Process for cracking hydrocarbon stream using flue gas from gas turbine
AssigneeSabic Global Technologies B.V.
InventorJoris Van Willigenburg
Life of this patent
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Abstract
A process for cracking a hydrocarbon stream by: combusting fuel in a gas turbine in the presence of compressed air to produce a flue gas, wherein the flue gas drives a turbine to produce electricity in a coupled generator or work to power a coupled rotating equipment; (a) feeding a first portion of the flue gas to a heat exchanger; (b) feeding ambient air to the heat exchanger to be heated by the first portion of the flue gas to provide heated air; (c) feeding a furnace with fuel and a mixture of a second portion of the flue gas and the heated air obtained by step (c) and (d) cracking the hydrocarbon stream in the furnace.
Claims12
A process for cracking a hydrocarbon stream, said process comprising the following steps:
- (a) combusting fuel in a gas turbine in the presence of compressed air to produce a flue gas, wherein the flue gas drives a turbine to produce electricity in a coupled generator or work to power a coupled rotating equipment,
- (b) feeding a first portion of the flue gas to a heat exchanger,
- (c) feeding ambient air to the heat exchanger to be heated by the first portion of the flue gas to provide heated air,
- (d) feeding a radiant section of a furnace of a steam cracking unit with fuel and a mixture of a second portion of the flue gas and the heated air obtained by step (c), and
- (e) feeding a convective portion of the furnace of the steam cracking unit a hydrocarbon feed stream via convection coils in the convection section of the furnace in the steam cracker.
A system for steam cracking a hydrocarbon stream to produce alkenes, said system comprising:
- (a) a gas turbine for combusting fuel in the presence of compressed air to produce a flue gas, wherein the flue gas drives a turbine to produce electricity in a coupled generator or work to power a coupled rotating equipment,
- (b) a heat exchanger for being fed with a first portion of the flue gas and with ambient air, wherein the ambient air is heated by the first portion of the flue gas to provide heated air, and
- (c) a steam cracking unit comprising a furnace for cracking the hydrocarbon stream,
- wherein the furnace is fed with fuel and a mixture of a second portion of the flue gas and the heated air, and
- wherein said furnace comprises a radiant section and a convection section.
Dependencies are inferred from the claim text.