CN101590366A - A kind of wet flue gas desulfurizer and control method thereof - Google Patents
A kind of wet flue gas desulfurizer and control method thereof Download PDFInfo
- Publication number
- CN101590366A CN101590366A CNA2008101126143A CN200810112614A CN101590366A CN 101590366 A CN101590366 A CN 101590366A CN A2008101126143 A CNA2008101126143 A CN A2008101126143A CN 200810112614 A CN200810112614 A CN 200810112614A CN 101590366 A CN101590366 A CN 101590366A
- Authority
- CN
- China
- Prior art keywords
- fluid column
- layer
- column layer
- circulating pump
- spraying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A kind of wet flue gas desulfurizer and control method thereof relate to the thermal power plant wet process of FGD technology of environmental technology field.Desulfurizer of the present invention comprises the absorption tower of being with demister.The upper and lower side on absorption tower is respectively arranged with densitometer measuring device, pH value meter and plaster slurry pump.In the absorption tower, smoke inlet top is provided with the fluid column layer, the fluid column layer forms self-loopa by the fluid column layer circulating pump that is connected in the stock tank.Its design feature is that described fluid column layer top, demister below are provided with two-layer spraying layer.Each layer spraying layer forms self-loopa by a spraying layer circulating pump that is connected in the stock tank.Described fluid column layer is one deck, and the fluid column layer circulating pump that is connected with the fluid column layer is three or four.The present invention has the advantages that applicable to the needs of different sulfur content ature of coal coals equipment investment is few, the occupation of land space is little, transformation is simple, stable.
Description
Technical field
The present invention relates to thermal power plant wet process of FGD technology, particularly wet flue gas desulfurizer and the control method thereof of environmental technology field.
Background technology
For environmental protection requirement, reduce the discharge capacity of SO2 in the power-plant flue gas, many in recent years power plant have increased flue gas desulfur device, wherein especially are most widely used with the limestone-gypsum wet desulphurization device.And in wet method lime stone flue gas desulfurization technique, again void tower structures such as spray column and liquid column tower that adopt more.Reason is that this type absorption tower is relatively simple for structure, and the probability of tower inner member generation fouling, obstruction is relatively low.Reliable and maintenance load seldom thereby is able to actual popularization than higher, system stability to install availability in addition.Spray column has comparative advantage in all desulfuration absorbing towers, and the achievement of long-time running is arranged; Liquid column tower is the new tower that last century, the nineties was come out, and achievement is still few, also needs to sum up perfect.
In the prior art, domestic part power plant has built wet desulphurization device and has adopted liquid column tower.But because the variation of coal-fired ature of coal uses the sulphur coal that sulfur content is higher than the desulphurization system design load, can cause the phenomenon that system's desulfurization degree is low, the outlet sulfur dioxide emissioning concentration exceeds standard, therefore need carry out existing liquid column tower is carried out extending capacity reformation.At the extending capacity reformation of building the fluid column desulfurizer, if still only continue to use jet method, so corresponding fluid column spraying layer, circulating pump and absorption tower body etc. all will be transformed, and cost of investment and quantities etc. undoubtedly all can be bigger.
Summary of the invention
In order to solve the problem that the jet method desulfurization exists in the above-mentioned prior art, the purpose of this invention is to provide a kind of wet flue gas desulfurizer and control method thereof.It has the advantages that applicable to the needs of different sulfur content ature of coal coals equipment investment is few, the occupation of land space is little, transformation is simple, stable.
In order to reach the foregoing invention purpose, technical scheme of the present invention realizes as follows:
A kind of wet flue gas desulfurizer, it comprises the absorption tower of being with demister.The upper and lower side on absorption tower is respectively arranged with densitometer measuring device, pH value meter and plaster slurry pump.In the absorption tower, smoke inlet top is provided with the fluid column layer, the fluid column layer forms self-loopa by the fluid column layer circulating pump that is connected in the stock tank.Its design feature is that described fluid column layer top, demister below are provided with two-layer spraying layer.Each layer spraying layer forms self-loopa by a spraying layer circulating pump that is connected in the stock tank.Described fluid column layer is one deck, and the fluid column layer circulating pump that is connected with the fluid column layer is three or four.
Realize the control method of above-mentioned wet process of FGD sulphur device, its key step is:
1. by control module sulfur dioxide concentration, exhaust gas volumn, desulfuration efficiency, calcium sulfur ratio, pH value, the density signal of desulphurization system are analyzed, calculated the liquid-gas ratio of required loop slurry;
2. when the liquid-gas ratio of required loop slurry during less than the pairing loop slurry liquid-gas ratio of fluid column layer, close the spraying layer circulating pump of top spraying layer correspondence, and adjust the pairing fluid column layer of fluid column layer circulating pump firing platform number according to desulfurization degree and clean SO 2 from fume concentration situation;
3. when the liquid-gas ratio of required loop slurry during greater than the pairing loop slurry liquid-gas ratio of fluid column layer, start whole fluid column layer circulating pump of fluid column layer correspondence, and adjust the used number of plies of spraying layer and open the spraying layer circulating pump corresponding with this spraying layer according to desulfurization degree and clean SO 2 from fume concentration situation.
The present invention has arranged spraying layer owing to adopted technique scheme again above the fluid column layer in the absorption tower.When desulphurization system was normally moved, original fluid column system still normally came into operation; When the indexs such as sulfur content of desulphurization system are higher than original design load operation, when keeping normal input of original fluid column system, start spray system, thereby guarantee desulphurization system stable operation under the operating mode that is higher than desulphurization system sulfur dioxide design load.The present invention can improve the adaptability of original liquid column tower desulfurizer, satisfies the needs of different sulfur content ature of coal coals, and it is few to have an equipment investment, and it is little to take up room, transform simple and practical, the convenient stable characteristics of operation.
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is a control flow chart of the present invention.
The specific embodiment
Referring to Fig. 1, desulfurizer of the present invention comprises the absorption tower 1 of being with demister 5.The upper and lower side on absorption tower 1 is respectively arranged with densitometer measuring device 2, pH value meter 3 and plaster slurry pump 4.In the absorption tower 1, smoke inlet 8 tops are provided with one deck fluid column layer 9, fluid column layer 9 forms self-loopas by being connected in the stock tank three or four fluid column layer circulating pumps 6.Fluid column layer 9 top, demister 5 belows are provided with two-layer spraying layer 10, and each layer spraying layer 10 forms self-loopa by a spraying layer circulating pump 7 that is connected in the stock tank.
Referring to Fig. 2, the control method step of the multiple desulfurizer of the present invention is:
1. by control module sulfur dioxide concentration, exhaust gas volumn, desulfuration efficiency, calcium sulfur ratio, pH value, the density signal of desulphurization system are analyzed, calculated the liquid-gas ratio of required loop slurry;
2. when the liquid-gas ratio of required loop slurry during less than the pairing loop slurry liquid-gas ratio of fluid column layer 9, close the spraying layer circulating pump 7 of top spraying layer 10 correspondences, and adjust the fluid column layer circulating pump 6 firing platform numbers of fluid column layer 9 correspondence according to desulfurization degree and clean SO 2 from fume concentration situation;
3. when the liquid-gas ratio of required loop slurry during greater than the pairing loop slurry liquid-gas ratio of fluid column layer 9, start whole fluid column layer circulating pump 6 of fluid column layer 9 correspondence, and adjust the used number of plies of spraying layer 10 and open the spraying layer circulating pump 7 corresponding with this spraying layer 10 according to desulfurization degree and clean SO 2 from fume concentration situation.
Claims (2)
1, a kind of wet flue gas desulfurizer, it comprises the absorption tower (1) of band demister (5), the upper and lower side on absorption tower (1) is respectively arranged with densitometer measuring device (2), pH value meter (3) and plaster slurry pump (4), in the absorption tower (1), smoke inlet (8) top is provided with fluid column layer (9), fluid column layer (9) forms self-loopa by the fluid column layer circulating pump (6) that is connected in the stock tank, it is characterized in that, described fluid column layer (9) top, demister (5) below is provided with two-layer spraying layer (10), each layer spraying layer (10) forms self-loopa by a spraying layer circulating pump (7) that is connected in the stock tank, described fluid column layer (9) is one deck, and the fluid column layer circulating pump (6) that is connected with fluid column layer (9) is three or four.
2, realize the control method of wet flue gas desulfurizer as claimed in claim 1, its key step is:
1. by control module sulfur dioxide concentration, exhaust gas volumn, desulfuration efficiency, calcium sulfur ratio, pH value, the density signal of desulphurization system are analyzed, calculated the liquid-gas ratio of required loop slurry;
2. when the liquid-gas ratio of required loop slurry during less than the pairing loop slurry liquid-gas ratio of fluid column layer (9), close the corresponding spraying layer circulating pump (7) of top spraying layer (10), and adjust fluid column layer (9) pairing fluid column layer circulating pump (6) firing platform number according to desulfurization degree and clean SO 2 from fume concentration situation;
3. when the liquid-gas ratio of required loop slurry during greater than the pairing loop slurry liquid-gas ratio of fluid column layer (9), start the corresponding whole fluid column layer circulating pump (6) of fluid column layer (9), and adjust the used number of plies of spraying layer (10) and open the spraying layer circulating pump (7) corresponding with this spraying layer (10) according to desulfurization degree and clean SO 2 from fume concentration situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101126143A CN101590366B (en) | 2008-05-26 | 2008-05-26 | Wet method fume desulfurizing device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101126143A CN101590366B (en) | 2008-05-26 | 2008-05-26 | Wet method fume desulfurizing device and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101590366A true CN101590366A (en) | 2009-12-02 |
| CN101590366B CN101590366B (en) | 2012-02-29 |
Family
ID=41405363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101126143A Active CN101590366B (en) | 2008-05-26 | 2008-05-26 | Wet method fume desulfurizing device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101590366B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974201A (en) * | 2011-08-08 | 2013-03-20 | 同方环境股份有限公司 | Double pH adjustment flue gas desulphurization system and control method thereof |
| CN104226102A (en) * | 2014-09-23 | 2014-12-24 | 云南云铝润鑫铝业有限公司 | Horizontal spraying and desulfurizing device and method for aluminum electrolysis fume |
| CN107376628A (en) * | 2017-09-20 | 2017-11-24 | 大唐环境产业集团股份有限公司 | A kind of adjusting type desulfuration absorbing tower suitable for multi-state |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635194Y (en) * | 2003-08-26 | 2004-08-25 | 天津市东方暖通设备股份合作公司 | Spent alkaline liquid desulfur reaction tower |
| CN2707356Y (en) * | 2004-06-21 | 2005-07-06 | 樊金鑫 | Composite double-spraying self-cleaning type large-scale flue gas desulfurization apparatus |
| CN2845897Y (en) * | 2005-12-09 | 2006-12-13 | 吴金泉 | Liquid-column tower smoke desulfurizing device |
| CN201200862Y (en) * | 2008-05-26 | 2009-03-04 | 同方环境股份有限公司 | Desulfurizing device suitable for wet flue gas desulfurization |
-
2008
- 2008-05-26 CN CN2008101126143A patent/CN101590366B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974201A (en) * | 2011-08-08 | 2013-03-20 | 同方环境股份有限公司 | Double pH adjustment flue gas desulphurization system and control method thereof |
| CN102974201B (en) * | 2011-08-08 | 2014-07-02 | 同方环境股份有限公司 | Double pH adjustment flue gas desulphurization system and control method thereof |
| CN104226102A (en) * | 2014-09-23 | 2014-12-24 | 云南云铝润鑫铝业有限公司 | Horizontal spraying and desulfurizing device and method for aluminum electrolysis fume |
| CN104226102B (en) * | 2014-09-23 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminium electrolytic flue horizontal spraying desulfurizer and method |
| CN107376628A (en) * | 2017-09-20 | 2017-11-24 | 大唐环境产业集团股份有限公司 | A kind of adjusting type desulfuration absorbing tower suitable for multi-state |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101590366B (en) | 2012-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101298020B (en) | Desulfuration spray tower with load regulation and flue gas flow equalizing function | |
| CN204911218U (en) | Desulfurization system is absorbed in circulation of dan tashuan district | |
| CN201543380U (en) | Efficient wet-type flue gas desulfurization device employing dual-alkali method for industrial coal-fired boiler | |
| CN101279184B (en) | Helical airflow type wet method flue gas desulfurization process and spraying tower thereof | |
| CN101091873A (en) | Technical method by using seawater to remove sulfur dioxide in smoke through membrane absorption method | |
| CN201208542Y (en) | Desulfuration spray tower with load regulation and flue gas flow equalizing function | |
| CN101342455B (en) | Rotational flow and spray combined desulfurizing device | |
| CN101342454B (en) | Rotational flow and spray combined desulfurizing device | |
| CN101590366B (en) | Wet method fume desulfurizing device and control method thereof | |
| CN202778265U (en) | Improved spray absorption tower for wet flue gas desulfurization | |
| CN101468288A (en) | Desulfurizer suitable for sulfuric dioxide of large-scope change and control method thereof | |
| CN201200862Y (en) | Desulfurizing device suitable for wet flue gas desulfurization | |
| CN201085985Y (en) | Double-return circuit spray column | |
| CN101468289B (en) | Desulfurizer suitable for sulfuric dioxide of large-scope change and control method thereof | |
| CN205127725U (en) | Novel reducing desulfurization absorption tower | |
| CN204952657U (en) | Two thick liquid pond desulphurization unit of single tower | |
| CN201380042Y (en) | Device for removing sulfur dioxide in flue gas of industrial coal-fired boiler with wet method | |
| CN105126594A (en) | Variable-diameter desulfurizing tower | |
| CN201135853Y (en) | Desulfurizing device suitable for sulfurous anhydride varying at large scope | |
| CN208389728U (en) | A kind of modified kiln gas desulfuration absorbing tower | |
| CN201940170U (en) | Smoke desulphurization device with screen plate | |
| CN217092862U (en) | Desulfurizing tower with annular porous synergistic device | |
| CN204952654U (en) | Connection structure of desulfurization absorption tower thick liquid spray piping and nozzle | |
| CN203494367U (en) | Airflow uniform distribution wet method flue gas desulfurizing absorption tower | |
| CN203764091U (en) | Novel desulfurizing absorption tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |