A tangentially entering spiral rising exhaust gas washing tower

Abstract

The utility model relates to the technical field of environmental protection purification, and specifically to a waste gas washing tower with tangential entry and spiral ascent, which can be used for washing and cooling flue gas and odor. Three layers of inner wall grooves are arranged on the inner wall of the washing tower body, the inner wall grooves are located above the air inlet pipe, and the three layers of inner wall grooves are installed with oblique blade impellers. Two sprayers are arranged above the single oblique blade impeller, and the three layers of sprayers are in parallel state. The sprayers are connected to the water supply pipe, and a plurality of spray ports are arranged on the sprayers. Two layers of support plates are arranged above the inside of the washing tower body, and the support plates are located between the air outlet box and the sprayers. Defoggers are installed on the two layers of support plates. The utility model prolongs the residence time of (flue gas, odor, etc.) in the tower body, and increases the washing effect. The gas and liquid move in reverse, and the contact area is increased, and the absorption effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection purification, in particular to a tangentially entering spirally ascending waste gas washing tower. Background Art

[0002] At present, the medium flow direction of common washing towers is mostly countercurrent, that is, the gas enters from the bottom, the washing water flows down from the top, and the gas and liquid collide in the opposite direction to perform washing. In this form, when the height of the washing tower is constant, the gas-liquid contact time is short, resulting in poor washing effect. To increase the gas-liquid contact time, the height of the washing tower can only be increased, which results in high production costs and inconvenient operation. Utility Model Content

[0003] In order to solve the above problems, the utility model provides the following technical solutions:

[0004] The positioning frame is provided with two layers of fixing plates, a washing tower body is installed at the center of the fixing plates, an air outlet box is provided at the upper end of the washing tower body, the air outlet box is connected to one end of the induced draft fan pipe, the other end of the induced draft fan pipe is connected to the induced draft fan box, an air intake pipe is provided at the lower end of the washing tower body, the outer wall of the air intake pipe is tangent to the inner wall of the washing tower body, a water delivery pipe is connected to the outer wall of the washing tower body, the other end of the water delivery pipe is connected to the water storage tank, when the induced draft fan is working, the exhaust gas in the washing tower body is sucked up and out, an air intake pipe is provided at the lower end of the washing tower body, the exhaust gas enters the washing tower through the tangent of the air intake pipe, and passes through the induced draft fan, and the exhaust gas upward passes through the three-layer oblique blade impeller to form a spiral gas rise;

[0005] The inner wall of the washing tower body is provided with three layers of inner wall grooves, and the three layers of inner wall grooves are installed with oblique blade impellers. Two sprayers are arranged above the single oblique blade impeller, and the three layers of sprayers are in parallel state. When spraying, multiple spray ports are opened at the same time to clean and purify the exhaust gas. The sprayer is connected to the water pipeline, and multiple spray ports are arranged on the sprayer. Two layers of support plates are arranged above the inside of the washing tower body, and the support plates are located between the air outlet box and the sprayer. Defoggers are installed on the two layers of support plates.

[0006] Optionally, the upper and lower ends of the washing tower body are trapezoidal hollow cylinders, and the trapezoidal hollow cylinder at the upper end of the washing tower is connected to the interior of the air outlet box.

[0007] Optionally, both water delivery pipelines are connected to the water storage tank, pass through a fixing plate of the positioning frame, and are connected to the sprinklers at the upper and middle layers.

[0008] Optionally, the centers of the two layers of fixing plates of the positioning frame are circular holes, and the two circular holes are concentric and are used for installing the washing tower body.

[0009] Optionally, the blades on the three pitch-blade impellers have a uniform rotation direction. When the exhaust gas enters, the exhaust gas is drawn upward by the induced draft fan and passes through the three impellers to form a spiral airflow.

[0010] Optionally, a filter screen is installed on the two layers of support plates, and a demister is installed on the filter screen.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The spiral motion of gas prolongs the residence time in the tower and increases the washing effect; the reverse motion of gas and liquid increases the contact area and enhances the absorption effect; the setting of two layers of demister increases the gas outlet resistance and prolongs the washing and absorption time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is the right view of the utility model;

[0015] Figure 3 It is a right side cross-sectional view of the utility model;

[0016] Figure 4 This is the front view of the utility model;

[0017] Figure 5 It is a front view cross-sectional view of the utility model.

[0018] Notes on the accompanying drawings: 1. Positioning frame; 2. Washing tower body; 3. Air outlet box; 4. Induced draft fan duct; 5. Induced draft fan box; 6. Air intake duct; 7. Water storage tank; 8. Water supply pipeline; 9. Defogger; 10. Support plate; 11. Sprayer; 12. Spray port; 13. Oblique blade impeller; 14. Inner wall groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 — Figure 5As shown in the figure, the utility model provides a tangentially entering spirally ascending exhaust gas washing tower, comprising a positioning frame 1 and a washing tower body 2, the positioning frame 1 has two layers of fixing plates for fixing the washing tower body 2, the upper end of the washing tower body 2 is connected with an air outlet box 3, the air outlet box 3 and the induced draft fan are connected by an induced draft fan pipe 4, the outer wall of the air inlet pipe 6 is tangent to the inner wall of the washing tower body 2, a water delivery pipe 8 is connected to the outer wall of the washing tower body 2, and the other end of the water delivery pipe 8 is connected to a water storage tank 7; when the induced draft fan 5 is working, the exhaust gas in the washing tower body 1 is sucked up and out, and an air inlet pipe 6 is provided at the lower end of the washing tower body 2, the exhaust gas enters the washing tower 2 tangentially through the air inlet pipe 6, and passes through the induced draft fan 5, and the exhaust gas passes upward through the three-layer oblique blade impeller 13 to form a spiral gas rise.

[0021] The inner wall of the washing tower body 2 is provided with three layers of inner wall grooves 14, and the inner wall grooves 14 are located above the air inlet pipe 6. The three layers of inner wall grooves 14 are all installed with oblique blade impellers 13. Two sprayers 11 are arranged above the single oblique blade impeller 13. The three layers of sprayers 11 are in parallel state. The sprayers 11 are connected to the water supply pipe 8. The sprayers 11 are provided with multiple spray ports 12. Two layers of support plates 10 are arranged above the inside of the washing tower body 2. The support plates 10 are located between the air outlet box 3 and the sprayers 11. Defoggers 9 are installed on the two layers of support plates 10. After the exhaust gas spirals up, it passes through the sprayer 12, and the sprayer 12 sprays water mist to purify the exhaust gas. The purified exhaust gas passes through the two layers of demisters 9 again, and the water vapor is filtered and the purified gas is extracted.

[0022] In view of the short gas-liquid residence time and poor washing effect of the common washing tower in environmental protection industry equipment, we have made the following improvements: the gas inlet enters along the tangent of the tower wall, and two layers of gas co-directional swirl plates are set in the middle and lower part of the tower body, so that the gas rises counterclockwise after entering the tower body. Three layers of silicon carbide spiral nozzles are set in the middle and upper part of the tower body to let the washing water spray down in a clockwise spiral. Two layers of demisters are set in the upper part of the tower body to play the role of demisting and increasing local resistance.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tangentially entering spirally ascending exhaust gas washing tower, comprising a positioning frame (1) and a washing tower body (2), wherein the washing tower body (2) is in the shape of a hollow cylinder, and is characterized in that: The positioning frame (1) is provided with two layers of fixing plates, a washing tower body (2) is installed at the center of the fixing plates, an air outlet box (3) is provided at the upper end of the washing tower body (2), the air outlet box (3) is connected to one end of an induced draft fan pipe (4), the other end of the induced draft fan pipe (4) is connected to an induced draft fan box (5), an air intake pipe (6) is provided at the lower end of the washing tower body (2), the outer wall of the air intake pipe (6) is tangent to the inner wall of the washing tower body (2), a water supply pipe (8) is connected to the outer wall of the washing tower body (2), and the other end of the water supply pipe (8) is connected to a water storage tank (7); The inner wall of the washing tower body (2) is provided with three layers of inner wall grooves (14), the inner wall grooves (14) are located above the air inlet pipe (6), and the three layers of inner wall grooves (14) are all installed with oblique blade impellers (13), and there are three oblique blade impellers (13) in total. Two sprayers (11) are arranged above each oblique blade impeller (13), and the three layers of sprayers (11) are in a parallel state. The sprayers (11) are connected to the water supply pipe (8), and the sprayers (11) are provided with a plurality of spray ports (12). Two layers of support plates (10) are arranged above the inside of the washing tower body (2), and the support plates (10) are located between the air outlet box (3) and the sprayers (11), and demisters (9) are installed on the two layers of support plates (10).

2. The tangentially entering spiral ascending exhaust gas scrubbing tower according to claim 1, characterized in that: The upper and lower ends of the washing tower body (2) are trapezoidal hollow cylinders.

3. The tangentially entering spiral ascending exhaust gas scrubbing tower according to claim 1, characterized in that: The two water delivery pipes (8) are both connected to the water storage tank (7), pass through a fixing plate of the positioning frame (1), and are connected to the sprinkler (11).

4. The tangentially entering spiral ascending exhaust gas scrubbing tower according to claim 1, characterized in that: The centers of the two layers of fixing plates of the positioning frame (1) are circular holes, and the two circular holes are concentric and are used to install the washing tower body (2).

5. The tangentially entering spiral ascending exhaust gas scrubbing tower according to claim 1, characterized in that: The blades on the three pitch-blade impellers (13) rotate in the same direction.

6. The tangentially entering spiral ascending exhaust gas scrubbing tower according to claim 1, characterized in that: A filter screen is installed on the two layers of support plates (10), and a demister (9) is installed on the filter screen.

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