System and method for cooling syngas within a gasifier system

摘要

A vessel for use in a gasification system is provided. The vessel includes a shell and a heat exchange structure positioned within the shell. The heat exchange structure defines a central cavity configured to receive and to direct a syngas to a quenching portion positioned downstream of the central cavity along a syngas path. A passageway is disposed between the shell and the heat exchange structure. A liquid seal is positioned upstream of the quenching portion, and the liquid seal is configured to block transport of at least one of the syngas between from the quenching portion into the passageway and inert gas from the passageway into the quenching portion.

主权项

1. A gasification system, comprising:
a gasifier configured to produce a syngas and particulate matter; and a syngas cooler coupled in flow communication with the gasifier and configured to receive the syngas and the particulate matter from the gasifier, the syngas cooler comprising:
a shell;a heat exchange portion comprising a heat exchange structure positioned within a first region of the shell, wherein a passageway is disposed within the first region;a quenching portion disposed in a second region downstream of the heat exchange portion, wherein the quenching portion has a quench chamber configured to facilitate cooling at least one of the syngas or the particulate matter; anda liquid seal positioned between the first and second regions, wherein the liquid seal is configured to support a liquid across a gap between the first and second regions, and the liquid seal is configured to block at least one of transport or diffusion of the syngas into the passageway or transport or diffusion of an inert gas out of the passageway.