CN110624347A - Multi-stage water-spraying dust-removing, dewatering, demisting and purifying device and method - Google Patents

Multi-stage water-spraying dust-removing, dewatering, demisting and purifying device and method Download PDF

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Publication number
CN110624347A
CN110624347A CN201910782185.9A CN201910782185A CN110624347A CN 110624347 A CN110624347 A CN 110624347A CN 201910782185 A CN201910782185 A CN 201910782185A CN 110624347 A CN110624347 A CN 110624347A
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China
Prior art keywords
water
demisting
stage
dust
collecting tank
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CN201910782185.9A
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Chinese (zh)
Inventor
张勇
吉利萍
刘洋
郁烈
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SHANGHAI SUPERHIGH ENGINEERING PLASTIC Co Ltd
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SHANGHAI SUPERHIGH ENGINEERING PLASTIC Co Ltd
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Priority to CN201910782185.9A priority Critical patent/CN110624347A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/10Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

The invention discloses a multi-stage water spray dust removal, dehydration, demisting and purification device and a method, which comprises a mixing cylinder, a water mist inlet, a multi-stage water spray device assembly, a centrifugal dehydration device, a demisting and purification device, a fan and an exhaust chimney which are sequentially connected, wherein the multi-stage water spray device assembly is connected with a first water collecting tank, the bottoms of the centrifugal dehydration device and the demisting and purification device are respectively provided with a second water collecting tank and a third water collecting tank, and the second water collecting tank and the third water collecting tank are connected with a drain pipe. The purification method comprises the steps of installing equipment; introducing a water, gas and dust mixture: introducing the mixture of water, gas and dust into a mixing barrel through a fan; first-stage jet cleaning and purifying; two-stage centrifugal dehydration purification and three-stage demisting purification. The purification device and the purification method have the functions of dust removal, dehydration and demisting and dust-gas separation due to the combined action of the multi-stage water spray device, the centrifugal dehydration device and the demisting purification device, are durable and can be used repeatedly.

Description

Multi-stage water-spraying dust-removing, dewatering, demisting and purifying device and method
Technical Field
The invention relates to dust removal equipment in a wet environment, in particular to a multi-stage water spray dust removal and dehydration demisting purification device and method, and belongs to the technical field of environmental protection dust removal.
Background
The ecological civilization and beautiful China are built, the development-level energy environmental protection industry is improved, and the ecological environment quality is improved, so that the method is an important measure for cultivating and developing new kinetic energy and improving green competitiveness. National concerns about ecological environment and air quality continue to increase. Because the synthesis proportion of water, gas and dust in a wet environment is quite complex, the mixing system of an iron-making sintering plant of a large-pollution household in the metallurgical industry is the largest pollution source generation place of a ferrous metallurgy enterprise. Most importantly, dust pollution, especially dust generated by water and vapor co-generation is difficult to treat, and the problem to be solved urgently in the field of dust removal is also solved.
According to the improved sintering process, the water-containing dust mainly comes from a mixing system and is intensively reflected in a strong mixing process section and a secondary mixing process section of a mixer, and due to the fact that the strong mixing and the secondary mixing adopt a hot return process, preheated mineral materials (particularly stone ash) are directly caused to generate water, dust and air waves with one wave and one wave during operation of mixing a large amount of water, and the water, dust and air waves are sprayed outwards through the olive-shaped end side of the mixer, so that the surrounding environment of the whole unit is diffused by steam, and the visibility is extremely low; particularly, in autumn and winter, a large amount of water is accumulated on the ground and is frozen, so that great hidden danger is brought to safety production. The harsh environment also seriously affects the control of process parameters, and restricts the improvement of the yield and the quality of products. A large amount of steam and water corrode and pulverize brick walls of the mixing chamber, the service life of equipment is greatly shortened, and physical and psychological health of workers is also influenced.
The existing dust removal equipment used in a wet environment comprises three types, namely wet electric dust removal, a pulse bag dust remover and a plastic burning plate dust remover, wherein the corona electrode of the wet electric dust removal is adhered by moisture-containing dust gas, so that the discharge efficiency is unstable, and the particle emission fluctuation is easily too large to achieve the standard emission; the cloth bag dust removal is easy to adhere to moisture-containing dust gas to form a paste bag in a wet environment, so that the whole pulse type cloth bag dust remover fails to work, the normal operation of production is influenced, the original cloth bag needs to be replaced when the normal production is recovered, and the dust bonded by the cloth bag in the replacement process causes secondary pollution, so that the ecological environment is influenced; the plastic sintered plate dust remover has excellent performance and good control of discharge precision, but the manufacturing cost is high, so that users can not popularize the dust remover in a large area.
In view of this, scientific research personnel in the field of dust removal devotes to research and develop a purification device for performing cooperative purification treatment on a multistage water spray dust removal and dehydration demister so as to improve the cooperative treatment technology and the integrated process for removing water, gas and dust in a wet environment and greatly reduce the equipment investment cost.
Disclosure of Invention
The invention provides a multi-stage water-spraying dust-removing and dewatering demisting purification device and a method, wherein a multi-stage water-spraying device component is arranged in a pipeline, so that water, gas and dust are forced to be washed by a sprayed water mist column and fall to the bottom of the pipeline, a large amount of dust-containing water mist is gathered into water flow which falls into a water collecting tank, and the water flow flows into the pipeline under the influence of gravity and falls into a return belt for recycling; the gas and residual micro dust cleaned by the water mist column are beaten down on a diffusion type circumferential wall of the pipeline by a centrifugal blade of the pipeline centrifugal dehydration device, and dust water collected on the circumferential wall is collected and recycled; the gas after spray cleaning and dehydration directly enters a demisting and purifying device for full interception and final purification, so that the air pollution can be effectively treated, particularly the water, gas and dust pollution under the wet environment can be treated, and the problems in the prior art are solved.
The above object of the present invention is achieved by the following technical means: a multi-stage water-spraying dust-removing, dehydrating, demisting and purifying device comprises a mixing cylinder, a water-mist inlet, a multi-stage water-spraying device assembly, a centrifugal dehydrating device, a demisting and purifying device, a fan, an exhaust chimney and a drain pipe, wherein the upper port of the mixing cylinder is connected with the lower port of the water-mist inlet, the upper port of the water-mist inlet is connected with the multi-stage water-spraying device assembly, the multi-stage water-spraying device assembly comprises a plurality of stages of water-spraying devices, the bottom of each stage of water-spraying device is connected with a first water collecting tank, the first water collecting tank is connected with the drain pipe, the multi-stage water-spraying device assembly extends upwards in an inclined manner of 25-40 degrees and is connected with the centrifugal dehydrating device through an induced air pipeline, the centrifugal dehydrating device is connected with the demisting and purifying device through a; and the bottoms of the centrifugal dehydration device and the demisting purification device are respectively provided with a second water collecting tank and a third water collecting tank, and the second water collecting tank and the third water collecting tank are connected with a drain pipe.
Further, the length of each stage of water spray device is about 3 meters.
Furthermore, the water mist inlet is in a horn mouth shape, and one side of the wide mouth is connected with the mixing barrel.
Further, the centrifugal dehydration device and the demisting purification device are installed at a height of 15 meters above the ground.
The invention also discloses a multistage water-spraying dust-removing, dehydrating and demisting method, which comprises the following steps:
(1) equipment installation: a centrifugal dehydration device and a demisting purification device are installed at a high position 15 meters away from the ground, a mixing cylinder is arranged on the ground, a multi-stage water spray device assembly is connected between the mixing cylinder and the centrifugal dehydration device, the multi-stage water spray device assembly, the centrifugal dehydration device and the demisting purification device are respectively connected with a first water collecting tank, a second water collecting tank and a third water collecting tank, each water collecting tank is connected to a drain pipe, and the demisting purification device is connected with an exhaust chimney through a fan;
(2) introducing a water, gas and dust mixture: introducing the mixture of water, gas and dust into the mixing barrel through a fan;
(3) first-stage jet cleaning and purifying: connecting the mixing cylinder with a multi-stage water spray device assembly to enable the water, gas and dust mixture to be sprayed by the water spray device assembly, connecting a first water collecting tank at the bottom of the multi-stage water spray device assembly, and collecting the water, gas and dust mixture washed from the multi-stage water spray device assembly;
(4) secondary centrifugal dehydration purification: introducing the residual micro-dust purified by the multi-stage water spray device assembly into a centrifugal dehydration device, dropping the residual micro-dust on the diffusion-type circumferential wall of the pipeline through centrifugal blades of the centrifugal dehydration device, and converging the residual micro-dust into water flow which falls into a second water collecting tank to be collected and recycled;
(5) three-stage demisting and purifying: introducing the gas after spray cleaning and dehydration into a defogging and purifying device for full interception and final purification, and discharging.
The working principle of the invention is as follows: the centrifugal dehydration device and the demisting purification device are arranged at the height of 15 meters above the ground, the induced air pipeline is upwards connected with the centrifugal dehydration device, the inclination is 25-40 degrees, the multi-stage water spray device assembly is arranged in the pipeline, each stage of the multi-stage water spray device assembly is about 3 meters in length, the bottoms of the centrifugal dehydration device and the demisting purification device are respectively provided with a water collecting tank, the bottom of the water collecting tank is connected with a drain pipe for collecting water for recycling, water, gas and dust are forced to be washed by sprayed water spray columns and fall to the bottom of the pipeline, a large amount of dust-containing water mist is collected into water flow which falls into the water collecting tank, and the water flow flows into the pipeline under the influence of gravity and falls into a return mine belt; the gas and residual dust cleaned by the water mist column are beaten down on the diffusion type circumferential wall of the pipeline by a centrifugal blade of the pipeline centrifugal dehydration device and are converged into water flow which falls into a water collecting tank to be collected and recycled; the gas after spray cleaning and dehydration directly enters a demisting and purifying device for full interception and final purification, so that the air pollution, particularly the water, gas and dust pollution in a wet environment can be effectively treated, and the problems in the prior art are solved.
Compared with the prior art, the invention has the advantages that: the purification device and the purification method have the functions of dust removal, dehydration and demisting as well as dust-gas separation due to the combined action of the multi-stage water spray device, the centrifugal dehydration device and the demisting purification device, are durable and can be used repeatedly. The treated dust gas can reach the standard and be discharged, a new technical scheme is provided for dewatering, demisting and dedusting in a wet environment, and the method has great application value.
Drawings
FIG. 1 is a schematic view of the structure of the purification apparatus of the present invention.
FIG. 2 is a flow chart of the purification method of the present invention.
In the attached drawings, 1 is a mixing barrel; 2 is a water mist inlet; 3 is a multi-stage water spray device component; 3-1 is a first water spray device; 3-2 is a second water spray device; 3-3 is a third water spray device; 3-4 is a fourth water spray device; 3-5 is a fifth water spray device; 4 is a centrifugal dehydration device; 5 is a demisting purification device; 6 is a fan; 7 is an exhaust chimney; 8 is a drain pipe; 9 is a second water collecting tank; and 10 is a third water collecting tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, a multi-stage water spray dust removal, dehydration, demisting and purification device comprises a mixing cylinder 1, a water mist inlet 2, a multi-stage water spray device component 3, a centrifugal dehydration device 4, a demisting and purification device 5, a fan 6, an exhaust chimney 7 and a drain pipe 8, wherein the upper port of the mixing cylinder 1 is connected with the lower port of the water mist inlet 2, the upper port of the water mist inlet 2 is connected with the multi-stage water spray device component 3, the multi-stage water spray device component 3 comprises a plurality of stages of water spray devices (in the embodiment, five stages of water spray devices are a first water spray device 3-1, a second water spray device 3-2, a third water spray device 3-3, a fourth water spray device 3-4 and a fifth water spray device 3-5 respectively), the bottom of each stage of water spray device is connected with a first water collecting tank (not shown in the figure), the first water collecting tank (not shown) is connected with a water drainage pipe 8, the multi-stage water spray device assembly 3 extends upwards in an inclined manner of 25-40 degrees and is connected with the centrifugal dehydration device 4 through an air guiding pipeline, the centrifugal dehydration device 4 is connected with the demisting and purifying device 5 through a pipeline, the demisting and purifying device 5 is connected with a fan 6, and the fan 6 is connected with an exhaust chimney 7; the bottom of the centrifugal dehydration device 4 and the demisting and purifying device 5 is respectively provided with a second water collecting tank 9 and a third water collecting tank 10, and the second water collecting tank 9 and the third water collecting tank 10 are connected with a drain pipe 8.
Further, the length of each stage of water spray device is about 3 meters.
Furthermore, the water mist inlet 2 is in a horn mouth shape, and one side of the wide mouth is connected with the mixing barrel 1.
Further, the centrifugal dewatering device 4 and the demisting purification device 5 are installed at a height of 15 meters from the ground.
As shown in FIG. 2, the invention also discloses a multistage water-spraying dust-removing, dewatering and demisting method, which comprises the following steps:
(1) equipment installation: a centrifugal dehydration device 4 and a demisting purification device 5 are installed at a high position 15 meters away from the ground, a mixing cylinder 1 is arranged on the ground, a multi-stage water spray device assembly 3 is connected between the mixing cylinder 1 and the centrifugal dehydration device 4, the multi-stage water spray device assembly 3, the centrifugal dehydration device 4 and the demisting purification device 5 are respectively connected with a first water collecting tank, a second water collecting tank 9 and a third water collecting tank 10, each water collecting tank is connected to a drain pipe 8, and the demisting purification device 5 is connected with an exhaust chimney 7 through a fan 6;
(2) introducing a water, gas and dust mixture: introducing the mixture of water, gas and dust into the mixing cylinder 1 through a fan 6;
(3) first-stage jet cleaning and purifying: connecting the mixing cylinder 1 with a multi-stage water spray device assembly 3 to enable the water, gas and dust mixture to receive water spray of the multi-stage water spray device assembly 3, connecting a first water collecting tank at the bottom of the multi-stage water spray device assembly 3, and collecting the water, gas and dust mixture washed from the multi-stage water spray device assembly 3;
(4) secondary centrifugal dehydration purification: introducing the residual micro-dust purified by the multi-stage water spray device component 3 into a centrifugal dehydration device 4, dropping the residual micro-dust on the diffusion-type circumferential wall of the pipeline through a blade of a centrifugal fan 6 of the centrifugal dehydration device 4, and collecting the residual micro-dust into water flow to fall into a second water collecting tank 9 for collection and reuse;
(5) three-stage demisting and purifying: the gas after spray cleaning and dehydration is introduced into a defogging and purifying device 5 for full interception and final purification, and is discharged.
The working principle of the invention is as follows: the invention installs the centrifugal dehydration plant 4 and the demisting purification plant 5 at the height of 15 meters above the ground, the induced duct is upwards connected to the centrifugal dehydration plant 4, the inclination is between 25 degrees and 40 degrees, the multi-stage water spray device component 3 is installed in the duct, the length of each stage of water spray device of the multi-stage water spray device component 3 is about 3 meters, the centrifugal dehydration plant 4 and the demisting purification plant 5 are both provided with a water collecting tank at the bottom, the water collecting tank is connected with a water discharge pipe 8 for recycling water, gas and dust are forced to be washed by the sprayed water mist column and fall to the bottom of the duct, a large amount of dust-containing water mist is collected into the water collecting tank, and the water flows into the duct under the influence of gravity and falls into a return belt for recycling; the gas and residual dust cleaned by the water mist column are beaten down on the diffusion type circumferential wall of the pipeline by a centrifugal blade of the pipeline centrifugal dehydration device and are converged into water flow which falls into a water collecting tank to be collected and recycled; the gas after being sprayed, cleaned and dehydrated directly enters the demisting and purifying device 5 for full interception and final purification, so that the air pollution, especially the water, gas and dust pollution in a wet environment can be effectively treated, and the problems in the prior art are solved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations that are made by using the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are all included in the scope of the present invention.

Claims (6)

1. The utility model provides a multistage water spray dust removal and dehydration defogging purifier which characterized in that: the multi-stage water mist spraying device assembly is connected with the centrifugal dehydration device through an induced duct, the centrifugal dehydration device is connected with the demisting purification device through a pipeline, the demisting purification device is connected with a fan, and the fan is connected with an exhaust chimney; and the bottoms of the centrifugal dehydration device and the demisting purification device are respectively provided with a second water collecting tank and a third water collecting tank, and the second water collecting tank and the third water collecting tank are connected with a drain pipe.
2. The multi-stage water-spraying dust-removing, dewatering and demisting purification device as claimed in claim 1, wherein: the multi-stage water spray device assembly extends upwards at an inclination of 25-40 degrees and is connected to the centrifugal dewatering device.
3. The multi-stage water-spraying dust-removing, dewatering and demisting purification device as claimed in claim 1, wherein: the length of each stage of water spray device is 3 meters.
4. The multi-stage water-spraying dust-removing, dewatering and demisting purification device as claimed in claim 1, wherein: the water mist inlet is in a horn mouth shape, and one side of the wide mouth is connected with the mixing barrel.
5. The multi-stage water-spraying dust-removing, dewatering and demisting purification device as claimed in claim 1, wherein: the centrifugal dehydration device and the demisting purification device are arranged at the height of 15 meters above the ground.
6. A multi-stage water spray dust removal and dehydration demisting method is characterized in that: the method comprises the following steps:
(1) equipment installation: a centrifugal dehydration device and a demisting purification device are installed at a high position 15 meters away from the ground, a mixing cylinder is arranged on the ground, a multi-stage water spray device assembly is connected between the mixing cylinder and the centrifugal dehydration device, the multi-stage water spray device assembly, the centrifugal dehydration device and the demisting purification device are respectively connected with a first water collecting tank, a second water collecting tank and a third water collecting tank, each water collecting tank is connected to a drain pipe, and the demisting purification device is connected with an exhaust chimney through a fan;
(2) introducing a water, gas and dust mixture: introducing the mixture of water, gas and dust into a mixing barrel through a fan;
(3) first-stage jet cleaning and purifying: connecting the mixing cylinder with a multi-stage water spray device assembly to enable the water, gas and dust mixture to be sprayed by the water spray device assembly, connecting a first water collecting tank at the bottom of the multi-stage water spray device assembly, and collecting the water, gas and dust mixture washed from the multi-stage water spray device assembly;
(4) secondary centrifugal dehydration purification: introducing the residual micro-dust purified by the multi-stage water spray device assembly into a centrifugal dehydration device, dropping the residual micro-dust on the diffusion-type circumferential wall of the pipeline through centrifugal blades of the centrifugal dehydration device, and converging the residual micro-dust into water flow which falls into a second water collecting tank to be collected and recycled;
(5) three-stage demisting and purifying: and introducing the gas subjected to jet cleaning and dehydration into a demisting and purifying device for full interception and final purification, and discharging.
CN201910782185.9A 2019-08-23 2019-08-23 Multi-stage water-spraying dust-removing, dewatering, demisting and purifying device and method Pending CN110624347A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2400173Y (en) * 1999-12-13 2000-10-11 宫起光 Wet dust-removing desulphurization plant
CN2477284Y (en) * 2001-06-01 2002-02-20 冯镜元 Centrifugal wetting fume purifier
JP3827243B1 (en) * 2005-05-20 2006-09-27 優章 荒井 Cyclone air purifier
CN106076040A (en) * 2016-08-10 2016-11-09 安徽理工大学 A kind of jet atomization formula mining eddy flow inertial dust separator and use technique thereof
CN107174913A (en) * 2017-07-26 2017-09-19 中国石油大学(华东) A kind of multistage integratedization coking emission-control equipment
CN108310879A (en) * 2017-01-17 2018-07-24 株式会社奥思伟 The rolling oil regeneration system and rolling oil regeneration method of the device containing centrifugal
CN109453596A (en) * 2018-11-30 2019-03-12 四川安宁铁钛股份有限公司 Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas
CN211274050U (en) * 2019-08-23 2020-08-18 上海超高环保科技股份有限公司 Multistage water spray dust removal and dehydration defogging purifier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2400173Y (en) * 1999-12-13 2000-10-11 宫起光 Wet dust-removing desulphurization plant
CN2477284Y (en) * 2001-06-01 2002-02-20 冯镜元 Centrifugal wetting fume purifier
JP3827243B1 (en) * 2005-05-20 2006-09-27 優章 荒井 Cyclone air purifier
CN106076040A (en) * 2016-08-10 2016-11-09 安徽理工大学 A kind of jet atomization formula mining eddy flow inertial dust separator and use technique thereof
CN108310879A (en) * 2017-01-17 2018-07-24 株式会社奥思伟 The rolling oil regeneration system and rolling oil regeneration method of the device containing centrifugal
CN107174913A (en) * 2017-07-26 2017-09-19 中国石油大学(华东) A kind of multistage integratedization coking emission-control equipment
CN109453596A (en) * 2018-11-30 2019-03-12 四川安宁铁钛股份有限公司 Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas
CN211274050U (en) * 2019-08-23 2020-08-18 上海超高环保科技股份有限公司 Multistage water spray dust removal and dehydration defogging purifier

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