摘要:
An interconnected set of two or more stages of reactors to form a bio-reforming reactor that generates syngas for a number of different liquid fuel or chemical processes is discussed. A first stage includes a circulating fluidized bed reactor that is configured to cause a chemical devolatilization of the biomass into its reaction products of constituent gases, tars, chars, and other components, which exit through a reactor output from the first stage. A second stage of the bio-reforming reactor has an input configured to receive a stream of some of the reaction products that includes the constituent gases and at least some of the tars as raw syngas, and then chemically reacts the raw syngas within a vessel of the second stage to make the raw syngas from the first stage into a chemical grade syngas by further cracking the tars, excess methane, or both.
摘要:
A multiple stage synthesis gas generation system is disclosed including a high radiant heat flux reactor, a gasifier reactor control system, and a Steam Methane Reformer (SMR) reactor. The SMR reactor is in parallel and cooperates with the high radiant heat flux reactor to produce a high quality syngas mixture for MeOH synthesis. The resultant products from the two reactors may be used for the MeOH synthesis. The SMR provides hydrogen rich syngas to be mixed with the potentially carbon monoxide rich syngas from the high radiant heat flux reactor. The combination of syngas component streams from the two reactors can provide the required hydrogen to carbon monoxide ratio for methanol synthesis. The SMR reactor control system and a gasifier reactor control system interact to produce a high quality syngas mixture for the MeOH synthesis.
摘要:
An integrated plant that includes a steam explosion process unit and biomass gasifier to generate syngas from biomass is discussed. A steam explosion process unit applies a combination of heat, pressure, and moisture to the biomass to make the biomass into a moist fine particle form. The steam explosion process unit applies steam with a high pressure to heat and pressurize any gases and fluids present inside the biomass to internally blow apart the bulk structure of the biomass via a rapid depressurization of the biomass with the increased moisture content. Those produced moist fine particles of biomass are subsequently fed to a feed section of the biomass gasifier, which reacts the biomass particles in a rapid biomass gasification reaction to produce syngas components.
摘要:
A method, apparatus, and system for a solar-driven chemical plant that may include a solar thermal receiver having a cavity with an inner wall, where the solar thermal receiver is aligned to absorb concentrated solar energy from one or more of 1) an array of heliostats, 2) solar concentrating dishes, and 3) any combination of the two. Some embodiments may include a solar-driven chemical reactor having multiple reactor tubes located inside the cavity of solar thermal receiver, wherein a chemical reaction driven by radiant heat occurs in the multiple reactor tubes, and wherein particles of biomass are gasified in the presence of a steam (H2O) carrier gas and methane (CH4) in a simultaneous steam reformation and steam biomass gasification reaction to produce reaction products that include hydrogen and carbon monoxide gas using the solar thermal energy from the absorbed concentrated solar energy in the multiple reactor tubes.
摘要:
A method, apparatus, and system for a solar-driven chemical plant are disclosed. An embodiment may include a solar thermal receiver aligned to absorb concentrated solar energy from one or more solar energy concentrating fields. A solar driven chemical reactor may include multiple reactor tubes located inside the solar thermal receiver. The multiple reactor tubes can be used to gasify particles of biomass in the presence of a carrier gas. The gasification reaction may produce reaction products that include hydrogen and carbon monoxide gas having an exit temperature from the tubes exceeding 1000 degrees C. An embodiment can include a quench zone immediately downstream of an exit of the chemical reactor. The quench zone may immediately quench via rapid cooling of at least the hydrogen and carbon monoxide reaction products within 0.1-10 seconds of exiting the chemical reactor to a temperature of 800 degrees C. or less.
摘要:
Heat-transfer-aid particles entrained with 1) biomass particles, 2) reactant gas, or 3) both are fed into the radiant heat chemical reactor. The inner wall of a cavity and the tubes of the chemical reactor act as radiation distributors by either absorbing radiation and re-radiating it to the heat-transfer-aid particles or reflecting the incident radiation to the heat-transfer-aid particles. The radiation is absorbed by the heat-transfer-aid particles, and the heat is then transferred by conduction to the reacting gas at temperatures between 900° C. and 1600° C. The heat-transfer-aid particles mix with the reactant gas in the radiant heat chemical reactor to sustain the reaction temperature and heat transfer rate to stay within a pyrolysis regime. The heat-transfer-aid particles produce a sufficient heat surface-area to mass ratio of these particles when dispersed with the reactant gas to stay within the pyrolysis regime during the chemical reaction.
摘要:
A method, apparatus, and system are described in which products from a solar assisted Reverse Water Gas Shift (RWGS) reaction are used in a hydrocarbon fuel synthesis process to create a liquid hydrocarbon fuel. A water splitter splits water molecules into hydrogen and oxygen via the addition of the solar energy. A chemical reactor chamber mixes solar heated carbon dioxide gas with all or just a portion of the hydrogen molecules from the water splitter in a RWGS reaction to produce resultant carbon monoxide. A hydrocarbon liquid fuel synthesis reactor receives and uses either 1) all of the unconsumed portions of hydrogen from the RWGS or 2) the remaining portion of the hydrogen molecules from the water splitter and the resultant carbon monoxide molecules from the RWGS in the hydrocarbon fuel synthesis process to create a liquid hydrocarbon fuel.
摘要:
Multiple stages of reactors form a bio-reforming reactor that generates chemical grade bio-syngas for any of 1) a methanol synthesis reactor, 2) a Methanol-to-Gasoline reactor train, 3) a high temperature Fischer-Tropsch reactor train, and 4) any combination of these three that use the chemical grade bio-syngas derived from biomass fed into the bio-reforming reactor. A tubular chemical reactor of a second stage has inputs configured to receive chemical feedstock from at least two sources, i) the raw syngas from the reactor output of the first stage via a cyclone, and ii) purge gas containing renewable carbon-based gases that are recycled back via a recycle loop as a chemical feedstock from any of 1) the downstream methanol-synthesis-reactor train, 2) the downstream methanol-to-gasoline reactor train, or 3) purge gas from both trains. The plant produces fuel products with solely 100% biogenic carbon content as well as fuel products with 50-100% biogenic carbon content.
摘要:
Disclosed herein is an integrated plant including, in some embodiments, an interconnected set of two or more stages of reactors forming a bio-reforming reactor configured to generate syngas from wood-containing biomass. A first stage of the bio-reforming reactor is configured to cause a set of chemical reactions in the biomass to produce reaction products of constituent gases, tars, chars, and other components. The first stage includes a fluidized-bed gasifier, a fluidized-bed combustor, and a moving-bed filtration system, each of which includes media inputs and outputs to respectively receive and supply heat-absorbing media to another operation unit for recirculation in a media recirculation loop. The moving-bed filtration system includes a tar pre-reformer configured to capture and reform heavier tars into lighter tars for subsequent processing in one or more fuel-producing reactor trains. Fuel products produced by the one or more reactor trains have a biogenic content of between 50% and 100%.
摘要:
Multiple stages of reactors form a bio-reforming reactor that generates chemical grade bio-syngas for any of 1) a methanol synthesis reactor, 2) a Methanol-to-Gasoline reactor train, 3) a high temperature Fischer-Tropsch reactor train, and 4) any combination of these three that use the chemical grade bio-syngas derived from biomass fed into the bio-reforming reactor. A tubular chemical reactor of a second stage has inputs configured to receive chemical feedstock from at least two sources, i) the raw syngas from the reactor output of the first stage via a cyclone, and ii) purge gas containing renewable carbon-based gases that are recycled back via a recycle loop as a chemical feedstock from any of 1) the downstream methanol-synthesis-reactor train, 2) the downstream methanol-to-gasoline reactor train, or 3) purge gas from both trains. The plant produces fuel products with solely 100% biogenic carbon content as well as fuel products with 50-100% biogenic carbon content.