827 results about "Superheated steam" patented technology

The invention provides a power plant steam extraction energy storage and power generation optimization method and system based on fused salt heat storage, and relates to the technical field of electric power. The extracted steam is introduced into a multi-stage tandem type steam-molten salt heat exchanger group; when the load of the power grid is higher than a preset dynamic threshold value, conveying the high-temperature fused salt to the cascade fused salt-water heat exchanger group by adopting a multi-path parallel fused salt conveying system; in the fused salt-water heat exchanger group, a structure of combining countercurrent flow heat exchange and a spiral heat exchange pipe is adopted, so that the heat exchange efficiency is improved, and superheated steam is generated; the generated high-temperature and high-pressure steam is conveyed to the improved steam turbine with the variable air inlet area, the air inlet area is dynamically adjusted according to the power grid load requirement, and the efficiency of the steam turbine is optimized; the intelligent power grid technology and the demand side response strategy are utilized to realize bidirectional interaction between the power generation end and the power utilization end, and power supply and demand are dynamically balanced.

The invention discloses a boiler combustion strategy optimization method, system, equipment and medium, and relates to the technical field of combustion strategy optimization, and the method comprises the steps: employing a width-adaptive triangular convolutional neural network to establish a prediction model of boiler thermal efficiency, NOx emission and superheated steam temperature; constructing a boiler multi-target combustion optimization intelligent agent, and introducing a maximum entropy parameter to obtain all boiler combustion optimal strategies as a target, and obtaining any strategy of which the value is higher than a threshold value; and based on the combustion strategy, outputting a next state through the trained prediction model, obtaining a reward corresponding to the current state, and performing iterative optimization on the boiler multi-target combustion optimization agent according to the current state, the combustion strategy, the next state and the reward corresponding to the current state. And taking the combustion strategy until the optimal reward is obtained as the optimal boiler combustion strategy. On the premise of guaranteeing the stability of the hot steam temperature, the effects of reducing the emission concentration and guaranteeing the stability of the heat efficiency of the boiler are achieved.

The invention provides a cooking utensil superheated steam system and a temperature control method thereof, and relates to the technical field of steam cooking. The superheated steam system of the cooking utensil comprises the cooking utensil, a steam module, an ultrasonic heating module, a temperature monitoring module, a cooking data acquisition module, a data analysis module, a model prediction module, a display module, a dynamic adjustment heating strategy, a waste heat recovery module and a preheating box. Ultrasonic vibration is used for assisting heating, water molecules rapidly vibrate in a microwave field to generate heat, the waste heat recovery module captures heat generated in the cooking process through a heat exchanger and is used for preheating the next batch of food, the energy utilization efficiency is remarkably improved, energy waste and carbon emission are reduced, the heating strategy is dynamically adjusted, and the energy utilization rate is increased. According to the real-time sensor data and the prediction model, the heating power, the steam flow and the heating time parameters are automatically optimized, unnecessary energy consumption is avoided, and accurate temperature control and energy consumption optimization are achieved.

According to the energy storage coupling heat pump steam generation method and system, the mode that the heat pump device and the energy storage device cooperatively operate is adopted, and efficient and economical steam supply is achieved. The method comprises the steps that high-temperature water is prepared and stored in the off-peak electricity period through the heat pump device, and the high-temperature water is further heated through the energy storage device to generate superheated steam for a user to use. The energy storage device comprises a plurality of energy storage modules, and a heat exchange pipeline of the energy storage device can be switched between a parallel connection mode and a series connection mode through switching, so that deep heat release and flexible regulation and control are achieved. According to the method, the energy storage capacity and heat release power of the energy storage module are dynamically adjusted, enthalpy increment distribution of the heat pump and the energy storage device is optimized in combination with load prediction, and diversified steam requirements are met. And meanwhile, preheating or dynamic supplement is conducted on the energy storage module through the heat pump device, waste heat recovery is achieved, and the energy efficiency is improved. According to the method, the operation cost is remarkably reduced, the capacity of the system for adapting to load fluctuation is enhanced, and the method is suitable for industrial steam use scenes and has the advantages of being efficient, stable and flexible.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing gas supply system which comprises a first gas supply subsystem and a second gas supply subsystem, the first gas supply subsystem comprises a first pipeline, a first check valve, a first reaction mechanism, a second reaction mechanism and a degassing structure, and the first reaction mechanism, the second reaction mechanism and the first pipeline are sequentially connected; a reactant is arranged in the first reaction mechanism, a catalyst is arranged in the second reaction mechanism, and the first check valve and the degassing structure are arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline; when the gas source is cut off, the reactant and the catalyst are subjected to chemical reaction in the second reaction mechanism to generate water vapor and oxygen, the degassing structure is used for consuming the oxygen and generating superheated steam, and the superheated steam enters the hydrostatic bearing. The air supply system for the hydrostatic bearing provides the pure water vapor working medium for the hydrostatic bearing, so that the normal operation of the hydrostatic bearing is ensured, and the hydrostatic bearing is prevented from being damaged.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing air supply system capable of improving transient bearing capacity, which comprises a first air supply subsystem and a second air supply subsystem, the first gas supply subsystem comprises a first pipeline, a first switch valve, a reaction mechanism and a degassing mechanism, reactants are arranged in the reaction mechanism, the reaction mechanism is communicated with the first end of the first pipeline, the second end of the first pipeline is used for being communicated with the hydrostatic bearing, and the first switch valve and the degassing mechanism are both arranged on the first pipeline; the degassing mechanism is positioned between the reaction mechanism and the first switch valve; the second air supply subsystem is used for communicating with the hydrostatic bearing through a first pipeline; the first switch valve is used for being opened under the condition that the hydrostatic bearing is impacted, so that water vapor in the hydrostatic bearing enters the reaction mechanism to be chemically reacted with reactants, and water vapor and oxygen are generated; the degassing mechanism is used for consuming oxygen and generating superheated steam. Normal operation of the hydrostatic bearing can be guaranteed, and the hydrostatic bearing is prevented from being damaged due to rotor collision.

The invention discloses a pyrolysis device and method with instantaneous high temperature rise and directional regulation and control, and the method comprises the following steps: putting a pyrolysis substance into a pyrolysis reaction vessel, introducing inert gas into a superheated steam inlet, and emptying air in the pyrolysis device; superheated steam is introduced into the superheated steam inlet, and a pressure regulating valve is regulated to enable the pressure in the tubular furnace to reach the required pressure; and collecting and treating the pyrolysis product at the pyrolysis product outlet. According to the method, the boiling point of the added water vapor is regulated and controlled by controlling the pressure of a reaction section according to a Clausius-Claelong equation, sufficient heat is provided for pyrolysis substances at a high-gasification latent heat speed of the water vapor, short-time efficient pyrolysis is realized, and production of by-products in the process is reduced compared with slow heating.

The invention discloses a steam compression system and a control method thereof. The steam compression system comprises a flash tank, at least one stage of steam compressor and a first water circulation pipe. The flash tank is used for enabling the steam generation water heated to the specified flash temperature to be subjected to flash evaporation under the negative pressure condition in the tank to become low-pressure steam; the steam compressor is used for compressing the low-pressure steam into superheated steam of which the saturation pressure is target condensing pressure; and the first water circulating pipe is used for guiding water of a target water source to motors of the steam compressors at all levels and exchanging heat with heat dissipation mechanisms of all the motors, and the water subjected to heat exchange returns to the target water source. Compared with the prior art, heat at the motor is recycled through water circulation, so that the enthalpy value of water for steam generation is increased, energy consumption needed by steam generation is reduced, and the comprehensive energy efficiency of the system is improved.

The invention discloses a high-pressure combustion combined heat and power generation energy storage system and method for hydrogen and oxygen production through electrolysis, and relates to the field of hydrogen energy storage. After the electrolytic cell produces high-pressure hydrogen and oxygen, the high-pressure hydrogen and oxygen are stored in the hydrogen / oxygen storage tank, the system can operate in a hydrogen / oxygen mode, and in the oxygen mode operation, the hydrogen and oxygen steam mixed gas from the oxygen storage tank and the hydrogen / oxygen evaporation compressor are combusted in the high-pressure combustion chamber to generate superheated steam, and then the superheated steam enters the expansion turbine to do work; due to excessive oxygen, dead steam after acting is separated into two working media through a gas-liquid separator, that is, gas enters a cooler to be cooled and then returns to a combustion chamber through a hydrogen / oxygen evaporation compressor, drainage water generated after liquid enters a heat supply heat exchanger is pressurized through a water pump and then enters a high-temperature combustion chamber, and therefore clean utilization of hydrogen energy and cyclic regeneration of the working media are achieved. The system can realize high power generation efficiency and excellent environmental protection performance, and is suitable for regions requiring stable consumption of fluctuating renewable energy sources, power and heat supply and the like.

The invention relates to the technical field of nuclear energy comprehensive utilization, and discloses an energy system with nuclear energy as base load and a control method.The system comprises a nuclear power secondary loop system, a renewable energy system, an energy storage system, a steam supply system, a seawater desalination system, a hydrogen production system, a heating system and a refrigeration system; the heat of the reactor core enters the steam generator to generate main steam; the photovoltaic module and the wind turbine generator set carry out renewable energy power generation; a storage battery is used for storing renewable energy electric power, and a molten salt heat storage system is used for storing heat energy; the steam supply heat exchanger is used for heating fresh water produced by the seawater desalination system to obtain superheated steam; the low-temperature multi-effect evaporation system and the reverse osmosis membrane method seawater desalination system generate fresh water; the electrolytic bath generates hydrogen and oxygen; the heating system and the refrigerating system are used for refrigerating in summer and heating in winter, and nuclear energy, wind energy, solar energy and the like are coupled and utilized in a stepped mode.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

The embodiment of the invention provides a cascade heating superheated steam generation system and a control method thereof, and belongs to the technical field of energy engineering and thermal power. The system comprises: an evaporation device provided with a plurality of heat exchangers, wherein the evaporation device is used for treating preheated produced water into wet saturated steam; wherein the series-parallel connection relation between the heat exchangers in the evaporation device is adjusted based on real-time heat supply demand information; the steam conversion device is used for converting the wet saturated steam into superheated steam for steam injection; the control device is used for determining the serial numbers of the heat exchangers participating in heat exchange and the series-parallel connection relation of the heat exchangers participating in heat exchange based on the real-time heat supply demand information; the fused salt conveying device sequentially passes through the steam conversion device and the evaporation device and is used for providing a heat source for the steam conversion device and the evaporation device. According to the scheme, the method adapts to complex heat supply demand scenes, and therefore an efficient, flexible and intelligent solution is provided for thick oil steam injection.

Provided is a method of manufacturing a glass article, including a molding step of heating a glass base material with a superheated steam to soften the glass base material, and deforming the softened glass base material.

The invention discloses a small micro-superheated steam through-flow type gas condensation boiler, belongs to the technical field of boilers, and solves the problems that the current small gas boiler is developed towards the high-efficiency, low-emission and compact direction, and particularly pays attention to waste heat recovery and steam quality control. Comprising an annular water chamber allowing water to enter, a combustion chamber arranged above the annular water chamber and an ultra-low nitrogen surface fiber combustor located above the combustion chamber and communicated with the combustion chamber, and an annular steam chamber is arranged above the combustion chamber. The ultra-low nitrogen surface fiber burner works to burn gas and raise the temperature, and the composite fin straight water pipe converts water in the water pipe into wet steam through efficient heat exchange of the spiral fins and enters the annular steam chamber. External water is injected into the annular water chamber through the finned tube group of the flue gas condenser and the connecting tube, and then enters the steam chamber through the straight tube. Wet steam in the steam chamber enters the superheater through an inlet pipe to form micro superheated steam. Combustion smoke is condensed and discharged after being filtered by a filter screen and subjected to heat exchange, and dryness of the combustion chamber is guaranteed.

The invention discloses an activated carbon anoxic pyrolysis and steam regeneration process method and device, and relates to the field of activated carbon regeneration. The process method comprises the following steps: S1, dehydration preparation: reducing the moisture content of a carbon layer to 45% through hydraulic conveying and negative pressure dehydration; s2, drying pyrolysis and air stripping, wherein a carbon layer is heated to 300-400 DEG C through circulating heating of superheated steam and tail gas; s3, steam activation: introducing 900 DEG C tail gas to raise the temperature of the carbon layer to 800-850 DEG C for activation reaction; and S4, cooling, namely sequentially cooling to 100 DEG C or below through steam and cold water to complete regeneration of the activated carbon. The energy efficiency utilization rate is excellent, the pore structure is fully recovered, the specific surface area, the polar group content and the adsorption performance of the regenerated activated carbon can be remarkably improved, and the service life of the activated carbon is prolonged.

According to the method and system for calculating the efficiency of the low-pressure cylinder of the steam turbine on line, under the reference working condition and multiple working conditions, parameters such as steam pressure, temperature and back pressure of an inlet and an outlet of a first stage, a second stage and a third stage of the low-pressure cylinder are collected, the efficiency of each stage and the efficiency of the low-pressure cylinder are calculated, dimensionless processing is carried out, and the efficiency of the low-pressure cylinder is calculated; and establishing a multiple regression model which takes the superheated steam stage efficiency as an independent variable and takes the low-pressure cylinder efficiency as a dependent variable. And considering the influence of the back pressure on the efficiency of the low-pressure cylinder, establishing a compensation model, and correcting the predicted efficiency of the low-pressure cylinder. In actual operation, the parameters are collected in real time, the efficiency of the current stage is calculated and substituted into the regression model and the compensation model, and the real-time efficiency of the low-pressure cylinder is obtained. According to the method, direct measurement of wet steam parameters is avoided by utilizing superheated steam stage data which are easy to obtain, real-time and accurate calculation of the efficiency of the low-pressure cylinder under different working conditions is realized, and the method can be widely applied to performance monitoring, operation optimization and fault diagnosis of a turboset.

The electric steam boiler system is characterized in that a water supplementing pipeline is connected with an electrode boiler through a fourth valve, the output of the electrode boiler is connected with a spherical tank through a pipeline and a first valve, and saturated steam directly discharged from the spherical tank is connected with a user side through a pipeline and a tenth valve; and the output of the spherical tank passes through the solid energy storage superheater before being connected with the user side through a pipeline and a third valve. The system is high in energy storage efficiency, long in service life and high in safety, the solid energy storage superheater directly heats saturated steam stored in the spherical tank, simultaneous charging and discharging can be achieved, the electric steam boiler system can rapidly adapt to changes of different heat using scenes and requirements, and the electric steam boiler system can produce both saturated steam and superheated steam.

A liquid blast furnace slag granulation and waste heat recovery system and method, which comprises a cyclone heat exchange device, a granulation device, and a waste heat recovery device. The granulation device injector sprays compressed air and water into high-speed jets to shear the molten blast furnace slag falling freely into the flow hood from the slag tank, and the molten blast furnace slag is broken and solidified into solid particles under the shearing and impact of the high-speed jets. The granulated blast furnace slag enters the cyclone heat exchanger with high-temperature air and steam to achieve rapid separation. The deoxygenated water is pressurized by a hot water pump and then sent to the spiral pipe bundle to exchange heat with the high-temperature gas outside the pipe to obtain saturated or superheated steam, which is delivered to the second heat exchanger of the waste heat recovery device. The high-temperature slag separated from the gas enters the first heat exchanger, and the heat exchange pipe bundle in the first heat exchanger drum is supplied with cooling water to absorb the heat of the high-temperature slag and convert it into steam, and the temperature of the high-temperature slag is further reduced to below 100 DEG C. The low-temperature slag particles flow out from the bottom of the waste heat recovery device and are sent out for recycling by a conveying device.

The utility model discloses a desuperheater, and belongs to the technical field of steam temperature control. The desuperheater comprises a desuperheating pipeline, a hot steam inlet, a desuperheating water inlet, a swirler and a proper-temperature steam outlet, the swirler is provided with a plurality of swirling vanes, the swirling vanes are arranged in the circumferential direction of the desuperheating pipeline by a circle, and the proper-temperature steam outlet is formed in the circumferential direction of the desuperheating pipeline. The radial outer ends of the rotational flow blades abut against the inner wall of the temperature reduction pipeline, and seen from the axial direction of the temperature reduction pipeline, the side edge of each rotational flow blade is completely located in front of or behind the blade face of the adjacent rotational flow blade. And the parallel projection of the swirler in the axial direction of the temperature reducing pipeline is fully distributed on the cross section of the temperature reducing pipeline. Through the arrangement, the desuperheater is beneficial to full mixing of superheated steam and desuperheating water, and the purposes of rapidly cooling and shortening the desuperheating distance are achieved.

The invention relates to the technical field of boilers, in particular to a saturated dual-purpose steam boiler and a flue structure thereof.The saturated dual-purpose steam boiler comprises a first boiler used for combusting fuel to generate smoke and converting liquid water into steam through heat exchange; the second boiler is used for burning fuel to heat the saturated steam into superheated steam; the smoke outlet is used for discharging smoke generated by the boiler; the communicating flue is used for guiding flue gas of the second boiler into the first boiler; the steam-water separator is used for separating water drops in the steam to obtain purer and dry saturated steam; the water draining module is used for draining condensed water separated by the steam-water separator and preventing steam leakage at the same time; the water supply module is used for conveying water to the first boiler and the second boiler; and the overpressure discharge module is used for discharging overheated steam to reduce the pressure in the second boiler. The steam generator has the beneficial effects that saturated steam and superheated steam under different working conditions can be produced, local vortex caused by direct hedging of smoke can be prevented, one smoke outlet is shared, and the applicability is improved.

The invention discloses a system for assisting energy storage and peak regulation of a high-temperature hot water tank through fused salt and a control method, and belongs to the technical field of energy storage and peak regulation. The system comprises a unit power generation circulating system and a heat storage system. The heat storage system comprises a high-temperature hot water energy storage part and a fused salt energy storage part, and a high-temperature fused salt storage tank and a low-temperature fused salt storage tank are arranged in the fused salt energy storage part, so that part of heat of redundant steam of a boiler is stored in high-temperature fused salt when the unit operates at low load; the high-pressure and high-temperature steam after heat exchange with the high-temperature fused salt is bubbled in the water storage tank, water in the water storage tank is heated into high-temperature hot water, and therefore steam heat generated by the boiler is completely stored. When the unit is high in load and needs to release energy, high-temperature hot water in the high-temperature hot water tank is converted into saturated steam through the pressure reducer, then exchanges heat with the high-temperature fused salt and is heated into superheated steam, and the superheated steam enters the medium-pressure cylinder to expand and do work. The system can improve the peak regulation capacity of the unit and quickly realize the change of the unit response load.

The invention discloses a method for preparing biochar through low-temperature carbonization of furfural residues and application, and the method comprises the following steps: pretreatment of furfural residues: carrying out dynamic drying by using superheated steam generated by a biomass boiler, so that the moisture content is reduced to be less than or equal to 25%; carrying out particle reinforced molding, namely mixing the furfural residues with corn straws and wheat straws, and carrying out granulation molding; carrying out segmented low-temperature carbonization, sequentially carrying out drying preheating, ash removal and carbonization stages on the particles, and enabling the hardness of the carbonized particles to reach 8MPa; by-products are recycled, pyrolysis non-condensable gas is used for boiler combustion, condensate can be used as liquid organic fertilizer, heat treatment activation is carried out, and carbonization is carried out for 2 h in a nitrogen environment at the temperature of 600 DEG C; washing and drying: washing with hydrochloric acid (HCl), and drying at 80 DEG C for 24 hours; the method solves the technical problems of high energy consumption in the furfural residue carbonization process and limited application range of carbonized products in the prior art, also solves the problems of limited adsorption capacity and difficult recovery of common charcoal, and is suitable for the environmental protection fields of heavy metal wastewater treatment, pollution remediation and the like.

The invention discloses an evaporation and overheating integrated heat exchanger and a superheated steam generation method.The heat exchanger comprises a horizontal shell and a partition plate arranged in the shell and provided with evaporation holes, the partition plate divides the shell into an evaporation cavity and an overheating cavity, and a first heating assembly is arranged in the evaporation cavity of the shell; the second heating assembly is arranged in the overheating cavity of the shell, and the liquid inlet and the steam outlet are formed in the upper portion and the lower portion of the same end of the shell. During use, water is guided into the evaporation cavity through the liquid inlet; starting the first heating assembly and the second heating assembly; the first heating assembly is used for heating water in the evaporation cavity to generate steam; steam enters the overheating cavity through the evaporation holes and is output through the steam outlet after being heated into superheated steam by the second heating assembly. The device is small in occupied area, compact in structure and small in pressure loss in the steam evaporation process; the partition plate is creatively used as the gas-liquid separator, and an independent gas-liquid separator is not needed. Therefore, the evaporation efficiency is high, and the quality of the generated steam is good.

The invention belongs to the technical field of forest chemical industry and natural perfume extraction and separation, and particularly discloses a superheated steam distillation separation and recovery method for perfume components in cinnamon oil rectifying still residues. The method comprises the following steps: processing the cinnamon oil rectifying still residues by adopting a steam distillation method taking normal-pressure superheated steam as a desorption medium, carrying out condensation cooling and phase separation on distilled oil-water mixed gas, and collecting oily liquid or crystalline solid containing cinnamon spice components, and carrying out one or more physical isolation methods such as freezing crystallization, vacuum fractionation or rectification, recrystallization and the like to obtain natural cinnamon monomer spices such as o-methoxycinnamaldehyde, o-methoxycinnamic acid, phenethyl alcohol and the like. The method has the advantages of low equipment investment, simple and feasible operation, low production cost, clean and pollution-free process, good operation safety, high industrial application feasibility and the like.

The invention relates to the technical field of solid waste recycling, in particular to a pyrolysis-based waste photovoltaic module high-value component rapid separation method and device. The device comprises a preheating unit (10), a crushing unit (20), a pyrolysis unit (30), a superheated steam supply unit (40) and a pyrolysis gas treatment unit (50), the preheating unit (10) is provided with a heating mechanism or is communicated with an external heat source, the crushing unit (20) is provided with a rolling platform (21), the top of the crushing unit (20) is provided with a lifting type roll shaft group, the pyrolysis unit (30) is provided with a heating mechanism and is provided with a first superheated steam leading-in pipe (41), and the superheated steam supply unit (40) is used for producing superheated steam and providing the superheated steam for the pyrolysis unit (30). Compared with a traditional pyrolysis process, the treatment time is shortened by 1 / 2, the separation efficiency is greatly improved, the generation amount of organic wastewater is small, and the tail end treatment load is reduced.

The invention relates to a waste heat gradient recovery system and a non-ferrous metal smelting system. The waste heat gradient recovery system comprises a heat exchanger, a deaerator, a coal economizer, a fire smelting waste heat boiler, a superheater and a high-pressure pump, and the heat absorption side of the heat exchanger, the deaerator, the coal economizer, a heat absorption side pipeline of the fire smelting waste heat boiler and the superheater are sequentially communicated. The high-pressure pump is arranged between the deaerator and the economizer, so that the demineralized water sequentially exchanges heat and recovers waste heat of the low-temperature area of the sulfuric acid dry absorption section, the low-temperature area of the sulfuric acid conversion section, the pyrometallurgy section and the intermediate-temperature area of the sulfuric acid conversion section. According to the waste heat gradient recovery system, low-grade waste heat in the non-ferrous metal smelting system is recovered, the waste heat recovery efficiency is improved, the steam yield is also improved, superheated steam with high-grade heat energy is finally produced by recovering different grades of waste heat, subsequent steam utilization is facilitated, and the utilization rate of the superheated steam is improved. And the energy consumption in the waste heat gradient recovery system is also reduced.

The invention relates to an extraction method of ganoderma lucidum spore powder polysaccharide as well as a product and application thereof, and belongs to the technical field of edible mushroom processing. The extraction method comprises the following operation steps: selecting fresh ganoderma lucidum spore powder, and removing impurities; performing ultrasonic-assisted high-temperature and high-humidity superheated steam treatment; performing variable-pressure drying; extracting by a hot water method and the like. The invention further discloses the ganoderma lucidum spore powder polysaccharide obtained according to the extraction method and application of the ganoderma lucidum spore powder polysaccharide in ganoderma lucidum products for enhancing immunity, resisting oxidation, reducing blood sugar and reducing blood fat. The product extracted by the method has the advantages of high ganoderma spore wall breaking rate and high polysaccharide extraction rate, and has wide market application prospects.

The invention relates to the technical field of pet food processing, and discloses a pet fresh food curing method adopting sectional type temperature control cooking, and the method comprises the following steps: carrying out vacuum degassing on a meat paste matrix containing a functional structure stabilizer; injecting saturated water vapor to carry out negative-pressure low-temperature condensation curing; superheated steam, nitrogen and water mist are introduced to execute a pressure pulsation oscillation program, and three-phase pulsation permeation is carried out; and then the pressure is quickly relieved to deep vacuum, gradient pressure difference is used for driving adiabatic flash evaporation pore forming and water evaporation, and finally normal-pressure discharging is recovered. The protein thermal damage is reduced through negative-pressure low-temperature curing, heat and mass transfer is enhanced through gas-steam-fog three-phase pulsation, dissolved gas is separated out and nucleated through the flash evaporation process, a uniform loose porous structure is constructed, the rehydration property and texture property of the product are remarkably improved, and the product quality is improved. And the problems of surface hardening and non-uniform central curing caused by traditional cooking are solved.

The invention provides fresh-keeping brown rice treated by superheated steam and a preparation method of the fresh-keeping brown rice, and belongs to the technical field of food processing. The invention provides a preparation method of fresh-keeping brown rice subjected to superheated steam treatment, which comprises the following steps: grinding brown rice, and then carrying out superheated steam treatment; the grinding degree of the ground brown rice is 0-2%. The temperature of the superheated steam treatment is 110-150 DEG C, and the treatment time is 5 seconds to 2 minutes. By exploring the interaction relationship between the superheated steam treatment condition and the brown rice grinding degree, the accurate superheated steam treatment temperature, time and pressure and the influence of each parameter on the brown rice quality under the condition of different brown rice grinding degrees are obtained. The technical method for processing brown rice through superheated steam can be directly applied to the field of processing of brown rice food and processing of agricultural products such as brown rice, so that the processing efficiency and the product quality of brown rice food are improved.

The invention provides a process method for preparing nanoscale ultra-pure coal by a one-step method, which comprises the following steps: (1) feeding raw material coal into a steam mill, introducing superheated steam into the steam mill in the presence of an agglomeration agent, performing high-speed collision crushing on the superheated steam and the raw material coal, and then separating; (2) the separated materials are separated through a cyclone separator, mineral substances are discharged from the top of the cyclone separator along with steam, coal granules are obtained at the bottom of the cyclone separator, and after the coal granules are dried through hot steam, nanoscale ultra-pure coal powder and an agglomeration agent are obtained; wherein the temperature of the superheated steam ranges from 280 DEG C to 350 DEG C, and the temperature of an outlet of the steam mill ranges from 130 DEG C to 180 DEG C; the boiling point of the agglomeration agent is 180-300 DEG C. According to the method, the temperature difference of the inlet and the outlet of the steam mill is utilized, combination and separation of the superfine pulverized coal and the agglomeration agent are achieved, the technological process is simplified, meanwhile, direct heat exchange is achieved in the evaporation and condensation processes of the agglomeration agent, and the heat efficiency of the whole process is improved.