WDG IV UOP0 pages

WDG-IV UOP/RP

THERMOX

®

PROCESS INSTRUMENTS
PROCESS INSTRUMENTS

oxygen analyzer for uop ccr platforming process

isolation valve option allows sensor replacement while the process is operating

The Process Defined

The UOP CCR Platforming1 process is widely
used in the petrochemical industries to convert
paraffins and naphthenes to aromatics with
little ring-opening or cracking. A key part of the
process is the continuous catalyst regeneration
(CCR) in which coke deposits are removed from
the catalyst by oxidation. The rate of oxidation
must be controlled to prevent thermal damage to
the catalyst, and this is achieved through careful
control of the oxygen level in the process.
t The WDG-IV UOP/RP is the latest in a
series of Thermox analyzers, which have
been specifically designed to monitor oxygen
content in CCR processes since 1980. It
uses a nitrogen-operated aspirator to
draw a sample of gas from the catalyst
regenerator. A portion of this gas passes
over the zirconia sensor. Because the
aspirator gas contains no oxygen, the
sample can simply be returned to the
regenerator.
t The dual isolation valve option allows
the sensor to be replaced without shutting
down the CCR process, allowing very high
availability to be maintained.
t The entire sample stream is heated
above the sample dew point, so there is
no risk of corrosion. For added protection,
an all-Hastelloy sample stream is available
as an option.

Benefits include
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High reliability

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Hastelloy probe tube

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316 SS Wetted parts (Hastelloy C optional)

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All Wetted parts heated

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Dual isolation valves (optional)

CCR Platforming is a registered trademark of Universal Oil
Products

1

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