Regarding the krypton xenon refining catalytic skid-mounted device,compared with the design data,it is found that the inlet temperature of the adsorber is much higher than the design value,especially in summer,the capacity of kryp-ton and xenon is lower than that in winter,mainly due to the high outlet temperature of the front regenerator and the poor heat exchange effect of the oxygen cooler.In order to increase the production capacity of krypton and xenon,the regenerator was reformed,and the original wound tube structure was changed to double wound tube structure.At the same time,the oxygen cooler was replaced,and low-temperature nitrogen was used to provide cold source,so as to reduce the inlet temper-ature of adsorber,reduce the switching period of catalytic skid-mounted adsorber and reduce the venting times of krypton and xenon,and further improve the production capacity of krypton and xenon.