CN109908619A - A kind of method and apparatus of tubular type condensation dehydrating demisting - Google Patents
A kind of method and apparatus of tubular type condensation dehydrating demisting Download PDFInfo
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- CN109908619A CN109908619A CN201910148808.7A CN201910148808A CN109908619A CN 109908619 A CN109908619 A CN 109908619A CN 201910148808 A CN201910148808 A CN 201910148808A CN 109908619 A CN109908619 A CN 109908619A
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Abstract
The device of tubular type condensation dehydrating demisting, including gas processer shell, cooling tube or with finned cooling pipe interlock, coil or turn back arrangement and the cooling water manifold of tubular demister, demister or pipe, wash tub pipe of the Venturi tube structure that are formed, tubular demister is equipped with the cooling water manifold of the demister cooling water inlet of connection, demister or pipe, demister cooling tube, demister cooling water outlet；Demister and gas inlet and outlet are equipped in gas processer shell；The flushing pipe of demister is placed in the top of tubular demister.It solves the problems, such as that the smoke evacuation visual effect of gas cleaning plant is bad to reduce environmental pollution, also it can further improve cleanser recovery utilization rate, moisture in gas recovery, reduce the water consumption of Wet purifier, the Technical Economy and environment protecting for improving device, are particularly suitable for the deep treatment of flue gas desulfurization neat stress.
Description
Technical field:
The invention belongs to field of environment protection, are related to the device of wet type gas purification, especially tubular type condensation dehydrating demisting
Method and apparatus, the deep treatment especially suitable for smoke-gas wet desulfurization flue gas.
Background technique:
Wet type gas purifies high-efficient, reliable for operation.However, absorbing liquid is all entrained with after wet processed in neat stress
The polluters such as drop, flue dust, absorbent.In order to reduce the discharge of these polluters, present technique generally uses layer 2-3
Demister handles neat stress, and this scheme is only capable of the drop of 20 μm of removal or more the absorbing liquid of partial size, to granule
The fine particulates of diameter have little effect.The gas of discharge is difficult to spread in smoke, mists and clouds such as dignified white, blues, forms longer cigarette
Plumage causes serious visual pollution, directly constitutes pollution to surrounding enviroment, equipment, these gas pollutants are also to be concerned
One of the origin cause of formation of haze weather.This problem is increasingly subject to the attention of desulfurization environmental protection sector, and country is to industrial air pollution
Object discharge, which does not require nothing more than, reaches minimum discharge level, and there are also local requirements to eliminate the white pollution that water vapour is eliminated in gas discharge.
So efficiently removing fine particulates and water mist technology attract extensive attention.
Summary of the invention
It is an object of the present invention to provide a kind of method and apparatus of tubular type condensation dehydrating demisting, utilize recirculated cooling water
Cool down to gas, using the principle of gas temperature decline then water vapor pressure decline, make water recovery water in gas and
Water in gas recovery；And using the process of water recovery using fine particulates such as dirt as the mechanism of the nuclei of condensation, in water vapour
Simultaneously increase fine particulates partial size coalescence in condensation recycling, is easy to the trappings such as washed liquid, demister, improves fine particle
Object removal effect；The effect of coalescence, demisting is improved using the Venturi tube structure that tubular demister is formed simultaneously.It is net by the device
Change the flue dust in gas, absorb drop, absorbing liquid drop etc., so that the smoke evacuation visual effect for solving gas cleaning plant is bad
Problem reduces environmental pollution, and also can further improve cleanser recovery utilization rate, and the moisture in gas recovery reduces wet cleaning
The water consumption of device improves the Technical Economy and environment protecting of device.
The technical scheme is that a kind of device of tubular type condensation dehydrating demisting, including gas processer shell, cooling
The tubular demister of pipe or the Venturi tube structure of interlock with finned cooling pipe, coil or turn back arrangement and formation, disengaging water manifold
Or pipe, wash tub pipe, tubular demister are equipped with the cooling water manifold of the demister cooling water inlet of connection, demister or pipe, demisting
Device cooling tube, demister cooling water outlet；Demister and gas inlet and outlet are equipped in gas processer shell；The flushing of demister
Pipe is placed in the top of tubular demister.
Demister cooling water manifold (pipe) may include demister cooling water-inlet header (pipe) and demister cooling water outlet connection
Case (pipe).
Further, cooling tube or Venturi tube structure that is evenly distributed with finned cooling pipe and being formed.Water flow velocity in cooling tube
0.3m/s-2.5m/s, the cooling pipe diameter that the outer tube wall spacing L of coplanar layer cooling tube is 0.5 times -1.5 times.
Further, cooling tube (can be with finned cooling pipe), which interlocks or coils or turn back, is arranged in the text of plane layer formation
1 layer of -4 layer plane layer is arranged in the tubular demister of structure in mound；The vertical interval H of the outer tube wall of adjacent two layers cooling tube is 0.5
- 4 times of cooling pipe diameter again.
Further, cooling tube is arranged using baffling form or cocurrent form, baffling form and with flue gas adverse current.
Further, tubular type condensation dehydration demister is located at the later process of gas purifying equipment, and gas is set through gas purification
Enter tube type cold after standby preliminary wet purification to coagulate dehydration demister (circulation condensed water), gas is cooled, and pipe is cooling to generate condensation
Water, while the demister of cooled pipe composition is dehydrated, discharges after the subsequent demisting of the gas vent 8 of demister entrance after demisting；
The recirculated cooling water of low temperature enters the water-inlet header (pipe) of tubular type condensation dehydration demister, enters back into cooling tube and cools down cigarette indirectly
Gas, recirculated cooling water enters water outlet header (pipe) after promoting temperature by flue gas, then removes the cooler outside system again from water manifold out
It is recycled after cooling.
A kind of cooling tube of the method and apparatus of tubular type condensation dehydrating demisting uses baffling form or cocurrent (simultaneously
Connection) form, preferably baffling form and with flue gas adverse current arrange.Or spiral tube flowing.
A kind of gas of the method and apparatus of tubular type condensation dehydrating demisting is after tubular type condensation dehydrating demisting cooling
Gas temperature declines 1 DEG C -30 DEG C, 2% or more vapour content decline in gas.
Tubular type condensation dehydration demister of the invention can be placed in main purification device, can also be by the process sequence of this device
Each section is placed in outside main purification device.Venturi tube structure is exactly that gas first shrinks again widened procedure structure.Two pipes are simultaneously
Column, gas flow through, and are formed Venturi tube structure, this structure is beneficial to flue gas condensing coalescence.By between pipe
Distance and pipe diameter adjust contraction and the sampling factor of Venturi tube structure, and shrinking percentage is smaller, and flue gas resistance is bigger, and effect increases
Greatly, so there is a suitable section.
The beneficial effects of the present invention are: the present invention will cool down, coagulating technique is combined with inertia force demisting technology, thus
Reduce gas droplet content, total dust content and pernicious gas content, realize it is ultra-clean discharge, be dehydrated, disappear white requirement.The present invention
Cooled down using recirculated cooling water to gas, using the gas temperature decline principle that then water vapor pressure declines, makes water in gas
Steam condensation water in gas recovery for water；And using the process of water recovery using fine particulates such as dirt as the nuclei of condensation
Mechanism increases fine particulates partial size coalescence simultaneously in water recovery recycling, is easy to washed liquid, demister etc. and catches
Collection improves fine particulates removal effect；The effect of coalescence, demisting is improved using the Venturi tube structure that tubular demister is formed simultaneously
Fruit.The present invention include cooling tube (can be with fin) be staggered and the tubular demister of the Venturi tube structure that is formed, Inlet and outlet water connection
The composition such as case (pipe), wash tub pipe.Pass through acidic materials, flue dust, the absorption drop, absorbing liquid drop in the device purification gas
Deng, and the moisture in condensing recovery gas, to solve the problems, such as the bad reduction ring of the smoke evacuation visual effect of gas cleaning plant
Border pollution, also can further improve cleanser recovery utilization rate, the moisture in gas recovery, the water for reducing Wet purifier disappears
Consumption, improves the Technical Economy and environment protecting of device, is particularly suitable for the deep treatment of flue gas desulfurization neat stress.
The present invention achievees the purpose that gas purifies again in simpler and more direct mode, to effectively reduce acid in neat stress
Matter, flue dust, droplet, water vapour equal size；Gas cleaning plant is set to meet more maximum discharge requirement.Present invention reduces desulfurization fumes
In entrainment, reduce the content of absorbing liquid and absorbent, further decrease the content of flue dust, steam, effectively improve
Influence of the production to surrounding enviroment, improves the recovery utilization rate of absorption cleaning agent, water, to improve the economy of operation.
Detailed description of the invention
Fig. 1-Fig. 4 is schematic structural view of the invention.
Fig. 1 is that the tubular type of cooling tube deflector type arrangement condenses dehydration demister.
Fig. 2 is that the tubular type of cooling tube parallel type arrangement condenses dehydration demister.
Fig. 3 is cooling tube section layout drawing.
Fig. 4 is cooling tube top view.
Specific embodiment
A kind of method and apparatus of tubular type condensation dehydrating demisting of the present invention, are staggered by cooling tube (can be with fin)
And the composition such as tubular demister, disengaging water manifold (pipe), wash tub pipe of the Venturi tube structure formed.
Structure of the invention is shown in attached drawing 1- Fig. 4；The invention mainly comprises 1- demister cooling water inlet, 2- demister it is cooling into
Water manifold (pipe), 3- demister cooling tube, 4- demister cooling water outlet header (pipe), 5- demister cooling water outlet, 6- gas
Processor shell, the gas feed of 7- demister, the gas vent of 8- demister, the flushing pipe of 11- demister.
Specific composition are as follows: the tubular type condensation dehydration demister is located at the postorder of gas purifying equipment, and gas is net through gas
Enter the solidifying dehydration demister gas feed 7 of tube type cold after changing the preliminary wet purification of equipment, gas is cooled, and pipe 3 is cooling to generate condensation
Water, while the demister of cooled pipe composition is dehydrated, discharges after the subsequent demisting of the gas vent 8 of demister entrance after demisting.
The recirculated cooling water 1 of the low temperature of the method and apparatus of the tubular type condensation dehydrating demisting enters tubular type condensation dehydration
The water-inlet header (pipe) 2 of demister, enters back into the indirect cooled flue gas of cooling tube 3, and recirculated cooling water is laggard by flue gas promotion temperature
Enter out water manifold (pipe) 4, then is recycled after going the cooler outside system to cool down again from water manifold out.Such as it is dropped by heat pump
Temperature.
The cooling tube (can be with fin) of the method and apparatus of the tubular type condensation dehydrating demisting is staggered and is formed
Venturi tube structure.Water flow velocity 0.3m/s-2.5m/s in cooling tube, the outer tube wall spacing of same layer cooling tube are 0.5 times -1.5 times
Cooling pipe diameter, the cooling pipe diameter that the vertical interval of the outer tube wall of adjacent two layers cooling tube is 0.5 times -2 times.Cooling tube setting
2 layers -4 layers.
The cooling tube of the method and apparatus of the tubular type condensation dehydrating demisting uses baffling form or cocurrent form, preferably
Baffling form and with flue gas adverse current arrange.
The gas of the method and apparatus of tubular type condensation dehydrating demisting gas after tubular type condensation dehydrating demisting cooling
Temperature declines 1 DEG C -30 DEG C, 2% or more vapour content decline in gas.
Present example:
Wet desulphurization tail gas for 470t/h boiler smoke purifies again, and processing exhaust gas volumn is 600000m3/ h, desulfurization
SO in import flue gas2Content is 3000mg/Nm3, dust content 13mg/Nm3.Wet-method desulfurized fume amount is 630000m3/ h, temperature
It is 51 DEG C, relative humidity 95%, absolute humidity, that is, vapour content 12.8%, content of sulfur dioxide 33mg/Nm3, dust content
11mg/Nm3, droplet content 5000mg/Nm3.Neat stress carries out dehydrating demisting purification using the present invention after wet desulphurization.
Method and structure:
The tubular type condensation dehydration demister of desulfidation tail gas dehydrating demisting is shown in attached drawing 1, Fig. 3, Fig. 4.
The tubular type condensation dehydration demister is located at the postorder of desulfurizing and purifying device spray absorption, and gas is net through processed gas
Enter the solidifying dehydration demister gas feed 7 of tube type cold after changing the preliminary wet type desulfurizing purification of equipment, gas is cooled, and pipe 3 is cooling to be generated
Condensed water droplet increases after carrying out coalescence with fine particulates such as dirt, aerosols in gas in cold water water mist drop forming process
The partial size of fine particulates is in this way easy in formation while after the demister dehydration of cooled pipe composition, demisting from demisting
The gas vent 8 of device discharges after entering subsequent demisting.
The recirculated cooling water 1 of the low temperature enters the water-inlet header (pipe) 2 of tubular type condensation dehydration demister, enters back into cold
But the indirect cooled flue gas of pipe 3, recirculated cooling water enters water outlet header (pipe) 4 after promoting temperature by flue gas, then goes from water manifold out
Cooler outside system is recycled after cooling down again.
The cooling tube be can finned 316L material round tube, cooling tube is staggered and the venturi knot that is formed
Structure.Water flow velocity 0.5m/s in cooling tube, recirculated cooling water 1200m3/ h, the cooling tube of one layer of 37 diameter 150mm, same layer are cold
But cooling pipe diameter, that is, 150mm that the outer tube wall spacing of pipe is 1 times, the vertical interval of the outer tube wall of adjacent two layers cooling tube are
1.5 times of cooling pipe diameter, that is, 225mm.Cooling tube is arranged 3 layers.
The cooling tube is arranged using baffling form and with flue gas adverse current.
Gas gas temperature after tubular type condensation dehydrating demisting cooling declines 3 DEG C, and water vapour is absolutely wet in gas
Degree is reduced to 11.1%, decline 13.3%.
Baffling form and with flue gas adverse current arrange: with flue gas adverse current arrange, be exactly the water at low temperature now Fig. 1 shows as
From top to down, water inlet pipe is upper, and outlet pipe is under.Flue gas from it is lower and to air inlet is under, and gas outlet is upper.It refers in particular to more
It is so laid out when layer pipe.
As a result: effect: being vented droplet content 45mg/m in 8 neat stress3, dust content 7mg/Nm3, sulfur dioxide 21mg/
Nm3, recycle-water 6700kg/h.
Above embodiments do not limit the present invention in any way, all to be made in a manner of equivalent transformation to above embodiments
Other improvement and application, belong to protection scope of the present invention.
Claims (7)
1. a kind of device of tubular type condensation dehydrating demisting, it is characterised in that: including gas processer shell, cooling tube or with fin
Cooling tube interlock, coil or turn back arrangement and formed the cooling water manifold of the tubular demister of Venturi tube structure, demister or pipe,
Wash tub pipe, tubular demister is equipped with the cooling water manifold of the demister cooling water inlet of connection, demister or pipe, demister are cooling
Pipe, demister cooling water outlet；Demister and gas inlet and outlet are equipped in gas processer shell；The flushing pipe of demister is placed in
The top of tubular demister.
2. the device of tubular type condensation dehydrating demisting according to claim 1, it is characterised in that: cooling tube is cooling with fin
Pipe arranges the Venturi tube structure to be formed.Water flow velocity 0.3m/s-2.5m/s in cooling tube, the outer tube wall spacing of coplanar layer cooling tube
The cooling pipe diameter that L is 0.5 times -1.5 times.
3. the device of tubular type condensation dehydrating demisting according to claim 1, it is characterised in that: cooling tube is cooling with fin
Pipe, which interlocks or coils or turn back, is arranged in the tubular demister of the Venturi tube structure of plane layer formation, and 1 layer -4 layers of setting flat
Surface layer；The cooling pipe diameter that the vertical interval H of the outer tube wall of adjacent two layers cooling tube is 0.5 times -4 times.
4. the device of tubular type condensation dehydrating demisting according to claim 1, it is characterised in that: cooling tube uses baffling form
Or cocurrent form, baffling form and with flue gas adverse current arrange.
5. a kind of method that the device of the condensation of tubular type described in one of -4 according to claim 1 dehydrating demisting carries out dehydrating demisting,
Its special piece is that tubular type condensation dehydration demister is located at the later process of gas purifying equipment, and gas is preliminary through gas purifying equipment
Enter tube type cold after wet purification to coagulate dehydration demister (circulation condensed water), gas is cooled, and pipe is cooling to generate condensed water, simultaneously
The demister of cooled pipe composition is dehydrated, discharges after the subsequent demisting of the gas vent 8 of demister entrance after demisting；Low temperature follows
Ring cooling water enters the water-inlet header or union of tubular type condensation dehydration demister, enters back into the indirect cooled flue gas of cooling tube, recycles
Cooling water is promoted by flue gas enters water outlet header or union after temperature, then after going the cooler outside system to cool down again from water manifold out
It is recycled.
6. according to the method described in claim 5, it is characterized in that, gas is after tubular type condensation dehydrating demisting cooling under gas temperature
1 DEG C -30 DEG C are dropped, 2% or more vapour content decline in gas.
7. according to the method described in claim 5, it is characterized in that, a kind of method and apparatus of described tubular type condensation dehydrating demisting
Cooling tube use baffling form or cocurrent, that is, parallel form, baffling form and with flue gas adverse current arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910148808.7A CN109908619A (en) | 2019-02-28 | 2019-02-28 | A kind of method and apparatus of tubular type condensation dehydrating demisting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910148808.7A CN109908619A (en) | 2019-02-28 | 2019-02-28 | A kind of method and apparatus of tubular type condensation dehydrating demisting |
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| CN109908619A true CN109908619A (en) | 2019-06-21 |
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| CN201910148808.7A Pending CN109908619A (en) | 2019-02-28 | 2019-02-28 | A kind of method and apparatus of tubular type condensation dehydrating demisting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112263980A (en) * | 2020-10-21 | 2021-01-26 | 贵州省欣紫鸿药用辅料有限公司 | Reaction kettle, reaction system and reaction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188888A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof |
| CN203017796U (en) * | 2013-01-09 | 2013-06-26 | 永清环保股份有限公司 | Dehumidifying defogging device of moisture in condensed smoke |
-
2019
- 2019-02-28 CN CN201910148808.7A patent/CN109908619A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188888A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof |
| CN203017796U (en) * | 2013-01-09 | 2013-06-26 | 永清环保股份有限公司 | Dehumidifying defogging device of moisture in condensed smoke |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112263980A (en) * | 2020-10-21 | 2021-01-26 | 贵州省欣紫鸿药用辅料有限公司 | Reaction kettle, reaction system and reaction method |
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Application publication date: 20190621 |