Rankine cycle plant and process for the regasification of liquefied gas

A Rankine cycle plant for the regasification of liquefied gas, comprising:

• a Rankine closed loop system comprising at least:
• one evaporator;
• an expansion turbine provided with an inflow opening, an outflow opening and at least one auxiliary outlet;
• a generator operatively connected to the expansion turbine;
• a condenser;
• a pump;
• conduits configured to connect the evaporator, the expansion turbine, the condenser and the pump according to a closed cycle in which a working fluid circulates;
• a source of liquefied gas at a cryogenic temperature, wherein the source of liquefied gas is operatively coupled to the condenser to receive heat from the working fluid flowing out from the expansion turbine so as to take the liquefied gas to the gaseous state;
• a source of a heating fluid at a higher temperature than the cryogenic temperature, wherein the source of heating fluid is operatively coupled to the evaporator to transfer heat to the working fluid coming from the condenser;
• wherein the expansion turbine is a radial centrifugal turbine, wherein said at least one auxiliary outlet is interposed between successive stages of said expansion turbine, and
• wherein the condenser is a multilevel condenser and comprises at least two condensing chambers, a lower chamber of said at least two condensing chambers is connected to the outflow opening and an upper chamber of said at least two condensing chambers is connected to said at least one auxiliary outlet, and
• wherein the expansion turbine comprises a single rotor disc and a plurality of stages radially arranged one after the other at a front face of the rotor disc, and wherein the auxiliary outlet opens between two of said stages.