213results about How to "Solve corrosion" patented technology

The invention belongs to the technical field of environment protection, and relates to a device and a process for temperature difference crystallizing ammonia process desulfurization, which is especially suitable for the ammonia process modification and newly-built desulfurization of the original calcium process desulfurization device. The device comprises a desulfurization tower, a densifying device, a gas-liquid heat exchanger, a circulating pump, a concentration circulating pump, a magma pump, a concentration crystallization tank and a drying system, wherein the desulfurization tower, the circulating pump, the magma pump and the drying system adopt the devices in the original calcium process desulfurization; the lower part of the densifying device is provided with a gas distributor, andthe upper part thereof is provided with spray heads which are arranged in 2-3 layers; spray heads in the desulfurization tower are arranged in 2-4 layers, a liquid supplementation pipe is connected with the spray heads at the lowest layer in the desulfurization tower; the concentration crystallization tank is a tank with a conical bottom part; and the upper part of the concentration crystallization tank is provided with a pipeline to be connected with the bottom of the densifying device, the middle of the concentration crystallization tank is provided with a pipeline to be connected with theconcentration circulating pump, and the bottom is provided with a pipeline to be connected with the magma pump. The invention can farthest utilize the original devices on the premise of guaranteeing the normal desulfurization efficiency, thereby saving the investment, reducing the energy consumption and eliminating the secondary pollution.

The invention discloses an anchoring structure for a liquid-injection corrosion-resistant anchor rod or anchor cable and a construction method thereof. The anchoring structure comprises a resin end-anchored anchor rod or anchor cable body arranged in an anchor hole, wherein a grouting-stop plug is also arranged at the opening of the anchor hole; an anchor rod head or an anchor cable head is exposed out of the anchor hole from the plug hole of the grouting-stop plug; the grouting-stop plug is also provided with two plug holes; a liquid injection nozzle is inserted into one plug hole and chemical grout is filled into the anchor hole through the liquid injection nozzle; an exhaust pipe with two open ends is inserted into the other plug hole; a check-valve ball and a return spring are arranged in the liquid injection nozzle; a locking slot connected with grouting equipment is reserved on the peripheral surface of the liquid injection nozzle; the length of the exhaust pipe is equivalent to that of the end-anchored anchor rod or anchor cable; and exhaust holes are reserved on the peripheral surface of the exhaust pipe close to the bottom of a drilled hole. The anchoring structure solves the problem of sealing water and preventing corrosion of anchor rod holes at the positions such as an arch part and the like, not only can serve as permanent support, but also can serve as temporary support.

The invention discloses a making method of proton exchange film fuel battery pile in the fuel battery technical domain, which comprises the following steps: (1) pressing plane MEA into wave shape under heating condition; (2) adopting micro-fine pushing technique to punch the hyperthin plane metal plate; punching the plate with hole into wave shape to mate wave-shaped MEA; obtaining monopole board; (3) adopting laser welding technique to weld a couple of monopole board into double-pole board; (4) plating a layer of conductive polyaniline on the metal surface through circulating volt-ampere method. The invention improves the reacting efficiency and energy density, which lightens the weight and resists corrosion.

The invention discloses water borne epoxy intermediate paint. The intermediate paint comprises a component A and a component B, and the weight ratio of the component A to the component B is between 0.5 and 10, wherein the component A comprises the following ingredients in percentage by weight: 23-55 percent of water borne epoxy resin curing agent, 0.1-1 percent of wetting dispersant, 1-5 percent of antirust pigment, 5-10 percent of tinting pigment, 1-5 percent of filler, 1-2 percent of film forming auxiliary, 0.1-1 percent of defoaming agent, 0.1-0.5 percent of flatting agent, 0.01-0.5 percent of antiseptic, 0.5-2 percent of rust inhibitor, 0.01-0.1 percent of rheology modifier and 36.09-49.9 percent of softened water; and the component B comprises the following ingredients in percentage by weight: 10-30 percent of self-emulsified water borne epoxy resin and 70-90 percent of softened water. By compounding a self-emulsified epoxy resin emulsion and a self-emulsified water borne epoxy resin curing agent, the mechanical performance and the salt mist resistance of the paint can be improved, and the environmentally friendly requirement can be fulfilled.

The invention discloses an anti-corrosion antistatic coating made of waterborne acrylate grafted epoxy resin and a preparation method thereof and relates to the technical field of production of a coating. According to the invention, carbon nano tube is selected as an antistatic additive; and a film forming matter is waterborne acrylate grafted epoxy resin emulsion. The characteristics of the acrylate resin and epoxy resin can be effectively integrated into a whole; the prepared anti-corrosion antistatic coating is good in storage stability, good in construction property, fast to dry after being coated, smooth in dried film, and excellent in mechanical behavior, antistatic property, acid resistance, alkali resistance, salt water resistance and the like.

The invention discloses a light high-heat conducive nano composite material and a preparation method thereof; wherein, the composite material is formed by mixing 50 to 99 wt (weight percent) percent of black lead powder basic body material and 1 to 50 wt percent of nano materials with high-heat conducive performance. The preparation method comprises: a. selecting the black lead powder with a granularity between 0.1 and 100 microns and the nano carborundum powder and nano silicon powder with a granularity between 10 and 500 nanometers; b. mixing the black lead powder, the carborundum powder and the silicon powder materials under a stirring condition; simultaneously adding a macromolecular caking agent and obtaining the precursor powder of the composite material by carrying out drying and dispersing to the mixed materials; and c. thermosetting and shaping the precursor powder under an oxygen-free atmosphere. The composite material of the invention has the characteristics of easily-obtained and cheap materials, low production cost, light weight, and good heat radiation effect, and can partially or completely replace a metal heat radiating material.

The invention relates to a compound corrosion and scale inhibitor which comprises the following raw materials according to mass ratio: 15%-30% of organic phosphonic acid, 10%-20% of acrylic acid or acrylic acid copolymer, 2%-10% of poly-maleic acid, 1%-3% of azole ramifications, 15%-30% of multivariate organic sulfonate, 2%-6% of dimethyl formamide and 20%-35% of water. The compound corrosion and scale inhibitor of the invention is used for a system which employs normal water as circulating cooling water, so as to solve corrosion problem caused by circulating water of normal-water to equipment. Corrosion rate of copper product is lower than the national standard of 0.005mm/a, thereby generating no equipment scaling caused by calcium phosphate deposition. Compared with corrosion inhibitors of the same kind, the compound corrosion and scale inhibitor has a lower dosage and is effective in corrosion and scale inhibiting. The compound corrosion and scale inhibitor is simple in operation, convenient, quick, safe and efficient.

The invention relates to a preparation method for a TA15 titanium alloy surface corrosion resistant and abrasion resistant ceramic coating. The invention solves the problems of bad abrasion resistance of TA15 alloys and severe corrosion of the TA15 and metals which contact the TA15 when the TA15 contacts other dissimilar metals for use in corrosive environment. The invention comprises the following steps that: the TA15 titanium alloys after surface grinding and ultrasonic cleaning are arranged inside a stainless steel bath body which is provided with alkaline electrolytes; the TA15 titanium alloys are used as an anode and the stainless steel bath body is used as a cathode; micro-arc oxidation is performed under the condition of 400 to 600 volt pulse voltage, 400 to 800 herz frequency, 4 to 20 percent duty ratio and 0 to 50 DEG C temperature. The shear strength of the oxide coating obtained by the method reaches 50 to 80 million pascals; when the oxide coating is used on a component of an airplane, a ship or a naval vessel, the coating prevents direct contact of dual components of dissimilar metals and prevents the metals from being corroded.

The invention discloses a catalyst using a metal oxide as a carrier for fuel cells and application thereof. The catalyst is characterized in that: the metal oxide as the carrier has catalytic oxygen evolution function simultaneously, and a noble metal with catalytic oxygen reduction function is supported on the metal oxide; the nanoparticles of the noble metal are highly dispersed on the surface of the metal oxide as the carrier, wherein the mass fraction of the noble metal is 2 to 70 percent in the catalyst. The catalyst alone or the catalyst mixed with platinum black in a certain proportionis applied to bifunctional oxygen electrodes for utilized regenerative fuel cells. Compared with the traditional mechanical mixture of platinum black and an oxide from catalytic oxygen evolution reaction, the fuel cell and water electrolysis performances of the cells are greatly improved, and the performance is close to that of a commercial Pt / C catalyst in fuel cells. The catalyst is applied to fuel cell oxygen electrodes to effectively solve the problems that the activity of the catalyst is deceased by the corrosion of the carrier.

The embodiment of the invention provides a car body structure of a railroad car. The car body structure comprises a base frame, side walls, a car roof and end walls, wherein the base frame comprises abase frame skeleton and a lower cover board arranged at the base frame skeleton; the base frame skeleton comprises base frame longitudinal beams arranged from one end of the base frame skeleton to the other end thereof; side walls comprise side wall skeletons and side wall boards arranged at the side wall skeletons; the side wall skeletons comprise side wall columns in Z-beam structures and sidewall longitudinal beams which are in the Z-beam structures and arranged between the corresponding side wall columns; the car roof comprises a car roof skeleton and a car roof board arranged at the carroof skeleton; and the car roof skeleton comprises car roof curved beams in the Z-beam structures. Through the improvement of the structures of the large parts of a body structure in the prior art, the car body structure of the railroad car realizes the overall spraying of anti-corrosive coatings on a car body skeleton and solves the problem of easy corrosion of the car body skeleton.

The invention discloses a suspension rudder blade applied to a water surface vehicle or an underwater vehicle. The rubber blade comprises a rudder stock area steel frame (1), a composite framework (2), a damping and/or sound-absorbing material (5), buoyancy filling core materials (6) and composite skin (7), and the rudder stock area steel frame (1) is fixedly connected with the composite framework (2), so that an overall framework structure of the rudder blade is formed, and the surface layer of the overall framework structure of the rudder blade is coated with the composite skin (7), so that a watertight structure is formed, gaps between the overall framework structure of the rudder blade and the composite skin (7) are filled with the buoyancy filling core materials (6), and the space around a rudder stock of the rudder stock area steel frame (1) is filled with the damping and/or sound-absorbing material (5). The solid composite rudder blade high in rigidity and low in weight has the advantages of being high in bending resistance/ torsional resistance, resistant to corrosion, low in underwater weight and low in noise.

The invention relates to a titanium alloy pipe for petroleum and natural gas conveying and a preparation method thereof. The titanium alloy pipe consists of the following components in percentage by mass: 0.1-2.4% of Al, 0.2-0.32% of O, Fe not more than 0.10%, C not more than 0.08%, N not more than 0.05%, H not more than 0.015%, and the balance of Ti. The titanium alloy pipe is prepared through such procedures as ingredient smelting, rod forging, hot perforation, hot rolling, hot sizing, hot straightening and surface sand blasting. The prepared titanium alloy pipe has the characteristic of resisting H2S and CO2 corrosion at 150 DEG C, solves the problem of easiness in corrosion of traditional pipeline steel pipes for petroleum and natural gas conveying, prolongs the service life of conveying pipelines, reaches the surface roughness of the inner and outer walls below 3.2 microns, solves the problem of blockage of petroleum conveying pipes caused by waxing on the inner walls of the pipes at the time of conveying petroleum, reduces the loss and the cost, and is excellent in application prospect.

The invention discloses a dissolution technology of high alumina fly ash by a method of sulphuric acid, comprising the following steps: mixing high alumina fly ash with dilute sulfuric acid in proportion to obtain an original pulp A; sending the original pulp A into a dissolution unit through a dissolution charging pump, preheating through grade 1-3 sleevings to obtain a preheat pulp B; heating the sleevings to heat the preheat pulp B to obtain a heating pulp C; sending the heating pulp C in a digester for carrying out insulation dissolution to obtain a dissolved pulp D under the conditions of insulation and pressure maintaining; and carrying out 3-level self-evaporation cooling on the dissolved pulp D, and then sending the cooled dissolved pulp D and an acid sludge washing liquor E into a dilution trap to obtain a mixed pulp F. According to the invention, alumina is dissolved out from the high alumina fly ash and enters in the solution, and the dissolution rate of alumina is 85-90 %, so that the preparation for subsequent production process is made; the high alumina fly ash is utilized reasonably, the cost is low, the advantage of economic rationality is achieved, and the problem of corrosion of devices in the dissolution process is solved.

This invention is about a method to antisepticize railway and increase its surface conductivity, which contains only two steps: 1. use high pressure gas to eject high-speed hard granule to the railway surface, in order to make a deoxidated rough coat on it; 2. metal spraying, use method of combustion or electric arc to fuse the metal alloy thread constantly moving on the railway surface, add a driven nozzle when it reaches to the melting point, spray the molten alloy onto the railway surface. The combustion method mentioned refers to autogenous welding and the electric arc method refers to adding a voltage between two alloy thread and keeping them moving constantly at an angle. The alloy thread discharges and becomes melting at the point of intersection. The advantage of this invention is it is suitable on the outside, meanwhile low cost, short machining period, easy to carry away, safe operation and strong adhesion between the rail surface and worked coat.

The invention discloses a novel steel structure building system comprising a steel pipe concrete column, a steel main beam, an auxiliary beam, a floor and a wall surface, wherein the floor is an assembled steel bar truss floor support plate, and the auxiliary beam is a precast concrete auxiliary beam; the wall surface is a CCA board and aerated concrete composite lath, the composite lath comprises an upper layer, a core layer and a lower layer, the upper layer and the lower layer are CCA boards, the core layer is an aerated concrete layer, the core layer is covered on the lower layer, and the upper layer is covered on the core layer. The novel steel structure building system disclosed by the invention is accurate in stress, simple in member connection, convenient and quick in construction, convenient for industrial production, beneficial for reducing the environmental pollution and improve the living environment, and good in economical efficiency.

The invention discloses a corrugated tray bridge adopting toothed multi-pole T-type joint projection welding. The corrugated tray bridge comprises a bottom plate (1), bottom plate protrusions (11), bottom plate protruding end face teeth (111), bottom plate grooves (12) and side plates (2); the bottom plate protrusions (11) and the bottom plate grooves (12) are constantly arranged at intervals to form the bottom plate (1) in a corrugated shape, two edges of the bottom plate protrusions (11) are provided with multiple protruding points to form the bottom plate protruding end face teeth (111), and the bottom plate protruding end face teeth (111) on two sides of the bottom plate (1) are welded to thee side plates (2) of the bridge to form the corrugated tray bridge. According to the corrugatedtray bridge, the achievement of the production process of the projection welding of the bottom plate and the side plates of a light and enhanced tray cable bridge is ensured, the difficult problem ofthe protection of welding thin plates through gas of a light enhanced bridge is solved, the difficult problem that the anti-corrosion performance and appearance quality need to be restored though surface processing after hot dip galvanized steel plates and stainless steel plates are welded is solved, and the pollution in surface processing procedures is avoided.

The invention relates to an alkylate treatment method, and mainly solves the problem that in the prior art, organic acid in alkylate can corrode follow-up equipment. Through the adoption of the technical scheme that the alkylate treatment method sequentially comprises the following steps: feeding an alkylation reaction product into an adsorption bed with an absorbent to obtain a deacidified gas phase reaction product, wherein the absorbent is a solid alkali absorbent, cooling the gas phase reaction product, feeding into an oil-water separator for separation to obtain an oil phase product and a water phase product after cooling the gas phase reaction product, feeding the oil phase product into a follow-up fractionating system, and feeding the water phase product into a follow-up sewage treatment system, the technical problem is well solved, and the purification method can be applied to industrial production process of alkylation.

A salt or CaO coated with hydrophobic nanoparticles comprises an inner part and an outer coating, forming a particle with a permeable membrane keeping liquid inside and letting gas pass. Said inner part comprises at least one selected from a salt and CaO and said outer coating comprises hydrophobic nanoparticles. Known machines and processes can get enhanced functionality the particles comprising salt and nanoparticles. For machines working according to matrix and hybrid principles the particles can act as a matrix, thereby substituting expensive matrix material. Further applications include storage of chemical energy. A device is adapted to perform an absorption process, said device comprising at least one particle. Advantages include that corrosion is reduced or even eliminated. The long term stability of absorption machines is increased and migration of salt in liquid and gas phase is avoided.

The invention discloses a preparation method of a tungsten carbide coating layer sprayed on a surface of an aluminum base material through explosion. The preparation method comprises the following steps: (1) the surface of an in-situ synthesis TiB2 particle-reinforced aluminum base material is pretreated by adopting an oil removing and shot blasting process; (2) a wear resisting and corrosion resisting WC-10Co4Cr coating layer is prepared on the surface of the in-situ synthesis TiB2 particle-reinforced aluminum base material by adopting a pulse explosion spraying method; and the temperature of the aluminum base material is controlled within 60-120 DEG C; (3) after the spraying is finished, the coating layer is grinded and finished by adopting a diamond grinding wheel; and (4) the coating layer is closed by adopting epoxy resin sealant. The method can prepare the coating layer on the surface of a composite material of a propeller hub plywood of a connecting piece of a helicopter rotor system so as to improve the corrosion resistance of the surface of the TiB2 particle-reinforced aluminum base composite material, and can effectively prevent the invalidation caused by fretting wear and surface scratching so as to prolong the fatigue fracture resisting service life of the material above 3 times.

The invention provides antibacterial paint, anticorrosive paint, an antibacterial and anticorrosive coating and an oil transportation pipeline. The antibacterial and anticorrosive coating comprises a slow-release antibacterial layer and a heavy anticorrosive layer, wherein the thickness of the heavy anticorrosive layer is 50-200 micrometers, and the thickness of the slow-release antibacterial layer is 20-80 micrometers. The inner wall of the oil transportation pipeline is coated with the heavy anticorrosive layer, and the surface of the heavy anticorrosive layer is coated with the slow-release antibacterial layer. Compared with the prior art, the slow-release antibacterial and anticorrosive oil transportation pipeline has the advantages that the defects that an oil transportation pipeline on the market is poor in antibacterial effect and high in cost, and an existing oil transportation pipeline with the antibacterial effect is short in antibacterial life and poor in anticorrosive property are overcome.

A recovery device of waste water heat energy from aluminium-plastic pipe indirect heat exchange is prepared for forming user side circulation loop by waste water heat exchange coil, water source side circulation water pump, pipeline control valve, etc; sending the working media back to waste water heat exchange coil for recirculation after heat is obtained through water source heat pump set, sending said working media to fan coil for absorbing heat through user side circulation loop and sending heat exchanged cold working media to water source heat pump set for recirculation through connection pipeline.

The invention discloses a preparation method of a terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint. The method includes: firstly adopting solution polymerization, stirringa hydrophilic vinyl monomer, a fluorine-containing acrylate monomer and an oil-soluble initiator in a solvent evenly and carrying out reaction for a period of time, then adding a functional acrylic monomer or long-chain acrylate monomer as a third monomer for further reaction for a period of time to obtain a fluorine-containing terpolymer surfactant; then mixing the fluorine-containing terpolymersurfactant with an aniline monomer and an oxidant evenly, and carrying out reaction for a period of time to obtain super-hydrophobic polyaniline; and finally dispersing the prepared super-hydrophobicpolyaniline evenly in a resin matrix to prepare the polyaniline super-hydrophobic composite anticorrosive paint with excellent anticorrosive performance. The terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint provided by the invention solves the problems of poor waterproofness and corrosion resistance of the resin matrix itself, and can greatly improve the long-acting anti-corrosion performance of metals when used as an anticorrosive paint.

The molded composite material tray of the present invention is produced with natural material, non-alkali glass fiber, plastic and other organic polymer. It is produced through molding, and during the production, plastic, wood dust, glass fiber and polymer additive are mixed homogeneously in material mixer and screw extruder, weighed, molded in mold and pressed with press. The tray has the advantages of light weight, high strength, high temperature resistance, high toughness, high corrosion resistance, etc. and may be used widely.

The invention discloses a sunscreen bar containing a water-soluble component, which belongs to the technical field of special cosmetics. The sunscreen bar containing water-soluble component is prepared from the components of, by weight, 5.00 to 40.00 part of sun-screening agent, 1.00 to 10.00 part of emulsifying agent, 1.00 to 30.00 part of water-soluble component, 10.00 to 92.00 parts of emollient and 1.00 to 20.00 part of powder. According to the invention, the water-soluble component is added into the sunscreen bar; the defect that water-soluble components (a water-soluble skin conditioner,a sun-screening agent, a film-forming agent, a humectant, a preservative and the like) cannot be added into a traditional pure oil sunscreen bar is overcome; the selection range of the raw materialsis widened; the formula cost and greasy feeling are reduced; moisturizing experience can be provided while moisturizing is achieved; and particularly, the sunscreen index can be increased by effectively reducing the 'window effect' by adding the water-soluble sun-screening agent which has a synergistic effect with an oil-soluble sun-screening agent.