Method for hydrothermally carbonizing renewable raw materials and organic residual products
A technology of hydrothermal carbonization and raw materials, which is applied in the direction of biofuel, carbon preparation/purification, fuel, etc., and can solve the problems that the reaction temperature cannot be controlled without any problem, difficult maintenance work, etc.
Active Publication Date: 2014-08-06
SUNCOAL INDS GMBH
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Problems solved by technology
Disadvantages of the technology conversion approach employed here relate to equipment located below the surface, since the reaction temperature cannot be controlled without problems and it may be difficult to carry out required maintenance work
[0026] The reason why Bergius's invention has not been widely used, apart from the fact that there has been no need for implementation so far, is no doubt due to the disappointing transition from the scientific invention of hydrothermal carbonization to an industrially usable process technology and in the development of devices related thereto. Satisfied with the status quo
Method used
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Embodiment
[0105] with the help of figure 1 The following examples describe the invention:
[0106] The raw material should be wood chips with a dry matter content of 50% by mass and a side length of at most 30x20x20 mm.
[0107] At ambient temperature, 2000 kg / h wood chips (corresponding to 5155 kW energy efficiency) are withdrawn from bulk silo 1 via conveying device 2 and introduced into the first process stage (consisting of feed funnel 3, slurry pump 4 and water separator 5).
[0108] The pumpability of the feedstock is produced by filling the void volume of the feedstock in the feed funnel 3 with 2000 kg / h of in-process waste water 29 discharged from the isothermal steam purge 19 . The solids content of the raw material is thus reduced to 25% by mass before the pump 4 . For example the feedstock is preheated to a temperature above 50°C.
[0109] The slurry pump 4 raises the pressure of the raw water mixture to 25 bar and sends it to the first process step 7 of the second process...
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The present invention relates to a continuous process for the hydrothermal carbonization of renewable raw materials and organic residues, wherein in a first process stage the pressure is raised substantially to the pressure level at which carbonization occurs and in a second process stage at a temperature of at least 5 bar Carbonization under pressure and at most the boiling temperature of water, the resulting carbonized product is at least partially deposited as a sediment, the filling level of the water in the second process stage is set by drainage, the discharge from the second process stage is reduced by evaporating water The temperature of the precipitate, the precipitate is introduced into the third process stage, the third process stage is a drying process heated with steam, wherein the drying process is carried out under a steam atmosphere, and the precipitate is subsequently discharged from the process .
Description
technical field [0001] The invention relates to a process for the hydrothermal carbonization of renewable raw materials and organic residues. Background technique [0002] The renewable raw materials and organic residues which can be used in the process of the invention are hereinafter denoted by the term raw material or biomass. Raw material or biomass is to be understood as existing plant and animal biomass and metabolites, in particular regenerative raw materials such as: sawdust, green waste from landscape maintenance, plants, straw, silage and from agriculture, forestry, food Organic residues from the industrial and waste removal industries, as well as peat, raw lignite, pulp and sludge, pomace, etc., which are also referred to below as raw materials. [0003] Raw materials are basically converted into humus, coal, fertilizer, water and CO by hydrothermal carbonization 2 . [0004] For the process according to the invention, the term "feedstock" relates essentially t...
Claims
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IPC IPC(8): C10L5/44C10L9/08C10B53/02
CPCC10L9/08Y02E50/30C10L5/44Y02E50/14C10L9/086C10L5/366Y02E50/10C01B31/02Y02P20/145C01B32/05
Inventor B·M·沃尔夫T·威特曼C·冯奥尔斯豪森
Owner SUNCOAL INDS GMBH