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1. (WO2018204060) HEAT TRANSFER TUBE FOR HYDROCARBON PROCESSING

Pub. No.:    WO/2018/204060    International Application No.:    PCT/US2018/027778
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue Apr 17 01:59:59 CEST 2018
IPC: C10G 9/16
C10G 9/20
C10G 75/00
F28F 1/40
B01J 19/00
B01J 19/24
Applicants: EXXONMOBIL CHEMICAL PATENTS INC.
Inventors: SPICER, David, B.
KRISHNAMOORTHI, Bharath
Title: HEAT TRANSFER TUBE FOR HYDROCARBON PROCESSING
Abstract:
The present disclosure relates to a heat transfer tube including inner and outer surfaces; and first and second mixing elements arranged in a helical row located on the inner surface of the tube and projecting inwardly toward a central longitudinal axis of the tube. Adjacent mixing elements are separated by a gap arc distance of about 0.5 inches (1.27 cm) or greater. The helical row has an angle (Θ) of from about 15 degrees to about 85 degrees relative to the central longitudinal axis of the tube. The tube has an inner diameter of about 1.85 inches (4.7 cm) or less.