40results about How to "Reduce the concentration of chloride ions" patented technology

The invention discloses a method for hydrolyzing dimethyl dichlorosilane with concentrated acid. The method comprises the following steps: mixing the dimethyl dichlorosilane with hydrochloric acid to carry out hydrolytic reaction; mixing the obtained reaction liquid with a solvent; finally, performing separating operation on the obtained mixed solution to obtain hydrolysis product and hydrogen chloride gas. Through the adoption of the method, the content of cyclic polysiloxane in hydrolysate obtained from the dimethyl dichlorosilane through the concentrated acid hydrolyzing method is effectively increased; the design is reasonable, hydrolysate with low chlorine ion content can be obtained in no need of multi-stage phase separation procedures, and the hydrochloric acid and solvent obtained after separation can be recycled, so that the resource use ratio is improved, and the production cost is saved.

The invention mainly belongs to the technical field of a treating method for high temperature flue gas and a device thereof and specifically relates to a method and a device for removing dioxin from high-temperature flue gas. The method comprises the following steps: firstly, recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling, removing the dust for the second time, entering into a photo-decomposing purifying tower for decomposing dioxin and then emitting. The resynthesis of dioxin is restrained in the manner of recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling and the ultraviolet ray is utilized to catalytically decompose dioxin, so that the simple and efficient removal of the dioxin in the high-temperature flue gas is realized. The method and the device for removing the dioxin according to the invention have the characteristics of simplicity, high efficiency, and the like, and are easy for industrial application.

The invention relates to a magnesium desulfurization byproduct recovery process, and provides a magnesium desulfurization byproduct recovery method. The method comprises the following steps: (1) carrying out oxidation in a desulfurization tower: introducing air to the desulfurization tower air and stirring, such that magnesium sulfite in a slurry is completely oxidized into magnesium sulfate; (2) increasing magnesium sulfate concentration in the desulfurization tower: controlling a water supply amount and a slurry discharge amount of the desulfurization tower, and adopting heat of flue gas in the desulfurization tower to carry out concentration on the desulfurized slurry so as to increase the magnesium sulfate concentration in the slurry to 30-35 wt%; (3) removing impurities: conveying the slurry from the step (2) to an expansion drum type filter to remove impurities; and (4) carrying out evaporation crystallization: conveying the filtrate from the step (3) into a two effect falling film evaporator to carry out evaporation crystallization to obtain a magnesium sulfate heptahydrate crystal.

The invention provides a coral reef sand strengthened material and a using method thereof. The coral reef sand strengthened material consists of 100 parts of water, 1 part of polyacrylamide, 20-25 parts of water-soluble thermosetting glue, 5-10 parts of a polyvinyl acetate emulsion and 50-100 parts of cement, wherein the water-soluble thermosetting glue can be one selected from phenolic resin or acrylic resin. The manufacturing method and using method of the material are simple, the preparation raw materials are easy to obtain, the cost of strengthening treatment on coral reef sand is low, andthe material is convenient to use in islands and coastal areas. Through the adoption of the strengthened coral reef sand, the strength of cement mortar or concrete prepared by the coral reef sand isobviously improved, and chloride ions contained in the coral reef sand can be effectively prevented from diffusing to the outside, so that the corrosion probability of steel bars in coral reef sand concrete is reduced, and meanwhile, the fluidity of the mortar or the concrete prepared by the coral reef sand is also improved.

The invention discloses a preparation method of a multifunctional reinforced concrete corrosion inhibitor and relates to a reinforced concrete corrosion inhibitor. The preparation method comprises the steps that 1, layered double hydroxide is used as a precursor to perform calcination; 2, a calcination product obtained through the step 1 is arranged in a sodium hydroxide solution, and stirring, filtration and washing are performed to obtain a filtration product 1; 3, the filtration product 1 is arranged in a potassium hydrogen phthalate solution, and stirring, filtration and washing are performed to obtain a filtration product 2; 4, the filtration product 2 is dried and then is grinded into powder, namely the multifunctional reinforced concrete corrosion inhibitor is obtained. A modification and calcination reforming method is utilized to load various corrosion inhibitor ions in a layered structure of the double hydroxide so as to obtain the multifunctional reinforced concrete corrosion inhibitor, the multifunctional reinforced concrete corrosion inhibitor is used in a concrete structure, can simultaneously reduce the chloride ion concentration in concrete, release the corrosion inhibitor ions, keep the high pH value of the concrete and improve the concrete compactness, has excellent comprehensive anti-corrosion performance for the reinforced concrete structure and can provide multiple effective protection for steel bars embedded in the concrete.

The invention discloses a method for recycling and deeply treating heat of oxygen-rich wet oxidation heat of glyphosate mother liquor, and belongs to the technical field of chemical engineering. The method comprises the following process steps: producing by using a glycine method and an iminodiacetic acid method so as to obtain glyphosate and glyphosate mother liquor; concentrating the glyphosate mother liquor; mixing the concentrated glyphosate mother liquor, compressed air and liquid oxygen, sequentially feeding into a first-stage preheater, a second-stage preheater, a first-stage reactor, a waste heat boiler and a second-stage reactor for treatment, sequentially feeding back an oxidized liquid obtained from the second-stage reactor to the waste heat boiler, the second-stage preheater and the first-stage preheater for heat exchange, cooling to crystallize the oxidized liquid after heat exchange so as to obtain a phosphate product, and concentrating the crystallized oxidized liquid so as to obtain a concentrated liquid and a penetrate liquid; concentrating the penetrate liquid so as to obtain a sodium chloride product, and recycling the distillated liquid as a recycled liquid to be used in a glyphosate production process; performing hydrogen peroxide photo-catalytic oxidation reaction on the concentrated liquid. By adopting the method, the production cost is lowered, and the reaction efficiency is improved.

The invention discloses a method for removing chlorine in a copper sulfate solution by copper refining slag. The method for removing the chlorine in the copper sulfate solution by the copper refining slag comprises the following steps that the copper refining slag is smashed, ball-milled to a certain particle size, and then added into the copper sulfate solution containing the chlorine; and sub copper and chlorine ions in the copper refining slag are formed into cuprous chloride which is insoluble in acid, and after the cuprous chloride is filtered by a plate-and-frame press filter, a low chloride copper sulfate solution is obtained. The method can be widely used for removing the chlorine ions of all kinds of concentrations in the copper sulfate solution, the steps are easy, and operation is simple and convenient; the sources of antichlor are wide, production cost is low, secondary pollution is not generated in the whole production process, and chlorine removing slag can be returned to conduct fire melting to extract copper.

The invention discloses a novel method for reducing chloride ion concentration in an acid copper plating solution. The method comprises the following steps: adding copper powder in the acid copper plating solution to react for 10-20 min, and filtering to remove a sediment. According to the novel method for reducing the chloride ion concentration in the acid copper plating solution, Cu<2+> ions and chloride ions in the plating solution are simultaneously reacted with copper powder to generate the cuprous chloride sediment, so as to realize the purpose of reducing chloride ions. The method is better in chloride ion treatment effect, and high in reaction rate; through the method, the reaction can be completed within 10 min; the removal rate of the chloride ions is high; zinc impurities cannot be generated in the plating solution; compared with traditional methods, the method has significant advantages.

The invention discloses an electrolyte solution, electrolytic copper foil and manufacturing method thereof. The electrolyte solution is used for manufacturing the electrolyte copper foil, and containscopper ions of 50 to 90 g/L, sulfuric acid of 50 to 120 g/L and Cl ions of a concentration of not higher than 1.5 ppm. The electrolytic copper foil manufactured after the abovementioned electrolyte solution is electrolyzed has ten-point average roughness of not higher than 2 [mu]m on a surface at one side which is in contact with the electrolyte solution, the electrolytic copper foil has an elongation difference value generated through thermal treatment, and the elongation difference value is negatively correlated with an initial grain size of the electrolytic copper foil. The electrolytic copper foil provided by the invention has low roughness and special mechanical property, and can be applied to an electrical assembly.

The invention provides an improved method for cultivating halophilic microorganisms. According to the method, NaCl which is conventionally used for providing a high-salt environment for the halophilicmicroorganisms is completely or partially replaced by other sodium salts, and therefore the chloride ion concentration in the fermentation system can be reduced, so that corrosion of chloride ions inthe fermentation system to a fermentation device is reduced, subsequent wastewater treatment is facilitated, and microbial contamination during open fermentation is reduced; and the invention also relates to a culture medium for the cultivation.

The invention discloses a device and a method for performing construction by taking marine sand as concrete fine aggregates. The device comprises a direct-current power supply and a template (1), wherein a sliding groove is formed in the inner surface of the template (1); a stainless steel plate (3) is arranged at the bottom of the sliding groove; a drawer plate is arranged in the sliding groove in a sliding-fit manner; a conductive net (11) is embedded in the inner side of a steel reinforcement cage (8) of a concrete structure (6); a positive electrode of the direct-current power supply is connected with the stainless steel plate (3) through a lead wire; and a negative electrode of the direct-current power supply is connected with the conductive net (11). The method comprises the following key steps: pouring and tamping the concrete aggregates; in 2-4 days, pulling out the drawer plate and sealing an opening of the sliding groove with a seal strip (5), so that the surface of the concrete structure (6), the seal strip (5) and the sliding groove form a sealed chamber; and filling the chamber with an electrolyte solution (7), so that chlorine ions in the concrete structure (6) are migrated to the electrolyte solution (7). According to the device and method, the chlorine ion concentration of the marine sand can be effectively reduced.

The invention provides a preparation method of a novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The preparation method comprises the following steps: firstly, modifying melamine into a melamine monomer containing hydroxymethyl and phosphate groups by utilizing amino groups on melamine; and carrying out intramolecular dehydration on melamine molecules containing hydroxymethyl and phosphate groups to obtain the straight-chain melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The melamine is used for preparing the migratory steel bar corrosion inhibitor, and the molecular configuration and molecular weight of the steel bar corrosion inhibitor can be adjusted to meet the requirements of different ocean engineering. The application field of melamine monomers is widened, and the production cost of the migratory steel bar corrosion inhibitor is reduced. Meanwhile, the problems that the process for preparing the steel bar corrosion inhibitor from imidazole, pyrimidine, pyridine, five-membered and six-membered heterocyclic chemicals is complex, and highly toxic waste gas is generated in the productionprocess are solved. The prepared migratory corrosion inhibitor has a good corrosion inhibition effect on reinforcing steel bars, realizes the high performance of the reinforcing steel bar corrosion inhibitor, and has a wide application prospect.

The invention relates to a diuretic active drug cell screening model, and an establishing method and application thereof. The method comprises the steps: (1), culture of MDCK cells; (2), preparation of drugs; (3), screening of NaCl transport concentration; (4), grouping, drug administration and NaCl transport experiment; and (5), statistical analysis. According to the method in the invention, diuretic active drugs are screened through a model for simulating sodium chloride transport by renal tubular cells is adopted; furthermore, the fact that it is effective can be proved in a pyrrosia linguaextraction monomer diuretic active screening experiment; and the model is a relatively rapid cell model diuretic drug screening model.

The invention relates to a potassium chloride acidic galvanizing electroplating solution. The potassium chloride acidic galvanizing electroplating solution contains 120 to 150 g/L of KCl, 30 to 40 g/Lof ZnCl2, 25 to 30 g/L of H3BO3, 0.1 to 0.5 mL/L of a brightening agent, 20 to 30 mL/L of a softening agent and 6 to 12 mL/L of an auxiliary agent; in the brightening agent, Guerbet alcohol polyoxyethylene ether halogenated propanesulfonate accounts for 20 wt.%-30 wt.%, and benzalacetone accounts for 10 wt.%-25 wt.%; and the softening agent contains 5 wt.%-10 wt.% of 2,2', 4'-trihydroxy chalcone,10 wt.%-20 wt.% of beta-naphthol polyether sulfonate, 1 wt.%-3 wt.% of nicotinoylurea derivatives, 5 wt.%-10 wt.% of EN 16-80 and 1 wt.%-3 wt.% of sodium benzoate. According to the potassium chlorideacidic galvanizing electroplating solution, the concentrations of main salt and conducting salt in the electroplating solution are greatly reduced, the concentration of chloride ions in wastewater isgreatly reduced, the characteristics of high current efficiency, wide current density range, fine crystallization, excellent dispersion and the like of a traditional potassium salt galvanizing process can still be kept, and excellent leveling and moving performance is shown; and the electroplating solution has the advantages of being low in consumption of the main salt and the conductive salt, saving raw material cost, preventing bath voltage from being increased during electroplating under the same current and avoiding additional increase of the energy expenditure, thereby being suitable forrack plating and barrel plating.

The invention discloses a cloud module-based remote-control intelligent electro osmosis seepage prevention and moisture prevention system, which comprises a cloud computing simulation module, a simulation output module, a manual control module, an intelligent control module, a remote adjustment module, and a data acquisition and monitoring device. Data acquisition comprises acquisition of micro-current, voltage, wall humidity, air temperature, air humidity, and groundwater seepage pressure monitoring sensor data. cloud computing simulation of the remote-control intelligent electro osmosis seepage prevention and moisture prevention system can be realized, the device operation condition and the seepage prevention and moisture prevention effects can be monitored in real time, the device current and voltage parameters can be remotely controlled according to the monitored data, an operation mode of monitoring, feedback and timely processing is achieved, excessive electro osmosis of a concrete structure is prevented, the blank of a system for simulation of electro osmosis seepage prevention and moisture prevention is filled, cloud computing simulation is carried out, the system is convenient to operate, the execution effects of real-time prediction and early warning of electro osmosis seepage prevention and moisture prevention can be achieved, the remote-control intelligent real-timeperformance is realized, and the problem of uncertainties of the processing process of the electro osmosis seepage prevention and moisture prevention system can be reduced.