CN107051010A - A kind of swing type restrains rotational flow dust-removing demister - Google Patents
A kind of swing type restrains rotational flow dust-removing demister Download PDFInfo
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- CN107051010A CN107051010A CN201611233380.9A CN201611233380A CN107051010A CN 107051010 A CN107051010 A CN 107051010A CN 201611233380 A CN201611233380 A CN 201611233380A CN 107051010 A CN107051010 A CN 107051010A
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- flow dust
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 36
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- 239000000428 dust Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Rotational flow dust-removing demister is restrained the invention discloses a kind of swing type, belongs to exhaust-gas treatment field.The device is located at the top of spraying layer in absorption tower, and described device includes the n rotational flow dust-removing demisting units being disposed vertically, n >=1.Swing type dedusting demister of the present invention overcomes prior art the problem of inefficiency, to be had the advantages that meet emission request in the range of boiler full load in load change, and flexible adjustment, easy to operate, simple and easy to apply, and reliability is high.
Description
Technical field
The invention belongs to exhaust-gas treatment field, and in particular to a kind of swing type restrains rotational flow dust-removing demister.
Background technology
At present, the existing coal unit of China generally uses lime stone --- gypsum wet flue gas desulfurizing technique, from absorption
In the wet flue gas of tower discharge in addition to the dust not eliminated containing part front end deduster, also containing substantial amounts of in fine mist shape
State lime stone, gypsum slurries etc., with the raising increasingly of state environmental emissioning standard, need to carry out depth to the neat stress after desulfurization
Dedusting.According to newest promulgation《Fossil-fuel power plant atmospheric pollutant emission standard》, the dust concentration to smoke stack emission proposes 5mg/
m3Requirement.
The dedusting demisting of flue gas is most commonly seen technique in fume purifying processes, and type is varied, but for containing
For the processing of the saturation wet flue gas of a large amount of droplets, the intractability with reality.In order to solve fine dust, particulate
Deng the small miscellaneous dirt separation of particle diameter, part of generating units is handled using deflection plate demister+WESP (wet type electrostatic precipitator), but for
Retrofit work amount is huge for built desulfurization unit, generally existing absorption tower body need to be increased, strengthening of foundation, transforms the cycle
It is long, and it contains substantial amounts of high voltage electric equipment, operation and operation difficulty are larger.
Bundled tube dedusting demister as WESP a kind of substitute technology, because its simple in construction, reliable, energy consumption is low
And be used widely.Bundled tube dedusting demister is a kind of gas-liquid separator based on centrifugal force separate, utilizes rotary pneumatic
The centrifugal action of stream, the drop carried secretly in air-flow is got rid of to wall peripheral, fine drop, fine solid particle particle in flue gas, gas
The reunion that collides with each other of the finely ground particles such as colloidal sol is condensed into big drop, and big drop is captured by cyclone cylinder surface liquid film again, so that real
Now separate and remove with gas phase, with pressure drop it is small, except fog effect preferably, it is simple in construction, transformation implement it is simple the advantages of, especially fit
For the waste gas demisting in acid mist after wet desulphurization with solid or with salinity.However, for such demister, void tower
Velocity in pipes influences notable to flow velocity on the separative efficiency of demister in other words, typically, within the specific limits, with velocity in pipes
Increase, the removal efficiency of demister improves, because air-flow is through making rotational flow behind spiral-plate leaf gap, with
The increase of empty tower gas velocity, the tangential velocity of air-flow becomes big, and the centrifugal force suffered by the drop carried secretly in air-flow also can accordingly increase
Greatly, so as to be conducive to drop to get rid of the purpose for reaching separation to wall；At the same time, with the increase in pipe, the turbulence journey of air-flow
Degree increase, drop reentrainment phenomenon is increasingly severe, and reentrainment is acted on mainly due to both sides：One is that drop is being touched
Atomization when hitting, two be high velocity air shearing force on the Free Surface of liquid film, when reentrainment amount exceed certain value after,
The separative efficiency of demister also declines therewith.
As can be seen here, there is contradiction in velocity in pipes and efficiency of dust collection, maintain higher efficiency of dust collection then to improve pipe
Interior flow velocity, and flow velocity is too high, and the ratio of reentrainment greatly improved, so as to cause the decline of efficiency of dust collection；On the other hand,
The load of boiler is often fluctuated, and is changed generally between 30~110%, is so also just caused the change width of velocity in pipes
Degree is huge.In order to balance above-mentioned contradiction, prior art is generally using the processing method of compromise, namely with a specific load point
(such as 100% load or 70% load) is designed as design point, when actual motion load is significantly higher than the design point
When, reentrainment effectively causes removal efficiency lowly, and when actual load is significantly less than the design point, centrifugal force is not enough and leads
Cause separating effect not high, the requirement of discharge index can not be met when serious.
The content of the invention
The defect that the present invention exists for existing above-mentioned technology provides a kind of flow formula and restrains rotational flow dust-removing demister.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of swing type restrains rotational flow dust-removing demister, and the device is located at the top of spraying layer in absorption tower, including n
The rotational flow dust-removing demisting unit being disposed vertically, n >=1, the rotational flow dust-removing demisting unit includes cylindrical outer barrel, m eddy flow
Component, z can open and close type component, m >=1,0≤z≤1；
The eddy flow component includes several swirl vanes and a central tube, and swirl vane is uniform at an oblique angle
It is centrally located in the annular section between drum outer wall and cylindrical outer barrel inwall；
It is described can open and close type component include the first power transmission shaft, swingle, fix bar and sealing blade, described swingle
One end be fixedly connected with the first power transmission shaft, the other end is connected with cylindrical outer barrel and can freely rotated along cylindrical outer barrel；
One end of the fix bar is fixedly connected with cylindrical outer barrel inwall, and the other end is connected with the first power transmission shaft and can be along the first transmission
Axle is freely rotated；One end of described sealing blade is connected with swingle, and the other end is connected with fix bar.
In some technical schemes：When exhaust gases passes full open (blade contract fully), sealing blade is all rolled up solid
In fixed pole, without sealing blade on swingle, fix bar is adjacent with swingle；
When needing flue gas channel part closing (blade-section opening), rotating drive shaft makes swingle toward away from fixed
The direction of bar is rotated, and the sealing blade rotary expansion in fix bar is rolled up in drive, and with cylindrical outer barrel inwall and central tube
Outer wall forming portion enfeoffment closed walk, prevents flue gas from circulating；
With the gradually rotation of power transmission shaft, sealing blade is constantly unfolded, when being finally all unfolded, swingle and fixation
Bar is reversely adjacent, sealing blade, fix bar, swingle and cylindrical outer barrel inwall and center drum outer wall one complete circle of formation
Annular space, so as to reach the purpose of closing target exhaust gases passes.
When needing to open exhaust gases passes, power transmission shaft drives swingle to turn toward close to the direction of fix bar toward opposite direction rotation
Dynamic, sealing blade constantly bounces back, and rolls up in fix bar, closed channel is gradually decreased, and finally sealed blade all bounces back and rolled up
In fix bar, without sealing blade on swingle, fix bar is adjacent with swingle, and exhaust gases passes are fully opened.
The function that exhaust gases passes are partly or entirely opened or closed so is achieved that, when effectively have adjusted load fluctuation
Flow velocity in demisting unit.
In some technical schemes：Described device is provided with some second driving shafts, described second driving shaft and eddy flow
The first power transmission shaft in dedusting demisting unit is connected, and second driving shaft bar can control the rotary motion of the first power transmission shaft.
In some preferred technical schemes：Set and have elastic component in described fix bar, pass through the quilt of flexible member
Above-mentioned purpose is realized in stretching or contraction, the sealing blade material realization can also using itself with certain elasticity.
In some preferred technical schemes：In order that can be close together when fix bar and adjacent swingle,
Avoid occupying exhaust gases passes (blade full closing state) or influence smoke impervious effect (blade full open state), can be in fix bar
Add magnetic material respectively with the both sides of swingle.
In some preferred technical schemes：Sealing blade can be using monoblock, it would however also be possible to employ end to end many
The combination of piece banding, material can use metal steel strap, also can be using nonmetallic fiber cloth etc..
In some technical schemes：Between rotational flow dust-removing demisting unit and rotational flow dust-removing demisting unit with absorb inner wall of tower it
Between the upper and lower end face of rotational flow dust-removing demisting unit is provided with sealing plate.
In some technical schemes：It is described can open and close type component be located at rotational flow dust-removing demisting unit inward eddy component before,
Afterwards or between two eddy flow components.
In some technical schemes：The bottom of described cylindrical outer barrel is provided with spring bearing, the first described power transmission shaft
It is connected with spring bearing.
In some technical schemes：Described swirl vane is connected by way of welding with the inwall of cylindrical outer barrel.
In technical solution of the present invention：The number n of the rotational flow dust-removing demisting unit is that maximum can according to boiler peak load
Can the selection of void tower flow velocity.
In technical solution of the present invention：It is described can open and close type component number z no less than boiler minimum load/peak load ×
The sum (n) of rotational flow dust-removing demisting unit.Will be set in i.e. each rotational flow dust-removing demisting unit can open and close type component, can also
Part is not set, and can also be set entirely, but the total amount set be no less than the minimum load of boiler peak load-estimated (it is expected that)/
It is expected that boiler peak load × rotational flow dust-removing demisting unit sum (n), that is to say, that if in estimated minimum load feelings
Under condition, can by it is all can open and close type component close, reach the same velocity in pipes of estimated boiler busy hour.
Beneficial effects of the present invention：
Tube bank rotational flow dust-removing demister of the present invention overcomes prior art inefficiency in load change
Problem, has the advantages that meet emission request in the range of boiler full load, and flexible adjustment, easy to operate, simple easy
OK, reliability is high.
Brief description of the drawings
Fig. 1 is the top view that swing type restrains rotational flow dust-removing demister；
Fig. 2 is the front view that swing type restrains rotational flow dust-removing demister；
Fig. 3 is the front view that swing type restrains rotational flow dust-removing demisting unit；
Fig. 4 (a) for can open and close type component be closed, Fig. 4 (b) for can open and close type component be in part close shape
State；Fig. 4 (c) for can open and close type component be in opening；
Fig. 5 is the installation drawing of high-effective dust-removing deentrainment tower.
Wherein：1 is the first power transmission shaft, and 2 be cylinder centered on swirl vane, 3, and 4 be swingle, and 5 be spring bearing, and 6 be solid
Fixed pole, 7 be sealing blade, and 8 be cylindrical outer barrel, and 9 be second driving shaft, and 10 be that swing type restrains rotational flow dust-removing demister,
11 be spraying layer, and 12 be rotational flow dust-removing demisting unit, and 13 be sealing plate.
Embodiment
With reference to embodiment, the present invention will be further described, but protection scope of the present invention not limited to this：
Such as Fig. 1~5, a kind of swing type restrains rotational flow dust-removing demister, and the device (10) is located at spraying layer in absorption tower
(11) top, including the n rotational flow dust-removing demisting units (12) being disposed vertically, n >=1, the rotational flow dust-removing demisting unit
(12) cylindrical outer barrel (8), m eddy flow component are included, z can open and close type component, m >=1,0≤z≤1；
The eddy flow component includes several swirl vanes (2) and a central tube (3), and swirl vane (2) is with inclination
Even angle be centrally located in the annular section between cylinder (3) outer wall and cylindrical outer barrel (8) inwall；
It is described can open and close type component include the first power transmission shaft (1), swingle (4), fix bar (6) and sealing blade (7),
One end of described swingle (4) is fixedly connected with the first power transmission shaft (1), and the other end is connected with cylindrical outer barrel (8) and can edge
Cylindrical outer barrel (8) freely to rotate；One end of the fix bar (6) is fixedly connected with cylindrical outer barrel (8) inwall, the other end
It is connected with the first power transmission shaft (1) and can be freely rotated along the first power transmission shaft (1)；One end of described sealing blade (7) and rotation
Bar (4) is connected, and the other end is connected with fix bar (6).
When sealing blade (7) in opening, described sealing blade (7) is all rolled up in fix bar (6), rotation
Without sealing blade (7) on bar (4)；When sealing blade (7) in partially closed position, the first power transmission shaft of rotation (1) makes swingle
(4) rotated toward the direction away from fix bar (6), drive and rolled up sealing blade (7) rotary expansion in fix bar (6), and with
Cylindrical outer barrel (8) inwall and the first power transmission shaft (1) outer wall form partially enclosed；When sealing blade (7) in closure state, rotation
Bull stick (4) is reversely adjacent with fix bar (6), sealing blade (7), fix bar (6), swingle (4) and cylindrical outer barrel (8) inwall
With the first power transmission shaft (1) outer wall one complete annular space of formation.
Swing type tube bank rotational flow dust-removing demister is provided with some second driving shafts (9), described second driving shaft (9)
It is connected with the first power transmission shaft (1) in rotational flow dust-removing demisting unit (12), second driving shaft bar (9) can control the first power transmission shaft
(1) rotary motion.
Revolved between rotational flow dust-removing demisting unit (12) and between rotational flow dust-removing demisting unit (12) and absorption inner wall of tower
The upper and lower end face of stream dedusting demisting unit (12) is provided with sealing plate (13).
It is described can open and close type component be located at rotational flow dust-removing demisting unit (12) inward eddy component before, afterwards or two eddy flows
Between component.The bottom of described cylindrical outer barrel (8) is provided with spring bearing (5), described the first power transmission shaft (1) and support shaft
(5) are held to be connected.Inwall of the described swirl vane (2) with cylindrical outer barrel (8) by way of welding is connected.
(a), (b), (c) are respectively exhaust gases passes full open (blade contract fully), flue gas channel part closing (leaf in Fig. 4
Piece is partially opened) and sectional top view during exhaust gases passes contract fully (blade full open).
When exhaust gases passes full open (blade contract fully), sealing blade (7) is all rolled up in fix bar (6), is rotated
Without sealing blade (7) on bar (4), fix bar (6) is adjacent with swingle (4), such as shown in Fig. 4 (a)；
When needing flue gas channel part closing (blade-section opening), the first power transmission shaft of rotation (1) makes swingle (4)
Rotated toward the direction away from fix bar (6), sealing blade (7) rotary expansion in fix bar (6), and and cylinder are rolled up in drive
Shape outer barrel (8) inwall and the first power transmission shaft (1) outer wall forming portion enfeoffment closed walk, prevent flue gas from circulating, shown in such as Fig. 4 (b)；
With the gradually rotation of the first power transmission shaft (1), sealing blade (7) is constantly unfolded, when being finally all unfolded, rotation
Bull stick (4) is reversely adjacent with fix bar (6), such as shown in Fig. 4 (c), sealing blade (7), fix bar (6), swingle (4) and cylinder
Shape outer barrel (8) inwall and the first power transmission shaft (1) outer wall one complete annular space of formation, so as to reach closing target flue gas
The purpose of passage.
When needing to open exhaust gases passes, power transmission shaft (1) drives swingle (4) past close to fix bar toward opposite direction rotation
(6) direction is rotated, and sealing blade (7) constantly bounces back, and is rolled up in fix bar (6), closed channel is gradually decreased, finally sealed leaf
Piece (7) all bounces back and rolled up in fix bar (6), without sealing blade (7) on swingle (4), fix bar (6) and swingle (4)
Adjacent, exhaust gases passes are fully opened.
The function that exhaust gases passes are partly or entirely opened or closed so is achieved that, when effectively have adjusted load fluctuation
Flow velocity in demisting unit.
In order that sealing blade (7) effectively resilience, can set the elasticity member such as several springs or clockwork spring in fix bar (6)
Part, being stretched or shrinking and realize above-mentioned purpose by flexible member, the sealing blade can also using itself with certain elasticity
Material is realized.
In order that can be close together when fix bar (6) and adjacent swingle (4), it is to avoid occupy exhaust gases passes
(blade full closing state) or influence smoke impervious effect (blade full open state), can be in fix bar (6) and swingle (4)
Both sides add magnetic material and ferromagnetic material respectively.
Seal what blade (7) can be using monoblock, it would however also be possible to employ the combination of end to end multi-disc banding, material can be with
, also can be using nonmetallic fiber cloth etc. using metal steel strap.
Below by taking certain 135MW unit as an example, design air flow is 1000000m during 100% load3/ h, prior art is generally pressed
Peak load takes optimal flow rate (being usually 6~7m/s), for ease of description, takes velocity in pipes 6m/s, rotational flow dust-removing need to be arranged altogether
Demisting unit 368, i.e. n=368, when load is higher, demisting efficiency of dust collection is higher；When load reduction to 85% or so
When, air quantity now is also reduced to 850000m3/ h, velocity in pipes is down to 5.1m/s, and the centrifugal force that swirl vane is produced declines,
Demisting efficiency of dust collection is reduced；When load is further reduced to 60% or so, air quantity now is also reduced to 600000m3/ h, pipe
Interior flow velocity is down to 3.6m/s, and the centrifugal force that swirl vane is produced further declines, and demisting dust removing effects drastically deteriorate；This just occurs
Part of generating units operational excellence when at full capacity, and to effect extreme difference when underload, or even occur in that large area
Gypsum rain phenomenon.
Also there have part of generating units to be above-mentioned to avoid the occurrence of, and optimal flow rate is taken with less load, such as by 80%
Velocity in pipes is 6m/s when load, and in this case when load rises to 100%, velocity in pipes is 7.5m/s, and demisting is removed
Dirt efficiency is higher, but reentrainment is also very serious, causes overall efficiency relatively low；When load is down to 60%, velocity in pipes is
4.5m/s, the centrifugal force that swirl vane is produced declines, the reduction of demisting efficiency of dust collection；In this case only near designed load point
Efficiency preferably, deviates after load because reentrainment or centrifugal force decline can all cause the reduction of dedusting demisting efficiency.
The present invention still takes optimal flow rate by peak load, for ease of contrast, takes velocity in pipes 6m/s, need to arrange that eddy flow is removed altogether
Dirt demisting unit 368, i.e. n=368, while there is provided z open and close type component, it is assumed that the minimum of the target unit may load
For 50%, then z=0.5 × n=184, that is to say, that have and open and close type component is provided with 50% rotational flow dust-removing demisting unit.
When load is 100%, design air flow is 1000000m3/ h, open and close type component standard-sized sheet, velocity in pipes is 6m/s；
When load reduction is to 85% or so, air quantity now is also reduced to 850000m3/ h, can now close (100%-85%) × n
=55 (55.2, it is 55) individual open and close type component after rounding, such flue gas is only from the remaining 313 rotational flow dust-removing demistings being not turned off
Pass through in unit, velocity in pipes is 6.0038m/s, and velocity in pipes is basically identical during 100% load, demisting efficiency of dust collection is kept
It is stable；When load is further reduced to 60% or so, air quantity now is also reduced to 600000m3/ h, can now be closed
(100%-60%) × n=147 (147.2, be 147) individual open and close type component after rounding, such flue gas only from remaining 221 not
Pass through in the rotational flow dust-removing demisting unit of closing, velocity in pipes is 6.0054m/s, and velocity in pipes basic one during 100% load
Cause, demisting efficiency of dust collection keeps stable.It is so real by adjusting the folding quantity of open and close type component under different loading condictions
The stabilization of existing velocity in pipes, so as to ensure the centrifugal force of swirl vane, reaches the effect that efficiency keeps stable.
Certainly, above-mentioned is optimal implementation, i.e., each rotational flow dust-removing demisting unit list for being provided with open and close type component
Solely control, this just needs each unit to be provided with single actuator, and cost is higher.For reduce cost also can zonal control, than
184 open and close type components are divided into 8 areas' controls in such as above-mentioned embodiment, and each area connects 23 open and close type components, that is, led to respectively
Cross 8 second driving shafts respectively with 23 the first power transmission shafts to be connected, set actuator to control folding on every second driving shaft.
When load is 100%, 8 area's standard-sized sheets, velocity in pipes is 6m/s；When load reduction is to 85% or so, wherein 2 areas are closed
I.e. 46 open and close type components, velocity in pipes is 6.17m/s；When load is further reduced to 60% or so, wherein 6 areas are closed
I.e. 138 open and close type components, velocity in pipes is 6.25m/s；Flow velocity and optimum flow rate deviation are smaller, can preferably meet actual need
Will.
For the influence for the component stream field for farthest reducing closing passage, the method that can be closed using interruption packet,
I.e. every one or two, the passage closed is chosen every a row or two rows, is reached as far as possible uniformly, these are all this technology necks
Technology known to the personnel in domain.
Claims (9)
1. a kind of swing type restrains rotational flow dust-removing demister, it is characterised in that：The device (10) is located at spraying layer in absorption tower
(11) top, including the n rotational flow dust-removing demisting units (12) being disposed vertically, n >=1, the rotational flow dust-removing demisting unit
(12) cylindrical outer barrel (8), m eddy flow component are included, z can open and close type component, m >=1,0≤z≤1；
The eddy flow component includes several swirl vanes (2) and a central tube (3), and swirl vane (2) is with inclined angle
Degree is evenly distributed in the annular section between central tube (3) outer wall and cylindrical outer barrel (8) inwall；
It is described can open and close type component include the first power transmission shaft (1), swingle (4), fix bar (6) and sealing blade (7), it is described
One end of swingle (4) be fixedly connected with the first power transmission shaft (1), the other end is connected with cylindrical outer barrel (8) and can be along circle
Cylindricality outer barrel (8) is freely rotated；One end of the fix bar (6) is fixedly connected with cylindrical outer barrel (8) inwall, the other end and
One power transmission shaft (1) is connected and can freely rotated along the first power transmission shaft (1)；One end of described sealing blade (7) and swingle (4)
It is connected, the other end is connected with fix bar (6).
2. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Seal blade (7) place
When opening, described sealing blade (7) is all rolled up in fix bar (6), without sealing blade (7) on swingle (4)；
When sealing blade (7) in partially closed position, the first power transmission shaft of rotation (1) makes swingle (4) toward the side away from fix bar (6)
To rotation, sealing blade (7) rotary expansion in fix bar (6) is rolled up in drive, and with cylindrical outer barrel (8) inwall and first
Power transmission shaft (1) outer wall forms partially enclosed；When sealing blade (7) in closure state, swingle (4) is reverse with fix bar (6)
It is adjacent, sealing blade (7), fix bar (6), swingle (4) and cylindrical outer barrel (8) inwall and the first power transmission shaft (1) outer wall shape
Into a complete annular space.
3. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：The device is provided with some
Second driving shaft (9), described second driving shaft (9) is connected with the first power transmission shaft (1) in rotational flow dust-removing demisting unit (12),
Second driving shaft bar (9) can control the rotary motion of the first power transmission shaft (1).
4. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Described fix bar
(6) set and have elastic component on.
5. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Described fix bar
And the both sides of described swingle (4) are respectively equipped with magnetic material (6).
6. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Rotational flow dust-removing demisting list
In the upper of rotational flow dust-removing demisting unit (12) between first (12) and between rotational flow dust-removing demisting unit (12) and absorption inner wall of tower
Lower surface is provided with sealing plate (13).
7. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：It is described can open and close type group
Part is before rotational flow dust-removing demisting unit (12) inward eddy component, afterwards or between two eddy flow components.
8. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Described cylinder is outer
The bottom of cylinder (8) is provided with spring bearing (5), and described the first power transmission shaft (1) is connected with spring bearing (5).
9. swing type according to claim 1 restrains rotational flow dust-removing demister, it is characterised in that：Described swirl vane
(2) inwall with cylindrical outer barrel (8) by way of welding is connected.
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| CN201611233380.9A CN107051010A (en) | 2016-12-28 | 2016-12-28 | A kind of swing type restrains rotational flow dust-removing demister |
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| CN105056637A (en) * | 2015-08-04 | 2015-11-18 | 田鹏程 | Load adjustment method and device for cyclone dedusting demister |
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| CN205815311U (en) * | 2016-07-14 | 2016-12-21 | 山东晓沃环保防腐工程有限公司 | A kind of wet type multitube multi-layer rotational flow plate tower dust arrester |
| CN206350955U (en) * | 2016-12-28 | 2017-07-25 | 南京宇行环保科技有限公司 | A kind of swing type restrains rotational flow dust-removing demister |
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2016
- 2016-12-28 CN CN201611233380.9A patent/CN107051010A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056637A (en) * | 2015-08-04 | 2015-11-18 | 田鹏程 | Load adjustment method and device for cyclone dedusting demister |
| CN105854561A (en) * | 2016-05-10 | 2016-08-17 | 浙江天蓝环保技术股份有限公司 | Device and process for coordinative treatment of smoke desulfuration and dedusting |
| CN205815311U (en) * | 2016-07-14 | 2016-12-21 | 山东晓沃环保防腐工程有限公司 | A kind of wet type multitube multi-layer rotational flow plate tower dust arrester |
| CN206350955U (en) * | 2016-12-28 | 2017-07-25 | 南京宇行环保科技有限公司 | A kind of swing type restrains rotational flow dust-removing demister |
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