Release Conditions Leading to Aerosol Formation in HF Alkylation

This paper examines typical release conditions leading to aerosol formation in existing HF alkylation technology. The variables affecting aerosol formation in the mechanical and thermal breakup regimes are identified. The properties of these key variables are altered chemically using an additive to reduce aerosol formation for the entire operation envelop without degradation of alkylation efficiency.

Small and large scale tests were conducted to experimentally verify the benefits of the additive in both the mechanical and thermal breakup regimes. This paper summarizes the findings of these experiments and presents a detailed method for estimating the release, droplet formation and dynamics and dispersion behavior of chemically reacting systems. This method is validated using the small and large scale data and is used to perform sensitivity analysis to assess the impact of storage temperature, pressure, composition, atmospheric and site conditions on aerosol and toxic hazard zone reduction.

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