Patent ID: 10619114

Abstract:
Provided are a liquefaction pretreatment facility for a hydrocarbon gas and the like in which, an influence of contained hydrogen sulfide and oxygen on liquefaction pretreatment can be reduced. In a liquefaction pretreatment facility for a hydrocarbon gas, adsorption vessels are each connected to a treatment gas line configured to supply a hydrocarbon gas containing water, hydrogen sulfide, and oxygen and are each packed with synthetic zeolite for adsorbing and removing water in the hydrocarbon gas. A regeneration gas line is configured to supply a heated regeneration gas to the adsorption vessels to regenerate the synthetic zeolite having adsorbed water through heating. A temperature control system is configured to control a heating temperature of the regeneration gas so that a temperature in the adsorption vessel during regeneration of the synthetic zeolite is less than 230° C., which is a set temperature.