411 results about "Non catalytic" patented technology

Polycrystalline compacts include smaller and larger hard grains that are interbonded to form a polycrystalline hard material. The larger grains may be at least about 150 times larger than the smaller grains. An interstitial material comprising one or more of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal may be disposed between the grains. The compacts may be used as cutting elements for earth-boring tools such as drill bits, and may be disposed on a substrate. Methods of making polycrystalline compacts include coating smaller hard particles with a coating material, mixing the smaller particles with larger hard particles, and sintering the mixture to form a polycrystalline hard material including interbonded smaller and larger grains. The sizes of the smaller and larger particles may be selected to cause the larger grains to be at least about 150 times larger than the smaller grains.

A nanowire, nanosphere, metallized nanosphere, and methods for their fabrication are outlined. The method of fabricating nanowires includes fabricating the nanowire under thermal and non-catalytic conditions. The nanowires can at least be fabricated from metals, metal oxides, metalloids, and metalloid oxides. In addition, the method of fabricating nanospheres includes fabricating nanospheres that are substantially monodisperse. Further, the nanospheres are fabricated under thermal and non-catalytic conditions. Like the nanowires, the nanospheres can at least be fabricated from metals, metal oxides, metalloids, and metalloid oxides. In addition, the nanospheres can be metallized to form metallized nanospheres that are capable as acting as a catalyst.

Preferred embodiments provide a method for forming at least one catalyst nanoparticle on at least one sidewall of a three-dimensional structure on a main surface of a substrate, the main surface lying in a plane and the sidewall of the three-dimensional structure lying in a plane substantially perpendicular to the plane of the main surface of the substrate. The method comprises obtaining a three-dimensional structure on the main surface, the three-dimensional structure comprising catalyst nanoparticles embedded in a non-catalytic matrix and selectively removing at least part of the non-catalytic matrix at the sidewalls of the three-dimensional structure to thereby expose at least one catalyst nanoparticle. According to preferred embodiments a method is also provided for forming at least one elongated nanostructure, such as e.g. a nanowire or carbon nanotube, using the catalyst nanoparticles formed by the method according to preferred embodiments as a catalyst. The methods according to preferred embodiments may be used in, for example, semiconductor processing. The methods according to preferred embodiments are scalable and fully compatible with existing semiconductor processing technology.

Coated articles (19) that comprise components, made of carbon fiber or carbon-carbon composites which may be configured, for example, as aircraft landing system brake discs. The components (10) are coated with a system that includes a phosphorus-containing undercoating (11) having a specified formulation and a boron-containing overcoating (12) having specified formulation. The coated articles of the invention, e.g., aircraft brake discs, are protected against catalytic oxidation when the article is subjected to temperatures of 800° C. (1472° F.) or greater. Also, a method of protecting a component made of a carbon fiber or carbon-carbon composite simultaneously against catalytic oxidation (e.g., catalyzed by de-icer compositions) and high temperature non-catalytic oxidation.

A continuous, non catalytic process for producing biodiesel from vegetable oils and ethanol or methanol includes pumping a mixture of vegetable alcohol through a pump towards a tube shaped reactor, wherein the mixture is submitted to high pressure and temperature, where the resulting product is non reacted alcohol, glycerin and a mixture of esters (biodiesel) which is directed to the reservoir at the reactor outlet where an upper phase of alcohol is redirected through an alcohol return pipe to the pump inlet, and the intermediate phase, biodiesel, and the lower phase (mostly of glycerin) are led to the separation reservoir or decantation tank, where the alcohol is removed through the alcohol return pipe, being biodiesel and glycerin the final products, which are then collected for the end to which they were aimed.

The invention discloses application of manganese dioxide for preparing a cathode of a microorganism fuel battery. The method comprises the following steps: the manganese dioxide is taken as a catalyst, the mixture of the catalyst, a conductive carbon material and a caking agent is coated on a conductive substrate to prepare the cathode of the microorganism fuel battery and a membrane composite cathode applied to the microorganism fuel battery. Compared with a non-catalytic electrode, MnO2 is taken as a cathode catalyst for remarkably increasing the reducing speed, reducing the polarization of the cathode and improving the energy output of the microorganism fuel battery; compared with the prior Pt catalyst, MnO2 has low price and wide source, and the microorganism fuel battery assembled by the catalyst of the cathode can operate stably for a long time and has high power output. The manganese dioxide for preparing the microorganism fuel battery electrode provides solid foundation for the commercial application of the microorganism fuel battery.

A low-cost, high-temperature heat exchanger is made from a notched piece of metal, the metal being folded back and forth upon itself to form a monolith. The notches in the metal piece create openings, communicating with distinct sides of the monolith. Ducts are attached to the openings. Cut pieces of corrugated metal, which may have a catalyst coating, are inserted between folds of the monolith. The heat exchanger may be used as part of a fuel cell system, or in other industrial applications, to recover waste heat, or to conduct various catalytic and non-catalytic reactions. The invention also includes an element, or building block, for a high-temperature heat exchanger, including a folded metal monolith with metal combs inserted, the monolith and the combs defining seams which are hermetically sealed.

The invention discloses a method for preparing synthesis gas from coke oven gas. Desulfurized and purified high-temperature carbonization gas is taken as a raw material gas, and oxygen, carbon dioxide and vapor are taken as gas transforming agents; and the method comprises the following steps: preheating the raw material gas and the gas transforming agents, introducing into a reactor for mixing, and simultaneously generating autothermal non-catalytic conversion reaction; and then introducing mixed gas after the non-catalytic conversion reaction into a catalyst bed layer for catalytic reforming reaction to prepare the synthesis gas. In the method, the consumption of the catalyst is low, the conversion rate is high, the ratio of hydrogen to carbon of the synthesis gas has strong controllability, the comprehensive utilization of energy is realized, the coke oven gas and the carbon dioxide are utilized as raw material gases, and the method for preparing the synthesis gas from the coke oven gas is economic, environment-friendly and low-carbon.

A cost-effective solution is provided for eliminating refinery process waste, including spent catalytic and non-catalytic adsorbent materials, as well as adsorbate process reject materials derived from desorption, while minimizing conventional waste handling demands. An asphalt composition includes asphalt and spent adsorbent material from a solvent deasphalting unit. The asphalt can comprise asphaltic material obtained from a solvent deasphalting unit, and spent adsorbent material in the asphalt composition was previously utilized in the solvent deasphalting unit. The asphalt composition can also include process reject materials.

A method of operating a syngas generator within a desired temperature range, despite a need for intermittent syngas output, involves switching between operating the syngas generator in a rich mode and a lean mode. Operation of the syngas generator in both the rich mode and the lean mode sustains the operating temperature of the syngas generator within that desired temperature range, particularly for non-catalytic reactors. The method of switching from the lean mode to the rich mode of operation can include decreasing the oxygen-to-carbon ratio of reactants supplied to the syngas generator. The flow rate of one or more of the reactant streams supplied to the syngas generator can be actively controlled in order to switch operation of the syngas generator between the rich and lean modes.

The present invention relates to a non-catalytic biomass burner that may be used to burn a variety of fuel types at high efficiencies. The burner may include a cylindrical combustion chamber with an auxiliary igniter to heat the fuel in the combustion chamber until desirable combustion temperatures are reached. Fuel may be added to the chamber via a fuel feed assembly, and the rate of fuel addition to the chamber by the fuel feed assembly may be controlled by a computer. A fan located on the distal side of a flue pipe from the chamber may also be provided that pulls air into the chamber through one or more air inlets that are designed to encourage cyclonic air and exhaust flow in the chamber. Methods are further provided for controlling the manner of operation of the burner by a computer that may be instructed by a computer program code.

The invention relates to a method for producing gas-based directly reduced iron by utilizing the non-catalytic conversion of a coke-oven gas, and a system thereof. The method comprises the following steps: mixing the coke-oven gas obtained after routine purification and fine desulfurization treatment with a mixed gas comprising one or above two of a converter gas, a blast furnace gas and a purified tail gas to form a raw material gas mixture, and partially combusting the raw material gas mixture and an oxygen-containing gas at a converter burner outlet at a controlled flame temperature of 1100-2300DEG C for the conversion of hydrocarbons in the coke-oven gas and carbon dioxide or water vapor to generate a synthetic gas containing H2 and CO; and allowing the synthetic gas containing H2 and CO to enter a shaft furnace and reduce iron oxide in order to produce reduced iron, and cooling, washing, decarburizing, desulphurizing and purifying a reduced tail gas discharged from a shaft furnace to obtain a purified tail gas. The invention also provides a system for producing the gas-based directly reduced iron by utilizing the non-catalytic conversion of the coke-oven gas.

A gas turbine engine combustor (26) including a primary combustion chamber (28), a mixer element (34), a mixing chamber (46) and a secondary combustion chamber (48). The primary combustion chamber receives a fuel oxidizer mixture flow (22) and discharges a partially oxidized mixture flow (32). The mixer element includes a plurality of flow channels (36, 38) for separating the partially oxidized mixture from a flow of an oxidizer (24) and producing a plurality of partially oxidized mixture flows interspersed with a plurality of oxidizer fluid flows. The mixer element may include a plurality of tubes (62) retained by an upstream tubesheet (70) and a downstream tubesheet (76). The mixer element may function as a heat exchanger to heat the oxidizer fluid flow and to cool the partially oxidized mixture flow upstream of the post-mixing chamber.

The present invention relates to a non-catalytic process for reducing NO_x concentrations in the regenerator off-gas stream of a fluid catalytic cracking unit. More particularly, the present invention relates to the injection of a reducing agent in combination with a readily-oxidizable gas into a regenerator off-gas stream to reduce at least a portion of the NO in the regenerator off-gas stream, then contacting the regenerator off-gas stream with an effective amount of a treating solution under conditions such that at least a fraction of the oxidizable NO_x species present in the regenerator off-gas stream is oxidized to higher oxides, and subsequently removing at least a fraction of these higher oxides from the off-gas stream. One embodiment of this invention also relates to the use of a reacted caustic solution from a wet gas scrubber for the removal of at least a fraction of the higher oxides.