10776 results about "Environmentally friendly" patented technology

The present invention discloses a water-based emulsion of PHA, PBAT and PVOH and its application in paper-based barrier coatings. This emulsion is prepared by first melt-blending PHA and PBAT at 150-170 °C and then dispersing them into an aqueous PVOH solution at 80-95 °C. Plasticizers, cross-linking agents and surfactants can be added to improve the performance. After coating on paper and drying at 80-150 °C, a barrier film with a Cobb value of 10-15 g / m² and a Kit ≥ 10 grade is formed. Compared with traditional PE film laminating or fluorine-containing coatings, this system is more environmentally friendly and recyclable; PVOH dissolves in pulping water, PHA and PBAT are easily separated, and fibers can be efficiently recovered; in composting, soil and marine environments, PHA and PBAT have extensive biodegradability and are superior to PLA which is difficult to recycle and requires industrial composting. It is applicable to food, industrial, special packaging and agricultural paper products.

The invention relates to the technical field of micro-grid energy dispatching, in particular to a micro-grid energy dispatching carbon emission reduction system based on reinforcement learning dual-objective optimization. The data acquisition module is used for acquiring information such as equipment energy consumption data, environmental parameters and carbon emission coefficients in the micro-grid in real time; the data processing module is used for cleaning acquired data, extracting features and performing standardization processing; the intelligent scheduling module is used for extracting information features and a deep reinforcement learning algorithm, optimizing by using a model to obtain an optimization strategy, and forming a scheduling instruction set; the execution feedback module is used for dynamically scheduling the operation state of equipment in the micro-grid according to the scheduling instruction set; the man-machine interaction module provides a user interface and is used for displaying the carbon quota use condition and the system operation state and allowing a user to input an adjustment demand; compared with the prior art, the energy system of the park is used as a unified network, mutual influence of multiple systems is considered, accurate scheduling is achieved, environmental protection and high efficiency are achieved, and the operation cost is reduced.

The invention discloses an operation balance optimization method for a waste incineration thermal power plant. Efficient and environment-friendly waste treatment and green energy recovery are achieved through regulation and control of core parameters. Comprising an intelligent control system, a carbon cyclic utilization technology and a flue gas purification technology, an optimization model taking comprehensive net income maximization and carbon emission intensity minimization as targets is constructed, a garbage heat value, incinerator temperature, steam parameters, power generation efficiency, station service power consumption rate and the like are selected as core parameters, an operation balance optimization target function is constructed, and the comprehensive net income maximization and the carbon emission intensity minimization are realized. And through an intelligent control system, key parameters such as the incinerator temperature, the excess air coefficient and the flue gas treatment temperature are monitored and adjusted in real time, it is ensured that garbage is fully combusted in the incinerator, harmful gas emission is reduced, and the power generation efficiency is improved. Compared with the prior art, efficient operation of the waste incineration thermal power plant and maximum utilization of green energy are achieved, and remarkable economic and environmental benefits are achieved.

The invention relates to a geopolymer-based non-expansive building fireproof coating, and belongs to the field of building materials. A geopolymer prepared from fly ash, granulated blast furnace slag, coal gangue, oil shale waste residues and sodium silicate water glass is used as a binder, and expanded perlite is used as a heat insulation filler to prepare the inorganic building fireproof coating. Meanwhile, tailings and basalt fibers are added, so that the contractibility and integrity of the geopolymer-based fireproof coating are improved. Compared with an organic fireproof coating, the environment-friendly fireproof coating has high environment friendliness in the production and preparation process and the use and action process in the case of a fire disaster. Compared with a traditional Portland cement-based fireproof coating, the fireproof coating has more excellent performance in the aspects of high temperature resistance, corrosion resistance and the like. According to the invention, the way of resource utilization of solid wastes is widened, and the building fireproof coating with excellent performance is provided.

The invention discloses a small waste incineration full-automatic control system and method, and particularly relates to the technical field of solid waste treatment.The method comprises the following steps that waste throwing is recognized through infrared induction, a preheating device is started to heat a combustion chamber, and the heating intensity is adjusted in real time; when the temperature reaches a preset threshold value, the air volume, the feeding time and the combustion time are controlled according to the garbage type, and stable combustion is achieved; the concentration of carbon monoxide, nitric oxide and particulate matter in tail gas is monitored in the whole process, and combustion parameters are automatically adjusted when the emission limit value is close; after combustion is finished, slag is automatically discharged according to the amount of slag; meanwhile, temperature and emission data are collected and uploaded to a remote terminal, and full-process intelligent control and environment-friendly management are achieved; the whole-process automatic control is realized, and the manual dependence is reduced; combustion efficiency and adaptability are improved through an intelligent model; an emission prediction and feedback mechanism is introduced to ensure that the tail gas is environmentally friendly and reaches the standard, and the system stability and the intelligent level are enhanced.

Disclosed are methods for enhancing recycled polymer materials for use in manufacturing film / sheet products involves obtaining a polymer starting material for recycling, heating it through melt compounding and / or extrusion processes, and incorporating modifiers such as ethylene / acrylate copolymer, ethylene / acrylate / glycidyl methacrylate terpolymer, and ethylene / glycidyl methacrylate copolymer before extrusion. The resulting modified recycled material can substitute for PVC or other virgin polymers in producing extruded film / sheet products or molded goods. This method enables the creation of mono-layer or multi-layer film / sheet products with improved properties, contributing to sustainable and environmentally friendly manufacturing practices.

The invention provides a supramolecular hydrogel packer constructed by interaction of a subject and an object as well as a preparation method and application of the supramolecular hydrogel packer, and belongs to the technical field of drilling fluid packing. The supramolecular hydrogel packer constructed by interaction of the subject and the guest comprises the following raw materials in percentage by mass: 12-36% of a copolymerization monomer, 6-10% of a tannic acid grafted polysaccharide aqueous dispersion, 0.5-1.5% of an initiator, 0.3-0.6% of a cross-linking agent and the balance of water, the total amount of the components is 100%. The raw materials are cheap, easy to obtain, simple in composition, low in cost, green, safe and environment-friendly; the preparation method is simple, mild in condition and easy to implement. After crosslinking, the obtained packer has excellent mechanical properties, temperature and pressure resistance and outstanding pH degradation capability, and can effectively pack a crude oil reservoir to form an integral sealing interlayer, so that heavy oil entering a shaft is reduced; meanwhile, degradation of the hydrogel can be effectively realized, and deblocking is achieved.

The invention discloses a high-cold-resistance environment-friendly PVC decorative material and application thereof, belongs to the technical field of PVC preparation, and is used for solving the technical problem that the low temperature resistance and the environmental protection property of a PVC material in the prior art need to be further improved. The high-cold-resistance environment-friendly PVC decorative material specifically comprises the following raw materials in parts by weight: 80-100 parts of composite PVC, 8-10 parts of a bio-based plasticizer and 6-10 parts of an auxiliary additive; the preparation method comprises the following steps: modifying montmorillonite by using a silane coupling agent, loading magnesium hydroxide to prepare a composite filler, carrying out ring-opening polymerization, amine end capping and oxidation on cyclotrisiloxane to generate a low-temperature-resistant agent containing an epoxy group, introducing trimethoxysilane into PVC through sulfydryl substitution, carrying out hydrolytic condensation to form a Si-O-Si cross-linked network, and covalently binding the Si-O-Si cross-linked network with the filler and the low-temperature-resistant agent to obtain the low-temperature-resistant PVC composite material. And reacting the epoxidized soybean oil with glycine, and carrying out calcium coordination to generate a bio-based plasticizer, thereby finally preparing the PVC decorative material.

The invention discloses a high-entropy alloy / nitrogen-doped carbon nano catalytic material and a preparation method and application thereof.The nano catalytic material comprises a high-entropy alloy composed of five non-noble metals including Fe, Co, Ni, Cu and Mn and nitrogen-doped carbon synthesized with the assistance of MOF, the non-noble metal high-entropy alloy serves as a main body material, the nitrogen-doped carbon serves as a carrier material, and the nitrogen-doped carbon serves as a carrier material. A non-noble metal high-entropy alloy is loaded on nitrogen-doped carbon to construct a novel nano catalytic material, and the novel nano catalytic material is used for activating peroxydisulfate to remove antibiotics in a water body. The catalyst has the advantages of excellent chemical stability, good reusability and the like and is a novel nano catalytic material with efficient catalytic performance and environment-friendly characteristics, and the preparation method has the advantages of being simple in operation process, green, environmentally friendly, economical, feasible and the like and can be used for large-scale preparation.

The invention belongs to the technical field of tungsten smelting, and particularly discloses a method for recycling tungsten from tungsten smelting soda boiling slag through reselection, tungsten in the slag is recycled through a physical mineral separation method, a large number of acid-base reagents are not introduced, acid-base wastewater is not generated, and high-energy-consumption roasting or high-temperature acid-base leaching is not needed. The process is simple, large-scale treatment can be achieved, reagent consumption is low, energy consumption is low, closed-loop circulation of mineral separation water can be achieved, no wastewater is discharged, the process is environmentally friendly and free of pollution risks, meanwhile, indexes of the soda boiling residues subjected to innocent treatment can reach industrial solid waste, hazardous waste is converted into common solid waste, and the economic benefit is high. The environment-friendly treatment cost is low.

The invention discloses an optimal control method for a straw pyrolysis carbonization process. The method comprises: performing multipoint temperature real-time acquisition and data processing on a carbonization zone of a carbonization furnace, obtaining temperature information and calculating a deviation from a preset ideal temperature curve (S01); dynamically adjusting an operating parameter of the combustion zone using a control algorithm based on the temperature deviation (S02); performing on-line monitoring on the flue gas components (S03); and regulating and controlling the return air flow and the secondary air supply amount of the combustion area in a linkage manner according to the flue gas monitoring result so as to optimize combustion and energy recovery (S04). Through accurate and intelligent process control, efficient, environment-friendly and high-valued utilization of the straw carbonization process is realized.

The invention relates to the technical field of biological enzymes. The invention provides a biological enzyme gene capable of producing beta-pinene and application of the biological enzyme gene. The biological enzyme gene comprises one or more of TPS1, TPS2, TPS3 and TPS4. The gene disclosed by the invention can be used for preparing a biological enzyme for efficiently catalyzing and producing beta-pinene, and the biological enzyme is used as a catalyst, so that the yield of beta-pinene can be increased, and an efficient, environment-friendly and sustainable production mode is realized. The method can become an important production way of beta-pinene in the future, and has a wide application prospect in industrial production and other fields.

The invention provides a virulent bacteriophage and application thereof, the virulent bacteriophage is named as vBVpaPChan1 and has been preserved in China Center for Type Culture Collection on December 10, 2024, the preservation address is Wuhan University, Wuhan, Hubei, China, and the preservation number is CCTCC M 20242772. The bacteriophage is safe, environmentally friendly and free of toxic and side effects, and compared with known bacteriophages, the bacteriophage is short in incubation period, large in outbreak amount and capable of effectively killing diseases caused by vibrio parahaemolyticus chan02.

The invention belongs to the field of environment-friendly gas purification and energy conservation, and discloses a desulfurization and decarbonization method and system. The desulfurization and decarbonization system comprises a flue gas absorption system and an amine liquid regeneration system, the flue gas regeneration system comprises an absorption tower, a high-temperature rich and lean liquid heat exchanger, a low-temperature rich and lean liquid heat exchanger and a heat pump system; the amine liquid regeneration system comprises a regeneration tower, a thermal coupling reboiler, a high-pressure reflux tank, a reboiler, a low-pressure flash tank, a barren liquor low-temperature cooler and a steam flash tank. The desulfurization and decarbonization method comprises the following steps: in an absorption tower, performing countercurrent contact on amine liquid and raw material gas, and absorbing acid gas in the raw material gas to generate an amino salt compound, so as to obtain amine-rich liquid; the amine-rich liquid enters a regeneration low-pressure tower and a regeneration high-pressure tower, the amino salt compound is regenerated to release acid gas to generate amine liquid, and the amine liquid returns to the absorption tower. By utilizing a high-low pressure regenerative thermal coupling technology and a heat pump technology, the energy consumption of the system is effectively reduced, the overall absorption efficiency is improved, and the equipment investment and site arrangement are saved.

The invention relates to hybrid fiber reinforced ultrahigh-performance geopolymer concrete as well as a preparation method and application thereof. Slag, metakaolin and silica fume are used as precursor materials of geopolymer concrete, a sodium hydroxide-water glass solution is adopted to compound an alkali activator, and steel fibers, polyvinyl alcohol fibers and modified glass chopped fibers of different sizes are mixed and doped, so that the brittleness of the geopolymer concrete is remarkably improved, and the service life of the geopolymer concrete is prolonged. The early strength and the high temperature resistance are improved. The hybrid fiber reinforced ultrahigh-performance geopolymer concrete has the characteristics of low carbon emission, ultrahigh strength, high temperature resistance, high durability and the like, and can meet the use of the geopolymer concrete in actual engineering. According to the ultrahigh-performance geopolymer concrete, solid waste resources are utilized at the same time, carbon emission in the concrete production process is reduced, and the ultrahigh-performance geopolymer concrete is environmentally friendly, low in carbon, ultrahigh in strength, easy to prepare and capable of being suitable for complex environmental engineering structures such as tunnels, bridges and high-rise buildings.

The invention provides an environment-friendly cyanide-free gold leaching agent and a technology for extracting gold in electronic waste through the environment-friendly cyanide-free gold leaching agent, and belongs to the technical field of hydrometallurgy. A series of environment-friendly cyanide-free gold leaching agents are prepared by designing the environment-friendly cyanide-free gold leaching agents, using non-toxic and renewable biomass resources as raw materials, optimizing the molecular structure level of the raw materials through a series of derivatization means and introducing specific functionalized molecular groups. The problem that an existing cyanide-free leaching agent is difficult to treat electronic waste is solved. On the premise that technology feasibility is met, balance of economy and environment is achieved to the maximum extent, the gold leaching technological process is simple, operation is convenient, the gold leaching technological process conforms to original facilities of existing enterprises, and extra equipment upgrading cost does not need to be input.

The invention relates to an environment-friendly container type digital energy air compression station based on air floating shaft driving, and belongs to the technical field of digital energy air compression stations. A ventilation and heat dissipation module of an air treatment system is designed to comprise an airflow distribution modeling unit, an adjustable fan array, a distributed sensor network and an intelligent control unit; the airflow distribution modeling unit generates an initial airflow distribution diagram in a container body through computational fluid mechanics simulation based on container structure parameters, arranges an adjustable fan array in an airflow distribution non-uniform area in the container body according to the airflow distribution diagram, deploys a vector fan in a dead area, feeds back data in real time in combination with a sensor network, and establishes an airflow distribution model in the container body. A nonlinear relation function of the temperature, the airflow speed and the fan rotating speed is output and established, an airflow dead zone is eliminated, a temperature field in the box is balanced, and the problem that in the prior art, when an axial flow fan and a flow guide plate are arranged for ventilation and heat dissipation, system heat dissipation is insufficient is solved.

Interlocking construction blocks of a type that can be used as part of a system for building various structures, such as walls. An individual block provides positive intermeshing with other blocks abutting thereto and positive interlocking with other blocks stacked thereon, forming a joint that allows the abutting blocks to be held together without the need for mortar. Interlocked blocks are capable of providing a barrier against horizontal water seepage along the joints from one side of the interlocked blocks to the opposite side. The blocks provide a relatively light-weight structural unit while still providing good structural strength against horizontal and vertical loads. The blocks may be formed at least partly of recycled waste material(s) and / or may themselves be made of materials that can be easily recycled, thereby providing an environmentally friendly construction material that may have a reduced carbon footprint compared to other construction block systems.

The invention discloses an environment-friendly cable and a preparation process thereof, and relates to the technical field of cable manufacturing, the environment-friendly cable comprises a barrier strip, the inner side surface of the barrier strip is fixedly connected with a polyethylene pipe, the inner side surface of the polyethylene pipe is fixedly connected with a spiral sheet, and the inner side surface of the spiral sheet is fixedly connected with a wire core. The fixed connection mechanism is used for leading-in and leading-out of cooling gas between the wire core and the polyethylene pipe and insulation protection of the surface of the wire core. According to the environment-friendly cable and the preparation process thereof, the fixed connection mechanism conveys cooling gas into each polyethylene pipe at the same time, the cooling gas flows along the spiral sheet so as to rapidly take away heat on the surface of the cable core, the gas directionality is higher through the gas flow channel of the spiral structure, and therefore the efficiency of taking away the heat carried by gas flowing is higher, and the service life of the cable is prolonged. The flame-retardant mechanism blocks the outer side surface of the polyethylene pipe, so that the cable is not liable to be on fire and is easy to be subjected to flame retardance during fire.

The invention provides a preparation method of an environment-friendly high-performance gas barrier film, which is characterized in that a solution blending method is adopted to prepare a polyvinyl alcohol / nanocellulose / covalent organic framework nanosheet ternary composite system, and a coating method is adopted to prepare the high-performance gas barrier film under high-temperature evaporation. Multidimensional mixed nanocellulose and covalent organic framework nanosheets are introduced as functional fillers to form a stable intercalation structure with a polyvinyl alcohol matrix, so that the interfacial compatibility of the components is remarkably improved. The multi-component gas barrier film is endowed with high humidity resistance, chemical stability, high gas barrier property and the like by regulating and controlling the heat treatment temperature, the environment-friendly gas barrier film material shows good application prospects in the fields of chemical protective clothing and the like, and a new thought is provided for development of high-performance protective materials.

The invention relates to a cultivation nutrient medium and a preparation method thereof. According to the nutrient medium, peat is completely abandoned, the coco coir, the straw and the biochar are combined to reduce ecological burden, the nutrient medium is an environment-friendly medium, the biochar fixes carbon and reduces emission, and the soil structure can be improved after long-term use; vermiculite improves the water-holding capacity, perlite and straw form a stable pore structure, and the ventilation porosity reaches 25% or above. Wormcast and a microbial agent synergistically release nitrogen, phosphorus and potassium, and the fertilizer efficiency is lasting. The microbial agent can inhibit soil-borne diseases such as fusarium and reduce the death rate of cultivated seedlings. The biochar adsorbs salt and toxins, and the EC value is stabilized at 1.2-1.8 mS / cm. The cost of the selected raw materials is reduced by 35% compared with that of a traditional substrate, and the substrate is suitable for large-scale production, suitable for vegetable seedling culture, potted flowers, organic farms and soilless culture systems, and especially suitable for saline-alkali soil or continuous cropping obstacle areas.

The invention relates to the technical field of environment-friendly additives, and discloses an environment-friendly additive for soil pollution remediation and an application method thereof.The environment-friendly additive is prepared from 5-20 parts of nano zero-valent iron, 2-15 parts of a nano carbon material and 3-18 parts of a nano mineral composite material; 5-25 parts of biochar, 2-10 parts of microbial flora and 1-10 parts of a plant source extract; 1-8 parts of a pH responsive material; 2-10 parts of a microcapsule material; the particle size range of the nanoscale zero-valent iron is 10-100 nm, and SiO2 or C is coated on the surface of the nanoscale zero-valent iron; the nano carbon material is selected from activated carbon nanoparticles, graphene and carbon nanotubes. The carbon-coated nano zero-valent iron is adopted, so that the technical effects of improving the oxidation resistance of the material and prolonging the active life are achieved. Compared with a traditional technical scheme without coating nZVI, the problems that the composite material is prone to oxidation inactivation and insufficient in long-term repair capacity are solved, and the composite material has more stable heavy metal removal performance in a complex environment.

The invention belongs to the technical field of machine vision positioning and guiding, and discloses a nanocrystalline magnetism isolating sheet vision guiding laser deburring device and application thereof, and the nanocrystalline magnetism isolating sheet vision guiding laser deburring device comprises an image acquisition module, an image preprocessing module, a central control module, a laser module, a positioning module, a collection module, a data analysis module and a display module; according to the visual guidance technology, an advanced visual recognition system is introduced, the burr position is accurately positioned by monitoring the surface state of a workpiece in real time, and therefore the more intelligent laser deburring process is achieved. And laser parameter optimization: parameters such as wavelength, power and pulse frequency of laser are optimized according to different materials and burr types, so that the optimal deburring effect is achieved, and meanwhile, the completeness of the workpiece is ensured. And in the laser deburring process, environment-friendly materials and technologies are adopted, the influence on the environment is reduced, and the safety in the operation process is enhanced.

To provide an ice pack bottle having a simple structure, being easy to carry, having excellent cooling effect, and being reusable. [Solution] The ice pack bottle comprises a container body 1, an outer lid 2, a sealing ring 3, an inner lid 4, an inner container 5, and a fitting member 6. It has a simple structure and an appearance similar to an insulated bottle. The container body has a double-layer vacuum insulation structure, making it easy to carry and providing excellent cooling effect. The inner container is removable and reusable, saving costs and being environmentally friendly.

The invention relates to the field of atmospheric control and pollution abatement, in particular to high-concentration environment-friendly flue gas desulfurization and dust removal equipment. Comprising a tower shell, the tower shell is provided with an air inlet, the upper side of the tower shell is fixedly connected with a ventilation cylinder through a support, the upper side of the ventilation cylinder is fixedly connected with a top disc, the top disc is provided with an exhaust port, and the lower side of the top disc is provided with liquid spraying pipes distributed in the circumferential direction. The ventilation cylinder and the tower shell form an air inlet cavity communicated with the air inlet, the lower side of the tower shell is provided with a liquid outlet used for discharging liquid in the tower shell, the lower part of the inner wall of the ventilation cylinder is provided with a first filter screen used for removing dust, and the diameter of the ventilation cylinder is gradually reduced from the middle to the bottom. According to the invention, the ventilation cylinder is set to be wide at the top and narrow at the bottom, and is matched with the spiral distribution of the gas guide holes, so that flue gas is uniformly distributed in the ventilation cylinder, the contact area between the flue gas and lime slurry is increased, and the desulfurization efficiency of high-concentration flue gas is improved.

The invention discloses a gas-sensitive material for monitoring an environment-friendly gas characteristic substance CO as well as a preparation method and application thereof, and relates to the technical field of gas-sensitive materials. The preparation method comprises the following steps: dissolving tin tetrachloride pentahydrate, sodium hydroxide and polyvinylpyrrolidone, adding ammonium fluoride, reacting at 155-165 DEG C, drying the product, and calcining at 295-305 DEG C to obtain SnO2 nanoparticles; the preparation method comprises the following steps: performing ultrasonic mixing on SnO2 deionized water dispersion liquid and MoS2 nanosheet ethylene glycol dispersion liquid, and then drying to obtain the MoS2 / SnO2 composite material with a mesoporous hollow nanotube structure, and the volume ratio of ethylene glycol to deionized water is (0.9-1.1): 1. The MoS2 / SnO2 gas sensitive material has the advantages of low density, high pore volume, large specific surface area, high structural stability and the like. And when applied to a CO resistive sensor, the catalyst has good CO selectivity, high sensitivity and good long-term stability.

The utility model discloses a self-dedusting device for an environment-friendly gas insulated ring main unit, which comprises a bottom plate, two springs and two automatic telescopic rods are fixedly connected to the upper surface of the bottom plate, a mounting frame is fixedly connected to the upper ends of the springs, a brush is arranged on the surface of the mounting frame, and the cleaning end of the brush is in close contact with the heat dissipation position of the insulated ring main unit. The upper end of the automatic telescopic rod and the lower surface of the mounting frame are fixedly connected with an electromagnetic block and a magnetic suction plate respectively, the electromagnetic block makes close contact with the magnetic suction plate, positioning plates are arranged on the left side and the right side of the bottom plate and make close contact with the inner wall of the insulating ring main unit, and the upper end of the front surface of each positioning plate is fixedly connected with an air blower. Lead screws are fixedly connected to the left surface and the right surface of the bottom plate, the ends, away from the bottom plate, of the lead screws make close contact with the positioning plate, and butt joint mechanisms are arranged between the lead screws and the positioning plate. Through the device, the dust removal convenience is improved, and the influence of the dust removal device on the maintenance work of the insulating ring main unit is reduced.

Provided in the present application are a bio-based fluoride-free waterproof agent, and a preparation method therefor and the use thereof. In the present application, firstly, a bio-based monomer is added into a reaction; secondly, a rosin-based amino acid surfactant is introduced, which is a bio-based ampholytic surfactant, has the advantages of good decontamination, resistance to hard water and being stable to an acid and an alkali and has the performances of sterilization, corrosion prevention, static electricity resistance, etc.; and finally, a lignin-furfural bio-based resin is added after the reaction, which resin is a new furfural bio-based resin, can be uniformly cross-linked on the surface layer of a yarn to adhere fiber ends to the yarn, and has a relatively strong adhesive force, such that the resin can bond the fibers, thereby limiting the movement of the fibers. The raw materials of the fluoride-free waterproof agent prepared in the present application are derived from bio-based products and are completely biodegradable in the natural environment, such that the fluoride-free waterproof agent is environmentally friendly and safe, thereby increasing the regenerative and environmentally friendly values of the product and having significant social benefits and wide market prospects.

The invention discloses a BOE waste liquid treatment method and device. The method comprises the following steps: replacing hydrogen fluoride in BOE waste liquid with sulfuric acid, evaporating, fractionating and recovering hydrofluoric acid, neutralizing evaporated residual liquid with ammonia to obtain a fluorine-containing ammonium sulfate solution, defluorinating with fluorgypsum slurry to obtain a low-fluorine ammonium sulfate solution, and concentrating and crystallizing to obtain an ammonium sulfate product. The BOE waste liquid is treated by adopting the scheme, the bottleneck of the market capacity of ammonium bifluoride is avoided, the hydrofluoric acid product and the ammonium sulfate product with huge market capacity are produced, the value orientation of turning waste into wealth, circular economy and environmental protection is really realized, and the method is suitable for industrial popularization and application.

The invention belongs to the technical field of simulation analysis, and particularly relates to a medium-voltage environment-friendly gas insulation switch cabinet temperature field modeling method, which comprises the following steps: constructing a three-dimensional geometric model of a switch cabinet and carrying out simplification processing; the COMSOL multi-physics field simulation software is imported; electromagnetic-thermal bidirectional coupling modeling is carried out; adding a surface-to-surface radiation physical field; determining a fluid flow state based on a Glassu number, and selecting a corresponding fluid dynamic model; environment conditions are set, and radiant heat exchange power and a convective heat exchange coefficient are calculated; establishing a grid division strategy based on temperature contribution to obtain a simulation model of preliminary modeling; solving and post-processing a solving result, and analyzing hot spot distribution by using a temperature distribution diagram; a thermocouple is installed in a hot spot area in an actual switch cabinet, actual temperature data are obtained through measurement, and the simulation model subjected to preliminary modeling is corrected according to the actual temperature data. The temperature rise condition can be accurately predicted, and a powerful guarantee is provided for safe operation of equipment.