CN101995345B - Flue gas desulphurization pH value measuring device - Google Patents
Flue gas desulphurization pH value measuring device Download PDFInfo
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- CN101995345B CN101995345B CN 200910013048 CN200910013048A CN101995345B CN 101995345 B CN101995345 B CN 101995345B CN 200910013048 CN200910013048 CN 200910013048 CN 200910013048 A CN200910013048 A CN 200910013048A CN 101995345 B CN101995345 B CN 101995345B
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- valve
- flow cell
- sensor
- communicated
- pipeline
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000003546 flue gas Substances 0.000 title claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000006477 desulfuration reaction Methods 0.000 claims description 17
- 230000023556 desulfurization Effects 0.000 claims description 17
- 238000007664 blowing Methods 0.000 abstract 3
- 239000000428 dust Substances 0.000 abstract 1
- 238000010926 purge Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a flue gas desulphurization pH value measuring device. A sampling pipeline of desulphurization slurry is communicated to a flow cell (7) through a primary sampling valve 14, a butting flange (1) and a secondary sampling valve (4) to discharge the desulphurization slurry; a pH sensor (8) is arranged in the flow cell (7), and the bottom of the flow cell (7) is provided with a transducer vibrator (13) of an ultrasonic generator; and the sampling pipeline between the butting flange (1) and the secondary sampling valve (4) is provided with a dredging pipeline with a blowing valve (2), the blowing valve (2) is communicated with an air compressor (11) through a check valve (10), a cleaning pipeline (15) with a cleaning water valve (5) is arranged between the secondary sampling valve (4) and the flow cell (7), and the cleaning pipeline (15) is communicated with the flow cell (7) through a sensor cleaning valve (6). The device reduces the pollution of fine dust to the sensor, ensures the measurement accuracy of the pH value, and prolongs the service life of the sensor. The device is also provided with an automatic control device, which not only can automatically acquire a PH data uploading main control room, but also can punctually finish blowing, dredging and cleaning operations.
Description
Technical field:
The present invention relates to a kind of measurement mechanism that is used for online detection desulfurization slurry pH value.
Background technology:
Contain a large amount of SO in the flue gas
2Gas is discharged in the air atmosphere is polluted, and influences earth environment.SO in the flue gas
2Absorption be the important indicator of environment monitoring.The pH value data are directly to have influence on SO in the sulfur removal technology process
2The important control parameter of assimilation effect.All be directly to be inserted into the PH sensor in the desulfurization slurry at all wet desulfurizing process of China at present, the monitoring pH value.The pressure and temp of its slurries is to the pollution to sensor of the influence of sensor characteristic and fine powder, and it is inaccurate to cause pH value to measure, and it is extremely unstable to detect desulfurized effect, is a sulfur removal technology difficult problem anxious to be solved.
Summary of the invention:
The present invention is directed to the above-mentioned deficiency of prior art, provide a kind of can the completion automatically to measure pH value, and in time clean PH sensor, the accurate flue gas desulfurization pH value of measurement result measurement mechanism.
Technical solution of the present invention is: a kind of flue gas desulfurization pH value measurement mechanism; The sampling pipe of desulfurization slurry L is discharged after being communicated to flow cell through primary sample valve, plain flange, secondary sample valve successively; The PH sensor is set in the flow cell; The porch of flow cell is provided with the sensor protection catch, and the bottom of flow cell is provided with the transducer oscillator of ultrasonic generator; Sampling pipe between plain flange and secondary sample valve is provided with the dredging pipeline of blow down valve; Blow down valve is communicated with air compressor machine through non-return valve; Between secondary sample valve and flow cell, be provided with the pipe blow-through that cleans water valve, pipe blow-through also is communicated with flow cell through the sensor cleaning valve.Wherein the sensor protection catch can prevent that pressurized air and rinse water and desulfurization slurry hypertonia are to PH sensor impact failure.When non-return valve can prevent that blow down valve from breaking down, desulfurization slurry got into air compressor machine.
Described flue gas desulfurization pH value measurement mechanism; Also be provided with the measurement controller; It is connected with the PH sensor through automatic measurement circuit; And through the timing controlled functional circuit be connected except that above-mentioned all valves, air compressor machine and the ultrasonic generator of primary sample valve, also have auto thermal compensation functional circuit and data interlock functional circuit.
Sampling pipe between described plain flange and secondary sample valve also is provided with the hand sampling pipeline of manual sample valve.Manual sample valve is the usefulness that aims at on-the-spot hand sampling chemical examination.
Outstanding feature of the present invention is in the process of sampling, to have increased purging dredger and cleaning device; Flow cell also is equipped with ultrasonic cleaning equipment; Reduced the pollution of fine powder, guaranteed the measuring accuracy of pH value, prolonged the serviceable life of sensor sensor.This device also possesses automatic control device, not only can gather PH data upload master-control room automatically, purges mediation and cleaning but also can regularly accomplish.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Solid line is represented pipeline among the figure, and dotted line is represented circuit.
Embodiment:
Further specify specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1; A kind of flue gas desulfurization pH value measurement mechanism; The sampling pipe of desulfurization slurry L is communicated to flow cell 7 backs through primary sample valve 14, plain flange 1, secondary sample valve 4 successively and discharges; PH sensor 8 is set in the flow cell 7, and the porch of flow cell 7 is provided with sensor protection catch 12, and the bottom of flow cell 7 is provided with the transducer oscillator 13 of ultrasonic generator; Be provided with the dredging pipeline of blow down valve 2 at the sampling pipe of 4 on plain flange 1 and secondary sample valve; Blow down valve 2 is communicated with air compressor machine 11 through non-return valve 10; Be provided with the pipe blow-through 15 that cleans water valve 5 at secondary sample valve 4 and 7 of flow cells, pipe blow-through 15 also is communicated with flow cell 7 through sensor cleaning valve 6.Also be provided with the hand sampling pipeline of manual sample valve 3 at the sampling pipe of 4 on plain flange 1 and secondary sample valve.Also be provided with and measure controller 9; It is connected with PH sensor 8 through automatic measurement circuit; And through the timing controlled functional circuit be connected except that above-mentioned all valves, air compressor machine 11 and the ultrasonic generator of primary sample valve, also have auto thermal compensation functional circuit and data interlock functional circuit.
Principle of work is following:
During normal surveying work, manual sample valve 3, blow down valve 2, clean water valve 5, sensor cleaning valve 6, have only 4 unlatchings of secondary sample valve for closing.Desulfurization slurry L discharges after primary sample valve 14 (often opening), plain flange 1, secondary sample valve 4 circulate pond 7, and PH sensor 8 is transferred to the PH voltage signal and measures controller 9, measures to show pH value and convert current signal to, is uploaded to master-control room.
Owing to contain impurity among the desulfurization slurry L; Fine particles etc. result in blockage to runner pipe road and PH sensor 8; Measuring controller 9 can open blow down valve 2, clean water valve 5, sensor cleaning valve 6 by time-of-the-day order; Close secondary sample valve 4 simultaneously, wherein the pressurized air of air compressor machine 11 can carry out high pressure to primary sample valve 14, plain flange 1, secondary sample valve 4 and purge mediation rapidly through non-return valve 10, blow down valve 2.While desulphurization system fresh water (FW) can pass through cleaning water valve 5,6 pairs of flow cells 7 of sensor cleaning valve, PH sensor 8 and pipeline and carry out the timing cleaning.Measure 9 pairs of flow cells of controller, 7 bottom ultrasonic generator transducer oscillators 13 simultaneously and instruct, the higher-order of oscillation carries out ultrasonic cleaning to PH sensor 8.In the timing cleaning process, error is arranged for preventing to measure; Measure controller 9 and automatically lock the preceding data of cleaning, automatic time delay restore data measurement again after the purging cleaning finishes, while shut-down purge valve 2, cleaning water valve 5, sensor cleaning valve 6; Open secondary sample valve 4, recover normally to measure.
Claims (3)
1. flue gas desulfurization pH value measurement mechanism; It is characterized in that: the sampling pipe of desulfurization slurry L passes through primary sample valve (14), plain flange (1), secondary sample valve (4) successively and is communicated to flow cell (7) back and discharges; PH sensor (8) is set in the flow cell (7); The porch of flow cell (7) is provided with sensor protection catch (12), and the bottom of flow cell (7) is provided with the transducer oscillator (13) of ultrasonic generator; Sampling pipe between plain flange (1) and secondary sample valve (4) is provided with the dredging pipeline of blow down valve (2); Blow down valve (2) is communicated with air compressor machine (11) through non-return valve (10); Between secondary sample valve (4) and flow cell (7), be provided with the pipe blow-through (15) that cleans water valve (5), pipe blow-through (15) also is communicated with flow cell (7) through sensor cleaning valve (6).
2. flue gas desulfurization pH value measurement mechanism according to claim 1; It is characterized in that: also be provided with and measure controller (9); It is connected with PH sensor (8) through automatic measurement circuit; And through the timing controlled functional circuit be connected except that above-mentioned all valves, air compressor machine (11) and the ultrasonic generator of primary sample valve, also have auto thermal compensation functional circuit and data interlock functional circuit.
3. flue gas desulfurization pH value measurement mechanism according to claim 1 is characterized in that: the sampling pipe between plain flange (1) and secondary sample valve (4) also is provided with the hand sampling pipeline of manual sample valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910013048 CN101995345B (en) | 2009-08-11 | 2009-08-11 | Flue gas desulphurization pH value measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910013048 CN101995345B (en) | 2009-08-11 | 2009-08-11 | Flue gas desulphurization pH value measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101995345A CN101995345A (en) | 2011-03-30 |
| CN101995345B true CN101995345B (en) | 2012-12-12 |
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| CN 200910013048 Expired - Fee Related CN101995345B (en) | 2009-08-11 | 2009-08-11 | Flue gas desulphurization pH value measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056742A (en) * | 2015-08-31 | 2015-11-18 | 国投钦州发电有限公司 | Fuel coal desulfurization slurry pH detection device |
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| CN102410945B (en) * | 2011-08-05 | 2013-06-05 | 聚光科技(杭州)股份有限公司 | Sulphur ratio on-line monitor and monitoring method |
| CN103592156B (en) * | 2012-08-13 | 2015-08-19 | 中国石油天然气股份有限公司 | A kind of polymeric kettle pH value detects sampling assemble |
| CN105067381A (en) * | 2015-07-31 | 2015-11-18 | 哈密和鑫矿业有限公司 | Program-controlled pipeline pulp sampling apparatus and sampling method thereof |
| CN106975339A (en) * | 2017-05-09 | 2017-07-25 | 大唐环境产业集团股份有限公司 | Flue gas desulfurization pH value measurement apparatus |
| CN109047228B (en) * | 2018-07-16 | 2023-07-18 | 朱鑫国 | Online cleaning and airtight sampling integrated device for glass bottle |
| CN109030114A (en) * | 2018-09-10 | 2018-12-18 | 联峰钢铁（张家港）有限公司 | A kind of block-proof type desulfurizing tower sampler |
| CN110841576B (en) * | 2019-12-16 | 2024-03-15 | 中国轻工业长沙工程有限公司 | Slurry type reaction kettle pH value online intermittent measuring device |
| CN112337884B (en) * | 2020-10-15 | 2023-10-27 | 郑州恒博环境科技股份有限公司 | Automatic cleaning device for pH meter of aluminum processing waste emulsion treatment system and control method |
| CN112619397A (en) * | 2020-11-04 | 2021-04-09 | 光大环境科技（中国）有限公司 | A thick liquid performance detection device for wet process deacidification |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4687649A (en) * | 1983-09-09 | 1987-08-18 | Babcock-Hitachi Kabushiki Kaisha | Flue gas desulfurization process |
| EP0246758A2 (en) * | 1986-04-23 | 1987-11-25 | Babcock-Hitachi Kabushiki Kaisha | Method for controlling wetprocess flue gas desulfurization |
| CN1053124C (en) * | 1995-04-21 | 2000-06-07 | 三菱重工业株式会社 | Flue gas treating system |
| CN201247222Y (en) * | 2008-08-26 | 2009-05-27 | 国电环境保护研究院 | Device for testing gypsum slurry pH |
| CN201488962U (en) * | 2009-08-11 | 2010-05-26 | 大连华城电子有限公司 | PH value measuring device for use in flue-gas desulphurization |
-
2009
- 2009-08-11 CN CN 200910013048 patent/CN101995345B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4687649A (en) * | 1983-09-09 | 1987-08-18 | Babcock-Hitachi Kabushiki Kaisha | Flue gas desulfurization process |
| EP0246758A2 (en) * | 1986-04-23 | 1987-11-25 | Babcock-Hitachi Kabushiki Kaisha | Method for controlling wetprocess flue gas desulfurization |
| CN1053124C (en) * | 1995-04-21 | 2000-06-07 | 三菱重工业株式会社 | Flue gas treating system |
| CN201247222Y (en) * | 2008-08-26 | 2009-05-27 | 国电环境保护研究院 | Device for testing gypsum slurry pH |
| CN201488962U (en) * | 2009-08-11 | 2010-05-26 | 大连华城电子有限公司 | PH value measuring device for use in flue-gas desulphurization |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056742A (en) * | 2015-08-31 | 2015-11-18 | 国投钦州发电有限公司 | Fuel coal desulfurization slurry pH detection device |
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|---|---|
| CN101995345A (en) | 2011-03-30 |
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