Continuously feeding and discharging dynamic dry method anaerobic fermentation apparatus and method thereof

Abstract

The invention relates to a continuously feeding and discharging dynamic dry method anaerobic fermentation apparatus and a method thereof. The apparatus is characterized in that a horizontal type rotating-drum silo accommodating anaerobic fermentation materials can be remained sealed and continuously fed and discharged when rotating. Adjustments of anaerobic fermentation parameters such as premixing of raw materials and anaerobic fermentation inoculums, temperature, water content, pH value, etc. are finished at the same time. When being used in producing biogas, the apparatus is advantaged in that secondary pollution problems are not existed because of no biogas slurry; anaerobic fermentation parameters are easy to control; and that the apparatus produces the biogas uniformly and is suitable for industrialization of the biogas; Materials are remixed continuously in a reactor and in a dynamic anaerobic fermentation state, so that the apparatus has high gas yield and occupies small area.

Description

technical field [0001] The invention relates to a dry anaerobic fermentation equipment and a method thereof. Background technique [0002] The existing dry anaerobic fermentation technology has two modes of batch feeding and discharging and continuous feeding and discharging. Germany's garage-type biogas technology and China's MCT biogas technology (a dry fermentation equipment and method, ZL200510082723.1) both belong to the dry anaerobic fermentation technology of batch feeding and discharging. This technology generally uses a loader to feed and discharge materials, and the cost is relatively low, but the disadvantage of using it in biogas production is: after the materials enter the reactor at one time, the anaerobic fermentation process goes through the initial, peak, and decay stages, and the gas production is not high. Stable, with a difference of several times between high and low. Generally, multiple reactors are used and started at intervals to balance them, so the...

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Problems solved by technology

This technology generally uses a loader to feed and discharge materials, and the cost is relatively low, but the disadvantage of using it in biogas production is: after the materials enter the reactor at one time, the anaerobic fermentation process goes through the initial, peak, and decay stages, and the gas production is not high. Stable, with a difference of several times between high and low. Generally, multiple reactors are used and started at intervals to balance them, so the floor area is large; the one-time feed is large, and it is difficult to realize the adjustment and control of anaerobic fermentation parameters. The industrialization level remains to be seen. Improvement; the material in the reactor is in a static state, which is not conducive to the diffusion of the inoculum and affects the gas production effect

Continuous feeding and discharging is beneficial to industrial operation and management, but the material remixing ability in the vertical silo is poor, and long-term operation is prone to material sticking to the wall, which affects the gas production effect and is difficult to maintain

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