31results about How to "Few control conditions" patented technology

The invention discloses a phenolic resin wastewater processing method and a special-purposed device. The phenolic resin wastewater processing method comprises the following steps: phenolic resin wastewater is mixed with Ca(OH)2, and a pH value is regulated to 10-12; a coagulation and sedimentation reaction is carried out; a pH value is regulated to 3-5; a Fenton reaction is carried out; a pH value is regulated to 7-10, and solid-liquid separation is carried out; a hydrolytic acidification-anaerobic fermentation process is carried out; a contact oxidation reaction is carried out; and secondary sedimentation is carried out. The special purposed device comprises the sequentially connected components of: a wastewater feeding tank, a coagulation and sedimentation reaction rank with a first feeder, a Fenton reaction device with a second feeder, a solid-liquid separation device with a third feeder, a hydrolytic acidification tank, an anaerobic fermentation tank, a contact oxidation reaction rank with an aeration device, and a secondary sedimentation tank. With the processing method, pollutant content in the processed wastewater reaches a discharge standard. The operation is simple, control conditions are less, and cost is low.

The invention provides a method for preparing magnesium lithium alloy cerium salt and molybdate-phosphate-zirconium fluoride conversion coating, which comprises: subjecting the magnesium lithium alloy to degreasing, pickling and activating; performing conversion by cerium salt for 10 to 15 minutes in cerium salt conversion solution under conditions of a pH value of 3 to 4 and a temperature of 40 DEG C, and forming a layer of rare earth conversion coating on the surface of the magnesium lithium alloy; and immersing in molybdate-phosphate-zirconium fluoride conversion solution to perform conversion for 12 to 15 minutes under conditions of a pH value of 3.7 to 3.8 and a temperature of 50 to 55 DEG C. The method has better anticorrosion effect and is environment friendly; the bonding force between the conversion coating and the substrate is high; the color of the conversion film is uniform; the anticorrosion performance is high; and the obtained molybdate-phosphate-zirconium fluoride conversion solution has high recycling value and long service life and can be better reduce production and application cost.

The invention discloses an air conditioner and a cleaning control method thereof. The air conditioner comprises a filter screen, a dust removing brush, a dust collecting box and a filter screen support, wherein the dust removing brush makes contact with the surface of the filter screen on an annular moving rail to clean the filter screen on the annular moving rail, and the dust collecting box is located below the dust removing brush on the annular moving rail. The filter screen support on the annular moving rail is provided with the annular moving rail and a filter screen driving device for driving the filter screen on the annular moving rail to move. The filter screen can move circularly on the filter screen support so as to be automatically cleaned, and the whole cleaning control process is simple and not prone to mistakes.

The invention provides a synthetic method of cellulose derivatives having a long alkoxyl side chain. The method includes the steps of (1) with a triphosgene method, synthesizing phenyl isocynate having the long alkoxyl side chain on the basis of phenylamine and triphosgene; and (2) with microcrystal cellulose as a substrate, introducing the long alkoxyl side chain into a main chain of cellulose through esterification to synthesize the cellulose phenyl carbamate derivatives having a long alkoxyl side chain. The synthetic method is clear and available in route, is mature in technology, is simple in operation, is less in conditions required to control, is easy to achieve and can be used in large-scale batched production.

Based on the molecular formula of the material of positive electrode of the lithium ion battery, the proportioning materials are prepared. The mechanical ball milling method is utilized to mix the materials evenly. With the deionized water being added, the said dmixture is stirred up to obtain the solution of the materials. Spraying the prepared solution to the refrigerating medium in liquid state with being stired up obtains the refrigeration object. With being filtered, the refrigeration object is quickly moved to the desiccator, which is freezed by liquid nitrogen in advance, so as to obtain the predecessor in fine crystal caused by vacuum drying. Nano anode material of lithium ion battery is obtained by sintering the predecessor in 3-10 hours at 500-1000 deg.C.

The invention provides magnesium-lithium alloy molybdate and phosphate conversion solution and a method for forming a conversion coating. The magnesium-lithium alloy molybdate and phosphate conversion solution is prepared from sodium molybdate serving as main salt, monosodium phosphate serving as secondary main salt, citric acid serving as a coordinating agent, sodium fluoride serving as an accelerator, sodium nitrate serving as an accelerating agent, and glacial acetic acid serving as a pH regulator. By using the magnesium-lithium alloy molybdate and phosphate conversion solution to treat a magnesium-lithium alloy, the formed molybdate-phosphate coating has high surface coverage degree on the magnesium-lithium alloy, is uniform and dense, and greatly improves the corrosion resistance of the matrix. The magnesium-lithium alloy molybdate and phosphate conversion solution and the method for forming the conversion coating have the advantages of simple and practicable process, short coating time, low cost, little influence on fatigue property of the magnesium-lithium alloy, low requirement on matrix materials, and no influence of the matrix materials.

The invention relates to a normal-temperature and normal-pressure synthesizing method of a Zr-Si-C ceramic precursor. The normal-temperature and normal-pressure synthesizing method includes the steps of firstly, dissolving dimethyl zirconium dicyclopentadiene in an organic solvent under inert gas atmosphere protection, stirring, adding an organic lithium compound and a ligand compound, and drying to obtain active zirconium dicyclopentadiene lithium salt; secondly, dissolving the active zirconium dicyclopentadiene lithium salt with an organic solvent under inert gas atmosphere protection, stirring, adding halogenated silane monomer, performing polymerization reaction, dropwise adding a terminating agent to terminate the reaction, filtering, concentrating, purifying, and drying to obtain the Zr-Si-C ceramic precursor. The normal-temperature and normal-pressure synthesizing method has the advantages that conditions such as high temperature, low temperature, high pressure and energizing are not needed, the reaction can be performed under normal temperature and normal pressure, the dimethyl zirconium dicyclopentadiene high in activity and cheap and safe n-butyl lithium are used to have reaction with the halogenated silane monomer so as to prepare the Zr-Si-C ceramic precursor through a two-step method, and the preparation method is simple, scientific and reasonable; the Zr-Si-C ceramic precursor synthesized by the method is diversified and can be used for prepared various kinds of Zr-Si-C ceramics.

The invention discloses a modified aluminate cement retarder as well as a preparation method and application thereof and belongs to the technical field of cement retarding. The modified aluminate cement retarder comprises AMPS, unsaturated carboxylic acid, boric acid and glucose. The boric acid and the unsaturated carboxylic acid are combined and the boric acid forms a compact calcium borate covering layer by adsorbing calcium ions, so that the hydration reaction process of the cement is blocked and the early strength of cement stones is influenced. The structure of the calcium borate coveringlayer is damaged by doping a large amount of hydroxyl acid, so that cement particles can continuously perform hydration reaction under the damage of the covering layer after a period of time, and theeffect of stopping retarding is achieved. The content of the unsaturated carboxylic acid is high, and the carboxylic group in the retarder can achieve the retarding effect and also can improve the right angle thickening property of cement slurry.

The invention discloses a preparation method of carbon-coated and doped lithium-iron phosphate, which is a synthetic process of reduction, oxidation and reduction crushing and comprises the following steps of: synthesizing a lithium-iron phosphate crude product by adopting a cheap iron sources, a phosphate-group source and a lithium source through high-temperature reduction, then crushing and refining large grains in the crude product through an oxidizing reaction, and finally obtaining a lithium-iron phosphate material with excellent electrochemical performance through heat processing and reduction after being mixed with a reduced carbon source. The large lithium-iron phosphate grains in the lithium-iron phosphate material prepared by the invention is refined, and the lithium-iron phosphate with uniform and fine grains is prepared from the refined grains through carbon-coated reduction; and because the grains of the raw material are small and are uniformly mixed, the grains can be converted into lithium-iron phosphate crystals with fine grains at a lower temperature.

The invention belongs to the technical field of production of metatitanic acid through titanium dioxide slurry, and particularly relates to a production method and equipment for producing metatitanic acid through titanium dioxide slurry.The production method for producing metatitanic acid through the titanium dioxide slurry is characterized by comprising the following steps of 1 diluting; 2 reacting by adding alkali; 3 reacting by adding acid; 4 water washing; 5 recycling; 6 spin-drying; 7 drying; 8 milling; 9 packaging.The production equipment for producing metatitanic acid through the titanium dioxide slurry is characterized by comprising reacting washing equipment (1), a supernatant liquor vertical flow sedimentation device (2), a delivery pump (3), a spin-drying device (4), a drying device (5) and a ball mill.According to the production method and equipment, few technological steps and few control conditions are needed, the equipment structure is simple, operation is convenient, reacting is complete, and the recycling rate and quality of metatitanic acid are guaranteed.

The invention provides a preparation method of a functional inorganic silicon-based chiral microsphere fixed-phase material based on amylose derivatives. The preparation method comprises the following steps: taking amylose as an initial raw material; simultaneously introducing 3,5-dimethylphenylcarbamate and a small amount of 3-(trimethylsiloxy)propyl carbamate in a sugar unit of the amylose; and synthesizing into amylose-tri(3,5-dimethylphenylcarbamate) derivatives containing a small amount of 3-(trimethylsiloxy)propyl groups . On that basis, the synthesized amylose derivatives are fully dissolved in tetrahydrofuran, the mixture and tetraethylortho silicate are subjected to crosslinking copolymerization by a sol-gel process, then the product is dispersed and aged in a sodium dodecyl sulfate aqueous solution, and finally, organic and inorganic hybridized silicon spheres with high content of the amylose derivatives are prepared. The surface of the obtained material is subjected to end sealing. The whole synthesis process is simple, mature and easy to control, the yield is high, and therefore, the preparation method can be used for large-scale batch production.

First, with the proportioning materials being prepared, the mechanical ball milling method is utilized to mix the materials evenly. With the deionized water being added, the said admixture is stirredup to obtain the solution of the materials. The prepared solution is filled to the non-aqueous organic solvent slowly ty obtain the predecessor in fine crystal. With the predecessor being vacuum dried, the anode material of lithium ion battery is obtained by sintering the predecessor in 3-10 hours at 500-1200 deg.C. The invention features the low sintering temperature and time, the even granule (100nm-700nm) of the material and good electrochemistry performances.

The invention relates to a controllable synthesis method of highly stereoregular polymethyl methacrylate. The method comprises the following steps that: 1, with amylose adopted as a matrix raw material and 3, 5-dimethylphenyl isocyanate as a derivatization reagent, a spiral polymer amylose-tri (3, 5-dimethylphenyl carbamate) is synthesized by a traditional esterification method; and step 2, the synthesized amylose-tri (3, 5-dimethylphenyl carbamate) obtained in the step 1 is added into a methyl methacrylate free radical polymerization reaction as an additive, the regular spiral structure of the synthesized amylose-tri (3, 5-dimethylphenyl carbamate) is used for inducing the free radical polymerization behavior of methyl methacrylate, and finally the highly stereoregular polymethyl methacrylate is prepared. The method of the invention is clear and feasible in synthetic route, is mature in process and simple in operation, requires few control conditions, is easy to realize and can be used for large-scale batch production.

The invention provides a method for preparing ordered manganese oxides. 1) Take a certain amount of saturated oxalic acid solution; 2) Add manganese nitrate to the oxalic acid solution at a ratio of 3-5 mmol of manganese nitrate per 0.1L of saturated oxalic acid solution, and stir on a magnetic stirrer to make a uniform Mix the solution; 3) magnetically stir at room temperature until a large amount of precipitation appears; 4) wash the precipitate obtained in 3) with alcohol and distilled water several times in sequence to obtain a precursor; 5) dry the precursor at 80°C; 6) dry the The dry precursor was ground into a fine powder and calcined at 800°C for 6 hours to obtain the product. The shape of the product obtained by the method of the invention is close to a rod shape, and is arranged in order to form a large sheet. The synthesis cost is low, the synthesis steps are few, the operation is simple, the reaction conditions are mild, environmental protection and energy saving, the conditions to be controlled are few and easy to implement, and it is very promising to be applied to large-scale production.

The invention belongs to the technical filed of production of metatitanic acid from titanium dioxide slurry and particularly relates to a reacting and washing process and equipment for production of metatitanic acid from the titanium dioxide slurry. The reacting and washing process for production of metatitanic acid from the titanium dioxide slurry is characterized by comprising the following steps: A, dilution; B, alkali-added reaction; C, acid-added reaction; D, washing. The reacting and washing equipment for production of metatitanic acid from the titanium dioxide slurry is characterized by comprising a washing tank (1), a stirring device (2), a liquid absorbing device (3), an alkali liquor tank (4), an acid liquor tank (5) and a water tank (6). The process comprises a few steps and a few control conditions, the equipment is simple in structure and convenient to operate, reactions are sufficient, and the recovery rate and quality of metatitanic acid precipitates are guaranteed.

The invention discloses a tubular continuous production technology for generating six-membered heterocyclic compounds by means of dehydration cyclization, particularly N-((2Z)-piperazine-2-subunit)-2, 2, 2-trifluoroacetyl hydrazine (1) by taking 5-trifluoromethyl-2-chloromethyl methyl ether-1, 3, 4-NBD-F as a raw material in the presence of ethidene diamine. The channelized method for continuously producing 1 comprises the following steps of: firstly, putting methanol solution of ethidene diamine into one storage tank, putting the methanol solution of raw material NBD-F into the other storage tank, and keeping at a proper temperature T1; directly charging the methanol solution in the two storage tanks into a tubular reactor according to a certain proportion, and controlling the reaction temperature in the tubular reactor at T2, and the reaction time at t; and charging the obtained reaction liquid into a crystallization kettle to be cooled to separate out white solid. The synthesis technology provided by the invention has the advantages of being simple in device, good in technological safety, mild in reaction conditions, easy to control, continuous in production, environment-friendly, high in yield, stable in product quality and the like.

The invention provides a method for synthesizing cellulose derivatives with long alkoxy side chains. (1) Using the triphosgene method to synthesize phenyl isocyanate with long alkoxy side chains based on aniline and triphosgene; (2) Using microcrystalline cellulose as a substrate, introducing long alkoxy side chains into cellulose by esterification In the main chain, cellulose phenyl carbamate derivatives with long alkoxy side chains were synthesized. The invention has clear and feasible synthesis route, mature process, simple operation, few conditions to be controlled and easy realization, and can be used for large-scale batch production.

The invention discloses a phenolic resin wastewater processing method and a special-purposed device. The phenolic resin wastewater processing method comprises the following steps: phenolic resin wastewater is mixed with Ca(OH)2, and a pH value is regulated to 10-12; a coagulation and sedimentation reaction is carried out; a pH value is regulated to 3-5; a Fenton reaction is carried out; a pH value is regulated to 7-10, and solid-liquid separation is carried out; a hydrolytic acidification-anaerobic fermentation process is carried out; a contact oxidation reaction is carried out; and secondary sedimentation is carried out. The special purposed device comprises the sequentially connected components of: a wastewater feeding tank, a coagulation and sedimentation reaction rank with a first feeder, a Fenton reaction device with a second feeder, a solid-liquid separation device with a third feeder, a hydrolytic acidification tank, an anaerobic fermentation tank, a contact oxidation reaction rank with an aeration device, and a secondary sedimentation tank. With the processing method, pollutant content in the processed wastewater reaches a discharge standard. The operation is simple, control conditions are less, and cost is low.

The invention discloses a method for accelerating adult Tachypleus tridentatus sexual maturity and cultivation system using the method. The method accelerates the adult Tachypleus tridentatus sexual maturity by controlling the water level and water flow of a cultivation pond to simulate the tidal phenomenon of the natural environment. The cultivation system comprises the cultivation pond, a micro-filter, a low-level reservoir, a water pump, a biological filter tank, a protein separator, an ozone sterilizer, an ultraviolet sterilizer and a high-level reservoir which are sequentially connected through pipelines and is characterized in that the high-level reservoir is connected with the cultivation pond through a pipeline; a water quality monitoring device I is mounted on the low-level reservoir, and a water quality monitoring device II and a temperature control device are mounted on the high-level reservoir; coral sand is laid on the bottom of the cultivation pond. The method is few in control conditions, simple to operate and good in effect. The circulating-water cultivation system is capable of avoiding the poor water quality problem of existing cultivation manners, and the problemof appendage abrasion of adult Tachypleus tridentatus during movement in the cement pond is solved by laying the coral sand on the bottom of the cultivation pond.

The invention provides a controllable synthesis method of stereoregular polymethyl methacrylate, step 1: using microcrystalline cellulose as a matrix raw material, and using 3,5-dimethylphenylisocyanate as a derivatization reagent, Synthesize the helical polymer cellulose-tri(3,5-dimethylphenylcarbamate) by traditional esterification method; Base carbamate) was added as a chiral inducer in the free radical polymerization of methyl methacrylate, and stereoregular polymethyl methacrylate was finally prepared. The synthesis route of the present invention is clear and feasible, the process is mature, the operation is simple, the conditions that need to be controlled are few and easy to realize, and can be used for large-scale batch production, the source of cellulose, methyl methacrylate and azobisisobutyronitrile used in the present invention It is widely available, cheap and easy to obtain, and the whole synthesis process is simple, mature and easy to control.

The invention relates to a response surface optimization method for reducing the heavy metal content of crops in a biogas slurry returning mode, which comprises the following steps: selecting a plurality of test factors, and setting the gradient value of each test factor in each test based on the Box-Behnken principle of a response surface method; based on the set gradient value, carrying out potting tests on a plurality of biogas slurry returning crops, and collecting the heavy metal element content of the plants after the growth period of the crops ends; performing polynomial fitting based on test data by taking the heavy metal element content as a dependent variable and the gradient of each test factor as an independent variable to obtain a multiple regression model equation; and obtaining a response surface diagram based on the multiple regression model equation, and obtaining an optimal condition for minimizing the heavy metal content of the crops cultured in the biogas slurry. Compared with the prior art, the method has the advantages of flexibility, rapidness, convenience, low cost and the like, and an optimal solution can be provided for the problem of heavy metal accumulation of crops returning the biogas slurry to the field.

The invention discloses a tubular continuous production technology for generating six-membered heterocyclic compounds by means of dehydration cyclization, particularly N-((2Z)-piperazine-2-subunit)-2, 2, 2-trifluoroacetyl hydrazine (1) by taking 5-trifluoromethyl-2-chloromethyl methyl ether-1, 3, 4-NBD-F as a raw material in the presence of ethidene diamine. The channelized method for continuously producing 1 comprises the following steps of: firstly, putting methanol solution of ethidene diamine into one storage tank, putting the methanol solution of raw material NBD-F into the other storage tank, and keeping at a proper temperature T1; directly charging the methanol solution in the two storage tanks into a tubular reactor according to a certain proportion, and controlling the reaction temperature in the tubular reactor at T2, and the reaction time at t; and charging the obtained reaction liquid into a crystallization kettle to be cooled to separate out white solid. The synthesis technology provided by the invention has the advantages of being simple in device, good in technological safety, mild in reaction conditions, easy to control, continuous in production, environment-friendly, high in yield, stable in product quality and the like.

The invention provides a method for preparing magnesium lithium alloy cerium salt and molybdate-phosphate-zirconium fluoride conversion coating, which comprises: subjecting the magnesium lithium alloy to degreasing, pickling and activating; performing conversion by cerium salt for 10 to 15 minutes in cerium salt conversion solution under conditions of a pH value of 3 to 4 and a temperature of 40 DEG C, and forming a layer of rare earth conversion coating on the surface of the magnesium lithium alloy; and immersing in molybdate-phosphate-zirconium fluoride conversion solution to perform conversion for 12 to 15 minutes under conditions of a pH value of 3.7 to 3.8 and a temperature of 50 to 55 DEG C. The method has better anticorrosion effect and is environment friendly; the bonding force between the conversion coating and the substrate is high; the color of the conversion film is uniform; the anticorrosion performance is high; and the obtained molybdate-phosphate-zirconium fluoride conversion solution has high recycling value and long service life and can be better reduce production and application cost.

The invention provides magnesium-lithium alloy molybdate and phosphate conversion solution and a method for forming a conversion coating. The magnesium-lithium alloy molybdate and phosphate conversion solution is prepared from sodium molybdate serving as main salt, monosodium phosphate serving as secondary main salt, citric acid serving as a coordinating agent, sodium fluoride serving as an accelerator, sodium nitrate serving as an accelerating agent, and glacial acetic acid serving as a pH regulator. By using the magnesium-lithium alloy molybdate and phosphate conversion solution to treat a magnesium-lithium alloy, the formed molybdate-phosphate coating has high surface coverage degree on the magnesium-lithium alloy, is uniform and dense, and greatly improves the corrosion resistance of the matrix. The magnesium-lithium alloy molybdate and phosphate conversion solution and the method for forming the conversion coating have the advantages of simple and practicable process, short coating time, low cost, little influence on fatigue property of the magnesium-lithium alloy, low requirement on matrix materials, and no influence of the matrix materials.

The invention belongs to the technical filed of production of metatitanic acid from titanium dioxide slurry and particularly relates to a reacting and washing process and equipment for production of metatitanic acid from the titanium dioxide slurry. The reacting and washing process for production of metatitanic acid from the titanium dioxide slurry is characterized by comprising the following steps: A, dilution; B, alkali-added reaction; C, acid-added reaction; D, washing. The reacting and washing equipment for production of metatitanic acid from the titanium dioxide slurry is characterized by comprising a washing tank (1), a stirring device (2), a liquid absorbing device (3), an alkali liquor tank (4), an acid liquor tank (5) and a water tank (6). The process comprises a few steps and a few control conditions, the equipment is simple in structure and convenient to operate, reactions are sufficient, and the recovery rate and quality of metatitanic acid precipitates are guaranteed.

The invention belongs to the field of processing, and specifically relates to novel suspension type freeze concentration equipment. The novel suspension type freeze concentration equipment provided by the invention comprises a scraper type heat exchanger, a liquid distribution disc, an ice scraping device, an ice crystal carrying tank, a heavy crystallizing tank, an ice crystal delivery pipe, an ice discharging tank and a material supplying tank, wherein the lower end of the scraper type heat exchanger is connected with the upper end of the ice crystal carrying tank, and the lower end of the ice crystal carrying tank is connected with the upper end of the heavy crystallizing tank; the upper part of the heavy crystallizing tank is communicated with the ice discharging tank through a guiding pipe, the bottom or side surface of the heavy crystallizing tank is communicated with one end of a pipeline I with a pump a, and the other end of the pipeline I is connected with the top of the scraper type heat exchanger so as to form a material liquid circulating system. The novel suspension type freeze concentration equipment provided by the invention has the characteristics that the energy consumption is low, a scraper is not easy to clamp, the concentration efficiency is high, the operation is simple, few controlling conditions are required, and the production efficiency is high, and thus the novel suspension type freeze concentration equipment is beneficial for mass production application.

The invention discloses a modified aluminate cement retarder as well as a preparation method and application thereof and belongs to the technical field of cement retarding. The modified aluminate cement retarder comprises AMPS, unsaturated carboxylic acid, boric acid and glucose. The boric acid and the unsaturated carboxylic acid are combined and the boric acid forms a compact calcium borate covering layer by adsorbing calcium ions, so that the hydration reaction process of the cement is blocked and the early strength of cement stones is influenced. The structure of the calcium borate coveringlayer is damaged by doping a large amount of hydroxyl acid, so that cement particles can continuously perform hydration reaction under the damage of the covering layer after a period of time, and theeffect of stopping retarding is achieved. The content of the unsaturated carboxylic acid is high, and the carboxylic group in the retarder can achieve the retarding effect and also can improve the right angle thickening property of cement slurry.