The utility model relates to a dry dehydration techniques field is a dry degree of depth dewatering device of chlorine ethylene gas, and it includes the adsorber barrel, be provided with the support sieve in the lower part of adsorber barrel, fixed mounting has the support component that can support the sieve on the adsorber barrel inner wall of the below of supporting the sieve, at the built -in adsorbent filler that is filled with of the adsorber barrel that supports the sieve top. The utility model has the advantages of reasonable and compact structure, convenient to use, the utility model discloses can effectually solve the adsorbent and pack to break through support the sieve and get into and tracheal and then lead to the fact hidden danger to production down, simultaneously, the tight parts of adsorbent autogenous pressure can prevent effectively that the adsorbent from packing the circumstances of wearing and tearing aggravation and appearing, pack the life -span and have a huge economic value reducing adsorbent filler loss extension, and, the utility model discloses the use is in the effectual control of ability the utility model discloses protect the thermocouple in the time of operating temperature, made the extension of thermocouple life, had certain economic value.