58 results about "Kalina cycle" patented technology

A method of operating a Kalina cycle power generation system includes directing a stream of vaporized binary working fluid to a turbine where it is expanded to produce power. At least a portion of the expanded binary working fluid is directed to a regenerative heat exchanger where it is transformed into a feed binary working fluid. The feed binary working fluid is directed to a vapor generator where it is vaporized. The binary working fluid flow within the regenerative heat exchanger is actively regulated to balance the expanded binary working fluid and the feed working fluid.

A method for capturing working fluid which includes a hazardous component and is discharged from a power generating system, includes directing the discharge to a container. There, the discharged working fluid is combined with a liquid in which the hazardous component is soluble to form a less hazardous mixture.

The invention relates to a thermodynamic circulating system which is applicable to the recycling of waste heat of a vehicle engine. The thermodynamic circulating system is a coupling of low-temperature Kalina cycle used for recycling the waste heat of the cooling water of the engine and high-temperature organic Rankine cycle used for recycling the waste heat of the exhaust of the engine and the waste heat of the lubricating oil, and comprises an exhaust heat exchanger, an expansion machine, a heat exchanger, a pump, a lubricating oil heat exchanger, a lubricating oil circulating pump, a cooling water heat exchanger, a cooling water circulating pump, a heat regenerator, a throttle valve, a separator, the expansion machine, a low-pressure condenser and a pump. The system can overcome the defects that the utilization ratio of the waste heat is not high in the traditional utilization method of the waste heat of the engine, thus obviously improving the recycling efficiency of the waste heat of the vehicle engine.

An enhanced-air conditioning system for tropical and sub-tropical island sea coast environments having access to deep ocean sea water. Sea water from depths of at least about 1200 feet, at a temperature of 47° F. or lower, is utilized as a source for circulating chilled water loops providing district wide air conditioning, in some instances with assistance from electrically driven chillers. The sea water is then further used to condense working fluid in a low temperature Organic Rankine Cycle or Kalina Cycle turbine generator, the heat source for which is the cooling jacket of a diesel engine generator, and also to condense working fluid in a steam driven Rankine Cycle turbine generator, the heat source for which is exhaust heat from the diesel engine. Alternate heat sources, if available, can be utilized. Additional electrical generation from these sources far exceeds the costs of pumping the sea water.

The invention provides a combined cycle generating system for improving heat source usage efficiency, which comprises a steam boiler and an ammonia water evaporator, wherein the steam boiler is sequentially connected with a steam turbine, a condenser and a feed pump in series, and the feed pump is connected back to the stem boiler to form a rankine power cycle; and the ammonia water evaporator is sequentially connected with an ammonia water gas liquid separator, an ammonia water absorbing/condensing device, an ammonia storage tank and an ammonia feeding pump in series, and the ammonia feeding pump is connected back to the ammonia water evaporator to form a kalina power cycle. The combined cycle generating system is characterized in that a heat side outlet of the steam boiler is connected to a heat side inlet of the ammonia water evaporator, or a cold side outlet of the condenser is connected to the heat side inlet of the ammonia water evaporator. The combined cycle generating system provided by the invention has the advantages that: the equipment is simple, the arrangement is compact, complete production can be carried out, and the cost is lower; a kalina power cycle device has mature technology and lower cost; the kalina power cycle has high cycle efficiency at the low temperature; and the rankine-kalina combined cycle generating system is stable, safe and reliable, can be unmanned, has long maintenance period, low maintenance cost, low generating cost and wide applicable scope, and is particularly applied to deep usage of waste heat in a conventional thermal power plant.

A method of operating a Kalina cycle power generation system, includes directing a stream of superheated binary working fluid to a turbine where it is expanded to produce power. A first portion of the expanded binary working fluid is directed to a distiller/condenser where it is transformed into a first concentration binary working fluid, having a first concentration of a component of the binary working fluid, and a second concentration binary working fluid, having a second concentration of the component. At least the first concentration binary working fluid is directed to a regenerative heat exchanger. A second portion of the expanded binary working fluid is also directed to the regenerative heat exchanger. The first concentration binary working fluid is transformed into a vaporized binary working fluid and the second portion of expanded binary working fluid is transformed into a feed binary working fluid in the regenerative heat exchanger. The feed binary working fluid is directed to a vapor generator where it is vaporized. The second concentration binary working fluid is combined with the vaporized feed binary fluid to form the superheated binary working fluid. The flow of binary working fluid within the distiller/condenser is actively regulated to regulate the temperature of the superheated binary working fluid.

The invention discloses a thermal power generation system combined by a water saving type solar combustion gas turbine and a kalian cycle, which comprises a tower type heat collecting system for preheating air, a combustion gas turbine system, a combustion gas turbine power generation system and a kalian cycle power generation system, wherein the combustion gas turbine system is used for receiving and gathering solar irradiation energy, converting the received solar irradiation energy to heat energy, transmitting the heat energy to compressed air and then outputting the compressed air to the combustion gas turbine driven by complementation of solar energy and fuel; the combustion gas turbine power generation system is used for receiving heat energy generated by the solar heat generating system and burning of the fuel and converting the heat energy to electric energy; and the kalian cycle power generation system is used for receiving intermediate cold and hot and waste heat of gas exhausted by the combustion gas turbine and converting the intermediate cold and hot and the waste heat to electric energy. According to the invention, the top cycle takes air as a working medium, and the bottom cycle is kalian cycle, so that water consumption in the solar thermal power generation system is reduced, the disadvantage of keeping high vacuum degree in the traditional steam bottom cycle condenser is solved, the cost is reduced, exhaust gas temperature is further decreased, irreversible loss during heat exchanging process is reduced, and the generating efficiency of the cycle is improved.

The invention discloses a Kalina cycle generation system adopting an ejector. A structure of the Kalina cycle generation system is that an ejector fluid inlet is connected with a preheater working medium lateral outlet, an ejected fluid inlet of the ejector is connected with an outlet of an expansion machine, and a fluid outlet of the ejector is connected with a condenser working medium lateral inlet. The condenser working medium lateral outlet is connected with a working medium pump, a preheater, an evaporator and a gas-liquid separator in sequence. One outlet of the gas-liquid separator is connected with the expansion machine, and the other outlet of the gas-liquid separator is connected with the preheater, thereby forming a closed cycle return circuit. A mixing chamber in the ejector serves as an ammonia water absorbing and mixing chamber. Based on the existing Kalina cycle generation system, the ejector is adopted to replace a throttle valve, and the ejector guides the outlet of the expansion machine to exhaust gas in ejecting mode, thereby avoiding throttling loss, reducing exhaust pressure of the expansion machine, increasing working differential pressure of the expansion machine and improving acting ability and efficiency of the expansion machine.

A method to generate electricity or supply heat by latent heat of turbine discharge. To replace a condenser in the original generating system with evaporator (5) in the absorption heat pump cycle and to use heat pump working substance to absorb the latent heat released by the turbine discharge in the evaporator of the heat pump system. The latent heat is elevated by the absorption heat pump cycle to become high grade heat source and can pass heat energy to the working substance in kalina power cycle (12).The working substance in the kalina power cycle receives the first-level heating up in heat pump cycle absorption tower and the second-level heating up in the condenser and the third-level in the heat exchanger before turning into steam gas which then enters the steam turbine in the kalina cycle to generate power. By employing the method, the electric power plant can increase the generating efficiency by more than 3%, thus realizing energy conservation and environment protection.

A method of operating a power generation system, such as a Kalina cycle power generation system, which includes a turbine, regenerative heat exchanger and vapor generator, is provided. The turbine receives a stream of first working fluid and expands the first working fluid to produce power. The regenerative heat exchanger receives a stream of the expanded first working fluid from the turbine and a stream of second working fluid, and transfers heat from the expanded first working fluid to the second working fluid to heat the second working fluid and condense the expanded first working fluid. The vapor generator receives a stream of the condensed first working fluid and transfers heat from an external heat source to the condensed first working fluid to heat the condensed working fluid for use in the stream of first working fluid. The system is operable in a first state of substantial equilibrium with the stream of second working fluid being received at a first flow rate and in a second state of substantial equilibrium with the stream of second working fluid being regulated so as to be received at a second flow rate, different than the first flow rate.

The invention discloses a combined power cycle power generation system utilizing high-temperature solar energy and LNG cold energy, which comprises a tower type concentrating solar heat collector heatcollection cycle, an S-CO2 recompression Brayton cycle, a Kalina cycle and a natural gas direct expansion process. In the daytime, high-temperature molten salt absorbs heat from a solar heat absorberthrough the concentrated solar heat collection cycle, the heat is transferred to the S-CO2 recompression Brayton cycle system for power generation, waste heat discharged by the S-CO2 recompression Brayton cycle system is stored, and the waste heat is provided for Kalina cycle power generation at night; the problem of uneven solar energy time distribution is solved, meanwhile, the difficulty of high-temperature heat storage is avoided, LNG cold energy is recycled, cold energy losses are avoided, the efficiency of the combined power generation system can be effectively improved, and the systemhas the advantages of being compact in structure, flexible in control, efficient, capable of saving energy, low in cost and high in practicability.

The object of the invention is to provide an optimized and upgraded waste heat utilization Kalina cycle power generation system. The waste heat of a marine diesel engine is used as a cycle heat source, a superheater, a low-temperature regenerator and other components are added to a basic cycle system, and a two-phase expander is used to replace a conventional throttle valve. According to the invention, the superheater is added on the basis of the basic Kalina cycle, thus the temperature of the working medium at the inlet of a steam turbine is improved, the dryness of the exhaust gas at the outlet of the steam turbine is increased, the expansion efficiency of the steam turbine can be effectively improved, and the service life of the steam turbine is prolonged; the low-temperature regenerator is added, thus the energy from the exhaust gas of the steam turbine is recovered and utilized, the utilization ratio of energy can be improved and then the thermal efficiency of the whole cycle is enhanced; and the two-phase expander can recover and utilize the throttling loss of the ammonia-lean solution, thus the exhaust pressure of the steam turbine is reduced, and the performance and efficiency of the steam turbine are improved.

The invention discloses an LNG light hydrocarbon separation coupling supercritical CO2 recompression brayton/kalina combined cycle power generation system. The power generation system comprises an LNGlight hydrocarbon separation system, a concentrating solar heat collection cycle system, a supercritical CO2 recompression brayton cycle system, a kalina cycle system and a natural gas direct expansion system; the LNG light hydrocarbon separation system is used for C2 + light hydrocarbon resource recovery; the concentrating solar heat collection cycle system is used for photo-thermal conversion;and the supercritical CO2 recompression brayton cycle system, the kalina cycle system and the natural gas direct expansion system are used for LNG cold energy and high-temperature solar energy coupling power generation. According to the power generation system, the supercritical CO2 recompression brayton cycle power generation is carried out through solar energy in the daytime, waste heat discharged by supercritical CO2 recompression brayton cycle power generation is stored, and heat is continued to be provided for kalina cycle at night, so that the system reaches a continuous power generationstate, and the effective recovery of C2 + light hydrocarbon resources and the efficient complementary utilization between LNG cold energy and solar energy are realized; and the power generation system has the advantages of being reasonable and compact in structure, safe and flexible in control, efficient and energy-saving, high in practicability and low in cost.

A Kalina Cycle control system monitors one or more operating parameters of the Kalina Cycle. The system calculates one or more optimal operating parameters that allow the Kalina Cycle to operate at an increased efficiency. The system automatically adjusts the one or more actual operating parameters to the optimal parameters to increase the efficiency of the Kalina Cycle. Methods of increasing the efficiency of a Kalina Cycle include automatically adjusting one or more operating parameters to an optimal configuration.

The invention discloses a liquid carbon dioxide energy storage system and method coupled with a Kalina cycle. The system can recover the waste heat of a heat storage medium, fully utilize the heat storage potential of the heat storage medium, reduce the corrosion of turbine blades in the Kalina cycle and reduce the dissipation of potential energy in an ammonia-poor solution in the Kalina cycle. The system is combined with an innovative Kalina cycle and solves the problems of corrosion of the turbine blades and potential energy waste of the ammonia-poor solution in a basic Kalina cycle. The high-temperature liquid carbon dioxide energy storage system is coupled with the Kalina cycle, the waste heat of the heat storage medium is safely and effectively utilized, and the energy utilization rate is increased. An electric heater is additionally arranged in front of a heat storage medium heat storage tank, so that the heat storage potential of the heat storage medium is fully utilized.

The invention provides a supercritical carbon dioxide power generation system and method based on natural gas waste heat recovery. The supercritical carbon dioxide power generation system comprises anair separation device, a combustor, a carbon dioxide turbine, a heat regenerator, a water separator, a first carbon dioxide pressurization device, a carbon dioxide recovery device, a waste-heat-recovery heat exchanger, a Kalina turbine, a Kalina heat regenerator, a first mixer, an ammonia separator, a second mixer, a high-pressure condenser and a gas-liquid separator. According to the supercritical carbon dioxide power generation system, natural gas is taken as fuel, and the full capture of carbon dioxide is achieved by adopting an oxygen-enriched combustion method; in the carbon dioxide turbine, carbon dioxide expands to the subcritical state and achieves a higher expansion ratio than that the supercritical carbon dioxide Brayton cycle, so that the carbon dioxide turbine can do more workand the cycle efficiency can be improved; and during the bottom cycle, waste heat of the supercritical carbon dioxide cycle is recovered by adopting the Kalina cycle, and the concentration of a working medium changes in the working medium phase-change non-isothermal process and cycle process, so that the vaporization process and the heat-source heat release process can be matched well, the irreversible loss in the heat exchange process can be reduced, and the waste heat utilization efficiency can be improved.

The invention relates to a Britten-steam Rankine-ammonia vapor Rankine combined cycle power generation device. Exhaust of a gas turbine generator unit serves as heat sources of a steam Rankine cycle, a condenser in the steam Rankine cycle serves as an evaporator of a low temperature end Kalina cycle, a positive pressure operating method is adopted by the condenser, latent heat of vaporization of high temperature end steam is effectively recycled for generating electricity, and therefore the Britten, the steam Rankine and the Kalina cycle are compounded together to form an enforceable combined cycle device. A method of indirect heat transfer between ammonia water mixture and exhaust gas is adopted, and therefore the problem of safe operation of a Kalina cycle unit is solved. Compared with traditional combined cycle power generation, the pollution produced in the process of generating of the combined cycle power generation device is reduced by more than 70%. The Britten-steam Rankine-ammonia vapor Rankine combined cycle power generation device not only can be used for energy conservation improvement on an existing machine unit, but also can be used for designing and building a newly built machine unit. The Britten-steam Rankine-ammonia vapor Rankine combined cycle power generation device is especially suitable for new construction, extending construction and reconstruction of a power unit in water-deficient areas, power shortage areas and other areas, and therefore the Britten-steam Rankine-ammonia vapor Rankine combined cycle power generation device has remarkable economic, social and environmental protection benefits.

The invention belongs to the field of combined cooling and power, and provides a combined cooling and power system driven by gas turbine exhaust smoke waste heat and a method thereof. The problems that a combined cooling and power system is low in generated power, and the utilization rate of the gas turbine exhaust smoke waste heat is low are solved. The effects that the generated power is high, and the utilization rate of the gas turbine exhaust smoke waste heat is high are achieved. The combined cooling and power system driven by gas turbine exhaust smoke waste heat comprises a recompressedsupercritical CO2 power cycle subsystem, a Kalina cycle subsystem and an ammonia absorption refrigeration cycle subsystem; the recompressed supercritical CO2 power cycle subsystem is used for drivinga turbine I to do work through exhaust smoke of a gas turbine, and electric power is generated; the Kalina cycle subsystem is used for transmitting the exhaust smoke waste heat, utilized by the recompressed supercritical CO2 power cycle subsystem, of the gas turbine to a waste heat boiler so that a turbine II can be driven to do work, and electric power is generated; and the ammonia absorption refrigeration cycle subsystem is used for recycling part of heat of CO2 in a main compression pipeline of the recompressed supercritical CO2 power cycle subsystem to conduct refrigeration.

Certain aspects of natural gas liquid fractionation plant waste heat conversion to simultaneous power and potable water using Kalina Cycle and modified multi-effect-distillation system can be implemented as a system. The system includes a waste heat recovery heat exchanger network coupled to multiple heat sources of a Natural Gas Liquid (NGL) fractionation plant. The heat exchanger network is configured to transfer at least a portion of heat generated at the multiple heat sources to a first buffer fluid and a second buffer fluid flowed through the first heat exchanger network. The system includes a first sub-system configured to generate power. The first sub-system is thermally coupled to the waste heat recovery heat exchanger. The system includes a second sub-system configured to generate potable water from brackish water. The second sub-system is thermally coupled to the waste heat recovery heat exchanger.

The invention relates to an ultralow-temperature waste heat compound heating recycling system and a recycling method. The recycling method comprises the following steps: an ultralow-temperature heat source is heated by utilizing a small amount of high-temperature heat source; and then ultralow-temperature waste heat is converted into effective electric energy through an organic working medium Rankin cycle or Kalina cycle. By adopting the scheme of the method disclosed by the invention, discharge of low-temperature gas containing water steam and other pollutants can be effectively avoided; more importantly, certain energy-saving benefit can be brought to pollution treatment enterprises, so that activity of the enterprises in treating pollution and reducing pollution discharge is improved; and therefore, environment-protection benefit and energy-saving benefit brought by the invention are great.

The invention discloses a kalina cycle waste heat power generation system coupled with lithium-bromide absorption-type refrigerating. The kalina cycle waste heat power generation system coupled with lithium-bromide absorption-type refrigerating comprises a kalina cycle power generation system, a lithium-bromide absorption-type refrigerating system and a second evaporator, wherein the kalina cycle power generation system comprises a first evaporator, a gas-liquid separator, a turbine, a power generator driven through the turbine, a first heat exchanger, a mixer, a second heat exchanger and a first condenser; and the lithium-bromide absorption-type refrigerating system comprises a regenerator, a second condenser, an absorber and a third heat exchanger. According to the reproducer, the kalina cycle power generation system and the lithium-bromide absorption-type refrigerating system are coupled, the advantages of the combination of the kalina cycle power generation system and the lithium-bromide absorption-type refrigerating system are fully exerted, and the waste heat recovery efficiency and the power generation efficiency are greatly improved.

The invention provides a solar supercritical carbon dioxide dual-cycle power generation system and method. The solar supercritical carbon dioxide dual-cycle power generation method comprises the following steps that a solar light gathering and heat collecting unit is used for receiving gathered solar radiation energy, the received solar radiation energy is converted into high-temperature heat energy through a heat transfer working medium, and the high-temperature heat energy serves as a heat source to be conveyed to a supercritical carbon dioxide power generation unit; the supercritical carbondioxide power generation unit heats a supercritical carbon dioxide working medium through high-temperature heat energy, converts the received heat energy into electric energy through a turbine and agenerator set and outputs the electric energy; and a Kalina cycle power generation unit takes a heat transfer working medium of the solar light gathering and heat collecting unit and supercritical carbon dioxide waste heat generated after the supercritical carbon dioxide power generation unit works as driving heat sources, and heat release and heat absorption are carried out in the absorption anddesorption process of an absorbent on a refrigerant, so that power generation is achieved, and the generated medium-temperature heat energy is conveyed to the supercritical carbon dioxide power generation unit. The structure realizes gradient utilization of heat energy and improves the energy utilization efficiency.

The invention relates to a Kalina type industrial waste heat integrated recovery device. Phase change heat exchanger technology based on an indirect heat transfer method is adopted, ammoniacal liquor mixture is adopted to recover combustible, explosive, poisonous, corrosion high temperature fluid or the high temperature fluid containing dust and recover waste heat of waste water and exhaust steam produced in industrial processes. Electricity is generated through a Kalina cycle power unit so that integrated recovery of residual heat resources and high-efficient power generation of the whole system is achieved, and thermodynamic cycle processes of an original system in the process of industrial production are not affected. The Kalina type industrial waste heat integrated recovery device not only can be used for recovering the waste heat of the exhaust gas in an industrial furnace, a utility boiler, an internal-combustion engine and the like, but also can be used for integrated utilization of the residual heat resources in a chemical plant. The Kalina type industrial waste heat integrated recovery device has remarkable economic, social and environmental protection benefits.