Abstract:
Process for producing methane or methanol, said process comprising the steps of:i) conducting a solid renewable feedstock to a thermal decomposition step, this being a pyrolysis step or a hydrothermal liquefaction step, for producing: a first off-gas stream comprising hydrocarbons, a solid carbon stream, and optionally a first liquid oil stream;upgrading the first off-gas stream by conducting it to a hydro/deoxygenation (HDO/DO) step i.e. hydrodeoxygenation or deoxygenation step in which said HDO/DO step is conducted in the absence of steam,, and a subsequent separation step, for generating water, a second liquid oil stream and an upgraded first off-gas stream; ii) conducting the first off-gas stream or the upgraded first off-gas stream to an olefin removal step, for generating a further upgraded first off-gas stream which is free of olefins; iii-1) conducting the first off-gas stream, or the upgraded first off-gas stream, or the further upgraded first off-gas stream, to a methanation step under the generation of steam for producing said methane; or iii-2) conducting the first off-gas stream, or the upgraded first off-gas stream, or the further upgraded first off-gas stream, to a steam reforming step for producing a methanol synthesis gas and subsequently conducting the methanol synthesis gas to a methanol synthesis step under the generation of steam for producing said methanol; iv) conducting steam, such as at least a portion of the steam generated in step iii-1) or iii-2), to an electrolysis step for producing an oxygen stream and a hydrogen stream; v) conducting at least a portion of the hydrogen stream from the electrolysis step to any of the: thermal decomposition step including HDO-step, olefin hydrogenation step, methanation step, methanol synthesis step, or combinations thereof.
Abstract:
The invention provides a system for pyrolysis, comprising: (i) a gas producer comprising a gasification zone and a producer gas outlet, wherein the gas producer is configured to: oxidise at least one carbon-containing feed in the presence of an oxidising gas in the gasification zone to form a producer gas; and discharge the producer gas from the gasification zone via the producer gas outlet, wherein a residual oxygen content of the producer gas is substantially depleted or maintained below a maximum predetermined amount by controlling a ratio of oxygen fed to the gasification zone to the carbon-containing feed, (ii) a pyrolyzer comprising a pyrolysis zone and one or more pyrolyzer gas outlets, wherein the pyrolyzer is configured to: feed the producer gas discharged from the gasification zone to the pyrolysis zone; pyrolyze a pyrolyzable organic feed in the pyrolysis zone in the presence of the producer gas to produce a carbonaceous pyrolysis product and a gas mixture comprising combustible components comprising pyrolysis gas; and discharge the gas mixture from the pyrolysis zone via the one or more pyrolyzer gas outlets, and (iii) a first combustor comprising a combustion zone, wherein the first combustor is configured to: receive the gas mixture discharged from the pyrolysis zone in the combustion zone; feed an oxygen-containing gas to the combustion zone; and combust at least a portion of the combustible components present in the gas mixture in the combustion zone to produce a combustion product gas.
Abstract:
Изобретение относится к области металлургии, в частности, технологии производства восстановителей для получения технического 5 кремния высокой чистоты. Способ переработки углеродсодержащего сырья с получением восстановителя для производства технического кремния, включающий термообработку углеродсодержащего сырья в кипящем слое при температуре 700-850 оС посредством скоростного дутья смесью воздуха и водяного пара с обеспечением перехода железосодержащих 10 соединений в углеродсодержащем сырье в магнитную форму, охлаждение полученного восстановителя и его последующую магнитную сепарацию в течение 100-120 часов непосредственно после стадии охлаждения, при величине индукции магнитного поля не менее 1,1 Тл. Технический результат заключается в снижении содержания железа в восстановителе 15 для производства технического кремния высокого качества.
Abstract:
This invention relates to a process for the conversion of a feedstock comprising a lignin-comprising material, comprising the steps (a) to (c): (a) charging the feedstock to a fluidized bed reactor; (b) pyrolyzing at least part of the feedstock in the fluidized bed reactor while introducing a carrier gas into the reactor, to produce pyrolysis vapours; (c) reacting at least part of the pyrolysis vapours coming from step (b) in a second reactor comprising a catalyst, to produce hydrocarbon products comprising aromatics; in which process in step (a) sand is used as a heat carrier in the fluidized bed; and in step (b) a C 1 -C 4 hydrocarbon, preferably a C 1 -C 4 alkane, is introduced into the reactor as a carrier gas; and the temperature in the fluidized bed reactor in step (b) is equal to or more than 400°C to equal to or less than 600°C and the temperature in the reactor in step (b) is kept higher than in the reactor in step (c); and the reactor in step (c) comprises a MFI or MWW type zeolite catalyst and the temperature in the reactor is equal to or more than 350°C to equal to or less than 550°C.
Abstract:
A method to pyrolyze biomass materials such as rice hulls, municipal waste, etc., to produce useful oil, gas, and char. Disposal of biomass waste materials by burning in boilers results in coating of parts by molten ash, and air pollution. The invention provides for disposal of biomass materials by conversion to oil, gas, and char by pyrolysis and/or gasification at 400-1100 C in a fluidized bed reactor containing a bed of inert material such as refractory sand using air or mixtures of O2, N2, CO2, and water as the fluidizing gas. Another object is to provide pyrolysis apparatus including a shredder (3), a dryer (4), a gasifying chamber (20), and cyclone separator (38). Separated gases are burned in boiler (62) providing steam to dryer (4) and for electricity generation, or condensed to produce oil. Separated ash is recycled to gasifier (20) and removed to storage (54). Fluidizing gas is provided through port (26) and distributing plate (22).
Abstract:
Eine Vorrichtung (1) zum Verwerten von Prozessgas unter Umsetzung von Altstoffen und Bildung von Synthesegas, umfasst zumindest ein entlang einer axialen Richtung (4) ausgebildetes und vertikal angeordnetes Steigrohr (3), eine in das Steigrohr (3) mündende Zuleitung (5) für das Prozessgas und ein an das Steigrohr (3) anschließendes Abgasaufbereitungssystem (6) sowie eine Aufgabevorrichtung (7) für die Altstoffe mit zumindest einem über eine definierte Länge (L) in das Steigrohr (3) ragenden Förderrohr (16), wobei das zumindest eine Förderrohr (16) ein sich in das Steigrohr (3) eröffnendes offenes Ende (17) aufweist und die Zuleitung (5) in axialer Richtung (4) unterhalb des offene Endes (17) in das Steigrohr (3) mündet, sodass das zumindest eine Förderrohr (16) von von der Zuleitung (5) in das Steigrohr (3) eintretendem Prozessgas umströmbar ist.
Abstract:
The present invention relates to a reactor for processing biomass by torrefaction, wherein the reactor is a two-stage reactor comprising a first inner section (2) and a second outer section (3) for two-stage torrefaction, the second outer section (3) surrounding the first inner section (2). The first inner section (2) for a first torrefaction stage (A) comprises a first cylinder, wherein an inlet (1) for the supply of biomass and a hot gaseous medium is arranged in a lower part of the first cylinder, the first cylinder being completely open at an upper end. The second outer section (3) for a second torrefaction stage (B) may also comprise a second cylinder of such a diameter that enables the second cylinder to be slid onto the first inner section (2). An upper end of the second cylinder is preferably terminated by a reactor dome (4), wherein the first inner section (2) passes through an inclined bottom section (5) of the second outer section (3), which bottom section (5) opens into a reactor outlet (7).
Abstract:
The invention relates to a method and apparatus for burning raw material (3) including biomass-based and/or waste-based raw material in a combustion reactor (1) in such a way that the raw material is fed to the firebox of the combustion reactor, wherein the raw material is burnt. According to the invention, a calcium compound (4) is provided to the firebox partially or entirely in the form of calcium carbonate, the temperature and partial pressure of carbon dioxide in the gas atmosphere of the firebox are adjusted (5) during the combustion in such a way that calcination of the calcium carbonate is hindered and the maintenance of the calcium compound in the carbonate form in connection with the combustion is furthered, in which case the calcium carbonate forms a reactive bonding surface with alkali metal based substances, and the unwanted alkali metal based substances are conveyed (7) out from the firebox by means of the calcium carbonate.
Abstract:
Equipos y un proceso para producir bio-combustible mediante pirólisis rápida de material orgánico, compuesto por un sistema de tres reactores de lecho fluidizado en serie e interconectados entre sí, estos corresponden a un reactor de pirólisis rápida ubicado en el interior de otro reactor donde se efectúa la combustión de carboncillo; un reactor de combustión del carboncillo generado en el reactor de pirólisis rápida; y un reactor de precalentamiento del material particulado inerte. También se incluye un sistema neumático de recirculación de material particulado.