1、CAN/CGSB-3.0 No. 140.1-2017Supersedes CAN/CGSB-3.0 No. 140.1-2005National Standard of CanadaCanadian General Standards BoardMethods of testing petroleum and associated productsLow temperature flow test (LTFT) for diesel fuelsThe CANADIAN GENERAL STANDARDS BOARD (CGSB), under whose auspices this stan
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22、E QUEEN IN RIGHT OF CANADA, as represented by the Minister of Public Services and Procurement, the Minister responsible for the Canadian General Standards Board (2017).No part of this publication may be reproduced in any form without the prior permission of the publisher.Methods of testing petroleum
23、 and associated productsLow temperature flow test (LTFT) for diesel fuelsCETTE NORME NATIONALE DU CANADA EST DISPONIBLE EN VERSIONS FRANAISE ET ANGLAISE.ICS 71.040.50NATIONAL STANDARD OF CANADA CAN/CGSB-3.0 No. 140.1-2017Supersedes CAN/CGSB-3.0 No. 140.1-2005CAN/CGSB-3.0 No. 140.1-2017 CGSB 2017 All
24、 rights reservedCANADIAN GENERAL STANDARDS BOARDCommittee on Petroleum Test Methods(Voting membership at date of approval)ChairWispinski, D. VUV Analytics (User)General interest categoryMacLean, G. Intertek Commodities Division Marotta, L. PerkinElmerMnard, L. Advanced Engine Technology Ltd. Pickard
25、, A.L. ConsultantProducer categoryAllain, T. Irving Oil Ltd.Boroniec, J. Suncor Energy Products PartnershipGupta, R. Husky Energy Lee, I. Archer Daniels MidlandPorter, S. Renewable Industries CanadaSouthard, A. Imperial Oil Ltd.Hiscock, R. North AtlanticYoung, R. Shell Canada Ltd. Regulator category
26、Tardif, M. Environment and Climate Change CanadaUser categoryGaudet, N. Department of National DefenceHall, A. Natural Resources CanadaHanganu, A. Inspectorate A Bureau Veritas Group CompanyHaymour, W. Maxxam Analytics Inc.Johnston, J Innotech AlbertaLevesque, P. SGS Canada Inc. Moser, P. Saskatchew
27、an Research CouncilPama, M. Certispec Services Inc.Secretary (non-voting)Lozano, A. Canadian General Standards BoardAcknowledgment is made for the translation of this National Standard of Canada by the Translation Bureau of Public Services and Procurement Canada.CAN/CGSB-3.0 No. 140.1-2017i CGSB 201
28、7 All rights reservedContents PageIntroduction . ii1 Scope . 12 Normative references . 13 Summary of method 24 Significance and use . 25 Apparatus . 26 Procedure . 37 Report 58 Precision . 5Annex A (normative) Verification procedure for LTFT wire filter screens . 8Bibliography . 10iiCAN/CGSB-3.0 No.
29、 140.1-2017 CGSB 2017 All rights reservedIntroductionThis 2017 edition of CAN/CGSB-3.0 No.140.1 includes a note to address cases whereby wax can form at temperatures significantly above cloud point, as well as clarifying information on testing equipment and sample handling.1 CGSB 2017 All rights res
30、ervedCAN/CGSB-3.0No. 140.1-2017Supersedes CAN/CGSB-3.0 No. 140.1-2005Low temperature flow test (LTFT) for diesel fuels1 ScopeThis method describes a procedure for determining the filter plugging tendency of diesel fuels at low temperature usually due to the formation of wax crystals (see Note in 6.1
31、).The method applies to all distillate diesel fuels. Fuels are expected to provide satisfactory fuel flow in automotive equipment at temperatures equal to or higher than the minimum pass temperature as described in 3.1.1.This method is referenced and compared in ASTM D4539.The testing and evaluation
32、 of a product against this method may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establi
33、sh appropriate health and safety practices in conjunction with any applicable regulatory requirements prior to its use.2 Normative referencesThe following normative documents contain provisions that, through reference in this text, constitute provisions of this method. The referenced documents may b
34、e obtained from the sources noted below.NOTE The addresses provided below were valid at the date of publication of this method.An undated reference is to the latest edition or revision of the reference or document in question, unless otherwise specified by the authority applying this method. A dated
35、 reference is to the specified revision or edition of the reference or document in question.2.1 ASTM International D341 Standard Practice for Viscosity-Temperature Charts for Liquid Petroleum Products D2500 Standard Test Method for Cloud Point of Petroleum Products and Liquid FuelsD4539 Standard Tes
36、t Method for Filterability of Diesel Fuels by Low-Temperature Flow Test (LTFT) D5771 Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Optical Detection Stepped Cooling Method) D5772 Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Linear Coolin
37、g Rate Method) D5773 Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Constant Cooling Rate Method).2.1.1 SourceThe above may be obtained from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428- 2959, U.S.A., telephone 610-832-9585, fax 610-832-9555, W
38、eb site www.astm.org, or from IHS Markit, 200-1331 MacLeod Trail SE, Calgary, Alberta T2G 0K3, telephone 613-237-4250 or 1-800-267-8220, fax 613-237-4251, Website .2CAN/CGSB-3.0 No. 140.1-2017 CGSB 2017 All rights reserved2.2 Coordinating Research Council (CRC) CRC-528 (9/83) Diesel Fuel Low-Tempera
39、ture Operability Field Test.2.2.1 SourceThe above may be obtained from the Coordinating Research Council at jantuckercrcao.org. You may also contact the CRC as follows: 5755 North Point Parkway Suite 265; Alpharetta, GA 30022; Telephone: 678-795-0506, Fax: 678-795-0509.2.3 SAE InternationalSAE Techn
40、ical Paper 982576 The Use of Flow Improved Diesel Fuel at Extremely Low Temperatures.2.3.1 SourceThe above may be obtained from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, U.S.A. Telephone 1-877-606-7323 (Canada and U.S. only) or (724) 776-4970 (outside Canada and U.S.). Fa
41、x (724) 776-0790. Web site www.sae.org.3 Summary of method 3.1 The temperature of a series of 200 mL samples of test fuel is gradually lowered to the desired testing temperature at a controlled cooling rate of 1C/h. At 1C intervals, a sample from the series is filtered through a 17 m screen at 20 kP
42、a gauge vacuum (20 kPa below atmospheric pressure).3.1.1 This procedure is repeated until a sample from the series does not pass the test. The minimum pass temperature is the lowest temperature, expressed as a multiple of 1C, at which a minimum 180 mL of sample, when cooled under the prescribed cond
43、itions, can be filtered in 60 s or less.3.2 Alternatively, a single sample may be cooled as described in 3.1 and tested at a specified temperature to determine if it passes or fails at that temperature.4 Significance and use 4.1 The low temperature flow test helps evaluate the filterability of diese
44、l fuels at low temperatures where wax plugging of diesel fuel systems can restrict the operation of automotive equipment. Fuels passing this test usually provide satisfactory flow performance at temperatures equal to or higher than the minimum LTFT temperature (refer to CRC Report No. 528). The test
45、 method is especially useful for evaluating fuels containing flow improver additives.4.2 This test can be used as a measure of the flow performance of diesel fuels at low temperatures by petroleum refiners, marketers, distributors, consumers, and others concerned with tailoring and handling diesel f
46、uels for automotive use.5 Apparatus 5.1 Glass bottles: Several clear, heat-resistant, wide mouthed bottles or tall form beakers having 240 to 300 mL capacity and 50 to 60 mm I.D.5.2 Filtration assembly (see Figure 1).CAN/CGSB-3.0 No. 140.1-20173 CGSB 2017 All rights reserved5.3 Filter (see Figure 2)
47、: The wire filter screen1(fine wire mesh cloth, 304 SS sintered screen) is a twill Dutch weave mesh with a nominal filtration rating of 17 m. The mesh is 65 wires/cm (165 wires/in.) by 303 to 315 wires/cm (770 to 800 wires/in.). The wire strands have diameters of 0.0071 cm (0.0028 in.) and 0.0046 cm
48、 (0.0018 in.), respectively. The nominal filtration rating indicates a 98% removal by mass of all particles equal to or greater than 17 m.5.4 Temperature measuring device: Thermometer (type 114C for air baths or type 5C for liquid baths) calibrated under total immersion conditions, spanning the temp
49、erature range of the test and calibrated in at least 0.5C increments, or a thermocouple or RTD thermister.5.5 Cooling bath: capable of cooling multiple samples to the required temperature, in a controlled manner of 1.0 0.1C/h with a maximum deviation of 0.5C from the ramp, using either refrigerated air or liquid. The size and shape of the bath are optional. In an air bath, the air should circulate around all sides of the test bottle or beaker, and the bottle or beaker should sit on an insulat
