WO2009079828A1 - A high-efficiency low energy consumption desulfurizing dust-removing device - Google Patents

Abstract

A high-efficiency low energy consumption desulfurizing dust-removing device comprises a depositing tank (30), a sludge-collecting tank (40), a water circulating pump (60), and a water-bath purifying tank (20). A spray room (3, 4) is provided in front of said water-bath purifying tank (20), on whose top is installed a water spray pipe or nozzle (13, 14). One or more sets of screen pipes (2) are provided on the bottom of the spray room (3, 4), each set consisting of a screen plate (5) distributed all over with multiple round holes (15) and multiple guide pipes (6) inserted one by one in these corresponding round holes (15). There is a radial through hole (16) in the pipe wall of each guide pipe (6). A water-bath overflow box (12) is suspended under each set of screen pipes (2) whose guide pipes (6) extend into the corresponding water-bath overflow box (12). The depositing tank (30) is connected to the bottom of the water-bath purifying tank (20) by means of flanges, the sludge-collecting tank (40) is connected to the bottom of the depositing tank (30) by means of flanges, and within the depositing tank (30) is provided a water dividing hopper that divides the depositing tank (30) into a sewage region (53) and a clear water region (52). The inlet of said water circulating pump (60)communicates with the clear water region (52) of the depositing tank (30) via a water inlet pipe (57).

Description

 High-efficiency and low-energy desulfurization and dust removal equipment

 The invention relates to an industrial waste gas treatment device, in particular to a desulfurization and dust removal device.

Background technique

 Desulfurization and dedusting equipment is widely used in various industrial and mining enterprises to filter and purify various industrial gases such as flue gas, harmful gases and dust gas.

 The existing desulfurization and dedusting equipment is composed of a venturi tube, an atomizer, a spray scrubber and a sedimentation tank, and the venturi tube is in the shape of a horn, and the upper, middle and lower sections are respectively a constricted section, a narrow throat section and a diffusion. The atomizer is installed in the upper part of the venturi tube, the spray scrubber is arranged in the middle of the venturi tube, the sedimentation tank is arranged at the bottom of the venturi tube, and the exhaust gas is pumped by the suction fan from the top of the venturi tube. Entering, in the constricted section of the venturi, the velocity of the airflow increases greatly as the cross-section shrinks. This high-speed airflow impinges on the mist sprayed from the atomizer, and reaches the maximum velocity when reaching the narrow throat. Value, gas, liquid two-phase collision contact, the exhaust gas is mixed with the water mist, and then enters the diffusion section of the venturi tube, the flow rate is gradually reduced, and finally enters the sedimentation tank to settle. The water bath process of the desulfurization and dust removal equipment is completed in the venturi tube. The venturi tube is a single tubular body with a large inner diameter, which is the only passage for the exhaust water to carry out the water bath. Under the action of the induced draft fan and gravity, the exhaust gas enters the text at a very high speed. In the tube, the stroke time in the venturi tube is short, and the fine particles and harmful substances in the exhaust gas are often too late to be in full contact with the water mist, collision, impact, fusion, neutralization, and have been discharged from the bottom of the venturi tube. Therefore, the water bath is incomplete, the purification effect is poor, and the dust removal efficiency is low. The venturi tube has a large height, a large weight, is inconvenient to install and disassemble, and is difficult to transport. It must be used in conjunction with a large sedimentation tank, which brings great inconvenience to the construction. The sewage in the sedimentation tank cannot be recycled, and the water consumption is small. Large, large amount of sewage, serious secondary pollution.

Summary of the invention

 In order to overcome the deficiencies of the prior art described above, the object of the present invention is to provide a high-efficiency and low-energy desulfurization and dedusting device, which utilizes the impact principle to perform water bath dust removal and desulfurization, and adopts a modular structure as a whole, and is convenient for disassembly, transportation, maintenance, and occupation. Small area, water saving, power saving, wide application range.

In order to achieve the above object, the present invention adopts the following technical solutions: A high-efficiency low-energy desulfurization and dedusting device, including a sedimentation tank, a mud collecting box, a circulating water pump and a water bath purifying tank, wherein: the water bath purifying tank is provided with a spray Room, shower room in the water bath purification tank In the front part, the shower room is connected with the air inlet of the front end of the water bath purification box, and the top of the spray chamber is provided with a water spray pipe or a spray head, and one or more sets of screen tubes are arranged at the bottom of the spray chamber, and each set of screens is composed of The sieve plate is composed of a plurality of flow guiding tubes, and the sieve plate is covered with round holes, and the guiding tubes are correspondingly disposed in the circular holes, and a radial direction is formed on the lower wall of each of the guiding tubes Through holes, a water bath overflow box is arranged below each group of sieve tubes, and the draft tubes in each group of screens extend into the corresponding water bath overflow box, and the bottom of the water bath overflow box is mounted with a bracket The bracket is fixed on the side wall of the tank, and the sediment box is connected to the bottom of the water bath purifying tank through a flange, and the mud collecting box is connected to the bottom of the sediment box through a flange, and the sediment box is provided with a branch The water bucket, the water dividing bucket divides the sedimentation tank into a sewage area and a clean water area, and the inlet of the circulating water pump communicates with the clear water area of the sedimentation tank through the inlet water pipe.

 A partition is disposed at a rear of the shower chamber in the water bath purifying tank, and a centrifugal unpowered water trap is installed at a rear portion of the partition. The water bath purification tanks may be one, two or more. When the water bath purification tank is two, the two water bath purification tanks are arranged in a stack. When there are a plurality of water bath purification tanks, these water bath purification tanks are arranged in a stack.

 The sedimentation box is in the shape of a large apex with a large top and a small bottom. The water dividing hopper is composed of a left baffle, a right baffle and a rear baffle. The left and right baffles are respectively installed in the left of the sedimentation tank. On the right side, the left and right baffles are arranged symmetrically in an inverted "eight" shape, the upper part of the left baffle has a hinged upper leftward fold, and the upper part of the right baffle has a conjoined upper rightward Folding edge, the upper edge of the left baffle and the right baffle are respectively welded on the top edge of the left and right side walls of the box body, and the rear blocking plate is bridged between the rear end faces of the left and right baffles, and the rear blockage The two end faces of the plate are respectively connected to the left and right side walls of the box body, and the upper sides of the rear blocking plate are opened with a gap corresponding to the upper edge of the left and right baffle flaps.

 The centrifugal unpowered water dehydrator is composed of a casing, a central shaft and an impeller, and upper and lower ends of the central shaft are respectively connected to the casing through upper and lower support rods, and the impeller is composed of a plurality of blades and a hub. Each blade is circumferentially distributed on the hub, and the hub of the impeller is connected to the central shaft through a bearing, and a collecting manifold is suspended below the cylindrical casing, and the top of the collecting manifold is between the top of the casing and the bottom of the casing There is a gap, and the collecting manifold is connected to the cylindrical casing through a boom. The corner of the collecting manifold is provided with a water leakage hole, and a drainage pipe is connected below the leakage hole. The bottom of the central shaft is provided with a conical deflector cap.

The bottom of the shower room is provided with a horizontal fence and a longitudinal fence. The horizontal fence and the vertical fence are arranged in a cross arrangement to form a plurality of troughs for accommodating the screen tubes. The groups of screen tubes are installed in the slots one by one. Grid. The bottom of the lateral fence and the longitudinal fence has a flange for supporting the screen. The invention has the following positive beneficial effects:

 The device performs water bath dust removal and desulfurization through a screen tube: under the negative pressure of the induced draft fan, the exhaust gas enters the spray chamber at a certain speed, is washed by the water spray pipe or the nozzle water mist, and is mixed with the water mist, and then It falls into each trough and is dispersed into the diversion tube of each group of screen tubes. The bottom of the diversion tube is submerged under the water surface of the water bath overflow box, and the exhaust gas is ejected at high speed by radial through holes on the side wall of the draft tube. In the situation of intense agitation, under the impact and inertia of the airflow, the exhaust gas and the water collide with each other, and the fine particles and harmful substances in the exhaust gas diffuse, diffuse and neutralize in the water, and the particulate matter is captured by the water to achieve desulfurization and dust removal. the goal of. After the water bath, fine particles and harmful substances in the exhaust gas are removed, and the purified gas is bypassed from the bottom of the separator by the suction of the induced draft fan, and is removed by a centrifugal unpowered dehydrator to remove moisture. The sewage overflowing from the overflow tank of the water bath enters the sedimentation tank under the action of gravity. After sedimentation in the sedimentation tank, the particulate matter in the sewage enters the sludge tank and is periodically discharged through the thick slurry pump.

 The device is small in size, light in weight, convenient in installation and disassembly, easy to transport, easy to maintain, wide in application range, and dust removal efficiency of up to 99.5%.

 A water dividing bucket is arranged in the sedimentation tank, and the water dividing bucket divides the sedimentation tank into a clear water area and a sewage area, and the sewage overflows into the water dividing bucket of the sedimentation tank, and the water dividing bucket acts as a forced sedimentation, and the sludge is deposited on the mud collecting box. At the bottom, the cleaned water after sedimentation can enter the clear water area of the sedimentation tank from the bottom of the water inlet or the water distribution bucket, and is pumped out into the water spray pipe by the circulating water pump for recycling, saving water resources. Adding desulfurizer to the water can achieve the effect of desulfurization and dust removal. When the sludge in the collecting tank is deposited to a certain height, the level detector sends a signal to start the slurry pump to remove the sludge.

Centrifugal non-powered dehydrator, small size, saves equipment space, its only moving part is the impeller, the impeller has no external driving device, the impeller rotates under the action of airflow, produces vortex effect, has little resistance to gas, and makes gas flow Smooth, as long as equipped with a low-power induced draft fan, the dehydrated gas can be taken out, which is very energy-saving. The gas flows at a high speed under the negative pressure of the induced draft fan, flushing the blades of the impeller, and the moisture in the gas condenses into small water droplets on the blade. The faster the airflow speed, the higher the impeller speed, the greater the centrifugal force generated, under the action of centrifugal force. The water droplets on the blade are thrown onto the inner wall of the casing. After the water droplets on the blade are drained away in time, the water droplets in the gas can be further contained and extracted, thereby quickly and effectively removing the moisture in the gas. The inner surface of the collector manifold acts to concentrate the airflow, reduce the passage area, increase the airflow speed, and increase the impeller speed. The outer surface of the collecting manifold covers the role of collecting water droplets, and the small water droplets on the inner wall of the casing accumulate into large water. After the drop, it falls on the outer surface of the collector manifold by gravity, and the large water droplets merge into the water stream, and enter the sedimentation tank through the drainage tubes at the four corners of the collector manifold, which will not collide with the rising gas, and the dehydration effect it is good. The bottom end of the drainage tube extends into the liquid level of the sedimentation tank. Therefore, the water in the drainage tube is not subjected to the negative pressure of the induced draft fan, and the drop is smooth.

BRIEF abstract

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic external view of an embodiment of the present invention.

 Figure 2 is a schematic view of the internal structure of Figure 1.

 Figure 3 is an enlarged view of the water bath purifying tank of Figure 2.

 Figure 4 is an enlarged view of the screen set of Figure 3.

 Figure 5 is a schematic view showing the structure of a group of screen tubes of Figure 4.

 Figure 6 is an exploded view of Figure 5.

 Figure 7 is an enlarged view of another embodiment of the draft tube of the present invention.

 Figure 8 is a cross-sectional view of Figure 7.

 Figure 9 is a cross-sectional view of Figure 3.

 Figure 10 is a partial enlarged view of the screen set of Figure 9.

 Figure 1 is a schematic view of the structure of the sedimentation tank of Figure 2.

 Figure 12 is a half cross-sectional view of Figure 11.

 Figure 13 is a schematic view showing the structure of the water dividing bucket of Figure 11.

 Figure 14 is a rear elevational view of Figure 11.

 Figure 15 is a half cross-sectional view of Figure 14.

 Figure 16 is a schematic view showing the structure of the water dividing bucket of Figure 14.

 Figure 17 is a schematic view showing the structure of the centrifugal type non-powered water dehydrator of Figure 2

 Figure 18 is a bottom view of Figure 17 .

 Figure 19 is a plan view of Figure 17 .

 Figure 20 is an enlarged cross-sectional view taken along line A - A of Figure 19;

 Figure 21 is a schematic view showing the state of use of the embodiment shown in Figure 1.

 Figure 22 is a schematic view showing the structure of another embodiment of the present invention.

Embodiment of the present invention

Part number

1 exhaust port, 2 screens, 3 shower rooms, 4 shower rooms, 5 sieve plates, 6 draft tubes,

7 air inlets, 8 horizontal fences, 9 vertical fences, 10 top covers, 1 1 bracket

12 water bath overflow box, 13 water spray pipe or nozzle, 14 water spray pipe or nozzle, 15 round holes,

16 through holes, 17 slots, 18 flanges, 19 flanges, 20 water bath purifiers, 21 housing, 22 center shaft, 23 impeller, 24 upper support rod, 25 lower support rod, 26 nut, 27 nut, 28 blades, 29 hub, 30 sedimentation tank, 31 manifold manifold, 32 boom, 33 leak hole , 34 splitter caps, 35 bearings, 36 bearings, 37 positioning bosses, 38 upper end caps, 39 lower end caps, 40 sets of mud boxes, 41 cabinets, 42 left flaps, 43 right flaps,

44 rear blocking plate, 45 fold edge, 46 fold edge, 47 water flow channel, 48 water flow channel, 49 gap, 50 thick slurry pump, 51 gap, 52 clear water area, 53 sewage area, 54 partition,

55 drainage tube, 56 hopper, 57 inlet pipe, 58 drain pipe,

59 centrifugal unpowered water dehydrator, 60 circulating water pump.

 Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 9, the present invention is a high-efficiency low-energy desulfurization and dedusting device, which comprises a sedimentation tank 30, a mud collecting box 40, a circulating water pump 60 and a water bath purifying tank 20. The water bath cleaning tank 20 may be one or two or more. In the present embodiment, the water bath purification tank 20 is one. A top cover 10 is mounted on the top of the water bath purification tank 20, and the top cover 10 is provided with an exhaust port 1 through which the exhaust port 1 is connected.

 The sedimentation tank 30 is connected below the water bath purification tank 20, and the mud tank 40 is connected below the sediment tank 30, and the slurry pump 40 is installed at the outlet end of the mud tank 40.

 Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 9, FIG. 10, a shower chamber is disposed in the water bath purifying tank 20, and the shower chamber is located at the front of the water bath purifying tank 20, In the embodiment, there are two shower chambers, and the two shower chambers 3, 4 are arranged in an up and down orientation.

 The shower chambers 3, 4 are in communication with the air inlet 7 at the front end of the water bath cleaning tank 20. The top of the shower room 3 is provided with a water spray pipe or a spray head 13, and the top of the spray chamber 4 is provided with a water spray pipe or a spray head 14. The bottoms of the shower rooms 3, 4 are provided with screens 2, which may be one set or two or more sets. In this embodiment, there are six groups of screen tubes 2, each group of screen tubes 2 is composed of a sieve plate 5 and a plurality of flow guiding tubes 6, the sieve plate 5 is covered with a circular hole 15, and the guiding tube 6 is correspondingly inserted. In the circular holes 15, a radial through hole 16 is formed in the wall of the lower portion of each of the draft tubes 6, and a water bath overflow box 12 is disposed below each of the screen tubes 2, and the bottom of the water bath overflow box 12 is provided. The bracket 1 is mounted, and the bracket 1 1 is fixed to the side wall of the casing 1, and the draft tube 6 extends into the water overflow box 12.

 Referring to FIG. 4, FIG. 5 and FIG. 6, in a preferred embodiment, the bottoms of the shower rooms 3, 4 are provided with a lateral fence 8 and a longitudinal fence 9, and the horizontal fences 8 and the longitudinal fences 9 are arranged in a cross arrangement to form a plurality of In the trough 17 for accommodating the screen 2, in the present embodiment, there are six slots 17, and six sets of screens 2 - one correspondingly installed in these slots 17.

Referring to Figure 6, the bottom of the horizontal fence 8 has a connected flange 18, and the bottom of the longitudinal fence 9 has a connected flange 19, and the four peripheral edges of the screen 5 are supported by the flanges 18, 19. Referring to FIG. 4, FIG. 5, FIG. 6, and FIG. 10, the horizontal fence 8 and the vertical fence 9 have a dome shape at the top to separate the water flow, so that the water flow mixed with the exhaust gas can be quickly separated, and the tanks are uniformly divided into the slots. Within the grid 17. Referring to FIG. 7 and FIG. 8, the bottom of the draft tube 6 may be opened with a circular through hole 16 or two through holes 16 as shown in FIG. 7 and FIG. 8. The bottom of the draft tube 6 may also be opened. Multi-turn through hole.

 Referring to Fig. 2, Fig. 3, Fig. 9, and Fig. 21, the inside of the water bath purifying tank 20 is provided with a partition plate at the rear of the shower chambers 3, 4, and the rear space of the partition plate 54 forms a dehydrating chamber. A centrifugal unpowered dehydrator 59 is installed in the deionization chamber. Referring to Figure 1 1 , Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, the sedimentation tank 30 has a prismatic shape with a large top opening and a small bottom. A water dividing bucket is disposed in the sedimentation tank 30. The water dividing bucket is composed of a left baffle 42, a right baffle 43, and a rear blocking plate 44. The left and right baffles 42, 43 are respectively installed on the left and right sides of the casing 41 respectively. On the side, the left and right baffles 42, 43 are arranged symmetrically in an inverted "eight" shape, and the upper portion of the left baffle 42 has a hinged upper left flange 45, and the upper portion of the right baffle 43 has a connected body. Folding edge 46 on the upper right. The flange 45 at the upper portion of the left baffle is welded to the top edge of the left side wall of the casing 41. The flange 46 of the upper portion of the right baffle is welded to the top edge of the right side wall of the casing 41.

 Referring to Fig. 15, the function of the flange 45 is to leave a gap between the left flap 42 and the left side wall of the casing 41 to form a water flow passage 47. The function of the flange 46 is to leave a gap between the right flap 43 and the right side wall of the casing 41 to form a water flow passage 48. The rear blocking plate 44 is bridged between the rear end faces of the left and right baffles 42, 43, and the end faces of the rear blocking plate 44 are respectively connected to the left and right side walls of the casing 41. A gap 49 is formed at a position corresponding to the upper portion of the rear baffle 44 and the upper baffle 45 of the left baffle plate. The upper portion of the rear blocking plate 44 is provided with a slit 5 1 at a position corresponding to the upper flange 46 of the right baffle. The gap 49 is the water outlet at the top of the water flow passage 47. The gap 51 is the water outlet at the top of the water flow passage 48. The function of the water dividing bucket is to divide the inside of the tank 41 into two areas, the area outside the water dividing bucket is the clear water area 52, and the area inside the water dividing bucket is the sewage area 53.

 Referring to Fig. 21, the outside of the settling tank 30 is provided with a circulating water pump 60. The inlet of the circulating water pump 60 is in communication with the inlet pipe 57. The inlet pipe 57 communicates with the upper portion of the settling tank 30, and the nozzle of the inlet pipe 57 is disposed in the clean water area 52. The outlet of the circulating water pump 60 communicates with the sprinkler pipes or nozzles 13, 14 in the upper and lower shower chambers through the drain pipe 58.

 Referring to Figures 17, 18, 19 and 20, the centrifugal unpowered water dehydrator 59 has a cylindrical housing 21 in which a central shaft 22 and an impeller 23 are disposed, on the upper side of the central shaft 22, The lower ends are connected to the housing 21 via upper and lower support bars 24, 25, respectively.

There are three upper support rods 24, and the three upper support rods 24 are evenly distributed, each upper branch The inner end and the outer end of the strut 24 are provided with threaded heads, and the inner end of each upper support rod 24 is screwed with the threaded hole of the upper portion of the middle shaft 22, and the outer end of each upper support rod 24 is connected to the housing by a nut 26. The upper part of the 21 outer wall. There are three lower support bars 25, the three lower support bars 25 are circumferentially evenly distributed, and the inner end and the outer end of each lower support bar 25 are provided with threaded heads, and the inner end of each lower support bar 25 and the lower part of the middle shaft 22 The threaded holes are screwed, and the outer end of each of the lower support rods 25 is connected to the lower portion of the outer wall of the casing 21 by a nut 27.

 A vapor collecting manifold 3 1 is suspended below the casing 21. The upper port of the collecting manifold 3 1 is small, the lower port is large, the upper port is circular, and the lower port is square. A gap is left between the top of the collecting manifold 3 1 and the bottom of the casing 21, and the collecting manifold 3 1 is connected to the cylindrical casing 21 via a boom 32, and the corner of the collecting manifold 3 1 is provided with Leakage hole 33. A conical shunt cap 34 is attached to the bottom of the center shaft 22. Referring to Figures 19 and 20, the impeller 23 is composed of a hub 29 and six blades 28, each of which is circumferentially distributed on the hub 29, and the hub 29 of the impeller 23 is coupled to the central shaft 22 via two bearings 35, 36. . The central shaft 22 is provided with positioning bosses 37. The two bearings 35, 36 are respectively disposed on the upper and lower sides of the positioning boss 37, and the hub 29 of the impeller is sleeved on the outer side of the two bearings 35, 36, and the hub 29 Upper and lower end caps 38, 39 are respectively connected to the upper and lower ends. The upper and lower end caps 38, 39 act as axial stops for the two bearings 35, 36.

 Please refer to Figure 21, the equipment is used for water bath dust removal and desulfurization through the screen: Under the negative pressure of the induced draft fan, the exhaust gas enters the shower chambers 3 and 4 from the air inlet 7 at a certain speed, and is subjected to the water spray pipe or nozzle. 13, 14 water mist scouring, mixed with water mist, then fall into each trough 17, dispersed into the diversion tube 6 of each group of screens 2, the bottom of the diversion tube 6 is submerged in the water bath overflow Under the water surface of the casing 12, the exhaust gas is ejected at a high speed by the radial through holes 16 on the side wall of the draft tube 6. Since each of the water bath overflow boxes 12 has a plurality of draft tubes 6, the respective draft tubes 6 are simultaneously high speed. The exhaust gas is ejected to form a situation of intense agitation. Under the action of the impact and inertia of the airflow, the exhaust gas collides with the water, and the fine particles and harmful substances in the exhaust gas diffuse, diffuse and neutralize in the water, and the particulate matter is trapped. The purpose of desulfurization and dust removal. After the water bath overflow box 12 water bath, fine particles and harmful substances in the exhaust gas are removed, and the purified gas bypasses the separator from the bottom of the separator 54 and is discharged by the centrifugal type dynamic dehydrator 59 to remove moisture.

The impeller 23 of the centrifugal unpowered dehydrator 59 has no external driving device, and the impeller 23 rotates under the action of the air flow to generate a vortex effect, and the resistance to the gas is small, so that the gas flows smoothly, as long as a small power induced draft fan can be used. The dehydrated gas is extracted, which is very energy efficient. The gas flows at high speed under the action of the induced draft fan, flushing the blades 28 of the impeller, gas The water in the condensed water droplets on the blade 28, the faster the airflow speed, the higher the rotational speed of the impeller 23, the greater the centrifugal force generated, and the water droplets on the blade 28 are thrown onto the inner wall of the casing 21 by the centrifugal force. After the water droplets on the blade 28 are drained in time, the water droplets in the gas can be further contained and extracted, thereby quickly and effectively removing moisture from the gas.

 The inner surface of the collector manifold 31 serves to concentrate the airflow, reduce the passage area, increase the air velocity, and increase the rotational speed of the impeller 23. The outer surface of the collecting manifold 31 serves to concentrate the water droplets. When the small water droplets on the inner wall of the casing 21 accumulate into large water droplets, they fall on the outer surface of the collecting manifold 31 by gravity, and the large water droplets merge into the water flow. The drainage tube 55 passing through the four corners of the collector manifold 31 enters the sedimentation tank 30, does not collide with the rising gas, and has a good dewatering effect. The bottom end of the draft tube 55 extends into the liquid level of the settling tank 30, so that the water in the draft tube 55 is not subjected to the negative pressure of the draft fan and falls smoothly.

 After the sewage in the water overflow box 12 overflows, it completely falls into the water dividing hopper of the sedimentation tank 30 under the action of gravity, and is blocked by the blocking plate 44 after the water dividing bucket, and the sewage does not directly enter the clear water area 52, but It can only be precipitated in the sewage area 53. After the sedimentation, most of the clean water can overflow from the bottom of the water dipper and enter the clear water area 52. During the sedimentation process, another large part of the water is bypassed to the left of the water bucket. The right baffles 42, 43 enter the water flow passages 47 and 48, and the fresh water having a high water level inside the water flow passages 47, 48 can enter the clean water region 52 from the gaps 49, 51. The water dividing bucket forms a bypass water path on both sides and the bottom in the sedimentation tank 30, and the internal area of the water distribution bucket is a sewage area 53, and the sewage particles are deposited into the set in the process of entering the clean water area 52 through the bypass waterway. In the mud box 40. Therefore, the water dividing bucket acts as a forced sedimentation. After the watershed is settled, the sludge enters the mud collecting box 40. When the sludge rises to a certain height, the level detector sends a signal to start the rich paddle pump 50. The sludge is drained away. The high-efficiency low-energy desulfurization and dust removal device of the present invention may have two or more water bath purification tanks 20, and each water bath purification tank is arranged in a stack. In the embodiment shown in Fig. 22, there are two water bath cleaning tanks 20, and the two water bath purifying tanks 20 are stacked together, wherein the top of the water bath purifying tank 20 is placed with a top cover 10 on the top cover 10 An exhaust port 1 is provided, and the exhaust port 1 passes through a duct and an induced draft fan. The sedimentation tank 30 is connected below the water bath purification tank 20, which is located below the sediment tank 30, and the slurry pump 40 is installed at the outlet end of the mud tank 40. The centrifugal unpowered water cooler 59 can be installed close to the exhaust port 1. A hopper 56 may be installed on the side wall of the water bath purifying tank 20. The bottom end of the hopper 56 is provided with an electric valve, and the desulfurizing agent is contained in the hopper 56. When desulfurization is required, the electric valve is opened, and desulfurization is added to the settling tank 30. The desulfurization and dust removal of the exhaust gas can be achieved by the action of the circulating water pump 60.

Claims

Claim 1. A high-efficiency and low-energy desulfurization and dedusting equipment, comprising a sedimentation tank, a mud collecting box, a circulating water pump and a water bath purifying tank, characterized in that:  The water bath purification tank is provided with a shower chamber, the spray chamber is located at the front of the water bath purification tank, and the spray chamber is connected with the air inlet of the front end of the water bath purification tank, and a spray pipe or a spray head is arranged at the top of the spray chamber. The bottom of the shower room is provided with one or more sets of screen tubes, each set of screen tubes is composed of a sieve plate and a plurality of guide tubes, and the sieve plates are covered with round holes, and the guide tubes are correspondingly placed at one In the circular holes, radial holes are formed in the lower wall of each of the draft tubes, and a water bath overflow box is arranged below each of the screen tubes, and the draft tubes in each group of screens are extended into the In the corresponding water bath overflow box, a bracket is mounted on the bottom of the water overflow box, and the bracket is fixed on the side wall of the tank, and the sediment box is connected to the bottom of the water bath purifying tank through a flange, the mud collecting body The tank is connected to the bottom of the sedimentation tank by a flange, and the water tank is arranged in the sedimentation tank, and the water splitting bucket divides the sedimentation tank into a sewage area and a clean water area, and the inlet of the circulating water pump passes through the water of the water inlet pipe and the sedimentation tank Regional connectivity.  2. The high-efficiency low-energy desulfurization and dedusting apparatus according to claim 1, wherein: a partition plate is disposed behind the shower chamber in the water bath purifying tank, and a centrifugal type non-power dehydrator is installed at a rear portion of the partition plate.  3. The high-efficiency low-energy desulfurization and dust removal apparatus according to claim 1, wherein: the water bath purification tank has one.  4. The high-efficiency low-energy desulfurization and dust removal device according to claim 1, wherein: the water bath purification tank has two, and the two water bath purification tanks are arranged in a stack.  5. The high-efficiency low-energy desulfurization and dedusting apparatus according to claim 1, wherein: the water bath purification tank has a plurality of, and the water bath purification tanks are arranged in a stack. 6. The high-efficiency low-energy desulfurization and dust removal device according to claim 1, wherein: the sedimentation tank has a shape of a large apex with a large top and a small bottom, and the water hopper is composed of a left baffle and a right baffle. The rear blocking plate is composed of the left and right baffles respectively installed on the left and right sides of the sedimentation box, and the left and right baffles are arranged symmetrically in an inverted "eight" shape, and the upper part of the left baffle has a conjoined To the upper left edge, the upper part of the right baffle has a connected upper right upper flange, and the left baffle and the upper baffle upper flange are respectively welded on the top edges of the left and right side walls of the box The rear blocking plate is bridged between the rear end faces of the left and right baffles, and the two end faces of the rear blocking plate are respectively connected to the left and right side walls of the box body, and the upper sides of the rear blocking plate are opposite to the left side A gap is formed at a position corresponding to the upper flange of the right baffle. 7. The high-efficiency low-energy desulfurization and dedusting apparatus according to claim 2, wherein: the centrifugal unpowered dehydrator is composed of a casing, a central shaft, and an impeller, and upper and lower ends of the central shaft are respectively passed through The lower support rod is connected to the housing. The impeller is composed of a plurality of blades and a hub. Each blade is circumferentially distributed on the hub. The hub of the impeller is connected to the central shaft through a bearing, and is suspended under the cylindrical housing. a gas collecting manifold is disposed, and a gap is left between the top of the collecting manifold and the bottom of the casing, and the collecting manifold is connected to the cylindrical casing through a boom, and the corner of the collecting manifold is provided with A leaking hole is connected to the leaking hole below the leaking hole.  8. The high-efficiency low-energy desulfurization and dust removal device according to claim 7, wherein: the bottom of the central shaft is provided with a conical guide cap.  9. The high-efficiency low-energy desulfurization and dust removal device according to claim 1, wherein: the bottom of the shower room is provided with a horizontal fence and a vertical fence, and the horizontal fence and the vertical fence are arranged in a cross arrangement to form a plurality of The troughs of the screen tubes are installed in the troughs in a one-to-one correspondence.  10. The high-efficiency low-energy desulfurization and dust removal apparatus according to claim 9, wherein: the lateral fence and the bottom of the longitudinal fence have a flange for supporting the sieve plate.