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107results about How to "Increase the precipitation rate" patented technology

Method for preparing 4A zeolite from gangue serving as raw material through two-step hydrothermal synthesis

The invention discloses a method for preparing 4A zeolite from gangue serving as a raw material through two-step hydrothermal synthesis. The method comprises the following steps: firstly, crushing andgrinding gangue, performing thermal activation pretreatment, mixing the gangue subjected to thermal activation and sodium carbonate uniformly, and melting at high temperature to obtain a molten mixture; secondly, mixing the molten mixture and water under the water solution condition to dissolve out sodium silicate, filtering to obtain filter residues and drying the filter residues; thirdly, completely stirring the dried filter residues and a sodium hydroxide solution under the alkali dissolution condition, filtering to obtain a silicon aluminum solution, and ageing the silicon aluminum solution to obtain a precursor; finally, performing hydrothermal crystallization treatment on the precursor, and filtering, water-washing and drying to obtain the 4A zeolite. According to the synthesis method, the gangue serves as the raw material, the gangue is subjected to high-end resource-based development and utilization, and the gangue does not need to be subjected to acid leaching pretreatment, so that secondary pollution on the environment is reduced; and an aluminum source does not need to be added in the synthesis process, so the method is simple, high in operability and low in cost.
Owner:SHAANXI NORMAL UNIV

Bidirectional electroosmosis repairing method of corrosive concrete structure

The invention discloses a bidirectional electroosmosis repairing method of a corrosive concrete structure. The method comprises the following steps of: injecting a corrosion inhibitor into electrolyte; with the steel bar in the concrete as a cathode, paving a stainless steel net on the concrete surface as an anode; immersing the anode into the electrolyte containing the corrosion inhibitor; applying DC (direct current) power between the anode and cathode, and controlling the applied current density to be 1-5A/m<2> based on the total surface area of the steel bar; and cutting off the power 10-20 days later. The method disclosed by the invention is convenient to operate, improves the moving ability of the cationic corrosion inhibitor, and can enable the corrosion inhibitor to enter the steel bar surface through electroosmosis in relatively short time; through the invention, the chloride ions in a concrete protection layer can be effectively removed, and the precipitation rate of chloride ions is high; and moreover, the corrosion potential of the corroded steel bar is increased, the corrosion rate is reduced, re-passivation is realized, the salt-damaged concrete structure is repaired to the greatest degree, and the service life of the structure is prolonged according to the expected requirements.
Owner:GUANGSHA CONSTR GROUP +1

Method for preparing compound amino acid organic liquid fertilizer

The invention provides a method for preparing a compound amino acid organic liquid fertilizer. The method takes cheap fermentation industrial waste water as raw material and carries out filtration, evaporation concentration, primary evaporation crystallization, second evaporation crystallization, cooling crystallization, standing, salting-out and other process steps, thereby obtaining the high-valued and high-fertilizer efficiency compound amino acid organic liquid fertilizer. The method does not occupy high-priced limited soybean meal, blood meal, starch, other acid and basic chemical medicaments and other resources and greatly reduces the product cost; meanwhile, water-insoluble substances produced by filtration during the process can be used as protein supplement feeds for ruminants, sulfate and amino acid organic solid fertilizers are good fertilizers, and the method leads the fermentation industrial waste water to be completely recovered and utilized, has wide range of applications and is not only suitable to be completed on a small-investment evaporator at normal pressure, but also suitable to be completed on an advanced energy-saving consumption-reducing vacuum evaporation crystallization device at negative pressure; furthermore, the method does not emit any substance to the outside and does not produce any pollution.
Owner:昆明隆祥化工有限公司

Intelligent medicine decocting device

The invention discloses an intelligent medicine decocting device which comprises a water inlet pipeline, a medicine soaking barrel, a medicine discharging pipeline, a medicine decocting device body and a medicine outlet pipeline. The input end of the water inlet pipeline is connected with a faucet, and a flow meter and a water inlet valve are arranged in the water inlet pipeline. The output end of the water inlet pipeline is connected with a water inlet in the upper portion of the medicine soaking barrel, and the lower portion of the medicine soaking barrel is connected with one end of the medicine discharging pipeline. A medicine discharging valve is arranged in the medicine discharging pipeline, and the lower end of the medicine discharging pipeline is connected with a medicine inlet in the upper portion of the medicine decocting device body. A medicine outlet of the lower portion of the medicine decocting device body is connected with the medicine discharging pipeline, and the medicine outlet pipeline is provided with a medicine outlet valve. According to the intelligent medicine decocting device, fully-automatic medicine decocting can be achieved, unmanned guard is truly achieved, operation is simple, and the precipitation rate of effective components of traditional Chinese medicine is increased.
Owner:SUZHOU CUIZHI NEW TECH DEV

Method for separating decolorized chilli extract and chili pigments from chilli extract crude product

The present invention discloses a method for separating decolorized chilli extract and chili pigment from a chilli extract crude product, the method comprises the following steps: using an alkaline aqueous solution comprising sodium chloride, sodium acetate, sodium hydroxide and beta-cyclodextrin for leaching the chilli extract crude product in a single-stage continuous counter-current ultrasonic extraction machine, and filtrate separated by filtering is concentrated, extracted with ethanol, separated by chromatography, and concentrated under reduced pressure and the like for separating the decolorized chilli extract and the chili pigment. The method is based on a common solvent method, and combines continuous counter current extraction technology, ultrasound extraction technology, micro-cut interaction technology, and the like, the extraction time is shortened, the solvent use amount is reduced, large-scale industrial production of the decolorized chilli extract can be realized, meanwhile high-quality chili pigment can be separated, recycled and refined, the entire operation process is simple, requirements on reaction conditions and production equipment are low, and the method is a low-consumption high-efficiency chilli extract separation production process suitable for industrial promotion and application.
Owner:广西恒得润辣素有限公司

High salinity wastewater incineration desalting system and treatment method thereof

The invention provides a high salinity wastewater incineration desalting system and a treatment method thereof. The high salinity wastewater incineration desalting system comprises a drying reactor, adesalting device, a secondary combustion chamber, a waste heat recovery device and a purification and emission device; an air outlet pipeline of the drying reactor is connected with the desalting device; an air outlet pipeline of the desalting device is connected with the secondary combustion chamber; an air outlet pipeline of the secondary combustion chamber is connected with the waste heat recovery device; the purification and emission device comprises a smoke exhaust fan; the drying reactor comprises a vertical cylinder body , a high salinity wastewater inlet, a supercharged atomization device, a high temperature flue gas inlet, a salt outlet and an organic gas outlet, wherein the high salinity wastewater inlet is formed in the top end of the vertical cylinder body; the supercharged atomization device is arranged at the inlet; the high temperature flue gas inlet is formed in the vertical cylinder body; the salt outlet is formed in the bottom end of the vertical cylinder body; the organic gas outlet is formed in the side wall, close to the bottom end, of the vertical cylinder body; the high temperature flue gas inlet is formed in the tangential direction of the vertical cylinderbody so that high temperature flue gas forms a spiral downward turbulent flow along the internal wall of the vertical cylinder body; the high temperature flue gas inlet is connected with a heating furnace and a natural gas burning machine; and an oxygen supplementing air inlet is formed in the heating furnace.
Owner:JIANGSU JINNIU ENVIRONMENTAL ENG EQUIP

High-purity ultra-coarse particle ammonium paratungstate and preparation method thereof

The invention discloses high-purity ultra-coarse particle ammonium paratungstate, and relates to the technical field of ammonium paratungstate, the total content of impurities is less than or equal to0.007%, the Fisher particle size is greater than 60 mu m, and the proportion of the Fisher particle size greater than 75 mu m in particle size distribution is greater than 70%; the invention also discloses a preparation method of the high-purity ultra-coarse particle ammonium paratungstate. The method comprises the following steps: by using the ammonium paratungstate solution produced by the extraction technique as the raw material, adding the ammonium paratungstate solution into continuous evaporative crystallization equipment, stirring at 1000-1400 r/min, and carrying out evaporative crystallization while controlling the crystallization temperature at 90-100 DEG C, vacuum degree at 0-10 KPa and steam pressure at 0.1-0.4 MPa. The method has the beneficial effects that a continuous evaporative crystallization method is adopted, the total content of 23 impurity elements required by the national standard of the prepared ammonium paratungstate is smaller than 0.007%, the Fsss particle size is larger than 60 microns, the proportion of the impurity elements larger than 75 microns in particle size distribution exceeds 70%, the apparent density is 2.4-2.6 g/cm < 3 >, and the fluidity issmaller than 35 s/50 g.
Owner:江钨世泰科钨品有限公司

Method and device for crystallizing lead plaster desulphurization by-product sodium sulfate based on localized cooling and rapid crystal precipitation

The invention discloses a method and a device for crystallizing a lead plaster desulphurization by-product sodium sulfate based on localized cooling and rapid crystal precipitation. A sodium sulfate solution is stored in a storage tank, and conveyed to a cooling crystallizer by a circulating pump; because the cooling crystallizer concurrently has the functions of cooling and solid-liquid separation, the sodium sulfate solution in the cooling crystallizer is rapidly deeply cooled to 0-10 DEG C under the action of a refrigerant; sodium sulfate is precipitated out in a sodium sulfate decahydrate crystal form, precipitated crystals are separated out in the cooling crystallizer, a concentrated phase with a solid content of 30-70% enters a centrifuge so as to obtain sodium sulfate decahydrate crystals, and a dilute phase obtained by the centrifuge returns to a production system to be used as system make-up water; and a dilute phase separated by the cooling crystallizer returns to the sodium sulfate solution storage tank, and the refrigerant is also brought into the storage tank, so that the solution in the storage tank is integrally gradually cooled. A localized cooling and rapid crystal precipitation method provided by the invention is high in energy utilization rate, high in product precipitation rate, continuously running, and simple and reliable in system.
Owner:XIANGTAN UNIV +2

Cooling crystallization device of potassium nitrate

The invention provides a cooling crystallization device of potassium nitrate. The cooling crystallization device of potassium nitrate comprises a stirring device, a first stage cuboid filtering cylinder, an evaporative cylinder, a cuboid condensation cylinder, a second stage cuboid filtering cylinder, and a circulating pump; three groups of feed inlet pipes are designed to penetrate the internal side of the bottom of the stirring device, and are communicated with the lower end of a feeding cylinder; a conveying rotating shaft is welded with a spiral conveying blade; the end terminal of a feedoutlet pipe is designed to stretch to the upper end of a filtering drawer in the first stage cuboid filtering cylinder; a conveyor pipe at the output terminal of a delivery pump is designed to stretchinto the evaporative cylinder, and is connected with a plurality of groups of nozzles; the two sides of the internal part of the cuboid condensation cylinder are connected with inclined blocking plates from top to bottom successively, and the inclined blocking plates are arranged in a staggered manner; a back flow pipe at the output terminal of the circulating pump is designed to penetrated intoone end of the internal side of the top of the stirring device far away from the feeding cylinder. In applications, plant ash and nitrate mud are taken as raw materials, the cost is relatively low, sodium chloride crystals can be collected, when a mixed solution flow along the inclined blocking plates, the precipitation rate of potassium nitrate is increased, and the design of the back flow pipe is capable of realizing recycling of potassium nitrate in an obtained filtrate.
Owner:农朝官

Method for extracting perilla anthocyanidin with assisting of micro-cutting interaction technology

The invention discloses a method for extracting perilla anthocyanidin with assisting of a micro-cutting interaction technology. The method comprises the steps that firstly, purple perilla is pretreated, mixing and grinding are carried out through the micro-cutting interaction technology, ethanol extraction is carried out through a single-stage continuous countercurrent ultrasonic extracting machine, samples are arranged on a resin chromatographic column, eluant drying is carried out, and anthocyanin is obtained. Compared with the prior art, the method has the advantages that the micro-cutting interaction technology is adopted to assist anthocyanidin extraction, in an ultramicro-pulverized powder state, the solubility of the anthocyanidin in an ethanol solution can be effectively improved, and the exhalation rate of the anthocyanidin is further improved; in the anthocyanidin ethanol extraction process, under the effect of ultrasonic waves, the continuous countercurrent extraction technology is adopted in an auxiliary mode, the permeation dissolution and diffusion speed in the anthocyanidin extraction process can be accelerated, the extraction time is shortened, the usage amount of a solvent can be reduced, and the anthocyanidin extraction method is high in efficiency and low in consumption.
Owner:唐翔

Mobile small electroplating wastewater treatment device

The invention discloses a mobile small electroplating wastewater treatment device which comprises a machine body shell and a wall body, the interior of the machine body shell is divided into a mixed precipitation chamber and a purification chamber by the wall body, and a barrier plate is vertically arranged on the inner top wall of the mixed precipitation chamber; a large-particle filter screen is obliquely arranged between one side wall of the baffle plate and the side wall of the mixed precipitation chamber, and a molecular sieve is arranged between the other side wall of the baffle plate and the side wall of the mixed precipitation chamber; one side of the upper end of the mixing and settling chamber is communicated with a sewage inlet, an arc-shaped medicament box is arranged under the sewage inlet, one side of the outer wall of the arc-shaped medicament box is communicated with a medicament inlet pipe, and the medicament inlet pipe penetrates through the side wall of the machine body shell and extends outwards. The device overcomes the defects in the prior art, is reasonable in design, effectively improves the precipitation rate of heavy metals and cyanides in electroplating wastewater, is convenient and rapid to move, is suitable for being used in multiple occasions, is higher in practicability, and has higher social use value and application prospect.
Owner:安徽清荷环保有限公司
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