CN106621760A - Flue gas denitrification and desulfurization adsorption tower and system - Google Patents
Flue gas denitrification and desulfurization adsorption tower and system Download PDFInfo
- Publication number
- CN106621760A CN106621760A CN201611082934.XA CN201611082934A CN106621760A CN 106621760 A CN106621760 A CN 106621760A CN 201611082934 A CN201611082934 A CN 201611082934A CN 106621760 A CN106621760 A CN 106621760A
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- Prior art keywords
- alkali lye
- suction pipe
- flue gas
- air
- main suction
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Abstract
The invention discloses a flue gas denitrification and desulfurization adsorption tower. A gas-liquid mixing channel is arranged in the middle of the adsorption tower. The gas-liquid mixing channel is formed by upper, middle and lower channels which are communicated with one another; the diameter of the upper channel is gradually reduced from top to bottom, the middle channel is a throat section, and the diameter of the lower channel is gradually reduced from bottom to top; a flue gas inlet is formed in the side wall of the adsorption tower, the flue gas inlet is formed below a gas-liquid mixer, and an alkaline liquor circulating device is further arranged in the adsorption tower; the alkaline liquor circulating device comprises an alkaline liquor main suction pipe which is vertically arranged and an air inlet pipe, one end of which extends into the main suction pipe; the other end of the air inlet pipe is connected to an air compressor, a gas outlet nozzle is arranged at the front end, extending into one end of the lower portion of the alkaline liquor main suction pipe, of the air inlet pipe, the gas spraying direction of the gas outlet nozzle faces upward, the upper end of the alkaline liquor main suction pipe penetrates through the center of the gas-liquid mixture body to be connected to an alkaline liquor distributor, and the lower end of the alkaline liquor main suction pipe is connected to the alkaline suction pipe. The device not only is high in denitrification and desulfurization efficiency, but also is low in energy consumption.
Description
Technical field
The present invention relates to a kind of denitrating flue gas desulfuration absorbing tower.
Background technology
China is a country with coal as main energy sources, coal fired power generation be the most important approach that utilizes of coal in China it
One.In numerous atmosphere pollutions of fossil-fired unit discharge, and harm of the dust to environment is larger, is the master to be controlled
Pollutant is wanted, with the progress and expanding economy of society, thermal power plant is to the pollution of atmospheric environment by the generally pass of people
Note, therefore the impact for effectively reducing pollutant emission to improve to environment is that China's energy field sustainable development is faced
Severe challenge.
At present, existing denitrating flue gas desulfurization Technology application the most mainly adopts selective catalytic reduction
(SCR), SNCR method (SNCR) or/and ozone denitration is completed with reference to wet desulphurization, and wherein denitrating flue gas take off
The principle on sulphur absorption tower is from the top down to be sprayed lime stone alkaline slurry using circulating pump, and flue gas flows from bottom to top, lime
Stone slurry drops absorb the purpose that the nitrogen oxides and sulfur dioxide in flue gas reaches denitration removing in dropping process, but circulate
Pump energy consumption is big, and because the alkali lye that regeneration precipitation is not thoroughly back to slurry pool is easily caused the blocking of circulating pump, failure is more,
Inconvenience is changed in sewage treatment plant's bad environments, maintenance；In addition, absorption tower alkalescence inner space is big, most of space is without effect wave
Take.
The content of the invention
The invention provides a kind of denitrating flue gas desulfuration absorbing tower, not only desulfurization removing nitric efficiency high, and also energy consumption is low.
In order to solve the above problems, the technical solution adopted in the present invention is a kind of such, fume desulfurating absorption tower, institute
The absorption tower top stated is provided with exhanst gas outlet, and top is demisting layer, and middle part is air and liquid mixer, and bottom is stock tank area, described
Air and liquid mixer include being arranged at the body in the middle part of absorption tower and be vertically distributed in several gas-liquid mixed passages in vivo
Composition, described gas-liquid mixed passage is made up of the upper, middle and lower passage being interconnected, and upper channel diameter is from top to bottom gradually
Reduce, middle passage is trunnion section, and lower channel diameter is from the bottom to top diminishing；The side wall on the absorption tower is provided with cigarette
Gas entrance, the smoke inlet is located at the lower section of air and liquid mixer, and alkali lye EGR is additionally provided with described absorption tower, should
Alkali lye EGR includes the air inlet lines that the main suction pipe of alkali lye being vertically arranged and one end are stretched into the main suction pipe of alkali lye, air inlet lines
The other end be connected with air compressor machine machine, air inlet lines stretch into the front end of the one end in the bottom of the main suction pipe of alkali lye and are provided with out gas blowout
Mouth, upward, the main suction pipe upper end of described alkali lye passes through the center of air and liquid mixer body and alkali lye in the jet direction of outgassing nozzle
Distributor is connected, and the lower end of the main suction pipe of alkali lye is connected with horizontally disposed alkali lye branched pipette, described alkali lye branched pipette both sides water
It is flat to be provided with some alkali lye branches suction pipe being connected with the main suction pipe of alkali lye, have in the bottom spaced set of alkali lye branch suction pipe
The suction nozzle being connected with alkali lye branch suction pipe.
Preferably, it is provided with volume damper on described air inlet lines.
Preferably, described alkaline liquor distributor includes that divide liquid bag and edge point liquid that the main suction pipe upper end of alkali lye is connected take all of week
Alkali lye shower in divergent shape arrangement, the alkali lye shower is connected with a point liquid bag.
Present invention also offers a kind of denitrating flue gas desulphurization system, including the boiler, deduster being sequentially connected by flue,
Denitrating flue gas desulfuration absorbing tower, the direction along flow of flue gas is successively set on connection deduster with denitrating flue gas desulfurization absorption
Ozone injection apparatus and static mixer in the flue of tower, described ozone injection apparatus is connected with ozone generator, ozone
Generator is connected with air separation unit, and air separation unit and the air compressor machine being connected with air inlet lines are connected.
Beneficial effect：
1st, the present invention can be passed through by the use of the lingering remnants of past customs of the air compressor machine for providing air during fume treatment for air separation unit as source of the gas
Air inlet lines spray upwards into the main suction pipe of alkali lye, and negative pressure of vacuum is now formed in the main suction pipe of alkali lye, and alkali lye is inhaled in slurry pool
Enter to alkali lye main pipeline, and continuously slurry pool gone out by zone of pressure, reduce energy consumption, and be not easily blocked, reduce equipment dimension
Repair expense.
2nd, flue gas with spray and under alkali lye mix in air and liquid mixer, because gas-liquid mixed passage upper channel diameter by
Under up to, lower channel diameter be from the bottom to top it is diminishing, middle passage be trunnion section so that the flue gas for flowing from bottom to top
The alkali lye for spraying from the top down is accelerated in trunnion section speed, the collision effect of both reinforcings, strengthens mixing, improves desulfurization
Nitric efficiency.
Description of the drawings
Fig. 1 is fume desulfurating absorption tower structural representation；
Fig. 2 is denitrating flue gas desulphurization system structural representation.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, should
Embodiment is only used for the explanation present invention, does not constitute limiting the scope of the present invention.
Embodiment 1
Referring to Fig. 1, a kind of fume desulfurating absorption tower, described absorption tower top is provided with exhanst gas outlet, and top is demisting
Layer 2, middle part is air and liquid mixer, and bottom includes the body 2 being arranged in the middle part of absorption tower for the air and liquid mixer described in stock tank area 4 and erects
This several 3 one-tenth of gas-liquid mixed passage in vivo is directly distributed in, described gas-liquid mixed passage is by the upper, middle and lower being interconnected
Passage constitute, upper channel diameter be from top to bottom it is diminishing, middle passage be trunnion section, lower channel diameter be from the bottom to top by
It is tapered little；The side wall on the absorption tower is provided with smoke inlet 5, and the smoke inlet 5 is located at the lower section of air and liquid mixer, institute
Alkali lye EGR is additionally provided with the absorption tower stated, the alkali lye EGR includes the main suction pipe 6 and of alkali lye being vertically arranged
The air inlet lines 7 in the main suction pipe of alkali lye are stretched at end, and the other end of air inlet lines 7 is connected with air compressor machine machine 8, and air inlet lines 7 are stretched into
The front end of the one end in the bottom of the main suction pipe of alkali lye is provided with outgassing nozzle, and the jet direction of outgassing nozzle is upward, it is preferable that institute
Volume damper is provided with the air inlet lines stated；Center of the main upper end of suction pipe 6 of described alkali lye through air and liquid mixer body
It is connected with alkaline liquor distributor, described alkaline liquor distributor includes that a liquid bag is divided on divide liquid bag 11 and edge that the main suction pipe upper end of alkali lye is connected
Alkali lye shower 12 of the circumference in divergent shape arrangement, the alkali lye shower 12 is connected with a point liquid bag 11.Under the main suction pipe 6 of alkali lye
End connects with horizontally disposed alkali lye branched pipette 9, and described alkali lye branched pipette both sides are horizontally disposed with to have and are connected with the main suction pipe of alkali lye
Some alkali lye branches suction pipe 10 have the suction being connected with alkali lye branch suction pipe in the bottom spaced set of alkali lye branch suction pipe
Mouth.
Embodiment 2
Referring to Fig. 2, a kind of denitrating flue gas desulphurization system, including the boiler 21, deduster 22 being sequentially connected by flue, in fact
The denitrating flue gas desulfuration absorbing tower 23 described in 1 is applied, connection deduster is successively set on along the direction of flow of flue gas and flue gas is taken off
Ozone injection apparatus 24 and static mixer 25 in the flue of nitre desulfuration absorbing tower, described ozone injection fills 24 and puts and ozone
Generator 15 is connected, and ozone generator 26 is connected with air separation unit 27, air separation unit 27 and the air compressor machine being connected with air inlet lines
It is connected.
A part of compressed air is imported air separation unit 27 by air compressor machine, and Jing air separation units 27 generate high-concentration oxygen Jing ozone
Generator 26 generates ozone after acting on, and the nitrogen oxides of the low middle valence state of its flue gas after removing dust device 22 is acted on is oxidized to easily
The high-valence state nitrogen oxides of water is dissolved in, into absorption tower 23；Air compressor machine is by another part compressed air by air inlet lines to alkali
Spray upwards in the main suction pipe of liquid, negative pressure of vacuum is now formed in the main suction pipe of alkali lye, alkali lye is sucked into alkali lye supervisor in slurry pool
In road, sprayed downwards by alkaline liquor distributor, with the flue gas flowed from bottom to top into absorption tower 23 in air and liquid mixer
Trunnion section is fully contacted reaction, after removing high-valence state nitrogen oxides and sulfur dioxide, is discharged by top.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of denitrating flue gas desulfuration absorbing tower, it is characterised in that described absorption tower top is provided with exhanst gas outlet, and top is
Demisting layer, middle part is air and liquid mixer, and bottom is stock tank area, and described air and liquid mixer includes being arranged in the middle part of absorption tower
Body and this several gas-liquid mixed passages composition in vivo is vertically distributed in, described gas-liquid mixed passage is by being interconnected
Upper, middle and lower passage composition, upper channel diameter is from top to bottom diminishing, and middle passage is trunnion section, and lower channel diameter is by under
Supreme is diminishing；The side wall on the absorption tower is provided with smoke inlet, and described smoke inlet is located at air and liquid mixer
Lower section, alkali lye EGR is additionally provided with described absorption tower, the alkali lye EGR includes the alkali lye master that is vertically arranged
The air inlet lines in the main suction pipe of alkali lye are stretched into suction pipe and one end, and the other end of air inlet lines is connected with air compressor machine machine, air inlet lines
The front end for stretching into the one end in the bottom of the main suction pipe of alkali lye is provided with outgassing nozzle, and the jet direction of outgassing nozzle is upward, described
The main suction pipe upper end of alkali lye be connected with alkaline liquor distributor through the center of air and liquid mixer body, the lower end of the main suction pipe of alkali lye and water
The flat alkali lye branched pipette for arranging is connected, and described alkali lye branched pipette both sides are horizontally disposed with some with what the main suction pipe of alkali lye was connected
Alkali lye branch suction pipe, there is the suction nozzle being connected with alkali lye branch suction pipe in the bottom spaced set of alkali lye branch suction pipe.
2. a kind of denitrating flue gas desulphurization system according to claim 1, it is characterised in that set on described air inlet lines
It is equipped with volume damper.
3. a kind of denitrating flue gas desulfuration absorbing tower according to claim 1, it is characterised in that described alkaline liquor distributor bag
Include point liquid bag that the main suction pipe upper end of alkali lye is connected and take all of alkali lye shower of the week in divergent shape arrangement along point liquid, alkali lye spray
Shower pipe is connected with a point liquid bag.
4. a kind of denitrating flue gas desulphurization system, it is characterised in that include boiler, deduster, the right being sequentially connected by flue
The denitrating flue gas desulfuration absorbing tower described in any claims of 1-3 is required, the direction along flow of flue gas is successively set on connection
Ozone injection apparatus and static mixer in the flue of deduster and denitrating flue gas desulfuration absorbing tower, described ozone injection dress
Put and be connected with ozone generator, ozone generator is connected with air separation unit, air separation unit and the pneumatics being connected with air inlet lines
Machine is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611082934.XA CN106621760A (en) | 2016-11-30 | 2016-11-30 | Flue gas denitrification and desulfurization adsorption tower and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611082934.XA CN106621760A (en) | 2016-11-30 | 2016-11-30 | Flue gas denitrification and desulfurization adsorption tower and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106621760A true CN106621760A (en) | 2017-05-10 |
Family
ID=58814579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611082934.XA Withdrawn CN106621760A (en) | 2016-11-30 | 2016-11-30 | Flue gas denitrification and desulfurization adsorption tower and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106621760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174933A (en) * | 2017-06-01 | 2017-09-19 | 山东三融环保工程有限公司 | A kind of smoke eliminator with turbulent flow gas-liquid switching layer |
| CN108310956A (en) * | 2018-02-28 | 2018-07-24 | 江苏苏菱铝用阳极有限公司 | A kind of prebaked anode roaster furnace smoke eliminator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532207A1 (en) * | 1991-08-29 | 1993-03-17 | Cannon Boiler Works Inc. | A process for removing contaminants from exhaust gas |
| CN101053747A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously desulfurization and denitration wet ammonia flue gas cleaning technology and system thereof |
| CN201316597Y (en) * | 2008-12-05 | 2009-09-30 | 江汉大学 | Alveolate venturi smoke gas dust removal and desulphurization clearing device |
| CN204724003U (en) * | 2015-06-04 | 2015-10-28 | 南京龙源环保有限公司 | The cleaning system of denitration of boiler smoke |
| CN105148698A (en) * | 2015-08-21 | 2015-12-16 | 南京白云化工环境监测有限公司 | Boiler flue gas desulfurization and denitrification system |
| CN205517023U (en) * | 2016-01-21 | 2016-08-31 | 江苏菲达环保科技有限公司 | Anticorrosive wet dust collector |
-
2016
- 2016-11-30 CN CN201611082934.XA patent/CN106621760A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532207A1 (en) * | 1991-08-29 | 1993-03-17 | Cannon Boiler Works Inc. | A process for removing contaminants from exhaust gas |
| CN101053747A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously desulfurization and denitration wet ammonia flue gas cleaning technology and system thereof |
| CN201316597Y (en) * | 2008-12-05 | 2009-09-30 | 江汉大学 | Alveolate venturi smoke gas dust removal and desulphurization clearing device |
| CN204724003U (en) * | 2015-06-04 | 2015-10-28 | 南京龙源环保有限公司 | The cleaning system of denitration of boiler smoke |
| CN105148698A (en) * | 2015-08-21 | 2015-12-16 | 南京白云化工环境监测有限公司 | Boiler flue gas desulfurization and denitrification system |
| CN205517023U (en) * | 2016-01-21 | 2016-08-31 | 江苏菲达环保科技有限公司 | Anticorrosive wet dust collector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174933A (en) * | 2017-06-01 | 2017-09-19 | 山东三融环保工程有限公司 | A kind of smoke eliminator with turbulent flow gas-liquid switching layer |
| CN108310956A (en) * | 2018-02-28 | 2018-07-24 | 江苏苏菱铝用阳极有限公司 | A kind of prebaked anode roaster furnace smoke eliminator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20170510 |