UA146896U - BIOGAS REACTOR WITH AIR HEATING - Google Patents

Abstract

The biogas reactor contains a tank, a pipe, a stirrer, a hopper with a gate valve and an unloading auger. In addition, it contains a hollow shaft and blades, through which warm air is injected, as a result of which the substrate is heated while stirring.

Description

The useful model belongs to the fields of processing of agricultural raw materials and utilization of organic waste of the agro-industrial complex, food industry and communal economy, in particular, to installations for the production of biogas and organic fertilizers during the fermentation of a multicomponent substrate containing organic materials or their waste.

Known biogas plant IBiogas plant: patent Mo 63825 Ukraine: IPC СО2Е 11/04,

MO and 201102656; statement 03/09/2011; published 25.10.2011, Bull. Mo 20), which contains a tank covered with insulation, a consumer pipe with a tap, a vertical propeller mixer on a hollow shaft, above which is a loading hopper with the first gate valve and a protective gas distribution grid. Under the vertical propeller stirrer there is an opening for removing the spent biomass substrate with a second gate valve in the lower part of the installation, the tank is wrapped with an electric heating cable with a thermostat, two heat exchange circuits, each of which consists of heat exchangers, and the first heat exchanger is connected to a gas pipeline, with a compressor and a biomass substrate preparation unit, and the second - with a spent biomass substrate pipeline with a fecal pump and a biomass substrate preparation unit.

The disadvantage of this biogas plant is low efficiency due to insufficient mixing and heating of the biomass substrate.

The closest analogue is a biogas plant (Biogas plant: patent Mo 36453 Ukraine:

IPC CO2E 11/04. MO and 200806844; statement 19.05.2008; published 27.10.2008, Bull. Mo 201, which contains a tank closed by a greenhouse frame, a consumer pipe, a mixer placed on a shaft in which a biomass heater is installed, a loading hopper with a gate valve.

The disadvantage of the closest analogue is low productivity due to uneven heating of the substrate and the technical complexity of the design.

The basis of the useful model is the task of improving the biogas reactor with air heating by increasing the efficiency, maintaining the substrate heating temperature for the release of biogas.

The given task is solved by the fact that a biogas reactor containing a tank, a pipe, a stirrer, a hopper with a gate valve and a discharge auger, according to a useful model,

Zo additionally contains a hollow shaft and blades through which warm air is pumped, as a result of which the substrate is heated with its simultaneous mixing.

The essence of the useful model is explained by the drawings, which show the scheme of the biogas reactor in Fig. 1, in Fig. 2 - section along A-A.

The air-heated biogas reactor contains a tank 1 with an internal stirrer 2, a loading hopper 3, with a built-in gate valve 4, a discharge auger 5 driven by a gear motor 6, an electrocontact pressure gauge 7 and a consumer pipe 8, equipped with a mechanical valve 9 , a branched pipe 10, through which part of the biogas is fed to the burner 11, which, in turn, heats the air supplied by the compressor 12 to the hollow shaft 13 and the hollow blade 14, the hollow shaft is driven through the belt transmission 15 from the electric motor 16.

The biogas reactor with air heating works as follows. When the gate valve 4 is open, the substrate is fed to the tank 1 through the loading hopper C, which is filled to 2/3 of the volume. For an effective fermentation process, we turn on the electric motor 16, then through the belt transmission 15, the agitator 2 is activated.

Also, to increase the efficiency of fermentation in the biogas reactor, a heat-resistant mode is used, in which the temperature inside the biogas reactor must be maintained within 55...55 "С, therefore, part of the obtained biogas is fed through the branched pipe 10 to the burner 11, which heats the air supplied by the compressor 12 to the hollow shaft 13 and the hollow blades 14 of the stirrer 2. Through the holes in the hollow blades, heated air enters the tank 1 in which the substrate is located and heats it by moving it. To maintain the temperature within closed limits, the amount of biogas on the burner 11 is regulated by the electronic valve 17.

Biogas produced as a result of fermentation of the substrate accumulates in the upper part of the tank 1. At this time, the electrocontact manometer 7 monitors the pressure. In the event of an increase in pressure, the mechanical valve 9 opens, biogas is discharged from the tank 1 through the consumer pipe 8 and the pressure decreases.

During the decrease in the intensity of biogas release, the biomass substrate is unloaded from tank 1. For this, the motor-reducer 6 is turned on, which transmits the torque to the unloading auger 5.

Thus, the use of partial shipment of the obtained biogas to heat the air supplied to the bioreactor stirrer makes it possible to significantly increase the efficiency of heat transfer and ensure the constant release of biogas during a certain period of time.

Claims (1)

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