TWM630138U - Gravity mixed flow device for waste gas scrubber - Google Patents

Abstract

The utility model relates to a gravity-type mixed flow device for an exhaust gas washing tower. A water pan is arranged in the water tank of the exhaust gas washing tower to receive the waste water after circulating cleaning of the exhaust gas washing tower. The bottom of the water pan is connected to a drain pipe in the water tank. The drain pipe There are many radial aeration pipes in layers from top to bottom around the perimeter; thus, when the amount of cleaned wastewater received by the water pan exceeds a certain pressure, the cleaned wastewater can enter the drain pipe, and the drain pipe The surrounding aeration pipes are sprayed out at different heights, different speeds and in various directions, so as to achieve sufficient disturbance of the wastewater after cleaning in the sink.

Description

Gravity mixed flow device for waste gas scrubber

The new type relates to a gravity-type mixed flow device without power, especially, it is set at the bottom of the waste gas washing tower, which can make the waste water after the waste gas washing tower circulate and wash to be disturbed by jet flow at different speeds and in various directions, so as to avoid sludge deposition . Gravity type mixed flow device of waste gas washing tower to improve the reuse rate of waste water after cleaning.

The waste gas produced by general industrial processes usually contains toxic substances and has a odor. If the waste gas is discharged into the air without proper treatment, it will cause air pollution and endanger people's lives. In order to reduce the air pollution caused by the exhaust gas and make the concentration of toxic substances in the exhaust gas lower than the limit specified by the regulations, the equipment commonly used in the industry is the wet scrubber.

Commonly used wet scrubbers, the principle of which is to remove substances such as acid and alkali gases in the exhaust gas through the contact between the scrubbing layer and the exhaust gas. The contact time and area of the scrubbing layer and the exhaust gas are important indicators of the overall removal efficiency. However, in a certain cost and construction area, the washing layer cannot be expanded without limit, and the initial exhaust gas will directly pass through the washing in a certain flow direction after entering the tower. The layer cannot be fully contacted with the Raschig rings in the scrubbing layer, which affects the efficiency of exhaust gas treatment to remove harmful substances. In addition, if the flow rate of the exhaust gas through the washing layer is too fast, the contact time between the exhaust gas and the Raschig ring in the washing layer will be too short, thereby reducing the washing efficiency.

In order to improve the lack of conventional wet scrubbers, the creator proposed a new patent case of "exhaust gas scrubber" No. M514880U in the early years. As shown in Figure 1, the exhaust gas scrubber includes a main body 110, a scrubbing layer 120, and a sprinkler 130. and the shielding structure 140 . The main body 110 has an intake port 110a, an exhaust port 110b, and a gas passage 110c, and the gas passage 110c communicates with the intake port 110a and the exhaust port 110b. The cleaning layer 120 is disposed in the gas channel 110c and below the exhaust port 110b , and the cleaning layer 120 includes a plurality of water absorbing members 122 . The sprinkler 130 is disposed above the washing layer 120 . The shielding structure 140 is fixed under the washing layer 120 and above the air inlet 110a, and the shielding structure 140 shields a part of the gas channel 110c. The sprinkler system 130 disposed above the washing layer 120 sprinkles water to the washing layer 120, so that the water absorbing member 122 of the washing layer 120 can absorb moisture. When the exhaust gas enters the gas channel 110c of the main body 110 through the air inlet 110a and passes through the washing layer 120, the exhaust gas contacts the water-absorbing member 122 containing water, and the impurities in the exhaust gas can be absorbed by the water-absorbing member 122, and the purified gas continues to flow to the water-absorbing member 122. The exhaust port 110b moves and is discharged through the exhaust port 110b. In addition, a water tank 150 is provided at the bottom of the main body 110, and a pump (not shown) is provided to draw the water in the water tank 150 to the sprinkler 130 to circulate and clean the exhaust gas.

However, according to the creator's research findings, the conventional exhaust gas scrubber The waste water after circulating cleaning will contain a lot of dust. When the dust in the waste water is deposited due to the high concentration, it will easily cause the nozzle to block and affect the washing effect of the waste gas. Therefore, the waste water after cleaning is mostly discarded and discharged at regular intervals. However, with the rapid development of science and technology and the rising awareness of environmental protection, if the waste water after cleaning is directly discarded and discharged, it will not only cost a lot of cleaning, but also easily cause industrial hazards and cause environmental pollution. Improvement, after many tests and improvements, finally the new gravity type mixed flow device of the waste gas washing tower is produced.

Therefore, the purpose of the present invention is to provide a gravity-type mixed-flow device for the waste gas washing tower, which reduces the dust concentration in the waste water after the cyclic cleaning of the waste gas washing tower with the regular and quantitative discharge, so as to maintain a certain cleanliness of the circulating cleaning water and continue. reuser.

According to the new gravity type mixed flow device of the waste gas washing tower, there is a water pan on the liquid surface of the water tank at the bottom of the waste gas washing tower, which can be used to receive the waste water after circulating cleaning. The bottom of the water pan is connected with a drain pipe, and the top of the drain pipe is connected There is a pressure relief valve, and there are many aeration pipes around the discharge pipe, so that after cleaning the waste water enters the discharge pipe, and then sprays out through most of the aeration pipes. This is the second purpose of the new model.

According to the gravity-type mixed flow device of the waste gas washing tower of the present invention, the aeration pipes are distributed around the discharge pipe, and are arranged in layers from top to bottom, and are arranged radially, so as to provide the waste water after cleaning from different layers The aeration pipe is sprayed out to improve the disturbance in the water and avoid sludge sedimentation, which is another purpose of this new model.

According to the new gravity type mixed flow device of the waste gas washing tower, the waste water can be fully disturbed after cleaning, and the dust in the waste water can be fully dispersed, so as to avoid the accumulation of dust and cause the dust concentration to be too high, and with the timing and quantitative water exchange mechanism , so that the circulating water in the water tank can maintain a certain degree of cleanliness, and it must be pumped to the upper end of the washing tower for reuse by the pump, which is another purpose of this new model.

As for the gravity-type mixed-flow device of the new type of waste gas washing tower, its detailed structure and specific embodiments can be fully understood by referring to the following description according to the accompanying drawings.

110: Subject

110a: Air intake

110b: exhaust port

110c: Gas channel

120: washing layer

122: Absorbent components

130: Sprinklers

140: Blocking Structure

150: Sink

200: Exhaust gas scrubber

210: Subject

220: Occlusion Structure

230: Washing Layer

240: Sprinklers

250: Air intake

260: exhaust port

300: Gravity mixed flow device

400: Raschig ring layer bulkhead

41: Sink

42: Drain pipe

43: Fixed plate

44: Water Tray

441: Funnel-shaped bottom

45: Pressure relief valve

500: Aeration tube group

510: Upper aeration pipe

520: Middle layer aeration pipe

530: Lower aeration pipe

51a, 51b, 51c, 51d; 52a, 52b, 52c, 52d; 53a, 53b, 53c, 53d: Aeration tube unit

600: Collecting tank

601: Pipeline

D: Diameter of the sink

H: height of the sink

L: The distance from the bottom of the sink to the Raschig ring shelf

P: water level line

W: the diameter of the water pan

Figure 1 is a schematic cross-sectional view of a conventional exhaust gas scrubber.

Figure 2 is a schematic diagram of the configuration of the new waste gas scrubber.

Figure 3 is a schematic plan view of the new gravity mixed flow device.

Figure 4 is a schematic plan view of the new type of aeration tube group.

Figure 5 is a schematic plan view of the upper aeration pipe, the middle aeration pipe and the lower aeration pipe of the new type of aeration pipe group.

Figure 6 is a schematic top view of the new aeration tube group.

Figure 7 is a diagram of the second embodiment of the new model.

The gravity-type mixed flow device of the new waste gas scrubbing tower, such as the first As shown in Figure 2, the exhaust gas washing tower 200 is located inside the main body 210, and is provided with a shielding structure 220, a washing layer 230 and a sprinkler 240 in sequence from bottom to top. At the lower end, the exhaust port 260 of the main body 210 is provided at the upper end. The gravity-type mixing device 300 is disposed at the bottom of the main body 210 .

Referring to FIG. 3, the gravity-type mixing device 300 is provided with a drain pipe 42 inside the water tank 41, and the bottom of the drain pipe 42 is fixed to the bottom surface of the water tank 41 by a fixing plate 43, so that it is Upright, aeration pipe groups 500 at different heights are arranged around the discharge pipe 42 , and the upper part of the discharge pipe 42 is a water pan 44 . The partition frame 400 is suspended. The inside of the water pan 44 is a funnel-shaped bottom surface 441 , and a pressure relief valve 45 is provided between the bottom of the water pan 44 and the drain pipe 42 . The pressure relief valve 45 can be opened when the amount of water received by the water pan 44 exceeds a certain pressure, so that the circulating and cleaned waste water received in the water pan 44 enters the drain pipe 42 and is then sprayed out from the aeration pipe group 500 .

As shown in the figure, the surface of the water pan 44 is smaller than the inner diameter of the water tank 41. Therefore, when the washed wastewater flows down from the top of the washing tower, some of the washed wastewater will flow directly into the water tank 41, and some of the washed wastewater will be The water pan 44 is received, the water pan 44 can float on the liquid surface, and about 1/3 of the bottom of the water pan 44 is immersed below the water level P of the water tank 41, and supports its weight by the buoyancy effect. When the water volume of the washed waste water received by the water pan 44 does not exceed a certain pressure, the pressure relief valve 45 is kept closed due to the buoyancy of the water surface being kept above the water level line P. when it undertakes When the water volume of the washed wastewater exceeds a certain pressure, the pressure relief valve 45 is forced to open, so that the circulating washed wastewater received by the water pan 44 can flow into the drain pipe 42 .

Please refer to Figures 4 and 5 at the same time, the aeration tube group 500 arranged on the outer periphery of the discharge pipe 42 is respectively provided with an upper layer aeration tube 510, a middle layer aeration tube 520 and a lower layer aeration tube 530. The aeration pipes 510, 520 and 530 on the first floor are respectively provided with four aeration pipe units 51a, 51b, 51c and 51d; 52a, 52b, 52c and 52d; 53a, 53b, 53c and 53d. Each aeration tube unit 51a, 51b, 51c, 51d of 530; 52a, 52b, 52c, 52d; 53a, 53b, 53c, and 53d are separated by 90 degrees from each other. The air pipe units are staggered by 30 degrees; the aeration pipe units of the middle layer aeration pipe 520 and the lower layer aeration pipe 530 are also staggered by 30 degrees. Moreover, the pipe diameter and length of the aeration pipe units of each layer of the aeration pipes 510, 520, and 530 are different. For example, the aeration pipe units 51a, 51b, 51c, and 51d of the upper aeration pipe 510 have the largest pipe diameter but the shortest length; Moderate, the length is also moderate; the aeration pipe units 53a, 53b, 53c, 53d of the lower aeration pipe 530 have the smallest pipe diameter but the longest length. Thereby, aeration pipe units 51a, 51b, 51c, 51d; 52a, 52b, 52c, 52d; 53a, 53b, 53c, 53d (as shown in FIG. 6) are provided at each angle of the drain pipe 42, and the cleaning After the waste water enters the drain pipe 42 , it can be sprayed out from different heights, different angles and different flow rates, so as to achieve sufficient disturbance to the washed waste water in the water tank 41 .

The gravity type mixed flow device of the new type of waste gas washing tower can be implemented as shown in Figure 3, so that the height H of the water tank 41 is half of the height L of the distance between the bottom of the water tank 41 and the Raschig ring layer partition frame 400; The diameter of 44 can be one-half of the diameter D of the water tank 41 . The aeration pipe units 51a, 51b, 51c, and 51d of the aeration pipe 510 on the upper layer of the aeration pipe group 500 have a pipe diameter of one and a half inches, and a pipe length of 1/5 of the diameter D of the water tank 41; The aeration pipe units 52a, 52b, 52c, and 52d of the air pipe 520 have a pipe diameter of 1 inch and a pipe length of 1/4 of the diameter D of the water tank 41; the aeration pipe units 53a, 53b, 53c, 53d, the pipe diameter is 0.5 inch, and the pipe length is 1/3 of the diameter D of the water tank 41; the relief pressure of the relief valve 45 can be set to be greater than 5kg/cm ² .

As shown in FIG. 7 , the new gravity type mixed flow device of the waste gas washing tower can be implemented by setting a water collecting tank 600 outside the waste gas washing tower 200 . The upper end is used to draw the overflow water from the water level above the water tank 41. After the inside of the water tank 41 is fully disturbed by the aeration tube group 500, the dust concentration in the water below the water level can be kept below the standard value, which can be extracted to the upper end of the washing tower for recycling. ; The disturbed dust in the water will float to the water surface, and flow to the collecting tank 600 with the overflow water through the pipeline 601 for collection and discharge.

The new gravity type mixed flow device of the waste gas washing tower can directly use the water volume of the circulating cleaning wastewater falling into the water pan 44 without additional power to fully disturb the circulating cleaning wastewater in the water tank 41, so as to make the circulation After cleaning, the dust content in the wastewater is fully dispersed, and the dust in the water is further dispersed. The concentration is kept below the standard value for recycling and reuse, thereby reducing costs and improving the efficiency of circular cleaning.

To sum up, the new gravity type mixed flow device for waste gas scrubbing tower has not been seen in any publications, and there is no similar product in the market, so there should be no doubts about its novelty. In addition, the unique features and functions of the new model are far from comparable to those of the conventional ones, so it is indeed more progressive than the conventional ones.

However, the above-mentioned are only the preferred embodiments of the present invention, which should not limit the scope of the present invention. It still falls within the scope of this new patent.

250: Air intake

300: Gravity mixed flow device

400: Raschig ring layer bulkhead

41: Sink

42: Drain pipe

43: Fixed plate

44: Water Tray

441: Funnel-shaped bottom

45: Pressure relief valve

500: Aeration tube group

P: water level line

H: height of the sink

L: The distance from the bottom of the sink to the Raschig ring shelf

D: Diameter of the sink

W: the diameter of the water pan

Claims (9)

A gravity mixed-flow device for an exhaust gas washing tower is provided with a washing layer and a sprinkler device inside the exhaust gas washing tower, so that the exhaust gas enters from the air inlet below the washing tower, is washed by the washing layer and the sprinkler device, and then flows out of the exhaust gas washing tower. It is characterized in that: the bottom of the exhaust gas washing tower is provided with a gravity-type mixed flow device, and the gravity-type mixed flow device is provided with a drain pipe inside the water tank, and the periphery of the drain pipe is provided with an aerator The air pipe group, the upper end of the drain pipe is connected to a water pan, the water pan is suspended by a Raschig ring layer frame, the bottom of which is communicated with the drain pipe, and a pressure relief valve is arranged therebetween, and the pressure relief valve can be installed in the water pan When the amount of water received exceeds a certain pressure, it is opened, so that the cleaned wastewater received in the water pan enters the discharge pipe, and then sprays out from the aeration pipe group. The gravity-type mixed flow device of the exhaust gas scrubbing tower according to the claim 1, wherein the Raschig ring layer frame is arranged above the air inlet of the exhaust gas scrubbing tower, and the water tank is arranged in the exhaust gas Below the inlet of the scrubber. According to the gravity type mixed flow device of the exhaust gas washing tower described in the second item of the patent application scope, the diameter of the surface of the water pan is smaller than the inner diameter of the water tank, so that when the washed wastewater flows down from the top of the washing tower, part of the washed wastewater It directly flows into the water tank, and part of the waste water after cleaning flows into the water pan. The gravity-type mixed-flow device for the exhaust gas scrubbing tower as described in item 3 of the patent application scope, wherein the water pan can float on the water surface of the water tank, thereby Its weight is supported by the buoyancy effect in the tank. The gravity-type mixed-flow device for the exhaust gas scrubbing tower as described in claim 1, wherein a water collecting tank is arranged outside the exhaust gas scrubbing tower, and the water collecting tank communicates with the pipeline to the uppermost end of the water tank to draw the Overflow water containing floating dust above the sink. The gravity-type mixed-flow device for an exhaust gas scrubbing tower according to any one of the claims 1 to 5 of the application scope, wherein the aeration tube group is respectively provided with an upper layer aeration tube, a middle layer aeration tube and a lower layer aeration tube, Each layer of aeration pipes is respectively provided with a plurality of aeration pipe units. The gravity-type mixed-flow device for the exhaust gas scrubbing tower as described in item 6 of the patent application scope, wherein the aeration pipe unit of the upper layer of the aeration pipe and the aeration pipe unit of the middle layer of the aeration pipe are staggered by 30 degrees ; The aeration tube units of the middle layer aeration tube and the lower layer aeration tube are staggered by 30 degrees. The gravity-type mixed flow device for the exhaust gas washing tower as described in claim 7, wherein the aeration pipe units of the upper aeration pipe, the middle aeration pipe and the lower aeration pipe are spaced 90 degrees apart from each other. The gravity-type mixed-flow device for the exhaust gas washing tower as described in item 8 of the patent application scope, wherein the aeration pipe unit of the upper aeration pipe has the largest pipe diameter and the shortest length; the aeration pipe of the middle layer aeration pipe The aeration pipe unit of the lower aeration pipe has the smallest pipe diameter and the longest length; thereby providing aeration pipe units at all angles of the discharge pipe, so that after the circulation cleaning After the waste water enters the drain pipe, it can be discharged from different heights, different Injection at the same angle and different flow rates can fully disturb the wastewater in the water tank.

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