87results about How to "Corrosion control" patented technology

A fuel cell system, which may be powering a vehicle propulsion system (159), includes a fuel cell power plant having a stack (151) including a plurality of fuel cells (12), each having a cathode (19) and anode (17) separated by a membrane (16), and an air pump (174) connected to reactant air flow fields through a diverter valve (172). A controller (185) is responsive to normal and high demand to cause the diverter valve to allow air to flow from the pump to the reactant air flow fields, and is responsive to low demand to cause said diverter valve to divert air directly into ambient so that it does not reach the cathode, thereby to reduce open circuit voltage conditions that promote degradation of the cathode, and to prevent excessive performance decay. An auxiliary load (220) can be in the diverted air flow, either ahead of or after the diverter valve. Energy storage (200, 201) works with the vehicle propulsion system.

A sensor senses a characteristic of an environment, e.g., humidity. The sensor has a substrate with strips of material that is sensitive to corrosion as a result of the characteristic. The strips are configured to respond differently to the characteristic. By means of repeatedly measuring the resistances of the strips, the environment can be monitored in terms of accumulated exposure to the characteristic. The strips are manufactured in a semiconductor technology so as to generate accurate sensors that behave predictably.

The invention provides a chemo-mechanical polishing slurry for copper, and its application. The slurry comprises abrasive particles, a complexing agent, an oxidant, a corrosion inhibitor, and at least one organic phosphate surfactant. The slurry has the advantages of maintenance of a high copper removal rate, improvement of the saucerization and the over polishing window of polished core wires, few pollutants the surface of polished copper, and no corrosion.

The invention discloses a plasma etching remainder detergent, which contains fluoride, organic amine, a solvent and water. The detergent has strong washing capability, can effectively remove plasma etching remainder on a metal wire (Metal), a channel (Via) and a metal pad (Pad) wafer, has smaller etching speed to non-metal materials (such as SiO2, ion enhanced tetraethoxy silane silicon dioxide (PETEOS), silicon, low dielectric material and the like), partial metal materials (such as Ti, Al and Cu) and so on, can be used for batch immersion type cleaning mode, batch rotation spray type cleaning mode and uniwafer rotation type cleaning mode, has larger operation window, and has excellent application prospect in semiconductor wafer cleaning and other micro-electronic fields.

The invention relates to a protection device for sacrificial anodes and sacrificial cathodes in reinforced concrete structures in the atmospheric environment; wherein, the reticular sacrificial anodes are electrically connected with steel bars in concrete to form a protection system for the sacrificial anodes and sacrificial cathodes; the protection device is characterized in that the sacrificial anode is embedded in active mortar which is laid on the surface of the reinforced concrete; the sacrificial anode adopts pure zinc or zinc alloy; the active mortar consists of Portland cement, aggregates, water, synthetic fibers and active additives, and the water-cement ratio is 0.35 to 0.55:1 and the cement-sand ratio is 0.3 to 0.6:1; the active additives are lithium bromide or lithium nitrate with the mixing amount of 0.05 to 0.50g / cm <3>; the synthetic fibers are selected from polypropylene fiber, polyethylene fiber, cellulose and / or glass fiber with the mixing amount of 0.05 to 0.5 percent; the protection device also comprises a protection method; the protection device saves human and material resource and has low price and service life as long as 20 years; the active mortar does not shrink or crack and is lower in resistivity, high in intensity and stable in the open circuit potential of the sacrificial anode.

The invention provides a circulating cooling water bypass flow water treatment system and a bypass flow water treatment method. The bypass flow water treatment system comprises a bypass flow water fetching unit, an electrochemical water treatment device connected with bypass flow water fetching unit, a cyclone hydraulic separator connected with the electrochemical water treatment device, and a sewage discharging unit connected with a sewage discharging port of a reaction chamber and a bottom flow port of the cyclone hydraulic separator, the electrochemical water treatment device comprises the reaction chamber, an anode arranged at the top end of the inside of the reaction chamber, a scraper positioned between the reaction chamber and the scraper and a driving device driving the scraper and positioned below the reaction chamber, and an overflow port of the cyclone hydraulic separator is connected with a circulating water system. The bypass flow water treatment system controls water quality to be within a proper range by controlling balance among water quantity, minerals, suspended matters and ecology, so that the problems of scaling, corrosion, the suspended matters and microorganisms in the circulating cooling water system are solved.

The invention provides an application of an organic phosphate surfactant in self-stopping polishing. The organic phosphate surfactant has the advantages of maintenance of a high copper removal rate, improvement of the saucerization and the over polishing window of polished copper wires, few pollutants on the surface of polished copper, no corrosion and the like.

Disclosed is a corrosion control method for annular space tubing and casings of an oil field water injection well. A construction technology comprises the steps of cleaning dirt on walls of the annular space tubing and casings up by an A agent or B agent formula, then, feeding a corrosion control treating agent with a certain concentration into annular spaces, and cleaning the annular spaces again and replacing the corrosion control treating agent after a period to protect the walls of the tubing and casings against corrosion for a long time. According to the corrosion control method, corrosion of annular space media to the tubing and the casings is reduced substantially, service lives (life)of the tubing and the casings of the water injection well can be prolonged by more than one time, the cost is low, the construction technology is simple and convenient, and effective technical support is provided for high yield and stable yield of oil fields.

The invention provides an anti-fouling lighting system (1) configured for preventing or reducing biofouling on a fouling surface (1201) of an object (1200) that during use is at least temporarily exposed to a liquid, by providing an anti-fouling light (211) to said fouling surface (1201), the anti-fouling lighting system (1) comprising: —a lighting module (200) comprising a light source (210) configured to generate an anti-fouling light (211); and —an energy system (500) configured to locally harvest energy and configured to provide electrical power to said light lighting module (200), wherein the energy system (500) comprises (i) a sacrificial electrode (510), and (ii) a second energy system electrode (520), wherein the energy system (500) is configured to provide electrical power to the lighting module (200) when the sacrificial electrode (510) and the second energy system electrode (520) are in electrical contact with the liquid.

The invention provides a nitrogen injection gas well annular protection liquid capable of inhibiting oxygen corrosion and a preparation method thereof, and belongs to the technical field of corrosion protection of oil and gas wells. A nitrogen injection gas well annular protection liquid system is prepared from a corrosion inhibitor, a bactericide, a pH regulator, an oxygen scavenger, a density modifier and a scale inhibitor. The annular protection liquid comprises the following components in percentage by mass: 10%-12% of an imidazoline corrosion inhibitor, 0.5%-2.5% of an isothiazolinone fungicide, 3%-5% of an alkanes alcohol amine pH regulator, 6%-8% of a sulfite and oxime compound deoxidant, 10%-20% of an organic acid salt density regulator, 0.5%-1.5% of an organic phosphonic acid scale inhibitor, and the balance of water; and in necessary conditions, an appropriate amount of anti-swelling agent is added. The annular protection liquid provided by the invention can well control the annular oxygen corrosion problem of the nitrogen injection gas well and has the advantages of small damage to a reservoir, strong stability and environmental protection.

The present invention relates to the field of water treatment, and discloses a method for treating sulfur-containing circulating cooling water. The method comprises: adding a chlorine-containing oxidizing agent and a composite corrosion inhibitor to sulfur-containing circulating cooling water, and controlling the total alkalinity of the sulfur-containing circulating cooling water at 100-200 mg / L, wherein the residual chlorine in the sulfur-containing circulating cooling water is 0.1-0.8 mg / L with the use amount of the chlorine-containing oxidizing agent, and the composite corrosion inhibitor contains a water-soluble zinc salt, an organic polymer type water treatment agent, and a phosphorus-containing corrosion inhibitor. According to the present invention, by controlling the total alkalinity and the residual chlorine and pouring the specific kind of the composite corrosion inhibitor in the matched manner, the corrosion of the sulfur-containing circulating cooling water can be effectively controlled, the carbon steel corrosion rate meets the technical requirement of less than 0.1 mm / a, and the carbon steel test tube adhesion rate meets the technical requirement of less than 20 mg / (cm2.month); and although the composite corrosion inhibitor containing the water-soluble zinc salt is used, the zinc salt deposition cannot cause the over-standard of the adhesion rate, such that the system does not require the complete replacement after the sulfur-containing material leaks so as to reduce the energy consumption.

A compressor, characterized in that a steel is used as the base material for the other sliding material vane 10 and nitrided, a CrN or DLC film is formed on the surface by PVD treatment, and a Ni-Cr-Mo cast iron is used for the other corresponding sliding material piston 9. It is possible in such a configuration to suppress the temperature rise by sliding friction of the sliding materials, such as the vane tip region 10a and the peripheral region of piston 9 that are vigorously slid, relax decomposition of the refrigerant, and suppress corrosion by hydrogen fluoride generated in reaction with water and oxygen, and thus to provide a compressor higher in reliability.

An anticorrosion mechanism for the water chamber of steam condenser in turbine is composed of coated anticorrosion layer and sacrificial anode protector. A process for preparing said coated anticorrosion layer includes such steps as washing for removing oil, blasting sand for removing rust, thermally spraying aluminium, and coating epoxy coal asphalt paint. Said sacrificial anode is welded in water chamber or to communicating tube. Its advantages are high anticorrosion effect and low cost.

The invention provides a preparation method for a foam draining corrosion inhibitor. The preparation method comprises the steps that 1, alkylphenol polyoxyethylene is added in a reaction kettle, and then sulfamic acid is added, and a temperature-programmed reaction is performed to obtain alkylphenol polyoxyethylene ether sulfonate; 2, lauric acid imidazoline is synthesized, and then the alkylphenol polyoxyethylene ether sulfonate is added to obtain alkylphenol polyoxyethylene ether sulfonic acid imidazoline salt; 3, the alkylphenol polyoxyethylene is added in the reaction kettle, then the sulfamic acid is added, the temperature is increased, a reaction is performed, then diethanol amine is added, and the reaction is continuously performed to obtain sulfonic acid diethanolamine salt of the alkylphenol polyoxyethylene; 4, fatty amine polyoxyethylene ether is added in the reaction kettle, the sulfamic acid is added, the temperature is increased, a reaction is performed, then ammonia water is added, and the reaction is continuously performed to obtain sulfonic acid amine salt of the fatty amine polyoxyethylene ether; 5, the reactants are added in the reaction kettle, alkyl trimethyl benzyl quaternary ammonium salt and the fatty amine polyoxyethylene ether are added and mixed with water, and then a reaction is performed through heating to obtain the foam draining corrosion inhibitor. The foam draining corrosion inhibitor can effectively control corrosion of media in well washing and liquid draining process.

The invention provides optical glass which is excellent in interior quality and has excellent transmittance and anti-devitrification property. The optical glass comprises the components in percentages by weight: positive ion: 8-25% of P<5+>, 5-20% of Al<3+>, 20-50% of Ba<2+>, 15-40% of Sr<2+>, 0.5-8% of Mg<2+>, 1-10% of Ca<2+>, 0-10% of La<3+>, 0-10% of Gd<3+> and 0-10% of Y<3+>; negative ions: 40-90% of F<-> and 10-60% of O<2->. Through a reasonable formula design, the optical glass has the excellent interior equality, transmittance and anti-devitrification property while has the refractive index of 1.48-1.58 and the abbe number of 75-83.

The invention discloses a preparation method of a corrosion inhibitor for inhibiting corrosion of supercritical CO2 to low-carbon microalloyed steel, belonging to the field of corrosion resistance. The preparation method comprises the steps of firstly, adding higher fatty acid into a three-neck flask provided with a condensation and reflux device, a water separator and an S-shaped condensation pipe, vacuumizing, replacing N2 2-4 times, adding a proper amount of polyethylene polyamine and a water-carrying agent under the protection of N2 gas, and heating until the reaction enters an acylation stage; then, continuing to heat to a cyclodehydration temperature after the acylation reaction is ended, and heating until the reaction is ended; carrying out reduced pressure distillation to remove redundant water-carrying agent and water in the product, and recrystallizing to obtain the corrosion inhibitor imidazoline. An imidazoline derivative is prepared through the steps of reacting for 3h while continuously stirring imidazoline and benzyl chloride at the temperature of 50-90 DEG C according to the molar ratio of 1:1.1; after the reaction is ended, adding thiourea with the same molar weight as imidazoline, heating to 90-110 DEG C, continuously stirring and reacting for 1.5-2h. The corrosion inhibitor is low in dosage, free of pollution, simple in production, incapable of injuring human bodies and capable of effectively controlling the corrosion of supercritical CO2 to low-carbon microalloyed steel.

The invention provides low-cost oil-based annulus protection fluid applicable to a CO2 flooding well and a preparation method thereof and belongs to the technical field of corrosion protection of an oil and gas well. A low-cost oil-based annulus protection fluid system applicable to the CO2 flooding well is prepared by compounding engine oil, a corrosion inhibitor, a bactericide, an oxygen removing agent, a density regulator and a surfactant. The annulus protection fluid is prepared from the following components in percentage by mass: 1 percent to 3 percent of a morpholine derivative compoundcorrosion inhibitor, 0.8 percent to 1.6 percent of halogenated hydantoin bactericide, 3 percent to 5 percent of the oxygen removing agent, 5 percent to 30 percent of an organic acid salt density regulator, 3 percent to 5 percent of a non-ionic type polyoxyethylene type surfactant and the balance of the engine oil. The oil-based annulus protection fluid provided by the invention has a very good protection effect on a shaft tubular column of the CO2 flooding well and has the advantages of good high-temperature stability, good low-temperature freezing resistance and long-period stability; meanwhile, the refrigeration engine oil is used as a dispersant, so that the low-cost oil-based annulus protection fluid has the advantages of low cost and the like.

Relating to the field of water treatment, the invention discloses a treatment method for sulfur-containing circulating cooling water. The method includes: adding a chlorine-containing oxidizing agent and a compound corrosion inhibitor into sulfur-containing circulating cooling water, and maintaining the total alkalinity of the sulfur-containing circulating cooling water at 170-300mg / L. Specifically, the dosage of the chlorine-containing oxidizing agent can bring the residual chlorine in the sulfur-containing circulating cooling water at 0.1-0.6mg / L, and the compound corrosion inhibitor contains a water-soluble zinc salt and an organic polymer type water treatment agent. Through control of the total alkalinity and residual chlorine and cooperation with adding of specific type compound corrosion inhibitor, corrosion of sulfur-containing circulating cooling water can be effectively controlled under the circumstance of a low phosphorus content, and the carbon steel corrosion rate satisfies the technical requirement of less than 0.1mm / a. And the carbon steel test tube adhesion rate is less than 20mg / (cm<2>.month). Although the compound corrosion inhibitor containing a water-soluble zinc salt is still used, the adhesion rate does not exceed the standard because of zinc salt deposition. Therefore, complete replacement of a system is unnecessary after leakage of a sulfur-containing substance, and the energy consumption is reduced.

The invention discloses a method for applying desalinated seawater to a circulating cooling water system. The method includes: taking the desalinated seawater as make-up water and applying it in the circulating cooling water system, and adding a pH regulator and a corrosion inhibitor to keep the pH value of the circulating cooling water at 9-12. Specifically, the corrosion inhibitor contains a first inhibitor and a second inhibitor. The first inhibitor is one or more of vanadate, tungstate and molybdate, and the second inhibitor can be urotropin and / or thiourea. The method has the characteristics of small corrosion on circulating cooling water equipment and environmental-friendliness.

The invention discloses a method for applying desalinated seawater to a circulating cooling water system. The method includes: taking the desalinated seawater as make-up water and applying it in the circulating cooling water system, and adding a corrosion inhibitor and a pH regulator to keep the pH value of the circulating cooling water at 9-12. Specifically, the corrosion inhibitor contains a first inhibitor and a second inhibitor. The first inhibitor is one or more of vanadate, tungstate and molybdate, and the second inhibitor is one or more of gluconate, borate, silicate, lignosulfonate and tannin. The method has the characteristics of small corrosion on circulating cooling water equipment and environmental-friendliness.

The invention relates to the technical field of ocean anticorrosion engineering, in particular to a jacket platform far anode type corrosion control device and a use method thereof. The jacket platform far anode type corrosion control device comprises double reference electrodes (6), an auxiliary anode (3), an anode cable (2) and a cathode cable (5), wherein the auxiliary anode (3) is far from a jacket platform (8) and arranged on the bottom of the sea, the double reference electrodes (6) are arranged on the middle lower portion of the jacket platform (8), a rectifier (1) is arranged on the top of the jacket platform (8), a potential detection device is arranged on the rectifier (1), the potential detection device is connected with the double reference electrodes (6), the double reference electrodes (6) are arranged on the middle lower portion of the jacket platform (8) and symmetrically arranged on two sides of jacket platform (8), the auxiliary anode (3) is connected with an anode of the rectifier (1) through the anode cable (2), and a cathode of the rectifier (1) is connected with the jacket platform (8) through the cathode cable (5). The jacket platform far anode type corrosion control device and the use method of jacket platform far anode type corrosion control device are simple in structure, effective in method, convenient to install, long in service life, and low in cost.

The invention relates to the technical field of water treatment, in particular to a non-oxidizing bactericide for water treatment. The non-oxidizing bactericide for water treatment comprises the following components in percentages by weight: 1-10% of isothiazolinone, 1-5% of glutaraldehyde, 10-50% of water, 1-4% of sodium bromide, 1-6% of organic bromide, 1-8% of a SQ8 bactericide, 1-5% of methylene dioxycyanate and 1-10% of an organic amines bactericide. The invention provides the non-oxidizing bactericide for water treatment. In the non-oxidizing bactericide for water treatment, several substances are compounded according to a certain mass ratio, the circulating water sterilizing effect of the compounded substances is obviously higher than that of independently used one of the several substances, chemical agent resistance cannot be caused easily, the toxicity is small, the environmental hazard is low, and therefore, the non-oxidizing bactericide for water treatment is a bactericide which meet the requirement of sustainable development.

The invention belongs to the technical field of oil and water well pipe column underground cathode protecting and corrosion on-line monitoring, and particularly relates to an oil and water well pipe column underground cathode protecting and corrosion on-line monitoring device and method. According to the oil and water well pipe column underground cathode protecting and corrosion on-line monitoringdevice, by arranging a shell, an underground cathode protecting module connected within the shell and used for providing the cathode protecting current for an oil and water well pipe column, an underground corrosion on-line monitoring module and a ground cathode protecting monitoring and on-line corrosion monitoring module connected within the shell and used for on-line measuring of the corrosionrate of the pipe column, through the four steps of configuring the ground cathode protecting monitoring and on-line corrosion monitoring module, mounting the underground corrosion on-line monitoringmodule and the underground cathode protecting module, conducting debugging of the underground corrosion on-line monitoring module and the cathode protecting module and conducting inspection of the ground cathode protecting monitoring and on-line corrosion monitoring module, and the oil and water well pipe column underground cathode protecting and corrosion on-line monitoring device and method arelow in power consumption, long in protecting distance, high in effect, low in initial input cost, high in reliability, and high in stability and accuracy.

Disclosed herein are the methods of using a cationic alkyl polyglycoside in a corrosion control composition to reduce corrosion for metal surfaces in a water system. The disclosed methods or compositions are found to be effective than those methods or compositions including commonly used corrosion inhibitors for water systems.

A dismantling-free stiffened composite template comprises a bonding layer on the inner side and a stiffening layer on the outer side, wherein the bonding layer is formed by pouring cement paste or concrete materials, the outer lateral surface of the bonding layer is connected with the inner lateral surface of the stiffening layer, the stiffening layer is formed by pouring the concrete materials, and a network-shaped framework is arranged in the stiffing layer. The invention further provides a manufacturing method and a using method of the dismantling-free stiffened composite template. The dismantling-free stiffened composite template has the advantages of: (1) shortening using cycle of the template and improving working efficiency; (2) being convenient to operate and low in cost; (3) being good in anti-crack performance and high in strength; (4) facilitating later-stage beautifying or maintenance treatment; (5) being capable of improving a protective layer, improving the durability of the main body structure and simultaneously saving construction cost; (6) requiring no secondary decoration beautifying by means of the protective layer on the outer lateral surface of the stiffing layer, reducing the later-stage construction cost and having certain effect.

The invention relates to a corrosion inhibitor and a preparation method thereof. The corrosion inhibitor comprises, by weight: 50-70% of Mannich base, 10-20% of phosphate, 10-20% of isopropanol, and 10-20% of sodium molybdate. The preparation method of the corrosion inhibitor comprises: adding N-methylaniline into a three-neck flask, heating the flask to 80 DEG C, and adjusting the pH value to 2 with concentrated hydrochloric acid; heating the flask to 95 DEG C, adding acetone into the flask, and heating the flask to 150 DEG C; adding formaldehyde and benzaldehyde into the flask, maintaining the temperature at 150 DEG C, and performing reflux for 4h while performing stirring to obtain Mannich base; and compounding, by weight, 50-70% of Mannich base, 10-20% of phosphate, 10-20% of isopropanol, and 10-20% of sodium molybdate to prepare the corrosion inhibitor. The corrosion inhibitor can be used at a high temperature of 180 DEG C. When the concentration of the corrosion inhibitor is 100 ppm, an N80 iron sheet is corroded by stratum water of the Tahe Oilfield for 6h at 180 DEG C, and the corrosion inhibition rate is 90.04%.

The invention relates to the field of crude oil storage and transportation, in particular to a treatment system and method for dehydration and desalination of crude oil. The treatment system for dehydration and desalination of the crude oil comprises a crude oil storage tank and a backflow pipeline, wherein the two ends of the backflow pipeline are both communicated with the bottom of the crude oil storage tank to form a closed loop, and the backflow pipeline is provided with a delivery pump; the backflow pipeline is provided with an injection port of a demulsifying agent and a corrosion inhibitor. According to the method for dehydration and desalination of the crude oil, the crude oil storage tank is used for separating oil and water in the crude oil; the discharged water is circularly conveyed into the crude oil storage tank, and oil and water separation is carried out again; in the backflow process, an appropriate quantity of demulsifying agent and corrosion inhibitor are added, desalination and dehydration of the crude oil are carried out better through a certain water discharge temperature and standing time, and the pressure of a downstream water treatment unit is reduced. Themethod has the advantages that the technological requirements are simple, field construction is easy, and the method is convenient and fast.

An inhibitor which can control the corrosion of the galvanic couple is made up of the aliphatic polyoxyethylene ether 1-70%; the propiolic alcohol 0.01-30%; the water 0-70%; diaminoethane 0-30%; the ethanol 0-70%. It has the good effect of controlling the corrosion of the galvanic couple.

The invention relates to a corrosion inhibitor and a preparation method thereof. The corrosion inhibitor comprises, by weight: 50-70% of Mannich base, 10-20% of phosphate, 10-20% of isopropanol, and 10-20% of sodium molybdate. The preparation method of the corrosion inhibitor comprises: adding N-methylaniline into a three-neck flask, heating the flask to 80 DEG C, and adjusting the pH value to 2 with concentrated hydrochloric acid; heating the flask to 95 DEG C, adding acetone into the flask, and heating the flask to 150 DEG C; adding formaldehyde and benzaldehyde into the flask, maintaining the temperature at 150 DEG C, and performing reflux for 4h while performing stirring to obtain Mannich base; and compounding, by weight, 50-70% of Mannich base, 10-20% of phosphate, 10-20% of isopropanol, and 10-20% of sodium molybdate to prepare the corrosion inhibitor. The corrosion inhibitor can be used at a high temperature of 180 DEG C. When the concentration of the corrosion inhibitor is 100 ppm, an N80 iron sheet is corroded by stratum water of the Tahe Oilfield for 6h at 180 DEG C, and the corrosion inhibition rate is 90.04%.