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

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 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 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 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 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 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.