Device for efficiently desulfurizing and denitrifying flue gas

Abstract

The utility model discloses a device for efficiently desulfurizing and denitrating flue gas, which belongs to the technical field of waste gas treatment and comprises a plurality of waste gas treatment channels which are sequentially connected in series, each waste gas treatment channel comprises a channel pipe body, and a filter element is arranged in the middle of each channel pipe body. The filter element is connected into the channel pipe body from the top of the channel pipe body in an inserted mode, a connecting plate is arranged below the bottom of the filter element, the lower end of the connecting plate is fixedly connected with the inner wall of the bottom of the channel pipe body, an atomization mechanism is transversely connected to the middle of the connecting plate, and a liquid drainage branch pipe is arranged at the bottom of the channel pipe body. The lower end of the liquid discharge branch pipe is connected with a liquid discharge main pipe, the left side of the waste gas treatment channel at the leftmost end is provided with a sealing plate, and the upper part of the waste gas treatment channel at the leftmost end is fixedly communicated with a waste gas inlet.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a device for efficient desulfurization and denitrification of flue gas. Background Technology

[0002] Desulfurization and denitrification of waste gas mainly target sulfur dioxide (SO2) and nitrogen oxides (NOx) in the waste gas. x The process involves treating the sulfur dioxide and nitrogen oxides. Commonly used desulfurization and denitrification technologies include wet desulfurization and dry desulfurization.

[0003] Wet desulfurization and denitrification technology utilizes alkaline absorbents to react with SO2 and nitrogen oxides (NOx) in flue gas. x The reaction occurs, producing water-soluble sulfates, sulfites, nitrates, and nitrites, which are eventually discharged in liquid form.

[0004] Wet desulfurization and denitrification technologies often use spraying to react alkaline solutions with SO2 and nitrogen oxides (NOx) in the waste gas. x The reaction occurs, which generates a large amount of wastewater and consumes a lot of water resources. The method of using microporous aeration to discharge gas into an alkaline solution results in a decrease in the concentration of the alkaline solution over time, leading to a decrease in efficiency and an unstable efficiency in desulfurization and denitrification of waste gas. Therefore, a device that can save water resources and achieve efficient desulfurization and denitrification is needed. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a device for efficient desulfurization and denitrification of flue gas.

[0006] The technical solution of this utility model is: a device for efficient desulfurization and denitrification of flue gas, comprising multiple waste gas treatment channels connected in series. Each waste gas treatment channel includes a channel tube, a filter element is provided in the middle of the channel tube, the filter element is inserted into the inside of the channel tube from the top, a connecting plate is provided below the bottom of the filter element, the lower end of the connecting plate is fixedly connected to the bottom inner wall of the channel tube, an atomizing mechanism is horizontally connected in the middle of the connecting plate, a drain branch pipe is provided at the bottom of the channel tube, the lower end of the drain branch pipe is connected to the drain main pipe, a sealing plate is provided on the left side of the leftmost waste gas treatment channel, and a waste gas inlet is fixedly connected above the leftmost waste gas treatment channel.

[0007] Furthermore, the atomizing mechanism includes an atomizing tube, an atomizer is provided on the left side of the atomizing tube, the atomizing tubes in two adjacent exhaust gas treatment channels are connected, the outer wall of the sealing plate is fixedly connected to a liquid accumulation tank for communicating with the atomizing tube, and the right end of the atomizing tube in the rightmost exhaust gas treatment channel is closed.

[0008] Explanation: The atomizer atomizes the adsorbent liquid inside the atomizing tube. The atomized adsorbent liquid reacts with the exhaust gas to achieve the purpose of desulfurization and denitrification of the exhaust gas.

[0009] Furthermore, the atomizer includes an atomizing chamber, the lower part of which is fixedly connected to the upper surface of the atomizing tube, an ultrasonic oscillating plate is fixedly connected inside the atomizing chamber, a liquid suction tube is fixedly connected to the lower part of the atomizing chamber, a liquid suction pump is fixedly connected to the lower end of the liquid suction tube, the bottom of the liquid suction pump is fixedly connected to the bottom inner wall of the atomizing tube, and a spray nozzle is provided at the top of the atomizing chamber.

[0010] Note: The adsorbent in the atomizing tube is delivered to the atomizing chamber by a suction pump. This design prevents the adsorbent from overflowing directly from the atomizing chamber, thus avoiding waste.

[0011] Furthermore, the filter element includes a connecting frame, and multiple layers of filter cloth are fixedly connected inside the connecting frame; a sealing plate is fixedly connected to the top of the connecting frame, and the sealing plate is installed on the top of the channel tube by screws.

[0012] Explanation: The reacted adsorbent is trapped by the filter cloth on the filter element. After the reacted adsorbent collects on the filter cloth, it falls to the bottom of the channel tube and is finally discharged through the drain branch pipe.

[0013] Furthermore, a blower is fixedly connected to the right side of the rightmost exhaust gas treatment channel.

[0014] Explanation: The exhaust gas speed is controlled by the exhaust fan, which provides power for the exhaust gas to pass through the filter cloth.

[0015] The beneficial effects of this utility model are:

[0016] This invention uses atomized adsorption liquid to purify sulfur-containing and nitrogen-containing gases in waste gas. The atomized adsorption liquid can increase the contact area with the waste gas, thereby improving the efficiency of desulfurization and denitrification. Using atomized adsorption liquid can save water resources. This invention uses a pipeline to be laid flat on the ground, which is convenient for construction and reduces the cost of waste gas treatment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of a single waste gas treatment channel of this utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure between the atomizer and the atomizing tube of this utility model.

[0020] Figure 4This is a left view of the filter element of this utility model.

[0021] Among them, 1-exhaust gas treatment channel, 11-channel pipe body, 12-filter element, 13-connecting plate, 14-atomizing mechanism, 15-drainage branch pipe, 2-drainage main pipe, 3-sealing plate, 4-exhaust gas inlet, 141-atomizing pipe, 142-atomizer, 143-liquid collection tank, 1421-atomizing chamber, 1422-ultrasonic oscillating plate, 1423-liquid suction pipe, 1424-liquid suction pump, 1425-spray nozzle, 121-connecting frame, 122-filter cloth, 123-sealing plate, 5-exhaust fan. Detailed Implementation

[0022] Example 1:

[0023] like Figure 1 , Figure 2 As shown, a device for efficient desulfurization and denitrification of flue gas includes multiple waste gas treatment channels 1 connected in series. Each waste gas treatment channel 1 includes a channel body 11, with a filter element 12 in the middle of the channel body 11. The filter element 12 is inserted into the channel body 11 from the top. A connecting plate 13 is provided below the bottom of the filter element 12. The lower end of the connecting plate 13 is fixedly connected to the bottom inner wall of the channel body 11. An atomizing mechanism 14 is horizontally connected in the middle of the connecting plate 13. A drain branch pipe 15 is provided at the bottom of the channel body 11. The lower end of the drain branch pipe 15 is connected to a drain main pipe 2. A sealing plate 3 is provided on the left side of the leftmost waste gas treatment channel 1. An waste gas inlet 4 is fixedly connected above the leftmost waste gas treatment channel 1.

[0024] The atomizing mechanism 14 includes an atomizing tube 141, an atomizer 142 is provided on the left side of the atomizing tube 141, the atomizing tubes 141 in two adjacent exhaust gas treatment channels 1 are connected, the outer wall of the sealing plate 3 is fixedly connected to a liquid accumulation tank 143 for communicating with the atomizing tube 141, and the right end of the atomizing tube 141 in the rightmost exhaust gas treatment channel 1 is closed.

[0025] The atomizer 142 atomizes the adsorbent in the atomizing tube 141, and the atomized adsorbent reacts with the exhaust gas to achieve the purpose of desulfurization and denitrification of the exhaust gas.

[0026] like Figure 3 As shown, the atomizer 142 includes an atomizing chamber 1421. The lower part of the atomizing chamber 1421 is fixedly connected to the upper surface of the atomizing tube 141. An ultrasonic oscillating plate 1422 is fixedly connected inside the atomizing chamber 1421. A liquid suction tube 1423 is fixedly connected to the lower part of the atomizing chamber 1421. A liquid suction pump 1424 is fixedly connected to the lower end of the liquid suction tube 1423. The bottom of the liquid suction pump 1424 is fixedly connected to the bottom inner wall of the atomizing tube 141. A spray nozzle 1425 is provided at the top of the atomizing chamber 1421.

[0027] The adsorbent in the atomizing tube 141 is transported to the atomizing chamber 1421 by the suction pump 1424. This design can prevent the adsorbent from overflowing directly from the atomizing chamber 1421, thus avoiding waste of the adsorbent.

[0028] like Figure 4 As shown, the filter element 12 includes a connecting frame 121, and multiple layers of filter cloth 122 are fixedly connected inside the connecting frame 121. The filter cloth 122 is made of 18-mesh gauze. A sealing plate 123 is fixedly connected to the top of the connecting frame 121. The sealing plate 123 is installed on the top of the channel tube 11 by screws.

[0029] The reacted adsorbent is trapped by the filter cloth 122 on the filter element 12. After the reacted adsorbent is collected on the filter cloth 122, it falls into the bottom of the channel tube 11 and is finally discharged through the drain branch pipe 15.

[0030] Example 2:

[0031] Based on Example 1, Example 2 differs from Example 1 in that an exhaust fan 5 is fixedly connected to the right side of the rightmost exhaust gas treatment channel 1.

[0032] In Example 2, the exhaust gas speed is controlled by the exhaust fan 5, providing power for the exhaust gas to pass through the filter cloth 122. Therefore, Example 2 has a better performance than Example 1.

[0033] The working method of the above embodiment 2 includes the following steps:

[0034] S1. Exhaust gas enters the channel pipe 11 through exhaust gas inlet 4. Adsorbent liquid flows from liquid collection tank 143 into atomizing pipe 141, and is then sucked into suction pipe 1423 by suction pump 1424. Finally, it enters atomizing chamber 1421. The adsorbent liquid is atomized under the action of ultrasonic oscillating plate 1422, and then discharged from atomizing port 1425 into channel pipe 11 to mix with exhaust gas to form mixed gas.

[0035] S2. The mixed gas passes through the filter element 12. The atomized adsorbent in the mixed gas is intercepted by the filter cloth 122 and accumulates on the filter cloth 122 before dripping onto the bottom of the channel tube 11. Then it flows from the drain branch pipe 15 into the drain main pipe 2 and is finally discharged from the drain main pipe 2.

[0036] S3. The exhaust gas, after being treated by multiple exhaust gas treatment channels 1, is discharged under the suction of the exhaust fan 5.

[0037] In the above embodiments, the ultrasonic oscillating plate 1422, the liquid suction pump 1424, and the exhaust fan 5 are all commercially available products. As long as they can achieve the function of this utility model, they are acceptable. Those skilled in the art can choose to use them based on common sense, and no special limitations are made here.

Claims

1. A device for efficient desulfurization and denitrification of flue gas, characterized in that, It includes multiple exhaust gas treatment channels (1), which are connected in series. Each exhaust gas treatment channel (1) includes a channel tube (11). A filter element (12) is provided in the middle of the channel tube (11). The filter element (12) is inserted into the channel tube (11) from the top. A connecting plate (13) is provided below the bottom of the filter element (12). The lower end of the connecting plate (13) is fixedly connected to the bottom inner wall of the channel tube (11). An atomizing mechanism (14) is horizontally connected in the middle of the connecting plate (13). A drain branch pipe (15) is provided at the bottom of the channel tube (11). The lower end of the drain branch pipe (15) is connected to the drain main pipe (2). A sealing plate (3) is provided on the left side of the leftmost exhaust gas treatment channel (1). An exhaust gas inlet (4) is fixedly connected above the leftmost exhaust gas treatment channel (1).

2. The device for efficient desulfurization and denitrification of flue gas as described in claim 1, characterized in that, The atomizing mechanism (14) includes an atomizing tube (141), an atomizer (142) is provided on the left side of the atomizing tube (141), the atomizing tubes (141) in two adjacent exhaust gas treatment channels (1) are connected, the outer wall of the sealing plate (3) is fixedly connected with a liquid accumulation tank (143) for connecting with the atomizing tube (141), and the right end of the atomizing tube (141) in the rightmost exhaust gas treatment channel (1) is closed.

3. The device for efficient desulfurization and denitrification of flue gas as described in claim 2, characterized in that, The atomizer (142) includes an atomizing chamber (1421), an ultrasonic oscillating plate (1422) is fixedly connected inside the atomizing chamber (1421), a liquid suction tube (1423) is fixedly connected to the bottom of the atomizing chamber (1421), a liquid suction pump (1424) is fixedly connected to the lower end of the liquid suction tube (1423), the bottom of the liquid suction pump (1424) is fixedly connected to the bottom inner wall of the atomizing tube (141), and a spray nozzle (1425) is provided at the top of the atomizing chamber (1421).

4. The device for efficient desulfurization and denitrification of flue gas as described in claim 1, characterized in that, The filter element (12) includes a connecting frame (121), and multiple layers of filter cloth (122) are fixedly connected inside the connecting frame (121); a sealing plate (123) is fixedly connected to the top of the connecting frame (121), and the sealing plate (123) is installed on the top of the channel tube (11) by screws.

5. The device for efficient desulfurization and denitrification of flue gas as described in claim 1, characterized in that, A blower (5) is fixedly connected to the right side of the exhaust gas treatment channel (1) at the far right end.

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