518results about How to "Good anti-scaling effect" patented technology

The present invention relates to no-phosphate corrosion and scale inhibitor and its application. The no-phosphate corrosion and scale inhibitor consists of polyaspartic acid and/or polyepoxy succinic acid 10-20 wt%, polymaleic anhydride 20-30 wt%, copolymer of acrylic acid and 2-acrylamido-2-methyl propenyl sulfonic acid 15-20 wt%, zinc salt 3-5 wt%, natural organic high molecular compound 5-12 wt%, molybdate 5-8 wt%, and other components 5-20 wt%. It has excellent corrosion retarding performance, high scale inhibiting performance and environment friendship.

A compound inhibition antisludging agent is used for treating high-concentration circulation water, comprising a liquid part and a solid part. Based on that the total weight of the liquid part is deemed to be 100 percent, percentages of each component by weight are: organic phosphonic acid 5-40 percent, organic carboxylic acid 5-40 percent and water 20-90 percent; and based on that the total weight of the solid part is deemed to be 100 percent, percentages of each component by weight are: polymer with antisludging effect 5-35 percent, alkaline agent 45-80 percent, azoles 1-10 percent and zinc salt 1-10 percent. The concentrations of the liquid part and the solid part in the circulating water are that: the solid part: the dosage of the agent added into make-up water is 20-200mg/L; the liquid part: total phosphine kept in the circulating water system is 10-15mg/L. The invention has effects of inhibition, antisludging, sterilization and algae removal upon meeting the requirements of the state, can promote the concentration multiple of the circulating water system up to 7.5 or more and can be operated at normal temperature with good effect and without pre-membrane treatment.

A corrosion-inhibiting and scale-inhibiting agent for treating the water used as circulated cooling water or for boiler is prepared from liquid-state dielectric hydrophobic substance, oil-soluble corrosion inhibitor, water-soluble disperser, and composite sensitive emulsifier. Its advantages are high effect and low dosage.

The invention discloses a reverse osmosis membrane scale inhibitor, and a method for preparing and using the same. The reverse osmosis membrane scale inhibitor contains polymeric scale inhibitors and components selected from phosphono-carboxylic acid scale inhibitors, organic phosphonic acid scale inhibitors and auxiliary agents. The reverse osmosis membrane scale inhibitor is high in scale inhibition efficiency, small in addition, environmental-friendly, and is suitable to be used in environments with organic substances and in a reverse osmosis membrane treatment process for recycling sewage. For wastewater effluents from a biochemical treatment process with a chemical oxygen demand (COD) less than 150mg/l, the reverse osmosis membrane scale inhibitor has good scale inhibition effect on CaCO3, CaCO4, BaSO4, SrSO4 and so on, and can ensure the normal operation of a membrane component and prolong the service life of the membrane component.

The invention discloses a non-phosphate environment-friendly type inhibiting antisludging agent and preparing method, which is characterized by the following: fitting for disposing industrial recirculated cooling water and oil-field sewage disposal system as water treatment agent; using to inhibit water quality and antisludging treatment; possessing good detergency for CaCO3, CaSO4, BaSO4 and SrSO4 dirty; possessing high bearable degree for calcium; possessing good inhibition for corrosion of carbon steel; setting the R1 of the structural general formula as H or HO(CH2)a-; setting the a as 1-5 or one of MO3SCH2CH(OH)CH2- ; setting the R2 as -(CH2)b- and b as 0-6; expressing n as polymerization degree; setting the n as 2-50; setting n as one or several mixed-ion from NH4+ or Na+ or K+ or 1/2Ca2+.

The invention provides a polyaspartic acid complex for a scale inhibitor, which is characterized by being prepared by the following steps of: 1) reacting maleic anhydride, an ammonia-containing substance and water in a mass ratio of 1:((1-1.5):(1.2-2.0) under normal pressure at the temperature of between 50 and 80DEG C for 1 to 2 hours to synthesize maleic acid ammonia; 2) performing polymerization reaction on the maleic acid ammonia at the temperature of between 160 and 200DEG C under normal pressure to generate polysuccinimide; and 3) hydrolyzing the polysuccinimide at the pH of 10-12 and the temperature of between 25 and 50DEG C to generate the polyaspartic acid salt. The polyaspartic acid complex for the scale inhibitor has better scale inhibiting effect on various scaling components such as CaCO3, CaSO4, BaSO4 and SrSO4 in a water treatment system; and through scale inhibition rate testing experiments, the scale inhibition rate is not less than 40 percent, and the polyaspartic acid complex can be widely applied to various water treatment processes, such as a circulating cooling water system, a boiler feed water system, an oil-water water injection system and a seawater desalting system.

The invention discloses a composite water treatment agent of a closed type circulating water system. The formula of the composite water treatment agent comprises carboxylic polymer, gluconate, molybdate, zinc salt, rare-earth element nitrate, azoles corrosion inhibitor and water. The composite water treatment agent of the closed type circulating water system has good corrosion and scale inhibition performance and environmental protection performance, is suitable for systems taking the softened water and tap water as make-up water, is phosphorus-free and nontoxic, is easy for biological degradation, and is also suitable for carbon steel and copper material systems.

The invention discloses a quaternary polymeric form corrosion and scale inhibitor which consists of maleic anhydride, hydroxy-propyl acrylate, acrylic acid, sodium alkyl sulfonate, sodium peroxydisulfate, sodium hypophosphite, isopropyl alcohol and water. The invention also discloses a preparation method of the quaternary polymeric form corrosion and scale inhibitor. The corrosion and scale inhibitor has good performance in inhibiting calcium carbonate scale, calcium sulphate scale, calcium phosphate scale and zinc scale and good dispersing performance for dispersing ferric oxide and is also characterized by corrosion resistance, high temperature resistance, stable molecule structure and low phosphorus content; the whole production process has no emission of 'the three wastes'. The technique of the product of the invention for treating circular cooling water is simple and the product of the invention has the advantages of little dosage, low cost, good effect and good economic benefit and wide social benefit.

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 discloses a multifunctional scale and corrosion inhibitor which integrates four effects, namely, scale inhibition, scale removal, corrosion inhibition and perfillmimg, and a preparation method thereof. The scale and corrosion inhibitor is of a nitrogen-free, non-phosphorus and molybdenum formula, and is prepared by compounding a non-phosphorus scale and corrosion inhibition component, methylbenzotriazole, hydrolytic polymaleic anhydride, sodium molybdate and sodium gluconate. According to the multifunctional scale and corrosion inhibitor, usage of phosphorus and nitrite is avoided, usage of molybdate is reduced, the multifunctional scale and corrosion inhibitor has the characteristics of being efficient, practical, non-toxic, environment-friendly, and low in cost, is applicable for scale and corrosion inhibition of water with high salinity and high degree of mineralization, can be widely applied to water treatment fields such as cold and hot circulating water, softened water and reverse osmosis, and the oilfield exploitation field.

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 a composite corrosion and scale inhibitor, and its application in circulating cooling water treatment. The composite corrosion and scale inhibitor contains oxalic acid and/or oxalate, a sulfonic group-containing copolymer, a scale inhibition additive and a zinc salt, the scale inhibition additive is at least one of organic phosphonic acid, phosphorus-free polycarboxylic acid and phosphorus-free polyacid anhydride, and a weight ratio of oxalic acid and/or oxalate to the sulfonic group-containing copolymer to the scale inhibition additive to the zinc salt by zinc ion is 10-30:2.5-5.5:2-12:1. The composite corrosion and scale inhibitor contains no phosphorus or has a low concentration of total phosphorus, is environmentally-friendly, and is especially suitable for circulating water with the sum of the total alkalinity and the total hardness of above 100mg. The above zinc salt formula containing oxalic acid and/or oxalate realize excellent scale and corrosion inhibition effects.

The invention discloses a preparation method of a novel scale inhibitor epoxysuccinate /acrylic acid/2-acrylamido-2-methyl propane sulfonic acid copolymer which is prepared by the polymerization of epoxysuccinate, acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid under appropriate condition. Compared with the polyepoxysuccinic acid, the ESA/AA/AMPS terpolymer prepared by the method provided by the invention can improve the scale inhibition performance greatly and the scale inhibition effect of calcium carbonate is roughly equal to polyepoxysuccinic acid, while the ability of blocking calcium phosphate scale, calcium sulfate scale and stabilizing zinc are significantly better than that of the polyepoxysuccinic acid. The epoxysuccinate /acrylic acid/2-acrylamido-2-methyl propane sulfonic acid terpolymer is a new water-treatment chemical which has the advantages of excellent comprehensive scale inhibition performance, is free of phosphate, is applicable to a circulating water system with high alkali, high hardness and high concentration rate, and has broad application prospect.

The invention provides a reverse osmosis compound scale inhibitor and belongs to the field of reverse osmosis water treatment. The scale inhibitor comprises the following components in percentage by weight: 10 to 20 percent of 1-hydroxyethylidene-1,1-diphosphonic acid, 30 to 40 percent of hydrolytic polymaleic anhydride, 30 to 40 percent of polyacrylic acid and 10 to 20 percent of sulfonated styrene-maleic anhydride copolymer, and the scale inhibitor comprises also comprises a bactericide. The reverse osmosis compound scale inhibitor fully utilizes the synergistic effect among organic phosphorous scale inhibitors, polycarboxylic acid scale inhibitors and sulfonic acid scale inhibitors, has good scale inhibition and dispersion performance; and when used in a reverse osmosis water inflow system, the scale inhibitor can effectively lighten pollution of calcium carbonate, calcium sulfate and silicate to reverse osmosis membranes and prolongs the cleaning period and service life of the reverse osmosis system.

The invention discloses a non-phosphorus corrosion and scale inhibitor. The non-phosphorus corrosion and scale inhibitor is prepared from the following components in percentage by weight: 8 to 12 percent of hydrolytic polymaleic anhydride, 10 to 15 percent of polyepoxysuccinic acid, 15 to 20 percent of acrylic acid-2-acrylamido-2-methylpropanesulfonic acid multipolymer, 10 to 15 percent of carboxylic acid-sulfonic acid-acrylate terpolymer, 8 to 12 percent of acrylic acid-hydroxypropyl acrylate copolymer, 4 to 8 percent of zinc sulphate heptahydrate and the balance of deionized water. The invention further discloses a preparation method of the corrosion and scale inhibitor. The preparation method comprises the following steps: weighing the components according to the formula; adding the components into a stirrer in sequence; stirring at normal temperature and under normal pressure to obtain the corrosion and scale inhibitor. The corrosion and scale inhibitor disclosed by the invention has the advantages of freeness from phosphorus, adoption of safe and environment-friendly components, simple production process, high scale-inhibiting efficiency, high corrosion-inhibiting performance, prevention of eutrophication of a water body caused by discharge of phosphorus, and very high compatibility; the adhesion of microorganisms to equipment can be reduced effectively, and the corrosionand and scale inhibiting performance can be enhanced greatly.

The invention discloses a scale inhibitor of an ethylene device process water system and a using method thereof. The scale inhibitor of the ethylene device process water system comprises the following components in percentage by mass: 10 to 90 percent of polymerization inhibitor and 10 to 90 percent of dispersant. The using method comprises the step of adding the scale inhibitor of the ethylene device process water system into a water system of an ethylene device process water stripper, wherein the adding concentration of the scale inhibitor of the ethylene device process water system is 5 to 1,000 ppm of the feeding amount of the process water stripper. The scale inhibitor has good double functions of polymerization inhibition and dissipation, is in particular suitable for the ethylene device process water system and can meet the requirement of the process water system on the stable long-period operation.

The invention discloses a cleaning additive for glass bottles and a cleaning method of the glass bottles. The cleaning method and the cleaning additive are used for glass bottle cleaning by a primary alkaline bath and a secondary alkaline bath. The cleaning additive comprises a component A, a component B and a component C, wherein the component A comprises an organic phosphorus chelating agent, the component B comprises peroxide, the component C comprises a defoaming agent, the component A is added into the primary alkaline bath, the component B is selectively added into the primary alkaline bath, the component A and the component B are added into the secondary alkaline bath, and the component C is selectively added into the primary alkaline bath or the secondary alkaline bath. Based on the weight of alkaline solution in the primary alkaline bath or the secondary alkaline bath where the component is added, the adding amount of the component A is 0.05-5%, the adding amount of the component B is 0.1-0.5%, and the adding amount of the component C is 0-0.5%. The alkaline solution in the primary alkaline bath and the secondary alkaline bath is sodium hydroxide solution having a concentration of 1.5-3%. The cleaning additive and the cleaning method can achieve stable and good cleaning effects at a relatively low temperature that is usually 50-70 DEG C.

The invention provides an anti-scaling disperser, which comprises 2-acrylamide-2-methyl propanesulfonic acid copolymer, sodium lignosulfonate, tannic acid, sodium humate and water. 78{>The invention also provides a method for using the anti-scaling disperser by compounding with organic phosphate and zinc salts, or compounding with zinc chloride to 8-12%.