214 results about "Manufactured gas" patented technology

Disclosed is a method which uses coke-oven gas as the raw material to produce liquefied natural gas; the method includes that the coke-oven gas is pretreated firstly to enable the tar, naphthalene and benzene impurities contained in the coke-oven gas to be purified deeply; and the purified coke-oven gas is processed with methanation reaction after compression and desulfurization; the liquefied natural gas product which contains CH4 with the content of more than 85% through the cryogenic separation process; the residual non-condensable gas is prepared to obtain the hydrogen with the purity of 99% through the PSA separation technique; the residual desorbed gas can be used as manufactured gas. The method which uses the coke-oven gas as the raw material to produce liquefied natural gas has the advantages of making full use of the compositions, saving energy, water and the investment, simple process and realizing the trinity coordinated development of economy, environment and energy sources.

A method of manufacturing gas and/or fuel swirlers for fuel injectors and combustor domes and cone-shaped swirlers so manufactured are disclosed. The disclosed conical swirlers feature cut-through slots on a cone-shaped body. The contour and spacing of the slots are configured and arranged to accommodate a wide range of requirements for fluid flow areas and swirl strengths. Preferably, the cone-shaped swirlers can be manufactured by wire EDM processing. More preferably, multiple cone-shaped swirlers can be manufactured simultaneously by nesting swirler blanks in a stack and wire EDM processing the stack as a unit. The cone-shaped pinwheel swirler fits well into various fuel injector heads, enabling the injectors to reduce the frontal surface area and flat area for minimal potential of carbon formation.

This invention relates to a multiple layer thermoplastic structure, use of the said structure for manufacturing a tank, and a tank comprising the said structure. Multi-layer thermoplastic structure of the said invention comprising at least one layer composed of an ethylene-vinyl alcohol copolymer with a density of between 0.94 and 1.4, and a melt flow index of between 1.3 and 4.2 g/10 minutes at a temperature between 170 and 240° C. It is used for manufacturing gas tanks.

Hybrid inorganic-organic, polymeric alloys are prepared by combining atomic layer deposition and molecular layer deposition techniques provide barrier protection against intrusion of atmospheric gases such as oxygen and water vapor. The alloy may be formed either directly on objects to be protected, or on a carrier substrate to form a barrier structure that subsequently may be employed to protect an object. The alloy thus formed is beneficially employed in constructing electronic devices such as photovoltaic cell arrays, organic light-emitting devices, and other optoelectronic devices.

An optical fiber includes a graphene oxide and a reduced graphene oxide and a gas sensor includes the optical fiber. A method for manufacturing the optical fiber includes coating a graphene oxide layer and reducing a part of the graphene oxide layer, and a method for manufacturing the gas sensor includes coating a graphene oxide layer and reducing a part of the graphene oxide layer.

The invention discloses a tabular hollow fiber ceramic membrane element formed by connecting a plurality of hollow fiber ceramic membranes in parallel and a preparation method thereof. The invention is characterized in that a plurality of hollow fiber ceramic membrane green bodies, one end of which is open and the other end of which is closed or both ends of which are open are sintered at the temperature ranging from 900 to 1600 DEG C for 5 to 20 hours in a state of mutual close contact by aligning both ends and driving single layer to stand side by side; or the tabular hollow fiber ceramic membrane green bodies, which are prepared by a single layered parallel connection of hollow fiber ceramic membranes using extrusion, are sintered at a high temperature ranging from 900 and 1600 DEG C for 5 to 20 hours after being dried. Compared with a single fiber hollow ceramic membrane element, the mechanical strength of the tabular hollow fiber ceramic membrane element is significantly enhanced, thus being beneficial to preparing large-size membrane elements, enhancing the reliability and the service life of the ceramic membrane; moreover, owing to the decrease of the assembly dispersity, the packing density of the membrane components is further enhanced far from being lowered. The tabular hollow fiber ceramic membrane element can be used for manufacturing gas or liquid separation and purification device or high temperature heat exchanger.

The invention discloses a gas-sensitive material for detecting NO2 and a method for manufacturing a gas-sensitive element made of the gas-sensitive material. The gas-sensitive material is prepared into a SnO2 nano-fiber with a rough surface and a hollow tubular structure by adopting an electrospinning method and high-temperature processing, the hollow SnO2 nano-fiber is of a rutile structure, the SnO2 nano-fiber diameter is about 250-300nm, and the thickness of a particle layer is about 40nm. Au particle modification is performed on the surface of SnO2 in an in-situ reduction manner without changing the crystal structure of SnO2. The specific surface area of the material is increased by the one-dimensional hollow nano-structure characteristic of the gas-sensitive material, the gas-sensitive performance of SnO2 is obviously improved by precious metal modification, and higher sensitivity to NO2 and a larger measurement range are presented. The obtained material is applied to the surface of a ceramic tube, annealing is performed, and a calcined ceramic tube core and a nickel-chromium heating wire are welded to a base, accordingly, the gas-sensitive element is manufactured.

A gas sensor element has a protection layer smaller in heat capacity than a conventional protection layer formed by a dipping process. A gas sensor includes the gas sensor element. The gas sensor element is manufactured by a method of manufacturing. The gas sensor element includes at least one space formed between a protection layer and an element body. The space is positioned over at least one of four vertexes of a forward end of the element body at a location at which the thickness of the protection layer is likely to become small. Therefore, it is possible to restrain breakage of the vertexes of the forward end of the element body which could otherwise result from thermal shock stemming from adhesion of water. The protection layer of the gas sensor element can be reduced in thickness and thus in heat capacity as compared with a conventional protection layer.

Disclosed herein is a gas sensor that comprises a sensor cell, a sensing side support layer, and a reference side support layer. The sensor cell comprises an electrolyte layer, a sensing electrode and a reference electrode, wherein the sensing electrode is disposed on a sensing side of the electrolyte layer, and the reference electrode is disposed on a reference side of the electrolyte layer. The reference side has a reference thickness of about 40% to about 160% of a sensing thickness of the sensing side. Methods for manufacturing gas sensors are also disclosed.

Gas-generating devices with grain-retention structures and related methods and systems are described. In particular, gas-generating devices having at least one retention structure fixed to a frame and positioned between adjacent gas-generant grains arranged in a longitudinal stack. Fire suppression systems comprising such gas-generating devices are also described. Additionally, methods of manufacturing gas-generating devices, as well as methods of generating a gas and methods of suppressing a fire utilizing such gas-generating devices are described.

A laminated gas sensor element includes a plurality of laminated plate-shaped members, including a plate-shaped insulating member in which a solid electrolyte body is embedded and which has four sides. The solid electrolyte body is formed such that, as viewed in a plane orthogonal to a thickness direction of the insulating member including the solid electrolyte body, a portion of the contour of the solid electrolyte body facing at least one side of the four sides of the insulating member has an arcuate shape projecting toward the one side.

The present invention provides: a method of manufacturing a gas barrier film, which is manufactured at high productivity, and has extremely high gas barrier performance and stability thereof with time, excellent surface smoothness and bending resistance, and high durability; a gas barrier film obtained using the method; and an organic photoelectric conversion element using the gas barrier film. In the method, after forming a coated layer by applying a coating liquid containing polysilazane to a substrate, a gas barrier layer is formed by applying vacuum ultraviolet light to the coated layer surface thus formed. The method is characterized in that the coated layer is irradiated with the vacuum ultraviolet light, while drying the solvent in the e coated layer.

The present invention discloses a copper oxide doped tin dioxide base ammonia gas sensitive sensor manufacturing method. The method comprises the following steps: sequentially placing a Cu target material with a purity of 99.99% and a Sn target material with a purity of 99.99% on two radio frequency sputtering targets, and placing a Al2O3 ceramic tube on a sample holder; carrying out vacuum pumping on the system before sputtering until air pressure of the system achieves 10<-3>-10<-5> Pa; opening gas path valves of oxygen gas and argon gas, wherein the air pressure is maintained to 6*10<0>-3*10<-1> Pa; carrying out pre-sputtering for 10 min, then removing a blocking disc, concurrently adjusting a power of the Sn target to 60-80 W, adjusting a power of the Cu target to 20-60 W, and sputtering for 45 min; opening the vacuum chamber to take the sample when the air pressure is 10<5> Pa; and carrying out annealing for 1-3 h at a temperature of 300-500 DEG C in a muffle furnace to obtain the finished product. The manufactured gas sensitive element provides good selectivity for ammonia gas, can quickly and effectively detect ammonia gas from a lot of mixing gas, and has characteristics of high sensitivity and short response recovery time.

A method for manufacturing a magnetism measurement device which measures a magnetic field generated from a living body, includes: arranging an ampoule made of borosilicate glass and having a hollow part filled with a solid alkali metal, in a void in a cell section made of quartz glass, and then sealing the cell section; and casting a pulse laser beam on the ampoule through the cell section and thus forming a penetration hole in the ampoule. The pulse laser beam has an energy of 20 μJ/pulse to 200 μJ/pulse. The absorption coefficient of quarts glass for the pulse laser beam is lower than the absorption coefficient of borosilicate glass for the pulse laser beam.

The invention provides an oxygen-removal method of oxygen-containing coal-bed gas. The oxygen-removal method is characterized in that oxygen-containing coal-bed gas and manufactured gas are fed into a reactor with a catalyst; and carbon monoxide and hydrogen in the manufactured gas react with oxygen in the oxygen-containing coal-bed gas in the presence of the catalyst to produce carbon dioxide and water so that oxygen removal is realized.

The invention relates to a method for manufacturing a gas collecting tube component. The method comprises the following steps of: 1) preparing a main gas collecting tube made of a stainless steel material; 2) preparing a plurality of gas collecting branch tubes made of carbon steel materials; 3) fixing the main gas collecting tube, the gas collecting branch tubes and a tube orifice sealing cap obtained in the steps 1 and 2 through interference or transition fit; and 4) welding the assembled parts to form the gas collecting tube component. The invention also provides an air-conditioning system. The material manufacturing cost can be greatly reduced; and meanwhile, according to novel materials, a novel method for manufacturing the gas collecting tube component is adopted, the airtight reliability and corrosion resistance of the product are improved, the process is simplified, the pickling step is canceled, and the environmental pollution can be avoided through the pickling process.

A gas sensor element in an air/fuel ratio sensor includes an element body and a protection layer having two layers (a first layer and a second layer). The gas sensor element has at least one separation portion in the form of a space between the first layer and the second layer. The gas sensor element can temporarily accumulate, in the at least one separation portion, water which adheres to the surface of the protection layer and penetrates into the protection layer. Thus, as compared with a protection layer which is identical in thickness to the protection layer, but does not have separation portions, water adhering to the protection layer is less likely to reach the element body. Therefore, there can be restrained breakage of an end of the element body which could otherwise result from thermal shock stemming from adhesion of water.

A gas diffusion substrate includes a non-woven network of carbon fibres, the carbon fibres are graphitised but the non-woven network has not been subjected to a graphitisation process. A mixture of graphitic particles and hydrophobic polymer is disposed within the network. The longest dimension of at least 90% of the graphitic particles is less than 100 μm. A process for manufacturing gas diffusion substrates includes depositing a slurry of graphitised carbon fibres onto a porous bed forming a wet fibre network, preparing a suspension of graphitic particles and hydrophobic polymer, applying onto, and pulling the suspension into, the network, and drying and firing the network. Another process includes mixing a first slurry of graphitic particles and hydrophobic polymer with a second slurry of graphitised carbon fibres and liquid forming a third slurry, depositing the third slurry onto a porous bed forming a fibre-containing layer, and drying and firing the layer.

Provided is a method of manufacturing a gas supply structure for use in an electrostatic chuck apparatus having an electrostatic chuck on the upper surface side of a metal base (1), the gas supply structure being capable of eliminating contamination due to nonuniform cooling gas jetting quantities and deposition of a thermally spraying material and the like. The method of manufacturing the gas supply structure for supplying a cooling gas supplied from the lower surface side of the metal base (1) to the back surface of a substrate (W) attracted to an upper insulating layer (6) side, through a gas supply path (3) provided on the metal base (1), the method including: prior to a step of forming a lower insulating layer (4) by thermally spraying a ceramic powder on the upper surface side of the metal base (1), a step of forming an attracting electrode (5), and a step of forming the upper insulating layer (6), a step of blocking a gas supply path outlet (3a) on the upper surface side of the metal base (1) with an adhesive (8), the adhesive containing a filler made of the same material as that of the ceramic powder that is used for forming the lower insulating layer (4); and a step of opening a hole toward the gas supply path outlet (3a) of the metal base (1) after forming the upper insulating layer (6), to thereby form a through hole (9) reaching the gas supply path (3).