59results about How to "Increase concentration difference" patented technology

A technology for synchronously removing N and P from the city sewage features that the composite suspended living things system with active sludge and biomembrane is created in a batch of composite bioreactors, which in running by the sequence of anaerobic, aerobic and anoxic steps. Its advantages are short reaction flow, less consumption of carbon source, high effect and low cost.

The invention provides a solidification method for preparing para-aramid by adopting dry jet-wet spinning. The method is characterized by comprising the following specific steps: extruding a PPTA-H2SO4 spinning solution from a spinneret plate; enabling liquid flow extruded from the spinneret plate to vertically pass through an air layer and feeding to a solidification bath; leading out through a godet wheel, so as to obtain a nascent fiber; and washing, winding and drying, so as to obtain a para-aramid fiber precursor, wherein the solidification bath is sulfuric acid solution and is formed by sulfuric acid and water; the mass fraction of the solidification bath is 2.0%-15.0%; and the temperature of the solidification bath is 1-12 DEG C. The fineness of the fiber can be significantly reduced under the condition of the solidification bath; the strength of the para-aramid fiber is improved; the apparent defects of the fiber can be reduced; and the fiber quality is improved, thus the stability of a spinning process and the quality of a fiber product can be effectively improved.

The invention relates to a process and a device for continuous ultrasound desulfurization of scrapped lead paste. The process for continuous ultrasound desulfurization of scrapped lead paste comprises the following steps: (1) sodium carbonate or ammonium carbonate is selected as desulfurizing agent, and the desulfurizing agent and the scrapped lead paste are taken according to the mole ratio (1.2 to 2.2:1) of the Na iron or the (NH4)2 iron in the desulfurizing agent to the S iron in the scrapped lead paste; (2) the scrapped lead paste, the desulfurizing agent and water are prepared into flowing pulp with solid-liquid (S / L) weight ratio being equal to 3 / 5 to 4 / 5 in a pulping tank; (3) under the condition of ultrasonic wave, the flowing pulp enters a first reaction chamber for heating and stirring from the lower end part in the first reaction chamber, is discharged out from an overflow opening at the upper end of the first reaction chamber, then enters a second reaction chamber for heating and stirring from the lower end part of the second reaction chamber and finally, and is discharged out from a discharging opening at the upper end of an nth (ranging from 3 to 12) reaction chamber after sequent flow for reaction and discharge. The process has the advantages of low cost, small occupied area, continuous production and high efficiency.

The invention discloses a production technology employing a ultrasonic countercurrent extraction process and a membrane separation (molecular sieve) process to acquire two antioxidants from Rosmarinus officinalis L. The production technology comprises adding 30 to 85% of edible alcohol into fresh rosemary branches and leaves, carrying out a ultrasonic counter current extraction process for a mixture of the edible alcohol and the fresh rosemary branches and leaves to obtain an extracted liquid with a solid-to-liquid ratio of from 1:10 to 1:30, and carrying out a membrane separation (molecular sieve) process to separate two antioxidant agents consisting of a rosemary fat-soluble antioxidant agent (comprising carnosic acid as a representative) and a rosemary water-soluble antioxidant agent (comprising rosmarinic acid as a representative) from the extracted liquid, wherein a heating time of the extracted liquid can be reduced through the membrane separation (molecular sieve) process thus a conversion ratio of rosmarinic acid to carnosol is reduced. A content of carnosic acid in the rosemary fat-soluble antioxidant agent is increased through a CO2 supercritical extraction process. The rosemary water-soluble antioxidant agent (comprising rosmarinic acid as a representative) is separated from a liquid obtained through a concentration process under reduced pressure and a solid-liquid separation process, and a content of rosmarinic acid in the rosemary water-soluble antioxidant agent is increased through recrystallization from ethanol. The production technology has the advantages of simple processes, low energy consumption, high production efficiency, production safety, and no harmful residual solvent due to single edible alcohol usage during all production processes.

A nanoparticle with hydrophobic core and hydrophilic surface used for medicine, food, or cosmetics features that it contains hydrophobic polymer block and hydrophilic polymer block. Its preparing process includes such steps as generating the free amino of chitosan under action of trigger, and combining with hydrophilic unsaturated monomer and alkyl acrylata (or methylacrylate) to obtain triblock copolymer.

The invention discloses a method for recycling phosphorus from sewage through bioelectrochemical struvite crystallization. The method aims to solve the problems that in existing recycling of phosphorus from sewage through bioelectrochemical struvite crystallization, an anode liquid is acidized, the overpotential is large, the magnesium source cost is high, and the like. Cheap magnesium ores are subjected to acidolysis in the anode liquid, acidification of the anode liquid is prevented, the overpotential is remarkably reduced, and the magnesium source cost is lowered. According to the method, based on a bichamber microbial electrolysis pool, under an extremely low externally applied voltage (0.3-1.2 V), an electrode reaction is performed to form conditions for acidification of the anode liquid and acidification of a cathode liquid; the crushed magnesium ores are added to an anode chamber, acidification of the anode liquid is prevented, the pH of the anode liquid is stabilized, and microorganisms are promoted to continuously degrade organic matter to generate power; and magnesium ions released through acidolysis of the magnesian cores move to an cathode through a cation exchange membrane under the drive of the electric filed force and has a crystallization reaction with ammonium radials and phosphate radicals under an alkaline condition, struvite deposits are formed, the pH of the cathode liquid is stabilized, and the purposes of removing and recycling the phosphorus from sewage are realized.

The invention relates to a two-stage absorption second-kind lithium bromide absorption heat pump unit with a flash evaporator. The two-stage absorption second-kind lithium bromide absorption heat pump unit comprises a generator (1), a condenser (2), an evaporator (6), an absorber and a solution heat exchanger. The flash evaporator (14) is additionally arranged in the unit, meanwhile, the absorber is divided into a first-stage absorber body (11) and a second-stage absorber body (13), the solution heat exchanger is divided into a high-temperature solution heat exchanger body (12) and a low-temperature solution heat exchanger body (10), the second-stage absorber body (13) and the flash evaporator (14) are located in a same cavity, the first-stage absorber body (11) and the evaporator (6) are located in a same cavity, the generator (1) and the condenser (2) are located in a same cavity, waste heat sources enter the evaporator (6) and the generator (1), solutions circulate in a series connection mode, the concentrated solutions firstly enter the second-stage absorber body (13) to become the middle solutions and then enter the first-stage absorber body (11) to become the dilute solutions, and the dilute solutions enter the generator (1) to be concentrated into the concentrated solutions. According to the two-stage absorption second-kind lithium bromide absorption heat pump unit, middle (low)-temperature waste heat sources are used for driving, and the heat source temperature rise amplitude can be improved under the condition that cooling water is used.

The invention provides an MVR (Mechanical Vapor Recompression) superheated steam sludge continuous drying system and a working method and belongs to the field of energy sources, power and the like. Compared with a traditional sludge drying system, the system is characterized in that a dryer (3) is adopted; superheated steam (31) and sludge to be dried are subjected to direct heat exchange, and a control valve is switched on and off to enable a first feeding device (1), a first pre-heater (2), a second feeding device (20), a second pre-heater (21), a first sludge storage tank (11) and a second sludge storage tank (22) to alternately work, so that negative-pressure continuous operation in the dryer (3) is realized; according to the system provided by the invention, the superheated steam (31) with a relatively strong moisture absorption capability is used as a drying medium under a negative-pressure environment, so that the sludge drying speed is greatly improved; meanwhile, the system only consumes less power consumption of a compressor (7) and a draught fan (10) and latent heat of most steam evaporated from sludge (30) is recycled through a heat exchanger (9); and an efficient and energy-saving sludge drying method is provided.

The present invention relates to the technical field of medicines and particularly to a transdermal gel patch for promoting drugs with low skin absorption ability and a preparation method of the transdermal gel patch. The transdermal gel patch comprises (1) an outward-facing backing layer; (2) a gel layer applied on the backing layer; and (3) a removable anti-adhesion layer; and the gel layer contains nano-drugs or drug-loaded mesoporous silica dispersion drugs. Nano drug crystals reduce drug particle size to a nanometer level, surface area is increased, while the drug-loaded mesoporous silicadispersion mainly increases concentration difference between a preparation and a skin layer by amorphously transforming the drugs to increase infiltration capacity, and higher drug utilization rate for transdermal drug administration can be realized. The prepared gel patch is free of skin irritation, has a function of softening stratum corneum, has suitable peeling strength and rheological properties, further promotes transdermal absorption of the drugs, provides new ideas for development of traditional drugs and provides a reference for an application of a modern preparation technology in atransdermal drug administration system.

The invention relates to an ammonia recovering process and ammonia recovering equipment, namely a method and a device for recovering ammonia from gas from ammonia production plants at a low temperature and isobaric pressure. Several or all coolers of the isobaric ammonia recovering device cool ammonia water and absorb water used by ammonia by using liquid ammonia of which the temperature is lower than that of cooling water. The coolers include a double-travel internal cooler in a bubbling absorber, a coil tube type cooler, an out-tower ammonia water cooler, a demineralized water cooler, a first out-tower small ammonia water cooler, a second out-tower small ammonia water cooler. In the invention, ammonia water is cooled without using cooling water, and power is saved; the cooling area of the out-tower ammonia water coolers and the cooling area of the coolers on all layers of tower plates increase gradually from top down and are allocated according to different ammonia absorbing capacities and different dissolution heat released on all layers of tower plates and the cooler loads on the coolers on the layers of tower plates; and thus, the required cooling area is guaranteed and does not wasted, and the ammonia absorbing capacities on all layers of tower plates are fully played.

The present invention provides a kind of capsule for treating cardiac and cerebral vascular diseases. The capsule has effective component total arasaponin comprising ginsenoside Rg1 10.0-80.0%, ginsenoside Rb1 10.0-87.0% and arasaponin R1 2.0-75.0%. The preparation process includes the following steps: crushing axial root of notoginseng and soaking in ethanol; percolating in ethanol and regulating pH to 5.0-8.0 and stilling; filtering and decompression concentrating to recover ethanol; drying and crushing extractum; adding supplementary material and encapsulating. The capsule is used in treating cardiac and cerebral vascular diseases.

The invention provides a tea extracting solution extraction production line. The tea extracting solution extraction production line comprises a pulverizer, a storage bin, a first-stage countercurrentextractor, a filter press, a second-stage countercurrent extractor and a condensation tank. Two times of countercurrent extraction are adopted; a filter pressing procedure is added between two times of countercurrent extraction, the internal structure tissues of tea leaves are further damaged through extrusion, soluble substance components are more easily permeated and dissolved into a solvent, two units are used for extraction, the concentration difference of the extracting solution is further increased, and the yield of effective components reaches 90% or above.

The invention belongs to the field of energy storage, and particularly relates to a carbon-selenium composite material, a positive pole of a lithium-selenium battery, and an application of the positive pole. The carbon-selenium composite material is of an amorphous crystal phase, has a uniform structure, and consists of hollow porous nano carbon spheres and amorphous selenium distributed in the inner pore channels of the hollow porous nano carbon spheres. In the carbon-selenium composite material provided by the invention, selenium can enter the porous channels of the porous carbon as much aspossible, so that selenium cannot run off from the positive pole in an electrode reaction, so that higher utilization rate and reversibility can be achieved in an electrochemical reaction.

The invention relates to a method for extracting effective component of traditional Chinese medicine, with dynamic overflow continuous reverse-flow method, wherein said method uses several extractors, while each extractor works independently and they use active overflow method, to transfer liquid continuously. Compared with traditional method, the invention improves extracting speed, reduce solvent consumption, reduce following energy consumption and improve efficiency. The invention can reduce extracting temperature, etc. And the invention comprise several pots, heater, condenser, tubes, pump and value which control the active overflow between pots, and the meter element controlling the balance of whole device.

The invention relates to a method for reducing formaldehyde emission quantity of an artificial board through a microwave negative pressure method and belongs to the technical field of formaldehyde reducing of wooden products. The method comprises the following steps that the artificial board is put into an industrial microwave oven; a microwave oven cavity is vacuumized through a vacuum pump or a draught fan, certain negative pressure is kept, and continuous or intermittent microwave treatment is conducted on the artificial board; according to the treatment conditions, the microwave frequency is 2450 MHz or 915 MHz, the microwave treatment temperature is 60+ / -10 DEG C, the treatment time is 40+ / -10 min, and the microwave power is 200+ / -100 W / kg based on the microwave input power of the artificial board of the unit mass. Through the method, the formaldehyde emission quantity of the artificial board can be reduced by 60% to the maximum, and the influence on the main properties of the artificial board is small. In addition, the method is free of pollution, high in efficiency, stable in quality and suitable for industrial production.

The invention provides a method for manufacturing a micro-lens array. The method comprises the following steps of: manufacturing an etching mask pattern on a gallium-series semiconductor substrate, wherein a plurality of circular-hole arrays are distributed on the etching mask pattern, and the circular-hole arrays correspond to a micro-lens array to be manufactured in position and shape; horizontally putting the gallium-series semiconductor substrate with the etching mask pattern into a corrosive solution which can generate Br2 for carrying out corrosion, wherein the solute of the corrosive solution is a reactant capable of generating Br2, and the solvent of the corrosive solution is an auxiliary solvent with a low melting point; and removing the etching mask pattern from the gallium-series semiconductor substrate to form the micro-lens array. According to the method provided by the invention, due to the use of a low-temperature etchant solution, a lateral under-etching effect in a corrosion process is effectively reduced and the transverse dimension of the micro-lens can be effectively restricted.

The present invention provides a kind of capsule for treating cardiac and cerebral vascular diseases. The capsule has effective component total arasaponin comprising ginsenoside Rg1 10.0-80.0%, ginsenoside Rb1 10.0-87.0% and arasaponin R1 2.0-75.0%. The preparation process includes the following steps: crushing axial root of notoginseng and soaking in ethanol; percolating in ethanol and regulating pH to 5.0-8.0 and stilling; filtering and decompression concentrating to recover ethanol; drying and crushing extractum; adding supplementary material and encapsulating. The capsule is used in treating cardiac and cerebral vascular diseases.

The invention relates to the technical field of membrane extraction, and in particular discloses a drainage plate, a membrane extraction assembly, a membrane extraction device and a membrane extraction method. The drainage plate comprises a patterned runner which is distributed on the drainage plate, an inlet, an outlet and a liquid through hole, wherein the patterned runner is in an open form; the inlet and the outlet are communicated with the patterned runner, and the inlet and the outlet are respectively formed in the front side and the back side of the drainage plate; the liquid through hole is not communicated with the patterned runner. When the drainage plate which is ingenious in design is assembled to form the membrane extraction device, two-phase liquids on two sides of a filter membrane simultaneously flow in parallel or along opposite directions, so that the concentration difference between the extraction liquid on each of the two sides of the filter membrane and a stock solution can be further increased on the premise of maintaining the contact area of two phases, and the extraction efficiency can be improved.

The invention relates to an original lighting device, a relative image reader, and an image former with said reader, wherein the original lighting device 31 has fluorescent lamps 2-1 and 2-2 as light source; the fluorescent lamp has the open part 2a that emitting light beam, the reflecting plates 1-1, 1-2 in ellipse shape, to focus the light beams of fluorescent lamps; the open part is incline downwards; the reflective plates are under the fluorescent lamps; the light beams from the open part are focused via the reflective plates to the original reading area; one focus of reflective plate is at the straight line connecting the center of fluorescent lamps and the center of open part, while another focus is near the original reading area, to avoid directly lighting said original lighting part, but only use the light reflected by reflective plates, to avoid lighting the area not needed, to avoid affecting the reflective density of original; therefore, the invention can realize high efficiency and reduce light beams.

The invention provides a heat-pump-driven solution dehumidifying air-conditioning device, comprising a solution dehumidifying component, an air processing system component, a refrigerating component and a heat pump component; the solution dehumidifying component is formed by a solution pump, a heat pump condensing pipe, a one-level solution regenerator and a solution dehumidifying device which are connected; the air processing system component comprises an outdoor blower, an exhaust blower, an exhaust valve, a new blower, a new air valve, a water-air heat exchanger and an air conditioning room; in the refrigerating component, a refrigeration evaporator, a freezing water circulating pump and a freezing water adjusting valve are connected with the water-air heat exchanger to form freezing water circulation; a refrigerating compressor, a refrigerating condenser and a refrigerating throttling valve are connected with the refrigeration evaporator to form refrigerating circulation of a coldwater unit. The heat pump component is formed by a heat pump compressor, a heat pump condenser, a heat pump throttling valve and a heat pump evaporator which are connected, wherein the heat pump evaporator is connected between the refrigerating compressor and the refrigerating condenser. The air-conditioning device improves the heat adsorption temperature of the heat pump evaporator and improves the heating efficiency.

The invention provides a production method of a tea extracting solution. According to the invention, two continuously-arranged countercurrent extractors are used for two-stage countercurrent extraction, and dried tea leaves are subjected to crushing, first-stage extraction, filter pressing and second-stage extraction. According to the invention, two times of countercurrent extraction are adopted,a filter pressing process is added between the two times of countercurrent extraction, and the internal structure tissues of the tea leaves are further damaged by extrusion, so that soluble substancecomponents are easier to permeate and dissolve in a solvent. Two units are used for the extraction, so that the concentration difference of the extracted liquid is further increased, and the yield ofeffective components reaches 90% or above.

The invention relates to a method for reducing formaldehyde emission quantity of an artificial board through a microwave negative pressure method and belongs to the technical field of formaldehyde reducing of wooden products. The method comprises the following steps that the artificial board is put into an industrial microwave oven; a microwave oven cavity is vacuumized through a vacuum pump or a draught fan, certain negative pressure is kept, and continuous or intermittent microwave treatment is conducted on the artificial board; according to the treatment conditions, the microwave frequency is 2450 MHz or 915 MHz, the microwave treatment temperature is 60+ / -10 DEG C, the treatment time is 40+ / -10 min, and the microwave power is 200+ / -100 W / kg based on the microwave input power of the artificial board of the unit mass. Through the method, the formaldehyde emission quantity of the artificial board can be reduced by 60% to the maximum, and the influence on the main properties of the artificial board is small. In addition, the method is free of pollution, high in efficiency, stable in quality and suitable for industrial production.

The invention discloses an apparatus for adsorbing and separating uranium in radioactive wastewater via graphene oxide dispersion liquid. The apparatus comprises hydrophilic pp membrane ultra-filtration columns and power pumps, respectively working as an uranium adsorbing system and an uranium desorption system. The uranium adsorbing system is formed by inside-membrane uranium-contained solution routes and outside-membrane graphene oxide dispersion liquid routes; and the uranium desorption system is formed by inside-membrane eluent routes and inside-membrane uranium-loaded oxidized graphene disperse liquid routes. The apparatus can be simply operated and has low operation cost; countercurrent adsorption / desorption dual-application and continuous production can be achieved; a problem of difficulty of separation of the oxidized graphene and hydrophilic functional oxidized graphene can be solved; and the apparatus can be applied for absorbing and separating uranium in the radioactive wastewater.

The invention belongs to the technical field of medicines, and relates to Ci-hang tablets and a preparation method thereof. The Ci-hang tablets are prepared from traditional Chinese medicines with thefunctions of removing blood stasis, relieving pain, activating the circulation of the blood and regulating menstruation, including motherwort herb and ligusticum chuanxiong, in coordination with Chinese angelica roots with the functions of tonifying the blood, regulating the uterus and enhancing body resistance, so that the medicines synergistically take an effect so as to achieve significant curative effects in the aspects of treating women's dysmenorrhea, lumps in the abdomen, postpartum anemia fainting and persistent lochia. The Ci-hang tablets disclosed by the invention are prepared fromthe following raw materials and auxiliary materials: 300 g of motherwort herb, 200 g of Chinese angelica roots, 150 g of ligusticum chuanxiong, 10-40 g of pressure-dutable starch, and 10-60 g of carboxymethyl starch sodium.

The invention discloses a device and a method for testing water line corrosion resistance of a stainless steel pipe. The device comprises an anode chamber and a cathode chamber which are mutually independent, the bottoms of the anode chamber and the cathode chamber are communicated through a connecting pipe, and a cathode and an anode are respectively arranged in the anode chamber and the cathode chamber for corrosion; different corrosive gases are respectively introduced into the anode chamber and the cathode chamber which are independent from each other, and the corrosion current of the anode chamber and the cathode chamber is monitored by means of a galvanic corrosion module of an electrochemical workstation through a method of increasing the concentration difference of the corrosive gases and adjusting the pH value of simulated liquid, so that the aim of quickly and accurately reproducing stainless steel waterline corrosion is fulfilled; the method is suitable for evaluating and researching waterline corrosion resistance of various stainless steel pipelines for ground gathering and transportation, realizes the aim of separating corrosive gas by isolating a cathode and an anode of waterline corrosion, ensures that an ion path and a sample shape between the cathode and the anode are not limited, can reproduce stainless steel waterline corrosion, and influence factors of waterline corrosion can be researched.

The invention discloses a coating oven. The coating oven comprises an oven cavity used for containing drying objects, an upper cavity which is arranged in the oven cavity and located above the drying objects and a lower cavity which is arranged in the oven cavity and located below the drying objects; the upper cavity comprises a blowing cavity and a ventilation cavity, wherein the blowing cavity and the ventilation cavity are independently arranged, the blowing cavity faces the upper surface of the drying objects, and the ventilation cavity can exhaust gas generated by the drying objects out of the oven cavity, and the lower cavity faces the lower surface of the drying objects. According to the coating oven, through the up and down internal circulation of the oven cavity, air flowing and temperature stability of the surface of the drying objects can be improved, through the ventilation cavity, high-concentration solvent steam obtained through evaporation of the upper surface of the drying objects can be rapidly pumped out, the concentration difference of the solvent steam on the upper surface of the drying objects can be increased, and the drying efficiency is improved.

The invention relates to a two-level second-kind lithium bromide absorption heat pump unit provided with a refrigerant water preheater. The two-level second-kind lithium bromide absorption heat pump unit comprises a generator (1), a condenser (2), an evaporator (6), absorbers and solution heat exchangers, and the unit is additionally provided with a flash evaporator (14) and the refrigerant water preheater (16); meanwhile, the absorbers comprise the first-level absorber (11) and the second-level absorber (13), the solution heat exchangers comprise the high-temperature solution heat exchanger (12) and the low-temperature solution heat exchanger (10), the second-level absorber (13) and the flash evaporator (14) are located in the same cavity, the first-level absorber (11) and the evaporator (6) are located in the same cavity, the generator (1) and the condenser (2) are located in the same cavity, a waste heat source enters the evaporator (6), the generator (1) and the refrigerant water preheater (16), and a solution circulates in a series connection mode. By means of the two-level second-kind lithium bromide absorption heat pump unit provided with the refrigerant water preheater, under the conditions that the medium (low) temperature waste heat source is used for driving and cooling water can be used, the temperature rising amplitude of the heat source is improved.

The invention belongs to the technical field of amphiphilic nanometer materials, in particular to a nanoparticle with a hydrophobic core and a hydrophilic surface, a preparation method and application thereof. The nanoparticles of the present invention contain a hydrophobic polymer block of polyalkyl acrylate or polyalkyl methacrylate and a hydrophilic unsaturated monomer or a polymer modified by the hydrophilic unsaturated monomer. Hydrophilic polymer block of chitosan. It is prepared according to the following steps: under the action of an initiator, the amino group of chitosan is radicalized, and combined with a hydrophilic unsaturated monomer and an alkyl acrylate or an alkyl methacrylate to obtain an amphoteric tri-block copolymer . It can be used in the production of medicines, nutrition and cosmetics. Compared with the prior art, it has the characteristics of good stability and high loading of active ingredients.

The invention discloses a water vapor vacuum rapid drying system and a working method and belongs to the field of energy sources, power and the like. The water vapor vacuum rapid drying system is characterized in that compared with an air drying medium under the same pressure condition, the system takes water vapor (7) with a relatively strong moisture adsorption capability as a drying medium; compared with a normal-pressure operation condition, the concentration difference of moisture inside and outside a material to be dried (9) is increased through vacuum operation in a dryer (1), so that the dehumidifying speed of the material to be dried (9) is easily improved; and furthermore, the system only needs to consume mechanical energy of a compressor (2) and then can be operated, and one part of energy is recycled by adopting an expansion machine (5), so that the whole energy consumption of the system is relatively low and no pollution is caused.

A method for the extraction, purification, and concentration of targeted constituents from a liquid or gas assembled configurable unit operations comprising of an in-situ generation of seeding material for removal of impurities; an extraction process using equipment of predetermined physical geometry; and a membrane concentration method for the recovery of dilute solutions for recycle.