WDG IV UOP RP ATEX version0 pages

ATEX II 3 G WDG-IV UOP/RP

THERMOX

®

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 remived 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 nitrogenoperated 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.

ATEX WDG-IV UOP/RP

Series 2000 Control Unit

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

www.ametekpi.com