13results about How to "Reduce heat consumption" patented technology

The invention relates to the technical field of multi-energy complementary power generation, and discloses an industrial steam supply peak shaving system and method coupling fused salt heat storage and solar energy, and the industrial steam supply peak shaving system comprises a coal-fired power generation system and an industrial steam supply system; in the heat storage mode, the boiler, the steam cooler and the condenser are sequentially connected; in the heat release mode, the high-pressure heater, the primary feed water heater and the low-pressure cylinder are sequentially connected through pipelines; and the feed pump, the secondary feed water heater and the boiler are connected in sequence. In the low ebb of the electrical load, solar energy is used for heating fused salt to store heat, and part of high-temperature steam is extracted from steam-water circulation of the improved coal-fired power generation system to store the heat in a heat storage device and does not enter a steam turbine for power generation; the power load output is adjusted by adjusting the thermal load output of the thermodynamic system in the power generation process, and load decoupling of the boiler and the steam turbine is achieved. And in the electrical load peak, the stored heat energy is released back to steam-water circulation, and the electrical load of the coal-fired power generation system is increased.

The invention provides a resonant converter parameter optimization method and system of an electric vertical take-off and landing aircraft, and relates to the technical field of aviation power electronics. The method comprises the following steps: constructing an improved equivalent circuit model containing transformer secondary side leakage inductance; deriving a voltage gain function expression of the improved equivalent circuit model and an optimization calculation formula of the excitation inductance required for realizing the soft switching; parameter optimization is carried out based on the voltage gain function expression and the excitation inductance optimization calculation formula; and building an LLC resonant converter experimental prototype according to the optimized parameters, and carrying out system verification and performance evaluation. According to the invention, the problem of performance reduction caused by neglecting secondary side leakage inductance under a high-frequency working condition in a traditional design is solved, the efficiency, the voltage stabilization precision and the power density of the converter are remarkably improved, and the high requirement of eVTOL on an airborne power supply is met.

The application belongs to the field of cellulose ethers, and embodiments provide a sodium carboxymethyl cellulose and a preparation method and a dust suppressant thereof. The method comprises the following steps: mixing cellulose, a solid base and a solid etherifying agent to obtain a first mixture; adjusting the humidity of the first mixture by using a humidity adjusting medium to obtain a flowable wet powder body; mechanically activating the wet powder body to obtain a second mixture; performing a heating treatment on the second mixture to cause the second mixture to undergo an alkalization reaction and an etherification reaction; performing a neutralization treatment on the obtained heating treatment product to obtain a neutral mixture; and sequentially performing a dissolution treatment and a purification treatment on the neutral mixture to obtain the sodium carboxymethyl cellulose. The method of the embodiments of the application does not require a large amount of organic solvents such as isopropyl alcohol, thereby reducing the generation of waste liquid and significantly reducing the environmental disposal cost and production safety risk.

The utility model discloses a steam-water circulation system for a steam generator, which belongs to the technical field of nuclear power operation and comprises the steam generator, a steam turbine, a condenser, a starting water supply tank, a deaerator, a sixth valve group, a first valve group, a second valve group, a third valve group, a fourth valve group, a fifth valve group and a sixth valve group. According to the system, thermal load impact on the condenser at the initial stage of starting of the unit can be avoided, meanwhile, water consumption and heat consumption in the starting process are low, and safe operation of the unit can be guaranteed when feed water transmission fluctuates.

The invention relates to the technical field of phased array radar power supply and distribution, in particular to an intelligent multi-stage slow start device applied to a radar power supply and distribution system, and the intelligent multi-stage slow start device is connected between an input terminal and an output terminal of the radar power supply and distribution system. The intelligent multi-stage slow start device comprises a main loop module, a state acquisition module and a decision control module, the main loop module is composed of a main relay and n slow start branches which are connected in parallel. Each slow start branch is composed of a branch relay and a current-limiting resistor which are connected in series. The state acquisition module is composed of a voltage acquisition unit used for acquiring output voltage in real time and a temperature acquisition unit used for acquiring the temperature of each current-limiting resistor in real time. The decision control module is composed of a central processing unit, a voltage reference adjusting unit, a comparison unit and a driving unit, and is used for controlling the on-off of the branch relays of the n slow start branches. According to the device, low-cost, low-heat-consumption and high-reliability slow start is realized, and higher-level system protection is provided.

The invention discloses an application of silicon fluoride in preparation of Portland cement clinker. The application comprises the following steps: (1) preparing raw materials, wherein the preparation raw materials of the Portland cement clinker comprise sandstone obtained by mining and screening siliceous ores, yellow phosphorus slag, an iron material, fly ash, coal gangue, sludge, silicon fluoride waste residue and limestone; (2) crushing and homogenizing the raw materials; (3) preheating and decomposing; and (4) carrying out high-temperature calcination. The problem that silicon fluoride waste residues are difficult to stack is effectively solved, the reaction activity of crystalline silicon is increased, clinker is promoted to be calcined and compounded completely, and the liquid phase appearing temperature and the clinker sintering temperature are reduced. The firing temperature range is expanded, the length of a firing zone is prolonged, and the reaction time of materials is prolonged. The viscosity of a liquid phase can be reduced, so that the diffusion of mass points in the liquid phase is facilitated, and the formation of tricalcium silicate is accelerated. As the firing range of the clinker is expanded, the harm caused by non-uniform temperature field in the kiln is greatly reduced, and the yield and quality of the clinker are improved. And as the calcining temperature is reduced, the NxO emission is correspondingly reduced.

This invention discloses an energy-saving multi-effect evaporation system and process based on absorption refrigeration and heat pump in the field of multi-effect evaporation technology. The system includes: a first-effect evaporator, a second-effect evaporator, a third-effect evaporator, a steam condenser, a primary feed pump, and a secondary feed pump. The multi-effect evaporation system also includes a refrigeration unit, a high-pressure evaporator, and a high-pressure absorber. This application recovers waste heat from the multi-effect evaporation process using absorption refrigeration and heat pump technology to generate circulating steam of the same grade as the source steam. This serves as a supplement to the source steam during the evaporation process, reducing both the consumption of source steam and the energy consumption of the cooling tower for cooling medium-temperature water.

The application discloses a heat work driving type refrigeration system with heat and mechanical compression in parallel and multiple heat recovery and a method thereof; an evaporator is sequentially connected with a first-stage compressor and a heat recovery device; the heat recovery device is connected with a gas-liquid separator and an absorber; the gas-liquid separator is connected with a second-stage compressor, the heat recovery device and a condenser; the condenser is connected with a first throttling valve and the gas-liquid separator; the condenser is connected with the gas-liquid separator, a second throttling valve and the evaporator; the absorber is connected with a solution pump, a heat recovery cycle side of the heat recovery device and a generator; one side of the generator is sequentially connected with a third throttling valve of the heat recovery cycle side of the heat recovery device and the absorber, and the other side of the generator is connected with the heat recovery device and the condenser. In the system, the heat and mechanical compressors have parallel connection characteristics at a high-pressure stage, and are connected in series at a low-pressure stage, and the exhaust heat of three compression processes is compactly recovered and utilized in heat compression through a multiple flow heat recovery device, so that the heat consumption is significantly reduced and the matching of the system with a small and medium-sized heat source is improved.

The present application relates to a UV acrylic optical bonding glue, a preparation method thereof and a composite optical film, which adopts a mixture of three systems of acrylate oligomers, polyurethane oligomers and epoxy oligomers, and optimizes the proportion of each component and regulates the components and proportions of acrylate oligomers to achieve low viscosity, direct coating, excellent soft bonding performance, high tensile strength, excellent peeling force performance and environmentally friendly characteristics of solvent-free use. It can be directly applied to the composite optical film industry without solvent dilution, significantly reducing manufacturing costs. In addition, the introduction of a dual photoinitiator system broadens the photocuring wavelength range of the glue, achieving fine control of curing, and the addition of isocyanate and epoxy coupling agents further improves the adhesion between the glue and the optical film and the overall structural stability of the composite optical film.

The invention discloses a transformation method for adding a heat exchange unit of a cement kiln tail preheating system, which comprises the following steps: a preheating system and a corresponding basic tower are newly arranged on the ground near an original kiln tail tower, the newly arranged preheating system comprises multiple stages of heat exchange units, and each heat exchange unit comprises a cyclone, a connecting heat exchange pipeline and a material pipe; the connecting pipeline is mainly used for realizing gas-solid heat exchange and gas conveying among the heat exchange units, the cyclone cylinder is used for realizing gas-solid separation on a gas-solid mixture subjected to heat exchange, and the material pipe is used for realizing material conveying among the heat exchange units. In addition, gas and material conveying between the newly-built kiln tail preheating system and the original preheating system is achieved by transforming a connecting pipeline, a material pipe and the like between the original kiln tail preheating system and the newly-built kiln tail preheating system. According to the method, a five-stage preheater is transformed into a seven-stage preheater, the flue gas heat loss of an outlet of the preheater is greatly reduced, the decomposition rate of hot raw materials entering the kiln and the burn-off rate of pulverized coal are increased at the same time, and the method is high in feasibility of transformation implementation, low in civil engineering transformation cost, controllable in transformation construction period and short in kiln stopping time.

The utility model discloses a sealed deep groove ball bearing, and relates to the technical field of deep groove ball bearings. The sealing ring comprises an outer ring and an inner ring, a buffering mechanism and a lubricating mechanism are arranged on the outer ring, and the buffering mechanism comprises a buffering assembly and a sealing assembly; the buffering assembly comprises a plurality of limiting blocks fixedly connected to the outer wall of the inner ring, a plurality of balls are arranged between the limiting blocks, the outer wall of the inner ring and the inner wall of the outer ring are each provided with an embedded sliding groove, the outer caliber of each ball is the same as the inner caliber of the corresponding embedded sliding groove, and the balls are slidably connected with the inner walls of the embedded sliding grooves. And first grooves are formed in the multiple limiting blocks correspondingly, two pistons are slidably connected to the inner walls of the first grooves, and sliding rods are fixedly connected to the sides, away from each other, of the two pistons correspondingly. The buffering mechanism is arranged, so that the contact area of the balls and the circular grooves is reduced, the heat consumption and the energy loss of the bearing are reduced, and the overall efficiency and the stability of the bearing are improved.

The invention discloses an out-of-kiln pre-decomposition system for sintering alumina clinker and an application method.The out-of-kiln pre-decomposition system comprises a smoke chamber, a decomposition furnace, a cyclone cooler, a multi-stage cyclone preheater and a fan which are sequentially connected through pipelines, and the multi-stage cyclone preheater is further connected with the decomposition furnace through a pipeline; the cyclone cooler is further connected with the smoke chamber through a pipeline, and the fan is further connected with the cyclone cooler and the outside through pipelines. The multi-stage cyclone preheater and the decomposing furnace are utilized to complete complete pre-decomposition of the raw materials, low-temperature flue gas is utilized to reduce the temperature of the materials discharged from the decomposing furnace, and the problem that the high-temperature materials crust in the preheater and a smoke chamber is solved. The process is simple, the system is stable and reliable, the pre-decomposition outside the kiln of the raw materials can be fully completed, and good economic benefits and social benefits are achieved.

The invention discloses a system for preparing calcium oxide from carbide slag and an application method.The system comprises a multi-stage cyclone preheater, a heat exchanger, a cyclone separator, a suspension reactor and a multi-stage cyclone cooler which are sequentially connected, and the multi-stage cyclone preheater is connected with the heat exchanger and the suspension reactor through pipelines; the cyclone separator is respectively connected with the heat exchanger and the multi-stage cyclone cooler through pipelines; and an air outlet of the multi-stage cyclone cooler is connected with the suspension reactor. Hot flue gas generated by the suspension reactor is used for preheating air through the heat exchanger to serve as a carbide slag preheating heat source, calcium oxide cooling air serves as combustion-supporting air of the suspension reactor, carbide slag carbonization is effectively avoided while waste heat is fully utilized, the heat efficiency is high, the reaction conversion rate is high, and the system is stable and reliable; the method can be used for preparing calcium oxide by calcining carbide slag, and has good economic and social benefits.