13 results about "Kalina cycle" patented technology

The embodiment of the present application provides a kind of liquid spray condensing system of ammonia circulating power generation system.The system includes liquid storage tank, working medium pump, spray section, condenser and control valve.By spraying low concentration liquid ammonia into high concentration ammonia vapor, the ammonia concentration is reduced, the condensing effect is ensured, the ammonia vapor is prevented from entering the liquid storage tank, the system back pressure is reduced and the system efficiency is improved.The present application only needs to be simply modified to realize the function of the original Kalina cycle power generation system, and the structure is simple and easy to implement.

The invention provides a light energy-electric energy-chemical energy coupling coal-fired unit system and an operation system. The system comprises a coal-fired power generation subsystem, a photovoltaic-thermochemistry subsystem and a Kalina circulation subsystem. The coal-fired power generation subsystem is connected with the photovoltaic-thermochemistry subsystem, and the photovoltaic-thermochemistry subsystem is connected with the Kalina circulation subsystem; the coal-fired power generation subsystem is used for basic power generation and peak regulation of the whole system; the photovoltaic-thermochemistry subsystem is used for converting solar energy into electric energy through a photovoltaic device and driving a reversible thermochemistry device based on a calcium-based compound by using the electric energy, so that conversion and storage of electric energy-heat energy-chemical energy are realized; the Kalina circulation subsystem is used for waste heat utilization of thermal chemical reaction products. The heat storage / release temperature is matched with the coal-fired system through thermochemical reaction pressure regulation and control, dynamic regulation of the Kalina cycle working medium concentration is combined, the irreversible loss of heat transfer is remarkably reduced, and the comprehensive energy utilization efficiency is improved.

The invention provides a multi-heat source self-adaptive coupling Kara cycle heat supply method and system, and the method comprises the following steps: pressurizing an ammonia water mixture, preheating the pressurized ammonia water mixture, and reheating the preheated ammonia water mixture by using one heat source in multiple heat sources to form a gas-liquid two-phase flow; the gas-liquid two-phase flow is separated, separated ammonia-rich steam is subjected to expansion acting, dead steam generated after acting is mixed with the separated ammonia-poor liquid phase, and a uniform working medium is formed; the working medium and the heat supply working medium are subjected to heat exchange, and finally the cooled working medium is pressurized and preheated again to complete the circulation process; dependence of a traditional heat supply system on high-grade energy is effectively reduced, and the double advantages of energy conservation, consumption reduction and environmental protection are achieved.

The invention discloses an absorption type combined cooling heating and power system based on a hydrogen fuel cell, the combined supply system comprises a hydrogen fuel cell unit, an organic Rankine cycle subsystem, a Kalina cycle subsystem and a lithium bromide absorption type refrigeration subsystem, the combined supply system utilizes the hydrogen fuel cell unit to carry out electrochemical reaction to generate electric energy, meanwhile, tail gas waste heat generated by the hydrogen fuel cell unit is used as driving force to drive the subsystems to perform power generation, heating or refrigeration functions; an intermediate heat exchanger is further arranged in each subsystem and used for improving the heat efficiency of each subsystem. According to the system, high-concentration hydrogen is provided for the anode of the hydrogen fuel cell through methane reforming hydrogen production, the output of the hydrogen fuel cell is improved, waste heat of the hydrogen fuel cell system is used for supplying power and heat to a user, meanwhile, the refrigeration effect needed by the user is provided, and the comprehensive utilization efficiency of energy is improved.

The invention discloses a process for directly synthesizing dimethyl ether (DME) by taking urban organic wastes as raw materials, preparing synthesis gas (H2, CO and CO2) through gasification and efficiently utilizing residual heat and components. The synthesis gas firstly passes through a Kalina cycle system to recover waste heat and generate power, then the hydrogen content is increased through water vapor shift, and CO2 is captured through a chemical adsorption method to obtain high-purity hydrogen. And the captured CO2 and hydrogen are mixed, preheated and compressed, and then enter a reactor to generate DME, methanol and water under the action of a catalyst. After the reaction product is cooled and subjected to gas-liquid separation, unreacted gas is recycled; and rectifying the liquid-phase product to obtain a DME product, and recycling methanol for reproduction.

The invention discloses a temperature control method and system driven by solar energy and process waste heat. Comprising the steps that solar energy is collected and used as refrigeration energy input of the system; process waste heat energy is collected, process gas is subjected to Kalina cycle to generate electric energy to drive a compressor, or ammonia water is adopted for direct absorption; and the solar energy and / or the process waste heat energy are / is used for providing a low-temperature cold source for temperature control for the air cooler or the water cooler, so that accurate control over the outlet temperature of the air cooler or the water cooler is achieved. According to the invention, the effects of system stability, safe production, energy conservation and emission reduction in the industrial process can be improved.

The invention discloses an ammonia-hydrogen coupled distributed comprehensive energy supply system and method. According to the invention, the flue gas waste heat of a hydrogen ammonia gas turbine and a high-temperature direct ammonia solid oxide fuel cell (DA-SOFC) is recycled in a gradient manner, and the flue gas hot water type lithium bromide unit, the organic Rankine cycle, the four-step copper chloride cycle, the Kalina cycle and the like are sequentially adopted for carrying out gradient utilization on the waste heat with different temperature grades; the whole utilization process relates to full-chain waste heat recovery from high temperature to medium and low temperature, so that the energy utilization efficiency is greatly improved compared with that of a traditional system; meanwhile, by means of the recovery system, cold, heat, electricity and hydrogen multi-energy combined supply is achieved, and the energy self-sufficiency rate of the user side is remarkably increased. In addition, ammonia hydrogen energy serves as the core, no fossil energy is involved in the whole chain, and the whole system can achieve near-zero emission of carbon.

The application discloses a biomass fuel-solid oxide fuel cell comprehensive energy system with a CO2 capture function, which comprises a top circulation system and a bottom circulation system; the top circulation system comprises a solid oxide fuel cell, the cathode inlet of the solid oxide fuel cell is communicated with external air, the anode inlet of the solid oxide fuel cell is communicated with biomass gas and water, the cathode outlet of the solid oxide fuel cell is communicated with the permeation side of a water-gas displacement membrane reactor, and the anode outlet of the solid oxide fuel cell is communicated with the supply side of the water-gas displacement membrane reactor; the supply side of the water-gas displacement membrane reactor is communicated with a combustion chamber, and the combustion chamber is directly connected with external oxygen; the bottom circulation system comprises a transcritical carbon dioxide cycle, a Kalina cycle, a humidification-dehumidification device and an organic Rankine cycle; the solid oxide fuel cell tail gas waste heat and liquefied petroleum gas cold energy can be recycled in stages, and the joint supply of fresh water, carbon dioxide, electric power, cold energy and other energy and substances can be ensured.

The roller kiln double-heat-source waste heat recovery Kalina circulation power generation system comprises a kiln body, one end of the kiln body is arranged to be a production waste gas discharge end, the other end of the kiln body is provided with a cooling waste gas discharge end, and a waste gas treatment mechanism is arranged between the production waste gas discharge end and the cooling waste gas discharge end of the kiln body. The waste gas treatment mechanism comprises a flue gas electrostatic dust collector arranged at the production waste gas discharging end and a cooling waste gas induced draft fan arranged at the cooling waste gas discharging end, a Kalina power generation assembly is arranged between the gas discharging end of the flue gas electrostatic dust collector and the gas inlet end of the cooling waste gas induced draft fan, and a cooling mechanism is arranged at the heat regeneration end of the Kalina power generation assembly; and connecting pieces for mutually connecting the waste gas treatment mechanism, the Kalina power generation assembly and the cooling mechanism are arranged among the waste gas treatment mechanism, the Kalina power generation assembly and the cooling mechanism. According to the roller kiln double-heat-source waste heat recovery Kalina circulating power generation system, kiln head smoke and kiln tail cooling waste gas of a kiln are recovered at the same time, so that waste heat resources of the roller kiln are fully utilized, and energy consumption and environmental pollution are reduced.

The invention discloses an integrated energy system, and mainly relates to the technical field of energy utilization. Comprising an SOFC / GT module, a TCPC circulation module, an LNG cold energy recovery module, a gas-fired boiler module, a Kalina circulation module, an air source heat pump module, a solar photovoltaic photo-thermal module, an energy utilization module and an electricity management center. The comprehensive energy system for coupling the gas-fired boiler with the air source heat pump based on the solid oxide fuel cell, solar energy storage and LNG cold energy utilization is provided, the output energy forms are diversified, and through coupling of multiple modules, energy supply redundancy can be reduced, the utilization rate of equipment in the system can be increased, and the energy supply economical efficiency of the whole system can be improved.

The invention provides a system utilizing liquefied natural gas cold energy and gas turbine waste heat and an operation method, in the system, a gas turbine heat regenerator is connected with a Kalina cycle heater, and the Kalina cycle heater is connected with a first organic Rankine cycle heater; high-temperature fuel gas subjected to heat exchange in a heat regenerator of the gas turbine sequentially enters a Kalina cycle heater and a first organic Rankine cycle heater to provide heat for bottom cycle; the organic Rankine cycle condenser is connected with the Kalina cycle condenser, and liquefied natural gas sequentially enters the organic Rankine cycle condenser and the Kalina cycle condenser to condense corresponding working media. The system can efficiently and reasonably utilize exhaust waste heat energy of the regenerative gas turbine and cold energy in the gasification process of the liquefied natural gas, waste heat recovery is achieved through stepped utilization, the energy utilization rate is increased, and waste of exhaust heat of the gas turbine and the cold energy of the liquefied natural gas is reduced.

The application discloses a kind of based on kalina cycle's work heat exchange network optimization method, belong to work heat exchange network technical field, including S1 obtain process stream parameter, the property parameter of kalina cycle and other economic data;S2 by comparing the import and export temperature and import and export pressure of stream, the stream is classified;S3 the heat capacity flow rate and enthalpy of each stream are calculated;S4 construct work heat exchange network and the mixed integer nonlinear programming model (including objective function and constraint condition) of kalina (kalina) cycle coupling;S5 with annual total cost TAC minimization as objective function, utilize solver to solve model, obtain optimal work heat exchange network structure and operating parameter.The application adopts above-mentioned one kind based on kalina cycle's work heat exchange network optimization method, can determine optimal heat integration scheme, work exchange configuration and power generation scheduling strategy, realize multi-energy collaborative optimization, to significantly improve the economy and energy efficiency of system.

The present application belongs to the technical field of ocean energy utilization, and particularly relates to a marine temperature difference energy cogeneration system and method capable of adjusting medium concentration. The present application combines ammonia-water Kalina cycle power generation technology and heat pump heating technology, sets up a heat and power cogeneration system with an ammonia-water Kalina cycle power generation unit, a concentration adjusting unit and a heat pump heating unit, absorbs surface seawater heat by the ammonia-water Kalina cycle power generation unit to generate power, and supplies heat by the ammonia-water heat pump cycle. According to the characteristics that the high-temperature surface seawater temperature fluctuates greatly with climate time, the valve opening and closing state of the system is adjusted according to the change of the high-temperature surface seawater temperature, the ammonia gas medium is controlled to enter or lead out of the Kalina power generation unit to change the medium concentration of the Kalina cycle power generation unit, the efficient and reasonable utilization of marine temperature difference energy is realized, the energy comprehensive utilization efficiency of the marine temperature difference energy system is improved, and the carbon emission and the influence on the environment are reduced.