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Engineered to Innovate®

GTC Technology is a global licensor of process technologies and mass transfer solutions with the mission of creating value for our clients. Re� ning, petrochemical and chemical companies around the world rely on GTC’s advanced processes to optimize production capacity and e� ciency. With insightful industry expertise, research capabilities and innovative thinking, GTC solves complex processing problems and has earned a reputation of excellence in designing and delivering high-quality, strategic solutions for clients worldwide. We’re engineered to innovate.

Engineered to Innovate®

Isomalk-3SM

A Robust n-C4 Isomerization ProcessBased on a Modern Low-Temperature Non-Chlorinated Catalyst

Isomalk-3SM

Technology Licensing

Engineered to Innovate

A Robust n-C4 Isomerization ProcessIsomalk-3 is a low-temperature isomerization technology for processing n-butane into isobutane, its branched isomer. Isobutane is an important intermediate required for the production of isobutylene or alkylate. Isobutylene can be used to produce MTBE or other high value petrochemicals such as isoprene through a synthetic on-purpose route.

� e Isomalk-3 technology is based on the use of a mixed metal oxide SI-3TM catalyst with high selectivity to i-butane. Operating at 150-170°C, the yield and operating expenses are optimized. � e expected lifetime of the SI-3 catalyst is over 10 years. � e process eliminates the need for chlorine injection, o� -gas caustic scrubbing and associated equipment expenses. Water, sulfur and nitrogen specs for the feed are signi� cantly lowered. Break-through of these contaminants is permissible, and catalyst activity can be restored via “in-situ” catalyst regeneration. As with

the other catalysts associated with the Isomalk family, operation is simple and reliable; start-up, turn-around and shutdown time are minimal due to the high resistance to catalytic poisons and most importantly water.

Con� guration OverviewIsomalk-3 can achieve high conversion to isobutane while signi� cantly reducing equipment needs. � e process requires a one-reactor con� guration and eliminates the chemical consumption of organochlorides and caustic for operation. Cooling water or refrigerant serves as a medium to recover i-C4 and n-C4 in the stabilizer overhead, depending on the available utilities on-site. � e subsequent integration of the i-butane with downstream dehydrogenation technology allows the optimum recovery of all products of the isomerization reaction, heat integration, minimized OSBL requirements and plot-plan.

GTC Technology 1001 S. Dairy Ashford, Suite 500 Houston, Texas 77077 USA Main +1-281-597-4800 Toll Free +1-877-693-4222inquiry@gtctech.com | www.gtctech.com

Simpli� ed process scheme of Isomalk-3SM

Isomalk-3SM

C5+

i-C4

MixedC4’s Feed

Stabilized Isomerate

Heater

O�-Gas

H2 Gas

GTC Technology Engineered to Innovate

Advantages Isomalk-3 is the only available non-chlorinated process for n-C4 isomerization that is commercially successful. � e SI-3 catalyst provides a close approach to thermal equilibrium at low temperatures, and exhibits outstanding stability, simplicity and safety in operation. Features of Isomalk-3 include:

• Low operating costs

• Regenerable catalyst with superior tolerance to process impurities and water

• No chloride addition or caustic treatment needed; no wastes produced.

• Service life of SI-3TM catalyst 10+ years

Isomalk-3SM

C4 isomerization

Isomalk-2SM

C5-C6 isomerization

Isomalk-4SM

C7 isomerization

Reforming

For MTBE/Isoprene production

For Gasoline blending

ISOBUTANE

ISOMERATE

REFORMATE

ISOMERATE C7

For Gasoline blending

For Gasoline blending

IsomalkSM Family

GTC Technology 1001 S. Dairy Ashford, Suite 500 Houston, Texas 77077 USA Main +1-281-597-4800 Toll Free +1-877-693-4222inquiry@gtctech.com | www.gtctech.com

Engineered to Innovate

To learn more about GTC Technology’s leading-edge technology solutions and the many ways we can help improve your operations and pro� tability, call us today at +1-281-597-4800, e-mail us at inquiry@gtctech.com or visit our Web site at http://www.gtctech.com.

GTC’s Isomalk technologies for para� n isomerization