Chemical Engineering May 2023 - 49

Gulf Coast 2023 Special Advertising Section
A classic mixing tool for the petroleum industry
Ross LPD Static Mixers are rugged, reliable devices that combine excellent inline mixing
with minimal pressure loss
R
oss Low Pressure Drop (LPD) Static Mixers are used throughout
the oil and gas industry for turbulent-flow mixing applications.
These heavy-duty low-maintenance devices serve in continuous operations
where high performance and accuracy are required, such
as on-line water determination of crude oil; dosing of various additives
into gasoline; blending different kinds of fuel oils; gas-gas
blending; and pipeline reactions, among others.
Static mixers have no moving parts and the energy for mixing is
available in the form of pressure. Pressure loss - a natural consequence
of static mixing - sometimes becomes the deciding factor
in mixer selection. The LPD Static Mixer remains a classic choice for
many inline blending requirements due to its simple and durable
design capable of uniform mixing with little pressure loss. The mixer
elements consist of semi-elliptical plates carefully positioned in series
to split and rotate the product 90 deg. in alternating clockwise
and counterclockwise directions.
LPD mixers in diameters from 1 in. through 2.5 in. are welded to
Shown are removable LPD mixing elements supplied
with retainer ring and flanged housing.
a central rod, while larger elements are welded to four outside support
rods for maximum rigidity and stability. Units as large as 48 in.
diameter can be supplied as stand-alone mixer elements or as modules
complete with a mixer housing and injection ports.
Established in 1842, Ross is one of the oldest and largest mixing
equipment companies in the world. Ross mixing, blending, drying
and dispersion equipment is used throughout many industries in
the manufacture of foods, adhesives, electronics, coatings, cosmetics,
pharmaceuticals, plastics and composites.
www.staticmixers.com
Sulzer Chemtech successfully starts up world's largest
pygas-to-styrene extraction unit
S
ulzer Chemtech (GTC Technology) has completed the
start-up of the world's largest facility for styrene extraction
from pyrolysis gasoline (pygas) derived from naphtha
cracking. Located in Zhejiang Petroleum & Chemical Co.,
Ltd.'s (ZPC) integrated refining and petrochemical complex in
Zhoushan, China, the unit uses Sulzer Chemtech's proprietary
GT-Styrene® licensed technology to produce 100'000 tonnes
of styrene per year.
The new facility upgrades pygas, a by-product obtained
from three steam crackers in Zhoushan's plant, by extracting
valuable styrene for use in the petrochemical industry. The
process flexibility offered by GT-Styrene is enabling the plant
to obtain high-quality ASTM 2827 grade styrene from three
different units within a single train. This will help ZPC increase
the overall profitability of its integrated refining and petrochemical
complex.
ZPC selected Sulzer Chemtech due to its prior extensive
experience in styrene extraction and positive outcome of previous
collaborations. Sulzer Chemtech supported all stages
of the project, from delivering a licensed Basic Engineering
Package, to supplying proprietary equipment and chemicals, providing support during the detailed
engineering phase, and successfully completing commissioning and startup of the unit.
www.sulzer.com
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM MAY 2023
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http://www.staticmixers.com http://www.sulzer.com http://WWW.CHEMENGONLINE.COM

Chemical Engineering May 2023

Table of Contents for the Digital Edition of Chemical Engineering May 2023