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Online gas analysis services

Online Analysis of Polymer Plant Reactorgas

Intertek provides process analytical technology (PAT) services, including online analysis and monitoring of reactor gasses to a wide range of industries.

Case Introduction

The reactor gas of a polymerization plant is monitored on-line for process-control. The reactor-gas is heavily contaminated with dust and contains traces of active catalyst. Whereas the dust blocks the flow in the sample conditioning system for the on-line analysis system, the active catalyst has a pyrofore character.

Challenges

Maintaining a constant gas-flow to the process analyzer
.Finding a way to avoid spontaneouos fire when opening the sample conditioning system for maintenance (e.g. filter replacement and/or cleaning).
The heavy dust load of the sample
Presence of traces of, still active, catalyst which has a pyrofore character
Spontaneous fii a zone 2 environment should be avoided at all cost.

Intertek Solution

A sample preconditioning system is used to remove most of the dust.

Only the relatively low flow to the process analyzer is filtered, while the fast loop flow is used for self-cleaning of the filter.Deactivating the active catalyst is established with a special filter.

Additionally, before opening the sample conditioning system, this filter is flushed with nitrogen whichis saturated with water.

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