CN201532387U - Device for testing sulfuric dioxide content in flue gas - Google Patents
Device for testing sulfuric dioxide content in flue gas Download PDFInfo
- Publication number
- CN201532387U CN201532387U CN2009200663466U CN200920066346U CN201532387U CN 201532387 U CN201532387 U CN 201532387U CN 2009200663466 U CN2009200663466 U CN 2009200663466U CN 200920066346 U CN200920066346 U CN 200920066346U CN 201532387 U CN201532387 U CN 201532387U
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- CN
- China
- Prior art keywords
- flue gas
- sensor
- dilution
- test
- sampling
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- 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 - Fee Related
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003546 flue gas Substances 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 30
- 239000012895 dilution Substances 0.000 claims abstract description 29
- 238000010790 dilution Methods 0.000 claims abstract description 29
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 abstract description 14
- 239000001301 oxygen Substances 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
A device for testing sulfuric dioxide content in flue gas is composed of a drier (10), a dilution pump (1), a rotor flow meter (2), a first moisture separator (11), a second moisture separator (12), a first sensor (5), a second sensor (6), a first sampling pump (3), a second sampling pump (4), a singlechip (7), a touch screen (8) and a printer (9). The beneficial effects of the device are that (1) it is possible to prevent moisture in the flue gas from adhering on the pipe wall to absorb sulfuric dioxide so as to prevent the phenomenon from disturbing the sulfuric dioxide content. (2) it is possible to prevent low concentration sulfuric dioxide from dilution greatly to affect test accuracy. (3) dilution rate is determined by oxygen variation in the flue gas after dilution, and precision is high; sample gas and dilution gas flow need not to test, such that it is possible to eliminate effect to test of field pressure and temperature variation, and the requirement of the machining precision of a sampling tube is low.
Description
Technical field
The utility model belongs to field of environment engineering technology, relates in particular to a kind of device that is applicable to the sulfur dioxide in flue gas content of test desulfurization facility exit under the high-moisture operating mode.
Background technology
Sulphuric dioxide is the main atmosphere pollution that the coal-burning power plant produces, and is one of major control target of national governments' environmental protection plans.At present, most of fired power generating unit has all disposed the flue gas desulfurization facility.Because flue gas after desulfurization water cut height, the concentration of sulphuric dioxide is lower.Therefore make that traditional electrochemical test method commonly used is difficult to exactly the content of sulfur dioxide in flue gas be implemented test, water droplet can not detect the content of sulphuric dioxide more for a long time even fully in flue gas.Though and adopt infrared ray or the ultraviolet analytical approach comparatively advanced method of can yet be regarded as, can obtain test result comparatively accurately, it involves great expense.
The utility model content
The technical problems to be solved in the utility model is: at the characteristic of high-humidity flue gas, a kind of device that is used to test sulfur dioxide in flue gas content is provided, use this device, can test the content of sulfur dioxide in flue gas exactly, whether the performance of verifying this desulfurization facility meets design requirement, and whether the discharging of sulphuric dioxide satisfies discharging standards.
Technical solution of the present utility model is, described a kind of device that is used to test sulfur dioxide in flue gas content, referring to Fig. 1, form by exsiccator 10, dilution pumps 1, spinner-type flowmeter 2, first dehumidifier 11, second dehumidifier 12, first sensor 5, second sensor 6, first sampling pump 3, second sampling pump 4, single-chip microcomputer 7, touch-screen 8 and printer 9.Wherein said exsiccator 10, dilution pumps 1, spinner-type flowmeter 2 connect in regular turn, for sampling pipe provides dry carrier gas; Wherein said first dehumidifier 11 connects to form first sampling circuit in regular turn with described first sensor 5, first sampling pump 3, allow the flue gas after diluting be evacuated to first sensor 5, by sulfur dioxide in flue gas content after the first sensor 5 test dilutions and the oxygen concentration after the dilution by first sampling pump 3; Described second dehumidifier 12 connects to form second sampling circuit in regular turn with described second sensor 6, second sampling pump 4 again, allows undiluted flue gas be evacuated to second sensor 6 by second sampling pump 4, by the undiluted oxygen concentration of second sensor, 6 tests; The above-mentioned first sensor 5 and the second sensor 6 described single-chip microcomputer 7 that is connected in parallel; This single-chip microcomputer 7 connects above-mentioned touch-screen 8 and printer 9 respectively, forms the instrument control and the output loop that have as shown in Figure 1.
By the of the present utility model a kind of like this device that is used to test sulfur dioxide in flue gas content that constitutes, by the hot-air that utilizes the drying of importing flue gas is diluted, so as to preventing that the sample moisture that drips in the flue gas from resting on sampling pipe tube wall absorption sulphuric dioxide, the accuracy that influence is measured.Converse dilution ratio by flue gas oxygen content and dilution back flue gas oxygen content two-way measure of oxygen content, and then converse the content of sulfur dioxide in flue gas.
The method of conventional calculating sulfur dioxide in flue gas content is just like following formula:
C
SO2 reality=C
The SO2 test* (21-C
O2 reality)/(21-C
The O2 dilution)
In the formula: C
SO2 reality: sulfur dioxide in flue gas concentration;
C
The SO2 test: the sulfur dioxide concentration of sensor 1 test;
C
O2 reality: oxygen concentration in the flue gas, the i.e. oxygen concentration of sensor 2 tests;
C
The O2 dilution: dilution back oxygen concentration, the i.e. oxygen concentration of sensor 1 test.
The beneficial effects of the utility model are:
1) adopts dry hot-air that flue gas is diluted, depend on the phenomenon that the sampling pipe tube wall absorbs sulphuric dioxide in order to prevent the moisture that takes place in the sampling process in the flue gas, thereby prevent that this phenomenon from hindering normally carrying out of test sulfur dioxide in flue gas content work.
2) adopt low dilution ratio that flue gas is diluted, the instrument dilution ratio is 2～5 times, prevents that in the influence of elimination water droplet the low-concentration sulfur dioxide dilution is too big and influences measuring accuracy.Common dilution sampling probe dilution ratio is 50～250 times, and (sulfur dioxide concentration is 100mg/m to flue gas after desulfurization
3About) the general instrument in dilution back is difficult to accurately measure.
3) change definite dilution ratio by the oxygen in the flue gas of dilution back, precision is higher; Without test specimens gas and carrier gas flow, can eliminate on-the-spot pressure, the influence of variation of temperature to testing, the requirement on machining accuracy to the dilution sampling pipe is lower simultaneously.
Description of drawings
Fig. 1 is used to test the structured flowchart of the device of sulfur dioxide in flue gas content for the utility model is a kind of, be denoted as among the figure:
The 1-dilution pumps,
The 2-spinner-type flowmeter,
3-first sampling pump,
4-second sampling pump,
The 5-first sensor,
6-second sensor,
The 7-single-chip microcomputer,
The 8-touch-screen,
The 9-printer,
The 10-exsiccator,
11-first dehumidifier,
12-second dehumidifier.
Embodiment
The sulphuric dioxide tester that is made of said modules, on probation to be proved to be test accurate, stable, easy to use through manufacturing experimently, and reaches designing requirement fully.In the test, when sampling pipe is heated to 100 ℃, open dilution pumps in the recent period, testing crew is regulated spinner-type flowmeter to maximum, and sampling pipe is put into flue, slowly turns spinner-type flowmeter again down, oxygen content in the flue gas of dilution back is stabilized in 12%～18% scope, and sulfur dioxide concentration is at 10mg/m
3More than, after the stable reading, can calculate the sulphuric dioxide actual size by above-mentioned SO 2 from fume cubage formula, and the result is presented on the touch-screen, success of the test.
Claims (1)
1. device that is used to test sulfur dioxide in flue gas content, it is characterized in that, this device is made up of exsiccator (10), dilution pumps (1), spinner-type flowmeter (2), first dehumidifier (11), second dehumidifier (12), first sensor (5), second sensor (6), first sampling pump (3), second sampling pump (4), single-chip microcomputer (7), touch-screen (8) and printer (9), and wherein said exsiccator (10), dilution pumps (1), spinner-type flowmeter (2) connect in regular turn; Wherein said first dehumidifier (11) connects to form first sampling circuit in regular turn with described first sensor (5), first sampling pump (3); Described second dehumidifier (12) connects to form second sampling circuit in regular turn with described second sensor (6), second sampling pump (4) again; Above-mentioned first sensor (5) and second sensor (6) the described single-chip microcomputer (7) that is connected in parallel; This single-chip microcomputer (7) connects above-mentioned touch-screen (8) respectively and printer (9) connects to form instrument control and output loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200663466U CN201532387U (en) | 2009-10-21 | 2009-10-21 | Device for testing sulfuric dioxide content in flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200663466U CN201532387U (en) | 2009-10-21 | 2009-10-21 | Device for testing sulfuric dioxide content in flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532387U true CN201532387U (en) | 2010-07-21 |
Family
ID=42527790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200663466U Expired - Fee Related CN201532387U (en) | 2009-10-21 | 2009-10-21 | Device for testing sulfuric dioxide content in flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532387U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410945A (en) * | 2011-08-05 | 2012-04-11 | 聚光科技(杭州)股份有限公司 | Sulphur ratio on-line monitor and monitoring method |
| CN105044289A (en) * | 2015-07-30 | 2015-11-11 | 北京仁创科技集团有限公司 | Equipment capable of detecting released smoke during core manufacturing or casting from precoated sand and detecting method |
| CN106769246A (en) * | 2016-12-22 | 2017-05-31 | 华电电力科学研究院 | A kind of method and device for power plant sulfur dioxide concentration Site Detection |
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
| CN112964609A (en) * | 2021-01-25 | 2021-06-15 | 国网冀北电力有限公司电力科学研究院 | On-site detection system for smoke pollutants of stove |
-
2009
- 2009-10-21 CN CN2009200663466U patent/CN201532387U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410945A (en) * | 2011-08-05 | 2012-04-11 | 聚光科技(杭州)股份有限公司 | Sulphur ratio on-line monitor and monitoring method |
| 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 |
| CN105044289A (en) * | 2015-07-30 | 2015-11-11 | 北京仁创科技集团有限公司 | Equipment capable of detecting released smoke during core manufacturing or casting from precoated sand and detecting method |
| CN106769246A (en) * | 2016-12-22 | 2017-05-31 | 华电电力科学研究院 | A kind of method and device for power plant sulfur dioxide concentration Site Detection |
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
| CN112964609A (en) * | 2021-01-25 | 2021-06-15 | 国网冀北电力有限公司电力科学研究院 | On-site detection system for smoke pollutants of stove |
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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: HU'NAN HUICUI ENVIRONMENTAL PROTECTION CO., LTD. S Free format text: FORMER OWNER: HU'NAN HUICUI ENVIRONMENTAL PROTECTION CO., LTD. Effective date: 20121105 Owner name: SCIENTIFIC RESEARCH INSTITUTE OF HU'NAN ELECTRIC P Free format text: FORMER OWNER: HUNAN INSTITUTE OF POWER COMPANY EXPERIMENT Effective date: 20121105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121105 Address after: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee after: Science Research Institute of Hunan Electric Power Co., Ltd. Patentee after: Hunan Focus Environmental Protection Technology Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee before: Hunan Institute of Power Company Experiment Patentee before: Hunan Focus Environmental Protection Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20181021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |