Off-line bag-type dust collector for lime kiln gas

Abstract

This utility model discloses an offline baghouse dust collector for lime kiln gas, belonging to the field of environmental engineering. It includes a dust collector housing with a dust hopper at the bottom. Several electromagnetic pulse valves are fixedly connected to the left side of the housing, and an air storage tank is fixedly connected below each valve. A rotary valve is fixedly connected to the bottom of the dust hopper, and a screw conveyor is fixedly connected to the bottom of the rotary valve. This utility model utilizes electromagnetic pulse valves, an air storage tank, and dust collector bags on the side of the dust collector housing, and a rotary valve and screw conveyor on the dust hopper. Filtration is achieved through the cooperation of the dust collector bags and the air storage tank. Furthermore, the electromagnetic pulse valves allow for cleaning of the dust collector bags, and the rotary valve and screw conveyor discharge the dislodged dust. The dust collector is divided into multiple chambers; during cleaning, only the inlet valve of one chamber is closed, while the other chambers continue operating, ensuring continuous operation.

Description

Technical Field

[0001] This utility model belongs to the field of environmental engineering technology, specifically relating to an offline bag filter for lime kiln gas. Background Technology

[0002] Lime kilns are core equipment in the building materials, metallurgy, and chemical industries for calcining limestone. During production, they release large amounts of dust-laden, high-temperature kiln gas, primarily composed of CO2, dust (CaO and CaCO3 particles), and small amounts of sulfur oxides (SO4). x This type of flue gas is characterized by high temperature (usually 200~400℃), high dust concentration (up to 50g / Nm³ or more), and strong particle adhesion. If it is emitted directly without treatment, it will not only seriously pollute the atmospheric environment, but also waste resources and threaten the surrounding ecology and human health.

[0003] Traditional methods for treating exhaust gas from lime kilns primarily employ cyclone dust collectors, wet scrubbers, or electrostatic precipitators, but these methods have significant limitations. Baghouse dust collectors, with their high collection efficiency and adaptability, are gradually becoming the mainstream technology. However, baghouse dust collectors require pausing during cleaning, which disrupts the continuity of operation and results in low efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing equipment cannot effectively achieve the cleaning process of baghouse dust collection technology, which requires pausing the dust collector. This affects the continuity of the dust collector's operation and results in low efficiency.

[0005] The technical solution adopted to solve the above-mentioned technical problems is to provide an offline bag filter for lime kiln gas.

[0006] Furthermore, the device includes a dust collector housing, with a dust collector hopper at the bottom of the housing. Several electromagnetic pulse valves are fixedly connected to the left side of the housing, and an air storage tank is fixedly connected below each electromagnetic pulse valve. A rotary valve is fixedly connected to the bottom of the dust collector hopper, and a screw conveyor is fixedly connected to the bottom of the rotary valve.

[0007] Furthermore, a dust collector bag is provided at the rear end of the air storage bag, and the dust collector bag and the electromagnetic pulse valve are correspondingly arranged. A dust collector frame is fixedly connected to the bottom of the air storage bag, and the dust collector frame is fixedly connected to the dust collector housing.

[0008] The above technical solution utilizes the combination of dust collector bags and air storage tanks for filtration. Furthermore, the dust collector bags can be cleaned with the assistance of electromagnetic pulse valves. The detached dust is discharged through the combination of a rotary valve and a screw conveyor. The dust collector is divided into multiple chambers, and only the air inlet valve of one chamber is closed during cleaning, while the other chambers continue to operate, ensuring continuous operation.

[0009] Furthermore, a perforated plate is fixedly connected to the outside of the dust collector housing, a protective device is fixedly connected to the top of the dust collector housing around its perimeter, a number of dust collector top covers are provided on the top surface of the dust collector housing, the dust collector top covers are distributed in a rectangular array, and a dust collector air outlet is provided on the top right side of the dust collector housing.

[0010] Furthermore, a dust collector inlet is provided on the left side of the dust collector hopper, and the dust collector inlet and outlet are provided correspondingly. A dust collector inspection door is provided at the bottom right side of the dust collector hopper.

[0011] Through the above technical solution, the top cover of the dust collector is used to ensure the safety of construction personnel, the air inlet and outlet of the dust collector are used to draw in exhaust gas, filter it, and then discharge it again, and the ash hopper inspection door is used to check the internal condition of the dust collector ash hopper.

[0012] Furthermore, the outer side of the dust collector hopper is provided with several dust collector support legs, the dust collector support legs are fixedly connected to the dust collector housing, the bottom of the dust collector support legs is fixedly connected to a dust collector support leg base plate, several hopper horizontal tie rods are fixedly connected between the dust collector support legs, and hopper diagonal tie rods are fixedly connected between the hopper horizontal tie rods and the dust collector support legs.

[0013] Furthermore, a housing flange is fixedly connected to the bottom of the dust collector housing, and a hopper flange is fixedly connected to the top of the dust collector hopper, with the housing flange and the hopper flange being configured accordingly.

[0014] Through the above technical solutions, the dust collector support legs, the horizontal tie rods of the dust hopper, and the diagonal tie rods of the dust hopper are all used to provide support for the dust collector hopper and the dust collector housing, while the housing flange and the dust hopper flange are used to fix the dust collector hopper and the dust collector housing.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention features an electromagnetic pulse valve, an air storage tank, and dust collection bags installed on the side of the dust collector housing. A rotary valve and a screw conveyor are also installed on the dust collector hopper. Filtration is achieved through the cooperation of the dust collection bags and the air storage tank. The electromagnetic pulse valve allows for cleaning of the dust collection bags, and the rotary valve and screw conveyor work together to discharge the dislodged dust. The dust collector is divided into multiple chambers; during cleaning, only the inlet valve of one chamber is closed, while the other chambers continue to operate, ensuring continuous operation. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of the offline bag filter for lime kiln gas of this utility model;

[0018] Figure 2 This is a second-view three-dimensional structural diagram of the offline bag filter for lime kiln gas of this utility model;

[0019] Figure 3 This is a front view of the offline bag filter for lime kiln gas of this utility model;

[0020] Figure 4 This is a side view of the offline bag filter for lime kiln gas of this utility model.

[0021] Attached reference numerals: 1. Protective device; 2. Perforated plate; 3. Electromagnetic pulse valve; 4. Air storage tank; 5. Housing flange; 6. Dust hopper flange; 7. Dust collector hopper; 8. Rotary rotary valve; 9. Screw conveyor; 10. Dust collector support leg; 11. Dust collector support leg base plate; 12. Dust collector top cover; 13. Dust collector bag; 14. Dust collector frame; 15. Dust collector housing; 16. Dust collector air inlet; 17. Dust hopper diagonal tie rod; 18. Dust hopper inspection door; 19. Dust hopper horizontal tie rod; 20. Dust collector air outlet. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] like Figures 1-4 As shown, the offline baghouse dust collector for lime kiln gas includes a dust collector housing 15. A dust collector hopper 7 is located at the bottom of the housing 15. A housing flange 5 is fixedly connected to the bottom of the housing 15, and a dust hopper flange 6 is fixedly connected to the top of the dust hopper 7. The housing flange 5 and the dust hopper flange 6 are correspondingly arranged. Several electromagnetic pulse valves 3 are fixedly connected to the left side of the housing 15. The electromagnetic pulse valves 3 are used to eject high-pressure gas from the air storage tank 4 to clean the dust inside the filter bags 13. A gas storage tank 4 is fixedly connected below the pulse valve 3. The gas storage tank 4 is used to store high-pressure gas. A dust collector bag 13 is provided at the rear end of the gas storage tank 4. The dust collector bag 13 is used to collect and filter dust. The dust collector bag 13 is correspondingly arranged with the electromagnetic pulse valve 3. A dust collector frame 14 is fixedly connected to the bottom of the gas storage tank 4. The dust collector frame 14 is fixedly connected to the dust collector housing 15. A rotary valve 8 is fixedly connected to the bottom of the dust collector hopper 7. A screw conveyor 9 is fixedly connected to the bottom of the rotary valve 8.

[0024] A perforated plate 2 is fixedly connected to the outside of the dust collector housing 15. A protective device 1 is fixedly connected to the top of the dust collector housing 15. Several dust collector top covers 12 are provided on the top surface of the dust collector housing 15. The dust collector top covers 12 are distributed in a rectangular array. A dust collector air outlet 20 is provided on the top right side of the dust collector housing 15.

[0025] The dust collector hopper 7 has a dust collector inlet 16 on its left side, and the dust collector inlet 16 and the dust collector outlet 20 are correspondingly arranged. The dust collector hopper 7 has an inspection door 18 at the bottom right side, which is used to check the internal condition of the dust collector hopper 7. The dust collector hopper 7 has several dust collector support legs 10 on its outer side, and the dust collector support legs 10 are fixedly connected to the dust collector housing 15. The bottom of the dust collector support legs 10 is fixedly connected to a dust collector support leg base plate 11. Several dust collector horizontal tie rods 19 are fixedly connected horizontally between the dust collector support legs 10, and dust collector diagonal tie rods 17 are fixedly connected between the dust collector horizontal tie rods 19 and the dust collector support legs 10.

[0026] The working principle of this embodiment is as follows: During filtration, exhaust gas enters the dust collector housing 15 through the dust collector inlet 16 and is evenly distributed to each filter bag area by the guide plate. When the gas passes through the filter bag, the dust is trapped on the outer surface (or inner surface, depending on the design) of the dust collector bag 13. Clean gas passes through the dust collector bag 13 and enters the dust collector housing 15, and is discharged through the dust collector outlet 20. As the operating time increases, a dust layer gradually accumulates on the surface of the dust collector bag 13, which actually improves the filtration efficiency because it can capture finer particles.

[0027] When the resistance (pressure difference) of the dust collector bag 13 reaches the set value or is triggered according to the time cycle, the electromagnetic pulse valve 3 is activated. The electromagnetic pulse valve 3 opens instantaneously, and compressed air is ejected from the nozzle through the blowpipe. The high-speed airflow induces the surrounding air to form an impact airflow several times the volume of the compressed air, which enters the dust collector bag 13. The high-pressure airflow causes the dust collector bag 13 to expand instantaneously and vibrate violently, causing the attached dust layer to break and fall off. The fallen dust falls into the dust collector hopper 7 and is discharged through the rotary valve 8.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. An off-line bag-type dust collector for lime kiln off-gas, comprising a dust collector box (15), characterized in that: The bottom of the dust collector housing (15) is provided with a dust collector hopper (7). Several electromagnetic pulse valves (3) are fixedly connected to the left side of the dust collector housing (15). An air storage tank (4) is fixedly connected below the electromagnetic pulse valves (3). A star-shaped unloader (8) is fixedly connected to the bottom of the dust collector hopper (7). A screw conveyor (9) is fixedly connected to the bottom of the star-shaped unloader (8).

2. The off-line bag type dust collector for lime kiln off-gas according to claim 1, characterized in that, The air storage bag (4) is provided with a dust removal bag (13) at the rear end. The dust removal bag (13) and the electromagnetic pulse valve (3) are respectively arranged. The bottom of the air storage bag (4) is fixedly connected to a dust removal frame (14). The dust removal frame (14) and the dust collector box (15) are fixedly connected.

3. The off-line bag type dust collector for lime kiln off-gas according to claim 1, characterized in that, The dust collector housing (15) is fixedly connected to the outside of a perforated plate (2), and a protective device (1) is fixedly connected to the top of the dust collector housing (15). Several dust collector top covers (12) are provided on the top surface of the dust collector housing (15). The dust collector top covers (12) are arranged in a rectangular array. A dust collector air outlet (20) is provided on the top right side of the dust collector housing (15).

4. The off-line bag house dust collector for lime kiln off-gas as claimed in claim 1 wherein, The dust collector hopper (7) has a dust collector inlet (16) on the left side, and the dust collector inlet (16) and the dust collector outlet (20) are provided in correspondence. The dust collector hopper (7) has an inspection door (18) at the bottom right side.

5. The off-line bag house dust collector for lime kiln off-gas as claimed in claim 1 wherein, The dust collector hopper (7) is provided with several dust collector support legs (10) on the outside. The dust collector support legs (10) are fixedly connected to the dust collector housing (15). The bottom of the dust collector support legs (10) is fixedly connected to a dust collector support leg base plate (11). Several dust collector horizontal tie rods (19) are fixedly connected between the dust collector support legs (10). The dust collector horizontal tie rods (19) and the dust collector support legs (10) are fixedly connected to a dust collector diagonal tie rod (17).

6. The offline bag filter for lime kiln gas according to claim 1, characterized in that, The bottom of the dust collector housing (15) is fixedly connected to a housing flange (5), and the top of the dust collector hopper (7) is fixedly connected to a hopper flange (6). The housing flange (5) and the hopper flange (6) are respectively provided.

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