CN202814766U - Escape ammonia sampling analyzing device of smoke pretreatment type power plant denitrating system - Google Patents
Escape ammonia sampling analyzing device of smoke pretreatment type power plant denitrating system Download PDFInfo
- Publication number
- CN202814766U CN202814766U CN 201220526204 CN201220526204U CN202814766U CN 202814766 U CN202814766 U CN 202814766U CN 201220526204 CN201220526204 CN 201220526204 CN 201220526204 U CN201220526204 U CN 201220526204U CN 202814766 U CN202814766 U CN 202814766U
- Authority
- CN
- China
- Prior art keywords
- power plant
- denitrating system
- sampling
- escape ammonia
- flue gas
- 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
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000005070 sampling Methods 0.000 title claims abstract description 41
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 25
- 239000000779 smoke Substances 0.000 title abstract description 5
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003546 flue gas Substances 0.000 claims description 23
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003463 adsorbent Substances 0.000 abstract description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to an escape ammonia sampling analyzing device of a smoke pretreatment type power plant denitrating system. The escape ammonia sampling analyzing device comprises a sampling gun connected with a sulfur oxide absorbing device connected with a filtering device, the filtering device is connected with a drying device outside a smoke channel through a connection pipe, and the drying device is communicated with an absorbing bottle through a volume flow meter and an air pump. Excess adsorbent in a SO2 and SO3 absorbing device is utilized to absorb SO2 and SO3 in a smoke sample, loss of NH3 is reduced, and sampling accuracy is improved.
Description
Technical field
The utility model relates to a kind of sampling system of generating plant, mainly for power plant's denitrating system escape ammonia sampling analysis device, for power plant's day-to-day operation is offered help.
Background technology
Along with the pay attention to day by day of country to environmental protection, country begins to pay attention to promoting the use of of denitration technology, power plant is as the blowdown rich and influential family, carrying out progressively carrying out the denitration transformation after desulfurization is transformed, wherein adopt SCR or SNCR all to use the principle of ammonia reducing NOx, exist the part ammonia to have neither part nor lot in the phenomenon of reaction, be referred to as the escaping of ammonia.Escape ammonia causes more greatly ammoniacal liquor or urea waste on the one hand, and can cause secondary pollution, escape ammonia easily forms ammonium salt and is attached on the back-end ductwork metallic walls when being lower than 300 ℃ on the other hand, and metal is caused larger corrosion and then reduces its serviceable life, affects the unit operation security.If escape ammonia size in the time of therefore can measuring actual motion smoothly will improve security and the economy of unit overall operation, reach the purpose of energy-saving and emission-reduction.
Germany generally leaks the ammonium salt concentration in the flying dust of back-end ductwork as afterbody ammonia index, U.S. kentucky university adopts ammonium concentration in the ion selective electrode method test flying dust, but because the unevenness of Fly ash sampling, error is larger.No matter external or domestic, for ammonium concentration in the flying dust measure lack can operation for reference relevant criterion.
Directly to smoke sampling and since ammonia when being lower than 300 ℃ easily and the SO in the flue gas
2, SO
3Stick on the sampling system tube wall in conjunction with forming ammonium salt, sampling result is caused larger error, sampling system is answered special design.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of flue gas pre-service formula power plant denitrating system escape ammonia sampling analysis device is provided, the method quick and precisely, it can guarantee the integrality of ammonia in flue gas gas sampling, and unit operation is estimated.
The technical scheme that the utility model is taked is:
Flue gas pre-service formula power plant denitrating system escape ammonia sampling analysis device, comprise sampling gun, sampling gun connects the oxysulfide absorption plant, the oxysulfide absorption plant links to each other with filtration unit, filtration unit is connected by the outer drying device of connecting pipe and flue, and drying device communicates with absorption bottle through volumetric displacement meter, aspiration pump.
Described oxysulfide absorption plant is built-in with SO
2, SO
3Absorbing agent.
In the described absorption bottle NH is housed
3Absorption liquid.
Described oxysulfide absorption plant is in flue.
Described connecting pipe is emulsion tube.
The beneficial effects of the utility model are:
Under the hot conditions of flue inside, utilize SO
2, SO
3Adsorbent excessive in the absorption plant is with the SO in the flue gas sample
2, SO
3Absorb, reduce NH
3The loss of sampling improves the sampling degree of accuracy.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Wherein, 1. sampling gun, 2. oxysulfide absorption plant, 3. filtration unit, 4. connecting pipe, 5. drying device, 6. volumetric displacement meter, 7. aspiration pump, 8. absorption bottle, 9. furnace wall.
Embodiment
Below in conjunction with accompanying drawing utility model is described further.
As shown in the figure, flue gas pre-service formula power plant denitrating system escape ammonia sampling analysis device, comprise sampling gun 1, sampling gun 1 connects oxysulfide absorption plant 2, oxysulfide absorption plant 2 links to each other with filtration unit 3, filtration unit 3 is connected by the outer drying device 5 of connecting pipe 4 and flue, and drying device 5 communicates with absorption bottle 8 through volumetric displacement meter 6, aspiration pump 7.
Oxysulfide absorption plant 2 is built-in with SO
2, SO
3Absorbing agent is such as alkali.In the absorption bottle 8 NH is housed
3Absorption liquid is such as water.Oxysulfide absorption plant 2 is in flue.Connecting pipe 4 is emulsion tube.
Claims (5)
1. flue gas pre-service formula power plant denitrating system escape ammonia sampling analysis device, it is characterized in that, comprise sampling gun, sampling gun connects the oxysulfide absorption plant, the oxysulfide absorption plant links to each other with filtration unit, filtration unit is connected by the outer drying device of connecting pipe and flue, and drying device communicates with absorption bottle through volumetric displacement meter, aspiration pump.
2. flue gas pre-service formula according to claim 1 power plant denitrating system escape ammonia sampling analysis device is characterized in that described oxysulfide absorption plant is built-in with SO
2, SO
3Absorbing agent.
3. flue gas pre-service formula according to claim 1 power plant denitrating system escape ammonia sampling analysis device is characterized in that, in the described absorption bottle NH is housed
3Absorption liquid.
4. flue gas pre-service formula according to claim 1 power plant denitrating system escape ammonia sampling analysis device is characterized in that described oxysulfide absorption plant is in flue.
5. flue gas pre-service formula according to claim 1 power plant denitrating system escape ammonia sampling analysis device is characterized in that described connecting pipe is emulsion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526204 CN202814766U (en) | 2012-10-15 | 2012-10-15 | Escape ammonia sampling analyzing device of smoke pretreatment type power plant denitrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526204 CN202814766U (en) | 2012-10-15 | 2012-10-15 | Escape ammonia sampling analyzing device of smoke pretreatment type power plant denitrating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202814766U true CN202814766U (en) | 2013-03-20 |
Family
ID=47873625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220526204 Expired - Lifetime CN202814766U (en) | 2012-10-15 | 2012-10-15 | Escape ammonia sampling analyzing device of smoke pretreatment type power plant denitrating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202814766U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879239A (en) * | 2012-10-15 | 2013-01-16 | 山东电力集团公司电力科学研究院 | Flue gas pre-treatment type sampling and analysis device and method for escaping ammonia of denitration system of power plant |
| CN104857832A (en) * | 2015-06-05 | 2015-08-26 | 山东钢铁股份有限公司 | Absorption device of hydrogen sulfide gas |
| CN105467086A (en) * | 2015-12-28 | 2016-04-06 | 国网山东省电力公司电力科学研究院 | Method for measuring flue gas amount of boiler of power station |
| CN107515136A (en) * | 2017-09-21 | 2017-12-26 | 安徽环境科技研究院股份有限公司 | A kind of flue laying dust gathers rifle |
-
2012
- 2012-10-15 CN CN 201220526204 patent/CN202814766U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879239A (en) * | 2012-10-15 | 2013-01-16 | 山东电力集团公司电力科学研究院 | Flue gas pre-treatment type sampling and analysis device and method for escaping ammonia of denitration system of power plant |
| CN104857832A (en) * | 2015-06-05 | 2015-08-26 | 山东钢铁股份有限公司 | Absorption device of hydrogen sulfide gas |
| CN105467086A (en) * | 2015-12-28 | 2016-04-06 | 国网山东省电力公司电力科学研究院 | Method for measuring flue gas amount of boiler of power station |
| CN105467086B (en) * | 2015-12-28 | 2017-03-22 | 国网山东省电力公司电力科学研究院 | Method for measuring flue gas amount of boiler of power station |
| CN107515136A (en) * | 2017-09-21 | 2017-12-26 | 安徽环境科技研究院股份有限公司 | A kind of flue laying dust gathers rifle |
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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 |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |