Method of biomass gasification

Abstract

A method for the gasification of biomass, wherein the biomass feedstock is combined with a light hydrocarbon composition to form a slurry; followed by feeding the slurry to a gasifier to produce a fuel gas. In another embodiment, a method for the gasification of biomass is described. The method includes the steps of combining a biomass feedstock with water to form a slurry; feeding the slurry to a gasifier to produce a fuel gas; and injecting a light hydrocarbon into the gasifier, to generate gasification temperatures greater than about 900° C., by partial or complete combustion of the light hydrocarbon. In some other embodiments, the biomass gasifier product gas is coupled to a reformer, wherein a light hydrocarbon is injected to generate high temperatures.

Description

BACKGROUND

[0001] This invention generally relates to bio-fuels, and in particular to a method of carrying out biomass gasification.

[0002] Biomass is receiving increased attention as a renewable energy source, in this era of emphasis on energy security and increasing environmental concerns.

[0003] Multiple ways of utilization of biomass are being tried. Traditionally, the most common method of using the biomass has been to burn it, to provide heat energy. This heat energy is then used directly, or used to produce steam.

[0004] It has been demonstrated that gasification of biomass is a better option than burning it. Gasification produces a clean burning gas that can be easily utilized. The product gas can be used as a feedstock for production of value added fuels and chemicals. The burning of this gas in internal combustion engines or turbines offers higher efficiencies, as compared to steam devices.

[0005] Historically, gasification technology was used to convert coal into a combustible gas....

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