CN1401413A - Flue gas desulfurizing process for heat and power boler - Google Patents
Flue gas desulfurizing process for heat and power boler Download PDFInfo
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- CN1401413A CN1401413A CN 02135575 CN02135575A CN1401413A CN 1401413 A CN1401413 A CN 1401413A CN 02135575 CN02135575 CN 02135575 CN 02135575 A CN02135575 A CN 02135575A CN 1401413 A CN1401413 A CN 1401413A
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- flue gas
- desulfurizing
- absorption liquid
- desulfurizing tower
- boler
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Abstract
A process for desulfurizing flue gas of the boiler in steam-power plant is characterized by that after dusted the flue gas is blown into desulfurizing tower, where it reacts with the absorption liquid sprayed by circulating pump from tank into said tower to produce CaSO3.1/2H2O liquid, the air is filled by aerator into said CaSO3.1/2H2O liquid for oxidizing it to obtain gypsum crystal to be discharged, and the resultant flue gas is demisted for exhausting it via chimney. Its advantages are no secondary pollution, and high effect.
Description
Technical field
The present invention relates to water-tube boiler flue gas desulfurization technique field.
Background technology
At present, be widely used in industrial flue gas desulfurizing process for heat and power boler, particularly wet desulfurizing process, there is following shortcoming in it in the middle of concrete the application:
One, no oxygenate apparatus, it causes the desulfurization product instability, causes secondary pollution easily.In the tradition sulfur removal technology, finally forming product is SO
3 2-Compound is scraped, drenches with rain, is tanned by the sun at wind and all is easy to separate out SO under the environment
2Or formation H
2SO
3, reenter air or flow into following water trench and then cause secondary pollution.
Two, discharging flue gas with water problem is serious.The conventional dehydration demister adopts the steel wire lump web frame mostly, and it is easily stopped up by flue dust, causes that resistance is big, dehydration is not thorough, and it corrodes follow-up flue, acid mist pollution external environment condition easily.
Three, existing desulfurization atomizer adopts the shower nozzle form, and it easily stops up, and it can't guarantee that atomising device normally moves.
Four, desulphurization system pipeline, wall fouling are serious, cause pipeline blockage easily.
Summary of the invention
The invention provides a kind of flue gas desulfurizing process for heat and power boler, the desulfurization product instability that it can solve the prior art existence easily causes secondary pollution, discharging flue gas with water problem is serious, atomizing effect is bad, the problem of the easy fouling of desulphurization system.
The objective of the invention is to be achieved through the following technical solutions: flue gas desulfurizing process for heat and power boler, lime white hopper D sends into absorption liquid in the circulating slot C by feed pump E, flue gas through dust removal process is sent into desulfurizing tower A by flue O by blower fan H, absorption liquid in the circulating slot C is by circulating pump G atomized spray in desulfurizing tower A, and the abundant haptoreaction of flue gas and absorption liquid forms CaSO
3.1/2H
2The O mixing material enters circulating slot C from absorption tower A bottom, during the gas distribution pipe Q aeration of aerating machine B in circulating slot C, this mixing material then oxidation forms the gypsum crystallization body, and circulating pump G makes absorption liquid reciprocation cycle between desulfurizing tower A and circulating slot C, and gypsum crystallization somaplasm liquid is discharged through discharge pipe N; The flue gas of band water smoke discharges by chimney I behind control and measuring after demister 9 is removed water smoke again.
The desulfurizing tower that is used for above-mentioned water-tube boiler flue gas desulfurization, it has housing, be respectively arranged with into mouth on the housing, outlet flue and blanking port, the demister that is provided with at least one block of indention shape flap is connected with housing, the pipeline that is connected with housing is installed in the bottom of demister, and the single hole spiral nozzle is connected with pipeline.
Be further to realize purpose of the present invention, also can finish by the following technical programs: described flue gas desulfurizing process for heat and power boler, blower fan H sends into absorption tower A with flue gas after by valve L; Flue gas after treatment enters chimney I from desulfurizing tower A through valve K; Blower fan H sends into chimney I with flue gas by valve J.Absorption liquid in the lime white hopper D stirs through agitator P.
The described desulfurizing tower that is used for above-mentioned water-tube boiler flue gas desulfurization, the water inlet pipe that is connected with housing is installed in the top of demister, and shower nozzle is connected with water inlet pipe.Said single hole spiral nozzle is cone shape in the shape of a spiral, its middle and lower part is provided with at least one helical layer body, its top is provided with through hole, at least one helical layer body is provided with the hole that communicates with through hole, the conveyor screw bottom is the sealing shape, and the hole on the conveyor screw communicates with the space each other of each helical layer body.
The beneficial effect that the present invention can produce: because of the absorption liquid in the circulating slot is carried out oxygenation, make desulfurization product stable especially, it can not cause secondary pollution to environment under any condition; Because of adopting the folded plate type demister, it can fully be removed the water smoke composition in the flue gas, so avoided the follow-up pipeline of corrosion, acid mist pollution external environment condition; Because of adopting the single hole spiral nozzle, it is difficult for stopping up, and can guarantee spray effect.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is the structural representation of desulfurizing tower A among the present invention;
Fig. 3 is the plan structure schematic diagram of demister 9 among the present invention;
Fig. 4 is the A-A view of Fig. 3;
Fig. 5 is the structural representation of single hole spiral nozzle 6 among the present invention.
The specific embodiment
Flue gas desulfurizing process for heat and power boler,: lime white hopper D sends into absorption liquid in the circulating slot C by feed pump E, flue gas through dust removal process is sent into desulfurizing tower A by flue O by blower fan H, absorption liquid in the circulating slot C is by circulating pump G atomized spray in desulfurizing tower A, and the abundant haptoreaction of flue gas and absorption liquid forms CaSO
3.1/2H
2The O mixing material enters circulating slot C from absorption tower A bottom, during the gas distribution pipe Q aeration of aerating machine B in circulating slot C, this mixing material then oxidation forms the gypsum crystallization body, and circulating pump G makes absorption liquid reciprocation cycle between desulfurizing tower A and circulating slot C, and gypsum crystallization somaplasm liquid is discharged through discharge pipe N; The flue gas of band water smoke discharges by chimney I behind control and measuring after demister 9 is removed water smoke again.Blower fan H sends into absorption tower A with flue gas after by valve L; Flue gas after treatment enters chimney I from desulfurizing tower A through valve K; Blower fan H sends into chimney I with flue gas by valve J.Absorption liquid in the circulating slot C stirs through agitator F.Absorption liquid in the lime white hopper D stirs through agitator P.
The desulfurizing tower that is used for above-mentioned water-tube boiler flue gas desulfurization, it has housing 1, be respectively arranged with into mouth 8 on the housing 1, outlet flue 2 and blanking port 7, the demister 9 that is provided with at least one block of indention shape flap 10 is connected with housing 1, the pipeline 5 that is connected with housing 1 is installed in the bottom of demister 9, and single hole spiral nozzle 6 is connected with pipeline 5.The water inlet pipe 4 that is connected with housing 1 is installed in the top of demister 9, and shower nozzle 3 is connected with water inlet pipe 4.Said single hole spiral nozzle 6 is cone shape in the shape of a spiral, its middle and lower part is provided with at least one helical layer body 12, its top is provided with through hole 11, at least one helical layer body 12 is provided with the hole 13 that communicates with through hole 11, conveyor screw 12 bottoms are the sealing shape, and the hole 13 on the conveyor screw 12 communicates with the space each other of each helical layer body 12.During making, process various parts assemblings by above-mentioned requirements and get final product.During installation, the flue that will handle with advance mouth 8 and join, chimney and outlet flue 2 are joined, slag-draining device and blanking port 7 are joined, water supply pipe and water inlet pipe 4 are joined, doctor solution pipeline and pipeline 5 are joined to get final product.During use, flue gas enters in the desulfurizing tower A, 6 sprayings of single hole spiral nozzle, and the flue gas of band water smoke is through polylith indention shape flap 10 space each other, and the water smoke in the flue gas then forms water droplet and falls on flap 10.The technology department that the present invention does not describe in detail is divided into known technology.
Claims (7)
1, flue gas desulfurizing process for heat and power boler, it is characterized in that: lime white hopper D sends into absorption liquid in the circulating slot C by feed pump E, flue gas through dust removal process is sent into desulfurizing tower A by flue O by blower fan H, absorption liquid in the circulating slot C is by circulating pump G atomized spray in desulfurizing tower A, and the abundant haptoreaction of flue gas and absorption liquid forms CaSC
3.1/2H
2The O mixing material enters circulating slot C from absorption tower A bottom, during the gas distribution pipe Q aeration of aerating machine B in circulating slot C, this mixing material then oxidation forms the gypsum crystallization body, and circulating pump G makes absorption liquid reciprocation cycle between desulfurizing tower A and circulating slot C, and gypsum crystallization somaplasm liquid is discharged through discharge pipe N; The flue gas of band water smoke discharges by chimney I behind control and measuring after demister 9 is removed water smoke again.
2, flue gas desulfurizing process for heat and power boler according to claim 1 is characterized in that: blower fan H sends into absorption tower A with flue gas after by valve L; Flue gas after treatment enters chimney I from desulfurizing tower A through valve K; Blower fan H sends into chimney I with flue gas by valve J.
3, flue gas desulfurizing process for heat and power boler according to claim 1 is characterized in that: the absorption liquid in the circulating slot C stirs through agitator F.
4, flue gas desulfurizing process for heat and power boler according to claim 1 is characterized in that: the absorption liquid in the lime white hopper D stirs through agitator P.
5, the desulfurizing tower that is used for above-mentioned water-tube boiler flue gas desulfurization, it has housing (1), be respectively arranged with into mouth (8) on the housing (1), outlet flue (2) and blanking port (7), it is characterized in that: the demister (9) that is provided with at least one block of indention shape flap (10) is connected with housing (1), the pipeline (5) that is connected with housing (1) is installed in the bottom of demister (9), and single hole spiral nozzle (6) is connected with pipeline (5).
6, the desulfurizing tower of water-tube boiler flue gas desulfurization according to claim 5 is characterized in that: the water inlet pipe (4) that is connected with housing (1) is installed in the top of demister (9), and shower nozzle (3) is connected with water inlet pipe (4).
7, the desulfurizing tower of water-tube boiler flue gas desulfurization according to claim 5, it is characterized in that: said single hole spiral nozzle (6) is cone shape in the shape of a spiral, its middle and lower part is provided with at least one helical layer body (12), its top is provided with through hole (11), at least one helical layer body (12) is provided with the hole (13) that communicates with through hole (11), conveyor screw (12) bottom is the sealing shape, and the hole (13) on the conveyor screw (12) communicates with the space each other of each helical layer body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355754A CN1175919C (en) | 2002-09-26 | 2002-09-26 | Flue gas desulfurizing process for heat and power boler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355754A CN1175919C (en) | 2002-09-26 | 2002-09-26 | Flue gas desulfurizing process for heat and power boler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401413A true CN1401413A (en) | 2003-03-12 |
| CN1175919C CN1175919C (en) | 2004-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021355754A Expired - Fee Related CN1175919C (en) | 2002-09-26 | 2002-09-26 | Flue gas desulfurizing process for heat and power boler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642670B (en) * | 2009-08-28 | 2012-09-26 | 史剑武 | Rotational flow dust-removing desulfurization unit |
| CN102994170A (en) * | 2011-09-19 | 2013-03-27 | 于恩常 | Power-superposition swirl-type desulfurizing tower |
| CN103349957A (en) * | 2013-06-22 | 2013-10-16 | 湘潭市南方高新技术研究院 | Pan-bottom type oxidation and precipitation device in wet-process desulfurization of coal-fired flue gas |
| CN108310950A (en) * | 2018-04-10 | 2018-07-24 | 李威 | The device of processing is absorbed for industrial waste gas |
-
2002
- 2002-09-26 CN CNB021355754A patent/CN1175919C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642670B (en) * | 2009-08-28 | 2012-09-26 | 史剑武 | Rotational flow dust-removing desulfurization unit |
| CN102994170A (en) * | 2011-09-19 | 2013-03-27 | 于恩常 | Power-superposition swirl-type desulfurizing tower |
| CN103349957A (en) * | 2013-06-22 | 2013-10-16 | 湘潭市南方高新技术研究院 | Pan-bottom type oxidation and precipitation device in wet-process desulfurization of coal-fired flue gas |
| CN108310950A (en) * | 2018-04-10 | 2018-07-24 | 李威 | The device of processing is absorbed for industrial waste gas |
| CN108310950B (en) * | 2018-04-10 | 2019-02-01 | 李威 | The device of processing is absorbed for industrial waste gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1175919C (en) | 2004-11-17 |
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