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US 12,246,299 B2Granted
Electric steam cracker
AssigneeHaldor TopsøE A/S
InventorPeter Mølgaard Mortensen
Life of this patent
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Abstract
A reactor system and a process for carrying out steam cracking of a feed gas comprising hydrocarbons is provided, i where the heat for the reaction is provided by resistance heating by means of electrical power, so that a product stream comprising at least one olefin compound is obtained.
Claims21
A reactor system for carrying out steam cracking of a feed gas comprising hydrocarbons, said reactor system comprising:
- a supply of feed gas comprising a hydrocarbon and steam;
- a structured body arranged for performing steam cracking of said feed gas comprising hydrocarbons, said structured body comprising a macroscopic structure of electrically conductive material, wherein said macroscopic structure comprises a ceramic coating;
- a pressure shell housing said structured body, said pressure shell comprising an inlet for letting in said feed gas and an outlet for letting out product gas, wherein said inlet is positioned so that said feed gas enters said structured body in a first end of said structured body and wherein said outlet is positioned so that said product gas exits said structured body from a second end of said structured body;
- a heat insulation layer between said structured body and said pressure shell;
- and
- at least two conductors electrically connected to said structured body and to an electrical power supply placed outside said pressure shell, wherein said electrical power supply is dimensioned to heat at least part of said structured body to a temperature of at least 500° C. by passing an electrical current through said macroscopic structure, wherein said at least two conductors are connected to the structured body at a position on the structured body closer to said first end of said structured body than to said second end of said structured body, and wherein the structured body is constructed to direct an electrical current to run from one conductor substantially to the second end of the structured body and return to a second of said at least two conductors,
- wherein the outlet is an outlet for a product stream comprising at least one olefin compound,
- wherein the pressure shell has a first half portion at a first longitudinal end of the pressure shell and a second half portion at a second longitudinal end of the pressure shell, wherein the inlet is in the first half portion of the pressure shell and the outlet is in the second half portion of the pressure shell,
- wherein the at least two conductors enter the pressure shell in the first half portion, closer to the inlet than to the outlet, such that, during operation, the at least two conductors are located in a portion of the reactor system that is colder than other parts of the reactor system.
6 more elements
A reactor system for carrying out steam cracking of a feed gas comprising hydrocarbons, said reactor system comprising:
- a supply of feed gas comprising a hydrocarbon and steam;
- a structured body arranged for performing steam cracking of said feed gas comprising hydrocarbons, said structured body comprising a macroscopic structure of electrically conductive material, wherein said macroscopic structure comprises a ceramic coating;
- a pressure shell housing said structured body, said pressure shell comprising an inlet for letting in said feed gas and an outlet for letting out product gas, wherein said inlet is positioned so that said feed gas enters said structured body in a first end of said structured body and said product gas exits said structured body from a second end of said structured body;
- a heat insulation layer between said structured body and said pressure shell;
- and
- at least two conductors electrically connected to said structured body and to an electrical power supply placed outside said pressure shell, wherein said electrical power supply is dimensioned to heat at least part of said structured body to a temperature of at least 500° C. by passing an electrical current through said macroscopic structure, wherein said at least two conductors are connected to the structured body at a position on the structured body closer to said first end of said structured body than to said second end of said structured body, and wherein the structured body is constructed to direct an electrical current to run from one conductor substantially to the second end of the structured body and return to a second of said at least two conductors,
- wherein the outlet is an outlet for a product stream comprising at least one olefin compound, and
- wherein the reactor system further comprises an inner tube in a heat exchange relationship with said structured body, said inner tube configured to withdraw a product gas from the structured body such that the product gas exchanges heat with a gas flowing over the structured body.
5 more elements
Dependencies are inferred from the claim text.