A method and apparatus is described for reformulating raw gas and/or reducing and/or converting the tar in a raw gas from a gasification reaction. More specifically, a gas reformulating system having a gas reformulating chamber, one or more sources of or means for generating non-equilibrium plasma, and optionally one or more oxygen source(s) inputs and control system is provided. Methods of reformulation and/or reducing the tar concentration in a raw gas from a gasification reaction that uses non-equilibrium plasma are also provided.

A combined heat and power plant includes a gasifier, a heat exchanger arranged to reduce the temperature of the raw synthesis gas formed in the gasifier by exchanging the heat of the raw synthesis gas into heating medium used for heating and forming cooled raw synthesis gas, a filtration unit for cleaning the cooled raw synthesis gas to form refined synthesis gas suitable as a fuel for an internal combustion engine, an internal combustion engine where the refined synthesis gas is burnt to produce mechanical power, ducts for connecting different parts of the plant to each other a raw gas burner arranged after the gasifier to burn the raw synthesis gas formed in the gasifier during the time when the refined synthesis gas is not utilized in the internal combustion engine. A method for treating raw synthesis gas a combined heat and power plant is also disclosed.

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.

It is provided a process for increasing production of carbon monoxide (CO) and recycling carbon dioxide when treating synthesis gas using a carbon dioxide-to-carbon monoxide conversion unit, such as a Reverse Water Gas Shift (RWGS) reactor, converting excess CO.sub.2 from the produced syngas to additional CO, using an external source of green, renewable or low carbon intensity hydrogen.

The present invention relates to a method and a plant for treating carbon-containing waste that may comprise mineral fillers and/or potential contaminants.

This method comprises: preparing a molten glass bath at a temperature between 1100 C. and 1600 C.; loading the waste to be treated into said molten glass bath; injecting an oxidizer and optionally a fuel under pressure into said molten glass bath by means of at least one hose, one end of which is immersed in said bath, said oxidizer being introduced in a molar amount less than the molar amount of the carbon-containing compounds, thus causing combustion of said waste and generation of hot synthesis gases; implementing heat exchange between a heat-transfer fluid and the hot synthesis gases in conditions allowing simultaneous recovery of at least part of their heat energy and at least part of the heat energy released by their combustion, air being injected sequentially into said gases during said heat exchange to cause self-ignition of the mixture of said gases and air, each injection increasing the degree of combustion.

Nickel based catalyst structures are described herein that include a plurality of metal oxides formed as crystalline phases within the catalyst structures. Each metal oxide of a catalyst structure includes nickel and/or aluminum, where one or more metal oxides includes a nickel aluminum oxide, and the one or more nickel aluminum oxides is greater than 50% by weight of the catalyst structure. The catalyst structures further have surface areas of at least 13 m.sup.2/g. The catalyst structures are resistant to high concentrations of sulfur and are effective in reforming operations for converting methane and other light hydrocarbons to hydrogen and one or more other components. For example, the catalyst structures are effective in coal and biomass gasification systems for the forming and cleanup of synthetic gas.

A process and apparatus for the enhancement of syngas (CO and H.sub.2) to fuels production utilizing a carbon based feedstock, (for example coal) by exploiting some, or all, of the hot CO.sub.2 produced during the gasification step, and converting the CO.sub.2 through electrochemical reactions into oxygen (O.sub.2) and carbon via a molten salt reactor and directing the oxygen back to the gasifier to minimize or eliminate the need for an oxygen plant, while the carbon by-product (granular carbon) will be used for a variety of adsorbents for environmental applications.

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.

The present disclosure relates to a processes and systems for producing fuels from biomass with high carbon conversion efficiency. The processes and systems described herein provide a highly efficient process for producing hydrocarbons from biomass with very low Green House Gas (GHG) emissions using a specific combination of components, process flows, and recycle streams. The processes and systems described herein provide a carbon conversion efficiency greater than 95% with little to no GHG in the flue gas due to the novel arrangement of components and utilizes renewable energy to provide energy to some components. The system reuses water and carbon dioxide produced in the process flows and recycles naphtha and tail gas streams to other units in the system for additional conversion to syngas to produce hydrocarbon-based fuels.

Processes are disclosed that utilize beneficial reactions downstream of carbonaceous feed (e.g., biomass) oxidative conversion technologies, and advantageously under conditions (e.g., high temperatures) and/or with the syngas effluent quality (e.g., having particulates and/or other impurities) characteristic of raw syngas exiting such technologies (e.g., prior to, or upstream of, certain syngas purification operations). Such conversion technologies utilize an oxygen-containing feed or, more broadly, an oxidant-containing feed. The beneficial reactions may be carried out by the introduction of hydrogen for performing the reverse water-gas shift (RWGS) reaction and/or by the introduction of one or more hydrocarbons (e.g., methane, ethane, and/or propane) for performing the dry reforming reaction. These and other reactions can advantageously adjust the composition of the syngas obtained (e.g., as the raw syngas from an oxidative conversion technology) in a manner benefitting its subsequent use in providing value-added products such as liquid hydrocarbons.