Detailed Hydrocarbon Analysis
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Detailed Hydrocarbon Analysis of the primary petrol, refinery compounds and final products. 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, installations, catalytic reforming installations and

Water and Sulphur determination in petroleum products


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And also other standard and installations, catalytic reforming installations 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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The gas chromatograph equipped with Flame-ionisation detector which has detection limit less than 210-12 gC/s and oven programming capability from 35 to 300 C with rate 5 C/min

  • Detailed Hydrocarbon Analysis is made usingAutomotive Petrol Analyser

+ UNICHROM-DHA


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The gas chromatographic capillary column with stationary liquid phase of polymdimethylsyloxane, length 50 meters, diameter 0.32 mm and film thickness 0,52 m

+

Capillary column connection interface with capability of splitting carrier flow into rate 1 : 100 and detector makeup gas

The most important parts of Automotive Petrol Analyser


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And as result liquid phase of polymdimethylsyloxane, length 50 meters, diameter 0.32 mm and film thickness

300 identified components

and the same quantity of unknowns


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Software module of UNICHROM system liquid phase of polymdimethylsyloxane, length 50 meters, diameter 0.32 mm and film thickness«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 taking in account detector response factors

LESS THAN± 3.6 %


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Using components content taking in account detector response factorsthe 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 determination of petrol components and the basic petrol parametersUNICHROM 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.

www.unichrom.com


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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).

www.unichrom.com


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Here is petroleum analysis report with detailed hydrocarbon analysis data and distillation curve was generated using DHA data.

www.unichrom.com


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The typical chromatogram of gasoline analysis data and distillation curve was generated using

www.unichrom.com


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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

www.unichrom.com


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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

www.unichrom.com


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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.

www.unichrom.com


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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

www.unichrom.com


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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

www.unichrom.com


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Temperature of distillation, °C calculated from GC analysis and measured by the standardised method in accordance with ASTM 2889 and GOST 1756

Distillation %

FC (Fractional Content) diagram of gasoline calculated from DHA data.

www.unichrom.com


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The individual and border compounds of 31 chromatographic groups.Group 1 to 15.

www.unichrom.com


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The individual and border compounds of 31 chromatographic groups.Group 16 to 31.

www.unichrom.com


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