Olmi twin-tube primary quench heat exchangers (PQEs) cool the hot gaseous effluents from hydrocarbon cracking furnaces while generating steam. These highly efficient linear transfer line heat exchangers minimize the difference in thermal expansion between the inner and outer tubes to prevent cracking and fatigue. The absence of a thermal sleeve, short residence time of hot gas in the distributor, and improved welding also increase ethylene yield.
Olmi two-tube primary cooling heat exchangers are highly efficient transfer line heat exchangers that reduce or eliminate the problems of erosion, corrosion and fouling commonly associated with primary cooling heat exchangers.