63results about How to "Small specific volume" patented technology

The invention discloses a preparation method for a clindamycin phosphate powder injection raw medicine which comprises the steps: (a) purification is carried out on a crude product of clindamycin phosphate; (b) crystallization and crystal growth are carried out on filter liquor after the filter liquor is arranged in a crystallization tank; (c) centrifugal separation and washing are carred on crystallization liquor; (d) fast temperature raising and drying are carried out on a clindamycin phosphate wet finished product. The preparation method for the clindamycin phosphate powder injection raw medicine has the advantages of favorable water solubility, uniform crystal form particles, small specific volume, big bulk density, low solvent residue, and the like. The method also simplifies the process operation, and dramatically enhances the product yield.

Provided is a reciprocating compressor. The reciprocating compressor includes a cylinder having a compression space, a piston inserted into the cylinder to define the compression space while being reciprocated, the piston having a suction passage to communicate with the compression space, a gas bearing having a bearing hole passing through the cylinder so that a refrigerant gas is injected between the cylinder and the piston to support the piston with respect to the cylinder, and a flow resistance part disposed on an outer circumferential surface of the cylinder or one side of the cylinder to restrict a flow of the refrigerant gas flowing toward the bearing hole.

The invention relates to a Brayton-cascade steam Rankine combined cycle power generation system. The gas exhaust of a Brayton cycle is adopted as a heat source for a high-temperature end steam Rankine cycle, a steam condenser in a high-pressure end steam Rankine cycle is adopted as one of heat sources for a low-pressure end steam Rankine cycle, the latent heat of vaporization of the steam in the high-pressure end steam Rankine cycle is efficiently recovered to be used for power generation in the low-pressure end steam Rankine cycle, consequently, the load of the steam condenser of the conventional steam Rankine cycle system can be effectively reduced by more than absolute 20 percent, and by adopting a system optimization technique, the absolute thermal efficiency of the cycles of the whole system can be increased by more than 5 percent. The Brayton-cascade steam Rankine combined cycle power generation system not only can be used in the energy-saving alteration of conventional units, but also can be used in the design and construction of new units, and economic, social and environmental protection benefits are remarkable.

The invention relates to a low-grade smoke organic rankine cycle waste heat generating system of a heating furnace in a steel rolling plate plant, wherein air, a coal gas heat exchanger and a working medium evaporation chamber are in the heating furnace; the working medium evaporation chamber is filled with normal pentane and is provided with a working medium tubular evaporator; a steam outlet of the working medium evaporator is connected with a steam inlet of a steam turbine generator set through a pipeline; the steam outlet of the steam turbine generator set is connected with a steam inlet of a fixed tube-plate type heat exchanging condenser through a pipeline; a liquid outlet of the fixed tube-plate type heat exchanging condenser is connected with a liquid inlet of a seal circulating pump through a pipeline; a liquid outlet of a working medium seal circulating pump is connected with a working medium liquid inlet of the evaporation chamber through a pipeline; a water outlet of a cooling tower is connected with a water inlet of a water circulating pump through a pipeline; a water outlet of the water circulation pump is connected with a cooling water inlet of the fixed tube-plate type heat exchanging condenser through a pipeline; and a cooling water outlet of the fixed tube-plate type heat exchanging condenser is connected with the cooling tower through a pipeline. According to the invention, the waste heat of tail gas of the heating furnace at the temperature of 300-100 DEG C can be recycled.

The invention discloses compound morchella mycelium polysaccharide granules. The compound morchella mycelium polysaccharide granules are prepared from the following compositions in parts by weight: 2-5 parts of morchella angusticeps polysaccharide liquid, 3-6 parts of morchella conica polysaccharide liquid, 3-5 parts of dextrin, and 2-4 parts of fructo-oligosaccharide. During preparation, sizing agents obtained by mixing are sterilized, and then vacuum specific volume reducing treatment is performed for drying. The compound morchella mycelium polysaccharide granules disclosed by the invention have the bioactivity of resisting oxidation, resisting tumors, adjusting immunity, resisting weariness and the like; and the compound morchella mycelium polysaccharide granules contain protein, amino acids and other substances, so that the nutrients of the granules are enriched, and the compound morchella mycelium polysaccharide granules are health-care nutritive foods.

The invention relates to myopia-preventing printing ink capable of effectively absorbing high-energy harmful blue light and a preparation and spraying method thereof, wherein the myopia-preventing printing ink comprises an inorganic pigment, vegetable oil, calcium carbonate, acrylic resin and a defoaming agent, and is characterized in that the myopia-preventing printing ink comprises 45-55 parts of the inorganic pigment, 20-25 parts of the vegetable oil, 5-15 parts of the calcium carbonate, 5-10 parts of the acrylic resin and 2-2.5 parts of the defoaming agent. The myopia-preventing printing ink has the beneficial effects that the finished product ink is fine in particles, bright in color, strong in covering power, small in apparent specific volume, excellent in resistance and extremely high in chemical stability and high-temperature resistance, and high-energy harmful blue light with the wavelength ranging from 410 nm to 460 nm can be effectively absorbed after the paper is coated andprinted on site. The main wavelength of a printed finished product is in an accurate range of 572 + / -5 nm; the spectral point color has bright vision spectral light visual efficiency of 95% or more,and does not change along with different light intensities, so that frequent adjustment of eyes caused by light intensity change can be reduced, visual fatigue is relieved to the maximum extent, damage to vision is reduced, and the effects of protecting vision and preventing myopia are achieved.

The invention relates to the technical field of capacitors, in particular to an electrolytic capacitor for a quick charging system of a new energy vehicle. The electrolytic capacitor for the quick charging system of the new energy vehicle is characterized in that at least three anode leads are riveted to an anode aluminum foil, at least three cathode leads are riveted to a cathode aluminum foil, the electrolytic capacitor comprises an anode aluminum foil, first electrolytic paper, a cathode aluminum foil and second electrolytic paper from the inside to the outside, and the anode aluminum foil, the first electrolytic paper, the cathode aluminum foil and the second electrolytic paper are wound to form an element which is sleeved with a capacitor cover and placed in an aluminum shell. The electrolytic capacitor has the advantages that due to increase of lead quantity, contact areas of the leads and the aluminum foils are widened, impedance is reduced, and current surge resistance is improved; by size arrangement, withstand voltage of the electrolytic capacitor is increased while specific volume and internal resistance are reduced; voltage endurance capability can be improved owing to high-density composite paper, and more electrolyte can be absorbed by low-density composite paper, so that service life of the whole electrolytic capacitor can be prolonged.

The present invention provides a preparation method of an anodic tantalum block capable of reducing the change rate of a capacity of tantalum capacitor. The method includes the following steps that: (1) tantalum powder for anodic tantalum block molding is selected; (2) the forming voltage and upper-limit compaction density of the anodic tantalum block are designed, and corresponding specification parameters of the anodic tantalum block are designed; (3) the tantalum powder selected in the step (1) is pressed according to the related parameters in the step (2), so that the anodic tantalum block can be formed; and vacuum sintering is performed on the molded anodic tantalum block. According to the preparation method of the invention, in the allowed range of the manufacturing techniques of the product, the actual density of the anodic tantalum block is increased, or the sintering temperature of the anodic tantalum block is increased, or the specific volume of the sintered anodic tantalum block is decreased, and therefore, the change rate of the capacity of the non-solid tantalum electrolytic capacitor under 125 DEG C can be effectively decreased, and thus, the problem of large change of the capacity of the non-solid tantalum electrolytic capacitor under high temperature can be solved, and a manufacturing guarantee can be provided for high-precision requirements of the market for this kind of products.

The crystal of 3-{5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-[(3-hydroxy-1,2-benzisoxazol-6-yl)methoxy]phenyl}propionic acid having peaks at the position of 14.0, 16.0, 23.3, 23.7 and 26.3° and the crystal of 3-{5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-[(3-hydroxy-1,2-benzisoxazol-6-yl)methoxy]phenyl}propionic acid having peaks at the position of 14.6, 23.1, 24.7, 25.6 and 26.0° on 2θ of diffraction angle in a powder X-ray diffraction pattern have a small specific volume, are hard to be charged with electricity, are easily handled and are useful for an active pharmaceutical ingredient of excellent anti-rheumatic agents.

The invention relates to a Brayton-cascade steam Rankine combined cycle power generation system. The gas exhaust of a Brayton cycle is adopted as a heat source for a high-temperature end steam Rankine cycle, a steam condenser in a high-pressure end steam Rankine cycle is adopted as one of heat sources for a low-pressure end steam Rankine cycle, the latent heat of vaporization of the steam in the high-pressure end steam Rankine cycle is efficiently recovered to be used for power generation in the low-pressure end steam Rankine cycle, consequently, the load of the steam condenser of the conventional steam Rankine cycle system can be effectively reduced by more than absolute 20 percent, and by adopting a system optimization technique, the absolute thermal efficiency of the cycles of the whole system can be increased by more than 5 percent. The Brayton-cascade steam Rankine combined cycle power generation system not only can be used in the energy-saving alteration of conventional units, but also can be used in the design and construction of new units, and economic, social and environmental protection benefits are remarkable.

The invention discloses a device for improving vacuum of a thermal power generating unit. The device comprises a steam turbine low-pressure cylinder which is equipped with a steam exhaust pipeline; the steam exhaust pipeline is respectively connected with a steam condensing device and an air cooling steam condenser; mixing devices are arranged in the steam exhaust pipeline and a steam distribution pipeline of the air cooling condenser; a condensed water tank and an air pumping device are connected to the lower end of the air cooling condenser; the condensed water tank is connected with a circulating condensed water collecting tank through a condensed water regulating valve; the circulating condensed water collecting box is connected with the air pumping device; the air pumping device is sequentially connected with reverse rankine cycle electric pump refrigerating system through a second cooling water regulating valve and a circulating cooling water pump in a sequence; the circulating condensed water collecting tank is connected with a reverse rankine cycle electric pump refrigerating device through a check valve, a water pump and a demineralized water regulating valve in a sequence; the circulating condensed water collecting tank is connected with the steam condensing device through a circulating water pump; the circulating cooling water pump and a first cooling water regulating valve are connected with the steam condensing device; the condensed water tank is connected with the steam condensing device through the circulating water pump.

The invention discloses a refrigerating system applicable to automobile engine exhaust. The refrigerating system comprises an evaporator, a working medium pump, an exhaust heat regenerator, a condenser, a screw expander, a compressor, a generator, circulating pipelines, a liquid storage tank, an electric power storage tank and the like. One part takes an exhaust heat source emitted from an engineas the heat source, exhaust emitted by an automobile exhaust pipe heats an organic working medium in the liquid storage tank, the organic working medium is changed into a gaseous state from the liquidstate, then steam is introduced into the expander for acting through a steam pipe, and one part drives the compressor to perform refrigerating; and the other part is brought to the electric power storage tank for energy storage through the turbine generator, so that the compressor operates normally when the engine stops working. The refrigerating system fully recovers heat energy in the automobile exhaust, and the utilization rate is high.

A novel heat pump water heater suitable for a ship comprises an evaporator, a working medium pump, a motor, a condenser, a screw expander, a compressor, a generator, a circulating pipeline, a liquid storage tank, an electricity storage box and the like. One part uses the waste gas heat source exhausted through an internal combustion engine as a heat source, an organic working medium in the liquid storage box is heated through exhausted high-temperature waste gas, the organic working medium is converted from the liquid state to the gaseous state, then, steam is injected into the expander to do work through a steam pipe, and one part drives the compressor for heating; and the other part drives the electricity storage box for energy storage through the turbine generator so that the compressor can operate normally and conduct heating when the engine stops working. The novel heat pump water heater can sufficiently recycle heat energy in waste gas of the ship internal combustion engine and is high in utilization rate.