Abstract: The invention relates to a process and apparatus of extraction with the use of vacuum and can be used to extract the bioactive agents from raw materials. The method of extraction of materials, includes the heating the extractant, the preliminary extraction of raw materials with the heated rollers by means of extractant, the impregnation of raw material with extractant and extraction of raw materials in vacuum-impulsive mode by cycles, which include the heating with hot coolant gas not exceeding 39° C. and a creation of vacuum in the chamber in the regime of quick vacuum-impulsive exposure with stepwise multiple pressure drop from the atmospheric pressure to the pressure not more 0.0001 MPa, followed by keeping under vacuum to stabilize the temperature of the mixture and the vacuum relief at the end of the cycle. The distilled water, or organic solvents or mixtures thereof are used as the extractants.

Abstract: The present invention relates to the vacuum drying of capillary porous bulk materials. The method involves preheating of the material, its loading into the vacuum drying chamber having heating elements followed by cycle-by-cycling heating of the material and vacuum creation in the rapid vacuum impulse action mode with stage-by-stage single or multiple reduction of pressure in the range from 0.1 MPa to 0.0001 MPa followed by the exposure to vacuum unless the material temperature is stabilized. Said cycles are repeated unless the required material moisture is achieved. Cooling of the material is performed in the same drying chamber by alternating cooling in spouted bed and vacuum impulse action. The device comprises two vacuum chambers cone-shaped at their bases with heaters mounted inside them, material loading/unloading system, one or several receivers with pumps connected in parallel to them and connected via vacuum pipeline system with quick-acting valves to the drying chamber inlet.

Abstract: The invention can be used for extraction of valuable biologically active agents from raw materials. The method of extraction comprises treating the raw materials by preliminary extraction with the extracting agent heated to the temperature not allowing denaturation of raw materials and the final product. The extracting agent is either distilled water or watered alcohol to carry out both the impregnation of raw material with the extracting agent and extraction in vacuum-impulsive mode in the extractor, to carry out catching of extract essential oils. The device for extraction comprises a screw dozer and continuous heated rolls with a vessel to receive press cake impregnated with the extracting agent, two parallel extractors, pipelines connected to a reflux condenser, a foam-destroying device, and vessels to store and prepare the extracting agent and the extract interconnected filters and condensers, additionally connected with a receiver which is equipped with a vacuum pump and pipelines.

Abstract: The invention relates to the agricultural industry, specifically to the processing of organic waste materials (livestock and poultry farming waste, domestic and industrial waste water, straw, peat and other organic substances) to produce organomineral fertilizers in granulated form. The method for producing a granulated organomineral fertilizer from organic waste materials comprises feeding the mixture components, removing mechanical impurities, mixing with the addition of mineral components, grinding, decontaminating, homogenizing, granulating and drying. The grinding, decontamination, homogenization and granulation processes are performed simultaneously on continuously operating heated rollers with the mass to be processed being passed through shaping rings of the rollers and with cutting to form granules. The granules are dried to a set moisture content in a continuously operating heated vacuum dryer operating in pulsed vacuum modes.

Abstract: The present invention relates to methods for recovering rare earth elements, in particular, from phosphogypsum. The claimed method comprises acidic extraction of rare earth elements from phosphogypsum using sulfuric acid-nitric acid mixture solution at 3.2-1.2 ratio with concentration of 1-3% by weight and at liquids-solids ratio of 4-5 within 8-12 minutes with simultaneous hydroacoustic action on the extraction suspension agent being mixed succeeded by separation of insoluble gypsum from extraction suspension agent and by recovery of rare earth elements from extraction solution using cation-exchange sorption by passing the latter through cation-exchange filter. The claimed method allows both to increase the recovery rate of rare earth elements and to reduce by half the time of the process accomplished at lower concentrations and with smaller volumes of acidic reagents.

Abstract: The invention relates to a technique of disinfecting household and industrial waste water used as the basis of organo-mineral fertilizers. The present method of disinfection is carried out by means of quick vacuum-pulse actions on sewage sludge using a receiver and quick response valves, with a pulse duration of less than 1.0 seconds at a pressure of not more than 20 mmHg to achieve the required degree of disinfection. Technical result of the use of the invention is to accelerate and simplify the process of disinfection method.

Abstract: The invention relates to a process and apparatus of extraction with the use of vacuum and can be used to extract the bioactive agents from raw materials. The method of extraction of materials, includes the heating the extractant, the preliminary extraction of raw materials with the heated rollers by means of extractant, the impregnation of raw material with extractant and extraction of raw materials in vacuum-impulsive mode by cycles, which include the heating with hot coolant gas not exceeding 39° C. and a creation of vacuum in the chamber in the regime of quick vacuum-impulsive exposure with stepwise multiple pressure drop from the atmospheric pressure to the pressure not more 0.0001 MPa, followed by keeping under vacuum to stabilize the temperature of the mixture and the vacuum relief at the end of the cycle.

Abstract: The invention relates to a technique of disinfecting household and industrial waste water used as the basis of organo-mineral fertilizers. The present method of disinfection is carried out by means of quick vacuum-pulse actions on sewage sludge using a receiver and quick response valves, with a pulse duration of less than 1.0 seconds at a pressure of not more than 20 mmHg to achieve the required degree of disinfection. Technical result of the use of the invention is to accelerate and simplify the process of disinfection method.

Abstract: The present invention relates to the vacuum drying of capillary porous bulk materials. The method involves preheating of the material, its loading into the vacuum drying chamber having heating elements followed by cycle-by-cycling heating of the material and vacuum creation in the rapid vacuum impulse action mode with stage-by-stage single or multiple reduction of pressure in the range from 0.1 MPa to 0.0001 MPa followed by the exposure to vacuum unless the material temperature is stabilized. Said cycles axe repeated unless the required material moisture is achieved. Cooling of the material is performed in the same drying chamber by alternating cooling in spouted bed and vacuum impulse action. The device comprises two vacuum chambers cone-shaped at their bases with heaters mounted inside them, material loading/unloading system, one or several receivers with pumps connected in parallel to them and connected via vacuum pipeline system with quick-acting valves to the drying chamber inlet.

Abstract: The present invention relates to methods for recovering rare earth elements, in particular, from phosphogypsum. The claimed method comprises acidic extraction of rare earth elements from phosphogypsum using sulfuric acid-nitric acid mixture solution at 3.2-1.2 ratio with concentration of 1-3% by weight and at liquids-solids ratio of 4-5 within 8-12 minutes with simultaneous hydroacoustic action on the extraction suspension agent being mixed succeeded by separation of insoluble gypsum from extraction suspension agent and by recovery of rare earth elements from extraction solution using cation-exchange sorption by passing the latter through cation-exchange filter. The claimed method allows both to increase the recovery rate of rare earth elements and to reduce by half the time of the process accomplished at lower concentrations and with smaller volumes of acidic reagents.

Abstract: The invention relates to the methods and the plant for manufacturing transformer windings. The method includes heating varnish up and degassing, vacuum treatment of a device, impregnation with varnish, drying thereof under cyclic quick vacuum treatment and subsequent vacuum relief to atmospheric pressure. During the drying process, pulse vacuum treatment is performed after preheating the device. Heating and impregnation of devices are performed at the temperature of not more than 50° C. and the pressure of at least 13 KPa. The plant used to implement the method includes heated vacuum plants, connected to the receiver, a pump, atmosphere and an air heating unit to the heat recovery heat exchanger and to the condensing heat exchanger. A condensing heat exchanger is also installed downstream the vacuum pump connected to the receiver.

Abstract: The present invention relates to agriculture and, in particular, to the methods used for producing mineral organic fertilizer mixtures based on wastewater sludges. The claimed method involves mixing of wastewater sludges with the detoxicant—highly dispersed sodium humate with particles not larger than 100 ?m and in quantity of not less than 10% of the sludge mass. The invention allows to improve application efficiency of wastewater sludges as fertilizers due to the reduction of heavy metals contained in the sludges.

Abstract: The invention can be used for extraction of valuable biologically active agents from vegetable, animal, fish, seafood, and other raw materials. The method of extraction comprises treating the raw materials by preliminary extraction with the extracting agent heated to the temperature not allowing denaturation of raw materials and the final product. The extracting agent is either distilled water or watered alcohol of concentration not less than 20% and ratio not more than 2, to carry out both the impregnation of raw material with the extracting agent and extraction in vacuum-impulsive mode in the extractor, to carry out catching of extract essential oils followed by condensation in dedicated condensers.

Abstract: The invention relates to method and device for drying materials of plant and animal origin. The method includes heating a material to a temperature that does not cause denaturation of the original properties thereof, high-speed pulse vacuuming, maintaining the vacuum tor a period of time, and relieving the vacuum until atmospheric pressure is reached. The material is heated in a drying chamber and the vacuum is relieved using a dried air or gas heat earner with a temperature of up to 300° C. A device comprises two drying chambers with hermetically sealing doors, which are connected by pipes haying fast-acting valves to a receiver tank, heat exchangers and condensate receivers, a vacuum pump and a device for heating and delivering a heat carrier, which is situated in a separate thermally insulated chamber and is connected to the inlet of each drying chamber by means of thermally insulated air delivery conduits with valves.

Abstract: The method of timber drying including the blowing of timber with heating medium operation at atmospheric pressure and heating the timber to average volume temperature 80-100° C., impulsive (quick) vacuum treatment operation at pressure not more than 50 mm Hg during time not more than 10 s with pressing-out of free moisture from timber without water to vapour transition to reach stable constant value of limber temperature, vacuum relief to atmospheric pressure using heat recuperating air with temperature 150-300° C., and at manometer pressure not more than 0.07 MPa. The apparatus for timber drying comprises two drying chambers connected through pipelines with quick-response valves to cooled receiver, which is placed in series to the second one and connected to vacuum pump through pipeline with vacuum lock. The first receiver is equipped with spiral-shaped guide devices for vapour-and-drop flow direction, which are installed at a tangent to inner diameter of receiver body.