Process and system for waste heat recovery from a flue gas generator

A system for waste heat recovery from a flue gas generator comprising:

• a flue gas quench column configured to receive at least a portion of a hot gas stream from the flue gas generator, wherein the flue gas quench column further comprises a cool water inlet, a hot water discharge, a cooled gas outlet for discharge of a cooled gas stream, and a hot water well comprising a low level switch, a high level switch and a temperature shutdown switch, wherein the temperature shutdown switch, high level switch and low level switch are configured to stop the cooled gas blower and open and close a water supply valve;
• a hot water supply pump connected to the hot water discharge, wherein the hot water supply pump delivers hot water from the flue gasquench column to
• a hot water supply destination;
• a liquid knockout device connected to the cooled gas outlet wherein the cooled gas stream is dehydrated resulting in a cooled and dehydrated gas stream;
• and
• a cooled gas blower connected to the cooled gas outlet, the cooled gas blower pressurizing the cooled and dehydrated gas stream for delivery to a carbon dioxide control mechanism.