METHOD FOR SEPARATION OF NON-HYDROCARBON GASES FROM HYDROCARBON GASES

摘要

A method for the separation of non-hydrocarbon gases from hydrocarbon gases,the method comprising the steps of:adding water and an agent adapted to reducethe interfacial tension between water and hydrocarbons to a first stream ofdesired hydrocarbon and undesired non-hydrocarbon gases to form a gas-agent-water mixture;pressurising the gas-agent-water mixture; and cooling the gas-water-agent mixture to initiate the formation of a hydrate richer in desiredhydrocarbons and leaner in undesired non-hydrocarbons relative to the firststream of desired hydrocarbon and undesired non-hydrocarbon gases.