CN101219334B - Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower - Google Patents
Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower Download PDFInfo
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- CN101219334B CN101219334B CN200710201906XA CN200710201906A CN101219334B CN 101219334 B CN101219334 B CN 101219334B CN 200710201906X A CN200710201906X A CN 200710201906XA CN 200710201906 A CN200710201906 A CN 200710201906A CN 101219334 B CN101219334 B CN 101219334B
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- absorption tower
- connecting tube
- lower linking
- source
- tube
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 58
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 19
- 230000023556 desulfurization Effects 0.000 title claims abstract description 19
- 239000003546 flue gas Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 30
- 239000010440 gypsum Substances 0.000 claims abstract description 19
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 19
- 238000011010 flushing procedure Methods 0.000 claims abstract description 15
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 230000005484 gravity Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005243 fluidization Methods 0.000 claims description 37
- 238000005259 measurement Methods 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 238000000247 postprecipitation Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The invention relates to a source device for measuring pH value of liquid inside a flue gas desulfurization absorption tower and a method thereof. A lower source opening is arranged at the lower part of a tower wall of the absorption tower, while an upper source opening is arranged at the upper part of the tower wall of the absorption tower. The lower source opening is internally inserted with a lower connecting tube slant downwards, while the upper source opening is internally inserted with an upper connecting tube slant upwards; the upper connecting tube is connected with a shut-off valve thereof, but the lower connecting tube is connected with a shut-off valve thereof; the upper connecting tube is communicated with the upper part of the lower connecting tube, a flushing port is arranged below the lower part at the interface part of the two connecting tubes where the lower connecting tube located, and a fluidized tube is formed at a tube section from the interface part between the lower connecting tube and the upper connecting tube to a back cut of the lower connecting tube. A back cut of the fluidized tube is provided with a top cap, a contact terminal of a pH meter is inserted downwards inside the fluidized from the top cap, and the upper end of the pH meter is connected with the top cap through a connecting component. Under the action of gravity of slurry inside the absorption tower, the slurry is circled naturally, flushing water flushes gypsum crystal accumulated on the contact terminal of the pH meter through a flushing port, which can avoid abrasion and pollution and does not need any power equipment.
Description
(1) technical field
The present invention relates to the measurement mechanism of liquid pH value in the process for flue gas desulfurization by limestone/lime-gypsum wet absorption tower.
(2) background technology
The measurement of the pH value of limestone/lime-gypsum coal burning flue gas desulfurization system absorption tower slurries is desulphurization system keys of control automatically.At present; the measurement of pH value is to adopt calcium plaster liquid pump forced circulation slurries; on leading to the slurries pipeline of fume desulfurating absorption tower or install and measure the pH meter of slurry pH value in the circulatory pool; since on the slurries pipeline or the slurries in the circulatory pool contain a large amount of gypsum crystals; this measuring method can not be protected effectively to pH meter; the wearing and tearing and the pollution that the pH meter contact are in operation usually be subjected to gypsum crystal in the slurries have reduced certainty of measurement.In order addressing this problem, and to improve the reliability of pH meter, need many transmitters to be installed on the slurries pipeline usually, still, this has caused equipment investment height, baroque new problem again.
(3) summary of the invention
The purpose of this invention is to provide a kind of source-taking apparatus of measuring pH value of liquid in flue gas desulfurization absorption tower, solution pH meter contact is in operation and avoids being subjected to the wearing and tearing and the pollution problems of gypsum crystal in the slurries; And separate and never need power-equipment, still can guarantee the problem of certainty of measurement.
Technical scheme of the present invention: the source-taking apparatus of this measurement pH value of liquid in flue gas desulfurization absorption tower is characterized in that: have in the bottom that absorbs Tata wall 6 and get source mouth 9 under one, have on absorption Tata wall top and get source mouth 10 on one;
Get the mouth 9 interior downward-sloping lower linking tubes 1 that are inserted with in source under above-mentioned, getting on above-mentioned is inclined upwardly in the source mouth 10 is inserted with a upper connecting tube 2, the part of upper connecting tube 2 outside the absorption tower connects upper connecting tube shut-off valve 4, the part of lower linking tube 1 outside the absorption tower connects lower linking tube shut-off valve 3, upper connecting tube 2 is communicated with the top of lower linking tube 1 outside the absorption tower, and intersect Y-shaped, lower linking tube 1 be positioned at above-mentioned two the pipe positions, boundary below have the flushing interface 8 that is used to connect cleaning hose, form fluidisation pipe 7 at lower linking tube 1 and position, upper connecting tube 2 boundary to lower linking tube pipeline section suitable for reading, fluidisation pipe 7 is suitable for reading top cover 11, pH meter contact 5 is in top cover inserts the fluidisation pipe downwards, and the upper end of pH meter contact is connected with top cover by connector 12.
Above-mentioned lower linking tube 1 and the inclination angle a that absorbs between the Tata wall are 10-20 °.
Above-mentioned upper connecting tube 2 is 15-25 ° with horizontal angle of inclination beta.
The inwall of above-mentioned fluidisation pipe, upper connecting tube, lower linking tube has anticorrosive coat.
The method of the source-taking apparatus of above-mentioned measurement pH value of liquid in flue gas desulfurization absorption tower is characterized in that step is as follows:
A, open in the bottom that absorbs Tata wall 6 and to get source mouth 9 under one, open and get source mouth 10 on one absorbing Tata wall top; Under the absorption tower, get source mouth 9 with on get the source-taking apparatus that is connected above-mentioned measurement pH value of liquid in flue gas desulfurization absorption tower between the source mouth 10;
B, open upper connecting tube shut-off valve 4 and lower linking tube shut-off valve 3, the liquid in the absorption tower is incorporated in the fluidisation pipe 7 through lower linking tube 1;
C, liquid separate in fluidisation pipe 7, and the downward post precipitation of the gypsum crystal in the liquid flows in the absorption tower through fluidisation pipe and lower linking tube 1, and the solution of cutting out partial gypsum flows in the absorption tower through fluidisation pipe and upper connecting tube 2;
D, by the pH value of pH meter contact 5 collection liquids in the fluidisation pipe, and show numerical value by pH meter;
E, under the effect of absorption tower slurries gravity, new slurries enter fluidisation pipe 7 through lower linking tube 1, form the Natural Circulation of slurries, the pH value of pH meter contact 5 real-time collection liquids, inlet by lower linking tube shut-off valve and upper connecting tube shut-off valve control absorption tower slurries, open the cleaning hose valve, flushing water washes the gypsum crystal that accumulates on the pH meter contact through flushing interface 8.
Slurries in the absorption tower are got source mouth and lower linking tube and are introduced in the fluidisation pipe and separate under the absorption tower, gypsum crystal in the slurries is post precipitation in the fluidisation pipe, from fluidisation pipe bottom in lower linking tube flows into the absorption tower, slurries in the fluidisation pipe isolated part gypsum solution by fluidisation pipe top through upper connecting tube and on get the source mouth and flow in the absorption tower.
Compare with traditional handicraft, the present invention has following effect: the present invention is simple in structure, saves the energy, and the slurries in the pH value measurement mechanism can not need power-equipment to the absorption tower Natural Circulation.The pH meter contact stretches into fluidisation pipe top downwards, and its top is fixed on the top cover by connector, and the pH meter contact is not subjected to the wearing and tearing and the pollution of gypsum crystal in the slurries, and flushing is convenient, has solved the wearing and tearing and the pollution problems of pH meter contact effectively.Thereby only use a pH meter, just can satisfy the requirement of sulfur removal technology, can guarantee certainty of measurement again simultaneously, have the slurries cleaning, measure characteristics easily.Be applicable to the measurement of lime lime-gypsum method coal burning flue gas desulfurization system absorption tower slurry pH value.
(4) description of drawings
Fig. 1 is the schematic diagram of the embodiment of the invention.
Reference numeral: 1-lower linking tube, 2-upper connecting tube, 3-lower linking tube shut-off valve, 4-upper connecting tube shut-off valve, 5-pH meter contact, 6-absorb to get under Tata wall, 7-fluidisation pipe, 8-flushing interface, the 9-and get source mouth, 11-top cover, 12-connector on source mouth, the 10-.
(5) specific embodiment
Embodiment is referring to Fig. 1, and the source-taking apparatus of this measurement pH value of liquid in flue gas desulfurization absorption tower has in the bottom that absorbs Tata wall 6 and gets source mouth 9 under one, has on absorption Tata wall top and gets source mouth 10 on one.
Get the mouth 9 interior downward-sloping lower linking tubes 1 that are inserted with in source under above-mentioned, above-mentioned lower linking tube 1 and the inclination angle a that absorbs between the Tata wall are 15 °.Getting on above-mentioned is inclined upwardly in the source mouth 10 is inserted with a upper connecting tube 2, and upper connecting tube 2 is 18 ° with horizontal angle of inclination beta.The part of upper connecting tube 2 outside the absorption tower connects upper connecting tube shut-off valve 4, the part of lower linking tube 1 outside the absorption tower connects lower linking tube shut-off valve 3, upper connecting tube 2 is communicated with the top of lower linking tube 1 outside the absorption tower, and intersect Y-shaped, lower linking tube 1 be positioned at above-mentioned two the pipe positions, boundary below have the flushing interface 8 that is used to connect cleaning hose, form fluidisation pipe 7 at lower linking tube 1 and position, upper connecting tube 2 boundary to lower linking tube pipeline section suitable for reading, the inwall of above-mentioned fluidisation pipe, upper connecting tube, lower linking tube all has anticorrosive coat.Fluidisation pipe 7 top covers 11 that are stamped elastomeric material suitable for reading, pH meter contact 5 are in top cover inserts the fluidisation pipe downwards, and the upper end of pH meter contact connects the connector 12 of a nut shape, and this connector is placed on above the top cover.
The method of the source-taking apparatus of above-mentioned measurement pH value of liquid in flue gas desulfurization absorption tower is characterized in that step is as follows:
A, open in the bottom that absorbs Tata wall 6 and to get source mouth 9 under one, open and get source mouth 10 on one absorbing Tata wall top; Under the absorption tower, get source mouth 9 with on get the source-taking apparatus that is connected above-mentioned measurement pH value of liquid in flue gas desulfurization absorption tower between the source mouth 10.
B, open upper connecting tube shut-off valve 4 and lower linking tube shut-off valve 3, the liquid in the absorption tower is incorporated in the fluidisation pipe 7 through lower linking tube 1.
C, liquid separate in fluidisation pipe 7, and the downward post precipitation of the gypsum crystal in the liquid flows in the absorption tower through fluidisation pipe and lower linking tube 1, and the solution of cutting out partial gypsum flows in the absorption tower through fluidisation pipe and upper connecting tube 2.So form the Natural Circulation of liquid.
D, by the pH value of the 5 continuous collection liquids of the pH meter contact in the fluidisation pipe, and show numerical value by pH meter.
E, under the effect of absorption tower slurries gravity, new slurries enter fluidisation pipe 7 through lower linking tube 1, form the Natural Circulation of slurries, inlet by lower linking tube shut-off valve and upper connecting tube shut-off valve control absorption tower slurries, pH meter contact 5 is subjected to washing away of circulating fluid and is difficult for being worn and polluting, when needing flushing, open the cleaning hose valve, flushing water washes the gypsum crystal that accumulates on the pH meter contact through flushing interface 8.
Claims (5)
1. a source-taking apparatus of measuring pH value of liquid in flue gas desulfurization absorption tower is characterized in that: have in the bottom that absorbs Tata wall (6) and get source mouth (9) under one, have on absorption Tata wall top and get source mouth (10) on one;
Get the downward-sloping lower linking tube (1) that is inserted with in the source mouth (9) under above-mentioned, getting on above-mentioned is inclined upwardly in the source mouth (10) is inserted with a upper connecting tube (2), the part of upper connecting tube (2) outside the absorption tower connects upper connecting tube shut-off valve (4), the part of lower linking tube (1) outside the absorption tower connects lower linking tube shut-off valve (3), upper connecting tube (2) is communicated with the top of lower linking tube (1) outside the absorption tower, and intersect Y-shaped, the below that is positioned at above-mentioned two pipe positions, boundary at lower linking tube (1) has the flushing interface (8) that is used to connect cleaning hose, form fluidisation pipe (7) at lower linking tube (1) and position, upper connecting tube boundary to lower linking tube pipeline section suitable for reading, fluidisation pipe (7) is suitable for reading top cover (11), pH meter contact (5) inserts downwards in the fluidisation pipe from top cover (11), and the upper end of pH meter contact is connected with top cover by connector (12).
2. the source-taking apparatus of measurement pH value of liquid in flue gas desulfurization absorption tower according to claim 1 is characterized in that: above-mentioned lower linking tube (1) and the inclination angle a that absorbs between the Tata wall are 10-20 °.
3. the source-taking apparatus of measurement pH value of liquid in flue gas desulfurization absorption tower according to claim 1 is characterized in that: above-mentioned upper connecting tube (2) is 15-25 ° with horizontal angle of inclination beta.
4. according to the source-taking apparatus of claim 2 or 3 described measurement pH value of liquid in flue gas desulfurization absorption tower, it is characterized in that: the inwall of above-mentioned fluidisation pipe, upper connecting tube, lower linking tube has anticorrosive coat.
5. an application rights requires the method for the source-taking apparatus of 4 described measurement pH value of liquid in flue gas desulfurization absorption tower, it is characterized in that step is as follows:
A, open in the bottom that absorbs Tata wall (6) and to get source mouth (9) under one, open and get source mouth (10) on one absorbing Tata wall top; Under the absorption tower, get source mouth (9) with on get the source-taking apparatus that is connected above-mentioned measurement pH value of liquid in flue gas desulfurization absorption tower between the source mouth (10);
B, open upper connecting tube shut-off valve (4) and lower linking tube shut-off valve (3), the liquid in the absorption tower is incorporated in the fluidisation pipe (7) through lower linking tube (1);
C, liquid separate in fluidisation pipe (7), and the downward post precipitation of the gypsum crystal in the liquid flows in the absorption tower through fluidisation pipe and lower linking tube (1), and the solution of cutting out partial gypsum flows in the absorption tower through fluidisation pipe and upper connecting tube (2);
D, by the pH value of pH meter contact (5) collection liquid in the fluidisation pipe, and show numerical value by pH meter;
E, under the effect of absorption tower slurries gravity, new slurries enter fluidisation pipe (7) through lower linking tube (1), form the Natural Circulation of slurries, pH meter contact (5) is the pH value of collection liquid in real time, inlet by lower linking tube shut-off valve and upper connecting tube shut-off valve control absorption tower slurries, open the cleaning hose valve, flushing water washes the gypsum crystal that accumulates on the pH meter contact through flushing interface (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710201906XA CN101219334B (en) | 2007-09-29 | 2007-09-29 | Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710201906XA CN101219334B (en) | 2007-09-29 | 2007-09-29 | Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower |
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| CN101219334A CN101219334A (en) | 2008-07-16 |
| CN101219334B true CN101219334B (en) | 2011-04-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807856A (en) * | 2015-04-23 | 2015-07-29 | 航天环境工程有限公司 | Device for measuring pH value of seriflux in absorption tower |
| 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 |
| CN105424549A (en) * | 2015-11-27 | 2016-03-23 | 河南华润电力首阳山有限公司 | Desulfurization equipment and density measurement device thereof |
| CN109406578A (en) * | 2018-10-16 | 2019-03-01 | 华电电力科学研究院有限公司 | A kind of desulfurized gypsum slurry pH value on-line measurement device and its working method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3754434A (en) * | 1971-02-22 | 1973-08-28 | Scient Kit Corp Inc | Chemical analysis |
| CN1695809A (en) * | 2004-05-10 | 2005-11-16 | 富士施乐株式会社 | Method for delivering a fine particle dispersion and device for delivering a fine partide dispersion |
| CN101034042A (en) * | 2007-04-10 | 2007-09-12 | 浙江大学 | Deep ocean hydrothermal sequence sampler |
-
2007
- 2007-09-29 CN CN200710201906XA patent/CN101219334B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3754434A (en) * | 1971-02-22 | 1973-08-28 | Scient Kit Corp Inc | Chemical analysis |
| CN1695809A (en) * | 2004-05-10 | 2005-11-16 | 富士施乐株式会社 | Method for delivering a fine particle dispersion and device for delivering a fine partide dispersion |
| CN101034042A (en) * | 2007-04-10 | 2007-09-12 | 浙江大学 | Deep ocean hydrothermal sequence sampler |
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Address after: 100088, Haidian District, Huayuan Road, Beijing No. 13 courtyard, International Building, 8 floor Patentee after: Guoneng Lang Xinming Environmental Protection Technology Co.,Ltd. Address before: 100088, Haidian District, Huayuan Road, Beijing No. 13 courtyard, International Building, 8 floor Patentee before: BEIJING LUCENCY ENVIRO-TECH Co.,Ltd. |
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Address after: 100039 6th floor, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Water Environmental Protection Co.,Ltd. Country or region after: China Address before: 100088, Haidian District, Huayuan Road, Beijing No. 13 courtyard, International Building, 8 floor Patentee before: Guoneng Lang Xinming Environmental Protection Technology Co.,Ltd. Country or region before: China |