Application of Low Temperature Separation in Molecular Sieve Dehydration of Natural Gas
The article introduces the application of low temperature separation in molecular sieve dehydration of natural gas through the introduction of a dehydration unit of natural gas treatment in a Gas Terminal in China.With circulating water to cool the deacidified feed gas for water pre-separation,the water capacity for molecular sieve adsorption declines.The reduced regeneration time of the molecular sieve gives rise to smaller molecular sieve dryers with lower molecular sieve occupation.With deep dehydration process of the regeneration gas through low temperature treatment,the regeneration gas is mixed with the external dry gas,cancelling the circulation process of regeneration gas.Another heat exchanger and another water separation drum are required for the new process,compared with the traditional process.The mixed dry gas meets the requirements of downstream users for water dew point.This measure greatly reduces the operating capacity of the unit with better economics.
natural gasdehydrationmolecular sievelow temperature separation
万方数据
维普
