Intro to Products

TOLUENE

Toluene can be produced together with ethylene, propylene, etc. during naphtha cracking in ethylene plant(NCC) or through extraction together with benzene and xylene, etc. from Reformate Naphtha. Like benzene, it is an aromatic hydrocarbon product, which is an odorous liquid.

CAS number : 108-88-3 / Molecular formula : C7H8

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

Utilized as the raw material for paint, rubber, additive, and chemical solvents, etc.

  • Paints
Product inquiry
Product inquiry List
Product Speciality Contact person Phone number Inquiry
TOLUENE Lee Hun-su 82-2-6370-5421 Mail inquiry
Properties
TOLUENE
Specifications List
Test Item Unit Test Method Specification
APPEARANCE - VISUAL *
Sp. Gr. (60/60℉) - ASTM D 4052 0.8690 ~ 0.8730
APHA COLOR(Pt-Co) - ASTM D 1209 MAX 20
DISTIILATION RANGE
(at 760mmHg)
ASTM D 850 MAX 1
(INCLUDING 110.6℃)
ACID WASH COLOR - ASTM D 848 MAX PASS WITH 2
ACIDITY mgNaOH/100m ASTM D 847 NONE DETECTED
T-SULFUR Wt-ppm ASTM 7183 MAX 8
COPPER CORROSION - ASTM D 849 PASS
WATER Wt-ppm ASTM D 1744 RECORD
BENZENE Wt-% ASTM D 7504 RECORD
TOLUENE Wt-% ASTM D 7504 RECORD
NON AROMATIC Wt-% ASTM D 7504 MAX 1.37
HIGH PURITY TOLUENE
Properties List
Test Item Unit Test Method Specification
APPEARANCE - VISUAL *
APHA COLOR(Pt-Co) - ASTM D 1209 MAX 20
ACID WASH COLOR - ASTM D 848 MAX PASS WITH 2
TOLUENE Wt-% ASTM D 7504 MIN 99.8
OTHER AROMATICS
& NON AROMATICS
Wt-ppm ASTM D 7504 MAX 2,000
NON AROMATICS Wt-ppm ASTM D 7504 MAX 1,800
WATER Wt-% ASTM D 1364 MAX 0.02
T-SULFUR Wt-ppm ASTM D 7183 MAX 8
RESIDUE ON EVAPORATION Wt-ppm ASTM D 268 MAX 50

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