Indirect fired process heater
OwnerParviz Khosrowyarinventor
Life of this patent
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Abstract
An indirect fired process heater apparatus and method. The apparatus includes a toroidal shell having an outer cylinder and an inner cylinder forming a fluid tight enclosure. A plurality of helical heat transfer coils have transfer fluid passing therethrough wherein said heat transfer coils form an axial passageway. A burner directs heat into the axial passageway. The toroidal shell is in fluid communication with the heat transfer coils in order to circulate the heat transfer fluid therethrough. A plurality of helical process heating coils pass through the toroidal shell in order to heat process fluid passing through the process heating coils.
Claims17
An indirect fired process heater apparatus, which comprises:
- a toroidal shell having an outer cylinder and an inner cylinder forming a fluid tight enclosure;
- a plurality of helical heat transfer coils forming an axial passageway wherein said coils have heat transfer fluid passing therein;
- a burner directing hot gas into said axial passageway;
- said toroidal shell in fluid communication with said heat transfer coils to circulate said heat transfer fluid therethrough;
- and
- a plurality of helical process heating coils passing through said toroidal shell to heat process fluid passing through said process heating coils.
An indirect fired process heater apparatus, which comprises:
- a plurality of helical heat transfer coils wherein said coils have heat transfer fluid therein;
- a burner directing hot gas into a passageway formed by said helical heat transfer coils;
- a toroidal shell in fluid communication and coaxial with said heat transfer coils to pass heat transfer fluid therethrough;
- and
- a plurality of helical process heating coils passing through said toroidal shell and coaxial therewith so that process fluid passing through said process heating coils is heated.
A method to heat process fluid, which method comprises:
- heating heat transfer fluid in a plurality of helical heat transfer coils with hot gas from a burner;
- circulating said heat transfer fluid through said helical heat transfer coils and a toroidal shell having an outer cylinder and an inner cylinder forming a fluid tight enclosure;
- and
- directing process fluid through a plurality of helical process heating coils wherein said process heating coils pass through said toroidal shell in order to heat said process fluid.
Dependencies are inferred from the claim text.