Desulfurization wastewater discharge control system

Abstract

The invention provides a desulfurization wastewater discharge control system, and relates to the technical field of desulfurization wastewater treatment.The desulfurization wastewater discharge control system comprises a treatment shell, the lower end of the treatment shell is connected with a liquid storage shell, a waste heat evaporation mechanism is arranged in the liquid storage shell, the liquid storage shell and the treatment shell are communicated through a liquid feeding pipe and a communication port, and a treatment mechanism is arranged in the treatment shell; the waste heat evaporation mechanism is communicated with the waste heat evaporation mechanism, the waste heat evaporation mechanism is communicated with the waste heat evaporation mechanism, the waste heat evaporation mechanism is communicated with the waste heat evaporation mechanism, the waste heat evaporation mechanism is connected with the waste heat evaporation mechanism, the waste heat evaporation mechanism is connected with the waste heat evaporation mechanism, and the process of membrane concentration and evaporative crystallization does not need to be adopted; and heat in the flue gas is effectively utilized, the heat utilization rate is increased, and resource waste is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization wastewater treatment, in particular to a desulfurization wastewater discharge control system. Background Art

[0002] With the development of society, environmental issues are becoming more and more important. In order to protect the environment, industrial furnaces, power plants, etc. strictly control the concentration of emissions, which is one of the main measures. With the increasing environmental protection requirements, zero discharge of desulfurization wastewater has gradually become a technical trend in water treatment in power plants. Membrane concentration + evaporation crystallization is a commonly used technical route for zero discharge of desulfurization wastewater. However, the membrane system has high requirements for water quality and usually requires pretreatment steps such as softening. The process is long, the membrane is seriously contaminated during long-term operation, the equipment maintenance is frequent, and the operating cost is high. Summary of the invention

[0003] The present invention provides a desulfurization wastewater discharge control system, which is used to solve the above-mentioned membrane concentration + evaporation crystallization is a technical route commonly used for zero discharge of desulfurization wastewater, but the membrane system has high requirements on water quality, usually requires pretreatment steps such as softening, has a long process flow, and has serious membrane pollution during long-term operation, frequent equipment maintenance, and high operating costs. Technical problems.

[0004] In order to solve the above technical problems, the present invention discloses a desulfurization wastewater discharge control system, including a treatment shell, the lower end of the treatment shell is connected to a liquid storage shell, a waste heat evaporation mechanism is arranged inside the liquid storage shell, the liquid storage shell and the treatment shell are connected through a liquid delivery pipe and a connecting port, a treatment mechanism is arranged inside the treatment shell, the treatment mechanism is connected to the liquid delivery pipe, one end of the treatment shell away from the liquid delivery pipe is connected to a flue gas pipe, a cleaning mechanism is connected to the flue gas pipe, and the upper end of the treatment shell is connected to a discharge pipe.

[0005] Preferably, the processing mechanism includes a processing chamber arranged inside the processing shell, a liquid spray pipe is provided on the upper side of the processing chamber, a plurality of liquid spray heads are connected to the lower end of the liquid spray pipe, and the left end of the liquid spray pipe is connected to the liquid inlet, which is arranged on the upper left end of the processing shell.

[0006] Preferably, a plurality of air guide plates are provided at the left and right ends of the lower middle part of the processing chamber, and the plurality of air guide plates are arranged at intervals and staggered. An air inlet is provided on the lower right side of the processing shell, the air inlet is connected with the processing chamber, and the air inlet is connected with the smoke pipe. An air detector is installed on the left side of the upper end of the processing chamber, and an air pressure detector is installed on the right side of the upper end of the processing chamber. An exhaust port is provided in the middle part of the upper end of the processing chamber, and baffle plate two is rotatably provided in the exhaust port, baffle plate two is fixedly connected to connecting shaft one, connecting shaft one passes through the front end of the exhaust port and is fixedly connected to an external driving motor, and the driving motor is fixedly arranged at the front end of the processing shell.

[0007] Preferably, the waste heat evaporation mechanism includes a liquid storage chamber arranged inside the liquid storage shell, a connecting port is provided at the upper end of the liquid storage shell, the liquid storage chamber is connected with the processing chamber through the connecting port, a liquid outlet is provided at the left end of the liquid storage shell, the liquid outlet is connected with the liquid storage chamber, and the liquid outlet is connected with the inlet of the liquid delivery pipe, the outlet of the liquid delivery pipe is connected with the liquid inlet, and a temperature detector is installed at the right end of the liquid storage chamber, and the temperature detector, the air pressure detector and the air detector are electrically connected to the drive motor through controller 1.

[0008] Preferably, a sliding chamber 1 is provided at the upper end of the liquid storage chamber, and the sliding chamber 1 is slidably connected to a sliding block 1. A rotating shaft 1 is rotatably provided in the sliding block 1, and the rotating shaft 1 is rotatably connected to a rotating plate 1. A sliding groove 1 is provided on the lower side of the rotating plate 1, and a rotating plate 2 is slidably provided in the sliding groove 1. A spring telescopic rod is fixedly provided between the sliding groove 1 and the rotating plate 2. A contact switch 1 is provided at the left end of the sliding chamber 1, and a contact block 1 is provided at the left end of the sliding block 1. The contact switch 1 and the contact block 1 are correspondingly provided, and the contact switch 1 is electrically connected to the spring telescopic rod through a controller 2.

[0009] Preferably, the lower end of the liquid storage chamber is connected to a sliding chamber 2, which is slidably connected to a sliding block 2. A rotating shaft 2 is rotatably provided in the sliding block 2, which is rotatably connected to a rotating plate 2. A contact switch 2 is provided at the left end of the sliding chamber 2, and a contact block 2 is provided at the left end of the sliding block 2. The contact switch 2 and the contact block 2 are correspondingly arranged, and the contact switch 2 is electrically connected to the power pump through a controller 3.

[0010] Preferably, a liquid filling port is provided on the upper left end of the liquid storage shell, and a discharge port is provided on the lower right end of the liquid storage shell. The power pump is connected to the liquid storage cavity through the liquid filling port. The power pump is fixedly arranged at the left end of the liquid storage shell, and the discharge port is connected to the sliding cavity 2 and the liquid storage cavity.

[0011] Preferably, the cleaning mechanism includes a cleaning shell, which is fixedly arranged on the outside of the smoke pipe, and an annular cavity is arranged inside the cleaning shell. A plurality of cleaning ports are evenly distributed circumferentially on the outer side of the smoke pipe, and the cleaning port is connected with the cleaning head. The end of the cleaning port away from the cleaning head is connected with the annular cavity, and the upper end of the annular cavity is connected with an inlet, which is arranged at the upper end of the cleaning shell, and the inlet is connected with the blocking cavity, and the blocking cavity is connected with the cavity. A matching block is slidingly provided in the cavity for sliding connection, and a plurality of springs are fixedly provided between the matching block and the side end of the cavity, and the end of the matching block away from the spring is fixedly connected with the blocking block, and the blocking block is slidingly connected with the blocking cavity, and the blocking block is correspondingly arranged with the inlet.

[0012] Preferably, the liquid spray pipe passes through the right end of the processing chamber and is connected to the outside world, and an outlet is provided at the lower end of the external liquid spray pipe, the outlet is connected to the upper end of the connecting pipe, the lower end of the connecting pipe is connected to the inlet, and the connecting pipe is fixedly arranged between the lower end of the liquid spray pipe and the upper end of the cleaning shell.

[0013] Preferably, an installation cavity is provided at one end of the flue gas pipe near the treatment shell, a mounting block is slidably provided in the installation cavity, a filter screen is fixedly installed in the installation block, the filter screen is arranged corresponding to the inside of the air inlet, the upper end of the installation block is fixedly connected to the connecting block 1, the connecting block 1 is slidably connected to the connecting pipe, the lower end of the connecting block 1 is fixedly connected to the matching rod, the matching rod passes through the upper end of the cleaning shell into the cavity and is slidably connected to the inclined end of the matching block, the matching rod is slidably connected to the sealing block 1, the sealing block 1 is slidably connected to the installation block, the sealing block 1 is fixedly arranged at the upper end of the cleaning shell, the lower end of the installation block is fixedly connected to the connecting block 2 and the sealing block 2, the connecting block 2 passes through the liquid drop port and contacts with the baffle 1, the baffle 1 is rotatably arranged at the upper end of the liquid storage chamber through the connecting shaft, a reset torsion spring is fixedly provided between the connecting shaft and the front end of the liquid storage chamber, the liquid drop port is arranged on the right side of the upper end of the liquid storage shell, and the liquid drop port is communicated with the liquid storage chamber.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area A in FIG.

[0016] In the figure: 1, processing shell; 2, flue gas pipe; 3, liquid delivery pipe; 4, sliding chamber 1; 5, liquid storage shell; 6, discharge pipe; 7, liquid storage chamber; 8, discharge port; 9, sliding chamber 2; 10, rotating shaft 2; 11, rotating plate 2; 12, rotating plate 1; 13, contact switch 2; 14, rotating shaft 1; 15, processing chamber; 16, air guide plate; 17, liquid spray pipe; 18, liquid spray head; 19, connecting port; 20, baffle 1; 21, liquid drop port; 22, connecting block 2; 23, air inlet; 24, cleaning shell; 25, annular cavity; 26, cleaning port; 27, cleaning head; 28, mounting block; 29, filter screen; 30, sealing block 2; 31, cavity; 32, spring; 33, matching block; 34, matching rod; 35, blocking block; 36, blocking cavity; 37, inlet; 38, sealing block 1; 39, connecting block 1; 40, liquid inlet; 41, connecting pipe; 42, outlet; 43, air detector; 44, air pressure detector; 45, baffle 2; 46, exhaust port; 47, power pump; 48, contact switch 1; 49, temperature detector. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] The present invention provides the following embodiments Example 1 The embodiment of the present invention provides a desulfurization wastewater discharge control system, such as Figure 1-Figure 3 As shown, it includes a processing shell 1, the lower end of the processing shell 1 is connected to a liquid storage shell 5, a waste heat evaporation mechanism is arranged inside the liquid storage shell 5, the liquid storage shell 5 and the processing shell 1 are connected through a liquid supply pipe 3 and a connecting port 19, a processing mechanism is arranged inside the processing shell 1, and the processing mechanism is connected to the liquid supply pipe 3, the end of the processing shell 1 away from the liquid supply pipe 3 is connected to a smoke pipe 2, a cleaning mechanism is connected to the smoke pipe 2, and the upper end of the processing shell 1 is connected to an exhaust pipe 6.

[0020] The beneficial effects of the above technical solution are: The flue gas pipe 2 is used to transport the flue gas to be desulfurized into the interior of the processing shell 1. The liquid storage shell 5 stores an adsorbent containing ammonia. The processing mechanism atomizes the adsorbent containing ammonia and sprays it into the interior of the processing shell 1 to react with SOx in the flue gas to achieve the purpose of desulfurization. The adsorbent after desulfurization becomes waste liquid. The waste heat evaporation mechanism is set. Since the flue gas entering the processing shell 1 carries heat, the flue gas with heat evaporates the atomized waste liquid. Since the adsorbent is in an atomized state, the evaporation effect of the waste liquid is good. The liquid storage shell 5 and the processing shell 1 are connected through the connecting port 19. After the waste liquid falls back into the liquid storage shell 5 through the connecting port 19, the flue gas with heat can also The waste liquid enters the liquid storage shell 5 to evaporate, the water in the waste liquid is evaporated, and the inorganic salt contained in the waste liquid is evaporated into crystals, so as to achieve the purpose of zero discharge of desulfurized waste water. The heat of the flue gas is used to evaporate the atomized desulfurized waste liquid, and there is no need to adopt the membrane concentration + evaporation crystallization process. The heat in the flue gas is effectively used, the heat utilization rate is improved, and the waste of resources is avoided. The membrane concentration + evaporation crystallization is a commonly used technical route for zero discharge of desulfurized waste water, but the membrane system has high requirements on water quality, usually requires pretreatment links such as softening, has a long process flow, and the membrane is seriously contaminated during long-term operation. The equipment maintenance is frequent and the operating cost is high.

[0021] Example 2 On the basis of Example 1, Figure 1-Figure 3 As shown, the processing mechanism includes a processing chamber 15 disposed inside the processing shell 1, a liquid spraying pipe 17 is disposed on the upper side of the processing chamber 15, a plurality of liquid spraying heads 18 are connected to the lower end of the liquid spraying pipe 17, and the left end of the liquid spraying pipe 17 is connected to a liquid inlet 40, which is disposed on the upper side of the left end of the processing shell 1; A plurality of air guide plates 16 are provided at the left and right ends of the middle and lower part of the processing chamber 15, and the plurality of air guide plates 16 are arranged at intervals and staggered. An air inlet 23 is provided at the lower side of the right end of the processing shell 1, and the air inlet 23 is communicated with the processing chamber 15, and the air inlet 23 is communicated with the smoke pipe 2. An air detector 43 is installed on the left side of the upper end of the processing chamber 15, and an air pressure detector 44 is installed on the right side of the upper end of the processing chamber 15. An exhaust port 46 is provided in the middle part of the upper end of the processing chamber 15, and a baffle plate 2 45 is rotatably provided in the exhaust port 46. The baffle plate 2 45 is fixedly connected to the connecting shaft 1, and the connecting shaft 1 passes through the front end of the exhaust port 46 and is fixedly connected to the external driving motor, and the driving motor is fixedly arranged at the front end of the processing shell 1; The waste heat evaporation mechanism includes a liquid storage chamber 7 arranged inside the liquid storage shell 5, a connecting port 19 is provided at the upper end of the liquid storage shell 5, the liquid storage chamber 7 is connected with the processing chamber 15 through the connecting port 19, a liquid outlet is provided at the left end of the liquid storage shell 5, the liquid outlet is connected with the liquid storage chamber 7, and the liquid outlet is connected with the inlet of the liquid delivery pipe 3, the outlet of the liquid delivery pipe 3 is connected with the liquid inlet 40, and a temperature detector 49 is installed at the right end of the liquid storage chamber 7, and the temperature detector 49, the air pressure detector 44 and the air detector 43 are electrically connected to the driving motor through the controller 1.

[0022] The beneficial effects of the above technical solution are: The liquid storage chamber 7 is connected to the processing chamber 15 through the connecting port 19, so that the processing shell 1 and the liquid storage shell 5 are sealed and connected to avoid leakage of the flue gas after entering the processing shell 1. The flue gas pipe 2 transports the flue gas to be desulfurized into the processing chamber 15 through the air inlet 23. The adsorbent containing ammonia enters the liquid spray pipe 17 through the liquid outlet and the liquid delivery pipe 3. The adsorbent containing ammonia is atomized and sent into the processing chamber 15 through the liquid spray head 18. The atomized adsorbent containing ammonia is mixed and reacted with the flue gas to be desulfurized in the processing chamber 15. The setting of the air guide plate 16 increases the residence time of the flue gas to be desulfurized in the processing chamber 15, thereby improving the mixing reaction effect of the adsorbent containing ammonia and the flue gas to be desulfurized. The temperature detector 49 is set to detect the temperature in the liquid storage chamber 7. When the waste liquid is evaporated and crystallized, an endothermic step is performed, so that the heat of the processing chamber 15 and the flue gas entering the liquid storage chamber 7 can be absorbed. When the temperature in the liquid storage chamber 7 drops to the target value, it means that the waste liquid falling into the liquid storage chamber 7 has absorbed the target heat that can achieve evaporation and crystallization. At this time, if the SOx content in the gas on the upper side of the processing chamber 15 detected by the air detector 43 meets the standard, and the air pressure on the upper side of the processing chamber 15 reaches the target value, the temperature detector 49, the air pressure detector 44 and the air detector 43 jointly control the operation of the drive motor through the controller 1, and the drive motor drives the baffle 2 45 to rotate through the connecting shaft 1, so that the exhaust port 46 is opened, so that the desulfurized gas is discharged through the exhaust pipe 6, and the exhaust flow rate of the exhaust pipe 6 and the intake flow rate of the flue gas pipe 2 remain the same.

[0023] Example 3 On the basis of Example 2, Figure 1-Figure 3As shown, the upper end of the liquid storage chamber 7 is connected to a sliding chamber 4, the sliding chamber 4 is slidably connected to a sliding block 1, a rotating shaft 14 is rotatably provided in the sliding block 1, the rotating shaft 14 is rotatably connected to a rotating plate 12, a sliding groove 1 is provided on the lower side of the rotating plate 12, and a rotating plate 2 11 is slidably provided in the sliding groove 1, a spring telescopic rod is fixedly provided between the sliding groove 1 and the rotating plate 2 11, a contact switch 48 is provided at the left end of the sliding chamber 4, a contact block 1 is provided at the left end of the sliding block 1, the contact switch 48 and the contact block 1 are correspondingly provided, and the contact switch 48 is electrically connected to the spring telescopic rod through the controller 2; The lower end of the liquid storage chamber 7 is connected to a sliding chamber 2 9, and the sliding chamber 2 9 is slidably connected to the sliding block 2. The sliding block 2 is rotatably provided with a rotating shaft 2 10, and the rotating shaft 2 10 is rotatably connected to the rotating plate 2 11. The left end of the sliding chamber 2 9 is provided with a contact switch 2 13, and the left end of the sliding block 2 is provided with a contact block 2. The contact switch 2 13 and the contact block 2 are correspondingly arranged, and the contact switch 2 13 is electrically connected to the power pump 47 through the controller 3; A liquid replenishing port is provided on the upper left side of the liquid storage shell 5, and a discharge port 8 is provided on the lower right side of the liquid storage shell 5. The power pump 47 is connected to the liquid storage chamber 7 through the liquid replenishing port. The power pump 47 is fixedly arranged at the left end of the liquid storage shell 5, and the discharge port 8 is connected to the sliding chamber 2 9 and the liquid storage chamber 7.

[0024] The beneficial effects of the above technical solution are: The rotating plate 1 12 and the rotating plate 2 11 are set with heat-insulating materials, and divide the liquid storage chamber 7 into two left and right spaces, and the left and right spaces are not connected. The space on the left is used to store the adsorbent containing ammonia, and the space on the right is connected with the processing chamber 15 through the connecting port 19. After a certain amount of flue gas is sent into the processing chamber 15, the air pressure in the processing chamber 15 increases, so that the air pressure in the right space of the liquid storage chamber 7 connected with the processing chamber 15 and the connecting port 19 increases. When the air pressure in the right space increases, the rotating plate 12 and the rotating plate 2 11 are squeezed to move. The rotating plate 12 and the rotating plate 2 11 first move to the left. The setting of the sliding block 1 guides the movement of the rotating plate 12, and the sliding block 2 The setting plays a guiding role in the movement of the rotating plate 12 and the rotating plate 11. When the rotating plates 12 and 11 move, the adsorbent containing ammonia is pushed into the liquid delivery pipe 3, thereby achieving the purpose of automatic liquid delivery. The setting of the air pressure detector 44 can ensure that the air pressure in the right space of the processing chamber 15 and the liquid storage chamber 7 connected thereto is always at the target value. If the air pressure in the right space of the processing chamber 15 and the liquid storage chamber 7 connected thereto is less than the target value, the baffle plate 45 still blocks the exhaust port 46 until the air pressure in the right space of the processing chamber 15 and the liquid storage chamber 7 connected thereto reaches the target value, thereby ensuring the normal movement of the rotating plates 12 and 11, so that the delivery of the adsorbent containing ammonia can be carried out normally. When the rotating plate 12 drives the contact block 1 on the sliding block 1 to contact the contact switch 1 48, the contact switch 1 48 starts to extend and retract the spring telescopic rod through the controller 1. At this time, the rotating plate 1 and the rotating plate 2 11 can rotate. During this process, the rotating plate 2 11 slides along the sliding groove 1 until the rotating plate 2 11 drives the contact block 2 on the sliding block 2 to contact the contact switch 2 13. The contact switch 2 13 controls the power pump 47 to work through the controller 3. The power pump 47 replenishes the adsorbent containing ammonia into the left space through the liquid replenishing port and opens the discharge port 8 at the same time. During this process, as the adsorbent containing ammonia is gradually replenished in the left space, the rotating plate 1 and the rotating plate 2 11 are pushed to return to their original positions, and the crystals formed after the evaporation and crystallization are discharged through the discharge port 8 and collected.

[0025] Example 4 On the basis of Example 1, Figure 1-Figure 3 As shown, the cleaning mechanism includes a cleaning shell 24, which is fixedly arranged on the outside of the flue gas pipe 2, and an annular cavity 25 is arranged inside the cleaning shell 24. A plurality of cleaning ports 26 are evenly distributed on the outer circumference of the flue gas pipe 2, and the cleaning ports 26 are connected with a cleaning head 27. One end of the cleaning port 26 away from the cleaning head 27 is connected with the annular cavity 25, and the upper end of the annular cavity 25 is connected with an inlet 37, and the inlet 37 is arranged at the upper end of the cleaning shell 24, and the inlet 37 is connected with a blocking cavity 36, and the blocking cavity 36 is connected with a cavity 31, and a matching block 33 is slidably provided in the cavity 31 for sliding connection, and a plurality of springs 32 are fixedly provided between the matching block 33 and the side end of the cavity 31, and one end of the matching block 33 away from the spring 32 is fixedly connected with the blocking block 35, and the blocking block 35 is slidably connected with the blocking cavity 36, and the blocking block 35 is correspondingly arranged with the inlet 37; The liquid spray pipe 17 passes through the right end of the treatment chamber 15 and is connected to the outside, and the lower end of the liquid spray pipe 17 is provided with an outlet 42, the outlet 42 is connected to the upper end of the connecting pipe 41, the lower end of the connecting pipe 41 is connected to the inlet 37, and the connecting pipe 41 is fixedly arranged between the lower end of the liquid spray pipe 17 and the upper end of the cleaning shell 24; The end of the flue gas pipe 2 close to the processing shell 1 is provided with an installation cavity, in which a mounting block 28 is slidably provided, a filter screen 29 is fixedly installed in the mounting block 28, and the filter screen 29 is arranged corresponding to the inside of the air inlet 23. The upper end of the mounting block 28 is fixedly connected to the connecting block 39, and the connecting block 39 is slidably connected to the connecting pipe 41. The lower end of the connecting block 39 is fixedly connected to the matching rod 34, and the matching rod 34 passes through the upper end of the cleaning shell 24 into the cavity 31 and is slidably connected to the inclined end of the matching block 33. The matching rod 34 is connected to the sealing The sealing block 38 is slidably connected, the sealing block 38 is slidably connected to the mounting block 28, the sealing block 38 is fixedly arranged at the upper end of the cleaning shell 24, the lower end of the mounting block 28 is fixedly connected to the connecting block 22 and the sealing block 230, the connecting block 22 passes through the liquid drop port 21 and contacts the baffle 20, the baffle 20 is rotatably arranged at the upper end of the liquid storage chamber 7 through the connecting shaft, a reset torsion spring is fixedly arranged between the connecting shaft and the front end of the liquid storage chamber 7, the liquid drop port 21 is arranged on the upper right side of the liquid storage shell 5, and the liquid drop port 21 is connected to the liquid storage chamber 7.

[0026] The beneficial effects of the above technical solution are: The filter screen 29 is set, when the flue gas enters the processing chamber 15 through the air inlet 23, the filter screen 29 can preliminarily filter the impurities and sulfur-containing substances in the flue gas, thereby improving the desulfurization effect of the flue gas. After the substance filtered by the filter screen 29 reaches a certain amount, the filter screen 29 can drive the mounting block 28 to move downward under the action of gravity, and the mounting block 28 drives the connecting block 1 39 and the sealing block 2 30 to move downward, so that the sealing block 2 30 is no longer in contact with the lower end of the cleaning shell 24, and the connecting block 1 39 drives the matching rod 34 to move downward. When the matching rod 34 moves downward, it pushes the matching block 33 to move, and the spring 32 is deformed. The matching block 33 drives the blocking block 35 to slide along the blocking cavity 36, and no longer blocks the inlet 37. At this time, the discharge port 8 is partially opened at the same time. In this process, part of the adsorbent containing ammonia can enter the annular cavity 25 through the outlet 42, the connecting pipe 41 and the inlet 37, and the adsorbent in the annular cavity 25 can enter the cleaning head 27 through the cleaning port 26. 7 sprays the adsorbent onto the filter screen 29 to clean the impurities attached to the filter screen 29 and react with the sulfide in the impurities. The waste liquid after the cleaning reaction passes through the gap between the mounting cavity and the mounting block 28 and falls into the liquid drop port 21. As the mounting block 28 moves downward, it can also drive the connecting block 22 to move downward. When the connecting block 22 moves downward, it can push the baffle 1 20 to rotate, and the reset torsion spring is deformed, so that the waste liquid after the cleaning reaction falls into the right space of the liquid storage cavity 7 for evaporation and crystallization process, until the filter screen 29 is cleaned. After the weight of the filter screen 29 is reduced, the mounting block 28 returns to its original position under the elastic action of the spring 32 and the reset torsion spring, thereby achieving the purpose of automatically cleaning the filter screen 29. The sealing block 1 38 and the sealing block 2 30 are made of rubber material and can undergo elastic changes, so that the sealing block 1 38 and the sealing block 2 30 can fit tightly with the mounting block 28, and are used to block the gap between the mounting cavity and the mounting block 28 to prevent smoke leakage.

[0027] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A desulfurization wastewater discharge control system, characterized in that: The invention comprises a processing shell (1), the lower end of the processing shell (1) is connected to a liquid storage shell (5), a waste heat evaporation mechanism is provided inside the liquid storage shell (5), the liquid storage shell (5) and the processing shell (1) are connected via a liquid delivery pipe (3) and a connecting port (19), a processing mechanism is provided inside the processing shell (1), the processing mechanism is connected to the liquid delivery pipe (3), an end of the processing shell (1) away from the liquid delivery pipe (3) is connected to a flue gas pipe (2), a cleaning mechanism is connected to the flue gas pipe (2), and the upper end of the processing shell (1) is connected to a discharge pipe (6).

2. A desulfurization wastewater discharge control system according to claim 1, characterized in that: The processing mechanism comprises a processing chamber (15) arranged inside the processing shell (1), a liquid spraying pipe (17) is arranged on the upper side of the processing chamber (15), the lower end of the liquid spraying pipe (17) is connected to a plurality of liquid spraying heads (18), the left end of the liquid spraying pipe (17) is connected to a liquid inlet (40), and the liquid inlet (40) is arranged on the upper side of the left end of the processing shell (1).

3. A desulfurization wastewater discharge control system according to claim 2, characterized in that: A plurality of air guide plates (16) are provided at both left and right ends of the middle and lower part of the processing chamber (15), and the plurality of air guide plates (16) are arranged at intervals and staggered. An air inlet (23) is provided at the lower side of the right end of the processing shell (1), the air inlet (23) is communicated with the processing chamber (15), and the air inlet (23) is communicated with the smoke pipe (2). An air detector (43) is installed at the left side of the upper end of the processing chamber (15), and an air pressure detector (44) is installed at the right side of the upper end of the processing chamber (15). An exhaust port (46) is provided at the middle part of the upper end of the processing chamber (15), and a baffle plate 2 (45) is rotatably provided in the exhaust port (46). The baffle plate 2 (45) is fixedly connected to a connecting shaft 1. The connecting shaft 1 passes through the front end of the exhaust port (46) and is fixedly connected to an external drive motor. The drive motor is fixedly arranged at the front end of the processing shell (1).

4. A desulfurization wastewater discharge control system according to claim 3, characterized in that: The waste heat evaporation mechanism comprises a liquid storage chamber (7) arranged inside a liquid storage shell (5); a communication port (19) is provided at the upper end of the liquid storage shell (5); the liquid storage chamber (7) is connected to the processing chamber (15) through the communication port (19); a liquid outlet is provided at the left end of the liquid storage shell (5); the liquid outlet is connected to the liquid storage chamber (7), and the liquid outlet is connected to the inlet of a liquid delivery pipe (3); the outlet of the liquid delivery pipe (3) is connected to the liquid inlet (40); a temperature detector (49) is installed at the right end of the liquid storage chamber (7); the temperature detector (49), the air pressure detector (44) and the air detector (43) are electrically connected to the drive motor through a controller 1.

5. A desulfurization wastewater discharge control system according to claim 4, characterized in that: The upper end of the liquid storage chamber (7) is connected to a sliding chamber (4), the sliding chamber (4) is slidably connected to a sliding block (1), a rotating shaft (14) is rotatably provided in the sliding block (1), the rotating shaft (14) is rotatably connected to a rotating plate (12), a sliding groove (1) is provided on the lower side of the rotating plate (12), and a rotating plate (11) is slidably provided in the sliding groove (1), a spring telescopic rod is fixedly provided between the sliding groove (1) and the rotating plate (11), a contact switch (48) is provided at the left end of the sliding chamber (4), a contact block (1) is provided at the left end of the sliding block (1), the contact switch (48) and the contact block (1) are correspondingly provided, and the contact switch (48) is electrically connected to the spring telescopic rod through a controller (2).

6. A desulfurization wastewater discharge control system according to claim 5, characterized in that: The lower end of the liquid storage chamber (7) is connected to a sliding chamber 2 (9), the sliding chamber 2 (9) is slidably connected to the sliding block 2, a rotating shaft 2 (10) is rotatably provided in the sliding block 2, the rotating shaft 2 (10) is rotatably connected to the rotating plate 2 (11), a contact switch 2 (13) is provided at the left end of the sliding chamber 2 (9), a contact block 2 is provided at the left end of the sliding block 2, the contact switch 2 (13) and the contact block 2 are correspondingly arranged, and the contact switch 2 (13) is electrically connected to the power pump (47) through the controller 3.

7. A desulfurization wastewater discharge control system according to claim 6, characterized in that: A liquid replenishing port is provided on the upper left end of the liquid storage shell (5), and a discharge port (8) is provided on the lower right end of the liquid storage shell (5). The power pump (47) is connected to the liquid storage chamber (7) through the liquid replenishing port. The power pump (47) is fixedly arranged at the left end of the liquid storage shell (5), and the discharge port (8) is connected to the sliding chamber 2 (9) and the liquid storage chamber (7).

8. A desulfurization wastewater discharge control system according to claim 4, characterized in that: The cleaning mechanism comprises a cleaning shell (24), the cleaning shell (24) being fixedly arranged outside the flue gas pipe (2), an annular cavity (25) being arranged inside the cleaning shell (24), a plurality of cleaning ports (26) being evenly distributed in the circumferential direction of the outer side of the flue gas pipe (2), the cleaning ports (26) being connected to a cleaning head (27), one end of the cleaning port (26) being away from the cleaning head (27) being connected to the annular cavity (25), the upper end of the annular cavity (25) being connected to an inlet (37), the inlet (37) being arranged at the cleaning shell (24) ), the inlet (37) is connected to the blocking cavity (36), the blocking cavity (36) is connected to the cavity (31), a matching block (33) is slidably provided in the cavity (31) and is slidably connected, a plurality of springs (32) are fixedly provided between the side ends of the matching block (33) and the cavity (31), one end of the matching block (33) away from the spring (32) is fixedly connected to the blocking block (35), the blocking block (35) is slidably connected to the blocking cavity (36), and the blocking block (35) and the inlet (37) are arranged correspondingly.

9. A desulfurization wastewater discharge control system according to claim 8, characterized in that: The liquid spray pipe (17) passes through the right end of the treatment chamber (15) and is connected to the outside. The lower end of the liquid spray pipe (17) is provided with an outlet (42). The outlet (42) is connected to the upper end of the connecting pipe (41). The lower end of the connecting pipe (41) is connected to the inlet (37). The connecting pipe (41) is fixedly arranged between the lower end of the liquid spray pipe (17) and the upper end of the cleaning shell (24).

10. A desulfurization wastewater discharge control system according to claim 9, characterized in that: An installation cavity is provided at one end of the flue gas pipe (2) close to the treatment shell (1), a mounting block (28) is slidably provided in the installation cavity, a filter screen (29) is fixedly installed in the installation block (28), the filter screen (29) is arranged corresponding to the inside of the air inlet (23), the upper end of the installation block (28) is fixedly connected to a connecting block (39), the connecting block (39) is slidably connected to the connecting pipe (41), the lower end of the connecting block (39) is fixedly connected to a matching rod (34), the matching rod (34) penetrates the upper end of the cleaning shell (24) into the cavity (31) and is slidably connected to the inclined end of the matching block (33), the matching rod (34) is fixedly connected to the sealing The sealing block 1 (38) is slidably connected, the sealing block 1 (38) is slidably connected to the mounting block (28), the sealing block 1 (38) is fixedly arranged at the upper end of the cleaning shell (24), the lower end of the mounting block (28) is fixedly connected to the connecting block 2 (22) and the sealing block 2 (30), the connecting block 2 (22) passes through the liquid drop opening (21) and contacts the baffle 1 (20), the baffle 1 (20) is rotatably arranged at the upper end of the liquid storage chamber (7) through the connecting shaft, a return torsion spring is fixedly arranged between the connecting shaft and the front end of the liquid storage chamber (7), the liquid drop opening (21) is arranged on the right side of the upper end of the liquid storage shell (5), and the liquid drop opening (21) is communicated with the liquid storage chamber (7).

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