Nova Chemicals (International) S.a.

Jeffrey Stephen Crowe

Leslie Wilfred Benum

Mark Andrew Taylor

Vasily Simanzhenkov

Eric Clavelle

Lucas MacNeil Harding

Grazyna Petela

Seyed Majid Hoseini

The present disclosure seeks to provide a metallic burner tile for use in industrial processes such as cracking. The tile is substantially metallic (e.g. more than 80%) with the balance being ceramic coating on surfaces exposed to high temperature. The tile is lighter and more durable than the current ceramic burners.

Metallic burner tiles

A substantially linear ceramic or metallic radiant of ellipsoidal or polygonal cross section is placed proximate furnace tubes or coils in the radiant section of a fired heater to increase the radiant heat directed to the surface of the tubes or coils.

Furnace tube radiants

Furnace tubes for cracking hydrocarbons that in an embodiment have a longitudinal array of pins having i) a maximum height from about 2 to about 4.8 cm; ii) a contact surface with the tube, having an area from about 0.1% to about 10% of the tube external cross section area iii) a uniform cross section along the length of the pin. (i.e., they are typically not tapered); and iv) a length to diameter ratio from about 4:1 to about 2:1 have an improved heat transfer over bare fins and reduced stress relative to a fined tube.

Pinned furnace tubes

In an embodiment of the invention, furnace tubes for cracking hydrocarbons having a longitudinal array of pins having i) a maximum height from 0.5-1.3 cm; ii) a contact surface with the tube, having an area from 0.1%-10% of the tube external surface area iii) a uniform cross section along the length of the pin. (i.e. they are not tapered); and iv) a length to diameter ratio from 1.5:1 to 0.5:1 have an improved heat transfer over bare fins and reduced stress relative to a fined tube.

Growing community of inventors

Calgary, Canada

Jeffrey Stephen Crowe