CN106178842A - The degree of depth of wet flue gas desulfurization tower removes mist dust arrester and method - Google Patents
The degree of depth of wet flue gas desulfurization tower removes mist dust arrester and method Download PDFInfo
- Publication number
- CN106178842A CN106178842A CN201610605494.5A CN201610605494A CN106178842A CN 106178842 A CN106178842 A CN 106178842A CN 201610605494 A CN201610605494 A CN 201610605494A CN 106178842 A CN106178842 A CN 106178842A
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- Prior art keywords
- flue gas
- depth
- degree
- mist dust
- dust arrester
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
-
- 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
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses the degree of depth of a kind of wet flue gas desulfurization tower except mist dust arrester and method, this degree of depth includes main tower except mist dust arrester, it is provided with cyclone in smoke exhaust barrel on described main tower and is located at the drop catcher above described cyclone, described drop catcher is constituted by the catching drip tube wall being positioned at above described cyclone with around the header tank that described barrel is peripheral, described catching drip tube wall is uniformly densely covered with and catches drip hole.The present invention have more flue gas be condensed into droplet and more droplet is removed, on flue gas smoothness impact little with can improve drop catcher efficiency and reduce flow of flue gas energy loss advantage, be conducive to improve fume emission quality.
Description
Technical field
The invention belongs to environment protection desulphurization field, particularly relate to the degree of depth of a kind of wet flue gas desulfurization tower except mist dust arrester and
Method.
Background technology
In the industrial production, the moisture in flue gas is not easy to get rid of totally, and its industrial pollutants are along with the moisture in flue gas
It is dispersed in air, causes serious industrial pollution, be degrading locality and the production of surrounding area and living environment, have impact on
Factory Building workman and nearby residents healthy.
Installing dehydration device additional to this end, there is people to expect on chimney, such as, the Chinese invention of publication number CN101829456A is special
Profit application discloses a kind of chimney dewatering device, is provided with the main tower of smoke inlet, the row on described main tower top including a sidepiece
Be provided with cyclone in chimney, the barrel above described cyclone offer and catches liquid longitudinal direction sealing, described in catch liquid longitudinal direction sealing
Periphery wall colouring is also for collecting the seal closure that the section of liquid is flute profile, and described section is that the seal closure bottom side of flute profile is provided with
Discharge opeing port.Although, this chimney dewatering device achieves the moisture removed in flue gas, is conducive to improving fume emission quality, preventing
Stop ring environment pollution.But, find in actual applications to have following defects that
1, do not have the position of fluid infusion longitudinal direction sealing at barrel, droplet cannot be collected, and droplet removal amount is few；
2, longitudinal sealing up/down perforation and for reaching reasonable collecting effect, the width of longitudinal direction sealing is the biggest,
This results in and has the droplet that is captured of part and escape from top, have impact on end of a period droplet removal effect.
3, flue gas smoothness is had and compares large effect by longitudinal sealing, on the one hand, make flue gas in flow process, the most all
Even, the bounce-back of flue fog drip can be caused, carry, have impact on except droplet effect, on the other hand so that pressure drop when flue gas flows through
Bigger, the energy loss of flow of flue gas is bigger.
Summary of the invention
The technical problem to be solved is to provide the degree of depth of a kind of wet flue gas desulfurization tower and removes mist dust arrester, with
Overcome the deficiency that prior art exists.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that:
The degree of depth of a kind of wet flue gas desulfurization tower removes mist dust arrester, including main tower, the smoke exhaust barrel on described main tower
Inside being provided with cyclone and be located at the drop catcher above described cyclone, described drop catcher is dripped by being positioned at catching above described cyclone
Barrel and the header tank around described barrel periphery are constituted, it is characterised in that: uniformly it is densely covered with on described catching drip tube wall and catches drip hole.
In a preferred embodiment of the invention, described in catch drip hole for circle, aperture is 50-70mm, described in catch drip hole and exist
On catching drip tube wall staggered；All gross areas catching drip hole account for the area 30-60% of catching drip tube wall.
Having catchment recess bottom described header tank, described catchment recess has discharge outlet.
In the improvement further of invention, the inwall of the top that described smoke exhaust barrel is positioned at described drop catcher is additionally provided with spiral
Extending the resistance water leg that at least 2 circles are above, the lower end outlet of described resistance water leg is communicated in described header tank.Use this knot
The resistance water leg of structure, the lower surface of resistance water leg can stop that the water droplet on inwall moves upward and is flowed into lower sheet resistance water leg
Groove in be collected, finally flow in the header tank of drop catcher.
The described resistance water leg exhaust opening from smoke exhaust barrel top is spirally extended to the water tank of drop catcher always.
In further improvement of the present invention, the chimney section between described main tower to cyclone to the youthful and the elderly 10 meters is to be formed
Condensation segment.By the length of the chimney section between increase main tower to cyclone to form condensation segment, in thus making chimney
The flue gas containing steam to arrive the heat exchanger time before cyclone and between cool exterior air longer so that the cigarette in chimney
Gas is condensed into droplet more such that it is able to condense in droplet by more flue dust, and it is same that so more droplet is removed
Time also been removed more flue dust.
In a preferred embodiment, described condensation segment is 10-30 rice.
It addition, present invention also offers the degree of depth of a kind of wet flue gas desulfurization tower except mist dust collection method, it is characterised in that:
First in main tower, with spray-absorption liquid, flue gas carried out spray-absorption, and by the demister in main tower to spray
Rear flue gas is carried out except mist, and the exiting flue gas droplet content making main tower is 75mg/Nm3；
Then condense to form more droplet to the saturated flue gas containing steam by condensation segment；
Subsequently will carry out eddy flow containing droplet flue gas by cyclone so that droplet gets rid of the catching drip tube to described drop catcher
Wall is also caught and is dripped catching after drip hole catches on barrel and enter header tank, the catchment recess bottom header tank assemble after from discharge outlet
Discharge.
The condensed fluid of other other droplet and end of being introduced into drop catcher upwards climbs along smoke exhaust barrel inwall, is climbing
During by resistance water leg lower surface stop later fall into lower section resistance water leg be collected, be the most also flowed into drop catcher
In header tank.
Use technique scheme, present invention have the advantage that
1, being uniformly densely covered with on catching drip tube wall and catch drip hole, flue gas flow field impact is weaker than the drop catcher of longitudinal sealing, this makes
Flue gas in flow process, more uniform and stable, decrease the bounce-back of water droplet in flue gas, carry, be correspondingly improved catch drip
The efficiency of device.Through numerical simulation calculation, in same entrance opening dimension drop catcher, use the most densely covered drop catcher catching drip hole
Arresting efficiency is higher by 10% than grooved drop catcher.
2, the drop catcher catching drip hole that uniformly gathers is little on flow of flue gas impact so that flue gas is pressed during flowing through drop catcher
Drop the drop catcher again smaller than longitudinal sealing (reducing 10-30%), decrease the energy loss of flow of flue gas.
3, uniformly it is densely covered with on catching drip tube wall to catch drip hole and add the length of condensation segment and makes more cigarette containing steam
Gas can be condensed into droplet and also make more droplet can be caught removal by drop catcher.
Therefore, the present invention have more flue gas be condensed into droplet and more droplet is removed, on flue gas smoothness affect
Little so that drop catcher efficiency can be improved and reduces the advantage of flow of flue gas energy loss, be conducive to improving fume emission quality.
Accompanying drawing explanation
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of drop catcher；
Fig. 3 is the structural representation of resistance water leg；
Fig. 4 is the flue gas flow rate scattergram of simulation experiment；
Fig. 5 is the flue gas pressures cloud charts of simulation experiment；
Fig. 6 is the flow of flue gas track schematic diagram of simulation experiment.
Detailed description of the invention
As it is shown in figure 1, the degree of depth of the wet flue gas desulfurization tower of the present invention is except mist dust arrester, including main tower 100, king-tower
Body 100 is connected above smoke exhaust barrel 200.It is provided with cyclone 300 in smoke exhaust barrel 200 and is located at the drop catcher above cyclone 300
400。
Cyclone 300 is made up of, when on the flue gas containing droplet the circumference array multiple guide vanes in smoke exhaust barrel 200
When rising, eddy flow will be formed through the water conservancy diversion of guide vane.
Shown in Fig. 2, drop catcher 400 is by the catching drip tube wall 410 being positioned at above cyclone 300 with around catching drip tube wall
The header tank 420 of 410 peripheries is constituted.
Uniformly it is densely covered with on catching drip tube wall 410 and catches drip hole 411.This catch drip hole 411 can be circle, triangle, square or
Other shape of person.In the present embodiment, drip hole 411 is caught for circle.
Catch drip hole 411 staggered on catching drip tube wall 410.The aperture catching drip hole 411 is 50-70mm, catches drip hole 411
The gross area accounts for area (cloth porosity) 30-60% of catching drip tube wall.
Having catchment recess 421 bottom header tank 420, the bottom of catchment recess 421 has discharge outlet 422.
Again as it is shown in figure 1, be additionally provided with spiral extension at least 2 circle on the inwall of smoke exhaust barrel 200 top that is positioned at drop catcher 300
Above resistance water leg 500.In this embodiment, the resistance water leg 500 exhaust opening from smoke exhaust barrel 200 top is spirally extended to always
The water tank 420 of drop catcher 300.As it is shown on figure 3, resistance water leg 500 by spiral welded in the angle steel system of smoke exhaust barrel 200 inwall
Become.Resistance water leg 500 lower end outlet is communicated in header tank 420, and so, the water that resistance water leg 500 is collected can flow into
Header tank 420 is discharged.Use such structure, the lower surface of resistance water leg 500 can stop the water droplet on smoke exhaust barrel 200 inwall
It is collected in moving upward and being flowed into the groove of lower sheet resistance water leg, finally flows in the header tank of drop catcher.
Smoke exhaust barrel 200 is made up of carbon steel cylinder and the interior glass flake being lining in carbon steel cylinder inner wall.
It addition, the chimney section between main tower 100 to cyclone 300 to the youthful and the elderly 10 meters to form condensation segment 210.In this reality
Executing in example, condensation segment 210 is 12 meters.Cold to be formed by increasing the length of the chimney section between main tower 100 to cyclone 300
Solidifying section, thus makes the flue gas containing steam in chimney when arriving the heat exchange before cyclone and between cool exterior air
Between longer so that the flue gas in chimney is condensed into droplet more such that it is able to condense in droplet by more flue dust, this
The more droplet of sample also been removed more flue dust while removing.
Being exactly more than the degree of depth demister of the wet flue gas desulfurization tower of the present invention, its working method is as follows:
First in main tower, with spray-absorption liquid, flue gas carried out spray-absorption, and by the demister in main tower to spray
Rear flue gas is carried out except mist, and the exiting flue gas droplet content making main tower is 75mg/Nm3；
Then condense to form more droplet to the saturated flue gas containing steam by condensation segment；
Subsequently by cyclone, the flue gas containing droplet is carried out eddy flow so that droplet gets rid of and drips to catching of described drop catcher
Barrel is also caught and is dripped catching after drip hole catches on barrel and enter header tank, the catchment recess bottom header tank assemble after from draining
Mouth is discharged；
The condensed fluid of other other droplet and end of being introduced into drop catcher upwards climbs along smoke exhaust barrel inwall, is climbing
During by resistance water leg lower surface stop later fall into lower section resistance water leg be collected, be the most also flowed into drop catcher
In header tank.
Simulation experiment
It is real that the present invention uses DPM model (discrete items motion model) and k-e model (fluid turbulent motion model) to do simulation
Test.
Under this experimental simulation mist droplet particle size 60um except fog effect, and result is carried out computational analysis.
The a diameter of 2800mm of catching drip tube wall of the drop catcher that this simulation experiment uses, height is 2000mm；Catching of drop catcher
Drip hole diameter 60mm, cloth porosity is 35%；Flue gas flow rate in drop catcher is set as 15m/s.
Gas approach: use air approximation to replace；
Import water droplets particle diameter: 60um；
Import water droplet mass flow: 5.8kg/s.
Result of calculation
1, velocity flow profile
As shown in Figure 4, the degree of depth is evenly distributed except the flue gas flow rate in mist dust arrester, and after spiral board, droplet is revolved
Flow to drop catcher trap.
2, pressure distribution
As it is shown in figure 5, the degree of depth is approximately less than 150Pa except the inlet outlet pressure differential of mist dust arrester, the pressure loss is little.
3, flow trace
As shown in Figure 6, the droplet particles in flue gas, through rotational flow plate defroster, enters drop catcher, and big portion uniformly and stably
Divide and trapped by drop catcher.
Conclusion
This degree of depth except mist dust arrester is under 60um droplet operating mode, overall pressure drop about 150Pa, arresting efficiency about 80.3%.
Claims (9)
1. the degree of depth of wet flue gas desulfurization tower removes a mist dust arrester, including main tower, in the smoke exhaust barrel on described main tower
Being provided with cyclone and be located at the drop catcher above described cyclone, described drop catcher is by the catching drip tube being positioned at above described cyclone
Wall and the header tank around described barrel periphery are constituted, it is characterised in that: uniformly it is densely covered with on described catching drip tube wall and catches drip hole.
The degree of depth of wet flue gas desulfurization tower the most according to claim 1 removes mist dust arrester, it is characterised in that catches described in: and drips
Hole is circular, and aperture is 50-70mm, described in catch drip hole staggered on catching drip tube wall；All gross areas catching drip hole account for catches
Drip the area 30-60% of barrel.
The degree of depth of wet flue gas desulfurization tower the most according to claim 1 removes mist dust arrester, it is characterised in that catchment described in:
Bottom portion has catchment recess, and described catchment recess has discharge outlet.
The degree of depth of wet flue gas desulfurization tower the most according to claim 1 removes mist dust arrester, it is characterised in that: described smoke evacuation
Being additionally provided with the resistance water leg that spiral extension at least 2 circle is above on the inwall of the top that cylinder is positioned at described drop catcher, described resistance is catchmented
The lower end outlet of groove is communicated in described header tank.
The degree of depth of wet flue gas desulfurization tower the most according to claim 4 removes mist dust arrester, it is characterised in that: described resistance collection
The tank exhaust opening from smoke exhaust barrel top is spirally extended to the water tank of drop catcher always.
The degree of depth of wet flue gas desulfurization tower the most according to claim 1 removes mist dust arrester, it is characterised in that: described king-tower
Body to the chimney section between cyclone to the youthful and the elderly 10 meters to form condensation segment.
The degree of depth of wet flue gas desulfurization tower the most according to claim 7 removes mist dust arrester, it is characterised in that: described condensation
Section is 10-30 rice.
8. the degree of depth of a wet flue gas desulfurization tower removes mist dust collection method, it is characterised in that: use the wettest
The degree of depth of method fume desulfurizing tower is except mist dust arrester and uses following steps:
First in main tower, with spray-absorption liquid, flue gas carried out spray-absorption, and by the demister in main tower to cigarette after spray
Gas is carried out except mist, and the exiting flue gas droplet content making main tower is 75mg/Nm3；
Then condense to form more droplet to the saturated flue gas containing steam by condensation segment；
Subsequently will carry out eddy flow containing droplet flue gas by cyclone so that droplet gets rid of to the catching drip tube wall of described drop catcher also
Catching after drip hole catches of being caught on a barrel enters header tank, and the catchment recess bottom header tank is arranged from discharge outlet after assembling
Go out.
The degree of depth of wet flue gas desulfurization tower the most according to claim 8 removes mist dust collection method, it is characterised in that: other does not enters
The condensed fluid of other droplet and end of entering drop catcher upwards climbs along smoke exhaust barrel inwall, by resistance water leg during climbing
Lower surface stop later fall into lower section resistance water leg be collected, be the most also flowed in the header tank of drop catcher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605494.5A CN106178842A (en) | 2016-07-28 | 2016-07-28 | The degree of depth of wet flue gas desulfurization tower removes mist dust arrester and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605494.5A CN106178842A (en) | 2016-07-28 | 2016-07-28 | The degree of depth of wet flue gas desulfurization tower removes mist dust arrester and method |
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| Publication Number | Publication Date |
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| CN106178842A true CN106178842A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610605494.5A Pending CN106178842A (en) | 2016-07-28 | 2016-07-28 | The degree of depth of wet flue gas desulfurization tower removes mist dust arrester and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159850A (en) * | 2017-12-25 | 2018-06-15 | 刘毅 | A kind of cold stripper of water mist fluid and dehumidifying demister and its dehumidifying defogging method |
| CN115382355A (en) * | 2022-09-22 | 2022-11-25 | 阳光氢能科技有限公司 | Gas washing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829456A (en) * | 2010-05-21 | 2010-09-15 | 福建鑫泽环保设备工程有限公司 | Chimney dewatering device |
| CN104307335A (en) * | 2014-10-16 | 2015-01-28 | 太仓东能环保设备有限公司 | Novel packless desulfurizing tower |
| CN204227774U (en) * | 2014-10-08 | 2015-03-25 | 新昌县宏宇制冷有限公司 | A kind of screw type gas-liquid separator |
| CN105477967A (en) * | 2015-12-25 | 2016-04-13 | 史玉库 | Wet type flue gas desulfurization dust remover |
| CN105709585A (en) * | 2016-01-27 | 2016-06-29 | 广西博世科环保科技股份有限公司 | Double-tower efficient wet desulphurization device |
-
2016
- 2016-07-28 CN CN201610605494.5A patent/CN106178842A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829456A (en) * | 2010-05-21 | 2010-09-15 | 福建鑫泽环保设备工程有限公司 | Chimney dewatering device |
| CN204227774U (en) * | 2014-10-08 | 2015-03-25 | 新昌县宏宇制冷有限公司 | A kind of screw type gas-liquid separator |
| CN104307335A (en) * | 2014-10-16 | 2015-01-28 | 太仓东能环保设备有限公司 | Novel packless desulfurizing tower |
| CN105477967A (en) * | 2015-12-25 | 2016-04-13 | 史玉库 | Wet type flue gas desulfurization dust remover |
| CN105709585A (en) * | 2016-01-27 | 2016-06-29 | 广西博世科环保科技股份有限公司 | Double-tower efficient wet desulphurization device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159850A (en) * | 2017-12-25 | 2018-06-15 | 刘毅 | A kind of cold stripper of water mist fluid and dehumidifying demister and its dehumidifying defogging method |
| CN108159850B (en) * | 2017-12-25 | 2019-12-06 | 刘毅 | Water mist fluid cold stripper, dehumidification and demisting device and dehumidification and demisting method thereof |
| CN115382355A (en) * | 2022-09-22 | 2022-11-25 | 阳光氢能科技有限公司 | Gas washing device |
| CN115382355B (en) * | 2022-09-22 | 2023-11-28 | 阳光氢能科技有限公司 | Gas washing device |
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Application publication date: 20161207 |