34results about How to "Good anti-scaling and dispersing effect" patented technology

The invention provides a dirt dispersion agent which is a copolymer of acrylic acid, acrylamide and organic compounds with sulfonic acid groups, the mass ratio of which is 5-40 to 1-15 to 1-15 and a preparation method thereof. The copolymer has the solid content of 30-40 percent and the molecular weight of 1000-10000; the organic compounds with sulfonic acid groups are vinyl sulfonic acid, 2-acrylamido-2-methyl-1- propane sulfonate, sodium allylsulfonate or 2-acrylamide dodecyl sulfonate. The dirt dispersion agent of the invention also comprises amido, carboxyl and sulfonate functional groups, thus leading the agent to have good function of inhibiting calcium carbonate scale as well as good performance of dispersing ferric oxide. The dirt dispersion agent still has high performance of dirt dispersion even in water with inorganic salt of high concentration and can be widely applied to a treatment system of industrial water, such as industrial circulating water and reverse osmosis water, etc.

The invention discloses a coal gasification black gray water self-adaptive reducing hardness type gray water scale inhibitor dispersant and its application, including the following content: by optimizing the type, group, structure and molecular weight of the gray water scale inhibitor dispersant, the corresponding pH is controlled range, so that the hardness-reducing gray water scale inhibitor dispersant plays the role of scale inhibition and dispersion in the gray water section, plays the role of crystal nucleus and coagulation aid in the flash evaporation and black water clarification section, and effectively reduces the hardness of the gray water system , so that the gray water system can operate well under the existing scale-inhibiting dispersion-crystal mud sedimentation system, no need to configure additional hardness removal devices, reduce the complexity of the design of the gray water system, and reduce the investment and operating costs of enterprises .

The invention relates to a phosphorus-free copolymer scale inhibiting dispersant and a preparation method thereof. The scale inhibiting dispersant is prepared through the one-step polymerization of 10-20wt% of allyl sulfonic acid, 10-20wt% of acrylate and 60-80wt% of maleic acid and / or itaconic acid in an aqueous solution in a manner of being initiated by inorganic peroxide. The invention further discloses a method for preparing the copolymer scale inhibiting dispersant. According to the copolymer scale inhibiting dispersant prepared by the method, the molecular structure simultaneously contains a plurality of functional groups; in case of lower dosing concentration, better calcium carbonate scale and calcium phosphate scale inhibiting performance and zinc salt stabilizing performance can be obtained, and the ferric oxide dispersity is also better. The copolymer scale inhibiting dispersant is simple in preparation method, low in cost, low in dosage and good in scale inhibiting dispersion effect, does not contain phosphorus, is environmental-friendly, can be widely applied to an industrial circulating cooling water system, and has relatively high economic and social benefits.

The invention relates to a non-phosphorus copolymer antiscale dispersant which is prepared by carrying out one-step polymerization on 5-15% of C16-C24 unsaturated fatty acid and 85-95% of C3-C8 unsaturated carboxylic acid in an organic solvent under the initiation action of inorganic peroxide. The invention also discloses a preparation method of the copolymer antiscale dispersant. The molecular structure of the copolymer antiscale dispersant contains carboxyl groups and long carbon chains; and thus, the copolymer antiscale dispersant has certain surface activity and stripping property on the premise of having favorable calcium carbonate scale inhibition property and dispersibility, and especially has better antiscale effect than common antiscale dispersants in a water body with higher oil content. The copolymer antiscale dispersant has the advantages of simple preparation method, low cost, low consumption and favorable antiscale and dispersion effects, is free of phosphorus, is green and environment-friendly, can be widely used in an industrial circulating cooling water system, and has higher economic benefit and social benefit.

The invention relates to a brine-refined scale inhibitor and dispersant, a preparation method and application thereof. The brine-refined scale inhibitor and dispersant is mainly prepared from the following raw materials in mass percentage: itaconic acid-acrylic acid copolymer solution 20%-60% %; maleic anhydride-acrylic acid copolymer solution 5%-30%; polyaspartic acid solution 5%-20%; polyepoxysuccinic acid solution 5%-20%; stabilizer 0.5%-2%; water 5 %~25%; the present invention selects itaconic acid-acrylic acid copolymer solution, maleic anhydride-acrylic acid copolymer solution, polyaspartic acid solution, polyepoxysuccinic acid solution and stabilizer, water as scale inhibitor and dispersant raw materials, and screen the proportion of each component, which can be used for CaSO produced in the process of refining and separating calcium, magnesium and sulfate ions from brine. 4 , CaCO 3 and other substances play an excellent scale inhibition and dispersion effect, effectively preventing CaSO 4 , CaCO 3 Crystals naturally form on the surface of equipment pipes to form scale.

The invention relates to a complexing agent. The complexing agent comprises the following components in percentage by weight: 1 to 35 percent of scale inhibitor, 1 to 35 percent of organic phosphinocarboxylic acid or organic phosphinosulfonic acid, 1 to 25 percent of acrylic acid copolymer and 30 to 80 percent of water. The complexing agent is environment-friendly, has low phosphorus content, is particularly suitable for treating cooling water under the conditions of high alkalinity, high salt content, high hardness, a high pH value and high temperature, and can effectively solve the problem of scale formation of a steel slag hot closed circulating water system.

The invention relates to a textile hydrogen peroxide bleaching stabilizer, comprising the following components: chelating agent, surfactant, magnesium inorganic salt, sodium silicate, scale inhibitionand dispersion agent and water. The scale inhibition and dispersion agent is polyepoxysuccinic acid or sodium salt thereof and has good scale inhibiting dispersing property to silicon so that silicate scale can not deposit and adhere to the surface of fabric; the bleached product has ideal whiteness and no harsh and hard handfeel and can not pollute the inner wall of mechanical equipments.

This invention provides a butenoic acid-propenal-acroleic propyl ester polymer and method for making same. This polymer has a superior absorption and stability performance to metallic oxide which can easily form colloid in water, and can disperse the metallic oxide in reverse osmosis concentrated water. Meanwhile, this invention also provides a reverse osmosis membrane protecting agent comprising the said polymer and uses thereof. This protecting agent comprises: 2-phosphonic butane-1,2,4-tricabroxylic acid 10-30 share, butenoic acid-propenal-acroleic propyl ester polymer 30-60 share, polyaspartic acid 10-40 share, water 10-20 share. This protecting agent is characterized of superior absorption, stabilization and stabilization to colloidal pollutant, low phosphorus content, low commissioning amount and high antisludging rate in the reverse osmosis system.