A method for converting a feedstock comprising solid hydrocarbons to a sweet synthesis gas, involving the steps a. gasifying said feedstock in the presence of steam, an oxygen rich gas and an amount of sour process gas to form a raw synthesis gas optionally comprising tar, b. optionally conditioning said raw synthesis gas to a sour shift feed gas, c. contacting said sour shift feed gas with a sulfided material catalytically active in the water gas shift process for providing a sour hydrogen enriched synthesis gas, d. separating H.sub.2S and CO.sub.2 from said sour hydrogen enriched synthesis gas, for providing said sour recycle gas and a sweet hydrogen enriched synthesis gas.

The present invention relates to a method for treating synthesis gas, from an indirect or direct gasifier; the method including steps for: allowing the gas within a predetermined entry temperature range to flow into a first heat exchanger, allowing the gas to flow through the first heat exchanger while exchanging heat to a first medium, allowing the gas to transfer from the first heat exchanger to a subsequent last heat exchanger, allowing the gas to flow though the last heat exchanger while exchanging heat to a last medium, and allowing the gas to exit the last heat exchanger for being available to a further treatment, such as a cleaning treatment, within a predetermined exit temperature range, preferably below an ash or mineral solidification point. Furthermore, the present invention relates to a cooling system for cooling of synthesis gas and to a gasification system.

An apparatus and process are disclosed for producing hydrocarbons from biomass, the apparatus comprising: a pyrolysis reactor (2) in which dry biomass (Bd) is heated in an environment substantially free from oxygen and halogens, wherein a pyrolysis product (PP) and char (C) is produced; a gasification reactor (3) in which the separated char (C) is heated in an environment containing steam (Wst) so as to reduce said char (C) to produce a synthesis gas (Sh), a gas cooler (4) in which the produced synthesis gas (Sh) is cooled to a cooled synthesis gas (Srt); a conditioning and pressure system (5), in which the cooled synthesis gas (Srt) is refined so as to produce a purified synthesis gas (Sp); a separation device (6), in which hydrogen gas (H2) is separated from the purified synthesis gas (Sp). The apparatus also comprises a hydrogenation device (7), into which pyrolysis oil (PO) retrieved from the pyrolysis product (PP), and at least a portion of the separated hydrogen gas (H2) recuperated from the separation device (6) are introduced for a hydrogenation step, in which the pyrolysis oil (PO) is hydrogenated by the presence of the hydrogen gas (H2), wherein hydrocarbons (BO) that are substantially free from oxygen are produced.

Disclosed is a method for reducing the tar content in pyrolysis gas generated in a pyrolysis reactor (1). The method comprises the steps of: guiding the pyrolysis gas through a filter (2) to remove at least 90% of all the particles in the pyrolysis gas having a particle size down to 7 and preferably down to 4 from the pyrolysis gas, partially oxidizing the pyrolysis gas in a partial oxidation reactor (3) to remove tar from the pyrolysis gas, and guiding the pyrolysis gas through a coke bed (4) to further remove tar from the pyrolysis gas. Furthermore, a two-stage gasifier (6) is disclosed.

Implementations of a non-polluting biomass processor, and manufactured processor components are disclosed which at least partly address the local technical problems of a municipality, business, and/or organization, to generate non-polluting emissions, while generating at least one, often two or more, product outputs from biomass feedstocks input into the biomass processor. Examples of the operations of the biomass processor and various combinations of its manufactured processor components are disclosed. The product outputs may include carbon char and/or activated carbon, both of which may be used to increase water retention in climates with hot, dry summers and/or used to remediate water pollution in water reservoirs.

Methods and systems for processing construction and demolition (C&D) materials to produce a product gas stream and/or electricity are disclosed herein. In some embodiments, the method comprises pre-processing C&D materials to produce a C&D feed, and processing the C&D feed to produce syngas. The C&D feed can comprise untreated wood, treated wood, paper and cardboard, yard waste, plastic, rubber, and/or foam. Processing the C&D feed can comprise gasifying the C&D feed, steam, and oxygen in a gasifier at a temperature of no more than 950 C. and/or a pressure of no more than 200 psi to produce syngas.

A system and process for producing synthetic gas from solid fuel comprising waste material, municipal solid waste or biomass, and for upgrading the synthetic gas produced. The system and process utilizes a first thermal chamber having a gasification zone in which a fuel stream is gasified by thermal oxidation to produce a first synthetic gas stream and heat; a pyrolysis reactor housed within the first thermal chamber where fuel undergoes pyrolysis to produce a second synthetic gas stream; and a thermal catalytic reactor comprising a second thermal chamber having a catalyst chamber within with a selected catalyst. The first synthetic gas stream is completely thermally oxidized to produce high temperature flue gas that imparts heat to the catalyst chamber in which the second synthetic gas stream is thermally cracked and directed over the catalyst to yield a finished gas or liquid product having a desired chemical composition as determined by the selected catalyst.

A process for extracting a condensable vapor from a supplied gas, comprising the steps of: i) condensing the condensable vapor by cooling the supplied gas at a condensing surface, such that the supplied gas is divided into at least one condensed fraction and a product gas; while ii) removing the at least one condensed fraction from the condensing surface by mechanical scraping means.

In a method for cooling a hot synthesis gas containing at least one condensable constituent part, in particular tar, during which the synthesis gas in a multi-stage cooling process passes through a first cooling stage, a second cooling stage and a third cooling stage one after the other and the synthesis gas after an at least partial cooling is at least subjected to a separation step for separating the at least one condensable constituent part, the synthesis gas is cooled in the first cooling stage to a temperature above the condensation temperature of the at least one condensable constituent part and the second cooling stage comprises the recirculating of a part quantity of synthesis gas branched off after the third cooling stage and the at least one separation step into the synthesis gas flow.

The present invention provides a system and a method for rapid pyrolysis of coal. The system comprises: a rapid pyrolysis reactor, which comprises: a reactor body defining a reaction space that forms a dispersion region, a pyrolysis region, and a discharge region from top to bottom; said dispersion region comprises: a material distributor; a coal inlet arranged above the material distributor; a material distribution gas inlet connected to the material distributor; said pyrolysis region comprises: multilayer regenerative radiant tubes, which are distributed at an interval in the height direction of the reactor body in the pyrolysis region, and each layer of regenerative radiant tubes consists of a plurality of regenerative radiant tubes distributed at an interval in the horizontal direction; said discharge region comprises: a semi-coke outlet; a plurality of pyrolysis gas outlets, which are arranged in the dispersion region and/or the pyrolysis region respectively; a slag cooler connected to the semi-coke outlet, and a cooling device connected to the pyrolysis gas outlet.