Heated separation assembly

1. An assembly comprising:

a vessel having a heating section and a separation section;

a plate separating the heating section from the separation section, the plate being configured to be heated by a heating fluid in the heating section to provide indirect heat to the separation section; and

a coil assembly at least partially disposed in the heating section, the coil assembly including an inlet configured to receive a process fluid and an outlet in communication with an inlet of the separation section to direct the process fluid after heating to the separation section.

2. The assembly according to claim 1 , wherein the coil assembly further includes an inlet header that receives the process fluid from the inlet and separates the process fluid into a plurality of streams, a plurality of coils connected to the inlet header to receive the plurality of streams, and an outlet header connected to the plurality of coils to combine the plurality of streams after heating and to deliver the process fluid to the outlet, and wherein the inlet header, plurality of coils, and outlet header are disposed in the heating section and configured to be submerged in the heating fluid.

3. The assembly according to claim 2 , wherein the inlet and outlet headers each house a flow distribution baffle for maintaining a constant flow of the process fluid through the flow distribution baffles across a length of each of the inlet and outlet headers.

4. The assembly according to claim 3 , wherein each flow distribution baffle includes a plurality of openings, and wherein a diameter of the openings proximate a central portion of each baffle is smaller than a diameter of the openings proximate ends of each baffle.

5. The assembly according to claim 1 , wherein the coil assembly further includes a firetube having a heater connection for connection to a heat source and an exhaust connection for connection to an exhaust stack.

6. The assembly according to claim 1 , further including a first baffle disposed in the separation section proximate the inlet of the separation section, a second baffle disposed in the separation section proximate an outlet of the separation section, and a vane section disposed therebetween for serving as a demister for gas flowing therethrough and as a coalescing device for oil flowing therethrough.

7. The assembly according to claim 6 , wherein each of the first and second baffles includes a gas separation section including a plurality of gas openings extending through the baffle, and a liquid separation section below the gas separation section including a plurality of liquid openings extending through the baffle.

8. The assembly according to claim 7 , wherein the plurality of gas openings each have smaller diameters than the plurality of liquid openings.

9. The assembly according to claim 6 , wherein the vane section includes an upstream face having a frame extending around a periphery thereof and a downstream face having a frame extending around a periphery thereof, and wherein the frames include a plurality of openings extending therethrough to allow gas and oil to flow through the upstream and downstream faces at the frames.

10. The assembly according to claim 1 , wherein the vessel further includes a collection section in communication with an outlet of the separation section, wherein the collection section includes a gas outlet, a water collection section, and an oil collection section separated from the water collection section by a weir plate.

11. The assembly according to claim 1 , further including an expansion tank assembly in fluidic communication with the heating section.

12. The assembly according to claim 11 , wherein the expansion tank assembly includes a tank positioned above the vessel, and at least one conduit extending from to tank through the separation section and opening into the heating section.

13. An assembly comprising:

a vessel having a heating section, a separation section positioned above the heating section, and a collection section in communication with an outlet of the separation section;

a plate disposed in the vessel forming a top of the heating section and a bottom of the separation section and configured to be heated by a heating fluid in the heating section to provide indirect heat to the separation section; and

a coil assembly including an inlet configured to receive a process fluid, an inlet header disposed in the heating section that receives the process fluid from the inlet and separates the process fluid into a plurality of streams, a plurality of coils disposed in the heating section and connected to the inlet header to receive the plurality of streams, an outlet header disposed in the heating section and connected to the plurality of coils to combine the plurality of streams after heating, and an outlet that receives the process fluid from the outlet header and is configured to direct the process fluid to the separation section.

14. The assembly according to claim 13 , wherein the inlet header, the plurality of coils, and the outlet header are configured to be submerged in the heating fluid.

15. The assembly according to claim 13 , wherein the inlet and outlet headers each house a flow distribution baffle for maintaining a constant flow of the process fluid through the flow distribution baffles across a length of each of the inlet and outlet headers.

16. The assembly according to claim 15 , wherein each flow distribution baffle includes a plurality of openings, and wherein a diameter of the openings proximate a central portion of each baffle is smaller than a diameter of the openings proximate ends of each baffle.

17. The assembly according to claim 13 , wherein the collection section includes a gas outlet, a water collection section for receiving fluid from the outlet of the separation section, and an oil collection section downstream of and separated from the water collection section by a weir plate.