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

The invention relates to an alkyl ether carboxylate type dirt dispersion agent. The dirt dispersion agent contains carboxyl and ether group functional groups. The invention aims to provide an application of the dirt dispersion agent disclosed by the invention to an industrial water treatment system, particularly a circulating cooling water system. The invention aims to provide an application method of the dirt dispersion agent disclosed by the invention; when being used, the dirt dispersion agent can be used separately and can also be compounded with other dirt dispersion agents or corrosion inhibitors to be used. According to the alkyl ether carboxylate type dirt dispersion agent, the alkyl ether carboxylate has very high tolerance on calcium and has a good dirt dispersion effect on difficultly-dissolved salts including calcium carbonate dirt, calcium sulfate dirt, calcium phosphate dirt and the like in the water under the conditions of high hardness, high alkali, high temperature and high pH (Potential of Hydrogen); and the alkyl ether carboxylate type dirt dispersion agent has the advantages of safety in use, low toxicity, easiness for biological degradation and environmental friendliness, is applicable to automatic medicine adding control, and is convenient to use, and so on.

The invention provides a highly effective anti-scaling disperser, which comprises sodium lignosulfonate, tannic acid, sodium humate and water. The disperser can be compounded with zinc chloride to 8-12%, and the formulation of the invention can be charged by zinc salts for the treatment of low-medium hardness water, and to increase the inhibition rate of the formulation.

The invention discloses an addition technology of a zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent, and belongs to the technical field of gasification water treatment. A formula and an addition technology of a scale inhibition and dispersion agent are improved, a low-phosphorus dispersion agent is added at a high-temperature part, a zero-phosphorus dispersion agent is added at a low-temperature part, and the low-phosphorus dispersion agent and the zero-phosphorus dispersion agent are combined and added at different sections, so that the content of phosphorus elements in externally discharged waste water of gasification enterprises is greatly reduced, the discharged waste water reaches the first-level industrial water discharge standard of China, environment-friendly discharge is realized, and besides, good grey waste scale inhibition and dispersion effects are achieved.

The invention discloses a novel reverse-osmosis scale inhibitor which comprises the following raw materials in parts by weight: 2-8 parts of sodium citrate, 33-45 parts of hydrolytic polymaleic anhydride, 28-37 parts of polyepoxysuccinic acid salt, 9-15 parts of urotropine, 13-20 parts of polylactic acid, and 40-50 parts of water. A preparation method comprises the following steps: adding sodium citrate, hydrolytic polymaleic anhydride, polyepoxysuccinic acid salt, urotropine and half of water into a reaction kettle, heating to 40-50 DEG C, and stirring for uniformly dissolving; dissolving polylactic acid with the rest water to obtain a polylactic acid solution; heating the materials in the reaction kettle to 70-75 DEG C, dropwise adding the polylactic acid solution, and keeping the temperature for 3-4h after the dropwise adding is finished; and cooling to room temperature so as to obtain the novel reverse-osmosis scale inhibitor. The novel reverse-osmosis scale inhibitor disclosed by the invention has the scale inhibition rate being up to 95%, is small in adding amount, environmentally friendly, stable in property, and long in storage period, and can be used for solving the problems that existing reverse-osmosis inhibitors mainly are foreign products and are limited in treatment capacity, complex in synthesis, relatively high in production cost, and the like in the prior art.

The invention provides a composite anti-scaling disperser, which comprises acroleic acid-acrylate-petroleum sulfonate copolymer, silicate, 1-hydroxyethylidene-1,1-diphosphonic acid, gluconic acid, benzotrizaole and water, the invention also provides the use of the composite anti-scaling disperser in industrial water treatment systems. The disperser can be compounded with zinc chloride to 8-12%, and the formulation of the invention can be charged by zinc salts for the treatment of low-medium hardness water, and to increase the inhibition rate of the formulation.

The invention discloses an environmentally-friendly scale and corrosion inhibitor and a preparation method thereof. The environmentally-friendly scale and corrosion inhibitor comprises the following ingredients in parts by weight relative to the total mass of scale and corrosion inhibitor: 10-15% of hydrolytic polymaleic anhydride, 14-20% of acrylic acid/2-acrylamide-2-methyl propanesulfonic acid/n-tert-butyl acrylamide terpolymer, 0.5-1% of ammonium persulfate, 5-10% of carboxyalkylthiosuccinic acid, 5-8% of sodium gluconate, 1-2% of methylbenzotriazole and the balance of deionized water. The scale and corrosion inhibitor has the advantages of no phosphorus or zinc, environment protection and excellent scale and corrosion inhibition effect.

The invention provides an anti-scaling disperser for water treatment systems, which comprises methyl methacrylate, diacyl hydroperoxide, acrylic acid-2-hydroxypropyl acrylate-AMPS copolymer, maleic anhydride-acrylic acid copolymer, zinc chloride and water, the disperser is fire resistant, it is a stramineus or colorless transparent liquid soluble with water, it possesses the capability of dispersing hydroxide of Fe and Zn, and calcium phosphate in alkaline water solutions, and because the disperser has sulfonic groups, so it has good anti-scaling and dispersing action to calcium carbonate.

The invention discloses a dirt dispersion agent for an ultra-high-rate operation. The dirt dispersion agent comprises the following components in percentage by mass: 20-40% of polyamino polyether methylene phosphonates, 5-15% of amino trimethylene phosphonic acid, 5-20% of polymaleic anhydride, 2-20% of a zinc salt and 5-25% of poly(acrylic acid-co-hydroxypropyl acrylate). The dirt dispersion agent disclosed by the invention has an excellent dirt dispersion effect.

The invention discloses a preparation method of an environment-friendly corrosion and scale inhibitor for industrial circulating water. The environment-friendly corrosion and scale inhibitor is prepared from raw materials as follows: double distilled water, urea, a deoxidant, ammonium hydrogen phosphate, ethanol amine, diethylenetriamine, sodium polyacrylate, polyacrylamide, red mud, sulfuric acid, trichlorophenol, polyepoxysuccinic acid, HPAA (hydroxyphosphonoacetic acid),acrylic ester and succinic anhydride; the corrosion and scale inhibitor has good scale inhibiting and dispersion effects at the temperature of 150-170 DEG C; the BOD removal rate is 90%-98%, the calcium carbonate scale inhibiting rate is 99.2%-99.6%, the phosphorus removal rate is up to 99.5%-99.9%, the paraffin controlrate is 88%-92%, the rate of corrosion to carbon steel is 0.0018-0.0022 mm/a, the COD removal rate is 84%-94%, the calcium carbonate scale inhibiting rate is up to 99%-99.6%, the strontium sulfate scale inhibiting rate is 99.2%-99.6%, and the rate of corrosion inhibition to carbon steel is 89%-97%.

The invention relates to a phosphorus-free environmentally-friendly type imidazoline corrosion and scale inhibitor and a preparation method thereof. The phosphorus-free environmentally-friendly type imidazoline corrosion and scale inhibitor is prepared from, by weight, 30-40% of water-soluble imidazoline, 4-6% of nonionic terpolymer, 15-20% of sodium gluconate, 1-3% of dissolvable zinc salt, 0.5-1.5% of sodium tetraborate, 0.5-1.5% of sodium bromide and the rest distilled water. According to the phosphorus-free environmentally-friendly type imidazoline corrosion and scale inhibitor, the annualcorrosion rate is lower than 0.0500 mm/a, the scale inhibition rate reaches 98% or above, and the good scale and corrosion inhibition effects are achieved.

The invention discloses a biological dispersing agent for circulating cooling water. The biological dispersing agent is prepared from, by weight, 30-60 parts of sodium styrenesulfonate-acryloylmorpholine polymer and/or propylene alcohol-acryloylmorpholine polymer, 10-30 parts of polyaspartic acid, and 1-10 parts of polyoxyethylene ether surfactants. The obtained biological dispersing agent for circulating the cooling water greatly enhances the penetrating capacity of organic matter, and the dispersing capacity of inorganic foulant and organic matter sedimentation; the penetrability of bactericide to biological sludge is improved; the bactericidal effect is improved, so as to optimize the removal effect on the tube wall microorganism and biological sludge. In addition, the biological dispersing agent has a mutual compatibility with scale and corrosion inhibitor and other water treatment agents used in circulating cooling water, and can facilitate the other water treatment agents to play the functions. The biological dispersing agent has the advantages of being simple in preparation method; being safe and environment-friendly; being biodegradable; having wide application prospect.

The invention relates to a brine refining scale inhibition and dispersion agent as well as a preparation method and application thereof. The brine refining scale inhibition and dispersion agent is mainly prepared from the following raw materials in percentage by mass: 20-60% of an itaconic acid-acrylic acid copolymer solution; 5%-30% of a maleic anhydride-acrylic acid copolymer solution; 5%-20% ofa polyaspartic acid solution; 5%-20% of a polyepoxysuccinic acid solution; 0.5%-2% of a stabilizer; and 5%-25% of water; the preparation method comprises the following steps: selecting an itaconic acid-acrylic acid copolymer solution, a maleic anhydride-acrylic acid copolymer solution, a polyaspartic acid solution, a polyepoxysuccinic acid solution, a stabilizer and water as raw materials of thescale inhibition and dispersion agent; and screening the proportions of all the components, so that excellent scale inhibition and dispersion effects can be achieved on substances such as CaSO4 and CaCO3 generated in the process of refining and separating calcium, magnesium and sulfate ions from brine, and CaSO4 and CaCO3 crystals are effectively prevented from naturally forming on the surface ofan equipment pipeline to form scales.

The invention discloses an efficient scale inhibitor for a membrane. The efficient scale inhibitor for the membrane is composed of the following components in percentages by mass: 2-10% of an acrylic acid-acrylamido-2-methyl propanesulfonic acid copolymer, 5-10% of 1-hydroxyl ethylidene-1,1-diphosphonic acid, 5-25% of polyepoxysuccinic acid, 1-5% of isothiazolinone and 60-85% of water. By employing the efficient scale inhibitor for the membrane, provided by the invention, the service life of a membrane system at least can be kept for more than three years; the salt removal rate of the membrane system is kept at over 90%; and the UF cleaning number of times can be reduced to 4-5/year, the cleaning number of times for RO and NF membranes can be reduced to 1-2/year, the water consumption for cleaning every year is about 1250m<3>-1900m<3>, and the cleaning water amount can be reduced by 55-70%. The efficient scale inhibitor for the membrane has remarkable environmental and social benefits.

The invention discloses a high-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and a preparation method of the scale inhibition and dispersion agent. The scale inhibition and dispersion agent comprises the following components in percentage by mass: 20-40% of polyamino polyether methylene phosphonic acid, 5-15% of amino acid methylene phosphonic acid, 5-20% of polymaleic anhydride and 5-25% of an acrylic acid-hydroxypropyl acrylate copolymer. Starting from complementation of the effects of chelating, dispersing and the like of a single agent on calcium and magnesium ions, the scale inhibition and dispersion agent can be widely applied to the fields of reverse osmosis inflow, circulating cooling water, seawater desalination and the like, and has good scale inhibition and dispersion effects; after the scale inhibition and dispersion agent with a concentration of 10 g/L is added, the TDS content of the reverse osmosis inflow can reach 60000 mg/L when the addition amount of the composition is 10mg/L, and calcium tolerance in water can reach 2000 mg/L; and the scale inhibition and dispersion agent can be degraded in a natural environment.

The invention relates to a preparation method of a scale inhibition dispersant for sewage treatment. The raw materials include: UP water, water glass, an oxidant, ammonium tungstate, thiourea, ammonium ceric nitrate, coal gangue powder, sepiolite, rectorite, attapulgite clay, sodium benzoate, ethylenediamine, ethylenediamine, binary acid and chlorine dioxide. The scale inhibition dispersant can reach a fluorine removal rate of 98-99.2% on fluorine-containing industrial wastewater, and a decolorization rate of 93-97%, has a chromium ion removal rate up to 99.5-99.9%, a calcium carbonate scale inhibition rate of 98-99%, a phosphorus elution rate up to 99.4-99.8%, and a wax inhibition rate of 82-87%, can effectively resist the erosion of 1300-1700mg/L chlorine ions to metals, and can reach acalcium carbonate scale inhibition rate up to 99-99.6%, a strontium sulfate scale inhibition rate up to 99.2-99.6%, a magnesium hydroxide and calcium sulfate scale inhibition rate up to 99.4-99.8%, and a carbon steel corrosion inhibition rate of 89-97%.

The invention discloses a coal gasification grey water dispersing agent and a preparation method thereof, the coal gasification grey water dispersing agent comprises 5%-15% of phosphoric acid tricarboxylic acid butane, 5%-15% of polymaleic anhydride, 5%-15% of acrylic acid-acrylamide sulfonate biopolymer and tap water, and the preparation method comprises the steps of material picking, feeding, standing and filtering. According to the present invention, the high-temperature scale inhibition dispersion effect is excellent, the scale inhibition dispersion rate of more than 80% at the high temperature of more than 200 DEG C is still maintained, the scale inhibition dispersion agent has been applied to a variety of gasification furnaces such as coal water slurry gasification, pulverized coal gasification and the like, can be used for a long enough period, can not be stopped for more than 6 months, and can ensure the continuous and stable operation of the device.