30results about How to "To achieve the purpose of anti-scaling" patented technology

The invention discloses an austenitic stainless steel cleaning and passivating agent. The austenitic stainless steel cleaning and passivating agent is composed of, by mass, 30%-40% of citric acid, 0.1%-1% of ethylene diamine tetraacetic acid disodium, 1%-5% of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), 3%-8% of glycollic acid, 3%-8% of phosphoric acid, 0.1%-2% of a non-ionic surface activeagent, 0.5%-3% of 322H, 0.5%-1% of sodium dodecylbenzenesulfonate, 0%-0.5% of yttrium nitrate, 0.1%-1% of corrosion inhibitor and the balance water. The prepared degreasing, rust removing and passivating agent has the characteristics of being environment-friendly, free of pungent smell and free of toxicity, harm to people and the environment can be remarkably reduced, and the production cost is effectively reduced.

The invention provides a reverse osmosis membrane scale inhibitor. The reverse osmosis membrane scale inhibitor mainly comprises organic phosphonic acid, organic carboxylic polymers, sulfonic copolymers, a quaternary phosphonium salt, and methane dithiocyanate. The invention further provides an application of the reverse osmosis membrane scale inhibitor in scale inhibition of a reverse osmosis system. When used for reverse osmosis water treatment, the reverse osmosis membrane scale inhibitor provided by the invention can effectively eliminate membrane pollution caused by deposition of CaCO3, CaSO4, SiO2 and silicate; working efficiency of the reverse osmosis system is improved, service lives of the reverse osmosis membrane and reverse osmosis equipment are prolonged, and reverse osmosis cost is reduced; the reverse osmosis membrane scale inhibitor is compatible with various common flocculating agents such as polyaluminum chloride and cationic polyacrylamide; and a pH value is not required to regulate.

The invention discloses a composite scale inhibitor for high-hardness water. The composite scale inhibitor for the high-hardness water is prepared by the following components: sodium carbonate, sodium hydroxide, sodium humate, lignosulfonate, sodium silicate and sodium aluminate. By the scale inhibitor, scaled substances can be changed into loose and high-mobility water slag and is settled along with the flocculation process, so the scale inhibition aim is fulfilled; and adsorption slime is changed on the aspect of properties, is loosened and softened and can be taken away by circulating water, so the pipeline and the spray head of the circulating water are difficult to block. The scale inhibitor can remove impurities and scaled substances from the circulating water in the settling process; the concentration multiple cannot be controlled during circulation; pollution discharge is avoided; and water resource is saved. The composite hardness-reducing inhibitor of the scale inhibitor is low in the price of each component, so the scale inhibitor is lower in cost compared with the common scale inhibitor in the current market, and the operation cost of the circulating water is reduced. The scale inhibitor can inhibit scale, can also effectively reduce the hardness of the water and control the alkalinity of the water, and is applicable to scale inhibition and turbid reduction of sewage circulating systems for smoke dust removal and smoke washing.

Provided is a reverse osmosis membrane scale inhibitor which comprises polylactic acid having a molecular weight of 1000 to 5000, organic phosphonic acid scale inhibitors and water. The components of the reverse osmosis membrane scale inhibitor are 5 to 15 wt% of polylactic acid and 5 to 80 wt% of organic phosphonic acid scale inhibitors, with the balance being water. The scale inhibitor is a transparent aqueous solution with a pH smaller than 6.0 and a solid content of 20 to 60%. Application concentration of the scale inhibitor is 1 to 100 mg/L; the scale inhibitor can simultaneously preventthe formation of positive colloid sediments like CaCO3, CaSO4, Ca3(PO4)2, BaSO4, SrSO4 and metal oxides, and is applicable under the occasion that a saturation index (LIS) is less than 6.0.

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 discloses a solid clothes laundering composition coated with a polymeric membrane. The composition is obtained by coating a solid washing material by using the polymeric membrane, wherein the polymeric membrane has the functions of anti-redeposition and calcium ion and magnesium ion coordination; the polymeric membrane comprises a dirt dispersion agent, an anti-redeposition agent and an auxiliary material; the washing material comprises an anionic surfactant, a nonionic surfactant, a cationic surfactant and a washing assistant. The solid clothes laundering composition is easily dispersed in the water during washing, the water source pollution can be reduced, the calcium ion and magnesium ion can be effectively coordinated, the hard water can be softened and the redeposition of the dirt can be prevented; besides, the solid clothes laundering composition is convenient to use, easy to quantify, simple in package and low in cost.

The invention provides a scaling inhibitor applied to industry cooling water systems. The scaling inhibitor is an aqueous solution of flake-like graphene oxide, the concentration of the scaling inhibitor ranges from 0.001 to 10g/L, and particle size ranges from 15 to 800nm. The invention also provides a preparation method of the scaling inhibitor; according to the preparation method, flake-like graphene oxide scaling inhibitor is added in cooling water, and the flake-like graphene oxide aqueous solution is obtained via magnetic stirring and ultrasonic dispersion. According to applications, the flake-like graphene oxide scaling inhibitor is added into industrial recycling cooling water, when the concentration of scale-forming ions in cooling water is relatively large, and scaling is caused, the surfaces of scale-forming particles (such as calcium carbonate) are coated by graphene oxide, the crystal type of scale-forming substances, such as calcium carbonate, is changed, and flocculent mild scale is formed, so that adhesion of the scale-forming substances, such as calcium carbonate, in water onto the metal surfaces of heat exchange equipment is not easily caused, the flocculent mild scale is removed via drainaging of the cooling water systems, and scaling inhibition is achieved.

The invention discloses a sewage treatment flocculant. The sewage treatment flocculant comprises the following raw materials in parts by weight: 105-115 parts of xylogen, 75-82 parts of propyl aldehyde, 26-29 parts of diethylenetriamine, 35-38 parts of sodium hydroxymethanesulfonate, 580-600 parts of isopropanol, 12-15 parts of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, 25-28 parts of polymeric aluminum ferric sulfate, 12-15 parts of alum, 23-26 parts of polymeric ferric chlorosulfate and 25-28 parts of polyacrylic acid. The invention further discloses a preparation method of the sewage treatment flocculant. The sewage treatment flocculant is applied to the treatment of heavy metal sewage, the flocculating performance is good, the removal effect of heavy metals is good, and the scaling can be prevented.

The invention discloses an efficient sewage treatment flocculant which comprises the following raw materials in parts by weight: 100-110 parts of lignin, 70-80 parts of propionaldehyde, 25-30 parts of triethylene tetramine, 32-35 parts of formaldehyde sodium bisulfite addition compound, 600-620 parts of normal propyl alcohol, 10-12 parts of glycidyl trimethyl ammonium chloride, 23-26 parts of poly-ferric aluminum sulfate, 25-28 parts of PPFC, 4-8 parts of aluminium chloride and 22-26 parts of sodium polystyrene sulfonate. The invention further discloses a preparation method of the efficient sewage treatment flocculant. The efficient sewage treatment flocculant obtained through the preparation method is excellent in flocculating performance and heavy metal removal effect and can prevent scaling.

The invention discloses a scale inhibitor of reverse osmosis membranes and relates to the field of chemical processes. The composition is prepared from polyepoxysuccinic acid, sodium polystyrene sulfonate, poly aspartic acid, polylactic acid, dimethyldistearylammonium bromide, benzisothiazolones and deionized water. The phosphate-free scale inhibitor of reverse osmosis membranes is capable of efficiently removing inorganic scales and colloid scales deposited on reverse osmosis membranes; in the formula, several phosphate-free or low-phosphate environment-friendly materials are used in combination, the use effect of the composite agent is greatly improved through the synergistic effect among the raw materials, and satisfactory comprehensive scale removing performance is achieved; meanwhile, by means of the phosphate-free formula and addition of a small amount of the green fungicide benzisothiazolones, the potential danger of biological pollution and bacterium standard exceeding of membrane systems can be relieved, and pollution to the environment water source is avoided.

The invention discloses a magnetoelectric circulating cooling water anti-scaling processor provided with a flow binding pipe. The processor is used for processing circulating cooling water in a laboratory. The invention provides the anti-scaling processor for circulating cooling water in a magnetoelectric laboratory. The anti-scaling processor comprises a metal pipeline enabling the circulating water flow to flow by, the flow binding pipe, an electric processing device for generating a high voltage electric field and a magnetic processing device for generating a pulse magnetic field. According to the processor disclosed by the invention, the high voltage electric field and a pulse magnetic field act on the circulating cooling water body in the laboratory, so that the experimental error problem caused by flow speed deceleration in an anti-scaling device pipeline resulting from the mismatch between the pipe diameter of a water pipe and the diameter of the anti-scaling device pipeline in the laboratory is solved, and meanwhile, the problem of simultaneously acting the electric field and the magnetic field on the circulating cooling water body is solved.

The invention discloses a super-molecular care agent, a heating circulating water zero discharge system and a use method. The super-molecular care agent comprises the components, by weight, of 7%-10% of sodium alkyl benzene sulfonate, 10%-12% of sodium polyacrylate, 5%-6% of dodecyl dimethyl benzyl ammonium chloride, 2%-2.5% of alkanolamide, 4.5%-6% of fatty alcohol-polyoxyethylene ether, 4%-5% of cyanoacetic acid, 1%-1.5% of benzotriazole, 2%-3% of sodium tripolyphosphate, 2%-2.5% of sodium silicate, 1%-1.5% of trisodium phosphate, 2%-3% of ethylene glycol, 1%-1.5% of pyridoxine hydrochloride, 2%-2.5% of disodium hydrogen phosphate and the balance of water. The super-molecular care agent is added to heating circulating water, scaling produced by the circulating water and the system corrosion degree are reduced, and the effect of reducing sewage discharge is realized.

The invention relates to a ceramic raw material degumming agent and a preparation method thereof, in particular to a ceramic raw material degumming agent capable of changing the mobility of a ceramicraw material and a preparation method thereof. When the degumming agent is added into ceramic raw material waste, because the degumming agent contains sodium polyacrylate, the degumming agent can be attached to the surface of mineral particles, so that the mineral particles do not rub each other, which causes no fluidity, and the friction is reduced so that the ceramic raw material with no flow rate is changed into the ceramic raw material with a flow rate, from an energy point of view, the surface energy of the mineral particles can be reduced, thereby reducing the grinding energy and improving the grinding efficiency. The sodium tripolyphosphate in the degumming agent can react with cations in the ceramic raw material to form an insoluble salt, thereby achieving the purpose of scale inhibition and simplifying the recycling of the ceramic raw material. The invention also provides a preparation method of the degumming agent, the method is simple and convenient to operate and greatly improves the production efficiency of the degumming agent.

The invention provides a multifunctional scale inhibitor capable of inhibiting multiple types of scale according to landfill leachate characteristics. The multifunctional scale inhibitor is characterized by being prepared from, by mass, 6%-29% of carboxylic acid polymer, 1%-35% of sulfonic acid copolymer, 3%-19% of compound containing five-element heterocyclic nitrogen and the balance water. The scale inhibitor is environmentally friendly and efficient, is effective for multiple types of salt scale such as phosphate scale, sulfate scale, magnesium hydroxide and calcium carbonate, especially has the good inhibiting effect on calcium phosphate, is obvious in effect and free of phosphorus and does not cause secondary pollution to a water body.

The invention relates to the field of filters, in particular to a waterway scale inhibition device and a scale inhibition method thereof. A filter comprises a shell, wherein the shell is provided witha water inlet and a water outlet, and the water inlet and the water outlet are communicated to form a flow passage; the filter also comprises a rotational flow device and a scale inhibition filter element assembly, wherein the scale inhibition filter element assembly is arranged in the flow passage, and the rotational flow device is arranged on a water flow passage between the scale inhibition filter element assembly and the water inlet and used for guiding feeding water flow in forming a rotational flow to enter the scale inhibition filter element assembly. The scale inhibition filter element assembly comprises a water-permeable chamber and a filter material, wherein the water-permeable chamber is filled with the filter material, and a space for the rotational flow to drive the filter material to move in the water-permeable chamber is reserved. Compared with the prior art, the waterway scale inhibition device has the advantages that the rotational flow is generated by the rotationalflow device, the rotational flow drives the filter material to roll, the contact area between the filter material and the water flow is increased, and the scale inhibition effect of the waterway scaleinhibition device is improved; moreover, the rotational flow device and the scale inhibition filter element assembly are fixedly arranged, so that the filter is unlikely to be damaged, and the service life of the filter is prolonged.

The invention relates to the technical field of forest protection in winter and spring, in particular to environment-friendly calcium hydroxide special for tree protection and a production method, and the environment-friendly calcium hydroxide is prepared from the following raw materials: ore, fire coal, an insecticide, a thermal insulation material, a dispersing agent I, a dispersing agent II, a dispersing agent III and water. The invention discloses a process and a technology for producing special tree spraying calcium hydroxide for protecting and whitening trees by utilizing low-grade limestone in combination with the characteristics and potential advantages of low-grade limestone mineral resources, lime rotary kiln calcination of companies. The problems that calcium hydroxide is poor in suspension property, materials and water are easy to separate, settle and block, spraying is uneven, the insecticidal effect is not ideal, heat preservation performance is poor, operation is complex and the like in the tree whitewashing process are solved, and spraying fluency and using performance of calcium hydroxide in the tree whitewashing process are improved. The standardization of the special calcium hydroxide for spraying trees in the aspects of production, quality assurance, detection and the like is realized.

The invention discloses a replaceable anti-scale device for an embedded bubbler. The replaceable anti-scale device comprises the bubbler, the bubbler comprises a hollow shell, the shell is of a multi-stage stepped cylindrical structure with the upper end larger than the lower end, a water outlet is formed in the center of the bottom end of the shell, and an annular groove is formed in the top endof the shell; a pressure reduction piece is sleeved with the annular groove, a water distribution piece is sleeved with the shell and arranged between the pressure reduction piece and the water outlet, a filter screen and an anti-scale silica gel filter screen are sequentially arranged above the shell, and a plurality of filter holes are formed in the filter screen and the anti-scale silica gel filter screen; and the replaceable anti-scale device for the embedded bubbler is simple in structure, convenient to disassemble, practical, durable, good in filtering effect and suitable for serving asa substitute product of an existing replaceable anti-scale device for the embedded bubbler.

The invention provides a closed scale-inhibiting and cooling system for wet production of acetylene from calcium carbide in order to solve a problem that heat release is obstructed by scales formed byCaCO3 generated from Ca(OH)2 and CO2 in a spray cooling tower. The system comprises an acetylene generator, a concentration tank, an electromagnetic cleaner, a bellows heat exchanger, a sedimentationtank, an air cooling tower and pumps. The system is characterized in that a bellows is arranged in the bellows heat exchanger; a pipeline among the concentration tank, the electromagnetic cleaner, the bellows heat exchanger and the sedimentation tank is not in contact with air, and forms a closed system, so the generation amount of CaCO3 is reduced; the heat of the system is indirectly released to the outside of the system by a loop formed by the bellows heat exchanger and the air cooling tower; and the arranged electromagnetic cleaner can increase the solubility of scale forming materials inwater in order to achieve the purpose of scale inhibition. The system makes the production of a technology for wet production of acetylene from calcium carbide stable, and reduces the operating costof enterprises.

The invention discloses a nanometer scale inhibitor. The nanometer scale inhibitor is an aqueous solution of nanometer Al2O3 particles with a particle size ranging from 10 to 800nm. In the nanometer scale inhibitor, the concentration of nanometer Al2O3 ranges from 0.0005 to 5g/L; the nanometer scale inhibitor also comprises a dispersant; the mass concentration of the dispersant in the aqueous solution of the nanometer scale inhibitor ranges from 0 to 2%. The invention also discloses a preparation method of the nanometer scale inhibitor. According to the preparation method, the nanometer Al2O3 particles and the dispersant are added into deionized water; magnetic stirring and ultrasonic oscillation are adopted so as to disperse the nanometer Al2O3 particles in water uniformly and obtain the nanometer Al2O3 scale inhibitor. In applications, the nanometer Al2O3 scale inhibitor is added into cooling water, when the concentration of scale-forming ions in the cooling water is too high, and scale formation is induced, the nanometer Al2O3 particles are capable of influencing scale formation process, inducing lattice distortion of inorganic scale such as calcium carbonate, and reducing adhesive force of inorganic scale crystals with metal, so that adhesion of the scale-forming substances in cooling water onto the metal surfaces of heat exchange equipment is not easily caused.