Efficient tail gas water curtain cooling device

Abstract

The utility model discloses an efficient tail gas water curtain cooling device which comprises an outer cavity, an inner cavity and a gas guide cavity which are coaxially arranged from outside to inside, the outer cavity is communicated with the inner cavity at the top, and the efficient tail gas water curtain cooling device is characterized in that the inner cavity can rotate, and a plurality of layers of radial annular water distribution plates are coaxially arranged on the outer side of the inner cavity; inclined water spraying holes are uniformly distributed in the radial multi-layer annular water distribution plate in the circumferential direction, and an included angle is formed between the water outlet direction of the water spraying holes and the axial direction of the air guide cavity; the radial multi-layer annular water distribution plate synchronously rotates along with the inner cavity, and water is sprayed from the water spraying holes to form a spiral water curtain to surround the air guide cavity. Tail gas subjected to high-temperature treatment is cooled through the formed spiral water curtain, the contact area of the tail gas and the water curtain is increased, the contact time of the tail gas and the water curtain is prolonged, heat exchange efficiency is enhanced, and dust sedimentation is promoted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tail gas cooling treatment technical field especially relates to a kind of efficient tail gas water curtain cooling device. BACKGROUND

[0002] In the plasma tail gas water washing treatment equipment, the tail gas cooling device is a cooling structure installed between the high-temperature combustion chamber and the dust settling water tank. The traditional tail gas cooling device usually adopts static water curtain or fixed spray structure, which has the problems of limited gas-liquid contact area, low cooling efficiency and easy formation of local high-temperature blind area. SUMMARY

[0003] The utility model discloses a kind of efficient tail gas water curtain cooling devices to overcome the deficiencies in the prior art, by the spiral water curtain formed to the tail gas of high-temperature treatment is cooled, increase the contact area and time of tail gas and water curtain, strengthen heat exchange efficiency, promote dust settlement.

[0004] Technical scheme: To achieve the above object, a kind of efficient tail gas water curtain cooling device of the utility model, including from outside to inside coaxially arranged outer cavity, inner cavity and gas guide cavity, outer cavity and inner cavity are communicated at top, the inner cavity can rotate, its outside coaxially arranged with radial multilayer annular water distribution plate, radial multilayer annular water distribution plate is uniformly distributed with inclined water spray hole along the circumference direction, the water outlet direction of water spray hole and the axial direction of gas guide cavity are included angle;The radial multilayer annular water distribution plate is synchronously rotated with the inner cavity, and spiral water curtain is formed by water spray from water spray hole to surround gas guide cavity.

[0005] Further, the water spray hole is distributed as multiple turns along the circumferential direction of the radial multilayer annular water distribution plate, and the multiple turns of the water spray hole are distributed at equal intervals along the radial direction of the radial multilayer annular water distribution plate.

[0006] Further, it further includes a rotating drive mechanism;The inner cavity is rotatably connected to the outer cavity at the bottom through a bearing, and the radial multilayer annular water distribution plate is fixedly installed on the support frame of the inner wall of the inner cavity by fasteners;The rotating drive mechanism drives the inner cavity to rotate the radial multilayer annular water distribution plate, so that the spiral water curtain dynamically covers the tail gas flow channel.

[0007] Further, the outer cavity is provided with an air inlet cavity at the top, the air inlet cavity is in the form of a conical structure, the inner surface thereof is coaxially connected to the air inlet end of the gas guide cavity, and is used to guide the tail gas flow to the central region of the spiral water curtain.

[0008] Further, the bottom of the outer cavity is provided with an air outlet cavity, so that the top of the air outlet cavity covers the bearing;The air outlet cavity is in communication with the inner cavity, and the inner diameter of the air outlet cavity is the same as that of the inner cavity.

[0009] Further, the surface of the air inlet cavity is coated with a high-temperature-resistant ceramic coating.

[0010] Further, the outer cavity and the inner cavity are limited to form a cooling water clamping cavity, and a water inlet is arranged on the outer cavity and communicates with the bottom of the cooling water clamping cavity; the inner cavity and the gas guide cavity are limited to form a water curtain forming clamping cavity, and the radial multi-layer annular water distribution plate is located in the water curtain forming clamping cavity.

[0011] Beneficial effects: the radial multi-layer annular water distribution plate rotates synchronously with the inner cavity, spiral water curtains are formed by water sprayed from the water spraying holes to surround the gas guide cavity, so that the periphery of the gas guide cavity is dynamically covered, the contact area and time of the water curtain and the high-temperature tail gas are greatly increased, and the heat exchange efficiency is significantly improved; the water spraying holes are uniformly distributed in the circumferential direction and the water outlet direction forms an angle with the axial direction of the gas guide cavity, so that the water curtain is wrapped in the spiral form to avoid local insufficient cooling; the coaxial design of the outer cavity, the inner cavity and the gas guide cavity optimizes the space layout, reduces the device volume, simultaneously realizes the three-dimensional coverage of the multi-layer spiral water curtain, and the spiral water curtain generates a centrifugal effect on the tail gas to promote dust settlement. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a half-section structure schematic view of the utility model;

[0013] Figure 2 It is Figure 1 A structure enlarged schematic view of the middle A area. DETAILED DESCRIPTION

[0014] The utility model will be further described below in combination with the drawings.

[0015] As Figure 1 And Figure 2 As shown in a kind of high-efficiency tail gas water curtain cooling device shown in the drawings, outer cavity 1, inner cavity 2 and gas guide cavity 3 are arranged coaxially from outside to inside, and outer cavity 1 and inner cavity 2 are connected in top portion, and it is characterized in that: the inner cavity 2 is rotatable, and radial multi-layer annular water distribution plate 4 is arranged coaxially on its outer side, and radial multi-layer annular water distribution plate 4 is uniformly distributed with inclined water spraying hole 40 in circumferential direction, and the water outlet direction of water spraying hole 40 forms an angle with the axial direction of gas guide cavity 3;Radial multi-layer annular water distribution plate 4 rotates synchronously with inner cavity 2, spiral water curtains are formed by water sprayed from water spraying hole 40 to surround gas guide cavity 3, so that the periphery of gas guide cavity 3 is dynamically covered, the contact area and time of water curtain and high-temperature tail gas are greatly increased, and the heat exchange efficiency is significantly improved;Water spraying hole 40 is uniformly distributed in circumferential direction and the water outlet direction forms an angle with the axial direction of gas guide cavity 3, so that the water curtain is wrapped in spiral form to avoid local insufficient cooling;The coaxial design of outer cavity, inner cavity and gas guide cavity optimizes the space layout, reduces the device volume, simultaneously realizes the three-dimensional coverage of multi-layer spiral water curtain, and the spiral water curtain generates a centrifugal effect on the tail gas to promote dust settlement.

[0016] The water spraying holes 40 are distributed in multiple circles along the circumference of the radial multi-layer annular water distribution plate 4, and are distributed equidistantly along the radial direction of the radial multi-layer annular water distribution plate 4, so as to ensure the uniformity of the multi-layer spiral water curtain.

[0017] The utility model also includes rotating drive mechanism 7, the inner chamber 2 is through bearing 5 and outer chamber 1 rotation connection cooperation in bottom, the radial multi-layer annular water distribution plate 4 is fixedly installed on the support frame 20 of inner chamber 2 inner wall through fastener 6, rotating drive mechanism 7 drive inner chamber 2 drive radial multi-layer annular water distribution plate 4 rotation, make spiral water curtain dynamic cover exhaust gas flow channel, realize water curtain dynamic adjustment cover area, respond to exhaust gas flow rate, temperature fluctuation, enhance the stability of device. Figure 1 As shown in the figure, rotating drive mechanism 7 includes gear ring 71, pivot shaft 72, first driven gear 73, second driven gear 74, drive gear 75 and motor 76, gear ring 71 fixedly installed in the outer portion of inner chamber 2, pivot shaft 72 is rotatably installed at the bottom of outer chamber 1, first driven gear 73 is installed at the lower end of pivot shaft 72, second driven gear 74 is installed at the upper end of pivot shaft 72 and is engaged with gear ring 71, drive gear 75 is engaged with first driven gear 73, and the output shaft of motor 76 is connected with drive gear 75.

[0018] The outer chamber 1 is provided with an air inlet cavity 8 at the top, the air inlet cavity 8 is in the form of a tapered structure, the inner surface of which is coaxially connected with the air inlet end of the air guide cavity 3, for guiding the exhaust gas flow to the central region of the spiral water curtain, thereby strengthening the gas-liquid mixing disturbance and improving the heat exchange efficiency. The tapered structure can smoothly transition the gas flow, reduce the pressure loss caused by sudden changes in gas flow, and reduce energy consumption.

[0019] The bottom of the outer chamber 1 is provided with an air outlet cavity 9, and the top of the air outlet cavity 9 covers the bearing 5; the air outlet cavity 9 is in communication with the inner chamber 2, and the inner diameter of the air outlet cavity 9 is the same as the inner diameter of the inner chamber 2. By adopting the structure design of the same diameter of the air outlet cavity 9 and the inner chamber 2, the vortex or backflow caused by the sudden change of the cross section is avoided, and the smooth exhaust of the exhaust gas is ensured.

[0020] The surface of the air inlet cavity 8 is coated with a high-temperature-resistant ceramic coating, which can resist the long-term thermal shock of high-temperature exhaust gas and prevent the cavity of the air inlet cavity 8 from being oxidized or deformed.

[0021] The outer cavity 1 and the inner cavity 2 constitute a cooling water clamping cavity 10, the outer cavity 1 is provided with a water inlet 11 leading to the bottom of the cooling water clamping cavity 10; the inner cavity 2 and the air guide cavity 3 constitute a water curtain forming clamping cavity 12, and the radial multi-layer annular water distribution plate 4 is located in the water curtain forming clamping cavity 12. The cooling water clamping cavity 10 formed by the outer cavity 1 and the inner cavity 2 forms a water flow path from bottom to top through the bottom water inlet 11, the water flow enters the water curtain forming clamping cavity 12 by gravity to supply the water distribution plate 4, and the water distribution plate 4 is provided with a stable water source, the water spraying hole 40 is a inclined hole penetrating through the water distribution plate 4, the pressure of the water spraying hole 40 is uniform, and the water curtain is prevented from being broken or unevenly distributed.

[0022] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A high-efficiency exhaust gas water curtain cooling device, comprising an outer cavity (1), an inner cavity (2), and a gas guiding cavity (3) coaxially arranged from the outside to the inside, wherein the outer cavity (1) and the inner cavity (2) are connected at the top, characterized in that: The inner cavity (2) is rotatable, and a radial multi-layer annular water distribution plate (4) is coaxially arranged on its outer side. The radial multi-layer annular water distribution plate (4) has inclined water spray holes (40) evenly distributed along the circumference. The water outlet direction of the water spray holes (40) is at an angle to the axial direction of the air guide cavity (3). The radial multi-layer annular water distribution plate (4) rotates synchronously with the inner cavity (2) and sprays water from the water spray holes (40) to form a spiral water curtain to surround the air guide cavity (3).

2. The high-efficiency exhaust gas water curtain cooling device according to claim 1, characterized in that: The water spray holes (40) are distributed in multiple rings along the radial multi-layer annular water distribution plate (4), and the multiple rings of water spray holes (40) are distributed at equal intervals along the radial multi-layer annular water distribution plate (4).

3. The high-efficiency exhaust gas water curtain cooling device according to claim 1, characterized in that: It also includes a rotary drive mechanism (7); the inner cavity (2) is rotatably connected to the outer cavity (1) at the bottom through a bearing (5), and the radial multi-layer annular water distribution plate (4) is fixedly installed on the support frame (20) on the inner wall of the inner cavity (2) by fasteners (6); the rotary drive mechanism (7) drives the inner cavity (2) to rotate the radial multi-layer annular water distribution plate (4), so that the spiral water curtain dynamically covers the tail gas flow channel.

4. The high-efficiency exhaust gas water curtain cooling device according to claim 3, characterized in that: The top of the outer cavity (1) is provided with an air inlet cavity (8), which has a conical structure and its inner surface is coaxially connected to the air inlet end of the air guide cavity (3) to guide the tail gas flow to the central area of ​​the spiral water curtain.

5. The high-efficiency exhaust gas water curtain cooling device according to claim 3, characterized in that: An air outlet chamber (9) is installed at the bottom of the outer cavity (1), so that the top of the air outlet chamber (9) covers the bearing (5); the air outlet chamber (9) is connected to the inner cavity (2), and the inner diameter of the air outlet chamber (9) is the same as the inner diameter of the inner cavity (2).

6. The high-efficiency exhaust gas water curtain cooling device according to claim 4, characterized in that: The surface of the air intake chamber (8) is coated with a high-temperature resistant ceramic coating.

7. A high-efficiency exhaust gas water curtain cooling device according to any one of claims 1 to 5, characterized in that: The outer cavity (1) and the inner cavity (2) are positioned to form a cooling water clamping cavity (10). The outer cavity (1) is provided with an inlet (11) that connects to the bottom of the cooling water clamping cavity (10). The inner cavity (2) and the air guiding cavity (3) are positioned to form a water curtain forming clamping cavity (12). The radial multi-layer annular water distribution plate (4) is located in the water curtain forming clamping cavity (12).

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