Natural gas liquid fractionation plant waste heat conversion to potable water using modified multi-effect distillation system
AssigneeSaudi Arabian Oil Company
InventorsMahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
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Abstract
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 to transfer heat from the NGL fractionation plant to the buffer fluid. The method includes heating water with the buffer fluid discharged from the heat exchanger to produce potable water via train distillation effects.
Claims26
A method of recovering heat, via a waste heat recovery heat exchanger network having heat exchangers, from a Natural Gas Liquid (NGL) fractionation plant for producing potable water, the method comprising:
- heating a buffer fluid via a heat exchanger in the waste heat recovery heat exchanger network with a stream in the NGL fractionation plant, the NGL fractionation plant comprising a dehydrator, a distillation column, and a compressor;
- and
- producing potable water via train distillation effects with heat from the buffer fluid.
A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant via a waste heat recovery heat exchanger network having heat exchangers, for production of potable water, the method comprising:
- flowing a buffer fluid through a heat exchanger 1n the waste heat recovery heat exchanger network in a NGL fractionation plant to transfer heat from a stream in the NGL fractionation plant to the buffer fluid, the NGL fractionation plant comprising a dehydrator column, a distillation column, and a compressor;
- and
- heating brackish water with the buffer fluid discharged from the heat exchanger for production of potable water from the brackish water via a multi-effect-distillation (MED) system comprising train distillation effects.
A method of recovering heat, via a waste heat recovery heat exchanger network having heat exchangers, from a Natural Gas Liquid (NGL) fractionation plant for production of potable water, the method comprising:
- heating a buffer fluid via a heat exchanger 1n the waste heat recovery heat exchanger network with a stream from the NGL fractionation plant, the NGL fractionation plant comprising a dehydrator column, a distillation column, and a compressor, wherein the buffer fluid comprises water or oil;
- heating brackish water with the buffer fluid discharged from the heat exchanger;
- feeding the brackish water heated by the buffer fluid to a multi-effect distillation (MED) system comprising train distillation effects;
- and
- generating potable water from the brackish water via the MED system.
A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant to generate potable water, comprising:
- heating a buffer fluid via a heat exchanger with a stream in the NGL fractionation plant, wherein the stream is discharged from a dehydrator column, a distillation column, or a compressor, and wherein the NGL fractionation plant comprises a waste heat recovery heat exchanger network comprising the heat exchanger;
- heating brackish water with the buffer fluid discharged from the heat exchanger;
- feeding the heated brackish water to a multi-effect distillation (MED) system comprising train distillation effects;
- generating potable water from the brackish water via the train distillation effects;
- and
- generating brine from the brackish water via the train distillation effects.
Dependencies are inferred from the claim text.