ASTM D4931-06(2017) Standard Test Method for Gross Moisture in Green Petroleum Coke.pdf
《ASTM D4931-06(2017) Standard Test Method for Gross Moisture in Green Petroleum Coke.pdf》由会员分享,可在线阅读,更多相关《ASTM D4931-06(2017) Standard Test Method for Gross Moisture in Green Petroleum Coke.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D4931 06 (Reapproved 2017)Standard Test Method forGross Moisture in Green Petroleum Coke1This standard is issued under the fixed designation D4931; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. 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 covers both the preparation procedurefor samples containing free water (air drying loss (ADL) ongross moisture
3、samples) and the determination of the grossmoisture content of green petroleum coke.1.2 The values stated in SI units are to be regarded asstandard.1.2.1 ExceptionThe values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any,
4、associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationall
5、y recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D2013 Practice
6、 for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD3302 Test Method for Total Moisture in CoalE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 air drying, na proce
7、ss of partial drying of a greenpetroleum coke sample to bring it to near equilibrium with theatmosphere in the room in which further reduction/division ofthe petroleum coke sample is to take place.3.1.2 air dry loss, ADL, nthe loss in mass, expressed as apercentage, resulting from each air drying op
8、eration.3.1.3 free water, nvisible unbound water in the sample.3.1.4 green petroleum coke, nsame as raw petroleumcoke.3.1.5 gross moisture, nthat moisture determined as theloss in mass in an air atmosphere under rigidly controlledconditions of temperature, time, and air flow.3.1.5.1 DiscussionTest M
9、ethod D3302 prescribes theabove controlled conditions.3.1.6 petroleum coke, nsolid, carbonaceous residue pro-duced by thermal decomposition of heavy petroleum fractions,or cracked stocks, or both.3.1.7 residual moisture, nthat moisture remaining in thesample after air drying.3.1.8 total moisture, ns
10、ynonym for gross moisture.4. Summary of Test Method4.1 This test method is based on the loss in mass of a greenpetroleum coke sample in an air atmosphere under controlledconditions of temperature, time, and air flow.4.1.1 Preparation Procedure shall be used when the petro-leum coke sample contains f
11、ree water. The gross moisturesample is weighed and air dried to equilibrate it with theatmosphere. Determination of residual moisture is that deter-mined using the Drying Oven Method. Air drying and residualmoisture losses are combined to report gross moisture.4.1.2 Drying Oven Method shall be used
12、in routine com-mercial practice when the sample does not contain free water.The sample is crushed to at least minus 25 mm (1 in.) top sievesize and divided into analytical portions of at least 500 g each.Determination of total gross moisture is calculated by summingthe results of the Drying Oven Met
13、hod and the results of thePreparation Procedure.5. Significance and Use5.1 Moisture adds mass to the coke and serves no usefulpurpose. A knowledge of the moisture content is important inthe purchase and sale of green petroleum coke, both of whichare conducted on a dry basis.1This test method is unde
14、r the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.Current edition approved Oct. 1, 2017. Published November 2017. Originallyapproved in 1989. La
15、st previous edition approved in 2011 as D4931 06 (2011).DOI: 10.1520/D4931-06R17.2For 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
16、 onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
17、Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15.2 The collection of the sample as specified for the DryingOven Method is intended for the express purpose of determin-ing the total moisture of gre
18、en petroleum coke. The standard isavailable to producers, sellers, and consumers for determina-tion when other techniques or modifications are not mutuallyagreed on.5.3 The Preparation Procedure is used only when samplecontains free water. Obtaining a representative sample of acoke source is compoun
19、ded by the presence of free water.6. Apparatus6.1 Ovens:6.1.1 Air Drying OvenAdevice for passing slightly heatedair over the sample. The oven shall be capable of maintaininga temperature of 10 C to 15 C (18 F to 27 F) above ambientwith a maximum oven temperature of 40 C (104 F) unlessambient tempera
20、ture is above 40 C (104 F), in which caseambient temperature shall be used. Air changes are to be at therate of 1 to 4/min. A typical oven is shown in Fig. 1.6.1.2 Drying Oven (for residual moisture on minus 25 mm(1.0 in.) samples sieve USAstandardforced-air type). It shallbe capable of maintaining
21、a temperature of 105 C 6 5 C andso constructed that fresh air is introduced to all parts of theoven to ensure the removal of moisture-laden air.Air flow shallbe maintained at sufficiently low velocity to prevent loss of fineparticles, (for example, one exchange per minute).6.2 Drying Pans:6.2.1 Pans
22、 for the gross moisture sample (PreparationProcedure) shall be noncorroding, mass-stable at temperatureused, and large enough so that the sample can be spread to adepth of not more than twice the diameter of the largestparticles, or not more than 25 mm (1.0 in.) depth for smallercoke. The pan sides
23、shall be 50 mm to 75 mm (2 in. to 3 in.)high.6.2.2 Pans for crushed and divided sample shall benoncorroding, mass-stable at temperature used, and largeenough so that the sample can be spread to depth of not morethan 50 mm (2 in.). The sides shall be not more than 75 mm(3 in.) high.6.3 Balances:6.3.1
24、 Balance (Gross Sample)A balance with a minimumcapacity of 10 kg and sensitive to 1 g.6.3.2 Balance (Crushed Sample)A balance with a mini-mum capacity of 4 or sufficient to weigh the pan, sample, andcontainer and sensitive to 0.1 g.6.4 Laboratory Sample ContainersNoncorroding canswith airtight, fric
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
最后一页预览完了!喜欢就下载吧,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTM D4931-062017 Standard Test Method for Gross Moisture in Green Petroleum Coke D4931 06 2017
![提示](http://www.mydoc123.com/images/bang_tan.gif)
链接地址:http://www.mydoc123.com/p-363005.html