CN102179152B - Flue gas (sulfur dioxide) desulfurization complete device - Google Patents
Flue gas (sulfur dioxide) desulfurization complete device Download PDFInfo
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- CN102179152B CN102179152B CN 201110083699 CN201110083699A CN102179152B CN 102179152 B CN102179152 B CN 102179152B CN 201110083699 CN201110083699 CN 201110083699 CN 201110083699 A CN201110083699 A CN 201110083699A CN 102179152 B CN102179152 B CN 102179152B
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- flue gas
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Abstract
The invention discloses a flue gas (sulfur dioxide) desulfurization complete device, comprising a flue gas input pipe, a boosting fan, an absorbing tower, an absorption liquid supplying unit, a fluid conveying pump, a first distilling and concentrating tower, an auto-oxidation-reduction tower, a second distilling and concentrating tower and a solid-liquid separating machine, wherein the flue gas input pipe is communicated with an inner cavity of the absorbing tower by the boosting fan; a spraying device at the inner cavity of the absorbing tower is connected with the absorption liquid supplying unit; a discharging pipe of the absorbing tower is connected with the first distilling and concentrating tower by the fluid conveying pump; the first distilling and concentrating tower, the auto-oxidation-reduction tower, the second distilling and concentrating tower and the solid-liquid separating machine are distributed in a series-connection manner; and sulfur mud containing the sulfur element is obtained from a solid-phase discharging port of the solid-liquid separating machine, and a sodium sulfate liquid is obtained from a liquid-phase discharging port. The flue gas desulfurization complete device can be matched with the existing flue gas (sulfur dioxide) adjusting and treating equipment and sodium sulfate regenerating equipment, and the purpose of using a sodium sulfate solution to carry out circulating desulfurization on flue gas (sulfur dioxide) so as to change sulfur dioxide into the sulfur element can be achieved.
Description
Technical field:
The present invention relates to a kind of desulfur technology of sulfur dioxide flue gas, relate in particular to the complexes of sulfur dioxide FGD.
Background technology:
The applicant is the method that discloses a kind of low-concentration sulfur dioxide flue gas circulation desulfuration in 200910027266.4 in the patent No..This desulfurization process is divided into: flue gas is regulated, SO
2Absorption, automatic oxidation reduction, vulcanized sodium regeneration Four processes are with Na
2S solution is absorption liquid, fully contacts with the flue gas that contains sulfur dioxide, and making Sulphur Dioxide is Na
2S
2O
3And NaHSO
3Enter in the solution, the condition of control solution, allow it that automatic oxidation reduction reaction occurs, sulphur in the solution is converted into elementary sulfur and sulfate, liquid-solid separation obtains solid state component sulphur and metabisulfite solution, adopts crystallisation crystallization from solution to go out sodium sulphate, adopts carbon or CO reduction to make vulcanized sodium, return the absorption operation, the chemical equation of this sulfur removal technology is as follows:
Sulfur dioxide through the main reaction equation that sodium sulfide solution absorbs the output elementary sulfur is:
8SO
2+4Na
2S→8S+4Na
2SO
4
Vulcanized sodium regeneration: 4Na
2SO
4+ 16CO → 4Na
2S+16CO
2
In this sulfur removal technology, sulfur dioxide flue gas adjusting processing and vulcanized sodium regeneration there is ripe equipment, for how utilizing sodium sulfide solution to come the sulfur dioxide absorption flue gas, making it to produce elementary sulfur and sodium sulphate becomes the key of this sulfur removal technology, does not also have at present relevant device to realize industrialization.
Industrializing implementation for the ease of this sulfur removal technology, the applicant is through the research of long period, developed the complexes that utilize vulcanized sodium to process sulfur dioxide flue gas generting element sulphur and sodium sulphate, it supports the use with existing sulfur dioxide flue gas adjusting treatment facility and vulcanized sodium reclaim equiment just can realize patent of invention 200910027266.4 industrialization.
Summary of the invention:
The purpose of this invention is to provide a kind of complete device for sulfur dioxide FGD, it is to utilize sodium sulfide solution to process sulfur dioxide flue gas, makes the industrialization industrial equipment of its generting element sulphur and sodium sulphate when finishing flue gas desulfurization.
The technical scheme that the present invention takes is:
A kind of complete device for sulfur dioxide FGD, comprise the flue gas input pipe, booster fan, the absorption tower, the absorption liquid feeding unit, the liquid delivery pump, the first distillation and concentration tower, condenser, collecting-tank, the automatic oxidation reduction tower, the after-fractionating concentration tower, solid-liquid separating machine, raw liquor pump and sodium sulfide solution basin, the flue gas input pipe interlinks through the inner chamber on booster fan and absorption tower, inner cavity top on the absorption tower is provided with spray equipment, spray equipment is connected with the absorption liquid feeding unit, raw liquor pump is arranged between sodium sulfide solution basin and the absorption liquid feeding unit, the discharge nozzle on absorption tower links to each other with the first distillation and concentration tower through the liquid delivery pump, the escape pipe of the first distillation and concentration tower links to each other with collecting-tank behind condenser, the discharge nozzle of the first distillation and concentration tower is linked to each other with the automatic oxidation reduction tower by the liquid delivery pump, the discharge nozzle of automatic oxidation reduction tower links to each other with the after-fractionating concentration tower, the escape pipe of after-fractionating concentration tower links to each other with collecting-tank through condenser, the discharge nozzle of after-fractionating concentration tower is linked to each other with solid-liquid separating machine by the liquid delivery pump, obtain to contain the sulphur mud of elementary sulfur from the solid phase discharging opening of solid-liquid separating machine, obtain metabisulfite solution from the liquid phase discharging opening of solid-liquid separating machine.
This covering device has been arranged, just can support the use with existing sulfur dioxide flue gas adjusting treatment facility and vulcanized sodium reclaim equiment, realization is with the circulation desulfurization of sodium sulfide solution to sulfur dioxide flue gas, sulfur dioxide is become elementary sulfur, make patent of invention 200910027266.4 really push industrial applications to.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Among the figure: 1-flue gas input pipe; The 2-booster fan; The 3-absorption tower; 4-absorption liquid feeding unit; 5-liquid delivery pump; 6-the first distillation and concentration tower; The 7-condenser; The 8-collecting-tank; 9-automatic oxidation reduction tower; 10-after-fractionating concentration tower; The 11-solid-liquid separating machine; The 12-raw liquor pump; 13-sodium sulfide solution basin; 14-vulcanized sodium reclaim equiment; 15-sulphur equipment for purifying; The 31-spray equipment.
The specific embodiment:
Below in conjunction with description of drawings the specific embodiment of the present invention:
A kind of complete device for sulfur dioxide FGD, comprise flue gas input pipe 1, booster fan 2, absorption tower 3, absorption liquid feeding unit 4, liquid delivery pump 5, the first distillation and concentration tower 6, condenser 7, collecting-tank 8, automatic oxidation reduction tower 9, after-fractionating concentration tower 10, solid-liquid separating machine 11, raw liquor pump 12 and sodium sulfide solution basin 13, flue gas input pipe 1 interlinks through the inner chamber of booster fan 2 with absorption tower 3,3 inner cavity top is provided with spray equipment 31 on the absorption tower, spray equipment 31 is connected with absorption liquid feeding unit 4, raw liquor pump 12 is arranged between sodium sulfide solution basin 13 and the absorption liquid feeding unit 4, the discharge nozzle on absorption tower 3 links to each other with the first distillation and concentration tower 6 through liquid delivery pump 5, the escape pipe of the first distillation and concentration tower 6 links to each other with collecting-tank 8 behind condenser 7, the discharge nozzle of the first distillation and concentration tower 6 is linked to each other with automatic oxidation reduction tower 9 by liquid delivery pump 5, the discharge nozzle of automatic oxidation reduction tower 9 links to each other with after-fractionating concentration tower 10, the escape pipe of after-fractionating concentration tower 10 links to each other with collecting-tank 8 through condenser 7, the discharge nozzle of after-fractionating concentration tower 10 is linked to each other with solid-liquid separating machine 11 by liquid delivery pump 5, obtain to contain the sulphur mud of elementary sulfur from the solid phase discharging opening of solid-liquid separating machine 11, obtain metabisulfite solution from the liquid phase discharging opening of solid-liquid separating machine 11.
The course of work of the present invention is as follows:
Sulfur dioxide flue gas is inputted in the absorption towers 3 by flue gas input pipe 1, booster fan 2 after regulating the treatment facility processing through sulfur dioxide flue gas, vulcanized sodium absorption liquid in the sodium sulfide solution basin 13 is defeated by absorption liquid feeding unit 4 by raw liquor pump 12, absorption liquid feeding unit 4 is with stir spray equipment 31 in the rear input with pressure absorption tower 3 of vulcanized sodium absorption liquid, sodium sulfide solution is fully contacted, generting element sulphur, Na after absorbing by multitower with sulfur dioxide flue gas
2S
2O
3And NaHSO
3Mixture, then by liquid delivery pump 5 mixture is inputted that to carry out spontaneous evaporation in the first distillation and concentration tower 6 concentrated, the water vapour that spontaneous evaporation produces in this process flows in the collecting-tank 8 through condenser 7, mixed material after concentrated is again in another liquid delivery pump 5 input automatic oxidation reduction towers 9, control automatic oxidation reduction condition makes the Na in the mixture
2S
2O
3, NaHSO
3, Na
2S is by automatic oxidation reduction reaction generting element sulphur and sodium sulphate, after reaction finishes, with liquid delivery pump 5 mixed material is inputted in the after-fractionating concentration tower 10 again, be pressed into after mixture is concentrated through further spontaneous evaporation in after-fractionating concentration tower 10 and carry out Separation of Solid and Liquid in the solid-liquid separating machine 11, thereby isolate the sulphur mud and the metabisulfite solution that contain elementary sulfur, make it enter vulcanized sodium reclaim equiment 14.The vulcanized sodium regenerative process is exactly the process of producing vulcanized sodium from metabisulfite solution, pass through first evaporative crystallization, obtain the sodium sulphate slip, sodium sulphate is reduced into vulcanized sodium in high temperature reduction atmosphere, and reducing agent can be selected respectively coal, coke, oven gas, hydrogen etc. according to industry characteristic.For example for the situation of the characteristics of iron and steel enterprise and oven gas surplus and consider economic benefit, select oven gas as reducing agent.The at present production of vulcanized sodium all obtains with reducing agent reduction sodium sulphate, so this process is in industrial what problem that do not exist.The vulcanized sodium that regenerates, the absorbent that can be used as new generation drops in the sulfur dioxide FGD technique and recycles, and isolated elementary sulfur sulphur mud is then sent into sulphur equipment for purifying 15 and is carried out centrifugal drying and obtain pure product sulphur.
Claims (1)
1. complete device for sulfur dioxide FGD, it is characterized in that: comprise flue gas input pipe (1), booster fan (2), absorption tower (3), absorption liquid feeding unit (4), liquid delivery pump (5), the first distillation and concentration tower (6), condenser (7), collecting-tank (8), automatic oxidation reduction tower (9), after-fractionating concentration tower (10), solid-liquid separating machine (11), raw liquor pump (12) and sodium sulfide solution basin (13), flue gas input pipe (1) interlinks through the inner chamber of booster fan (2) with absorption tower (3), the inner cavity top of (3) is provided with spray equipment (31) on the absorption tower, spray equipment (31) is connected with absorption liquid feeding unit (4), raw liquor pump (12) is arranged between sodium sulfide solution basin (13) and the absorption liquid feeding unit (4), the discharge nozzle on absorption tower (3) links to each other with the first distillation and concentration tower (6) through liquid delivery pump (5), the escape pipe of the first distillation and concentration tower (6) links to each other with collecting-tank (8) behind condenser (7), the discharge nozzle of the first distillation and concentration tower (6) is linked to each other with automatic oxidation reduction tower (9) by liquid delivery pump (5), the discharge nozzle of automatic oxidation reduction tower (9) links to each other with after-fractionating concentration tower (10), the escape pipe of after-fractionating concentration tower (10) links to each other with collecting-tank (8) through condenser (7), the discharge nozzle of after-fractionating concentration tower (10) is linked to each other with solid-liquid separating machine (11) by liquid delivery pump (5), obtain to contain the sulphur mud of elementary sulfur from the solid phase discharging opening of solid-liquid separating machine (11), obtain metabisulfite solution from the liquid phase discharging opening of solid-liquid separating machine (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110083699 CN102179152B (en) | 2011-04-02 | 2011-04-02 | Flue gas (sulfur dioxide) desulfurization complete device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110083699 CN102179152B (en) | 2011-04-02 | 2011-04-02 | Flue gas (sulfur dioxide) desulfurization complete device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102179152A CN102179152A (en) | 2011-09-14 |
| CN102179152B true CN102179152B (en) | 2013-01-23 |
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ID=44565554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110083699 Expired - Fee Related CN102179152B (en) | 2011-04-02 | 2011-04-02 | Flue gas (sulfur dioxide) desulfurization complete device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102179152B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500201A (en) * | 2011-11-12 | 2012-06-20 | 周建茗 | Sulfur dioxide flue gas recirculation desulfuration complete device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025147B2 (en) * | 1994-05-17 | 2000-03-27 | 三菱重工業株式会社 | Wet flue gas desulfurization equipment |
| CN1462647A (en) * | 2003-06-16 | 2003-12-24 | 华南理工大学 | Method for desulfurizing industrial smoke containing sulfur dioxide |
| CN202061543U (en) * | 2011-04-02 | 2011-12-07 | 周建茗 | Complete device for sulfur dioxide FGD |
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2011
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| CN102179152A (en) | 2011-09-14 |
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Granted publication date: 20130123 Termination date: 20200402 |