Fired process heater with a manifold support assembly

A fired heater, comprising:

• a convection coil assembly comprising a convection coil bundle inlet, a convection coil bundle outlet, and a convection flow path through a convection coil bundle intermediate of the convection coil bundle inlet and the convection coil bundle outlet;
• a radiant coil assembly comprising a radiant coil bundle inlet, a radiant coil bundle outlet, and a radiant flow path through a radiant coil bundle intermediate of the radiant coil bundle inlet and the radiant coil bundle outlet, wherein the radiant coil bundle inlet is fluidly connected to the convection coil bundle outlet of the convection coil assembly;
• and
• a manifold support assembly fluidly connected to, positioned downstream of, and configured to support the radiant coil assembly, wherein the manifold support assembly comprises a manifold support inlet, a manifold support outlet, and a manifold support flow path in fluid communication with a manifold support coil bundle intermediate of the manifold support inlet and the manifold support outlet.

A fired heater, comprising:

• a convection coil assembly comprising a convection coil bundle inlet, a convection coil bundle outlet, and a convection flow path through a convection coil bundle intermediate of the convection coil bundle inlet and the convection coil bundle outlet;
• a radiant coil assembly comprising a radiant coil bundle inlet, a radiant coil bundle outlet, and a radiant flow path through a radiant coil bundle intermediate of the radiant coil bundle inlet and the radiant coil bundle outlet, wherein the radiant coil bundle inlet is fluidly connected to the convection coil bundle outlet of the convection coil assembly;
• and
• a manifold support assembly fluidly connected to, positioned upstream of, and configured to support the radiant coil assembly, wherein the manifold support assembly comprises a manifold support inlet, a manifold support outlet, and a manifold support flow path in fluid communication with a manifold support coil bundle intermediate of the manifold support inlet and the manifold support outlet.