Recovery of HF from hydrocarbon streams

Details Recovery of HF from hydrocarbon streams Recovery of HF from hydrocarbon streams

1992-11-06

1994-08-09

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Saturated compound synthesis

By condensation of a paraffin molecule with an olefin-acting...

585723, 585800, 585868, 502 22, C07C 260, C07C 262

Patent

active

053368320

ABSTRACT:
Refining processes for recovering HF from acid soluble oils (ASO) generated by the HF recovery unit of an HF alkylation unit are provided. ASO containing HF is removed from the HF recovery unit and contacted with water to form a system having two phases, an aqueous HF containing phase and an organic phase. After phase separation, the aqueous HF containing phase passes through a bed of fluidized NaF crystals, where the NaF reacts with the HF to form salts having the general formula NaF.nHF. Flow of the aqueous HF containing phase to the bed continues until exhaustion of the bed, as determined by the detection of HF in the effluent. After exhaustion of the bed, the process provides for the regeneration of the bed and release of anhydrous HF which is then returned to the HF alkylation unit.

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