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A dry fermentation device, biogas technology, applied in biochemical cleaning devices, enzymology/microbiology devices, solid-phase fermentation bioreactors, etc., can solve the problems of insufficient thermal energy utilization, complicated heating methods, and large footprint , to achieve the effect of improving volume capacity, compact structure and saving floor space
Inactive Publication Date: 2009-10-21
UNIV OF SCI & TECH BEIJING
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[0004] The object of the present invention is to solve the separation of stacking retting tank and anaerobic fermentation tank, arrange heat absorbing plate in stacking tank and heat exchanger in anaerobic fermentation tank, use biomass itself to produce in the process of aerobic fermentation The method of increasing the fermentation temperature of the biogas digester by using more heat has the problems of large floor area, uncompact structure, complicated heating methods, and insufficient use of heat energy. It provides a method that uses biomass itself in the process of aerobic fermentation. Produced An integrated biogas dry fermentation device that maintains a certain temperature of the biogas digester
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Embodiment approach 1
[0030]Embodiment 1: Use enzyme bacteria to pretreat corn stalks, then crush the corn stalks to 3~5cm, put them into the outer cylinder retting tank for retting, and the oxygen required during this period is determined by the suction hood, air guide pipeline and wind cap Composed ventilation control system supply, stack retting 5d, remove from the outlet of the outer cylinder, then add the inoculum and pig manure, the ratio is 30:1 carbon-nitrogen ratio, fermentation concentration is 20%, pH value is 7.0 After that, these materials are sent to the anaerobic fermentation tank of the inner cylinder through the inlet of the inner cylinder for fermentation. At this time, the outer cylinder retting tank continues to add the pretreated and crushed corn stalks, after the retting treatment, it is mixed with the inoculum and pig manure, and then moved into the inner cylinder anaerobic fermentation tank for fermentation, and so on. , until the volume of the fermented material in the inne...
Embodiment approach 2
[0031] Embodiment 2: The fermentation material can be other organic solid materials, such as rice straw, wheat straw, distiller's grains, etc. The processing method is the same as that in the first embodiment.
Embodiment approach 3
[0032] Embodiment 3: The organic solid material is pretreated by white rot fungus, and then crushed. Others are the same as Embodiment 1.
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Abstract
The invention relates to an integrated methane dry fermentation device and belongs to the field of energy conservation. The device consists of two parts, namely an anaerobic fermentation tank 9 of an inner cylinder and a stack retting tank 5 of an outer cylinder; and the anaerobic fermentation tank 9 of the inner cylinder is wrapped by the stack retting tank 5 of the outer cylinder, wherein the stack retting tank 5 of the outer cylinder consists of an outer cylinder feed port 10, an outer cylinder discharge port 16, a heat insulating layer 15, a thermal reflecting film 26, an outer cylinder filter screen 18, an outer cylinder fermenting liquid outlet 25, a liquid storage box 22, an air draft cover 27, an air cap 3, an air guide pipeline 4, a gravel stratum 17 and a net 11; and the anaerobic fermentation tank 9 of the inner cylinder consists of an inner cylinder feed port 6, an inner cylinder discharge port 19, an air outlet 8, a temperature sensor 12, an inner cylinder filter screen 20, an inner cylinder fermenting liquid outlet 21, a temperature controller 13, a liquid storage box 22, an electric heater 24, a circulating water pump 14, a liquid storage pipeline 1, a one way valve 2 and a nozzle 7. The device strengthens a ventilation control system, a liquid stream stirring system and a temperature controlling system of the methane dry fermentation device, has the advantages of reasonable structure, high processing efficiency, energy conservation, convenient subsequent processing, no environmental pollution and the like and is in particular suitable for the methane fermentation of a low-temperature region.
Description
technical field [0001] The invention belongs to the field of energy utilization and environmental protection, and relates to an integrated biogas dry fermentation device, specifically a device that can use the heat generated by the aerobic stacking biomass itself in the process of aerobic fermentation to maintain the inner An integrated biogas dry fermentation device with the temperature required for anaerobic fermentation. Background technique [0002] The dual crises of energy and environment make the development and research of green renewable energy the focus of the work of various countries. According to the estimates of relevant experts, biomass energy will become an important part of the future sustainable energy system. Biomass biogasification technology as an alternative energy source has been applied for decades and various biogas fermentation tank structures have been continuously improved under the potential research of scholars from various countries. Just lik...
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