Systems and methods for processing methane and other gases

A gas processing system, comprising:

• first, second and third adsorbents, each configured to remove a constituent from a flow of process gas;
• a process gas flow path having individual portions passing through the first, second and third adsorbents;
• and
• a heat exchanger flow path coupled among the three adsorbents, the heat exchanger flow path including individual portions passing through the first, second and third adsorbents, the heat exchanger flow path and the process gas flow path being in fluid isolation from each other, at least a portion of the heat exchanger flow path forming a closed loop between two of the adsorbents.

A gas processing system, comprising:

• first, second and third adsorbents, each configured to remove a constituent from a flow of process gas;
• a process gas flow path having individual portions passing through the first, second and third adsorbents;
• a heat exchanger flow path coupled among the three adsorbents, the heat exchanger flow path including individual portions passing through the first, second and third adsorbents;
• and
• a valve coupled to the heat exchanger flow path, the valve having multiple ports with individual ports being selectively coupleable to the individual portions of the heat exchanger flow path to form a closed loop of the heat exchanger flow path between any two of the adsorbents.

A gas processing system, comprising:

• first, second and third adsorbents, each configured to remove a constituent from a flow of process gas;
• a process gas flow path having individual portions passing through the first, second and third adsorbents;
• a heat exchanger flow path coupled among the three adsorbents, the heat exchanger flow path including individual portions passing through the first, second and third adsorbents, the heat exchanger flow path and the process gas flow path being in fluid isolation from each other;
• a first valve device operatively coupled among the portions of the process gas flow path;
• a second valve device operatively coupled among the portions of the heat exchanger flow path;
• and
• a controller operatively coupled to the first and second valve devices and programmed with instructions that, when executed, direct a flow of heat exchange fluid along the heat exchanger flow path between two of the adsorbents while process gas is directed through a remaining adsorbent and not through the two adsorbents.