Biogas Plant

Abstract

The invention relates to a biogas plant (1) of the type comprising, at least, one anaerobic digester (2) to obtain biogas from organic waste material (3), and which further comprises: at least one graphene synthesis reactor (4), and a biogas supply (5) as a source of carbon for said reactor (4), coming from the digester (2).

Claims

1. A biogas plant of the type comprising at least one anaerobic digester to obtain biogas from organic waste material wherein it comprises: at least one graphene synthesis reactor comprising a chemical vapour deposition reactor, a tunnel furnace with a deposition chamber for deposition on a substrate, at least a gas source, and a biogas supply as a source of carbon for said reactor, coming from the digester, flow controls arranged in the biogas supply and in the gas source, prior to the inlet thereof into the reactor, in order to regulate inlet flow to control the synthesis of graphene or diamond film, wherein the reactor further comprises a low-pressure generator which even reaches a vacuum, for improving the deposition of graphene or diamond film on the substrate.

2-5. (canceled)

6. The biogas plant according to claim 1, wherein it comprises at least one energy generator combusting the biogas from the digester.

7. The biogas plant according to claim 1, wherein it comprises an emergency torch.

8. The biogas plant according to claim 1, wherein it comprises an additional outlet for digestate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 shows a schematic view of the biogas plant of the invention.

DESCRIPTION OF A PRACTICAL EMBODIMENT OF THE INVENTION

[0013] The biogas plant (1) of the invention of the type comprising, at least. one anaerobic digester (2) to obtain biogas from organic waste material (3), and in accordance with the invention comprises: [0014] at least one graphene (20) synthesis reactor (4), and [0015] a biogas supply (5) as a source of carbon for said reactor (4), coming from the digester (2).

[0016] Ideally, the reactor (4) comprises a chemical vapour deposition (CVD) reactor since it is capable of producing very thin films of the material, which is an effect that is sought. Said reactor (4) comprises a tunnel oven (40) with a deposition chamber (41) for deposition on a substrate (42) (copper for example) and at, least, one gas source (43) (hydrogen and/or argon), as well as the source of carbon which constitutes the supply (5) of biogas.

[0017] The arrangement of flow controllers (45) in the biogas supply (5) and in the gas source (43) is preferred to be located before the inlet thereof into the reactor (4) in order to regulate the inlet flow thereof to control the synthesis of graphene or diamond film.

[0018] Furthermore, it has been envisaged that the reactor (4) comprises a low-pressure generator (46), which even reaches a vacuum, and which can also act as a by-product extractor since it improves the deposition of graphene on the substrate.

[0019] Similarly, the plant (1) can comprise, at least, one energy generator (6) combusting the biogas from the digester (2), such that the production of energy and/or graphene can be combined or alternated. The FIGURE shows that the energy generator (6) is a cogenerator that produces electric energy (9) and thermal energy (10), part of which can be used to favour the operation of the digesters (2). The possible arrangement of an emergency torch (7) as a safety measure has also been envisaged.

[0020] Moreover, the plant comprises an additional outlet (8) for digestate, which can be used to obtain fertiliser, and which accumulates, for example, in the corresponding tank (80).

[0021] Having sufficiently described the nature of the invention, in addition to the practical embodiment, it is hereby stated that the arrangement indicated above and shown in the attached drawings may be changed in details provided that they do not change the fundamental principle.