CN100515542C - Exhaust gas purification system - Google Patents
Exhaust gas purification system Download PDFInfo
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- CN100515542C CN100515542C CNB2005100442120A CN200510044212A CN100515542C CN 100515542 C CN100515542 C CN 100515542C CN B2005100442120 A CNB2005100442120 A CN B2005100442120A CN 200510044212 A CN200510044212 A CN 200510044212A CN 100515542 C CN100515542 C CN 100515542C
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Abstract
The invention relates to a waste gas purifying system, which comprises: a smoke purifying tower, whose upper part has a spray room, and lower part has a gas-liquid mixing room, wherein the spray room has filter layer and spray tube; the upper end is connected to the clean gas outlet tube; the side wall of gas-liquid mixing room has overflow open; the purify liquid pool via transmit tube is through to the spray tube of smoke purifying tower; the transmit tube is arranged with liquid pump; the purify liquid recycle pool via the recycle tube is connected to the overflow open of gas-liquid mixing room and connected to the purify liquid pool via a connecting tube; the gas-liquid mixer is inside the gas-liquid mixing room, while it has a main tube and several branch tubes through to the main tube; the main tube via a wind absorber is through to one smoke outlet tube of boiler; each branch tube is distributed with several gas ejectors. The invention can fully contact and mix the purify liquid and smoke, to realize better dedust effect, and the purify liquid can be automatically recycled, to realize high utilization of purify liquid, with simple operation.
Description
Technical field
The present invention relates to off-gas cleaning equipment, specifically be meant a kind of equipment that the flue dust that boiler is discharged is purified of being used for.
Background technology
The employing coal is that the maximum harm of the boiler of fuel is to discharge a large amount of pernicious gas and material, contain a large amount of hydrogen sulfide, nitric oxide, hydrocarbon and carbon granule, charcoal ash in the flue dust of its discharging, float pernicious gas and materials such as dirt, severe contamination atmosphere and environment cause great threat to human and vegeto-animal existence.Therefore, people have designed the device that the various flue dust that boiler is discharged purify.
For example; Chinese patent discloses " a kind of method of smoke dust in boiler and with the blowing water dust arrester of its manufacturing " for No. 98118115.5; mainly be that the flue dust that boiler is discharged is introduced in the bath water duster by air-introduced machine; after by water or buck the pernicious gas that contains in the flue dust and soot dust granule being disposed; be discharged into again in the air, reach the purpose that purifies flue dust protection environment.Wherein, water or buck are equipped with in the bath water duster bottom, two-layer filter screen and shower are equipped with in top, water or buck top also are provided with the dash smoke-choking plate, and after flue dust entered bath water duster, its outlet was positioned at water surface top, and adjoined water surface, the part flue dust is by the absorption of water or buck and melt, and the part flue dust also falls back in water or the buck under shower water, filter screen effect, and remaining gas is then discharged by the chimney of bath water duster top.
Above-mentioned dust arrester has adopted liquid adsorption to melt and has sprayed two kinds of methods and carried out dedusting, these two kinds of typical methods that method is dedusting, a kind of or the employing simultaneously that uses in these two kinds of methods is all arranged in most dust arrester, and its dust removing effects key is whether flue dust and liquid fully mix, melt.In the scheme of above-mentioned patent application, flue dust is discharged in water or buck water surface top and water or buck and is difficult to abundant mixing.The dust arrester that also has stretches into blast pipe below the liquid level, flue dust is directly entered in the liquid so that and liquid further mix, but, still be difficult to abundant mixing because gas and liquid contact surface are long-pending very little.Also have and adopt the mode that stirs that flue dust and liquid are fully mixed, but facts have proved that effect is undesirable, because in whipping process, volume of smoke does not fully mix with liquid as yet and has just upwards broken away from liquid level, and agitating device has increased the complexity of dust arrester, has improved cost.
Another problem is, whether the absorption liquid that dedusting is adopted can be recycling automatically, if can not, will waste a large amount of water, make the dedusting cost higher, cause producer to be unwilling to use dust arrester.Though the water that above-mentioned dust arrester is discharged is water purification,, its water or buck as absorption liquid can not be recycling automatically, causes the utilization rate of absorption liquid lower, thereby increased the use cost of cleaner; And caused this dust arrester operation inconvenience, used trouble,, needed to carry out two operations at least because in use, the one, in the water inlet of bath water duster, in time add water, the 2nd, be in time from the bath water duster effluent sewerage.Currently used dust arrester does not mostly possess the absorption liquid function of circulation automatically.
Summary of the invention
The invention provides a kind of off-gas cleaning equipment, its main purpose is to overcome that gas and absorption liquid can not fully mix in the existing dust arrester, thereby the unfavorable shortcoming of dust removing effects; And overcome that absorption liquid can not be recycling automatically in the existing dust arrester, thereby cause that the absorption liquid utilization rate is low, operation inconvenience, use the shortcoming of trouble.
The present invention adopts following technical scheme: off-gas cleaning equipment comprises: the clarifying smoke tower, and a spray chamber is formed at its top, its underpart forms a gas-liquid mixed chamber, be provided with filter course and shower in the spray chamber, the upper end is provided with the pure qi (oxygen) discharge pipe, and gas-liquid mixed chamber sidewall is provided with overfall; Scavenging solution preparation pond is communicated with by the shower of conveyance conduit with the clarifying smoke tower, and this conveyance conduit is provided with scavenging solution is evacuated to drawing liquid pump in the shower; The scavenging solution recovery pond is connected by the overfall of recovery channel with the gas-liquid mixed chamber, and its liquid level is lower than the height of overfall, and is connected with scavenging solution preparation pond by a connecting pipe; Liqiud-gas mixing device, be located in the gas-liquid mixed chamber of clarifying smoke tower, comprise some arms of being responsible for and being connected with this person in charge, the person in charge is connected with the smoke exhaust pipe of boiler by an induced-draught fan, the position of each arm all is lower than overfall, is distributed with some fumaroles on each arm.
During use, scavenging solution in the scavenging solution preparation pond is transported to shower through the drawing liquid pump effect, it is indoor that the scavenging solution of shower ejection falls into gas-liquid mixed, when the indoor liquid level of gas-liquid mixed reaches the height of overfall, scavenging solution flows into the scavenging solution recovery pond from overfall through recovery channel, reclaiming clean liquid in the scavenging solution recovery pond is through entering scavenging solution preparation pond communicating pipe, thus, scavenging solution is ceaselessly circulation automatically, thereby the service efficiency that can make scavenging solution reaches the maximum limit, and owing to be automatic circulation, it is very easy to use; The fumarole of flue dust from each arm of Liqiud-gas mixing device sprays into the scavenging solution, produce a large amount of tiny bubbles, each bubble and liquid bump and run foul of each other, produce the bubble more, that volume is littler, thereby the contact area of flue dust and scavenging solution sharply rises, and makes harmful substance in the flue dust and pernicious gas can be cleaned liquid and fully absorbs.
The concrete structure of aforementioned off-gas cleaning equipment Liqiud-gas mixing device is: the person in charge of its Liqiud-gas mixing device vertically is located at the middle part of gas-liquid mixed chamber, each arm be radial be vertically connected at this person in charge around, fumarole is uniformly distributed on the perisporium of each arm.
Further, the quantity of described arm is ten six roots of sensation, and is two-layer about dividing, and eight every layer, is distributed with eight fumaroles of the six every rows of row on each root arm.
Further, the diameter of described fumarole is 10-20mm, and the distance between adjacent two fumaroles in same row's fumarole is 25-35mm.
Aforementioned off-gas cleaning equipment, its overfall comprises last overfall and the underflow head piece that is positioned at differing heights, each overfall is equipped with the switch that makes its break-make, select to go up overfall or underflow head piece as required, can control the height of liquid level in the gas-liquid mixed chamber, scavenging solution in the gas-liquid mixed chamber what are promptly controlled.
Aforementioned off-gas cleaning equipment, its filter course has several layers, and described shower is located at the top of each filter course.
Aforementioned off-gas cleaning equipment, its filter course has several layers, and described shower also has several, and each shower correspondence one by one is located at above or below each filter course.
Further, the position of described spray chamber above each filter course is respectively equipped with observes the door that reloads, and bottom, described gas-liquid mixed chamber is provided with draws the slag door.
Aforementioned off-gas cleaning equipment, its conveyance conduit is provided with a lateral, and the outlet of this lateral is positioned at the gas-liquid mixed chamber, and thus, under the original state, the scavenging solution in the gas-liquid mixed chamber can be provided by this lateral.
As from the foregoing, compare with prior art, the present invention has following outstanding advantage: one, and scavenging solution can fully contact and mix with flue dust, thereby makes dust removing effects better; Two, scavenging solution can be recycling automatically, thereby the utilization rate height of scavenging solution, and use and operating process are convenient.
Description of drawings
Fig. 1 is the planar structure schematic diagram of the embodiment of the invention one;
Fig. 2 is the upward view of the embodiment of the invention one Liqiud-gas mixing device;
Fig. 3 is the planar structure schematic diagram of the embodiment of the invention two;
Fig. 4 is the planar structure schematic diagram of the embodiment of the invention three.
The specific embodiment
See figures.1.and.2, specific embodiments of the invention one, this off-gas cleaning equipment comprises clarifying smoke tower 1, scavenging solution preparation pond 2, scavenging solution recovery pond 3 and Liqiud-gas mixing device 4.
Clarifying smoke tower 1 is a ducted body, one spray chamber 11 is formed at its top, its underpart forms a gas-liquid mixed chamber 12, be provided with filter course 113 and shower 112 in the spray chamber 11, the upper end is provided with pure qi (oxygen) discharge pipe 110, gas-liquid mixed chamber 12 sidewalls are provided with overfall 121, underflow head piece 122, and each overfall 121,122 is equipped with the switch that makes its break-make.Filter course 113 has two-layer, shower 112 is located at the top of two filter courses 113, spray chamber 11 sidewalls are provided with one corresponding to each filter course 113 and observe the door 114 that reloads, be used to observe the working condition of spray chamber 11 inside and filter course 113 is reloaded, the sidewall of gas-liquid mixed chamber 12 also is provided with an observation window 115, the bottom is provided with one and draws slag door 120, is used for removing the sediment of gas-liquid mixed chamber 12.
Scavenging solution preparation pond 2 is used for preparing the scavenging solution that absorbs flue dust impurity and pernicious gas, this scavenging solution preparation pond 2 is communicated with the shower 112 of clarifying smoke tower 1 by conveyance conduit 22, and this conveyance conduit 22 is provided with scavenging solution is evacuated to drawing liquid pump 21 in the shower 112.
Scavenging solution recovery pond 3 is used to store the scavenging solution that clarifying smoke tower 1 overflows, this scavenging solution recovery pond 3 is connected with the last overfall 121 or the underflow head piece 122 of gas-liquid mixed chamber 12 by recovery channel 31, its liquid level is lower than the height of going up overfall 121 or underflow head piece 122, and is connected with scavenging solution preparation pond 2 by a connecting pipe 32.When overfall 121 was gone up in employing, the liquid level in the gas-liquid mixed chamber 12 was higher, and on the contrary, when adopting underflow head piece 122, its liquid level is just lower, to adapt to different needs.
Liqiud-gas mixing device 4 is located in the gas-liquid mixed chamber 12 of clarifying smoke tower 1, comprise a person in charge 41 and the some arms 42 that are connected with this person in charge 41, being responsible for 41 is connected with the smoke exhaust pipe 5 of boiler by an induced-draught fan 51, the position of each arm 42 all is lower than overfall 121,122, is distributed with some fumaroles 420 on each arm 42.
With reference to Fig. 2, the person in charge 41 of above-mentioned Liqiud-gas mixing device 4 vertically is located at the middle part of gas-liquid mixed chamber 12, each arm 42 be radial be vertically connected at this person in charge 41 around, fumarole 420 is uniformly distributed on the perisporium of each arm 42, the quantity of arm 42 is ten six roots of sensation, divide two-layer up and down, eight every layer, be distributed with eight fumaroles 420 of the six every rows of row on each root arm 42, the diameter of each fumarole 420 is 10-20mm, and the distance between adjacent two fumaroles 420 in same row's fumarole 420 is 25-35mm.
The fumarole 420 of flue dust from Liqiud-gas mixing device 4 each arm 42 sprays into the scavenging solution, produce a large amount of tiny bubbles, each bubble and liquid bump and run foul of each other, produce the bubble more, that volume is littler, thereby the contact area of flue dust and scavenging solution sharply rises, and makes harmful substance in the flue dust and pernicious gas can be cleaned liquid and fully absorbs.
During use, in scavenging solution preparation pond 2, prepare scavenging solution, scavenging solution is through drawing liquid pump 21 effects, be transported to shower 112 through conveyance conduit 22, the scavenging solution of shower 112 ejections is in falling into gas-liquid mixed chamber 12, when the liquid level in the gas-liquid mixed chamber 12 reaches the height of overfall 121 or 122, scavenging solution flows into scavenging solution recovery pond 3 from overfall 121 or 122 through recovery channel 31, reclaiming clean liquid in the scavenging solution recovery pond 3 is through entering scavenging solution preparation pond 2 communicating pipe 32, thus, scavenging solution is ceaselessly circulation automatically, thereby can make the service efficiency of scavenging solution reach the maximum limit, and owing to be automatic circulation, it is very easy to use.
Thus, the absorption of flue dust scavenging solution in gas-liquid mixed chamber 12, filter course 113 filter, shower 112 sprays, become the pure qi (oxygen) of allow compliance with emission standards at last, discharge from the pure qi (oxygen) discharge pipe 110 at clarifying smoke tower 1 top.
Specific embodiments of the invention two, with reference to Fig. 3, its basic structure is identical with embodiment one with principle, the main distinction has 3 points: the one, and the structure of its Liqiud-gas mixing device 4 is different, the person in charge 41 of this Liqiud-gas mixing device 4 vertically is located at the side in this gas-liquid mixed chamber 12, each arm 42 is vertically connected on this person in charge 41, and extends to the opposite side of gas-liquid mixed chamber 12; The 2nd, its shower 112 has three, and filter course 113 has three layers, and each shower 112 correspondence is positioned at the below of each filter course 113; The 3rd, its conveyance conduit 22 is provided with a lateral 23, and the outlet of this lateral 23 is positioned at gas-liquid mixed chamber 12, and thus, under the original state, the scavenging solution in the gas-liquid mixed chamber 12 can be provided by this lateral 12.Other structure is corresponding identical with embodiment one.
Specific embodiments of the invention three, with reference to Fig. 4, its basic structure is identical with embodiment two with principle, and the main distinction is: its each shower 112 correspondences are positioned at the top of each filter course 113.Other structure is corresponding identical with embodiment two.
The body of the tower of clarifying smoke tower 1 is higher among the foregoing description one and the embodiment two, is applicable to vertical boiler, and the body of the tower of clarifying smoke tower 1 is shorter among the embodiment three, is applicable to horizontal boiler.
Above-mentioned only is a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (8)
1, off-gas cleaning equipment comprises:
The clarifying smoke tower, a spray chamber is formed at its top, and its underpart forms a gas-liquid mixed chamber, is provided with filter course and shower in the spray chamber, and the upper end of spray chamber is provided with the pure qi (oxygen) discharge pipe, and gas-liquid mixed chamber sidewall is provided with overfall;
Scavenging solution preparation pond is communicated with by the shower of conveyance conduit with the clarifying smoke tower, and this conveyance conduit is provided with scavenging solution is evacuated to drawing liquid pump in the shower;
The scavenging solution recovery pond is connected by the overfall of recovery channel with the gas-liquid mixed chamber, and its liquid level is lower than the height of overfall, and is connected with scavenging solution preparation pond by a connecting pipe;
Liqiud-gas mixing device, be located in the gas-liquid mixed chamber of clarifying smoke tower, comprise some arms of being responsible for and being connected with this person in charge, the person in charge is connected with the smoke exhaust pipe of boiler by an induced-draught fan, the position of each arm all is lower than overfall, is distributed with some fumaroles on each arm, and the person in charge of described Liqiud-gas mixing device vertically is located at the middle part of gas-liquid mixed chamber, each arm be radial be vertically connected at this person in charge around, fumarole is uniformly distributed on the perisporium of each arm.
2, off-gas cleaning equipment as claimed in claim 1, wherein, the quantity of described arm is ten six roots of sensation, and is two-layer about dividing, and eight every layer, is distributed with eight fumaroles of the six every rows of row on each root arm.
3, off-gas cleaning equipment as claimed in claim 2, wherein, the diameter of described fumarole is 10-20mm, the distance between adjacent two fumaroles in same row's fumarole is 25-35mm.
4, off-gas cleaning equipment as claimed in claim 1, wherein, described overfall comprises last overfall and the underflow head piece that is positioned at differing heights, each overfall is equipped with the switch that makes its break-make.
5, off-gas cleaning equipment as claimed in claim 1, wherein, described filter course has several layers, and described shower is located at the top of each filter course.
6, off-gas cleaning equipment as claimed in claim 1, wherein, described filter course has several layers, and described shower also has several, and each shower correspondence one by one is located at above or below each filter course.
7, as claim 5 or 6 described off-gas cleaning equipments, wherein, the position of described spray chamber above each filter course is respectively equipped with observes the door that reloads, and bottom, described gas-liquid mixed chamber is provided with draws the slag door.
8, off-gas cleaning equipment as claimed in claim 1, wherein, described conveyance conduit is provided with a lateral, and the outlet of this lateral is positioned at the gas-liquid mixed chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100442120A CN100515542C (en) | 2005-08-04 | 2005-08-04 | Exhaust gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100442120A CN100515542C (en) | 2005-08-04 | 2005-08-04 | Exhaust gas purification system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1907542A CN1907542A (en) | 2007-02-07 |
| CN100515542C true CN100515542C (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100442120A Expired - Fee Related CN100515542C (en) | 2005-08-04 | 2005-08-04 | Exhaust gas purification system |
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| Country | Link |
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| CN (1) | CN100515542C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357285B (en) * | 2008-09-23 | 2010-12-22 | 李学良 | Vertical type flue dust, sulphur dioxide eliminator |
| CN102886194A (en) * | 2011-07-21 | 2013-01-23 | 天津渤大硫酸工业有限公司 | Sulphur melting odor removing absorbing device |
| CN102441307A (en) * | 2011-11-09 | 2012-05-09 | 铜陵康达铝合金制品有限责任公司 | Smelting furnace exhaust gas filtering system |
| CN102489100A (en) * | 2011-12-19 | 2012-06-13 | 铜陵康达铝合金制品有限责任公司 | Waste gas spray tower of melting furnace |
| CN104402187A (en) * | 2014-08-07 | 2015-03-11 | 胡延节 | Combined facility for making sludge synthetic fuel |
| CN107456819A (en) * | 2016-06-03 | 2017-12-12 | 林弘彪 | Haze filtering system |
| CN107687647A (en) * | 2017-08-18 | 2018-02-13 | 博瑞特热能设备股份有限公司 | A kind of horizontal burning oil fuel gas steam boiler |
| CN108079708B (en) * | 2017-12-15 | 2019-11-05 | 中国石油大学(北京) | A kind of circulation scrubbing tower gas distributor and its design method |
| CN113606020B (en) * | 2021-07-16 | 2022-03-22 | 江苏伟博动力技术有限公司 | Gas-liquid mixer for waste gas purification |
-
2005
- 2005-08-04 CN CNB2005100442120A patent/CN100515542C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1907542A (en) | 2007-02-07 |
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