ASTM D5154-03
(Test Method)Standard Test Method for Determining Activity and Selectivity of Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test
Standard Test Method for Determining Activity and Selectivity of Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test
SCOPE
1.1 This test method covers determining the activity and selectivity of either equilibrium or laboratory deactivated fluid catalytic cracking (FCC) catalysts. The activity is evaluated on the basis of weight percent conversion of gas oil in a microactivity unit. The selectivities are evaluated on the basis of weight percent yields of specifically defined products resulting from the catalytic cracking of gas oil.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5154–03
Standard Test Method for
Determining Activity and Selectivity of Fluid Catalytic
1
Cracking (FCC) Catalysts by Microactivity Test
This standard is issued under the fixed designation D 5154; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 activity—calculated as conversion divided by the
difference of 100 minus conversion.
1.1 This test method covers determining the activity and
3.1.2 ASTM reference catalysts—a set of equilibrium FCC
selectivity of either equilibrium or laboratory deactivated fluid
catalysts within the useful range of this test method is used to
catalytic cracking (FCC) catalysts. The activity is evaluated on
improve the reproducibility of test results between different
the basis of weight percent conversion of gas oil in a
laboratories. Each catalyst has a consensus mean conversion
microactivity unit. The selectivities are evaluated on the basis
value assigned to it by Committee D32. Samples of theASTM
of weight percent yields of specifically defined products
reference catalysts can be obtained through NIST.
resulting from the catalytic cracking of gas oil.
3.1.3 ASTMstandardfeed—aspecificbatchofgasoilthatis
1.2 The values stated in SI units are to be regarded as
3
used as feedstock in the described test method.
standard. The values given in parentheses are provided for
3.1.4 catalyst/oil(C/O)ratio—theweightofcatalystusedin
information only.
the test divided by the weight of feed fed to the reactor. In
1.3 This standard does not purport to address all of the
practice, the weight of catalyst is usually maintained at a
safety concerns, if any, associated with its use. It is the
constant value and the total weight of feed is varied.
responsibility of the user of this standard to establish appro-
3.1.5 contacttime—calculatedas3600/(WHSV·C/O).This
priate safety and health practices and determine the applica-
is the delivery time, in seconds, during which feed is intro-
bility of regulatory limitations prior to use.
duced to the reactor.
2. Referenced Documents 3.1.6 HCO—the heavy cycle oil product defined to have a
2
minimum boiling point of 343°C (650°F).
2.1 ASTM Standards:
3.1.7 LCO—the light cycle oil product defined to have a
D 2887 Test Method for Boiling Range Distribution of
boiling point range of 216 to 343°C (421 to 650°F).
Petroleum Fractions by Gas Chromatography
3.1.8 measured conversion—calculated as the difference
D 3907 Test Method for Testing Fluid Catalytic Cracking
betweentheweightoffeedusedandtheweightofunconverted
(FCC) Catalysts by Microactivity Test
material divided by the weight of feed used times 100 %. The
D 4463 Guide for Metals Free Steam Deactivation of Fresh
unconverted material is defined as all liquid product with a
Fluid Catalytic Cracking Catalysts
boiling point above 216°C (42°F).
E 105 Practice for Probability Sampling of Materials
3.1.9 normalized product yield—the result obtained when
E 177 Practice for Use of the Terms Precision and Bias in
each product yield has been corrected for non-perfect weight
ASTM Test Methods
balances. For a run to be judged acceptable, the total recovery,
E 456 Terminology Relating to Quality and Statistics
wt % of feed, should be in the range of 96 to 101 % prior to
E 691 Practice for Conducting an Interlaboratory Study to
normalization. If the recovery is outside this range the test data
Determine the Precision of a Test Method
should be discarded.
3. Terminology
3.1.10 product yield—one hundred times the weight of a
specific product divided by the weight of feed used in the test.
3.1 Definitions of Terms Specific to This Standard:
3.1.11 reactionseverity—anindicationoftheseverityofthe
cracking reaction which allows a range of conversions to be
1
This test method is under the jurisdiction of ASTM Committee D32 on
obtained from any particular catalyst without changing reactor
Catalysts and is the direct responsibility of Subcommittee D32.04 on Catalytic
temperature. Changing reaction severity is achieved by chang-
Properties.
Current edition approved Oct. 1, 2003. Published October 2003. Originally
ing WHSV or C/O ratio or both.
approved in 1991. Discontinued in 2000 and reinstated as D 5154–03. Last previous
edition approved as D 5154–99.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from National Institute of Standards and Technology (NIST), 100
the ASTM website. Bureau Dr., Stop 3460, Gaithersburg, MD 2
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.