Stone & Webster Process Technology, Inc.

Stone & Webster Technology, Inc.

John Brewer

David J Brown

David Brown

Martyn D Roberts

Chinh T Dang

Peter H Br&uuml;cher

Svend Rumbold

J Parks Craig

A process for independently and concurrently cracking at least two different hydrocarbon feedstocks to olefins. The process is carried out in a furnace for cracking hydrocarbon feed which has at least a first and second independent radiant cracking zone to produce a first cracked product and second cracked product that are separately withdrawn from the furnace.

Hydrocarbon cracking in a multi-zone cracking furnace

Systems and apparatuses for stabilizing the movement of the reactor furnace tubes of a fired heater, furnace, heat exchanger or other device utilizing reactor furnace tubes to thereby reduce harmful stresses on the tubes, extend the useful life of the tubes, increase the efficiency and safety of reaction processes and allow for the streamlining the design of the tubes.

Systems and apparatuses for stabilizing reactor furnace tubes

The present invention provides a furnace and process that relies on a multiplicity of radiant heating tubes, each in the form of a U-shaped coil, that are mounted within a furnace firebox such that an inlet leg of any one of the plural tubes is immediately adjacent and spaced apart from an outlet leg of another one of the plural tubes within the firebox of a thermal cracking furnace. This spacial pairing of an inlet leg of one tube with an outlet leg of another tube of the plural radiant heating tubes of the cracking furnace maximizes utilization of the available radiant heat within the firebox of a thermal cracking furnace while reducing the likelihood of localized hot spotting that could produce coke-tar plugging of a tube.

Cracking furance having radiant heating tubes the inlet and outlet legs of which are paired within the firebox

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Katy, TX, United States of America

John Brewer