CN114733647B - A single power supply combined dust removal device and method - Google Patents

Abstract

The invention discloses a single power supply combined dust removal device and a method thereof. The high-voltage DC power supply supplies power to the three circuits of sound wave, spray and static electricity. The voltage is adjusted through the transformer and inverter. Each circuit is connected with an ammeter and a voltmeter. Generator, the spray enters the dust removal room from the base of the dust removal room, the dust generator sprays dust from the side of the dust removal room through the air compressor, the dust collection plate and the corona wire are fixed in the dust removal room in parallel, the laser transmitter, the receiving target and the laser power meter Used to measure the dust removal effect of the device. The invention uses a single power supply to reduce dust removal energy consumption, and parameters such as voltage, spray volume, and sound frequency are adjustable, and dust is sprayed and collected in a closed environment, and the effect and energy of the device are measured by using a laser power meter, an ammeter, and a voltmeter. It realizes the high efficiency, low energy consumption, adjustability, environmental protection and data visualization of dust removal.

Description

A device and method for combined dust removal with single power supply

technical field

The invention relates to the field of dust removal, in particular to a single power supply combined dust removal device and method.

Background technique

In various industrial facilities, such as thermal power plants, waste incineration power plants, chemical plants, steel plants, etc., there are smoke and dust emission problems. Industrial dust has the characteristics of concentrated sources, large emissions, and continuous emissions. It is difficult to pass through the atmosphere. The self-purification effect realizes rapid purification, and artificial dust removal measures are required.

In recent years, research on sonic agglomeration has developed rapidly. Some scholars have tried to apply sonic agglomeration technology to the design of dust removal devices to solve the problem of dust pollution; further, some scholars are trying to couple sonic agglomeration technology with other methods, such as Coupling acoustic agglomeration with spray, static electricity, etc., to study the dust removal effect and energy consumption of coupling technology, etc.

Many studies have shown that sonic agglomeration can effectively reduce dust emissions, and the energy consumption can be further reduced by combining sonic agglomeration and spraying. If the electrostatic field is also applied to the dust removal, the dust removal effect can be greatly improved. In addition, if all components of the dust removal system are powered by one power supply, compared with multiple power supplies, the power loss of the internal resistance of the power supply is smaller, thereby effectively reducing the energy consumption of the combined dust removal. Based on the above analysis, the combination of sound waves, spray and static electricity, and the use of a single power supply may be able to achieve high efficiency and low energy consumption for dust removal at the same time. Yet, the invention of combined dust removal is less at present, and the device that uses a power source to supply power to the whole system is very scarce. Therefore, it is necessary to design a single power supply combined dust removal device to achieve high efficiency and low energy consumption of dust removal.

Judging from the existing technologies, some technologies use both spray and sound waves for flue gas dust removal, but the dust removal effect and energy consumption of these technologies have not been quantitatively characterized, and it is easy to cause dust pollution. Some existing technologies use the combination of acoustic agglomeration and spraying to pretreat fine particles in the dusty airflow such as smoke exhaust from coal-fired power plants, which greatly improves the efficiency of acoustic agglomeration of fine particles. Combined with subsequent traditional dust collectors, PM2 can be efficiently removed .5, so as to control the emission of PM2.5, but this technology lacks the structure of measuring the dust removal effect and energy consumption, and the dust used in this technology is drawn out by the fan, which is easy to cause dust pollution; some technologies use sonic agglomeration plus spray The method makes the dust particles agglomerate and reduces the dust concentration to prevent dust explosion, but it does not adopt a single power supply structure, which may lead to a large loss of energy consumption.

Contents of the invention

The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a device and method for combined dust removal with a single power supply, to solve the lack of the prior art in this respect, and to achieve high efficiency and low energy consumption of dust removal .

In order to solve the technical problem, the solution of the present invention is to provide a single power supply combined dust removal device, which includes a dust removal chamber main body, a sound source horn, a dust generator, an air compressor, a sprayer, a dust collection plate, a corona line, laser transmitter, receiving target, laser power meter, signal generator, power amplifier and high voltage DC power supply;

There is a small hole on the side of the main body of the dust removal room, and a sound source speaker is placed on the top of the main body of the dust removal room, and the sound source speaker is connected to a high-voltage DC power supply;

The dust generator includes a dust tank, a pump air port, a dust nozzle and a pressure valve; the dust tank is used to store the dust to be generated, and has a dust nozzle on it; the pump gas port is connected to the air compressor through a pipeline; the dust nozzle is connected to the dust removal chamber The small holes on the side of the main body are connected by pipes;

The sprayer is connected to a high-voltage DC power supply for spraying atomized droplets from the bottom of the dust removal chamber; the dust collecting plate and the corona wire are fixed in the main body of the dust removal chamber and are respectively connected to the high-voltage DC power supply; the corona wire is used for Corona discharge is generated, and the dust collection plate is used to collect charged dust;

The laser transmitter emits transmitted laser light to the main body of the dust removal room, which is absorbed by the receiving target; the receiving target is connected to a laser power meter, and the laser power meter displays the number according to the laser intensity on the receiving target, and is used to measure the dust removal rate inside the main body of the dust removal room. Effect: the high-voltage DC power supply supplies power to the three circuits of sound wave reunion, spraying and electrostatic dust removal at the same time.

Further, the dust generator has a pressure valve; the pressure valve is used to adjust the internal pressure of the dust generator.

Further, the base of the dust removal chamber is detachably connected to the bottom of the main body of the dust removal chamber.

Further, the sound source speaker is connected to a high-voltage DC power supply through a power amplifier and a signal generator.

Further, the device also includes a transformer, an inverter, an ammeter and a voltmeter; the input voltage of the three circuits is adjusted through the transformer and the inverter, and the power of the three circuits is measured through the ammeter and the voltmeter.

Further, the model of the high-voltage DC power supply is a high-voltage power supply XRN, the output voltage is 10-70kV, and the power is 10-100W. The inverter model is W-2000 vehicle-mounted inverter, the input voltage is 12V, the output voltage is 220V, and the inverter efficiency is 90%.

Further, the model of the dust generator is Huifen 7991 enhanced type, and the adjustment range of the pressure valve is 0.1-1.5MPa.

The present invention also provides a method for dust removal using the device, comprising the following steps:

Step (1): Turn on the laser transmitter, adjust the placement of the laser transmitter and the receiving target, so that the laser emitted by the laser transmitter can pass through the center point of the main body of the dust removal room and project on the receiving target; turn on the laser power meter, Read the indication of the laser power meter;

Step (2): The relationship between the light transmittance of the main body of the dust removal chamber and the number of laser power meters is expressed by the following formula:

In the formula, f is the real-time reading of the laser power meter, and _f0 is the initial reading of the laser power meter.

Step (3): Turn on the high-voltage DC power supply, the transformer and the inverter, and adjust the voltage of the high-voltage DC power supply according to the experimental needs.

Step (4): Turn on the air compressor and pump compressed air into the dust generator; keep the nozzle valve of the dust generator closed, and adjust the pressure of the pressure valve to an appropriate value.

Step (5): Remove the base of the dust removal chamber, place the main body of the dust removal chamber above the sprayer, and let the sprayer spray water mist from the bottom to the main body of the dust removal chamber; keep the spray flow rate of the sprayer constant, and control the spraying time according to the experimental needs. The circuit ammeter and voltmeter of the sprayer are displayed, then the sprayer is turned off, and the base of the dust removal chamber is covered.

Step (6): After the water mist in the main body of the dust removal chamber no longer settles naturally, open the nozzle valve of the dust generator to allow the dust to enter the dust removal chamber from the nozzle of the dust generator, control the spray time according to the experimental needs, and then close the nozzle valve .

Step (7): Turn on the signal amplifier and the power amplifier, and control the sound frequency and sound pressure level according to the needs of the experiment.

Step (8): After the dust in the dust removal chamber no longer settles naturally, turn on the sound source speaker and energize the corona wire, and control the action time of sound waves and static electricity according to the experimental needs; during the settlement process, use the camera to record the dust in the dust removal chamber According to the pollution situation and the change of the reading of the laser power meter, the change curve of the light transmittance of the dust removal room is calculated to characterize the dust removal effect; the power of the circuit is measured by reading the ammeter and the voltage indication, and the sum of the power of the three circuits is used as the combined dust removal of the single power supply. total energy consumption.

The beneficial effects of the present invention are: a single power supply combined dust removal device provided by the present invention uses one power supply to supply power to the three circuits of acoustic agglomeration, spraying and electrostatic dust removal, which reduces the power loss of the internal resistance of the power supply and reduces the The unnecessary energy consumption of the dust removal system has a dust generator that can continuously and stably generate smoke and dust, and can quantitatively control variables such as the voltage of the power supply, water mist concentration, sound frequency and sound pressure level, and measure the dust removal effect of the device through the light transmittance. The power of the dust removal system is measured by the ammeter and voltmeter on each channel, which realizes the high efficiency, low energy consumption and indicator visualization of the combined dust removal.

The combined dust removal device of the present invention sprays dust in a closed environment, and the settled dust is collected through the base, which greatly reduces dust pollution.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of a combined dust removal device powered by a single power supply;

In the figure, 1. Main body of dust removal room, 2. Sound source horn, 3. Dust generator, 4. Air compressor, 5. Sprayer, 6. Dust collecting plate, 7. Corona wire, 8. Laser emitter, 9 . Receiving target, 10. Laser power meter, 11. Signal generator, 12. Power amplifier, 13. High voltage DC power supply, 14. Transformer, 15. Inverter, 16. Ammeter, 17. Voltmeter.

detailed description

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a single power supply combined dust removal device includes a dust removal chamber main body 1, a sound source speaker 2, a dust generator 3, an air compressor 4, a sprayer 5, a dust collection plate 6, a corona wire 7, Laser transmitter 8, receiving target 9, laser power meter 10, signal generator 11, power amplifier 12, high voltage DC power supply 13, transformer 14, inverter 15, ammeter 16 and voltmeter 17.

The main body 1 of the dust removal room is a cylinder with an inner diameter of 120 mm and a height of 220 mm. There is a small hole with a diameter of 24 mm on the side. The small hole is connected to the dust generator through a hose; the sound source speaker 2 is placed on the top of the dust removal room main body , the sound source speaker 2 is connected to the power amplifier and the signal generator; the base of the dust removal chamber 3 is detachable so that the sprayer 5 can spray water mist from the bottom.

In order to reduce unnecessary energy consumption of the dust removal system, a single power supply is used to power the entire dust removal system. In order to accurately measure the energy consumption of the dust removal system, an ammeter 16 and a voltmeter 17 are used to measure the electric power of the three circuits. The output voltage of the high-voltage DC power supply 13 is 10-70kV, and the power is 10-100W, which is connected with the dust collecting plate 6, the corona wire 7, the ammeter 16 and the voltmeter 17, and is used as the power supply of the electrostatic precipitator and measures the circuit power; the transformer 14 And the inverter 15 is connected with the high-voltage DC power supply 13, and is used to convert the high-voltage DC current into 220V, 50Hz alternating current; the output terminal of the inverter 15 and the signal generator 11, the power amplifier 12, the sound source speaker 2, The ammeter 16 is connected with the voltmeter 17 as the power source of the acoustic wave reunion and measures the power; the output terminal of the inverter 15 is connected with the sprayer 5, the ammeter 16 and the voltmeter 17 as the power source of the spray dust removal and measures the power.

The model of dust generator 3 is Huifen 7991 enhanced dust aerosol generator, including dust tank, pump air port, dust nozzle and pressure valve; the dust tank is used to store the dust to be generated, and the particle size of the dust is 0.1-150 μm; the air The compressor 4 pumps compressed air into the dust generator 3 through the pipeline, so that the dust generator 3 sprays dust to the main body 1 of the dust removal room; the pump air port is connected with the air compressor 4 through a pipeline; The small holes of the dust collector are connected by pipes to spray dust into the main body of the dust removal chamber 1; the pressure valve can adjust the internal pressure of the dust generator 3 to control the concentration of dust. The adjustment range of the pressure valve is 0.1-1.5MPa.

The dust collecting plate 6 is two 90×150mm stainless steel plates placed in parallel, which are fixed in the main body 1 of the dust removal chamber. The corona pole frame suspenders are formed into a row and fixed in the main body of the dust removal room. The corona wire 7 and the dust collecting plate 6 are respectively connected to the two poles of the high-voltage DC power supply 13 to generate corona discharge, thereby An electrostatic field sufficient to ionize the dust-containing gas is formed between the wire 7 and the dust collecting plate 6, and the dust is charged. Under the action of the electric field, the dust collecting plate 6 moves and is collected.

In order to measure the combined dust removal effect of spray, sound wave and static electricity and realize the data visualization of the dust removal effect, a laser power meter 10 is used to measure the light transmittance inside the main body of the dust removal room. 9 absorption; the receiving target 9 is connected to a laser power meter 10, and the laser power meter 10 displays an indication according to the laser intensity on the receiving target 9, and is used to calculate the light transmittance inside the main body of the dust removal chamber.

The present invention further provides a method for dust removal using the aforementioned device, comprising the following steps:

During use, turn on the laser emitter 8, adjust the placement position of the laser emitter 8 and the receiving target 9, so that the laser light emitted by the laser emitter 8 can pass through the center point of the dust removal chamber main body 1, and project on the receiving target 9; The laser power meter 10 reads the indication of the laser power meter 10 .

During use, the relationship between the light transmittance of the dust removal chamber main body 1 and the indications of the laser power meter 10 is represented by the following formula:

In the formula, f is the real-time reading of the laser power meter 10, and _f0 is the initial reading of the laser power meter 10.

When in use, turn on the high voltage direct current power supply 13, the transformer 14 and the inverter 15, and adjust the voltage of the high voltage direct current power supply according to the experimental needs, and the adjustment range is between 10-70kV.

When in use, turn on the air compressor 4, and pump compressed air into the dust generator 3 through the pipeline; keep the nozzle valve of the dust generator 3 closed, and adjust the pressure of the pressure valve to an appropriate value, and the adjustment range is 0.1-1.5MPa between.

When in use, remove the dust removal chamber base 3, place the dust removal chamber main body 1 above the sprayer 5, connect the spray circuit, turn on the sprayer 5, and make the sprayer 5 spray water mist from the bottom to the dust removal chamber main body 1; keep the spray flow rate of the sprayer 5 No change, control the spraying time according to the needs of the experiment, and the time range is 10-60s. During this period, read the readings of the spraying circuit ammeter and inverter voltmeter, and then close the sprayer 5 and cover the base 3 of the dust removal chamber.

When in use, after the water mist inside the main body 1 of the dust removal chamber no longer settles naturally, open the nozzle valve of the dust generator 3, so that the dust enters the main body 1 of the dust removal chamber from the nozzle of the dust generator 3, and control the dust injection according to the experimental needs. Time, the time range is 20 ~ 40s, then close the spout valve.

When in use, the signal generator 11 and the power amplifier 12 are turned on, and the audio frequency and sound pressure level are controlled according to experimental needs. The audio frequency adjustment range is 1300-2200dB, and the sound pressure level adjustment range is 130-150Hz.

When in use, after the dust in the main body 1 of the dust removal chamber no longer settles naturally, connect the sound wave reunion circuit and the electrostatic dust removal circuit, and turn on the sound source speaker 2, so that the dust will settle to the base of the dust removal chamber under the triple action of spray, sound wave and static electricity 3. Control the action time of the sound wave according to the needs of the experiment, and the adjustment range is 20 to 60 s; during the settlement process, read the readings of the ammeter 16 and the voltmeter 17 to calculate the circuit power, the power of the spray circuit, the electrostatic precipitator circuit and the sonic reunion circuit The sum is the total energy consumption of the dust removal system. The camera is used to record the changes in the readings of the laser power meter 10, and the change curve of the light transmittance of the dust removal room is calculated by the aforementioned formula to reflect the dust removal effect.

The aforementioned embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the disclosure of the present invention should be considered as protection of the present invention. scope.

Claims (8)

1. A single power supply combined dedusting device, characterized in that: the device comprises a dedusting chamber main body (1), a sound source horn (2), a dust generator (3), an air compressor (4), a sprayer (5) ), dust collection plate (6), corona wire (7), laser transmitter (8), receiving target (9), laser power meter (10), signal generator (11), power amplifier (12) and high voltage DC power supply (13); There are small holes on the side of the main body (1) of the dust removal chamber, and a sound source horn (2) is placed on the top of the dust removal chamber main body (1), and the sound source horn (2) is connected to a high-voltage DC power supply (13); The dust generator (3) includes a dust tank, a pump air port, a dust nozzle and a pressure valve; the dust tank is used to store the dust to be generated, and has a dust nozzle on it; the pump gas port is connected to the air compressor (4) through a pipeline ; The dust spout is connected with the small hole on the side of the main body (1) of the dust removal chamber through a pipeline; The sprayer (5) is connected with a high-voltage direct current power supply (13), and is used to spray atomized liquid droplets from the bottom of the dust removal chamber; the dust collection plate (6) and the corona wire (7) are fixed on the dust removal chamber main body (1 ), are respectively connected with the high-voltage DC power supply (13); the corona wire (7) is used to generate corona discharge, and the dust collecting plate (6) is used to collect charged dust; The laser transmitter (8) transmits the transmitted laser light to the main body of the dust removal room, which is absorbed by the receiving target (9); the receiving target (9) is connected to the laser power meter (10), and the laser power meter (10) ) on the laser intensity display for measuring the dust removal effect inside the dust removal chamber main body (1); the high-voltage DC power supply (13) simultaneously supplies power for the three circuits of acoustic agglomeration, spraying and electrostatic dust removal. 2. The single power supply combined dust removal device according to claim 1, characterized in that: the dust generator (3) has a pressure valve; the pressure valve is used to adjust the internal pressure of the dust generator (3). 3. The combined dust removal device powered by a single power supply according to claim 1, characterized in that: the base of the dust removal chamber is detachably connected to the bottom of the dust removal chamber main body (1). 4. The device for combined dust removal with single power supply according to claim 1, characterized in that: the sound source speaker (2) is connected to a high-voltage DC power supply (13) through a power amplifier (12) and a signal generator (11) . 5. The device of single power supply combined dust removal according to claim 1, characterized in that: the device also includes a transformer (14), an inverter (15), an ammeter (16) and a voltmeter (17); (14) and the inverter (15) regulate the input voltages of the three circuits, and measure the power of the three circuits by the ammeter (16) and the voltmeter (17). 6. The single power supply combined dust removal device according to claim 5, characterized in that: the model of the high-voltage DC power supply is a high-voltage power supply XRN, the output voltage is 10-70kV, and the power is 10-100W; the inverter The inverter model is W-2000 vehicle inverter, the input voltage is 12V, the output voltage is 220V, and the inverter efficiency is 90%. 7. The single power supply combined dust removal device according to claim 1, characterized in that: the model of the dust generator (3) is Huifen 7991 enhanced type, and the adjustment range of the pressure valve is 0.1-1.5 MPa. 8. A method for dust removal utilizing the device according to claim 1, comprising the following steps: Step (1): Turn on the laser emitter (8), adjust the placement of the laser emitter (8) and the receiving target (9), so that the laser emitted by the laser emitter (8) can pass through the main body (1) of the dust removal chamber The central point is projected onto the receiving target (9); the laser power meter (10) is turned on, and the indication of the laser power meter (10) is read; Step (2): The relationship between the light transmittance of the dust removal chamber main body (1) and the indication of the laser power meter (10) is expressed by the following formula:

In the formula, _f is the real-time reading of the laser power meter (10), and f is the initial reading of the laser power meter (10); Step (3): Turn on the high-voltage DC power supply (13), the transformer (14) and the inverter (15), and adjust the voltage of the high-voltage DC power supply according to the needs of the experiment; Step (4): Turn on the air compressor (4), pump compressed air into the dust generator (3); keep the nozzle valve of the dust generator (3) closed, and adjust the pressure of the pressure valve to an appropriate value; Step (5): Remove the base of the dust removal chamber, place the main body of the dust removal chamber (1) above the sprayer (5), and make the sprayer spray water mist from the bottom to the main body of the dust removal chamber; keep the spray flow rate of the sprayer (5) constant, according to The experiment needs to control the spraying time, during which the readings of the circuit ammeter and voltmeter of the sprayer (5) are read, then the sprayer (5) is closed, and the base of the dust removal chamber is covered; Step (6): After the water mist in the main body (1) of the dust removal chamber no longer settles naturally, open the nozzle valve of the dust generator (3) to allow the dust to enter the dust removal chamber from the nozzle of the dust generator (3). Need to control the spray time and then close the nozzle valve; Step (7): Turn on the signal generator (11) and the power amplifier (12), and control the size of the sound frequency and sound pressure level according to the needs of the experiment; Step (8): After the dust in the dust removal chamber no longer settles naturally, turn on the sound source horn (2) and energize the corona wire (7), and control the action time of sound waves and static electricity according to the needs of the experiment; during the settling process, use The camera records the smoke and dust pollution in the dust removal chamber and the reading changes of the laser power meter (10), and calculates the change curve of the light transmittance of the dust removal chamber to represent the dust removal effect; by reading the readings of the ammeter (16) and voltmeter (17) Measure the power of the circuit, and the sum of the power of the three circuits is the total energy consumption of the combined dust removal of the single power supply.

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