1268 results about "Liquid oxygen" patented technology

A power plant including an air separation unit (ASU) arranged to separate nitrogen, oxygen, carbon dioxide and argon from air and produce a stream of substantially pure liquid oxygen, nitrogen, carbon dioxide and argon; a steam generator, fired or unfired, arranged to combust a fuel, e.g., natural gas, liquefied natural gas, synthesis gas, coal, petroleum coke, biomass, municipal solid waste or any other gaseous, liquid or solid fuel in the presence of air and a quantity of substantially pure oxygen gas to produce an exhaust gas comprising water, carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, sulfur oxides and other trace gases, and a steam-turbine-generator to produce electricity, a primary gas heat exchanger unit for particulate/acid gas/moisture removal and a secondary heat exchanger arranged to cool the remainder of the exhaust gases from the steam generator. Exhaust gases are liquefied in the ASU thereby recovering carbon dioxide, nitrogen oxides, nitrogen, sulfur oxides, oxygen, and all other trace gases from the steam generator exhaust gas stream. The cooled gases are liquefied in the ASU and separated for sale or re-use in the power plant. Carbon dioxide liquid is transported from the plant for use in enhanced oil recovery or for other commercial use. Carbon dioxide removal is accomplished in the ASU by cryogenic separation of the gases, after directing the stream of liquid nitrogen from the air separation unit to the exhaust gas heat exchanger units to cool all of the exhaust gases including carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, oxygen, sulfur oxides, and other trace gases.

The present invention belongs to an industrialization aquiculture field, particularly relates to a closed cycle water industrialized fish cultivating system. The system separates solid and liquid in a storage sedimentation basin and a backwater channel sedimentation and rotational flow pool sedimentation, the tiny particulate matter is separated and purified by a sandrock filtering bed of a one level biological filter based on the water particulate matter separation, the water purified by the one level biological filter is feed into a two stage biological filter, the biological film of biologic filling material in the one level and the two stage biological filters is degraded with ammonia nitrogen and azote nitrous acid, the total purifying rate of the water particulate matter reaches more than 99%, the culturing water is added with oxygen mechanically or by liquid oxygen, finally the water is disinfected and sterilized through a ultraviolet ray sterilizer, and the clean ecological water is feed into a fish pool, thus the waste water of the fish pool may be purified and used in repeat. The fish-cultivating system implements completely closed cycle water industrialized fish cultivation, the fish is out of a disease or less, and the fish survival is more than 80%.

A multi-mode multi-propellant rocket engine capable of operating in a plurality of selected modes.Propellant components may include liquid hydrogen, liquid hydrocarbon, liquid oxygen, liquid fluorine, and liquid air. The liquid oxygen and the liquid air are stored in separate tanks are mixed in a dedicated mixer prior to their injection into the combustion chamber.

A novel method is set out of preparation of radioactive diagnostic radiopharmaceutical in a stable, shippable, lyophilized form by an apparatus designed to rapidly flash freeze and dehydrate a radiopharmaceutical composition to minimize auto radiolysis. The method proposes rapid cooling and removal of ambient vapor, and then ultra cold removal when the potential of explosive liquid oxygen is eliminated. The radioactive diagnostic radiopharmaceutical requires no further cold or refrigerated storage, including with respect to shipping, subsequent to stabilization. The preferred composition can be reconstituted “on site” by the addition of a suitable diluent to bring the radiopharmaceutical complex into solution at a desired concentration.

An air separator using the cold energy generated by liquefying natural gas to prepare liquefied oxygen, liquefied nitrogen and liquefied argon is based on existing air separator, and features that the multi-stage circulating nitrogen compressors, LNG heat exchanger and circulated nitrogen heat exchanger are additionally used to form a combined refrigerating system, and an air cooling system is also used.

This kind of system separating air and recovering cold energy of liquefied natural gas at least includes an air separator mainly consisting of a fractionating tower and at least includes an equipment for recovering cold energy of liquefied natural gas mainly consisting of an liquefied natural gas heat exchanger, which still includes main heat exchanger, liquid-oxygen heat exchanger and liquid-nitrogen liquid air subcooler; nitrogen drawing out from the underpart of the upper column on the fractionating tower passes through liquid-nitrogen liquid air subcooler and reheated by main heat exchanger, and enters into liquefied-natural-gas heat exchanger to precool and exchange heat; the equipment recovering cold energy of liquefied natural gas at least includes air-liquid separator and liquid nitrogen subcooler, which is placed in a single ice chest II; while main heat exchanger, liquid-oxygen heat exchanger, liquid-nitrogen liquid air subcooler and fractionator consisting of the lower column, the upper column and main evaporator are placed in an ice chest I; it fully utilizes high-grade cooling capacity of liquefied natural gas, and makes energy consumption of air separator reduce notably and ensures it operate safely, and can get the great society and economy benefits.

The invention belongs to the field of supercritical water treatment, and discloses a method for recovery and cascade utilization of waste heat of a supercritical water treatment system of waste organic substances. The method comprises the following steps that: for fluid overflowing out of the reaction outlet end of a reactor, one part of the fluid flows through a heating coil pipe in a desalting and deslagging device first, and then flows through a heat exchanger group to preheat materials after strong brine in the desalting and deslagging device is heated; another part of the fluid is used for preheating a first path of evaporation wall water; then two parts of the fluids are mixed together, and after vapor-liquid separation, the liquid flows through a hot bath type liquid oxygen vaporizer to vaporize liquid oxygen, and finally flows back into a first liquid collection box; and the fluid overflowing out of the upper outlet end of the desalting and deslagging device flows through a first heat exchanger to preheat oxygen first and then preheat a second path of the evaporation wall water, and after the vapor-liquid separation, the liquid flows back into a second liquid collection box. Thus, the sufficient recovery and the cascade utilization of the waste heat are achieved.

The invention discloses a supercritical water oxidation treatment system for printing and dyeing wastewater and sludge. The system comprises a concentration pretreatment device, a supercritical water oxidation device, an oxidizing agent supply device and a wastewater recycling system, wherein the concentration pretreatment device comprises a waste liquid storage tank, a nanofiltration membrane concentration module and a printing and dyeing sludge storage pool, the oxidizing agent supply device comprises a liquid oxygen storage tank, a liquid oxygen gasifier and a buffer tank, and the supercritical water oxidization device comprises an auxiliary heating supercritical water oxidization reactor, a methyl alcohol starting preheater, a methyl alcohol preheater and a waste liquid preheater. The system can be used for realizing efficient, clean and harmless treatment of high-concentration printing and dyeing wastewater and sludge at low cost.

The invention discloses an enclosed methanol-water steam reforming fuel cell hydrogen source system, which comprises a methanol supplying device, a liquid oxygen device, a carbon dioxide storage device, a water storage device, and a methanol hydrogen producing device; wherein the methanol hydrogen producing device comprises an evaporation device, a reforming device, a combustion device, a carbon monoxide selective oxidation reactor, and other auxiliary systems; and the combustion device, reforming device, evaporation device, and carbon monoxide selective oxidation reactor are integrated into a module. According to the hydrogen production method, methanol and water are gasified by the evaporation device and then react in the reforming device to obtain reformed gas; then the reformed gas is processed by the monoxide selective oxidation reactor, the concentration of carbon monoxide in reformed gas is further reduced, and finally the reformed gas is introduced into the fuel cell system to carry out electrochemical reactions. The provided system has the advantages that the system operates in an enclosed space, the operability and safety of the system are both improved; the heat exchange and reactions are well matched, and the whole reforming hydrogen production system is high efficient and compact.

The present invention relates to a method for refining catalytic liquefied petroleum gas, in which catalyzed liquefied petroleum gas by alconol-amine method removing hydrogen sulfide process is operated by hydrolysis carbonyl sulfur process by passing through carbonyl sulfur hydrolysis activator bed layer, such that carbonyl sulfur hydrolysis generates sulfureted hydrogen and carbon dioxide; then it passes through the desulfurizer bed layer to operate hydrogen sulfide removing process, the preparation of reaction of the hydrogen sulfide and the desulfurizer is chemically absorbed on the desulfurizer; at last, liquid oxygen supplying agent having effective component of tert-butyl hydroperoxide is applied into the catalyzed liquefied petroleum gas, then it is processed by transformation mercaptan by passing through the double effects activator bed layer, under the effect of the double effects activator, the tert-butyl hydroperoxide is hydrogen peroxide decomposed to release fresh state oxygen, and the mercaptan is oxygenated to bisulfide; the activate component of the double effects activator is compound of manganic.

A hybrid SOFC/gas turbine electric generating system comprising an SOFC stack, a hydrocarbon reformer, a first anode tailgas hydrogen-rich combustor to drive a first gas turbine stage, and a second stoichiometric combustor to drive a second gas turbine stage to drive a generator. Anode tailgas is also recycled into the reformer for substantially endothermic reforming of hydrocarbon fuel. Oxidant is provided as pure oxygen—which may be stored as liquid oxygen. All nitrogen may be excluded. Cathode exhaust is passed to the first combustor, to the second combustor, and is recycled into the cathodes. The turbine exhaust is passed through successive heat exchangers cooled by liquid oxygen being vaporized, precipitating water and solid CO₂. The system is operated at about 800 kPa (about 8 atmospheres), thereby increasing the power output of the stack. The system may be operated with no gaseous exhaust or with by-products of water and CO₂.

A cryogenic propellant storage tank system and method are disclosed that thermally couple LO2 and LCH4 tanks together by using either a single tank compartmentalized by a common tank wall or two separate tanks that are coupled together with one or more thermal couplers having high thermal conductivity. Cryogenic cooling equipment may be located only in the LO2 tank while the LCH4 is cooled by the LO2 tank interface. Embodiments of the invention may employ both LO2 and LCH4 liquid acquisition devices (LADs) for low-gravity use. In further embodiments, only the LO2 LADs may be integrated with thermal cooling equipment.

Apparatus and method for separating oxygen directly from air, operating at substantially atmospheric pressure and recuperating energy used for cooling incoming air. An ambient air input leads from the atmosphere to a vessel for confining gases. A cryocooler has a cooled surface in the vessel for directly condensing oxygen from the air at substantially atmospheric pressure. The cryocooler cools the cold surface to a temperature greater than the boiling point temperature of nitrogen and not greater than the boiling point temperature of oxygen for condensing oxygen. A liquid/gas separator separates the liquid oxygen from residual gases which both flow out through separate outputs. Air is propelled through the system at substantially atmospheric pressure by an air impeller. A heat exchanger recovers cooling energy and dehumidifies incoming air by transferring heat from the incoming air to outgoing gases.

The present invention is a retractable afterburner shroud for use upon a jet engine. The retractable shroud conforms to an outer surface of a jet engine. The afterburner shroud is affixed by a plurality of moveable support arms. The afterburner shroud is retractable. During operation of the afterburner shroud, the afterburner shroud is extended rearward toward the exhaust of the jet engine. A storage tank provides liquid oxygen through the support arms to a mixing ring located within the afterburner shroud. The mixing ring mixes the liquid oxygen and fuel to form a combustible mixture. The combustible mixture is injected into the exhaust wherein the mixture is ignited. The ignited mixture provides additional thrust for the jet engine.

The invention discloses a liquid oxygen container with a multi-layer vacuum thermal insulation layer and a fiber reinforced composite material layer, relates to a liquid oxygen container and solves the problems that the conventional liquid oxygen container is in a stainless steel structure and has the defects of high weight, low storage and transportation efficiency and high storage and transportation cost. A second supporting disc is fixedly sleeved on each supporting cylinder; a third supporting disc is fixedly sleeved on each second supporting disc; each third supporting disc is fixedly connected with the inner wall of a shell of the container in the circumferential direction; a liner consists of a metal liner layer, the fiber reinforced composite material layer and the multi-layer vacuum thermal insulation layer sequentially from interior to exterior; the fiber reinforced composite material layer is wound on the outer wall of the metal liner layer; and multi-layer vacuum thermal insulation layer is coated on the outer surface of the fiber reinforced composite material layer. The liquid oxygen container with the multi-layer vacuum thermal insulation layer and the fiber reinforced composite material layer is used for storing and transporting liquid oxygen.

The invention provides a low-temperature propellant supplying system, a method and a device. The low-temperature propellant supplying system comprises a nitrogen blowing away system, an oxidant supplying system, a fuel supplying system and a low-pressure liquid oxygen cooling system; the nitrogen blowing away system is used for carrying out purging operation on a system pipeline before and after an experiment and detecting the air tightness of the low-temperature propellant supplying system; under the condition that the air tightness of the low-temperature propellant supplying system is qualified, the oxidant supplying system is used for conveying liquid oxygen to an engine thrust chamber; the fuel supplying system is used for conveying liquid methane to the engine thrust chamber; the low-pressure liquid oxygen cooling system is used for cooling a pipeline, wherein partial pipeline is located between an electromagnetic valve (A15) and the engine thrust chamber and partial pipeline is located between an electromagnetic valve (B15) and the engine thrust chamber. According to the embodiment of the supplying system, the method and the device, the required preset temperature can be achieved before the test, the low-pressure liquid oxygen cooling system adopts low-pressure liquid oxygen to cool the environment so as to ensure the safety, the propellant conveying amount can be stablyadjusted, and simplicity and reliability are achieved.

The invention relates to the field of rocket-engine propellant delivery systems, in particular to a gas-oxygen-kerosene rocket-engine pressurizing delivery system and a small-rocket-engine propellantsupplying system. The pressurizing delivery system comprises an oxygen supplying system, a fuel oil supplying system and a blowing-off system; the oxygen supplying system comprises an oxygen storage tank valve assembly, a first stop valve, a first one-way valve and a second one-way valve; the oxygen storage tank valve assembly, the first stop valve and the first one-way valve are sequentially communicated through a pipe, the second one-way valve is communicated with the blowing-off system, and an outlet of the first one-way valve and an outlet of the second one-way valve are connected with a thrust chamber through the same pipe; the fuel oil supplying system is connected with the blowing-off system to enter the thrust chamber through the pipe. The gas-oxygen-kerosene rocket-engine pressurizing delivery system in the technical scheme is compared with a liquid-oxygen-kerosene rocket propellant delivery system, complex design such as pressurization-system gas-liquid phase transition, delivery-system low-temperature two-phase flow and engine pre-cooling are not required to be considered, and the complex degree and the quality of the system structure are also greatly reduced.

The invention discloses an IGCC power station peak regulating device achieving energy storage through an air separation system and a method. The device comprises a gasification furnace, a synthesis gas purification unit, a gas turbine power generation system, a waste heat boiler system and a steam turbine power generation system; oxygen needed by the gasification furnace is supplied by the air separation system; the air separation system comprises an air cooling and compressing system which supplies cooling air to a rectifying tower and can achieve variable frequency regulation, air in the rectifying tower is separated into nitrogen and oxygen, nitrogen and oxygen are stored in a liquid nitrogen storage tank and a liquid oxygen storage tank respectively, the liquid oxygen storage tank is connected with an oxygen heater through a liquid oxygen pump and a cold box, and high-pressure oxygen coming out from the oxygen heater is delivered to the gasification furnace. According to the device and method, the defects that an IGCC power generation system is low in load varying speed and poor in power grid peak regulating capacity are overcome, the capability of quickly regulating the IGCC output power is achieved through the storage capacity of the air separation system, and the whole-plant output power can be increased and decreased by within 20% most quickly in a short time.