Natural gas liquid fractionation plant waste heat conversion to simultaneous power, cooling and potable water using modified goswami cycle and new modified multi-effect-distillation system

A system comprising:

• a waste heat recovery heat exchanger network comprising heat exchangers coupled to a a Natural Gas Liquid (NGL) fractionation plant, the NGL fractionation plant comprising a propane dehydration section comprising a propane dehydrator column and a de-propanizer section comprising a de-propanizer distillation column, wherein the heat exchangers comprise:
• a first heat exchanger thermally coupled to the propane dehydration section to heat a first buffer stream using heat carried by a propane de-hydration outlet stream from the propane de-hydration section;
• and
• a second heat exchanger thermally coupled to the de-propanizer section to heat a second buffer stream using heat carried by a de-propanizer overhead outlet stream, wherein the first buffer stream is a first type of buffer fluid, and wherein the second buffer stream is a second type of buffer fluid different than the first type;
• and
• a first sub-system comprising a power turbine and heat exchangers, the first sub-system coupled to the waste heat recovery heat exchanger network and configured to generate power and sub-ambient cooling capacity using heat provided by the first buffer stream.