during the copper smelting flue gas purification process, achieving rapid cleaning and cooling of the equipment, and improving the durability and ease of use of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUADING COPPER DEV
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-15
AI Technical Summary
During the purification of copper smelting flue gas, impurities such as mineral dust adhere to the inner wall of the equipment, causing blockages and burnouts, affecting the continuity of production. Furthermore, the reaction between high-temperature flue gas and washing liquid produces small droplets that are difficult to remove, leading to equipment damage and production stoppages.
A new type of flue gas acid purification sprayer is adopted, including a conical spray structure and an automatic valve system. The inner wall of the equipment is cleaned by spray flushing pipes, and water vapor is collected by condensation mesh plate to achieve cooling of flue gas and removal of dirt.
It effectively cleans the sticky substances on the inner wall of the equipment, prevents the equipment from burning out, extends its service life, improves production continuity, and reduces dirt accumulation through cooling and cleaning, thereby improving the durability and convenience of the equipment.
Smart Images
Figure CN224246785U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of non-ferrous metal smelting technology, specifically, it relates to a novel flue gas acid production and purification sprayer. Background Technology
[0002] There is a copper smelting unit with an annual production capacity of 200 kt / a. The waste gas from copper smelting is purified and used to produce sulfuric acid. Frequent shutdowns are caused by overflow protection water interruption in the primary power wave high-efficiency scrubber of the main purification equipment, which burns the scrubber wall. Sometimes, production also stops due to excessively thick layers of mineral dust and other particulate matter adhering to the scrubber's reverse nozzle, reducing the flue gas flow and resulting in a decrease in the amount of sulfuric acid processed. A single shutdown results in direct and indirect losses totaling tens of millions of yuan. The reasons for this are as follows: the flue gas input for purification in copper smelting reaches 152,000 Nm3 / h, and the SO3 introduced combines with the washing liquid to form dilute sulfuric acid, which corrodes the equipment; the flue gas contains mineral dust, arsenic and other compounds that stick and wear the equipment; the 250°C high temperature brought by the flue gas collides with the washing liquid, causing the washing liquid to absorb heat and boil, and the flue gas disperses the washing liquid into small droplets that move with the flue gas in the reverse spray pipe of the scrubber, filling all corners of the scrubber; some mineral dust impurities enter the overflow tank and block and adhere to the overflow tank, preventing the overflow liquid from overflowing, so no water curtain is generated on the wall of the vessel, and the high temperature flue gas burns out the reverse spray pipe.
[0003] Problems arise when process conditions change. For example, copper ore powder contains trace amounts of arsenic. After the arsenic burns at high temperatures, it enters the purification scrubber along with the ore dust. The scrubbing liquid reacts with the flue gas, collecting ore dust, arsenic, and other particulate matter. Arsenic-containing ore dust is highly adhesive and easily adheres to the scrubber walls. These ore dust and other impurities enter the overflow tank and stick to the bottom and walls, making it impossible to remove the ore dust using circulating liquid. The small droplets of ore dust produced by the collision and reaction of the scrubbing liquid with the high-temperature flue gas also stick to the walls of the reverse spray pipe. The overflow liquid forms an uneven water curtain protection wall, and the water curtain can only flow downwards without impact force, making it unable to remove this type of scale. As the mixture of ore dust and other impurities accumulates, the cross-sectional area of the scrubber's reverse spray pipe decreases, making production impossible and ultimately requiring shutdown for maintenance.
[0004] In view of this, this utility model is hereby proposed. Utility Model Content
[0005] To solve the aforementioned technical problem of mineral dust sticking at the flue gas inlet, the basic concept of the technical solution adopted by this utility model is as follows:
[0006] A novel flue gas acid purification sprayer includes:
[0007] Purification sprayer, the purification sprayer is conical in shape;
[0008] The spray structure includes a first spray section and a second spray section. The first spray section includes an annular inlet pipe fixedly installed on the outer wall of the purification sprayer. Eighteen sets of holes are opened on the outer wall of the annular inlet pipe. A first delivery pipe is fixedly installed in the holes. A spray flushing pipe is fixedly installed at one end of the first delivery pipe, for a total of eighteen sets of spray flushing pipes. A second limiting sleeve is fixedly installed on the outer wall of the first delivery pipe. A spray self-control valve is fixedly installed on the top of the second limiting sleeve. The second spray section includes a first fixing plate disposed outside the purification sprayer. Three sets of first limiting plates are fixedly installed on the outer wall of the first fixing plate. One side of the outer wall of the first limiting plate is fixedly connected to the outer wall of the annular inlet pipe.
[0009] In a preferred embodiment of the present invention, the second spray unit further includes a first limiting sleeve fixedly installed on the outer wall of the annular liquid inlet pipe. The outer wall of the first limiting sleeve has a hole, and the liquid inlet pipe is fixedly installed in the hole. The outer wall of the liquid inlet pipe is provided with a liquid inlet volume self-control main valve. A second limiting plate is fixedly installed between the first limiting sleeve and the first fixing plate.
[0010] In a preferred embodiment of this utility model, the top of the purification sprayer is fixedly installed with an upper flange for connecting the flue gas pipe, the bottom of the purification sprayer is fixedly installed with a lower flange for connecting the flue gas pipe, eighteen sets of limiting holes are opened on the outer wall of the annular liquid inlet pipe, the first liquid delivery pipe is fixedly installed inside the limiting holes, and the annular liquid inlet pipe is connected to the spray flushing pipe through the first liquid delivery pipe.
[0011] In a preferred embodiment of this utility model, a first annular partition is fixedly installed on the inner wall of the purification sprayer, a first conical partition is fixedly installed on the top of the first annular partition, a hole is opened on the outer wall of the purification sprayer, a second output pipe is fixedly installed in the hole, a connecting plate is fixedly installed at the bottom of the second limiting plate, an output pump box is fixedly installed at the bottom of the connecting plate, one end of the second output pipe is fixedly installed inside the output pump box, and a third output pipe is fixedly installed on one side of the outer wall of the output pump box.
[0012] In a preferred embodiment of this utility model, a second annular partition is fixedly installed on the inner wall of the purification sprayer, and a second conical partition is fixedly installed inside the second annular partition. The top of the second conical partition has an opening, and a first output pipe is fixedly installed inside the opening. The bottom of the second conical partition has two sets of holes, and a condensation mesh plate is installed inside the holes. The second annular partition is located above the first annular partition, and one end of the condensation mesh plate is in close contact with the top of the first annular partition.
[0013] In a preferred embodiment of this utility model, the injection self-control valve is connected to a computer for system control, and the number of valves opened on the computer is determined according to requirements during operation.
[0014] In a preferred embodiment of this utility model, the included angle of the jet water line of the jet flushing pipe is 34°.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] 1. To achieve the purpose of conveying and spraying the liquid, when the overflow tank is blocked, the spraying washing liquid flushes and cleans the wall of the reverse spray pipe, ensuring that the inner wall of the reverse spray pipe of the scrubber will not be burned. When shutting down for maintenance, the sticky material on the inner wall of the reverse pipe can be quickly cleaned, which can save time and effort, promote the completion of emergency repair tasks, and cool the flue gas, extend the service life of the device, and improve the durability of the device.
[0017] 2. To achieve the condensation and discharge of water vapor in flue gas, to provide auxiliary cooling inside the device, to condense water vapor into water for discharge, and to improve the ease of use of the device.
[0018] 3. To achieve the purpose of thoroughly rinsing the outer wall of the overflow tank, reducing the accumulation of dirt, and optimizing the user experience of the device.
[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0020] In the attached diagram:
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a front view of the present invention;
[0023] Figure 3 This is a top view of the present invention;
[0024] Figure 4 This is a top view of the purification sprayer of this utility model;
[0025] Figure 5 This is a schematic diagram of the second annular partition structure of this utility model;
[0026] Figure 6 This is a schematic diagram of the output pump box structure of this utility model;
[0027] Figure 7 This is a schematic diagram of the first annular partition structure of this utility model;
[0028] Figure 8 This is a schematic diagram of the first infusion tube structure of this utility model.
[0029] In the diagram: 10. Purification sprayer; 11. Upper flange connecting to flue gas pipe; 12. Lower flange connecting to flue gas pipe; 13. First fixing plate; 14. Annular inlet pipe; 15. First limiting plate; 16. Connecting plate; 17. First limiting sleeve; 18. Second limiting plate; 19. Inlet pipe; 20. Automatic control valve for inlet volume; 21. Limiting hole; 22. First delivery pipe; 23. Spray flushing pipe; 24. Second limiting sleeve; 25. Spray automatic control valve; 26. First annular baffle; 27. First conical baffle; 28. Second annular baffle; 29. Second conical baffle; 30. Condensation mesh plate; 31. First output pipe; 32. Second output pipe; 33. Output pump box; 34. Third output pipe. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0031] Example 1: A novel flue gas acid-generating and purifying sprayer, specifically as follows: Figure 1 , Figure 2 , Figure 4 and Figure 8 As shown, the device includes a purification sprayer 10, which is conical in shape; a spray structure, which includes a first spray section and a second spray section. The first spray section includes an annular inlet pipe 14 fixedly installed on the outer wall of the purification sprayer 10. Eighteen sets of holes are opened on the outer wall of the annular inlet pipe 14. A first delivery pipe 22 is fixedly installed in the holes. A spray flushing pipe 23 is fixedly installed at one end of the first delivery pipe 22. There are a total of eighteen sets of spray flushing pipes 23. A second limiting sleeve 24 is fixedly installed on the outer wall of the first delivery pipe 22. A spray self-control valve 25 is fixedly installed on the top of the second limiting sleeve 24. The second spray section includes a first fixing plate 13 disposed outside the purification sprayer 10. Three sets of first limiting plates 15 are fixedly installed on the outer wall of the first fixing plate 13. One side of the outer wall of the first limiting plate 15 is fixedly connected to the outer wall of the annular inlet pipe 14. The overflow tank outer wall is flushed by a spray structure. The annular inlet pipe 14 is fixed by the first fixing plate 13 and the first limiting plate 15. The inlet volume self-control main valve 20 is opened. The spray liquid delivered by the pump enters the annular inlet pipe 14 through the inlet pipe 19 from the inlet volume self-control main valve 20. The spray liquid is delivered to the spray flushing pipe 23 through the first delivery pipe 22. The overflow tank outer wall is flushed through the eighteen sets of spray flushing pipes 23.
[0032] Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 8As shown, the second spray unit also includes a first limiting sleeve 17 fixedly installed on the outer wall of the annular inlet pipe 14. The outer wall of the first limiting sleeve 17 has a hole, and an inlet pipe 19 is fixedly installed inside the hole. An automatic inlet flow control valve 20 is provided on the outer wall of the inlet pipe 19. A second limiting plate 18 is fixedly installed between the first limiting sleeve 17 and the first fixing plate 13. The annular inlet pipe 14 is further fixed by the first limiting sleeve 17 and the second limiting plate 18.
[0033] Based on the above, the structure of the purification sprayer 10, the first fixed plate 13, the annular inlet pipe 14, the first limiting plate 15, the first limiting sleeve 17, the second limiting plate 18, the inlet pipe 19, the inlet volume self-control main valve 20, the first delivery pipe 22, the spray flushing pipe 23, the second limiting sleeve 24, and the spray self-control valve 25 achieves the purpose of conveying and spraying the sprayed liquid. When the overflow tank is blocked, the sprayed washing liquid flushes and cleans the back spray pipe wall, ensuring that the inner wall of the back spray pipe of the scrubber will not be burned. When shutting down for maintenance, the sticky material on the inner wall of the back spray pipe can be quickly cleaned, which can save time and effort, promote the completion of emergency repair tasks, and cool the flue gas, extend the service life of the device, and improve the durability of the device.
[0034] Example 2: Based on Example 1, specifically as follows... Figure 1 , Figure 2 and Figure 3 As shown, the top of the purification sprayer 10 is fixedly equipped with an upper flange 11 for connecting to the flue gas pipe, and the bottom of the purification sprayer 10 is fixedly equipped with a lower flange 12 for connecting to the flue gas pipe. Eighteen sets of limiting holes 21 are opened on the outer wall of the annular inlet pipe 14. The first delivery pipe 22 is fixedly installed inside the limiting holes 21. The annular inlet pipe 14 communicates with the jet flushing pipe 23 through the first delivery pipe 22. The purification sprayer 10 is installed and fixed by the upper flange 11 and the lower flange 12 for connecting to the flue gas pipe, and the first delivery pipe 22 is limited and fixed by the limiting holes 21.
[0035] Specifically, such as Figure 4 , Figure 6 and Figure 7 As shown, a first annular baffle 26 is fixedly installed on the inner wall of the purification sprayer 10, and a first conical baffle 27 is fixedly installed on the top of the first annular baffle 26. A hole is formed on the outer wall of the purification sprayer 10, and a second output pipe 32 is fixedly installed inside the hole. A connecting plate 16 is fixedly installed at the bottom of the second limiting plate 18, and an output pump box 33 is fixedly installed at the bottom of the connecting plate 16. One end of the second output pipe 32 is fixedly installed inside the output pump box 33, and a third output pipe 34 is fixedly installed on one side of the outer wall of the output pump box 33. The output pump box 33 is further secured by the connecting plate 16.
[0036] Specifically, such as Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, a second annular baffle 28 is fixedly installed on the inner wall of the purification sprayer 10. A second conical baffle 29 is fixedly installed inside the second annular baffle 28. An opening is provided at the top of the second conical baffle 29, and a first output pipe 31 is fixedly installed inside the opening. Two sets of holes are provided at the bottom of the second conical baffle 29, and condensation mesh plates 30 are installed inside the holes. The second annular baffle 28 is positioned above the first annular baffle 26, and one end of the condensation mesh plate 30 is in close contact with the top of the first annular baffle 26. After the flue gas is washed, some water vapor will condense on the first output pipe 31. The condensate is guided through the second annular baffle 28 and the second conical baffle 29 and through the condensation mesh plate 30 to the top of the first annular baffle 26. The condensate is then output through the first output pipe 32, the output pump box 33, and the third output pipe 34.
[0037] Based on the above, the structure of the purification sprayer 10, the upper flange 11 connecting to the flue gas pipe, the lower flange 12 connecting to the flue gas pipe, the first fixing plate 13, the limiting hole 21, the first liquid delivery pipe 22, the first annular baffle 26, the first conical baffle 27, the second annular baffle 28, the second conical baffle 29, the condensation mesh plate 30, the first output pipe 31, the second output pipe 32, the output pump box 33, and the third output pipe 34 achieves the condensation and discharge of water vapor in the flue gas, provides auxiliary cooling inside the device, condenses the water vapor into water for discharge, and improves the ease of use of the device.
[0038] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 8 As shown, the injection control valve 25 is connected to a computer for system control. During operation, the computer opens the required number of valves as needed. This facilitates rapid control of the injection control valve 25.
[0039] Specifically, such as Figure 8 As shown, the spray angle of the water jet in the jet flushing pipe 23 is 34°. The sprayed liquid can be aimed at the outer wall of the overflow tank, and a single flushing session of 3-5 minutes can complete the removal of sticky mineral dust. The total spray volume of the jet flushing pipe 23 is approximately 410 m³ / h, the pump outlet pressure is 0.5 MPa, and the temperature is 60-65℃. The high-efficiency scrubber (reverse spray pipe) operates with 8 sets of sprayers during normal operation, and is fully open during shutdown flushing and emergency response. All spraying liquid is 3%-5% dilute sulfuric acid, which is highly corrosive. The sprayed liquid has a pressure of 0.6 kPa inside the pipe. For safety reasons, all pipeline valves are made of SMO254, and the baffle material added to the shell and liquid flow tank is the same as that of the spray pipe. This ensures that the sprayed liquid thoroughly flushes the outer wall of the overflow tank.
[0040] In summary, the structure of the jet flushing pipe 23 and the jet self-control valve 25 achieves the purpose of thoroughly flushing the outer wall of the overflow tank, reducing the accumulation of dirt, and optimizing the user experience of the device.
[0041] Working principle: Upon opening the main inlet flow control valve 20, the pumped liquid enters the annular inlet pipe 14 via the inlet pipe 19, and is then transported to the jet flushing pipe 23 via the first delivery pipe 22. Eighteen sets of jet flushing pipes 23 (jet water line angle 34°) flush the outer wall of the overflow tank. Each flushing session lasts 3-5 minutes and removes sticky mineral dust. The total spray volume is approximately 410 m³ / h. The pump outlet pressure is 0.5 MPa, and the temperature is 60-65℃. The jet liquid is a 3%-5% dilute sulfuric acid solution. The pipeline valves are made of SMO254. The shell and the liquid flow tank have additional baffles made of the same material as the jet pipes. The annular inlet pipe 14 is fixed by the first fixing plate 13 and the first limiting plate 15. The first limiting sleeve 17 and the second... The limiting plate 18 assists in fixing the annular inlet pipe 14. The purification sprayer 10 is installed and fixed through the upper flange 11 and lower flange 12 of the connecting flue gas pipe. The first delivery pipe 22 is limited and fixed through the limiting hole 21. The output pump box 33 is assisted in fixing through the connecting plate 16. After flue gas flushing, some water vapor condenses on the first output pipe 31. Through the second annular baffle 28 and the second conical baffle 29, the condensate is guided through the condensation mesh plate 30 to the top of the first annular baffle 26, and then output through the first output pipe 31, the output pump box 33 and the third output pipe 34. The spray self-control valve 25 is connected to the computer for system control. During operation, the number of valves opened is determined by the computer according to the requirements, which facilitates rapid control. The high-efficiency scrubber opens 8 groups during normal operation, fully opens during shutdown flushing, and fully opens in case of emergency.
[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A novel flue gas acid-generating and purifying sprayer, characterized in that, include: Purification sprayer (10), the purification sprayer (10) is conical; The spray structure includes a first spray section and a second spray section. The first spray section includes an annular inlet pipe (14) fixedly installed on the outer wall of the purification sprayer (10). Eighteen sets of holes are opened on the outer wall of the annular inlet pipe (14). A first delivery pipe (22) is fixedly installed in the hole. A jet flushing pipe (23) is fixedly installed at one end of the first delivery pipe (22). There are a total of eighteen sets of jet flushing pipes (23). A second limiting sleeve (24) is fixedly installed on the outer wall of the first delivery pipe (22). A jet self-control valve (25) is fixedly installed on the top of the second limiting sleeve (24). The second spray section includes a first fixing plate (13) set outside the purification sprayer (10). Three sets of first limiting plates (15) are fixedly installed on the outer wall of the first fixing plate (13). One side of the outer wall of the first limiting plate (15) is fixedly connected to the outer wall of the annular inlet pipe (14).
2. The novel flue gas acidification and purification sprayer according to claim 1, characterized in that, The second spray section also includes a first limiting sleeve (17) fixedly installed on the outer wall of the annular liquid inlet pipe (14). The outer wall of the first limiting sleeve (17) is provided with a hole, and the liquid inlet pipe (19) is fixedly installed in the hole. The outer wall of the liquid inlet pipe (19) is provided with a liquid inlet volume self-control main valve (20). A second limiting plate (18) is fixedly installed between the first limiting sleeve (17) and the first fixing plate (13).
3. The novel flue gas acid-purifying sprayer according to claim 1, characterized in that, The top of the purification sprayer (10) is fixedly installed with a flange (11) for connecting the flue gas pipe, and the bottom of the purification sprayer (10) is fixedly installed with a flange (12) for connecting the flue gas pipe. Eighteen sets of limiting holes (21) are opened on the outer wall of the annular inlet pipe (14). The first delivery pipe (22) is fixedly installed inside the limiting hole (21). The annular inlet pipe (14) is connected to the spray flushing pipe (23) through the first delivery pipe (22).
4. The novel flue gas acidification and purification sprayer according to claim 1, characterized in that, A first annular partition (26) is fixedly installed on the inner wall of the purification sprayer (10), and a first conical partition (27) is fixedly installed on the top of the first annular partition (26). A hole is opened on the outer wall of the purification sprayer (10), and a second output pipe (32) is fixedly installed in the hole. A connecting plate (16) is fixedly installed at the bottom of the second limiting plate (18), and an output pump box (33) is fixedly installed at the bottom of the connecting plate (16). One end of the second output pipe (32) is fixedly installed inside the output pump box (33), and a third output pipe (34) is fixedly installed on one side of the outer wall of the output pump box (33).
5. The novel flue gas acidification and purification sprayer according to claim 1, characterized in that, The inner wall of the purification sprayer (10) is fixedly installed with a second annular partition (28), and a second conical partition (29) is fixedly installed inside the second annular partition (28). The top of the second conical partition (29) is provided with an opening, and a first output pipe (31) is fixedly installed inside the opening. The bottom of the second conical partition (29) is provided with two sets of holes, and a condensation mesh plate (30) is provided inside the holes. The second annular partition (28) is located above the first annular partition (26), and one end of the condensation mesh plate (30) is in close contact with the top of the first annular partition (26).
6. The novel flue gas acid-generating and purifying sprayer according to claim 1, characterized in that, The injection self-control valve (25) is connected to a computer for system control, and the number of valves opened on the computer according to the requirements during operation.
7. The novel flue gas acid-purifying sprayer according to claim 1, characterized in that, The included angle of the water jet from the jet flushing pipe (23) is 34°.