Abstract:
Provided is a biomass syngas purification process under positive pressure for producing oil and the system thereof. In the process, an oxidation air blower is employed to blast a high-temperature pyrolysis gasifier; a high-temperature syngas extracted from the gasifier enters a water-cooled chilling tower via a water-cooled flue, and the gas is partly chilled to solidify slag by spraying water; the waste heat is recovered by a waste heat boiler of a water-tube type and a waste heat boiler of a heat-tube type in two stages with double pressure; the by-products, middle pressure steam and low pressure steam, are ejected externally; after the heavy tar is condensed and recovered by the waste heat boiler of the heat-tube type, the resulting syngas enters a Venturi scrubber without padding, scrubbing dust extraction, a wet electrostatic precipitator for deep dust extraction, and is purified by removing tar fog; then the acceptable syngas is transported to a wet gas-holder for storage or supplied for use down-stream. The purification aims of cooling of the syngas in stages, gradient recycling of waste heat, stepwise dust extraction and tar removal are achieved and the technical problems of a complex system, long flow, high energy consumption, low efficiency, and poor stability and economy are resolved by optimizing the process and controlling the appropriate process parameters.
Abstract:
The invention relates to a method of and a system (1) for processing a slurry containing organic components, such as biomass, having a water contents of at least 50%, comprising a pump (6) and heater or heat exchanger (7) to bring the liquid in the slurry in a supercritical state, a reactor (8) to convert at least a part of the organic components in the slurry, and a separator (12) to remove gaseous products from the converted slurry, and comprising a mixer (5) for adding fluid from the converted slurry to the slurry upstream from the reactor (8).
Abstract:
Ein Produktionsverfahren von Synthesegas zum Betreiben eines Verbrennungsmotors (19) aus organischem Festbrennstoff, welcher in einem Pyrolyse-Reaktor (4) ohne Sauerstoffzufuhr in Pyrolyse-Produkte aufgespalten wird, wobei anschließend sämtliche Pyrolyse-Produkte aus dem Pyrolyse-Reaktor von unten her einem weiteren Reaktor zugeführt werden, wobei ein im weiteren Reaktor erzeugtes Synthesegas dem weiteren Reaktor als Produktgas entnommen und direkt oder indirekt dem Verbrennungsmotor zugeführt wird, und wobei der Pyrolyse-Reaktor mit mindestens einer Pyrolyse-Schnecke (5) zur Förderung des Festbrennstoffs betrieben wird, ist dadurch gekennzeichnet, dass der weitere Reaktor als Wirbelschicht-Reaktor (7) ausgebildet ist, welcher mittels Luftzufuhr mit einer Geschwindigkeit oberhalb der minimalen Lockerungsgeschwindigkeit des Bettmaterials der Wirbelschicht (9) des Wirbelschicht-Reaktors fluidisiert wird, dass dem Pyrolyse-Reaktor als organischer Festbrennstoff ein biogener Abfallstoff mit einem Aschegehalt von mindestens 20% der Feststoffmasse des Festbrennstoffs zugeführt wird, und dass der organische Festbrennstoff im Pyrolyse-Reaktor in Pyrolyse-Öl, Pyrolyse-Koks und Pyrolyse-Gas aufgespalten wird. Damit können organische Festbrennstoffe wie biogene Abfallstoffe, Klärschlamm, Papierschlamm, Trester, Spelzen, Mist, Schalen oder dergleichen in einem stabilen Prozess besonders kostengünstig zu einem Synthesegas vergast werden, welches zur motorischen Nutzung mittels einer Gasturbine geeignet ist.
Abstract:
A carbonaceous substance dry powder gasification device and method, the device comprising from bottom to top a lower cooling and purification section (1), a gasification reaction section (2), a cooling reaction section (3) and an upper cooling and purification section (4); an initial cooling device is disposed at the connection between the cooling reaction section and the gasification reaction section; and a plurality of nozzles are circumferentially arranged in the gasification reaction section. The method comprises: a gasification reaction is conducted between a carbonaceous substance and an oxygenated gasifying agent to generate crude synthesis gas and ash; part of the crude synthesis gas and most of the ash go downstream for cooling and gasification, and the cooled and ash removed crude synthesis gas is transferred to subsequent processes, and the quenched ash is discharged through an ash outlet; the remaining crude synthesis gas and fly ash go upstream to mix with a cooling substance for cooling, and then are transferred to the cooling reaction section for reacting with the incompletely reacted carbon and added gasification agent; the crude synthesis gas and the fly ash are cooled and purified to remove the fly ash, and the clean low-temperature crude synthesis gas is transferred to subsequent processes. The method avoids ash blocking at an ash outlet in an upstream air-exhaust method, and also avoids overheating at the top in a downstream air-exhaust method, thus improving the carbon conversion rate.
Abstract:
Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels.
Abstract:
Systems and methods for fabricating syngas mixtures or fuels are disclosed. A system may include parallel processing chambers, each processing chamber configured to produce one component of a syngas mixture. Each chamber may include at least one plasma torch having a source of a working gas. In one embodiment, a first processing chamber may be optimized to produce hydrogen gas, and a second processing chamber may be optimized to produce carbon monoxide gas. The system may include a mixing component configured to mix the hydrogen gas and the carbon monoxide gas. The system may also include a reaction system to receive the hydrogen gas and the carbon monoxide gas and produce a fuel therefrom. The parallel processing chamber system may be used in methods for producing a syngas mixture or a fuel.
Abstract:
Systems and methods are disclosed for pyrolysis of waste feed material. Some systems include a main retort and a secondary retort. Syngas is produced by pyrolysis in the main retort, and is then mixed with combustion air and ignited, in some cases to produce energy. Carbon char travels to the secondary retort and is exhausted from the system through an airlock.