169 results about "Lithium bromide" patented technology

The invention belongs to the technical field of solid-state batteries, and provides a lithium-sulfur-phosphorus-chlorine-bromine solid-state electrolyte, a preparation method thereof and an all-solid-state battery. The preparation method comprises the following steps: mixing lithium sulfide and phosphorus sulfide, and carrying out ball milling to obtain a lithium-sulfur-phosphorus ternary mixture; in protective gas, the lithium-sulfur-phosphorus ternary mixture, lithium chloride and lithium bromide are mixed and then subjected to ball milling, and a lithium-sulfur-phosphorus-chlorine-bromine mixture is obtained; and carrying out heat treatment on the lithium-sulfur-phosphorus-chlorine-bromine mixture in protective gas to obtain the lithium-sulfur-phosphorus-chlorine-bromine solid electrolyte. The lithium-sulfur-phosphorus-chlorine-bromine solid electrolyte provided by the invention not only improves the electrochemical stability, but also maintains the high ionic conductivity characteristic.

The invention discloses an evaporation pressure reference controller for a lithium bromide absorption refrigeration system. The evaporation pressure reference controller comprises a pressure detection unit, a reference unit, a comparison unit and an execution unit. The pressure detection unit detects absolute pressure in the evaporator in real time; the reference unit provides a reference signal of the target evaporation pressure; the comparison unit outputs a pressure deviation signal; and the execution unit adjusts the circulation volume of the lithium bromide solution so as to approach to the solution circulation volume under the full-load design working condition of the system, and the adjustment benchmark is the full-load design working condition of the system. The evaporation pressure serves as an absolute physical reference, the solution circulation amount is dynamically adjusted, the system is made to adapt to the heat source load, the concentration automatically avoids the crystallization line, and the functions of load monitoring, crystallization early warning, energy efficiency calculation and the like are provided. And the device is suitable for various low-grade heat source scenes such as hot water, steam and flue gas, can be used for new machine manufacturing and stock transformation, and reduces the equipment size and the manufacturing cost.

The utility model relates to the technical field of storage devices, in particular to a copper corrosion inhibitor storage device for a lithium bromide chilled water system, which performs position adjustment through an adjusting device, performs lifting adjustment through a lifting device and performs monitoring through the distance of a monitoring device relative to the storage device. The storage device is limited through the limiting device, and the copper corrosion inhibitor is stored through the storage device; comprising a console; the device further comprises an adjusting device, a lifting device, a monitoring device, a limiting device and a storage device, the adjusting device and the storage device are both installed on the operation table, and the lifting device, the monitoring device and the limiting device are all installed on the adjusting device. The adjusting device adjusts the position, the lifting device lifts, the monitoring device monitors the distance, the limiting device limits, and the storage device stores.

The application belongs to the technical field of hydrogen energy comprehensive utilization, and particularly discloses an electricity, cold and heat multi-combined supply comprehensive utilization system and method based on hydrogen energy, which comprises a hydrogen fuel cell system, a heat exchanger, a hydrogen internal combustion engine, a flue gas hot water type lithium bromide unit and a ground source heat pump system. Cooling water of the hydrogen fuel cell system cooling pipe network exchanges heat with first circulating medium of the heat system in the heat exchanger, high-temperature flue gas of the hydrogen internal combustion engine flue gas pipe network and cylinder jacket water of the cylinder jacket water pipe network exchange heat with the first circulating medium in the flue gas hot water type lithium bromide unit, and the second circulating medium of the cold system is cooled in the flue gas hot water type lithium bromide unit. The ground source heat pump system comprises a ground source heat pump unit, and is used for exchanging heat between low-temperature circulating water of the ground source heat pump rock-soil side and the first circulating medium. The application fully utilizes hydrogen energy, uses waste heat generated by hydrogen fuel cell and hydrogen internal combustion engine to generate electricity, heating and cooling, and realizes hydrogen energy cascade utilization.

The invention discloses a solid electrolyte and a preparation method thereof, a solid-state battery and electric equipment. The preparation method of the solid electrolyte comprises the following steps: S1, in an inert gas atmosphere, mixing lithium bromide, metal bromide and a solvent for reaction, and grinding after solid-liquid separation to obtain a precursor; s2, sequentially carrying out annealing I and annealing II on the precursor; an intermediate is obtained; and S3, mixing the intermediate and lithium halide, and carrying out ball milling to obtain the solid electrolyte, the temperature of annealing II is higher than that of annealing I; the annealing temperature of the annealing II is less than or equal to 400 DEG C. A self-adaptive interface layer with high ionic conductivity is generated in situ between the solid electrolyte and an electrode, and a primary gap between the electrode and the solid electrolyte and a new gap generated by lithium stripping are effectively filled, so that the defect of high impedance caused by poor interface contact is eliminated, the formation of lithium dendrites can be inhibited, and the service life of the lithium battery is prolonged. Further, the electrochemical performance of the solid-state battery is improved.

The invention belongs to the technical field of heating, and particularly relates to a heat exchange system and method for power plant low-temperature waste heat recovery heating, and the system comprises a power plant, a lithium bromide absorption heat pump unit and a shell-and-tube steam-water heat exchanger; through the lithium bromide absorption heat pump unit, heat exchange is conducted on heating return water and power plant steam, low-temperature waste heat of a power plant is recycled, and the heating return water is heated; heating return water exchanges heat with steam of a power plant through a shell-and-tube steam-water heat exchanger, and the heating return water is heated; heating return water and power plant steam are subjected to heat exchange through the lithium bromide absorption heat pump unit, low-temperature waste heat of the power plant is recycled, the heating return water is heated, then the heating return water and the power plant steam are subjected to heat exchange through the shell-and-tube steam-water heat exchanger, and the heating return water is heated again. The heating reliability and flexibility can be effectively improved, and the utilization rate of heating equipment is increased.

The present application belongs to the technical field of energy saving and resource utilization in titanium dioxide production, and particularly relates to a method and system for heat energy utilization of a titanium dioxide gas-powder system. The method is aimed at the problems of waste of high-temperature tail gas heat energy of the gas-powder system and high energy consumption for cold preparation in the front production process, and adopts a two-stage cooling and heat energy recovery mode of "lithium bromide refrigerating unit + cooling device". The specific steps are as follows: introducing the clean high-temperature tail gas at 220-240 DEG C after dust removal into the lithium bromide refrigerating unit, driving the preparation of cold water or ice water by using the heat energy thereof, and directly supplying the front titanium liquid freezing crystallization process; then, the tail gas enters the secondary cooling device for deep cooling to below 70 DEG C for standard emission, while the circulating water is heated to hot water at 45-55 DEG C for reuse in the water washing process. The present application realizes "waste heat" preparation of "cold" and recovery of low-level heat energy through heat energy cascade utilization, the system heat recovery rate is greater than or equal to 92%, the power consumption of the lithium bromide unit is only 1 / 10 or less of the traditional refrigeration mode, and the production cost is significantly reduced.

The invention relates to the technical field of multi-energy complementation and waste heat recovery, in particular to a lithium bromide heat pump regulation and control method for coupling solar photo-thermal and computing power waste heat. The method comprises the steps of data acquisition, model calculation, dynamic regulation and control and safety monitoring. The method comprises the steps of collecting multi-source operation data and inputting the data into a thermodynamic matching model; the method is characterized in that coupling heat source exergy efficiency and a thermal response time constant are solved, a flow regulation and heat source switching instruction is generated, and a generator is kept in a high-efficiency temperature range; meanwhile, the crystallization safety margin is calculated in real time, and the anti-crystallization process is triggered when the crystallization safety margin is lower than a threshold value; according to the method, the conversion from static threshold dependence to dynamic thermodynamic matching is realized, the problem of high-grade heat energy waste caused by source-load asynchronization is solved, and the thermodynamic perfection of the system is maximized.

The invention belongs to the technical field of biomass materials and green chemical engineering, and discloses a green preparation method and system of a high-porosity cellulose porous membrane based on solvent replacement. The invention aims to solve the problems that the pore structure is easy to dry and collapse, the solvent cost is high and the environment is not protected when the cellulose porous membrane is prepared in the prior art. The core of the method is that cellulose is dissolved in a lithium bromide aqueous solution, and a cellulose hydrogel network is formed through cooling solidification and washing regeneration; then, completely replacing the hydrogel by using a low-surface-tension alcohol or ketone solvent (such as tertiary butanol) so as to eliminate destructive capillary force in the drying process and maintain a porous structure; and finally, drying at normal pressure to obtain the high-porosity cellulose membrane. The core of the system is that a three-loop recycling system of lithium bromide and alcohol or ketone solvents is integrally designed, and near-zero emission and cyclic utilization of the solvents are achieved. The prepared cellulose porous membrane is high in porosity (50-80%) and controllable in structure, and the whole process is green, economical and suitable for large-scale production.

The invention discloses a cold-in-summer and hot-in-winter double-working-condition operation system based on a lithium bromide unit. The system comprises a lithium bromide absorption type refrigerating unit, a driving heat source output unit, a driving heat source recovery unit, a cooling tower set, a user water return pipeline, a user water supply pipeline and a condenser set. Under the summer refrigeration working condition, the condenser set is isolated and stopped, the cooling tower set and the lithium bromide absorption type refrigerating unit are matched for use to form a stable refrigerating system, and low-grade steam of a thermal power plant and steam provided by an electric steam boiler are mutually supplemented to serve as a heat source to drive refrigeration in summer; under the working condition of heat supply in winter, the cooling tower set is isolated and stopped, the condenser set and the lithium bromide absorption type refrigerating unit are used in cooperation to form a stable heat supply system, the condenser set uses heat supply network return water as cooling water to exchange heat with reversely-introduced exhaust steam, and the water temperature is increased from 46.96 DEG C to 75.9 DEG C through cascade heat exchange by utilizing the latent heat of recycled refrigerant steam, so that the heat supply system is formed. And waste heat of exhaust steam and latent heat of refrigerant steam are recovered to supply heat to a user side.

The invention relates to the technical field of heating devices, and discloses a fuel gas absorption heat pump energy-saving heating device and method.The fuel gas absorption heat pump energy-saving heating device comprises a fixed base, a protective shell is fixedly connected to the upper surface of the fixed base, a display screen is installed on the outer wall of the protective shell, and a fuel gas burner is installed at the top of the protective shell; and the bottom of the gas burner is fixedly connected with a conveying pipeline. High-temperature fuel gas is conveyed to the absorption heat pump body through the fuel gas burner, a lithium bromide solution is heated through the generator to enable a refrigerant to be evaporated, heat is released in the condenser to heat heating circulating water, meanwhile, part of refrigerant steam is pressurized and heated in combination with the compressor, efficient heat conversion is achieved, and energy is saved. The evaporator, the compressor, the heat exchange tower and other assemblies work cooperatively and are matched with water flow control of the circulation assembly, stable operation of heating circulation is ensured, stable heating can be continuously provided for users, and the heating efficiency and effect are effectively improved.

A first water inlet pipe of a first titanium plate heat exchanger of the system is connected with a water taking well, a first water outlet pipe of the first titanium plate heat exchanger is connected with a first water inlet pipe of a second titanium plate heat exchanger, and a first water outlet pipe of the second titanium plate heat exchanger is connected with a recharge well. The second water outlet pipe is connected with a first water inlet pipe of a steam type lithium bromide heat pump unit, a first water outlet pipe of the steam type lithium bromide heat pump unit is connected with a second water inlet pipe of a second titanium plate type heat exchanger, and the second water inlet pipe is connected with a heat supply network water return pipe and a heat supply pipe. A second water inlet pipe of the first titanium plate type heat exchanger is connected with a heat supply network water return pipe, a second water outlet pipe is connected with a heat supply pipe, a third water outlet pipe of the steam type lithium bromide heat pump unit is connected with a drain cooler, and the first titanium plate type heat exchanger is connected with the drain cooler. And waste heat is fully recovered.

The invention relates to a system and a process for recovering gas phase condensation heat at the top of a desorption tower of a urea device. The system comprises a vacuum stripping preconcentrator, a reflux condenser, a vacuum preconcentrator, a medium-pressure methylamine condenser and a liquid ammonia preheater. A urea solution is subjected to first evaporation and concentration in a vacuum stripping preconcentrator, and a gas phase at the top of a desorption tower enters a reflux condenser to be completely condensed after being incompletely condensed in a shell pass; the concentrated urea solution enters a vacuum pre-concentrator for secondary evaporation and concentration, and the gas phase at the top of the medium-pressure decomposition tower and the methylamine solution at the outlet of the medium-pressure methylamine pump enter a medium-pressure methylamine condenser for further condensation after being incompletely condensed in a shell pass. The heat of the intermediate water is used for preheating liquid ammonia and refrigerating a lithium bromide unit, and the produced low-temperature water is supplied to a second-stage evaporative condenser of a urea granulation device. Through reasonable connection and process design, efficient recovery and utilization of low-grade heat energy are achieved, accurate control over the intermediate water flow is achieved, and it is ensured that all equipment operates under the optimal working condition.

The utility model discloses a flue gas waste heat recovery system which comprises a flue gas heat exchanger which comprises a shell, a heat exchange cavity is formed in the shell, a heat exchange plate is arranged in the heat exchange cavity, and first cooling liquid in the heat exchange plate can cool high-temperature flue gas; and the lithium bromide absorption type unit is connected with the flue gas heat exchanger, the lithium bromide absorption type unit can cool the first cooling liquid in the heat exchange plate, and meanwhile, the lithium bromide absorption type unit can cool the second cooling liquid used by a cooling liquid demand end. According to the technical scheme, the flue gas heat exchanger and the lithium bromide absorption type unit are combined for use, the flue gas is cooled through the flue gas heat exchanger so that the flue gas can reach the emission standard, and meanwhile, the lithium bromide absorption type unit and the second cooling liquid in the lithium bromide absorption type unit are cooled through the heat of the flue gas so that the cooling liquid demand end can use the cooling liquid. And full utilization of energy is realized, and great economic benefits are generated.

This invention discloses a cascade refrigeration system driven by industrial condensate waste heat, comprising: a first evaporator, an R134a centrifugal compressor, an evaporator-condenser, a first pressure-reducing throttling valve, an absorber, a lithium bromide solution pump, a generator, a heat exchanger, a second pressure-reducing throttling valve, a condenser, and a third pressure-reducing throttling valve. For the R134a refrigerant cycle, the cold fluid side of the first evaporator is a refrigerant flow, and the hot fluid side outlet of the first evaporator is connected to the inlet of the R134a centrifugal compressor. For the lithium bromide refrigeration cycle, the hot fluid side outlet of the evaporator-condenser is connected to the inlet of the absorber, the outlet of the absorber is connected to the inlet of the lithium bromide solution pump, the outlet of the lithium bromide solution pump is connected to the inlet of the heat exchanger, the outlet of the heat exchanger is connected to the inlet of the generator, the solution outlet of the generator is connected to the heat exchanger, the liquid phase outlet of the generator is connected to the hot fluid side inlet of the heat exchanger, and the hot fluid side outlet of the heat exchanger is connected to the second pressure-reducing throttling valve.

The slag flushing waste heat gradient utilization and combined cooling heating and power supply system comprises a heat pipe flat plate steam heat collector, a heat pipe flat plate fluid heat collector, a temperature difference power generation device, a heat exchanger, a heat pump unit, a lithium bromide refrigerating unit and a power storage and heat storage device. A gradient utilization process is constructed based on slag flushing waste heat temperature characteristics, specifically, slag flushing steam and slag flushing water waste heat are collected nearby through a heat collector and converted into electric energy through a temperature difference power generation device, and then a heat pump is used for improving the medium and low temperature waste heat grade for heat supply, or a lithium bromide refrigerating unit is used for cooling; the electricity storage device and the heat storage device balance supply and demand fluctuation, and an energy comprehensive utilization efficiency optimization function dynamically adjusts operation parameters in combination with waste heat characteristics, supply and demand and real-time electricity price. The system realizes combined supply of cooling, heating and power, breaks through the limitation of traditional single application, reduces steam transmission loss, improves waste heat utilization efficiency and supply stability, and provides an efficient solution for energy conservation and consumption reduction of iron and steel enterprises.

This invention relates to a stable silk fibroin liquid aggregate, gel, its preparation method, and its application, belonging to the field of silk fibroin technology. The preparation method of this invention includes the following steps: S1, dissolving silk fibroin in a lithium bromide solution, then adding trypsin for incubation to obtain an enzymatically digested silk fibroin solution; S2, subjecting the enzymatically digested silk fibroin solution to low-temperature programmed centrifugation, including an induction stage, a nucleation stage, and a liquid-liquid phase separation stage, followed by washing to obtain a stable silk fibroin liquid aggregate. This method can reduce aggregate droplet aggregation and improve droplet particle size uniformity.

The utility model provides a vacuum-pumping system which comprises a vacuum pump, an oil stopper, an ejector, a gas collection tank and a gas-liquid separator, the vacuum pump is connected with the oil stopper through a vacuum-pumping connecting pipe, the oil stopper is connected with a barrel of an absorber, the oil stopper is connected with the gas collection tank through a first connecting pipe, and the gas collection tank is connected with the ejector through a second connecting pipe. The gas collecting tank is connected with the upper end of the gas-liquid separator through a second connecting pipe, a gas-liquid mixing outlet of the ejector is connected with the gas-liquid separator, and the ejector is connected with a barrel of the absorber. According to the vacuumizing system, the lithium bromide absorption heat pump / refrigerating machine can keep good vacuum performance, and therefore the performance and the service life of components of a unit are guaranteed.

The present invention relates to a method for producing a lithium halide compound, capable of industrially advantageously producing a lithium halide compound having a low water content, particularly lithium bromide and lithium iodide, at a high reaction efficiency without accompanying a step of directly removing water, and the method including mixing lithium sulfide, a halogen molecule of at least one of bromine and iodine, and a first solvent; and removing the first solvent, wherein the first solvent is a solvent that dissolves a lithium halide containing the same halogen element as the halogen molecule.

The invention relates to an operation control method and device for a lithium bromide refrigerating unit. The operation parameters of the unit are monitored in real time; wherein the operation parameters at least comprise flow and temperature of cold water, hot water and cooling water; based on the operation parameters, calculating at least one indirect characteristic quantity reflecting the overall thermodynamic state of the unit; according to the change mode of the indirect characteristic quantity, the current abnormal state of the unit is judged; analyzing a fault cause based on the abnormal state; and outputting a corresponding control maintenance strategy according to the fault inducement. According to the technical scheme provided by the invention, the dependence on the experience of maintenance personnel can be greatly reduced, the accuracy of abnormity judgment and the maintenance efficiency are improved, the problem can be quickly positioned, and effective measures can be taken, so that the stable operation of the unit is ensured, the shutdown loss is reduced, and the operation reliability and economy of the unit are improved.

This invention discloses a multi-cold source system and method for a gas-fired steam boiler coupled with a two-stage heat pump. The flue gas from the gas-fired boiler releases heat through two stages of flue gas-water heat exchangers, then enters a parallel first-stage flue gas-air heat exchanger, a third-stage flue gas-water heat exchanger, and a flue gas-circulating water heat exchanger. The flue gas-circulating water heat exchanger provides a heat source for a low-temperature heat pump or a lithium bromide absorption heat pump, or an air-source heat pump can replace the flue gas-circulating water heat exchanger and the low-temperature heat pump. The heat from the flue gas in the parallel structure is distributed, and the released heat from the flue gas heats the air and feedwater. The flue gas then heats the feedwater through the low-temperature heat pump, air-source heat pump, or lithium bromide absorption heat pump. The heated feedwater then absorbs heat through a high-temperature heat pump and the first-stage flue gas-water heat exchanger before entering the gas-fired boiler along with the air. This invention fully absorbs the latent heat of water vapor in the flue gas of a gas-fired steam boiler, reducing the flue gas temperature to below 30°C, raising the feedwater temperature from 20°C to 120-140°C, raising the air temperature from 20°C to 50-90°C, and increasing the boiler efficiency to over 107%.

1. The name of the design product: a lithium bromide unit control system graphical user interface for electronic equipment. 2. The use of the design product: an electronic equipment. 3. The design points of the design product: the graphical user interface. 4. The picture or photo that best indicates the design points: front view. 5. The use of the graphical user interface: the graphical user interface of the design product is used to display the information of the lithium bromide unit control system and enable the user to perform corresponding operations on the lithium bromide unit control system. For example, the flow direction of the fluid in the pipeline, the temperature of the fluid inside the pipeline, the working state of the current pump, and the opening and closing state of the control valve can be displayed in the graphical user interface; the user can click the buttons on the left side of the graphical user interface to perform corresponding operations, such as jumping to the home page, viewing the curve, viewing the system diagram, setting the mode, and viewing the alarm information.

The application provides a high-efficiency humidity-controlling energy-saving building material, a preparation method and application thereof, and the preparation method comprises the following steps: step one, preparing a porous substrate; step two, immersing the porous substrate in a humidity-controlling solution for a period of time, and taking out the porous substrate to obtain the high-efficiency humidity-controlling energy-saving building material, wherein the humidity-controlling solution comprises a humidity-controlling composition, the humidity-controlling composition comprises at least three kinds of light metal salts and one other kind of substance, the light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide and sodium chloride, and the other kind of substance is selected from xanthan gum, silicon dioxide, sodium polyacrylate and sodium hexametaphosphate.

The invention relates to the field of semiconductors, in particular to semiconductor temperature control equipment and a temperature control method. The semiconductor temperature control equipment comprises a first three-way valve, a semiconductor temperature control device and a lithium bromide absorption refrigeration device, and the semiconductor temperature control device is communicated with a first connector of the first three-way valve and an inlet of the main equipment. By arranging the lithium bromide absorption refrigeration device, heat, brought by the semiconductor temperature control device, of a client side can be reused, the temperature of a secondary refrigerant entering the semiconductor temperature control device can be reduced, and therefore the heat load of heat exchange equipment and the energy consumption of a compressor are reduced; and meanwhile, the cold energy generated by the lithium bromide absorption type refrigeration device can also cool a factory service water system of the client side, and the load of factory service water of the client side is reduced. The flow of the secondary refrigerant entering the lithium bromide absorption refrigeration device is accurately controlled through the first three-way valve, and then the temperature of the secondary refrigerant entering the water tank is accurately controlled.

This utility model relates to the field of lithium bromide solution technology and discloses a lithium bromide heat pump device utilizing waste heat from circulating water. The device includes a tank body and a lid on top of the tank body. A partition is fixed to the inner wall of the tank body, and three filter elements are installed inside the partition. A disassembly assembly is located inside the partition, including a mounting plate fixed to the inner wall of the partition. The mounting plate has three threaded holes on its inner wall, and the filter elements have external threads on their outer sides. This utility model uses a lithium bromide absorption heat pump to externally connect to a filter tank for processing lithium bromide solution. The three filter elements installed inside the filter tank allow for filtration of the used lithium solution, effectively adsorbing impurities and enabling the lithium solution to be recycled. The filter tank has a flange-connected, detachable structure, consisting of a tank body and a lid. The disassembly assembly facilitates timely replacement of the filter elements installed inside the tank, making operation simple and convenient.

The utility model relates to the technical field of lithium bromide production, and discloses a boiler flue gas purification and waste heat recovery device which comprises a boiler, the surface of the boiler is communicated with an exhaust pipe, a heat exchange shell is fixed to the surface of the exhaust pipe, one side of the surface of the heat exchange shell is communicated with an air inlet cylinder, the other side of the surface of the heat exchange shell is communicated with an exhaust cylinder, and the exhaust cylinder is communicated with an exhaust pipe. A heat exchange mechanism is arranged on the surface of the heat exchange shell, an exhaust mechanism is arranged on the surface of the exhaust barrel, and a temperature device used for assisting the heat exchange mechanism is arranged in an inner cavity of the exhaust barrel. In daily use of the boiler, heat in the exhaust pipe can be absorbed under the action of the heat exchange mechanism, and the heat is discharged through the exhaust mechanism, so that the heat can act on drying equipment in the next step, and the effects of secondary utilization of the heat, energy conservation and emission reduction are achieved; and in addition, under the structural arrangement of the heat exchange mechanism and the exhaust mechanism, air becomes clean hot air after indirect heat exchange, and product pollution is avoided.

The application relates to a cooling system for NMP rectification, which comprises a condenser, a cooling tower, a lithium bromide cooling unit and a cooling water storage tank, the lithium bromide cooling unit is internally provided with an evaporation area, a liquefaction area and a throttle valve, rectification tower steam condensate outside the lithium bromide cooling unit passes through the evaporation area and is connected with the cooling tower, a circulating water pool is arranged at the bottom of the cooling tower, the cooling tower and the circulating water pool are both connected with the liquefaction area, a feeding port and a discharging port are arranged on the condenser and used for conveying NMP materials, a liquid inlet and a liquid outlet are arranged on the condenser, the liquid outlet is connected with the throttle valve inside the lithium bromide cooling unit, a liquid inlet pipe is arranged between the liquid inlet and the throttle valve, and the cooling water storage tank is arranged on the liquid inlet pipe. The application can improve the purification effect of NMP recovery.

The present application relates to the technical field of waste heat recovery collaborative calculation, and discloses a lithium bromide heat pump waste heat recovery collaborative management system based on distributed computing power. The system is composed of edge computing power devices distributed at each heat pump device and a collaborative management device. The collaborative management device establishes a device connection topology graph and issues a unified data collection template, so that each edge node collects and stores data according to the specification. The system splits the analysis task into multiple computing stages according to the topology graph and dynamically allocates them to each node. Each node uses local data and intermediate results transmitted from adjacent nodes to perform calculations and transmits the results along the topology path to form a cross-device pipeline collaborative calculation. This scheme unifies data specifications from the source, optimizes the scheduling of computing power along the device network and task collaboration, reduces data transmission volume, and improves the analysis and optimization efficiency and real-time performance of the whole system.

The invention relates to the technical field of biological material processing, in particular to a preparation method of a silk-based double-layer composite guided bone regeneration film, which comprises the following steps: S1, degumming, washing and drying wet silkworm cocoon slices to obtain degummed fibroin fibers; s2, dissolving the degummed silk fibroin with a lithium bromide solution, and dialyzing to obtain a silk fibroin aqueous solution; s3, putting the degummed fibroin fiber obtained in the step S1 into an aqueous solution, and performing high-speed shearing treatment to obtain a micro-nano fibroin fiber homogeneous solution; and S4, pouring the homogeneous solution on the surface of the high-toughness silk-based smooth film, and drying to form a micro-nano fiber layer. Freeze-drying / spinning is replaced with a high-speed shearing method, the process is shortened, sewage discharge is reduced, and high-salt dissolution and long-term dialysis are not needed; the bonding layer is subjected to silk fibroin solution and HFIP dual treatment, and the problem that the porous layer falls off in a body fluid environment is solved.

The utility model relates to a lithium bromide absorption unit of double-effect refrigeration and single-effect heating, which is based on a steam double-effect lithium bromide absorption water chiller with solution parallel circulation, a heat pump generator is additionally arranged in the low-pressure generator and the condenser cylinder, the heat pump generator is arranged between the low-pressure generator and the condenser, a condensate heat exchanger for the heat pump is separately arranged, and switching and adjusting valves are additionally arranged between the pipelines connecting the components. Through the switching and adjusting of the valves, the double-effect refrigeration cycle and the single-effect heating cycle can be safely, stably and reliably operated on the same unit, the initial investment of the equipment is reduced, the management cost of the equipment is saved, the land occupation of the equipment is saved, the annual operation rate of the unit is improved, the unit has wider adaptability and can be designed in a large size. The unit can meet the air conditioning and production process use through double-effect refrigeration in summer and can recover waste heat for heating through single-effect heat pump in winter, is very energy-saving and environment-friendly, and has very good economic and social benefits.