DE202004007840U1 - Reactor to generate methane from farm plant residues, food residues, wood residues or slaughterhouse wastes by dry fermentation, comprises gas hood with side sub-surface curtains into two troughs - Google Patents

Abstract

A reactor generates methane gas from freshly harvested farm plants. The reactor has a gas hood (1) with side sub-surface curtains extending into two troughs (5, 7). The troughs are separated from each other by a barrier (3) with an inclined crest (4). Each trough is open on one side to the ambient air and on the other to the reactor chamber under the hood (1). The first trough contains a percolated fluid (6) and the second trough contains water effluent (8). The plant residues are loaded into containers which are passed in succession via the first trough in which they are submerged and advance to the barrier. At the barrier the container is raised and transfers sideways over the barrier and is lowered into the water effluent and rinsed. The container is then advanced, raised and removed.

Description

The invention relates to a device for dry fermentation of biomass. The invention is intended to make it possible, preferably just as fresh biomass from the field with little or no methane bacteria contains anaerobic to biogas (predominantly To ferment. But also biological ones containing any organic constituents scraps such as from the wastewater sector, waste from food processing, Wood processing, slaughter waste or silage with little or no methane bacteria Biogas are fermented.

From DE OS 19741943 "Process for fermentation rotting mass " known how preconditioned large pellets irregularly in boxes stored in a gas-tight chamber anaerobically for the production of Biogas with the addition of enzymes, methane gas fogging, steam fogging, moisture fogging various technical equipments ferments become.

Furthermore, a proofing channel Process known in which the solid in lattice boxes by the liquid Substrate filled Fermenter is pulled. (Source: www.graskraft.de/seminar4/feststoffhtml Lecture 4th Grass Power Seminar on November 29, 2001)

In the "process for fermenting fermentable Mass "according to DE OS 19741943 is disadvantageous, which is a preconditioning of the biomass by pressing in geometric pellets must be done to them then store in boxes. In addition to the effort involved there is no guarantee that the pellets will still have theirs after the fermentation process Have a shape to use in that shape. Therefore this pressing process for the use of biomass after fermentation is superfluous. Because with this driving also a lot of effort to influence the fermentation process by adding of enzymes, methane gas fogging, steam fogging, moisture fogging and various technical equipment must be done, this is Obviously complicated procedures to handle. This method is due to the necessary preconditioning of the biomass in terms of the material flow by moving and repositioning the Labeled biomass. It is not a consistently simple material flow available.

A disadvantage of the fermentation channel process is that the lattice boxes are only introduced into the fermentation channel when the reactor housing can be done. So this procedure is only conditional for one continual process for Generation of biogas suitable. Since the solid in lattice boxes through the with liquid Substrate filled The fermentation results are little influenced. It also seems to be disadvantageous, that a separate filling of the Lattice boxes before performing of the procedure is required.

The object of the invention is Dry fermentation device to create biomass that is simple and with the all process properties can be influenced. Furthermore, the Device allow it the transport process of the Biomass from its place of origin via fermentation to Compost product and the recycling of the compost product without interruption to ensure.

According to the invention, the task is to create a device for dry fermentation of biomass solved in that an immersion basin filled with perculate in a foundation at a distance and one filled with sewage Discharge basins are arranged, between which the foundation one Forms reactor floor with drainage channels tending towards the immersion basin and above so the reactor housing with a gas outlet on the top, the edges of which face down immerse into the immersion basin and the discharge basin so deep that are filled with biomass Fit the container underneath. Here are the walls of the immersion basin and the discharge basin preferably vertically. In another execution can the walls of the immersion basin and or the discharge basin in the direction of material flow Be sloping. In another version the device are instead of the immersion basin and the discharge basin Double gate locks available.

The invention of the device for dry fermentation of biomass is supposed to be based on an embodiment explained become:

The figure shows a device for dry fermentation of biomass and to carry out of the procedure.

List of the reference symbols used:

1

reactor housing

2

reactor bottom

3

foundation

4

gutter

5

Immersion pool

6

Perkulat

7

Austragbecken

8th

sewage

9

Container

10

biomass

11

gas drainage

The device for dry fermentation of biomass is in a foundation 3 at a distance with perculate 6 filled immersion basin 5 and one with sewage 8th filled discharge basin 7 arranged between which the foundation 3 a reactor floor 2 with to the immersion pool 5 inclined drainage channels 4 forms and so the reactor housing 1 with top gas drain 11 inverted is that of the edges pointing down into the immersion basin 5 and the discharge basin 7 immerse yourself so deeply that with biomass 10 filled container 9 fit underneath.

Here are the walls of the immersion basin 5 and the discharge basin 7 perpendicular.

Claims (4)

Device for the dry fermentation of biomass 10 , preferably fresh biomass harvested from the field 10 that contains little or no methane gas bacteria, characterized in that in a foundation 3 at a distance one with perculate 6 filled immersion basin 5 and one with sewage 8th filled discharge basin 7 are arranged, between which the foundation 3 a reactor floor 2 with to the immersion pool 5 inclined drainage channels 4 forms and so the reactor housing 1 with top gas drain 11 is turned, the edges of which point downwards into the immersion basin 5 and the discharge basin 7 immerse yourself so deeply that with biomass 10 filled container 9 fit underneath. Device for the dry fermentation of biomass 10 , according to claim 2, characterized in that the walls of the immersion basin 5 and the discharge basin 7 are vertical. Device for the dry fermentation of biomass 10 , according to claim 2, characterized in that the walls of the immersion basin 5 and or the discharge basin 7 in the direction of material flow 2 Slants are. Device for the dry fermentation of biomass 10 , according to claim 2, characterized in that instead of the immersion pool 5 and the discharge basin 7 Double gate locks are available