60 results about "Hydromethanation" patented technology

The present invention relates to processes for preparing gaseous products, and in particular methane and / other value added gases such as hydrogen, via the catalytic hydromethanation of a carbonaceous feedstock in the presence of steam and syngas, wherein a hydromethanation reactor is combined with a syngas generator in a particular combination.

The present invention relates to processes for preparing gaseous products, and in particular a hydrogen product stream and optionally a methane product stream, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst.

The present invention relates to an integrated process for preparing combustible gaseous products via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen, a hydromethanation catalyst and optionally oxygen, and generating electrical power from those combustible gaseous products as well as a hydrogen and / or methane by-product stream.

The present invention relates to a 2-mode processes for preparing gaseous products, and in particular a hydrogen product stream, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst in a first mode, and a partial oxidation of methane in a second mode.

The present invention relates to processes for preparing gaseous products, and in particular methane, via the catalytic hydromethanation of a carbonaceous feedstock in the presence of steam, syngas and an oxygen-rich gas stream.

The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of a carbonaceous feedstock in the presence of steam, syngas, a hydromethanation catalyst and an oxygen-rich gas stream.

The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst.

The present invention relates to processes and apparatuses for generating electrical power from certain non-gaseous carbonaceous feedstocks through the integration of catalytic hydromethanation technology with fuel cell technology.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to a fines-depleted methane-enriched synthesis gas, with recycle of recovered particulate fines back into a specified portion of a hydromethanation reactor.

The present invention relates to processes and apparatuses for hydromethanating a vanadium-containing carbonaceous feedstock while recovering at least a portion of the vanadium content originally present in the carbonaceous feedstock.

The present invention relates to processes and apparatuses for generating electrical power from certain non-gaseous carbonaceous feedstocks through the integration of catalytic hydromethanation technology with fuel cell technology.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to a methane-enriched synthesis gas, where an oxygen-rich gas stream and the carbonaceous feedstock are fed into a fluidized-bed hydromethanation reactor at a specified zone in order to assist in heat management within the hydromethanation reactor.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to a methane-enriched synthesis gas, where an oxygen-rich gas stream and the carbonaceous feedstock are fed into a fluidized-bed hydromethanation reactor, and where the carbonaceous feedstock as fed into the hydromethanation reactor has an elevated moisture content in order, for example, to assist in heat management within the hydromethanation reactor.

The invention provides a catalyst used for methanation of carbon dioxide, a preparation method therefor and applications thereof. The catalyst employs precious metal Ru or Rh as a main catalytic activity component, employs one or more selected from elements of the I and II main groups and the II, III and VII subgroups as auxiliary agents, and employs one or more selected from SiO2, TiO2, Al2O3, CeO2 and ZrO2 as carriers. The above catalyst is used in graininess or the carriers, the auxiliary agents and the activity component are subjected to coating (wall loading) on a whole structural catalyst and metal honeycombs. The catalyst has characteristics of high activity and selectivity and wide temperature and pressure operation windows. The catalyst can be used for hydrogenation methanation removal of CO2 in a space station, then generated H2O is subjected to electrolysis, and circulation supply of oxygen is achieved. The catalyst also can be used for processes of other CO2 conversion utilization of coal-made natural gases and process gases and the like and new energy development and energy saving and emission reduction are achieved.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to a hot methane-enriched synthesis gas, in which heat energy from the hot methane-enriched synthesis gas is used to generate a dry saturated steam stream, and the dry saturated steam stream is converted into a superheated steam stream via pressure drop for feeding into the hydromethanation reactor to satisfy the steam demand of the hydromethanation reaction.

The present invention relates generally to processes for hydromethanating a carbonaceous feedstock in a hydromethanation reactor to a methane product stream and a char by-product, and more specifically to removal of the char by-product from the hydromethanation reactor.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to an acid gas-depleted methane-enriched synthesis gas, with improved efficiency of the acid gas removal treatment.

The present invention relates to processes for preparing gaseous products, and in particular methane, via the catalytic hydromethanation of a carbonaceous feedstock in the presence of steam, syngas and an oxygen-rich gas stream.

The invention provides a high selectivity carbon dioxide methanation catalyst and a preparation method and application thereof, the catalyst comprises active components, auxiliary agents and a carrier; noble metal Ru or Rh is used as a main catalytic active component, one or a plurality of elements selected from I and II main group and II, III and VII sub group are used as the auxiliary agents, and Ce-Zr oxide in a certain proportion is used as the carrier. The high selectivity carbon dioxide methanation catalyst is used in the manner of particles or coating (wall loading) of the carrier, the auxiliary agents and the active components on to an overall structure catalyst or a metal honeycomb. The catalyst has high activity and high selectivity of methanation, no CO content and the like, the catalyst can be applied to hydrogenation methanation removal of CO2 in a space station, can be applied to the process of natural gas production from coal, process gas CO2 conversion and utilization process and the like, and can realize the new energy development and energy saving and emission reduction.

The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to an integrated coal hydromethanation process including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.

The present invention relates to processes and apparatuses for generating electrical power from certain non-gaseous carbonaceous feedstocks through the integration of catalytic hydromethanation technology with fuel cell technology.

The invention discloses a solar energy, wind energy and fuel gas complementation combined hydrogen production and methane production circulating thermal power generation device. A groove type solar thermal power generation technology is organically grafted in a semi-closed supercritical carbon dioxide fuel gas Brayton thermal power generation system, and the congenital defect that solar thermal power generation is unstable and discontinuous is overcome through complementation heat storage circulating power generation; meanwhile, water generated by pure oxygen gas power generation is used for electrolytic hydrogen production and oxygen production, carbon dioxide obtained through steam-water separation serves as a power working medium, other parts are subjected to hydrogenation methanation preparation, and prepared methane gas is stored; oxygen obtained by hydrogen production through renewable energy electrolysis water is used for pure oxygen fuel gas Brayton efficient power generation of the system; and water generated by condensation of the system and water generated by hydrogenation methanation are directly supplied to a groove type solar thermal power generation system for recycling after being stored and serve as a water source for cleaning a solar mirror field. The invention belongs to the technical field of solar thermal power generation and high-temperature thermochemistry interdisciplinary.

The invention provides a titanium-base methanated catalyst, a preparation method of the titanium-base methanated catalyst and an application of the titanium-base methanated catalyst. Due to a high mutual function of nickel oxide-titanium dioxide and the large specific surface / the large pore volume and the high heat resistance of a titanium-zirconium composite carrier, after magnesium oxide and a microporous thermal insulation material are added, the good heat resistance of the catalyst can be improved, so that the catalyst which integrates various advantages and can be used for the methanation of the high-concentration carbon monoxide and carbon dioxide (wherein CO+CO2 is larger than or equal to 10%) in a hydrogenating way can be obtained. The catalyst has the physico-chemical property that the bulk specific weight is 0.6-1.1kg / L, the specific surface is 120-200m<2> / g, the pore volume is 0.2-0.5mL / g, and the condtion that the pore size distribution is 80-120 (angstrom) accounts for 80%; and the catalyst has the catalytic activity that the activating temperature is 250 DEG C, the heat being at 750 DEG C can be resisted, the activity of CO+H2 is more than 98%, and the CH4 selectivity is more than 97%.

The invention discloses a ruthenium-based carbon dioxide hydromethanation catalyst and a preparation method thereof, and belongs to the technical field of catalysis. The preparation method comprises the following steps: selecting different types of ionic liquids and fully mixing the ionic liquids with a reducing agent solution; dropwise adding a salt solution containing Ru<3+> into the mixed solution; performing heating, stirring and refluxing for a period of time under the protection of inert gas to obtain ionic liquid-stabilized nano Ru particles with different particle sizes, cooling the nano Ru particles to a certain temperature after reaction, and washing the nano Ru particles with a proper solvent; and ultrasonically stirring and depositing the Ru nano particles on different carriers, and finally performing vacuum drying treatment to obtain the ruthenium-based CO2 hydromethanation catalyst. The ruthenium-based catalyst has good metal dispersity, the methanation reaction temperature is reduced, the catalyst has good reaction activity and stability under the low-temperature condition, and the ruthenium-based catalyst can be used for improving the low-temperature CO2 methanationcatalytic performance.

The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of a carbonaceous feedstock in the presence of steam, syngas, a hydromethanation catalyst and an oxygen-rich gas stream.

The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to an integrated coal hydromethanation process including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.

The present invention relates to processes for hydromethanating a nickel-containing (and optionally vanadium-containing) carbonaceous feedstock while recovering at least a portion of the nickel content (and optionally vanadium content) originally present in the carbonaceous feedstock.

The present invention relates to processes for hydromethanating a carbonaceous feedstock to an acid gas-depleted methane-enriched synthesis gas, with improved efficiency of the acid gas removal treatment.