RU124261U1 - METANTEC - Google Patents

Abstract

A digester for aerobic digestion of liquefied organic waste, containing a tank of a vertical cylindrical container with nozzles for supplying organic waste, unloading the spent substrate and biogas removal, characterized in that, in order to increase the fermentation efficiency, the cylindrical container is enclosed in a polystyrene foam insulating casing and has a conical bottom and spherical dome.

Description

The utility model relates to agriculture, namely to plants for the processing of organic agricultural waste and can be used for the production of biogas, organic fertilizers and feed additives.

A known installation for the processing of organic waste (A.S. No. 1743413, publ. 06/30/92, bull. 24), containing a reactor with a flat inclined bottom.

The disadvantage of this installation is that the horizontal shape with a flat bottom does not contribute to the intensification of spontaneous mixing of the fermented mass and complicates the process of unloading sludge.

A known installation for the processing of organic waste (AS No. 1748693, publ. 07/23/92, bull. 27), having a chopper, electrical installation with an internal combustion engine, fuel tank, manure, submersible pump, screw conveyor, reactor.

Its disadvantage is the complexity of the design, the large working volume of the tank and the complexity of operation.

Known metentec (patent No. 2143430, publ. February 27, 2001, bull. No. 6), containing a spherical tank with a concentric partition.

Its disadvantage is the difficulty in manufacturing a spherical tank with a concentric partition, high heat loss to the environment.

The closest analogue to the proposed solution is rightly suitable for methane tanks for anaerobic digestion of organic waste (manure, litter, etc.) (RV No. 2284967 C1, 10.10.2006).

Its disadvantage is the horizontal shape of the bottom and dome, which does not contribute to the intensification of mixing of the fermented mass and does not ensure the reliability and stability of the methane tank.

The proposed model is a sealed steel tank with pipes for loading fresh manure (litter) and unloading the processed substrate (effluent) with a pressure sensor.

To maintain the fermentation temperature at 36 ° С, the cone bottom of the methane tank is covered with a heating cable of ENGL-1 length of 5.84 m., Which is automatically turned on and off by the temperature regulator ART-18-BN. In order to reduce heat loss to the environment, the methane tank is enclosed in a 10 cm thick cylindrical polystyrene casing.

In Fig.1 shows a metanec in section. The case of a methantec is mounted on supports.

Metantec - a vertical cylindrical tank 1 with a conical bottom 2 and a spherical dome 3, mounted on supports 4, is enclosed in a casing 5 of expanded polystyrene.

Installation works as follows:

In the reactor 1 through the loading pipe 6 is loaded liquefied fresh manure (litter) with a moisture content of 92-93%. The spherical shape of the methanec dome prevents gas from entering the reactor, and also contributes to the release of biogas into the atmosphere. Fresh manure (litter) is first loaded into the funnel 8, after filling which valve 7 is opened and manure (litter) flows into the reactor vessel. Biogas through pipe 9 is collected in a gas tank and then used as fuel.

The discharge of recycled waste (effluent) is carried out periodically through the pipe 10 of the discharge device in the bottom cone by opening the valve 11.

The volume of the discharged mass should be equal to the dose of loading a fresh portion of manure (litter), which eliminates overfilling of the reactor and clogging of the nozzle opening for biogas exit.

The conical shape of the bottom ensures the quality of unloading of the processed waste (effluent), and the spherical dome prevents air from entering the reactor and ensures the fermentation of organic waste with a high degree of reliability.

The pressure in the reactor vessel is monitored using a gauge gauge 12 mounted in a spherical dome of the methane tank.

The fermentation temperature at 30-36 ° C is supported by a heating tape 13 of the ENGL-1 brand, a temperature regulator of the 14th brand ART-18-BN.

To reduce heat loss to the environment, the methane tank is enclosed in a cylindrical casing 5 made of polystyrene foam 10 cm thick.

The volume of methantec is 0.7-1.0 m ^3. , Which contributes to the flow of active spontaneous mixing of the fermented mass inside the reactor, which eliminates the need for an additional mixing device.

The utility model ensures the reliability and stability of the methane tank, is easy to manufacture and operate, does not require large financial investments and due to thermal insulation reduces heat loss to the environment.

It is intended for use in small livestock farms to obtain from fresh manure (litter) animals - organic fertilizers, combustible biogas and feed additives, and also improves the ecological situation of rural settlements.

Claims (1)

A digester for aerobic digestion of liquefied organic waste, containing a tank of a vertical cylindrical container with nozzles for supplying organic waste, unloading the spent substrate and biogas removal, characterized in that, in order to increase the fermentation efficiency, the cylindrical container is enclosed in a polystyrene foam insulating casing and has a conical bottom and spherical dome.

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