BS ISO 11057-2011 Air quality Test method for filtration characterization of cleanable filter media《空气质量 可清洗过滤介质过滤特性的试验方法》.pdf
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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11057:2011Air quality Test method forfiltration characterization ofcleanable filter mediaBS ISO 11057:2011 BRITISH STANDARDNational forewordThis British Standard is the UK
2、 implementation of ISO 11057:2011.The UK participation in its preparation was entrusted to TechnicalCommittee EH/2/1, Stationary source emission.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the neces
3、saryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 66021 4ICS 13.040.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Commi
4、ttee on 31 May 2011.Amendments issued since publicationDate Text affectedBS ISO 11057:2011Reference numberISO 11057:2011(E)ISO 2011INTERNATIONAL STANDARD ISO11057First edition2011-05-15Air quality Test method for filtration characterization of cleanable filter media Qualit de lair Mthode dessai pour
5、 la caractrisation de la filtration des filtres lavables BS ISO 11057:2011ISO 11057:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includin
6、g photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published
7、in Switzerland ii ISO 2011 All rights reservedBS ISO 11057:2011ISO 11057:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Terms and definitions .1 3 Gases and materials5 4 Principle .6 5 Standard reference apparatus and procedure .6 5.1 General .6 5.2 Compo
8、nents of the standard reference apparatus9 5.3 Operating parameters for the test .11 5.4 Measured parameters .12 5.5 Test sequences12 5.6 Test preparations and environment 13 5.7 Step-by-step procedures of the standard test .17 6 Procedure and filter media for testing of equivalent apparatus and sel
9、ection of test houses 18 6.1 Procedure and filter media for testing of equivalent apparatus with the standard reference apparatus .18 6.2 Selection of test houses .18 7 Processing of data and presentation of results.19 7.1 Processing of data 19 7.2 Presentation of results19 Annex A (normative) Test
10、apparatus 24 Annex B (informative) Other information and considerations .28 Bibliography30 BS ISO 11057:2011ISO 11057:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). T
11、he work of preparing 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-go
12、vernmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
13、 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a v
14、ote. Attention is drawn to the possibility that 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. ISO 11057 was prepared by Technical Committee ISO/TC 146, Air quality, Subcommittee SC 1, Statio
15、nary source emissions. BS ISO 11057:2011ISO 11057:2011(E) ISO 2011 All rights reserved vIntroduction Cleanable filters are usually employed for the separation of particles from gases containing dust concentrations in the range of some hundred milligrams per cubic metre up to some hundred grams per c
16、ubic metre. Depending on the inlet dust concentrations concerned, a dust cake is more or less rapidly formed upon the surface of the filter medium which is periodically removed in order to maintain the filtration process. With most filters in use at the time of publication, this is usually accomplis
17、hed by injecting a pulse of compressed air from the clean-gas side, i.e. inside the filter bag or cartridge. The design service life of these filters is usually 2 years to 4 years. They provide clean-gas concentrations of some milligrams per cubic metre without an excessive rise in residual pressure
18、 drop for the cleaned filter and a low cleaning frequency, respectively. Although extensive investigations have been carried out concerning the operating conditions and design of filters and cleaning systems as well as the design and selection of the filter media (References 14 to 17), the layout an
19、d operation of bag filters are still extensively based on data which were empirically obtained in industrial-sized installations or pilot plants. The systematic characterization and evaluation of filter media with respect to their relevant long-term operational properties (filtration and cleaning be
20、haviour) and emission, in addition to their well-defined textile properties, are still a major problem not only for the developers and manufacturers of filter media, but also for the producers and users of filter installations. Therefore there is a demand for improved methods for the characterizatio
21、n and evaluation of cleanable filter media. This demand concerns data allowing statements about the filtration properties of a medium in long-term operation, which exceed the data supplied by filter media manufacturers about the non-dusted material. This International Standard is based on VDI 3926 P
22、art 1:200413, ASTM D6830-02:20088, JIS Z 8909-1:200510, and GB/T 6719:20099. BS ISO 11057:2011BS ISO 11057:2011INTERNATIONAL STANDARD ISO 11057:2011(E) ISO 2011 All rights reserved 1Air quality Test method for filtration characterization of cleanable filter media 1 Scope This International Standard
23、specifies a standard reference test method for the comparative characterization of pulse-jet cleanable filter media, to be used in filter elements (e.g. bag filters, pocket filters, cartridge filters) applied in dry gas cleaning under standardized test conditions. The main purpose of testing is to g
24、ain information about both the operational performance and the particle emission of cleanable filter media. It should be noted that while one test apparatus and operating method has been chosen and described herein, it is recognized that other apparatus and operating arrangements can be found accept
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