33results about How to "Efficient corrosion inhibition" patented technology

The invention discloses washing liquid used in the semiconductor industry to wash plasma etching residues. The washing liquid contains citric acid / citrate buffer solution, fluorides, macromoledular corrosion inhibitor, anti-freeze agent and solvent. The washing liquid can effectively wash the plasma etching residues during the process of manufacturing a semiconductor, have low etching velocity on nonmetals and metal substrates such as Si, SiO2, tetraethoxy silane silicon dioxides (PETEOS), low-medium materials, Ti, Al, Cu and so on, is safe and harmless to the environment and the human body, and has good application prospect in the microelectronic field such as washing of semiconductor wafers and so on.

The invention discloses a solid corrosion and scale inhibitor for an oil field, which relates to the technical field of chemical medicine reagents used for the oil field. The solid corrosion and scale inhibitor comprises the following ingredients: 2-phosphonic acid butane 1, 2, 4-tricarboxylic acid PBTCA, polyethyleneglycol, sodium hexametahposphate, span-60 and stearic acid, wherein each ingredient accounts for the mass percent of the sum of all the ingredients as follow: 30 percent to 40 percent of 2-phosphonic acid butane 1, 2, 4-tricarboxylic acid PBTCA, 10 percent to 15 percent of polyethyleneglycol, 10 percent to 15 percent of sodium hexametahposphate, 15 to 25 percent of span-60 and 20 percent to 30 percent of stearic acid. The invention is particularly suitable for well tubes of oil-gas wells with server corrosion and scale conditions, and has good corrosion and scale inhibition effects on underground pipe posts and equipment.

The invention discloses an acidification corrosion inhibitor based on an interpolymer indolizine derivative as well as a preparation method and application thereof. The acidification corrosion inhibitor contains the interpolymer indolizine derivative; the interpolymer indolizine derivative is prepared by carrying out decarboxylation on heterocyclic alkali including (substituted) quinoline, (substituted) pyridine and the like, and carboxymethyl heterocyclic alkali quaternary ammonium salt obtained by alpha-haloacetic acid, and then carrying out intermolecular addition polymerization reaction onquaternary ammonium salt of the heterocyclic alkali including the (substituted) quinoline, the (substituted) pyridine and the like. The acidification corrosion inhibitor disclosed by the invention has relatively good corrosion inhibition performance under the condition that common corrosion inhibition synergists including alkynol and the like do not need to be compounded; the use amount of the acidification corrosion inhibitor is less and the acidification corrosion inhibitor can reach, even be better than the requirements of an acidification corrosion inhibitor performance testing method andfirst-grade to third-grade standards in evaluation indexes SY / T 5405-1996 when being independently used.

The invention discloses an acidizing corrosion inhibitor based on a dimer indolizine derivative and a preparation method and application of the acidizing corrosion inhibitor. The acidizing corrosion inhibitor contains the dimer indolizine derivative; and the dimer indolizine derivative is mainly obtained by further intermolecular dimerization of active alpha-cetyl trimethyl ammonium chloride of heterocyclic alkali such as (substituted) quinolone and (substituted) pyridine under alkali acceleration. The acidizing corrosion inhibitor has good corrosion inhibition under the condition that a common corrosion inhibition synergist such as alkynol does not need to be compounded, the use amount is small, and when the acidizing corrosion inhibitor is used independently, requirements of first-levelto third-level standard in an acidizing corrosion inhibitor performance testing method and an evaluation index SY / T 5405-1996 can be met and are even higher.

The invention discloses a medical device rust removing agent. The medical device rust removing agent comprises, by mass percent, 5%-50% of organic acid, 5%-30% of a surface active agent, 5%-15% of a corrosion inhibitor, 5%-10% of a solvent, 1%-10% of a bactericide, 0.01%-1% of essence and the balance pure water, and the total amount is 100%. According to the medical device rust removing agent, the new corrosion inhibitor is used as a raw material for preparing the rust removing agent, the beneficial effects that efficient corrosion inhibition and scale inhibition and chelation are achieved, no toxin exists, and rinsing is easy are achieved, rust removing is conducted efficiently, and a device can also be effectively protected. The preparing method is simple, the performance is reliable, environment friendliness is achieved, no toxin, harm and pollution exist, and the medical device rust removing agent is ideal.

The invention discloses a preparation method of a solid corrosion-inhibition scale-inhibition bar used for an oil field, which relates to a production method of a chemical medicament used for the oil field. The preparation method comprises the following steps of: (1) mixing 30 to 40 percent of 2-phosphonobutane-1,2,4-tricarboxylic acid, 10 to 15 percent of polyethylene glycol, 10 to 15 percent of sodium hexametaphosphate, 15 to 25 percent of Span-60 and 20 to 30 percent of stearic acid evenly, wherein the percent is the mass percent of the sum of each component occupying all the components; and (2) putting all the evenly mixed components into a bar type mold, pressing into a bar type by using a press machine and forming a finished product, wherein the pressure applied by the press machine is 15 to 20 tons. The method has the advantages of simple preparation process, even mixing of the components, trouble saving and labor saving, so that the method is suitable for mass and industrialized production and large-scale popularization and application.

The invention provides a multifunctional sulfur elimination agent as well as a preparation method and application thereof, and belongs to the technical field of oil gas field development. The invention provides the multifunctional sulfur elimination agent, which is prepared from the following ingredients in parts by weight: 50 to 60 parts of triazine derivatives, 25 to 35 parts of sterilization corrosion inhibitors and 5 to 15 parts of mutual solvents, wherein the sterilization corrosion inhibitors are one or more of quaternary ammonium salt sterilization corrosion inhibitors, oxazoline sterilization corrosion inhibitors and pyridine sterilization corrosion inhibitors. The triazine derivatives are used as sulfur elimination agents to be matched with the sterilization corrosion inhibitors;under the effects of the mutual solvents, by limiting the dosage of various ingredients, the multifunctional sulfur elimination agent with higher sterilization, corrosion inhibition capability and sulfur elimination capability is obtained through compounding. Through the embodiment, the corrosion inhibition rate of the multifunctional sulfur elimination agent provided by the invention is 86 to 95percent, the sterilization rate is as high as 99 percent, and the sulfur elimination rate can reach 98 percent.

The invention discloses a steel corrosion inhibitor and a preparation method thereof, and belongs to the technical field of metal corrosion and protection. The corrosion inhibitor is prepared in the step of compounding 1,1-di(benzothiazole-2-group)-2-(N-benzylcarbazole-2-group)ethylene as a core corrosion inhibiting component with an organic solvent, surfactant, dispersant and water. The corrosioninhibitor has obvious anti-corrosion effects on various kinds of steel in all conditions of acid, alkali and salt. The steel corrosion inhibitor has the advantages of simple formula, simple and convenient preparation process, safety in operation, low toxicity, high efficiency and environmental friendliness.

The invention provides a plant type composite efficient corrosion inhibitor. The plant type composite efficient corrosion inhibitor is prepared from the following raw materials in percentage by mass: 12 to 66.0 percent of plants, 5.0 to 16.0 percent of sodium molybdate, 1.5 to 12 percent of sodium gluconate, 3.5 to 25 percent of sodium tartrate, 0 to 23 percent of zinc sulfate and 4.0 to 23.0 percent of monopotassium phosphate. The corrosion inhibitor disclosed by the invention is high in corrosion inhibition capability and can achieve a corrosion inhibition effect on a chlorine salt type snow-melting agent. After the corrosion inhibitor is added, the corrosion of the chlorine salt type snow-melting agent to metal and concrete and the harm to vegetation can be reduced. The corrosion inhibitor is mainly prepared from plants, is non-toxic, and is a very efficient and environment-friendly corrosion inhibitor. The invention further provides a preparation method and application of the plant type composite efficient corrosion inhibitor.

The invention discloses a corrosion inhibitor for a closed soft water circulating cooling water system and an application. Anti-corrosion protection is carried out on thermal equipment, so that the service life of system equipment in a closed soft water circulating cooling water environment is effectively prolonged. The corrosion inhibitor has the characteristics of being efficient, phosphorus-free and environment-friendly. The corrosion inhibitor is characterized by comprising a steel corrosion inhibitor and a copper corrosion inhibitor, wherein the steel corrosion inhibitor comprises triethanolamine borate, ascorbic acid and urotropine; and the copper corrosion inhibitor comprises benzotriazole.

The invention discloses an oil and gas field gathering and transportation pipeline corrosion inhibitor capable of resisting the corrosion of high-calcium produced water. The gathering and transportation pipeline corrosion inhibitor comprises the following components in percentage by mass: 70 to 95 percent of macromolecular imidazoline-based ionic liquid and 5 to 30 percent of micromolecular imidazoline-based ionic liquid. The corrosion inhibitor disclosed by the invention is an environment-friendly corrosion inhibitor for inhibiting the corrosion of the high-calcium produced water in an oil and gas field gathering and transportation system, and has the characteristics of better corrosion inhibition effect, no solvent, environment friendliness, good water solubility and small dosage.

The invention provides a high-efficient detergent for an automotive windscreen glass surface, and relates to the field of glass cleaning. The detergent, is prepared from the following raw materials: sodium dodecyl benzene sulfonate, a surface active agent, essence, palm wax, sodium molybdate, boric acid, triethanolamine, naphthenic oil, sodium silicate, sodium citrate, span, phenol, kieselguhr, butyl stearate, methylthionine chloride, monopotassium phosphate, a plant extracting solution, sodium citrate, ethyl alcohol, acetone, dipropylene glycol monomethyl ether, a defoaming agent, an antifreeze agent and an appropriate amount of deionized water. The detergent cannot be frozen to damage automobile facilities when the outside temperature is lower than minus 20 degrees, not only can be usedfor effectively clearing stains on the glass surface, but also can be beneficial to improving the glossiness of the glass surface, has the characteristic of high cleaning efficiency, and also has theeffects on preventing freezing and increasing the degree of finish.

The invention discloses a diluted hydrochloric acid and hydrogen sulfide corrosion resistant oil-refining distillation tower top corrosion inhibitor. The diluted hydrochloric acid and hydrogen sulfidecorrosion resistant oil-refining distillation tower top corrosion inhibitor comprises the ingredients of, in percentage by mass, larger than or equal to 98% of pyridyl ionic liquid and the remainingis NaBr, and the pyridyl ionic liquid is N-alkyl pyridine tetrafluoroborate or N-alkyl pyridine hexafluorophosphate. The diluted hydrochloric acid and hydrogen sulfide corrosion resistant oil-refiningdistillation tower top corrosion inhibitor has the characteristics of being good in corrosion resistance effect, less in use quantity, low in cost, good in water solubility and environmentally friendly in the industrial production and application process.

The invention relates to the field of organic metal corrosion inhibitors, in particular to a hyperbranched organic ionic liquid type metal corrosion inhibitor and a preparation method thereof. The synthetic method of the hyperbranched organic ionic liquid type metal corrosion inhibitor is simple, raw materials are easy to obtain, and the yield is high; the environment-friendly dendritic and hyperbranched quaternary ammonium salt nitrogen heterocyclic organic ionic liquid molecule is used as a corrosion inhibitor, can be self-assembled in a corrosive aqueous solution to form regular micro-nano particles, and can generate an extremely strong adsorption effect on the metal surface; and efficient corrosion inhibition on metal in a severe corrosive water medium is realized.

The invention relates to the technical field of petrochemical engineering, and discloses a method for inhibiting production of grease in oxygen-containing compound-to-olefin process and a grease inhibitor composition. The method comprises the following steps: continuously injecting the grease inhibitor composition for theoxygen-containing compound-to-olefin process into a circulating alkali liquorline of an alkali washing tower of an oxygen-containing compound-to-olefin separation unit so as to inhibit the generation of grease, wherein the expression of the injection amount Q is Q = A (b * c), the value of A is 6-12, b is the flow of the product gas at the inlet of the oxygen-containing compound-to-olefin alkaline washing tower, and c is the content of acetaldehyde in the product gas. Byadopting the method, the generation amount of the grease in the alkaline washing tower can be inhibited, the generated grease has a good dispersion effect, the corrosion to equipment is reduced, the mass content of polymers in alkaline liquor can be reduced, the pressure difference of the alkaline washing tower can be reduced, and a better technical effect is achieved.

The invention relates to the technical field of petrochemical industry, and discloses a methanol-to-olefin alkali-washing tower butter inhibitor composition and a method for inhibiting the production of butter. Wherein, the inhibitor composition comprises an alcoholamine compound, a sulfite, a surfactant and a solvent, wherein the alcoholamine compound is selected from one or more of ethanolamine, diethanolamine and triethanolamine, so The sulfite is sodium sulfite. The use of the butter inhibitor can inhibit the production of butter in the alkaline washing tower, has a good dispersion effect on the formed butter, reduces equipment corrosion, can also reduce the mass content of polymers in the alkaline solution, and can reduce the pressure of the alkaline washing tower. Poor, and achieved better technical results.

The invention discloses a preparation method of a solid corrosion-inhibition scale-inhibition bar used for an oil field, which relates to a production method of a chemical medicament used for the oil field. The preparation method comprises the following steps of: (1) mixing 30 to 40 percent of 2-phosphonobutane-1,2,4-tricarboxylic acid, 10 to 15 percent of polyethylene glycol, 10 to 15 percent ofsodium hexametaphosphate, 15 to 25 percent of Span-60 and 20 to 30 percent of stearic acid evenly, wherein the percent is the mass percent of the sum of each component occupying all the components; and (2) putting all the evenly mixed components into a bar type mold, pressing into a bar type by using a press machine and forming a finished product, wherein the pressure applied by the press machineis 15 to 20 tons. The method has the advantages of simple preparation process, even mixing of the components, trouble saving and labor saving, so that the method is suitable for mass and industrialized production and large-scale popularization and application.

The invention relates to the field of preparation of low-carbon alkene from methanol, and discloses a method for inhibiting pressure difference rise of an alkaline washing tower for preparing low-carbon alkene from methanol. The method comprises the steps that an inhibitor composition is injected into the alkaline washing tower of a methanol-to-light olefin separation unit, the inhibitor composition contains an anti-polymerization agent, an antioxidant, a corrosion inhibitor, a surfactant, a cosolvent and a solvent, the anti-polymerization agent is an alcohol amine compound and / or a hydrazinecompound, and the antioxidant is one or more of diisopropanolamine, tert-butyl p-hydroxy anisd and N, N-di-sec-butyl p-phenylenediamine. The method can effectively inhibit the increase of the pressuredifference of the alkaline washing tower for preparing low-carbon alkene from methanol.

The invention discloses a medical device rust removing agent. The medical device rust removing agent comprises, by mass percent, 5%-50% of organic acid, 5%-30% of a surface active agent, 5%-15% of a corrosion inhibitor, 5%-10% of a solvent, 1%-10% of a bactericide, 0.01%-1% of essence and the balance pure water, and the total amount is 100%. According to the medical device rust removing agent, the new corrosion inhibitor is used as a raw material for preparing the rust removing agent, the beneficial effects that efficient corrosion inhibition and scale inhibition and chelation are achieved, no toxin exists, and rinsing is easy are achieved, rust removing is conducted efficiently, and a device can also be effectively protected. The preparing method is simple, the performance is reliable, environment friendliness is achieved, no toxin, harm and pollution exist, and the medical device rust removing agent is ideal.

The invention discloses a composite phosphorus-free corrosion and scale inhibitor applied to a dry quenching waste heat boiler and a preparation method of the composite phosphorus-free corrosion and scale inhibitor. The composite phosphorus-free corrosion and scale inhibitor comprises the following componens in parts by weight: 10-40 parts of hydroxypropyl trimethyl ammonium chloride chitosan, 20-50 parts of sodium gluconate, 10-25 parts of N-isopropylhydroxylamine, 10-30 parts of polyaspartic acid, 5-20 parts of glucoside, 5-20 parts of sodium hydroxide and 20-40 parts of ultrapure water. Thecomposite phosphorus-free corrosion and scale inhibitor is green and environment-friendly, effectively reduces the increase of boiler salt, avoids the influence of excessive use of the composite phosphorus-free corrosion and scale inhibitor on the boiler, enables conductivity rise in water after use to be less than 20 microseconds / cm, obviously reduces boiling frequency and decreases chemical cleaning frequency; and the composite phosphorus-free corrosion and scale inhibitor does not contain phosphorus, is green and environment-friendly, is easy to biodegrade after being discharged, does notgenerate secondary pollution, has efficient corrosion inhibition, scale inhibition, deoxygenation and degradability performances, and is suitable for the dry quenching waste heat boiler.

The invention discloses a solid corrosion and scale inhibitor for an oil field, which relates to the technical field of chemical medicine reagents used for the oil field. The solid corrosion and scale inhibitor comprises the following ingredients: 2-phosphonic acid butane 1, 2, 4-tricarboxylic acid PBTCA, polyethyleneglycol, sodium hexametahposphate, span-60 and stearic acid, wherein each ingredient accounts for the mass percent of the sum of all the ingredients as follow: 30 percent to 40 percent of 2-phosphonic acid butane 1, 2, 4-tricarboxylic acid PBTCA, 10 percent to 15 percent of polyethyleneglycol, 10 percent to 15 percent of sodium hexametahposphate, 15 to 25 percent of span-60 and 20 percent to 30 percent of stearic acid. The invention is particularly suitable for well tubes of oil-gas wells with server corrosion and scale conditions, and has good corrosion and scale inhibition effects on underground pipe posts and equipment.

The invention relates to a corrosion inhibitor for inhibiting corrosion of a chlorine dioxide (ClO2) medium on equipment. The corrosion inhibitor is prepared by amino methylene phosphoric acid or amino methylene phosphate, hydrocarbon imidazoline quaternary ammonium salt, a nonionic surfactant, hexamethylenetetramine and a solvent. An amino methylene phosphoric acid (phosphate) compound with excellent surface activity and metal equipment corrosion inhibition performance is taken as a main agent of the corrosion inhibitor for inhibiting chlorine dioxide corrosion. Compared with the conventional like product, the corrosion inhibitor has the advantages of high-efficiency corrosion inhibition, low toxicity, environmental protection, excellent thermal stability, wide application range and the like, and can effectively alleviate the problem of the chlorine dioxide medium on the equipment in the production, pipeline transportation and storage processes in the industries of petrochemical water treatment and the like.

The invention relates to a high-temperature acidification corrosion inhibitor and a preparation method thereof. The high-temperature acidification corrosion inhibitor is prepared from the following components in parts by weight: 1-5 parts of N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt, 30-50 parts of hydrocarbon imidazoline quaternary ammonium salt, 0-5 parts of sodium molybdate, 5-15 parts of thiocarbamide, 20-30 parts of ethanol and 10-20 parts of water. The preparation method comprises the following steps: adding the raw materials into a reaction kettle in turn, and stirring at 20-80 DEG C for 10-30 minutes to obtain the high-temperature acidification corrosion inhibitor. As the high-temperature acidification corrosion inhibitor contains the N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt with special properties, compared with the conventional acidification corrosion inhibitor, the high-temperature acidification corrosion inhibitor provided by the invention has the advantages of low addition amount, good water solubility, strong temperature resistance, high corrosion inhibition rate and the like. When being used under acidification conditions at 150-200 DEG C, the high-temperature acidification corrosion inhibitor still has good corrosion inhibition effect and compatibility. The invention has the advantages of high corrosion-inhibition efficiency, low toxicity, environmental protection, high temperature resistance, wide application systems and the like, and can be used as the component of a high-temperature acidification liquid corrosion inhibitor.

The invention discloses an oil refinery distillation tower top corrosion inhibitor resistant to dilute hydrochloric acid and hydrogen sulfide corrosion. According to the mass percentage, it comprises: greater than or equal to 98% of pyridyl ionic liquid, the rest is NaBr, and the pyridyl ionic liquid is N-alkane N-alkylpyridine tetrafluoroborate or N-alkylpyridine hexafluorophosphate. The corrosion inhibitor of the invention has the characteristics of good anti-corrosion effect, less dosage, low cost, good water solubility and environmental friendliness in the process of industrialized production and application.

Belonging to the technical field of corrosion and protection, the invention relates to a compound low-phosphorus corrosion inhibitor suitable for an oil field system. The compound low-phosphorus corrosion inhibitor is prepared by mixing a polyaspartic acid aqueous solution, a polyamino polyether methylene phosphonate aqueous solution, an N-(3-aminopropyl)imidazole aqueous solution and a zinc sulfate aqueous solution with equal volume. The invention also provides a preparation method of the compound low-phosphorus corrosion inhibitor suitable for an oil field system. The compound low-phosphoruscorrosion inhibitor suitable for an oil field system provided by the invention can meet the production requirements of the oil field, reduce the production cost and effectively protect pipelines andequipment of the oil field system, not only has efficient and stable performance, and good solubility, but also has biodegradability and low environmental toxicity.

The invention relates to a special cooling liquid for internal combustion locomotives, which comprises the following formula components by weight on the basis of per liter of water: 1200-1800mg / L of sodium nitrite, 1000-2000mg / L of borax, 50-150mg / L of benzotriazole, 300-600mg / L of group VI metal-containing acid or salt thereof, 100-600mg / L of organic carboxylic acid or salt thereof containing more than 6 carbon atoms, and 500-1000g / L of a benzimidazole amine compound. The cooling liquid also comprises an alkaline pH regulator for regulating the pH value range of the cooling liquid to be 9.0-10.5. The cooling liquid disclosed by the invention has an efficient corrosion inhibition effect on various metals in a cooling water system of an internal combustion locomotive, can replace an imported NALCOOL 2000 corrosion inhibitor and has a better effect.

The invention provides a plant-type composite high-efficiency corrosion inhibitor, which is made of the following raw materials in mass percentage: 12-66.0% of plants, 5.0-16.0% of sodium molybdate, 1.5-12% of sodium gluconate, and 3.5-25% of sodium tartrate %, zinc sulfate 0‑23% and potassium dihydrogen phosphate 4.0‑23.0%. The corrosion inhibitor of the invention has strong corrosion inhibition ability, and can exert corrosion inhibition effect on chlorine salt type deicing agent. After adding the corrosion inhibitor, it can reduce the corrosion of the chloride-salt deicing agent to metal and concrete and the damage to the vegetation. The corrosion inhibitor is mainly plant-based, non-toxic, and is a very efficient and environmentally friendly corrosion inhibitor. The invention also provides the preparation method and application of the plant-type composite high-efficiency corrosion inhibitor.

A pickling solid corrosion inhibitor for power plant boilers, belonging to the field of corrosion inhibitors, comprising 12-15 parts of urotropine, 6-8 parts of ammonium thiocyanate, 0.6-1 part of promethazine, and 0.1-0.2 parts of benzotriazole part, 2-5 parts of tin protochloride, 2-5 parts of sodium thiosulfate, 1-3 parts of thiourea, the solid corrosion inhibitor of the present invention except most acids except nitric acid, to the absolute majority of acids except zinc and aluminum Most metals have good corrosion inhibition efficiency, and the present invention fully considers various corrosion and safety hazards such as H+ ion corrosion, H atom corrosion, Fe3+ corrosion, Cu2+ corrosion in the acidic process, and has more comprehensive corrosion inhibition points and higher corrosion inhibition efficiency. Higher, wider range of use and other outstanding advantages.

The invention relates to the field of methanol-to-low olefin production, and discloses a method for inhibiting the increase of pressure difference of methanol-to-low olefin alkali washing tower. The method comprises: injecting an inhibitor composition into an alkali washing tower of a methanol-to-light olefin separation unit, wherein the inhibitor composition contains an anti-polymerization agent, an antioxidant, an anti-corrosion agent, a surfactant, a cosolvent and a solvent, wherein , the anti-polymerization agent is an alcohol amine compound and / or a hydrazine compound, and the antioxidant is a mixture of diisopropanolamine, tert-butyl-p-hydroxyanisole and N,N-di-sec-butyl-p-phenylenediamine one or more of. The method can effectively suppress the increase of pressure difference in the alkali washing tower of methanol to light olefins.

The invention relates to the field of petrochemical industry, and discloses a pressure difference stabilizer composition of an alkali washing tower for methanol to olefins and a method for reducing the pressure difference of the alkali washing tower. The pressure difference stabilizer composition comprises aliphatic amine compounds, thiosulfate, surfactant and solvent, wherein the aliphatic amine compound is selected from isopropylamine and / or diisopropylamine, and the thiosulfate is selected from isopropylamine and / or diisopropylamine. For sodium thiosulfate. The pressure difference stabilizer can reduce the pressure difference of the alkaline washing tower, and can inhibit the production of butter in the alkaline washing tower. The quality content has achieved good technical results.