Pneumatic stirring integrated methane generator and stirring method

Abstract

The invention relates to a pneumatic stirring integrated methane generator and a stirring method. The methane generator consists of a charging pool, a discharging pool and at least two fermentation rooms, wherein the charging pool and the discharging pool are arranged at two ends and are opened in the atmosphere; the upper part of each fermentation room is partitioned by a partition wall; the bottoms of the charging pool, the fermentation rooms and the discharging pool are communicated; hemispherical gas-collecting covers made of organic glass steel materials are arranged at the tops of the fermentation rooms; and each fermentation room forms different function units. An air-lift stirring mode and a pneumatic stirring mode are adopted to overcome the defect of low utilization efficiency of the fermentation space caused by direct flow and uneven mixing of fermentation materials. Each fermentation room can operate independently, and when one of the fermentation rooms has a fault and needs to be overhauled, the normal operation of other fermentation rooms can not be affected. Automatic stirring and breaking can be realized only by opening or closing a ventilation valve without consuming power. The hemispherical gas-collecting covers made of the organic glass steel materials are arranged at the tops of the fermentation rooms, thus the methane generator has the advantages of strong air tightness, low heat conduction coefficient, very small heat dissipating capacity to the ground surface, strong overwintering capacity and capability of realizing normal operation in all seasons.

Description

technical field [0001] The invention relates to a biogas generator and a stirring method of the biogas generator. technical background [0002] At present, the common tunnel-type biogas generator with traditional concrete structure has a feed tank and a discharge tank, and there is only one fermentation room, which is straight through. The top is a long-span cement dome, which requires high air-tightness treatment technology. After operation, the materials in the fermentation room are stratified to form scum (crust), clear liquid layer and sediment layer. The fermentation bacteria cannot be fully mixed with the organic matter, and the fermentation efficiency is reduced. External power stirring and shutdown of production are required to break the shell manually, which consumes power and The labor force increases the maintenance and anti-corrosion costs of the power mixing equipment, and the engineering cost and operating cost are relatively high. Contents of the invention ...

AI Technical Summary

Problems solved by technology

After operation, the materials in the fermentation room are stratified to form scum (crust), clear liquid layer and sediment layer. The fermentation bacteria cannot be fully mixed with the organic matter, and the fermentation efficiency is reduced. External power stirring and shutdown of production are required to break the shell manually, which consumes power and The labor force increases the maintenance and anti-corrosion costs of the power mixing equipment, and the project cost and operating cost are relatively high

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