ASTM_D_6830_-_02_2008.pdf

Designation:D683002(Reapproved 2008)Standard Test Method forCharacterizing the Pressure Drop and FiltrationPerformance of Cleanable Filter Media1This standard is issued under the fixed designation D6830;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method characterizes the operational perfor-mance of cleanable filter media under specified laboratoryconditions.1.2 This test method determines the airflow resistance,drag,cleaning requirements,and particulate filtration performance ofpulse cleaned filter media.1.3 This test method determines the comparative perfor-mance of cleanable filter media.1.4 The results obtained from this test method are useful inthe design,construction,and selection of filter media.1.5 The results obtained by this test method should not beused to predict absolute performance of full scale fabric filter(baghouse)facilities,however these results will be useful inselection of proper filter media and identification of recom-mended operating parameters for these full scale fabric filterfacilities.1.6 The values stated in SI units are to be regarded asstandard.The values in parenthesis are for information only.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD461 Test Methods for Felt(Withdrawn 2003)3D737 Test Method for Air Permeability of Textile FabricsE832 Specification for Laboratory Filter PapersF740 Definitions of Terms Relating to Filtration(Withdrawn2002)32.2 Other Standards:Draft Generic Verification Protocol for Baghouse FiltrationProducts4Standard Operating Procedures for Verification Testing ofBaghouse Filtration Products Using LTG/FEMA TestApparatus,Draft,December5VDI 3926,Part 2 Testing of Filter Media for CleanableFilters under Operational Conditions63.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 fabric conditioning periodthe period during whichthe fabric specimen is conditioned within the test apparatus bysubjecting it to 10 000 rapid compressed air cleaning pulses at3-5 seconds between pulses.During the conditioning periodthe specimen is subjected to test method specifications for dustand gas flow rates.3.1.2 fabric recovery periodtime period following theconditioning period during which the fabric is allowed torecover from rapid pulsing.The fabric recovery period requires30 filtration cycles under normal filtration cycles.During therecovery period the fabric is subjected to test method specifi-cations for dust and gas flow rates.3.1.3 filtration velocityvolumetric is the flow rate per unitface area.Also referred to as gas-to-cloth ratio(G/C),orair-to-cloth ratio(A/C).3.1.4 filtration cyclea cycle in the filtration process inwhich the particulate matter is allowed to form a dust cake onthe face area of the test specimen with no disturbances from apulse of compressed air to clean the dust cake from the test1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.03 on AmbientAtmospheres and Source Emissions.Current edition approved April 1,2008.Published July 2008.Originallyapproved in 2002.Last previous edition approved in 2002 as D6830-02.DOI:10.1520/D6830-02R08.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Generic Verification Protocol For Baghouse Filtration Products,RTI,ResearchTriangle Park,NC,September 2001.5Test/QA Plan For The Verification Testing of Baghouse Filtration Products,ETS,Inc.,October 2000.6Verein Deutscher Ingenieure(VDI 3926,Part 2),Testing of Filter Media ForCleanable Filters under Operational Conditions,December,1994.Availble fromBeuth Verlag GmBH,10772 Berlin,Germany.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 specimen.The filtration cycle is the time period between twoconsecutive cleaning or pulse cycles.3.1.5 filtration cycle timethe duration of time,measured inseconds or minutes,defined by one filtration cycle.Alsoreferred to as time between cleaning cycles,or pulse cycles.3.1.6 normal filtration cyclea filtration cycle specified forthis test method in which the dust cake is allowed to form onthe test specimen until a differential pressure of 1000 P