16results about How to "Avoid corrosion risk" patented technology

The present application relates to the field of bridge maintenance, and discloses a landscape bridge steel structure pulse cleaning device, which comprises a supporting seat, a main flow pipe, a push flow assembly, a driving assembly, a reset assembly and a cleaning assembly. The supporting seat is fixedly connected with the main flow pipe, and the push flow assembly is slidably arranged in the main flow pipe. The driving assembly is arranged on the supporting seat and used for driving the push flow assembly to move to compress the reset assembly to accumulate potential energy. The reset assembly releases the potential energy to drive the push flow assembly to quickly reset, extrude the liquid in the main flow pipe to generate a pulse water flow. The cleaning assembly is arranged at both ends of the main flow pipe and used for switching the fluid discharge path and opening the cleaning port. The present application uses pulse jet to improve the stripping efficiency of rust on the surface of the steel structure. The internal pipeline is self-cleaned through the cleaning assembly, so that the mixed corrosion of the chemicals is avoided. The negative pressure generated by the push flow assembly can suck and recycle the accumulated water in the gap, prevent secondary rust, and solve the problem that the secondary rust is caused by the residual accumulated water after the cleaning of the complex steel structure surface.

The application discloses a pretreatment method of gas field water, which comprises the following steps: gas stripping of the gas field water to obtain gas phase and liquid phase, wherein the volume ratio of the gas field water to the stripping gas is 1:8-20; returning the gas phase to the previous step after dry desulfurization; adding the liquid phase into a dissolved air water floatation after oxidative desulfurization and oil-water separation by biomass modified cotton sponge; performing oxidation treatment on the water phase after oil-water separation, then performing sedimentation treatment, and performing filtration treatment on the water phase after solid-liquid separation; removing sulfur and reducing COD by gas stripping and oxidation; treating the hydrogen sulfide gas generated by the gas stripping by dry desulfurization; recycling the desulfurized gas; removing suspended solids, high-valence metal ions with valence of two or more, colloids, organic matters, bacteria and microorganisms by a ceramic ultrafiltration membrane filter and a ceramic nanofiltration membrane filter.

This invention relates to the field of pipeline corrosion prevention technology, specifically a method for obtaining the drying time of the water film on the inner wall of a pipeline during a CO2 gas-water alternating process. The method involves obtaining the saturated water content of a single-stage plug and the water content of the water film on the inner wall of the pipeline, assuming the CO2 flow state within the pipeline is supercritical and highly turbulent. Then, it determines the effective number of drying plugs required to completely dry the water film on the inner wall. Based on the effective number of drying plugs and the single-stage plug passage time, the drying time of the water film on the inner wall is obtained. This invention, by accurately calculating the drying time of the water film on the inner wall of the pipeline, can optimize the set duration of the CO2 gas-water alternating injection, avoiding cost waste or corrosion risks caused by over-injection or under-injection. It achieves efficient corrosion prevention of pipelines with CO2 gas-water alternating injection at low cost. Simultaneously, it can output multi-dimensional data such as drying time, CO2 consumption, and the distribution of parameters along the pipeline, providing a scientific basis for pipeline corrosion risk assessment and drying process optimization.

This invention discloses a sterilizer, relating to the field of environmental treatment, comprising a main fan, a return air duct, a first outlet air duct, a vaporization chamber, and a second outlet air duct. The air inlet of the main fan is connected to the end opening of the return air duct, and the air outlet of the main fan is connected to the beginning opening of the first outlet air duct. The end opening of the first outlet air duct is connected to the air inlet of the vaporization chamber, and the air outlet of the vaporization chamber is connected to the beginning opening of the second outlet air duct. The vaporization chamber is equipped with a dual-fluid atomizing nozzle and a heater, and also includes a disinfectant storage tank, a metering pump, and an air pump. The inlet of the metering pump is connected to the disinfectant storage tank, the outlet of the metering pump is connected to the supply port of the dual-fluid atomizing nozzle, and the air outlet of the air pump is connected to the supply port of the dual-fluid atomizing nozzle. It achieves sterilization of the entire internal cavity without blind spots or dead angles, achieving a kill rate of up to 99.9999% for target microorganisms. It has a compact structure and strong versatility, and can be used for sterilization of closed equipment as well as room sterilization, meeting the relevant requirements of biosafety laboratories.

The application belongs to the technical field of lead frame preparation, and provides a preparation process of a multilayer composite structure low-radian lead frame; firstly, a macromolecular boundary lubricant containing a phosphorus-nitrogen heterocyclic structure and a sulfurized long-chain fatty acid ester extreme pressure agent are respectively prepared through multiple chemical reactions, the two functional additives are compounded with poly-alpha-olefin base oil to form a synergistic lubricant; the lubricant is uniformly coated on the surface of a multilayer composite metal strip before stamping and forming, and the core stamping step includes: high-speed precision blanking, low-radian bending forming and flattening of the strip after pre-operation; through the synergistic effect of the two additives, boundary lubrication protection of the workpiece and extreme pressure wear resistance of the mold are realized, and the surface quality and forming precision of the lead frame are improved.

The invention relates to the field of recycling of positive electrode materials of waste lithium ion batteries, in particular to a method for removing aluminum from lithium extraction residues through cooperation of inorganic acid and alkali. The method comprises the following steps: 1) roasting the lithium iron phosphate lithium extraction residues to obtain iron phosphorus residues; 2) mixing the iron-phosphorus slag with an alkaline solution and reacting to obtain an alkaline leaching solution and alkaline leaching slag; (3) adjusting the pH value of the alkaline leaching solution and removing aluminum to obtain aluminum-removed liquid 1; 4) mixing the alkaline leaching residues with inorganic acid and reacting to obtain an acid leaching solution; 5) mixing the pickle liquor with an aluminum removal agent and reacting to obtain aluminum removal liquid 2; and 6) mixing the aluminum-removed liquid 1 with the aluminum-removed liquid 2 to obtain a purified iron-phosphorus liquid. The lithium extraction residue inorganic acid-alkali synergistic aluminum removal process provided by the invention realizes deep removal of aluminum impurities, has high iron and phosphorus recovery rates, does not introduce fluorine elements in the whole process flow, and provides a high-quality raw material for regeneration of battery-grade iron phosphate.

The invention provides a universal surfactant and a preparation method thereof.The preparation method of the universal surfactant comprises the following steps that S1, a titanate cross-linking agent and a silane coupling agent are mixed and stirred, and a first mixture is obtained; s2, adding a hydrocarbon solvent into the first mixture, and stirring to obtain a turbid second mixture; s3, adding an alcohol solvent into the second mixture, and stirring to obtain a clarified third mixture; and S4, adding a catalyst into the third mixture, and stirring to obtain the universal surfactant. The universal surfactant is non-corrosive, has wide applicability to various base materials and adhesives, can effectively improve the bonding performance of low-surface-energy base materials, and integrates the polyurethane adhesive and the silica gel, and the preparation method is simple, stable and controllable, clear in process index and convenient for industrial large-scale production and popularization.

The invention relates to the technical field of ship engineering, and discloses an instrument protection device for a grating plate, which comprises a protection cover, the protection cover can cover an instrument, and the protection cover comprises an observation plate with an observation port; the at least two elastic supporting legs extend towards the lower part of the observation plate, and a bending transition part is arranged between the two elastic supporting legs; and the clamping parts are arranged at the lower ends of the elastic supporting legs. The elastic supporting feet elastically deform inwards when being extruded by opposite external force, so that the clamping parts get close to each other and are inserted between the grating strips of the grating plate. And after the external force is removed, the elastic supporting legs rebound by virtue of the elastic potential energy of the bending transition parts, and the clamping parts are driven to abut against the outer side and are clamped on the grille bars. According to the instrument protection device for the grating plate, through the mechanical logic of elastic deformation and resilience of the elastic supporting feet, the clamping parts are driven to abut against and be clamped with the grating strips, so that the non-destructive rapid disassembly and assembly effect is achieved, and the installation stability of the instrument protection device can be maintained in the marine environment.

The present application relates to the technical field of industrial water treatment and intelligent control, in particular to a metallurgical wastewater advanced treatment system, comprising a multi-source sensing module, which obtains real-time water quality and hydraulic parameters through a sensor array, and calculates heat load prediction data in combination with production plans; a digital twin engine module, which inputs data into a water quality-thermal energy coupling model, simulates the evolution of the physicochemical properties of water flow, and generates a full-network scaling risk thermodynamic map; an adaptive control module, which analyzes electromagnetic wave modulation instructions based on the thermodynamic map, and generates cascade waterway scheduling instructions; and a field execution module, which dynamically adjusts electronic scale-inhibiting equipment parameters in response to the instructions, and controls valves to reconstruct water supply paths; the present application realizes dynamic matching of water quality and thermal energy through digital twin technology, converts passive chemical cleaning into active scale inhibition by physical fields, and effectively reduces the dependence on chemical reagents.

The present application relates to the field of environmental monitoring and chemical analysis technology, and discloses a kind of determination method of ammonia nitrogen in tail liquid of comprehensive utilization of platinum-containing waste catalyst, comprising the following steps: S1, sample dilution: accurately pipetting 1.00mL to-be-measured tail liquid, placing in 100mL volumetric flask, with ammonia-free pure water constant volume to the scale and fully mixed, to obtain A solution, to achieve 100 times controllable dilution.The present application effectively solves the core technical problems such as high acid inhibition of color development, aluminum ion precipitation embedding ammonia nitrogen, liquid alkali dilution, and exogenous nitrogen pollution through targeted pretreatment process and determination integration technology, fills the blank of special ammonia nitrogen determination method for such complex matrix samples, and meets the needs of laboratory routine monitoring and industrial application.

This utility model discloses a water purification tank control device based on edge intelligent regulation, relating to the field of water purification equipment technology. It includes a water purification tank body, with a control mechanism on one side of the tank body. The control mechanism includes a mounting plate, a fixed pipe fixedly connected to one side of the mounting plate, and the fixed pipe connected to the water purification tank body. A flow meter is installed on the top of the fixed pipe, and an inlet pipe is fixedly connected to one side of the top of the fixed pipe. A filter element is installed on the inner wall of one end of the inlet pipe, and a sealing block is fixedly connected to the inner wall of the fixed pipe. Through the design of the control mechanism and the heat dissipation mechanism, wastewater passes through the inlet pipe and the filter element while the flow meter monitors the water flow rate in the fixed pipe. When adjustment is needed, a servo motor drives a second gear to rotate, which in turn drives a first gear to rotate, causing a screw to move the fixed block along a fixed rod, moving an adjustment rod away from the sealing block and adjusting the flow rate.

The utility model discloses a composite shock absorption sound insulation board structure of ship relates to sound insulation board technical field. The utility model discloses a glass fiber reinforced polymer backboard is provided with foamed aluminum board in the top, and the top of foamed aluminum board is provided with the metal panel, the top of glass fiber reinforced polymer backboard is provided with the dismounting mechanism, and the dismounting mechanism includes the first threaded hole of being set up in the top of foamed aluminum board, and the second threaded hole of being set up in the top of metal panel. The utility model discloses a dismounting mechanism and threaded hole cooperation are set up, realized the quick dismounting and replacement of metal panel, avoided the corrosion risk of integral type board material, significantly improved maintenance efficiency and reduced the replacement cost, through positioning mechanism and the card slot structure, realized the accurate alignment and installation between multiple sound insulation boards, reduced the dependence on manual auxiliary positioning, improved installation accuracy and construction efficiency.

The invention relates to the technical field of precious metal recovery and catalytic material regeneration, and discloses a precious metal leaching agent for waste catalyst recovery and application of the precious metal leaching agent. The precious metal leaching agent comprises organic acid and organic nitrile. After the waste catalyst is roasted, hydrothermal leaching is conducted in the precious metal leaching agent, solid-liquid separation is conducted, the obtained filtrate is used for enriching precious metal, and meanwhile a waste catalyst carrier is obtained. According to the method, an organic acid and organic nitrile synergistically driven precious metal dissolution mode is constructed, the corrosion risk of a traditional strong oxidation leaching system to the carrier is overcome, unification of efficient recovery of precious metal and reutilization of the carrier is achieved, and the method has good industrial application prospects.

The invention discloses a preparation method of a cold spraying gradient porous micro-channel liquid cooling plate, and relates to the technical field of thermal management devices. The invention can provide a low-cost and high-efficiency liquid cooling plate preparation technology which is adaptive to an aluminum alloy micro-channel, has no impurity residue and can accurately regulate and control a porous structure. The method comprises the steps that after the surface of a cold plate aluminum alloy matrix is pretreated, a target surface is obtained, and the pretreatment process sequentially comprises alkali washing treatment, acid pickling treatment and activating treatment; a cold spraying technology is adopted, metal powder of various particle size grades is sprayed to the target surface, so that side walls of various porous structures are formed on the target surface, runners are formed between the side walls, the hole diameter of the metal powder closer to the side wall of a heat source is smaller, and the porosity is larger; and connecting the cover body with the target surface and the upper part of each side wall in a sealing manner to form a closed flow channel, thereby obtaining the target liquid cooling plate.

The utility model discloses a tank car cleaning steam recovery system relates to the field of energy saving and environmental protection. The utility model provides a steam - hot water cascade recovery system for the background problem of steam direct discharge, hot water high temperature blowdown leading to energy waste and workshop humid heat noise big when food grade tank car such as maltose is cleaned, and the scheme adopts the steam of tank car top pressure relief and enters the plate type condenser through the steam guide pipe, and the remaining steam condenses about 120 DEG C condensed water in heat exchange and gives off heat to heat process water, and the condensed water is sent into the recovery water tank through the steam-water separator and centrifugal pump and is used for the boiler makeup water again, and the process water after heating is stored in process water tank and hot process water tank in proper order, and is delivered to the workshop hot water tank circulating flushing through the hot water pump, and the washing waste water is discharged after reaching the standard through the blowdown pipe heat exchange cooling again. The structure is closed loop circulation that is constituted by the module of steam and hot water import, tank car, pressure relief export, condenser, steam-water separator, condensed water pump, three stage water tank and two stage water pump etc. through the flange pipeline and the heat preservation pipeline series connection.

This utility model relates to a device for desulfurization, dechlorination, and hardening of high-salinity wastewater using calcium carbide slag, belonging to the field of industrial wastewater treatment technology. The method includes steps such as heavy metal removal, magnesium ion removal, two-stage desulfurization and dechlorination, and calcium ion removal, sequentially achieving the removal of heavy metals and magnesium ions from the wastewater. 2+ SO4 2‑ Cl ‑ and Ca 2+ The system achieves efficient removal of calcium carbide slag, and the resulting precipitate is partially recycled for desulfurization after solid-liquid separation. The device includes a neutralization tank, a magnesium precipitation tank, a first reaction tank, a second reaction tank, a calcium precipitation tank, a desulfurization tower, a blower, and multi-stage solid-liquid separation units. It features a compact structure and clear division of labor. This invention fully utilizes calcium carbide slag solid waste resources, achieving high treatment efficiency, low operating costs, and resource-based utilization of byproducts. It possesses good engineering adaptability and economic and environmental benefits.