CN202471670U - Online monitor for content of sulfite of wet desulphurization system - Google Patents
Online monitor for content of sulfite of wet desulphurization system Download PDFInfo
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- CN202471670U CN202471670U CN201220075828XU CN201220075828U CN202471670U CN 202471670 U CN202471670 U CN 202471670U CN 201220075828X U CN201220075828X U CN 201220075828XU CN 201220075828 U CN201220075828 U CN 201220075828U CN 202471670 U CN202471670 U CN 202471670U
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- CN
- China
- Prior art keywords
- groove
- content
- liquid bath
- sulfite
- tank
- Prior art date
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- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 title abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 20
- 230000023556 desulfurization Effects 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 238000004821 distillation Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000033116 oxidation-reduction process Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000004458 analytical method Methods 0.000 abstract description 7
- 238000004448 titration Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract description 4
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract 1
- 239000011734 sodium Substances 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000012086 standard solution Substances 0.000 description 5
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- SNDJGKIVHKOEHY-UHFFFAOYSA-M S(=S)(=O)(O)O.S[Na] Chemical compound S(=S)(=O)(O)O.S[Na] SNDJGKIVHKOEHY-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to an online monitor for the content of sulfite of a wet desulphurization system. The online monitor mainly comprises an electrical system, a potentiometric titrator, a reactive groove, a stirrer, a washing water groove, a distillation water groove, a sample groove, an HCL liquid groove and an I2 liquid groove, wherein the washing water groove, the distillation water groove, the sample groove and the HCL liquid groove are respectively connected with the reactive groove through a counter and an electric control valve. The potentiometric titrator comprises a redox electrode, a Na2S2O3 liquid groove, a burette, a data processing and computing system and a data displaying system. The washing water groove is connected with a washing pipeline of a gas desulfurization system, the distillation water groove is connected with a demineralized water pipeline, and the sample groove is connected with a desulfuration slurry pipeline. The titration analysis system is connected with a to-be-tested material pipeline, thus the online monitor is capable of accurately and automatically testing the content of the sulfite in slurry of an absorption column, realizes the online monitoring of the content of the sulfite of the wet desulphurization system, effectively prevents a sulfite sample from decomposing in processes of sampling, transporting and analyzing, and improves the accuracy of analysis.
Description
Technical field
The utility model belongs to technical analysis and technical field of measuring equipment, relates to a kind of automatic on-line monitoring instrument of wet desulfurization system sulphite content.
Background technology
Along with constantly popularizing of wet method lime stone gypsum flue gas desulfurization technology, the performance driving economy that how to improve desulphurization system more and more draws attention, and a wherein important ring is the oxidation efficiency that improves sulphite.Because coal-fired sulfur changes and the change of unit load; Cause that sulfur dioxide in flue gas content constantly changes; The oxygen utilization of oxidation sulphite also changes thereupon, need in time adjust the air quantity delivered and the oxidation fan method of operation according to slurries Central Asia sulphates content.Real-time online mensuration slurries Central Asia sulphates content can be the adjustment production operation provides foundation.
The mensuration of the slurries Central Asia, present domestic lime stone desulfurization of gypsum system absorption tower sulphates content is through regularly from the slurries of absorption tower, taking a sample, testing in lab analysis then.Because there is certain lag-effect in lab analysis chemical examination work, and sulphite is extremely unstable, changes rapidly behind the chance air, causes the test deviation.Therefore can not be in real time, exactly according to the adjustment of the sulphite content in slurries oxidation air amount.The present domestic wet desulfurization system sulphite content automatic on-line monitoring instrument of not finding as yet.
Summary of the invention
The purpose of the utility model provides a kind of wet desulfurization system sulphite content on-line monitoring appearance, is convenient to accurately, measures automatically and in real time and try out desulphurization system slurries Central Asia sulphates content, for the adjustment of production operation provides reliable foundation.
The utility model wet desulfurization system sulphite content on-line monitoring appearance is mainly by electrical system, potentiometric titrimeter, reactive tank, stirrer, washing tank, distillation tank, sample cell, HCL liquid bath and I
2Liquid bath is formed, washing tank, distillation tank, sample cell, HCL liquid bath and I
2Liquid bath is connected with reactive tank with the electrical control valve through meter respectively.Potentiometric titrimeter comprises oxidation-reduction electrode, Na
2S
2O
3Liquid bath, buret, data processing and computing system and data presentation system.The washing tank links to each other with the desulphurization system flushing pipe, and the distillation tank links to each other with the demineralized water pipeline, and sample cell links to each other with the desulfurization slurry pipeline.
See photolysis, reactive tank, I for preventing sample
2Liquid bath, Na
2S
2O
3The material of liquid bath and buret is brown glass or light tight material.The reactive tank bottom is provided with the discharging of waste liquid valve.
Sulfite oxidation reductometry reaction principle is:
Under acid condition, sulphite is oxidized to sulfate by iodine, and excessive iodine liquid is with the sodium thiosulfate standard solution titration, goes out the content of slurries Central Asia sulfate according to the consumption calculating of hypo solution, and reaction equation is following:
SO
3 2-+?I
2?+?H
2O =?
?SO
4 2-?+?2H
++2I
-
2Na
2S
2O
3+I
2=Na
2S
4O
6?+2NaI
The utility model can test out the content of sulphite in the slurries of absorption tower accurately, automatically, in real time through the titrimetry system is connected with the determined material pipeline of production system, has realized the on-line monitoring of wet desulfurization system sulphite content.On-line monitoring sulphite content, analysis speed is fast, effectively prevents to take a sample, the decomposition of sulphite sample in transportation and the lab analysis process, has improved the accuracy of analyzing.The accuracy of analyzing provides reliable assurance for producing the adjustment operation.
Description of drawings
Fig. 1 is the structure schematic flow sheet of the utility model wet desulfurization system sulphite content on-line monitoring appearance.
Wherein:
1-washing tank, 2-distillation tank, 3-sample cell, 4-meter, 5-HCL liquid bath, 6-I
2Liquid bath, 7-buret, 8-stirrer, 9-oxidation-reduction electrode, 10-potentiometric titrimeter, 11-Na
2S
2O
3Liquid bath, 12-reactive tank, 13-discharging of waste liquid valve.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
The utility model wet desulfurization system sulphite content on-line monitoring appearance is as shown in Figure 1, mainly by electrical system, potentiometric titrimeter 10, reactive tank 12, stirrer 8, washing tank 1, distillation tank 2, sample cell 3, form.Washing tank 1, distillation tank 2, sample cell 3, HCL liquid bath 5 and I
2Liquid bath 6 is connected with reactive tank with the electrical control valve through meter 4, and meter is used for the addition of metered doses of medicament, water, sample.Potentiometric titrimeter comprises oxidation-reduction electrode 9, Na
2S
2O
3Liquid bath 11, buret 7, data processing and computing system and data presentation system.Electrical system provides power for quantitative dosing, heating, stirring, discharge opeing, cleaning, mensuration and the calibration of control.Electrode 9 inserts under the liquid level of reactive tank 12, and titrator can be judged reaction end automatically and quantitatively drip Na
2S
2O
3Solution, data processing and computing system can be according to the Na that imports in advance
2S
2O
3Solution concentration, addition, consumption, sample volume calculate the sample sulfite concentration automatically, at last through digital readout system demonstration, store test results.Discharging of waste liquid valve 13 is installed in the bottom of reactive tank 12, is used for emission test intact waste liquid and cleaning fluid.The washing tank links to each other with the desulphurization system flushing pipe, is used for washing test groove, stirrer and pipeline.The distillation tank links to each other with the demineralized water pipeline, and sample cell 3 links to each other with the desulfurization slurry pipeline.Reactive tank 13, I
2Liquid bath 6, Na
2S
2O
3Liquid bath 11 is the brown glass material with buret 7.Stirrer 8 inserts under the reactive tank liquid level, is used for stirred tank solution.
The concrete operations step of the utility model wet desulfurization system sulphite content on-line monitoring appearance is:
⑴ be connected to automatic on-line monitoring instrument in the pipeline by figure.
⑵ draw the 50ml desulfurization slurry and join in the reactive tank 12, in reactive tank 12, accurately adds excessive 0.1mol/L (c 1/2I
2 ) iodine standard solution, (1+1) hydrochloric acid 5 of adding 5mL after turn on agitator 8 stirs, is placed 5min.
⑶ drip 0.1mol/L Na with potentiometric titrimeter 10
2S
2O
3Solution, turn on agitator 8 is judged terminal point and is write down sodium thiosulfate standard solution consumption volume with potentiometric titrimeter simultaneously.
⑷. do blank test by the said system step fully, the record sodium thiosulfate standard solution consumes volume.
⑸ result calculates
Sulphite content is with SO
3 2-Expression.
SO
3 2-?(mol/L)=?c×(V
0-V
1)?/?V
In the formula: V-sample volume, ml;
V
1The volume of consume sulfur sodium thiosulfate during-titration sample, mL;
V
0The volume of consume sulfur sodium thiosulfate during-titration blank water sample, mL;
C-sodium thiosulfate standard solution concentration, mol/L.
Claims (3)
1. wet desulfurization system sulphite content on-line monitoring appearance is mainly by electrical system, potentiometric titrimeter (10), reactive tank (12), stirrer (8), washing tank (1), distillation tank (2), sample cell (3), HCL liquid bath (5) and I
2Liquid bath (6) is formed, washing tank, distillation tank, sample cell, HCL liquid bath and I
2Liquid bath is connected with reactive tank (12) with the electrical control valve through meter (4) respectively, and potentiometric titrimeter comprises oxidation-reduction electrode (9), Na
2S
2O
3Liquid bath (11), buret (7), data processing and computing system and data presentation system; It is characterized in that: said washing tank links to each other with the desulphurization system flushing pipe; Said distillation tank (2) links to each other with the demineralized water pipeline, and said sample cell (3) links to each other with the desulfurization slurry pipeline.
2. wet desulfurization system sulphite content on-line monitoring appearance according to claim 1 is characterized in that: said reactive tank (12), I
2Liquid bath (6), Na
2S
2O
3The material of liquid bath (11) and buret (7) is a brown glass.
3. wet desulfurization system sulphite content on-line monitoring appearance according to claim 1, it is characterized in that: said reactive tank (12) bottom is provided with discharging of waste liquid valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220075828XU CN202471670U (en) | 2012-03-02 | 2012-03-02 | Online monitor for content of sulfite of wet desulphurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220075828XU CN202471670U (en) | 2012-03-02 | 2012-03-02 | Online monitor for content of sulfite of wet desulphurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471670U true CN202471670U (en) | 2012-10-03 |
Family
ID=46919822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220075828XU Expired - Fee Related CN202471670U (en) | 2012-03-02 | 2012-03-02 | Online monitor for content of sulfite of wet desulphurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297304A (en) * | 2014-08-25 | 2015-01-21 | 浙江工商大学 | AFc/CB/PVB modified electrode preparation and method for determining free state sulfite and amount by electrode |
| CN107037176A (en) * | 2017-05-16 | 2017-08-11 | 河南工程学院 | The method and apparatus of sulfide content in a kind of detection methane gas |
| CN113533624A (en) * | 2021-05-25 | 2021-10-22 | 华电电力科学研究院有限公司 | Online sampling and sulfite measuring system for desulfurized slurry and working method thereof |
-
2012
- 2012-03-02 CN CN201220075828XU patent/CN202471670U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297304A (en) * | 2014-08-25 | 2015-01-21 | 浙江工商大学 | AFc/CB/PVB modified electrode preparation and method for determining free state sulfite and amount by electrode |
| CN107037176A (en) * | 2017-05-16 | 2017-08-11 | 河南工程学院 | The method and apparatus of sulfide content in a kind of detection methane gas |
| CN107037176B (en) * | 2017-05-16 | 2019-03-26 | 河南工程学院 | The method and apparatus of sulfide content in a kind of detection methane gas |
| CN113533624A (en) * | 2021-05-25 | 2021-10-22 | 华电电力科学研究院有限公司 | Online sampling and sulfite measuring system for desulfurized slurry and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS Effective date: 20130322 Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130322 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130322 Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No. Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Patentee before: Hebei Electric Power Research Institute |
|
| 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: 20121003 Termination date: 20160302 |