Carbon dioxide capture system and method with mass transfer contactor

A method for treating carbon dioxide-containing gas to remove carbon dioxide from the gas for capture in an amine-based scrubbing solution, the method comprising;

• inputting a feed stream of a first process fluid into an interior volume of a process vessel, the first process fluid including at least a first fluid phase that is a gas phase with carbon dioxide to be transferred to a second fluid phase in the internal volume, wherein the second fluid phase is a liquid phase of amine-based carbon dioxide scrubbing solution, the vessel including a fluid mass transfer contactor unit disposed in the interior volume to facilitate mass transfer of the material from the first fluid phase to the second fluid phase, the contactor unit disposed in the interior volume along a flow axis of the vessel, wherein the flow axis extends in a longitudinal direction along the vessel away from a location where the feed stream of the first process fluid is inputted into the interior volume, and wherein the contactor unit comprises:
• a contactor network of flow diversion barriers with flow voids for movement of the process fluids between the flow diversion barriers:
• a plurality of heat exchange channels in the flow diversion barriers to transport heat exchange fluid through the contactor network to cool the process fluids moving through the flow voids during a fluid treating operation;
• and
• at least one heat exchange feed channel to deliver feed of the heat exchange fluid to the heat exchange channels, wherein the heat exchange feed channel extends in a direction of the flow axis and is fluidly connected with the heat exchange channels at multiple feed locations spaced along the flow axis to input the feed of the heat exchange fluid into multiple different locations in the contactor network along the flow axis;
• contacting process fluids including the first fluid phase moving through the flow voids with the flow diversion barriers and transferring at least a portion of the carbon dioxide from the first fluid phase to the second fluid phase;
• during the contacting, heating or cooling the process fluids flowing through at least a portion the flow voids, the heating the process fluids comprising:
• providing a feed stream of the heat exchange fluid to the contactor unit;
• delivering at least a portion of the heat exchange fluid from the feed stream of the heat exchange fluid as the feed of the heat exchange fluid to the at least one heat exchange feed channel and from the at least one heat exchange feed channel through the multiple feed locations into the heat exchange channels;
• and
• removing from the contactor unit an effluent stream of the heat exchange fluid including an effluent of the heat exchange fluid from the heat exchange channels;
• and
• outputting a process effluent stream from the interior volume of the vessel, the process effluent stream including the second fluid phase including captured carbon dioxide transferred from the first fluid phase.