Integrated gasifier and syngas cooler

1. A system, comprising:

an integrated vessel extending along a longitudinal axis, comprising:

a gasifier portion having a gasifier chamber;

a syngas cooler portion disposed axially adjacent to the gasifier portion along the longitudinal axis;

a plurality of platen tubes extending circumferentially about the longitudinal axis, wherein the plurality of platen tubes extends from the syngas cooler portion into the gasifier chamber and is configured to route coolant through the integrated vessel; and

a plurality of membrane tubes extending circumferentially about the longitudinal axis and disposed within the syngas cooler portion of the integrated vessel, wherein the plurality of platen tubes is concentric with the plurality of membrane tubes, and wherein the plurality of platen tubes is disposed radially inward from the plurality of membrane tubes with respect to the longitudinal axis.

2. The system of claim 1 , wherein the plurality of platen tubes extend from a circumferential intake header disposed in the integrated vessel.

3. The system of claim 2 , comprising a support ring assembly configured to support the intake header, wherein the support ring assembly includes a lug that is welded to the intake header.

4. The system of claim 1 , comprising a support ring assembly configured to support a gasifier throat plate of the integrated vessel.

5. The system of claim 1 , comprising a radially outer portion of the integrated vessel configured to route a sealant gas through the radially outer portion, wherein a first side of the radially outer portion comprises the plurality of membrane tubes.

6. The system of claim 5 , comprising an outer wall of the integrated vessel, wherein a second side of the radially outer portion comprises the outer wall.

7. The system of claim 5 , comprising a gasifier throat, wherein a third side of the radially outer portion comprises the gasifier throat plate.

8. The system of claim 1 , wherein the gasifier portion of the integrated vessel is configured to generate syngas, the syngas is routed through the integrated vessel, and the plurality of platen tubes is configured to route coolant through the integrated vessel to extract heat from the syngas to produce steam.

9. The system of claim 8 , wherein the steam comprises superheated steam.

10. A system, comprising:

a gasifier;

a syngas cooler disposed axially adjacent to the gasifier along a longitudinal axis;

a plurality of membrane tubes extending circumferentially about the longitudinal axis and disposed in the syngas cooler;

a plurality of platen tubes extending circumferentially about the longitudinal axis and disposed in the syngas cooler and the gasifier, wherein the plurality of platen tubes is concentric with the plurality of membrane tubes and disposed radially inward from the plurality of membrane tubes with respect to the longitudinal axis; and

a support ring assembly, wherein the support ring assembly is configured to support an intake header, and wherein the gasifier, the syngas cooler, and the support ring assembly are integrated into a common vessel.

11. The system of claim 10 , comprising a radially outer portion of the common vessel configured to route a sealant gas through the radially outer portion, wherein a first side of the radially outer portion comprises the plurality of membrane tubes.

12. The system of claim 11 , comprising an outer wall of the common vessel, wherein a second side of the radially outer portion comprises the outer wall.

13. The system of claim 11 , comprising a gasifier throat plate, wherein a third side of the radially outer portion comprises the gasifier throat plate.

14. The system of claim 10 , wherein the gasifier of the common vessel is configured to generate syngas, the syngas is routed through the common vessel, and the plurality of platen tubes is configured to route coolant through the common vessel to extract heat from the syngas to produce steam.

15. The system of claim 14 , wherein the steam comprises superheated steam.

16. A method of manufacture, comprising:

integrating a gasifier in a first portion of a common vessel;

integrating a syngas cooler in a second portion of the common vessel axially adjacent to the first portion along a longitudinal axis of the common vessel;

providing membrane tubes disposed circumferentially about the longitudinal axis and within the second portion of the common vessel; and

providing platen tubes within the common vessel, concentric with the membrane tubes, and radially inward from the membrane tubes with respect to the longitudinal axis, wherein the platen tubes extend from the syngas cooler of the common vessel into the gasifier of the common vessel.

17. The method of claim 16 , comprising providing an intake header of the common vessel, wherein the intake header is supported by a support ring assembly and configured to receive coolant.

18. The system of claim 17 , comprising coupling a lug of the support ring assembly to the intake header, such that the intake header is supported by the support ring assembly.

19. The method of claim 18 , wherein coupling of the lug of the support ring assembly to the intake header comprises welding the lug of the support ring assembly to the intake header.

20. The method of claim 16 , comprising coupling a support ring assembly to a gasifier throat plate of the common vessel.