Solar assisted gas turbine desalination and carbon capture system

Patent metadata

Field	Value
Publication number	US-10408128-B2
Application number	US-201615142836-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Apr 29, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A system for generating electricity, heat, and desalinated water having a gas turbine system connected to a first electric generator, a waste heat recovery boiler (WHRB) system, a combined heat and power (CHP) generation system connected to a second electric generator, one or more solar powered energy systems, and a desalination system. The desalination system is connected to the CHP generation system and the WHRB system. The gas turbine system generates electricity and heat, the WHRB system is connected to and uses the exhaust of the gas turbine system to provide heat and steam power to the CHP generation system. The CHP generation system produces and provides electricity and heat to the desalination system, which produces product water, and at least one solar powered energy system provides thermal energy to one or more of the gas turbine system, the WHRB system, the CHP generation system, and the desalination system.

First claim

What is claimed is:

1. A method for operating system, the system comprising a gas turbine system including an air compressor connected to a combustion chamber, the combustion chamber connected to a gas turbine, the gas turbine connected to a first electric generator, the system further comprising a waste heat recovery boiler (WHRB) system including at least one boiler and connected to an economizer, an evaporator, and a super heater, the system further comprising a combined heat and power (CHP) generation system including a high pressure turbine, an intermediate pressure turbine, and a low pressure turbine connected to a second electric generator, the system further comprising at least one solar powered energy system, a thermal energy storage system, and a desalination system, the desalination system connected to the CHP generation system and the WHRB system, the system further comprising a carbon capture system and a plurality of proportioning valves configured to control fluid flow through the thermal energy storage system and the at least one solar powered energy system, wherein the gas turbine system is configured to generate electricity and heat, the WHRB system is connected to the gas turbine system and is configured to use exhaust from the gas turbine system to provide heat and provide steam power to the CHP generation system, the CHP generation system is configured to produce electricity and provide heat to the desalination system to produce desalinated water, and the at least one solar powered energy system is configured to provide thermal energy to at least two selected from the gas turbine system, the WHRB system, the CHP generation system, and the desalination system, wherein the carbon capture system includes an absorber, a stripper, and a heat exchange circuit for circulating a heat transfer working fluid, the heat exchange circuit comprising each of a first heat exchanger configured to heat the heat transfer working fluid and a reboiler configured to heat a lean carbon dioxide solvent output from the stripper using the heated heat transfer working fluid provided by the first heat exchanger, the carbon capture system being connected to the WHRB system and the at least one solar powered energy system, wherein the exhaust from the gas turbine system is provided to the WHRB system to recapture a portion of waste heat before being provided to the carbon capture system to separate carbon dioxide from other gases of the exhaust, wherein an output of the WHRB system provides the exhaust, from the gas turbine system, to an input of the carbon capture system at the absorber, wherein the at least one solar powered energy system is connected to the WHRB system and is configured to provide heated heat transfer fluid (HTF) to heat water of the WHRB system, the at least one solar powered energy system is connected to the carbon capture system and is configured to provide heated HTF to transfer energy to the thermal energy storage system for storage and later use and to transfer energy to the heat transfer working fluid in the heat exchange circuit to heat the heat transfer working fluid for use in heating the lean carbon dioxide solvent flowing through the reboiler from the stripper for supply of heated lean carbon dioxide solvent from the reboiler to the stripper, wherein the thermal energy storage system is configured to decouple time of collection of solar energy using the at least one solar powered energy system with time of using the collected energy to heat the lean carbon dioxide solvent output from the stripper for resupply to the stripper, and wherein the plurality of proportioning valves are coupled between the first heat exchanger of the heat exchange circuit and each of the at least one solar powered energy system and the thermal energy storage system and are electronically controllable to selectively provide heated HTF to the first heat exchanger to heat the heat transfer working fluid according to each of the following conditions, respectively: (i) heated HTF is provided to the first heat exchanger from only the at least one solar powered energy system, (ii) heated HTF is provided to the first heat exchanger from only the thermal energy storage system, (iii) heated HTF is provided to the first heat exchanger from both the at least one solar powered energy system and the thermal energy storage system, and (iv) heated HTF is not provided from either the at least one solar powered energy system or the thermal energy storage system, the method comprising:
initiating operation of the system;
monitoring a solar tower output of the at least one solar powered energy system;
comparing the solar tower output with a target value;
increasing a duct burner temperature of a duct burner of the WHRB system;
comparing emissions input to the absorber with a target range of values;
adjusting an amount of power drawn from the thermal energy storage system; and
either continuing operation of the system or halting operation of the system based on (1) the comparison between the solar tower output and the first target value and (2) the comparison between the emissions input to the absorber with the target range of values.

2. The method according to claim 1 , further comprising:
comparing an output of a solar energy collector of the at least one solar powered energy system with a second target value; and/or
comparing an output of a solar collector system with a third target value.

3. A method of operating a system to generate electricity, heat, and desalinated water, the system comprising a gas turbine system including an air compressor connected to a combustion chamber, the combustion chamber connected to a gas turbine, the gas turbine connected to a first electric generator, the system further comprising a waste heat recovery boiler (WHRB) system including at least one boiler and connected to an economizer, an evaporator, and a super heater, the system further comprising a combined heat and power (CHP) generation system including a high pressure turbine, an intermediate pressure turbine, and a low pressure turbine connected to a second electric generator, the system further comprising at least one solar powered energy system, a thermal energy storage system, and a desalination system, the desalination system connected to the CHP generation system and the WHRB system, the system further comprising a carbon capture system and a plurality of proportioning valves configured to control fluid flow through the thermal energy storage system and the at least one solar powered energy system, wherein the gas turbine system is configured to generate electricity and heat, the WHRB system is connected to the gas turbine system and is configured to use exhaust from the gas turbine system to provide heat and provide steam power to the CHP generation system, the CHP generation system is configured to produce electricity and provide heat to the desalination system to produce desalinated water, and the at least one solar powered energy system is configured to provide thermal energy to at least two selected from the gas turbine system, the WHRB system, the CHP generation system, and the desalination system, wherein the carbon capture system includes an absorber, a stripper, and a heat exchange circuit for circulating a heat transfer working fluid, the heat exchange circuit comprising each of a first heat exchanger configured to heat the heat transfer working fluid and a reboiler configured to heat a lean carbon dioxide solvent output from the stripper using the heated heat transfer working fluid provided by the first heat exchanger, the carbon capture system being connected to the WHRB system and the at least one solar powered energy system, wherein the exhaust from the gas turbine system is provided to the WHRB system to recapture a portion of waste heat before being provided to the carbon capture syst

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• MOKHEIMER Esmail Mohamed Ali
• HABIB Mohamed Abdel Aziz

Classifications

• Y02E10/46

  Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines · CPC title

• Y02A20/212

  Solar-powered wastewater sewage treatment, e.g. spray evaporation · CPC title

• Y02A20/142

  Solar thermal; Photovoltaics · CPC title

• Y02A20/131

  Reverse-osmosis · CPC title

• F22B1/006

  using solar heat · CPC title