CN205216569U - Two -way measurement system of pH value - Google Patents
Two -way measurement system of pH value Download PDFInfo
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- CN205216569U CN205216569U CN201520867844.6U CN201520867844U CN205216569U CN 205216569 U CN205216569 U CN 205216569U CN 201520867844 U CN201520867844 U CN 201520867844U CN 205216569 U CN205216569 U CN 205216569U
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Abstract
The utility model provides a two -way measurement system of pH value is applicable to a wet flue gas desulfurization system, and this wet flue gas desulfurization system includes: a gypsum discharge line is equipped with 1 the 1st inlet valve, an end calandria way and a gypsum excavating pump in proper order on this gypsum discharge line, this end calandria way is equipped with an end valve door, this two -way measurement system of pH value includes: the buret way is surveyed to a pH value, and this pH value is surveyed buret and is equipped with a the second entrance valve on the road in proper order, is connected one and washes that one of pipeline washes the interface, a density is taken into account a PH and is counted, wherein, wash the interface through bypass intercommunication end calandria way, end calandria still is equipped with a stop valve on the road. Inclining when certain, PH meter place system is in service can't normally restore because of reason troubles such as pipeline or valves, when leading to measuring the pH value, accessible time surely surveys buret way to another way, measures for desulfurization system provides effectively stable pH value. Be particularly useful for reforming transform the realization through the pH value measurement system to current.
Description
Technical field
The utility model relates to exhaust-gas treatment field, particularly relates to Wet Flue Gas Desulfurization Technology field, is specifically related to a kind of pH value bidirectional measurement system.
Background technology
In Limestone-gypsum Wet Flue Gas Desulfurization Process system, in FGD (FlueGasDesulfurization) absorption tower, slurry pH value is a crucial parameter needing detection and control, it affects quantity delivered and the desulfuration efficiency of absorbent in absorption tower, also be the middle data that environmental protection is paid close attention to simultaneously, effect in desulphurization system is most important, at present, this value generally realizes measuring by pH value measuring system.
Existing pH value measuring system, as shown in Figure 1, generally comprises: PH counts manually-operated gate 21, a PH and counts flushing water manually-operated gate 25, densitometer 22, PH meter secondary manually-operated gate 23 and PH and count flushing pipe.This measuring system is directly drawn slurry from absorption tower body 20 and is counted a manually-operated gate 21 through PH, and densitometer 22, PH flows through PH after counting secondary manually-operated gate 23 and counts 24 place pipelines, and the measurement rear slurry carrying out pH value drains into trench.The slurry temperature that these equipment flow through is at about 50 DEG C, and pH value is at 5.2-5.8, and operating mode is more severe.During capital construction design PH count manually-operated gate 21 from tower body especially close to, because of long-term operation, when tower body and PH count pipeline (stainless steel) between a manually-operated gate 21 corrode spillage situation serious time, absorption tower run in will be extremely difficult, now, if envelope gambling spillage pipeline, cannot pH value determination, if not shutoff, on-site sanitation is ill-conditioned, spillage long-term erosion corrosion tower wall, causes a large amount of spillage to cause the non-risk of stopping of unit by there is tower body because corroding.
By above-mentioned, the pH value measurement of prior art belongs to unidirectional measurement, and do not take into full account the importance of pH value in desulfurization operation in the ban and environment monitoring, unidirectional circuit failure, none-disk terminal can be used, and pH value cannot be measured.PH value is once cannot normally measure, and run the means losing and directly monitor the acid-base value of slurries, bring difficulty to combustion adjustment, environment monitoring unit also cannot analyze the reasonability of environment protection digital by pH value.
The defect that current pH value measurement mechanism is maximum is, it belongs to single loop, once occur the fault on emptying absorption tower just cannot repairing, but in order to site safety production, the method of pressure sealing must be blocked, and pH value can be caused normally to measure like this.
Utility model content
For the problems referred to above, the purpose of this utility model proposes a kind of pH value bidirectional measurement system, when certain side PH counts in the system cloud gray model of place because of a variety of causes such as pipeline or valve fault, cannot normally repair, cause cannot pH value determination time, another road measuring system can be switched in time, for desulphurization system provides effectively stable pH value to measure.Be particularly useful for realizing by carrying out transformation to existing pH value measuring system.
For reaching above-mentioned purpose, the concrete technical scheme that the utility model is taked is:
A kind of pH value bidirectional measurement system, be applicable to a wet desulfurization system, this wet desulfurization system comprises: a gypsum discharge line, this gypsum discharge line is provided with successively one first inlet valve, an end row pipeline and a gypsum excavationg pump, and this end row pipeline is provided with an end valve door;
The flushing interface, the density that comprise: a pH value measures pipeline, this pH value is measured on pipeline and is provided with one second inlet valve successively, connect a flushing line take into account a PH meter;
Wherein, described flushing interface is by row pipeline at the bottom of a bypass; End row pipeline is also provided with a shutoff valve.
Further, described bypass is by row pipeline at the bottom of a bypass orifice.
Further, described bypass interface is between valve door of the described end and shutoff valve.
Further, described bypass is provided with a bypass valve.
Further, described bypass valve is manually-operated gate, operated pneumatic valve or electrically operated valve.
Further, described shutoff valve is manually-operated gate, operated pneumatic valve or electrically operated valve.
Further, described flushing line is provided with a flushing water valve.
Further, described gypsum discharge line, end row pipeline, pH value measure the stainless steel tube that specification DN50-DN100 is selected in pipeline, flushing line and bypass.
By taking technique scheme, the utility model can obtain following beneficial effect:
1, the stability measured with pH value that double loop ensures for slurry is taked.
2, without the need to shutting down the bidirectional measurement that can realize pH value.Be applicable to very much when in unit long-term operation, pH value is measured pipeline and is gone wrong, and needs situation about blocking.
3, be suitable for obtaining according to existing pipeline pipeline transformation, retrofit work amount is little, within one day, can complete.
Accompanying drawing explanation
Fig. 1 is the pipeline schematic diagram of the unidirectional measuring system of existing PH in background technology:
Fig. 2 is the structural representation of the unidirectional measuring system of existing pH value in an embodiment.
Fig. 3 is that the utility model is in one embodiment by transforming to the unidirectional measuring system of existing pH value the structural representation obtained.
Description of reference numerals: 0-absorption tower body; 1-second inlet valve; 2-densitometer; 3-bis-manually-operated gates; 4-PH counts; 5-flushing water valve; 6-first inlet valve; 7-gypsum excavationg pump; Valve door at the bottom of 8-; 9-bypass valve; 10-shutoff valve; 11-bypass; 21-PH counts a manually-operated gate; 22-densitometer; 23-PH counts secondary manually-operated gate; 24-PH counts; 25-PH counts flushing water manually-operated gate.
Detailed description of the invention
For making above-mentioned feature and advantage of the present utility model become apparent, special embodiment below, and coordinate institute's accompanying drawing to be described in detail below.
PH value bidirectional measurement system of the present utility model is applicable to a wet desulfurization system, this wet desulfurization system comprises: a gypsum discharge line, this gypsum discharge line is provided with successively one first inlet valve, an end row pipeline and a gypsum excavationg pump, this end row pipeline is provided with an end valve door;
PH value bidirectional measurement system comprises: a pH value measures pipeline, and this pH value measures on pipeline and be provided with one second inlet valve successively, connects that one of a flushing line rinses interface, a density takes into account a PH meter; Wherein, described flushing interface is by row pipeline at the bottom of a bypass; End row pipeline is also provided with a shutoff valve.
Above-mentioned pH value bidirectional measurement system is particularly suited for being transformed by the unidirectional measuring system of existing pH value obtaining, and is described below in conjunction with accompanying drawing.Before the pH value measuring system transformation of certain 2 × 300MW unit Limestone-gypsum Wet Flue Gas Desulfurization Process as shown in Figure 2, except the unidirectional measuring system of the pH value introduced in background technology, wet desulfurization system also comprises gypsum discharge line, wherein, this gypsum discharge line is provided with successively the first inlet valve 6, end row pipeline and gypsum excavationg pump 7, this end row pipeline is provided with end valve door 8.
Carry out following transformation: first, bypass 11 is set up at the flushing interface connecting flushing line, be communicated with pH value and measure pipeline and end row pipeline, after end valve door 8 before connectivity part is positioned at, and a bypass valve 9 is set in bypass 11, after the connectivity part that pH value measures pipeline and end row pipeline, shutoff valve 10 is set.Selecting rinse mouth to arrange bypass 11 can avoid flushing water to be back to gypsum discharge line.
In addition, bypass valve and shutoff valve can be manual, also can realize overall process remote control with electronic or operated pneumatic valve.Can select according to actual needs.Flushing line is provided with a flushing water valve 5.Gypsum discharge line, end row pipeline, pH value measure the stainless steel tube that pipeline, flushing line and bypass 11 can select specification DN50-DN100.
The pH value bidirectional measurement system obtained after transformation as shown in Figure 3.
By above-mentioned transformation, introduce the tested slurries in road before densitometer 2 entrance, after former measurement pipeline goes wrong and blocks, the opening and closing by bypass valve 11 and shutoff valve 10 realizes the switching in tested slurries source, is switched to the loop newly installed additional.
As above-mentioned, pH value bidirectional measurement system of the present utility model, bypass pipeline behind the door adding a band bypass valve is arranged at pipeline before densitometer in existing pH value measuring system and nearby equipment such as the end of gypsum excavationg pump, make the two UNICOM, install a shutoff valve again additional with rear, bypass place behind the door at the end valve of gypsum excavationg pump simultaneously, complete the transformation in whole loop, realize bidirectional measurement.The measurement slurries of such pH value, except from original system, can also realize pH value by following stream and measure: gypsum excavationg pump entrance door → end valve door → bypass valve → densitometer → secondary manually operated door → PH meter.
Claims (8)
1. a pH value bidirectional measurement system, be applicable to a wet desulfurization system, this wet desulfurization system comprises: a gypsum discharge line, this gypsum discharge line is provided with successively one first inlet valve, an end row pipeline and a gypsum excavationg pump, and this end row pipeline is provided with an end valve door;
It is characterized in that, comprising: a pH value measures pipeline, this pH value is measured on pipeline and is provided with one second inlet valve successively, connect that a flushing interface, a density of a flushing line take into account a pH meter;
Described flushing interface is by row pipeline at the bottom of a bypass; End row pipeline is also provided with a shutoff valve.
2. pH value bidirectional measurement system as claimed in claim 1, is characterized in that, described bypass is by row pipeline at the bottom of a bypass orifice.
3. pH value bidirectional measurement system as claimed in claim 2, it is characterized in that, described bypass interface is between valve door of the described end and shutoff valve.
4. pH value bidirectional measurement system as claimed in claim 1, it is characterized in that, described bypass is provided with a bypass valve.
5. pH value bidirectional measurement system as claimed in claim 4, it is characterized in that, described bypass valve is manually-operated gate, operated pneumatic valve or electrically operated valve.
6. pH value bidirectional measurement system as claimed in claim 1, it is characterized in that, described shutoff valve is manually-operated gate, operated pneumatic valve or electrically operated valve.
7. pH value bidirectional measurement system as claimed in claim 1, it is characterized in that, described flushing line is provided with a flushing water valve.
8. pH value bidirectional measurement system as claimed in claim 1, is characterized in that, described gypsum discharge line, end row pipeline, pH value measure the stainless steel tube that specification DN50-DN100 is selected in pipeline, flushing line and bypass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867844.6U CN205216569U (en) | 2015-11-03 | 2015-11-03 | Two -way measurement system of pH value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867844.6U CN205216569U (en) | 2015-11-03 | 2015-11-03 | Two -way measurement system of pH value |
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| CN205216569U true CN205216569U (en) | 2016-05-11 |
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| CN201520867844.6U Expired - Fee Related CN205216569U (en) | 2015-11-03 | 2015-11-03 | Two -way measurement system of pH value |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290727B (en) * | 2016-08-08 | 2018-12-07 | 江苏国胶化学科技有限公司 | The online pH value measuring mechanism installation method of water scrubber |
-
2015
- 2015-11-03 CN CN201520867844.6U patent/CN205216569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290727B (en) * | 2016-08-08 | 2018-12-07 | 江苏国胶化学科技有限公司 | The online pH value measuring mechanism installation method of water scrubber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20211103 |