137results about How to "Rapid condensation" patented technology

Naphthalene, benzene, toluene, xylene, and other volatile organic compounds have been identified as serious health hazards. This is especially true for personnel working with JP8 jet fuel and other fuels containing naphthalene as well as other hazardous volatile organic compounds (VOCs). Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to naphthalene or other hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined. The badges employ a new native fluorescence based detection method to identify and differentiate VOCs. The particular focus of some embodiments are the detection and identification of naphthalene while other embodiments are directed to detection and identification of other VOCs like aromatic hydrocarbons such as benzene, toluene, and xylene.

A drying system for a dishwasher including a passive vent assembly mounted to a top portion of the dishwasher. The passive vent assembly includes a passive vent structure having a series of air vents defined therein and through which drying air flows are drawn into the wash chamber of the dishwasher, a diffuser mounted over the air vents and including a series of fins for spreading the drying air flows across the wash chamber, and a moisture trap hood mounted over an upper surface of the passive vent structure.

The invention belongs to the technical field of biomass energy utilization, and particularly relates to a biomass quick catalytic pyrolysis device and method. The device comprises a hopper, a feed system, a revolving bed pyrolysis reactor, a gas-solid separation system, a pyrolysis gas condensation system, a flammable gas storage tank, a liquid collecting box, a solid coke collecting box, a burning system and a gas carrying and heat exchanging system, wherein the revolving bed pyrolysis reactor is composed of a revolving bed body, an airtight shell, a heat exchanging flue passage, a drive system, a spherical carrier and the like. After pretreatment, biomass particles enter into the revolving bed body and are subjected to quick catalytic pyrolysis under the effect of a catalyst, and generated pyrolysis gas is subjected to quick condensation to obtain certain bio-oil; non-condensing flammable gas and coke are collected and are used for burning and heat supply to achieve self-heating pyrolysis. The device can prepare high-grade liquid fuel or bio-oil containing rich high value-added chemicals by adjusting reaction working conditions and catalyst types.

There is provided a method for producing single-wall carbon nanotubes comprising condensing a plasma comprising atoms or molecules of carbon and atoms of a metal suitable for catalyzing the formation of single-wall carbon nanotubes in an oven at a predetermined temperature so as to provide a temperature gradient, thereby forming single-wall carbon nanotubes; and collecting the so-formed single-wall carbon nanotubes by passing them through an electrostatic trap comprising a pair of electrodes generating an electrical current so as to deposit at least a portion of the single-wall carbon nanotubes on one of the electrodes.

Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.

The invention discloses a cleaning method for tunnel dry ice. The method comprises the following steps: 1) respectively connecting an air compressor, a liquid carbon dioxide storage tank and a dry ice cleaning device, and checking gas tightness; 2) connecting the dry ice cleaning device and interfaces of each nozzle set on a cleaning nozzle machine bogie; 3) driving an engineering truck into a tunnel inlet to be cleaned, and adjusting the cleaning nozzle machine bogie; 4) opening the air compressor, opening a valve connected with the dry ice cleaning device after the pressure of the air compressor reaches set value; 5) opening the carbon dioxide storage tank valve; 6) uniformly progressing the engineering truck with low speed, assuring the cleaning time of each cleaned surface for 1-2 seconds; 7) closing the liquid carbon dioxide storage tank valve after finishing cleaning. The cleaning method develops a device suitable for cleaning the tunnel dry ice according to physico-chemical property of carbon dioxide, thermodynamic principle and dry ice cleaning characteristics; according to the cleaning method for tunnel dry ice, the ejected dry ice is dry ice sand which has soft texture, small grain diameter and low density, so that the surface of cement is favorable for cleaning and has no injury to the cement, thereby reducing the influence of void and fissuring of the cement surface caused by dry ice micro detonation.

The invention discloses a chlorine-free type high-strength high-performance sprayed concrete accelerator which comprises aluminate, carbonate, alkali metal hydroxide, alkanolamine, cellulose and water. Through the invention, the setting time of cement slurry and concrete can be greatly shortened, the cement slurry and the concrete are initially set within 5 minutes and finally set within 10 minutes, and the strength is rapidly improved after the slurry is set. The rusting harm of chlorine ions to reinforcing bars inside the concrete can be effectively avoided by using the invention.

The invention relates to a differential grinding roller type rapid biomass catalytic pyrolysis device and method. The device comprises a hopper, a feed system, a differential grinding roller type pyrolysis reactor, a gas-solid separation system, a pyrolysis gas condensation system, a bio-oil collection tank, a carbon collection box, a combustion system, a heat exchange system and a fused salt circulation system. The differential grinding roller type pyrolysis reactor comprises a pair of differential grinding rollers, a closed casing, a high-temperature fused salt heat exchange tube, a materialinlet/outlet, a gas outlet, a drive and transmission device and a thermal insulation system. The pretreated biomass raw materials are subjected to heating and shearing friction of cross high-temperature millstones, the surface carbon residues are continuously peeled off, and effective catalytic pyrolysis inside raw material particles is ensured; the pyrolysis gas is rapidly condensed after gas-solid separation so as to obtain high-grade bio-oil fuel or bio-oil enriched in specific high value-added products; meanwhile, the combustible gas and coke are collected and combusted to produce high temperature flue gas, and the flue gas is used for heating the fused salt and conducting heat and further heating the millstone, so that a self-heating pyrolysis process is realized.

Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.

The invention relates to a self-purification method for a machine-made charcoal kiln smoke collecting pipe and a kiln smoke collecting system for the self-purification method. The method comprises the steps that bamboo and wood vinegar liquor in a liquor collecting pool flows back to the portion near the air inlet end of the kiln smoke collecting pipe through a circulating liquor supply pipeline, and the bamboo and wood vinegar liquor is used for spraying and purifying kiln smoke newly entering the kiln smoke collecting pipe; the kiln smoke collecting pipe has a certain degree of inclination, and the liquor in the kiln smoke collecting pipe is guided out from the low end and flows to the liquor collecting pool; and the smoke in the kiln smoke collecting pipe is guided out from the high end and flows to a water-gas separation device. According to the self-purification method for the machine-made charcoal kiln smoke collecting pipe and the kiln smoke collecting system, the bamboo and wood vinegar liquor flows back to the air inlet end of the kiln smoke collecting pipe through the circulating liquor supply pipeline; on the one hand, kiln smoke purification is facilitated, vaporific gas in the kiln smoke is condensed quickly, the smoke is set quickly, and the vaporific gas and the smoke flow to the liquor collecting pool along with the bamboo and wood vinegar liquor; and on the other hand, due to the fact that the bamboo and wood vinegar liquor flows in the kiln smoke collecting pipe in a circulating manner, the flushing function on the inner wall of the kiln smoke collecting pipe is achieved, and thus the kiln smoke collecting pipe can be prevented from being blocked, and the ventilatory capacity of the pipe and the pipe gas delivery safety are increased.

The invention relates to a core test device for high temperature and high pressure hydraulic fracturing and triaxial test. The core test device is composed of a top conical thread plug, a dismountingauxiliary hole, an O-shaped sealing ring, a movable bolt ring, a cylinder body, a top cushion block, a heating resistance wire, a cavity, a rock sample, a high elastic rubber sleeve, a bottom cushionblock, a stepseal, an axial direction plunger, an axial direction bolt guide rail, an oil guide hole, a central water guide hole, a condensing pipe, a thermal insulation protective layer, a heat transfer of cooling chamber, a servo hydraulic press, a bolt, a constraint slot, a high-voltage four-way valve, a hydraulic pump, a confining pressure pump, a lifting controller, an oil box, a computer system, and a high-voltage ball valve. The test device is simple in structure, convenient to detach, good in sealing performance, capable of rapidly replacing rock cores, and capable of performing different core mechanical property tests under various temperatures and pressure conditions according to scientific research and production requirements, the system comprises a core triaxial test and a hydraulic fracturing test, and the working efficiency is high and reliable.

The embodiment of the invention discloses an atomized production system, which comprises a spraying device, an atomizing chamber, a nitrogen gas compression system, a nitrogen producing system, a cooling system, grading systems and ventilators, wherein the spraying device is communicated with the atomizing chamber which is communicated with a plurality of sets of grading systems; each set of grading system is respectively connected with one ventilator; the nitrogen gas compression system is communicated with a gas balancing tank and the spraying device; and the nitrogen producing system is communicated with the gas balancing tank. In the atomized production system, a cooling tube array is arranged on a ventilation pipeline; and a water-cooling jacket is arranged on equipment. In the embodiment of the invention, one spraying device corresponds to the plurality of sets of grading systems and each set of grading system is provided with one ventilator; through a plurality of tests by an inventor, the pressure of the atomized production system can reach as high as 6-12MPa and the cooling speed can reach 103-104k/s; and in addition, high-pressure gas of the atomizing device is centrally used, and thereby the conversion rate of atomizing energy is improved and further the production capacity of the atomized production system is improved.

The invention discloses a heat-pipe-based heat exchange low-nitrogen type gas burner. The burner comprises an air-fuel mixing section and a combustion head which are sequentially connected in a gas flow direction, wherein a gas nozzle is arranged in the air-fuel mixing section, the combustion head comprises a plurality of heat pipes arranged in a pipe bundle mode, a heat pipe evaporation heat absorption section in the pipe bundle is arranged to form a combustion gap as the combustion head, and a heat pipe condensation heat release section is provided with a condensing device and is arranged outside a furnace. According to the burner, the combustion head formed through intermittent arrangement of the plurality of heat pipes is arranged between the furnace and the air-fuel mixing section, two phase-change heat exchange processes of evaporation heat absorption and condensation heat release in a heat pipe heat transfer process have the advantages of good heat conductivity, isothermal property and the like, so that pipe inner working media in the heat pipes are evaporated into steam when the heat pipe evaporation heat absorption section absorbs heat of a combustion zone of the furnace,the condensation device of air cooling, water cooling and the like is adopted for condensation and heat releasing, liquid after the steam in the pipes is subjected to heat releasing and condensation flows back the heat absorption section under the action of gravity, and the damage caused to a boiler hydrodynamic cycle of a water-cooled combustor water cycle is effectively solved.

The invention discloses a medicinal material processing device which comprises a cylinder body, a condensing assembly and a heating assembly. The heating assembly is located on the bottom of the cylinder body. The condensing assembly is located vertically above the cylinder body. The cylinder body is further provided with a first outlet, a first liquid inlet, a second liquid inlet, a feeding portand a discharging port. The body of the cylinder body is of a cylinder shape. The bottom is of a shape gradually expanded in the direction away from the discharging port from the discharging port. Theheating assembly is located at the position, close to the bottom, of the periphery wall of the cylinder body. The first outlet is formed in the top of the cylinder body and communicates with the condensing assembly. The discharging port is formed in the bottom of the cylinder body and provided with a first screening and filtering part. The feeding port is formed in the periphery wall of the cylinder body. The first liquid inlet and the second liquid inlet are formed in positions, of different heights, of the periphery wall of the cylinder body in the vertical direction. The flow guide direction of the first liquid inlet and the second liquid inlet is tangent with the inner wall of the cylinder body. According to the medicinal material processing device, the medicinal materials can be washed and extracted, the medicinal material processing steps are integrated, and the equipment utilization rate is increased.

The invention discloses a self-gravity water inlet heat regeneration type liquid film evaporation type solar seawater distillation device. The device comprises a flat-plate solar collector A, a concentrated seawater collection tank, a fresh water collection tank, a water distributor, a flow control valve, a seawater feeding pipe, a glass cover plate, an overflow pipe, a preheated seawater cylinder, a hot water inlet pipe A, a heating water tank, a condensation sleeve A, a water absorption material, a water baffle, a concentrated seawater collection pipe, a water return pipe, a hot water inletpipe B, a bottom plate and a fresh water collection pipe. According to the invention, the preheated seawater cylinder and a saline water separation part are combined into one, self-gravity water feeding of seawater can be realized by utilizing potential energy of the seawater to save the power driving energy consumption, the solar energy absorbed by the preheating seawater cylinder is absorbed byseawater, the water inlet temperature is increased, latent heat of condensation released by water vapor in the seawater feeding pipe during condensation is also absorbed by seawater in the seawater feeding pipe, condensation of the water vapor is promoted, and the water production rate of the seawater distillation device is increased.

The invention discloses a crop drying device with a rapid drying function. The crop drying device comprises a box body and a triggering mechanism. The box body is sequentially provided with a rotating cavity, a working cavity and a moving cavity from top to bottom, an opening communicating with the outside is formed in the inner wall of the front side of the working cavity, and a sliding door is installed on the opening. The triggering mechanism comprises a first rotating rod horizontally arranged in the rotating cavity, a motor is installed on the left side wall of the box body, and the tail end of an output shaft of the motor extends into the rotating cavity. The device stirs and shakes crops, so that the crops are always in a flowing state, when hot air is sprayed to the crops, the crops can be dried in all directions, the drying effect is better, water vapor is condensed into water drops, the water drops are thrown into a collecting tank through centrifugal force to be collected, and the water drops are prevented from falling into the crops again.

The invention discloses solid-liquid dual-purpose wine brewing equipment. The equipment comprises a tank body, a heating and heat insulation layer, an inner tank, a fermentation stirring cylinder, a partition plate, a tank cover, an air passing pipe and a rapid condensation tank; a heating and heat insulation layer is arranged on the side wall of the tank body, the inner tank is arranged in the heating and heat insulation layer, the fermentation stirring cylinder is arranged in the inner tank, and the partition plate is arranged on the side wall of the inner tank below the fermentation stirring cylinder; the tank cover is mounted on the top side of the tank body, the air passing pipe is arranged at the top of the tank cover, and the air passing pipe is connected to the rapid condensation tank on one side of the tank body; a shunting plug is arranged at the top end of the rapid condensationtank, and a condensation branch pipe is arranged below the shunting plug; the bottom end of the condensation branch pipe is mounted on a condensate plug; a liquid collecting tank is arranged below the condensate plug, and a support is arranged below the liquid collecting tank; and a rapid condensation liquid inlet pipe and a rapid condensation liquid outlet pipe are arranged on the side wall of the rapid condensation tank. The equipment has the characteristics of wine product improvement, uniform fermentation and heating, dual purposes for liquid and solid raw materials, softness and air permeability of solid raw materials, rapid condensation and strong yield improvement capability.

The invention discloses a condensation type heat exchange plate and a condensation type heat exchanger with the condensation type heat exchange plate. The interior of the heat exchange plate is divided into a plurality of arc-shaped water flowing channels which are parallel to one another, pipe connecting ports which are connected with a water inlet pipe and a water outlet pipe respectively are formed in the upper end and the lower end of the interior of the heat exchange plate respectively, water holes are formed in the positions of the pipe connecting ports, the two ends, communicated with the water holes, of an inner cavity of the heat exchange plate are provided with water collecting spaces respectively, the water collecting spaces are communicated with all the water flowing channels, and fins are arranged on the two outer sides of the heat exchange plate respectively. The condensation type heat exchanger is formed by combining a plurality of heat exchange plates in parallel, a smoke pipeline of the condensation type heat exchanger is an inter-plate gap defined by the ribs outside every two adjacent heat exchange plates, the water flowing channels inside the heat exchange plates serve as water flowing pipelines of the condensation type heat exchanger, and the space defined by down pipes on the bottoms of the heat exchange plates serves as a combustion chamber. The condensation type heat exchange plate is made of cast aluminum alloy through die casting and has the advantages that the heat resistance is high, the sealing performance is high, and the balance among the corrosion resistance, the good head conductivity and the manufacturing technology is well considered, heat loss is effectively reduced, and heat exchange efficiency is improved.