15results about "Fuels" patented technology

A system and methods for additively manufacturing energetic particles such as polymer-free nanothermite aerogels are provided. An ink containing graphene oxide (GO), Al, and Bi2O3 nanoparticles in propylene carbonate is prepared. The method includes in-situ reduction of graphene oxide (GO), by ethylenediamine, during extrusion and printing of the ink onto a substrate with a simple printing system. The printed aerogels include reduced GO as a porous scaffold for the aerogel with Al and Bi2O3 clusters embedded therein. The linear burning rate of the printed aerogels reached a higher rate (10m / s) that reported for typical polymer-assisted 3D printed nanothermite products. Also provided is a framework for optimizing a nanothermite fuel grain structure to match a desired combustion profile. The framework was used to model optimal fuel layer thicknesses, radii and burn rates for simple thrust, complex thrust and pressure matching cases.

Provided are systems and methods for synthesis of metastable intermolecular composites, specifically energetic nanocomposites. The method may include dispersing a reductive fuel within a first aqueous solution and combining the reductive fuel solution with a second aqueous solution comprising a metal oxide and base to create a reductive fuel-metal oxide / base solution. The reductive fuel-metal oxide / base solution is mixed and solid material is filtered and collected from the mixture. The solid material is heated to obtain reductive fuel-metal oxide energetic nanocomposites. The ratio of base to metal oxide can be varied to achieve different structures of including core-shell or well-mixed nanocomposites. The reductive fuel may be aluminum nanoparticles, the metal oxide may be copper oxide, and the base may be ammonia. The method can be used for mass production of energetic nanocomposites and the structure of the energetic nanocomposites can be varied to tune the energetic performance of the energetic nanocomposites.

Commercially available sawdust-based agglomerates / compressions are brittle and often require the use of an adhesive to act as a binder and improve their strength and moisture resistance. The use of these adhesives raises several questions regarding their environmental impact: the polluting manufacturing process, the petrochemical-derived composition, the emission of volatile organic compounds, the end-of-life management of the material, and its recycling. The materials of the invention address all of the aforementioned drawbacks. These 100% bio-based materials are obtained by hot compression of tree leaf powder, either alone or mixed with sawdust, to produce panels, bricks, or any other thermoformed object using, for example, a hydraulic press or a heated extruder.The materials of the invention exhibit a significant improvement in their mechanical properties and also offer an environmentally friendly alternative to products currently on the market. The invention also relates to the process for obtaining and the products obtained from these materials.

This application relates to a co-processing system and method for cold-rolled sludge. The system includes: a pretreatment unit for performing heating-fluidization, solid-liquid separation, and dehydration treatments on the cold-rolled sludge; a quantitative distribution unit including an intermediate storage tank, a transfer pump, a flow regulating valve, and a fully electrically heated pipeline; and a multi-process co-processing unit including receiving points for the coking, sintering, cold solidification, and auxiliary combustion processes. The pretreatment unit first "unlocks" the viscosity, the quantitative distribution unit then "locks" it to low viscosity, and the multi-process co-processing unit finally "resets" the viscosity to zero. These three processes are sequentially linked, forming a complete technical chain of "viscosity reduction—stable transportation—full utilization," transforming cold-rolled sludge from high-viscosity hazardous waste into a cryogenic fluid fuel / raw material that can be transported over long distances via pipelines, accurately measured, and utilized as a resource.

The application discloses a catalyst for preparing hydrocarbon-based biodiesel and a preparation method and application thereof, and belongs to the technical field of biodiesel, wherein stearic acid is used as a raw material for preparing hydrocarbon-based biodiesel, and a catalyst of metal nickel (Ni / XC) supported by Xanthoceras sorbifolia Bge shell carbon is used to convert stearic acid into hydrocarbon-based biodiesel (main product is heptadecane) through a deoxygenation reaction under the condition of no external hydrogen gas, the catalyst of the application promotes the deoxygenation reaction through metal-acid dual functional sites supported by the catalyst, and can inhibit the formation of carbon deposition, and the circulation usability of the Ni / XC is improved.

Processes for producing high biogenic concentration Fischer-Tropsch liquids derived from the organic fraction of municipal solid wastes (MSW) feedstock that contains a relatively high concentration of biogenic carbon (derived from plants) and a relatively low concentration of non-biogenic carbon (derived from fossil sources) wherein the biogenic content of the Fischer-Tropsch liquids is the same as the biogenic content of the feedstock.

The present invention provides a method (100) for operating a system (1) including a centrifuge (2) for separating at least one liquid phase and a sludge phase from a liquid feed mixture. The method (100) includes alternating between a first and a second operating mode. The first operating mode includes step a) feeding (101) the liquid feed mixture to be cleaned to the centrifuge (2), the liquid feed mixture having a first temperature, and step b) discharging (102) at least one separated liquid phase from the centrifuge (2). The second operating mode includes step c) stopping (103) the supply of the liquid feed mixture to the centrifuge (2) and step d) reducing (104) the temperature of the liquid feed mixture to a second temperature and / or reducing (105) the flow rate of the liquid feed mixture. The present invention also provides a system (1) for separating at least one liquid phase and a sludge phase from a liquid feed mixture.

This invention discloses a multi-energy synergistic hydrogen production and green ammonia production system based on an energy island. Integrated into an offshore energy island platform, it leverages wind, solar, and wave energy synergy to provide green electricity. The system employs reverse osmosis seawater desalination, proton exchange membrane electrolysis of water to produce hydrogen, and air liquefaction separation to produce nitrogen. Hydrogen and nitrogen gases are compressed in multiple stages and mixed with circulating gas. The mixture is preheated to the reaction temperature by high-temperature reaction products and then enters the ammonia synthesis reactor to catalytically generate ammonia. Energy is recovered and cooled through a three-stage heat exchange network, followed by purification via an ammonia separator and low-pressure flash evaporation to obtain a green ammonia product with a mass fraction of 99.5%. Unreacted hydrogen and nitrogen mixtures are compressed and refluxed by a circulating compressor, achieving efficient recycling of raw materials. This invention addresses the limitations of space and fluctuating energy supply on offshore energy islands by introducing seawater as a cooling medium to recover waste heat, solving the problems of high energy consumption and unsuitability for traditional ammonia synthesis processes, and achieving efficient conversion and comprehensive utilization of multiple renewable energy sources at sea.

The present invention relates to an apparatus and a method for the desorption of residues from a carbon product, said method comprising the steps of: introducing a carbon product containing residues (2) into a desorber (1); heating the carbon product (2) within the desorber (1) to a temperature > 700°C, preferably between 700°C - 1500°C, so that the residues in the carbon product (2) are desorbed; introducing a gas stream (3) into the desorber (1) in order to remove the desorbed residues from the carbon product (2) by means of the gas stream (3) and to discharge them from the desorber via a gas outlet (4); transporting the carbon product within the desorber (1) and discharging the carbon product freed of residues (2') from the desorber (1).

The invention discloses an ammonia fuel modified fusion fuel preparation system and a fuel verification method. The system comprises a gas supply unit, an ammonia supply unit, an ammonia-hydrogen mixing unit, an ammonia-hydrogen aftertreatment unit, a fuel injector and a fuel verification unit. The ammonia-hydrogen mixing unit injects hydrogen and liquid ammonia into the ammonia-hydrogen mixing unit to form liquid ammonia-hydrogen fused fuel; an outlet of the ammonia-hydrogen mixing unit is respectively communicated with the ammonia-hydrogen post-processing unit, the fuel injector and the outside; and the ammonia-hydrogen post-treatment unit absorbs ammonia gas from the ammonia-hydrogen mixing unit and the fuel injector, and then hydrogen purification and storage are carried out. The fuel verification unit is used for receiving and measuring the fuel ejected from the fuel injector so as to verify the hydrogen content of the fuel; and comparing the actually obtained hydrogen content with the preset theoretical hydrogen content of the fusion fuel to verify the influence of pressure fluctuation caused in the fusion fuel application process on the actual value of the hydrogen solubility, thereby preparing the corresponding ammonia-hydrogen fusion fuel according to the working requirements of different ammonia-hydrogen engines.

In culturing a poly(3-hydroxyalkanoate)-producing microorganism, an oil A and an oil B are used as the carbon source. The proportion of the oil B to the total amount of the oils A and B used during the entire course of the culturing is 10 wt % or more. The oil A is the total oil used until the amount of the poly(3-hydroxyalkanoate) accumulated in the poly(3-hydroxyalkanoate)-producing microorganism reaches 16 wt %, and the average unsaturated fatty acid content in constituent fatty acids is from 25 wt % to less than 75 wt % in the total oil A. The unsaturated fatty acid content in constituent fatty acids in the oil B is higher than the average unsaturated fatty acid content in the total oil A.

The present invention relates to an apparatus and a method for the desorption of residues from a carbon product, the method comprising the following steps: introducing a carbon product (2) containing residues into a desorber (1); heating the carbon product (2) within the desorber (1) to a temperature > 700°C, preferably between 700°C and 1500°C, so that the residues of the carbon product (2) are desorbed; introducing a gas stream (3) into the desorber (1) to remove the desorbed residues from the carbon product (2) by means of the gas stream (3) and to discharge them from the desorber via a gas outlet (4); transporting the carbon product within the desorber (1) and discharging the residue-free carbon product (2') from the desorber (1).

The present application relates to the field of fuel technology, and provide a kind of liquid ammonia mixed fuel for internal combustion engine and its preparation method, the liquid ammonia mixed fuel is liquid under the condition that pressure is greater than or equal to the saturated vapor pressure of ammonia in the environment temperature;Liquid ammonia mixed fuel in the liquid state contains liquid ammonia and polymethoxy dimethyl ether with volume ratio of (50~99.5) : (0.5~50).The present application is prepared by selecting and optimizing the raw material ratio and mixing process of mixed fuel, and the PODEn under high content of liquid ammonia and liquid ammonia mixed fuel are obtained, the combustion efficiency of ammonia fuel is realized by PODEn, in addition, the prepared mixed fuel also solves the knock problem of PODEn under heavy load.

A method and associated system for synthesizing energetic particles, the method including providing a metal powder, dispersing the metal powder in a first fluid to form a first suspension, contacting the first suspension with an oxide precursor, an aqueous ammonium hydroxide solution, and a second fluid to produce a first product, collecting product solids, and inductively heating the product solids to produce energetic core-shell particles.