CN204193778U - A kind of double absorption column series connection flue gas desulfur device - Google Patents
A kind of double absorption column series connection flue gas desulfur device Download PDFInfo
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- CN204193778U CN204193778U CN201420601771.1U CN201420601771U CN204193778U CN 204193778 U CN204193778 U CN 204193778U CN 201420601771 U CN201420601771 U CN 201420601771U CN 204193778 U CN204193778 U CN 204193778U
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Abstract
A kind of double absorption column series connection flue gas desulfur device, belongs to thermal power plant wet process of FGD equipment technical field, for improving the desulfuration efficiency of wet process of FGD equipment.Its technical scheme is: it comprises two-stage absorption tower, the gas approach of first grade absorption tower is connected with air-introduced machine, the exhanst gas outlet of first grade absorption tower has flue to be connected with the gas approach of two-level absorption tower, first grade absorption tower and two-level absorption tower have overflow pipe to be connected, two-level absorption tower and first grade absorption tower have forced circulation pipeline to be connected, forced circulation pipeline is provided with forced circulation pump, and two-level absorption tower is connected with chimney.The utility model can ensure that desulfurization entrance so2 concentration is 4458
when, desulfuration efficiency can reach more than 99.22%, and desulfurization outlet SO2 concentration is not higher than 35
.The utility model structure is simple, stable, effectively can improve the reliability and stability of desulfuration efficiency and desulfurization, meet the requirement of new discharge standard.
Description
Technical field
The present invention relates to a kind of double absorption column with forced circulation series connection flue gas desulfur device, belong to thermal power plant wet process of FGD equipment technical field.
Background technology
Absorption tower is the visual plant of thermal power plant wet process of FGD, the functions such as the crystallization of absorption tower primary responsibility desulfurization, oxidation, gypsum and generation.Be provided with the equipment such as spraying layer, demister, slurry circulating pump, gypsum excavationg pump in common absorption tower, flue gas is passed in absorption tower by air-introduced machine and carries out desulfurization process.
Along with the continuous reinforcement of administering environmental ecology and country are to the enforcement of key industry atmosphere pollution undertaking treatment within a prescribed limit of time scheme, a lot of thermal power plant belongs to the key industry enterprise of undertaking treatment within a prescribed limit of time, existing wet desulfurization system can not meet new discharge standard requirement, therefore will upgrade to existing wet desulfurization system and transform.Carrying out in device upgrade and transformation process, a kind of scheme adopts single absorption tower to increase, increase spraying layer scheme, and this scheme need carry out cutting integral raising to original absorption tower, and the required compressor emergency shutdown time is longer, and difficulty of construction is larger.Another kind of scheme is the quantity increasing absorption tower, but by finding the investigation of domestic single tower desulfurization equipment, single absorption tower under equal entrance so2 concentration operating mode, rarer desulfuration efficiency can long-term stability more than 99%, reliability and stability are not high.The more important thing is, the regulation of the special emission limit of new atmosphere pollution requires SO2 concentration of emission 35
, this just requires that improved desulphurization system efficiency is greater than 99.22%, and the desulfuration efficiency on obvious existing single absorption tower can not meet the requirement of new discharge standard, and other measure must be taked to be improved.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of double absorption column series connection flue gas desulfur device, this double absorption column series connection flue gas desulfur device can improve desulfuration efficiency, and improve the reliability and stability of desulfurization, meet the requirement of new discharge standard, the sulphur coal of relative low price can be used simultaneously, effectively reduce the fuel cost of power plants generating electricity.
The technical scheme solved the problems of the technologies described above is:
A kind of double absorption column series connection flue gas desulfur device, it comprises two-stage absorption tower, two-stage absorption tower is connected in series, the gas approach of first grade absorption tower is connected with the air-introduced machine of supplied flue gases, the exhanst gas outlet of first grade absorption tower has flue to be connected with the gas approach of two-level absorption tower, overflow pipe is had to be connected between first grade absorption tower with two-level absorption tower, forced circulation pipeline is had to be connected between two-level absorption tower with first grade absorption tower, forced circulation pipeline is provided with forced circulation pump, two-level absorption tower there is flue gas discharge opening be connected with chimney by flue.
Above-mentioned double absorption column series connection flue gas desulfur device, described first grade absorption tower and two-level absorption tower are respectively equipped with three layers of spraying layer, first grade absorption tower and two-level absorption tower are separately installed with slurry circulating pump, first grade absorption tower arranges one-level demister, two-level absorption tower arranges two-stage demister, and the bottom of first grade absorption tower is provided with gypsum excavationg pump.
The beneficial effects of the utility model are:
The utility model adopts double absorption column series connection desulfurization program, when the desulfurization of single-stage absorption tower is difficult to meet discharge index, boiler smoke is carried out desulfurization by the absorption tower of two series connection successively.Advantage one of the present utility model is that desulfuration efficiency is high, and double tower desulfurization tandem arrangement can ensure that desulphurization system entrance so2 concentration is 4458
when, desulfuration efficiency can reach more than 99.22%, and desulfurization outlet SO2 concentration is not higher than 35
; Two is that slurries function division is optimized and strengthens, control device reaction process more subtly, the control of two absorption tower cyclic processes is independently, the requirement of different device stage to different slurries character can be met, avoid the mutual restriction between parameter, make course of reaction more scientific and reasonable.First stage tower circulation can remove the impurity such as dust, HF carried in flue gas, greatly reduces the reaction impact that these impurity circulate on secondary tower, improves secondary tower desulfuration efficiency; Three is widened boiler fired coal interval, can use the sulphur coal of relative low price, effectively reduce the fuel cost of power plants generating electricity.The utility model structure is simple, stable, is the successful modification of thermal power plant wet process of FGD equipment, effectively can improves desulfuration efficiency, and improve the reliability and stability of desulfurization, meet the requirement of new discharge standard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, mark is as follows: first grade absorption tower 1, two-level absorption tower 2, air-introduced machine 3, flue 4, overflow pipe 5, forced circulation pipeline 6, forced circulation pump 7, spraying layer 8, serum recycle pipeline 9, slurry circulating pump 10, gypsum excavationg pump 11.
Detailed description of the invention
The utility model comprises two-stage absorption tower, and two-stage absorption tower is connected in series.First grade absorption tower 1 undertakes the function such as crystallization and generation of first grade desulfurizing, oxidation, gypsum, and two-level absorption tower 2 undertakes the function such as crystallization and generation of two-grade desulfurizing, oxidation, gypsum.
Show in figure, the gas approach of first grade absorption tower 1 is connected with the air-introduced machine 3 of supplied flue gases, exhanst gas outlet and the gas approach of two-level absorption tower 2 of first grade absorption tower 1 have flue 4 to be connected, and two-level absorption tower 2 have flue gas discharge opening be connected with chimney by flue 4.Flue gas enters first grade absorption tower 1 and carries out preliminary desulfurization, and the flue gas after desulfurization enters two-level absorption tower 2 again and carries out secondary deep desulfurization, completes the flue gas after desulfurization and enters air from chimney.
Show in figure, have overflow pipe 5 to be connected between first grade absorption tower 1 with two-level absorption tower 2, first grade absorption tower 1 slurries pass through overflow pipe 5 to two-level absorption tower 2 overflow, to realize grout replacement.
Show in figure, have forced circulation pipeline 6 to be connected between two-level absorption tower 2 with first grade absorption tower 1, forced circulation pipeline 6 is provided with forced circulation pump 7.Two-level absorption tower 2 supplies slurry by forced circulation pump 7 to first grade absorption tower 1, realizes forced circulation.
Show in figure, first grade absorption tower 1 and two-level absorption tower 2 are respectively equipped with three, four layers of spraying layer 8, and first grade absorption tower 1 and two-level absorption tower 2 are separately installed with slurry circulating pump 10, and slurries are driven into spraying layer 8 by serum recycle pipeline 9 by slurry circulating pump 10.First grade absorption tower 1 arranges one-level demister, and two-level absorption tower 2 arranges two-stage demister, and the bottom of first grade absorption tower 1 is provided with gypsum excavationg pump 11, and the bottom of two-level absorption tower 2 does not have gypsum excavationg pump.
The utility model can ensure that desulphurization system entrance so2 concentration is 4458
when, desulfuration efficiency can reach more than 99.22%, and desulfurization outlet SO2 concentration is not higher than 35
.
An embodiment of the present utility model is as follows:
The type of first grade absorption tower 1 is spray column, tower body size 16.5m × 36.8m, enclosure material: carbon steel+scale resin: Q235B steel, weight 450T.
First grade absorption tower 1 arranges the carborundum nozzle of 600 flow 50.7m3/h altogether, the oxidation air alloy spray gun of 4 DN150.
First grade absorption tower 1 arranges 3 slurry circulating pumps 10, slurry circulating pump 10 and absorption tower interface diameter DN1300, pump flow is 10140m3/h, and lift is respectively 20.5/22.5/24.5m water column, and the setting height(from bottom) of corresponding spraying layer 8 is respectively 20.5/22.5/24.5m.
First grade absorption tower 1 arranges gypsum excavationg pump 11, the interface diameter DN250 of gypsum excavationg pump 11, flow 300m3/h, lift 40m.
One deck ridge type demister is installed, diameter 16.5m in first grade absorption tower 1.2 layers of mist eliminator flushing water are set altogether, every layer of 14 valve, amount to 28 flushing water electrically operated valves, with absorption tower interface dimension D N100.
First grade absorption tower 1 slurries pass through overflow pipe 5 to two-level absorption tower 2 overflow, to realize grout replacement.
The type of two-level absorption tower 2 is spray column, tower body size 16.5m × 37.38m, enclosure material: carbon steel+scale resin: Q235B steel, weight 500T.
Two-level absorption tower 2 arranges the carborundum nozzle of 752 47.3m3/h altogether, the oxidation air alloy spray gun of 4 DN150.
Two-level absorption tower 2 arranges 4 slurry circulating pumps 10, slurry circulating pump 10 and absorption tower interface diameter DN1200, and lift is respectively 20.5/22.3/24.1/25.9m water column, and corresponding spraying layer 8 setting height(from bottom) is respectively 20.5/22.3/24.1/25.9m.
Two-level absorption tower 2 does not arrange gypsum excavationg pump, but supplies slurry by forced circulation pump 7 to first grade absorption tower 1, forced circulation pump 7 and absorption tower interface diameter DN250, flow 300m3/h, lift 10m.
In two-level absorption tower 2, one deck tubular type+two-layer ridge type demister is installed, diameter 16.5m.
Two-level absorption tower 2 arranges 3 layers of flushing water altogether, every layer of 14 valve, amounts to 42 flushing water electrically operated valves, with absorption tower interface dimension D N100.
Slurries continuous circulation in first grade absorption tower 1 and two-level absorption tower 2 runs, and in two absorption towers, the operational factor such as the pH value of slurries and density is basically identical.First grade absorption tower 1 and two-level absorption tower 2 connecting pipe internal diameter DN400, first grade absorption tower 1 interface absolute altitude 12m, two-level absorption tower 2 absolute altitude 10m, connecting pipe angle is 10 °, total length 22m.
Claims (2)
1. a double absorption column series connection flue gas desulfur device, it is characterized in that: it comprises two-stage absorption tower, two-stage absorption tower is connected in series, the gas approach of first grade absorption tower (1) is connected with the air-introduced machine (3) of supplied flue gases, exhanst gas outlet and the gas approach of two-level absorption tower (2) of first grade absorption tower (1) have flue (4) to be connected, overflow pipe (5) is had to be connected between first grade absorption tower (1) with two-level absorption tower (2), forced circulation pipeline (6) is had to be connected between two-level absorption tower (2) with first grade absorption tower (1), forced circulation pipeline (6) is provided with forced circulation pump (7), two-level absorption tower (2) there is flue gas discharge opening be connected with chimney by flue (4).
2. double absorption column series connection flue gas desulfur device according to claim 1, it is characterized in that: described first grade absorption tower (1) and two-level absorption tower (2) are respectively equipped with three layers of spraying layer (8), first grade absorption tower (1) and two-level absorption tower (2) are separately installed with slurry circulating pump (10), first grade absorption tower (1) arranges one-level demister, two-level absorption tower (2) arranges two-stage demister, and the bottom of first grade absorption tower (1) is provided with gypsum and discharges (11) pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601771.1U CN204193778U (en) | 2014-10-17 | 2014-10-17 | A kind of double absorption column series connection flue gas desulfur device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601771.1U CN204193778U (en) | 2014-10-17 | 2014-10-17 | A kind of double absorption column series connection flue gas desulfur device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204193778U true CN204193778U (en) | 2015-03-11 |
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| CN201420601771.1U Expired - Fee Related CN204193778U (en) | 2014-10-17 | 2014-10-17 | A kind of double absorption column series connection flue gas desulfur device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214463A (en) * | 2015-09-25 | 2016-01-06 | 江苏苏博特新材料股份有限公司 | A kind of processing method of aliphatic hydroxyl sulphonate water reducer process gas |
| CN106110868A (en) * | 2016-08-16 | 2016-11-16 | 安徽盛运重工机械有限责任公司 | A kind of DC combination tower sulfur dioxide treatment system |
| CN112604469A (en) * | 2020-11-27 | 2021-04-06 | 聂鹏飞 | PH measuring device for desulfurization |
-
2014
- 2014-10-17 CN CN201420601771.1U patent/CN204193778U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214463A (en) * | 2015-09-25 | 2016-01-06 | 江苏苏博特新材料股份有限公司 | A kind of processing method of aliphatic hydroxyl sulphonate water reducer process gas |
| CN106110868A (en) * | 2016-08-16 | 2016-11-16 | 安徽盛运重工机械有限责任公司 | A kind of DC combination tower sulfur dioxide treatment system |
| CN112604469A (en) * | 2020-11-27 | 2021-04-06 | 聂鹏飞 | PH measuring device for desulfurization |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20171017 |