Alloy cast iron production waste gas emission purification device

Abstract

This utility model discloses a waste gas emission purification device for alloy cast iron production, relating to the field of waste gas purification technology. It includes a housing with multiple water-cooling devices inside. Each water-cooling device comprises multiple water-cooling plates fixedly connected to the housing, an inlet pipe fixedly connected to the sides of the multiple water-cooling plates, and an outlet pipe fixedly connected to the sides of the multiple water-cooling plates. By setting multiple sets of water-cooling devices, the high-temperature waste gas generated during alloy cast iron production is cooled while preventing the generation of water vapor. The multiple sets of water-cooling devices are staggered inside the housing, causing the velocity of the high-temperature waste gas to gradually decrease as it passes through them. This allows heavier particles in the high-temperature waste gas to fall into a collection tank, achieving both cooling and removal of heavier particles from the high-temperature waste gas.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, and in particular to a waste gas emission purification device for alloy cast iron production. Background Technology

[0002] The waste gas generated during the production of alloy cast iron is characterized by high temperature, high dust, and multiple pollutants. Specifically, the waste gas temperature can reach 500-800℃, and it contains a large amount of metal oxide dust, sulfides, nitrogen oxides, carbon monoxide, and volatile heavy metals. The waste gas emission purification device for alloy cast iron production is an environmental protection device used to treat the high-temperature, dusty, sulfur-containing, and heavy metal-containing harmful waste gas generated during the smelting process. After the waste gas is captured by the gas collection hood, it is treated by multiple purification units such as cooling, dust removal, desulfurization, and denitrification. Finally, it achieves efficient removal of pollutants such as particulate matter, sulfur dioxide, nitrogen oxides, and heavy metals, ensuring that emissions meet standards.

[0003] Because the waste gas generated during the production of alloy cast iron is at a high temperature, it needs to be cooled down first. Existing equipment generally sprays water into the waste gas to cool it down. The water absorbs heat and evaporates after direct contact with the waste gas, thereby lowering the temperature of the waste gas. However, this results in the waste gas containing a large amount of water vapor, which affects the subsequent waste gas purification process. Therefore, a waste gas emission purification device for alloy cast iron production is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where existing equipment typically cools waste gas by spraying water into the waste gas, allowing the water to absorb heat and evaporate upon direct contact with the waste gas, thereby lowering the temperature. However, this results in a large amount of water vapor in the waste gas, which in turn affects the subsequent waste gas purification process. Therefore, this invention proposes a waste gas emission purification device for alloy cast iron production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A waste gas emission purification device for alloy cast iron production includes a housing. Inside the housing are multiple water-cooling devices, each including multiple water-cooling plates fixedly connected to the housing, an inlet pipe fixedly connected to the sides of the water-cooling plates, and an outlet pipe fixedly connected to the sides of the water-cooling plates. A first pipe is fixedly connected to the sides of the inlet pipes, and a second pipe is fixedly connected to the sides of the outlet pipes. An air inlet pipe is fixedly connected to the side of the housing, and an air outlet pipe is fixedly connected to the side of the housing. A grid plate is fixedly connected inside the housing. A collection trough is fixedly connected to the lower part of the housing, and a movable plate is rotatably connected to the side of the collection trough.

[0006] The above technical solution further includes: A waste gas purification device is installed on the side of the exhaust pipe. The high-temperature waste gas is cooled down and then treated by the waste gas purification device.

[0007] A liquid pump is installed on the outside of the first pipe, and a liquid pump is installed on the outside of the second pipe. A water-cooling circulation device is installed on the sides of the first and second pipes. The first liquid pump draws out cold water from the water-cooling circulation device, and the second liquid pump draws hot water into the water-cooling circulation device.

[0008] Each of the aforementioned water-cooled plates has a water-cooling tank inside for water circulation. After cold water flows into the water-cooling tank, it can absorb the heat of the high-temperature exhaust gas through the water-cooled plate.

[0009] Pipe 1 is connected to multiple inlet pipes, and pipe 2 is connected to multiple outlet pipes. The water-cooling tanks opened in the multiple water-cooling plates are all connected to the inlet pipes and the water-cooling tanks opened in the multiple water-cooling plates are all connected to the outlet pipes. Cold water can enter the inlet pipe through pipe 1, and hot water can enter the pipe 2 through the outlet pipe. Cold water flows into the water-cooling tank through the inlet pipe and absorbs heat to become hot water as it flows from the water-cooling tank to the outlet pipe.

[0010] Multiple water-cooled cooling devices are arranged interlaced inside the outer shell. The water-cooling plate is inclined. The interlaced arrangement of the water-cooled cooling devices inside the outer shell and the inclined shape of the water-cooling plate can slow down the speed of the high-temperature exhaust gas, thereby causing the heavier particles in the high-temperature exhaust gas to gradually fall.

[0011] Multiple inlet pipes and two outlet pipes are fixedly connected to the outer casing, and the bottom of the grating plate is fixedly connected to the two outlet pipes, thus fixing the inlet and outlet pipes.

[0012] This utility model has the following beneficial effects: In this invention, by setting up multiple sets of water-cooling devices, the high-temperature waste gas generated during the production of alloy cast iron can be cooled down while avoiding the generation of water vapor.

[0013] In this invention, multiple sets of water-cooling devices are installed alternately inside the outer shell, so that the speed of the high-temperature exhaust gas gradually decreases as it passes through the multiple sets of water-cooling devices, causing the heavier particles in the high-temperature exhaust gas to fall into the collection tank, thereby achieving the removal of heavier particles in the high-temperature exhaust gas while cooling it. Attached Figure Description

[0014] Figure 1 This is a top view schematic diagram of the overall structure of the waste gas emission purification device for alloy cast iron production proposed in this utility model. Figure 2 This is a side view of the overall structure of the waste gas purification device for alloy cast iron production proposed in this utility model. Figure 3 This is a partial cross-sectional structural schematic diagram of the waste gas emission purification device for alloy cast iron production proposed in this utility model. Figure 4 This is a top view of the water-cooled cooling device structure of the waste gas purification device for alloy cast iron production proposed in this utility model. Figure 5 This is a side view of the water-cooled cooling device structure of the waste gas emission purification device for alloy cast iron production proposed in this utility model. Figure 6 This is a partial cross-sectional structural diagram of the water-cooled cooling device of the waste gas emission purification device for alloy cast iron production proposed in this utility model. Figure 7 This is a half-sectional view of the water-cooled plate structure of the waste gas emission purification device for alloy cast iron production proposed in this utility model.

[0015] In the diagram: 1. Outer shell; 2. Water-cooled cooling device; 3. Air inlet pipe; 4. Air outlet pipe; 5. Grille plate; 6. Collection tank; 7. Movable plate; 8. Water-cooled plate; 9. Water inlet pipe; 10. Water-cooled tank; 11. Pipe 1; 12. Pipe 2; 13. Waste gas purification device; 14. Liquid pump 1; 15. Liquid pump 2; 16. Water-cooled circulation device; 17. Water outlet pipe. Detailed Implementation

[0016] 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.

[0017] like Figure 1 - Figure 7 As shown, the exhaust gas purification device for alloy cast iron production proposed in this utility model includes a shell 1. Multiple water-cooling devices 2 are installed inside the shell 1. Each water-cooling device 2 includes multiple water-cooling plates 8 fixedly connected to the shell 1, water inlet pipes 9 and water outlet pipes 17 fixedly connected to the sides of the multiple water-cooling plates 8, pipe 11 fixedly connected to the sides of the multiple water inlet pipes 9, and pipe 12 fixedly connected to the sides of the multiple water outlet pipes 17. An air inlet pipe 3 and an air outlet pipe 4 are fixedly connected to the sides of the shell 1. A grid plate 5 is fixedly connected inside the shell 1. A collection trough 6 is fixedly connected to the lower part of the shell 1, and a movable plate 7 is rotatably connected to the side of the collection trough 6.

[0018] An exhaust gas purification device 13 is installed on the side of the exhaust pipe 4.

[0019] A liquid pump 14 is installed on the outside of pipe 11, and a liquid pump 25 is installed on the outside of pipe 212. A water cooling circulation device 16 is installed on the side of both pipe 11 and pipe 212.

[0020] Each of the multiple water-cooled plates 8 has a water-cooled tank 10 for water circulation inside.

[0021] Pipe 11 is connected to multiple inlet pipes 9, pipe 212 is connected to multiple outlet pipes 17, and the water-cooling tanks 10 opened in the multiple water-cooling plates 8 are all connected to the inlet pipes 9 and the water-cooling tanks 10 opened in the multiple water-cooling plates 8 are all connected to the outlet pipes 17.

[0022] Multiple water-cooled cooling devices 2 are arranged interlaced inside the outer casing 1, and the water-cooled plate 8 is inclined.

[0023] Multiple inlet pipes 9 and two outlet pipes 17 are fixedly connected to the outer casing 1, and the bottom of the grating plate 5 is fixedly connected to the two outlet pipes 17.

[0024] In this embodiment, when purifying the waste gas generated during the alloy cast iron production process, the collected high-temperature waste gas enters the interior of the outer casing 1 through the inlet pipe 3, and is cooled by multiple water-cooling devices 2 inside the outer casing 1. While the high-temperature waste gas is being cooled by the multiple water-cooling devices 2 inside the outer casing 1, the liquid pump 14 draws cold water from the water-cooling circulation device 16 into multiple water inlet pipes 9 through the pipe 11. Since each water inlet pipe 9 is connected to the water-cooling grooves 10 opened in the multiple water-cooling plates 8, and each water outlet pipe 17 is connected to the water-cooling grooves 10 opened in the multiple water-cooling plates 8, the cold water first enters the interior of the water-cooling grooves 10 opened in the multiple water-cooling plates 8 through the inlet pipe 9. During the process of the cold water in the multiple water-cooling plates 8 flowing from the water-cooling grooves 10 to the water outlet pipe 17, the cold water absorbs the heat of the high-temperature waste gas through the water-cooling plates 8 and becomes hot water. The hot water then flows through the water outlet pipe 17 to the pipe 12. Then, the hot water in the multiple outlet pipes 17 is pumped into the water-cooled circulation device 16 by the liquid pump 2 15 through the pipe 2 12. The hot water is then cooled into cold water by the water-cooled circulation device 16, and then the cold water is pumped into the multiple inlet pipes 9 by the liquid pump 1 14. The water circulates inside the multiple water-cooled cooling devices 2, which reduces the temperature of the high-temperature exhaust gas. At the same time, since each water-cooled cooling device 2 is staggered inside the outer shell 1, the speed of the high-temperature exhaust gas will decrease when it passes through the multiple water-cooled cooling devices 2. At this time, the heavier particles in the high-temperature exhaust gas will be affected by gravity and gradually fall. The heavier particles first pass through the grid plate 5 and then fall into the collection tank 6. When too many heavy particles accumulate in the collection tank 6, the handle of the movable plate 7 can be held and the movable plate 7 can be rotated to open the collection tank 6. At this time, the heavy particles accumulated in the collection tank 6 can be processed.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas emission purification device for alloy cast iron production, comprising a shell (1), characterized in that, The shell (1) is provided with multiple water-cooled cooling devices (2). The water-cooled cooling devices (2) include multiple water-cooled plates (8) fixedly connected to the shell (1), water inlet pipes (9) fixedly connected to the sides of the multiple water-cooled plates (8), and water outlet pipes (17) fixedly connected to the sides of the multiple water-cooled plates (8). Pipeline 1 (11) is fixedly connected to the sides of the multiple water inlet pipes (9), and pipeline 2 (12) is fixedly connected to the sides of the multiple water outlet pipes (17). Air inlet pipe (3) is fixedly connected to the side of the shell (1), and air outlet pipe (4) is fixedly connected to the side of the shell (1). A grid plate (5) is fixedly connected to the inside of the shell (1). A collection trough (6) is fixedly connected to the lower part of the shell (1), and a movable plate (7) is rotatably connected to the side of the collection trough (6).

2. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, The exhaust pipe (4) is provided with an exhaust gas purification device (13) on its side.

3. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, A liquid pump 1 (14) is provided on the outside of the first pipe (11), a liquid pump 2 (15) is provided on the outside of the second pipe (12), and a water cooling circulation device (16) is provided on the sides of the first pipe (11) and the second pipe (12).

4. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, Each of the multiple water-cooled plates (8) has a water-cooled tank (10) for water circulation inside.

5. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, The first pipe (11) is connected to multiple inlet pipes (9), the second pipe (12) is connected to multiple outlet pipes (17), the multiple water-cooling tanks (10) opened in the multiple water-cooling plates (8) are all connected to the inlet pipes (9), and the multiple water-cooling tanks (10) opened in the multiple water-cooling plates (8) are all connected to the outlet pipes (17).

6. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, Multiple water-cooled cooling devices (2) are arranged interlaced inside the outer shell (1), and the water-cooled plate (8) is inclined.

7. The waste gas emission purification device for alloy cast iron production according to claim 1, characterized in that, Multiple inlet pipes (9) and two outlet pipes (17) are fixedly connected to the outer shell (1), and the bottom of the grating plate (5) is fixedly connected to the two outlet pipes (17).

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