Flue gas desulfurization and denitrification treatment device

Abstract

The utility model discloses a flue gas desulfurization and denitrification treatment device which comprises a desulfurization mechanism, and a transmission mechanism is arranged in the desulfurization mechanism; the desulfurization mechanism comprises a desulfurization box, a desulfurization tank and a conveying pump, a blocking net is fixed to the inner wall of the desulfurization box, the top of the desulfurization box communicates with a conveying pipe, the surface of the desulfurization tank communicates with a liquid adding pipe, a first motor is fixed to the surface of the desulfurization tank, and an output shaft of the first motor penetrates into the desulfurization tank and is fixedly provided with a stirring rod; the surface of the delivery pump is communicated with a liquid guide pipe, one end of the liquid guide pipe penetrates into the desulfurization tank and is fixedly provided with a rotary joint, a spraying pipe is fixed at the bottom of the rotary joint, the surface of the spraying pipe is communicated with a spray head, and a partition plate is fixed above the inner wall of the desulfurization tank. The flue gas desulfurization device has the advantage of having a better desulfurization effect on flue gas, and solves the problems of single flue gas desulfurization treatment mode and poorer desulfurization effect in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a flue gas desulfurization and denitrification treatment device. Background Art

[0002] Flue gas desulfurization and denitrification technology is a boiler flue gas purification technology used in the chemical industry that produces a lot of nitrogen oxides and sulfur oxides. Nitrogen oxides and sulfur oxides are one of the main sources of air pollution, so the application of this technology has many benefits for environmental air purification. Known flue gas desulfurization and denitrification technologies include PAFP, ACFP, pyrolusite method, electron beam ammonia method, pulse corona method, gypsum wet method, catalytic oxidation method, microbial degradation method and other technologies.

[0003] In the desulfurization step, most of the existing flue gas desulfurization and denitrification devices only pass the flue gas through countercurrent contact with limestone slurry. SO2 is absorbed and reacts with calcium carbonate in the slurry to form calcium sulfite, which is further oxidized into calcium sulfate. However, the single flue gas countercurrent contact method has a poor desulfurization effect on the flue gas, is prone to incomplete desulfurization, and is difficult to meet purification needs. Utility Model Content

[0004] The utility model aims to provide a flue gas desulfurization and denitrification treatment device, which has the advantage of being able to achieve a better desulfurization effect on flue gas, and solves the problem that the current flue gas desulfurization treatment method is single and the desulfurization effect is poor.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas desulfurization and denitrification treatment device, comprising a desulfurization mechanism, wherein a transmission mechanism is arranged inside the desulfurization mechanism;

[0006] The desulfurization mechanism includes a desulfurization box, a desulfurization tank and a delivery pump. A barrier net is fixed to the inner wall of the desulfurization box, a delivery pipe is connected to the top of the desulfurization box, a liquid adding pipe is connected to the surface of the desulfurization tank, a first motor is fixed to the surface of the desulfurization tank, the output shaft of the first motor passes through the interior of the desulfurization tank and is fixed with a stirring rod, a liquid guide pipe is connected to the surface of the delivery pump, one end of the liquid guide pipe passes through the interior of the desulfurization tank and is fixed with a rotating joint, a spray pipe is fixed to the bottom of the rotating joint, a nozzle is connected to the surface of the spray pipe, and a partition plate is fixed above the inner wall of the desulfurization tank.

[0007] As a preferred flue gas desulfurization and denitrification treatment device of the utility model, the transmission mechanism includes a second motor, the second motor is fixed to the top of the partition plate, the second motor output shaft is fixed with a rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the desulfurization tank, a driving wheel is fixed to the surface of the rotating shaft, the surface of the driving wheel is connected to a driving wheel through a belt drive, and the driving wheel is fixed to the surface of the spray pipe.

[0008] As a preferred flue gas desulfurization and denitrification treatment device of the utility model, two cleaning doors are provided on the surface of the desulfurization box, the upper cleaning door is located above the blocking net, and the lower cleaning door is located below the blocking net.

[0009] As a preferred embodiment of the flue gas desulfurization and denitrification treatment device of the utility model, one-way valves are installed on the surfaces of the delivery pipe and the liquid adding pipe.

[0010] As a preferred embodiment of the flue gas desulfurization and denitrification treatment device of the utility model, a pipeline fan is installed on the surface of the conveying pipe.

[0011] As a preferred flue gas desulfurization and denitrification treatment device of the utility model, the liquid adding pipe is higher than the connection point between the conveying pipe and the desulfurization tank.

[0012] As a preferred flue gas desulfurization and denitrification treatment device of the utility model, a controller is fixed on the surface of the desulfurization box.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model provides a desulfurization mechanism to achieve a better desulfurization effect for the flue gas. The flue gas that has passed through the bag filter or the electrostatic precipitator can enter the desulfurization box. At this time, the flue gas will first fully contact with the activated carbon on the top of the barrier net. The activated carbon can adsorb sulfide in the flue gas to achieve a preliminary desulfurization process. Then the flue gas after preliminary desulfurization enters the desulfurization tank. Prior to this, the desulfurization slurry is first filled into the desulfurization tank through a liquid adding pipe, so that the flue gas can flow upward after passing through the desulfurization slurry. During this period, the desulfurization slurry will further desulfurize the flue gas. Then the flue gas will be transported upward, and the delivery pump will be connected to the external desulfurization slurry, so that the desulfurization slurry is input into the spray pipe through the liquid guide pipe and sprayed downward through the nozzle, so that the flue gas passes through the slurry spraying area many times during the rising process, which increases the absorption opportunity and helps the incompletely reacted SO2 to continue to be absorbed. Combined with the injection of flue gas into the slurry and the pre-desulfurization through the activated carbon, this multi-stage contact method is conducive to improving the desulfurization efficiency, thereby ensuring that the flue gas can achieve a comprehensive desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the desulfurization mechanism in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the transmission mechanism in the utility model.

[0019] In the figure: 1. desulfurization mechanism; 101. desulfurization box; 102. desulfurization tank; 103. barrier net; 104. delivery pipe; 105. liquid adding pipe; 106. first motor; 107. stirring rod; 108. delivery pump; 109. liquid guiding pipe; 110. rotary joint; 111. spray pipe; 112. nozzle; 113. partition plate; 114. pipeline fan; 2. transmission mechanism; 201. second motor; 202. rotating shaft; 203. driving wheel; 204. driving wheel; 3. controller. DETAILED DESCRIPTION

[0020] See also Figure 1-4 , a flue gas desulfurization and denitrification treatment device, comprising a desulfurization mechanism 1, wherein a transmission mechanism 2 is arranged inside the desulfurization mechanism 1;

[0021] The desulfurization mechanism 1 enables the flue gas to achieve a better desulfurization effect, and the transmission mechanism 2 is used to transmit the internal components of the desulfurization mechanism 1 .

[0022] The desulfurization mechanism 1 includes a desulfurization box 101, a desulfurization tank 102 and a delivery pump 108. A blocking net 103 is fixed to the inner wall of the desulfurization box 101, and activated carbon is piled above the blocking net 103. A delivery pipe 104 is connected to the top of the desulfurization box 101, and one end of the delivery pipe 104 is connected to the surface of the desulfurization tank 102. A liquid adding pipe 105 is connected to the surface of the desulfurization tank 102. A first motor 106 is fixed to the surface of the desulfurization tank 102, and the output shaft of the first motor 106 penetrates into the interior of the desulfurization tank 102. A stirring rod 107 is fixed thereon, a liquid guide tube 109 is connected to the surface of the delivery pump 108, one end of the liquid guide tube 109 penetrates into the interior of the desulfurization tank 102 and is fixed with a rotary joint 110, a spray pipe 111 is fixed to the bottom of the rotary joint 110, a nozzle 112 is connected to the surface of the spray pipe 111, a partition plate 113 is fixed above the inner wall of the desulfurization tank 102, a smoke exhaust pipe is connected to the top of the desulfurization tank 102, the smoke exhaust pipe penetrates the partition plate 113, and a solenoid valve is connected to the bottom of the desulfurization tank 102;

[0023] The flue gas passing through the bag filter or the electrostatic precipitator can enter the desulfurization box 101. At this time, the flue gas will first fully contact with the activated carbon on the top of the barrier net 103. The activated carbon can adsorb the sulfide in the flue gas to achieve a preliminary desulfurization process. After that, the flue gas after preliminary desulfurization enters the desulfurization tank 102. Before that, the desulfurization slurry is first filled into the desulfurization tank 102 through the liquid adding pipe 105, so that the flue gas can flow upward after passing through the desulfurization slurry. During this period, the desulfurization slurry will further desulfurize the flue gas. After that, the flue gas will be transported upward, and the delivery pump 108 is connected to the external desulfurization slurry, so that the desulfurization slurry is input into the spray pipe 111 through the liquid guide pipe 109, and passes through the nozzle 11 2 is sprayed downward, so that the flue gas passes through the slurry spraying area many times during the rising process, which increases the absorption opportunity and helps the incompletely reacted SO2 to continue to be absorbed. The flue gas is injected into the slurry and desulfurized by activated carbon in advance. This multi-stage contact method is beneficial to improving the desulfurization efficiency, thereby ensuring that the flue gas can obtain a comprehensive desulfurization effect. At the same time, the transmission mechanism 2 can drive the spray pipe 111 to rotate, so that the desulfurization liquid spray range is more comprehensive, and the desulfurization effect is improved. The desulfurized flue gas can be discharged into the subsequent denitrification equipment through the exhaust pipe on the top of the desulfurization tank 102, thereby entering the subsequent denitrification treatment, and opening the solenoid valve at the bottom of the desulfurization tank 102 can clean the inside of the desulfurization tank 102.

[0024] Further, the transmission mechanism 2 includes a second motor 201, the second motor 201 is fixed to the top of the partition plate 113, the output shaft of the second motor 201 is fixed with a rotating shaft 202, one end of the rotating shaft 202 is rotatably connected to the inner wall of the desulfurization tank 102, a driving wheel 203 is fixed on the surface of the rotating shaft 202, and the surface of the driving wheel 203 is connected to a driving wheel 204 through a belt drive, and the driving wheel 204 is fixed to the surface of the spray pipe 111;

[0025] The second motor 201 can drive the rotating shaft 202 to rotate, so that the driving wheel 203 can drive the spray pipe 111 to rotate through the driving wheel 204, thereby ensuring the normal rotation of the spray pipe 111.

[0026] Furthermore, two cleaning doors are provided on the surface of the desulfurization box 101, the upper cleaning door is located above the blocking net 103, and the lower cleaning door is located below the blocking net 103;

[0027] Opening the upper cleaning door can facilitate the replacement of the activated carbon on the surface of the barrier net 103, while opening the lower cleaning door can clean the impurities generated after desulfurization.

[0028] Furthermore, one-way valves are installed on the surfaces of the delivery pipe 104 and the liquid adding pipe 105;

[0029] The setting of the one-way valve prevents the desulfurization slurry from escaping from both sides of the desulfurization box 101.

[0030] Furthermore, a duct fan 114 is installed on the surface of the delivery pipe 104;

[0031] The duct fan 114 can ensure the normal circulation of the flue gas, so that the flue gas can enter the desulfurization tank 102 more quickly, thereby accelerating the desulfurization efficiency.

[0032] Furthermore, the liquid adding pipe 105 is higher than the connection point between the delivery pipe 104 and the desulfurization tank 102;

[0033] The flue gas entering through the delivery pipe 104 can enter the desulfurization slurry, thereby ensuring that the flue gas can be desulfurized.

[0034] Furthermore, a controller 3 is fixed on the surface of the desulfurization box 101, and the controller 3 is electrically connected to the delivery pump 108, the first motor 106, the second motor 201 and the pipeline fan 114;

[0035] The controller 3 can operate the delivery pump 108 , the first motor 106 , the second motor 201 and the duct fan 114 .

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flue gas desulfurization and denitrification treatment device, characterized in that: It comprises a desulfurization mechanism (1), wherein a transmission mechanism (2) is arranged inside the desulfurization mechanism (1); The desulfurization mechanism (1) comprises a desulfurization box (101), a desulfurization tank (102) and a delivery pump (108); a blocking net (103) is fixed on the inner wall of the desulfurization box (101); a delivery pipe (104) is connected to the top of the desulfurization box (101); a liquid adding pipe (105) is connected to the surface of the desulfurization tank (102); a first motor (106) is fixed on the surface of the desulfurization tank (102); an output shaft of the first motor (106) extends through the desulfurization tank (102); 102) and a stirring rod (107) is fixed inside the delivery pump (108), a liquid guide tube (109) is connected to the surface of the delivery pump (108), one end of the liquid guide tube (109) passes through the interior of the desulfurization tank (102) and is fixed with a rotating joint (110), a spray pipe (111) is fixed at the bottom of the rotating joint (110), a spray head (112) is connected to the surface of the spray pipe (111), and a partition plate (113) is fixed above the inner wall of the desulfurization tank (102).

2. A flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: The transmission mechanism (2) comprises a second motor (201), the second motor (201) is fixed to the top of the partition plate (113), a rotating shaft (202) is fixed to the output shaft of the second motor (201), one end of the rotating shaft (202) is rotatably connected to the inner wall of the desulfurization tank (102), a driving wheel (203) is fixed to the surface of the rotating shaft (202), the surface of the driving wheel (203) is connected to a driving wheel (204) via a belt drive, and the driving wheel (204) is fixed to the surface of the spray pipe (111).

3. A flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: The desulfurization box (101) has two cleaning doors on its surface, the upper cleaning door is located above the blocking net (103), and the lower cleaning door is located below the blocking net (103).

4. A flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: One-way valves are installed on the surfaces of the delivery pipe (104) and the liquid adding pipe (105).

5. The flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: A pipeline fan (114) is installed on the surface of the delivery pipe (104).

6. A flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: The liquid adding pipe (105) is higher than the connection point between the delivery pipe (104) and the desulfurization tank (102).

7. The flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: A controller (3) is fixed on the surface of the desulfurization box (101).

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