▎ 摘　　要

NOVELTY - The exchanger has a first heat exchanger body (1) whose upper part is fixed with a refined gas entrance (5). A lower part of the first heat exchanger body is fixed with a mixed gas outlet (6). An upper part of a second heat exchanger body (2) is fixed with a refined gas outlet (7). A lower part of the second heat exchanger body is fixed with a mixed gas entrance (8). Two ends of a first bent pipe (3) are connected with the refined gas entrance and the refined gas outlet. The first bent pipe and a second bent (4) pipe are covered with heat insulating layer and a graphene heat separating layer. USE - Energy-saving methane heat exchanger. ADVANTAGE - The exchanger has high heat exchange and emission efficiency. DETAILED DESCRIPTION - The bent pipe is made of copper material. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of an energy-saving methane heat exchanger in partial section. Heat exchanger bodies (1, 2) Bent pipes (3, 4) Refined gas entrance (5) Mixed gas outlet (6) Refined gas outlet (7) Mixed gas entrance (8)