49 results about "Sodium phenoxide" patented technology

The invention relates to resource utilization of waste water containing phenol and sodium sulfate and a treating method, and especially to a method of treating waste water containing 0.1% to 2.0% of phenol and 5% to 30% of sodium sulfate and recycling phenol and sodium sulfate. The method comprises the following steps: (1) pH value adjusting; (2) evaporative concentration; (3) cooling and crystallization; (4) solid-liquid separation; (5) pH value adjusting; (6) evaporation and drying; (7) condensation; (8) pH value adjusting; (9) evaporation and drying. The method enables sodium phenolate and a byproduct of sodium sulfate to be obtained simultaneously. The invention has the advantages of a reasonable process, a simple method, environmental protection, energy consumption, low operational cost, good product quality and a high utilization rate of valuable components.

The invention relates to a process and a device for recovering and treating wastewater generated by preparing sebacic acid with castor oil. The process comprises the steps of a, adjusting the pH value, b, purifying a fatty acid, c, carrying out evaporative crystallization, d, carrying out solid-liquid separation of anhydrous sodium sulfate, e, purifying secondary steam by removing phenol, f, compressing the secondary steam, and g, repeating the steps c-f, and collecting a sodium phenate solution, condensate water and the separated solid obtained in the step d. The invention also relates to a device for recovering and treating wastewater generated by preparing sebacic acid with castor oil; the device comprises a pH regulating reservoir, a fatty acid purifier, a waste material delivery pump, a mechanical steam recompression/evaporative crystallization system, a dryer and the like. The recovery process is simple to operate and low in cost, and also capable of realizing zero emission of contaminants, and environment-friendly and energy-saving, and in the meantime, the recovery device is simple and easy to operate.

The invention releases to a recycling utilization and processing method for wastewater generated in a sebacic acid production process, in particular to a recycling utilization and processing method for wastewater containing phenol and sodium sulfate generated in the sebacic acid production process. The method comprises the following steps: (1) carrying out solid-liquid separation; (2) regulating a pH value; (3) carrying out liquid-liquid separation; (4) regulating the pH value; (5) evaporating and concentrating; (6) cooling and crystallizing; (7) carrying out solid-liquid separation; (8) regulating the pH value; (9) evaporating and drying; (10) condensing; (11) regulating the pH value; and (12) evaporating and condensing. With the technical method, the byproduct sodium sulfate can be obtained while sodium phenate is obtained. The recycling utilization and processing method has the advantages of reasonable technology, simple method, low operation cost, and high valuable ingredient use ratio, and is energy-saving and environmentally-friendly, and the generated products have high quality.

The invention relates an epoxy resin curing agent and a preparation method thereof, belonging to the technical field of auxiliary synthesis. A preparation process of the epoxy resin curing agent comprises synthesis of a first intermediate, synthesis of a second intermediate and synthesis of an end product. The preparation method specifically comprises the following steps: under protection of an inert atmosphere, dissolving phosphonitrilic chloride trimer in a solvent tetrahydrofuran, dropwise adding tetrahydrofuran liquor of sodium phenoxide, and reacting to obtain the first intermediate; dissolving aminophenol into the solvent tetrahydrofuran, dropwise adding tetrahydrofuran liquor of sodium hydride, and curing to obtain the second intermediate; and obtaining the product by reacting the first intermediate with the second intermediate. The curing agent obtained by adopting the technical scheme disclosed by the invention has characteristics of being simple to synthesize and prepare, high in thermal stability and high in high-temperature solid residual rate, contains a large number of nitrogen-phosphor elements, and has excellent halogen-free flame-retardant performance.

The invention provides a salicylic acid preparation method. The preparation method specifically comprises the following steps: step 1, preparing sodium phenoxide powder; step 2, preparing a sodium salicylate solution; step 3, preparing industrial salicylic acid; step 4, preparing salicylic acid; and step 5, recovering sodium salicylate. Salicylic acid and phenol are recovered from wastewater produced by salicylic acid preparation, and the recovery rate by using NDA-800 ultra-high cross-linked adsorption resin is high; purity of the recovered phenol and salicylic acid is high, the recovered phenol and salicylic acid can be directly produced and recycled, and the use is not influenced. The NDA-800 ultra-high cross-linked adsorption resin can be repeatedly used after desorption, and the recycled wastewater can reach the emission standard after simple treatment.

The invention relates to a dehydration technology and device for salicylic acid intermediate sodium phenoxide and belongs to the technical field of dehydration of sodium phenoxide. According to the dehydration technology for the salicylic acid intermediate sodium phenoxide, a prepared sodium phenoxide solution is heated, then a vacuum feeding manner is adopted, the sodium phenoxide solution is delivered to a membrane evaporator for evaporation dehydration, and steam in the membrane evaporator is collected after being condensed. With the adoption of the dehydration technology for the salicylic acid intermediate sodium phenoxide, the technology time is shortened and the heat utilization efficiency is improved; the dehydration device for the salicylic acid intermediate sodium phenoxide is simple to design, scientific and reasonable.

The invention belongs to the field of pesticides, and particularly relates to an application of phenol compounds as nematicides. The invention further discloses the application of one or more of the phenolic compounds represented by the general formula I or salts thereof in serving as the nematicides. The general formula I is shown in the specification. The compounds are suitable for being used asthe nematicides, especially sodium phenolate with good activity is commonly used as a preservative, and 3-hydroxybenzoic acid and 4-hydroxybenzoic acid are antioxidants which are widely applied at present, and the compounds are low in toxicity, low in price and easy to obtain.

The invention discloses a synthesis method of methyl salicylate. The method comprises the following steps: preparing sodium phenolate by using caustic soda flakes and phenol as raw materials, carryingout carboxylation reaction on the obtained sodium phenolate and carbon dioxide gas to obtain sodium salicylate, reacting the obtained sodium salicylate with chloromethane gas under the action of a phase transfer catalyst to obtain a crude methyl salicylate product containing a toluene solvent, neutralizing and washing the crude methyl salicylate product, recovering the toluene solvent at normal pressure, and carrying out vacuum distillation to obtain a finished methyl salicylate product. According to the method, a strong acid catalyst is not used, so that the wastewater amount is greatly reduced, and the corrosion to equipment and the pollution to the environment are reduced. According to the method, equipment is not seriously corroded, the wastewater amount is small, and the process is more environmentally friendly.

The invention discloses a preparation method of a quinone compound. The invention provides the preparation method of the quinone compound, the preparation method comprises the following step: in the presence of alkali, carrying out condensation reaction on a compound as shown in a formula II and a compound as shown in a formula III to obtain the quinone compound as shown in a formula I, the alkalinity of the alkali is stronger than that of sodium phenate. The method is easy to operate and suitable for industrial production.

The invention discloses an anti-cracking polyethylene photovoltaic cable material and a preparation method thereof, and the anti-cracking polyethylene photovoltaic cable material comprises the following raw materials by weight: 10-15 parts of crosslinked polyethylene, 5-7 parts of polyvinyl chloride, 5-7 parts of a heat stabilizer, 2-4 parts of a plasticizer, 2-4 parts of a hardener, 2-3 parts ofa colorant, 2-4 parts of a lubricant, 2-4 parts of a flame retardant, and 2-4 parts of zirconium dioxide. The heat stabilizer is composed of phenol, a methyltin heat stabilizer and a barium-zinc heatstabilizer, the lubricant is composed of sodium stearate and magnesium stearate, the hardener is composed of cellulose and glass fibers, the plasticizer is composed of cyclic fatty acid methyl ester and methyl phosphate, and the flame retardant is composed of triphenyl phosphate, melamine cyanurate and parachlorophenol. According to the invention, the overall tear resistance of the product is improved by adopting a cross-linked polyethylene polyvinyl chloride doping mode, phenol and sodium hydroxide are combined to generate sodium phenolate to absorb phosgene, and the effect of improving the safety of the product in the preparation and use processes can be achieved.

The invention discloses a method for synthesizing phenoxycycloposphazene. The method comprises the following steps: dissolving hexachlorocyclotriphosphazene and a phase transfer catalyst into an organic solvent so as to obtain an organic-phase raw material; by taking a sodium phenate aqueous solution as a water-phase raw material, simultaneously feeding the organic-phase raw material and the water-phase raw material into a multi-stage centrifugal extractor with a heating function, performing a multi-stage countercurrent reaction, dissolving generated phenoxycycloposphazene into an organic solvent to form an organic-phase reaction liquid, and dissolving generated sodium chloride into water to form a water-phase reaction liquid; and distilling the organic-phase reaction liquid supporting thephenoxycycloposphazene to remove the solvent, washing hot residues obtained after the solvent is removed by using a low-molecule alcohol, and performing solid-liquid separation after washing, so as to obtain the phenoxycycloposphazene. The method is possible in continuous production, simple in process and easy to control, and the product is high in yield and purity.

The preparation method comprises the following steps: adding phenol into an aqueous solution of sodium nitrite and sodium hydroxide to prepare a mixed solution of sodium phenolate and sodium nitrite, dropwise adding the mixed solution into a sulfuric acid solution at a preset temperature, and carrying out stirring reaction, filtering and washing to prepare an intermediate p-nitrosophenol wet material; dropwise adding a hydroxylamine hydrochloride aqueous solution into the intermediate p-nitrosophenol wet material, stirring for reaction, filtering and washing to obtain a p-benzoquinone dioxime wet material; the preparation method comprises the following steps: dissolving a p-benzoquinone dioxime wet material in an aqueous solution of sodium hydroxide to obtain an alkaline p-benzoquinone dioxime solution, dropwise adding a dilute NaClO solution into the alkaline p-benzoquinone dioxime solution, stirring, reacting, filtering and washing to obtain a p-dinitrobenzene product. According to the method, the raw material cost is low, only water is involved as a reaction solvent in the whole process, the operation process is simple, a wet material intermediate does not need to be dried in the process, and the finally prepared p-dinitrosobenzene has excellent adhesive performance.

The invention relates to a phenol-containing wastewater treatment method, which adopts liquid membrane extraction to treat phenol-containing wastewater, and comprises the following steps: 1, measuring the phenol content in the phenol-containing wastewater, adding a liquid membrane extract according to the measured phenol content, and fully mixing the liquid membrane extract and the phenol-containing wastewater at a stirring speed of 60r/min, reacting phenol in the phenol-containing wastewater with sodium hydroxide in the liquid membrane extraction liquid for 10 min; 2, performing standing for 10 min after the reaction is completed, layering a water phase and an emulsion phase, and separating the water phase from the emulsion phase to obtain an emulsion containing sodium phenate; and 3, stirring the emulsion containing sodium phenate obtained in the step 2 at a stirring speed of 1500r/min for 3-10min for demulsification, performing standing for 20min after demulsification is completed, layering a water phase and an oil phase, separating the oil phase from the phase, and continuing to use the oil phase as a preparation raw material of the liquid membrane extraction liquid. According to the method, phenolic compounds in the wastewater can be effectively enriched into the emulsion, the extraction liquid can be repeatedly used, the extraction efficiency is high, the energy consumption is low, and resources can be effectively saved while wastewater treatment reaches the standard.

The invention discloses a continuous production process of a sodium salicylate solution. The continuous production process comprises a sodium phenate solution storage tank, a sodium hydroxide solution storage tank, a centrifugal pump, a static mixer, a falling film evaporator, a horizontal film evaporator, a spiral feeder, a reaction kettle, a pressure gauge, a thermometer, a sodium salicylate powder storage tank, a sodium salicylate solution storage tank, a valve and the like. Outlets of the phenol solution storage tank and the sodium hydroxide solution storage tank are respectively connected to a static mixer through a pipeline, a manual ball valve and a centrifugal pump, the static mixer is connected to a reaction kettle through a falling film evaporator, a horizontal film evaporator and a spiral feeder, and the reaction kettle comprises a gas distribution pipe, a jacket, a motor, a thermometer and a pressure gauge. And the reaction kettle is connected to a sodium salicylate solution storage tank through a sodium salicylate powder storage tank. According to the invention, the continuous preparation of the sodium salicylate solution can be realized, and the problems of long production period, incapability of continuous feeding and discharging, high energy consumption and insufficient productivity in the existing intermittent production are solved.

The invention discloses a production method and application of p-phenylphenol, and the production method comprises the following steps: heating biphenyl and sulfuric acid to carry out sulfonation reaction, then neutralizing 4-phenylbenzenesulfonic acid in sulfonation reaction products by using sodium sulfite to generate sodium 4-phenylsulfonate and sulfur dioxide, collecting sulfur dioxide gas, cooling after the neutralization is finished, filtering, washing and drying to obtain p-phenylphenol. Filtering to obtain a sodium 4-phenylbenzenesulfonate solid; carrying out alkali fusion reaction on the sodium 4-phenylbenzenesulfonate solid and molten solid sodium hydroxide to generate sodium p-phenylphenolate and sodium sulfite; diluting the alkali fusion material with water, introducing collected sulfur dioxide for acidification reaction to generate p-phenylphenol and sodium sulfite, standing and separating to obtain crude p-phenylphenol and mother liquor, and finally rectifying to obtain p-phenylphenol. The method provided by the invention has the advantages of simple and easily available raw materials, good reaction atom economy, high yield, high product quality and low industrial cost, and is a feasible industrial production method of p-phenylphenol.

The invention discloses anti-freezing pumping concrete and a preparation method thereof. The anti-freezing pumping concrete comprises the following raw materials by weight: 220-260 parts of cement; 50-90 parts of fly ash; 60-100 parts of mineral powder; 870-970 parts of sand; 840-940 parts of stone; 150-190 parts of water; 8.5-9.5 parts of a pumping agent; 7.4-8.2 parts of an anti-freezing agent;0.1-0.14 part of an air entraining agent; and 0.03-0.05 part of a carbon adsorbent, which comprises 0.005-0.01 part of sodium phenolate, 0.01-0.018 part of sodium p-toluenesulfonate and 0.015-0.022 part of sodium stearate; the preparation method comprises the following steps of: conducting pretreatment: weighing the fly ash, the carbon adsorbent and 10% of water according to a stoichiometric ratio, performing mixing and stirring to prepare a solution, putting the solution into an ultrasonic oscillator, and setting the temperature at 30DEG C-40DEG C and controlling the ultrasonic reaction timeat 3min; weighing the raw materials according to the stoichiometric ratio, putting the raw materials into a stirrer, putting the pretreated solution into the stirrer, and fully stirring and mixing thesubstances uniformly. The anti-freezing pumping concrete can be used in the technical field of concrete, and has the advantages of reducing the inhibition effect of fly ash on the air entraining agent and improving the anti-freezing performance of the pumping concrete.

The invention discloses a synthetic method of 1-phenylvinyl borate The preparation method comprises the following steps: by taking (1-bromovinyl)benzene 1 and diborate 2 as raw materials and sodium phenolate and potassium bromide as reaction reagents, heating the raw materials in methylbenzene to finish reaction, extracting, washing and concentrating the reaction solution to obtain a crude product, and performing pulping, low-temperature recrystallization and other operations which are easy for pilot scale-up to obtain the final product 1-phenylvinyl borate. The method replaces the raw material potassium phenate in the prior art, and the reagent cost is reduced. The invention solves the problems that in an existing route, raw materials are not easy to obtain, boric acid ester substituted products at different positions are easily generated, post-treatment needs column separation and the like and are not suitable for pilot scale-up. The invention provides a synthesis process which has the advantages of economical and easily available raw materials, good reaction selectivity and economical and easily operated post-treatment.

The invention relates to a production method and equipment for reducing salt content and solid waste of p-methylphenol, and belongs to the technical field of chemical industry. The method comprises the following steps: carrying out a melting reaction on sodium p-toluene sulfonate and sodium hydroxide to generate sodium p-methylphenolate, and adding water for dipping to generate a solid-liquid mixture; then pumping into a flash tank for flash evaporation; carrying out solid-liquid separation on the solid-liquid mixture subjected to flash evaporation; introducing sulfur dioxide into the obtained liquid for acidification, and obtaining a p-methylphenol crude product after solid-liquid separation; washing the p-methylphenol crude product with condensed water collected during flash evaporation; and enabling the washed p-methylphenol crude product to enter a rectification section for refining treatment. Compared with an existing traditional production process for reducing the salt content and the solid waste output of p-methylphenol, the method has the remarkable advantages that the salt content and the solid waste output of p-methylphenol are low, the environmental protection effect is good, the process flow is shortened, the operation cost is low, the investment is saved, and the product quality is stable; and the p-methylphenol has higher market competitiveness.