A smelting furnace exhaust gas treatment device

Abstract

The utility model relates to a smelting furnace waste gas treatment device, including vertical casing, the upper end intercommunication of vertical casing lateral wall is equipped with horizontal casing, the bottom of vertical casing is installed with bottom cover, the middle position of bottom cover is equipped with air inlet pipe, the inside lower extreme of vertical casing is equipped with heat exchange cavity, be equipped with a plurality of gas passages between the upper and lower surfaces of heat exchange cavity, the cavity of heat exchange cavity is connected with heat exchange medium import and heat exchange medium export, the top of vertical casing is fixed with clean air cylinder, and the piston rod of clean air cylinder is connected with fixed plate, and the bottom of fixed plate is equipped with a plurality of connecting rods, and the end of connecting rod is connected with cleaning disc, and the bottom of horizontal casing is equipped with the discharge port, and the bottom of discharge port is installed with the closing apron, and the inside of horizontal casing is equipped with filter screen, and the lateral wall of horizontal casing is equipped with the exhaust port. The utility model can recover the heat in waste gas, can clean the heat recovery device, guarantee better heat exchange efficiency, can also intercept the dust in waste gas, realizes the treatment of waste gas.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device for smelting furnaces. Background Technology

[0002] The exhaust gas from smelting furnaces contains slag and dust, which, if treated and directly discharged, will have adverse environmental impacts. Furthermore, the exhaust gas from smelting furnaces is highly calorific; failing to recover this heat during treatment would result in significant energy waste. Chinese utility model patent CN222027435U discloses a combustion furnace exhaust gas treatment device that utilizes a medium flowing inside heat exchange tubes for heat exchange, achieving heat recovery. However, over time, dust from the exhaust gas adheres to the outer wall of the heat exchange tubes, reducing heat exchange efficiency and affecting the overall performance. Utility Model Content

[0003] The present invention aims to address the shortcomings of the prior art by providing a smelting furnace exhaust gas treatment device.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: A furnace exhaust gas treatment device includes a vertical shell, a horizontal shell connected to the upper end of the side wall of the vertical shell, a bottom cover installed at the bottom of the vertical shell, an air inlet pipe located in the middle of the bottom cover, a heat exchange chamber located at the lower end of the interior of the vertical shell, a plurality of gas channels between the upper and lower surfaces of the heat exchange chamber, a heat exchange medium inlet and a heat exchange medium outlet connected to the cavity of the heat exchange chamber, a cleaning cylinder fixed at the top of the vertical shell, a fixed plate connected to the piston rod of the cleaning cylinder, a plurality of connecting rods located at the bottom of the fixed plate, a cleaning disc connected to the end of the connecting rod, the cleaning disc corresponding to each gas channel, the diameter of the cleaning disc being the same as the inner diameter of the gas channel, a slag discharge port located at the bottom of the horizontal shell, a sealing cover plate installed at the bottom of the slag discharge port, a filter screen located inside the horizontal shell, the air-facing end face of the filter screen being flush with the rear side of the slag discharge port along the gas flow direction, a rotary motor installed outside the side wall of the horizontal shell, the output shaft of the rotary motor passing through the middle of the filter screen and connected to a scraper, the scraper being fitted against the air-facing end face of the filter screen, and an exhaust port located on the side wall of the horizontal shell.

[0005] A water tank is located at the top of the horizontal shell, and a vertical plate is installed inside the water tank. The vertical plate divides the inner cavity of the water tank into a flow guiding chamber and a water storage chamber. A liquid transfer sponge strip is placed on the vertical plate. One end of the liquid transfer sponge strip passes through the flow guiding chamber, contacts the top of the filter screen at the top of the horizontal shell, and the other end extends into the bottom of the water storage chamber.

[0006] The water tank is equipped with a lid on top, and a handle is attached to the lid.

[0007] A transparent observation window is provided on the side wall of the water storage chamber.

[0008] Each gas channel has several annular baffles on its outer wall, and the annular baffles of different gas channels are arranged alternately.

[0009] A diffuser plate is provided on the inner wall of the bottom cover above the air intake pipe, and the diffuser plate is fixed to the bottom cover by a connecting rod.

[0010] The bottom cover is detachably mounted on the bottom of the vertical housing using bolts.

[0011] The sealing cover is detachably installed at the bottom of the slag discharge port by bolts.

[0012] The beneficial effects of this utility model are: it can recover heat from waste gas, clean the heat recovery device, ensure better heat exchange efficiency, complete energy recovery and utilization, and also intercept dust in waste gas, thus realizing the treatment of waste gas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the water tank structure in this utility model; Figure 3 This is a diagram showing the distribution of gas channels inside the heat exchange cavity in this invention. In the diagram: 1-Vertical shell; 2-Horizontal shell; 3-Bottom cover; 4-Inlet pipe; 5-Heat exchange chamber; 6-Gas passage; 7-Heat exchange medium inlet; 8-Heat exchange medium outlet; 9-Cleaning cylinder; 10-Fixing plate; 11-Connecting rod; 12-Cleaning disc; 13-Slag discharge port; 14-Sealing cover plate; 15-Filter screen; 16-Rotary motor; 17-Output shaft; 18-Scraper; 19-Exhaust port; 20-Water tank; 21-Vertical plate; 22-Guide chamber; 23-Water storage chamber; 24-Liquid transfer sponge strip; 25-Water tank cover; 26-Water tank handle; 27-Transparent observation window; 28-Annular baffle; 29-Diverter plate; 30-Connecting rod; The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0014] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0015] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figures 1 to 3 As shown, a smelting furnace exhaust gas treatment device includes a vertical shell 1, a horizontal shell 2, a bottom cover 3, an air inlet pipe 4, a heat exchange chamber 5, a gas channel 6, a heat exchange medium inlet 7, a heat exchange medium outlet 8, a cleaning cylinder 9, a fixing plate 10, a connecting rod 11, a cleaning disc 12, a slag discharge port 13, a sealing cover plate 14, a filter screen 15, a rotary motor 16, an output shaft 17, a scraper 18, an exhaust port 19, a water tank 20, a vertical plate 21, a flow guide chamber 22, a water storage chamber 23, a liquid transfer sponge strip 24, a water tank cover 25, a water tank handle 26, a transparent observation window 27, an annular baffle 28, a diverter plate 29, and a connecting rod 30.

[0018] The upper end of the side wall of the vertical shell 1 is connected to a horizontal shell 2. The vertical shell 1 is mainly used to recover the heat contained in the exhaust gas generated by the smelting furnace to realize the recovery and utilization of energy, while the horizontal shell 2 is mainly used to filter the dust in the exhaust gas to avoid dust pollution.

[0019] The specific structure of the vertical shell 1 is as follows: A bottom cover 3 is installed at the bottom of the vertical housing 1. The bottom cover 3 is detachably installed at the bottom of the vertical housing 1 by bolts.

[0020] An air inlet pipe 4 is provided in the middle of the bottom cover 3. A flow divider 29 is provided on the inner wall of the bottom cover 3 above the air inlet pipe 4. The flow divider 29 is fixed to the bottom cover 3 by a connecting rod 30.

[0021] A heat exchange chamber 5 is provided at the lower end of the vertical shell 1. Several gas channels 6 are provided between the upper and lower surfaces of the heat exchange chamber 5. Several annular baffles 28 are provided on the outer wall of each gas channel 6. The annular baffles 28 of different gas channels 6 are arranged alternately. The cavity of the heat exchange chamber 5 is connected to a heat exchange medium inlet 7 and a heat exchange medium outlet 8. A cleaning cylinder 9 is fixed to the top of the vertical housing 1. The piston rod of the cleaning cylinder 9 is connected to a fixing plate 10. Several connecting rods 11 are provided at the bottom of the fixing plate 10. The ends of the connecting rods 11 are connected to cleaning discs 12. The cleaning discs 12 correspond one-to-one with the gas channels 6. The diameter of the cleaning discs 12 is the same as the inner diameter of the gas channels 6.

[0022] The specific structure of the horizontal shell 2 is as follows: The bottom of the horizontal shell 2 is provided with a slag discharge port 13, and a sealing cover 14 is installed at the bottom of the slag discharge port 13. The sealing cover 14 is detachably installed at the bottom of the slag discharge port 13 by bolts.

[0023] A filter screen 15 is provided inside the horizontal housing 2. The air-facing end face of the filter screen 15 is flush with the rear side of the slag discharge port 13 along the gas flow direction. A rotary motor 16 is installed on the outside of the side wall of the horizontal housing 2. The output shaft 17 of the rotary motor 16 passes through the middle of the filter screen 15 and is connected to a scraper 18. The scraper 18 is fitted with the air-facing end face of the filter screen 15. An exhaust port 19 is provided on the side wall of the horizontal housing 2.

[0024] A water tank 20 is provided on the top of the horizontal shell 2. A vertical plate 21 is provided inside the water tank 20. The vertical plate 21 divides the inner cavity of the water tank 20 into a flow guiding chamber 22 and a water storage chamber 23. A liquid transfer sponge strip 24 is placed on the vertical plate 21. One end of the liquid transfer sponge strip 24 passes through the flow guiding chamber 22, the top of the horizontal shell 2, and contacts the top of the filter screen 15, while the other end extends into the bottom of the water storage chamber 23.

[0025] The top of the water tank 20 is provided with a water tank cover 25, and the water tank cover 25 is provided with a water tank handle 26.

[0026] A transparent observation window 27 is provided on the side wall of the water storage chamber 23.

[0027] The working principle of this utility model is as follows: The exhaust gas generated by the smelting furnace enters the vertical shell 1 through the inlet pipe 4, is dispersed to the surrounding area by the diverter plate 29, and exchanges heat with the heat exchange medium circulating inside the heat exchange chamber 5 through different gas channels 6, thereby realizing heat recovery and utilization. The annular baffle 28 on the outer wall of the gas channel 6 can make the flow time of the heat exchange medium longer, which is more conducive to heat exchange. After heat recovery, the exhaust gas enters the horizontal shell 2, is filtered by the filter screen 15 to remove dust, and is discharged from the exhaust port 19, thus realizing the overall treatment of exhaust gas.

[0028] To prevent impurities from adhering to the gas channel 6 and affecting the efficiency of heat exchange, the inner wall of the gas channel 6 can be cleaned periodically. The cleaning cylinder 9 drives the cleaning disc 12 to extend into the gas channel 6 for cleaning. The cleaning disc 12 can be made of a soft material, such as rubber, to avoid scratching the inner wall of the gas channel 6. The impurities after cleaning can be removed periodically by opening the bottom cover 3.

[0029] Meanwhile, in order to improve the dust trapping effect of the filter screen 15, a wet method can be used. Of course, there is no need for spraying, as spraying wastes a lot of water. The water in the water storage chamber 23 can be guided to the surface of the filter screen 15 through the liquid transfer sponge strip 24, so as to better trap the dust. The trapped impurities are scraped off by the scraper 18 to prevent the filter screen 15 from clogging. The scraped impurities can be cleaned by opening the closed cover 14 periodically. The water level in the water tank 20 can be observed through the transparent observation window 27 and water can be replenished in time.

[0030] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A device for treating exhaust gas from a smelting furnace, characterized in that, The vertical shell (1) is connected to a horizontal shell (2) at the upper end of its side wall. A bottom cover (3) is installed at the bottom of the vertical shell (1). An air inlet pipe (4) is provided in the middle of the bottom cover (3). A heat exchange chamber (5) is provided at the lower end of the interior of the vertical shell (1). Several gas channels (6) are provided between the upper and lower surfaces of the heat exchange chamber (5). The cavity of the heat exchange chamber (5) is connected to a heat exchange medium inlet (7) and a heat exchange medium outlet (8). A cleaning cylinder (9) is fixed at the top of the vertical shell (1). A fixing plate (10) is connected to the piston rod of the cleaning cylinder (9). Several connecting rods (11) are provided at the bottom of the fixing plate (10). A cleaning disc (12) is connected to the end of the connecting rod (11). The cleaning disc (12) corresponds one-to-one with the gas channel (6). The diameter of the cleaning disc (12) is the same as the inner diameter of the gas channel (6). The bottom of the horizontal shell (2) is provided with a slag discharge port (13). A closed cover plate (14) is installed at the bottom of the slag discharge port (13). A filter screen (15) is provided inside the horizontal shell (2). The air-facing end face of the filter screen (15) is flush with the rear side of the slag discharge port (13) along the gas flow direction. A rotary motor (16) is installed on the outside of the side wall of the horizontal shell (2). The output shaft (17) of the rotary motor (16) passes through the middle of the filter screen (15) and is connected to a scraper (18). The scraper (18) is fitted to the air-facing end face of the filter screen (15). An exhaust port (19) is provided on the side wall of the horizontal shell (2).

2. The smelting furnace exhaust gas treatment device according to claim 1, characterized in that, A water tank (20) is provided on the top of the horizontal shell (2). A vertical plate (21) is provided inside the water tank (20). The vertical plate (21) divides the inner cavity of the water tank (20) into a flow guiding chamber (22) and a water storage chamber (23). A liquid transfer sponge strip (24) is placed on the vertical plate (21). One end of the liquid transfer sponge strip (24) passes through the flow guiding chamber (22), the top of the horizontal shell (2) and contacts the top of the filter screen (15), and the other end extends into the bottom of the water storage chamber (23).

3. The smelting furnace exhaust gas treatment device according to claim 2, characterized in that, The top of the water tank (20) is provided with a water tank cover (25), and the water tank cover (25) is provided with a water tank handle (26).

4. The smelting furnace exhaust gas treatment device according to claim 3, characterized in that, A transparent observation window (27) is provided on the side wall of the water storage chamber (23).

5. The smelting furnace exhaust gas treatment device according to claim 1, characterized in that, Each gas channel (6) has several annular baffles (28) on its outer wall, and the annular baffles (28) of different gas channels (6) are arranged in an alternating manner.

6. The smelting furnace exhaust gas treatment device according to claim 1, characterized in that, The inner wall of the bottom cover (3) is provided with a flow divider (29) above the air intake pipe (4), and the flow divider (29) is fixed to the bottom cover (3) by a connecting rod (30).

7. The smelting furnace exhaust gas treatment device according to claim 1, characterized in that, The bottom cover (3) is detachably installed at the bottom of the vertical housing (1) by bolts.

8. The smelting furnace exhaust gas treatment device according to claim 1, characterized in that, The sealing cover (14) is detachably installed at the bottom of the slag discharge port (13) by bolts.

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