1、May 2017 English price group 24No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.040.40!%e“2665998www.din.deDIN EN
2、 14791Stationary source emissions Determination of mass concentration of sulphur oxides Standard reference method;English version EN 14791:2017,English translation of DIN EN 14791:2017-05Emissionen aus stationren Quellen Bestimmung der Massenkonzentration von Schwefeloxiden Standardreferenzverfahren
3、;Englische Fassung EN 14791:2017,Englische bersetzung von DIN EN 14791:2017-05Emissions de sources fixes Dtermination de la concentration massique des oxydes de soufre Mthode de rfrence normalise;Version anglaise EN 14791:2017,Traduction anglaise de DIN EN 14791:2017-05SupersedesDIN EN 14791:200604w
4、ww.beuth.deDocument comprises 73 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.05.17This standard has been included in the VDI/DIN Handbook on air quality, Volume 5. DIN EN 14791:2017-05 2 A comma is used as the decimal marke
5、r. National foreword This document (EN 14791:2017) has been prepared by Working Committee CEN/TC 264/WG 16 “Reference measurement methods for NOx, SO2, O2, CO and water vapour emissions” (Secretariat and Convenership: AFNOR, France) of Technical Committee 264 “Air quality” (Secretariat: DIN, Germany
6、), with the active participation of German experts of Kommission Reinhaltung der Luft im VDI und DIN Normenausschuss KRdL (Commission on Air Pollution Prevention of VDI and DIN Standards Committee KRdL). The responsible German body involved in its preparation was VDI/DIN-Kommission Reinhaltung der L
7、uft (KRdL) Normenausschuss, Working Committee NA 134-04-01 AA “Emission measurement techniques”. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5725-2 DIN ISO 5725-2 ISO 5725-6 DIN ISO 5725-6 Amendments This standard differs from DIN E
8、N 14791:2006-04 as follows: a) in Clause 1, Directive 2000/76/EC has been replaced by Directive 2010/75/EU; b) in Clause 2, the normative reference to EN 15259 regarding requirements for measurement sections and sites and for the measurement objective and plan has been included; c) in Clause 3, defi
9、nitions have been reviewed taking into account EN 15259 definitions and the new version of VIM (2012); the detection limit has been deleted from the list of definitions and performance characteristics as repeatability at zero is more suitable; d) in 6.2.6 and 8.6, it has been specified that the abso
10、rption efficiency of the first absorber is to be better than 95 % or the concentration of sulfate ion in the second absorber shall be less than the quantification limit (instead of the detection limit); e) in 8.2, a reference to EN 15259 has been included for determining homogeneity of the flue gas
11、profile; f) in 11.4, the equation of srhas been refined; g) in Clause 12, the standard deviation sr,limithas been recalculated according to new rules specified in EN 14793; h) in Annex A, an estimate of the uncertainty calculated on the basis of reproducibility has been added and replaces the expres
12、sion “reproducibility confidence interval”; i) in Annex C, the presentation of the calculation of the uncertainty budget has been improved; DIN EN 14791:2017-05 3 j) in Annex E, the presentation of the equivalence of the chromatography method with the Thorin method has been improved to be in line wi
13、th EN 14793:2017; some typing errors have been corrected; k) a new Annex F “Calculation of the uncertainty associated with a concentration expressed on dry gas and at a oxygen reference concentration” has been included. Previous editions DIN EN 14791: 2006-04 DIN EN 14791:2017-05 4 National Annex NA
14、 (informative) Bibliography DIN ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method DIN ISO 5725-6, Accuracy (trueness and precision) of measurement methods a
15、nd results Part 6: Use in practice of accuracy values EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14791 January 2017 ICS 13.040.40 Supersedes EN 14791:2005English Version Stationary source emissions - Determination of mass concentration of sulphur oxides - Standard reference method Emission
16、s de sources fixes - Dtermination de la concentration massique des oxydes de soufre - Mthode de rfrence normalise Emissionen aus stationren Quellen - Bestimmung der Massenkonzentration von Schwefeloxiden - Standardreferenzverfahren This European Standard was approved by CEN on 26 September 2016. CEN
17、 members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on appl
18、ication to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Ma
19、nagement Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
20、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Av
21、enue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14791:2017 EEN 14791:2017 (E) 2 Contents Page European foreword . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 Symbols and a
22、bbreviations 13 4.1 Symbols 13 4.2 Abbreviated terms . 14 5 Principle 14 5.1 General . 14 5.2 Measuring principle 14 6 Description of measuring system . 15 6.1 Reagents 15 6.1.1 General . 15 6.1.2 Hydrogen peroxide 15 6.1.3 Water 15 6.1.4 Absorption solution, H2O2. 15 6.1.5 Reagents for chromatograp
23、hic analysis 15 6.1.6 Reagent for Thorin analysis . 16 6.2 Sampling equipment . 17 6.2.1 General . 17 6.2.2 Sampling probe . 17 6.2.3 Filter housing . 17 6.2.4 Particle filter 18 6.2.5 Temperature controller . 18 6.2.6 Absorbers 18 6.2.7 Sample gas pump 18 6.2.8 Gas volume meter 18 6.3 Analysis equi
24、pment . 19 6.3.1 Ion chromatograph 19 6.3.2 Thorin method 19 7 Performance characteristics of the SRM 20 7.1 General . 20 7.2 Performance characteristics of the sampling system . 21 7.3 Performance characteristics of the analysis 21 7.3.1 Sources of uncertainty 21 7.3.2 Performance criterion of anal
25、ysis . 22 7.4 Establishment of the uncertainty budget 22 8 Field operation 23 8.1 Measurement planning 23 8.2 Sampling strategy. 23 8.2.1 General . 23 8.2.2 Measurement section and measurement plane 23 DIN EN 14791:2017-05EN 14791:2017 (E) 3 8.2.3 Minimum number and location of measurement points .
26、24 8.2.4 Measurement ports and working platform . 24 8.3 Assembling the equipment 24 8.4 Heating of the sample gas line . 24 8.5 Leak test . 24 8.6 Performing sampling . 25 8.6.1 Introduction of the sampling probe in the duct 25 8.6.2 Sampling 25 8.6.3 Rinsing of the sampling system and preparation
27、of the samples . 25 8.7 Measurement series 26 8.8 Field blank . 26 8.9 Absorption efficiency 26 8.9.1 General . 26 8.9.2 Test of absorption efficiency 26 9 Analytical procedure . 27 9.1 General . 27 9.2 Ion Chromatography method . 27 9.2.1 General procedure . 27 9.2.2 Interferences 28 9.2.3 Calibrat
28、ion. 28 9.3 Thorin Method . 29 9.3.1 Pre-treatment of sample solution before analysis for Thorin method . 29 9.3.2 General procedure . 29 9.3.3 Preparation of a chemical blank solution 30 9.3.4 Interferents . 30 10 Expression of results . 31 11 Equivalence of Thorin and ion chromatography methods 33
29、 11.1 General . 33 11.2 Range . 33 11.3 Matrix effect 33 11.4 Comparison of repeatability and trueness 33 12 Equivalence of an alternative method 34 13 Measurement report . 34 Annex A (informative) Validation of the method in the field. 35 A.1 General . 35 A.2 Round robin test of analytical methods
30、. 35 A.3 Field tests . 36 A.3.1 General . 36 A.3.2 Characteristics of installations 36 A.3.3 Limits of quantification 38 A.3.4 Repeatability and reproducibility 38 A.3.4.1 General . 38 A.3.4.2 Repeatability 39 A.3.4.3 Reproducibility 41 A.3.5 Absorption efficiency 42 DIN EN 14791:2017-05EN 14791:201
31、7 (E) 4 Annex B (informative) Examples of absorbers . 43 Annex C (informative) Example of assessment of compliance of standard reference method for SO2with requirements on emission measurements 44 C.1 Introduction . 44 C.2 Elements required for the uncertainty determinations 44 C.3 Example of an unc
32、ertainty calculation . 44 C.3.1 Specific conditions in the field. 44 C.3.2 Performance characteristics 46 C.3.3 Model equation and application of rule of uncertainty propagation 47 C.3.3.1 Concentration of SO2. 47 C.3.3.2 Calculation of the combined uncertainty of m,refVand mC. 48 C.3.3.3 Calculatio
33、n of sensitivity coefficients . 48 C.3.3.4 Results of the standard uncertainties calculations 49 C.3.4 Estimation of the combined uncertainty . 52 Annex D (informative) Type of sampling equipment . 53 Annex E (informative) Example of comparison of repeatability and trueness of Thorin Method and Ion
34、Chromatography Method 54 Annex F (informative) Calculation of the uncertainty associated with a concentration expressed on dry gas and at an oxygen reference concentration 64 F.1 Uncertainty associated with a concentration expressed on dry gas . 64 F.2 Uncertainty associated with a concentration exp
35、ressed at a oxygen reference concentration 66 Annex G (informative) Significant technical changes 68 Bibliography . 69 DIN EN 14791:2017-05EN 14791:2017 (E) 5 European foreword This document (EN 14791:2017) has been prepared by Technical Committee CEN/TC 264 “Air quality”, the secretariat of which i
36、s held by DIN. This document supersedes EN 14791:2005. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017.
37、Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Annex G provides details of significant technical changes between this document and th
38、e previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Ma
39、cedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 14791:2017-05EN 14791:2017 (E) 6 1 Scope This Europe
40、an Standard specifies the standard reference method (SRM) for the determination of the sulphuric oxide SO2in flue gases emitted to the atmosphere from ducts and stacks. It is based on a sampling system and two analytical principles: ion chromatography and the Thorin method. This European Standard sp
41、ecifies the performance characteristics to be determined and the performance criteria to be fulfilled by measuring systems based on the measurement method. It applies to periodic monitoring and to the calibration or control of automatic measuring systems (AMS) permanently installed on a stack, for r
42、egulatory or other purposes. This European Standard specifies criteria for demonstration of equivalence of an alternative method to the SRM by application of EN 14793:2017. This European Standard has been validated during field tests on waste incineration, co-incineration and large combustion instal
43、lations. It has been validated for sampling periods of 30 min in the range of 0,5 mg/m3to 2 000 mg/m3of SO2for an ion-chromatography variant and 5 mg/m3to 2 000 mg/m3of SO2for the Thorin method according to emission limit values laid down in the Directive 2010/75/EU. NOTE 1 Emission limit values for
44、 SO2laid down in the Directive 2010/75/EU are in the range of 30 mg/m3to 800 mg/m3. The emission limit values of EU Directives are expressed in units of mg/m3of SO2on dry basis and at standard conditions of 273 K and 101,3 kPa. NOTE 2 The characteristics of installations, the conditions during field
45、 tests and the values of repeatability and reproducibility in the field are given in Annex A. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited appli
46、es. For undated references, the latest edition of the referenced document (including any amendments) applies. prEN 13284-1:2015, Stationary source emissions Determination of low range mass concentration of dust Part 1: Manual gravimetric method EN 14793:2017, Stationary source emission Demonstration
47、 of equivalence of an alternative method with a reference method EN 15259:2007, Air quality - Measurement of stationary source emissions - Requirements for measurement sections and sites and for the measurement objective, plan and report EN ISO 14956:2002, Air quality - Evaluation of the suitability
48、 of a measurement procedure by comparison with a required measurement uncertainty (ISO 14956:2002) ISO/IEC Guide 98-3:2008, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) DIN EN 14791:2017-05EN 14791:2017 (E) 7 3 Terms and definitions For the purp
49、oses of this document, the following terms and definitions apply. 3.1 standard reference method SRM reference method prescribed by European or national legislation SOURCE: EN 15259:2007 3.2 reference method RM measurement method taken as a reference by convention, which gives the accepted reference value of the measurand Note 1 to entry: A reference method is fully described. Note 2 to entry: A reference method can be a manual or an automated method. Note 3 to entry: Alternative methods can be used if equivalence to the reference method ha
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