Light Cycle Oil (LCO) Quench​ Nozzles

Custom Solutions Bulletin 066
Application #020552
Industry: Petrochemical Processing
Application: Light Cycle Oil (LCO) Quench
Product Description: Special MaxiPass Lance


A customer came to BETE looking for a nozzle that would spray light cycle oil (LCO) and steam to quench a hydrocarbon gas stream entering an FCC riser. The purpose of the steam was to achieve finer atomization than would be achieved with LCO only.


The material of choice for the MaxiPass 656N was AMS-5387 (cobalt alloy 6) because of the erosive nature of the stream into which it was spraying. In this case the nozzle was to be welded to a 304H stainless steel lance. The nozzle was to be fed with a 1-1/2 inch 300# ANSI flange. Because the lance needed to meet x-ray weld standards, the inlet flange had to be a weld neck style flange. BETE welders used their years of experience to perform the challenge of the 304H to cobalt alloy 6 weld, the feed flange to pipe weld, and the mounting flange weld. The mounting flange was a 6 inch raised face flange to mate with the existing stub end already on the riser. The MaxiPass nozzle is an ideal choice for LCO-steam (two-phase) applications because of its internal S-shaped vane that not only ensures a homogeneous LCO-steam mixture, but an even distribution of the mixture as well. The BETE MaxiPass series is a proven performer in LCO-steam applications.

To discuss your fluid-related challenge, please contact BETE Applications Engineering at 413-772-0846 or​