18 results about "Exothermic process" patented technology

The present invention relates to an exothermic process for producing metal oxides or metalloid oxides, comprising introducing metal and / or metalloid precursors into a flame formed by burning a gas mixture comprising oxygen and hydrogen, at least a portion of the hydrogen being obtained from the electrolysis of water or an aqueous solution using electrical energy obtained at least in part from a renewable energy source, and at least a portion of the thermal energy of the flame being transferred by at least one exchanger to a first heat transfer medium, thereby heating the first heat transfer medium to a maximum temperature in the range between 80°C and 150°C.

The utility model provides a heat accumulating type high-temperature air continuous generating device, and particularly relates to the technical field of high-temperature gas generating equipment. The generating device comprises a shell, a door stop mechanism, a heat accumulator assembly, an electric push rod and a fixed bottom plate, the electric push rod is adjusted to stretch out and draw back to drive the door stop mechanism to ascend and descend, and the door stop mechanism is matched with the upper door hole plate and the lower door hole plate to achieve communication or disconnection between the high-temperature smoke inlet channel and the high-temperature air outlet channel and between the low-temperature smoke outlet channel and the low-temperature air inlet channel and the heat accumulator assembly. The device is simple in structure and reasonable in design, regular alternation of the high-temperature flue gas inlet and the high-temperature air outlet is not needed, in the using process, the high-temperature flue gas inlet and the high-temperature air outlet are fixed, regular exchange of the heat storage process and the heat release process only occurs in the device, and the device is more convenient.

The invention belongs to the technical field of combined heat and power generation units, and particularly relates to a combined heat and power generation unit peak regulation system with an ultrahigh-temperature heat pump coupled with fused salt energy storage. According to the technical scheme, in the heat storage process, a combined heat and power generation unit operates under the lowest load working condition, a boiler is in the lowest stable combustion load, a certain amount of main steam is extracted to heat fused salt, sensible heat of the main steam is stored in the fused salt, and the main steam obtained after heat exchange is decompressed through a pressure reducing valve and then supplied to low-pressure steam; meanwhile, low-temperature steam serves as a low-temperature heat source in the ultra-high-temperature heat pump system with air as a circulating medium, steam flowing out of a boiler low-temperature reheater enters a low-temperature heat exchanger to heat the air, the steam obtained after heat exchange continues to enter a boiler high-temperature reheater to absorb heat to become reheated steam, and then the reheated steam enters a steam turbine intermediate-pressure cylinder to do work; meanwhile, a motor in the ultra-high-temperature heat pump system can consume the cogeneration unit to generate power, and the purpose of zero-load output is achieved. In the heat release process, heat stored by the fused salt is released into feed water to generate high-temperature and high-pressure steam and reheat steam which enter a high-pressure cylinder and an intermediate-pressure cylinder of a steam turbine to do work, and the load rising rate and the peak power generation capacity of the unit are improved; and meanwhile, part of the generated high-pressure steam and low-pressure steam are supplied externally, so that the requirement of industrial steam is met. The problems that in the peak regulation process of the cogeneration unit, the peak regulation capacity is small, and the boiler operation safety and external supply industrial steam parameters under the low load are limited are solved.

A process for recycling plaster waste from the general public, the process comprises a step (S1) for sorting the solid waste in order to obtain a portion (A) known as gypsum, and a portion (B) known as reject; a step (S2) of generating fuel from at least part of the portion (B) of rejects by an exothermic process; a step (S3) for generating anhydrite from at least part of the gypsum portion (A); the process further comprising the recovery of at least part of the heat (C) generated by the exothermic process, in that the step (S3) of generating anhydrite comprises the heating of the at least part of the portion (A) of gypsum produced from the at least part of the heat (C).

The invention provides a Carnot battery system coupling thermochemical energy storage and sensible heat storage and an operation method, and relates to the technical field of energy storage. The system comprises a thermochemical energy storage unit, a sensible heat storage unit, an energy storage loop unit and an energy release loop unit, the thermochemical energy storage unit comprises an endothermic reactor and an exothermic reactor; the sensible heat storage unit comprises a first cold heat storage medium tank, a solar heat collection tower and a heat storage medium tank; the energy storage loop unit comprises power generation equipment, a first compressor, a first high-temperature heat exchanger, a first heat regenerator and a first expansion machine; the energy release loop unit comprises a second high-temperature heat exchanger, a second heat regenerator, a second expansion machine, a second compressor and a heat storage medium heat exchanger. According to the scheme, the energy storage density can be improved, the energy storage efficiency is improved, and the occupied area of the heat storage medium is reduced. In addition, due to the fact that the reaction temperature is stable in the heat absorption and heat release processes corresponding to thermochemical heat storage, it can be guaranteed that the temperature of the circulating working medium entering the inlet of the expansion machine is stable.

The application provides a regenerative heat cycle and an intermediate regenerative mechanical compression heat pump, and belongs to the technical field of thermodynamics and heat pump. The regenerative heat cycle is a closed process composed of eight processes of a certain mass of circulating working medium in sequence, namely, a low-temperature heat source heat absorption process 12, a pressure increasing process 23, a circulating working medium heat absorption process 34, a pressure increasing process 45, a high-temperature heat source heat release process 56, a pressure decreasing process 67, a circulating working medium heat release process 78 and a pressure decreasing process 81. The heat release of the process 78 satisfies the heat absorption of the process 34. Based on the regenerative heat cycle, the corresponding intermediate regenerative mechanical compression heat pump is constructed.

The invention belongs to the technical field of epoxy insulating materials, and particularly relates to a high-toughness and high-heat-resistance epoxy resin insulating material based on chain extension-cyanate compound modification and a preparation method of the high-toughness and high-heat-resistance epoxy resin insulating material. In the preparation method provided by the invention, the epoxy resin is subjected to chain extension by using the chain extender, and then the epoxy resin is mixed with the cyanate ester and the curing component for curing to obtain the epoxy resin insulating material; a high-flexibility cross-linked network constructed by chain extension modified epoxy resin is matched with a rigid triazine ring formed by curing cyanate ester, so that the comprehensive properties such as mechanical properties, thermal stability and electrical properties are synergistically improved; meanwhile, after the bisphenol type epoxy resin is subjected to chain extension modification, the curing heat release process is smoother in the curing process, the curing reaction kinetics is adjusted, and the structural defects are improved; the low-temperature gradient curing, the medium-temperature gradient curing and the high-temperature gradient curing are beneficial to construction of a more ordered and compact network structure; therefore, the technical problem of low comprehensive performance of an epoxy resin insulating material in the prior art is solved.

The invention relates to a process method for extracting vanadium from vanadium titano-magnetite, and belongs to the technical field of hydrometallurgy. In order to solve the technical problems of low production efficiency and high energy consumption caused by material sintering, equipment bonding, forced matching and returned material adding due to concentrated oxidation heat release of low-valence substances in the existing vanadium slag roasting process, the invention provides the method for pre-oxidizing the high-temperature vanadium slag in an atmosphere with specific oxygen concentration (5-100%) after vanadium is extracted from a converter, and the high-temperature vanadium slag is subjected to heat preservation for 0.5-60 hours at the temperature of 500-1200 DEG C for pre-oxidation. Low-valence ions such as Fe < + > and V < + > in the vanadium slag are fully converted into Fe < + > and V < 5 + > through pre-oxidation, spinel structure decomposition is promoted, and phase conversion is achieved. Carrying out crushing, iron removal and ore grinding on the pre-oxidized vanadium slag until the particle size is 1t; after the thickness is 0.2 mm, mixing with a calcium salt additive according to a CaO / V2O5 mass ratio of 0.3-1, and roasting at 800-950 DEG C for 30-360 minutes. Through the pre-oxidation step, the violent oxidation heat release process is dispersed, the problem of heat accumulation in the roasting process is fundamentally solved, and the production efficiency and economic benefits are remarkably improved.

The present invention relates to an exothermic process for producing metal oxides or metalloid oxides, wherein a metal precursor and / or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a portion of the hydrogen and at least a portion of the oxygen are obtained from the electrolysis of water or an aqueous solution using electrical energy obtained at least in part from a renewable energy source, wherein water (HO) is introduced into the flame, and wherein the total molar ratio TRON of oxygen gas to nitrogen gas, TRON=n(O):n(N), of all streams introduced into the flame prior to ignition is TRON≧0.25 and ≦1.

This invention discloses a thermochemical heat storage device, comprising a tank with a circulating water inlet and a feed inlet on one side of its top, and a water outlet and a discharge outlet on the bottom side away from the circulating water inlet and feed inlet; a stirring structure including a central rotating shaft, a planetary carrier, and a planetary stirring frame rotatably mounted in the tank; the planetary stirring frame being arranged parallel to the central rotating shaft, and the two ends of the planetary stirring frame and the central rotating shaft being connected through the planetary carrier; the planetary stirring frame and the central rotating shaft being connected by gear transmission; the central rotating shaft having a hollow structure with a steam inlet at one end and a nozzle on the central rotating shaft; and a hot steam recovery structure, the steam inlet of which is connected to the tank. This invention adopts a multi-layer structure design, with the tank wall respectively equipped with a flow heat exchange layer and an electromagnetic heating coil, responsible for carrying away heat during the exothermic process of calcium-based thermochemical reaction and providing heat for the endothermic thermochemical reaction, respectively, realizing integrated heat storage and release.

The invention discloses a light-weight movable heat source device based on topological optimization fins and a control method. The device comprises an external box body assembly, a heat preservation assembly, a phase change heat storage box body, a heat exchange channel, topological optimization heat exchange fins, a phase change heat storage material, an electric heating assembly, a temperature monitoring assembly, an air supply assembly and a control panel system. The heat exchange fins are of a material distribution structure obtained through topological optimization with heat exchange amount maximization and structural mass minimization as targets, and the heat exchange fins and the heat exchange channels are integrally formed. The heat exchange channel is arranged in a snake shape, a honeycomb structure is arranged in the heat exchange channel, a sectional type phase change area is formed, and the heat exchange area is increased. The control panel system adjusts the operation states of the electric heating assembly and the air supply assembly according to the temperature signal and the external electricity price signal. According to the system, collaborative optimization of the heat exchange performance and light weight is achieved, the unit mass heat storage and release capacity and the system operation stability are improved, the controllability of the heat charging and discharging process is enhanced, and good moving portability and vehicle-mounted adaptability are achieved.

The invention provides a multi-branch fractional condensation heat release heat pump circulation system and an operation method thereof, and the system comprises a heat absorption unit which is used for enabling a heat pump working medium to absorb heat and evaporate from a low-temperature heat source; the gradient heating module comprises at least two heat release branches corresponding to different condensing pressures, and each heat release branch is configured to enable a heat pump working medium to release heat to a heated medium under the corresponding condensing pressure; the condensation pressure / temperature of the at least two heat release branches and the evaporation pressure / temperature of the heat absorption unit are distributed in a gradient mode, and the heat release branches sequentially conduct gradient heating on a heated medium according to the sequence of the condensation temperatures from low to high. Through the reasonable design of the gradient heat release temperature, the condensation heat release process is close to the heating curve of the heated medium section by section in the temperature domain, so that the irreversible loss of the condensation heat release process is obviously reduced on the whole, and the heating efficiency of the system is improved.

High-temperature direct evaporation for the immediate production of hydrogen without electrolysis, degradation of organic and inorganic chemical compounds, selection according to molecular weight, in a thermodynamic process, using sustainable solar energy, selection of liquids and gases, such as evaporation and selection of nuclear materials, generation of endothermic and exothermic processes.

The invention relates to the technical field of hydrogen storage, in particular to a multistage solid hydrogen storage system and method based on photo-thermal regulation and control and temperature difference utilization, and the system comprises a photo-thermal conversion cavity, at least one part of the photo-thermal conversion cavity is a light-transmitting window, the inner surface of the photo-thermal conversion cavity is provided with a solar energy absorption coating, and the solar energy absorption coating is used for receiving and converting solar radiation energy into heat energy; and the first-stage hydrogen storage container is arranged in the photo-thermal conversion cavity so as to directly or indirectly receive heat. According to the system, free solar energy is directly used as a primary heat source in the hydrogen desorption process, and the night low-temperature environment is used as a natural cold source in the hydrogen absorption process, so that the traditional electric heating and mechanical refrigeration modes are fundamentally abandoned, the operation energy consumption is greatly reduced and even eliminated, and the energy consumption is reduced. Meanwhile, the hydrogen desorption and heat absorption process of the system is coupled with solar heating in the daytime, the hydrogen absorption and heat release process is coupled with environment cooling at night, and intelligent switching between natural heating and natural cooling is achieved.

The invention relates to the technical field of exhaust steam recovery devices, and discloses a self-adaptive waste heat recovery device based on a phase change heat accumulator, the side surface of the self-adaptive waste heat recovery device is provided with a heating medium inlet and a gas outlet, and the lower part of the self-adaptive waste heat recovery device is provided with a condensate outlet; the tube pass unit comprises a flow collecting box which is divided into a first flow collecting cavity and a second flow collecting cavity by a partition plate, the first flow collecting cavity is connected with a refrigerant inlet pipe, and the second flow collecting cavity is connected with a refrigerant outlet pipe; the heat exchange tubes are arranged in the shell and comprise the first heat exchange tubes and the second heat exchange tubes. The phase change heat accumulator is introduced as a stable intermediate heat source, so that the device can output a continuous and stable heating effect. Even if the flow or temperature of exhaust steam of the deaerator fluctuates, the heat accumulator can be buffered and adjusted through the heat accumulation and heat release process of the heat accumulator, and drastic changes of the temperature of downstream demineralized water are effectively stabilized, so that the stability of the water inlet working condition of the deaerator is guaranteed, and the operation quality and efficiency of the whole thermodynamic system are improved.

A thermal management system for an exothermic process includes cooling units, each including a hot coolant port through which coolant heated by the exothermic process flows and a cold coolant port through which the coolant that has been heat reduced by the cooling units flows. A pair of mounting rails have respective interior chambers that are in fluid communication with corresponding coolant ports formed on the respective mounting rails. Conduits interconnect the coolant port of one of the mounting rails to the hot coolant port of each of the cooling units and the coolant port of the other one of the mounting rails to the cold coolant port of each of the cooling units.

The application relates to the technical field of steam exhaust recovery devices, and discloses a self-adaptive waste heat recovery device based on a phase change heat accumulator, which is provided with a heat medium inlet and a gas outlet on the side surface and is provided with a condensate outlet at the lower part; one tube pass unit comprises a collecting box which is divided into a first collecting cavity and a second collecting cavity by a partition plate, the first collecting cavity is connected with a refrigerant inlet pipe, and the second collecting cavity is connected with a refrigerant outlet pipe; a plurality of heat exchange pipes are arranged in the shell, and the heat exchange pipes comprise first heat exchange pipes and second heat exchange pipes. The application can continuously and stably output heating effect by introducing the phase change heat accumulator as a stable intermediate heat source. Even if the flow or temperature of the deaerator exhaust steam fluctuates, the heat accumulator can buffer and adjust through the heat storage and heat release process, effectively suppresses the sharp change of the downstream desalted water temperature, thereby guaranteeing the stability of the deaerator water working condition and improving the operation quality and efficiency of the whole thermal system.

This invention specifically relates to a liquid hydrogen multiphase flow loop thermal management system, belonging to the field of superconducting magnet thermal management technology. This invention incorporates nanoscale magnetic catalyst particles into the liquid hydrogen working fluid. On one hand, the nanoscale magnetic catalyst particles act as a catalyst, stimulating the secondary hydrogen conversion reaction during the evaporation and condensation of the hydrogen working fluid. The endothermic and exothermic conversion process occurs simultaneously with the phase change process. On the other hand, the nanoparticles can increase the overall heat capacity of the working fluid, thus improving the heat carrying capacity per unit mass of the working fluid from two perspectives. This invention includes two infusion valves and an injection valve in the adiabatic section. By controlling the flow direction and the filtration effect of the filter, the concentration of the nanoscale magnetic catalyst particles is adjusted, thereby changing the heat carrying capacity of the working fluid and thus regulating the start-up performance and heat transfer limit of the heat pipe.