Anti-blocking high-salinity wastewater evaporation device and intelligent control method

Abstract

The invention discloses an anti-blocking high-salinity wastewater evaporation device and an intelligent control method. The anti-blocking high-salinity wastewater evaporation device comprises an anti-blocking high-salinity wastewater atomizer, a wastewater supply unit, a gas phase supply unit, a monitoring unit and an intelligent control cabinet, the wastewater supply unit is connected with a liquid phase inlet of the atomizer through a pipeline; the gas phase supply unit is connected with a gas phase inlet of the atomizer through a pipeline; the atomizer comprises a shell, a liquid phase inlet and a gas phase inlet; the gas phase inlet is connected with the turbulent flow component through a gas phase pipeline; the mixing chamber is communicated with the liquid phase inlet and the gas phase nozzle; the atomization jet flow outlet is communicated with the mixing chamber; and a pulse airflow outlet of the pulse blowing device is communicated with the gas phase pipeline. The problem that the high-salinity wastewater atomizer is easy to block is solved through pulse airflow unblocking and bottom mechanical deslagging; high-speed jet flow and external short pipe design are adopted, so that the equipment is far away from high-temperature corrosive flue gas, and the service life is prolonged; a control system is matched to adjust parameters in real time according to working conditions, complete evaporation of the wastewater is ensured, and the system is high in adaptability, stable in operation, simple and convenient to maintain and low in energy consumption.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and particularly relates to an anti-clogging high-salt wastewater evaporation device and intelligent control method in the process of wet flue gas desulfurization wastewater treatment. Background Technology

[0002] In industries such as thermal power, steel, and carbon, the high-salt wastewater generated by wet desulfurization has a complex composition and is highly corrosive, making "zero discharge" a major challenge in the environmental protection field. The current mainstream "pretreatment + membrane concentration + evaporation crystallization" process suffers from problems such as high investment, high energy consumption, and easy scaling and corrosion of equipment.

[0003] Using the waste heat from industrial kiln flue gas to evaporate wastewater is an economical and feasible alternative. However, the atomizer, as the core equipment, faces serious bottlenecks in high-salt, high-temperature, and corrosive flue gas environments: its interior and nozzles are prone to blockage due to crystal precipitation from water evaporation, requiring frequent shutdowns for cleaning; the spray guns extending into the flue are susceptible to acid dew point corrosion, high-temperature oxidation, and dust erosion, resulting in extremely short lifespans; and the atomization system with fixed parameters is difficult to adapt to large fluctuations in flue gas conditions, easily leading to incomplete evaporation, wet walls, or ash accumulation. Summary of the Invention

[0004] The purpose of this invention is to propose an anti-clogging high-salt wastewater evaporation device and intelligent control method to solve the problems of easy crystallization and clogging of atomizers, poor corrosion resistance, and insufficient adaptability to operating conditions. This device achieves long-term, disassembly-free operation through a dual cleaning design of pulse jet cleaning and mechanical slag removal. The external installation method using high-speed jets significantly extends the equipment's lifespan. Furthermore, relying on an intelligent control system, atomization parameters are dynamically adjusted to adapt to flue gas fluctuations, ultimately achieving efficient, stable, and low-energy-consumption evaporation treatment of high-salt wastewater in harsh industrial environments.

[0005] To achieve the above objectives, the technical solution of the present invention is: an anti-clogging high-salt wastewater evaporation device, characterized in that it comprises: an anti-clogging high-salt wastewater atomizer, a wastewater supply unit, a gas phase supply unit, a monitoring unit, and an intelligent control cabinet; the wastewater supply unit is connected to the liquid phase inlet of the anti-clogging high-salt wastewater atomizer via a pipeline; the gas phase supply unit is connected to the gas phase inlet of the anti-clogging high-salt wastewater atomizer via a pipeline; the anti-clogging high-salt wastewater atomizer includes a shell, a liquid phase inlet, and a gas phase inlet; the gas phase inlet is connected to a turbulence-inducing component via a gas phase pipeline, and a gas phase nozzle is disposed at the outlet end of the turbulence-inducing component; a mixing chamber is connected to the liquid phase inlet and the outlet end of the gas phase nozzle; an atomized jet outlet is connected to the mixing chamber; and a pulse jet device includes a pulse gas chamber and a pulse diaphragm, the pulse gas flow outlet of which is connected to the gas phase pipeline.

[0006] Furthermore, one end of the housing is provided with an atomizing jet outlet, the flow rate of which is configured to be 35-50 m / s; the inner wall of the turbulence-inducing component is spiral-shaped to form a rotating vortex in the gaseous medium entering the mixing chamber; the upper part of the housing of the anti-clogging high-salt wastewater atomizer is also provided with an air vent, which is connected to the mixing chamber.

[0007] Furthermore, the impurity discharge mechanism also includes a lower chamber located below the mixing chamber; the columnar lower chamber has its top directly connected to the bottom of the mixing chamber, and the lower part of the lower chamber is provided with an impurity discharge port; An impurity discharge push rod has a sealing plug fixedly connected to its top end. The impurity discharge push rod passes vertically through the bottom of the lower chamber. The sealing plug is located inside the lower chamber, and its horizontal cross-sectional shape matches the inner wall of the lower chamber. A control handle is provided at the lower end of the impurity discharge push rod.

[0008] Furthermore, the anti-clogging high-salt wastewater atomizer is externally installed via a wear-resistant ceramic sleeve mounted on the wall of the evaporation tower or flue; the atomizing jet outlet extends into the wear-resistant ceramic sleeve, and the end of the atomizing jet outlet does not extend beyond the end of the wear-resistant ceramic sleeve that extends into the tower.

[0009] Furthermore, the intelligent control cabinet has a built-in PLC controller, which is connected to the monitoring unit, wastewater supply unit, gas supply unit, pulse jet cleaning device and impurity discharge mechanism to form a closed-loop control system.

[0010] Furthermore, the gas phase supply unit includes two independent media supply branches, namely a first branch and a second branch. The first branch includes a compressed air tank, a normally open solenoid valve, and a precision pressure regulating valve, which are connected in sequence via a gas path. The outlet of the precision pressure regulating valve is connected to the gas phase inlet via a pipeline. The second branch includes a switching solenoid valve and a pulse jet device, which is installed on the anti-clogging high-salt wastewater atomizer. The pulse airflow outlet of the pulse jet device is connected to the gas phase pipeline.

[0011] Furthermore, the wastewater supply unit includes a high-pressure variable frequency water pump, a pressure transmitter, a precision filter, a wastewater flow meter, and a regulating valve connected sequentially along the wastewater conveying direction via pipelines. The outlet end of the regulating valve is connected to the liquid phase inlet via a pipeline.

[0012] Furthermore, the monitoring unit includes a flue gas flow meter and a temperature sensor installed at the inlet of the evaporation tower.

[0013] A smart control method for anti-clogging high-salt wastewater evaporation based on the device described in any one of claims 1 to 3, comprising the following steps: S1 operating condition monitoring: Real-time collection of flue gas flow rate Q, flue gas temperature T, wastewater pressure P, pressure difference ΔP before and after the anti-clogging high-salt wastewater atomizer, and wastewater chloride ion concentration C. S2 performs dynamic adjustment: S2.1 Wastewater Adjustment: Control the frequency of the high-pressure variable frequency water pump to make the actual wastewater flow rate Q equal to the target wastewater flow rate Q. target match; S2.2 Gas Path Regulation: Control the precision pressure regulating valve to adjust the gas phase pressure so that the actual gas-liquid ratio reaches R. target ; S2.3 Media Switching: If the chloride ion concentration in the wastewater C > 20000 mg / L or the flue gas temperature T < 150℃, the gas phase supply unit is controlled to switch the atomizing medium to steam; when T ≥ 180℃, it switches back to compressed air. S3 Automatic Anti-Congestion Control: S3.1 Pulse Clearing: Every 2 to 4 hours of operation, the solenoid valve and pulse jet device are controlled to release a pulse airflow with a duration of 0.1 to 0.3 seconds into the mixing chamber through the pulse diaphragm, where the gas pressure in the pulse chamber is ≥0.8MPa. S3.2 Differential Pressure Triggered Unclogging: If the differential pressure ΔP across the anti-clogging high-salt wastewater atomizer continuously exceeds the set threshold ΔP set If the pressure of 20-50 kPa exceeds 30 seconds, the pulse clearing step described above should be executed immediately. S3.3 Bottom Slag Discharge: Every cumulative operating time t2 = 8 to 12 hours, the impurity discharge push rod is controlled to perform an "upward-downward" action once, so that the sediment is discharged from the impurity discharge port through the lower chamber.

[0014] The beneficial effects of this invention are as follows: This invention solves the problem of easy clogging of high-salt wastewater atomizers by combining pulse airflow online clogging with bottom mechanical slag discharge; the high-speed jet and external short pipe design keep the equipment away from high-temperature corrosive flue gas, significantly extending its service life; with the intelligent control system, parameters can be adjusted in real time according to the working conditions to ensure complete evaporation of wastewater. The system is highly adaptable, stable in operation, easy to maintain, and has low energy consumption.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connections between the various units of the device of the present invention; Figure 2 This is a schematic cross-sectional view of the atomizer of the present invention; Figure 3 This is a schematic diagram of the impurity discharge push rod of the atomizer of the present invention being pushed upwards; Figure 4This is a schematic diagram of the impurity discharge push rod of the atomizer of the present invention being pulled down; Figure 5 This is a schematic diagram of the turbulence-disrupting component of the present invention.

[0017] In the diagram: 1 Anti-clogging high-salt wastewater atomizer, 6 High-pressure variable frequency water pump, 7 Precision filter, 8 Wastewater flow meter, 9 Pressure transmitter, 11 Compressed air storage tank, 12 Precision pressure regulating valve, 13 Switching solenoid valve, 14 Normally open solenoid valve, 17 Flue gas flow meter, 18 Temperature sensor, 19 Intelligent control cabinet, 101 Liquid phase inlet, 102 Gas phase inlet, 103 Pulse gas chamber, 104 Pulse diaphragm, 105 Mixing chamber, 106 Gas phase nozzle, 107 Wear-resistant ceramic sleeve, 108 Atomizing jet outlet, 109 Impurity discharge push rod, 110 Turbulence component, 111 Lower chamber, 112 Impurity discharge port, 114 Vent port, 116 Pulse jet blowing device, 120 Sealing plug, 121 Control handle. Detailed Implementation Example

[0018] A clog-resistant high-salt wastewater evaporation device, such as Figure 2 As shown, it includes: an anti-clogging high-salt wastewater atomizer 1, a wastewater supply unit, a gas phase supply unit, a monitoring unit, and an intelligent control cabinet 19; the wastewater supply unit is connected to the liquid phase inlet 101 of the anti-clogging high-salt wastewater atomizer 1 via a pipeline for conveying high-salt wastewater; the gas phase supply unit is connected to the gas phase inlet 102 of the anti-clogging high-salt wastewater atomizer 1 via a pipeline for providing atomizing medium; the monitoring unit is used to collect the operating parameters of the evaporation system in real time; the anti-clogging high-salt wastewater atomizer 1 includes a shell 100, a liquid phase inlet 101 and a gas phase inlet 102, for respectively introducing high-salt wastewater and atomizing gas phase medium; the gas phase inlet... 102 is connected to the turbulence-inducing component 110 via the gas phase pipeline 117. The turbulence-inducing component 110 has a spiral inner wall for forming a rotating vortex in the gas phase medium. The gas phase nozzle 106 is disposed at the outlet end of the turbulence-inducing component 110. The mixing chamber 105 is connected to the liquid phase inlet 101 and the outlet end of the gas phase nozzle 106 for mixing the rotating vortex with the high-salt wastewater and atomizing the wastewater. The atomizing jet outlet 108 is connected to the mixing chamber 105 for spraying the atomized gas-liquid mixture at a flow rate of 35-50 m / s. The pulse jet blowing device 116 has its pulse airflow outlet connected to the gas phase pipeline 117.

[0019] It should be noted that the specific structure of the device and the function of each component are as follows: Core atomizing unit: Anti-clogging high-salt wastewater atomizer 1: Shell 100: Serves as the structural support and pressure boundary of the entire anti-clogging high-salt wastewater atomizer, integrating internal functional components into one unit. Liquid phase inlet 101: Serves as the only channel for high-salt wastewater to enter the anti-clogging high-salt wastewater atomizer, connected to the external wastewater supply pipeline flange. Gas phase inlet 102: Serves as the only channel for the atomizing medium, compressed air or steam, to enter the anti-clogging high-salt wastewater atomizer, connected to the external air source pipeline. Gas phase pipeline 117 and turbulence-inducing component 110: Gas phase inlet 102 is connected to the inlet of turbulence-inducing component 110 through the internal gas phase pipeline 117. The inner wall of the turbulence-inducing component 110 is machined with spiral channels of a specific pitch, whose core function is to forcibly convert the linearly flowing gas phase medium into a high-speed rotating vortex. Gas phase nozzle 106: Installed at the outlet end of the turbulence-inducing component 110, its nozzle is precision-machined to confine the rotating airflow into a concentrated rotating jet, precisely spraying it into the mixing chamber. Mixing chamber 105: A specially designed cavity where the wastewater from the liquid phase inlet 101 and the high-speed rotating airflow from the gas phase nozzle 106 converge. Its core function is to provide a fully mixed space, allowing the rotating airflow to generate intense shearing and tearing forces on the wastewater column, thereby atomizing the wastewater into fine droplets with a particle size of 100-1000 micrometers.

[0020] This embodiment is further configured such as... Figure 3 and Figure 4 As shown, the impurity discharge mechanism also includes a lower chamber 111 located below the mixing chamber 105; the columnar lower chamber 111 has its top directly connected to the bottom of the mixing chamber 105, and the lower chamber 111 is provided with an impurity discharge port 112 at its lower part. An impurity discharge push rod 109 has a sealing plug 120 fixedly connected to its top end. The impurity discharge push rod 109 extends vertically through the bottom of the lower chamber 111. The sealing plug 120 is located inside the lower chamber 111, and its horizontal cross-sectional shape matches the inner wall of the lower chamber 111. A control handle 121 is provided at the lower end of the impurity discharge push rod 109 for sealing the bottom outlet of the lower chamber 111 and controlling the movement of the impurity discharge push rod 109. It should be noted that the impurity discharge mechanism is configured such that when the impurity discharge push rod 109 is pushed upward, the sealing plug 120 moves upward and enters the mixing chamber 105, so that the solid impurities deposited at the bottom of the mixing chamber 105 are scraped and enter the lower chamber 111; when the impurity discharge push rod 109 is pulled downward, the plunger moves downward, so that the solid impurities accumulated in the lower chamber 111 are discharged through the impurity discharge port 112.

[0021] It should be noted that the pulse jet device 116 consists of a pulse air chamber 103 and a pulse diaphragm 104. The pulse air chamber 103 is a small air chamber used to introduce high-pressure air at 0.8-1.0 MPa. The pulse diaphragm 104 is a pressure-resistant elastic diaphragm that acts as a valve for rapid opening and closing. Their synergistic effect is that upon receiving a command, the diaphragm 104 opens instantaneously, and the high-pressure gas in the pulse air chamber 103 is injected into the gas phase pipeline 117 through the connection point in a very short time, such as 0.2 seconds, forming a strong shock wave that washes over the turbulence-clearing component 110, the gas phase nozzle 106, and the inner wall of the mixing chamber 105, achieving online and powerful unblocking.

[0022] In this embodiment, the housing is further configured such that one end has an atomizing jet outlet 108, the flow rate of which is configured to be 35-50 m / s, for spraying the atomized gas-liquid mixture out in the form of a high-speed jet. Figure 1 As shown, the inner wall of the turbulence-inducing component 110 is spiral-shaped to form a rotating vortex in the gaseous medium entering the mixing chamber 105; the upper part of the housing 100 of the anti-clogging high-salt wastewater atomizer 1 is also provided with a vent 114, which is connected to the mixing chamber 105, and a manually controlled opening and closing valve is provided outside the vent 114.

[0023] In this embodiment, the impurity discharge mechanism further includes a lower chamber 111 located below the mixing chamber 105; the impurity discharge push rod 109 drives an elastic movable base plate to move, so that the solid impurities deposited at the bottom of the mixing chamber 105 are pushed to the lower chamber 111 and discharged through the impurity discharge port 112. The impurity discharge mechanism is located at the bottom of the mixing chamber 105 and includes the impurity discharge push rod 109, which is used to discharge the solid impurities deposited at the bottom through the impurity discharge port 112 under the control of the intelligent control cabinet 19. In this embodiment, the anti-clogging high-salt wastewater atomizer 1 is externally installed via a wear-resistant ceramic sleeve 107 mounted on the wall of the evaporation tower or flue; the atomizing jet outlet 108 extends into the wear-resistant ceramic sleeve 107, and the end of the atomizing jet outlet 108 does not extend beyond the end of the wear-resistant ceramic sleeve 107 that extends into the flue.

[0024] This embodiment is further configured such as... Figure 5As shown, the intelligent control cabinet 19 has a built-in PLC controller, which is connected to the monitoring unit, wastewater supply unit, gas phase supply unit, pulse jet cleaning device, and impurity discharge mechanism to form a closed-loop control system. The intelligent control cabinet 19 is configured to: dynamically adjust the operating parameters of the wastewater supply unit and gas phase supply unit based on the operating parameters collected by the monitoring unit to control the atomization state; and control the pulse jet cleaning device and impurity discharge mechanism to perform cleaning and slag removal operations according to preset conditions or the operating parameters. It can automatically control the selection and switching of the media supply branch based on the wastewater salinity concentration signal or flue gas temperature signal collected by the monitoring unit.

[0025] It should be noted that the control system operation is explained in detail below: 1. Start-up preparation and gas path establishment Gas phase supply unit start-up: After the system is powered on, the intelligent control cabinet 19 first sends an opening command to the normally open solenoid valve 14 downstream of the compressed air storage tank 11.

[0026] Pressure regulation: Simultaneously, control cabinet 19 sends an initial pressure setpoint, such as 0.5 MPa, to precision pressure regulating valve 12. Compressed air, after being precisely pressure regulated by this valve, is delivered through pipeline to the gas phase inlet 102 of the anti-clogging high-salt wastewater atomizer.

[0027] 2. Hydraulic circuit start-up and coordinated commissioning Water supply preparation: The wastewater in the desulfurization wastewater raw water tank has been pre-treated by pretreatment units such as neutralization and flocculation, and is ready for supply.

[0028] Core power startup: The intelligent control cabinet 19 calculates the required wastewater flow rate and pressure based on real-time monitored flue gas parameters. Subsequently, it sends a start command and target frequency value to the high-pressure variable frequency water pump 6. The pump starts, drawing pre-treated wastewater from the raw water tank.

[0029] Pressure monitoring: Subsequently, the wastewater passes through pressure transmitter 9, which measures and feeds back the pipeline pressure signal to control cabinet 19 in real time.

[0030] Filtration protection: The pumped wastewater first flows through the precision filter 7 to filter out fine solid particles that may clog the atomizer.

[0031] Flow monitoring: The filtered wastewater passes through the wastewater flow meter 8, which measures and feeds back the instantaneous flow signal to the control cabinet 19 in real time.

[0032] Final Regulation and Delivery: Finally, the wastewater flows through regulating valve 10. Control cabinet 19 finely adjusts the valve opening based on feedback signals of flow rate and pressure, ensuring the wastewater flow rate and pressure precisely reach the set values. Ultimately, the wastewater is precisely delivered through pipeline to the liquid phase inlet 101 of the anti-clogging high-salt wastewater atomizer.

[0033] 3. System Interconnection and Stable Operation Gas-liquid mixing atomization: At the moment the liquid circuit is put into operation, the high-pressure wastewater and the stable rotating airflow established in step 2 are strongly mixed and sheared in the mixing chamber of the atomizer to complete atomization.

[0034] Closed-loop control established: The intelligent control cabinet 19 continuously receives feedback signals from the wastewater flow meter 8 and the pressure transmitter 9, and compares them with the target values. Through a PID control algorithm, the frequency of the high-pressure variable frequency water pump 6 and the opening of the regulating valve 10 are dynamically fine-tuned, while the precision pressure regulating valve 12 is also fine-tuned in conjunction to ensure that the gas-liquid ratio and atomization state are always optimal. The system thus enters a stable automatic closed-loop operation state.

[0035] This embodiment is further configured such that the gas phase supply unit includes two independent media supply branches, namely a first branch and a second branch; the first branch includes a compressed air tank 11, a normally open solenoid valve 14, and a precision pressure regulating valve 12, which are sequentially connected via a gas path, and the outlet of the precision pressure regulating valve 12 is connected to the gas phase inlet 102 via a pipeline; the second branch includes a switching solenoid valve 13 and a pulse jet device 116, which is installed on the anti-clogging high-salt wastewater atomizer 1, and the pulse airflow outlet of the pulse jet device 116 is connected to the gas phase pipeline 117. The precision pressure regulating valve 12 is used to control the pressure of the atomized medium; the pulse jet device 116 is used to generate a clearing pulse; and the normally open solenoid valve 14 is used to maintain a normal flow path. A pipeline installed between the pulse gas chamber 103 and an external high-pressure gas source serves as the air intake control switch for the pulse jet device. The solenoid valve is normally closed, opening only momentarily upon receiving a clearing command from the intelligent control cabinet 19. This allows high-pressure gas to enter the pulse gas chamber 103 and triggers the pulse diaphragm 104 to activate, achieving pulse clearing. It closes immediately after clearing, cutting off the gas supply.

[0036] In this embodiment, the wastewater supply unit is further configured to include a high-pressure variable frequency water pump 6, a pressure transmitter 9, a precision filter 7, a wastewater flow meter 8, and a regulating valve 10 connected sequentially along the wastewater conveying direction via pipelines. The outlet end of the regulating valve 10 is connected to the liquid phase inlet 101 via a pipeline.

[0037] The monitoring unit includes a flue gas flow meter 17 and a temperature sensor 18 installed at the inlet of the evaporator tower. Example

[0038] A smart control method for anti-clogging high-salt wastewater evaporation based on the device described in Embodiment 1 includes the following steps: S1: Operating condition monitoring: Real-time collection of flue gas flow rate Q, flue gas temperature T, wastewater pressure P, pressure difference ΔP before and after the atomizer, and wastewater chloride ion concentration C. S2: Perform dynamic adjustment: S2.1: Wastewater Adjustment: Control the frequency of the high-pressure variable frequency water pump 6 to make the actual wastewater flow rate Q equal to the target wastewater flow rate Q. target match; S2.2: Gas Path Regulation: Control the precision pressure regulating valve 12 to adjust the gas phase pressure so that the actual gas-liquid ratio reaches R. target ; S2.3: Medium switching: If the chloride ion concentration in the wastewater C > 20000 mg / L or the flue gas temperature T < 150℃, the gas phase supply unit is controlled to switch the atomizing medium to steam; when T ≥ 180℃, it switches back to compressed air. S3: Automatic Anti-Clogging Control S3.1: Pulse unblocking: Every 2 to 4 hours of operation, the solenoid valve 13 and the pulse jet device 116 are controlled to operate, so that the gas with a pressure ≥0.8MPa in the pulse gas chamber 103 is released into the mixing chamber 105 through the pulse diaphragm 104 in a pulse airflow with a duration of 0.1 to 0.3 seconds. S3.2: Pressure difference triggers unblocking: If the pressure difference ΔP before and after the atomizer continuously exceeds the set threshold ΔP set（ ΔP set If the pressure (20-50 kPa) exceeds 30 seconds, then immediately execute the pulse clearing step S4.1. S3.3: Bottom slag discharge: Every cumulative operating time t2 = 8 to 12 hours, the impurity discharge push rod 109 is controlled to perform an "upward-downward" action once, so that the sediment is discharged from the impurity discharge port 112 through the lower chamber 111.

[0039] It should be noted that the control system operation is explained in detail below: 1. Start-up preparation and gas path establishment Gas phase supply unit start-up: After the system is powered on, the intelligent control cabinet 19 first sends an opening command to the normally open solenoid valve 14 downstream of the compressed air storage tank 11.

[0040] Pressure regulation: Simultaneously, control cabinet 19 sends an initial pressure setpoint, such as 0.5 MPa, to precision pressure regulating valve 12. Compressed air, after being precisely pressure regulated by this valve, is delivered through pipeline to the gas phase inlet 102 of the anti-clogging high-salt wastewater atomizer.

[0041] 2. Hydraulic circuit start-up and coordinated commissioning Water supply preparation: The wastewater in the desulfurization wastewater raw water tank has been pre-treated by pretreatment units such as neutralization and flocculation, and is ready for supply.

[0042] Core power startup: The intelligent control cabinet 19 calculates the required wastewater flow rate and pressure based on real-time monitored flue gas parameters. Subsequently, it sends a start command and target frequency value to the high-pressure variable frequency water pump 6. The pump starts, drawing pre-treated wastewater from the raw water tank.

[0043] Pressure monitoring: Subsequently, the wastewater passes through pressure transmitter 9, which measures and feeds back the pipeline pressure signal to control cabinet 19 in real time.

[0044] Filtration protection: The pumped wastewater first flows through the precision filter 7 to filter out fine solid particles that may clog the atomizer.

[0045] Flow monitoring: The filtered wastewater passes through the wastewater flow meter 8, which measures and feeds back the instantaneous flow signal to the control cabinet 19 in real time.

[0046] Final Regulation and Delivery: Finally, the wastewater flows through regulating valve 10. Control cabinet 19 finely adjusts the valve opening based on feedback signals of flow rate and pressure, ensuring the wastewater flow rate and pressure precisely reach the set values. Ultimately, the wastewater is precisely delivered through pipeline to the liquid phase inlet 101 of the anti-clogging high-salt wastewater atomizer.

[0047] Finally, it should be noted that the above is only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention (such as the application of various formulas, the order of steps, etc.) without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A clog-resistant high-salt wastewater evaporation device, characterized in that, include: The system includes an anti-clogging high-salt wastewater atomizer (1), a wastewater supply unit, a gas phase supply unit, a monitoring unit, and an intelligent control cabinet (19). The wastewater supply unit is connected to the liquid phase inlet (101) of the anti-clogging high-salt wastewater atomizer (1) via a pipeline. The gas phase supply unit is connected to the gas phase inlet (102) of the anti-clogging high-salt wastewater atomizer (1) via a pipeline. The anti-clogging high-salt wastewater atomizer (1) includes a housing (100), a liquid phase inlet (101), and a gas phase inlet (102). The gas phase inlet (101) is connected to the liquid phase inlet (102). 2) The gas phase nozzle (106) is connected to the turbulence-inducing component (110) via the gas phase pipeline (117) and is located at the outlet end of the turbulence-inducing component (110); the mixing chamber (105) is connected to the liquid phase inlet (101) and the outlet end of the gas phase nozzle (106); the atomizing jet outlet (108) is connected to the mixing chamber (105); the pulse jet device (116) includes a pulse gas chamber (103) and a pulse diaphragm (104), and its pulse airflow outlet is connected to the gas phase pipeline (117).

2. The apparatus according to claim 1, characterized in that, One end of the housing (100) is provided with an atomizing jet outlet (108), the flow rate of which is configured to be 35-50 m / s; the inner wall of the turbulence component (110) is spiral-shaped so that the gas phase medium entering the mixing chamber (105) forms a rotating vortex; the upper part of the housing (100) of the anti-clogging high-salt wastewater atomizer (1) is also provided with an air vent (114), which is connected to the mixing chamber (105).

3. The apparatus according to claim 1, characterized in that, The impurity discharge mechanism also includes a lower chamber (111) located below the mixing chamber (105); the columnar lower chamber (111) has its top directly connected to the bottom of the mixing chamber (105), and the lower part of the lower chamber (111) is provided with an impurity discharge port (112). An impurity discharge push rod (109) is fixedly connected to a sealing plug (120) at its top end. The impurity discharge push rod (109) passes through the bottom of the lower chamber (111) in a vertical direction. The sealing plug (120) is located inside the lower chamber (111), and its horizontal cross-sectional shape matches the inner wall of the lower chamber (111). A control handle (121) is provided at the lower end of the impurity discharge push rod (109).

4. The apparatus according to claim 1, characterized in that, The anti-clogging high-salt wastewater atomizer (1) is externally installed by a wear-resistant ceramic sleeve (107) installed on the wall of the evaporation tower or flue; the atomizing jet outlet (108) extends into the wear-resistant ceramic sleeve (107), and the end of the atomizing jet outlet (108) does not extend beyond the end of the wear-resistant ceramic sleeve (107) that extends into the tower.

5. The apparatus according to claim 1, characterized in that, The intelligent control cabinet (19) has a built-in PLC controller, which is connected to the monitoring unit, wastewater supply unit, gas supply unit, pulse jet blowing device and impurity discharge mechanism to form a closed-loop control system.

6. The apparatus according to claim 1, characterized in that, The gas phase supply unit includes two independent medium supply branches, which include a first branch and a second branch. The first branch includes a compressed air storage tank (11), a normally open solenoid valve (14), and a precision pressure regulating valve (12). The compressed air storage tank (11), the normally open solenoid valve (14), and the precision pressure regulating valve (12) are connected in sequence through a gas path. The outlet of the precision pressure regulating valve (12) is connected to the gas phase inlet (102) through a pipeline. The second branch includes a switching solenoid valve (13) and a pulse jet device (116). The pulse jet device (116) is installed on the anti-clogging high-salt wastewater atomizer (1). The pulse airflow outlet of the pulse jet device (116) is connected to the gas phase pipeline (117).

7. The apparatus according to claim 1, characterized in that, The wastewater supply unit includes a high-pressure variable frequency water pump (6), a pressure transmitter (9), a precision filter (7), a wastewater flow meter (8), and a regulating valve (10) connected in sequence along the wastewater conveying direction via pipelines. The outlet end of the regulating valve (10) is connected to the liquid inlet (101) via a pipeline.

8. The apparatus according to claim 1, characterized in that, The monitoring unit includes a flue gas flow meter (17) and a temperature sensor (18) installed at the inlet of the evaporator tower.

9. A method for intelligent control of anti-clogging high-salt wastewater evaporation based on the device described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1 operating condition monitoring: Real-time collection of flue gas flow rate Q, flue gas temperature T, wastewater pressure P, pressure difference ΔP before and after the atomizer, and wastewater chloride ion concentration C. S2 performs dynamic adjustment: S2.1 Wastewater Adjustment: Control the frequency of the high-pressure variable frequency water pump (6) to make the actual wastewater flow rate Q equal to the target wastewater flow rate Q. target match; S2.2 Gas Path Regulation: Control the precision pressure regulating valve (12) to adjust the gas phase pressure so that the actual gas-liquid ratio reaches R. target ; S2.3 Media Switching: If the chloride ion concentration in the wastewater C > 20000 mg / L or the flue gas temperature T < 150℃, the gas phase supply unit is controlled to switch the atomizing medium to steam; when T ≥ 180℃, it is switched back to compressed air. S3 Automatic Anti-Congestion Control: S3.1 Pulse unblocking: Every 2 to 4 hours of operation, the solenoid valve (13) and the pulse jet device (116) are controlled to operate, so that the gas with a pressure ≥0.8MPa in the pulse gas chamber (103) is released into the mixing chamber (105) through the pulse diaphragm (104) in a pulse airflow with a duration of 0.1 to 0.3 seconds. S3.2 Differential Pressure Triggered Unclogging: If the differential pressure ΔP across the anti-clogging high-salt wastewater atomizer continuously exceeds the set threshold ΔP set If the pressure is between 20 and 50 kPa and exceeds 30 seconds, the pulse clearing step described above should be executed immediately. S3.3 Bottom slag discharge: For every cumulative running time t2 = 8 to 12 hours, control the impurity discharge push rod (109) to perform an "upward-downward" action once, and discharge the sediment through the lower chamber (111) from the impurity discharge port (112).

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