CN202555145U - SO2 target-hitting emission self-adjusting system for smoke desulfuration - Google Patents
SO2 target-hitting emission self-adjusting system for smoke desulfuration Download PDFInfo
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- CN202555145U CN202555145U CN 201220182697 CN201220182697U CN202555145U CN 202555145 U CN202555145 U CN 202555145U CN 201220182697 CN201220182697 CN 201220182697 CN 201220182697 U CN201220182697 U CN 201220182697U CN 202555145 U CN202555145 U CN 202555145U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 title abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 23
- 239000002250 absorbent Substances 0.000 claims abstract description 20
- 230000002745 absorbent Effects 0.000 claims abstract description 19
- 239000010440 gypsum Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 12
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 20
- 239000003546 flue gas Substances 0.000 claims description 20
- 230000023556 desulfurization Effects 0.000 claims description 16
- 239000003002 pH adjusting agent Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model relates to a SO2 target-hitting emission self-adjusting system for smoke desulfuration. The SO2 target-hitting emission self-adjusting system comprises an absorbent supply pipe, a gypsum slurry discharge pipe and a flue sampling pipe which are arranged in a desulfurizing tower. The absorbent supply pipe is provided with a flow meter and a flow adjusting valve, the gypsum slurry discharge pipe is provided with a pH meter, and the flue sampling pipe is provided with a SO2 concentration monitor. The SO2 target-hitting emission self-adjusting system further comprises an absorbent flow adjuster, a gypsum slurry pH adjuster and a desulfurated smoke SO2 concentration adjuster. The absorbent flow adjuster is provided with a signal connection wire respectively coming from the pH adjuster and the flow meter. The pH adjuster is provided with a signal connection wire respectively coming from the pH meter and the SO2 concentration adjuster. The SO2 concentration adjuster is provided with a high concentration limit set value, a low concentration limit set value and a signal connection wire coming from the SO2 concentration monitor. The SO2 target-hitting emission self-adjusting system enables SO2 concentration of smoke at an outlet of the desulfurizing tower to be fast and automatically stabilized in a target-hitting emission control range, and is high in stability and reliability and convenient to use.
Description
Technical field
The utility model relates to the SO of flue gas desulfurization
2The qualified discharge self-adjusting system belongs to the smoke-gas wet desulfurization field.
Background technology
Wet method lime/lime stone FGD (flue gas desulfurization) technology is present most widely used desulfurization method, and the flue gas (claiming former flue gas) that boiler produces is through the blower fan supercharging, gets into the absorption tower through the heat exchanger back that lowered the temperature.In the absorption tower, the SO that flue gas contains
2The lime/lime stone slurries that sprayed absorb, and simultaneously, flue gas is by water-vapo(u)r saturation and cooling; Flue gas after the desulfurization rises to the top, absorption tower, returns heat exchanger after removing droplet through demister, heats up with former flue gas heat exchange, enters in the atmosphere through flue, chimney then.So far, the FGD device has been accomplished the desulfurization of boiler smoke.
In order to guarantee out the SO of tower flue gas
2Satisfy the concentration of emission of environmental requirement, need pay close attention to exhaust gas volumn, the SO of desulphurization system constantly
2A series of operational factors such as concentration, slurry pH value, slurry adding amount, desulfuration efficiency, and according to the situation that parameter changes, the operation that desulphurization system is correlated with is adjusted; Process is very complicated, and labour intensity is big, simultaneously; Since this adjustment mode, relatively independent and dispersion, and Total tune property is poor; Adjustment cycle is long, large scale system equipment such as booster fan especially, adjustment process must with the host machine part coordinate synchronization; The time that adjustment needs is longer, sometimes also can be inaccurate because of regulated quantity control, cause excessive adjustment.Owing to the state that parameter is in continuous fluctuation, lean on manually-operated to be difficult to realize lasting dynamic equilibrium, part period flue gas SO appears unavoidably
2The situation that exceeds standard and discharge, this has not only caused enormous economic loss to enterprise, also surrounding environment has been brought very big harm.
Summary of the invention
The utility model purpose provides a kind of SO of flue gas desulfurization
2The qualified discharge self-adjusting system, it can regulate parameters in the desulfurization automatically, makes the SO of fume emission
2Concentration reaches environmental protection index.
This regulating system comprises absorbent supply pipe, gypsum slurries discharge pipe and the flue sampling pipe of desulfurizing tower, and said absorbent supply pipe is equipped with flowmeter and flow control valve, and the gypsum slurries discharge pipe is equipped with pH meter, and the flue sampling pipe is provided with SO
2The concentration monitor meter; Also comprise the pH-meter of absorbent flow adjuster, gypsum slurries and the SO of desulfurization flue gas
2Consistencyregulator, said absorbent flow adjuster are provided with respectively the signal on line from pH-meter and flowmeter; Said pH-meter is provided with respectively from pH meter and SO
2The signal on line of consistencyregulator; Said SO
2Consistencyregulator is provided with from SO
2The signal on line of concentration monitor meter, SO
2Consistencyregulator is provided with high and low two spacing set-points of concentration.
Native system is with the SO of environment protection standard discharging
2The concentration index scope is passed through SO
2Consistencyregulator is set to control set-point; Under the duty, this set-point and outlet SO
2The concentration measured value carries out the difference computing, according to the size of difference, to the instant pH set-point of pH-meter output; PH-meter compares set-point and actual measurement pH value; Through result relatively, to flow regulator output flow conditioning signal, the order of flow regulator output control valve opening; Control absorbent slurry quantity delivered, thus can make desulfurizing tower outlet flue gas SO
2Concentration is fast automatic to be stabilized in the control range of qualified discharge.Native system stability and reliability are high, and it is very convenient to use.
Description of drawings
Fig. 1 is the SO of flue gas desulfurization
2Qualified discharge self-adjusting system structural representation.
Among the figure, 1-desulfurizing tower, 2-pH meter, 3-flow control valve, 4-SO
2Consistencyregulator, 5-pH-meter, 6-absorbent flow adjuster, 7-flowmeter, 8-SO
2The concentration monitor meter, 9-chimney; H1-SO
2The high limit control of concentration set-point, H2-SO
2Concentration lower bound control set-point.
The specific embodiment
Like Fig. 1, former flue gas gets into desulfurizing tower 1, absorbs through the absorbent slurry spray, and slurries are discharged gypsum slurries, discharges the desulfurization flue gas and enters atmosphere through chimney 9 from cat head, and the gypsum slurries of discharging at the bottom of the tower is carried by slush pump and gone further dehydration.SO shown in Figure 1
2In the qualified discharge self-adjusting system, the absorbent of desulfurizing tower 1 (slurries) supply pipe is equipped with flowmeter 7 and flow control valve 3, and the gypsum slurries discharge pipe is equipped with pH meter 2, and the desulfurization duct sampling pipe is provided with SO
2Concentration monitor meter 8.Each dotted line expression signal on line among the figure.Absorbent (slurries) flow regulator 6 is provided with respectively the signal conveys on line from pH-meter and flowmeter.
Native system is with SO
2Concentration value index (100～the 400mg/Nm of environment protection standard discharging
3) be set to high limit control set-point H1 and control set-point H2 with lower bound.In the flue gas desulfurization course, SO
2Consistencyregulator 4 will be from SO
2The SO of concentration monitor meter 8 actual measurements
2Concentration value and value up to standard compare, according to the size of difference, to the instant pH set-point PH of pH-meter 5 outputs
SpPH-meter 5 with set-point with compare from the actual measurement pH value of pH meter 2, through the result of comparison, to absorbent (slurries) flow regulator 6 output flow conditioning signals; Absorbent (slurries) flow regulator 6 compares the actual flow value of this flow regulating signal and flowmeter 7; To flow control valve 3 output aperture orders, control absorbent (slurries) quantity delivered, thus can make the SO in desulfurizing tower 1 smoke evacuation
2Concentration is fast automatic to be stabilized in the control range of qualified discharge.
Claims (1)
1. the SO of flue gas desulfurization
2The qualified discharge self-adjusting system comprises absorbent supply pipe, gypsum slurries discharge pipe and the flue sampling pipe of desulfurizing tower, and said absorbent supply pipe is equipped with flowmeter and flow control valve, and the gypsum slurries discharge pipe is equipped with pH meter, and the flue sampling pipe is provided with SO
2The concentration monitor meter; It is characterized in that also comprising the pH-meter of absorbent flow adjuster, gypsum slurries and the SO of desulfurization flue gas
2Consistencyregulator, said absorbent flow adjuster are provided with respectively the signal on line from pH-meter and flowmeter; Said pH-meter is provided with respectively from pH meter and SO
2The signal on line of consistencyregulator; Said SO
2Consistencyregulator is provided with from SO
2The signal on line of concentration monitor meter, SO
2Consistencyregulator is provided with high and low two spacing set-points of concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182697 CN202555145U (en) | 2012-04-26 | 2012-04-26 | SO2 target-hitting emission self-adjusting system for smoke desulfuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182697 CN202555145U (en) | 2012-04-26 | 2012-04-26 | SO2 target-hitting emission self-adjusting system for smoke desulfuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202555145U true CN202555145U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220182697 Expired - Lifetime CN202555145U (en) | 2012-04-26 | 2012-04-26 | SO2 target-hitting emission self-adjusting system for smoke desulfuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202555145U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587799A (en) * | 2015-01-26 | 2015-05-06 | 上海梅思泰克环境股份有限公司 | Device and method for processing complex organic waste gas components and recycling resources |
| CN105561771A (en) * | 2015-12-14 | 2016-05-11 | 云南云铜锌业股份有限公司 | Zinc oxide powder desulfurization control device based on online monitoring data locking and zinc oxide powder desulfurization control method |
| CN107158922A (en) * | 2017-07-12 | 2017-09-15 | 江苏新春兴再生资源有限责任公司 | The desulfurizer and method of absorbing sulfur dioxide in flue are starched with lime/lime stone |
| CN111905536A (en) * | 2020-06-17 | 2020-11-10 | 天津国电津能滨海热电有限公司 | Automatic control system for pH value of slurry passing through desulfurization absorption tower |
-
2012
- 2012-04-26 CN CN 201220182697 patent/CN202555145U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587799A (en) * | 2015-01-26 | 2015-05-06 | 上海梅思泰克环境股份有限公司 | Device and method for processing complex organic waste gas components and recycling resources |
| CN105561771A (en) * | 2015-12-14 | 2016-05-11 | 云南云铜锌业股份有限公司 | Zinc oxide powder desulfurization control device based on online monitoring data locking and zinc oxide powder desulfurization control method |
| CN105561771B (en) * | 2015-12-14 | 2018-03-16 | 云南云铜锌业股份有限公司 | Oxide powder and zinc desulphurization control device and method based on online monitoring data interlocking |
| CN107158922A (en) * | 2017-07-12 | 2017-09-15 | 江苏新春兴再生资源有限责任公司 | The desulfurizer and method of absorbing sulfur dioxide in flue are starched with lime/lime stone |
| CN111905536A (en) * | 2020-06-17 | 2020-11-10 | 天津国电津能滨海热电有限公司 | Automatic control system for pH value of slurry passing through desulfurization absorption tower |
| CN111905536B (en) * | 2020-06-17 | 2022-05-24 | 天津国能津能滨海热电有限公司 | Automatic control system for pH value of slurry passing through desulfurization absorption tower |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210031 Pudong Road, Pukou District, Jiangsu, No. 10, No. Co-patentee after: National Electric Environmental Protection Research Institute Co., Ltd. Patentee after: National Electric Science and Technology Research Institute Co., Ltd. Address before: 210031 Pudong Road, Pukou District, Jiangsu, No. 10, No. Co-patentee before: State Power Environmental Protection Research Institute Patentee before: Guodian Science and Technology Research Institute |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |