289results about How to "Reduce corrosion" patented technology

A tankless water heater includes a sensitive flow sensor that has a magnetic sensor and a plunger with an imbedded magnet. The plunger is configured to lift in a direction of the magnetic sensor in response to the flow of water thereby changing the state of an output of the sensitive flow sensor. There are electric water heating elements situated within water heating chambers. The sensitive flow sensor and the water heating chambers are fluidly connected in series between a supply of water and at least one hot water spigot. In response to the flow of water, a change of the output of the sensitive flow sensor energizes the electric water heating elements, thereby heating the water.

A system and method for reducing cathode carbon corrosion during start-up of a fuel cell stack. If a long enough period of time has gone by since the last system shutdown, then both the anode side and the cathode side of the stack will be filled with air. If the system includes split sub-stacks, then a start-up sequence uses a fast hydrogen purge through each sub-stack separately so as to minimize the time of the hydrogen/air front flowing through the anode side of the stacks. The start-up sequence then employs a slow hydrogen purge through the sub-stacks at the same time. If the time from the last shutdown is short enough where a significant amount of hydrogen still exists in the cathode side and the anode side of the sub-stacks, then the fast hydrogen purge can be eliminated, and the start-up sequence proceeds directly to the slow hydrogen purge.

The invention is a kind of method of delaying peracid hydrocarbon oil's burning. The process follows this. first, lead the raw material to coking heater to warm-up at the convection section, at upside of the beamy, heat up to temperature of 350 to 450 degree. Second, put outcome into cracking case and distill cymogene hydrocarbon and gas which come out from the top of reactor. Third, heat up the weight crackate, which comes out from the top of reactor, at radiant section of furnace to the temperature of 480-510 degree. Forth burn the outcome in coke chamber and then distill the burned gas to gain coking gas, gasoline, diesel, petrolatum oil and circulation oil. The advantages of the invention is that, first, it can produce peracid base oil by delayed coke equipment. Second, it can delay the coke's canker by peracid base oil and prolong the burning cycle length.

The invention provides a kind of metal anti-corrosion agent, which is made up of 20%-50% imidazole quinolin acrylamine which has fragrant ring, 20%-50% straight chain imidazole quinolin acylamine, 0-5% alkynol and its ramification, 0-60% solvent, the anti-corrosion agent has excellent anti-corrosion rate in strong acid (pH value<3.0) and alkalescence (pH value is 7.0-8.5%).

The invention provides a composite connection method for radiator type products and relates to the technical field of welding methods. The technical problems that a radiator inner cavity is poor in sealing performance, and a friction stir welding tool is high in requirement are solved. The method includes the following steps that a radiator comprises a base plate and a cover plate, the base plateis provided with a process step, and a weld joint position is cleaned completely; the process step of a whole weld joint is coated with a synthesis gluing agent for metal, the cover plate is arrangedfor covering, pressure is applied, glue is made solidified, and adhesion between the cover plate and the base plate is firm; friction stir welding is performed on the butt joint face of the base plateand the cover plate, sealing welding on the weld joint is completed, and a friction stir welding and gluing composition connection joint is formed. By means of the composite connection method for theradiator type products, the sealing performance and the pressure bearing capacity of radiator water channels can be improved, the cross sectional area of the water channels and the distribution density of the water channels are improved, tool requirements are lowered, the radiating performance is improved, the structure is simple, and operation is easy and convenient.

The invention provides a loop heat pipe solar water heater system which comprises a solar water heater and a heat utilizing device. The circulating pipe of the solar water heater comprises an auxiliary electric heater. According to the loop heat pipe solar energy utilization system, the absorbing ability of solar energy is improved, and energy is saved.

The invention provides a beneficiation method for rubidium-containing feldspar quarry. The method comprises the following steps of firstly, sequentially performing grinding and strong magnetic separation on raw feldspar quarry to obtain zinnwaldite and floatation feeding ores; secondly, adding a flotation reagent into the floatation feeding ores for flotation to obtain floatation foam a and flotation tailings b, wherein the flotation reagent comprises an inhibitor and a zwitterion collecting agent; thirdly, performing concentration, reagent removal and desliming on flotation tailings a , subsequently adjusting pH of ore pulp of materials, and adding the zwitterion collecting agent for separating and carrying out flotation on feldspar and quartz to obtain floatation foam b and the flotation tailings b; fourthly, combining the zinnwaldite in the second step with the floatation foam a in the third step to obtain beneficiation rubidium concentrate. According to the beneficiation method provided by the invention, rubidium minerals occurring in mica and potassium feldspar (amazon stone) are recovered by a magnetic separation-flotation combined technology, so that the recovery rate of rubidium ores is improved; in addition, usable quartz and feldspar products are obtained, and the comprehensive utilization rate is high.

The invention discloses a refrigerating liquid for refrigerating foods via a soaking process. The refrigerating liquid consists of the following components in percentage by weight: 15%-25% of F42 high fructose syrup, 15%-25% of ethanol, 5%-10% of sodium chloride, 0.2%-2% of hydrolyzed gelatin and the balance of water. The refrigerating liquid is prepared by means of fully mixing the following raw materials: F42 high fructose syrup, ethanol, sodium chloride, hydrolyzed gelatin and purified water. At the same work temperature, the concentration of the contained ethanol is low, so that the potential safety hazard in production is greatly lowered; besides, the concentration of the contained sodium chloride is low, so that the corrosion to refrigerating equipment can be alleviated; F42 high fructose syrup and ethanol are adopted as main components, so that the production cost of the refrigerating liquid is low and the production technology is simple; in addition, a small amount of hydrolyzed gelatin added in the liquid plays a role of a stabilizer in the refrigerating liquid, thereby being beneficial for prolonging the service life of the refrigerating liquid.

A method of producing reduced corrosion interconnect structures and structures thereby formed. A method of producing microelectronic interconnects having reduced corrosion begins with a damascene structure having a first dielectric and a first interconnect. A metal oxide layer is deposited selectively to metal or nonselective over the damascene structure and then thermally treated. The treatment converts the metal oxide over the first dielectric to a metal silicate while the metal oxide over the first interconnect remains as a self-aligned protective layer. When a subsequent dielectric stack is formed and patterned, the protective layer acts as an etch stop, oxidation barrier and ion bombardment protector. The protective layer is then removed from the patterned opening and a second interconnect formed. In a preferred embodiment the metal oxide is a manganese oxide and the metal silicate is a MnSiCOH, the interconnects are substantially copper and the dielectric contains ultra low-k.

The invention belongs to engine cooling liquid, and particularly relates to engine cooling liquid prepared by utilizing coal ethylene glycol waste. The engine cooling liquid comprises the following components in parts by weight: 10 to 60 parts of deionized water, 40 to 90 parts of effective anti-freezing component in the coal ethylene glycol waste, 0.1 to 5 parts of corrosion inhibitor, 0.05 to 1 part of anti-scaling agent, 0.05 to 1 part of defoaming agent and 0.001 to 0.05 part of coloring agent. Compared with the traditional ethylene glycol cooling liquid, the engine cooling liquid has the following characteristics that the traditional ethylene glycol cooling liquid adopts the ethylene glycol prepared by adopting the petroleum as a raw material, so that the price is high; the anti-freezing component adopted in the engine cooling liquid is the waste of the coal ethylene glycol, so that the cost is low, and waste can be converted into treasure.

The invention relates to a Chinese medicinal mouldproof willow rattan softening agent, which is made of the following raw materials by weight part: 5-7 of sodium bicarbonate, 15-18 of ethanol, 3-4 of sodium silicate, 3-4 of gluconic acid, 15-25 of radix isatidis, 10-12 of honeysuckle, 8-10 of acorus gramineus, 4-5 of povidone iodine, 3-4 of an assistant, and 100 of water. The Chinese medicinal mouldproof willow rattan softening agent adopts weak acid and weak base, which have small corrosion to a surface, and an even softening effect can be achieved. Ethanol and sodium silicate are employed, so that the stem surface can be smooth, and the weaving efficiency can be improved. By using radix isatidis and other Chinese herbal medicines and povidone iodine, mould and moths can be prevented.

The invention discloses a method for preparing anti-vulcanization reversion agent 1,3-bis(citraconimidomethyl)benzene. The method comprises the following steps: mixing itaconic acid, dimethylsulfoxide and disodium hydrogen phosphate according to a ratio, raising the temperature to be 175-195 DEG C, keeping the temperature and reacting for 1-2 hours, removing a solvent, subsequently dehydrating so as to prepare liquid 2-methyl maleic anhydride, further mixing 2-methyl maleic anhydride, m-xylylenediamine, xylene and pyridine according to a ratio, performing reaction under reflux for 3-4 hours at 120 DEG C, distilling under reduced pressure to obtain a crude product, finally recrystallizing the crude product, cooling down, filtering and drying so as to obtain 1,3-bis(citraconimidomethyl)benzene. As no acetic anhydride is used, no acetic acid is generated in the process, so that corrosion on equipment and environmental pollution are greatly reduced; in addition, the product prepared by using the method is high in yield and good in purity, and no equipment needs to be additionally arranged, so that the method is high in practicability.

In general this invention relates to an antifreeze composition that can be used in the cooling systems of internal combustion engines, for example, in heavy-duty diesel engines, light duty trucks and cars. The antifreeze composition can be added to water or other suitable liquid coolant in the cooling system, to lower the freezing point temperature of the coolant and inhibit corrosion of metallic components associated with the cooling system. The antifreeze composition is particularly well suited, although not exclusively, for use with hard water. The antifreeze composition includes an organic acid component comprising adipic acid and at least one of benzoic acid and one or more C₉-C₁₂ dicarboxylic acid—or salts of these acids. The antifreeze composition also includes other anti-corrosive additive, for example, molybdate, nitrite, nitrate silicate azoles and a variety of buffer agents.

The invention relates to a novel rare-earth electrolytic bath. A gap is reserved in the center of each anode, and the bottom surface of each anode is a concave surface being concave from the periphery towards the center. A cathode is correspondingly arranged below each anode. The cathodes are buried in a protruding high-temperature-resisting material. The top of each cathode is an arc convex surface and protrudes out of the high-temperature insulating material. An electrical insulating layer is arranged between the high-temperature-resisting material and each cathode. A metal groove is formed between every two cathodes, and the high-temperature-resisting material is concave downwards to form the metal grooves. A cathode steel bar is located at the bottom of each cathode and connected with the cathode. The space between every two adjacent cathode steel bars is filled with a graphite block. An electrical insulating layer is arranged between each graphite block and the corresponding cathode steel bar. A feeder is arranged on the top of a bath body. According to the novel rare-earth electrolytic bath, the convex surfaces of the cathodes are higher than the high-temperature insulating layers, so that a high-temperature zone of the electrolytic bath is moved upwards. Through the metal grooves designed for the electrolytic bath, the contact area of metal and an electrolyte is reduced, re-dissolution of the metal is restrained, and the current efficiency is improved. The shapes of the anodes of the electrolytic bath are beneficial for discharging of anode bubbles.

This invention belongs to chemical category, it is complex salt field. It is consisted by water, calcium nitrate, calcium chloride, magnesium chloride, sodium chloride, sodium hypochlorite, aluminum chlorate, sodium peroxide and other chemical materials, and odium metasilicate, sodium molybdate, sodium nitrate, sodium tripolyhosphate, benzapyrene three nitrogen azole, sodium benzoate, water quality stabilizer-PTX-CS used as corrosion inhibitor. They are compounded by their attribution; there are solid and liquid states. Its sleet melting and snow removing velocity is quickly, environmental capability is good, and it can efficiently reduce the corruption to metal and cement concrete. Plant growth can be boost, and deodorization, bactericidin, purification water quality, pavement cleaning and other function can be realized to water after cleaning of ice and snow. It can be used widely above -400C, and for protecting city communication through, reducing traffic accident, and ensuring human body and auto safety, it has good effect. Is it fit for city and country road, freeway, airport, plaza, court and bridge.

The invention discloses an additive composition for a polymer, a preparation method of the additive composition and a flame-retardant thermoplastic polymer molding material by using the additive composition. The additive composition is prepared from the following components in percentage by weight: 80-99.99 percent of a component A which is dialkyl hypophosphite with a structure as shown in a formula (I), 0-20 percent of a component B which is alkyl phosphite with a structure as shown in a formula (II), and 0-0.9 percent of a component C which is phosphite with a structure as shown in a formula (III), wherein the component B and the component C are not 0 percent by weight at the same time, and the total amount of the components A, B and C is 100 percent by weight all the time. The additive is applied to a polymer, so that the corrosion degree of a flame-retardant polymer on screws of a mixing combination device can be greatly reduced, equipment processing cost can be reduced, energy and labor loss caused by frequently changing screws in the processing process can be reduced, and the whiteness of a polymer component obtained through extrusion molding is superior to that of a conventional dialkyl hypophosphite modified polymer component.

The invention discloses a method for removing loose color of dye fabric by utilizing multi-frequency ultrasonic wave and a special device thereof, wherein the method comprises the following steps: firstly, a plurality of ultrasonic vibration cases are fixed in a washing container, wherein ultrasonic wave frequencies of ultrasonic vibration cases are different with each other and the range of frequencies is 15-40 KHz, secondly, washing liquid is filled into the washing container to submerge the ultrasonic vibration cases, thirdly, awaiting fabrics being washed are dipped into the washing liquid and each ultrasonic vibration case is started, fourthly, the fabrics are taken out after the finishing of washing, the special device which realizes the above method comprises the washing container, a plurality of ultrasonic vibration cases which are fixed in the washing container and are provided with wire conduits which are provided with connected traverses, wherein one end of the connected traverse is connected with the ultrasonic vibration case and the other end is connected with an ultrasonic generating device.

The invention discloses a method for preparing 2,2,4-trimethyl-1,3-pentanediol single-isobutyrate, which comprises the step of performing an intra-molecular Cannizzaro reaction on an aldol condensation product, which is prepared from isobutyraldehyde at a low temperature, under the action of a catalyst to synthesize the 2,2,4-trimethyl-1,3-pentanediol single-isobutyrate, wherein the catalyst is ametallic oxide heterogeneous catalyst modified by KF, K2CO3 or KOAc which is used as an active center base. The catalyst in the method is simple and easy to prepare, is easy to separate and reclaim and has small corrosion to equipment; and the method is simple to operate and has a mild reaction condition.

A phthalic acid such as terephthalic acid is made soluble in an oil of lubricating viscosity by first mixing it with at least one phosphorus compound. The resulting product is useful for reducing corrosion in a transmission lubricant.

The invention discloses a graphene-containing lead alloy for lead storage battery grids. The graphene-containing lead alloy includes 0.015-0.15% of graphene, 1.0-1.5% of tin, 0.02-0.04% of aluminum, 0.05-0.1% of calcium and 98.21-98.915% of lead. A preparation method of the graphene-containing lead alloy comprises the following steps: putting 2/3 of lead in a lead melting pot, and heating to 680DEG C in order to melt lead; adding graphene to molten lead; adding pure tin strips and pure aluminum strips 20min later, and stirring and mixing for above 0.5h; adding lead sheath packaged calcium, pressing calcium into the bottom of the molten lead by using a bell jar with the bottom provided with leakage holes, slowly stirring and mixing for above 0.5h when the molten lead does not bubble, adding the residual lead into the lead melting pot, continuously stirring after the lead is completely molten, and carrying out ingot casting 1h later. The preparation method has the advantages of simplicity, reliability, simple structure of a used device, and low cost; and the grids made by using the lead alloy prepared through the method have strong creep and corrosion resistance, and can meet deep cycle and heavy current charge and discharge requirements.

The present invention relates to a road bridge surface cooling and snow-melting equipment by utilizing underground natural energy source. It is characterized by that said equipment includes a first circulation pump, its two ends are respectively connected with condenser and one end of first valve, two ends of shallow layer heat-exchanger are respectively connected with one end of first valve, one end of second valve and one end of fourth valve, two ends of said condenser are respectively connected with one end of first valve and one end of second valve, two ends of evaporator are respectively connected with one end of fifth valve and one end of sixth valve, two ends of deep layer heat-exchanger are respectively connected with one end of seventh valve, one end of sixth valve and one end of fourth valve and two ends of second circulation pump are respectively connected with one end of seventh valve, one end of fifth valve and one end of third valve.

Disclosed is a positive photosensitive resin composition containing (A) an alkali-soluble resin, (B) a diazoquinone compound, (d1) an activated silicon compound and (d2) an aluminum complex. Also disclosed is a positive photosensitive resin composition containing (A) an alkali-soluble resin, (B) a diazoquinone compound, (C) a compound having two or more oxetanyl groups in one molecule and (D) a catalyst for accelerating the ring-opening reaction of the oxetanyl groups of the compound (C).

The invention relates to a method using tributyl phosphate resin for fractional extraction to separate zirconium and hafnium; the tributyl phosphate resin is used as an extraction agent, and the zirconium and hafnium are extracted and separated by use of a box-countercurrent mode; the method comprises the following sections: 1), acidification section, to be more specific, using the tributyl phosphate resin as the extraction agent, putting an extraction phase and a mixed acid solution into a box-type extraction tank for countercurrent acidification; (2) extraction section, to be more specific, putting the acidified extraction phase and a material liquid containing the zirconium and hafnium into the box-type extraction tank for countercurrent acidification; (3) washing section, to be more specific, performing reverse-phase washing on the extraction phase with the zirconium being extracted; (4) back extraction section, to be more specific, performing reverse-phase back extraction on the washed extraction phase; and (5) impurity removal section, to be more specific, performing reverse-phase impurity removal on the back extracted extraction phase, using an impurity removal liquid for washing, wherein effluent is used as waste for emissions, and an outflow extraction phase is recycled. The method has the advantages of large extraction phase capacity, high production capacity, no emulsification, low product cost, stable operation, and high product quality.

The invention provides a solar water heater system. The solar water heater system comprises a solar water heater and a heat utilization device, wherein the solar water heater comprises a heat collector, the heat collector is used for absorbing heat of solar energy so as to heat water in the solar water heater, the heat collector is a heat collection metal pipe, the heat collection metal pipe comprises a metal base pipe, and an anti-corrosion layer and a heat absorbing layer sequentially cover the outer surface of the metal base pipe. The invention provides a heat absorption coating with a high absorption rate, and therefore the capacity for absorbing heat of solar energy is improved.

The invention relates to the technical field of graphite surface coatings, in particular to a silicon carbide coating solution used on a graphite surface and a spraying technology thereof. The solution is prepared by evenly mixing four materials comprising industrial silicon powder, graphite powder, graphite glue and a diluent, and is used for the spraying technology on the graphite surface. According to the spraying technology of the invention, the graphite surface is coated with a silicon carbide coating with a non-completely-dense structure, the silicon carbide coating can protect the graphite piece surface to a large extent, can reduce silicon vapor corrosion, can be used on the surfaces of main consumable material parts such as hydrogenation furnace heating rods for polysilicon, heat insulation barrels for monocrystalline silicon, heaters, crucibles and the like, can improve the life of the parts by 40% to 100% without increasing of the costs, and can significantly prolong the service life of the graphite parts.

The invention relates to vehicle fuel containing methanol. The vehicle fuel comprises the following components by volume: 5-95% of methanol and 0.3-10.2% of additive or 5-95% of methanol, 0.1-90% of gasoline and 0.3-10.2% of additive. The vehicle fuel has high octane value, is economical and energy-saving, can reduce emission of gas pollutants and can relatively prolong the service lives of the vehicles even if the content of methanol is higher. Besides, the vehicle fuel overcomes the following common defects of the vehicles using the methanol gasoline: the engine has difficulty in cold start and is easy to corrode and swell; and the fuel is unstable and easy to layer in the case of long-term storage.

The invention relates to a method for welding titanium or titanium alloy with 2219 aluminum alloy and belongs to the field of metal connection. In order to achieve the purpose of the invention, first, a proper transition material needs to be found. The material needs to have great weldability (fusion welding, or high-energy beam welding or brazing) with titanium, titanium alloy and 2219 aluminum alloy, and the material self needs to have high strength and tenacity. Comprehensive performance comparison shows that the material has great brazing weldability with 3A21 aluminum alloy, the titanium and the titanium alloy and has great electron beam welding weldability with 2219 aluminum alloy, and a reliable welding joint can be formed in any case. The connecting technology is successfully used into an XX-1 or XX-2 level PMD management device structure and has a great application effect.

The invention discloses an external embedded type plant protection unmanned aerial vehicle medicine box. The medicine box comprises a medicine box body and a U-shaped fixing plate, wave-resistant plates are arranged in the medicine box body, the inner walls of two sides of the medicine box body each are provided with a sliding groove, and a sliding plate matched with the corresponding sliding groove is arranged in the corresponding sliding groove; the inner side of each sliding plate is fixedly connected with two sides of the corresponding wave-resistant plate, a liquid outlet is arranged in the middle of the lower wall of the medicine box body, and the right wall of the medicine box body is provided with a horizontal liquid inlet; two ends of the upper side of the medicine box body each are provided with an insertion plate, and the inner sides of the two insertion plates are fixedly connected with the outer side of the medicine box body; the upper side of the medicine box body is provided with the U-shaped fixing plate, and the inner sides of two walls of the U-shaped fixing plate each are provided with an insertion groove matched with the corresponding insertion plate; the insertion plates are located in the insertion grooves, a square groove is arranged in the middle of the bottom of each insertion groove, and a clamping block matched with the corresponding square groove isarranged in the corresponding square groove; and the inner side of each clamping block is provided with a spring, and two ends of each spring are separately and fixedly connected with the bottom of the corresponding square groove and the inner side of the corresponding clamping block. The medicine box disclosed by the invention can be firmly fixed on an unmanned aerial vehicle.

Accordingly, the present invention provides a method of forming an electrode having reduced corrosion and water decomposition on a surface thereof. A substrate which has a conductive layer disposed thereon is provided and the conductive layer has an oxide layer with an exposed surface. The exposed surface of the oxide layer contacts a solution of an organic surface active compound in an organic solvent to form a protective layer of the organic surface active compound over the oxide layer. The protective layer has a thickness of from about 0.5 nm to about 5 nm and ranges therebetween depending on a chemical structure of the surface active compound.

The invention discloses a discharged flue gas self-heating technology of wet flue gas desulfurization. Original flue gas is divided into the thionizer entering flue gas and the bypass flue gas. After the thionizer entering flue gas is washed by spraying a doctor solution in a thionizer, purified flue gas is formed and enters a straight discharging chimney. The bypass flue gas is conveyed into the straight discharging chimney. In the straight discharging chimney, the purified flue gas and the bypass flue gas are fully mixed and then discharged into the atmosphere. Mixed flue gas meets the requirement for environment-protection discharging, meanwhile, the bypass flue gas exchanges heat with the purified flue gas, so that the temperature of the mixed flue gas is raised, and the discharging temperature of the mixed flue gas is controlled to reach more than 70 DEG C. The invention further discloses a desulfuration purified flue gas self-heating device. In order to overcome the defects of a GGH, heat flue gas is used for directly heating the purified flue gas, and the heat flue gas and the purified flue gas are mixed and then discharged. The technology is simple, resistance is small, the GGH does not need to be arranged, the maintenance workload of the device is small, and therefore the wet flue gas desulfurization device is more simple and more practical in technology and meets the requirement for long-time efficient operation.