Press release

INVISTA and Koch-Glitsch Expand Partnership to Offer Innovative ExoS™ Technology to Achieve 10 ppm Sulfur Limit in Gasoline Blendstock While Minimizing Octane Loss

Sponsored by Businesswire

INVISTA Performance Technologies (IPT) and Koch-Glitsch, affiliates of
Koch Industries Inc., announced today an expansion of their partnership
to offer the proprietary ExoS™ technology to customers. The technology
allows refineries to generate an olefin rich C6/C7 raffinate with less
than 10 ppm sulfur that bypasses the FCC naphtha hydrotreater for direct

This press release features multimedia. View the full release here:

The ExoS process extracts sulfur, preserves octane, and generates value (Photo: Business Wire)

The ExoS process extracts sulfur, preserves octane, and generates value (Photo: Business Wire)

With eight units in commercial operation and seven units in the design
and construction phase, the technology is commercially proven to deliver
value by preserving octane and reducing hydrotreater size, operating
expenditures, and capital expenditures when installed with a new
hydrotreater. As a revamp, the technology preserves octane number,
lowers operating expenditures, and frees up hydrotreater capacity and
hydrogen availability.

The ExoS™ process technology – developed and commercialized by China
University of Petroleum-Beijing (CUPB) and Hebei Refining Technologies
(HRT) – utilizes a proprietary solvent to extract sulfur and aromatics
from mid-cut FCC naphtha (C6/C7). The sulfur-rich extract is sent to the
FCC hydrotreater for sulfur removal while the olefin rich raffinate with
less than 10 ppm sulfur is sent directly to the blending pool. This
reduces the hydraulic load on the hydrotreater and avoids the saturation
of the high-octane number olefins. Alternatively, this low-sulfur,
olefin-rich, mid-cut FCC naphtha can also be utilized as feed for other
processes to further increase its value.

“Refineries worldwide are facing the challenge of ever decreasing total
sulfur limits in the gasoline pool,” said Christoph Ender, Koch-Glitsch
senior vice president of global sales and business development.
“Expanding our partnership with INVISTA Performance Technologies to
offer ExoS will provide our customers with a valuable solution that is
easier to operate, lower in cost, and more environmentally friendly to
stay ahead of the sulfur curve versus hydrotreating alone.”

Approximately 40 wt% of the olefins in full range naphtha are in the
mid-cut (C6/C7) and approximately 90 wt% of the sulfur species are
thiophenic. The ExoS™ solvent is formulated to extract the thiophenic
sulfur from the mid-cut naphtha for further processing in the
hydrotreater. The process utilizes a series of extraction and
distillation columns optimized to recover more than 90% of the olefins
in the raffinate and more than 95% of the sulfur in the extract.

“We are excited to add the ExoS technology to our expanding refinery
portfolio,” said Mike Massa, INVISTA Performance Technology Licensing
Director. “The refining industry no longer has to accept significant
octane loss to meet mandatory sulfur limits. The ExoS process provides
an option to preserve octane, and optimize the hydrotreater design and

To learn more about the ExoS™ technology and to see how the technology
can generate value for your refinery in your facilities, you can contact
IPT at,
contact a local Koch-Glitsch representative, or email

About INVISTA Performance Technologies

INVISTA Performance Technologies (IPT) is the technology licensing group
within INVISTA. IPT provides the resources and know-how to deliver
world-scale technology for licensing to a growing portfolio of
technologies in the polyester, polyurethane, nylon and refining value
chains. Plant process design and project execution skills have been
married with expert functional engineering and production know-how to
provide unparalleled expertise in technology licensing.

About Koch-Glitsch

Koch-Glitsch is a global leader in developing, engineering, designing,
and manufacturing a complete line of mass transfer and separations
technology equipment for the chemical, petrochemical, refining, and gas
processing industries. Koch-Glitsch can provide a complete solution for
each unique project with its wide range of products and service
capabilities, in addition to its knowledgeable and experienced Refinery
Specialist, Troubleshooting, and CFD Modeling teams. These solutions
allow for designs that are faster and safer for new constructions and
revamps. Koch-Glitsch is headquartered in Wichita, Kansas, with
additional sales and manufacturing locations across the globe.
Koch-Glitsch is a Koch Engineered Solutions company. More information is
available at

About China University of Petroleum-Beijing

CUPB is a leading Chinese university in the refining, petrochemical
space. State Key Laboratory of Heavy Oil Processing of CUPB is a leading
R&D facility in oil processing and clean fuel production. More
information is available at

About Hebei Refining Technologies

HRT is a technology-driven company dedicated to desulfurization
technology development, petrochemical agents and special equipment
manufacturing. HRT provides technologies and services in refinery gas,
fuel gas, LPG and naphtha desulfurization. More information is available

About Koch Engineered Solutions

KES provides uniquely engineered solutions in mass and heat transfer,
combustion and emissions controls, filtration, separation, materials
applications, automation and actuation. KES is located in Wichita,
Kansas, and is a subsidiary of Koch Industries, one of the largest
private companies in the world. KES delivers superior value in
developing, integrating, and applying innovative technical and service
solutions for industrial value chains. More information is available at