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BENZENE TOLUENE XYLENE NA-RAFFINATE Raw-C5 CYCLO-PENTANE C9+

BENZENE

Benzene can be produced together with ethylene, propylene, etc. during naphtha cracking in the ethylene plant(NCC), or through extraction together with toluene and xylene, etc. from reformate naphtha, or produced from toluene by dealkylation process. It is a typical aromatic hydrocarbon product, which is an odorous liquid.

CAS number : 71-43-2 / Molecular formula : C6H6

Properties / Specifications DownloadMSDS Download
Plant processes

This plant uses pyrolysis gasoline (PG) as feedstock, and sulfolane, the hydrogenated and extractant, to selectively fractionate aromatic raffinate, and then high-purity benzene, toluene and xylene.

  • Gasoline Hydrogenation Unit
    To produce high-purity products, this unit hydrogenates the double-bond compounds in the high-purity feedstock to make saturated compounds, and removes sulfur compounds and turn them into feedstock suitable for the extraction unit.
    It sends the hydrogenated HEART CUT mixed C6~C8 to the extraction unit, and Raw-C5 is used as feedstock for the C5 plant, whereas C9+ is used as feedstock for the hydrodealkylation unit (HDA).
  • Extraction Unit
    This unit selectively extracts aromatic compounds, among the C6~C8 mixture(HEART CUT), that dissolve well in sulfolane, an extractant. The extracted aromatic compounds are sent to the fractionation unit.
  • Fractionation Unit
    This unit uses the difference in boiling points of aromatic mixture coming from the extraction unit and hydrodealkylation unit to produce high-purity benzene, toluene and xylene.
  • Hydrodealkylation Unit
    This unit turns the C9+ mixture fractionated in the hydrogenation unit into aromatic mixture containing lots of benzene through hydrocracking and hydrodealkylation. This aromatic mixture containing a lot of benzene is sent to the fractionation unit.
Product uses

Benzene is produced at the aromatic plant and utilized as the raw material of styrene monomer (SM), Caprolactam, etc.

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BENZENE 이성국 부장 82-2-6050-2415 Fax.Mail inquiry
Properties
BENZENE
BENZENE Specifications List
Test Item Unit Test Method Specification
APPEARANCE VISUAL *
Sp.Gr.(60/60℉) ASTM D 4052 0.8820 ~ 0.8860
APHA COLOR(Pt-Co) ASTM D 1209 MAX 20
DISTILLATION RANGE
(at 760mmHg)		 ℃ ASTM D 850 MAX1
(INCLUDING 80.1℃)
SOLIDFICATION POINT ℃ ASTM D 852 MIN 4.85
ACID WASH COLOR ASTM D 848 MAX PASS WITH2
ACIDITY mgNaOH/100mL ASTM D 847 NONE DETECTED
T-SULFUR Wt-ppm ASTM D 7183 MAX 1
THIOPHENE Wt-ppm ASTM D 7011 MAX 1
COPPER CORROSION ASTM D 849 PASS
BENZENE Wt-% ASTM D 7504 RECORD
NON AROMATIC Wt-% ASTM D 7504 MAX 0.15
HIGH PURITY BENZEGEN
HIGH PURITY BENZEGEN Specifications List
Test Item Unit Test Method Specification
APPEARANCE VISUAL *
Sp.Gr. (60/60℉) ASTM D 4052 0.8820 ~ 0.8860
APHA COLOR(Pt-Co) ASTM D 1209 MAX 10
DISTILLATION RANGE
(at 760mmHg)		 ℃ ASTM D 850 MAX 1
(INCLUDING 80.1℃)
SOLIDFICATION POINT ℃ ASTM D 852 MIN 5.4
ACID WASH COLOR ASTM D 848 MAX PASS WITH 1
BROMINE INDEX ASTM D 1492 MAX 10
WATER Wt-ppm ASTM D 1744 MAX 400
CHLORIDE Wt-ppm ASTM D 7359 MAX 0.1
THIOPHENE Wt-ppm ASTM D 7011 MAX 1
T-SULFUR Wt-ppm ASTM D 7183 MAX 1
T-NITROGEN Wt-ppm ASTM D 4629 MAX 1
COPPER CORROSION ASTM D 849 PASS
BENZENE Wt-% ASTM D 7504 MAX 99.9
NON AROMATIC Wt-ppm ASTM D 7504 MAX 500

* The above specifications represent standards may differ from the actual subject matter.