A flue gas purification device used in the flue of a thermal power plant

Abstract

The present invention relates to a flue gas purification device for use in a flue of a thermal power plant, comprising a shell, a support rod symmetrically arranged at the bottom of the shell, a blocking device arranged on the support rod, a rotating tube arranged on the inner side wall of the shell, a receiving frame arranged on the rotating tube, and a nozzle arranged on the receiving frame; one end of the rotating tube passes through the shell and is provided with a motor, the other end of the rotating tube is provided with a rotating sleeve for rotation connection, the rotating sleeve is arranged on the side wall of the shell, and the other end of the rotating sleeve is provided with a liquid injection pipe. In the present invention, smoke and dust can be separated after the smoke passes through the blocking device, and the flow field distribution of the smoke remains stable and uniform. The rotating tube drives the nozzle to rotate, so that the sprayed liquid medicine is fully contacted and reacted with the smoke, thereby increasing its treatment effect and efficiency. The heating device can heat the water mist mixed with the smoke and the medicine, thereby increasing its reaction rate.

Description

Technical Field

[0001] The present invention relates to the field of flue gas purification, in particular to a flue gas purification device used in a flue of a thermal power plant. Background Art

[0002] With the continuous development of industry, the various fuels used in industrial production are also increasing. In particular, fossil fuels in power plants have become the main source of air pollution today. The emergence of smog not only brings many inconveniences to people's travel, but more seriously, it also damages people's health.

[0003] Currently, many treatment devices installed in the flue of thermal power plants do not treat the flue gas thoroughly, and the reaction between the sprayed chemicals and the flue gas is incomplete, resulting in the flue gas emissions not meeting the standards.

[0004] Patent No. CN202220832544.4 discloses a drug injection device for treating flue gas from a coke oven, including a lower fixed square cover, which is arranged below the fixed block, and a connecting threaded block is provided on the upper end of the lower fixed square cover, and a buffer cushion is provided on the upper end of the connecting threaded block, and a drug receiving box is provided above the buffer cushion, and a submersible pump is provided below the inside of the drug receiving box, and the submersible pump is welded to the drug receiving box, and a connecting water pipe is provided on the upper end of the submersible pump, and a distance sensor is provided above the inside of the fixed block, and the distance sensor is fixedly connected to the fixed block through a card slot, and the distance sensor is electrically connected to the submersible pump. Injecting drugs internally will not react fully with the flue gas. For example, Patent No. CN201821924929.3 discloses a flue gas treatment device, which does not increase the reaction speed recording method, resulting in low efficiency. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a purification device which can well treat the flue gas in the flue of a power plant.

[0006] The technical solutions of the present invention are as follows:

[0007] The present invention comprises a shell, a support rod symmetrically arranged at the bottom of the shell, a blocking device arranged on the support rod, a rotating tube arranged on the inner side wall of the shell, a receiving frame arranged on the rotating tube, and a nozzle arranged on the receiving frame;

[0008] One end of the rotating tube passes through the shell and is provided with a motor, the other end of the rotating tube is provided with a rotating sleeve rotatably connected, the rotating sleeve is provided on the side wall of the shell, and the other end of the rotating sleeve is provided with a liquid injection pipe;

[0009] A heating device is provided in the shell and is above the rotating tube.

[0010] Furthermore, the blocking device includes a fixed column arranged on the support rod, a wave-shaped blocking piece symmetrically arranged on the fixed column, an extended end arranged at the end of the fixed column and passing through the support rod, a connecting block arranged on the side wall of the support rod, and a sliding block arranged on the connecting block;

[0011] A fixing nut is threadedly connected to the sliding block, and the fixing nut is also threadedly matched with the protruding end.

[0012] Furthermore, the heating device includes a first heating sleeve arranged in the housing, a second heating sleeve arranged in the first heating sleeve, and a connecting shaft arranged in the housing;

[0013] The connecting shaft is fixedly connected to the housing, the first heating sleeve and the second heating sleeve.

[0014] Furthermore, at least two blocking devices are provided.

[0015] Furthermore, a mounting plate is provided on the side wall of the shell.

[0016] Furthermore, at least two receiving racks are provided.

[0017] Furthermore, the nozzle is made of a material resistant to smoke corrosion.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, smoke and dust can be separated after the smoke passes through the blocking device, and the flow field distribution of the smoke remains stable and uniform. The rotating tube drives the nozzle to rotate, so that the sprayed liquid medicine and the smoke are fully contacted and reacted, thereby increasing its treatment effect and efficiency. The heating device can heat the water mist mixed with the smoke and the medicine to increase its reaction rate.

[0020] 2. In the present invention, the angle of the blocking device can be adjusted to adapt to smoke with different flow rates.

[0021] 3. In the present invention, the heating device is composed of a first heating sleeve and a second heating sleeve, and the flue gas passes through the gap between the first heating sleeve and the second heating sleeve, so the heating efficiency is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the other side of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the heating device of the present invention;

[0025] Figure 4It is a schematic structural diagram of the blocking device of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the connecting block, the protruding end, the blocking piece, the fixing nut and the sliding block of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the rotating tube, motor, receiving frame and spray nozzle of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the fixed rotating sleeve and the liquid injection pipe of the present invention.

[0029] in, Figures 1 to 7 The reference numerals and component names are as follows:

[0030] 1. Shell; 101. First heating sleeve; 102. Second heating sleeve; 103. Connecting shaft; 2. Rotating tube; 201. Motor; 202. Support frame; 203. Nozzle; 204. Rotating sleeve; 205. Injection tube; 3. Support rod; 301. Fixed column; 302. Connecting block; 303. Extending end; 304. Baffle; 305. Fixing nut; 306. Sliding block; 4. Mounting plate. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0033] Example 1

[0034] According to an embodiment provided by the present invention, it includes a shell 1, a support rod 3, a blocking device and a heating device. The shell 1 is made of a material resistant to smoke corrosion as a whole. The shell 1 is fixedly installed in the flue. The support rod 3 is symmetrically welded on the bottom surface of the shell 1. The blocking device is installed on the support rod 3. When the smoke flows upward, it is conducive to the collision and separation of smoke dust in the smoke through the blocking device; the harmful substances in the smoke are treated by reacting with the agent, wherein the agent is sprayed out through the rotating tube 2, the receiving frame 202 and the nozzle 203. The rotating tube 2 is installed on the inner wall of the shell 1 and is connected to the cross-shaped receiving frame 20 The nozzles 203 are evenly mounted on the receiving frame 202. One end of the rotating tube 2 passes through the side wall of the shell 1 and is rotatably connected thereto. The end is fixedly connected to the rotating shaft of the motor 201. The other end of the rotating tube 2 is connected to the rotating sleeve 204 and is rotatably connected thereto. The rotating sleeve 204 is fixedly connected to the side wall of the shell 1. When the motor 201 rotates, it drives the rotating rod to rotate, and at the same time, the nozzles 203 spray the liquid medicine. The contact area with the smoke is increased by rotating the spraying agent. The other end of the rotating sleeve 204 is connected to the injection pipe 205. The injection pipe 205 is located outside the shell 1. The liquid medicine is replenished in the rotating tube 2 by connecting the injection pipe 205.

[0035] It should be noted that, since the entire device is fixed in the flue, the motor 201 is embedded in the side wall of the flue, the pipe connected to the injection pipe 205 is also installed on the inner wall of the flue, and at least two receiving frames 202 are provided.

[0036] After the liquid medicine is sprayed, the flue gas will react with it. As the flue gas circulates upward, it will be mixed with the liquid medicine mist and will rise upward, resulting in an incomplete reaction. For this reason, a heating device is installed inside the shell 1. The heating device is above the rotating tube 2. The heating device can heat the mixture of flue gas and the medicine mist, which can not only accelerate the reaction rate, but also dry the flue gas. The heating device is composed of a first heating sleeve 101, a second heating sleeve 102 and a connecting shaft 103. The first heating sleeve 101 is inside the shell 1, and the second heating sleeve 102 is inside the first heating sleeve 101. The flue gas passes between the shell 1 and the first heating sleeve 101, between the first heating sleeve 101 and the second heating sleeve 102, and inside the second heating sleeve 102, and the passing flue gas is heated by heating. It should be noted that the reaction rate of most flue gas treatment reactions can be accelerated by heating, such as desulfurization.

[0037] The connecting shaft 103 is fixedly connected to the housing 1, the first heating sleeve 101 and the second heating sleeve 102, and plays the role of fixing the three. Two connecting shafts 103 can be provided to make it more stable.

[0038] Among them, the blocking device includes a fixed column 301 and a baffle 304. The fixed column 301 is set on the support rod 3. Between the symmetrically arranged support rods 3, the baffle is symmetrically arranged in a wave shape on the side wall of the fixed column 301. When the smoke flows upward through the baffle 304, it will hit the baffle 304, so that the smoke and dust are separated, and the flow field distribution of the smoke remains stable and uniform.

[0039] In actual use, at least two blocking devices are provided to achieve the best effect; the material of the nozzle 203 can be selected to be resistant to smoke corrosion to increase its service life.

[0040] Example 2

[0041] This embodiment is a further extension of the above embodiment. According to the different flow rates of smoke, the blocking device should adjust the angle accordingly, so that the angle of collision between the block and the smoke changes. To adapt to different flow rates, the angle adjustment method is composed of an extended end 303, a connecting block 302 and a sliding block 306. The fixed column 301 is rotatably connected to the support plate, the extended end 303 is fixedly connected to the end of the fixed column 301, and the side wall of the support rod 3 is rotatably connected. The connecting block 302 is fixedly welded on the side wall of the support rod 3, and the sliding block 306 is slidably connected on the connecting block 302. A fixing nut 305 is threadedly connected to 306, and the screw nut also cooperates with the thread of the protruding end 303. When the angle needs to be adjusted, the fixing column 301 is rotated to make the blocking piece 304 reach a suitable angle, and then the fixing nut 305 is screwed into the sliding block 306. Then, the sliding block 306 is slid to find the position where the protruding end 303 can be tightened, and the fixing nut 305 is screwed into the protruding end 303. Finally, the sliding block 306 is slid into the extreme position of the protruding end 303. The fixing nut 305 firmly connects the sliding block 306 and the protruding end 303, thereby fixing the fixing column 301.

[0042] Example 3

[0043] This embodiment is a further extension of the above embodiment. The entire shell 1 is fixed in the flue. In order to make it firmly fixed, a mounting plate 4 is fixedly connected to the outer wall of the shell 1. By installing a fixing bolt on the mounting plate 4 and then fixing the fixing bolt to the side wall in the flue, the mounting plate 4 can not only stabilize the whole, but also prevent damage to the shell 1 when installing the fixing bolt.

[0044] The workflow of the present invention is as follows:

[0045] After the entire device is fixed to the flue, the flue gas will flow upward and first pass through the blocking device. After the flue gas hits the block, the flow field distribution of the flue gas is kept stable and uniform. Then the flue gas enters the shell 1, passes through the rotating tube 2, and the motor 201 drives the rotating tube 2 to rotate, and the original flue gas of the agent is sprayed out through the nozzle 203 for reaction. The flue gas continues to flow upward and enters the heating device, accelerating the reaction rate of the mixed mist of smoke and agent, while also drying the flue gas, and finally discharged from the top of the shell 1.

[0046] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", and "center" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0047] At present, the technical solution of the present invention has been put into pilot production, that is, a smaller-scale experiment before the product is put into large-scale mass production; after the pilot production was completed, a user usage survey was carried out on a small scale, and the survey results showed that user satisfaction was high; now preparations are being made for the formal production and industrialization of the product (including intellectual property risk warning surveys).

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flue gas purification device for use in a flue of a thermal power plant, characterized in that: It comprises a shell (1), a support rod (3) symmetrically arranged at the bottom of the shell (1), a blocking device arranged on the support rod (3), a rotating tube (2) arranged on the inner side wall of the shell (1), a receiving frame (202) arranged on the rotating tube (2), and a spray head (203) arranged on the receiving frame (202); One end of the rotating tube (2) passes through the housing (1) and is provided with a motor (201); the other end of the rotating tube (2) is provided with a rotating sleeve (204) that is rotatably connected; the rotating sleeve (204) is provided on the side wall of the housing (1); and the other end of the rotating sleeve (204) is provided with a liquid injection pipe (205); A heating device is provided in the housing (1), and the heating device is above the rotating tube (2); The blocking device comprises a fixing column (301) arranged on the support rod (3), a wave-shaped blocking piece (304) symmetrically arranged on the fixing column (301), an extended end (303) arranged at the end of the fixing column (301) and passing through the support rod (3), a connecting block (302) arranged on the side wall of the support rod (3), and a sliding block (306) arranged on the connecting block (302); The sliding block (306) is threadedly connected with a fixing nut (305), and the fixing nut (305) is also threadedly matched with the protruding end (303).

2. The flue gas purification device for use in a flue of a thermal power plant according to claim 1, characterized in that: The heating device comprises a first heating sleeve (101) arranged in a housing (1), a second heating sleeve (102) arranged in the first heating sleeve (101), and a connecting shaft (103) arranged in the housing (1); The connecting shaft (103) is fixedly connected to the housing (1), the first heating sleeve (101) and the second heating sleeve (102).

3. The flue gas purification device for use in a flue of a thermal power plant according to claim 1, characterized in that: At least two blocking devices are provided.

4. The flue gas purification device for use in a flue of a thermal power plant according to claim 1, characterized in that: The side wall of the housing (1) is provided with a mounting plate (4).

5. The flue gas purification device for use in a flue of a thermal power plant according to claim 1, characterized in that: At least two receiving frames (202) are provided.

6. The flue gas purification device for use in a flue of a thermal power plant according to claim 1, characterized in that: The nozzle (203) is made of a material resistant to smoke corrosion.

Images