550 results about "Thermo chemical" patented technology

The invention relates to processes that efficiently convert carbon-containing materials, such as biomass, into products in such a manner that the energy, carbon, and mass content of the materials are efficiently transferred into such products. Such methods include converting the materials into at least one intermediate by a biological conversion process and at least one intermediate by a thermochemical conversion process and reacting the intermediates to form the product. Such methods have a chemical energy efficiency to produce the product that is greater than the chemical energy efficiency of a solely biological conversion process to produce the product and that is greater than the chemical energy efficiency of a process in which all of the material is initially subjected to a thermochemical conversion step as part of the process to produce the product.

Production of synthetic liquid hydrocarbon fuel from carbon containing moieties such as biomass, coal, methane, naphtha as a carbon source and hydrogen from a carbon-free energy source is disclosed. The biomass can be fed to a gasifier along with hydrogen, oxygen, steam and recycled carbon dioxide. The synthesis gas from the gasifier exhaust is sent to a liquid hydrocarbon conversion reactor to form liquid hydrocarbon molecules. Unreacted CO & H2 can be recycled to the gasifier along with CO2 from the liquid hydrocarbon conversion reactor system. Hydrogen can be obtained from electrolysis of water, thermo-chemical cycles or directly by using energy from carbon-free energy sources.

A method for manufacturing carbon nanotubes with an integrally attached outer graphitic layer is disclosed. The graphitic layer improves the ability to handle and manipulate the nanometer size nanotube device in various applications, such as a probe tip in scanning probe microscopes and optical microscopes, or as an electron emitting device. A thermal chemical vapor deposition reactor is the preferred reaction vessel in which a transition metal catalyst with an inert gas, hydrogen gas and a carbon-containing gas mixture are heated at various temperatures in a range between 500° C. and 1000° C. with gases and temperatures being adjusted periodically during the reaction times required to grow the nanotube core and subsequently grow the desired outer graphitic layer.

To deal with climate change, the present invention provides an eco-engineering for systematic carbon mitigation, in particular, a comprehensive carbon management system with a group of Stabilized Functional Carbons (SFCs) to reduce the total amount of carbons in atmosphere. SFCs are sourced and manufactured from the carbon-fixed biomass by one of the seven thermo-chemical treatments or one dehydration treatment with no less than 75% carbon conversion rates of the source material. The present invention transforms the perishable biomass into SFCs, which act as a carbon sink with stability and safety for at least 40 years' storage. The primary eco-friendly carbon and non-carbon mitigation are achieved by the sourcing, manufacturing and storage of SFCs. The advanced eco-friendly carbon and non-carbon mitigation are achieved at various pollution emission sources by the resource utilization of SFCs. An annual total amount of 0.5-10 billion tons of carbon emission could be reduced globally.

A refractory, oxidation-resistant, and corrosion-resistant protective coating for application to a substrate, in particular for application to parts of turbines or aircraft propulsion engines, is described, including a spray coating made of a thermally sprayed, primarily metallic material, the coating being at least partially subjected to a thermochemical aluminum (Cr, Si) deposition process having a specifically high aluminum deposition activity after the application of the protective coating to the substrate, in such a way that the protective coating has alloy gradients of Al (Cr, Si) which increase from the substrate surface to the coating surface and isolated globulitic metal oxide particles. Furthermore, a method for manufacturing this protective coating and its use are described.

The invention provides a method for preparing a complete methanation catalyst for a hydrothermal chemical process. The catalyst comprises the following components: 10 to 75 percent of active nickel ingredient, 10 to 90 percent of high-temperature resistant carrier and 0.1 to 15 percent of rare-earth auxiliary agent, wherein the content is counted on the basis of metal oxide, and the percentage is weight percentage of the total weight of the active ingredient, the carrier and the auxiliary agent. The preparation method comprises the following steps of: (a) forming a catalyst precursor by using the hydrothermal chemical synthesis process; and (b) preparing the obtained catalyst precursor into the complete methanation catalyst by filtering, washing, drying, roasting, forming, re-roasting and reducing. The method is convenient for crystallization and precipitation of catalyst materials, and has simple process and good repeatability. The method provides guarantee for meeting the current increasing clean energy requirement, and has irreplaceable important effect on the enhancement of energy / resource safety at the same time.

The invention provides a method for preparing phenolic chemicals through the thermo-chemical conversion of industrial lignin. The method is as follows: under the common functions of solid acid catalyst and hydrogen supply solvent, industrial lignin performs atmospheric thermo-chemical conversion in high boiling point organic reaction medium to prepare homogeneous low molecular weight organic matter with rich phenolic compounds such as phenol, methoxyphenol, dimethoxyphenol and 2-methoxy-4-methylphenol, and the organic reaction medium is recycled through the technologies such as vacuum distillation. The method has simple process, good stability and low production cost; and the yield of the prepared phenolic compounds is more than 54%. The method plays an important role in the high-valued comprehensive utilization of the renewable resource, namely ndustrial lignin; and the converted phenolic chemicals can be used to synthesize phenolic resin, prepare high efficiency cement water-reducing agent and further separate, purify and prepare bio-chemicals. Particularly, by adopting the method, the lignin in papermaking black liquid and preparation residue of biological fuel ethanol prepared from cellulose can be converted to phenolic chemicals; and the method has wide application prospect.

A carbon nanotube fabricating system and method that includes a process chamber that supports a substrate. The system employs a high intensity thermal radiation source for heating the chamber, and a temperature regulation chuck that supports the substrate. In process, the chuck cools the substrate so as to prevent damage to the substrate, while CNT fabrication is preferably regulated to occur in a process window.

The invention discloses a method for preparing an engine fuel gas by using biomass and / or organic waste and particularly relates to a method for producing high-heat value fuel gases for engines (or internal combustion engines) for vehicles and ships by performing primary medium-temperature thermal cracking of a raw material, performing secondary high-temperature thermal cracking and / or catalytic cracking, refining fuel gas, mixing the fuel gas and other steps and by a thermochemical conversion technique.

The present invention discloses the preparation process of active semi-coke H2S desulfurizer. The active semi-coke H2S desulfurizer is prepared with lignite semi-coke, anthracite or soft coal semi-coke and other carbon containing material and through first pressurized hydrothermal chemical modification, subsequent soaking with cuprammonia, CuSO4 solution or K2CO3 solution, drying and high temperature calcining. The present invention has the features of wide material source, low cost, repeated use of the adsorbent product, final use in waste water treatment and as fuel and no secondary pollution. The present invention may be used widely in purifying gas in various plants and environment protecting industry.

A thermo-chemical cross-linking preparation method of silicone carbide fiber and a cross-linking device relates to a silicone carbide fiber, in particular to a method that the thermo-chemical cross-linking of organometallic compounds is used for the preparation of silicone carbide fiber and the cross-linking device of the method, which provides a thermo-chemical cross-linking preparation method of silicone carbide fiber and a cross-linking device of the method and provided with a quartz glass tube, an inlet tube, an outlet tube, a sealing steel sleeve, a gas flow control valve, a heating coil and a quartz boat. The heating coil is arranged outside of the quartz glass tube. The inlet and outlet tubes are respectively linked on both ends of the quartz glass tube through the sealing steel sleeve, and the quartz is disposed inside the quartz glass tube. The PCS and a cross-linking agent are dissolved in the trtrahydrofuran, and the slurry is produced. The slurry is in ageing and with the dry-spinning, thus the precursor fiber is produced. The precursor disposed into the quartz is then disposed into the cross-linking device for the thermo-chemical cross-linking. The PCS cross-linking fiber is obtained, which is then disposed into a high-temperature furnace for pyrolysis and sintering. Therefore, the silicon carbide fiber is produced.

For example an aircraft includes a fluid tempering arrangement to supply a gaseous and / or liquid, heated and / or cooled, fluid such as water. At least one thermochemical reservoir is in heat exchange relation with a conduit system, having at least one valve and a controller that controls the transfer of heat between the fluid and the thermochemical reservoir to adjust the temperature of the fluid provided to an outlet. Preferably two interconnected thermochemical reservoirs respectively contain hydride-forming metals having different hydrogen sorption-desorption temperatures. A method involves supplying and chemically storing heat energy in at least one thermochemical reservoir, then performing a reverse reaction to release and transfer heat from at least one thermochemical reservoir to the fluid, preferably involving the sorption and desorption of hydrogen in respective hydride-forming metals in two reservoirs exhibiting different hydrogen reaction temperatures. Heat energy produced electrically during low electrical demand can be chemically stored and later released for heating the fluid during high electrical demand.

The invention discloses a device for producing synthesis gas through biomass gasification and a method of the device. The device mainly comprises a pyrolysis reactor, a gasification reactor, a reforming reactor, a regeneration reactor and heat pipes. In the technological process, biomass is firstly pretreated with a sylvite solution, the pretreated biomass is subjected to pyrolysis in the pyrolysis reactor, coke is gasified in the gasification reactor, the gasification reactor and the regeneration reactor generate hydrogen-rich gas through circulation bed material heat loading and CO2 absorption, and the hydrogen-rich gas enters the reforming reactor to carry out hydrogenation catalytic cracking and reforming on pyrolysis gas. Therefore, the synthesis gas with low tar and high-concentration H2 and CO is obtained through step-by-step pyrolysis, gasification, reforming and regenerative combustion at mild reaction temperature, meanwhile, potassium-rich agricultural fertilizer is by-produced, stepped transfer of heat in the biomass thermo-chemical conversion process is achieved, the energy utilization efficiency is improved, and economic additional value is increased.

The invention discloses a thermo-chemical oil extraction method of offshore thickened oil. The method comprises the following steps of: heating water injected into a heat exchanger to 150-200 DEG C by utilizing high-temperature tail gas or combustion waste heat; then, carrying a surfactant on line by the injected water; injecting a catalyst solution into a section plug; and injecting the surfactant and the catalyst solution into a thickened oil layer to carry out chemically reinforced heat oil displacement. The method disclosed by the invention takes full advantages of local conditions, recycles the waste heat and saves energy; the temperature of the injected water is raised on line to realize low-temperature heat water oil displacement; the conditions are more alleviated (compared with the traditional thickened oil thermo-chemical oil extraction by injecting steam); and the investment cost and the maintenance cost are lower and the energy-saving and synergistic offshore thermo-chemical oil displacement can be realized.

Stress level of a nitride film is adjusted as a function of two or more of the following: identity of a starting material precursor used to make the nitride film; identity of a nitrogen-containing precursor with which is treated the starting material precursor; ratio of the starting material precursor to the nitrogen-containing precursor; a set of CVD conditions under which the film is grown; and / or a thickness to which the film is grown. A rapid thermal chemical vapor deposition (RTCVD) film produced by reacting a compound containing silicon, nitrogen and carbon (such as bis-tertiary butyl amino silane (BTBAS)) with NH3 can provide advantageous properties, such as high stress and excellent performance in an etch-stop application. An ammonia-treated BTBAS film is particularly excellent in providing a high-stress property, and further having maintainability of that high-stress property over repeated annealing.

A catalyst particle which comprises a metallic oxide such as kaolin is provided with the unique structure by mixing small amounts of a polyphosphate structuring agent with the metallic oxide and heating the mixture of metallic oxide and polyphosphate to allow reaction of the structuring agent with the metallic oxide.

The present invention relates to a highly conductive carbon nanotube having bundle moieties with ultra low apparent density less than 0.01 g / cc. More specifically, this invention relates to a highly conductive carbon nanotube prepared by following preparation steps of i) preparing the sphere shape of metal catalyst by spray pyrolysis of catalytic metal precursor solution including low molecular weight polymer, ii) synthesizing carbon nanotube using carbon source and obtained metal catalyst according to thermal chemical vapor deposition method; and iii) obtaining a highly conductive carbon nanotube having bundle moieties with ultra-low bulk apparent density.

The invention discloses a manufacturing method for smoke SO2 sorbent with active carbon base. The feature is it uses lignite or anthracite, soft coal semicoke as material, and it is modified with pressing water thermochemical method, being activated by ozone, immersing KI with the same volume, then it is activated in air or N2. The product has an excellent desulphurizing performance, the price is low, and it can be used for industrial smoke desulphurization.

The invention discloses rare-earth-free fluorescent powder for a white light LED and a preparation method of the rare-earth-free fluorescent powder. The rare-earth-free fluorescent powder is prepared from, by mass, 98-99.98% of metal-organic frame material, 0.01-1% of yellow light or green light emission dyestuff and 0.01-1% of red light emission dyestuff. The preparation method includes the following steps that an aromatic carboxylic acid organic ligand and metal salt are subjected to solvothermal / hydrothermal reaction synthesis to obtain the metal-organic frame material; the metal-organic frame material is soaked in a dyestuff solution, and dyestuff molecules / ions enter the metal-organic frame material. The process is simple, conditions are mild, the yield is high, the prepared fluorescent powder is free of a rare earth element, internal quantum efficiency is higher than 75%, and thermo-chemical stability is high. The rare-earth-free fluorescent powder is combined with a blue light LED chip, the color rending index of the prepared white light LED is higher than 80, the color temperature can be continuously adjusted between 2,500 K and 7,000 K, brightness is high, and under injection at the current density of 20 A / cm<2>, the lighting efficiency is higher than 140 lm / W, and luminous decay is low.

The invention relates to a novel process for jointly degrading and saccharifying crop straw by means of thermo-chemical treatment and enzymatic hydrolysis. The novel process includes steps of 1), mixing the smashed crop straw and soak liquid with each other according to a solid-to-liquid ratio of 1g:9-13ml to obtain mixtures, then carrying out heat-insulation treatment on the mixtures at the temperature of 70-90 DEG C for 6-18h, adding hydrogen peroxide into the mixtures after the heat-insulation treatment is completed, keeping the mixtures at the temperature of 50 DEG C for 6-18h, and fetching and drying the mixtures; 2), transferring the straw obtained in the step 1) into distilled water, adding straw with 20-60 FPU / g of cellulase and straw with 300-600U / g of xylanase into the straw, regulating the pH (potential of hydrogen) of the straw until the pH reaches 4-5, then carrying out enzymatic hydrolysis by the aid of shaking tables at the temperature of 45-50 DEG C for 24-48h, treating the straw at the temperature of 100 DEG C for 30min after enzymatic hydrolysis is completed so as to terminate enzymatic hydrolysis reaction and drying and smashing enzymatic hydrolysis products. The volume of the hydrogen peroxide is 3% of that of the soak liquid. The soak liquid is a lime supernatant with sodium hydroxide, the sodium hydroxide accounts for 2% of the weight of the crop straw, and lime accounts for 5-15% of the weight of the crop straw. The novel process has the advantage that the degradation rate of the straw and the reduced sugar yield (442.85mg / g) of the straw can be obviously increased.

The invention discloses a system and a method for manufacturing a semiconductor thin film solar cell, which can provide continuous and stable thermalchemical temperature-variable reaction conditions in the process of generating a compound thin film by a thermalchemical reaction. The system and the method are particularly suitable for continuously, stably and controllably manufacturing absorbing layers of copper-indium-gallium-selenium polycrystalline thin film solar cells with high yield.