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MTBE BUTENE-1 ISOBUTENE

ISOBUTENE

In order to produce high purity isobutene, isobutene, which is contained in C4 Raffinate-1, is reacted with methanol to make MTBE and decomposed and reacted again to produce isobutene.

It is a colorless gas at ambient temperature and atmospheric pressure.

CAS number : 75-28-5 / Molecular formula : C4H8

Properties / Specifications Download MSDS Download
Plant processes

This unit consists of the reaction unit that selectively lets the Isobutene, contained in C4 Raffinate-1, react with methanol using a catalyst (etherification) to produce MTBE, and the refining unit that fractionates unresponsive C4 Raffinate-1 and high-purity MTBE.

  • MTBE Synthesis Unit
    This unit consists of the reaction process that selectively lets the isobutene, contained in C4 Raffinate-1, react with methanol using a catalyst (etherification) to produce MTBE, and the refining unit that fractionates unresponsive C4 Raffinate-1 and high-purity MTBE.
  • Isobutene Manufacturing Unit
    This unit fractionates methanol by cracking the MTBE, produced by catalyst process of the MTBE synthesis unit, and recovers high-purity isobutene.
  • Butene-1 Recovery Unit
    Among the residual C4 Raffinate-2, produced by the MTBE synthesis unit, this unit selectively hydrogenates BD, VA, PD and EA, fractionating high-purity butene-1 in the refining system.
Product uses

Isobutane is utilized as a polymer process dilution and charging gas.

  • Raw material for IIR (tire) and MMA
Product inquiry
Product inquiry List
Product Speciality Contact person Phone number Inquiry
ISOBUTENE Park Sun-chang 82-2-6370-5412 Mail inquiry
Properties
ISOBUTENE
Specifications List
Test Item Unit Test Method Specification
C3’S Wt - ppm ASTM D 2163 MIN 10
ISOBUTANE Wt - % ASTM D 2163 MAX 99.9
BUTANES Wt - ppm ASTM D 2163 MAX 500
BUTENES Wt - ppm ASTM D 2163 MAX 500
BUTADIENE Wt - ppm ASTM D 2163 MAX 200
MTBE Wt - ppm ASTM D 4815 MAX 5
DIMETHYL ETHER Wt - ppm ASTM D 4815 MAX 5
METHANOL Wt - ppm ASTM D 4815 MAX 10
T-SULFUR Wt - ppm ASTM D 6667 MAX 5
WATER Wt - ppm ASTM D 1744 MAX 20

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