47 results about "Fresh gas flow" patented technology

A method and arrangement for detecting a leak in an anesthesia system. The method includes controlling respiratory movements by means of ventilator gas flows and measuring the ventilator gas flow added for an inspiration and removed for an expiration. The method also includes supplying a fresh gas flow for a respiration and measuring the fresh gas flow added for the respiration. The method further includes receiving information indicative of the measured gas flows, determining based on said received information both the gas volume added and the gas volume removed and comparing these determined gas volumes to each other. The method also includes determining based on comparing the anesthesia system leakage.

A fuel cell includes an electrolyte electrode assembly and separators. The separator has a fuel gas supply passage, a fuel gas distribution passage, an oxygen-containing gas supply passage, and an oxygen-containing gas distribution passage. The fuel gas flows through the fuel gas supply passage into the separator. The fuel gas distribution passage connects the fuel gas channel and the fuel gas supply passage. The oxygen-containing gas flows through the oxygen-containing gas supply passage into the separator. The oxygen-containing gas distribution passage connects the oxygen-containing gas channel and the oxygen-containing gas supply passage.

A fuel gas passage, an oxygen-containing gas passage, and a coolant passage extend through a fuel cell stack. Each of the fuel gas passage and the oxygen-containing gas passage is formed by serially connecting passages between the first through third fuel cell modules. The fuel gas flows through the fuel gas passage, and the oxygen-containing gas flows through the oxygen-containing gas passage from the first fuel cell module toward the third fuel cell module. The coolant passage is formed by serially connecting passages between the first through third fuel modules. The coolant flows through the coolant passage from the third fuel cell module toward the first fuel cell module. The direction of the flow of the coolant is opposite to the direction of the flows of the fuel gas and the oxygen-containing gas.

The invention discloses a fluidized bed technology for directly capturing CO2 in mineralized flue gas. In the technology, a high-calcium waste, such as fly ash, carbide slag, steel slag, waste cement and the like, as a raw material. A by-pass is formed on a flue gas discharge pipeline to feed a flue gas flow of which the humidity and the temperature are regulated by a temperature and humidity regulator. In a fluidized bed reactor, the flue gas flow, of which the humidity and the temperature are regulated, is contacted with the high-calcium waste in a co-current flow manner to generate calcium carbonate. After the reaction, a dust-containing gas flow discharged out from the fluidized bed reactor is fed into a cyclone separator for gas-solid separation to obtain a gas flow, wherein the gas flow is fed into the original flue gas discharge pipeline and then is fed into the chimney for being discharged. The invention also provides a fluidized bed system for directly capturing CO2 in the mineralized flue gas. The technology can not only effectively increase the utilization rate of fly ash but also reduce CO2 emission of a power plant, is simple in processes, is convenient to continuously operate, is high in device processing capacity, is small in size and less in occupied area and can be combined with the existing system conveniently. Meanwhile, the decarbonized fly ash does not influence the original use approach of the fly ash from the power plant, thereby achieving a lower decarbonization cost.

An apparatus and method for supplying a breathing gas for a respiration. The apparatus includes a reciprocating unit configured to receive an inspiration gas flow and adapted to control respiratory movements. The apparatus also includes a gas mixer for supplying a fresh gas flow. The apparatus also includes a breathing circuit configured to conduct an expiration gas flow to the reciprocating unit and to conduct the fresh gas flow from the gas mixer for the respiration and to conduct the gas flow from the reciprocating unit for an inspiration, the breathing circuit comprising a CO2 remover configured to remove carbon dioxide from the gas. The apparatus also includes a first bypass passage configured to permit bypassing the reciprocating unit and connecting the breathing circuit to the inspiration gas flow upstream from the reciprocating unit.

A system for providing anesthesia or assisted ventilation that has a post-inspiratory valve fresh gas flow input is disclosed. In a preferred embodiment, a fresh gas flow diverter valve is provided to permit an operator to provide fresh gas flow proximally or distally of the inspiratory valve. Also disclosed is an adaptor and other breathing circuit components for forming a system of the present invention. A method of providing anesthesia or assisted ventilation using low flow fresh gas is disclosed.

In the present invention, a gas flow restraining ring facing corner portions of the front face of a substrate horizontally held on a substrate holding unit and movable up and down, is set to a predetermined height in accordance with a coating treatment. Then, a coating solution containing a coating film forming component and a solvent is applied to the front face of the substrate and spread into a thin film state by a so-called spin coating method, and thereafter the substrate is rotated at a high speed so that the coating solution is dried. In this case, it is possible to control fresh gas flow from above the substrate to decrease the difference in evaporation rate of the solvent between the coating solution on the corner portions of the substrate and the coating solution inside them, thus enabling the coating treatment uniform within a plane on the substrate.

An EGR mixer has a mixing shell which defines a mixing cavity only on the down side, and does not define the mixing cavity on the up side. The EGR mixer has a primary internal opening for fresh air, which is formed so that an opening plane is inclined to a side so that the opening plane faces a secondary internal opening for exhaust gas. The primary internal opening and the secondary internal opening are arranged to allow exhaust gas to enter into the primary internal opening. The exhaust gas restricts a fresh air flow so that the fresh air flow creates increased vacuum. It is possible to suppress pressure loss and to increase an amount of exhaust gas.

The invention discloses a fruit and vegetable mildew-proof storage device. The storage device comprises a storage jar, a total flow controller for controlling the total fresh gas flow, a cooling device, a distributor for distributing the fresh gas into a plurality of parallel fruit and vegetable storage devices as required, a gas detection device for detecting the concentration of each component in the gas discharged from each fruit and vegetable storage device at the real time, and a pump for providing a cycle power for the fresh gas, which are sequentially communicated by pipelines, wherein the pump is respectively communicated with the upper part and the lower part of the storage jar by the pipeline to form a cycle loop; the storage jar is selectively communicated with a plurality of gas generators by the pipeline. The fruit and vegetable is kept at low-concentration antibacterial state for a long time, so as to achieve the antibacterial effect, and also reduce the medicament residues, and different fruits and vegetables are processed by various preservatives and physiological regulators.

The invention relates to a carbon dioxide catching device and a carbon dioxide catching method. The device comprises an absorption and desorption unit with an absorption material used for absorbing carbon dioxide arranged inside. An inlet pipe of gas flow to be treated, a flushing gas flow inlet pipe, a desorption steam inlet pipe, an outlet pipe of treated gas flow, an outlet pipe of flushed gas flow, and an outlet pipe of desorbed steam are connected on the outside of the absorption and desorption unit. The device also comprises a flushing gas flow supply unit used for supplying flushing gas flow to the absorption and desorption unit, and a desorption steam supply unit connected with the desorption steam inlet pipe. The method comprises the steps of: an absorption step in which carbon dioxide in gas flow to be treated is absorbed by using the absorption material; a flushing purification step in which the carbon dioxide absorbed by the absorption material is flushed by using the flushing gas flow, such that the purity of the absorbed dioxide is improved; and a desorption step in which the carbon dioxide absorbed by the absorption material and purified is desorbed by using the desorption gas flow. With the device and the method provided by the invention, carbon dioxide capturing purity can be improved.

A respirator (1) includes a fresh gas port (23, 25, 27) for connecting a fresh gas supply, a gas outlet (3) for connecting a supply line for a patient, an absolute pressure sensor (21) and a data processor (37). The gas outlet and the fresh gas port are fluidically connected via an inhalation branch (17) that is connected to the absolute pressure sensor. The fresh gas port has an adjusting valve (31), to set gas flow from the fresh gas supply to the inhalation branch, and a differential pressure sensor (33). The differential pressure sensor determines a differential pressure in the fresh gas port between the inhalation branch and the adjusting valve. The data processor receives and records the absolute pressure measured and the differential pressure to determine a fresh gas flow through the fresh gas port. A method for determining a fresh gas flow is also shown and described.

A Volume Reflector indicator for an anesthesia system is disclosed. The anesthesia system includes a volume reflector (30), a breathing circuit (40), a processing unit (10), and a display (20) operatively connected to said processing unit (10), wherein said processing unit (10) is configured to provide a status indicator (50) on said display (20) for gas in said volume reflector (30), said status indicator (50) including a graphical representation of (51) an extent of a driving gas of said volume reflector (30) and/or a patient gas in said volume reflector (30), and/or (52) a flow of gas and a direction of said flow in said volume reflector (30), and/or (53) a waste gas flow out of said volume reflector (30) relative a fresh gas flow in said system (1), and/or (54) a re-breathing fraction (RBF), and/or (55) a balance between said fresh gas flow and patient uptake and/or leakage of gas from said breathing circuit.

The invention discloses a free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus, which includes: a measurement apparatus and a protective sleeve which are connected to each other. The measurement apparatus is used for measuring enthalpy value of flue gas flow and the protective sleeve is used for protecting the measurement apparatus. The measurement apparatus can work in a severe heat environment with incoming flow total temperature being higher than 3000 K and heat flow density being higher than 20 MW/m<2> for long time.

A method for separating carbon dioxide from a gas flow, in particular from a flue gas flow, where a gas flow is brought in contact with a scrubbing medium in an absorber of a separating device and carbon dioxide contained in the gas flow is separated, the loaded scrubbing medium is fed to a desorber of the separating device in order to release the carbon dioxide, a vapor flow is drawn from the desorber and is fed to a cooling device in order to form condensate, and the condensate formed in the cooling device is at least partially fed to a purifying device, in which degradation products contained in the condensate are removed by reverse osmosis and/or by an ion exchanger. A separating device is adapted for separating carbon dioxide from a gas flow.

The invention relates to the field of environmental protection devices, and concretely discloses a cyclone redistribution denitration reactor for flue gas. The cyclone redistribution denitration reactor comprises a flue gas inlet tube, a cyclone assembly for guiding flue gas, an ammonia spraying and mixing device, a connecting flue gas tube, a catalytic reaction device and a flue gas outlet tube which are sequentially interconnected, the cyclone assembly comprises a first shell, the flow guiding plates and a mounting plate, the flow guiding plates have a spiral fan blade shape, the flow guiding plates are connected to the inner wall of the first shell, and are arranged along the circumferential direction of the first shell, the quantity of the flow guiding plates is more than one, the rotating directions of all the flow guiding plates are same to each other, the mounting plate is positioned among all the flow guiding plates, and the mounting plate is fixedly connected to one ends, facing the center of the first shell, of all the flow guiding plates. Flue gas enters the cyclone assembly through the flue gas inlet tube, and moves along the flow guiding plates to form a uniform-rotating flue gas flow, so the flue gas is in a uniformly distributed state when moving to the ammonia spraying and mixing device, thereby the flue gas is well contacted and reacted with a reaction solutionsprayed by the ammonia spraying and mixing device, dead angles are reduced, and the denitration efficiency is improved.

Belonging to the technical field of dust removers, the invention specifically relates to a flow gas equilibrating device applicable to dust removers. The flow gas equilibrating device at least comprises a cavity, flue gas enters the cavity through a cavity inlet, and circulates into an electrostatic field from the cavity. Specifically, the inlet circulation area of the cavity is larger than the flue gas circulation area of the electrostatic field. According to the invention, through the arrangement, transient accumulation and collision can occur to the flue gas flowing into the cavity while the flue gas tries to enter the electrostatic field due to decrease of the circulation area, the situation can enable quick and uniform mixing of the flue gas in the cavity, specifically, congestion canoccur to electrostatic channels in which a lot of flue gas circulates originally, and the congestion can cause conveying of redundant flue gas to electrostatic channels with little flow volume originally, so that the actual circulation area in the electrostatic field can be the designed circulation area, the flow rate and dust removal time can be set according to the requirements, and the dust removal effect can be guaranteed.

The invention relates to a boiler flue structure which belongs to the technical field of combustion equipment. The boiler flue structure comprises a first flue, a second flue and a tail flue, wherein a boiler hearth outlet flue is partitioned into a U-shaped flue by a water-cooled wall partition, and the first flue and the second flue are sequentially arranged along a flue gas flow, and the first flue and the second flue are communicated through an ash bucket; a high-temperature reheater is arranged in the first flue, and a final stage superheater is arranged in the second flue; convection heating surfaces of a low-temperature reheater and a coal economizer are arranged in the tail flue; the bottom of the U-shaped channel is provided with the ash bucket which not only is a reversing chamber of the flue gas flow, but also can be used for ash deposition; the bottom of the ash bucket is provided with a gas lock which is convenient for regularly clearing ash deposition; and heating surfaces arranged in the U-shaped channels are all of slag coagulation structure in a large-pitch arrangement mode. By adopting the boiler flue structure provided by the invention, the problem of severe pollution of boiler high-temperature convection heating surfaces.

The invention provides an SCR denitration system. According to the invention, a first mixing unit, a first catalyst layer, a second mixing unit and a second catalyst layer are arranged in a main bodyand successively arranged along the flowing direction of flue gas. In the above-mentioned system, the flue gas is mixed by the first mixing unit; mixed flue gas flows through the first catalyst layerfor a reaction; unreacted NOx and NH3 flow out of the first catalyst layer and are in non-uniform flow-field distribution and concentration distribution; through arrangement of the second mixing unit,the flue gas is mixed again, so a nitrogen-ammonia mixture has more uniform velocity field and concentration field before flowing through the second catalyst layer, and can fully react when flowing through the second catalyst layer; thus, a large amount of an unreacted nitrogen-ammonia mixture is avoided from being discharged, and denitration efficiency of the whole SCR denitration system is improved.

The invention discloses a uniform flow-guiding pyrolysis reaction device for urea and high-temperature flue gas. The device comprises a high-temperature flue gas inlet and a pyrolysis reaction chamber; and one side of the high-temperature flue gas inlet communicates with a flue gas pipeline, one end of the flue gas pipeline is provided with a heating chamber, and the bottom of the heating chamberis provided with a diffusion section. According to the device provided by the invention, a circular flow-guiding plate is arranged in the diffusion section, in the process of a pyrolysis reaction of the urea, the flue gas which enters the device can be effectively divided into a plurality of small gas flows through a plurality of flue gas flow-guiding openings in the circular flow-guiding plate, the small gas flows are uniformly released and enters the interior of the pyrolysis reaction chamber, a plurality of atomizing spray nozzles are equidistantly arranged and annularly distributed at thesurface of a urea atomizing spray gun, so that the spraying area of the urea solution can be effectively increased, the pyrolysis reaction of the urea solution molecules and the high-temperature fluegas is more full, and the uniformity of urea pyrolysis and the reaction efficiency of pyrolysis are greatly improved.