Method for the wet-chemical transformation of biomass by hydrothermal carbonization

A biomass conversion technology, applied in the fields of biofuels, waste fuels, solid fuels, etc., can solve the problems of uneconomical hydrothermal carbonization process, not providing high yield, and products not having constant quality, etc.

Inactive Publication Date: 2010-03-31
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in a product that is not of constant quality and does not provide high yields, which makes the hydrothermal carbonization process uneconomical

Method used

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  • Method for the wet-chemical transformation of biomass by hydrothermal carbonization
  • Method for the wet-chemical transformation of biomass by hydrothermal carbonization

Examples

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Embodiment Construction

[0054] figure 1 An embodiment of a reactor for carrying out the process according to the invention is shown schematically, which in this example is embedded in a tube well 1 below ground. The tube well 1 is located at a depth of 200m. The reactor 2 has an inlet 3 to the reaction volume, which in this case occupies the entire volume of the horizontally arranged reactor. Suspended biomass is pumped into the reaction volume via this inlet 3 . The reaction product is again pumped upwards via outlet 4 . The walls of the reactor 2 can be relatively thin, since in this case the hydrostatic pressure is absorbed by the surrounding soil 5 . Here, the reactor 2 is surrounded by soil 5 which corresponds to at least four times the diameter D of the reaction volume. There is no larger hollow space in the peripheral region, so that the total mass in the volume occupied by the material in the peripheral region corresponds to at least 8 times the mass of the reaction mixture in the reactio...

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Abstract

The present invention relates to a method for the conversion of biomass into solid matter having higher energy density, particularly into coal, humus or peat. Using said method, organic matter is reduced in water from the biomass by forming a suspension and part of the suspension to be converted is heated to a reaction temperature and is converted under elevated pressure by hydrothermal carbonization into the solid matter having higher energy density. The method is characterized in that the conversion takes place in a reaction volume that is below the surface of the earth. The method ensures consistency of product quality and greater economic efficiency of the process.

Description

technical field [0001] The present invention relates to a method for the conversion of biomass into higher energy density solids, in particular into charcoal, humus or peat, wherein the organic matter from the biomass is suspended in water to form a suspension and at least a part of it to be converted The suspension is heated to the reaction temperature and converted to a higher energy density solid by hydrothermal carbonization at elevated pressure. Organic matter can be, for example, parts of plants, other biomass or organic waste. Background technique [0002] The conversion of biomass into products with a higher mass-specific energy content than the biomass used, such as oil, gas or charcoal, is becoming more and more important. [0003] Methods are known for obtaining gas and / or oil and carbon at high temperatures, for example by pyrolysis, gasification or sulphurization. Catalysts are often used here which promote the reaction and have a positive influence on the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C10L9/00C10L9/02C10L9/08
CPCC10L5/44C10L9/086C10L9/00Y02E50/30C10L9/08C10L9/02Y02E50/10
Inventor P·艾斯纳A·马尔贝格A·施特布勒M·门纳M·安东涅蒂
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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