261 results about "Acid corrosion" patented technology

The present invention relates to the field of metal corrosion and protection, and specifically to a preparation method and application of a modified chitosan Schiff base corrosion inhibitor. The preparation method comprises six steps: (1) preparing a gel-like chitosan dispersion; (2) preparing an ethanol solution of 2,6-dimethyl-5-heptenal; (3) adding the gel-like chitosan dispersion; (4) adding the ethanol solution of 2,6-dimethyl-5-heptenal and conducting a Schiff base reaction; (5) rotary evaporation and dehydration of the reaction product; and (6) washing, filtering, and drying. The present invention utilizes 2,6-dimethyl-5-heptenal, a common food additive, as a modifier to condense with natural polymer chitosan to prepare an acid corrosion-resistant corrosion inhibitor, with a simple process and low production cost. The invention is applied to N80 steel sheets in a hydrochloric acid medium for corrosion protection, uses a low concentration, and effectively improves the corrosion inhibition rate of the corrosion inhibitor on metals. The invention is a green, environmentally friendly, economical, and efficient corrosion inhibitor with good promotion prospects.

The invention relates to the technical field of refractory materials, and discloses a rotary kiln lining refractory material and a preparation method thereof, the raw materials comprise mullite, boron carbide, calcium hexaluminate, silicon carbide, silica powder, alpha-alumina micro powder, coating powder, modified refractory fiber, and a binder. The mullite and the boron carbide are selected as base materials and have excellent acid corrosion resistance, the titanium dioxide and the aluminum oxide are used for treating the refractory fibers, so that a compact enrichment layer is formed, low-temperature sintering is promoted by adding the yttrium oxide, the titanium dioxide is introduced into the refractory fibers, and the corrosion resistance of the refractory fibers is improved. And micropores in the fiber surface can be blocked, so that the porosity of the refractory material is reduced, and the diffusion path of acid steam is prolonged. The refractory material provided by the invention has excellent high-temperature stability and corrosion resistance.

The invention discloses a halogen-free low-volatility anti-icing photo-thermal super-hydrophobic coating for the surface of a wind power blade and a preparation method thereof. The coating is prepared by compounding functionalized modified multi-walled carbon nanotubes, functionalized modified nano titanium nitride, polydimethylsiloxane / nano silicon dioxide modified epoxy resin and a curing agent. Wherein the multi-walled carbon nanotubes are subjected to amidation and dual functionalization of lauric acid and 3-aminopropyl triethoxy silane; the surface of the nano titanium nitride is uniformly modified through bionic polydopamine coating; hydroxyl-terminated polydimethylsiloxane and nano SiO are doped into an epoxy resin base material, so that the system is endowed with low surface energy and high weather-resistant binding force. After curing and film forming at room temperature for 24 hours or at 80 DEG C for 2 hours, the water contact angle is greater than or equal to 155 DEG C, the ice adhesion strength is less than or equal to 10 kPa, the photo-thermal temperature is greater than or equal to 40 DEG C, and the performance is not attenuated after 50 times of heating and cooling tests; and after 150-hour damp heat, 500-hour ultraviolet radiation, acid corrosion and abrasive paper friction, the coating does not blister or fall off. The coating disclosed by the invention is green and environment-friendly, low in curing energy consumption, high in photo-thermal temperature rise and strong in super-hydrophobic durability, and can be used for remarkably improving the long-term anti-icing capability of wind power blades in cold and high-humidity regions.

The utility model discloses a catalytic hydrogenation reactor for treating a biomass raw material with a high acid value and a high iodine value, and belongs to the technical field of oil product hydrogenation. The catalytic hydrogenation reactor comprises a reactor pressure-bearing container, an inner cylinder, an ash discharge port, a feeding assembly, a reaction assembly and a discharging assembly, the inner cylinder is arranged in the reactor pressure-bearing container, the feeding assembly and the reaction assembly are arranged in the inner cylinder, the reaction assembly comprises a ceramic tube bundle internal part, the discharging assembly is arranged above the inner cylinder, and the discharging assembly is arranged above the inner cylinder. The ash discharge port is formed in the center of the bottom of the reactor pressure-bearing container. By arranging the ceramic tube bundle internal part in the catalytic hydrogenation reactor, on one hand, the ceramic tube bundle internal part serves as a reaction assembly and has certain acid corrosion resistance, and on the other hand, the ceramic tube bundle internal part serves as a solid catalyst carrier, selective hydrogenation of high-acid-value and high-iodine-value biomass raw materials is achieved, the iodine value is effectively reduced, and coking of the high-iodine-value biomass raw materials in the reaction process is avoided; in addition, the acid value is maintained as far as possible while the iodine value is reduced, and the solid catalyst and the catalytic hydrogenation reactor are not corroded, so that the stability of the solid catalyst and the yield of the product are improved.

The invention discloses a cable resistant to high temperature and acid corrosion, and the cable comprises a conductor layer which is formed by concentrically twisting a plurality of nickel-coated copper wires; the inner insulating layer coats the conductor layer and is used for improving the thermal conductivity of the cable; the outer insulating layer is sleeved on the inner insulating layer; the anti-bending buffer layer is coated outside the outer insulating layer; the electromagnetic shielding layer wraps the anti-bending buffer layer and is used for forming a shielding layer; the electromagnetic shielding layer is coated with the anti-corrosion functional layer, the anti-corrosion functional layer is a fluororubber belt, and benzotriazole corrosion inhibition microcapsules are embedded in a rubber layer of the fluororubber belt; and the mechanical strengthening layer is arranged outside the anti-corrosion functional layer in a sleeving manner. According to the invention, the conductor layer adopts the nickel-coated copper wire to improve the high-temperature-resistant conductivity, the corrosion inhibition microcapsules are embedded in the corrosion-resistant functional layer to realize long-acting corrosion resistance, the electromagnetic shielding layer is combined with graphene and the tinned copper strip to enhance the broadband shielding effectiveness, and the cable has long-acting corrosion resistance, mechanical property stability in a high-temperature environment and broadband electromagnetic shielding effectiveness.

The invention discloses a preparation process of carboxylated shell-based activated carbon for organic matter adsorption, and particularly relates to the technical field of adsorption materials, and the preparation process comprises the following steps: mixing coconut shell powder and walnut shell powder, crushing, and loading potassium hydroxide in stages in a gradient manner; carrying out two-stage microwave activation in an inert atmosphere, namely low-temperature pre-activation in the first stage and high-temperature activation in the second stage, and introducing carbon dioxide; the activated product, phosphoric acid, a laccase-peroxidase complex enzyme preparation and a buffer solution are subjected to ultrasonic synergistic modification, and then a weak acid reaction is maintained through dynamic pH regulation and control; and finally, performing graded washing and gradient drying to obtain a finished product. According to the method, high-density carboxyl grafting and graded pore construction are synchronously realized under mild conditions through a synergistic effect of directional catalysis of biological enzyme and dynamic regulation of microwave, so that the problems of structural damage caused by strong acid corrosion, pore imbalance caused by fixed parameters and stability reduction caused by insufficient post-treatment in a traditional process are solved; the adsorption performance and the regeneration cycle performance of the material are also obviously improved.

The specific embodiment of the invention provides an anti-rust coating and a coating, the anti-rust coating comprises a water-based rust conversion agent and a water-based epoxy coating, the water-based rust conversion agent comprises a water-based acrylic emulsion and ammonium polyacrylate salt, the pH value of the water-based rust conversion agent is 6-8, Fe < 3 + > is converted into a stable complex in situ through a carboxyl chelation reaction, and the stable complex is added into the water-based epoxy coating. The water-based rust conversion agent and the epoxy coating have the advantages that the water-based rust conversion agent is added into the water-based epoxy coating, the continuous acid etching risk of a matrix is avoided, the water-based epoxy coating comprises polydopamine grafted and coated silicon dioxide, micropores can be reduced by the coating, permeation of water, oxygen and chloride ions can be inhibited, hydrolytic stripping and secondary corrosion can be prevented, and the water-based rust conversion agent and the epoxy coating have good compatibility; the formed coating is excellent in interlayer adhesive force and compact and firm in film layer, and the long-acting protection requirement in a severe corrosion environment can be met when the anti-rust coating is used for coating corrosion prevention of a steel member.

The invention provides a preparation method of a back contact heterojunction solar cell. The method comprises the following steps of: after polishing and cleaning two surfaces of a silicon wafer, sequentially depositing a passivation layer i, a doping layer n, a silicon nitride isolation layer and a sacrificial layer on the back surface; the sacrificial layer pattern is etched through picosecond laser, and the doping layer n layer is exposed through HF acid corrosion; synchronously etching a passivation layer i and a doping layer n in a back opening region by adopting alkali liquor, and performing front texturing; a passivation layer i and a doping layer p are secondarily deposited on the back surface, a doping layer n is secondarily exposed through HF acid after a P region pattern is etched through laser, a passivation layer i and an anti-reflection layer are deposited on the front surface, a TCO transparent conductive layer is deposited on the back surface, a P / N region electrode is subjected to silk-screen printing and light injection curing, and finally a P / N region is isolated through laser. According to the method, the rear texturing process is combined with the laser and wet etching, so that the front film layer is prevented from being corroded by the wet method, the process is simplified, the cost is reduced, and high-efficiency and low-damage industrial mass production is realized.

The invention provides an anti-PID multi-layer composite photovoltaic packaging adhesive film and a preparation method and application thereof.The adhesive film comprises a first EVA adhesive film layer, a second EVA adhesive film layer and a third EVA adhesive film layer which are sequentially stacked, the first EVA adhesive film layer comprises an acid absorbent, the second EVA adhesive film layer comprises an ion trapping agent, and the third EVA adhesive film layer comprises a second EVA adhesive film layer and a third EVA adhesive film layer which are sequentially stacked. And the third EVA adhesive film layer comprises an ion trapping agent and an acid absorbent. The acid absorbent is added into the first layer of the anti-PID multilayer composite photovoltaic packaging adhesive film to absorb acetic acid generated by EVA hydrolysis, so that the reaction between the acetic acid and sodium salt on the surface of glass is effectively reduced; an ion trapping agent is added into the second layer to effectively block sodium ion migration, and a dual initiation system improves the crosslinking degree to further block ion migration; an ion trapping agent is added into the third layer to further absorb free ions, and an acid absorbent prevents acid corrosion to the battery piece and the lead; the multi-layer structure synergistically realizes high-efficiency PID resistance.

The invention provides a preparation method of triphenylchloromethane, and belongs to the technical field of medical intermediates. The preparation method comprises the following steps: preparing a suspension from pure benzene, a composite catalyst and an adsorbent, dropwise adding carbon tetrachloride to obtain a reaction solution, heating the reaction solution to 60-80 DEG C, treating with 808nm laser while stirring, and performing post-treatment to obtain the triphenylchloromethane. The composite catalyst catalyzes pure benzene and carbon tetrachloride to react to generate triphenylchloromethane, hydrogen chloride is released, the adsorbent can adsorb hydrogen chloride in situ, and acid corrosion and catalyst poisoning can be prevented while forward proceeding of the reaction is maintained; the composite catalyst and the adsorbent are used for realizing catalysis-adsorption synergistic promotion of forward proceeding of the reaction, so that the dosage of the catalyst is reduced, the reaction time is shortened, the output of wastewater is reduced, and the reaction yield and the purity of triphenylchloromethane are improved.

Methods for treating a subterranean formation with a treatment fluid comprise introducing the treatment fluid into a wellbore extending into a subterranean formation, measuring a surface treating pressure, changing a concentration of the friction reducer to have at least two surface treating pressure measurements within a surface treating pressure range, establishing a relationship between the surface treating pressure measurements and the concentrations of the friction reducer, evaluating a friction reducer efficiency, and selecting the friction reducer with the best efficiency for a next stage of a multistage fracturing job. The treatment fluid includes water, an acid, a corrosion inhibitor, and a friction reducer.

The invention provides an acid-corrosion-resistant low-carbon seamless steel pipe thickness measuring device, and particularly relates to the technical field of steel pipe thickness metering, the acid-corrosion-resistant low-carbon seamless steel pipe thickness measuring device comprises a middle-position laser head and at least one side-position laser head, the middle-position laser head and the side-position laser head are used for detecting the wall thickness of a plurality of to-be-measured pipes arranged in groups, and a motion platform is arranged outside a laser thickness measuring assembly; according to the thickness measuring device for the acid-corrosion-resistant low-carbon seamless steel pipe, the laser thickness measuring assembly is driven by the motion platform to move in the arrangement direction, the axial direction and the vertical direction of the steel pipe; the problems that in the prior art, a feeding separation mechanism needs to be additionally arranged, and feeding time is long and equipment cost is high due to the fact that steel pipes are conveyed one by one are solved, it is achieved that the bundled steel pipes can be detected in place, additional operation such as separation and single feeding of the steel pipes is not needed, feeding time and equipment input cost are greatly reduced, and the production efficiency is improved. And meanwhile, stable basic positioning support is provided for batch detection, and the detection flexibility and adaptability are improved.

The application relates to the technical field of sodium ion batteries, and particularly discloses a negative electrode sheet based on an anodic aluminum foil and a preparation method thereof, which comprises: a honeycomb-shaped porous current collector including a pure aluminum foil layer and a nano-porous aluminum oxide layer, wherein the nano-porous aluminum oxide layer is obtained by sequentially performing anodic oxidation and acid corrosion on the aluminum foil current collector; a first coating layer, which is a high-specific-energy phosphorus-doped material and is embedded in the porous structure of the nano-porous aluminum oxide layer; and a second coating layer, which is made of hard carbon material and is coated on the first coating layer. In the application, the aluminum foil is treated by anodic oxidation to obtain a honeycomb-shaped nano-porous aluminum oxide layer, and then the thickness and pore size of the oxide layer are regulated by acid corrosion treatment, so that the surface roughness of the aluminum foil is improved, the adhesion between the electrode sheet and the current collector is improved, and the volume expansion of the phosphorus-based material is inhibited through the embedding design of the first coating layer, thereby improving the cycle stability and safety of the battery.

The invention provides a universal method for improving activity and stability of a NiFe-based catalyst and application of the universal method, and relates to the technical field of clean energy and new materials.The method comprises the steps that 1, NiFe-based catalyst dispersion liquid with a certain concentration is prepared to serve as a solution A; preparing an organic phosphonic acid corrosion inhibitor diluted solution with a certain concentration as a solution B; and step 2, uniformly mixing the solution A and the solution B, adding a certain amount of a binder, and carrying out high-speed shearing and / or high-pressure homogeneous dispersion to obtain the uniform and stable final slurry. The organic phosphonic acid corrosion inhibitor is used for modifying the NiFe-based catalyst, so that a strong and effective chelation protection layer is formed on the surface of the NiFe-based catalyst, the catalytic activity and stability of the NiFe-based catalyst are improved conveniently, the method is simple and convenient in process and compatible with an existing electrode manufacturing process, the high oxygen evolution activity of the catalyst can be maintained, and meanwhile the catalytic activity and stability of the NiFe-based catalyst are improved. And the long-term running durability of the device is greatly improved, and the device is suitable for a high-performance and long-service-life AEM water electrolysis hydrogen production system and an OER test.

This invention relates to the field of coating technology, specifically to a protective coating for stone surfaces with good waterproof performance and its preparation method, comprising the following steps: S1. Treating microcrystalline cellulose to obtain product 1 for later use; S2. Reacting product 1 from step S1 with titanium tetrachloride to obtain nano-titanium dioxide for later use; S3. Mixing the nano-titanium dioxide from step S2 with sodium oleate and adjusting the pH to 6.5-7.5 to obtain product 2 for later use; S4. Performing surface synergistic hydrophobic modification treatment on product 2 to obtain functional filler. This invention discloses a protective coating for stone surfaces with good waterproof performance, using fluorinated acrylic resin as the base resin, incorporating functional filler, and combining it with a curing agent, mixed solvent, defoamer, and leveling agent. Through the synergistic effect between the components, this protective coating for stone surfaces possesses good waterproof performance as well as good resistance to ultraviolet aging and acid corrosion.

The invention discloses an anti-corrosion composite coating for an ammonia gas engine, relates to an anti-corrosion technology for an ammonia gas fusion engine, and solves the technical problem that the reliability, durability and commercialization process of an ammonia fuel engine are restricted by the existing engine material system and protection technology. The composite coating comprises a base material arranged on the surface of the ammonia gas engine component; the base material layer is adjacent to the base material layer, is arranged on the surface of the base material and is used for resisting ammonia-alkali corrosion; the middle transition layer is arranged on the surface of the adjacent base material layer and is used for component gradient transition and stress relief; and the outermost surface layer is arranged on the surface of the middle transition layer and is used for resisting acid corrosion and pitting corrosion. The invention further discloses an intelligent corrosion prevention system and method for the ammonia gas engine. The invention solves the problem of limited protection performance of the traditional single coating.

The utility model discloses etching equipment. The etching equipment comprises a vacuum infiltration device which comprises an infiltration tank and a vacuum mechanism, wherein the vacuum mechanism is connected with the infiltration tank and is used for vacuumizing the infiltration tank; in the alkali corrosion device, a first temperature control assembly is used for controlling alkali liquor in an alkali liquor tank to be at a preset first temperature value, and a first bubbling assembly is used for generating bubbles in the alkali liquor; and / or the acid corrosion device comprises an acid liquor tank, a second temperature control assembly and a second bubbling assembly, the second temperature control assembly is used for controlling the temperature value of the acid liquor in the acid liquor tank not to exceed a preset second temperature value, and the second bubbling assembly is used for generating bubbles in the acid liquor; and the carrying device is used for carrying the materials treated by the vacuum infiltration device to at least one of the alkali corrosion device and the acid corrosion device. Through the mode, the etching equipment provided by the utility model can customize the optimal wet etching process adaptive to the glass substrate based on requirements, and can greatly improve the pore-forming efficiency of the glass substrate.

The present application relates to the technical field of splicing film, and particularly discloses a multi-color splicing film, which comprises a polyurethane outer film layer and a modified base film layer, wherein the modified base film layer is impregnated with a modified coordination compound liquid and then formed into the multi-color splicing film through a double-layer co-extrusion casting machine. The multi-color splicing film is improved in raw materials and process through the modified base film layer, and then impregnated with the modified coordination compound liquid. Finally, the multi-color splicing film is formed through the double-layer co-extrusion casting machine. The product has excellent elongation at break, excellent heat resistance, and excellent acid corrosion resistance.

The invention provides a display mother board, display panels and a display device.The display mother board comprises a plurality of display panels, each display panel comprises a substrate, a driving circuit layer, a light-emitting device layer and a packaging layer which are arranged in a stacked mode, a blocking structure is arranged on the side, close to the packaging layer, of each substrate, and the blocking structures are arranged around the display panels; the substrate comprises an etching area used for selective laser etching, and the etching area is located on the outer side of the display panel; an etching shielding layer is arranged on the side, close to the packaging layer, of the substrate, located on the periphery of the display panel and covers the etching area and the corresponding blocking structure. The display mother board, the display panel and the display device are simple in structure and convenient to manufacture, the problem of acid leakage corrosion can be effectively solved, and the product effect is ensured.

The present invention provides a curing agent, a two-component paint and coating and their application, belonging to the technical field of heavy-duty anti-corrosion coatings. The curing agent provided by the present invention is prepared from the following raw materials in parts by mass: 60 to 85 parts of a phenolic amine curing agent, 5 to 20 parts of diethylenetriamine and 5 to 20 parts of a hydroxymethyl urea compound. The present invention introduces a hydroxymethyl urea compound into the curing agent. The carbonyl group of the hydroxymethyl urea compound has a strong electron-withdrawing effect, resulting in the adjacent secondary amine group hardly participating in the epoxy curing reaction at room temperature. When hydrogen ions in the immersion environment penetrate into the interior of the coating, the hydrogen on the secondary amine group of the introduced hydroxymethyl urea compound will undergo a dehydration self-polymerization reaction with the hydroxymethyl group of the hydroxymethyl urea compound to form a macromolecular product, which effectively prevents the corrosion of hydrogen ions and fills the internal gaps of the coating to prevent further corrosion of the coating by water, hydrogen ions and salts, thereby achieving the purpose of acid corrosion resistance.

The application provides a proton exchange membrane fuel cell catalyst and a preparation method thereof. The application is characterized in that a F-treated Pt x Co y nanoparticle is uniformly loaded on the surface of a F-treated carbon carrier, and the atoms on the surface of the catalyst are rearranged through heat treatment, so that a proton exchange membrane fuel cell catalyst with a surface rich in Pt is obtained. The catalyst has good dispersity, obvious Pt and Co enrichment characteristics, the surface enrichment of Pt is beneficial to improving the utilization rate of Pt atoms, thereby improving the mass specific activity of the noble metal of the catalyst, the surface enrichment of Co is beneficial to surface modification and improving the electrochemical stability of the nanoparticle, the addition of F significantly improves the dependence of the proton exchange membrane on water, and the catalyst and the carrier have strong hydrophobicity, which can effectively reduce the corrosion of water and acid on the catalyst, has strong acid corrosion resistance, good catalytic activity, good cycle performance and long service life.

The application discloses a kind of corrosion and scale inhibitor sulfur removal agent and preparation method thereof, belong to sulfur removal agent technical field, by weight parts including following components: hydroxyl alkyl amine modified triazine compound 30~60 parts, polyaspartic acid scale inhibitor 10~25 parts, sodium gluconate 5~15 parts, ethylenediamine tetramethylene phosphonic acid sodium 3~10 parts, organic phosphonic acid corrosion inhibitor 2~8 parts and water 20~40 parts;The hydroxyl alkyl amine modified triazine compound is prepared by triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine under 50~80 ℃ for 2~4 hours, wherein the molar ratio of triazine sulfur removal agent and hydroxyl alkyl amine is 1:0.3~0.8.The application is prepared by using hydroxyl alkyl amine modified triazine compound as core sulfur removal component, triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine are reacted under specific temperature and time, which greatly improves the capture activity and reaction rate of hydrogen sulfide, and improves water solubility and dispersibility, realizes efficient sulfur removal.

The application provides a multi-core optical fiber coupling connection method, taking a multi-core optical fiber, using an HF acid corrosion solution to gradually corrode each multi-core optical fiber core from the end face of the multi-core optical fiber to form a plurality of multi-core optical fiber core corrosion holes; taking a single-mode optical fiber, using the HF acid corrosion solution to corrode the cladding of the single-mode optical fiber from the outside to the inside to the outer wall of the single-mode optical fiber core to form a plurality of single-mode optical fiber bare cores; inserting each single-mode optical fiber bare core into each multi-core optical fiber core corrosion hole, and making the end face of the single-mode optical fiber bare core abut against the end face of the multi-core optical fiber core at the bottom end of the multi-core optical fiber core corrosion hole; filling a solidified glue into the multi-core optical fiber core corrosion hole, and waiting for the solidified glue to completely solidify, thereby solving the problem of coupling connection of the split single-mode optical fiber core and the multi-core optical fiber.

The present invention provides a method for predicting water ripples in bevel grinding. The method comprises the following steps: cutting raw steel at the center position of its plate width along the length direction of the raw steel and performing acid corrosion treatment on the raw steel; dividing the cross section into three equal parts along the thickness direction of the raw steel to form a middle region and two side edge regions; measuring the primary carbide diameter in each region, measuring the width distance between the primary carbide in each region and the thickness edge of the raw steel closest to the primary carbide in each region, and measuring the thickness of the raw steel; and calculating the ratio of the width distance to the thickness of the raw steel; if ① the primary carbide diameter in the middle region is ≥5μm and the position of at least one primary carbide in the middle region satisfies the following: a / w<0.4, or ② the primary carbide diameter in the two side edge regions is ≥3μm and the position of at least one primary carbide in the two side edge regions satisfies the following: a / w<0.4, the method is rated as "B" and is prone to generating water ripples in bevel grinding; if the above ① and ② are not satisfied, the method is rated as "A" and is not prone to generating water ripples in bevel grinding.

The invention relates to a natural gas boiler flue gas waste heat deep recovery and condensate water treatment process in the technical field of natural gas boilers. The process comprises the steps of flue gas primary cooling, flue gas deep condensation, condensate water collection and neutralization, condensate water purification and recycling, and waste heat comprehensive utilization and intelligent control. Through heat exchange, the temperature of flue gas is reduced to 80-100 DEG C, the water inlet temperature of the boiler is increased, the heating energy consumption of the boiler is reduced, and the heat efficiency of the boiler is improved by about 5-8%; the cooled flue gas enters a high-efficiency condenser, so that the temperature of the discharged flue gas is reduced to be below the dew point, and the energy-saving rate can be increased by 15%; condensate water is collected and neutralized, an alkaline neutralizer is added, the acid corrosion risk is eliminated, follow-up pipelines and equipment are protected, the neutralized condensate water is divided into two paths after suspended solids are removed, one path is conveyed to a boiler softened water tank, the other path is used for cooling system supplementary water or plant miscellaneous water, dependence on municipal water supply is reduced, and the energy-saving and environment-friendly effects are achieved. And gradient utilization of water resources is realized, 1 ton of raw water is saved for recycling each ton of condensate water, and wastewater discharge is reduced.

The invention relates to a sample processing method for characterizing the doping state of a barium titanate-based MLCC dielectric ceramic microcell. The sample treatment method for characterizing the doping state of the barium titanate-based MLCC dielectric ceramic micro-area comprises the following steps: (1) pre-treating the barium titanate-based MLCC dielectric ceramic to obtain a sample of which an internal effective doping area is exposed; (2) soaking the sample of which the internal effective doped region is exposed in an acid solution for acid corrosion, and then cleaning and drying to obtain a sample subjected to acid corrosion; and (3) depositing a conductive layer on the surface of the sample subjected to acid corrosion to obtain the sample for characterizing the doping state of the barium titanate-based MLCC dielectric ceramic microcell for characterization testing.

The application relates to the field of resin coatings, and particularly discloses a coating containing a resin composition and a preparation method and application thereof. The coating containing the resin composition is prepared from raw materials including a resin composition, a curing agent and an auxiliary material mixture, and the resin composition, the curing agent and the auxiliary material mixture are used in a weight ratio of 100:30-50:50-150 of the resin composition, the curing agent and the auxiliary material mixture; wherein the resin composition is composed of isocyanuric acid triglycidyl ester, bisphenol F type ring sulfur resin and tetraglycidyl amine type epoxy resin. The preparation method is that the auxiliary material mixture is added into the resin composition and the curing agent in a certain proportion respectively, mixed uniformly and then mixed, and finally the coating containing the resin composition is obtained. The coating has good bonding strength, good high-temperature resistance, acid corrosion resistance, rapid cooling resistance and rapid heating resistance, and the surface drying time meets the construction requirement, and the coating can be applied in a wet desulfurization chimney inner wall coating.

The invention relates to the technical field of metal surface treatment process auxiliary equipment, and discloses a method for prolonging the service life of a loading hanger for a special polishing and washing process, which comprises the following steps: S1, a spray gun nozzle is matched with carborundum to carry out sand blasting treatment on the hanger; s2, an alkali washing degreasing agent is matched with ultrasonic power cleaning equipment for cleaning; s3, the hanging tool is put into an oven to be heated step by step, and a Teflon powder material is evenly sprayed and attached to the surface of the hanging tool from top to bottom through a spray gun; s4, after spraying is completed, the hanging tool is moved into a constant-temperature oven, the temperature is set, constant-temperature curing is conducted, and then heating is stopped till the hanging tool is naturally cooled to the normal temperature; the titanium alloy hanger base body and the Teflon protection layer are used in cooperation, hydrofluoric acid corrosion resistance and high temperature resistance of Teflon are utilized, a compact protection film is formed on the surface of the hanger, and passive film damage and metal corrosion reaction are avoided; and meanwhile, the binding force of the protective layer and the base body is improved through the sand blasting roughening process, and the service life of the hanger is prolonged.

The utility model discloses an electrochemical test experimental device for boiling nitric acid corrosion in a high-temperature reduced-pressure environment, which relates to the technical field of electrochemical test and consists of a reduced-pressure boiling corrosion reaction system, an electrochemical test system, a heating system, an acid gas absorbing and drying system, a vacuum degree control system and an automatic integrated control system. The decompression boiling corrosion reaction system is connected with the acid gas absorption and drying system, the vacuum degree control system and the heating system are respectively connected with the acid gas absorption and drying system and are in contact with the decompression boiling corrosion reaction system, and an automatic integrated control system is adopted to control the experimental device. The experimental device disclosed by the utility model can test and simulate the electrochemical corrosion behavior of high-temperature reduced-pressure boiling nitric acid in the environment of the evaporator for spent fuel post-treatment, and can realize weight loss and electrochemical test of various materials under the condition of reduced-pressure boiling strong corrosive solution at the same time.

The invention discloses an armored sand-ceramsite bimodal proppant based on performance matching as well as a preparation method and application thereof, and relates to the technical field of oil and gas exploitation. The proppant comprises ceramsite and armored sand which are compounded according to the mass ratio of (20: 80)-(60: 40), the volume density ratio of the ceramsite to the armored sand is 0.9-1.1, the median particle size ratio of the ceramsite to the armored sand is 1.5-3.0, it can be ensured that the proppant is evenly and stably conveyed to a target crack, the ceramsite forms a bearing framework, gaps are filled with the armored sand, and a synergistic and stable composite supporting structure is constructed. According to the proppant, the four-in-one performance matching design of volume density, breakage rate, acid solubility and particle size is adopted, the obtained proppant is superior to a conventional proppant in breakage resistance, acid corrosion resistance and long-term flow guide performance, the preparation cost is low, the defects of performance mismatch, system failure and the like of the conventional proppant can be overcome, and the proppant has wide application prospects in hydraulic fracturing construction of oil and gas fields.