Introducing screw for biogas plants
AssigneeHugo Vogelsang Maschinenbau GmbH
InventorHugo Vogelsang
Life of this patent
Estimating the term…
Abstract
A screw conveyor for introducing organic matter into a biogas digester that is under internal gas pressure. A biogas plant may be provided with such a screw conveyor, and methods for feeding organic solids to such a biogas plant may be performed. A plug section of the screw conveyor has an expansion region in which the passage cross-section between the conveying screw and the screw pipe widens in the conveying direction and a constriction region located downstream from the expansion region, in which the passage cross-section between the conveying screw and the screw pipe is reduced in the conveying direction.
Claims6
-19. (canceled)
A screw conveyor for introducing organic matter into a biogas digester that is under internal gas pressure, said screw conveyor comprising:
- a screw pipe extending in a longitudinal direction and having an inlet opening for organic matter in the region of a first screw pipe end and an outlet opening for the organic matter in the region of a second screw pipe end,
- a conveying screw extending in the longitudinal direction and arranged inside the screw pipe and which can be made to rotate by means of a screw conveyor drive,
- a digester connector for connecting the outlet opening directly to the biogas digester that is under gas pressure,
- a plug section for compacting the organic matter in order to reduce any passage of gas through the screw conveyor, and
- a separation section disposed upstream from the plug section, comprising a plurality of openings in the screw pipe and a fluid collection apparatus outside the screw pipe.
A screw conveyor for introducing organic matter into a biogas digester that is under internal gas pressure, said screw conveyor comprising:
- a screw pipe extending in a longitudinal direction and having an inlet opening for organic matter in the region of a first screw pipe end, an outlet opening for the organic matter in the region of a second screw pipe end, and an inner wall,
- a conveying screw (i) extending in the longitudinal direction, (ii) arranged inside the screw pipe, (iii) which can be made to rotate by means of a screw conveyor drive, and (iv) spaced from the inner wall so as to form a passage cross-section,
- a digester connector for connecting the outlet opening directly to the biogas digester that is under gas pressure,
- a plug section for compacting the organic matter in order to reduce any passage of gas through the screw conveyor, and
- a flushing fluid port for feeding a flushing fluid into the passage cross-section in the region of the second screw pipe end downstream from the plug section.
Dependencies are inferred from the claim text.