Anaerobic fermentation system based on synergistic gas spray pipe

Abstract

The invention discloses an anaerobic fermentation system based on a synergistic gas spray pipe. The synergistic gas spray pipe comprises a main pipe section, a reducing section, a throat pipe sectionand an expansion section which are connected in sequence. According to the synergistic gas spray pipe disclosed by the invention, a higher gas flow rate can be obtained after gas at the inlet passes through the synergistic gas spray pipe, so that the stirring and mixing capacity of materials in an anaerobic fermentation tank can be effectively improved, and the energy consumption is reduced. Through reasonable assembly of the synergistic gas spray pipe and the anaerobic fermentation tank, the operation and maintenance interval time of the high-solid-content / dry-type anaerobic engineering is prolonged, and the tank cleaning time during maintenance can also be shortened. The efficient gas stirring device disclosed by the invention can be used for a material stirring process of high-solid-content and dry-type anaerobic fermentation tanks in an operation process, promotes the mixing homogenization and the hard layering of high-concentration materials in the anaerobic fermentation tank, andis convenient for restarting the anaerobic fermentation tank which are shut down. Compared with mechanical stirring devices and previous gas stirring devices, the device has the characteristics of economy, high efficiency and high applicability.

Description

technical field [0001] The invention relates to the technical field of environmental engineering solid waste disposal and recycling, in particular to an anaerobic fermentation system based on a synergistic gas nozzle. Background technique [0002] Compared with the wet anaerobic digestion process, the high solids / dry anaerobic fermentation has a stronger processing load, a higher volumetric gas production rate, water saving, less biogas slurry production or no discharge of biogas slurry, simple post-treatment and operating costs Low-level advantages, it is increasingly used in the treatment of organic solid waste such as livestock and poultry waste and kitchen waste in Europe and other foreign economically developed markets. In recent years, dry anaerobic fermentation technology has also been used more in China. To alleviate the contradiction between the demand for recycling policies and the gap in the processing capacity of organic solid waste such as domestic waste. [00...

AI Technical Summary

Problems solved by technology

However, the structural design of the current biogas mixing system is still insufficient. The outlet nozzle of the biogas delivery pipe is designed to penetrate deep into the anaerobic tank and protrude from the bottom surface of the tank for a certain distance, so that the materials around the protruding pipeline cannot be blown up by the pressurized gas well, resulting in The material is easy to accumulate in this area, and the effective volume of the tank will be reduced after long-term operation; for the cleaning and maintenance of the accumulated material, mechanical vehicles cannot be used due to the densely covered pointed nozzles protruding from the surface of the tank, and the tank needs to be cleaned manually, which greatly Prolonged tank cleaning maintenance time, resulting in long shutdown of the project, which is not conducive to stable operation and commissioning start

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