CN109569169B - Device and method for capturing fine particles of sintering flue gas - Google Patents
Device and method for capturing fine particles of sintering flue gas Download PDFInfo
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- CN109569169B CN109569169B CN201811621271.3A CN201811621271A CN109569169B CN 109569169 B CN109569169 B CN 109569169B CN 201811621271 A CN201811621271 A CN 201811621271A CN 109569169 B CN109569169 B CN 109569169B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/025—Other waste gases from metallurgy plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The application discloses a device and a method for capturing fine particles of sintering flue gas, and belongs to the field of pollution control of iron ore sintering flue gas. The application comprises a particle agglomeration unit, wherein an agglomeration agent spray head is arranged in the particle agglomeration unit; the device comprises a folding trapping unit, wherein a vibrator is arranged on the folding trapping unit, a particle agglomeration unit is arranged on the upper part of the folding trapping unit, and the bottom of the particle agglomeration unit is connected with an air inlet bent pipe of the folding trapping unit. According to the agglomeration trapping device, the fine particles are agglomerated by the particle agglomeration unit and the folding trapping unit, and then trapped by the folding trapping unit and stored in the storage part, so that the removal efficiency of the flue gas particles is improved.
Description
The patent application of the application is aimed at the application of division of application number 2016110779779, and the application date of the original application is as follows: 2016-11-30, the application is named: a folding and gathering unit and an agglomeration and gathering device for fine particles of sintering flue gas.
Technical Field
The application relates to the field of iron ore sintering flue gas pollution treatment, in particular to a sintering flue gas fine particulate matter turning and capturing unit and an agglomeration and capturing device.
Background
The iron ore sintering process is an indispensable link in the modern steel production flow and is the largest PM in the steel industry 10 And PM 2.5 Emission source, accounting for about 40% of the total emission. At present, the traditional dust removal mode is difficult to effectively control PM 2.5 The pretreatment stage is arranged in front of the dust remover, so that fine particles can be agglomerated into particles with larger particle diameters through physical or chemical actions, and the particles can be removed by the traditional dust remover to become a novel dust removing method.
At present, a dust remover is mainly adopted in a sintering plant to purify particles in sintering flue gas, and the dust remover has a good effect of removing coarse particles in the flue gas, but has a good effect of removing fine Particles (PM) with a particle size smaller than 10 mu m 10 And PM 2.5 ) The particle diameter is small, the specific resistance is high, and the charging capability is poor. General dust removal method is difficult to effectively remove fine particles, and development of treatment equipment for fine particles in sintering flue gas is urgently needed, so that fine particles in sintering flue gas are treatedAnd the granules are effectively treated.
Through searching, chinese patent application number: 201620055887.9 the authorized bulletin day is day 2016, month 6 and 29, and the application creates a flue gas dust removal system, which discloses a flue gas dust removal system, and the dust removal system comprises a gravity settling chamber, an inertial dust removal device, a cyclone dust removal device and a wet electric dust removal device; the inertial dust collector is arranged in the gravity settling chamber and positioned at the smoke outlet end of the gravity settling chamber, and the smoke outlet end of the gravity settling chamber is connected with the smoke inlet end of the cyclone dust collector; the wet electric dust collector is arranged at the flue gas outlet end of the cyclone dust collector. This application has improved dust removal efficiency for current wet-type electric precipitation unit to a certain extent, but its shortcoming lies in the dust collecting equipment type that uses is more, and the pressure loss is big, and the energy consumption is high, and equipment investment cost is higher.
In addition, chinese patent application No.: 201610288719.9, the application date is 28 days of 2016, 4 months, and the application and the creation name are iron ore sintering flue gas PM 10 And PM 2.5 The application discloses an emission reduction system of fine particles in an iron ore sintering process, wherein in the iron ore sintering process, an agglomeration liquid is sprayed into a flue gas channel of sintering flue gas, the fine particles in the sintering flue gas are agglomerated and grown under the action of the agglomeration liquid, and a dust removal device is used for removing the agglomerated and grown fine particles, and the agglomeration agent comprises polyaluminium chloride, sodium carboxymethyl cellulose, polyacrylamide and a solid additive. The application causes the agglomeration liquid fog drops adsorbed with the fine particles to nucleate, collide and grow under the condition of low pressure, forms large particle agglomerates, and adopts a dust removing device to remove the agglomerated and grown fine particles. The application provides a novel method for reducing emission of fine particles in iron ore sintering flue gas, which improves the agglomeration effect of the fine particles in the iron ore sintering flue gas to realize emission reduction of the fine particles, but the application also needs to be matched with a more efficient trapping device if the trapping of the fine particles after agglomeration is to be improved.
Disclosure of Invention
1. Technical problem to be solved by the application
The application aims to solve the problem that fine particles are difficult to effectively remove in the iron ore sintering process in the prior art, and provides a sintering flue gas fine particle trapping device and a trapping method, wherein the efficiency of removing flue gas particles is improved through a obliquely arranged storage component;
the device for agglomerating and capturing the fine particles in the iron ore sintering flue gas ensures that the fine particles in the flue gas are agglomerated and grown first and then captured by the obliquely arranged storage component, so that the removal efficiency of the fine particles in the flue gas is improved.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the application is as follows:
the application relates to a device for capturing fine particles of sintering flue gas, which comprises a particle agglomeration unit, wherein an agglomeration agent spray head is arranged in the particle agglomeration unit; a folding trap unit, which is provided with a vibrator; the particle agglomeration unit is arranged at the upper part of the turn-around trapping unit, and the bottom of the particle agglomeration unit is connected with the air inlet bent pipe of the turn-around trapping unit.
Preferably, the turn-around trap unit comprises a reservoir member and is disposed obliquely on the outlet elbow.
Preferably, the particle aggregation unit is provided with an aggregation agent spray head; the device comprises a folding trapping unit, a storage part, an air inlet elbow and an air outlet elbow, wherein the bottoms of the air inlet elbow and the air outlet elbow are communicated and form a folding elbow, the storage part is obliquely arranged on the air outlet elbow, and particles are settled in the folding elbow and stored in the storage part; the particle agglomeration unit is arranged at the upper part of the turn-around trapping unit, and the bottom of the particle agglomeration unit is connected with the air inlet bent pipe of the turn-around trapping unit.
Preferably, the particle agglomeration unit comprises an agglomeration agent spray head, a turbulent flow column and a particle agglomeration chamber, wherein the agglomeration agent spray head and the turbulent flow column are arranged in the particle agglomeration chamber, and the agglomeration agent spray head is positioned on the upper part of the turbulent flow column.
Preferably, the corona electrode is arranged at the lower part of the turbulent flow column, and the dust collecting electrode is arranged above the inlet of the reservoir component.
Preferably, the injection direction of the agglomeration agent nozzle is opposite to the flow direction of the flue gas; the cross section of the turbulent flow column is isosceles triangle.
Preferably, the bottom of the particle agglomeration chamber is provided with a constriction duct, the cross-sectional area of which decreases gradually along a vertical downward direction, and the particle agglomeration chamber is connected with the air inlet elbow through the constriction duct.
Preferably, the device further comprises an electrostatic dust removal unit, wherein the electrostatic dust removal unit comprises a corona electrode, a dust collection electrode and a power supply component, the corona electrode is arranged in the particle agglomeration unit, the dust collection electrode is arranged on an air outlet elbow of the turn-around trapping unit, and the corona electrode and the dust collection electrode are respectively connected with a negative positive electrode of the power supply component.
The application relates to a method for gathering and collecting fine particles of sintering flue gas,
step one, agglomeration of fine particles
The flue gas enters an agglomeration trapping device, an agglomeration agent is sprayed into the flue gas in the agglomeration trapping device, fine particles are fully mixed with the agglomeration agent, and fog drops of the agglomeration agent are fully mixed with the flue gas and agglomerated to grow;
step two, trapping particulate matters
The fine particles are aggregated and grown up and then enter a turning bend pipe of the aggregation trapping device, the gas flow direction of the smoke is rapidly changed at a turning part at the lower part of the turning bend pipe, the particles in the smoke are separated from the smoke under the action of gravity and inertia force, a storage part is obliquely arranged on the turning bend pipe, and the particles are trapped and stored by the storage part.
The application relates to a smoke particulate matter folding and trapping unit which comprises a storage part, an air inlet bent pipe and an air outlet bent pipe, wherein the bottoms of the air inlet bent pipe and the air outlet bent pipe are communicated and form a folding bent pipe, the storage part is obliquely arranged on the air outlet bent pipe, and particulate matters are settled in the folding bent pipe and stored in the storage part.
Preferably, the air inlet bent pipe and the air outlet bent pipe are connected with the flue gas pipeline through the vibration corrugated pipe.
Preferably, the inclination angle of the reservoir component and the vertical direction is 10-30 degrees, and a water mist nozzle is arranged at the inlet of the reservoir component.
Preferably, a vibrator is arranged on the folding trapping unit.
The application relates to an agglomeration and trapping device for fine particles in iron ore sintering flue gas, which comprises
The particle agglomeration unit is internally provided with an agglomeration agent spray head;
a turn-around trap unit, which is the turn-around trap unit described in the claims;
the particle agglomeration unit is arranged at the upper part of the turn-around trapping unit, and the bottom of the particle agglomeration unit is connected with the air inlet bent pipe of the turn-around trapping unit.
Preferably, the particle agglomeration unit comprises an agglomeration agent spray head, a turbulent flow column and a particle agglomeration chamber, wherein the agglomeration agent spray head and the turbulent flow column are arranged in the particle agglomeration chamber, and the agglomeration agent spray head is positioned on the upper part of the turbulent flow column.
Preferably, the injection direction of the agglomeration agent nozzle is opposite to the flow direction of the flue gas; the cross section of the turbulent flow column is isosceles triangle.
Preferably, the bottom of the particle agglomeration chamber is provided with a constriction duct, the cross-sectional area of which decreases gradually along a vertical downward direction, and the particle agglomeration chamber is connected with the air inlet elbow through the constriction duct.
Preferably, the device further comprises an electrostatic dust removal unit, wherein the electrostatic dust removal unit comprises a corona electrode, a dust collection electrode and a power supply component, the corona electrode is arranged in the particle agglomeration unit, the dust collection electrode is arranged on an air outlet elbow of the turn-around trapping unit, and the corona electrode and the dust collection electrode are respectively connected with a negative positive electrode of the power supply component.
Preferably, the corona electrode is arranged at the lower part of the turbulent flow column, and the dust collecting electrode is arranged above the inlet of the reservoir component.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the application has the following remarkable effects:
(1) According to the smoke particulate matter folding and trapping unit, the bottoms of the air inlet elbow and the air outlet elbow are communicated and form the folding elbow, the storage component is obliquely arranged on the air outlet elbow, the storage component is obliquely arranged at the bottom of the air outlet elbow, particles are settled at the bottom of the folding elbow under the combined action of gravity and inertia force in the particle movement process and are mainly accumulated at the bottom of the air outlet elbow, and as the included angle between the upper end opening of the storage component and the horizontal plane is 10-30 degrees, the particles can directly move into the storage component from the upper end opening of the storage component in the settling process of the bottom of the air outlet elbow, so that the particles are promoted to be directly trapped by the storage component, and the smoke particulate matter removal efficiency is improved;
(2) According to the smoke particulate matter turning and trapping unit, the smoke inflow end at the top of the air inlet bent pipe is connected with the smoke pipeline at the upper part through the vibration corrugated pipe, and the smoke outflow end at the top of the air outlet bent pipe is connected with the smoke pipeline at the upper part through the vibration corrugated pipe, namely the turning bent pipe can vibrate vertically relative to the smoke pipeline, fine particulate matters in smoke are disturbed in the turning bent pipe along with the smoke in the vibration process, so that the collision of the particulate matters in the turning bent pipe is promoted, the agglomeration growth of the fine particulate matters is promoted, and the removal efficiency of the smoke particulate matters is improved;
(3) According to the agglomeration trapping device for the fine particles in the iron ore sintering flue gas, the agglomerating agent spray head and the turbulent flow column are arranged in the particle agglomeration chamber, the agglomerating agent spray head is arranged at the upper part of the turbulent flow column, the spraying direction is opposite to the flowing direction of the flue gas, the contact opportunity of the fine particles in the flue gas and the agglomerating agent droplets sprayed out from the head face of the agglomerating agent spray head is increased, and the rapid agglomeration of the particles is promoted;
(4) According to the iron ore sintering flue gas fine particulate matter agglomeration and trapping device, the corona electrode is connected with the negative electrode of the power supply component, the dust collection electrode is connected with the positive electrode of the power supply component, particulate matters in flue gas are loaded with negative charges at the lower part of the particulate agglomeration unit and then enter the electrostatic dust collection unit, the particulate matters carrying the negative charges are trapped by the dust collection electrode at the position above the inlet of the storage component, the bent pipe can vibrate in the vertical direction relative to the particulate agglomeration unit, mutual collision is generated due to vibration, the contact probability of the particulate matters and the dust collection electrode is increased, and therefore the particulate matters are promoted to be trapped by the dust collection electrode at the position above the inlet of the storage component and are settled in the storage component.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an agglomeration trapping device for fine particles of iron ore sintering flue gas;
fig. 2 is a schematic structural view of the reservoir member of the present application.
Reference numerals in the schematic drawings illustrate:
100. a particle agglomeration unit; 101. an agglomeration agent spray head; 102. a turbulent flow column; 103. shrinking the pipeline; 104. a particle agglomeration chamber; 105. expanding the pipeline;
200. a turn-around trapping unit; 201. vibrating the corrugated pipe; 202. a vibrator; 210. a reservoir component; 211. a dust collecting spoiler; 212. a water mist spray head; 213. a dust discharging valve; 214. a dust collection bellows; 220. an air inlet elbow; 221. a flue gas inflow end; 230. an air outlet elbow; 231. a smoke outflow end;
300. an electrostatic dust removal unit; 301. a corona electrode; 302. a dust collecting electrode; 303. and a power supply part.
Detailed Description
The following detailed description of exemplary embodiments of the application refers to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration exemplary embodiments in which the application may be practiced. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the application, it is to be understood that other embodiments may be realized and that various changes to the application may be made without departing from the spirit and scope of the application. The following more detailed description of the embodiments of the application is not intended to limit the scope of the application, as claimed, but is merely illustrative and not limiting of the application's features and characteristics in order to set forth the best mode of carrying out the application and to sufficiently enable those skilled in the art to practice the application. Accordingly, the scope of the application is limited only by the attached claims.
The following detailed description and example embodiments of the application may be better understood when read in conjunction with the accompanying drawings, in which elements and features of the application are identified by reference numerals.
Example 1
Referring to fig. 1, a smoke particulate matter turning and capturing unit of the present embodiment includes a storage component 210, an air inlet elbow 220 and an air outlet elbow 230, the bottoms of the air inlet elbow 220 and the air outlet elbow 230 are communicated and form a turning elbow, the storage component 210 is obliquely arranged on the air outlet elbow 230, the storage component 210 is obliquely arranged at the bottom of the air outlet elbow 230, as shown in fig. 1, the storage component 210 is arranged on the right side of the bottom of the turning elbow, and the storage component 210 is in a spherical shape, so that fine particulate matter is difficult to fly out from the storage component 210 once entering the storage component 210, and secondary dust emission of particles in the storage component 210 is prevented.
The particulate matter is settled in the turn-around pipe and stored in the reservoir member 210, and the inclination angle of the reservoir member 210 to the vertical direction is 10 to 30 °, i.e., the inclination angle of the geometric center line of the reservoir member 210 to the vertical direction is δ, δ=10 to 30 °, i.e., the angle of the upper end opening of the reservoir member 210 to the horizontal plane is 10 to 30 °, and this embodiment is preferably 20 °. When the flue gas and the particulate matter move in the bend pipe, the particulate matter in the flue gas will settle in the bend pipe under the combined action of gravity and inertia force and mainly gather at the bottom of the air outlet bend pipe 230, and the particulate matter can directly move from the upper end opening of the air outlet bend pipe 230 to the air outlet bend pipe 210 during the settling process of the bottom of the air outlet bend pipe 230 because the included angle between the upper end opening of the air outlet bend pipe 210 and the horizontal plane is 10-30 degrees.
It should be further noted that, the position with the smallest radius of curvature of the bending pipe is located at the bottommost part of the bending pipe, while the storage component 210 of the present application is not disposed at the position with the smallest radius of curvature of the bending pipe, but is disposed on the air outlet bending pipe 230 in an inclined manner, and the storage component 210 is disposed in an inclined manner, which breaks the inertial thinking that the trap device is disposed at the position with the smallest radius of curvature or the vertically lowest position of the bending pipe of the bending dust collector, and has better trapping and trapping effects on the particulate matters. The reason for this may be that, based on the original initial velocity of the particles in the flue gas, the particles are more likely to gather near the bottom of the air outlet elbow 230 under the combined action of gravity and the inertial force during the movement of the particles, and this arrangement makes the particles more likely to settle in the elbow and be stored in the reservoir component 210.
The inlet of the reservoir component 210 is further provided with a water mist nozzle 212, and the particles are subjected to secondary agglomeration in the reservoir component 210 after being wetted by the water mist, so that the fine particles are agglomerated and grown, the weight is increased, and the particles settled at the bottom of the reservoir component 210 are prevented from flying into the air outlet elbow 230 again. Further, a dust discharge valve 213 is provided at the bottom of the reservoir member 210, and when a part of the particulate matter is accumulated in the reservoir member 210, the dust discharge valve 213 is opened to discharge the particulate matter accumulated in the reservoir member 210.
The air inlet elbow 220 and the air outlet elbow 230 are connected with the flue gas pipeline through the vibration corrugated pipe 201, namely, the flue gas inflow end 221 at the top of the air inlet elbow 220 is connected with the flue gas pipeline at the upper part through the vibration corrugated pipe 201, and the flue gas outflow end 231 at the top of the air outlet elbow 230 is connected with the flue gas pipeline at the upper part through the vibration corrugated pipe 201, namely, the deflection elbow can vibrate vertically relative to the flue gas pipeline, fine particles in flue gas can be disturbed in the deflection elbow along with the flue gas in the vibration process, so that the collision of the particles in the deflection elbow is promoted, the agglomeration growth of the fine particles is promoted, in addition, the complexity of the movement of the particles in the deflection elbow is increased in the vibration process of the deflection elbow, and the particles are promoted to enter the storage part 210 more easily. The deflector 202 is disposed on the deflector trap unit 200, and the deflector 202 can induce the deflector pipe to vibrate.
Example 2
The device for gathering and capturing fine particles in the iron ore sintering flue gas comprises a particle gathering unit 100 and a turn-around capturing unit 200, wherein an agglomerating agent nozzle 101 is arranged in the particle gathering unit 100; the turn-around trap unit 200 is the above-described turn-around trap unit 200; the particle agglomeration unit 100 is arranged at the upper part of the turn-around trapping unit 200, the bottom of the particle agglomeration unit 100 is connected with the air inlet bent pipe 220 of the turn-around trapping unit 200, and particles are agglomerated and grown up in the particle agglomeration unit 100 and trapped by the turn-around trapping unit 200, so that the trapping efficiency of the particles in the flue gas is improved.
The particle agglomeration unit 100 is arranged at the upper part of the turn-around capture unit 200, the bottom of the particle agglomeration unit 100 is connected with an air inlet bent pipe 220 of the turn-around capture unit 200, the particle agglomeration unit 100 comprises an agglomeration agent spray head 101, a turbulence column 102 and a particle agglomeration chamber 104, the agglomeration agent spray head 101 and the turbulence column 102 are arranged in the particle agglomeration chamber 104, the agglomeration agent spray head 101 is arranged at the upper part of the turbulence column 102, the spraying direction is opposite to the flow direction of flue gas, and the contact opportunity of fine particles in the flue gas and agglomeration agent mist drops sprayed out from the head face of the agglomeration agent spray head 101 is increased, so that the agglomeration effect is improved.
It is worth noting that the diameter of the particle agglomeration chamber 104 is larger than that of the flue gas pipeline, an expansion pipeline 105 is arranged on the upper side of the particle agglomeration chamber 104 in a pipeline mode, the expansion pipeline 105 connects the flue gas pipeline with the particle agglomeration chamber 104, primary turbulence is generated at the expansion pipeline 105 by flue gas, and meanwhile the flue gas speed is reduced. After the flue gas enters the particle agglomeration chamber 104 from the flue gas pipeline at the upper part, the flow speed of the flue gas is reduced, so that fine particles are in contact with the agglomerating agent droplets more fully, and the mixing of the particles in the flue gas and the agglomerating agent is facilitated; the cross section of the turbulent flow column 102 is isosceles triangle, the bottom side of the triangle is perpendicular to the flow direction of the flue gas, the top angle pointing direction is opposite to the flow direction of the flue gas, and when the flue gas passes through the turbulent flow column 102, turbulence is generated, and through rotation and mutual collision, fine particles and agglomerating agent droplets are fully contacted with other particles, so that the agglomerating effect is enhanced, the agglomeration of the fine particles is promoted to grow up, the particle size of the particles is increased, and the particles are favorably trapped by the following turn-around trapping unit 200.
The bottom of the particle agglomeration chamber 104 is provided with a shrinkage pipeline 103, the cross-sectional area of the shrinkage pipeline 103 is gradually reduced along the vertical downward direction, the particle agglomeration chamber 104 is connected with an air inlet elbow 220 through the shrinkage pipeline 103, and the air flow rate is increased, so that the flue gas enters the turn-around capturing unit 200 to have higher initial speed, generate larger inertia force, and be favorable for sedimentation of particles in the turn-around capturing unit 200.
The flue gas inflow end 221 at the top of the air inlet bent pipe 220 is connected with the upper contraction pipe 103 through the vibration corrugated pipe 201, and the flue gas outflow end 231 at the top of the air outlet bent pipe 230 is connected with the upper flue gas pipe through the vibration corrugated pipe 201, namely the bending bent pipe can vibrate in the vertical direction relative to the particle agglomeration unit 100.
Example 3
The basic content of this embodiment is the same as embodiment 2, except that: the device comprises a particle agglomeration unit 100, and is characterized by further comprising an electrostatic dust collection unit 300, wherein the electrostatic dust collection unit 300 comprises a corona electrode 301, a dust collection electrode 302 and a power supply component 303, the corona electrode 301 is arranged at the lower part of the particle agglomeration unit 100, and the speed of fine particles in sintering flue gas is reduced after turbulent flow agglomeration of the turbulent flow column 102, so that the fine particles are more fully charged after passing through the corona electrode 301, and the fine particles are agglomerated and grown at the upper part of the particle agglomeration chamber 104, so that the agglomerated and grown particles can be better charged by the corona electrode 301; the dust collecting electrode 302 is disposed above the inlet of the reservoir member 210, and the particulate matter trapped by the dust collecting electrode 302 falls into the reservoir member 210. In this embodiment, the corona electrode 301 and the dust collecting electrode 302 are respectively connected with the negative electrode of the power supply component 303, that is, the corona electrode 301 is connected with the negative electrode of the power supply component 303, and the dust collecting electrode 302 is connected with the positive electrode of the power supply component 303.
Under the condition that the corona electrode 301 discharges, particles in the flue gas are loaded with negative charges at the lower part of the particle agglomeration unit 100 and then enter the electrostatic dust collection unit 300, the particles carrying the negative charges are trapped by the dust collection electrode 302 above the inlet of the reservoir component 210, and the bent pipe can vibrate in the vertical direction relative to the particle agglomeration unit 100, so that mutual collision is generated due to vibration, and the contact probability of the particles and the dust collection electrode 302 is increased. Thereby promoting the trapping of particulate matter by the dust collecting electrode 302 above the inlet of the reservoir member 210 and the settling of particulate matter of the dust collecting electrode 302 in the reservoir member 210 during vibration.
Example 4
The basic content of this embodiment is the same as embodiment 2, except that: the vibrator 202 is disposed on the refraction and collection unit 200 of this embodiment, the whole refraction and collection unit 200 will generate vibration, particles collide with each other before reaching the dust collection electrode 302 above the reservoir component 210, and are more easily collected by the dust collection electrode 302, after reaching the dust collection electrode 302, the contact probability of the particles and the dust collection electrode 302 is increased due to the vibration, and the neutralized particles vibrate to pop up the dust collection electrode 302 and fall into the reservoir component 210, so as to capture and collect more particles. The air inlet bent pipe 220 and the air outlet bent pipe 230 are connected with a flue gas pipeline through the vibration corrugated pipe 201, the particle agglomeration unit 100 at the upper part can not vibrate in the vibration process of the folding capture unit 200, and the influence on the agglomeration process of the particle agglomeration unit 100 in the capture process of the folding capture unit 200 is reduced.
Example 5
As shown in fig. 2, the basic content of this embodiment is the same as embodiment 2, except that: the collecting part 210 is connected with the turning elbow through the dust collecting corrugated pipe 214, so that dust of the collecting part 210 caused by vibration of the turning elbow is avoided; a dust collecting spoiler 211 is further disposed at the inlet of the reservoir component 210, and is used for reducing the speed of the particles entering the reservoir component 210, and matching with the water mist nozzle 212, so that the secondary agglomeration effect of the particles through the water mist is better, and the particles in the reservoir component 210 are prevented from being raised.
The emission reduction step of the application is as follows:
step one, agglomeration of fine particles
The flue gas enters an agglomeration trapping device, an agglomeration agent is sprayed into the flue gas in the agglomeration trapping device, fine particles are fully mixed with the agglomeration agent, and fog drops of the agglomeration agent are fully mixed with the flue gas and agglomerated to grow; the detailed description is as follows:
A. the flue gas enters a particle aggregation chamber 104, the top of the particle aggregation chamber 104 is sprayed with agglomerating agent droplets, the spraying direction of the agglomerating agent droplets is opposite to the flowing direction of the flue gas, the flue gas moves in irregular directions under the turbulent flow action of a turbulent flow column 102, and the agglomerating agent droplets and the particles in the flue gas are fully mixed and agglomerated and grow;
B. after the particles agglomerate and grow up, the corona electrode 301 performs corona discharge on the particles to charge the particles, and the corona electrode 301 is connected with the negative electrode of the power supply part 303, so that the particles are negatively charged.
Step two, trapping particulate matters
The fine particles are aggregated and grown up and then enter a turning bend pipe of an aggregation trapping device, the gas flow direction of the smoke is rapidly changed at a turning part at the lower part of the turning bend pipe, the particles in the smoke are separated from the smoke under the action of gravity and inertia force, a storage part 210 is obliquely arranged on the turning bend pipe, and the particles are trapped and stored by the storage part 210; the detailed description is as follows:
A. particles in the flue gas are agglomerated and grown up, corona discharge is carried out, and then the particles enter a turn-around trap unit 200, and move along with the flue gas along the turn-around elbow, so that the particles are settled and trapped in a reservoir part 210 at the lower part of the turn-around elbow under the combined action of gravity and particle inertia force;
B. the power supply part 303 supplies power to the dust collection electrode 302, so that the dust collection electrode 302 carries charges different from particles, the non-settled particles are captured by the dust collection electrode 302 and stored in the storage part 210 after vibration; the dust collecting electrode 302 is connected with the positive electrode of the power supply part 303, the particles which are negatively charged by the corona electrode 301 are adsorbed by the dust collecting electrode 302, and the particles adsorbed by the dust collecting electrode 302 fall into the reservoir part 210 in the process of vibration and are trapped by the reservoir part 210.
The application has been described in detail hereinabove with reference to specific exemplary embodiments thereof. It will be understood that various modifications and changes may be made without departing from the scope of the application as defined by the appended claims. The detailed description and drawings are to be regarded in an illustrative rather than a restrictive sense, and if any such modifications and variations are desired to be included within the scope of the application described herein. Furthermore, the background art is intended to illustrate the state of the art and the meaning of the development and is not intended to limit the application or the field of application of the application.
More specifically, although exemplary embodiments of the present application have been described herein, the present application is not limited to these embodiments, but includes any and all embodiments modified, omitted, combined (e.g., between various embodiments), adapted, and/or substituted as would be recognized by those skilled in the art in light of the foregoing detailed description. The limitations in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. For example, in the present application, the term "preferably" is not exclusive, and here it means "preferably, but not limited to". Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the application should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (7)
1. The utility model provides a sintering flue gas fine particle thing entrapment device which characterized in that: comprises a particle aggregation unit (100), wherein an aggregation agent spray head (101) is arranged in the particle aggregation unit (100);
a folding trap unit (200), wherein a vibrator (202) is arranged on the folding trap unit (200); the particle agglomeration unit (100) is arranged at the upper part of the turn-around trapping unit (200), and the bottom of the particle agglomeration unit (100) is connected with an air inlet bent pipe (220) of the turn-around trapping unit (200);
the folding trapping unit (200) comprises a storage component (210), an air inlet bent pipe (220) and an air outlet bent pipe (230), wherein the bottoms of the air inlet bent pipe (220) and the air outlet bent pipe (230) are communicated and form the folding bent pipe, the storage component (210) is obliquely arranged on the air outlet bent pipe (230), a dust collecting spoiler (211) is further arranged at the inlet of the storage component (210), and particles are settled in the folding bent pipe and stored in the storage component (210).
2. The sintering flue gas fine particulate collection device of claim 1, wherein: the particle agglomeration unit (100) comprises an agglomeration agent spray head (101), a turbulence column (102) and a particle agglomeration chamber (104), wherein the agglomeration agent spray head (101) and the turbulence column (102) are arranged in the particle agglomeration chamber (104), and the agglomeration agent spray head (101) is positioned on the upper portion of the turbulence column (102).
3. The sintering flue gas fine particulate collection device of claim 2, wherein: the spraying direction of the agglomeration agent spray head (101) is opposite to the flowing direction of the flue gas; the cross section of the turbulent flow column (102) is isosceles triangle.
4. The sintering flue gas fine particulate collection device of claim 2, wherein: the bottom of the particle agglomeration chamber (104) is provided with a shrinkage pipeline (103), the cross section area of the shrinkage pipeline (103) is gradually reduced along the vertical downward direction, and the particle agglomeration chamber (104) is connected with an air inlet elbow pipe (220) through the shrinkage pipeline (103).
5. The sintering flue gas fine particulate collection device of claim 4, wherein: still include electrostatic precipitator unit (300), this electrostatic precipitator unit (300) include corona electrode (301), dust collecting electrode (302) and power supply unit (303), corona electrode (301) set up in granule reunion unit (100), dust collecting electrode (302) set up on return bend (230) of giving vent to anger of turning over trap unit (200), corona electrode (301), dust collecting electrode (302) link to each other with the negative positive electrode of power supply unit (303) respectively.
6. The sintering flue gas fine particulate collection device of claim 5, wherein: the corona electrode (301) is arranged at the lower part of the turbulent flow column (102), and the dust collection electrode (302) is arranged above the inlet of the reservoir component (210).
7. A method for gathering and collecting fine particles of sintering flue gas is characterized in that:
step one, agglomeration of fine particles
The flue gas enters a fine particle trapping device, an agglomerating agent is sprayed into the flue gas in the fine particle trapping device, fine particles are fully mixed with the agglomerating agent, and fog drops of the agglomerating agent are fully mixed with the flue gas and agglomerated and grown;
step two, trapping particulate matters
The fine particles are agglomerated and grown and then enter a turning bend of the fine particle trapping device, the fine particle trapping device is the fine particle trapping device according to claims 1-6, the gas flow direction of the smoke is rapidly changed at a turning part at the lower part of the turning bend, the particles in the smoke are separated from the smoke under the action of gravity and inertia force, a storage part (210) is obliquely arranged on the turning bend, and the particles are trapped and stored by the storage part (210).
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| CN201811621271.3A CN109569169B (en) | 2016-11-30 | 2016-11-30 | Device and method for capturing fine particles of sintering flue gas |
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| CN201811621271.3A CN109569169B (en) | 2016-11-30 | 2016-11-30 | Device and method for capturing fine particles of sintering flue gas |
| CN201611077977.9A CN106512632B (en) | 2016-11-30 | 2016-11-30 | A kind of sintering flue gas fine particle is turned back capture unit |
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| CN111672238A (en) * | 2020-06-11 | 2020-09-18 | 安徽天顺环保设备股份有限公司 | Nozzle anti-blocking device and method of submerged arc furnace flue gas spray dust remover |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3609853A1 (en) * | 1986-03-22 | 1987-09-24 | Bosch Gmbh Robert | Device for removing solid or liquid particles from a gas stream |
| DE4112455A1 (en) * | 1991-04-12 | 1992-10-15 | Ver Energiewerke Ag | Dust removal from flue gas - by gas flow diversion and electrostatic pptn. |
| JP2007107399A (en) * | 2005-10-11 | 2007-04-26 | Denso Corp | Exhaust emission control device for internal combustion engine |
| CN1957204A (en) * | 2004-05-21 | 2007-05-02 | 阿尔斯托姆科技有限公司 | Method and device for the separation of dust particles |
| CN101664623A (en) * | 2009-09-25 | 2010-03-10 | 合肥工业大学 | Ultrafine particle deduster |
| KR101265497B1 (en) * | 2012-10-30 | 2013-05-20 | 한국지질자원연구원 | Duct for ventilating air of mining with dust collecting structue by controlling air flow |
| CN103768886A (en) * | 2014-01-24 | 2014-05-07 | 浙江大学 | Efficient multi-field-coordination fine particulate matter removal device and method |
| CN104801420A (en) * | 2015-05-13 | 2015-07-29 | 东南大学 | Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling |
| CN105597477A (en) * | 2016-03-23 | 2016-05-25 | 河北工业大学 | Device and method for removing ultrafine particles in flue gas of coal boiler |
| CN105797531A (en) * | 2016-04-28 | 2016-07-27 | 安徽工业大学 | Method for inhibiting emission of fine particles in process of iron-ore sintering by agglomeration process |
| CN105854500A (en) * | 2016-04-28 | 2016-08-17 | 河北工业大学 | Turbulence agglomeration chamber and method for removing ultrafine particles applying same |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB373661A (en) * | 1931-02-02 | 1932-06-02 | George Henry Clifford Corner | Improvements in or relating to the separation of liquid particles from steam and other gases and apparatus therefor |
| CN102784536A (en) * | 2012-07-18 | 2012-11-21 | 樊荣 | Spiral pipe gas-water separator |
| CN102814098B (en) * | 2012-09-19 | 2015-01-28 | 巨锋 | Multilevel combined waste gas purifying equipment |
| CN103920354B (en) * | 2013-01-15 | 2016-08-03 | 宝山钢铁股份有限公司 | Steel-making roller slag processes the discharge tower dust arrester of multi-stage spray |
| CN204745985U (en) * | 2015-06-10 | 2015-11-11 | 长春职业技术学院（长春市职业技术教育中心长春市财政学校） | Electrified dust collector |
| CN104888571A (en) * | 2015-06-25 | 2015-09-09 | 山东钢铁股份有限公司 | Industrial flue gas dust removal device |
| CN205095600U (en) * | 2015-10-30 | 2016-03-23 | 施可丰泸州化工有限公司 | Monoammonium phosphate tail gas two -stage dust purification device |
| CN205235644U (en) * | 2015-12-25 | 2016-05-18 | 天津市维海环保工程设备有限公司 | Foam dust -removing device |
| CN206355783U (en) * | 2016-11-30 | 2017-07-28 | 安徽工业大学 | One kind sintering flue gas fine particulate matter is turned back capture unit and reunion capturing device |
-
2016
- 2016-11-30 CN CN201811621271.3A patent/CN109569169B/en active Active
- 2016-11-30 CN CN201611077977.9A patent/CN106512632B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3609853A1 (en) * | 1986-03-22 | 1987-09-24 | Bosch Gmbh Robert | Device for removing solid or liquid particles from a gas stream |
| DE4112455A1 (en) * | 1991-04-12 | 1992-10-15 | Ver Energiewerke Ag | Dust removal from flue gas - by gas flow diversion and electrostatic pptn. |
| CN1957204A (en) * | 2004-05-21 | 2007-05-02 | 阿尔斯托姆科技有限公司 | Method and device for the separation of dust particles |
| JP2007107399A (en) * | 2005-10-11 | 2007-04-26 | Denso Corp | Exhaust emission control device for internal combustion engine |
| CN101664623A (en) * | 2009-09-25 | 2010-03-10 | 合肥工业大学 | Ultrafine particle deduster |
| KR101265497B1 (en) * | 2012-10-30 | 2013-05-20 | 한국지질자원연구원 | Duct for ventilating air of mining with dust collecting structue by controlling air flow |
| CN103768886A (en) * | 2014-01-24 | 2014-05-07 | 浙江大学 | Efficient multi-field-coordination fine particulate matter removal device and method |
| CN104801420A (en) * | 2015-05-13 | 2015-07-29 | 东南大学 | Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling |
| CN105597477A (en) * | 2016-03-23 | 2016-05-25 | 河北工业大学 | Device and method for removing ultrafine particles in flue gas of coal boiler |
| CN105797531A (en) * | 2016-04-28 | 2016-07-27 | 安徽工业大学 | Method for inhibiting emission of fine particles in process of iron-ore sintering by agglomeration process |
| CN105854500A (en) * | 2016-04-28 | 2016-08-17 | 河北工业大学 | Turbulence agglomeration chamber and method for removing ultrafine particles applying same |
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| CN106512632A (en) | 2017-03-22 |
| CN106512632B (en) | 2018-12-14 |
| CN109569169A (en) | 2019-04-05 |
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