Devices, systems, facilities and processes for carbon capture optimization in industrial facilities

Abstract

Devices, systems, and methods for carbon capture optimization in industrial facilities are disclosed herein. An example carbon capture process involves cooling a flue gas stream using at least one gas-to-air heat exchanger disposed upstream of a carbon dioxide (CO2) absorber. Another example carbon capture process involves heating a heat medium for solvent regeneration and CO2 stripping using a fired heater and/or using at least one waste heat recovery unit.

What is claimed is: 
     
         1 . A system for processing a flue gas stream, the system comprising:
 a carbon dioxide (CO2) absorber configured to receive the flue gas stream;   a solvent regenerator in fluid communication with the CO2 absorber, the solvent regenerator configured to receive a rich solvent from the CO2 absorber;   a fired heater in fluid communication with the solvent regenerator, the fired heater configured to heat and transport a heat medium toward the solvent regenerator, and the fired heater further configured to generate a fired heater flue gas and transport the fired heater flue gas by means of a fan or a blower out of the fired heater for combination with the flue gas stream at a position upstream of the CO2 absorber; and   the solvent regenerator is configured to generate a CO2 rich stream comprising CO2 from the flue gas stream and CO2 from the fired heater flue gas, and the CO2 rich stream is dehydrated, compressed and sent to underground geological storage for permanent sequestration.   
     
     
         2 . The system of  claim 1  further comprising a dehydration unit configured to remove water from the CO2 rich stream. 
     
     
         3 . The system of  claim 2 , wherein the system is configured to use the water removed from the CO2 rich stream by the dehydration unit within the system to reduce make-up water requirements. 
     
     
         4 . The system of  claim 2 , wherein the system is configured to use the water removed from the CO2 rich stream by the dehydration unit within the host facility for industrial use. 
     
     
         5 . The system of  claim 2 , wherein the system is configured to use the water removed from the CO2 rich stream by the dehydration unit as a revenue source. 
     
     
         6 . A system for processing a flue gas stream, the system comprising:
 a carbon dioxide (CO2) absorber configured to receive the flue gas stream;   a solvent regenerator in fluid communication with the CO2 absorber, the solvent regenerator configured to receive a rich solvent from the CO2 absorber; and   a fired heater in fluid communication with the solvent regenerator, the fired heater configured to heat and transport a heat medium toward the solvent regenerator, wherein the heat medium is the rich solvent and the fired heater further configured to generate a fired heater flue gas and transport the fired heater flue gas out of the fired heater for combination with the flue gas stream at a position upstream of the CO2 absorber.