PL68718Y1 - Mobile device for dry anaerobic fermentation - bioreactor - Google Patents

Description

Pattern description

The subject of the utility model is a mobile device for dry anaerobic digestion-bioreactor, which is designed to produce biogas from agricultural mass such as grass, silage, manure, crop residues, grain and the like. The produced biogas is consumed in a cogeneration unit that produces electricity and heat.

Slovak Patent Specification No. SK 278554 describes a mobile fermentation tank used until now, consisting of a heat-insulating casing and equipped with air (gas) aeration and discharge devices. The heat-insulating jacket forms the walls, ceiling and door of the mobile biological fermentation tank and consists of shaped plates with ribbed surfaces. In the floor of the mobile biological fermentation tank, channels were made open to the interior of the mobile biological fermentation tank. Pipes connected to a common source of compressed air and equipped with nozzles (exhaust openings) are laid in the channels.

Slovak utility model No. 5987 is also known, which describes a container fermentation tank for biomass processing, composed of a multi-layer insulating casing, a water and gas-tight door for loading and unloading biomass and a control unit connected to fermentation parameters sensors inside the tank. Inside are heaters and on top there are spray nozzles connected to the tank. The fermentation vessel comprises at least one berth comprised of a frame, floor, side walls, and front wall. The floor, side walls and front wall can be filled with mesh. In the lower part of the frame, the berth is equipped with a chassis and in the corners there are guide rollers.

The drawback of the above solution is the fact that the biomass is not heated directly, so it is not possible to precisely and quickly control and regulate the temperature.

The purpose of the utility model is to design a mobile device for dry anaerobic digestion having all the advantages of container mobile fermentation tanks and further advantages of a multi-chamber fermentation tank according to this technical solution.

Mobile device for dry anaerobic digestion - a bioreactor in the form of a parallelogram, containing a fermentation chamber for biomass stacking and processing, closed with a gas-tight door, and a separate technological space, composed of an insulating jacket with an opening for biogas discharge, with a supporting structure on the outside and heaters inside , is characterized by the fact that each of the two fermentation chambers consists of two fermentation chambers closed separately with gas-tight doors, one technological space, which is made between the fermentation chambers and one control unit, and from the inside it is equipped with a metal jacket that separates the heaters from the interior fermentation chambers and in the upper part, nozzles for spraying slurry installed, which are an integral part of a closed system, also equipped with a slurry tank installed in the technological space, connected with a discharge pipeline with a pump for draining excess percolate, while inside each fermentation chamber there are sensors monitoring the parameters of fermentation, which is controlled by a control unit, while heaters made of pipes with a heat transfer medium for heating or cooling the inside of the fermentation chambers are installed in the walls, floor and ceiling of the chambers fermentation. The internal metal jacket is made of stainless steel or painted sheet.

The mobile device for dry anaerobic digestion is composed of two fermentation chambers closed separately with gas-tight doors, one technological room between the chambers and one control unit. The fermentation process takes place independently of one another in the individual fermentation chambers and thus allows the simultaneous processing of various types of materials. Another advantage of such a device is the fact that it ensures almost continuous production of biogas at a relatively low power of the device.

The internal metal jacket of the fermentation chamber can be made of stainless or painted sheet.

The advantage of this construction of the device is its modular design, which allows for parallel connection of many such devices, depending on the required capacity, as well as the mobility of the device, which, if required, allows for a relatively simple change of the installation location without the basic requirements of construction preparations. Another advantage is

Claims (2)

contact heat transfer between the heated inner wall of the chamber and the biomass, which ensures a very fast, accurate and efficient temperature control of the fermentation process. The gas-tightly separated process room allows physical parameter checks, maintenance and service during fermentation to be performed without interrupting the process. Mobile device for dry anaerobic digestion - bioreactor is shown in the drawing, in which Fig. 1 shows a two-chamber mobile device for dry anaerobic digestion, and in Fig. 2 a side view - vertical section of a bioreactor digester. Mobile device for dry anaerobic digestion - the bioreactor is in the form of a parallelogram and includes two fermentation chambers 2 for arranging and processing biomass 1_, which separates the technological space 3. Each fermentation chamber 2 is closed with a gas-tight door 6. The device consists of an insulating jacket 5, which is equipped with openings 12 for biogas discharge from fermentation chambers 2, and heaters 10, which are installed in the walls, floor and ceiling of both fermentation chambers 2. The fermentation chambers 2 from the inside are equipped with a metal jacket 13 made of painted sheet metal, which separates the heaters 10 from the inner space of chambers 2. In the upper part of the fermentation chambers 2, nozzles 7 for slurry spraying, constituting an integral part of a closed system, also equipped with a slurry tank 9, installed in the technological space 3, connected by a discharge pipeline 8 with a pump (not shown) to discharge excess p ercolate. Inside both fermentation chambers 2 there are sensors H monitoring the parameters of the fermentation, which is controlled by the control unit 4. The method of biogas production in the bioreactor according to the present solution is that biomass 1 is loaded into the fermentation chamber 2, which will be closed with a gas-tight door 6. By means of a nozzle 7, 2 slices are supplied to the fermentation chamber from the tank 9. Biomass 1 is heated with heaters 10 to the operating temperature of 36 to 42 ° C for the fermentation time from 20 to 90 days. Biomass in the absence of air and under the influence of methanogenic bacteria decomposes, producing biogas, which is discharged through the opening 12, and the liquid percolate is discharged through the pipeline 8 to the tank 9. Protective reservations 1. Mobile device for dry anaerobic digestion - bioreactor in the form of a parallel-wall, containing a fermentation chamber for biomass stacking and processing, closed with a gas-tight door, and a separated technological space, composed of an insulating jacket with an opening for biogas discharge, with a supporting structure on the outside and heaters inside, characterized in that each of the two fermentation chambers (2) consists of two fermentation chambers (2) closed separately with gas-tight doors (6), one technological space (3), which is made between the fermentation chambers (2) and one the control unit (4) and on the inside it is equipped with a metal jacket (13) that separates the heaters (10) from the inside of the fermentation chambers (2) and in the upper part, nozzles (7) for spraying slurry are installed, which are an integral part of a closed system, also equipped with a tank (9) slurry installed in the technological space (3), after connected by a discharge pipeline (8) with a pump for removing excess percolate, where each fermentation chamber (2) has sensors (11) monitoring the parameters of the fermentation, which is controlled by the control unit (4), and the heaters (10) are made of pipes with a heat transferring factor for heating or cooling the inside of the fermentation chambers (2) is installed in the walls, floor and ceiling of the fermentation chambers. 2. The device according to claim 3. The method of claim 1, characterized in that the inner metal casing (13) is made of stainless steel or painted sheet.