Energy-saving liquefied natural gas flash steam denitrification reliquefaction device

The invention discloses an energy-saving liquefied natural gas flash steam denitrification reliquefaction device, and relates to the technical field of natural gas equipment, and the energy-saving liquefied natural gas flash steam denitrification reliquefaction device specifically comprises a base, a supporting rod and a liquid storage tank A. The supporting rod is fixedly connected to the upper surface of the base, the liquid storage tank A is fixedly connected to the upper surface of the base, and an initial liquid is arranged in the liquid storage tank A; a liquid inlet structure A is arranged on the left side of the liquid storage tank A, a liquid storage tank B is arranged at the top of the liquid storage tank A, denitrification liquid is arranged in the liquid storage tank B, a liquid inlet structure B is arranged on the left side of the liquid storage tank B, and a gas inlet pipe is fixedly connected to the bottom of the inner wall of the liquid storage tank B. By arranging the liquid storage tank A, t