Detailed%20Hydrocarbon%20Analysis%20of%20the%20primary%20petrol,%20refinery%20compounds%20and%20final%20products

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• Detailed Hydrocarbon Analysis of the primary
  petrol, refinery compounds and final products

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Precise purity determination for benzene,
toluene, xylene and another petrochemical products
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Quality Control for primary petroleum processing
installations, catalytic reforming installations
and other processing objects
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Refinery Gas Analysis, Water and Sulphur
determination in petroleum products
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And also other standard and custom analytical
measurements using UNICHROM system
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Simple implementation of analytical measurements
according to GOST, ASTM and other certificate
documentation in automatic mode!
And also The Detailed Hydrocarbon Analysis
ofAUTOMOTIVE PETROLS
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• Detailed Hydrocarbon Analysis is made
  usingAutomotive Petrol Analyser

UNICHROM-DHA
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The most important parts of Automotive Petrol
Analyser
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And as result
300 identified components and the same quantity
of unknowns
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Software module of UNICHROM system DHA.DLL is
automatically identifies known and unknown
components
Using of special algorithms for interpolation of
physical and chemical substance properties to
unknown components allows to complement our
knowledge about petroleum sample being analysed
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We made calculations using internal normalisation
method taking in account detector response factors
So we have gotVOLUME, MASS and MOLAR content of
ALL individual hydrocarbons
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Relative error of concentration determination
LESS THAN 3.6
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Using components contentthe UNICHROM DHA module
calculates the following parameters of lead-free
automotive petrol

• Fractional contents
• Saturated vapour pressure
• Motor octane number
• Research octane number
• Density

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The automatic gas chromatographic system for
detailed determination of petrol components and
the basic petrol parameters
www.unichrom.com
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The automatic gas chromatographic system
UNICHROM for the detailed hydrocarbon analysis
(DHA) of various petroleum fractions and products
has been developed. Samples of gasoline are
analysed by temperature programmed gas
chromatograph on a high-resolution capillary
column which separates hydrocarbons in order of
their boiling points. Individual components are
identified comparing their Kovats or linear
retention indices with a library of 330
components. Then all the major gasoline
standardised specifications are calculated from
the obtained DHA data.
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As the result of single chromatographic petrol
sample analysis (about 70 min) it is possible to
determine such characteristics - Detailed
hydrocarbon and fractions contents (conforms ASTM
D5134, GOST 6994 and ASTM D5580, GOST 8997 and
GOST 2070), - Contents of aromatic components
(conforms GOST 6994 and ASTM 5580), - Contents
of olefin components (conforms GOST 8997 and
2070), - Fractional content (conforms GOST 2177
and ASTM D86), - Detonation stability expressed
in terms of research octane number RON
(conforms GOST 8226 and ASTM 2699), - Detonation
stability expressed in terms of motor octane
number MON (conforms GOST 511 and ASTM 2700), -
Saturated vapour pressure (conforms GOST 1756-52
and ASTM 2889), - Density (conforms GOST 3900 and
ASTM 4052). The high reproducibility and the
reliability of developed system UNICHROM in the
Central Laboratory of the Mozyr Oil Refinery
(Belarus) and in The State Criminal Centre of the
Home Office of Belarus has been achieved. The
method is certified at The State Metrology
Committee of Belarus (No. MVI.MN 998-99).
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Here is petroleum analysis report with detailed
hydrocarbon analysis data and distillation curve
was generated using DHA data.
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The typical chromatogram of gasoline
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Comparison of D (Density) values calculated from
GC analysis and measured by the standardised
method in accordance with ASTM 4052 and GOST 3900
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Comparison of FC (Fractional Content) values
calculated from GC analysis and measured by the
standardised method in accordance with ASTM D86
and GOST 2177
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Comparison of MON (Motor Octane Number) values
calculated from GC analysis and measured by the
standardised engine method in accordance with
ASTM D2700 and GOST 511.
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Comparison of RON (Research Octane Number) values
calculated from GC analysis and measured by the
standardised engine method in accordance with
ASTM D2699 and GOST 8226
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Comparison of SVP (Saturated Vapour Pressure)
values calculated from GC analysis and measured
by the standardised method in accordance with
ASTM 2889 and GOST 1756
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Temperature of distillation, C
Distillation
FC (Fractional Content) diagram of gasoline
calculated from DHA data.
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The individual and border compounds of 31
chromatographic groups.Group 1 to 15.
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The individual and border compounds of 31
chromatographic groups.Group 16 to 31.
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