Lummus Technology Inc.

Abb Lummus Global Inc.

Frank McCarthy

Erwin M J Platvoet

Robert J Gartside

Kandasamy Sundaram

Stephen J Stanley

Paul John Chapman

Stephen De Haan

John V Albano

Peter Robert Ponzi

Charles E Nagy

Marijn Kamphuijs

J Paul Fell

Barbara Stancato

Baozhong Zhao

Thomas W Gronauer

Brian K Sullivan

Jose De Barros

A process including preheating a hydrocarbon feed in a first preheat zone of a convection section, recovering a preheated hydrocarbon stream; heating the preheated hydrocarbon stream in a secondary transferline exchanger, recovering a heated hydrocarbon stream; feeding the heated hydrocarbon stream to a second preheat zone of the convection section to vaporize a portion of heated hydrocarbon stream, recovering a cracking feedstream; cracking hydrocarbons in the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product; and cooling the cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream.

Low CO2 emission and hydrogen import cracking heaters for olefin production

Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of coke in the radiant coils. Air flow rates, steam flow rates and coil outlet temperatures are controlled during the decoking process to prevent tube damage, minimize decoking time and maximize coke removal.

Ethylene furnace radiant coil decoking method

A pyrolysis heater particularly for the cracking of hydrocarbons in the production of olefins has a burner arrangement in the firebox which includes staged combustion low NOhearth burners firing upwardly in the firebox adjacent to the walls. Wall stabilizing gas fuel injection tips, located at an elevation above the hearth burners, inject fuel upwardly between the walls and the flame from the hearth burners. This prevents rollover of the flame onto the process heater coil and overheating of the coil.

Pyrolysis heater

A cracking furnace for the pyrolysis heating of an organic feedstock includes a heating section and at least one convection section. In one embodiment the furnace includes first and second convection sections positioned along opposite sides of the heating section. The openings for admitting flue gas to the convection sections can be at the top or the bottom of the heating section. In another embodiment the furnace includes a plurality of passageways for the communication of flue gas from the heating section to the convection section. The passageways can be positioned at the top or the bottom of the heating section. The passageways provide a more even flow of flue gas through the heating section by preventing recirculation of the flue gas within the heating chamber.

Cracking furnace with more uniform heating

Growing community of inventors

Wayne, NJ, United States of America

Frank McCarthy