1、BSI Standards PublicationBS EN ISO 17827-1:2016Solid biofuels Determination of particle size distribution for uncompressed fuelsPart 1: Oscillating screen method using sieves with apertures of 3,15 mm and above BS EN ISO 17827-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK i
2、mplementation of EN ISO 17827-1:2016. It supersedes BS EN 15149-1:2010 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PTI/17, Solid biofuels.A list of organizations represented on this committee can be obtained on request to its secretary.This publica
3、tion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 81468 6 ICS 27.190; 75.160.10 Compliance with a British Standard cannot confer
4、immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17827-1 April 201
5、6 ICS 75.160.10; 27.190 Supersedes EN 15149-1:2010English Version Solid biofuels - Determination of particle size distribution for uncompressed fuels - Part 1: Oscillating screen method using sieves with apertures of 3,15 mm and above (ISO 17827-1:2016) Biocombustibles solides - Dtermination de la d
6、istribution granulomtrique des combustibles non comprims - Partie 1: Mthode au tamis oscillant douverture de maille gale ou suprieure 3,15 mm (ISO 17827-1:2016) Biogene Festbrennstoffe - Bestimmung der Partikelgrenverteilung fr unkomprimierte Brennstoffe - Teil 1: Horizontales Rttelsiebverfahren mit
7、 Sieben mit einer Lochgre von 3,15 mm und darber (ISO 17827-1:2016) This European Standard was approved by CEN on 20 February 2016. CEN 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 stan
8、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application 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 a
9、ny other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep
10、ublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEA
11、N COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17827-1:2016 EB
12、S EN ISO 17827-1:2016EN ISO 17827-1:2016 (E) 3 European foreword This document (EN ISO 17827-1:2016) has been prepared by Technical Committee ISO/TC 238 “Solid biofuels“ in collaboration with Technical Committee CEN/TC 335 “Solid biofuels” the secretariat of which is held by SIS. This European Stand
13、ard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of t
14、his 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. This document supersedes EN 15149-1:2010. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countri
15、es are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
16、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17827-1:2016 has been approved by CEN as EN ISO 17827-1:2016 without any modification. BS EN ISO 17827-1:2016ISO 17827-1:2016(E)Foreword iv1 Scope . 12 Normative re
17、ferences 13 Terms and definitions . 14 Principle 25 Apparatus . 26 Sample preparation . 36.1 Sample size . 36.2 Moisture conditioning 37 Procedure. 48 Calculation 49 Performance characteristics 59.1 Repeatability . 59.2 Reproducibility . 610 Test report . 6Annex A (normative) Determination of the me
18、dian value of a particle size distribution 7Bibliography 9 ISO 2016 All rights reserved iiiContents PageBS EN ISO 17827-1:2016ISO 17827-1:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pr
19、eparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, i
20、n liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IE
21、C Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility t
22、hat some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent
23、declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as informati
24、on about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The committee responsible for this document is ISO/TC 238, Solid biofuels.ISO 17827 consists of the following parts under the general title Solid biofuel
25、s Determination of particle size distribution for uncompressed fuels: Part 1: Oscillating screen method using sieves with apertures of 3,15 mm and above Part 2: Vibrating screen method using sieves with apertures of 3,15 mm and belowNOTE ISO 178272 can also be used for round hole sieves with apertur
26、es of 4,0 mm and 5,6 mm.iv ISO 2016 All rights reservedBS EN ISO 17827-1:2016INTERNATIONAL STANDARD ISO 17827-1:2016(E)Solid biofuels Determination of particle size distribution for uncompressed fuels Part 1: Oscillating screen method using sieves with apertures of 3,15 mm and above1 ScopeThis part
27、of ISO 17827 specifies a method for the determination of the size distribution of particulate biofuels by the horizontally oscillating screen method. It applies to particulate uncompressed fuels with a nominal top size of 3,15 mm and above, e.g. wood chips, hog fuel, olive stones, etc. The method is
28、 intended to characterize material up to a particle size class of P63. For larger P-classes, the characterization is mainly done by hand sorting.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application.
29、For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 33102, Test sieves Technical requirements and testing Part 2: Test sieves of perforated metal plateISO 16559, Solid biofuels Terminology,
30、 definitions and descriptionsISO 172251, Solid biofuels Fuel specifications and classes Part 1: General requirementsISO 1782721), Solid biofuels Determination of particle size distribution for uncompressed fuels Part 2: Vibrating screen method using sieves with apertures of 3,15 mm and belowISO 1813
31、41, Solid biofuels Determination of moisture content Oven dry method Part 1: Total moisture Reference methodISO 181342, Solid biofuels Determination of moisture content Oven dry method Part 2: Total moisture Simplified methodEN 14778, Solid biofuels SamplingEN 14780, Solid biofuels Sample preparatio
32、n3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 16559 and the following apply.3.1median value of the size distributionmedian value d50 that separates a distribution into two equal partsNote 1 to entry: Graphically, the median value is the intercept p
33、oint of the cumulative size distribution curve with the 50 % horizontal line.1) To be published. ISO 2016 All rights reserved 1BS EN ISO 17827-1:2016ISO 17827-1:2016(E)3.2sieve fractionmaterial collected on a sieve4 PrincipleA laboratory sample is subjected to sieving through horizontally oscillatin
34、g sieves, sorting the particles in decreasing size classes by mechanical means.5 Apparatus5.1 Sieves, an appropriate number of either circular or rectangular sieves with a minimum effective sieve area of 1 200 cm2is required for the test.The sieves shall have round perforated holes in metal plate in
35、 accordance with ISO 3310-2. The frame of the sieves shall have a height that will enable the sieves to contain the sample and allows a free movement of the sample during the sieving process.The number of sieves and the aperture sizes of the sieves shall be chosen in accordance with the size specifi
36、cation for the actual test sample material (see also ISO 17225-1).NOTE 1 For laboratory samples with a nominal top size of less than 10 mm, an effective sieve area of less than 1 200 cm2is adequate.NOTE 2 For laboratory samples such as wood chips, the following set of sieves may be selected: 3,15 mm
37、; 8,0 mm; 16 mm; 31,5 mm; 45 mm; 63 mm. If no particles are caught by the larger sieves, these can be omitted from the set. For further size distribution determination of the fraction passing through the 3,15 mm sieve, see ISO 17827-2.NOTE 3 Sieve sizes above 63 mm are not useful since the oscillati
38、on might not force the particles to orientate perpendicular to the plane of the sieves. Furthermore, the distance to the sieve below will have to be longer than the usual 80 mm in order to allow the long and slim particles to pass through the holes.For checking compliance with particle size specific
39、ation in ISO 17225-1, only those sieve sizes which have limit values are required.5.2 Collecting pan, a collecting pan of adequate size is required for collection of material passing through the sieves.5.3 Weighing containers, an adequate number of weighing containers are required.The weighing of th
40、e sieved particle fractions can be performed either by weighing the remaining material directly on the tarred weighed sieves or by collecting and weighing the material in weighing containers. 5.4 Mechanical sieving equipmentThe sieving operation shall be horizontally oscillating (one or two dimensio
41、nal) using an appropriate stroke-frequency depending on the type of material being analyzed. Some sieving machines have adjustable parameters. The results of the sieving may differ depending on how adjustable parameters are controlled. It is therefore important for comparative purposes to report how
42、 the adjustable parameters are set in terms of frequency, amplitude, duration, etc. If machines have adjustable dimensionless settings, an estimate of the adjustable degree shall be recorded to the best of the ability of the operator.For a principle drawing of the sieving operation, see Figure 1.NOT
43、E 1 Be aware that oscillating at too low of a frequency can lead to incomplete particle segregation. The minimum frequency can be determined by conducting pre-tests.2 ISO 2016 All rights reservedBS EN ISO 17827-1:2016ISO 17827-1:2016(E)NOTE 2 Results which are created by using equipment applying thr
44、ee dimensional movement might differ from results obtained with an apparatus as described above.123Key1 increasing hole diameter2 material addition3 material flow direction4 oscillating directionFigure 1 Principle of the sieving operation5.5 Balance, shall be capable of reading to the nearest 0,1 g.
45、6 Sample preparation6.1 Sample sizeA laboratory sample shall be obtained in accordance with EN 14778 and a test sample of minimum eight litres shall be extracted using volume reduction methods in accordance with EN 14780. For solid biofuels where 100 % of the particles will pass through a sieve with
46、 45 mm aperture, a minimum sample size of four litres can be used.The laboratory sample should include sufficient material for determination of size distribution and moisture content.Depending on the size of the sieves, the test sample may need to be divided into several test portions, which are pro
47、cessed in sequential sieving operations. This is to ensure that the filling height on the upper sieve shall never exceed 5 cm. This procedure of sequential processing also applies if test samples larger than eight litres are processed.6.2 Moisture conditioningThe laboratory sample shall be sieved at
48、 moisture content below 20 w-% wet basis, thus preventing the particles from sticking together or losing moisture during the sieving process. If necessary, the laboratory sample shall be pre-dried. Drying shall be done in accordance with EN 14780.NOTE By pre-drying, as described in EN 14780, the lab
49、oratory sample is brought into equilibrium with the humidity of the surrounding atmosphere. ISO 2016 All rights reserved 3BS EN ISO 17827-1:2016ISO 17827-1:2016(E)Determine the moisture content of the material to be sieved on a separate test sample by following the procedure given in ISO 18134-1 or ISO 18134-2. The moisture content shall be determined and reported concurrently with the particle size distribution determination.7 ProcedureThe test sample to be used for sieving shall be weighed to th
