Desulfurization and denitrification monitoring pretreatment device

Abstract

The utility model relates to a desulfurization and denitrification monitoring pretreatment device which comprises a first fan, a second fan, a preprocessor, a control center and an audible and visual alarm, a gas inlet of the first fan is communicated with a gas inlet pipe, a gas outlet of the first fan is communicated with a first hose, and a gas inlet valve and a first gas sensor are arranged on the gas inlet pipe; the pre-processor comprises a base, a pre-processing barrel and a pre-processing box, a gas dispersing cover is arranged at the bottom of the pre-processing barrel, a gas collecting cover is arranged at the top of the pre-processing barrel, the small-diameter end of the gas dispersing cover is communicated with the first hose through a first quick connector, and the gas collecting cover is communicated with the second hose through a second quick connector; the small-diameter end of the gas collecting hood communicates with the left end of the bottom of the pretreatment box, and the right end of the bottom of the pretreatment box communicates with an exhaust pipe which communicates with a second hose through a second quick connector. The device can realize more efficient and high-quality activated carbon adsorption pretreatment, can effectively monitor, and is more practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of desulfurization and denitration, and particularly relates to a desulfurization and denitration monitoring pretreatment device. Background Art

[0002] At present, in the wet desulfurization and denitration treatment of industrial flue gas, it mainly includes pre-treatment and post-spray treatment. The pre-treatment is to remove dust, part of sulfur oxides and nitrogen oxides in the flue gas by adsorbents such as activated carbon first, so as to reduce the workload during the subsequent spray treatment and reduce the consumption of desulfurization and denitration liquid. However, in actual treatment, the rate of the flue gas passing through the activated carbon is relatively fast, and the activated carbon is in a static state, resulting in poor adsorption and purification effect of the activated carbon on the flue gas, low quality of the pre-treatment, and unable to meet the actual needs. In addition, with the increase of the working time, the activated carbon will gradually adsorb to saturation and cannot continue to carry out effective pre-treatment. At present, there is a lack of effective monitoring of the adsorption effect of the activated carbon, and the activated carbon cannot be replaced in time, which is not conducive to the post-treatment and needs to be improved. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a desulfurization and denitration monitoring pretreatment device, which can realize more efficient and high-quality activated carbon adsorption pretreatment and can carry out effective monitoring to solve the above problems.

[0004] To achieve the above object, the technical solution adopted by the present utility model is: a desulfurization and denitrification monitoring pretreatment device, including a first fan, a second fan, a preprocessor, a control center and an audible and visual alarm. The air inlet of the first fan is connected to an air inlet pipe, and the air outlet is connected to a first hose. An air inlet valve and a first gas sensor are provided on the air inlet pipe. The air inlet of the second fan is connected to a second hose, and the air outlet is connected to an air outlet pipe. An air outlet valve and a second gas sensor are provided on the air outlet pipe. The first gas sensor, the second gas sensor and the audible and visual alarm are all electrically connected to the control center. The preprocessor includes a base, a horizontal pretreatment cylinder fixedly installed on the base, and a pretreatment box fixedly installed on the top of the pretreatment cylinder. A gas dispersion cover is provided at the bottom of the pretreatment cylinder, and a gas collection cover is provided at the top. The small-diameter end of the gas dispersion cover is connected to the first hose through a first quick connector, and the large-diameter end is connected to the bottom of the pretreatment cylinder. The large-diameter end of the gas collection cover is connected to the top of the pretreatment cylinder, and the small-diameter end is connected to the left end of the bottom of the pretreatment box. A discharge pipe is connected to the right end of the bottom of the pretreatment box, and the discharge pipe is connected to the second hose through a second quick connector. A mesh cylinder is coaxially arranged in the pretreatment cylinder. The left and right ends of the mesh cylinder are rotatably connected to the pretreatment cylinder through rotating shafts, and the rotating shaft at the left end extends out of the pretreatment cylinder. A partition is vertically fixed on the middle section of the inner bottom of the pretreatment box. There is a gap between the top end of the partition and the inner top of the pretreatment box. A crankshaft is rotatably provided at the lower part of the partition. The crankshaft has two connecting rod journals located on the left and right sides of the partition respectively. Connecting rods are sleeved on both connecting rod journals. The top ends of both connecting rods are hinged with a mesh box. The mesh box abuts against the inner wall of the pretreatment box and the partition and can slide up and down. Activated carbon is filled in both the mesh cylinder and the mesh box. The left end of the crankshaft extends out of the pretreatment box, and driven gears are fixedly sleeved on both the rotating shaft extending out of the pretreatment cylinder and the crankshaft. A motor is fixedly installed between the pretreatment cylinder and the pretreatment box. A driving gear is fixedly sleeved on the output shaft of the motor. The driving gear is located between the two driven gears and is meshed with the two driven gears.

[0005] Preferably, the left and right ends of the outer bottom of the pretreatment cylinder are fixedly connected to the base through support plates.

[0006] Preferably, hydraulic cylinders are vertically fixed on the outer bottom of the pretreatment cylinder inside the support plates. The piston rods of the hydraulic cylinders face downwards and are fixedly connected to a lifting plate. The lifting plate is slidably sleeved on the support plates. Casters are installed on the front and rear sides of the bottom of the end of the lifting plate away from the corresponding hydraulic cylinder. When the piston rods of the hydraulic cylinders are in a retracted state, the bottom ends of the casters are higher than the bottom of the base.

[0007] Preferably, the base is made of aluminum foam.

[0008] The beneficial effects of the present utility model are as follows: During use, the intake pipe is connected to the flue gas discharge pipeline, and the outlet pipe is connected to the subsequent spray treatment device. Driven by the first fan and the second fan, the flue gas can enter the preprocessor through the intake pipe and the first hose for pretreatment, and then the pretreated flue gas is sent into the subsequent spray treatment device through the second hose and the outlet pipe for subsequent spray treatment. During the process, the first gas sensor can be used to monitor the concentrations of sulfur oxides and nitrogen oxides in the untreated flue gas in real time, and the second gas sensor can monitor the concentrations of sulfur oxides and nitrogen oxides in the pretreated flue gas in real time, and feedback the monitored information to the control center. As time goes by, the adsorption effect of the preprocessor gradually decreases, and the difference in the concentration information monitored by the two gas sensors will gradually decrease. When the difference is less than the set value, the control center can automatically control the activation of the audible and visual alarm for audible and visual warning to prompt the staff to replace the preprocessor in time. When replacing the preprocessor, the intake valve and the outlet valve can be closed first, and then the connection between the first hose and the air diffuser cover can be disconnected through the first quick connector, and the connection between the second hose and the exhaust pipe can be disconnected through the second quick connector, so that the preprocessor can be removed from the system, and then it can be moved away and another new preprocessor can be fetched. The first hose is connected to the air diffuser cover through the first quick connector, and the second hose is connected to the exhaust pipe through the second quick connector, and then the intake valve and the outlet valve are opened to continue using. In this way, real-time monitoring of the pretreatment can be achieved, enabling the staff to replace the preprocessor in a timely and convenient manner, and more importantly, ensuring the effect and quality of the desulfurization and denitrification pretreatment;

[0009] The working process of the preprocessor is as follows: When the motor runs, the rotating shaft and the crankshaft are driven to rotate through gear transmission. The rotation of the rotating shaft can drive the net cylinder to rotate, and the rotation of the crankshaft can drive the mesh boxes on both sides of the partition to move up and down reciprocally. The flue gas is first dispersed into the pretreatment cylinder through the air diffusing effect of the air diffuser cover and flows through the net cylinder from bottom to top, so that it can come into full contact with the activated carbon in the continuously rotating net cylinder. Moreover, the net cylinder can drive the flowing flue gas to swirl, extending the flue gas passing time, enabling the flue gas to better contact the activated carbon in the net cylinder, and thus greatly enhancing the adsorption effect. Then, the flue gas is collected and discharged through the air collecting effect of the air collecting cover and enters the pretreatment box on the left side of the partition, continuing to flow from bottom to top. After flowing through the mesh box on the left side of the partition, it enters the pretreatment box on the right side of the partition through the gap, changes the flow direction to flow from top to bottom, and is discharged through the exhaust pipe after flowing through the mesh box on the right side of the partition, making the flue gas flow in an inverted U shape in the pretreatment box as a whole, which can further extend the residence time of the flue gas. Moreover, the two groups of reciprocatingly moving mesh boxes not only make the activated carbon in them more evenly distributed and can contact the flue gas multiple times, but also cooperate with each other to be more conducive to the full contact and adsorption of the activated carbon in the mesh box with the flue gas, further effectively enhancing the adsorption effect, improving the overall adsorption pretreatment quality, and better meeting the actual requirements. Description of the Drawings

[0010] Figure 1 It is the front view structural schematic diagram of the utility model;

[0011] Figure 2 It is the front view structural schematic diagram of the preprocessor of the utility model.

[0012] The reference numerals in the figure: 1 is the first fan, 2 is the second fan, 3 is the preprocessor, 4 is the control center, 5 is the audible and visual alarm, 6 is the air inlet pipe, 7 is the first hose, 8 is the air inlet valve, 9 is the first gas sensor, 10 is the second hose, 11 is the air outlet pipe, 12 is the air outlet valve, 13 is the second gas sensor, 14 is the base, 15 is the pretreatment cylinder, 16 is the pretreatment box, 17 is the air diffuser hood, 18 is the air collector hood, 19 is the first quick connector, 20 is the exhaust pipe, 21 is the second quick connector, 22 is the mesh cylinder, 23 is the rotating shaft, 24 is the partition board, 25 is the crankshaft, 26 is the connecting rod journal, 27 is the connecting rod, 28 is the mesh box, 29 is the activated carbon, 30 is the driven gear, 31 is the motor, 32 is the driving gear, 33 is the support plate, 34 is the hydraulic cylinder, 35 is the lifting plate, 36 is the caster. Specific embodiments

[0013] The following further describes the present utility model in detail in conjunction with the accompanying drawings and specific embodiments:

[0014] Such as Figure 1 And 2As shown in the figure, a desulfurization and denitrification monitoring pretreatment device includes a first fan 1, a second fan 2, a preprocessor 3, a control center 4 and an audible and visual alarm 5. The air inlet of the first fan 1 is connected to an air inlet pipe 6, and the air outlet is connected to a first hose 7. An air inlet valve 8 and a first gas sensor 9 are provided on the air inlet pipe 6. The air inlet of the second fan 2 is connected to a second hose 10, and the air outlet is connected to an air outlet pipe 11. An air outlet valve 12 and a second gas sensor 13 are provided on the air outlet pipe 11. The first gas sensor 9, the second gas sensor 13 and the audible and visual alarm 5 are all electrically connected to the control center 4. The preprocessor 3 includes a base 14, a horizontal pretreatment cylinder 15 fixedly installed on the base 14, and a pretreatment box 16 fixedly installed on the top of the pretreatment cylinder 15. A gas diffuser 17 is provided at the bottom of the pretreatment cylinder 15, and a gas collector 18 is provided at the top. The small-diameter end of the gas diffuser 17 is connected to the first hose 7 through a first quick connector 19, and the large-diameter end is connected to the bottom of the pretreatment cylinder 15. The large-diameter end of the gas collector 18 is connected to the top of the pretreatment cylinder 15, and the small-diameter end is connected to the left end of the bottom of the pretreatment box 16. The right end of the bottom of the pretreatment box 16 is connected to an exhaust pipe 20, and the exhaust pipe 20 is connected to the second hose 10 through a second quick connector 21. A mesh cylinder 22 is coaxially arranged in the pretreatment cylinder 15. The left and right ends of the mesh cylinder 22 are rotatably connected to the pretreatment cylinder 15 through rotating shafts 23, and the rotating shaft 23 at the left end extends out of the pretreatment cylinder 15. A partition plate 24 is vertically fixed in the middle of the inner bottom of the pretreatment box 16. There is a gap between the top end of the partition plate 24 and the inner top of the pretreatment box 16. A crankshaft 25 is rotatably provided at the lower part of the partition plate 24. The crankshaft 25 has two connecting rod journals 26 located on the left and right sides of the partition plate 24 respectively. Connecting rods 27 are sleeved on both connecting rod journals 26. The top ends of both connecting rods 27 are hinged with mesh boxes 28. The mesh boxes 28 are in contact with the inner wall of the pretreatment box 16 and the partition plate 24 and can slide up and down. Activated carbon 29 is filled in both the mesh cylinder 22 and the mesh boxes 28. The left end of the crankshaft 25 extends out of the pretreatment box 16, and driven gears 30 are fixedly sleeved on both the rotating shaft 23 extending out of the pretreatment cylinder 15. A motor 31 is fixedly installed between the pretreatment cylinder 15 and the pretreatment box 16. A driving gear 32 is fixedly sleeved on the output shaft of the motor 31. The driving gear 32 is located between the two driven gears 30 and meshed with the two driven gears 30;

[0015] During use, the intake pipe 6 is connected to the flue gas discharge pipeline, and the outlet pipe 11 is connected to the subsequent spray treatment device. Driven by the first fan 1 and the second fan 2, the flue gas can enter the pre-processor 3 through the intake pipe 6 and the first hose 7 for pre-treatment, and then the pre-treated flue gas is sent to the subsequent spray treatment device through the second hose 10 and the outlet pipe 11 for subsequent spray treatment. During this process, the first gas sensor 9 can be used to monitor the concentrations of sulfur oxides and nitrogen oxides in the untreated flue gas in real time, and the second gas sensor 13 can be used to monitor the concentrations of sulfur oxides and nitrogen oxides in the pre-treated flue gas in real time, and the monitored information is fed back to the control center 4. As time goes by, the adsorption effect of the pre-processor 3 gradually decreases, and the difference in the concentration information monitored by the two gas sensors will gradually decrease. When the difference is less than the set value, the control center 4 can automatically control the activation of the audible and visual alarm 5 for audible and visual warning to prompt the staff to replace the pre-processor 3 in time. When replacing the pre-processor 3, the intake valve 8 and the outlet valve 12 can be closed first, and then the connection between the first hose 7 and the air diffuser hood 17 can be disconnected through the first quick connector 19, and the connection between the second hose 10 and the exhaust pipe 20 can be disconnected through the second quick connector 21, so that the pre-processor 3 can be removed from the system, and then it can be moved away and another new pre-processor 3 can be brought in. The first hose 7 is connected to the air diffuser hood 17 through the first quick connector 19, and the second hose 10 is connected to the exhaust pipe 20 through the second quick connector 21, and then the intake valve 8 and the outlet valve 12 are opened to continue using. In this way, real-time monitoring of the pre-treatment can be achieved, enabling the staff to replace the pre-processor 3 in a timely and convenient manner, and more importantly, ensuring the effect and quality of the desulfurization and denitrification pre-treatment;

[0016] The working process of the preprocessor 3 is as follows: The motor 31 operates, driving the rotation of the rotating shaft 23 and the crankshaft 25 through gear transmission. The rotation of the rotating shaft 23 can drive the rotation of the mesh cylinder 22, and the rotation of the crankshaft 25 can drive the reciprocating up and down movement of the mesh boxes 28 on both sides of the partition plate. The flue gas is first dispersed into the pretreatment cylinder 15 through the gas-dispersing effect of the gas-dispersing cover 17 and flows through the mesh cylinder 22 from bottom to top, so that it can come into full contact with the activated carbon 29 in the continuously rotating mesh cylinder 22. Moreover, the mesh cylinder 22 can drive the flowing flue gas to swirl, extending the passing time of the flue gas, enabling the flue gas to better contact the activated carbon 29 in the mesh cylinder 22, and thus greatly enhancing the adsorption effect. Then, the flue gas is collected and discharged through the gas-collecting effect of the gas-collecting cover 18 and enters the pretreatment box 16 on the left side of the partition plate 24, continuing to flow from bottom to top. After flowing through the mesh box 28 on the left side of the partition plate 24, it enters the pretreatment box 16 on the right side of the partition plate 24 through the gap, changing the flow direction to flow from top to bottom. After flowing through the mesh box 28 on the right side of the partition plate 24, it is discharged through the exhaust pipe 20, making the flue gas flow in an inverted U shape in the pretreatment box 16, which can further extend the residence time of the flue gas. Moreover, the two groups of reciprocating up and down moving mesh boxes 28 not only make the distribution of the activated carbon 29 in them more uniform and can contact the flue gas multiple times, but also cooperate with each other to be more conducive to the full contact and adsorption of the activated carbon 29 in the mesh box 28 with the flue gas, which can further effectively enhance the adsorption effect, improve the overall adsorption pretreatment quality, and better meet the actual requirements. The first fan 1, the second fan 2, the control center 4, the sound and light alarm 5, the first gas sensor 9, the second gas sensor 13, the first quick connector 19, and the second quick connector 21 can all adopt existing technologies.

[0017] In this embodiment, both left and right ends of the outer bottom of the pretreatment cylinder 15 are fixedly connected to the base 14 through the support plates 33 to support the pretreatment cylinder 15.

[0018] In this embodiment, a hydraulic cylinder 34 is vertically fixed on the outer bottom of the pretreatment cylinder 15 inside the support plate 33. The piston rod of the hydraulic cylinder 34 faces downward and is fixedly connected to a lifting plate 35. The lifting plate 35 is slidably sleeved on the support plate 33. On the front and rear sides of the bottom of the end of the lifting plate 35 away from the corresponding hydraulic cylinder 34, casters 36 are installed. When the piston rod of the hydraulic cylinder 34 is in a contracted state, the bottom end of the caster 36 is higher than the bottom of the base 14. When replacing the pre-processor 3, the hydraulic cylinder 34 can be operated to extend its piston rod, which can drive the lifting plate 35 to move downward until the casters 36 are placed on the ground and the base 14 is lifted. Thus, the entire pre-processor 3 can be flexibly moved and walked by the cooperation of the four groups of casters 36, which is more conducive to the quick removal of the used pre-processor 3 and the movement of the new pre-processor 3 into place. After the new pre-processor 3 is moved into place, only need to operate the hydraulic cylinder 34 again to contract its piston rod, driving the lifting plate 35 to move upward until the casters 36 are suspended and the base 14 is placed on the ground, then the pre-processor 3 can be fixed. In this way, it is more convenient to replace the pre-processor 3, making the whole device more convenient and practical.

[0019] In this embodiment, the base 14 is made of aluminum foam. Aluminum foam is an existing material with excellent characteristics such as damping energy absorption, shock absorption, anti-corrosion and corrosion resistance. It has a long service life and can play a good role in buffering, shock absorption and protection, which is more conducive to improving the stability during the pretreatment operation.

[0020] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A desulfurization and denitrification monitoring pretreatment device, characterized in that It includes a first fan, a second fan, a preprocessor, a control center and an audible and visual alarm. The air inlet of the first fan is connected to an air inlet pipe, and the air outlet is connected to a first hose. An air inlet valve and a first gas sensor are provided on the air inlet pipe. The air inlet of the second fan is connected to a second hose, and the air outlet is connected to an air outlet pipe. An air outlet valve and a second gas sensor are provided on the air outlet pipe. The first gas sensor, the second gas sensor and the audible and visual alarm are all electrically connected to the control center. The preprocessor includes a base, a horizontal preprocessing cylinder fixedly installed on the base, and a preprocessing box fixedly installed on the top of the preprocessing cylinder. A gas diffuser is provided at the bottom of the preprocessing cylinder, and a gas collector is provided at the top. The small-diameter end of the gas diffuser is connected to the first hose through a first quick connector, and the large-diameter end is connected to the bottom of the preprocessing cylinder. The large-diameter end of the gas collector is connected to the top of the preprocessing cylinder, and the small-diameter end is connected to the left end of the bottom of the preprocessing box. A exhaust pipe is connected to the right end of the bottom of the preprocessing box, and the exhaust pipe is connected to the second hose through a second quick connector. A mesh cylinder is coaxially provided inside the preprocessing cylinder. The left and right ends of the mesh cylinder are rotatably connected to the preprocessing cylinder through rotating shafts, and the rotating shaft at the left end extends out of the preprocessing cylinder. A partition is vertically fixed on the middle section of the inner bottom of the preprocessing box. There is a gap between the top end of the partition and the inner top of the preprocessing box. A crankshaft is rotatably provided below the partition. The crankshaft has two connecting rod journals located on the left and right sides of the partition respectively. Connecting rods are sleeved on both connecting rod journals. The top ends of both connecting rods are hinged with mesh boxes. The mesh boxes are in contact with the inner wall of the preprocessing box and the partition and can slide up and down. Activated carbon is filled in both the mesh cylinder and the mesh boxes. The left end of the crankshaft extends out of the preprocessing box, and driven gears are fixedly sleeved on the rotating shaft extending out of the preprocessing cylinder and the crankshaft respectively. A motor is fixedly installed between the preprocessing cylinder and the preprocessing box. A driving gear is fixedly sleeved on the output shaft of the motor. The driving gear is located between the two driven gears and meshes with the two driven gears.

2. The desulfurization and denitrification monitoring and pretreatment device according to claim 1, wherein Both the left and right ends of the outer bottom of the preprocessing cylinder are fixedly connected to the base through support plates.

3. The desulfurization and denitrification monitoring pretreatment device according to claim 2, characterized in that, Hydraulic cylinders are vertically fixed on the outer bottom of the preprocessing cylinder inside the support plates. The piston rods of the hydraulic cylinders face downwards and are fixedly connected to a lifting plate. The lifting plate is slidably sleeved on the support plates. Casters are installed on the front and rear sides of the bottom of the end of the lifting plate away from the corresponding hydraulic cylinder. When the piston rods of the hydraulic cylinders are in a retracted state, the bottom ends of the casters are higher than the bottom of the base.

4. The desulfurization and denitrification monitoring and pretreatment device according to claim 1, wherein The base is made of aluminum foam.

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