The invention provides a device and method for producing
ethylene through hydrogenation of
high concentration acetylene. The device comprises an
acetylene hydrogenation reactor, a
solvent absorbing
tower, and an
ethylene condensing device. The structure of the device is simple. An
acetylene feed pipeline is connected to the
acetylene hydrogenation reactor through an acetylene
solvent tank; acetylene is dissolved into a
solvent and then introduced into the
acetylene hydrogenation reactor; through
liquid phase pressurization, the pressure limitation of acetylene is overcome, thus hydrogenation of acetylene can be carried out under a pressure of 1.5 MPaG or more; the
acetylene hydrogenation reactor is connected to the solvent absorbing
tower, after the acetylene hydrogenation, the obtained
gas phase is absorbed by the solvent, the multi-
tower rectification separation in the conventional technology is not needed therefore, and the
energy consumption is low. The provided device and method can utilize the excess
calcium carbide product, greatly relieves the demand on
ethylene in our country, and has an important meaning for the
sustainable development of acetylene industry of our country, energy saving, and emission reduction.