Fuel-conditioning skid

A fuel-conditioning skid for an engine, the fuel-conditioning skid comprising:

• an inlet connectable to a source to receive a flow of gaseous fuel containing undesirable compounds;
• an outlet connectable to the engine to deliver a flow of fuel that is substantially free of undesirable compounds;
• an inlet cleaner in fluid communication with the inlet and operable to remove a portion of the undesirable compounds;
• a compressor in fluid communication with the inlet cleaner, the compressor receiving the flow of fuel at a first pressure and discharging the flow of fuel at a second pressure, the second pressure being greater than the first pressure and at least 15 psig;
• a purifier in fluid communication with the inlet cleaner to receive the flow of fuel, the purifier operable to chill the flow of fuel to condense out and remove at least a portion of the remaining undesirable compounds from the flow of fuel;
• and
• a heat exchanger to warm the flow of chilled fuel.