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.

The present invention relates to a waterless system and method for cooling a metallurgical processing furnace. Supercritical carbon dioxide (sCO.sub.2) is used as a coolant, as opposed to water, which provides several advantages. For example, sCO.sub.2 can be used at higher temperatures, the risk of an explosion (with use of water) is eliminated, there are no problems with regard to reverse solubility of water at higher temperatures that can foul passageways, and smaller cooling passages can be used thus reducing the cost of cooling panels. A system is disclosed which uses a reservoir to store the sCO.sub.2, a compressor or pump to cause the delivery of the sCO.sub.2 to cooling passages in the furnace, a pressure reducing valve or a turbine to decrease the pressure of the sCO.sub.2, and a heat exchanger to cool the sCO.sub.2 to a liquid state as the sCO.sub.2 travels back to the reservoir.

The present disclosure relates to cogeneration of power and one or more chemical entities through operation of a power production cycle and treatment of a stream comprising carbon monoxide and hydrogen. A cogeneration process can include carrying out a power production cycle, providing a heated stream comprising carbon monoxide and hydrogen, cooling the heated stream comprising carbon monoxide and hydrogen against at least one stream in the power production cycle so as to provide heating to the power production cycle, and carrying out at least one purification step so as to provide a purified stream comprising predominately hydrogen. A system for cogeneration of power and one or more chemical products can include a power production unit, a syngas production unit, one or more heat exchange elements configured for exchanging heat from a syngas stream from the syngas production unit to a stream from the power production unit, and at least one purifier element configured to separate the syngas stream into a first stream comprising predominately hydrogen and a second stream.

An integrated chemical looping combustion (CLC) electrical power generation system and method for diesel fuel combining four primary units including: gasification of diesel to ensure complete conversion of fuel, chemical looping combustion with supported nickel-based oxygen carrier on alumina, gas turbine-based power generation and steam turbine-based power generation is described. An external combustion and a heat recovery steam generator (HRSG) are employed to maximize the efficiency of a gas turbine generator and steam turbine generator. The integrated CLC system provides a clean and efficient diesel fueled power generation plant with high CO.sub.2 recovery.

Power recovery turbines can be used debottlenecking of an existing plant, as well as recover electric power when revamping a plant. A process for recovering energy in a petroleum, petrochemical, or chemical plant is described. A fluid stream having a first control valve thereon is identified. A first power-recovery turbine is installed at the location of the first control valve, and at least a portion of the first fluid stream is directed through the first power-recovery turbine to generate electric power as direct current therefrom. The electric power is then recovered.

Apparatus and methods for recovering energy in a petroleum, petrochemical, or chemical plant as described. The apparatus includes a fluid process stream flowing through a petroleum, petrochemical, or chemical process zone. There are at least one variable-resistance power-recovery turbine, a portion of the first process stream flowing through the first power-recovery turbine to generate electric power as direct current therefrom. There is a single DC to AC inverter electrically connected to at least one power-recovery turbine, and the output of the DC to AC inverter electrically connected to a first substation.

Configurations and related processing schemes of direct or indirect inter-plants heating systems (or both) synthesized for grassroots medium grade crude oil semi-conversion refineries to increase energy efficiency from specific portions of low grade waste heat sources are described. Configurations and related processing schemes of direct or indirect inter-plants heating systems (or both) synthesized for integrated medium grade crude oil semi-conversion refineries and aromatics complex for increasing energy efficiency from specific portions of low grade waste sources are also described.

Configurations and related processing schemes of direct or indirect (or both) inter-plants heating systems synthesized for grassroots medium grade crude oil semi-conversion refineries to increase energy efficiency from specific portions of low grade waste heat sources are described. Configurations and related processing schemes of direct or indirect (or both) inter-plants heating systems synthesized for integrated medium grade crude oil semi-conversion refineries and aromatics complex for increasing energy efficiency from specific portions of low grade waste sources are also described.

Certain aspects of natural gas liquid fractionation plant waste heat conversion to simultaneous power, cooling and potable water using integrated mono-refrigerant triple cycle and modified MED system can be implemented as a system that includes two heating fluid circuits thermally coupled to multiple heat sources of a NGL fractionation plant. An integrated triple cycle system, which includes an organic Rankine cycle (ORC), a refrigeration cycle and an ejector refrigeration cycle, is thermally coupled to the first heating fluid circuit. A MED system, configured to produce potable water, thermally coupled to the second heating fluid circuit. The system includes a control system configured to actuate control valves to selectively thermally couple the heating fluid circuits to portions of the heat sources of the NGL fractionation plant.

A dry-cooling system useful in absorbing heat from a heat source and related dry cooling methods including a depolymerization cooling unit (DCU) in fluid communication with a polymerization heating unit (PHU). The DCU includes a DCU heat exchanger which receives a polymer and a catalyst, wherein contact of the polymer and the catalyst within the DCU heat exchanger causes an endothermic reaction, converting the polymer to a monomer and drawing heat from a first heat source. The monomer is then withdrawn from the DCU. The PHU includes a PHU heat exchanger, which receives the monomer, wherein contact of the monomer with the catalyst causes an exothermic reaction within the PHU heat exchanger, converting the monomer to the polymer. The polymer is then withdrawn from the PHU for conveyance back to the DCU, and the cycle is repeated.