Pharmaceutical Drug Coating Case History

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A company providing contract development and manufacturing of oral, topical, sterile and inhaled drug delivery products to pharmaceutical and biotechnology companies all around the world uses a solvent spraying process in a fluid bed dryer. The process sprays a combination of solvents including Isopropyl Alcohol, Acetone, Ethanol and Methanol on to the drug. The solvent laden air is then exhausted from the fluid bed dryer, collected and directed to a catalytic thermal oxidizer for destruction.

The Challenge

The Company wanted to monitor the flammability of the fluid bed dryer exhaust stream going into the catalytic thermal oxidizer. Danger is present when the inlet stream to the oxidizer suddenly gets rich enough to ignite or explode. To prevent this from happening they wanted the analyzer to alarm if the %LFL rose above 25. They also wanted the analyzer to be FM approved for Class 1 Div 2 hazardous environments.

The Company chose to install Control Instruments’ PrevEx Flammability Analyzers to meet their LFL monitoring needs. 

Read the entire case history.

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