Refinery liquefied gas desulfurization device

The utility model relates to a refinery liquefied gas desulfurization device comprising a primary liquid film hydrogen sulfide removing reactor, a primary hydrogen sulfide removing separation tank, a secondary liquid film hydrogen sulfide removing reactor, a secondary hydrogen sulfide removing separation tank, a fiber-type coalesce, a primary liquid film mercaptan removing reactor, a primary mercaptan removing separation tank, a secondary liquid film mercaptan removing reactor, a secondary mercaptan removing separation tank, a liquid film washing contactor, a washing separation tank, and a plurality of filters, circulation pumps, liquid inlets and liquid outlets connected to one or more of the above components. The device provided by the utility model has the following beneficial effects: the design is reasonable; through the improvements on the desulfurization device and a desulfurization method, problems such as extraction tower amine liquid emulsification entrainment and amine liquid foaming can be solved; hydrogen sulfide can be effectively removed from liquefied gas; amine liquid and alkali liquid consumption can be reduced; and amine liquid and alkali liquid circulation amount can be reduced. Therefore, machine pump power consumption and regenerated steam energy consumption can be reduced. With the desulfurization treatment method, total sulfur content of refined liquefied gas is lower than 20ppm.