CN201135855Y - Desulfurizing device suitable for sulfurous anhydride varying at large scope - Google Patents
Desulfurizing device suitable for sulfurous anhydride varying at large scope Download PDFInfo
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- CN201135855Y CN201135855Y CNU2007201874183U CN200720187418U CN201135855Y CN 201135855 Y CN201135855 Y CN 201135855Y CN U2007201874183 U CNU2007201874183 U CN U2007201874183U CN 200720187418 U CN200720187418 U CN 200720187418U CN 201135855 Y CN201135855 Y CN 201135855Y
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- lime stone
- desulfurizing device
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Abstract
The utility model relates to a desulfurizing device suitable for the extensive change of the sulfur dioxide, which belongs to the desulfurizing agent slurry supply system of the absorbing tower of the desulfurizing device of the thermal power plant in the technical field of the environmental protection. The desulfurizing device comprises a sprinkling layer, absorbing towers of the slurry circulating pump forming the self-circulation and the gypsum discharge pump and a limestone slurry box with a limestone slurry densimeter and a limestone slurry output pump. The limestone slurry output pump is communicated with the limestone slurry box and the lower part of the absorbing tower through a slurry flowmeter and a slurry delivery pipeline. The desulfurizing device is structurally characterized in that the slurry delivery pipeline is composed of a slurry supply pipeline 1 and a slurry supply pipeline 2 in parallel; an electrical control valve and a butterfly valve 1 are connected in series on the slurry supply pipeline 1, a manual valve and a butterfly valve 2 are connected in series on the slurry supply pipeline 2, and the valves on the slurry supply pipelines can realize the automatic control respectively. The desulfurizing device can meet the requirement of the different anthraces to the different limestone slurry volumes, and has the advantages of low investment, small work amount, high automaticity, convenient adjustment and stable operation.
Description
Technical field
The utility model relates to the desulfurizer slurry supply system of environmental technology field thermal power plant desulfurizer absorbing tower, particularly adapts to the desulfurizer of sulfuric dioxide of large-scope change.
Background technology
In recent years, along with the raising gradually of environmental requirement, in order to reduce the discharge capacity of SO2 in the power-plant flue gas, many power plant have increased desulfurizer, and its nucleus equipment is the absorption tower.The bottom on absorption tower is the absorbent slurry pond, and absorbent adopts lime stone usually.Stock tank top is the former smoke inlet of boiler, and the position that makes progress again is some spraying layers.Slurry circulating pump is extracted slurries out from the slurries pond, become a large amount of liquid mists by the spraying layer absorbent slurry, carries out the heat and mass exchange with former flue gas is reverse, thereby removes the SO in the flue gas
2SO in the flue gas
2In the slurries pond mainly with HSO
3 -Form exist, by in stock tank, blasting oxidation wind, finally become gypsum (CaSO
42H
2O).
Desulfurizer absorbing tower has very strong adaptability to boiler load under design coal or check coal condition, generally can both reach the desulfuration efficiency of design.Yet because China is vast in territory, coal is numerous, and ature of coal is also very different.Most of power plant all are difficult to the source of control coal, combustion stablized coal.This just causes the sulphur component of boiler of power plant burning coal, and often difference is very big, thereby the sulfur content in the former flue gas changes also very greatly.Desulfurizer absorbing tower is through the high SO that is everlasting
2Move under the condition of concentration, cause the slurries pH value low excessively, desulfuration efficiency descends, the generation of a lot of problems such as pipeline equipment seriously corroded.
Desulfurizer lime stone flow inlet line of the prior art adopts the pattern of pipeloop usually, and lime stone slurry is pumped to the absorption tower by lime stone slurry, realizes for the slurry arm by the single of pipeloop to the lime stone slurry of absorption tower supply.And the flow of limestone slurry liquid pump is far above the limestone slurry liquid measure of actual needs in the absorption tower, and the limestone slurry liquid measure of actual provision is by realizing for the electric control valve on the slurry arm.This shortcoming for the slurry form is:
When the power plant soot sulfur content surpassed design load, stock volume can be obviously not enough, thereby the absorption tower can't safe operation; Simultaneously when the lower or coal-fired sulfur content of boiler load during far below design load, the stock volume demand seldom, not only motorized adjustment valve regulation inconvenience, and can increase system's local resistance, the valve serious wear.
Summary of the invention
In order to solve the shortcoming that exists in the above-mentioned prior art, the purpose of this utility model provides a kind of desulfurizer that adapts to sulfuric dioxide of large-scope change.It can satisfy the requirement of different atures of coal to different lime slurries amount, has small investment, quantities is little, automaticity is high, easy to adjust, stable characteristics.
In order to reach the foregoing invention purpose, the technical solution of the utility model realizes as follows:
A kind of desulfurizer that adapts to sulfuric dioxide of large-scope change, it comprises band spraying layer, the slurry circulating pump that forms self-loopa and the absorption tower of gypsum excavationg pump, the lime stone slurry case of band lime stone slurry densitometer and lime stone slurry rear pump.The lime stone slurry rear pump is communicated with the lime stone slurry case by slurry flow meter and slurries transfer pipeline with the bottom on absorption tower.Its design feature is that described slurries transfer pipeline is to be composed in parallel by flow inlet road one and flow inlet road two.Be serially connected with motor regulated valve and butterfly valve one on the flow inlet road one, be serially connected with hand-operated valve and butterfly valve two on the flow inlet road two, the valve on each flow inlet road all can be realized automatic control.
The utility model is owing to adopt said structure, by control module and two flow inlet roads, can satisfy the absorption tower the design load 30%～200% between change, satisfy requirement to different lime slurries amount.Variation to ature of coal has splendid adaptive capacity, can guarantee the stable operation of system.The utility model is not only applicable to newly-built desulfurizer, and is applicable to that power plant has built the project reconstruction of desulfurizer.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the utility model apparatus structure schematic diagram;
Fig. 2 is the utility model control flow chart.
The specific embodiment
Referring to Fig. 1, the utility model desulfurizer comprises band spraying layer 2, the slurry circulating pump 11 that forms self-loopa and the absorption tower 1 of gypsum excavationg pump 12, the lime stone slurry case 9 of band lime stone slurry densitometer 8 and lime stone slurry rear pump 10.Lime stone slurry rear pump 10 is communicated with the bottom of lime stone slurry case 9 with absorption tower 1 by slurry flow meter 7 and slurries transfer pipeline.The slurries transfer pipeline is to be composed in parallel by flow inlet road one A and flow inlet road two B.Be serially connected with motor regulated valve 3 and butterfly valve 1 on one A of flow inlet road, be serially connected with hand-operated valve 5 and butterfly valve 26 on two B of flow inlet road, the valve on each flow inlet road all can be realized automatic control.
Referring to Fig. 2, the control method step of the utility model device is:
1. by the sulfur dioxide removal efficient of control module, revise the pH value of slurries in the absorption tower 1 according to former sulfur dioxide in flue gas concentration, calcium sulfur ratio, liquid-gas ratio and needs.Lime stone slurry density and flow rate calculation lime stone slurry with lime stone slurry case 9 consume, and judge required stock volume in the absorption tower 1.
2. when the content of the former sulfur dioxide in flue gas of boiler is in design load, calculate the lime stone slurry consumption by control module, if consumption is less than single tube road stock volume then control the valve opening of motor regulated valve 3 and butterfly valve 1, supply required lime stone slurry by flow inlet road A in absorption tower 1, this moment, flow inlet road B was in closed condition.
3. when boiler uses high-sulfur coal and causes sulfur dioxide in flue gas content to surpass design load, by the valve opening of control module comprehensive adjustment motor regulated valve 3, butterfly valve 1, hand-operated valve 5 and butterfly valve 26, in absorption tower 1, supply required lime stone slurry jointly by flow inlet road A and flow inlet road B.The stable slurries quantity delivered that increases makes absorption tower 1 adaptation condition stable operation.
Claims (1)
1, a kind of desulfurizer that adapts to sulfuric dioxide of large-scope change, it comprises band spraying layer (2), form the slurry circulating pump (11) of self-loopa and the absorption tower (1) of gypsum excavationg pump (12), the lime stone slurry case (9) of band lime stone slurry densitometer (8) and lime stone slurry rear pump (10), lime stone slurry rear pump (10) is communicated with the bottom of lime stone slurry case (9) with absorption tower (1) by slurry flow meter (7) and slurries transfer pipeline, it is characterized in that, described slurries transfer pipeline is to be composed in parallel by flow inlet road one (A) and flow inlet road two (B), be serially connected with motor regulated valve (3) and butterfly valve one (4) on the flow inlet road one (A), be serially connected with hand-operated valve (5) and butterfly valve two (6) on the flow inlet road two (B), the valve on each flow inlet road all can be realized automatic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874183U CN201135855Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for sulfurous anhydride varying at large scope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874183U CN201135855Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for sulfurous anhydride varying at large scope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201135855Y true CN201135855Y (en) | 2008-10-22 |
Family
ID=40036543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201874183U Expired - Lifetime CN201135855Y (en) | 2007-12-24 | 2007-12-24 | Desulfurizing device suitable for sulfurous anhydride varying at large scope |
Country Status (1)
| Country | Link |
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| CN (1) | CN201135855Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961600A (en) * | 2010-08-16 | 2011-02-02 | 中环（中国）工程有限公司 | Redundancy design-based limestone slurry supplying device |
| CN101468288B (en) * | 2007-12-24 | 2011-09-07 | 同方环境股份有限公司 | Desulfurizer suitable for sulfuric dioxide of large-scope change and control method thereof |
| CN104368223A (en) * | 2014-11-07 | 2015-02-25 | 广德瑞邦涂料有限公司 | Waste gas absorption device for synthesizing anodic electrophoretic paint resin |
| CN107096370A (en) * | 2017-06-30 | 2017-08-29 | 大唐环境产业集团股份有限公司 | A kind of slurrying tapping equipment |
-
2007
- 2007-12-24 CN CNU2007201874183U patent/CN201135855Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468288B (en) * | 2007-12-24 | 2011-09-07 | 同方环境股份有限公司 | Desulfurizer suitable for sulfuric dioxide of large-scope change and control method thereof |
| CN101961600A (en) * | 2010-08-16 | 2011-02-02 | 中环（中国）工程有限公司 | Redundancy design-based limestone slurry supplying device |
| CN104368223A (en) * | 2014-11-07 | 2015-02-25 | 广德瑞邦涂料有限公司 | Waste gas absorption device for synthesizing anodic electrophoretic paint resin |
| CN107096370A (en) * | 2017-06-30 | 2017-08-29 | 大唐环境产业集团股份有限公司 | A kind of slurrying tapping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081022 Effective date of abandoning: 20071224 |