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INVENTION
Russian Federation Patent RU2073650
Digester for biogas plants
Name of the inventor: Faskhutdinov Vagiz Z.; Faskhutdinov Timur Vagizovich
The name of the patentee: Faskhutdinov Vagiz Z.; Faskhutdinov Timur Vagizovich
Address for correspondence:
Starting date of the patent: 1995.04.18
Usage: perepabotka animal waste from organic raw materials. Essence: digester is designed as a housing with camera and prepare leaven four cameras digestion of animal waste. At the same time it is equipped with a loading and unloading risers, heat exchangers and gas plenum biogas with a tap on the pipeline to the consumer
DESCRIPTION OF THE INVENTION
The invention relates to the agricultural industry, in particular to the digester for biogas plants, and can be used in the recycling of organic materials.
The prototype of the present invention is a digester for biogas plants, comprising a cylindrical container, a pipeline, a device for mixing and breaking the surface crust of the fermentation mass and a gas collector pipeline [1].
The disadvantage of the digester is the high material consumption, low productivity and lack of reliability of disinfection of animal waste.
The proposed digester reduces material consumption of biogas plants and increase their productivity, and reliability of waste disinfection by sequential movement of the cells digester.
The technical effect is achieved in that the digester has a housing with a stirrer and a gas plenum, the boot and the drain risers is provided with heat exchangers, offset from the vertical axis along the impeller rotation, while it is divided into the chamber for preparing the masterbatch leaven required when running the digester, and four camera for the fermentation mass, the inner surface of the masterbatch with the plenum chamber completely, and the other four on top of the plenum chamber at the height of 1/3 covered with epoxy.
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FIG. 1 shows a diagram of the digester for biogas plants. FIG. 2 shows an A-A sectional view of FIG. 1,
FIG. 3 shows the cross section B-B of FIG. 1.
Digester includes a housing 1, a boot riser 2, the mixer 3, the gas collector 4 and the piping 5, valve 6, a dual partition 7 with insulating material 8, the partition 9, the main gas collector 10, drain standing 11, the drive mechanism 12, the agitator 3, insulating layer 13, heat exchangers 14, 15, 16 and protective layer 17, the chamber C, D, E, F, G.
Digester is part of the installation process procedures for the disinfection of animal waste. It works as follows.
Digester can work in starting and operating conditions. The start-up mode, the camera B, C, D, E, F are filled with water at a temperature corresponding to the technological regime. Then, from cattle waste (feces, bedding straw, feed leftovers, swabs) by grinding and normalizing humidity prepare a homogeneous mass and boot it through the riser 2 is injected into the lower part of the chamber B. After completing the camera in close valve 6, a heat exchanger 14 weight subjected to the process temperature, mass producing periodic stirring with a stirrer 3 connected to a drive mechanism 12, and is grown at a constant temperature with the mother starter reproduction methane bacteria. Producing biogas by bacterial activity of gazoobmennika 4 through pipeline 5 is supplied to the consumer. When the camera's output in the steady state operation at open valve 6, telling the camera The cameras C, D, E, G. In the future, into the chamber in an infusion of fresh produce in the mass amount of up to 20% of the volume of the chamber B through every 6 hours work digester. Thus gradually achieve the transfer of all subsequent chambers C, D, E, F operating mode.
Switching to operating mode is carried out after the launch of the digester (it is determined by the daily output of biogas per cubic meter volume of processed weight), and the work of the digester is adjusted so that the camera is in the final preparation was used for the mass to ferment. Fermentable mass thanks to partitions 9 passes to the exit path, similar to the letter w (omega), providing reliable disinfection of the processed mass, and thus 10% higher productivity digester.
Offset arrangement of heat exchangers 14 and 15 relative to the vertical axis of the digester provides the gravitational mass movement, which also contributes to the stability of the process.
Building 1 is a carrier part of the digester. Given the aggressive environment in the internal surface of the chamber, plenum 4 to the other cells C, D, E, F at the top surface at 1/3 height and inside the main gas collector 10, metal parts 3 are covered by the agitator 16 and the epoxy resin 17.
The insulation material 8 and the insulating layer 13 are intended to reduce heat loss through the wall of the digester. Digester works on the flow diagram, when filling fresh homogeneous mass through the feed riser 2, fermented mass (organic sludge) is forced out through the discharge drain 11 on the vehicle or in the recovery of thermal energy. The generated biogas from the main plenum 10 through the pipeline 5 is transported to the consumer.
CLAIM
Digester for biogas installations, comprising a cylindrical casing, a pipeline, a device for stirring and breaking the surface crust of the fermentation mass and gas collector and the piping, characterized in that the housing has a stirrer and two gas plenum, the boot and the drain risers is provided with heat exchangers, offset relative to the vertical axis and rotating agitator move while it is divided into the chamber for preparing the masterbatch leaven required when running the digester, and four cameras for fermentation mass, the inner surface of the masterbatch with the plenum chamber completely, and the other four of the plenum chamber from the top chamber to the last 1/3 of the height coated with epoxy resin.
print version
Publication date 28.03.2007gg
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