CN103920371B - A kind of absorption tower and flue gas treating process thereof - Google Patents
A kind of absorption tower and flue gas treating process thereof Download PDFInfo
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- CN103920371B CN103920371B CN201410176580.XA CN201410176580A CN103920371B CN 103920371 B CN103920371 B CN 103920371B CN 201410176580 A CN201410176580 A CN 201410176580A CN 103920371 B CN103920371 B CN 103920371B
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- liquid
- gas
- flue gas
- absorption
- electric demister
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 68
- 239000003546 flue gas Substances 0.000 title claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 230000002745 absorbent Effects 0.000 claims abstract description 13
- 239000002250 absorbent Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 62
- 239000007789 gas Substances 0.000 claims description 23
- 238000006477 desulfuration reaction Methods 0.000 claims description 13
- 230000023556 desulfurization Effects 0.000 claims description 13
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 3
- 239000012717 electrostatic precipitator Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000443 aerosol Substances 0.000 abstract description 7
- -1 steam Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 239000003517 fume Substances 0.000 description 4
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of absorption tower, including absorption plant, at the top attachment cooling humidification device of absorption plant, at the top attachment electric demister of cooling humidification device.The present invention also provides for a kind of flue gas treating process, and pending flue gas, first via absorption plant, then enters cooling humidification device, after discharge through the outlet of electric demister.Using the absorption tower of the present invention, nuisance particle in flue gas uses after indirectly increasing cold humidification and is sufficiently reclaimed in electric demister so that the particle of no longer band aerosol, steam, absorbent etc. in the flue gas of discharge；Stop the source of generation of haze, and flow direction of material is simple and direct, reduce water and the waste of absorbent.
Description
Technical field
The present invention relates to a kind of absorption tower for fume treatment and flue gas treating process thereof, this absorption tower has electric demister.
Background technology
Absorption tower in existing desulfuring and denitrifying apparatus i.e. desulfurizing tower, absorption temperature is mostly between 40 DEG C～60 DEG C, and desulfurizing tower is generally void tower and absorbs and packed tower absorption two kinds, and some top, absorption tower is provided with Despumation device.Processed flue gas directly empties from top after absorption tower absorbs.
When flue gas after above-mentioned traditional absorption tower processes directly empties, also with more particulate matter in efflux gas.As: the byproduct particles etc. that the dense colloid of gas of the most absorbent organic matter formation, saturated steam (having formed water smoke during outlet), little particle absorbing liquid, solid absorbent residue, sweetening process produce.
At the flue gas that the chimney of existing flue gas desulfurization device ejects, may often be such that Dark smoke billows, these dense smoke is often based on water smoke, but while discharging water smoke, other particle has been mingled with wherein, and these flue gases are one of key factors forming haze.Especially in the area that some power plant and steel mill are more, discharged gas fume amount is very big, and these discharged gas fumes meet with other particle in air, strengthen the formation of haze.
The most more efficiently process flue gas so that it is reach discharge standard, then be problem to be solved by this invention.
Summary of the invention
It is an object of the invention to, for the flue gas that existing flue gas desulfurization device is discharged contains substantial amounts of water smoke and aerosol field trash, then haze is formed, have a strong impact on the situation of air quality, a kind of novel absorption tower (desulfurizing tower) and flue gas treating process thereof are provided, water smoke in particulate matter after desulfurization absorbs and flue gas and the content of other nuisance that is mingled with are reduced as far as possible, the water consumption reduction of system, the various nuisances carried secretly and particulate matter reduce, to reach the purpose of clean atmosphere.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
On the one hand, the present invention provides a kind of absorption tower, including absorption plant, at the top attachment cooling humidification device of absorption plant, at the top attachment electric demister of cooling humidification device.
The i.e. absorption tower of the present invention includes three sections, absorption plant (desulfurization absorption plant), the cooling humidification device at middle part and the electric demister at top of bottom.The i.e. gas-liquid of cooling humidification device separates humidifying device, and electric demister is High-speed Electric demister.Electric demister top arranges exhanst gas outlet.
Further, arranging the first connecting port between described absorption plant and cooling humidification device, arrange the second connecting port between described cooling humidification device and electric demister, described first, second connecting port uses flange connection or welding manner.
Described absorption plant includes liquid distributing device, desulfurization absorber portion and liquid storage section the most successively, and described liquid distributing device is provided with circulating absorption solution import, is provided with circulating absorption solution outlet at liquid storage section, and the bottom of described desulfurization absorber portion is provided with gas approach.
Described absorption plant also includes foam-removing layer, if absorption tower is packed tower, also includes packing layer.
Described cooling humidification device, by the way of indirect heat exchange and gas-liquid separation, realizes cooling humidification.Specifically include: upper gas-liquid demarcation strip, lower gas-liquid demarcation strip, close on and at gas-liquid demarcation strip, cooling liquid outlet is set, close on and at lower gas-liquid demarcation strip, cooling liquid inlet is set, many pipelines are set between upper and lower gas-liquid demarcation strip, the top of described pipeline arranges humidifying liquid import, external humidifying liquid.
Described electric demister uses common High-speed Electric demister, including electricity except mist cylinder, upper and lower insulated case, cathode girder, cathode line, anode tube, anode card, upper and lower exhaust gases passes, top exhanst gas outlet etc..
Described electric demister top arranges exhanst gas outlet.
The absorption tower of the present invention may be used for all of fume treatment.
On the other hand, the present invention also provides for a kind of flue gas treating process, and pending flue gas, first via absorption plant, then enters cooling humidification device, after discharge through the outlet of electric demister.
Specifically comprise the following steps that
Pending flue gas is entered by the gas approach of absorption plant, contacts with absorbent through desulfurization absorber portion, abundant mass-and heat-transfer, and the nuisance (or requiring absorbing material) in flue gas is transferred to liquid phase, and gas continues up；
Upward flowing air after absorption is entered cooling humidification device by the first connecting port, the external coolant of cooling humidification device and humidifying liquid, coolant flows through pipeline external, and humidifying liquid flows through pipe interior, cooling and the humidification of humidifying liquid through coolant so that trickle impurity particle increases；Because still containing substantial amounts of aerosol, steam, absorbent and field trash thereof in the upward flowing air after Xi Shouing, these materials exist with the most tiny particle form, when it enters gas-liquid separation humidification section, it will cooled down and grain growth.
Flue gas after cooled humidification continues up, enters High-speed Electric demister, and the fine particle in flue gas, under the electric field of electrostatic precipitator and the common effect of gravity, is attached in anode tube tube wall or the cathode line of electric demister, and discharges downwards along tube wall and polar curve；
The troubled liquor discharged downwards cooling humidification device in the middle part of absorption tower continues traveling downwardly the liquid distributing device to absorption plant, again cyclic absorption, recycling；
Through electricity except the granule content very low amount of the aerosol in the flue gas after mist, steam, absorbent etc., reaching emission request, the exhanst gas outlet from electric demister top is discharged.
Compared with traditional absorption tower, advantage and the good effect on the absorption tower of band electric demister of the present invention be: the nuisance particle in flue gas uses after indirectly increasing cold humidification and sufficiently reclaimed in electric demister so that the particle of no longer band aerosol, steam, absorbent etc. in the flue gas of discharge；Stop the source of generation of haze, and flow direction of material is simple and direct, reduce water and the waste of absorbent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment on absorption tower of the present invention.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
As it is shown in figure 1, the absorption tower of a kind of band electric demister, including the absorption plant 1 of bottom, the gas-liquid at middle part separates humidifying device 2 and the electric demister 3 at top.Absorption plant 1 top is connected by the first connecting port 4 bottom gas-liquid separation humidifying device 2, and gas-liquid is separated humidifying device 2 top and connected by the second connecting port 5 with bottom High-speed Electric demister 3.First connecting port 4 and the second connecting port 5 are all by flange connection, and centre has flue gas and flows through passage.
The absorption plant 1 of bottom includes liquid distributing device 11, desulfurization absorber portion 12 and liquid storage section 13 the most successively, liquid distributing device 11 is provided with circulating absorption solution import 14, being provided with circulating absorption solution outlet 15 at liquid storage section 13, the bottom of desulfurization absorber portion 12 is provided with gas approach 16.
The gas-liquid separation humidifying device 2 at middle part, by the way of indirect heat exchange and gas-liquid separation, realizes cooling humidification.Its top is provided with gas-liquid demarcation strip 21, bottom is provided with lower gas-liquid demarcation strip 22, close on the lower of gas-liquid demarcation strip 21 and cooling liquid outlet 23 is set along place, close on lower gas-liquid demarcation strip 22 on cooling liquid inlet 24 is set along place, many pipelines 25 are set between upper and lower gas-liquid demarcation strip, the top of pipeline 25 arranges humidifying liquid import 26 and communicates therewith, the external humidifying liquid of humidifying liquid import 26.
The electric demister 3 at top uses common High-speed Electric demister, and including electricity except mist cylinder 31, upper insulated case 32, lower insulated case 33, cathode girder 34, cathode line 35, anode tube 36, top arranges exhanst gas outlet 37.
It addition, absorption plant 1 can also include foam-removing layer, if absorption tower is packed tower, also include packing layer.Certainly, absorption plant 1 can be any type of absorption tower.
It is as follows that flue gas specifically processes technique:
Pending flue gas is entered by the gas approach 16 of absorption plant 1, this gas approach 16 is positioned at more than the overfall of bottom liquid storage section 13, contacts with absorbent through desulfurization absorber portion 12, abundant mass-and heat-transfer, nuisance (or requiring absorbing material) in flue gas is transferred to liquid phase, and gas continues up；External circulating pump at circulating absorption solution import 14 therein；
Upward flowing air after absorption is entered gas-liquid by the first connecting port 4 and separates humidifying device 2, gas-liquid separates humidifying device 2 by the external coolant of cooling liquid inlet 24, by the external humidifying liquid of humidifying liquid import 26, it is outside that coolant flows through pipeline 25, it is internal that humidifying liquid flows through pipeline 25, it is internal that flue gas flows through pipeline 25, through cooling and the humidification of humidifying liquid of coolant so that trickle impurity particle increases；Because still containing substantial amounts of aerosol, steam, absorbent and field trash thereof in the upward flowing air after Xi Shouing, these materials exist with the most tiny particle form, when it enters gas-liquid separation humidifying device 2, it will cooled down and grain growth.
Flue gas after cooled humidification continues up, enters High-speed Electric demister 3, and the fine particle in flue gas, under the electric field of electrostatic precipitator and the common effect of gravity, is attached in anode tube tube wall or the cathode line of electric demister 3, and discharges downwards along tube wall and polar curve；
The troubled liquor discharged downwards gas-liquid in the middle part of absorption tower separates humidifying device 2 and continues traveling downwardly the liquid distributing device 11 to absorption plant 1, cyclic absorption again, recycling；
Through electricity except the granule content very low amount of the aerosol in the flue gas after mist, steam, absorbent etc., reach emission request, discharge from the exhanst gas outlet 37 at electric demister 3 top.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as the Equivalent embodiments of equivalent variations.But every without departing from technical solution of the present invention content, any simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (2)
1. an absorption tower, including absorption plant, it is characterised in that: at the top attachment cooling humidification device of absorption plant, at the top attachment electric demister of cooling humidification device；
Described cooling humidification device is that gas-liquid separates humidifying device, and described electric demister is High-speed Electric demister, and described High-speed Electric demister top arranges exhanst gas outlet；
First connecting port is set between described absorption plant and cooling humidification device, between described cooling humidification device and electric demister, the second connecting port is set；
Described first, second connecting port uses flange connection or welding manner；
Described absorption plant includes liquid distributing device, desulfurization absorber portion and liquid storage section the most successively, and described liquid distributing device is provided with circulating absorption solution import, is provided with circulating absorption solution outlet at liquid storage section, and the bottom of described desulfurization absorber portion is provided with gas approach；
Described cooling humidification device includes gas-liquid demarcation strip, lower gas-liquid demarcation strip, close on and at gas-liquid demarcation strip, cooling liquid outlet is set, close on and at lower gas-liquid demarcation strip, cooling liquid inlet is set, many pipelines are set between upper and lower gas-liquid demarcation strip, the top of described pipeline arranges humidifying liquid import, external humidifying liquid；
Described absorption plant also includes foam-removing layer and packing layer.
2. a flue gas treating process, it is characterised in that: pending flue gas, first via absorption plant, then enters cooling humidification device, after discharge through the outlet of electric demister；
Specifically comprise the following steps that
Pending flue gas is entered by the gas approach of absorption plant, contacts with absorbent through desulfurization absorber portion, abundant mass-and heat-transfer, and the nuisance in flue gas is transferred to liquid phase, and gas continues up；
Upward flowing air after absorption is entered cooling humidification device by the first connecting port, the external coolant of cooling humidification device and humidifying liquid, coolant flows through pipeline external, and humidifying liquid flows through pipe interior, cooling and the humidification of humidifying liquid through coolant so that trickle impurity particle increases；
Flue gas after cooled humidification continues up, enters High-speed Electric demister, and the fine particle in flue gas, under the electric field of electrostatic precipitator and the common effect of gravity, is attached in anode tube tube wall or the cathode line of electric demister, and discharges downwards along tube wall and polar curve；
The troubled liquor discharged downwards cooling humidification device in the middle part of absorption tower continues traveling downwardly the liquid distributing device to absorption plant, again cyclic absorption, recycling；
The flue gas after electricity the removes mist exhanst gas outlet from electric demister top is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410176580.XA CN103920371B (en) | 2014-04-29 | 2014-04-29 | A kind of absorption tower and flue gas treating process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410176580.XA CN103920371B (en) | 2014-04-29 | 2014-04-29 | A kind of absorption tower and flue gas treating process thereof |
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| CN103920371A CN103920371A (en) | 2014-07-16 |
| CN103920371B true CN103920371B (en) | 2016-09-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105797850B (en) * | 2016-01-26 | 2017-08-22 | 江苏一品环保科技有限公司 | A kind of steam mixer for cement industry flue gas quality regulating system |
| CN105536484B (en) * | 2016-02-01 | 2018-08-21 | 西安交通大学 | A kind of pollutant pre-corrosion tower based on flue gas condensing |
| CN114558696B (en) * | 2022-04-29 | 2022-07-15 | 汕头市恒建科创生物质发电有限公司 | Domestic waste incinerator flue gas desulfurization, denitrification and dust removal purification device and purification method thereof |
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|---|---|---|---|---|
| CN2306066Y (en) * | 1997-07-21 | 1999-02-03 | 青岛化工环保装备制造有限公司 | Electric condensation defroster |
| CN201779677U (en) * | 2010-05-12 | 2011-03-30 | 中国瑞林工程技术有限公司 | Cooling and demisting combined tower |
| CN102210959A (en) * | 2011-05-17 | 2011-10-12 | 内蒙古阜丰生物科技有限公司 | Spraying granulation flue gas treatment system and process |
| CN202046881U (en) * | 2011-03-16 | 2011-11-23 | 建业庆松集团有限公司 | A device for producing high-concentration liquid SO2 from H2S-containing waste gas washed with low-temperature methanol |
| CN102671501A (en) * | 2012-05-14 | 2012-09-19 | 湖北徐风环保科技有限公司 | Method for solving ammonia desulphurization tail gas smoke zone |
| CN202538613U (en) * | 2012-04-06 | 2012-11-21 | 湖北徐风环保科技有限公司 | Integrated desulfurization and demisting device |
| CN203803312U (en) * | 2014-04-29 | 2014-09-03 | 青岛哈纳斯环保设备有限公司 | Absorption tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392597Y (en) * | 1999-10-07 | 2000-08-23 | 毛轶然 | Lifting-diaphragm desulfurising-dusting electric demisting tower |
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2014
- 2014-04-29 CN CN201410176580.XA patent/CN103920371B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2306066Y (en) * | 1997-07-21 | 1999-02-03 | 青岛化工环保装备制造有限公司 | Electric condensation defroster |
| CN201779677U (en) * | 2010-05-12 | 2011-03-30 | 中国瑞林工程技术有限公司 | Cooling and demisting combined tower |
| CN202046881U (en) * | 2011-03-16 | 2011-11-23 | 建业庆松集团有限公司 | A device for producing high-concentration liquid SO2 from H2S-containing waste gas washed with low-temperature methanol |
| CN102210959A (en) * | 2011-05-17 | 2011-10-12 | 内蒙古阜丰生物科技有限公司 | Spraying granulation flue gas treatment system and process |
| CN202538613U (en) * | 2012-04-06 | 2012-11-21 | 湖北徐风环保科技有限公司 | Integrated desulfurization and demisting device |
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| CN103920371A (en) | 2014-07-16 |
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