CN108573102A - A kind of SCR denitration device air leak rate of air curtain computational methods - Google Patents
A kind of SCR denitration device air leak rate of air curtain computational methods Download PDFInfo
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- CN108573102A CN108573102A CN201810325321.7A CN201810325321A CN108573102A CN 108573102 A CN108573102 A CN 108573102A CN 201810325321 A CN201810325321 A CN 201810325321A CN 108573102 A CN108573102 A CN 108573102A
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- Prior art keywords
- scr denitration
- denitration device
- air
- computational methods
- leak rate
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Links
- 238000000205 computational method Methods 0.000 title claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 238000010790 dilution Methods 0.000 claims abstract description 11
- 239000012895 dilution Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of SCR denitration device air leak rate of air curtain computational methods, this method is to remove the dilution air quantity for being used to convey denitrification reducing agent from inleakage, only calculates from SCR denitration device walling of flue and leaks into the air capacity come, and the formula of computational methods is：Moreover, the QEnter、QGo outThe flue gas flow of description is in standard state, 6%O2Under flue gas flow, the QDilute windThe fan delivery of description is standard state, 6%O2Under fan delivery.The present invention is used as the factor for participating in calculating by increasing SCR denitration device dilution air rate of discharge in detection, as calculate gained SCR denitration device air leak rate of air curtain more accurately and science, also it is more in line with the practical operation situation of equipment, more accurate data supporting is provided for the Scientific evaluation of SCR denitration device.
Description
Technical field
The invention belongs to engineering measuring technology field, especially a kind of SCR denitration device air leak rate of air curtain computational methods.
Background technology
As environmental protection and its related industry attention degree is gradually increased in China, to the evaluation of environmental protection equipment and detection side
Method is greatly improved, wherein the desulphurization and denitration testing techniques of equipment to boiler smoke has corresponding standards and norms.But
Examination criteria at this stage there is a problem that it is excessively simple, for the ease of scene detection and calculating, the On-the-spot factor of consideration
It is less.Computational methods wherein there is with the inspection method of selective catalytic reduction reaction (abbreviation SCR) denitrification apparatus air leak rate of air curtain
Simply, consider the less situation of other factors.It only accounts for calculating by the method for calculating denitrification apparatus import and export amount of flue gas emission
Air leak rate of air curtain does not have the air for considering to be blown by spray ammonia dilution air in denitrification apparatus flue, these enter the air in flue
It is not that the air of flue is leak by device outer wall, but the required air of technical matters, therefore denitrification apparatus should not be can be regarded as
Leak out.The invention is exactly to study a kind of computational methods of novel SCR denitration device air leak rate of air curtain.
Invention content
The purpose of the present invention is in view of the deficiencies of the prior art, and propose a kind of SCR denitration device air leak rate of air curtain computational methods.
The present invention solves its technical problem and following technical scheme is taken to realize：
A kind of SCR denitration device air leak rate of air curtain computational methods, this method are will to be used to convey the dilution air quantity of denitrification reducing agent
It is removed from inleakage, only calculates from SCR denitration device walling of flue and leak into the air capacity come, the formula of computational methods is as follows：
In formula：ξ --- SCR denitration device air leak rate of air curtain, %；
QEnter--- SCR denitration device inlet flue gas flow, Nm3/h；
QGo out--- SCR denitration device exiting flue gas flow, Nm3/h；
QDilute wind--- SCR denitration device dilution air air quantity, Nm3/h。
Moreover, the QEnter、QGo outThe flue gas flow of description is in standard state, 6%O2Under flue gas flow, the QDilute windDescription
Fan delivery be standard state, 6%O2Under fan delivery.
The advantages and positive effects of the present invention are：
The present invention by detection in increase SCR denitration device dilution air rate of discharge be used as participate in calculating because
Element, as calculate gained SCR denitration device air leak rate of air curtain more accurately and science, be also more in line with the actual motion feelings of equipment
Condition provides more accurate data supporting for the Scientific evaluation of SCR denitration device, guarantor is provided for the reasonable operation of energy-saving and emission-reduction
Barrier.
Specific implementation mode
The embodiment of the present invention is further described below：It is emphasized that embodiment of the present invention is explanation
Property, without being restrictive, therefore the present invention is not limited to the embodiments described in specific implementation mode, every by this field
The other embodiment that technical staff obtains according to the technique and scheme of the present invention, also belongs to the scope of protection of the invention.
A kind of SCR denitration device air leak rate of air curtain computational methods, this method are will to be used to convey the dilution air quantity of denitrification reducing agent
It is removed from inleakage, only calculates from SCR denitration device walling of flue and leak into the air capacity come, be more in line with SCR denitration device
Operation characteristic, the formula of computational methods is as follows：
In formula：ξ --- SCR denitration device air leak rate of air curtain, %；
QEnter--- SCR denitration device inlet flue gas flow (standard state, 6%O2), Nm3/h；
QGo out--- SCR denitration device exiting flue gas flow (standard state, 6%O2), Nm3/h；
QDilute wind--- SCR denitration device dilution air air quantity (standard state, 6%O2), Nm3/h。
By the air leak rate of air curtain for the SCR denitration device that above-mentioned formula calculates, denitration dilution air flow is increased to air leak rate of air curtain
Influence, make result of calculation more close to actual conditions, it is also more rationally and accurate.
Claims (2)
1. a kind of SCR denitration device air leak rate of air curtain computational methods, it is characterised in that：This method will be used to convey denitrification reducing agent
Dilution air quantity is removed from inleakage, is only calculated from SCR denitration device walling of flue and is leaked into the air capacity come, the public affairs of computational methods
Formula is as follows：
In formula：ξ --- SCR denitration device air leak rate of air curtain, %；
QEnter--- SCR denitration device inlet flue gas flow, Nm3/h；
QGo out--- SCR denitration device exiting flue gas flow, Nm3/h；
QDilute wind--- SCR denitration device dilution air air quantity, Nm3/h。
2. SCR denitration device air leak rate of air curtain computational methods according to claim 1, it is characterised in that：The QEnter、QGo outDescription
Flue gas flow is in standard state, 6%O2Under flue gas flow, the QDilute windThe fan delivery of description is standard state, 6%O2Under wind
Fan delivery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325321.7A CN108573102A (en) | 2018-04-12 | 2018-04-12 | A kind of SCR denitration device air leak rate of air curtain computational methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325321.7A CN108573102A (en) | 2018-04-12 | 2018-04-12 | A kind of SCR denitration device air leak rate of air curtain computational methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108573102A true CN108573102A (en) | 2018-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810325321.7A Pending CN108573102A (en) | 2018-04-12 | 2018-04-12 | A kind of SCR denitration device air leak rate of air curtain computational methods |
Country Status (1)
| Country | Link |
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| CN (1) | CN108573102A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007751A (en) * | 2012-12-21 | 2013-04-03 | 江苏科行环境工程技术有限公司 | Process system utilizing preheated air to achieve flue gas denitration |
| CN103105269A (en) * | 2011-11-09 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Measuring method of air leakage rate of primary air of air pre-heater |
| CN104021273A (en) * | 2014-05-08 | 2014-09-03 | 广东电网公司电力科学研究院 | Method for evaluating influences of denitration system on coal consumption of coal-fired unit |
| US20160032804A1 (en) * | 2013-03-07 | 2016-02-04 | Scania Cv Ab | Method pertaining to an scr system and an scr system |
| CN105866338A (en) * | 2016-04-25 | 2016-08-17 | 国网天津市电力公司 | Efficiency calculation method for novel SCR (Selective Catalytic Reduction) denitration device |
| CN107694300A (en) * | 2016-08-08 | 2018-02-16 | 中冶长天国际工程有限责任公司 | The ammonia spraying amount control method and device of active carbon desulfurization denitrating system |
-
2018
- 2018-04-12 CN CN201810325321.7A patent/CN108573102A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105269A (en) * | 2011-11-09 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Measuring method of air leakage rate of primary air of air pre-heater |
| CN103007751A (en) * | 2012-12-21 | 2013-04-03 | 江苏科行环境工程技术有限公司 | Process system utilizing preheated air to achieve flue gas denitration |
| US20160032804A1 (en) * | 2013-03-07 | 2016-02-04 | Scania Cv Ab | Method pertaining to an scr system and an scr system |
| CN104021273A (en) * | 2014-05-08 | 2014-09-03 | 广东电网公司电力科学研究院 | Method for evaluating influences of denitration system on coal consumption of coal-fired unit |
| CN105866338A (en) * | 2016-04-25 | 2016-08-17 | 国网天津市电力公司 | Efficiency calculation method for novel SCR (Selective Catalytic Reduction) denitration device |
| CN107694300A (en) * | 2016-08-08 | 2018-02-16 | 中冶长天国际工程有限责任公司 | The ammonia spraying amount control method and device of active carbon desulfurization denitrating system |
Non-Patent Citations (3)
| Title |
|---|
| 丁连生等: "SCR烟气脱硝技术在宁海电厂4号机组上的应用", 《热力发电》 * |
| 李伟艳等: "焦炉烟道气加热法SCR脱硝工艺物料平衡计算方法与分析", 《煤化工》 * |
| 李曈: "基于SCR反应器NOx均匀度测试的脱硝系统超低排放改造", 《环境工程学报》 * |
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Application publication date: 20180925 |