Latent heat and condensation exchanger

A method for removing a first component from a mixed gas stream comprising:

• passing a refrigerant stream through a first channel of an indirect contact heat exchanger;
• passing a contact liquid stream through a second channel such that the contact liquid stream wets an interior wall of the second channel;
• passing a mixed gas stream through a center of the second channel such that the mixed gas stream and the contact liquid stream exchange heat, mass, or heat and mass;
• wherein the contact liquid stream receives heat from the mixed gas stream and passes the heat to the refrigerant stream, the contact liquid stream remaining isothermal through the second channel;
• and
• wherein the first component condenses from the mixed gas stream into the contact liquid stream, resulting in a depleted gas stream and an enriched contact liquid stream.

A system for removing a first component from a mixed gas stream comprising:

• an indirect contact heat exchanger comprising a process channel and one or more refrigerant channels, the process channel sharing walls with the one or more refrigerant channels;
• the process channel configured to receive a contact liquid stream through an inlet of the process channel and wet an inner surface of the process channel with the contact liquid stream while leaving a gas space inside the process channel;
• the process channel further configured to receive the mixed gas stream through the inlet of the process channel and pass the mixed gas stream through the gas space;
• the one or more refrigerant channels configured to each receive one of a group of refrigerant streams from one or more refrigerant controllers;
• one or more instruments situated at least on an inlet of the process channel, an outlet of the process channel, or both;
• the one or more instruments configured to measure one or more process variables of the process channel and transmit the one or more process variables to a main controller;
• the main controller programmed to receive the one or more process variables and send a signal to each of the one or more refrigerant controllers;
• the one or more refrigerant controllers configured to control a flow rate of one of the group of refrigerant streams to each of the one or more refrigerant channels to maintain the one or more process variables in the contact liquid stream at a setpoint;
• and
• wherein:
• the mixed gas stream condenses the first component into the contact liquid stream;
• the mixed gas stream passes a heat stream to the contact liquid stream;
• the contact liquid stream transmits a first portion of the heat stream to the one of the group of refrigerant streams;
• and
• the contact liquid stream retains a balance of the heat stream.