Dry type reaction tower for enhancing absorption and desulfurization

Abstract

The utility model relates to the technical field of reaction towers, and discloses a reinforced absorption desulfurization dry type reaction tower, which comprises a 90-degree bent pipe, a rectifying device is fixedly arranged at the top of the 90-degree bent pipe, a rectifying plate is arranged in the middle of the rectifying device, and the rectifying plate is arranged in the middle of the rectifying device. The end, away from the 90-degree bent pipe, of the rectifying device is fixedly connected with a venturi tube contraction section, and a smoke outlet is formed in the top of the tower body. According to the enhanced absorption desulfurization dry type reaction tower, the rectifying device is additionally arranged, so that collision and integration of flue gas in the rectifying device are achieved, disordered flue gas before entering the Venturi tube is adjusted to flow vertically and upwards, and poor flue gas velocity distribution before entering the Venturi tube is integrated relatively uniformly; the direction of the flue gas is changed by adding the disturbance device, so that the flue gas and the absorbent are violently collided and fully mixed at the position, the mixing effect is greatly improved, and the desulfurization efficiency and the utilization rate of the absorbent are further improved.

Description

Technical Field

[0001] This utility model relates to the field of reaction tower technology, specifically to a dry reaction tower for enhanced absorption desulfurization. Background Technology

[0002] Sulfur dioxide is one of the main air pollutants from the flue gas of municipal solid waste incineration in my country. Sulfur dioxide poses a great threat to human health, plants, and the atmospheric environment. Flue gas desulfurization technology is the most effective way to control sulfur dioxide pollution. The main principle of dry desulfurization is to use dry powder absorbent to react with sulfur dioxide in the flue gas to generate harmless solid salt particles, thereby achieving the purpose of removing harmful sulfur dioxide from the flue gas. By improving the mixing effect between the absorbent and the flue gas in the dry reaction tower and increasing the contact time between the absorbent and the flue gas, the desulfurization efficiency and the utilization rate of the absorbent can be improved.

[0003] In existing dry reaction towers, the flue gas flow velocity distribution is uneven before entering the Venturi tube. The flow velocity is low near the inner side of the bend and high at the outer side. This leads to the formation of local supersaturated or barren areas of the flue gas and absorbent injected at the Venturi nozzle, thus affecting the desulfurization efficiency and absorbent utilization rate. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an enhanced absorption desulfurization dry reaction tower to solve the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dry reaction tower for enhanced absorption desulfurization, comprising a 90-degree bend, a rectifier fixedly installed at the top of the 90-degree bend, a rectifier plate disposed in the middle of the rectifier, a Venturi tube contraction section fixedly connected to the end of the rectifier away from the 90-degree bend, a Venturi tube nozzle fixedly connected to the end of the Venturi tube contraction section away from the rectifier, a Venturi tube diffuser section fixedly connected to the end of the Venturi tube nozzle away from the Venturi tube contraction section, a disturbance device fixedly connected to the end of the Venturi tube diffuser section away from the Venturi tube nozzle, a disturbance plate disposed in the middle of the disturbance device, a tower body fixedly connected to the end of the disturbance device away from the Venturi tube diffuser section, and a flue gas outlet disposed at the top of the tower body.

[0008] Preferably, the rectifier plate forms a 15 mm × 15 mm small square in the middle of the rectifier device, and the height of the rectifier plate is 100 mm.

[0009] Preferably, the disturbance plates are linearly and uniformly distributed in the middle of the disturbance device, and the spacing between the disturbance plates is 150 mm, with an included angle of 150 degrees.

[0010] Preferably, both the Venturi tube contraction section and the Venturi tube diffusion section are frustum structures.

[0011] Compared with the prior art, this utility model provides an enhanced absorption desulfurization dry reaction tower, which has the following beneficial effects:

[0012] 1. This enhanced absorption desulfurization dry reaction tower, by adding a rectifier, allows the flue gas to collide and integrate within the rectifier, adjusting the chaotic flue gas before entering the Venturi tube to flow vertically upward, and integrating the poor flue gas velocity distribution before entering the Venturi tube to a relatively uniform level.

[0013] 2. This enhanced absorption desulfurization dry reaction tower changes the direction of flue gas by adding a disturbance device, causing the flue gas and absorbent to collide violently at this location and mix thoroughly. This greatly increases the mixing effect and further improves the desulfurization efficiency and absorbent utilization rate. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a top view of the rectifier device of this utility model;

[0016] Figure 3 This is a cross-sectional view of the rectifier device of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the disturbance device of this utility model.

[0018] In the diagram: 1. Ninety-degree bend; 2. Rectifier; 3. Venturi tube contraction section; 4. Venturi tube nozzle; 5. Venturi tube diffuser section; 6. Disturbance device; 7. Tower body; 201. Rectifier plate; 601. Disturbance plate; 701. Smoke exhaust port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-4As shown, this utility model provides a technical solution: a dry reaction tower for enhanced absorption desulfurization, including a 90-degree bend 1, a rectifier 2 fixedly installed on the top of the 90-degree bend 1, a rectifier plate 201 arranged in the middle of the rectifier 2, a venturi tube contraction section 3 fixedly connected to the end of the rectifier 2 away from the 90-degree bend 1, a venturi tube nozzle 4 fixedly connected to the end of the venturi tube contraction section 3 away from the rectifier 2, a venturi tube diffuser section 5 fixedly connected to the end of the venturi tube nozzle 4 away from the venturi tube contraction section 3, a disturbance device 6 fixedly connected to the end of the venturi tube diffuser section 5 away from the venturi tube nozzle 4, a disturbance plate 601 arranged in the middle of the disturbance device 6, a tower body 7 fixedly connected to the end of the disturbance device 6 away from the venturi tube diffuser section 5, and a flue gas outlet 701 arranged on the top of the tower body 7.

[0021] Furthermore, the rectifier plate 201 forms a 15 mm × 15 mm small square in the middle of the rectifier device 2, and the height of the rectifier plate 201 is 100 mm.

[0022] The above technical solution facilitates the adjustment of the chaotic and disorderly harmful flue gas before it enters the Venturi tube into a vertically upward flow.

[0023] Furthermore, the disturbance plates 601 are linearly and uniformly distributed in the middle of the disturbance device 6, and the spacing between the disturbance plates 601 is 150 mm, with an included angle of 150 degrees.

[0024] The above technical solution allows the harmful fumes and absorbent to collide violently at this location, resulting in thorough mixing.

[0025] Furthermore, both the Venturi tube contraction section 3 and the Venturi tube diffusion section 5 are frustum structures.

[0026] The above technical solution facilitates the full contact between harmful flue gas and the absorbent inside the Venturi tube vent 4 when the harmful flue gas enters the venturi tube vent 4, and facilitates the rapid diffusion of harmful flue gas, preventing the harmful flue gas from accumulating inside the venturi tube vent 4.

[0027] Working principle: First, when the sulfur-containing flue gas is horizontally discharged into the 90-degree bend pipe 1, the sulfur-containing flue gas enters the Venturi tube upward. After passing through the rectifier device 2 at the inlet of the Venturi tube contraction section 3, the originally chaotic sulfur-containing flue gas is adjusted to flow vertically upward. It is sent into the Venturi tube nozzle 4 and mixed with the injected absorbent before continuing to flow upward. Then it comes into contact with the disturbance device 6 at the outlet of the Venturi tube diffusion section 5. After being violently collided and fully mixed in the disturbance device 6, it is sent into the upper tower body 7 to react with the sulfur dioxide in the flue gas, thereby removing the sulfur dioxide from the flue gas. Finally, the purified flue gas is discharged from the tower body 7 through the exhaust port 701.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fortified absorption desulphurization dry reaction tower comprising a ninety degree elbow bend (1) characterized in that: The ninety-degree angle elbow pipe (1) top fixed mounting has rectifier device (2), the rectifier device (2) middle is provided with rectifier plate (201), the rectifier device (2) away from ninety-degree angle elbow pipe (1) one end is fixedly connected with venturi pipe contraction section (3), the venturi pipe contraction section (3) is fixedly connected with venturi pipe throat (4) away from rectifier device (2) one end, the venturi pipe throat (4) is fixedly connected with venturi pipe diffusion section (5) away from venturi pipe contraction section (3) one end, the venturi pipe diffusion section (5) is fixedly connected with disturbance device (6) away from venturi pipe throat (4) one end, the disturbance device (6) middle is provided with disturbance plate (601), the disturbance device (6) is fixedly connected with tower body (7) away from venturi pipe diffusion section (5) one end, the tower body (7) top is provided with smoke outlet (701).

2. The enhanced absorption desulphurization dry reaction tower according to claim 1, characterized in that: The rectifier plate (201) forms fifteen millimeters × fifteen millimeters small square in the middle of the rectifier device (2), and the height of the rectifier plate (201) is one hundred millimeters.

3. The enhanced absorption desulfurization dry reaction tower according to claim 1, characterized in that: The disturbance plate (601) is linearly and uniformly distributed in the middle of the disturbance device (6), and the pitch of the disturbance plate (601) is one hundred and fifty millimeters, and the included angle is one hundred and fifty degrees.

4. The enhanced absorption desulfurization dry reaction tower according to claim 1, characterized in that: The venturi pipe contraction section (3) and the venturi pipe diffusion section (5) are both circular truncated cone structures.

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