10 results about "Air separation" patented technology

A system and method for separating air into components uses an air dehydration membrane for removing water vapor from compressed air. Dried compressed air is then directed, from the dehydration membrane, into a gas separation module which may be a membrane system, different from the air dehydration membrane, or a pressure swing adsorption (PSA) system. The air dehydration membrane is made of a hydrophilic polymer having a permeability for water vapor which is greater than its permeability for air, and having low selectivity between oxygen and nitrogen. The air dehydration membrane has a hydrophilic coating, which itself may be a polymer. The coating does not affect the selectivity of the coated dehydration membrane with respect to oxygen and nitrogen, but does increase selectivity of the membrane with respect to water vapor.

The invention relates to an air separation device and a method for domestic garbage. The device comprises a preprocessing unit and an air separation unit, wherein the preprocessing unit contains a feed belt, a magnetic separator and a crusher, and the air separation unit comprises a charging belt, a dedusting filter cartridge, a circulating fan 1, an air separation chamber, an air return pipeline, a roller 1, a roller 2, a circulating fan 2, a heavy substance storage bin, an intermediate-weight substance storage bin, a light substance storage bin and the like. In the invention, the separation of the domestic garbage is realized by the following method: the domestic garbage enters the magnetic separator and the crusher by the feed belt for preprocessing, then enters the air separation unit and enters the air separation chamber by the charging belt, the air speed and the air quantity in the air separation chamber are controlled, heavy substances, intermediate-weight substances and light substances in the domestic garbage respectively fall into the respective storage bins, and the return air is connected to the dedusting filter cartridge by a pipeline and is returned to the circulating fans after the return air is dedusted.

The invention discloses a method for significantly reducing the comprehensive energy consumption of air separation, which comprises the following steps: feeding large amount of nitrogen pumped from the top of a lower tower into a heat exchanger for reheating and serving as pressure nitrogen products, allowing the rest nitrogen to enter a condenser-evaporator and condensing the rest nitrogen into liquid nitrogen; introducing part of the condensed liquid nitrogen serving as liquid nitrogen products, or pumping large amount of liquid nitrogen for internal compressing and reheating and then using the compressed and reheated liquid nitrogen as medium-pressure products. Because all nitrogen products are from the pressure nitrogen or internally-compressed liquid nitrogen pumped from the top of the lower tower, and the pumped amount is large, but not from the compressed low pressure nitrogen pumped from an upper tower, the pressure nitrogen is fully pumped, the rectification potentials of the upper and lower towers are fully utilized so as to reduce the energy consumption of air separation. Moreover, the backflow liquid of the top of the upper tower is pumped from the liquid nitrogen fraction on the upper part of the lower tower, which can further improve the rectification capacity of the upper tower, and reduce the energy consumption of air separation devices and the content of argon in nitrogen products. The process flow is characterized by optimum process organization, low investment cost of equipment and significant energy consumption reduction.

A lens barrel includes: a variable focal length lens system including at least three movable lens groups; and guiding means for moving the variable focal length lens system forward and backward in an optical axis direction. The variable focal length lens system includes at least first, second and third lens groups having positive, negative and positive refracting power, respectively, arranged in this order from an object side. When a lens position setting is changed from a wide angle end state to a telescopic end state, at least the first and third lens groups are moved toward the object side such that air separation between the first and second lens groups monotonously increases and air separation between the second and third lens groups monotonously decreases. The guiding means includes a fixed frame, a rotating frame, a rectilinear guiding frame, a first guide frame, and a second guide frame.

An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation is provided. The apparatus includes a CO₂ separation unit configured to separate the mixture, an air separation unit configured to separate air by cryogenic distillation, a water cooling tower that operates by direct contact, a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line for withdrawing cooled water from the tower and means for cooling the air upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.

The invention relates to a tea processing machine which comprises a main plate, a crushing and stirring device and an air separation circulating device, wherein the crushing and stirring device is arranged at the left end of the main plate, and the air separation circulating device is arranged at the right end of the main plate. During existing processing of brick tea raw materials, people need torepeatedly chop mixed raw teas and remove impurities, and the process is tedious and complicated; during crushing, people need to put the raw teas in the existing crushing machine for processing, theraw teas are crushed incompletely, and the mixed raw teas are not stirred uniformly; people usually take out the chopped teas and then put the chopped teas in the existing crushing machine again forprocessing after impurity removing by air separation, and the chopped raw teas cannot be taken out completely; manual operation is inconvenient, and part of the raw teas may leak in the operation process; and the process takes a long time, the labor intensity is high, the efficiency is low, etc. The tea processing machine can solve the difficult problems and can realize the functions of automaticstirring and chopping, impurity removing and circulating conveying for the mixed raw teas.

The invention relates to the field of preparation of iron, silicon and aluminum powder, in particular to a continuous feeding air separation device. The continuous feeding air separation device is characterized in that an air separation wheel is additionally arranged in a ball mill, so that the air separation wheel is used to pump powder which is ground in the ball mill and meets the fineness requirement into a powder separation system at any time, and the powder which meets the requirement is effectively prevented from being ground into fine waste powder because of being in the ball mill fora long time. By the adoption of the device, the capacity and efficiency requirements of the ball mill can be effectively met, so that the aim of ensuring the maximum output of products is realized.

The invention provides an oil-air separator driven by an engine oil scavenging pump. The oil-air separator driven by the engine oil scavenging pump comprises the scavenging pump, a cyclone type oil-air separator body, a transition pipe and an engine oil tank. An inlet of the transition pipe is connected with an outlet of the scavenging pump. An outlet of the transition pipe is connected with an inlet of the cyclone type oil-air separator body. The cyclone type oil-air separator body is installed on the engine oil tank. After an air and oil mixture in a crankcase of an engine is sucked by the scavenging pump and pressurized, the air and oil mixture enters the cyclone type oil-air separator body through the outlet of the scavenging pump via the transition pipe. After separation, air is discharged into the atmosphere, and engine oil flows back into the engine oil tank. By the adoption of the oil-air separator driven by the engine oil scavenging pump, the pressure of the outlet of the scavenging pump is fully utilized, the initial speed of the oil-air mixture at the inlet of the oil-air separator body is greatly increased, the oil-air separation efficiency of the oil-air separator is improved, the atmosphere pollution caused by the engine oil in exhaust gas of the engine is reduced, and engine oil consumption is reduced.

The invention relates to the field of building materials, in particular to an ultra-fine fly ash light self-insulation wall plate and a manufacturing method thereof. Fly ash is processed by a specialgrinder into ultra-fine fly ash with the specific surface area of 700m<2>/kg, fly ash crude residues discarded after air separation of a power plant replace building sand, 5-10 parts of silicate cement, HT-type special enhancers for the fly ash and water are mixed to form slurry, two fly ash cement foamed light insulation plates are embedded into the middle of a mould, alkali resistant glass fibergrid cloth is laid on the upper portion and the lower portion of the mould, 0.5-1.0 centimeter thick mixed slurry is uniformly poured on the periphery of the mould, tamped and leveled, the two fly ash cement foamed light insulation plates are firmly wrapped in the middle and demoulded after standing for 2-4 hours, and natural curing is performed for 7-10 days. The ultra-fine fly ash light self-insulation wall plate is light in weight, low in production cost, high in fly ash rate reaching 90% or more and applicable to internal, external and roof walls of buildings.

The invention relates to a CO2 zero-emission ammonia synthesis system and method based on iodine-sulfur semi-open type circulating hydrogen production and application of the CO2 zero-emission ammonia synthesis system and method. The system comprises an air separation device, an H2S preparation device, a Bunsen reaction device, an HI decomposition device and an NH3 synthesis device, by means of the system, hydrogen is prepared by decomposing water through a chemical method, reaction conditions are mild, the application range of the system in industrial practice is widened, energy consumption is reduced, the energy efficiency of the system is improved, and the system is a hydrogen production system which is low in energy consumption, zero in CO2 emission and capable of being industrially applied on a large scale.