816results about How to "Realize cascade utilization" patented technology

The invention discloses a microgrid operation optimizing method by considering combined supply of cooling, heating and power with a stored energy operation strategy.The microgrid operation optimizing method comprises the following steps of: establishing a CCHP (combined cooling heating and power) microgrid optimizing model; constructing a target optimizing function with a target of lowest generating cost under a microgrid grid-connected operation state; according to the established target optimizing function, comprehensively considering load level of front and time periods with an output trend of each micro power supply, and determining the operation principle of an energy storage unit and a fuel battery to determine the best operation mode of the whole CCHP system in a scheduling period. The microgrid operation optimizing method disclosed by the invention has the beneficial effects that the microgrid electricity selling profits can be effectively increased for energy storage optimization, obvious advantages are provided in lowering the operation cost of the microgrid; the energy resource utilization rate of the stem can be improved and the energy gradient utilization can be realized in comparison with the conventional heat-engine plant and thermal power plant, so that reference is provided for energy saving of the power system; moreover, the energy is saved and the emission is reduced, pollution of air pollutants is greatly reduced, and significance is achieved in improving environmental benefits.

The invention discloses a regional integrated energy system operation robust optimization method considering electricity-to-gas conversion and uncertainty, and the method comprises the steps: carryingout the detailed modeling of an electricity-to-gas conversion process according to the principle of an electrochemical reaction, and analyzing the coupling relation between different energy forms ina matrix mode based on an energy center model; establishing a regional comprehensive energy system operation optimization model considering the uncertainty of various load prediction powers, and establishing a two-stage robust optimization model according to a polyhedral uncertain interval; and decomposing the two-stage robust optimization model into a main problem and a sub-problem, converting the sub-problem into an optimization problem of a single target, and carrying out iterative solution to obtain a comprehensive energy system robust optimization scheme. According to the method, the potential of complementary mutual relief and flexible scheduling among multiple energy forms is fully excavated, wind curtailment can be reduced, and the operation economy and flexibility of the comprehensive energy system are improved; and the contradiction between the operation risk and the cost can be coordinated according to the actual condition of the regional integrated energy system.

The invention relates to a heating device for improving heating quality of steel billets and a using method thereof. The heating device comprises a heating furnace, a heat storage system blower, a flat flame system blower, a combustion-supporting air pipeline, a gas pipeline, a heat storage system draught fan, an air heat exchanger, a gas heat pipe exchanger, a smoke exhaust pipeline and a chimney. 2-4 ignition burners are arranged at a preheating section of a heating furnace, and 12-30 pairs of heat storage type burners and 4-12 flat flame burners are respectively arranged at a heating section and a soaking zone. The using method comprises the following steps of reasonable distribution of combustion-supporting air and gas flow rate of the heat storage type burners and the flat flame burners, sectional configuration of furnace temperature and heating time, preheating of combustion-supporting air and gas temperature through a high-temperature smoke gas and furnace tail gas in grades, alternative furnace feeding of cold and heat steel billets, intermittent movement of the steel billets, and vaporization cooling of the steel billets. The flow field in the furnace is modified through the system, the optimal configuration of flow rates of air and gas in the burner is realized through reasonable arrangement of gas and air pipeline systems, and the waste heat of high-temperature smoke gas of the heating furnace is gradiently utilized, thus the in-furnace time is shortened, the uniformity of heating the steel billets is improved, and the high-efficiency heating of the steel billets is realized.

The invention belongs to the field of supercritical water treatment, and discloses a method for recovery and cascade utilization of waste heat of a supercritical water treatment system of waste organic substances. The method comprises the following steps that: for fluid overflowing out of the reaction outlet end of a reactor, one part of the fluid flows through a heating coil pipe in a desalting and deslagging device first, and then flows through a heat exchanger group to preheat materials after strong brine in the desalting and deslagging device is heated; another part of the fluid is used for preheating a first path of evaporation wall water; then two parts of the fluids are mixed together, and after vapor-liquid separation, the liquid flows through a hot bath type liquid oxygen vaporizer to vaporize liquid oxygen, and finally flows back into a first liquid collection box; and the fluid overflowing out of the upper outlet end of the desalting and deslagging device flows through a first heat exchanger to preheat oxygen first and then preheat a second path of the evaporation wall water, and after the vapor-liquid separation, the liquid flows back into a second liquid collection box. Thus, the sufficient recovery and the cascade utilization of the waste heat are achieved.

The invention provides a gridding coordinated planning method of composite energy multi-energy complementation. The method comprises following steps of acquiring current situations of the power grid and energy resource utilization condition information; initial dividing grids in a demonstration area, predicting load and composite energy demands, and correcting a grid division scheme of a geographical information system; formulating constraints and net rack planning rules, constructing a composite energy coordinated development basic model, and formulating a target net rack coordinated planningscheme; formulating a target net rack scheme of each level year and each long-range year, and carrying out composite energy coordinated planning operation management service platform construction; and carrying out economical benefit estimation and providing a demonstration region power distribution network composite energy coordinated development operation mode. According to the invention, the park can be quite properly and rationally planned; a composite energy planning optimal scheme can be obtained; by use of the gridding method of the geographical information system, coordinated planningis carried out, and energy interaction and gradient utilization are achieved; the peak adjusting pressure of the power grid is reduced; and the digestion ability for clean energy is improved.

The invention discloses a cooling mode driven by utilizing an urban heat supply network, which belongs to the technical field of cooling modes. In the mode, hot water of the heat supply network is utilized to drive an absorption refrigerator and a solution dehumidifier to cool and dehumidify the place of a user; meanwhile, the water of the heat supply network after driving the cooling and the dehumidification can be used for preheating domestic hot water and further recharging the heat to the underground through a buried pipe so as to gradually reduce the backwater temperature of the heat supply network, and the heat recharged to the underground can be extracted for heat supply in winter. In a power plant, a mode of the combination heating of a condenser, a steam absorption heat pump and a steam-water heat exchanger is adopted to realize the gradual heating of the backwater of the heat supply network. Compared with the conventional distributed cooling mode and centralized cold water supply mode, the mode can utilize spare urban heat supply network resource in a refrigeration season, increase the heat load of a thermal power plant, recycle the waste heat of the circulating water of the power plant, and facilitate cutting down a power peak due to air conditioning load and even saving power.

The invention belongs to the field of energy technology application, particularly relates to a heatpump type gas-fired boiler waste heat recovery unit. The unit comprises an absorption heat pump, a flue gas-water heat exchanger, a flue gas condensation heat exchanger, various connecting pipelines and accessories. The connecting pipelines comprise a first side pipeline, a middle water circulating pipeline and a second side pipeline. First side natural gas as a driving heat source enters a generator of the absorption heat pump and then enters the flue gas-water heat exchanger and the flue gas condensation heat exchanger with smoke exhausted by the gas fired boiler, the natural gas firstly passes through a water side circulating pipeline of the flue gas-water heat exchanger to heat second side return hot water and then exchanges heat with the generator side of the absorption heat pump to be as a low level heat source through the middle water circulating pipeline of the flue gas condensation pipeline, and the heat is transferred to a second side heating network by the absorption heat pump. The unit realizes cascade utilization for flue gas heat, greatly reduces the temperature of exhausted smoke, improves the energy utilization efficiency and is mainly used for gas-fired boiler waste heat recovery in a heating system.

The invention relates to a process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and a system thereof. The method comprises the following steps: (1) carrying out grinding on the raw material lignite; (2) burning one part of coal blocks/powder to produce high-temperature flue gas serving as a heat source and carrying out air separation and dring on the other part of coal blocks/powder requiring to be subjected to quality improvement; (3) in the process of air separation, adopting the high-temperature flue gas from the step (2), carrying out drying, separation and dust removal on the qualified coal blocks/powder conforming to the standard grain diameter after air separation, collecting the qualified coal blocks/powder, sending the qualified coal blocks/powder to the forming process, making the unqualified coal blocks/powder drop in a grinding ventilating device to carry out grinding and drying, then continuously completing deep drying by air separation and repeating the steps, wherein the oxygen content in the flue gas is less than 8 percent; and (4) sending one path of waste gas subjected to air separation and drying to the washing process and returning the other path of waste gas serving as a return tail gas part to the step (2) so as to prepare the high-temperature flue gas and carry out air separation. The process has the advantages of safety, energy saving, environment protection, high efficiency, stability and the like.

The invention discloses a thermodynamic cycle system and method for ammonia water mixed working medium power cooling combined supply. Ammonia water mixture serves as a working medium, and medium-and-low temperature heat serves as a heat source; the thermodynamic cycle system includes a power cycle and a refrigerating cycle; and the power cycle taking the ammonia water mixture as the working medium, the characteristic of temperature-variable evaporation of the working medium is utilized to be excellently matched with a sensible heat source, meanwhile, the temperature-variable condensation of the working medium is utilized to provide heat for the re-boiling process of a tower kettle and the preheating process for partial feeding material of a rectifying tower of the refrigerating cycle. Through the system integration, the high-temperature part of the external heat source is utilized for power cycle, the low-temperature part of the external heat source and the heat extraction of the power cycle are utilized for the refrigerating cycle, the matched temperature and stepped utilization of heat are realized, and compared with the typical dividing system, the performance of the system is improved.

The invention discloses a biomass distributed combined cooling heating and power energy system, and belongs to the technical field of renewable energy. According to the technical scheme, the system comprises a biomass burner (1), a Stirling engine (5), a heat exchanger (10), a generator (14) and an absorption refrigerator (24), wherein flue gas generated by the biomass burner (1) is purified and then enters the Stirling engine (5); generated power is provided for the generator (14) through an output shaft (13) to generate electric energy; generated hot waste gas enters the absorption refrigerator (24) through a hot waste gas pipe (15) for refrigeration and heating; and cooling water passes through the heat exchanger (10), so that air is preheated, and hot water is provided; and therefore, combined cooling heating and power is realized. A biomass fuel is taken as a raw material, the flue gas generated by burning passes through the Stirling engine to generate the power for direct power generation, the hot waste gas passes through the absorption refrigerator for refrigeration and heating, and the air is preheated and the hot water is provided by a heat exchange device, so that cascade energy utilization is realized.

The invention relates to the technical fields of the solar thermal power generation and energy, in particular to a solar energy and methanol fuel chemical-looping combustion power generation system and method used for controlling CO2 emission. The intermediate-low temperature solar thermochemical process and the chemical-looping combustion power cycle are coupled organically to form the system ofthe invention. The system comprises a solar heat collecting-reduction reactor, a solar heat collecting-decomposition reactor, an oxidation reactor, an afterburning combustion chamber, a gas turbine, a steam turbine, an exhaust-heat boiler, a heat exchanger and the like. By using the device of the invention, the graded use of energy resources with different qualities can be realized; the zero-energy separation of CO2 can be realized through simple condensation; the combustion method can reduce the fuel grade to FeO grade, thus reducing the fuel loss in the combustion process and increasing theefficiency of the system; the solar thermochemical reaction is adopted to improve the grade of intermediate-low temperature solar energy; and afterburning is adopted so as to solve the problem that the gas turbine inlet has low initial temperature caused by the limit of the cycle material in the chemical-looping combustion power system.

The invention discloses a comprehensive processing recycling process and device of bromine-contained high temperature flue gas. The comprehensive processing recycling process mainly includes the steps of enabling the high temperature flue gas coming from a high temperature combustor and a second combustor to enter a waste heat boiler for cooling, enabling steam generated by the waste heat boiler to be outwards supplied to users needing the stream for use, enabling the high temperature flue gas to enter a dust removal device so as to remove flying ash in the flue gas, enabling the high temperature flue gas to pass through a flue gas rapid cooling device so that the temperature of the flue gas can be reduced, enabling the flue gas to enter a flue gas cooling device, enabling the sufficiently-cooled flue gas to enter a bromine adsorption device, after the bromine adsorption device is saturated, adopting a small amount of hot air to regenerate adsorption media, enabling high-concentration bromine-contained gas generated by the regeneration to enter a bromine condensing device, enabling the cooled flue gas to be discharged by a chimney, and enabling condensed liquid bromine to be collected by a bromine recycling container which is connected with the bromine condensing device placed in an inclined mode. According to the comprehensive processing recycling process and device of the bromine-contained high temperature flue gas, inorganic bromine in the flue gas is recycled, meanwhile, new waste liquid or new waste residues are avoided, heat energy in the flue gas is recycled to the maximum degree, and the flue gas cooling process is controlled to regenerate dioxin without addition of new chemical reagents.

The invention discloses a system for improving the low-temperature heat source power generation capacity by using an injection pump. In order to increase the operating differential pressure between aturbine and an air cooler, an injection pump is connected in series between the turbine and the air cooler; a steam generator is additionally connected in series behind a first-level steam generator;a water side of the first-level steam generator is connected in series with a water side of a second-level steam generator; a working medium side of the first-level steam generator is connected in series with the turbine, the injection pump, the air cooler and a first working medium pump to form a closed loop; and a working medium side of the second-level steam generator is connected in series with the injection pump, the air cooler and a second working medium pump to form another closed loop. The invention reduces the backpressure of the turbine, increases the operating differential pressureand enhances the working ability. The low-temperature heat source performs secondary heat release in the second-level steam generator, and the steam after heat exchange is used as the working steam ofthe injection pump, thereby realizing the graded use of energy and improving the energy use ratio.

A vehicle-used high-density complex storage system of hydrogen/natural gas dual fuel comprises a vehicle control module, a storage tank with a double-layer structure, and a controller, as well as a natural gas supply pipeline valve module and a hydrogen supply pipeline valve module both connected with the controller, wherein the storage tank with the double-layer structure comprises an outer storage tank, an inner storage tank arranged inside the outer storage tank, and an interlayer; the outer tank is connected with the natural gas supply pipeline valve module to realize refueling, storing and supplying liquefied natural gas; the inner storage tank is filled with a nanopore material; the inner storage tank is connected with the hydrogen supply pipeline valve module to realize refueling, storing and supplying hydrogen fuel; the inner storage tank adopts the cold energy of the liquefied natural gas to provide a low-temperature environment for the storage of hydrogen; through the combination with the nanopore material hydrogen storage material, the hydrogen storage density of the inner storage tank is greatly increased; gasified natural gas of the outer storage tank can serve as a fuel to enter an internal combustion engine, and the dual fuel complex storage system can realize the gradient utilization of the stored energy of the gas fuel, so that the efficiency of energy utilization is greatly increased.

The invention discloses a fused salt heat storage and heat release peak load regulating system for a thermal power generating unit. According to the fused salt heat storage and heat release peak loadregulating system, a fused salt heat storage system, an I-stage fused salt low-temperature heat release system and a II-stage fused salt high-temperature heat release system are additionally arrangedon the basis of the original thermal power generating unit, and therefore peak load regulating of a power grid is realized through heat storage and heat release of fused salt; when the dispatching load of the power grid is decreased, part of high-temperature reheat steam is extracted from an outlet of a boiler reheater and exchanges heat with the fused salt in the fused salt heat storage system, and therefore consumption and utilization of the reheat steam in the electricity utilization off-peak season are completed; when the dispatching load of the power grid is increased, a part of high-pressure feedwater flowing to a high-pressure heater is divided into the I-stage fused salt low-temperature heat release system to exchange heat with the fused salt; and meanwhile, the steam discharge amount of a high-pressure cylinder is increased, part of increased exhaust steam of the high-pressure cylinder is fed into the II-stage fused salt high-temperature heat release system to exchange heat with the high-temperature fused salt, the heated steam enters an intermediate-pressure cylinder to apply work, the amount of the steam entering the intermediate-pressure cylinder and the output of a steam turbine can be increased, and the electric power of the thermal power generating unit can be rapidly increased.

The invention relates to a synergic-purification all-heat-recovery combined heat and power generation system which comprises a heat power plant waste heat utilization system and a heating station, wherein the heat power plant waste heat utilization system is connected with the heating station through a heat supply network return water supply pipeline; and the heat power plant waste heat utilization system comprises an air humidifier, a gas-water thermal tower, a water-to-water heat exchanger, an absorption heat pump, a steam-to-water heat exchanger and a steam condenser. In the heat power plant, the air is humidified to enhance the dew-point temperature of flue gas; the return water temperature is further lowered in the heating station, so that the heat supply network return water is lowered to 10 DEG C and even lower; and the two measures are integrated to recover all the flue gas waste heat and dead steam waste head. Meanwhile, a dosing port is arranged on a flue gas waste heat recovery spray water path, so that the flue gas is cleaned in the waste heat recovery process, thereby achieving favorable denitrification effects. The acidic condensation water is neutralized to achieve the discharge standard, thereby integrating the functions of waste heat recovery and flue gas purification. The synergic-purification all-heat-recovery combined heat and power generation system is suitable for combustible gas heat power plants, biomass heat power plants and the like, and can be further popularized to coal-burning heat power plants and boilers.

The invention discloses an energy Internet construction method for improving energy use efficiency. The method comprises the following steps of constructing an energy Internet architecture physical network, constructing an energy Internet architecture information network, constructing an energy Internet architecture application platform and the like. On a layer of a physical network, energy production equipment, including a wind turbine generator, a photovoltaic power station, a combined cold heat and power supply unit, a ground source heat pump unit and the like, and cooling/ heating equipment, including a lithium bromide unit and the like are configured to carry out energy saving transformation on systems including illumination, water supply, elevators and the like, and the gradient utilization of energy, energy saving and loss reduction are realized. On a layer of an information network, the production, transmission and consumption state of the energy can be subjected to all-aroundsupervision and monitoring on the basis of an intelligent Internet of Things technology so as to realize a target of reducing manpower, lowering cost and improving energy efficiency. On a layer of anapplication platform, the complementary characteristics of a multi-energy supply system is used for coordinating and optimizing the supply of energy, including, coldness, heat, electricity, gas and the lie on the basis of meeting the energy utilization requirement of the user, the consumption of clean energy is accelerated, and the use efficiency of energy is improved.