Recovering heat from a Natural Gas Liquid (NGL) fractionation plant via a waste heat recovery heat exchanger network including heating a buffer fluid in a heat exchanger with a stream from the NGL fractionation plant and discharging the heated buffer fluid to an integrated triple cycle system. Generating cooling capacity for the NGL fractionation plant via the integrated triple cycle system with heat from the buffer fluid.

A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant for production of potable water. The method includes heating a buffer fluid via a heat exchanger in the NGL fractionation plant to transfer heat from the NGL fractionation plant to the buffer fluid. The method includes heating feed water with the buffer fluid discharged from the heat exchanger for production of potable water via a multi-effect-distillation (MED) system. The method may include producing potable water with heat from the buffer fluid in the MED system.

A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant for production of potable water. The method includes heating a buffer fluid via a heat exchanger in the NGL fractionation plant to transfer heat from the NGL fractionation plant to the buffer fluid. The method includes heating feed water with the buffer fluid discharged from the heat exchanger for production of potable water via a multi-effect-distillation (MED) system. The method may include producing potable water with heat from the buffer fluid in the MED system.

Systems, apparatus, and methods described herein can overcome some of the disadvantages associated with existing internal combustion engines. In particular, systems, apparatus, and methods described herein relate to improving the combustion process of internal combustion engines through insert technologies, engine modifications, control technologies, and/or other methodologies.

A system for recovery of thermal energy from a first closed cooling loop for cooling skid pipes is provided. The first closed cooling loop comprising a circulation fluid receiving thermal energy from said skid pipes, and a cooling source. The system being capable of measuring the temperature in said first closed cooling loop converting thermal energy into electricity. The system further including a flow control system arranged to control input of thermal energy into a power conversion module, wherein said flow control system is arranged to cut off said cooling source from said first closed cooling loop when the measured temperature is below a first predetermined threshold temperature (TsTART), such that said circulation fluid is directed to a hot side of said power conversion module only, to provide a thermal energy input into said power conversion module.

No new matter is added.

Processes for recovering electrical power from a process unit waste heat steam generation system are described. A power-recovery turbine reduces the pressure of a stream of superheated steam to a pressure lower than that needed by the steam reboiler for use in other process units or equipment in the plant.

Processes for recovering electrical power from a process unit waste heat steam generation system are described. A power-recovery turbine reduces the pressure of a stream of superheated steam to a pressure lower than that needed by the steam reboiler for use in other process units or equipment in the plant.

The present disclosure provides oxidative coupling of methane (OCM) systems for small scale and world scale production of olefins. An OCM system may comprise an OCM subsystem that generates a product stream comprising C.sub.2+ compounds and non-C.sub.2+ impurities from methane and an oxidizing agent. At least one separations subsystem downstream of, and fluidically coupled to, the OCM subsystem can be used to separate the non-C.sub.2+ impurities from the C.sub.2+ compounds. A methanation subsystem downstream and fluidically coupled to the OCM subsystem can be used to react H.sub.2 with CO and/or CO.sub.2 in the non-C.sub.2+ impurities to generate methane, which can be recycled to the OCM subsystem. The OCM system can be integrated in a non-OCM system, such as a natural gas liquids system or an existing ethylene cracker.

The present disclosure provides oxidative coupling of methane (OCM) systems for small scale and world scale production of olefins. An OCM system may comprise an OCM subsystem that generates a product stream comprising C.sub.2+ compounds and non-C.sub.2+ impurities from methane and an oxidizing agent. At least one separations subsystem downstream of, and fluidically coupled to, the OCM subsystem can be used to separate the non-C.sub.2+ impurities from the C.sub.2+ compounds. A methanation subsystem downstream and fluidically coupled to the OCM subsystem can be used to react H.sub.2 with CO and/or CO.sub.2 in the non-C.sub.2+ impurities to generate methane, which can be recycled to the OCM subsystem. The OCM system can be integrated in a non-OCM system, such as a natural gas liquids system or an existing ethylene cracker.

A method of heat recovery from a Natural Gas Liquid (NGL) fractionation plant for generating power and sub-ambient cooling, the method including heating a buffer fluid in a heat exchanger with heat from the NGL fractionation plant, and generating power and sub-ambient cooling via a sub-system having a power turbine with heat from the buffer fluid.