Tail gas purification treatment device for calcining furnace

Abstract

The utility model relates to the field of tail gas purification, in particular to a calcining furnace tail gas purification treatment device which comprises a dust removal box and a spray tower, a gas inlet pipe is arranged at the left end of the dust removal box, a gas outlet pipe is arranged at the right end of the dust removal box, an access door is arranged at the upper end of the dust removal box, an inclined plate is arranged in the dust removal box, and a multi-stage filtering mechanism is arranged on the upper side of the inclined plate. A pushing mechanism is arranged on the lower side of the inclined plate, a bin door for collecting smoke dust is arranged at the right end of the dust removal box, the outer wall of the spraying tower is connected with an air outlet pipe of the dust removal box through an air pipe, a water pump is arranged at the upper end of the spraying tower, a spraying assembly for purifying tail gas is arranged in the spraying tower, and a water outlet port of the water pump is connected with the spraying assembly through a hose. A water inlet port of the water pump is connected with an external alkali source, and an exhaust pipe is arranged on the outer wall of the spray tower; the tail gas purification device combines double filtration of the honeycomb ceramic fiber layer and the activated carbon layer, the tail gas purification efficiency is improved, meanwhile, the spraying assembly sprays alkali liquor, the alkali liquor makes full contact with the tail gas, and the purification effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas purification, and in particular to a device for purifying and treating exhaust gas from a calcining furnace. Background Technology

[0002] With the rapid development of industry, calcining furnaces have been widely used in many production fields, such as metallurgy and chemical industry. However, calcining furnaces generate a large amount of exhaust gas during operation. This exhaust gas contains a large amount of dust particles and harmful gases such as sulfur dioxide and nitrogen oxides. If these exhaust gases are directly discharged into the atmosphere, they will cause serious pollution to the environment and endanger the ecological balance and human health.

[0003] Currently, in terms of smoke and dust treatment, traditional devices only use a simple single-stage filtration structure, which is not effective in intercepting smoke and dust particles in the exhaust gas. This results in some fine smoke and dust particles being easily discharged with the exhaust gas, failing to achieve the ideal purification effect. On the other hand, traditional devices are not convenient enough for collecting and cleaning smoke and dust. Once smoke and dust accumulate inside the device, it is difficult to clean effectively, thus affecting the normal operation of the device.

[0004] Therefore, in view of the problems of poor single-stage filtration and inconvenient dust collection and cleaning in the traditional dust treatment devices, a calcining furnace exhaust gas purification treatment device can be designed. This device not only effectively intercepts large dust particles, but also further adsorbs fine particles and harmful gases, thereby improving the purification efficiency of the exhaust gas. Utility Model Content

[0005] In order to overcome the problems of poor single-stage filtration and inconvenient dust collection and cleaning in traditional dust treatment devices.

[0006] The technical solution of this utility model is as follows: a calcining furnace tail gas purification and treatment device, including a dust collector and a spray tower. An air inlet pipe is provided at the left end of the dust collector, an air outlet pipe is provided at the right end of the dust collector, an inspection door is provided at the upper end of the dust collector, an inclined plate is provided inside the dust collector, a multi-stage filtration mechanism is provided on the upper side of the inclined plate, a material pushing mechanism is provided on the lower side of the inclined plate, a dust collection door is provided at the right end of the dust collector, the outer wall of the spray tower is connected to the air outlet pipe of the dust collector through an air pipe, a water pump is provided at the upper end of the spray tower, a spray assembly for purifying tail gas is provided inside the spray tower, the water outlet port of the water pump is connected to the spray assembly through a hose, the water inlet port of the water pump is connected to an external alkali source, and an exhaust pipe is provided on the outer wall of the spray tower.

[0007] Preferably, the multi-stage filtration mechanism includes filter plates, which are in two sets and have a double-layer structure. The windward side of the filter plate is provided with a honeycomb ceramic fiber layer, and the leeward side of the filter plate is provided with an activated carbon layer. A handle is provided at the top of the filter plate.

[0008] Preferably, the side end of the filter plate is integrally fixedly connected with a convex rail, and the inner wall of the dust collector is provided with a sliding groove that matches the convex rail, and the convex rail and the sliding groove are slidably connected.

[0009] Preferably, the convex rail and the slide groove are equipped with matching magnets, and the convex rail and the slide groove are magnetically connected.

[0010] Preferably, the feeding mechanism includes a rotary motor. A rotary motor is installed at the left end of the dust collection box. The output shaft of the rotary motor is connected to a rotating shaft. Screw blades are fixedly connected to the outer wall of the rotating shaft. The rotating screw blades push the smoke and dust to the bin door.

[0011] Preferably, the spray assembly includes a fixing plate, the top of the spray tower is provided with the fixing plate, the surface of the fixing plate is provided with a retaining ring, the retaining ring is provided with a spray pipe, and the outlet of the spray pipe is provided with a nozzle.

[0012] Preferably, the inlet of the spray pipe is equipped with a T-shaped pipe, and the inlet of the T-shaped pipe is connected to the outlet of the water pump through a flexible hose.

[0013] Preferably, a conical hopper is installed at the bottom of the spray tower, and a waste liquid pipe is installed at the bottom of the outer wall of the spray tower.

[0014] The beneficial effects of this utility model are as follows: Compared with traditional devices, this solution uses a double-layer filter plate with a multi-stage filtration mechanism, combined with the dual filtration of honeycomb ceramic fiber layer and activated carbon layer. This not only effectively intercepts large particles of smoke and dust, but also further adsorbs fine particles and harmful gases, improving the purification efficiency of exhaust gas. At the same time, the spray component evenly sprays alkaline solution, which comes into full contact with the exhaust gas, resulting in a more significant purification effect. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the calcining furnace exhaust gas purification and treatment device of this utility model.

[0016] Figure 2 The diagram shown is a first three-dimensional structural schematic of the dust removal box of the calcining furnace exhaust gas purification and treatment device of this utility model.

[0017] Figure 3 The diagram shown is a two-dimensional structural schematic of the dust removal box of the calcining furnace exhaust gas purification and treatment device of this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the spray component of the calciner exhaust gas purification and treatment device of this utility model.

[0019] Figure 5 The diagram shown is a three-dimensional structural schematic of the spray tower of the calciner tail gas purification treatment device of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Dust collector; 2. Spray tower; 3. Inlet pipe; 4. Outlet pipe; 5. Inspection door; 6. Inclined plate; 7. Chamber door; 8. Water pump; 9. Exhaust pipe; 10. Filter plate; 11. Handle; 12. Convex rail; 13. Slide groove; 14. Rotary motor; 15. Shaft; 16. Screwdriver blade; 17. Fixing plate; 18. Snap ring; 19. Spray pipe; 20. Nozzle; 21. T-joint; 22. Conical hopper; 23. Waste liquid pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 5 This utility model provides an embodiment of a calcining furnace exhaust gas purification device, comprising a dust collector 1 and a spray tower 2. An inlet pipe 3 is provided at the left end of the dust collector 1, and an outlet pipe 4 is provided at the right end. An inspection door 5 is provided at the upper end of the dust collector 1. An inclined plate 6 is provided inside the dust collector 1, with a multi-stage filtration mechanism on the upper side of the inclined plate 6 and a pushing mechanism on the lower side. A dust collection door 7 is provided at the right end of the dust collector 1. The outer wall of the spray tower 2 is connected to the outlet pipe 4 of the dust collector 1 via an air pipe. A water pump 8 is provided at the upper end of the spray tower 2, and a spray assembly for purifying exhaust gas is provided inside the spray tower 2. The outlet port of the water pump 8 is connected to the spray assembly via a hose, and the inlet port of the water pump 8 is connected to an external alkali source. An exhaust pipe 9 is provided on the outer wall of the spray tower 2. The dust collector 1 is the front end of the entire purification device, responsible for the initial removal of large particles from the exhaust gas. The particulate matter is collected by an inclined plate 6 installed inside the dust collection box 1, which guides the flow of dust. Its inclined design helps the dust fall naturally under gravity, making it easy to collect. The multi-stage filtration mechanism effectively intercepts dust particles in the exhaust gas. The multi-stage design improves filtration efficiency and ensures the initial purification effect of the exhaust gas. The pushing mechanism is installed on the lower side of the inclined plate 6 to push the dust into the bin door 7, making it convenient for staff to collect. The spray tower 2 is the rear part of the exhaust gas purification treatment device, responsible for further purifying the harmful gases in the exhaust gas. The water pump 8 is installed at the upper end of the spray tower 2 and is the power source of the spray assembly. By drawing alkaline water from the outside, it provides a continuous spray liquid to the spray assembly. The spray assembly evenly sprays alkaline liquid, which reacts chemically with the harmful gases in the exhaust gas to achieve the purification purpose. The exhaust pipe 9 is set on the outer wall of the spray tower 2 to discharge the purified exhaust gas.

[0023] Please see Figure 1 - Figure 3In this embodiment, the multi-stage filtration mechanism includes filter plates 10, which have two sets and a double-layer structure. The windward side of the filter plates 10 is provided with a honeycomb ceramic fiber layer, and the leeward side is provided with an activated carbon layer. A handle 11 is provided at the upper end of each filter plate 10. A convex rail 12 is integrally fixedly connected to the side end of each filter plate 10. A sliding groove 13 adapted to the convex rail 12 is provided on the inner wall of the dust collection box 1. The convex rail 12 and the sliding groove 13 are slidably connected. Matching magnets are provided inside the convex rail 12 and the sliding groove 13, and the convex rail 12 and the sliding groove 13 are magnetically connected. The pushing mechanism includes a rotary motor 14, which is located at the left end of the dust collection box 1. The output shaft of the rotary motor 14 is connected to a rotating shaft 15. An auger blade 16 is fixedly connected to the outer wall of the rotating shaft 15. The auger blade 16 rotates and pushes the dust to the chamber door 7. There are two sets of filter plates 10, and each set is double-layered. The structural design enhances the filtration effect. The honeycomb ceramic fiber layer has excellent high-temperature resistance and filtration efficiency, effectively intercepting large particles of smoke and some harmful substances in the exhaust gas. The activated carbon layer has extremely strong adsorption capacity, which can further adsorb fine particles and harmful gases such as sulfur dioxide and nitrogen oxides in the exhaust gas, thereby improving the purification effect of the exhaust gas. The convex rail 12 and the slide 13 adopt a sliding connection, which allows the filter plate 10 to move along the slide 13 inside the dust collector 1, facilitating installation, disassembly or cleaning. Matching magnets are also provided in the convex rail 12 and the slide 13, so that the convex rail 12 and the slide 13 form a magnetic connection. This design enhances the stability of the filter plate 10. The main power source of the pushing mechanism is the rotary motor 14. When the rotating shaft 15 rotates, the auger blades 16 can rotate and push the smoke and dust along the bottom of the dust collector 1 to the door 7.

[0024] Please see Figure 1 and Figure 4 In this embodiment, the spray assembly includes a fixing plate 17. The fixing plate 17 is set on the top of the spray tower 2. A retaining ring 18 is set on the surface of the fixing plate 17. A spray pipe 19 is set inside the retaining ring 18. A nozzle 20 is set at the outlet of the spray pipe 19. A three-way pipe 21 is set at the inlet of the spray pipe 19. The inlet of the three-way pipe 21 is connected to the outlet port of the water pump 8 through a hose. A conical bucket 22 is set at the bottom of the spray tower 2. A waste liquid pipe 23 is set at the bottom of the outer wall of the spray tower 2. The fixing plate 17 is the supporting structure of the spray assembly and is installed on the top of the spray tower 2. The retaining ring 18 is set on the surface of the fixing plate 17 to fix the spray pipe 19. The spray pipe 19 is responsible for transporting the alkaline solution delivered by the water pump 8 to the nozzle 20. The nozzle 20 sprays the alkaline solution to fully contact the exhaust gas and improve the purification efficiency. The design of the conical bucket 22 allows the waste liquid to flow smoothly into the bottom, which is convenient for subsequent discharge.

[0025] During operation, exhaust gas is introduced into dust collection box 1 through intake pipe 3. It first passes through filter plate 10, which effectively intercepts large particles and dust in the exhaust gas. These particles and dust fall onto inclined plate 6 under the action of gravity and continue to slide to the bottom of dust collection box 1. At the same time, rotary motor 14 starts, driving shaft 15 and auger blades 16 to rotate, conveying the dust and large particles at the bottom of dust collection box 1 to the door 7 for easy collection by staff.

[0026] Subsequently, the exhaust gas enters the spray tower 2 through the gas pipe. The water pump 8 extracts the alkaline solution from the outside and pumps it to the spray pipe 19. The nozzle 20 sprays the alkaline solution evenly, making full contact with the exhaust gas to achieve the purification treatment of the exhaust gas. Finally, the purified exhaust gas is discharged into the atmosphere through the exhaust pipe 9, while the waste liquid is discharged through the waste liquid pipe 23.

[0027] Through the above steps, compared with traditional devices, this solution, through the multi-stage filtration mechanism using a double-layer filter plate 10, combined with the dual filtration of a honeycomb ceramic fiber layer and an activated carbon layer, not only effectively intercepts large particles of smoke and dust, but also further adsorbs fine particles and harmful gases, improving the purification efficiency of exhaust gas. At the same time, the spray component evenly sprays alkaline solution, which comes into full contact with the exhaust gas, resulting in a more significant purification effect. This solves the problems of poor single-stage filtration interception effect and inconvenient smoke and dust collection and cleaning in traditional devices.

Claims

1. A calcining furnace exhaust gas purification and treatment device, characterized in that: It includes a dust collector (1) and a spray tower (2). The dust collector (1) has an air inlet pipe (3) at its left end and an air outlet pipe (4) at its right end. The dust collector (1) has an inspection door (5) at its upper end. The dust collector (1) has an inclined plate (6) inside. The inclined plate (6) has a multi-stage filtration mechanism on its upper side and a material pushing mechanism on its lower side. The dust collector (1) has a dust collection door (7) at its right end. The outer wall of the spray tower (2) is connected to the air outlet pipe (4) of the dust collector (1) via an air pipe. The spray tower (2) has a water pump (8) at its upper end and a spray assembly for purifying exhaust gas inside. The water outlet of the water pump (8) is connected to the spray assembly via a hose. The water inlet of the water pump (8) is connected to an external alkali source. The outer wall of the spray tower (2) has an exhaust pipe (9).

2. The calcining furnace tail gas purification and treatment device according to claim 1, characterized in that: The multi-stage filtration mechanism includes filter plates (10), which are in two sets and have a double-layer structure. The windward side of the filter plate (10) is provided with a honeycomb ceramic fiber layer, and the leeward side of the filter plate (10) is provided with an activated carbon layer. A handle (11) is provided at the upper end of the filter plate (10).

3. The calcining furnace tail gas purification and treatment device according to claim 2, characterized in that: The side end of the filter plate (10) is integrally fixedly connected with a convex rail (12), and the inner wall of the dust collector (1) is provided with a sliding groove (13) that is adapted to the convex rail (12). The convex rail (12) and the sliding groove (13) are slidably connected.

4. The calcining furnace tail gas purification and treatment device according to claim 3, characterized in that: The convex rail (12) and the slide (13) are equipped with matching magnets, and the convex rail (12) and the slide (13) are magnetically connected.

5. The calcining furnace tail gas purification and treatment device according to claim 4, characterized in that: The feeding mechanism includes a rotary motor (14). A rotary motor (14) is provided at the left end of the dust collection box (1). The output shaft of the rotary motor (14) is connected to a rotating shaft (15). An auger blade (16) is fixedly connected to the outer wall of the rotating shaft (15). The auger blade (16) rotates and pushes the smoke and dust to the bin door (7).

6. The calcining furnace tail gas purification and treatment device according to claim 5, characterized in that: The spray assembly includes a fixing plate (17), the top of the spray tower (2) is provided with a fixing plate (17), the surface of the fixing plate (17) is provided with a retaining ring (18), a spray pipe (19) is provided inside the retaining ring (18), and a nozzle (20) is provided at the outlet of the spray pipe (19).

7. The calcining furnace tail gas purification and treatment device according to claim 6, characterized in that: The inlet of the spray pipe (19) is equipped with a three-way pipe (21), and the inlet of the three-way pipe (21) is connected to the outlet of the water pump (8) through a hose.

8. The calcining furnace tail gas purification and treatment device according to claim 7, characterized in that: A conical bucket (22) is installed at the bottom of the spray tower (2), and a waste liquid pipe (23) is installed at the bottom of the outer wall of the spray tower (2).

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