CN203772778U - PH online measuring device for desulfurization absorption tower - Google Patents
PH online measuring device for desulfurization absorption tower Download PDFInfo
- Publication number
- CN203772778U CN203772778U CN201320821437.2U CN201320821437U CN203772778U CN 203772778 U CN203772778 U CN 203772778U CN 201320821437 U CN201320821437 U CN 201320821437U CN 203772778 U CN203772778 U CN 203772778U
- Authority
- CN
- China
- Prior art keywords
- baffle
- box
- electrode
- measuring device
- absorption tower
- 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.)
- Expired - Lifetime
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 25
- 230000023556 desulfurization Effects 0.000 title abstract description 5
- 238000010521 absorption reaction Methods 0.000 title abstract 4
- 238000005259 measurement Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 abstract description 27
- 238000005070 sampling Methods 0.000 abstract description 15
- 238000011010 flushing procedure Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 7
- 229910052602 gypsum Inorganic materials 0.000 description 6
- 239000010440 gypsum Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001139 pH measurement Methods 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a pH online measuring device for a desulfurization absorption tower. The pH online measuring device comprises a desulfurization absorption tower (1), wherein a sampling tube (2) is connected to the bottom of the desulfurization absorption tower (1); the other end of the sampling tube (2) is connected with a buffer tank (5); an overflow tube (6) is arranged on the buffer tank (5); an electrode measuring end (1) of a pH measurer is arranged in the buffer tank (5). According to the utility model, by delicately changing a sampling position of the conventional pH online measuring device, setting a slurry buffer tank to change a contact mode of a pH electrode measuring end and slurry into an immersion mode from a direct impact mode, and additionally arranging a temperature element for introducing a temperature measuring point signal to a DSC (distributed control system) for being displayed as temperature low alarm, the pH online measuring device disclosed by the utility model effectively solves the problems that in the conventional device, a sampling pipeline is easy to block, a pH electrode is easily damaged by factors such as slurry flushing, evacuating and drying.
Description
Technical field
The utility model relates to a kind of desulfuration absorbing tower pH on-line measurement device, belongs to coal-fired flue gas desulfurization system field.
Background technology
Traditional desulfuration absorbing tower pH on-line measurement device is that pH electrode measurement end is arranged in the arm of gypsum extraction pump outlet conduit, mainly there is following problem: one, because serum density is large, travelling speed is high, to pH electrode to wash away damage comparison serious, shortened to a great extent the serviceable life of pH electrode; Two, the sample position of pH measurement mechanism is located at the outlet of gypsum slurries extraction pump, and the method for operation of this extraction pump is to put into operation in gap, during stoppage in transit, not only cannot carry out sampling and measuring to slurries, and pH electrode is also easily because the dry and astringent damage without slurries soak; Three, the serum density of gypsum slurries extraction pump outlet is relatively large, and the caliber of pH measurement mechanism pipeline is less, and the mobility of slurries is relatively poor, easily causes sampling line to stop up, and is difficult for being found in time by operations staff, also easily causes the dry and astringent damage of electrode.
Summary of the invention
The technical problems to be solved in the utility model is to provide and is not a kind ofly subject to gypsum slurries extraction pump to affect, can increase flat pH electrode life, can monitors the desulfuration absorbing tower pH on-line measurement device of stopple coupon pass blocking, can overcome the deficiencies in the prior art.
The technical solution of the utility model is: desulfuration absorbing tower pH on-line measurement device, it comprises desulfuration absorbing tower, bottom at desulfuration absorbing tower is connected with stopple coupon, the other end of stopple coupon is connected with baffle-box, on baffle-box, be provided with run-down pipe, in baffle-box, be provided with the electrode measurement end of pH measuring instrument.
Above-mentioned desulfuration absorbing tower pH on-line measurement device is to be provided with blowoff valve in the bottom of baffle-box.
Aforesaid desulfuration absorbing tower pH on-line measurement device is, is provided with the probe of detector unit in baffle-box, and the probe of detector unit is positioned at the top of the electrode measurement end of pH measuring instrument.
Aforesaid desulfuration absorbing tower pH on-line measurement device is, otherly on stopple coupon is connected to rinse water valve, and the rinse water valve other end is connected with wash tub pipe.
Aforesaid desulfuration absorbing tower pH on-line measurement device is on stopple coupon, to be serially connected with hand valve and operation valve.
Aforesaid desulfuration absorbing tower pH on-line measurement device is that rinse water valve, blowoff valve, operation valve, pH measuring instrument and detector unit are connected with control module, be provided with temperature and show and low-temperature warning device on control module.
Compared with the prior art, the utility model is changed to entrance by the sample position of pH on-line measurement device from traditional gypsum slurries extraction pump outlet, adopt the mode of slurries gravity flow to carry out sampling and measuring, even if having ensured like this gypsum slurries extraction pump stops transport, pH on-line measurement pipeline still has slurries to pass through, bubble is invaded all the time in slurries in pH electrode measurement termination, can not damage because of desiccation;
B, for make pH electrode measurement termination invade all the time bubble in slurries, a slurries baffle-box is set, first slurries in desulfuration absorbing tower introduce slurries baffle-box, establish sewage door in baffle-box bottom, top is provided with slurries run-down pipe, slurries are introduced after baffle-box, regulate sewage door, allow baffle-box keep certain spillway discharge, pH electrode measurement end is immersed in slurries, so both avoided directly washing away pH electrode measurement termination because slurry flow rate is excessive in traditional design and caused electrode damage, also avoided because air stockpiles the measuring error causing;
C, in baffle-box, set up a temperature point higher than pH electrode mounting points position, temperature point signal leading DCS shows, and makes low alarm temperature.Because slurries running temperature is generally 50 DEG C of left and right, once baffle-box entrance pipe stops up, in baffle-box, liquid level of slurry can reduce gradually, temperature can decline thereupon, in the time measuring temperature lower than 50 DEG C of definite values, DCS picture can be reminded operations staff's line clogging in the mode of variable color warning, needs to strengthen pH sampling line and rinses, and has effectively avoided sampling line obstruction and pH electrode because of the dry and astringent possibility being damaged;
D, set up the control of sampling line auto-flushing, on DCS, increase the auto-flushing logic to pH sampling line, automatically sampling line is rinsed according to the time interval of setting, reduced operations staff's operational ton, improved developing result.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment 1: as shown in Figure 1, in the standby pipes of desulfuration absorbing tower bottom, connect stopple coupon, the other end of stopple coupon connects baffle-box 5, be provided with blowoff valve 4 in the bottom of baffle-box 5, be provided with at an upper portion thereof run-down pipe 6, in baffle-box 5, be provided with the electrode measurement end 1 of pH measuring instrument and the probe of detector unit 2, the probe of detector unit 2 is positioned at the top of the electrode measurement end 1 of pH measuring instrument.
Threeway is installed on stopple coupon, is connected to rinse water valve 3 by threeway is other, rinse water valve 3 other ends are connected with wash tub pipe; On stopple coupon, be serially connected with hand valve 7 and operation valve 8 simultaneously.
For convenience of controlling, rinse water valve 3, blowoff valve 4, operation valve 8, pH measuring instrument and detector unit 2 are all connected with control module, be provided with temperature simultaneously and show and low-temperature warning device on control module.
The concrete operation method of this device is, opens hand valve 7 and operation valve 8, makes the mode of slurries gravity flow flow into baffle-box 5; Slurries are introduced after baffle-box 5, regulate blowoff valve size to allow baffle-box 5 keep certain spillway discharge, and under regular test case, the electrode measurement end 1 of pH measuring instrument and the probe of detector unit 2 are immersed in slurries all the time; Temperature point signal leading DCS shows, and makes low alarm temperature; So just can carry out on-line monitoring to desulfuration absorbing tower pH value.The control of sampling line auto-flushing is set, on DCS, increases the auto-flushing logic to pH sampling line, according to the time interval automatic start-stop rinse water valve 3 of setting, sampling line is rinsed, reduced operations staff's operational ton, improved developing result.In the time need rinsing this monitoring device, control module is opened rinse water valve 3, and closed control valve 8 can be realized flushing.
Claims (3)
1. a desulfuration absorbing tower pH on-line measurement device, it comprises desulfuration absorbing tower, it is characterized in that: the bottom at desulfuration absorbing tower is connected with stopple coupon, the other end of stopple coupon is connected with baffle-box (5), on baffle-box (5), be provided with run-down pipe (6), in baffle-box (5), be provided with the electrode measurement end (1) of pH measuring instrument; Be provided with blowoff valve (4) in the bottom of baffle-box (5); In baffle-box (5), be provided with the probe of detector unit (2), the probe of detector unit (2) is positioned at the top of the electrode measurement end (1) of pH measuring instrument; On stopple coupon, side is connected to rinse water valve (3), and rinse water valve (3) other end is connected with wash tub pipe.
2. desulfuration absorbing tower pH on-line measurement device according to claim 1, is characterized in that: on stopple coupon, be serially connected with hand valve (7) and operation valve (8).
3. desulfuration absorbing tower pH on-line measurement device according to claim 1, it is characterized in that: rinse water valve (3), blowoff valve (4), operation valve (8), pH measuring instrument and detector unit (2) are connected with control module, on control module, be provided with temperature and show and low-temperature warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821437.2U CN203772778U (en) | 2013-12-13 | 2013-12-13 | PH online measuring device for desulfurization absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821437.2U CN203772778U (en) | 2013-12-13 | 2013-12-13 | PH online measuring device for desulfurization absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772778U true CN203772778U (en) | 2014-08-13 |
Family
ID=51289956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320821437.2U Expired - Lifetime CN203772778U (en) | 2013-12-13 | 2013-12-13 | PH online measuring device for desulfurization absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203772778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630578A (en) * | 2013-12-13 | 2014-03-12 | 贵州电力试验研究院 | pH on-line measurement method and device of desulfurizing absorption tower |
| 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 |
-
2013
- 2013-12-13 CN CN201320821437.2U patent/CN203772778U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630578A (en) * | 2013-12-13 | 2014-03-12 | 贵州电力试验研究院 | pH on-line measurement method and device of desulfurizing absorption tower |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |