A flue gas desulfurization wastewater treatment device

Abstract

The present invention belongs to the technical field of flue gas desulfurization wastewater treatment, and specifically relates to a flue gas desulfurization wastewater treatment device, including a distillation box, wherein the distillation box is provided with two crushing rollers, the distillation box is provided with a guide plate, the left and right ends of the two crushing rollers penetrate the distillation box and are provided with driven gears, the outer sides of the left and right driven gears of the crushing rollers located on the rear side are fixedly connected with intermediate gears, a horizontal shaft rotatably connected to the distillation box is provided on the lower side of the intermediate gear, driving gears are provided on the left and right ends of the horizontal shaft, the transmission ratio of the driving gear to the intermediate gear is 7:1, a plurality of wind cups are fixedly connected to the side surfaces of the left and right ends of the horizontal shaft, the left and right ends of the distillation box are connected with metal air pipes, the metal air pipes are provided with high-pressure conduction valves, and the end of the metal air pipes is provided with blowing nozzles matching the wind cups; the treatment device can distill and dehydrate solid precipitates in the flue gas desulfurization wastewater, and can also crush solid precipitates with larger volumes in the wastewater.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas desulfurization wastewater treatment, and specifically relates to a flue gas desulfurization wastewater treatment device. Background Art

[0002] Diesel generator sets are a type of power generation equipment that uses diesel as the main fuel. They use diesel engines as the motive force to drive generators to generate electricity, and are mechanical equipment that converts kinetic energy into electrical energy and thermal energy. When a diesel generator set is working, it emits a large amount of high-temperature flue gas, which will also be accompanied by carbon particles, dust, and SO2 gas. In view of the harm these substances cause to the environment and human health, the flue gas must be purified before it is discharged into the atmosphere to meet the emission standards.

[0003] At present, a high-pressure fine water mist cooling and smoke elimination device is used for flue gas spray treatment. The sprayed water cools the flue gas and absorbs the carbon dust and SO2 gas in the flue gas. The spray wastewater generated after the spray treatment needs to be desulfurized. The common desulfurization method is wet desulfurization. The wet desulfurization technology is relatively mature, efficient and simple to operate. Since the desulfurizer used in wet desulfurization is usually limestone, calcium sulfite and calcium sulfate will be generated after limestone absorbs sulfur dioxide. Due to its low solubility, the desulfurization wastewater will contain more and larger solid precipitates. These solid precipitates can be used as raw materials for the production of bleaching agents or cement. At present, when extracting these solid precipitates from the desulfurization wastewater, it is necessary to dehydrate them and then crush them through a crushing device. However, this treatment method is relatively complicated and requires two devices to complete the operation. The extraction cost is high, and the operator is required to transport the dehydrated solid precipitates, which is time-consuming and labor-intensive. In response to the above problems, we have proposed a flue gas desulfurization wastewater treatment device. Summary of the invention

[0004] The purpose of the present invention is to provide a flue gas desulfurization wastewater treatment device to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A flue gas desulfurization wastewater treatment device comprises a distillation box, wherein a ceramic discharge hopper is provided at the lower end of the distillation box, an electric heating wire is provided inside the ceramic discharge hopper, a discharge mechanism and a support mechanism are provided at the lower end of the ceramic discharge hopper, a feeding mechanism is provided at the upper end of the distillation box, two crushing rollers arranged side by side in front and back are rotatably connected to the upper side of the distillation box, a guide plate fixedly connected to the inner wall of the distillation box is provided on the upper side of the two crushing rollers, the left and right ends of the two crushing rollers penetrate the distillation box and are provided with driven gears, and the two driven gears on the left and right sides are meshed with each other, the outer sides of the left and right driven gears of the crushing roller located at the rear side are fixedly connected with an intermediate gear, a horizontal shaft rotatably connected to the distillation box is provided at the lower side of the intermediate gear, the left and right ends of the horizontal shaft penetrate the distillation box and are provided with driving gears meshed with the intermediate gear, the transmission ratio of the driving gear to the intermediate gear is 7:1, a plurality of wind cups are fixedly connected to the sides of the left and right ends of the horizontal shaft, the left and right ends of the distillation box are connected with metal air pipes, the metal air pipes are provided with high-pressure conduction valves, and the end of the metal air pipes is provided with blowing nozzles matching the wind cups.

[0007] By adopting the technical solution of the present invention, the supporting mechanism can stably support the entire device, and wastewater can be added to the distillation box through the feeding mechanism. When the wastewater enters the distillation box, the two guide plates can guide the wastewater so that the wastewater gathers in the gap between the two crushing rollers. Solid precipitates with larger volumes will be intercepted on the upper side of the gap between the two crushing rollers, and the remaining wastewater will enter the distillation box through the gap and then accumulate on the upper side of the ceramic discharge hopper. When the electric heating wire is energized, the wastewater can be heated, and continuous heating can evaporate the wastewater, thereby achieving dehydration of solid precipitates. The evaporation of wastewater will produce a large amount of steam, and the pressure in the distillation box will also increase with the increase in the amount of steam. When the pressure in the distillation box is greater than the conduction pressure of the high-pressure conduction valve, the high-pressure conduction valve is turned on, and the steam in the distillation box enters the metal air pipe and is blown out from the blowing nozzle. The blown steam drives the horizontal axis to rotate through the wind cup. The direction of rotation of the horizontal axis is counterclockwise when viewed from left to right, and the horizontal axis rotates counterclockwise when viewed from left to right. The clockwise rotation drives the intermediate gear to rotate clockwise through the driving gear. Since the transmission ratio of the driving gear and the intermediate gear is:, the driving gear drives the intermediate gear to rotate in a process of speed reduction and distance increase, so the intermediate gear can obtain a larger torque. The clockwise rotation of the intermediate gear will simultaneously drive the left and right driven gears of the crushing roller on the rear side to rotate clockwise. When the left and right driven gears of the crushing roller on the rear side rotate clockwise, they will drive the crushing roller on the rear side to rotate clockwise, and at the same time drive the left and right driven gears of the crushing roller on the front side to rotate counterclockwise. When the left and right driven gears of the crushing roller on the front side rotate counterclockwise, they will drive the crushing roller on the front side to rotate counterclockwise. In this way, the two crushing rollers can crush larger solid precipitates, and the crushed solid precipitates fall into the wastewater in the distillation box through the gap. After the wastewater in the distillation box is completely evaporated, the discharging mechanism can be opened to discharge the dehydrated and crushed solid precipitates;

[0008] When the horizontal axis rotates, it can also drive the vertical axis to rotate through the helical gear. When the vertical axis rotates, it can drive several stirring rods to rotate. When the stirring rods rotate, the wastewater in the distillation box can be stirred, so that the wastewater in the distillation box can be heated evenly, thereby improving the evaporation efficiency.

[0009] The present invention provides a flue gas desulfurization wastewater treatment device, which can distill and dehydrate solid precipitates in the flue gas desulfurization wastewater, and can also crush solid precipitates with larger volumes in the wastewater. This treatment method is relatively simple, and one device can complete the operation, with low extraction costs, and does not require operators to transport the dehydrated solid precipitates, thus saving time and effort.

[0010] It is further defined that the discharge mechanism includes a discharge pipe, and the discharge pipe is provided with a discharge valve. With such a structure, when the discharge valve is opened, the discharge pipe is connected, and waste water can be discharged through the discharge pipe, and when the discharge valve is closed, the discharge pipe is closed.

[0011] It is further defined that the support mechanism includes four support legs, the lower ends of the four support legs are provided with foot pads, and a lateral stabilizer bar is provided between any two adjacent support legs of the four support legs. Such a structure can stably support the entire device.

[0012] It is further defined that the feed mechanism includes a feed pipe, and the feed pipe is provided with a feed valve. With such a structure, when the feed valve is opened, the feed pipe is connected, and waste water can enter the distillation box through the feed pipe, and when the feed valve is closed, the feed pipe is closed.

[0013] It is further defined that both left and right ends of the distillation box are provided with gas collecting hoods, which cover the driven gear, the intermediate gear, the wind cup, the metal air pipe, the high-pressure conduction valve and the blowing nozzle, and an outlet branch pipe is connected between the two gas collecting hoods, and the outlet branch pipe is connected to the outlet main pipe. With such a structure, the two gas collecting hoods can guide the steam into the outlet branch pipes and gather them into the outlet main pipe, and the steam is uniformly discharged from the outlet main pipe for centralized treatment.

[0014] It is further defined that the lower end of the gas collecting hood is provided with a drain pipe, and the drain pipe is provided with a drain valve. With such a structure, when the drain valve is opened, the drain pipe is connected, and condensed water in the gas collecting hood can be discharged from the drain pipe, and when the drain valve is closed, the drain pipe is sealed.

[0015] It is further defined that a first transparent glass window is provided on the side of the gas collecting hood. Such a structure facilitates observation of the working conditions in the gas collecting hood.

[0016] It is further defined that a second transparent glass window is provided on the side of the distillation box. Such a structure makes it convenient to observe the working conditions in the distillation box.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The treatment device can distill and dehydrate the solid precipitates in the flue gas desulfurization wastewater, and can also crush the larger solid precipitates in the wastewater. This treatment method is relatively simple, and one device can complete the operation. The extraction cost is low, and the operator does not need to transport the dehydrated solid precipitates, saving time and effort.

[0019] 2. The treatment device can also stir the wastewater during distillation and dehydration, so that the wastewater in the distillation box is evenly heated, thereby improving the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a flue gas desulfurization wastewater treatment device of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of an embodiment of a flue gas desulfurization wastewater treatment device of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of a local structure of an embodiment of a flue gas desulfurization wastewater treatment device of the present invention;

[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0025] The main component symbols are described as follows:

[0026] Distillation box 1, ceramic discharge hopper 2, crushing roller 21, guide plate 22, driven gear 23, intermediate gear 24, horizontal shaft 25, driving gear 26, wind cup 27, metal air pipe 28, high-pressure conduction valve 29, blowing nozzle 3, worm rod 4, cross 41, vertical shaft 42, helical gear 43, stirring rod 44, discharge pipe 5, discharge valve 51, supporting foot 52, foot pad 53, lateral stabilizer bar 54, feed pipe 55, feed valve 56, air collecting hood 57, air outlet branch pipe 58, air outlet main pipe 59, drain pipe 6, drain valve 61, first transparent glass window 62, second transparent glass window 63. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1-4As shown, a flue gas desulfurization wastewater treatment device of the present invention comprises a distillation box 1, a ceramic discharge hopper 2 is provided at the lower end of the distillation box 1, an electric heating wire is provided inside the ceramic discharge hopper 2, a discharge mechanism and a support mechanism are provided at the lower end of the ceramic discharge hopper 2, a feeding mechanism is provided at the upper end of the distillation box 1, two crushing rollers 21 arranged side by side in front and back are rotatably connected to the upper side of the distillation box 1, a guide plate 22 fixedly connected to the inner wall of the distillation box 1 is provided on the upper side of the two crushing rollers 21, a driven gear 23 is provided at both left and right ends of the two crushing rollers 21 penetrating the distillation box 1, and the two driven gears 23 on the left and right sides are meshed with each other, and the outer sides of the left and right driven gears 23 of the crushing roller 21 located on the rear side are fixedly connected to the middle gear 24, and the lower side of the middle gear 24 is provided with a guide plate 22 which is rotated with the distillation box 1 A horizontal axis 25 is dynamically connected, and both left and right ends of the horizontal axis 25 pass through the distillation box 1 and are provided with a driving gear 26 meshing with the intermediate gear 24. The transmission ratio of the driving gear 26 to the intermediate gear 24 is 7:1. A number of wind cups 27 are fixedly connected to the left and right sides of the horizontal axis 25. Both left and right ends of the distillation box 1 are connected to metal air pipes 28, and the metal air pipes 28 are provided with high-pressure conduction valves 29. The end of the metal air pipes 28 is provided with a blowing nozzle 3 matching the wind cups 27. A vortex rod 4 is provided in the middle of the horizontal axis 25, and a stirring mechanism is provided on one side of the vortex rod 4. The stirring mechanism includes a cross 41 fixed to the inner side of the distillation box 1, and a vertical axis 42 is rotatably connected to the middle of the cross 41. A helical gear 43 meshing with the vortex rod 4 is provided on the upper side of the vertical axis 42, and a number of stirring rods 44 are provided on the lower side of the vertical axis 42.

[0029] By adopting the technical solution of the present invention, the supporting mechanism can stably support the entire device, and wastewater can be added to the distillation box 1 through the feeding mechanism. When the wastewater enters the distillation box 1, the two guide plates 22 can guide the wastewater so that the wastewater gathers in the gap between the two crushing rollers 21. Solid precipitates with larger volumes will be intercepted on the upper side of the gap between the two crushing rollers 21, and the remaining wastewater enters the distillation box 1 through the gap, and then accumulates on the upper side of the ceramic discharge hopper 2. When the electric heating wire is energized, the wastewater can be heated, and continuous heating can evaporate the wastewater, thereby achieving dehydration of solid precipitates. The evaporation of wastewater will generate a large amount of steam, and the pressure in the distillation box 1 will also increase with the increase in the amount of steam. When the pressure in the distillation box 1 is greater than the conduction pressure of the high-pressure conduction valve 29, the high-pressure conduction valve 29 is turned on, and the steam in the distillation box 1 enters the metal air pipe 28 and is blown out from the blowing nozzle 3. The blown steam drives the horizontal axis 25 to rotate through the wind cup 27. The direction of rotation of the horizontal axis 25 is counterclockwise when observed from left to right. The counterclockwise rotation of the horizontal axis 25 passes through The driving gear 26 drives the intermediate gear 24 to rotate clockwise. Since the transmission ratio of the driving gear 26 to the intermediate gear 24 is 7:1, the driving gear 26 drives the intermediate gear 24 to rotate in a process of deceleration and distance increase. Therefore, the intermediate gear 24 can obtain a larger torque. The clockwise rotation of the intermediate gear 24 will simultaneously drive the left and right driven gears 23 of the crushing roller 21 at the rear side to rotate clockwise. When the left and right driven gears 23 of the crushing roller 21 at the rear side rotate clockwise, the crushing roller 21 at the rear side will rotate clockwise, and at the same time, the left and right driven gears 23 of the crushing roller 21 at the front side will rotate counterclockwise. When the left and right driven gears 23 of the crushing roller 21 at the front side rotate counterclockwise, the crushing roller 21 at the front side will rotate counterclockwise. In this way, the two crushing rollers 21 can crush the solid precipitate with a larger volume. The crushed solid precipitate falls into the wastewater in the distillation box 1 through the gap. After the wastewater in the distillation box 1 is completely evaporated, the dehydrated and crushed solid precipitate can be discharged by opening the discharging mechanism.

[0030] When the horizontal shaft 25 rotates, it can also drive the vertical shaft 42 to rotate through the helical gear 43. When the vertical shaft 42 rotates, it can drive a plurality of stirring rods 44 to rotate. When the stirring rods 44 rotate, the waste water in the distillation box 1 can be stirred, so that the waste water in the distillation box 1 can be heated evenly, thereby improving the evaporation efficiency.

[0031] The present invention provides a flue gas desulfurization wastewater treatment device, which can distill and dehydrate solid precipitates in the flue gas desulfurization wastewater, and can also crush solid precipitates with larger volumes in the wastewater. This treatment method is relatively simple, and one device can complete the operation, with low extraction costs, and does not require operators to transport the dehydrated solid precipitates, thus saving time and effort.

[0032] Preferably, the discharge mechanism comprises a discharge pipe 5, and the discharge pipe 5 is provided with a discharge valve 51. With such a structure, when the discharge valve 51 is opened, the discharge pipe 5 is connected, and waste water can be discharged through the discharge pipe 5, and when the discharge valve 51 is closed, the discharge pipe 5 is closed.

[0033] Preferably, the support mechanism includes four support legs 52, each of which has a foot pad 53 at its lower end, and a lateral stabilizer bar 54 between any two adjacent support legs 52. Such a structure can stably support the entire device. In fact, other structures that can stably support the entire device can also be considered according to the situation.

[0034] Preferably, the feed mechanism comprises a feed pipe 55, and the feed pipe 55 is provided with a feed valve 56. With such a structure, when the feed valve 56 is opened, the feed pipe 55 is connected, and waste water can enter the distillation box 1 through the feed pipe 55, and when the feed valve 56 is closed, the feed pipe 55 is closed.

[0035] Preferably, both left and right ends of the distillation box 1 are provided with gas collecting hoods 57, which cover the driven gear 23, the intermediate gear 24, the wind cup 27, the metal air pipe 28, the high-pressure conduction valve 29 and the blowing nozzle 3. An outlet branch pipe 58 is connected between the two gas collecting hoods 57, and the outlet branch pipe 58 is connected to the outlet main pipe 59. With such a structure, the two gas collecting hoods 57 can guide the steam into the outlet branch pipes 58 and converge them into the outlet main pipe 59, and the steam is uniformly discharged from the outlet main pipe 59 for centralized treatment. In fact, other structures that are convenient for centralized treatment of steam can also be considered according to the situation.

[0036] Preferably, a drain pipe 6 is provided at the lower end of the gas collecting hood 57, and the drain pipe 6 is provided with a drain valve 61. With such a structure, the drain valve 61 is opened, the drain pipe 6 is connected, and the condensed water in the gas collecting hood 57 can be discharged from the drain pipe 6, and the drain valve 61 is closed, and the drain pipe 6 is closed.

[0037] Preferably, a first transparent glass window 62 is provided on the side of the gas collecting hood 57. Such a structure facilitates observation of the working conditions in the gas collecting hood 57. In fact, other structures that facilitate observation of the working conditions in the gas collecting hood 57 may also be considered according to the circumstances.

[0038] Preferably, a second transparent glass window 63 is provided on the side of the distillation box 1. Such a structure facilitates observation of the working conditions in the distillation box 1. In fact, other structures that facilitate observation of the working conditions in the distillation box 1 may also be considered according to the situation.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A flue gas desulfurization wastewater treatment device, comprising a distillation tank (1), characterized in that: The lower end of the distillation box (1) is provided with a ceramic discharge hopper (2), the interior of the ceramic discharge hopper (2) is provided with an electric heating wire, the lower end of the ceramic discharge hopper (2) is provided with a discharge mechanism and a support mechanism, the upper end of the distillation box (1) is provided with a feeding mechanism, the upper side of the interior of the distillation box (1) is rotatably connected to two pulverizing rollers (21) arranged side by side in front and back, the upper sides of the two pulverizing rollers (21) are provided with guide plates (22) fixedly connected to the inner wall of the distillation box (1), the left and right ends of the two pulverizing rollers (21) penetrate the distillation box (1) and are provided with driven gears (23), and the two driven gears (23) on the left and right sides are meshed with each other, and the left and right driven gears (23) of the pulverizing roller (21) located on the rear side are meshed with each other. 23) are fixedly connected to the outside of the intermediate gear (24), the lower side of the intermediate gear (24) is provided with a horizontal shaft (25) rotatably connected to the distillation box (1), the left and right ends of the horizontal shaft (25) penetrate the distillation box (1) and are provided with driving gears (26) meshing with the intermediate gear (24), the transmission ratio of the driving gear (26) to the intermediate gear (24) is 7:1, the left and right sides of the horizontal shaft (25) are fixedly connected to a plurality of wind cups (27), the left and right ends of the distillation box (1) are connected to metal air pipes (28), the metal air pipes (28) are provided with high-pressure conduction valves (29), and the end of the metal air pipes (28) is provided with a blowing nozzle (3) matching the wind cups (27); Both left and right ends of the distillation box (1) are provided with gas collecting covers (57), the gas collecting covers (57) cover the driven gear (23), the intermediate gear (24), the wind cup (27), the metal air pipe (28), the high-pressure conduction valve (29) and the blowing nozzle (3), and an air outlet branch pipe (58) is connected between the two gas collecting covers (57), and the air outlet branch pipe (58) is connected to the air outlet main pipe (59); A vortex (4) is provided in the middle of the horizontal axis (25), and a stirring mechanism is provided on one side of the vortex (4). The stirring mechanism comprises a cross (41) fixed to the inner side of the distillation box (1), and a vertical axis (42) is rotatably connected to the middle of the cross (41). A helical gear (43) meshing with the vortex (4) is provided on the upper side of the vertical axis (42), and a plurality of stirring rods (44) are provided on the lower side of the vertical axis (42).

2. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: The discharge mechanism comprises a discharge pipe (5), and the discharge pipe (5) is provided with a discharge valve (51).

3. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: The support mechanism comprises four support legs (52), each of the four support legs (52) having a foot pad (53) at its lower end, and a lateral stabilizing bar (54) between any two adjacent support legs (52) among the four support legs (52).

4. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: The feeding mechanism comprises a feeding pipe (55), and the feeding pipe (55) is provided with a feeding valve (56).

5. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: A liquid discharge pipe (6) is provided at the lower end of the gas collecting hood (57), and a liquid discharge valve (61) is provided on the liquid discharge pipe (6).

6. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: A first transparent glass window (62) is provided on the side of the gas collecting hood (57).

7. A flue gas desulfurization wastewater treatment device according to claim 1, characterized in that: A second transparent glass window (63) is provided on the side of the distillation box (1).

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