Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

6354 results about "Mother liquor" patented technology

A mother liquor is the part of a solution that is left over after crystallization. It is encountered in chemical processes including sugar refining.It is the liquid obtained by filtering the crystals by filtration.

Quick and efficient synthesis method for silver nanowires

InactiveCN101934377AImprove production efficiencyReduce reaction preparation timeHigh concentrationSynthesis methods
The invention discloses a quick and efficient synthesis method for silver nanowires. The method comprises the following steps of: 1) introducing inert gas into a reactor, adding 2 volume parts of glycol into the reactor, and stirring, heating, condensing and refluxing the glycol; quickly adding 1 volume part of glycol solution of silver nitrate at molar concentration of between 0.1 and 0.5m into the reactor; slowly dropwise adding 1 to 2 volume parts of PVP at molar concentration of between 0.15 and 0.75m and 4 to 32 mu m of glycol solution of MnCl2 at the same time; and reacting and cooling the mixture to the room temperature to obtain reaction mother liquor of the silver nanowires; and 2) transferring the reaction mother liquor of the silver nanowires into a centrifugal tube; adding acetone into the centrifugal tube and performing centrifugal separation to remove supernatant and retain precipitate; adding de-ionized water or ethanol into the centrifugal tube and performing centrifugal separation to remove the supernatant and retain precipitate, and repeating the operation for 1 to 3 times; and extracting and dispersing the precipitate with ethanol to obtain the silver nanowires. The method shortens the reaction time and also has high selectivity for the synthesis of the silver nanowires under conditions of high concentration.
Owner:ZHEJIANG UNIV

Technological process for producing high concentration nitric-phosphate fertilizer

ActiveCN101486595AHigh crystallinityGood filter strengthHigh concentrationDihydrate Calcium Sulfate
The invention discloses a technique method for producing high-concentration nitric phosphate, which comprises the following steps of: adding nitric acid into phosphorus ore for acidolysis, depositing and separating acid non-soluble substance, freezing and crystallizing calcium nitrate, filtering the calcium nitrate, neutralizing the mother liquid, vaporization, pelleting and drying. The invention is characterized in that: a step of thoroughly removing the calcium of the mother liquid is arranged between the steps of filtering the calcium nitrate, and neutralizing the mother liquid. The steps comprise the following steps of: I) thoroughly removing the calcium of the mother liquid and adding sulfuric acid or ammonium sulfate; the calcium ions and the sulfate ions in the mother liquid generate dihydrate calcium sulfate crystal; II) the grading processing of reaction slurry: employing a grading device to carry out grading processing to the reaction slurry; returning the reaction slurry provided with small grain calcium sulfate to the mother liquid for thoroughly removing the calcium, and feeding the reaction slurry provided with large grain calcium sulfate to the calcium sulfate for filtering; and III) filtering and washing the filtering reaction slurry of calcium sulfate by a filter, feeding the primary filtrate and the primary lavage fluid into the working procedure of neutralizing, and returning the secondary lavage fluid to the filter. The invention has the advantage of using middle-low quality phosphorite to prepare the high-concentration nitric phosphate.
Owner:TIANJI COAL CHEM IND GROUP +1

Method of preparing silver nanowire by utilization of hydrothermal method

InactiveCN103084584AImprove processing stabilityLow sensitivity to process parametersNanotechnologyMetal chlorideHigh volume manufacturing
The invention relates to a method of preparing silver nanowire by utilization of a hydrothermal method. The steps including: directly mixing ethylene glycol PVP solution which contains metal chloride with the concentration of 0.01M-2MPVP and the concentration of 1*10M-1*10-2M with ethylene glycol silver nitrate solution with the concentration of 0.01M-1M at normal temperature, stirring the mixed solution to be uniformed mixed, obtaining mixed reaction mother solution; the volume ratio of ethylene glycol silver nitrate solution to ethylene glycol PVP solution is 1:1-10:1; the molar ratio of silver nitrate to the PVP in the mixed reaction mother solution is 1:10-10:1, and the molar ration of silver nitrate to metal chloride is 10:1-104:1; putting the mixed reaction mother solution into an reaction kettle, warming the mixed reaction mother solution to 160 DEG C - 180 DEG C to carry out reduction reaction, the silver salt in the mother solution is restored, and silver nanowire is obtained. The method of preparing silver nanowire by utilization of the hydrothermal method has the advantage of being simple and high-efficient, no need of being preheated when the preliminary reaction is carried out at the normal temperature, easy to control of reaction conditions, and especially applicable to mass production.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Process method for recovering ammonium chloride and sodium chloride from waste water containing ammonium chloride and sodium chloride

The invention relates to a process method for recovering ammonium chloride and sodium chloride from waste water containing the ammonium chloride and the sodium chloride, which produces the ammonium chloride and the sodium chloride by using mother solution which is generated in a process for producing sodium bicarbonate by natural bittern double decomposition reaction and contains the ammonium chloride and the sodium chloride as raw materials. The method adopts ammonium still, evaporation, crystallization and separation process to treat, wherein the evaporation adopts multiple-effect, a heat pump and a vacuum evaporation process, and selects a falling film evaporator and a forced circulation type evaporator to perform triple-effect mixed-flow procedure, so that sodium chloride is crystallized and separated in the evaporation; and the ammonium chloride is crystallized and separated by cooling after the evaporation. The method effectively reduces the operation temperature of the equipment, can repeatedly use secondary steam and condensed water, reduces erosion of the ammonium chloride solution to the equipment, saves the energy, reduces the cost, improves the production efficiency, and reduces environmental pollution.
Owner:HEBEI UNIV OF TECH +1

Method for totally extracting vanadium, gallium and scandium by using titanium dioxide hydrolysis waste acid to leach steel slag containing vanadium

InactiveCN102011010AReduce processing costsSave the cost of sulfuric acidProcess efficiency improvementSlagHydrolysis
The invention relates to a method for extracting, separating and recovering vanadium, gallium and scandium in pickle liquor by adopting a total extracting method and using titanium dioxide hydrolysis waste acid to leach steel slag containing vanadium, comprising the following steps of: mixing and stirring titanium dioxide hydrolysis waste acid and steel slag containing vanadium to obtain leaching pulp; performing solid-liquid separation for the leaching pulp, totally extracting vanadium, gallium and scandium in filtered liquor with five-category return flow, then back-extracting vanadium and gallium with five-category return flow, neutralizing with ammonium bicarbonate or ammonia water, warning up, precipitating vanadium to obtain ammonium polyvanadate, repeatedly back-extracting and precipitating vanadium for precipitating-vanadium mother liquor, and then recovering gallium; and when a back-extracting vanadium and gallium organic phase is repeatedly totally extracted and back-extracted till the content of scandium in the back-extracting vanadium and gallium organic phase is 50-1000mg, recovering scandium. The invention has the beneficial effects that waste is treated with waste, namely vanadium, gallium and scandium are recovered by using titanium dioxide hydrolysis waste acid to leach steel slag containing vanadium, and the sulfuric acid cost is saved; the method has great social and economic benefits and low production cost for producing gallium and scandium; without roasting, no waste gas is produced, and three wastes can be discharged with corresponding standards.
Owner:杨秋良 +1

Drug dispensing method of automated drug dispensing system, and automated drug dispensing system

The present invention belongs to the technical field of automated drug dispensing methods and apparatuses, and discloses a drug dispensing method of an automated drug dispensing system, and the automated drug dispensing system. The drug dispensing method comprises the following steps that: a drug bottle is placed on a drug liquid input shaking apparatus; a multi-shaft robot moves the drug bottle to a bottle breaking device, and the drug bottle is broken through the bottle breaking device; the multi-shaft robot moves the drug bottle to the drug liquid input shaking apparatus; a hose filling transferring and drug liquid distribution device inserts needles on both ends of an infusion hose into the drug bottle or/and a mother liquor bottle, and pumps the drug liquid; and the drug liquid input shaking apparatus shakes the drug liquid on the drug liquid input shaking apparatus. With the drug dispensing method of the automated drug dispensing system, and the automated drug dispensing system in the present invention, dispensing of multiple groups of drug liquids can be rapidly completed so as to improve drug dispensing efficiency, greatly reduce labor intensity of health care workers, and easily ensure health and safety of health care workers.
Owner:上海市卫邦机器人有限公司

Method for preparing lithium carbonate by extracting lithium from lepidolite

The invention relates to a method for preparing lithium carbonate by extracting lithium from lepidolite. The method comprises the following steps of: a. calcination and defluorination at a high temperature; b. grinding; c. autoclaving; d. impurity removal; e. condensation; f. sodium separation by freezing; g. ithium precipitation by carbonization, wherein, in the step c, the grinded lepidolite, calcium oxide and sodium salt are thrown into a high-pressure kettle for autoclaving; the lepidolite is decomposed in the continuous stirring state; and alkali metal in the lepidolite is subject to ion exchange, turned into salt and dissolved out. In the step d, an autoclaving mother solution and autoclaving residues are obtained after separation and autoclaving; sodium hudroxide with slightly excess amount according to the Lithia content in the autoclaving mother solution is added and evenly stirred, then activated carbon is added for filtering and impurity removal. In the step g, CO2 is led to a sodium separation mother solution till the PH value of the solution is equal to between 9 and 10; the mother solution is heated, stirred, carbonized and subject to centrifugal water spinning and separation to obtain coarse lithium carbonate; backwashing and drying are carried out to the coarse lithium carbonate, thereby obtaining a product of lithium carbonate. The method has the advantages that: the method has high lithium yield rate; residues can be utilized; and sodium salt can be recycled, etc.
Owner:GANFENG LITHIUM CO LTD

Crystallization treatment method and device of high salt wastewater

The invention relates to a crystallization treatment method and device of high salt wastewater and belongs to the technical field of water treatment. The method is characterized in that after sodium sulfate concentrated water is treated by a freezing crystallization system, generated mother liquor A enters into an MVR system for evaporative crystallization; after sodium chloride concentrated water is treated by the MVR system, generated mother liquor B enters into a freezing crystallization system for freezing crystallization, and the mother liquor can be treated in a circulation overlapping manner; a drain outlet of the MVR system of the device is connected with a liquid inlet of a crystallization tank in the freezing crystallization system through a pipeline and the drain outlet of the freezing crystallization system is connected with a liquid inlet pipe of the MVR evaporative crystallization system. The method has the advantages that the mother liquor is treated by a freezing crystallization technology and an MVR evaporation crystallization technology in a circulation overlapping manner, so that the problems of zero emission and resource utilization are solved, and therefore, the energy consumption is effectively reduced and the operating cost is lowered.
Owner:INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH

Method for separating antimony and arsenic from antimony and arsenic-containing ash through oxidation and alkaline leaching

The invention relates to a method for separating antimony and arsenic from antimony and arsenic-containing ash through an oxidation and alkaline leaching process. The method comprises the specific steps that the antimony and arsenic-containing ash and an alkaline solution with a certain concentration are mixed and then placed in an alkali-resisting and pressure-resisting reaction kettle, and a gaseous oxidizing agent of a certain pressure is introduced into the reaction kettle to conduct a reaction at a certain temperature; after the reaction is completed, liquid-solid separation is carried out when slurry is cooled to the temperature below 90 DEG C, and a liquid phase is returned to the pressure alkaline leaching procedure; a filter cake is subjected to multistage countercurrent washing and filtering with hot water, and arsenic-enriched washing liquid and an antimonite filter cake are obtained; the antimonite filter cake can serve as an antimony concentrate for preparation of antimony oxide powder; and the arsenic-enriched washing liquid is evaporated, then cooled and crystallized, the crystallization end-point temperature and the crystallization time are controlled, arsenate crystals can be obtained after liquid-solid separation, and crystallization mother liquor is alkaline liquor containing a little amount of arsenic and is returned for the leaching process of the antimony and arsenic-containing ash. By means of the method, the process is simple, antimony and arsenic are separated thoroughly, harm caused by arsenic volatilization during the roasting process and arsenic hydride gas produced through the acid leaching process can be avoided, and environmental friendliness is achieved.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI +1

Wastewater evaporating process and device system

The invention discloses a wastewater evaporating process and device system. The wastewater evaporating process comprises the following steps: the wastewater to be treated firstly enters a pretreatment softening system for softening treatment and secondly enters a mechanical vapor recompression (MVR) system for evaporation concentration; the generated secondary steam is compressed and enters an evaporator for recycling; the concentrated solution enters a triple effect flow-mixing forced circulation evaporation and crystallization system for evaporation and crystallization; the generated secondary steam is reused by the evaporation and crystallization system; the concentrated solution and crystalline grains obtained through crystallization are subject to solid-liquid centrifugal separation; the separated mother solution is sent back to a raw liquor tank or evaporated continuously for crystallization; and the separated crystals enter a centrifugal drying and packaging system for weighting and packaging. After the process disclosed by the invention is adopted to soften, evaporate and crystallize wastewater and dry and package the obtained crystals, wastewater is not discharged to the water bodies of the surface of earth and the aim of zero wastewater discharge can be realized; the process system is low-carbon and environmentally friendly; the material can be recycled, the thermal efficiency is high, the energy consumption is low, the energy can be saved, the operating cost can be greatly reduced, the range of temperature is small, the corrosion is low and the service life of the equipment is long, and the scaling has small possibility of occurrence.
Owner:华电水务工程有限公司 +1

Method for preparing high-temperature resistant and salt resistant tackifier for drilling fluid

ActiveCN101955564ASolve the problem of viscosity reductionInhibition of hydration dispersionDrilling compositionGramTackifier
The invention relates to a method for preparing high-temperature resistant and salt resistant tackifier for drilling fluid, which comprises the following: (1) a step of preparing raw materials, in which 56 to 60 grams of 2-acrylamido-2-methyl propane sulfonic acid, 20 to 30 grams of acrylamide, 15 to 25 grams of acrylic acid and 0.1 to 0.2 grams of initiator are prepared according to the additionamount in each 100 milliliters of water; (2) a step of preparing mother solution, in which the 2-acrylamido-2-methyl propane sulfonic acid, the acrylamide and the acrylic acid are added into water toprepare initial mother solution, the pH value of the initial solution is regulated to 6 to 7 with sodium hydroxide solution at a mass percentage concentration of 20 to 30 percent to prepare the mother solution; (3) a step of polymerization, in which the mother solution obtained by the step (2) to 60 to 80 DEG C, the initiator is added, and a reaction is performed for 2 to 4 hours; and (4) a step of drying, in which the mixture formed after the reaction in the step (3) is dried at 95 to 105 DEG C and crushed, and thus the high-temperature resistant and salt resistant tackifier for drilling fluid is prepared. When added in high-temperature and high-salt drilling fluid, the high-temperature resistant and salt resistant tackifier for drilling fluid can regulate flow type, flocculate and coat drillings and inhibit shale hydrous disintegration.
Owner:北京奥凯立科技发展股份有限公司

Method for processing and producing pickle products by circularly utilizing bifida ferment lysate

The invention relates to the technical field of deep processing of vegetable products, in particular to a method for processing and producing pickle products by circularly utilizing bifida ferment lysate. The method is characterized by comprising the following steps of: (1) processing fresh vegetable into parts with proper size; (2) drying via hot air to remove partial water; (3) transferring the processed vegetables into ozone water to clean and sterilize and remove resident pesticide; (4) by taking the residual bifida ferment lysate, which has viable bacteria count not less than 10<5> pieces per milliliter and is produced by fermenting pickle, as mother liquor, properly adding water, table salt and glucose to prepare into lactobacillus fermenting water; (5) transferring the primarily sterilized vegetables into a fermenting tank, introducing the lactobacillus fermenting water, and dipping for fermenting; and (6) taking the fermented vegetables; spinning to remove partial water, mixing with ingredients, packing in a vacuum condition, and pasteuring to obtain the finished product of the pickle. The method for processing and producing the pickle products by circularly utilizing the bifida ferment lysate has the advantages that: the time for fermenting the pickle is reduced; the pollution due to miscellaneous bacteria is reduced; the fermenting water can be repeatedly utilized; the inoculating rate is reduced; the fermenting cost is reduced; and resource waste and environment pollution are reduced.
Owner:ZHEJIANG GAOSHAN AGRI DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products