Efficient dedusting demister

Abstract

The utility model belongs to the technical field of dedusting and demisting purification equipment, and particularly relates to an efficient dedusting and demisting device which comprises an inlet diffuser, a shell is fixedly connected to the side of the inlet diffuser, a sieve plate assembly is installed in the inlet diffuser, a water distributor is arranged on the side of the sieve plate assembly, and a water outlet is formed in the shell. A circulating process water pipeline is fixedly connected to the side of the water distributor, an external discharge process water pipeline is fixedly connected to the side of the circulating process water pipeline, a process water pump unit is fixedly connected to the bottom end of the external discharge process water pipeline, and an inlet process water pipeline is fixedly connected to the top of the process water pump unit; the top end of the inlet process water pipeline is fixedly connected with a water purification tank, the side of the water purification tank is fixedly connected with a liquid level instrument, and the top of the water purification tank is fixedly connected with a water seal overflow pipe / weir; and due to the integrated design of the equipment, the investment cost is greatly saved, and the financial burden is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, demisting and purification equipment, in particular to a high-efficiency dust removal and demisting device. Background Art

[0002] Water dust removal can be divided into water-spraying dust removal, water-pressurizing dust removal, and water-storage dust removal based on the dust removal form. The dust removal principle is to remove particulate matter by contacting and reacting dust-containing flue gas with water, which is the role of dust removal. Water-spraying dust removal includes packed scrubbers, turbulent ball scrubbers, and other forms of towers with spray structures; water-pressurizing dust removal includes gravity spray tower scrubbers, cyclone scrubbers, jet scrubbers, and Venturi scrubbers; water-storage dust removal includes water bath dust collectors, impulse dust collectors, vortex dust collectors, and other forms of water-storage dust collectors.

[0003] In Chinese patent CN201821152256.4, the utility model discloses a high-efficiency dust removal and demister, including a dust removal pipe, a flushing pipe arranged at the lower part of the dust removal pipe, a plurality of swirl plates and flushing heads are installed at intervals on the flushing pipe, the dust removal pipe is formed by sleeve connection of an inner pipe and an outer pipe, a water collection channel is arranged between the inner pipe and the outer pipe, the inner pipe is provided with an annular opening at a position corresponding to the swirl plate, the bottom of the annular opening is flush with the top surface of the swirl plate, and the outer side of the annular opening is covered with a water collection wire mesh protruding into the water collection channel. The utility model is provided with multiple dust removal and demister structures, with good dust removal and demister effects, and is provided with a unique drainage structure, with timely drainage and good comprehensive performance.

[0004] Most of the existing dust collectors have problems that are difficult to solve, including low dust removal efficiency, easy blockage of equipment and pipelines, mud on the fan impeller, high motor vibration, huge water and electricity consumption, etc.; the problem of not being able to ensure the long-term normal and stable operation of the dust removal equipment.

[0005] Therefore, a high-efficiency dust and mist remover is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology, most of the difficult problems existing in the existing dust collectors have been solved, including low dust removal efficiency, easy blockage of equipment and pipelines, mud on the fan impeller, high motor vibration, huge water and electricity consumption, etc.; the problem of not being able to ensure the long-term normal and stable operation of the dust removal equipment.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a high-efficiency dust and mist remover, including an inlet diffuser, the side of the inlet diffuser is fixedly connected to a shell, and a sieve plate assembly is installed inside the inlet diffuser, a water distributor is arranged on the side of the sieve plate assembly, and the side of the water distributor is fixedly connected to a circulating process water pipeline, and the side of the circulating process water pipeline is fixedly connected to an external process water pipeline, the bottom end of the external process water pipeline is fixedly connected to a process water pump unit, and the top of the process water pump unit is fixedly connected to an inlet process water pipeline, and the top of the inlet process water pipeline is fixedly connected to a clean water tank, and the side of the clean water tank is fixedly connected to a circulating process water pipeline. A liquid level meter is fixedly connected to the side, and a water seal overflow pipe / weir is fixedly connected to the top of the clean water tank, and a sewage tank is fixedly connected to the top of the water seal overflow pipe / weir, an exciter is installed on the side of the sewage tank, and a slurry discharge valve is fixedly connected to the bottom of the sewage tank, a slag discharge machine is installed at the bottom of the slurry discharge valve, and a slag discharge pipe is fixedly connected to the side of the slag discharge machine, an outlet diffuser is fixedly connected to the top of the shell, and a defogger is installed inside the shell, and a backwash process water pipeline is fixedly connected to the side of the shell, an impulse pipe box is arranged at the bottom of the defogger, and a liquid level grid is fixedly connected to the bottom of the impulse pipe box, and a steel structure frame is fixedly connected to the bottom of the liquid level grid.

[0008] Preferably, the inlet diffuser and the sewage tank form a communicating structure, and the sieve plate assemblies are arranged at equal intervals inside the inlet diffuser.

[0009] Preferably, the water distributor forms a communication structure with the process water pump unit through the circulating process water pipeline, and the water distributors are arranged at equal intervals on the sides of the circulating process water pipeline.

[0010] Preferably, the process water pump unit includes a water pump, inlet and outlet pipelines, valves, pipe fittings, and instruments, and the sewage tank is connected to the process water pump unit through a water seal overflow pipe / weir, a clean water tank, and an inlet process water pipeline.

[0011] Preferably, the slag discharge pipe forms a communication structure with the sewage tank through the slag discharge machine and the slurry discharge valve, and the sewage tank and the steel structure frame are integrated.

[0012] Preferably, the outlet diffuser and the shell form a communicating structure, and the shell forms a communicating structure with the process water pump unit through a backwash process water pipeline and a circulating process water pipeline.

[0013] The utility model is beneficial in that:

[0014] 1. The use of coarse and fine two-stage dust removal composite device improves the dust removal efficiency, the efficiency is ≥99.8%, meets the current environmental protection requirements, and can make the particle emission concentration ≤5mg / m 3; Save energy consumption and effectively reduce equipment resistance loss. Compared with similar products, equipment resistance loss is reduced by 500-1000pa; electricity consumption is saved by 30-50%;

[0015] 2. The circulating water solution is adopted to avoid the generation of secondary wastewater. The dust removal water is purified inside the equipment and recycled. After normal operation, there is no sewage discharged from the equipment, and no secondary sewage and wastewater are generated, which saves the cost of sewage treatment and saves floor space. The process water is circulated through the two-stage sewage and clean cascade box design, and there is no need to build a huge sewage pool, saving a lot of valuable floor space;

[0016] 3. Through the integrated design of dust removal, mist removal, smoke whitening, anti-blocking, mud and water separation, closed discharge of mud residue, anti-blocking, and full automation, the probability of failure caused by equipment operation and maintenance is greatly reduced, the long-term stable operation of the equipment is guaranteed, and the cost of equipment operation and maintenance is greatly reduced. There is no sewage carried outside the flue gas, and there is no visible white smoke plume. The whitening effect is achieved, clean and environmentally friendly, and the integrated design of the equipment greatly saves the investment and construction costs and reduces the financial burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0019] In the figure: 1. inlet diffuser; 2. outlet diffuser; 3. shell; 4. sewage tank; 5. clean water tank; 6. steel structure frame; 7. screen plate assembly; 8. water distributor; 9. impulse pipe box; 10. defogger; 11. slurry discharge valve; 12. slag discharge machine; 13. slag discharge pipe; 14. vibrator; 15. process water pump unit; 16. inlet process water pipeline; 17. external process water pipeline; 18. backwash process water pipeline; 19. circulating process water pipeline; 20. water seal overflow pipe / weir; 21. liquid level meter; 22. liquid level grid. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figure 1 A high-efficiency dust and mist remover is shown, comprising an inlet diffuser 1, a housing 3 is fixedly connected to the side of the inlet diffuser 1, a sieve plate assembly 7 is installed inside the inlet diffuser 1, a water distributor 8 is arranged on the side of the sieve plate assembly 7, a circulating process water pipeline 19 is fixedly connected to the side of the water distributor 8, and an external process water pipeline 17 is fixedly connected to the side of the circulating process water pipeline 19, a process water pump unit 15 is fixedly connected to the bottom end of the external process water pipeline 17, and the top of the process water pump unit 15 is fixedly connected to the inlet process water pipeline 16, and the inlet process The top of the process water pipeline 16 is fixedly connected to the clean water tank 5, the side of the clean water tank 5 is fixedly connected to the liquid level meter 21, and the top of the clean water tank 5 is fixedly connected to the water seal overflow pipe / weir 20, and the top of the water seal overflow pipe / weir 20 is fixedly connected to the sewage tank 4, the side of the sewage tank 4 is installed with an exciter 14, and the bottom of the sewage tank 4 is fixedly connected to the slurry discharge valve 11, the bottom of the slurry discharge valve 11 is installed with a slag discharge machine 12, and the side of the slag discharge machine 12 is fixedly connected to the slag discharge pipe 13, the top of the shell 3 is fixedly connected to the outlet diffuser 2, and the inside of the shell 3 is installed The demister 10 is provided with a backwash process water pipeline 18 fixedly connected to the side of the shell 3, a surge pipe box 9 is provided at the bottom of the demister 10, a liquid level grid plate 22 is fixedly connected to the bottom of the surge pipe box 9, and a steel structure frame 6 is fixedly connected to the bottom of the liquid level grid plate 22; the inlet diffuser 1 and the sewage tank 4 form a communication structure, and the sieve plate assembly 7 is arranged at equal intervals inside the inlet diffuser 1; the water distributor 8 forms a communication structure with the process water pump unit 15 through the circulating process water pipeline 19, and the water distributor 8 is arranged at equal intervals on the side of the circulating process water pipeline 19 ; The process water pump unit 15 includes a water pump, inlet and outlet pipelines, valves, pipe fittings, and instruments, and the sewage tank 4 is connected to the process water pump unit 15 through the water seal overflow pipe / weir 20, the clean water tank 5, and the inlet process water pipeline 16; the slag discharge pipe 13 is connected to the sewage tank 4 through the slag discharge machine 12 and the slurry discharge valve 11, and the sewage tank 4 is integrated with the steel structure frame 6; the outlet diffuser 2 is connected to the shell 3, and the shell 3 is connected to the process water pump unit 15 through the backwash process water pipeline 18 and the circulating process water pipeline 19.

[0023] Working principle: First, the flue gas to be treated enters the device through the inlet diffuser 1 for treatment. When the flue gas enters from the inlet diffuser 1, it first passes through the sieve plate assembly 7. At the same time, the process water pump unit 15 is turned on to extract the clean water in the clean water tank 5 through the inlet process water pipeline 16 and then spray it out through the circulating process water pipeline 19 and the water distributor 8. The flue gas containing dust contacts the sieve plate assembly 7 covered with a water film at high speed in countercurrent to perform pre-dust removal, and the air separation treatment is completed in this device. Under the impact of high-speed water mist, the problem of sieve plate blockage is solved at the same time. , and then fine dust removal is carried out after passing through the impulse tube bundle box. The impulse tube box 9 is surrounded by four sides and a top plate, and a perforated plate with elliptical holes is arranged obliquely inside. The number, specification and arrangement of the elliptical holes can be adjusted. A rigid round tube is connected below the elliptical holes. A steel plate with elliptical holes is arranged obliquely inside the impulse tube bundle box. The tube bundle is sealed and connected to the elliptical holes. The bottom of the tube bundle is immersed below the water surface of the sewage tank 4, so that the flue gas contacts, impinges and washes with water at high speed after passing through the tube bundle to complete fine dust removal. The flue gas after dust removal passes through the demisting device 10 and the outlet diffuser 2 to complete efficient flue gas demisting. Under the action of the induced draft fan, the wastewater is discharged to the atmosphere through the outlet flue and chimney, and the wastewater generated by the pre-dust removal flows into the sewage tank 4 at the bottom. The vibrator 14 is turned on to form a vibrating machine with the sewage tank 4 to gather the sediment inside the sewage tank 4 downward, the slag discharger 12 is turned on and then the slurry discharge valve 11 is opened. The slag discharger 12 works to discharge the mud formed by the bottom sediment through the slag discharge pipe 13, and the water left in the upper layer flows to the clean water tank 5 through the water seal overflow pipe / weir 20 for recycling.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A high-efficiency dust and mist remover, characterized in that: The invention comprises an inlet diffuser (1), wherein a housing (3) is fixedly connected to the side of the inlet diffuser (1), and a sieve plate assembly (7) is installed inside the inlet diffuser (1), a water distributor (8) is arranged on the side of the sieve plate assembly (7), and a circulating process water pipeline (19) is fixedly connected to the side of the water distributor (8), and an external process water pipeline (17) is fixedly connected to the side of the circulating process water pipeline (19), the bottom end of the external process water pipeline (17) is fixedly connected to a process water pump unit (15), and the top of the process water pump unit (15) is fixedly connected to an inlet process water pipeline (16), and the top of the inlet process water pipeline (16) is fixedly connected to a clean water tank (5), the side of the clean water tank (5) is fixedly connected to a liquid level meter (21), and the top of the clean water tank (5) is fixedly connected to a water seal overflow. The invention relates to a shell body (3) and a water seal overflow pipe / weir (20), and the top of the water seal overflow pipe / weir (20) is fixedly connected to a sewage tank (4), the side of the sewage tank (4) is equipped with an exciter (14), and the bottom of the sewage tank (4) is fixedly connected to a slurry discharge valve (11), the bottom of the slurry discharge valve (11) is equipped with a slag discharge machine (12), and the side of the slag discharge machine (12) is fixedly connected to a slag discharge pipe (13), the top of the shell body (3) is fixedly connected to an outlet diffuser (2), and a demisting device (10) is installed inside the shell body (3), and the side of the shell body (3) is fixedly connected to a backwash process water pipeline (18), the bottom of the demisting device (10) is provided with a shock pipe box (9), and the bottom of the shock pipe box (9) is fixedly connected to a liquid level grid (22), and the bottom of the liquid level grid (22) is fixedly connected to a steel structure frame (6).

2. A high-efficiency dust and mist remover according to claim 1, characterized in that: The inlet diffuser (1) and the sewage tank (4) form a communicating structure, and the sieve plate assemblies (7) are arranged at equal intervals inside the inlet diffuser (1).

3. The high-efficiency dust and mist remover according to claim 1, characterized in that: The water distributor (8) forms a communication structure with the process water pump unit (15) through the circulating process water pipeline (19), and the water distributors (8) are arranged at equal intervals on the side of the circulating process water pipeline (19).

4. The high-efficiency dust and mist remover according to claim 1, characterized in that: The process water pump unit (15) comprises a water pump, inlet and outlet pipelines, valves, pipe fittings, and instruments, and the sewage tank (4) is connected to the process water pump unit (15) via a water seal overflow pipe / weir (20), a clean water tank (5), and an inlet process water pipeline (16).

5. The high-efficiency dust and mist remover according to claim 1, characterized in that: The slag discharge pipe (13) forms a communication structure with the sewage tank (4) through the slag discharge machine (12) and the slurry discharge valve (11), and the sewage tank (4) and the steel structure frame (6) are integrally arranged.

6. The high-efficiency dust and mist remover according to claim 1, characterized in that: The outlet diffuser (2) and the shell (3) form a communication structure, and the shell (3) forms a communication structure with the process water pump unit (15) through a backwash process water pipeline (18) and a circulating process water pipeline (19).

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