37results about How to "Short concentration time" patented technology

The invention relates to a total-tailings paste filling and stockpiling combined treatment method based on a deep-cone thickener. A combined treatment system is composed of a one-stage or multi-stage pump station, the deep-cone thickener and a two-segment horizontal stirring device. The deep-cone thickener is arranged near the multi-stage pump station. A continuous feeding and discharging mode is adopted for achieving the continuous concentration process, and the two functions of filling and tailings stockpiling are both taken into consideration. In the running process of a filling system, total tailings of a concentration plant are completely thrown into the deep-cone thickener through the one-stage or multi-stage pump station. When filling is needed, deep-cone bottom flow is pumped to the two-segment stirrer through a mortar pump and is mixed with cement, and qualified paste is prepared and flows to or is pumped to a stope. When filling is not needed, the bottom flow is pumped by a plunger pump to a tailings pond by means of the pump station, and stockpiling of paste is performed. The method can well solve the filling problem of a gob and the stockpiling problem of tailings at the same time, filling cost is greatly reduced, the strength of filling bodies is improved, discharge of the tailings is reduced to the maximum extent, and meanwhile tailings paste is discharged.

The invention provides a sludge concentration method and a filtering separation device thereof. The concentration method comprises the following steps of: performing filtering separation on primary sedimentation sludge or remained active sludge in a secondary sedimentation tank or mixed sludge of the primary sedimentation sludge and the remained active sludge in the filtering separation device and by tubular filter cores to obtain concentrated sludge, and discharging the filtered clear solution; putting the concentrated sludge on a filter press for press filter dewatering; and obtaining a sludge cake and transferring the sludge cake. The filtering separation device comprises a cylinder, tubular filter cores vertically distributed in the cylinder, a fixing plate, a water collection tank, a sludge inlet arranged on the cylinder, a sludge collection zone, a sludge discharge channel provided with a valve and the like. The sludge concentration method and the filtering separation device have the advantages of low water content in the concentrated sludge, short concentration time, small floor areas, small device volume, low investment cost, low operating cost and long service life of the filter cores due to the use of back wash filter cores.

The invention discloses a method for reinforcing alkaline fermentation and acidogenesis of excess sludge by straws. The method mainly comprises the following steps of pretreating the straws, pretreating the excess sludge, jointly fermenting the straws and the sludge, and removing the nitrogen and phosphor from fermenting liquid, wherein the straws are pretreated into a proper outer carbon source, and the excess sludge is pretreated by soaking liquid. The method has the advantages that compared with simple pure alkaline liquid, the concentration of the soaking liquid is higher; the concentration difference is formed between the inside and outside of sludge cells, and the plasmolysis of the sludge cells is caused, so that under the simultaneous action, the sludge treatment time is shortened, the carbon and nitrogen ratio of a straw-sludge fermenting system is adjusted, the hydrolysis of the excess sludge is enhanced, the efficiency of anaerobic fermentation and acidogenesis is promoted, the economic feasibility of the anaerobic fermentation technology of the sludge is improved, and the problem of low acidogenesis efficiency due to insufficient content of organic matters in the excess sludge is solved.

Disclosed is a method for producing high-purity lithium carbonate. The method includes: removing magnesium and boron from a brine; separating and removing the remaining magnesium and calcium; concentrating the resulting brine by spray drying to form a powder; washing the powder to concentrate lithium; and carbonating the lithium ions with sodium carbonate (Na2CO3).

The invention relates to a sludge treatment technology, especially relates to a municipal domestic sludge air flotation concentrating treatment device and a method thereof, and belongs to the technical field of wastewater waste gas treatment. The municipal domestic sludge air flotation concentrating treatment device comprises a sludge conditioning unit for performing quantitative dosing, mixing and reacting, and a cavitation air floatation concentrating unit for dissolving air in sludge and completing separation; and an air floating head for cavitating the dissolved air is arranged in the cavitation air floatation concentrating unit, the air floating head is connected with a hollow rotating shaft, the air floating head includes a central disk communicated with the rotating shaft and a plurality of dissolved air branch tubes arranged at the side part of the central disk, and the dissolved air branch tubes have a plurality of micro-pores for ventilation. The device has the advantages oflarge single-machine processing capability, short concentrating time, simplicity, electricity consumption saving, and adjustable reflux ratio, and effectively solves the problems of large occupied area, sludge digestion, phosphorus release reaction and large and completed device in the municipal domestic sludge air flotation concentrating treatment process.

The invention belongs to the technical field of drug synthesis and particularly relates to a glycyl-L-glutamine preparation method. According to the glycyl-L-glutamine preparation method provided by the invention, a crude product of the glycyl-L-glutamine is prepared by introducing ammonia gas into the glycyl-L-glutamine and conducting ammonolysis under pressure, and then refining is conducted to obtain a pure product of the glycyl-L-glutamine. The glycyl-L-glutamine is taken as the raw material and is dissolved with water whose amount is 5 times that of the raw material, the ammonia gas is introduced, the ammonolysis is conducted under pressure, the reaction time is only 5h and is short, no ammonium salt is introduced in the reaction process, the volume of a solvent to be evaporated is small, the concentration time is short, and the preparation method is convenient to operate and is suitable for industrial production. The purity of the prepared glycyl-L-glutamine is not less than 99.3%.

The invention relates to a method for concentrating hirudin in fermentation broth and belongs to the technical field of biological medicines. The method comprises the steps of adding reversed-phase chromatography filler in hirudin fermentation broth for adsorption, performing eluting adsorption precipitation, and collecting effluent, namely hirudin concentrated solution, wherein the reversed-phase chromatography filler is formed by bonding hydrophobic groups to the surface of silica gel substrate. The whole process of adsorption and elution is simple to operate, a purification effect is also achieved while concentration is performed, and the hirudin egg white recovery rate is 70% or above.

The invention relates to a method and a device for continuously concentrating glyoxylic acid. A glyoxylic acid solution is concentrated by adopting a method of continuously adding a stock solution and extracting a concentrated solution. The method comprises the following steps: a switch-on vacuum debugging process, an early feeding concentration stabilizing process, a continuous feeding and extraction adjusting process, a normal continuous concentration process, a distillate intermittent transfer process and a concentration ending halt process. The device comprises an evaporator, a heater, a demister, a condenser, a receiving tank, a buffer tank, a scrubber tank, a high vacuum unit, a stock solution container, a concentrated solution container, a distillate container, an extracting pump, a distillate delivery pump, a stock solution feeding flow meter, a concentrated solution extraction flow meter and the like. The method and the device can realize continuous production of concentrated glyoxylic acid, the concentration efficiency is high, the equipment capacity can be obviously improved, the materials are short in heating time and low in temperature, the product is high in quality, high in yield and low in energy consumption, the service life of glassed steel equipment can be prolonged, and the labor intensity of workers is reduced.

The invention discloses a preparation method of Lproline, and the method comprises the following steps: 1, filtering proline fermentation liquor through a filter membrane to obtain ultrafiltration filtrate, and cleaning with pure water to obtain microfiltration filtrate; 2, enabling the micro-filtration clear liquid to sequentially pass through weakly-alkaline anion resin and weakly-acidic cation resin, and performing filtering to obtain filtrate; 3, adding activated carbon into the filtrate for decolorization, and performing filtering to obtain a decolorized solution containing proline; 4, evaporating and concentrating the decolorized solution to obtain a concentrated solution, wherein the content of the concentrated solution is 45-50%; 5, cooling the concentrated solution to 10 DEG C, performing natural crystallizing, and performing centrifuging to obtain wet crystals; 6, putting the wet crystals into a vacuum drying machine for drying to obtain a finished product of Lproline. The method for preparing the Lproline is relatively simple in process control, does not generate a large amount of pollutants in the production process, and is environment-friendly.

The invention discloses a preparation method of a semen armeniacae amarae and thunberg fritillary bulb oral liquid for relieving cough and resolving phlegm. The preparation method is characterized by comprising the following steps of: jointly decocting sweet root bark of white mulberry, fried semen armeniacae amarae, thunberg fritillary bulb and liquorice to reserve an extracting liquid, obtaining clear paste through three-effect decompression concentration, sinking the clear paste by water and centrifugalizing and reserving a clear liquid; independently decocting sweet polygala tenuifolia, independently storing the extracting liquid, and combining the extracting liquid with the clear liquid; adjusting the pH twice when the volume is fixed and before filling; sterilizing for 40 minutes at 103 DEG C and filling. The preparation method disclosed by the invention has the beneficial effects that 1, the polygala tenuifolia is independently decocted to avoid the problem that the polygala tenuifolia is bubbled to lead to loss of effective components when the extracting liquid is concentrated; 2, three-effect decompression concentration is adopted, so that not only can the concentration temperature be low, the moisture is quick to evaporate, the concentration time is short and the energy consumption is reduced, but also the effective components of the product are effectively prevented from being damaged by high temperature foremost; 3, the pH value is adjusted twice to ensure the stability of product quality; 4, insulative overnight aging at 70-80 DEG C can be used for effectively preventing the liquid medicine from rancidity; 5, the oral liquid is sterilized for 40 minutes at 103 DEG C, and the temperature is moderate, so that the effective components of the liquid medicine are effectively protected.

The invention belongs to the field of medicine preparation, and particularly discloses a preparation method for a condensed pill of traditional Chinese medicines. The preparation method comprises thefollowing steps: preparing particles from a part of a medicinal material extract and fine medicinal material powder, carrying out pressing to from a pill mold, adopting the pill mold as a base pill, and rounding the remaining prescription amounts of the medicinal material extract and the fine medicinal material powder and a proper amount of an excipient to form the pill. According to the preparation method disclosed by the invention, effective components can be reserved to the greatest extent; the preparation method well solves problems in proportioning stability of the extract and the medicinal powder; prepared condensed pills are small in pill weight difference, accurate in dosage, shortened in dissolution and dispersion time limit, good in absorption, stable and controllable in qualityand improved in curative effect; a production period is shortened; process is simple; a production environmental is good in sanitation condition; labor intensity is reduced; various quality indexes are obviously improved; and good social and economic benefits are obtained.

The invention discloses a preparation method for high-purity polyene phosphatidylcholine. According to the method, high-purity polyene phosphatidylcholine is prepared by subjecting soyabean lecithin powder to adsorption by neutral alumina and silica gel respectively. Polyene phosphatidylcholine prepared by using the method is low in peroxide value and high in purity; the preparation method is simple in process operation and beneficial for industrial production; and the purity and the content of polyene phosphatidylcholine can reach 98% or more and 95% or more, respectively, and all the relatedsubstances are qualified.

The invention provides full-automatic sewage concentration treatment equipment. A pre-separation stirring tank, magnetic recovery equipment, a magnetic powder adding system and a sedimentation tank with brand-new structures are provided, the magnetic powder recovery rate is high, the full-automatic sewage concentration treatment equipment occupies a small area, is suitable for new construction, especially for reconstruction of old water plants with tense sites, and is low in overall investment and construction cost; traditional reinforced concrete structures such as a concentration tank and a sludge storage tank are replaced, the automation degree is high, debugging and operation are simple and reliable, and unattended operation can be achieved. The full-automatic sewage concentration treatment equipment is short in sewage concentration time, the desliming efficiency of the desliming machine is greatly improved, and the low water content of discharged sludge is ensured. The equipment has the characteristics of stable and reliable operation, simple operation, small occupied area, high sewage concentration efficiency, large water treatment amount and low operation cost according to the current treatment situation of the sewage of the waterworks.

The invention provides a continuous extract thickening machine, which comprises a jacket heater. A feed pump is connected to the inlet of the jacket heater. The outlet of the jacket heater is connected to a heating chamber. The heating chamber is connected to an evaporating chamber. The evaporating chamber is arranged above a product receiving tank. A buffer tank is provided with an upper opening, a middle opening and a bottom opening. The upper opening of the buffer tank is connected to the inlet of a vacuum pump. The outlet of the vacuum pump is connected to a vacuum buffer tank. The middle opening of the buffer tank is connected to the lower opening of a condenser. The upper opening of the condenser is connected to a steam-liquid separator. The steam-liquid separator is connected to the upper opening of the evaporating chamber. The bottom opening of the buffer tank is connected to a vortex pump. The invention also provides a work method and a cleaning method of the continuous extract thickening machine. The continuous extract thickening machine can improve the product density and shorten the concentration time, at the same time, the energy consumption is little, and the cost is low. Furthermore, the continuous extract thickening machine can carry out concentration continuously, the work efficiency is largely improved, automatic online cleaning can be performed automatically, no dead angle exists in the machine, and the products will not be polluted by different products.

The invention discloses a method for preparing an L-citrulline crude product and L-citrulline prepared through the method. The method for preparing the L-citrulline crude product includes the steps of preparing L-citrulline liquid, preparing the L-citrulline crude product from the L-citrulline liquid, refining the crude product, and obtaining an L-citrulline finished product. When the method is used for producing the L-citrulline crude product, no ethyl alcohol is used, so the method has the advantages that production conditions are mild, concentration time is short, product purity is high, yield is high and production cost is low.

The invention discloses a method for preparing an L-citrulline crude product and L-citrulline prepared through the method. The method for preparing the L-citrulline crude product includes the steps of preparing L-citrulline liquid, preparing the L-citrulline crude product from the L-citrulline liquid, refining the crude product, and obtaining an L-citrulline finished product. When the method is used for producing the L-citrulline crude product, no ethyl alcohol is used, so the method has the advantages that production conditions are mild, concentration time is short, product purity is high, yield is high and production cost is low.

The invention discloses a method for detecting the residual quantity of total matrine in honey. The method comprises the following steps: pre-treating a sample, purifying the sample, and preparing and detecting a matrix calibration solution. The sample is alkalized by adopting ammonia water, so that the sample can be well purified, the sample concentration time is short, and the method is simple, convenient and rapid; the detection method can well meet the requirement of daily quality monitoring of the total matrine (matrine and oxymatrine) residual quantity in the honey.

The invention provides a method for retreating wastewater after pueraria starch processing. The method particularly includes: collecting wastewater after pueraria starch extraction; adopting a concentration unit to heat for concentration and water volatilization to obtain puerarin size of 30-40% in water content; lyophilizing, and smashing to obtain puerarin. The concentration unit is adopted to heat for concentration and water volatilization, so that the wastewater after pueraria starch processing can be concentrated into the puerarin size of 30-40% in water content in one step, and convenience is brought to subsequently drying and smashing the puerarin size to obtain puerarin.

The invention provides a method for extracting an old medicine orange spice, which comprises the following steps of: separating an old medicine orange primary extracting solution by using a microfiltration membrane and an ultrafiltration membrane to obtain an old medicine orange concentrated solution, then adding glyceryl triacetate, and carrying out ultrasonic extraction, standing, settling and layering to obtain the old medicine orange spice. The obtained old medicine orange spice has the style characteristics of unique fruity flavor, orange peel fragrance, fresh and sweet taste, sweet aftertaste and the like, in the conventional heating cigarette filter tip forming process, the obtained old medicine orange spice is added into filter tip tows, during cigarette smoking, throat stimulation can be improved, the oral cavity moist feeling, the salivation promoting feeling and the comfort feeling can be improved, and the cigarette filter tip forming effect can be improved. The effect of improving the smoking quality of the heated cigarette is achieved. The extraction method of the old medicine orange spice provided by the invention is simple in process, short in period, environment-friendly, safe, wide in application range and convenient for large-scale and industrial production, and has relatively high economic benefits.

The invention discloses a preparation method of a cold heat-clearing tablet. The preparation method comprises the following steps: (1) weighing raw materials; (2) taking schizonepeta spike, mint and perilla leaf, adding water which is 8-12 times of the mass of the three traditional Chinese medicines, distilling to extract volatile oil for 1.0-2.0 hours, and collecting the distilled water solution in another container; adding water into decoction dregs and other medicines, decocting twice, adding water which is 8-12 times of the mass of all the traditional Chinese medicines in the step (1) for the first time, decocting for 1.0-2.0 hours, and filtering to obtain filtrate; after filtering, adding water which is 6-10 times of the mass of all the traditional Chinese medicines in the step (1) into filter residues, decocting for 1.0-2.0 hours, and filtering to obtain filtrate; combining the two filtrates with the distilled aqueous solution; and (3) combining the decoctions, concentrating under reduced pressure, adding auxiliary materials, granulating, spraying the volatile oil in the step (2), and pressing into tablets, or coating with a film coating or a sugar coating to obtain the cold and heat clearing tablets. The method is low in extraction temperature, low in energy consumption, short in extraction time, small in heat-sensitive component loss and high in effective component recovery rate.

The invention relates to a method for concentrating hirudin in fermentation broth and belongs to the technical field of biological medicines. The method comprises the steps of adding reversed-phase chromatography filler in hirudin fermentation broth for adsorption, performing eluting adsorption precipitation, and collecting effluent, namely hirudin concentrated solution, wherein the reversed-phase chromatography filler is formed by bonding hydrophobic groups to the surface of silica gel substrate. The whole process of adsorption and elution is simple to operate, a purification effect is also achieved while concentration is performed, and the hirudin egg white recovery rate is 70% or above.

The invention relates to a sludge magnetic concentration dewatering system which comprises an automatic agent dissolving and adding device, an agent adding metering pump and a magnetic seed agent dissolving box, and further comprises a magnetic seed feeding device, a sludge lifting pump, a condensation precipitation pool, a sludge screw pump, a magnetic drum, a stacked-screw sludge dewatering machine, a sludge spiral conveyor and a sludge collection bucket which are connected sequentially. The condensation precipitation pool, the automatic agent dissolving and adding device, the agent adding metering device and the stacked-screw sludge dewatering machine are connected sequentially, and the condensation precipitation pool, the magnetic seed feeding device, the magnetic seed agent dissolving box and the magnetic drum are connected sequentially. The sludge magnetic concentration dewatering system is high in sludge condensation speed, short in condensation time, good in condensation effect and high in automation level; intelligent control is adopted, so that the system can be remotely monitored and operated on wireless terminal equipment; the system is provided with an automatic alarming device, can immediately send a message reminding that handling is needed when a failure occurs or PAM powder needs to be supplemented and give an on-site alarm to remind on-site working personnel to handle and is safe and reliable.

The invention discloses a preparation method of a cold heat-clearing tablet. The preparation method comprises the following steps: (1) weighing raw materials; (2) preparing three traditional Chinese medicines of schizonepeta spikes, mint and perilla leaves, adding water which is 8-12 times of mass of weights of the traditional Chinese medicines, distilling to extract volatile oil for 1.0-2.0 hours, and collecting a distilled water solution; adding water into decoction residues and other medicines, and carrying out decoction twice, namely adding water which is 8-12 times of mass of the all traditional Chinese medicines, carrying out decoction for 1.0-2.0 hours, and filtering, so as to obtain a filtrate; adding water which is 6-10 times of mass of the all traditional Chinese medicines into the filtered decoction residues, carrying out decoction for 1.0-2.0 hours, and filtering, so as to obtain a filtrate; combining two filtrates with the distilled solution; and (3) combining decoction solutions, carrying out reduced pressure concentration, adding auxiliary materials, carrying out granulation, spraying the volatile oil obtained in the step (2), and carrying out tabletting, so as to form a base tablet, or a coated film or a sugar coating, namely the cold heat-clearing tablet. The preparation method has the beneficial effects that the extraction temperature is low, the energy consumption is low, the extraction time is short, the loss of temperature-sensitive components is low, and the recovery rate of effective components is high.