41results about How to "Strong scale resistance" patented technology

The invention discloses an environmental-protective composite inhibiting antisludging agent, which comprises the following parts: inhibiting component, antisludging component and deionized water, wherein the inhibiting component is composed of one or more materials in the molybdate, tungstate, borate, organic substituted carboxylic acid or organic heterocyclic compound; the inhibiting component contains one or more materials in the natural macromolecular compound, epoxy succinic acid or acroleic acid ternary copolymer.

The invention provides a low-phosphorous environment-friendly scale inhibitor adapting to 'three-high' water quality and preparation thereof. The scale inhibitor is prepared from the following raw materials in part by weight: 1, 1.0 to 2.5 parts of polyamino polyether methylene phosphonic acid (PAPEMP); 2, 1.5 to 3.0 parts of polyepoxysuccinic acid (PESA); 3, 1.5 to 2.5 parts of acrylic acid-hydroxypropyl acrylate-AMPS terpolymer; 4, 1.5 to 2.5 parts of liquid caustic soda; 5, 0.5 to 1.0 part of hydrolyzed plymaleic anhydride; and 6, the balance of water. The scale inhibitor is prepared by the following steps of: pumping the raw materials 1, 2 and 3 into a reaction kettle during synthesis, and continuously stirring; and adding the material 4 into 5 and 6, pumping into the reaction kettle, continuously stirring for 35 to 45 minutes, and discharging to prepare the product. The scale inhibitor has good scale-inhibiting effect on carbonate and phosphate and the scale-inhibiting time of 100 hours, and is suitable for a high-hardness high-alkalinity high-mineralization circulating cooling water system and oil field water treatment. Therefore, the original concentration times is improved from 3 times to 5-6 times, the new water can be saved by 10 to 30 percent per year, and the phosphorus content of sewage treated by the scale inhibitor is 1.5 to 3ppm and accords with the national phosphorus discharge standard.

The invention provides a scale inhibition particle as well as a preparation method and application thereof, the scale inhibition particle comprises scale inhibition powder, an adsorption material anda binder, and the binder is a combination of a water-soluble binder and a cured binder; the scale inhibition particle prepared by the invention has the advantages of strong descaling capability, longscale inhibition life, good water resistance, excellent water purification function, good slow release effect, controllable release rate, long action, simple preparation process and low cost, are usedfor water quality scale inhibition treatment, and are especially suitable for scale inhibition treatment of household water.

The invention provides a cleaning method of a boiler. The cleaning method comprises the steps of impurity removing, flushing, soda boiling, flushing, acid pickling, acid liquor jacking and draining and water flushing, rinsing and passivating. According to the cleaning method of the boiler, a soda boiling solution is utilized to react with oil stain on the inner wall of the boiler, the oil stain isthoroughly removed, the soda boiling solution does not contain inorganic phosphate, and the dirt discharge amount is reduced; acid is utilized to react with incrustation, copper scale and iron rust on the inner wall of the boiler in the acid pickling process, the incrustation and the iron rust on the inner walls of the boiler and a pipeline are dissolved, polyaspartic acid in an acid pickling solution has a good scale inhibition capability, and calcium salt can be effectively prevented from being generated; and etidronic acid has a dispersion effect, calcium and magnesium ions in water can bestabilized, on one hand, a corrosion inhibitor can effectively disperse and inhibit the scale, on the other hand, impurities are not introduced into a boiler system, and the dirt discharge amount ofboiler cleaning is reduced. According to the cleaning method of the boiler, a passivation solution is an organic passivation solution, chemical reaction can be generated on the passivation solution and the inner wall of the boiler to generate a passivating film, no ammonium ion is generated, and ammonia corrosion is prevented from being generated to the boiler.

The invention discloses a preparation method of a phosphorus-free green environment-friendly scale inhibitor. The scale inhibitor is characterized by being a quarternary polymerization one and comprising components by weight of 25-40 parts of acomitic acid, 8-20 parts of acrylic acid, 12-18 parts of maleic anhydride, 6-12 parts of sodium alkyl sulfonate, 3-7 parts o fammonium persulfate and 130-220 parts of water. The invention also discloses a preparation method of the phosphorus-free green environment-friendly scale inhibitor. The scale inhibitor prepared by the invention has excellent scale inhibiting effects on scales of calcium carbonate, calcium phosphate and barium sulfate, and characteristics of rust inhibition, high temperature resistance, stable molecular weight and on phosphorus. The whole production process has no ''three wastes (waste gas, waste water and industrial residue)'' discharge. The product of the invention can be used for treating industrial circulating water and oil field water with a simple technology, and has small usage amount, low costs, good effect and good economic benefits and wide social benefits.

The invention discloses a reboiler which comprises a cylinder and a plurality of heat exchange tubes, wherein a material inlet and a material outlet are arranged at two ends of the cylinder respectively; a steam inlet is arranged on the cylinder on the side of the material outlet; and a condensate outlet is arranged on the cylinder on the side of the material inlet. According to the reboiler, a porous layer is processed on inner surfaces of heat exchange tube substrates and the porous layer has a heating surface with increased roughness so as to form an artificial evaporating core, so that the heat transfer efficiency of the heat exchange tubes is increased. Meanwhile, longitudinal grooves are processed on the outer surfaces of the heat exchange tube substrates, circular bulges are arranged in the longitudinal grooves, longitudinal nicks are arranged on a teeth part, the thickness of a liquid film is reduced by utilizing a surface tension and then the condensation effect on the exteriors of the heat exchange tubes is improved. According to the invention, the total coefficient of heat transfer of the reboiler is above 3 times of that of a light tube reboiler; anti-scaling capacity of boiling sides of the heat exchange tubes is increased; the dirt deposition rate is less than that of a smooth tube, so that the cleaning period of the reboiler is prolonged.

The invention provides a chemical processing method of coal chemical industry recycled circulating cooling water. An agentia is composed of composite scale and corrosion inhibitor which is composed of 9-11 parts of polyepoxysuccinic acid, 18-22 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, 19-21 parts of methylene phosphonic acid, 25-35 parts of dirt dispersion agent, 1-3 parts of benzotriazole, and 9-18 parts of deionized water. First, adding polyepoxysuccinic acid into the 2-phosphonobutane-1,2,4-tricarboxylic acid, placing the polyepoxysuccinic acid and the 2-phosphonobutane-1,2,4-tricarboxylic acid in a container and evenly mixing, sequentially adding the methylene phosphonic acid, the dirt dispersion agent and the deionized water into the container, then stirring for 25-35 minutes, keeping the temperature at 20-35 DEG C, then adding the benzotriazole, continuously stirring for 30-60 minutes and keeping the temperature at 20-35 DEG C, and then, the composite scale and corrosion inhibitor is obtained. Dosage of the composite scale and corrosion inhibitor is 10mg/L, based on middle warmer strengthening water, total phosphorus of the circulating water is controlled to be 4-7mg/L, and a concentration ratio is controlled to be 5.0-6.0 times. The method further comprises sterilization and algae removing process and optimization of the circulating water.

The invention relates to a scale inhibitor which has a relatively good corrosion and scale inhibition effect and can effectively treat industrial high-mineral-ion wastewater. The scale inhibitor comprises a component A and a component B which are mixed with each other, wherein the component A is hydrolytic polymaleic anhydride (HPMA); the component B is copolymer synthesized by using itaconic acid (IA), 2-acrylamido-2-methyl propyl sulfonic acid (AMPS) and 2-2-acrylamido-2-methyl propyl phosphonic acid (AMPP); in a molecular formula of the copolymer, x, y and z represent mole numbers of IA, AMPS and AMPP respectively, and the ratio of x to y to z is (50.3-70.6) to (11-16) to (33-41); the mass part ratio of the component A to the component B is (4-6) to 1.

The invention belongs to the technical field of water treatment, and particularly discloses a non-phosphorus antisludging agent containing tracer polymer and a preparation method of the non-phosphorusantisludging agent. The antisludging agent is prepared from the following raw materials: (1) AA/AHPSE; (2) zinc chloride; (3) polyaspartic acid; (4) organic amine; (5) triethanolamine; (6) polyepoxysuccinic acid; (7) sodium gluconate; (8) hydrogen peroxide; (9) a tracer agent PTSA; and (10) the balance of pure water. The prepared non-phosphorus antisludging agent containing tracer polymer is a water treatment antisludging agent having the good effect, low cost, high antisludging capability, and capable of being monitoring adding and usage conveniently, and has oustanding social benefits andeconomic popularization value.

The invention provides a metal water-based rust removal antirust solution. The metal water-based rust removal antirust solution comprises raw materials including, by weight part, 2 to 6 parts of citric acid, 2 to 8 parts of lauryl sodium sulfate, 2 to 4 parts of tartaric acid, 1 to 5 parts of sodium citrate, 2 to 6 parts of polyaspartic acid, 0.4 to 1.2 parts of oxidized starch, 5 to 10 parts of cetyl-trimethyl ammonium bromide, 10 to 15 parts of polyoxyethylene fatty alcohol sodium sulfate, 1 to 2 parts of OP-10, 1 to 3 parts of chitosan, 2 to 8 parts of mesoporous silica, 10 to 20 parts of PEG200, 15 to 20 parts of propanediol butyl ether and 60 to 90 parts of water. The invention further provides a preparing method of the metal water-based rust removal antirust solution. The metal water-based rust removal antirust solution has multiple functions of rust removal, dirt removal, phosphatization, passivation and the like, a reaction is carried out at the normal temperature, the rust removal time is short, the antirust time is long, and corrosion to the metal is avoided.

The invention provides a preparation method of an efficient scale inhibitor for a circulating cooling water system, and relates to the field of scale inhibitors, and the preparation method specifically comprises the following steps: preparing an intermediate A; preparing an intermediate B; uniformly mixing and stirring the intermediate A, the intermediate B, a maleic acid-acrylic acid copolymer, inorganic salt and water to obtain a mixed solution; adding methylated-beta-cyclodextrin, and uniformly stirring so as to obtain the scale inhibitor. According to the efficient scale inhibitor preparedthrough the method, the scale inhibition rate of a static scale inhibition experiment reaches 90% or above, the optimal scale inhibition rate of the performance can reach 99.1%, the scale inhibitionrequirement of a circulating cooling water system can be met, and the efficient scale inhibitor has very wide application prospects.

The invention provides a metal oil removal agent. The agent comprises raw materials including, by weight part, 4 to 12 parts of potassium hydroxide, 10 to 20 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 5 to 10 parts of polyaspartic acid, 0.5 to 2 parts of oxidized starch, 10 to 20 parts of cetyl-trimethyl ammonium bromide, 15 to 25 parts of butyl cellosolve, and 4 to 10 parts of sodium pyrophosphate. The invention further provides a use method of the metal oil removal agent. Under the normal temperature state, the metal oil removal agent has the higher dissolving capacity on various kinds of grease, heavy oil and aging deteriorated grease can be dissolved, the cleaning speed is high, the higher dispersion and anti-staining capacity can be achieved, the stain removal capacity is high, oil dirt of workpiece cleaning can be prevented from reversely contaminating the metal surface, the raw material cost is reduced, the cleaning effect is improved, and the cleaning time isshortened.

The invention discloses a corrosion inhibitor for recirculated cooling water. The corrosion inhibitor comprises, by weight, 1.5-3% of molybdate, 3-8% of ethanolamine, 8-15% of polyhydric alcohol phosphate ester, 3-7% of dimethyl ketoxime, 1-2% of sodium gluconate, 1-2% of sodium salicylate and the balance deionized water. The corrosion inhibitor has the advantages of good high temperature resistance, high corrosion inhibition efficiency and good scale inhibition capability.

The invention discloses a scale inhibitor for an air conditioning circulating water system in a textile mill. The scale inhibitor is prepared by the following steps: taking three monomers, namely itaconic acid, sodium allysulfonate and hydroxyethyl methylacrylate, as raw materials, and synthesizing a terpolymer scale inhibitor containing sulfonic group, carboxylic group, hydroxyl and ester groupsby virtue of a free radical solution copolymerization reaction. The scale inhibitor disclosed by the invention solves the problems in the prior art that the scale inhibitor is low in scale inhibitionefficiency and complicated in preparation process. The invention further discloses a preparation method of the scale inhibitor for the air conditioning circulating water system in the textile mill.

The invention discloses a coal chemical industry grey water scale inhibitor, and belongs to the technical field of grey water scale inhibitors. The coal chemical industry grey water scale inhibitor comprises the following components by weight: 10-15 parts of water; 20-35 parts of polyamino polyether methylene phosphonic acid; 32-47 parts of an acrylic acid-2-acrylamide-2-methyl propanesulfonic acid copolymer; 17-28 parts of an acrylic acid-acrylate copolymer; 2-8 parts of a compounding agent; 1-3 parts of a stabilizer; and 2-5 parts of a passivation solution. The scale inhibitor of the invention has the advantages of being stable at high temperature, high in scale inhibition rate and good in corrosion inhibition.

The invention provides a scale inhibitor as well as a preparation method and an application thereof. A scale inhibition mechanism is based on chelation solubilization, dispersion, electrostatic repulsion and lattice distortion. Several medicament monomers are selected in a formula to be compounded and used, and the scale inhibition capability of the scale inhibitor is far higher than that of the medicament monomers by means of synergistic effect between the monomers; calcium carbonate scale and magnesium carbonate scale can be effectively prevented from being produced, wherein the inhibition rate of calcium carbonate scale is 89.3%-92.6%, the inhibition rate of magnesium carbonate scale is 92.1%-96.2%, organic scale can be effectively prevented from adhering to the pipe wall, so that the pipe wall is smooth, and circulation flux of a leachate is ensured; the pipe cleaning frequency of an existing anaerobic system can be reduced to once a year from once every two months; equipment suchas an anaerobic circulating pump, a denitrification water inlet pump and the like in contact with the leachate in a biochemical section in an anaerobic system can be protected, blockage of the equipment is prevented, and the service life of the equipment is prolonged; pipe bursting and other accidents caused by pipe fouling and blocking can be effectively prevented, and production can be performedcontinuously and stably.

The invention provides a cleaning rust remover. The cleaning rust remover comprises, by weight, 15-25 parts of 85wt% phosphoric acid, 8-12 parts of long-oil alkyd resin, 5-10 parts of sodium gluconate, 2-5 parts of triethanolamine, 2-8 parts of polyaspartic acid, 0.15-0.30 part of oxidized starch, 8-12 parts of trimethyl cetyl ammonium bromide, 60-80 parts of water, 8-15 parts of lauryl sodium sulfate and 5-12 parts of sodium tripolyphosphate. The invention further provides a preparation method of the cleaning rust remover. According to the cleaning rust remover, cleaning, phosphorous removal,rust removal, corrosion prevention and rust prevention of the surface of ferrous metal can be accomplished at the same time only by one procedure, and a plurality of procedures are reduced for ferrous metal surface treatment, so that the substrate of the ferrous metal surface is prevented from being excessively acidized.

The invention relates to a compound scale and corrosion inhibitor which comprises the following components in percentage by mass: 20% of organic phosphonic carboxylic acid, 10% of a phosphonate, 20% of a sulfonate copolymer, 10% of polymaleic acid, 5% of zinc chloride, 1% of a copper corrosion inhibitor and 34% of purified water. A processing method comprises the following steps: S1, adding purified water accounting for 20% of the total water consumption of the purified water into a batching tank, and starting stirring; S2, adding organic phosphonic carboxylic acid and the phosphonate, and continuously stirring for 15 minutes; S3, adding the sulfonate copolymer and the polymaleic acid, and continuously stirring for 10 minutes; S4, adding zinc chloride, and continuously stirring for 15 minutes; after dissolving zinc chloride, adding the copper corrosion inhibitor; S5, adding all the rest purified water into the batching tank, and continuously stirring for 30 minutes until all the raw materials are completely dissolved and uniformly mixed; S6, stopping stirring, and standing for 2 hours to obtain a finished product. The compound scale and corrosion inhibitor has the characteristics of high slow release rate, high temperature resistance, strong scale inhibition capability, difficult decomposition and the like, has good chelating dispersion and lattice distortion effects, and can alleviate corrosion to copper materials.