US 2026/0273499 A1Published application

Counter-flow electric steam-cracking furnace & methods

AssigneeSabic Global Technologies B.V.

InventorMichael Edward HUCKMAN

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Abstract

Steam cracking systems are disclosed and can include: a quench unit having a quench unit inlet; and a radiative electric furnace having an fluid inlet and a fluid outlet in fluid communication with the quench unit inlet. The furnace can include: a housing defining a radiant heating chamber having a length, a width, and a height; one or more first electric heating elements disposed on a first side of the radiant heating chamber; one or more second electric heating elements disposed on a second side of the radiant heating chamber and spaced apart from the first electric heating element(s); a plurality of first tubes disposed between the first and second electric heating elements, and extending at least a majority of the length of the radiant heating chamber; and a plurality of second tubes disposed between the first and second electric heating elements.

Claims15

Dependent claims

A steam cracking system comprising:

a quench unit having a quench unit inlet;
a radiative electric furnace having an fluid inlet and a fluid outlet in fluid communication with the quench unit inlet, the furnace comprising:
a housing defining a radiant heating chamber having a length, a width, and a height;
one or more first electric heating elements disposed on a first side of the radiant heating chamber;
one or more second electric heating elements disposed on a second side of the radiant heating chamber and spaced apart from the first electric heating element(s);
a plurality of first tubes disposed between the first and second electric heating elements, and extending at least a majority of the length of the radiant heating chamber;
and
a plurality of second tubes disposed between the first and second electric heating elements, and extending at least a majority of the length of the radiant heating chamber;
where the first tubes are in fluid communication with the fluid inlet and configured to carry a fluid in a first direction from a first end of the radiant heating chamber toward a second end of the radiant heating chamber;
and
where the second tubes are in fluid communication with the fluid inlet and configured to carry a fluid in a second direction from a second end of the radiant heating chamber toward a first end of the radiant heating chamber.

8 more elements

A method of steam cracking, the method comprising:

directing fluid into a fluid inlet of a furnace and through a plurality of tubes between first and second electric heating elements disposed on opposing sides of a radiant heating chamber of the furnace to heat the fluid to a reaction temperature and begin a cracking reaction, the tubes extending along a length of the heating chamber and in fluid communication with a fluid outlet of the furnace, the fluid comprising a hydrocarbon feedstock and steam;
directing the fluid from the fluid outlet to an inlet of a quench unit to reduce the temperature of the fluid to below the reaction temperature and slow or stop the cracking reaction;
where the plurality of tubes comprises a plurality of first tubes and a plurality of second tubes, and directing the fluid into the plurality of tubes comprises simultaneously:
directing a first portion of the fluid into the first tubes in a first direction extending from a first end of the heating chamber toward a second end of the heating chamber;
and
directing a second portion of the fluid in a second direction into the second tubes in a second direction extending from a second end of the heating chamber toward the first end of the heating chamber.

3 more elements

Dependencies are inferred from the claim text.