CN111715000B - Purification method for airflow with dust - Google Patents
Purification method for airflow with dust Download PDFInfo
- Publication number
- CN111715000B CN111715000B CN202010545303.7A CN202010545303A CN111715000B CN 111715000 B CN111715000 B CN 111715000B CN 202010545303 A CN202010545303 A CN 202010545303A CN 111715000 B CN111715000 B CN 111715000B
- Authority
- CN
- China
- Prior art keywords
- pipe
- air
- water
- dust
- closed container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention belongs to the field of air purification, and particularly relates to purification treatment of dust-carrying gas, and discloses a purification method for dust-carrying gas flow, which comprises the following steps of firstly, collecting and pressurizing air to be dust-carrying gas to form the dust-carrying gas flow; then, the air flow treated in the first step is subjected to spray humidification treatment, so that solid particles in the air flow are dissolved in water or are precipitated by increasing weight when meeting water; finally, the air flow treated in the second step is subjected to water-gas combination treatment, so that solid particles in the air flow are further dissolved in water, and the effect of purifying the air flow with dust simply, efficiently and in a grading manner is achieved.
Description
Technical Field
The invention belongs to the field of air purification, and particularly relates to a purification method for dust-carrying airflow.
Background
With the construction of beautiful home as a national strategy, dust control in environmental problems involves the physical health of each citizen, and becomes a focus of attention for daily life of common people. The construction industry is incorporated into one of the main air pollution control battlefields, and the dust emission problem is a control core element. Dust-carrying air discharge pollution of cement silos, mortar silos and the like on construction sites is a heavy disaster area. At present, the most dust control measures are often adopted to isolate polluted air or suggest a method for covering a pollution source, and the dust pollution control means are very effective. For the lack of air purification equipment carrying dust, especially when the dust is serious, the existing commercial dust removal equipment is too 'golden and expensive', and cannot be suitable for the effective operation of the on-site characteristics of the building industry.
Therefore, how to provide a simple and effective purification method for dust-carrying airflow has become a technical problem that the construction industry needs to further perfect and optimize.
Disclosure of Invention
The invention aims to invent a purification method for dust-carrying airflow, which is used for collecting and pressurizing air to be dust to form dust-carrying airflow; then, solid particles in the air flow are dissolved in water or are precipitated by adding weight when meeting water through spraying and humidifying the air flow; the air flow is subjected to water-gas combination treatment, so that solid particles in the air flow are further dissolved in water, and the effect of purifying the air flow with dust simply, efficiently and in a grading manner is achieved.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for cleaning a dust laden airstream comprising the steps of:
step one, collecting and pressurizing air to be dust to form dust-carrying airflow;
step two, spraying and humidifying the air flow treated in the step one, so that solid particles in the air flow are dissolved in water or are precipitated when the solid particles are added with water;
and thirdly, carrying out water-gas combination treatment on the air flow treated in the second step, so that solid particles in the air flow are further dissolved in water.
Preferably, in the above purification method for a dust-carrying air flow, the first step is to collect and boost the dust-carrying air through a fan booster bin to form the dust-carrying air flow, the fan booster bin comprises a bin body, a fan and a filter screen, a first air inlet is formed in the upper portion of one side of the bin body, a first air outlet is formed in the lower portion of the other side of the bin body, the fan is arranged in an air flow channel of the bin body, the air flow channel is communicated with a first air inlet and a first air outlet, the fan is arranged close to the first air inlet, the filter screen is arranged at the first air inlet, and the caliber of the first air outlet is smaller than that of the first air inlet.
Preferably, in the above purification method for airflow with dust, the second step is to perform spray humidification treatment on the airflow treated in the first step through a spray purification bin, where the spray purification bin includes a first closed container, a first inverted container and a plurality of pipes with spray heads, the top of the first closed container is provided with a second air inlet externally connected with a first pipeline, the lower part of the first closed container is used as a water collecting tank, the bottom of the water collecting tank is provided with a first wastewater discharge valve, the first inverted container is coaxially arranged in the first closed container, the top of the first inverted container is provided with a second air outlet, the bottom opening of the first inverted container is arranged, the airflow treated by a fan pressurization bin enters the inside of the first closed container through the second air inlet, flows into the first inverted container from the bottom opening of the first closed container after passing through a channel between the first closed container and the first inverted container, finally flows out through the second air outlet, and the inner wall of the first closed container and the inner wall and the outer wall of the first inverted container are respectively provided with the plurality of pipes with spray heads, and the water is pumped to the spray heads through the pressure pumps.
Preferably, in the above purification method for dust-laden air flow, the through-flow cross section of the first inverted container is greater than or equal to the through-flow cross section of the channel between the first closed container and the first inverted container, the distance between the bottom of the first inverted container and the highest allowable height line of the liquid surface of the first closed container is greater than or equal to the distance between the side wall of the first inverted container and the side wall of the first closed container, the distances between the outer wall of the first inverted container and the inner wall of the first closed container are equal, the cross sections of the first inverted container and the first closed container are circular, the upper part of the first inverted container is in a convex arc shape, and the cross section of the upper part of the first inverted container is gradually enlarged from top to bottom.
Preferably, in the above purification method for airflow with dust, a bell mouth-shaped filter screen is disposed in the first closed container, a small mouth end of the bell mouth-shaped filter screen is mounted at a bottom of the first closed container and surrounds an outer side of a water outlet at a bottom of the first closed container, a large mouth end of the bell mouth-shaped filter screen is mounted at an inner side of a side wall of the first closed container, the pressure pump is disposed at a lower side of the bell mouth-shaped filter screen, a plurality of high-pressure flushing nozzles for flushing the bell mouth-shaped filter screen are uniformly disposed on the side wall of the first closed container along the same horizontal height, and a direction of the high-pressure flushing nozzles can be adjusted.
Preferably, in the above purification method for airflow with dust, the third step is to perform water-gas combination treatment on the airflow treated in the second step, so that dust in the airflow is further dissolved in water, the water dedusting mixing bin comprises a second closed container provided with liquid and a first water-gas combiner, a second wastewater discharge valve is arranged at the bottom of the second closed container, an exhaust valve is arranged on the top of the second closed container, the first water-gas combiner is arranged in the second closed container, the first water-gas combiner comprises an air inlet pipe, a liquid inlet pipe, an air suction pipe, a water-gas mixing pipe and a diffusion pipe which are sequentially connected, the free end of the liquid inlet pipe is a liquid inlet, a liquid booster pump is arranged on the liquid inlet pipe, the free end of the diffusion pipe is a water-gas discharge port, one end of the air inlet pipe is connected to the side wall of the air suction pipe, and the other end of the air inlet pipe is connected with a second pipeline.
Preferably, in the above purification method for a dust-laden air stream, the first moisture combiner satisfies the following relationship:
q3= (1.25-1.5) ×v1/4×pi×d1×d1, and d2= (1.5-1.75) ×d1, d3= (1.118-1.225) ×d1, where Q3 is the flow rate of the gas in the first intake pipe, V1 is the flow rate of the liquid in the first intake pipe, d1 is the pipe diameter of the first intake pipe, d2 is the pipe diameter of the first liquid-gas mixing pipe, and d3 is the pipe diameter of the first intake pipe.
Preferably, in the above purification method for dust-carrying airflow, the pipe diameter of the air suction pipe gradually increases from the liquid inlet pipe to the water-air mixing pipe, the pipe wall of the air suction pipe is an arc surface protruding outwards, one end of the air suction pipe is connected to the arc surface of the air suction pipe, and the length of the air suction pipe is at least more than 0.75 times of the pipe diameter of the liquid inlet pipe.
Preferably, in the above purification method for dust-carrying airflow, the water-air mixing pipe is a linear pipe section, the length of the water-air mixing pipe is at least 7 times as long as the pipe diameter of the water-air mixing pipe, the pipe diameter of the water-air mixing pipe is 1-2 times as large as the pipe diameter of the liquid inlet pipe, the diffusion pipe is a trumpet-shaped pipe section, the pipe diameter of the diffusion pipe is gradually increased from inside to outside, the length of the diffusion pipe is 1-1.5 times as long as the pipe diameter of the water-air mixing pipe, the outward inclination angle of the pipe wall of the diffusion pipe is a, and tan (a) =1/7-1/5.
Preferably, in the above purification method for airflow with dust, a plurality of guide plates are further disposed in the second closed container, the lower surface of each guide plate is an arc plate, a plurality of arc grooves are disposed on each arc plate at equal intervals, the depth of each arc groove is smaller than the width of each arc groove, and the width of each arc groove is smaller than the distance between every two adjacent arc grooves.
Compared with the prior art, the technical scheme disclosed by the invention has the following beneficial effects:
the invention provides a purification method for dust-carrying airflow, which comprises the following steps of firstly, collecting and pressurizing air to be dust-carrying airflow; then, the air flow treated in the first step is subjected to spray humidification treatment, so that solid particles in the air flow are dissolved in water or are precipitated by increasing weight when meeting water; finally, the air flow treated in the second step is subjected to water-gas combination treatment, so that solid particles in the air flow are further dissolved in water, and the effect of purifying the air flow with dust simply, efficiently and in a grading manner is achieved.
Drawings
Fig. 1 is a schematic connection diagram of a blower booster bin, a spray purification bin and a water dedusting mixing bin in an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a fan booster bin according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a spray purifying cartridge according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a water dedusting mixing chamber according to an embodiment of the invention.
Fig. 5 is a schematic structural view of a first water vapor combiner according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a baffle according to an embodiment of the present invention.
In the figure: 1-fan booster bin, 11-bin body, 111-first air inlet, 112-first air outlet, 12-fan, 13-filter screen, 2-spraying purification bin, 21-first airtight container, 211-second air inlet, 22-first inversion container, 221-second air outlet, 23-spray head, 24-first waste water discharge valve, 3-water dedusting mixing bin, 31-second airtight container, 32-first water-gas combiner, 321-liquid inlet pipe, 322-air suction pipe, 323-water-gas mixing pipe, 324-diffusion pipe, 325-air inlet pipe, 33-second waste water discharge valve, 34-liquid booster pump, 35-filter screen, 36-deflector, 361-arc groove, 37-exhaust valve, 38-first liquid injection pipe, 4-first pipeline and 5-second pipeline.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. The technical contents and features of the present invention will be described in detail below with reference to the attached drawings by way of the illustrated embodiments. It should be further noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. For convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the drawings, but this should not be construed as a limitation of the technical scheme of the present invention.
Referring to fig. 1 to 6, the present embodiment discloses a purifying method for dust-laden air flow, comprising the following steps:
step one, collecting and pressurizing air to be dust to form dust-carrying airflow;
step two, spraying and humidifying the air flow treated in the step one, so that solid particles in the air flow are dissolved in water or are precipitated when the solid particles are added with water;
and thirdly, carrying out water-gas combination treatment on the air flow treated in the second step, so that solid particles in the air flow are further dissolved in water.
The invention provides a purification method for dust-carrying airflow, which comprises the following steps: step one, collecting and pressurizing air to be dust to form dust-carrying airflow; then, the air flow treated in the first step is subjected to spray humidification treatment, so that solid particles in the air flow are dissolved in water or are precipitated by increasing weight when meeting water; finally, the air flow treated in the second step is subjected to water-gas combination treatment, so that solid particles in the air flow are further dissolved in water, and the effect of purifying the air flow with dust simply, efficiently and in a grading manner is achieved.
Preferably, in the above purification method for a dust-carrying air flow, the first step is to collect and boost the dust-carrying air by the fan booster bin 1 to form the dust-carrying air flow, the fan booster bin 1 includes a bin body 11, a fan 12 and a filter screen 13, a first air inlet 111 is provided at an upper portion of one side of the bin body 11, a first air outlet 112 is provided at a lower portion of the other side of the bin body 11, the fan 12 is disposed in an air flow channel of the bin body 11, the air flow channel is communicated with the first air inlet 111 and the first air outlet 112, the fan 12 is disposed close to the first air inlet 111, the filter screen 13 is disposed at the first air inlet 111, and a caliber of the first air outlet 112 is smaller than a caliber of the first air inlet 111.
Preferably, in the above purification method for airflow with dust, the step two is performed with spray humidification treatment on the airflow processed in the step one by the spray purification bin 2, the spray purification bin 2 includes a first closed container 21, a first inverted container 22 and a plurality of pipes with spray heads 23, the top of the first closed container 21 is provided with a second air inlet 211 externally connected with a first pipeline 4, the lower part of the first closed container 21 is used as a water collecting tank, the bottom of the water collecting tank is provided with a first wastewater discharge valve 24, the first inverted container 22 is coaxially arranged in the first closed container 21, the top of the first inverted container 22 is provided with a second air outlet 221, the bottom opening of the first inverted container 22 is provided with a second air inlet 211, the air processed by the fan pressurization bin 1 enters the first closed container 21 through the second air inlet 211, flows into the first inverted container 22 from the bottom opening of the first inverted container 22 after passing through a channel between the first closed container 21 and the first inverted container 22, finally flows out through the second air outlet 221, and the first inverted container 22 and the water pump with spray heads 23 are respectively arranged on the inner wall of the first closed container 21 and the first inverted container 22. The invention coaxially arranges the first inverted container 22 with an inverted U-shaped structure in the first closed container 21, a channel between the first closed container 21 and the first inverted container 22 is used as a primary expansion spray chamber, the inner space of the first inverted container 12 is a secondary expansion spray chamber, under the condition of realizing the same expansion spray space, the whole structure of the spray purification bin 2 is more compact, the required occupied area is smaller, the speed reduction efficiency is higher, the spray purification bin 2 with the structure mainly aims at solid particles with the particle size of 2.5-10 mu m, 30 percent of total solid particles can be reduced, the spray head 23 is used for humidifying the dust-bearing air, and the solid particles with the particle size of 2.5-10 mu m in the dust-bearing air are precipitated or dissolved in water when meeting water, thereby achieving the purpose of purifying the air
In order to make the flow of the dusty air smoother, it is preferable that the through-flow cross section of the first inverted container 22 is equal to or larger than the through-flow cross section of the passage between the first closed container 21 and the first inverted container 22. The distance between the vertical central axis of the first inverted container and the side wall of the first inverted container is 0.71-0.8 of the distance between the vertical central axis of the first inverted container 22 and the side wall of the first closed container 21, and the distance between the bottom of the first inverted container 22 and the highest allowable height line of the liquid level in the first closed container 21 is greater than or equal to the distance between the side wall of the first inverted container 22 and the side wall of the first closed container 21. The gas to be treated enters the first airtight container 21 through the second gas inlet 211 and moves downwards along the channel passing through the space between the first airtight container 21 and the first inverted container 22, then flows into the first inverted container 22 from the bottom opening of the first inverted container 22, the first inverted container 22 with an inverted U-shaped structure is coaxially arranged in the first airtight container 21, the channel between the first airtight container 21 and the first inverted container 22 is used as a primary expansion spray chamber, the inner space of the first inverted container 12 is a secondary expansion spray chamber, under the condition of realizing the same expansion spray space, the integral structure of the spray purification bin 2 is more compact, the required occupied area is smaller, the speed reduction efficiency is higher, and the spray purification bin 2 with the structure can reduce 30% of total solid particles mainly aiming at the solid particles with the particle size of 2.5-10 mu m, and the spray head 23 is used for humidifying the dust-carrying air, so that the solid particles with the particle size of 2.5-10 mu m in the dust air are increased in weight or dissolved in the dust-carrying water, and the aim of purifying the dust is achieved. .
Preferably, the distance from the outer wall of the first inverted container 22 to the inner wall of the first closed container 21 is equal, the upper portion of the first inverted container 22 is in a convex arc shape, and the cross section of the upper portion of the first inverted container 22 is gradually enlarged from top to bottom. Streamlining is an external shape of an object, typically exhibiting a smooth and regular surface, without large undulations and sharp corners. The fluid is mainly laminar on the surface of the streamlined body, and no or little turbulence is generated, which ensures that the body is subjected to less resistance.
Preferably, a water injection pipe (not shown) is disposed on a side wall of the first closed container 21, the water injection pipe is located above a highest allowable height line of the liquid level of the first closed container 21, a first overflow pipe (not shown) is externally connected to the side wall of the first closed container 21 corresponding to the highest allowable height line of the liquid level of the first closed container 21, and a first check valve is disposed on the first overflow pipe.
Preferably, a bell mouth-shaped filter screen is disposed in the first closed container 21, a small mouth end of the bell mouth-shaped filter screen 27 is mounted at the bottom of the first closed container 21 and surrounds the outside of a water outlet at the bottom of the first closed container 21, a large mouth end of the bell mouth-shaped filter screen 27 is mounted at the inner side of a side wall of the first closed container 21, and the pressure pump 26 is disposed at the lower side of the bell mouth-shaped filter screen 27. Through setting up horn mouth type filter screen 27 as above, divide into two with the space of catch basin, one is located horn mouth type filter screen 27's upside, and one is located horn mouth type filter screen 27's downside, pressure pump 26 sets up in horn mouth type filter screen 27's downside, can be to purifying the spraying water source, avoids introducing new impurity to the area treatment gas.
Preferably, a plurality of high-pressure flushing nozzles 28 for flushing the bell mouth-shaped filter screen are uniformly arranged on the side wall of the first closed container 21 along the same horizontal height, and the direction of the high-pressure flushing nozzles 28 can be adjusted, that is, the angle of an included angle alpha between the axis (spraying direction) of the high-pressure flushing nozzles and the side wall of the first closed container 21 can be adjusted. By providing the high-pressure flushing nozzle 28, no dead angle flushing can be performed on the bell mouth-shaped filter screen 27, and cleaning of the flushing bell mouth-shaped filter screen 27 is ensured. The high pressure rinse spray head 28 may also function as a water injection pipe.
Preferably, in the above purification method for a dust-carrying airflow, in the third step, the airflow treated in the second step is subjected to water-air combination treatment, so that dust in the airflow is further dissolved in water, the water dedusting mixing bin 3 includes a second closed container 31 provided with liquid (in this embodiment, the liquid adopts water) and a first water-air combiner 32, a second waste water discharge valve 33 is provided at the bottom of the second closed container 31, an exhaust valve 37 is provided at the top of the second closed container 31, the first water-air combiner 32 is disposed in the second closed container 31, the first water-air combiner 32 includes an air inlet pipe 325, a liquid inlet pipe 321, an air suction pipe 322, a water-air mixing pipe 323 and a diffusion pipe 324 which are sequentially connected, a filter screen 35 is disposed at the outer side of the liquid inlet pipe 321 for filtering the liquid entering the first water-air combiner 32, a liquid booster pump 34 is provided on the liquid inlet pipe 321, a water-air discharge port is provided at the free end of the diffusion pipe 324, and one end of the air inlet pipe 325 is connected to the air inlet pipe 325, and the other end of the air inlet pipe 325 is connected to the air inlet pipe 5. The water dedusting mixing bin 3 with the structure can reduce 10% of total solid particles mainly aiming at the solid particles with the particle size smaller than 2.5 mu m, so that dust-carrying airflow and liquid are fully mixed in the first water-gas connector 32, water is adopted for the liquid in the embodiment, the solid particles with the particle size smaller than 2.5 mu m in the air, namely PM2.5 grade tiny particles, are fully fused with water through the first water-gas connector 32, and the PM2.5 grade dust and water-soluble harmful substances in the air are further reduced by utilizing the characteristic that dust and water-soluble harmful substances are dissolved in water, so that dust pollution can be reduced, and original water-soluble harmful substances in the air can be purified.
Preferably, a first liquid injection pipe 38 is disposed on a side wall of the second closed container 31, the first liquid injection pipe 38 is located above a highest allowable height line of the liquid level of the second closed container 31, a second overflow pipe (not shown) is externally connected to the side wall of the second closed container 31 at a position corresponding to the highest allowable height line of the liquid level of the second closed container 31, and a second check valve is disposed on the second overflow pipe.
In order to make the dust-carrying gas flow and water more fully fused, so as to effectively reduce PM2.5 dust and water-soluble harmful substances in the gas, preferably, in the above purification method for dust-carrying gas flow, the first water-gas combiner 32 satisfies the following relationship:
q3= (1.25-1.5) ×v1/4×pi×d1×d1, and d2= (1.5-1.75) ×d1, d3= (1.118-1.225) ×d1, where Q3 is the flow rate of the gas in the first intake pipe 325, V1 is the flow rate of the liquid in the first intake pipe 321, V1 may have a value of 4 m/s-5 m/s, d1 is the pipe diameter of the first intake pipe 321, d2 is the pipe diameter of the first liquid-gas mixing pipe 323, and d3 is the pipe diameter of the first intake pipe 325.
Preferably, in the above purifying method for dust-laden air flow, the pipe diameter of the air suction pipe 322 is gradually increased from the liquid inlet pipe 321 to the water-air mixing pipe 323, the pipe wall of the air suction pipe 322 is an arc surface protruding outwards, one end of the air inlet pipe 325 is connected to the arc surface of the air suction pipe 322, the lengths of the liquid inlet pipe 321, the air suction pipe 322, the water-air mixing pipe 323 and the diffusion pipe 324 are respectively L1 to L4, and the length L2 of the air suction pipe 322 is at least more than 0.75 times of the pipe diameter of the liquid inlet pipe 321, so that the air suction amount of the air suction pipe 322 is optimally matched with the pipe diameter and the flow velocity of the liquid inlet pipe 321, and the air suction amount efficiency is maximized.
Preferably, in the above-mentioned purification method for dust-laden air flow, the water-air mixing pipe 323 is a linear pipe section, the length L3 of the water-air mixing pipe 323 is at least 7 times as large as the pipe diameter d2 of the water-air mixing pipe 323, and the pipe diameter d2 of the water-air mixing pipe 323 is 1-2 times as large as the pipe diameter d1 of the liquid inlet pipe 321, so that the mixing degree of liquid and gas and the fluid kinetic energy loss can be optimally matched.
Preferably, in the above-mentioned purifying method for dust-laden air flow, the diffuser pipe 324 is a trumpet-shaped pipe section, the pipe diameter of the diffuser pipe 324 gradually increases from inside to outside, the length L4 of the diffuser pipe is 1 to 1.5 times the pipe diameter d1 of the water-air mixing pipe 323, the pipe wall of the diffuser pipe 324 has an outward inclination angle of a, and tan (a) =1/7-1/5, so that the water-air mixing gas discharge guiding and discharge amount can be optimally matched.
Preferably, in the above purifying method for airflow with dust, a plurality of guide plates 36 are further disposed in the second closed container 21, the lower surface of each guide plate 36 is an arc plate, a plurality of arc grooves 361 are disposed on each arc plate at equal intervals, the depth of each arc groove 361 is smaller than the width of each arc groove 361, and the width of each arc groove 361 is smaller than the distance between adjacent arc grooves 361.
In summary, according to the purification method for the dust-carrying airflow provided by the invention, the blower booster bin 1 is adopted to collect and boost the dust-carrying air to form the dust-carrying airflow; the dust-carrying airflow is sprayed by adopting the spray purification bin 2, so that solid particles with the particle size of 2.5-10 mu m in the airflow are dissolved in water or are precipitated when the weight of the solid particles is increased when meeting water, and the total solid particles can be reduced by 30%; the dust-carrying air flow is subjected to water-gas combination treatment by adopting the water dedusting mixing bin 3, so that solid particles with the particle size smaller than 2.5 mu m in the air flow are further dissolved in water, and the total solid particles can be reduced by 10%, thereby achieving the effects of simple, convenient, efficient and graded purification of the dust-carrying air flow.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (7)
1. A method for cleaning a dust laden air stream, comprising the steps of:
step one, collecting and pressurizing dust-carrying air to form dust-carrying air flow, wherein the step one collects and pressurizes the dust-carrying air to form dust-carrying air flow through a fan pressurizing bin, the fan pressurizing bin comprises a bin body, a fan and a filter screen, a first air inlet is formed in the upper part of one side of the bin body, a first air outlet is formed in the lower part of the other side of the bin body, the fan is arranged in an air flow channel of the bin body, the air flow channel is communicated with a first air inlet and a first air outlet, the fan is arranged close to the first air inlet, the filter screen is arranged at the first air inlet, and the caliber of the first air outlet is smaller than that of the first air inlet;
step two, carrying out spray humidification treatment on the air flow treated in the step one to enable solid particles in the air flow to be dissolved in water or to increase weight when meeting water to be precipitated, wherein the step two is used for carrying out spray humidification treatment on the air flow treated in the step one through a spray purification bin, the spray purification bin comprises a first closed container, a first inverted container and a plurality of pipelines with spray heads, the top of the first closed container is provided with a second air inlet externally connected with a first pipeline, the lower part of the first closed container is used as a water collecting tank, the bottom of the water collecting tank is provided with a first wastewater discharge valve, the first inverted container is coaxially arranged in the first closed container, the top of the first inverted container is provided with a second air outlet, the bottom opening of the first inverted container is provided with a fan, the air treated by the fan pressurization bin enters the first closed container through the second air inlet, flows into the first inverted container from the bottom opening of the first inverted container after passing through a channel between the first closed container and the first inverted container, finally flows out through the second air outlet, the inner wall of the first closed container and the first inverted container and the first pipeline are respectively provided with the spray heads;
and thirdly, carrying out water-gas combination treatment on the air flow treated in the second step to enable solid particles in the air flow to be further dissolved in water, carrying out water-gas combination treatment on the air flow treated in the second step by a water dust removal mixing bin, enabling dust in the air flow to be further dissolved in water, wherein the water dust removal mixing bin comprises a second closed container provided with liquid and a first water-gas combiner, a second wastewater discharge valve is arranged at the bottom of the second closed container, an exhaust valve is arranged at the top of the second closed container, the first water-gas combiner is arranged in the second closed container, the first water-gas combiner comprises an air inlet pipe, a liquid inlet pipe, an air suction pipe, a water-gas mixing pipe and a diffusion pipe, wherein the free end of the liquid inlet pipe is provided with a liquid booster pump, the free end of the diffusion pipe is provided with a discharge port, one end of the air inlet pipe is connected to the side wall of the air suction pipe, and the other end of the air inlet pipe is connected with a second pipeline.
2. The method according to claim 1, wherein the through-flow cross section of the first inverted container is equal to or larger than the through-flow cross section of the passage between the first closed container and the first inverted container, the distance from the bottom of the first inverted container to the highest allowable height line of the liquid surface of the first closed container is equal to or larger than the distance between the side wall of the first inverted container and the side wall of the first closed container, the distances from the outer wall of the first inverted container to the inner wall of the first closed container are equal, the cross sections of the first inverted container and the first closed container are circular, the upper part of the first inverted container is in the shape of an arc of a convex, and the cross section of the upper part of the first inverted container is gradually enlarged from top to bottom.
3. The method for purifying a dust-carrying airflow according to claim 1, wherein a bell mouth-shaped filter screen is arranged in the first closed container, a small mouth end of the bell mouth-shaped filter screen is arranged at the bottom of the first closed container and surrounds the outer side of a water outlet at the bottom of the first closed container, a large mouth end of the bell mouth-shaped filter screen is arranged at the inner side of a side wall of the first closed container, the pressure pump is arranged at the lower side of the bell mouth-shaped filter screen, a plurality of high-pressure flushing nozzles for flushing the bell mouth-shaped filter screen are uniformly arranged on the side wall of the first closed container along the same horizontal height, and the direction of the high-pressure flushing nozzles can be adjusted.
4. A cleaning method for a dust laden air stream as claimed in claim 1,
the first water-air combiner satisfies the following relationship:
q3= (1.25-1.5) ×v1/4×pi×d1×d1, and d2= (1.5-1.75) ×d1, d3= (1.118-1.225) ×d1, where Q3 is the flow rate of gas in the intake pipe, V1 is the flow rate of liquid in the intake pipe, d1 is the pipe diameter of the intake pipe, d2 is the pipe diameter of the liquid-gas mixing pipe, and d3 is the pipe diameter of the intake pipe.
5. The method for purifying a dust-laden air stream according to claim 1, wherein the pipe diameter of the air suction pipe gradually increases from the liquid inlet pipe to the water-air mixing pipe, the pipe wall of the air suction pipe is an arc surface protruding outwards, one end of the air suction pipe is connected to the arc surface of the air suction pipe, and the length of the air suction pipe is at least more than 0.75 times of the pipe diameter of the liquid inlet pipe.
6. The method for purifying a dust-laden air stream according to claim 1, wherein the water-air mixing pipe is a linear pipe section, the length of the water-air mixing pipe is at least 7 times as long as the pipe diameter of the water-air mixing pipe, the pipe diameter of the water-air mixing pipe is 1-2 times as large as the pipe diameter of the liquid inlet pipe, the diffusion pipe is a horn-shaped pipe section, the pipe diameter of the diffusion pipe is gradually increased from inside to outside, the length of the diffusion pipe is 1-1.5 times as long as the pipe diameter of the water-air mixing pipe, the pipe wall of the diffusion pipe is inclined outward by an angle a, and tan (a) =1/7-1/5.
7. The method for purifying a dust-laden air stream according to claim 1, wherein a plurality of guide plates are further arranged in the second closed container, the lower surfaces of the guide plates are arc plates, a plurality of arc grooves are formed in the arc plates at equal intervals, the depth of each arc groove is smaller than the width of each arc groove, and the width of each arc groove is smaller than the distance between every two adjacent arc grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010545303.7A CN111715000B (en) | 2020-06-16 | 2020-06-16 | Purification method for airflow with dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010545303.7A CN111715000B (en) | 2020-06-16 | 2020-06-16 | Purification method for airflow with dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111715000A CN111715000A (en) | 2020-09-29 |
| CN111715000B true CN111715000B (en) | 2023-08-08 |
Family
ID=72566788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010545303.7A Active CN111715000B (en) | 2020-06-16 | 2020-06-16 | Purification method for airflow with dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111715000B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103620A (en) * | 1994-10-07 | 1996-04-23 | Dainaka Seiki Kk | Dust collection treating device |
| RU59999U1 (en) * | 2006-08-25 | 2007-01-10 | Андрей Владимирович Перков | SELF-CLEANING FILTER |
| CN201776020U (en) * | 2010-07-28 | 2011-03-30 | 中国石油天然气股份有限公司 | Disassembly-free cleaning filter |
| CN102114375A (en) * | 2009-12-09 | 2011-07-06 | 有利创新科技有限公司 | Dust arrester and method for removing dust particles from air |
| KR20120013771A (en) * | 2010-08-06 | 2012-02-15 | 주식회사 포스코 | Wet-type dust collector having advanced purification performance |
| CN205252845U (en) * | 2015-12-15 | 2016-05-25 | 陆彩红 | Boiler tail gas processing apparatus |
| KR20160126703A (en) * | 2015-04-24 | 2016-11-02 | 주식회사 리드컴퍼니 | The device for deodorizing polluted air |
| CN206103574U (en) * | 2016-06-01 | 2017-04-19 | 中冶长天国际工程有限责任公司 | Water -bath deduster , lime slaking and dust collector |
| CN107952316A (en) * | 2016-10-17 | 2018-04-24 | 株式会社奥思伟 | Micronic dust remover without strainer |
| CN207493402U (en) * | 2017-11-21 | 2018-06-15 | 赵滨霞 | A kind of emission-control equipment |
| CN109331623A (en) * | 2018-06-05 | 2019-02-15 | 华北电力大学（保定） | A kind of smoke pollution of boiler object calcium method integration deep removal system based on preposition oxidation |
-
2020
- 2020-06-16 CN CN202010545303.7A patent/CN111715000B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103620A (en) * | 1994-10-07 | 1996-04-23 | Dainaka Seiki Kk | Dust collection treating device |
| RU59999U1 (en) * | 2006-08-25 | 2007-01-10 | Андрей Владимирович Перков | SELF-CLEANING FILTER |
| CN102114375A (en) * | 2009-12-09 | 2011-07-06 | 有利创新科技有限公司 | Dust arrester and method for removing dust particles from air |
| CN201776020U (en) * | 2010-07-28 | 2011-03-30 | 中国石油天然气股份有限公司 | Disassembly-free cleaning filter |
| KR20120013771A (en) * | 2010-08-06 | 2012-02-15 | 주식회사 포스코 | Wet-type dust collector having advanced purification performance |
| KR20160126703A (en) * | 2015-04-24 | 2016-11-02 | 주식회사 리드컴퍼니 | The device for deodorizing polluted air |
| CN205252845U (en) * | 2015-12-15 | 2016-05-25 | 陆彩红 | Boiler tail gas processing apparatus |
| CN206103574U (en) * | 2016-06-01 | 2017-04-19 | 中冶长天国际工程有限责任公司 | Water -bath deduster , lime slaking and dust collector |
| CN107952316A (en) * | 2016-10-17 | 2018-04-24 | 株式会社奥思伟 | Micronic dust remover without strainer |
| CN207493402U (en) * | 2017-11-21 | 2018-06-15 | 赵滨霞 | A kind of emission-control equipment |
| CN109331623A (en) * | 2018-06-05 | 2019-02-15 | 华北电力大学（保定） | A kind of smoke pollution of boiler object calcium method integration deep removal system based on preposition oxidation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111715000A (en) | 2020-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105233605B (en) | Boiler smoke dedusting and purifying device | |
| CN213395787U (en) | Vertical air purification device | |
| CN206730758U (en) | Negative pressure dust removing device | |
| CN205164393U (en) | Boiler flue gas dust -removal and purification device | |
| CN105698322A (en) | Multi-pipe jet flow type indoor air washer | |
| CN217829416U (en) | Dust device for constructional engineering construction | |
| CN111715003B (en) | Device for purifying air with dust | |
| CN111715000B (en) | Purification method for airflow with dust | |
| CN202962190U (en) | Welding dedusting and purifying device | |
| CN111715005B (en) | Device for purifying air with dust | |
| CN111715001B (en) | Method for purifying dust-carrying pressurized gas | |
| CN208553596U (en) | A kind of industrial fan dust-extraction unit | |
| CN110508435A (en) | A kind of comprehensive water curtain air particles processing equipment | |
| CN203264498U (en) | Air purifier | |
| CN111715002B (en) | Method for purifying dust-containing pressurized gas | |
| CN110159334B (en) | Tunnel working face dirty wind cyclic utilization device | |
| CN205115145U (en) | Efflux aerator is prevented blockking up by sewage house | |
| CN204006327U (en) | A kind of for PM2 in clean room .the device of 5 dust | |
| CN111715012B (en) | Method for purifying dust-carrying pressurized gas | |
| CN111714999B (en) | Spray purification device and method | |
| CN111714967B (en) | Gravity type precipitation device and method | |
| CN111715004B (en) | Method for purifying air with dust | |
| CN206028251U (en) | Low energy consumption wind leaching rooms | |
| CN111450653B (en) | Device for purifying dust-carrying pressure gas | |
| CN205505274U (en) | Indoor air cleaning ware of multitube efflux formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |