JP4197779B2 - Wet exhaust gas treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wet exhaust gas treatment apparatus.
[0002]
[Prior art]
As a typical example of this type of conventional wet exhaust gas treatment apparatus, the one shown in FIG. 26 is well known and will be described. It has a sideways filler portion 52 arranged inside the casing 51, and is divided into an upper casing 53 and a lower casing 54, an air supply port 56 is provided in the lower casing 54, and an exhaust port 57 is provided in the upper casing 53, respectively. Further, a water supply port 58 is provided in the upper casing wall, and a drain port 59 is provided in the lower casing 54, so that the gas introduced from the air supply port 56 and the cleaning water introduced from the water supply port 58 are passed through the filler 52. Through-holes are provided.
[0003]
In this arrangement, the exhaust gas from the air supply port 56 of the lower casing 54 is the air supply to the lower casing 54, rises through holes of the filling unit 52, is exhausted from the exhaust port 57 of the upper casing 53. Meanwhile, the cleaning water supplied from the water supply port 58 of the upper casing 53 spreads on the filler portion 52 and flows down through the through hole 57, and is discharged from the drain port 59 of the lower casing 54 in this way. The exhaust gas and the cleaning water are in gas-liquid contact with each other in the filler portion 52, and the exhaust gas is processed.
[0004]
[Problems to be solved by the invention]
The exhaust gas is treated by contacting the exhaust gas and the washing water when moving as described above. However, since both of them are in contact with each other as described above, a single unit is required for gas-liquid contact. In the case where only the filler portion is provided, the contact time is short, so that there is a problem that the treatment efficiency is low and it is difficult to effectively perform the exhaust gas treatment. Therefore, in order to solve such a problem, it is necessary to provide a plurality of filler parts as shown in the figure, so that the entire apparatus becomes large and expensive, and a wide installation place is required. There is a problem.
[0005]
Accordingly, the object of the present invention is to solve the problems of the conventional wet exhaust gas treatment apparatus as described above, provide a plurality of gas-liquid contact portions, and not to increase the size of the entire apparatus, and to provide at low cost. In addition to the above, it is an object of the present invention to provide a wet exhaust gas treatment device that does not require a wide installation place and that can perform exhaust gas treatment with high processing efficiency and effectively.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention arranges one horizontal partition plate inside a cubic casing and partitions it into an upper casing and a lower casing. The air supply port is provided with an exhaust port in the upper casing, the horizontal partition plate is provided with a number of parallel slits that allow the gas introduced from the air supply port to pass through as an inclined flow, and the water supply port and the upper In the wet exhaust gas treatment apparatus having a drain outlet on the peripheral wall, a plurality of vertical partition plates are provided in parallel inside the upper casing, and the vertical partition plates have upper end edges below the top wall of the upper casing, and A first vertical partition plate that extends to above the drain port, and a lower end edge is positioned higher than the horizontal partition plate, an upper end edge is positioned lower than the drain port, and a lower end edge is on the horizontal partition plate position And has a second vertical partition plates are arranged alternately, said vertical partition top and between the top wall of the upper casing to flow by collecting the gas which rises adjacent partition plates to the exhaust port of the A ventilation space is formed, and a photocatalytic material film made of titanium oxide is provided on the upper and lower surfaces and slit surfaces of the horizontal partition plate, the inner peripheral surface of the upper and lower casings, and the bottom surface of the lower casing, and ultraviolet rays are formed outside the upper and lower casings. A light is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In each embodiment of the present invention shown in the drawings, common portions are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.
[0010]
In the first embodiment shown in FIGS. 1 and 2, one horizontal partition plate 2 is disposed inside a cylindrical casing 1, divided into an upper casing 3 and a lower casing 4, and supplied to the lower casing 4. A vent 6 is provided with an exhaust port 7 in the upper casing 3, and concentric slits that are inclined toward a large number of outer peripheral surfaces that allow the gas introduced from the air supply port 6 to pass through the horizontal partition plate 2 as an inclined flow. 8, a water supply port 9 and a drain port 10 are provided in the upper and lower peripheral walls of the upper casing 3, and a closed hollow internal cylinder 11 extending in the vertical direction in the upper and lower casings 3 and 4 at the approximate center of the horizontal partition plate 2. A vertical weir plate 13 is provided between the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the upper casing 3, and the water supply port 9 and the drain port 10 are disposed on both sides of the stop plate 13. positioned. The lower end of the weir plate 13 is in contact with the upper surface of the horizontal partition plate 2.
[0011]
An exhaust pipe 15 connected to the exhaust port 7 is provided with an eliminator 16 and an exhaust fan 17. The upper casing 3 and the eliminator 16 and the lower casing 4 are connected by condensate pipes 21 and 22. A first water supply pipe 23 is connected to the lower casing 4, and the lower casing 4 and the water supply 9 are connected by a water supply pipe 24.
[0012]
When the exhaust gas treatment is performed by such a method, the cleaning water in the lower casing 4 is supplied from the water supply port 9 of the upper casing 3 through the water supply pipe 24, and a part is drained from the drain port 10 of the upper casing 3. Through the condensate pipe 21, the other part spreads on the horizontal partition plate 2, flows down in the slit 8, and returns to the lower casing 4. On the other hand, exhaust gas is supplied from the air supply port 6 of the lower casing 4 during this time, passes through the slit 8, is sucked by the exhaust fan 17, rises in the upper casing 3, and is exhausted from the exhaust port 7. In this way, when the exhaust gas rises from the air supply port 6 to the exhaust port 7, the exhaust gas is cleaned in gas and liquid contact with the cleaning water in the slit 8 and the upper casing 3.
[0013]
During the exhaust gas treatment as described above, the exhaust gas becomes an inclined flow in the slit 8, while the cleaning water supplied from the water supply port 9 into the upper casing 3 is between the inner cylinder 11 and the water supply port 9 and the drain port 10. Since the annular flow path is formed by the established weir plate 13, the inside of the upper casing 3 does not flow on the horizontal partition plate 2 over a short linear distance between the water supply port 9 and the drain port 10. Will flow around a long distance. The exhaust gas that rises as an inclined flow in this manner and the cleaning water that flows in the upper casing 3 over a long distance come into contact with each other violently and in a large contact area in a flowing state, and a stable exhaust gas treatment with high efficiency is performed. Will be.
[0014]
In the second embodiment shown in FIG. 3, two horizontal partition plates 2-1 and 2-2 are arranged inside a cylindrical casing 1, and upper casings 3-1 and 3-2 and a lower casing are arranged. 4, an air supply port 6 is provided in the lower casing 4, an exhaust port 7 is provided in the casing 3-1, and water supply ports 9-1 and 9-are provided in the upper and lower peripheral walls of the upper casings 3-1 and 3-2. 2 and drain openings 10-1 and 10-2, and concentric slits 8 inclined toward a number of centers through which gas introduced from the lower side to the horizontal partition plates 2-1 and 2-2 passes as an inclined flow. A closed hollow internal cylinder 11 extending vertically in the upper casings 3-1, 3-2 and the lower casing 4 is attached to substantially the center of the horizontal partition plates 2-1, 2-2. Between the outer peripheral surface of the upper casing 3-1 and the inner peripheral surface of the upper casing 3-1, 3-2 A plate 13 is provided, and the water supply ports 9-1, 9-2 and the drain ports 10-1, 10-2 are located on both sides of the dam plate 13, and the lower end of the dam plate 13 is a horizontal partition plate. 2 is in contact with the upper surface.
[0015]
In the upper casings 3-1 and 3-2 of the second embodiment, the exhaust gas is processed in the same manner as the upper casing 3 in the first embodiment, but a process with a higher degree of cleaning is performed. Will be. In this embodiment, the upper casing is two upper casings 3-1 and 3-2, but a larger number may be used as necessary.
[0016]
In the third embodiment shown in FIGS. 4 and 5, radial vertical partition plates 25 are provided between the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the upper casing 3 in the first embodiment shown in FIGS. The vertical partition plate 25 has an upper end extending to the upper side of the drain port 10, a lower end edge positioned higher than the horizontal partition plate, and an upper end edge below the drain port 10. The configuration is different from that of the first embodiment in that the vertical partition plates 25-2, whose lower end edges are positioned on the horizontal partition plate 2, are alternately arranged at a predetermined angle. is there.
[0017]
In such a case, when the washing water flows in the upper casing 3, it becomes a turbulent state and is subjected to a stirring action, so that the concentration of the washing water becomes uniform and the exhaust gas is uniformly washed. Will be done.
[0018]
The fourth embodiment shown in FIG. 6 is different from the second embodiment shown in FIG. 3 in that the upper casings 3-1 and 3-2 are both upper casings 3-1 and 3 of the third embodiment shown in FIGS. -2, a radial vertical partition plate 25 is provided between the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the upper casings 3-1 and 3-2. A vertical partition plate 25-1 extending above the ports 10-1 and 10-2 and having a lower end edge positioned higher than the horizontal partition plates 2-1 and 2-2 and an upper end edge of both drain ports 10 -1 and 10-2 are located below the vertical partition plates 25-2 whose lower end edges are located on the horizontal partition plates 2-1 and 2-2, and are alternately arranged at a predetermined angle. It is. Such a thing has the same effect as the second and third embodiments.
[0019]
In the fifth embodiment shown in FIG. 7, the inner cylinder 11 is made of a transparent material and the ultraviolet lamp 26 is provided in the inner cylinder 11 in the first embodiment shown in FIGS. In such a case, the exhaust gas is efficiently decomposed by a chemical reaction between the washing water and the ultraviolet rays.
[0020]
The sixth embodiment shown in FIG. 8 is the same as the fifth embodiment shown in FIG. 7 except that the upper and lower casings 3 and 4 are made of a transparent material, and the upper and lower surfaces of the horizontal partition plate 2 and the inner peripheral surfaces of the upper and lower casings 3 and 4. In addition, a photocatalyst film 27 made of titanium oxide is provided on the outer peripheral surface of the inner cylinder 11.
[0021]
The seventh embodiment shown in FIG. 9 is the same as the sixth embodiment shown in FIG. 8 except that an ultraviolet lamp 26 is provided outside the upper and lower casings 3 and 4 and exhibits the same function as the sixth embodiment. To do.
[0022]
The eighth embodiment shown in FIG. 10 has upper and lower casings 3 and 4 as upper casings 3-1 and 3-2 in the seventh embodiment shown in FIG. The lower casing 4 is provided with an air inlet 6, the upper casing 3-1 is provided with an exhaust outlet 7, and the upper and lower peripheral walls of the upper casing 3-1, 3-2 are respectively provided with water inlets 9-1 and 9-2 and a drain outlet 10. -1, 10-2 are provided, and the others are the same as in the seventh embodiment.
[0023]
In the sixth, seventh, and eighth embodiments as described above, the photocatalytic substance film 27 allows the separation, decomposition, sterilization, deodorization, and the like of harmful chemical substances in the exhaust gas, fungi, bacteria, viruses, dust, and the like. Further, the clogging of the slits 8 due to these processes and the adhesion of dirt to the surface of each part are prevented.
[0024]
The ninth embodiment shown in FIG. 11 is the same as the first embodiment shown in FIGS. 1 and 2, in which a heat exchange chamber 28 is provided in the upper part of the upper casing 3, and the upper part of the inner cylinder 11 is located in the heat exchange chamber 28. The lower part is located inside the lower casing 4, a heat pipe 29 is installed inside the inner cylinder 11, and heat radiating fins 31 project from the upper outer periphery of the inner cylinder 11.
[0025]
The tenth embodiment shown in FIG. 12 is similar to the sixth embodiment shown in FIG. 8 in the ninth embodiment shown in FIG. A photocatalytic material film 27 made of titanium oxide is provided on the peripheral surface and the outer peripheral surface of the inner cylinder 11.
[0026]
In the ninth and tenth embodiments as described above, the treatment of the exhaust gas with the washing water and the heat recovery of the exhaust gas are performed in parallel, and each constituent member including the casing is made of a special heat resistant material. Therefore, it is possible to configure the apparatus at low cost, and the recovered heat can be used as another heat source, so that an energy saving effect can be obtained.
[0027]
The eleventh embodiment shown in FIG. 13 is similar to the first embodiment shown in FIGS. 1 and 2 in that an air supply pipe 36 connected to the air supply port 6 and an exhaust pipe 15 connected to the exhaust port 7 are an annular trachea. Connected with 38. In this embodiment, the primary-treated exhaust gas discharged to the exhaust pipe 15 is recirculated to the air supply port 6 to increase the processing efficiency. Reference numeral 39 denotes an electromagnetically operated on / off valve provided in the second source air supply pipe 36, the exhaust pipe 15 and the recirculation pipe 38. The exhaust gas is circulated by the control of the on / off valve 39.
[0028]
The twelfth embodiment shown in FIG. 14 differs from the first embodiment shown in FIGS. 1 and 2 in that the casing 1 has a cubic shape, no internal cylinder is provided, and a slit in the horizontal partition plate 33. 34 is configured as a plurality of parallel slits inclined so as to flow in an oblique direction from below to above along the flow direction in the lower casing 4 of the exhaust gas, and the point that no blocking plate is provided. Unlike the first embodiment, the rest is the same as the first embodiment.
[0029]
A thirteenth embodiment shown in FIG. 15 is provided with a plurality of vertical partition plates 25 in parallel with the inside of the upper casing 3 in the twelfth embodiment shown in FIG. The vertical partition plate 25-1 that extends to the upper side, the lower end edge is positioned higher than the horizontal partition plate, the upper end edge is positioned below the drain port 10, and the lower end edge is positioned on the horizontal partition plate 2. The vertical partition plates 25-2 are alternately arranged at a predetermined angle, and the other parts are the same as those in the twelfth embodiment.
[0030]
The fourteenth embodiment shown in FIG. 16 is made of titanium oxide on the upper and lower surfaces of the horizontal partition plate 2, the inner peripheral surfaces of the upper and lower casings 3 and 4, and the outer peripheral surface of the inner cylinder 11 in the thirteenth embodiment shown in FIG. A photocatalytic material film 27 is provided, and an ultraviolet lamp 26 is provided outside the upper and lower casings 3, and the others are the same as in the ninth embodiment.
[0031]
The fifteenth embodiment shown in FIG. 17 is different from the twelfth embodiment shown in FIG. 14 in that the second original air supply pipe 36 connected to the air supply opening 6 and the exhaust pipe 15 connected to the exhaust outlet 7 are connected to each other. They are connected by the trachea 38. In this embodiment, the primary-treated exhaust gas discharged to the exhaust pipe 15 is recirculated to the air supply port 6 to increase the processing efficiency.
[0032]
The sixteenth embodiment shown in FIG. 18 is the same as the twelfth embodiment shown in FIG. 14, except that the harmful substance removing means 30 is provided in the exhaust pipe 15 between the eliminator 16 and the exhaust fan 17, 30 includes a photocatalytic filter 35 and ultraviolet lamps 37 alternately arranged. The photocatalytic filter 35 is constituted by, for example, a surface obtained by attaching a photocatalytic substance such as titanium oxide to the surface of activated carbon.
[0033]
In the sixteenth embodiment, depending on the type of exhaust gas to be treated, there are those containing harmful components that are not removed by gas-liquid contact. Therefore, this embodiment is used when it is necessary to remove harmful components from this kind of exhaust gas, and the harmful components are attached to the photocatalytic filter 35 of the harmful substance removing means 30 and are separated by a photocatalyst. Hazardous components will be decomposed.
[0034]
A seventeenth embodiment shown in FIG. 19 is different from the sixteenth embodiment shown in FIG. 18 in that a photocatalytic filter 35 is provided in place of the harmful substance removing means 30, and a second original water supply pipe 41 is provided in addition to the first original water supply pipe 23. The second source water supply pipe 41 is provided with a constant temperature means 42 and connected to the outlet of the water supply pipe 24.
[0035]
FIG. 20 is a longitudinal sectional view of the eighteenth embodiment. This embodiment has a cubic shape similar to that of the casing 1 of the twelfth embodiment shown in FIG. 14, and a heat pipe plate 44 is arranged on the back surface. A heat exchange chamber 28 having a heat exchanger 32 disposed therein is provided at the upper part of the upper casing 3, and the heat pipe plate 44 is located at the upper part in the heat exchange chamber 28, and the lower part is the interior of the lower casing 4. The heat radiating fins 31 project from the upper portion of the heat pipe plate 44.
[0036]
The nineteenth embodiment shown in FIG. 21 is similar to the eighteenth embodiment shown in FIG. 20 on the upper and lower surfaces and slit surfaces of the horizontal partition plate 2, the inner peripheral surfaces of the upper and lower casings 3 and 4, and the inner surface of the top plate of the upper casing 3. A photocatalytic material film 27 made of titanium oxide is provided, and an ultraviolet lamp 37 is provided on the surfaces of the upper and lower casings 3 and 4.
[0037]
In the twentieth embodiment shown in FIG. 22, two casings 1-1 and 1-2 having the same configuration as the casing of the twelfth embodiment shown in FIG. An outlet of 15-1 is connected to an air supply port 6-2 of the casing 1-2, and an eliminator 16-1 and an exhaust fan 17 are provided in the exhaust pipe 15-1. The drain ports 10-1 and 10-2 are connected to the lower casings 4-1 and 4-2 by condensate pipes 21-1 and 21-2, and the eliminators 16-1 and 16-2 are connected to the condensate pipes 22-1, 21-2. It is connected to the lower casings 4-1 and 4-2 by 22-2.
[0038]
The twenty-first embodiment shown in FIG. 23 is the same as the twentieth embodiment shown in FIG. 22, except that heat pipe plates 44-1 and 44-2 are installed on the surfaces of adjacent plates of the casings 1-1 and 1-2, respectively. A heat exchange chamber 28 in which heat exchangers 32-1 and 32-2 are provided is provided in the upper portions of the casings 3-1 and 3-2, and the heat pipe plate 44 has an upper portion in the heat exchange chamber 28. Further, the lower part is located inside the lower casing 4, and the heat radiating fins 31 project from the upper part of the heat pipe plate 44. A pump 48 is provided in the heat medium pipe 43 of the heat exchangers 32-1 and 32-2.
[0039]
The twenty-second embodiment shown in FIG. 24 is the same as the twenty-first embodiment shown in FIG. 23, in which the heat medium pipe 43 of the heat exchanger 32 extends outside the lower casings 4-1, 4-2, and the air conditioning means 46 In addition, a heat medium supply unit 47 is installed.
[0040]
The twenty-third embodiment shown in FIG. 25 is the same as the twelfth embodiment shown in FIG. 14 except that heat pipe plates 44-1 and 44-2 are installed on the surfaces of adjacent plates of the casings 1-1 and 1-2, respectively. Radiating fins 31-1 and 31-2 project from the heat pipe plates 44 located in the casings 4-1 and 4-2. And the upper and lower surfaces and slit surfaces of the horizontal partition plate 33, upper and lower casings 3-1 and 3-2; inner peripheral surfaces of 4-1 and 4-2, and inner surfaces of the bottom plates of the lower casings 4-1 and 4-2 Further, a photocatalytic material film 27 made of titanium oxide is provided, and ultraviolet lamps 37 are provided on the outer surfaces of the upper and lower casings 3-1, 3-2; 4-1, 4-2.
[0041]
【The invention's effect】
Since the present invention is as described above, it is not necessary to provide a plurality of gas-liquid contact portions, the entire apparatus is not increased in size, and can be provided at a low cost. In addition, there is an effect that the treatment efficiency is high and the exhaust gas treatment can be performed effectively.
[Brief description of the drawings]
FIG. 1 is a partially cutaway longitudinal front view taken along line 1-1 of FIG. 2 according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view taken along the line 2-2 and viewed in the direction of the arrow.
FIG. 3 is a longitudinal front view of the main part of the second embodiment.
FIG. 4 is a longitudinal sectional front view of a main part of the third embodiment.
FIG. 5 is a longitudinal sectional view taken along the line 5-5 and viewed in the direction of the arrow.
FIG. 6 is a longitudinal front view of the main part of the fourth embodiment.
FIG. 7 is a longitudinal sectional view of an essential part of the fifth embodiment.
FIG. 8 is a longitudinal sectional front view of an essential part of the sixth embodiment.
FIG. 9 is a longitudinal sectional front view of the main part of the seventh embodiment.
FIG. 10 is a longitudinal sectional front view of a main part of the eighth embodiment.
FIG. 11 is a longitudinal sectional front view of an essential part of the ninth embodiment.
FIG. 12 is a longitudinal front view of the main part of the tenth embodiment.
FIG. 13 is a longitudinal sectional view of an essential part of the eleventh embodiment.
FIG. 14 is a longitudinal front view of the main part of the twelfth embodiment.
FIG. 15 is a longitudinal front view of the main part of the thirteenth embodiment.
FIG. 16 is a longitudinal front view of the main part of the fourteenth embodiment.
FIG. 17 is a longitudinal front view of the main part of the fifteenth embodiment.
FIG. 18 is a longitudinal sectional view of an essential part of the sixteenth embodiment.
FIG. 19 is a longitudinal front view of the main part of the seventeenth embodiment.
FIG. 20 is a longitudinal front view of the main part of the eighteenth embodiment.
FIG. 21 is a longitudinal front view of the main part of the nineteenth embodiment.
FIG. 22 is a longitudinal front view of the main part of the twentieth embodiment.
FIG. 23 is a longitudinal front view of the main part of the twenty-first embodiment.
FIG. 24 is a longitudinal front view of the main part of the twenty-second embodiment.
FIG. 25 is a longitudinal front view of the main part of the twenty- third embodiment.
FIG. 26 is a longitudinal front view of a conventional wet exhaust gas treatment apparatus of the same type as the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Casing 2 Horizontal partition plate 3 Upper casing 4 Lower casing 6 Air supply port 7 Exhaust port 8 Slit 9 Water supply port
10 Drain port 11 Internal cylinder
13 Dam plate 15 Exhaust pipe
16 Eliminator 17 Exhaust fan
21 Condensate pipe 22 Condensate pipe
23 First water supply pipe 24 Water supply pipe
25 Vertical divider 26 UV light
27 Photocatalytic material coating 28 Heat exchange chamber
29 Heat pipe 30 Hazardous material removal means
31 Radiation fin 32 Heat exchanger
33 Horizontal divider 34 Slit
35 Photocatalyst filter 36 Air supply pipe
37 UV light 38 Annular trachea
39 On-off valve 41 Second source water pipe
42 Constant temperature means 43 Heat transfer conduit
44 Heat pipe plate 46 Air conditioning means
47 Heating medium supply section 48 Pump

Claims (1)

A horizontal horizontal partition plate is arranged inside a cubic casing, and is divided into an upper casing and a lower casing, an air supply port is provided in the lower casing, and an exhaust port is provided in the upper casing. In the wet exhaust gas treatment apparatus provided with a number of parallel slits that allow gas introduced from the air supply port to pass as an inclined flow, a water supply port on the lower peripheral wall of the upper casing, and a drain port on the upper peripheral wall,
A plurality of vertical partition plates are provided in parallel inside the upper casing. These vertical partition plates have upper end edges below the top wall of the upper casing and above the drain port, and lower end edges are the horizontal partition plates. The first vertical partition plate positioned higher than the plate and the second vertical partition plate whose upper end edge is positioned lower than the drain outlet and whose lower end edge is positioned on the horizontal partition plate are alternated. Between the upper end of the vertical partition plate and the top wall of the upper casing is formed with a ventilation space for collecting gas rising between adjacent partition plates and flowing it to the exhaust port, Wet exhaust gas characterized in that a photocatalytic material film made of titanium oxide is provided on the upper and lower surfaces and slit surfaces of the plate, the inner peripheral surface of the upper and lower casings, and the bottom surface of the lower casing, and an ultraviolet lamp is provided outside the upper and lower casings. Processing equipment.

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