DD158700A3 - DEVICE FOR GENERATING BIOGAS - Google Patents

Abstract

The invention is used in the recovery of waste products from small and large agricultural animal production plants and organic municipal waste. The goal is the production of biogas according to the flow principle with additional generation of manure and hot water. Task is to reduce the design effort, energy use and operating and maintenance costs. This is achieved according to the invention in that the digestion process takes place in a vessel with a scotch-like subdivision, upstream and downstream of which heat exchangers. The digestion process is activated by the supply of the self-generated gas and hot water and automated as much as possible via signal and control or control devices. The residual heat d. Faulgutes is transferred by means of a heat exchanger to a medium which receives a higher temperature by a heat pump to use it then, if necessary, for heating the digestion by means of heat exchanger or hot water in particular by means of heat transfer medium. The device is heat-sealed and has appropriate Reinigungsoeffnungen.

Description

227937 7

Title of the invention

Device for producing biogas Field of application of the invention

The invention is applicable to the recovery of waste products from small and large agricultural animal production plants and from organic municipal waste.

Characteristic of the known technical solutions

The known technical solutions are divided into alternating, storage and flow systems, whereby the flow system represents the relevant state of the art. US Pat. No. 19 90 523 describes "Heth'Od of Producing Methane", FRG Laid-Open Publication No. 25 35 756 "Containers with apparatus for producing methane gas from organic waste" and from Austria the biogas production plant of Pirma BVT (Y ¥ enzlaff, R ·; Biogas, problems market overview, recommendations, top agrar 5/1930, pages 98 ··· 106) known as the most obvious solutions

In the first two solutions is disadvantageous that they can be used only as a small investment, have an electrically driven mixing device, the sedimentation of the container and the mixing device is promoted and a

«227937 7

large operating and maintenance effort is required ·

In the latter solution is disadvantageous that it is structurally very expensive, high heat losses of Paulgutes, the sedimentation in general and clogging of the settling tank promoted to the inefficiency of Hauptgärbehälters v / ird, a large operating and maintenance effort is required, no V / heat recovery and hot water preparation takes place and the digestate no heat is supplied to activate the digestion process ·

Object of the invention

The aim of the invention is a device for the production of biogas for the recovery of waste products from small and large agricultural animal production plants and of organic municipal waste. The disadvantageous expenditure for the construction including /? Insulation, the operation and the maintenance should be reduced In addition, a heat recovery and hot water preparation as well as a high degree of prefabrication of the device and manure extraction should be provided.

Explanation of the essence of the invention

With the invention of the object is achieved by the utilization of waste products from small and large agricultural animal production plants and organic municipal waste to produce biogas, the benefits of Durchflußsystems, such as continuous gas generation, better automation ability, capacity utilization and extension, used v / earth · The design effort, additional energy consumption, operating and maintenance costs are reduced,

227937 7

Hot water is generated as required · The digestion process additionally produces manure which is more environmentally friendly than the original starting product. According to the invention, this is achieved by eliminating the mixing device and the energy required therefor, optimizing the shape and allocation of the Paul rooms, heat losses, sedimentation and Schwimmdeckenbildung be enabled, the Paul process by supplying heat and gas activated, a Y / armerückungsungsanlage is provided, which connects two heat exchangers with each other according to the principle of cold-heat coupling and in addition, if required, a hot water preparation is arranged ·

In the inlet device signal device and thermostat and in the Hauptfaulkamiaer signal generator are provided which control the level and the temperature of the Paulgutes and the temperature of the medium in the heat exchanger ring line weitestgebend automatically or regulate _e

In the direction of the gate several chambers are arranged »These chambers are formed in particular by flexible walls, these walls do not fill the entire cross section of the Paulraumbehälters * It is preferably installed vertically and vertically hanging walls.

The mobility of the walls is achieved by making them of flexible material and / or attached to hinged devices. Thus, a jerky port movement of the gas bubble from chamber to chamber and a swirling of the Paulgutes is achieved by the gas pressure. By the shaping of the cross section of the Paulraumbehälters or the method of attachment of the movable walls in the Paulraumbehalter tipping the movable walls is prevented to the container bottom

227937 7

The overflow walls are provided with a sawtooth-like comb strip, so that during overflow the Paulgut is affected in its port movement and thus reinforcing the sebwaHartigeη onward occurs · The baffles on the overflow walls direct the incoming or overflow Paulgut direction-oriented and thus contribute to the vortex formation.

Gas is withdrawn from the device via various gas bells. The gas is stored in a gas storage device. Gas is preferably injected into the inlet device for additional activation of the biogas formation and surge-like port movement of the Paulgut from one gas chamber into the other via a gas exchange line. Sine port movement of Paulgutes within the device takes place by increasing the pressure of the resulting or additionally introduced gas either in the direction of the inlet or outlet device ·

If required, the Paulgut can be returned via the drainage device 13. Cleaning openings are provided on the bottom and on the longitudinal ends of the Paulraum container.

In the inlet and outlet device are heat exchangers known per se, which are interconnected by a heat exchanger ring line ·

The entire device is thermally insulated. The Paulraum container preferably has a cylindrical shape.

The residual heat of Paulgutes in the drain device is passed on the principle of cooling-heat coupling via a heat exchanger ring, in which preferably in the direction of the inlet means a heat pump known per se and the system belonging to the expansion valve are arranged after the heat exchanger in the direction of the drain device ·

227 93 7 7

Bin with or without heat exchanger is arranged, • do if necessary to heat the foul material in the inlet device or to produce · hot water ·

embodiment

The invention will be explained in more detail using the example.

Fig. 1 longitudinal section through the device

The gate direction consists of the septic tank 3 with upstream inlet device 1 and downstream drain device 13th

The septic tank 3 is arranged with overflow walls 7, on which baffle elements 10 and comb strip 8 are arranged, and 'leuchwänden 6 in pre-rinse chamber 4, main digestion chambers 5 and Bachfaulkammer 19 and provided with gas bells 9 and cleaning openings 11 ·

In the inlet device 1 obturator 15 and heat exchanger 2 are inserted. The heat exchangers 2 in the drainage device 13 and inlet device 1 are connected to the heat exchanger ring line. In this heat exchanger ring line 20, the heat pump 21 is preferably arranged in the direction of the inlet device 1 and the associated expansion valve is inserted in the heat exchanger ring line 20 in the direction of the drainage device 13. The storage 27 with heat exchanger 30 is integrated to obtain hot water in this heat exchanger ring line between the heat pump 21 and inlet device 1 and a hot and cold water line 23, 29 arranged · To fill the heat exchanger ring 20 with a medium filling line 22 and shut-off valve 25 are arranged · To the Gas bells 9, the gas extraction line 12 is arranged with gas control device 16 in a conventional manner and opens into the gas storage 28 a. The gas exchange line 14 with pressure increasing device 24 preferably leads from the gas reservoir 28 to the inlet device 1 and drainage device 13.

227937 7

The inlet and outlet device 1, 13 are to be arranged several times if necessary »

By means of signal device 17, 18 and thermostat 26 in the main digestion chamber 5 or inlet device 1, the fill level and the temperature of the Paulgutes of the medium in the heat exchanger ring 20 and the obturator 15 is controlled or controlled ·

The number of Hauptfaulkammern 5 depends on the length of the Faulraumbehälters 3 · About the inlet device 1, in which the Faulgut is heated by? ITärmetauscher 2, by means of obturator 15, the metered inflow of the Faulgutes into the pre-rinse 4 and is preferably by increasing the gas pressure via the gas exchange line 14 with pressure increasing device 24 in the main digestion chambers 5, Nachfaulkammer 19 and drain device 13 cyclically forward, the obturator is closed respectively · The residual heat of Faulgutes is with a medium through the heat exchanger 2 of the drain device 13, the heat exchanger ring 20 and heat pump 21 through If necessary, the digestate is heated via the heat exchanger 2 of the inlet device 1 or hot water is constantly provided via the heat exchanger 30. "In direct hot water supply via the storage test the Entn Imme- diation of hot water only with excess heat, ie sufficient temperature of the digested material, possible

Claims (1)

227937 7 invention claim
Point 1 Device for the production of biogas in Paulraumbehälter with gas bells and exhaust ducts, control devices for gas extraction, temperature and level and heat pump, according to the flow principle under utilization of the pressure of biogas produced, characterized in that in Torfaulkammer (4) »main digestion chamber (5) and Hachfaulkammer (19) divided lazy space container (3) with movable overflow walls (7) arranged thereon comb strips (S) and baffle elements (10) and immersion walls (6) is provided, an inlet device (1) with shut-off (15) and Heat exchanger (2) and a drain device (13) with heat exchanger (2), wherein the heat exchanger (2) through the heat exchanger ring line (20) and preferably the heat pump (21) in a known manner in front of the inlet device (1) and the associated relaxation valve in front of the drain device (13) are arranged, la the heat exchanger ring line (20) a memory (27) with Kaltwas The gas extraction line (12) with the inlet and outlet device (1, 13) via the gas reservoir (28) and the gas exchange line (14 ) are connected to pressure booster (24) « Point 2 Device according to point 1, characterized in that the Paulraumbehälterfo has a cylindrical shape, thermally insulated and horizontally arranged and is variable in the dimensioning · 227937 7 point 3 Gate direction according to point 1, characterized in that the submerged walls (6) and overflow walls (7) are designed to be elastic or semi-movable · - See 1 page drawing -