Marsh gas reactor with crusting resistance device

Abstract

The invention discloses a marsh gas reactor with a crusting resistance device, which comprises a fermenting tank, a sealing cover and a crusting resistance device, wherein the sealing cover covers the fermenting tank; a marsh gas outlet hole is arranged on the sealing cover; and the crusting resistance device comprises slag baffle plates and a gas collecting cover with a horn structure. The gas collecting cover is arranged on the inner wall of the fermenting tank, and the opening faces downwards. A gas through hole I is arranged on the gas collecting cover. The slag baffle plates are staggered and arranged on the periphery of the inner wall of the gas collecting cover, and form a certain included angle with the horizontal plane. As the gas collecting cover with the horn structure is arranged in the fermenting tank, and the slag baffle plates are staggered and arranged on the periphery of the inner wall of the gas collecting cover, and form a certain included angle with the horizontal plane, when the gas pressure in the fermenting tank is changed, the marsh gas liquid fluctuates up and down, the marsh gas slag is sheared by the slag baffle plates in a nonuniform way, is abraded and extruded by the slag baffle plates, and is prevented from further floating onto the liquid surface, and then the invention prevents the marsh gas slag from crusting on the liquid surface, and also can break the formed crust.

Description

technical field [0001] The invention relates to a biogas reactor, in particular to a biogas reactor with an anti-crust device. Background technique [0002] In the traditional liquid fermentation biogas reactor, there is a phenomenon of biogas slurry stratification under static conditions: the biogas slurry is divided into bottom sediment layer, reactive layer, supernatant liquid layer and top scum layer from bottom to top. The main reason for the formation of scum crusts is that the biogas fermentation raw materials contain many solids and cellulose that are not easy to hydrolyze, most of which can be degraded by microorganisms to form biogas and biogas slurry, and the remaining biogas residues Floating on the surface of the liquid under the action of buoyancy. Since the hydrolysis rate of cellulose in the upper part of the biogas residue is lower than the rate of acid and methane production, the attached growth of microorganisms absorbs the soluble nutrients of the fermen...

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Problems solved by technology

[0004] In the prior art, the main methods for treating the surface scum and crust are as follows: 1. Use a stirrer to stir the surface scum and crust, but there is energy consumption, and the equipment is complicated, and it is easy to damage the airtightness of the biogas reactor and affect the fermentation effect , the moving speed of the material in the pool should not exceed 0.5m / s, which is the critical speed of microbial life; 2. High-level discharge and reflux recoil, artificially destroy the crust, but it is inconvenient to use and consumes a lot of manpower and material resources; 3. Use a screen A shell breaking device with a screen shape is fixed on the inner wall of the fermentation tank wall. The scale shell floats up and down with the action of air pressure and water pressure. Squeeze to move the scum, but it can't effectively break the crust. There are also "bamboo cages" to guide the air, and a bamboo cage with a diameter of 15cm is installed in the pool. The service life of the equipment is difficult to guarantee, and the effect is not obvious; method, which destroys the continuous use of biogas, and consumes manpower and material resources, which reduces the service life of the fermentation tank

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