48 results about "Chemical dissolution" patented technology

This invention belongs to the field of hydraulic structure analysis technology, specifically disclosing a gravity dam coupling analysis method, system, electronic equipment, and storage medium, including: models describing water flow in concrete, the relationship between water pressure and stress, the dissolution reaction process, and the coupling of ion diffusion with water flow. By acquiring influencing variables, parameters of each model are correlated, and a solubility function considering performance parameters is established and dynamically updated. The solubility function is iteratively trained using experimental data to construct a finite element model, and simulations are performed based on the trained function. Early warnings are generated based on the simulation results to predict the concrete deterioration process and optimize maintenance decisions. It has the following advantages: by coupling multiple models such as water flow, chemical dissolution, and hydraulic fracturing, the long-term deterioration process of concrete under the action of water flow and dissolution is accurately simulated. The introduction of a solubility function and dynamic updating of material parameters, considering time-varying deterioration effects, comprehensively improves the accuracy of deterioration prediction and simulation results.

This invention discloses an energy-saving cleaning device for recycling waste plastics, belonging to the field of plastic recycling technology. It includes a first cylinder and a second cylinder. A feed hopper is installed at one end of the first cylinder, and a friction roller is installed inside the first cylinder. In this invention, a spray assembly is installed inside. This design enables the spraying of a degumming agent during the recycling and cleaning of plastic bottles. Simultaneously, the sliding plate moves along a linkage connecting rod, causing the sprayer to oscillate and increasing the spray coverage area. This allows for the complete removal of labels and adhesive residue from the plastic bottle surface through physical friction and chemical dissolution, solving the problem of adhesive residue residue in conventional cleaning. Furthermore, the movement of the sliding plate uses pushing teeth to directionally push the peeled labels and adhesive debris, allowing them to be discharged from one end of the collection tank, preventing debris from accumulating in the second cylinder and causing secondary pollution.

This invention discloses a combined process for restoring reservoir drainage and gas production channels using high-pressure drive and chemical dissolution, relating to the field of efficient oilfield exploitation technology. The process includes: S1, conducting production profile testing and sampling analysis of blockages in the target gas well to determine the type, distribution location, and reservoir physical parameters of the blockages, and preparing a corresponding chemical dissolving agent based on the analysis results. This invention couples the mechanical fracture-creating effect of high-pressure pulsed fluid with the cavitation effect and vibrational mass transfer effect of ultrasound. Based on the initial dissolution of blockages by the chemical dissolving agent, the stress waves generated by the high-pressure pulse expand the reservoir microfractures. Simultaneously, the collapse of microbubbles generated by ultrasound enhances the dissolution reaction rate, and the vibration promotes the dissolving agent's penetration into the micropores, achieving a synergistic effect of chemical dissolution and physical displacement, thoroughly removing blockages from the pore throats, and avoiding secondary precipitation of dissolution products.

The invention discloses a method for preparing a methanol catalyst by using recycled waste copper-based red mud oxygen carriers, and belongs to the technical field of waste oxygen carrier recycling and catalyst preparation. The method comprises the specific steps that the waste copper-based red mud oxygen carrier is subjected to a combined process of microwave fluidized bed roasting and ball-milling enhanced magnetic separation, focused ultrasound-assisted electrochemical dissolution and deposition, Joule thermal shock-assisted acid leaching and alkali precipitation, and cascade recovery of multiple metal resources is achieved; the problem of paid stockpiling or landfill treatment of the waste copper-based red mud oxygen carrier at present is solved, and the defects that when a pure wet method or a pure pyrogenic method is adopted for recycling, metal to be recycled and miscellaneous elements are mutually dissolved, the acid leaching efficiency of oxidation-state metal is low, and waste is caused due to the low utilization rate of part of elements are overcome. According to the method, appropriate metal of the waste copper-based red mud oxygen carrier is used as a raw material for replacing the synthesized copper-based methanol catalyst, the prominent effect that waste metal materials enter a production chain again for additive manufacturing is achieved, and remarkable economic benefits and environmental protection benefits are achieved.

The present application relates to a kind of large volume aperture ratio thin-walled semi-closed complex structure parts of multi-energy field coupling chemical mechanical polishing equipment and method.It includes rack, spindle system, polishing cylinder, multi-field trigger device and numerical control system, spindle system is connected with the clamp for clamping to be polished piece, spindle system is used to adjust the spatial position of spindle, so that to be polished piece enters into polishing cylinder and is immersed in polishing liquid, polishing cylinder is used to contain chemical mechanical polishing liquid and magnetic abrasive, the multi-field trigger device includes at least one of ultrasonic generator, magnetic field generating device, light source, before processing, the entrance of to-be-polished part is added with the preset amount of chemical mechanical polishing liquid and magnetic abrasive and keeps sealed state in polishing process.The present application is mainly removed by chemical dissolution, and the removal of oxide film and passivation film by micro abrasive under the action of fluid pressure is auxiliary, and the surface of part is scratch-free, and the possibility of crack and fatigue source generated by cyclic stress is excluded.

The present application relates to the technical field of mineralogy, and particularly provides a complex iron mineral distinguishing and quantifying method and an iron mineral content analysis method, which combines chemical dissolution, automatic mineralogy analysis and micro-area magnetic verification technology for the first time to realize the distinguishing and quantifying of complex iron minerals. The analysis method constitutes a closed and mutually checked analysis system, which combines acid treatment of carbonates, automatic mineralogy analysis of residual minerals, micro-area magnetic verification to correct the misjudgment of magnetic hematite, element surface scanning to check the accuracy of overall mineralogy quantification, and final calculation results, and checks the total iron content of chemical analysis to ensure the reliability of the final results and facilitate the standardized popularization and application.

The invention relates to the technical field of high polymer material processing and modification, and discloses a rapid material changing and cleaning method and system for a full-biodegradable multi-phase composite material, and the method comprises the following steps: a data interface module obtains front and back formulas and equipment state data containing a screw wear coefficient; the cleaning decision engine performs reasoning on data characteristics by using a machine learning model to generate a three-section type strategy including physical stripping, chemical dissolution and wetting and precise flushing; the formula execution module controls the feeding and granulating unit to execute the strategy according to the time sequence; and the online monitoring and feedback module judges whether the cleaning is qualified or the circulation is triggered based on the melt spectrum matching degree. A self-adaptive cleaning process is generated by combining formula differences and equipment abrasion states, three-section type time sequence operation is utilized to cooperate with physical shearing and chemical softening effects, and online spectrum closed-loop monitoring is matched, so that the problems that full-biodegradable materials are not thoroughly replaced and cleaned and the materials are wasted are solved, and efficient and automatic intelligent cleaning is achieved.

A wood board washing device, relating to the field of home furnishing product manufacturing, includes a conveyor frame, a wood board conveying assembly, a heating assembly, and a grinding assembly. The wood board conveying assembly includes a conveyor belt disposed inside the conveyor frame; the heating assembly includes a heating hood disposed above the conveyor belt; a spray head is provided at the feed end of the conveyor belt; and the grinding assembly includes a grinding drive motor and a grinding disc disposed above the conveyor belt. This invention uses a conveyor belt to transport wood boards requiring washing. The wood boards enter the bottom of the spray head and are first sprayed with a loosening agent or stain remover to chemically dissolve stains on the wood surface. Then, the heating hood heats the surface of the wood boards, softening the stains. Finally, the grinding disc grinds and cleans the softened stains, thoroughly removing any remaining stains from the wood board surface.

The invention discloses automatic fabric drying and measuring equipment and method, the equipment comprises a pre-drying device, a screening device, a cooling device, a weighing device, a classifying device and a control system, and the pre-drying device and the screening device are sequentially connected along the conveying direction of weighing bottles. And the cooling device conveys the weighing bottle downwards. The weighing device receives the weighing bottles so as to convey the weighing bottles to the classification device below the pre-drying device and the screening device. Samples dried in advance can be screened out in the drying process, so that the dried samples can be cooled and weighed once being dried, the internal space of the drying oven is saved, the drying efficiency is improved, drying of the samples and measurement after drying can be automatically completed, the drying and weighing processes in a chemical dissolution method are simplified, and the drying efficiency is improved. And the data of each weighing bottle is accurately analyzed through the control system, so that technical errors caused by manual operation during large-batch experiments are avoided, the time of experimenters can be saved to the greatest extent, the working efficiency of the experimenters is improved, and the accuracy of test results is improved.

The invention discloses a method for preparing low-aluminum high-grade iron ore concentrate for iron phosphate production by using pyrite cinder, and belongs to the field of high-value utilization of solid waste resources and preparation of new energy materials. The method sequentially comprises the steps of screening, pre-magnetic separation, ore grinding, two-stage acid leaching, low-intensity magnetic separation and reverse flotation; according to the method, a two-stage acid leaching process is adopted, and deep chemical dissolution of aluminum impurities which are difficult to remove by a traditional physical method is realized through the synergistic complexing effect of inorganic acid and organic acid and assisted by a leaching aid; by combining magnetic separation pre-enrichment and mixed amine cation reverse flotation accurate separation, the pyrite cinder is converted into low-aluminum high-grade iron ore concentrate with the total iron grade larger than or equal to 69% and the aluminum grade smaller than or equal to 0.10%, the iron recovery rate is high, the harsh requirement of an iron phosphate precursor for an iron source is met, and an efficient solution is provided for high-value utilization of bulk solid waste.

This invention discloses a method for evaluating the multiphysics coupling relationship in gas-driven oil extraction. The method includes: acquiring reservoir parameters and constructing a discrete topological space based on a graph data structure in memory; inputting the state vector into a physical information neural network surrogate model to perform phase transition dimensionality reduction calculations, outputting solid phase precipitation and viscosity fields; calculating dynamic real porosity by combining mechanical strain and chemical dissolution; generating a dynamic topology trimming operator based on percolation theory, modifying conductivity properties in the underlying memory to sever the mathematical connectivity of physical blockage zones; assembling a fully implicit Jacobian matrix based on the updated conductivity and iteratively solving it; finally, eliminating isolated dead zone volumes and generating an evaluation index containing a tensor of real sweep efficiency and phase blockage damage index. This invention eliminates the matrix singularity divergence problem, significantly improving simulation computing power and gas-driven evaluation fidelity.

The utility model relates to the technical field of freeze-dried powder production equipment, and particularly discloses a preparation device of lycium ruthenicum anthocyanin freeze-dried powder. Comprising a reaction tank, a tank cover is arranged at an opening in the upper end of the reaction tank, a pressure-bearing reaction cavity is formed in the reaction tank, a porous filter cartridge is coaxially arranged in the reaction cavity, and the inner space is divided into an extraction cavity and a precipitation liquid outlet cavity through the filter cartridge. Through the arrangement of the stirring and crushing mechanism, high-frequency shearing and crushing can be implemented through the stirring and crushing mechanism in the crushing and extracting stage, trapezoidal crushing teeth mechanically stir and cut materials at a set rotating speed, and the materials are synchronously matched with an ultrasonic vibrator to generate a cavitation effect; the synergistic effect of physical wall breaking and chemical dissolution of cell walls of lycium ruthenicum materials in the extraction cavity is achieved, and the release efficiency of anthocyanin is effectively improved. The problems that a traditional preparation device is long in extraction period, low in effective component release efficiency and prone to causing process breakpoints are solved.

The invention discloses an environment-friendly cyclic processing and recycling method for glass fibers, which comprises the following steps: S1, material recycling and pretreatment: obtaining a glass fiber composite material from a disassembled material, and removing a resin coating through sorting, mechanical crushing and gradient chemical dissolution to obtain pure recycled glass fibers; s2, plate preparation: mixing the recycled glass fiber with a bio-based nylon material; and S21, a composite felt is prepared through an airflow-mechanical composite net forming technology, and then the lightweight glass fiber board is obtained through multi-section type hot press forming. Or S22, the recycled glass fibers and the PC + PMMA material subjected to closed-loop recycling are subjected to hot-pressing composite forming; s3, back cover forming: adopting a one-step mold pressing process, taking the plate obtained in the step S2 as a base material layer, and performing one-time hot melting compounding on the base material layer, a spraying-free decorative layer and a functional layer to form a mobile phone back cover blank, and the mobile phone back cover is a composite plate; and S4, appearance treatment is conducted, specifically, spraying-free plastic containing special-effect pigment is molten on the surface.

The invention relates to the technical field of water purification systems, in particular to a water purification system and a water purifier. The water purification system comprises: a pretreatment branch, which is provided with a pre-purification device for pre-purifying raw water; the first end of the purification branch is communicated with the water outlet end of the pretreatment branch / the water outlet end of the pre-purification device; the purification filter element is arranged on the purification branch, and the purified water inlet end of the purification filter element is communicated with the second end of the purification branch; the acidification pulse flushing device is arranged to convey an acidification flushing medium to the purified water inlet end of the purification filter element in a periodic high-pressure pulse form; wherein the chemical dissolution effect of the acidizing flushing medium on the attachments on the surface of the purification filter element is cooperated with the hydraulic disturbance effect generated by the periodic high-pressure pulse water flow, and stripping of the attachments on the purification filter element is achieved. The flushing effect of the water purification filter element can be improved.

The application discloses a device for measuring metal electrochemical dissolution current efficiency, which comprises a reactor, a sample groove is formed on the upper surface of the reactor, liquid inlet holes and liquid outlet holes are respectively formed on the left and right sides of the reactor, the sample groove is communicated with the liquid inlet holes and the liquid outlet holes through liquid inlet auxiliary flow channels and liquid outlet auxiliary flow channels and forms a U-shaped channel, the liquid inlet holes and the liquid outlet holes are respectively connected with liquid inlet pipes and liquid outlet pipes, an anode hole which is communicated with the sample groove is formed on the front side of the reactor, an anode connecting post is arranged in the anode hole, a cover plate is arranged on the upper part of the reactor, a cathode hole which is corresponded to the sample groove is formed on the cover plate, and a cathode material is penetrated into the cathode hole. The device is compact in structure by arranging the reactor and designing the U-shaped channel in the reactor, a sealing ring is conveniently installed, the sealing effect of the reactor is enhanced, electrolyte leakage is avoided to cause corrosion to the equipment, and a process environment of electrolytic processing is simulated, so that the current efficiency test is realized quickly and with saved materials.

The application discloses a red clay modification treatment method for heavy metal pollution remediation, which comprises the following steps: dispersing natural red clay in deionized water, and obtaining a clay suspension after fully stirring the natural red clay and the deionized water; sequentially adding sodium citrate solution and sodium bicarbonate solution into the clay suspension, and adding sodium disulfite during water bath heating. The red clay modification treatment method for heavy metal pollution remediation removes free iron oxide, complex iron oxide and amorphous iron oxide and other colloidal oxides existing in the original red clay by a selective chemical dissolution method, eliminates the shielding effect of the colloidal oxides on the active sites of clay minerals in the red clay, and adds different proportions of aluminum oxide colloids in the red clay from which the colloidal oxides are removed, so that the active sites, the specific surface area and the cation exchange capacity of the clay minerals in the red clay are improved, thereby effectively improving the adsorptivity of the red clay, and the soil environment is not polluted.

The invention relates to the technical field of tunnel construction, in particular to a subsea tunnel active drainage and crystallization removal system and a construction method.The subsea tunnel active drainage and crystallization removal system comprises a plurality of axially-spliced pipe pieces, the pipe pieces comprise inverted arch pipe pieces, top sealing pipe pieces and side face pipe pieces, a plurality of wall rear water collection grooves are formed in the side face pipe pieces, and one-way water collection reinforcing meshes are arranged in the wall rear water collection grooves; a one-way water collecting reinforcing mesh is arranged on the side face pipe piece, a crystal removing device for removing sea salt crystals on the one-way water collecting reinforcing mesh is further arranged in the side face pipe piece, and the wall back water collecting groove communicates with a drainage device. An efficient drainage path is constructed by combining the pre-buried drainage channel and the wave-shaped drainage channel, so that the hydrostatic pressure of the back of the lining is effectively reduced, and the structural safety is improved; a crystal removing device combining mechanical scraping and chemical dissolving is adopted, and the industrial problem that sea salt crystals block an inlet of a drainage system is solved.

This invention belongs to the field of harmless treatment and resource utilization technology of chemical hazardous waste, and in particular, it is a treatment system for 2-mercaptobenzothiazole production waste. The system includes a vacuum drying unit, a crushing unit, and a material conveying unit, as well as a composite physical separation unit connected in series downstream of the crushing unit via the material conveying unit. The composite physical separation unit includes a wind-powered separation unit and an electrostatic separation unit connected in series. The crushing unit is used to crush the solid waste into uniform granular materials. Employing a "wind-powered + electrostatic" composite physical separation technology, the system first separates the heavy phase resin residue according to density, and then separates the sulfur and organic phases in the light phase according to dielectric properties, solving the problem of resin impurities encapsulating the effective components in traditional processes. Physical pre-separation replaces a large number of chemical dissolution and acid-base neutralization steps, effectively reducing the consumption of solvents and acid / base reagents, while also reducing energy consumption in subsequent purification stages.

The invention belongs to the technical field of nano material preparation, and particularly discloses a preparation method of uniform-size fibroin nano fibril, which comprises the following steps: cutting degummed silk into small sections of 5-15 mm; preparing a DMSO / water / strong base mixed solution; s2, soaking the cut silks in the step S1 in a DMSO / water / strong alkali mixed solution to obtain a solution system soaked with the silks; placing the solution system soaked with the silk in a sealed container, and performing heating treatment to obtain a solution system containing fibroin nano fibrils; and performing centrifugal treatment on the solution system containing the fibroin nano-fibrils, and taking supernate, thereby obtaining the fibroin nano-fibril suspension with uniform size. According to the invention, degummed silk is cut into small sections which are easy to dissolve in a special chemical solution, and microwave heating treatment is carried out during chemical dissolution, so that the fibroin nano-fibril suspension with the diameter of 60-80 nm can be rapidly obtained.

The application discloses a self-cleaning structure of a washing machine and a use method, relates to the technical field of washing machine cleaning, and comprises a washing machine outer drum, an inner drum and a rotating shaft. A plurality of through holes are arranged on the outer drum wall, and a fan-shaped nozzle type spray head is arranged outside each through hole. The jet flow of the spray head passes through the through hole and is directed to the interlayer between the inner drum and the outer drum, and the inner drum tripod dead angle is directionally sprayed. A cleaning agent box, a cleaning agent premixing box, a booster pump and an independent water delivery pipeline are arranged in the washing machine body. The water inlet is communicated with the premixing box, and the premixing box outlet is connected with each spray head through the booster pump. During use, the external water and the cleaning agent are mixed in the premixing box according to a proportion, and the mixture is sprayed into the interlayer by the spray head after being pressurized by the high-pressure pump, so that 360-degree cleaning is realized in cooperation with the self-rotation of the inner drum. The structure adopts a two-stage self-cleaning mode combining chemical dissolution and physical flushing, can effectively remove the residual washing powder and chemical deposits such as scale that are not melted on the tripod, and prevents the spray head from being blocked.

The utility model belongs to evaporimeter technical field, specifically speaking is a kind of evaporimeter convenient to descale, including cylinder body, descaling assembly includes ultrasonic transducer, the heating chamber, evaporator chamber, separation chamber inner wall is equipped with multiple ultrasonic transducers, the heating chamber side wall is equipped with air inlet pipe, the heating chamber inner wall is equipped with main pipe, the main pipe is equipped with multiple branch pipes, the evaporator chamber side wall is equipped with feed pipe, by adding the water of descaling agent to the inner wall of cylinder body, main pipe inner and outer wall, branch pipe inner and outer wall, silk screen demister are soaked, descaling agent carries out chemical dissolution, complexation, stripping, dispersion to the dirt adhered to it, destroys dirt structure, simultaneously, ultrasonic transducer generates high frequency ultrasonic wave and spreads in water, destroys scale layer structure, cooperates water and descaling agent, ultrasonic wave can accelerate chemical agent penetration scale layer, this structure avoids to disassemble evaporimeter inside, is beneficial to improve the convenience of descaling.

The invention relates to the technical field of oilfield chemistry, and discloses a multi-effect composite blocking remover for oil and water wells and a use process of the multi-effect composite blocking remover, and the blocking remover is compounded by taking a deep eutectic solvent base solution and a cationic gemini viscoelastic surfactant as core functional components. The deep eutectic solvent base solution can efficiently dissolve inorganic scale and organic composite scale; the cationic gemini viscoelastic surfactant can reverse rock wettability and endow the system with viscoelasticity. The using process comprises the following steps: injecting the preposed spacer fluid, then injecting the main body fluid of the blocking remover in a pulse mode, and finally injecting the displacing fluid. Periodic pressure fluctuation generated by pulse injection cooperates with viscoelasticity of fluid, liquid medicine can be forced to go deep into the hypotonic pore throat, and the suspension carrying capacity of the hypotonic pore throat to blocking particles is remarkably enhanced. According to the invention, through multiple synergy of chemical dissolution, physical regulation and control and process synergy, effective removal of complex blockage is realized, and the flowback performance is good.

The present application belongs to the technical field of flexible inflatable structure, and particularly relates to a forming method of a heterogeneous inflatable structure. The forming method is realized based on a foam core mold and includes seven steps of forming of the foam core mold, pasting of a bearing layer fabric, arrangement of variable-pitch spacer wires, coating of a functional layer, dissolving and draining of the core mold, edge sealing of the inflatable structure, and installation and sealing of accessories. The dissolving and draining of the core mold is realized by using a core mold dissolving device and a core mold dissolving method, which solves the demolding difficulty of the core mold of the heterogeneous inflatable structure caused by the self-strengthening effect of the functional layer after coating and the blockage of the closely arranged spacer wires by using a chemical dissolving method. The pasting process of the bearing layer fabric forms an air-tight layer between the bearing layer and the core mold by the method of forming a core mold adhesive layer by coating a thin glue layer, which forms a complement with the air-tight layer of the functional layer, so that the pressure bearing capacity of the formed heterogeneous inflatable structure is improved by more than 200% compared with that of the traditional forming process.

The invention disclosed a method for recycling rare earth elements from waste light-emitting electronic components by pyrolysis and alkaline melting-acid leaching. Based on the pyrolysis properties of the organic polymer, through catalytic pyrolysis of the organic polymer material in electronic components and convert the carbon in the residue into water gas, realize high-efficient dismantling of waste electronic component packaging materials. The traditional problems that the compositions of waste light-emitting electronic components are difficult to disassemble are solved, the generated pyrolysis gas and water gas can continuously supply energy for the pyrolysis system and recover the heat in the flue gas to save energy. Meanwhile, based on the chemical dissolution reaction mechanism of phosphors, the combination process of alkali melting, and acid leaching is used to efficiently recover rare earth elements from the waste light-emitting electronic components, and the step leaching of rare earth elements is realized. The rare earth oxalate can be recovered by precipitation, which greatly reduces the difficulty of late separation and purification.

The invention relates to a method for rapidly dissolving a high-temperature alloy, synchronously and efficiently separating hafnium and recovering nickel and cobalt by using an electrolytic method, in particular to a method for promoting electrochemical dissolution of the high-temperature alloy, and a method for recovering nickel and cobalt products and hafnium-containing enrichment by controlling an ion competitive reduction sequence according to reduction potential differences of different metals. The invention provides a method for rapidly dissolving high-temperature alloy waste to recover nickel and cobalt resources and synchronously and efficiently separating hafnium-containing enriched substances, and mainly aims at solving the problems that valuable metal resources are difficult to recover due to the fact that high-temperature alloy is difficult to dissolve in an acid solution, and the process for treating the high-temperature alloy waste is complex and causes secondary pollution to the environment. According to the method, a traditional long-process recovery method is broken through, a unique alkaline region of a cathode / solution interface in the acid solution is regulated and controlled by utilizing metal reduction potential difference, the nickel-cobalt product is generated, meanwhile, the hafnium-containing enrichment is recovered, and the process flow is shortened. The method comprises the following steps: 1, respectively taking a high-temperature alloy and a titanium sheet as an anode and a cathode of electrolysis equipment, adjusting the pH value of an electrolyte to a certain value, turning on a direct-current power supply, and regulating and controlling electrolysis parameters to carry out electrochemical dissolution; 2, performing solid-liquid separation on a product in the electrolytic bath, and filtering to obtain a hafnium-containing enriched product; 3, separating the cathode product from the cathode to obtain a nickel-cobalt product; and 4, washing the hafnium-containing enriched product and a cathode nickel-cobalt product.