Lignocellulose pretreatment device coupling cavitation and wet oxidation

Abstract

The invention discloses alignocellulose pretreatment device coupling cavitation and wet oxidation. The device comprises a stator, a rotor, a rotating shaft, an ultrasonic transducer and an oxidizing agent injection device, the stator is a sealed cylinder, the ultrasonic transducer is installed on the inner wall of the stator, a discharging port and a feeding port are formed in the two sides of the stator respectively, one side of the feeding port is connected with the oxidizing agent injection device, the rotating shaft is installed in the stator, one end of the rotating shaft extends out of the stator, the rotor is located in a cavity of the stator and installed on the rotating shaft, the rotor is an impeller with blades, cavities are formed in the blades, and cavitation through holes are distributed in the two sides of each cavity. Lignocellulose pretreatment is carried out in cooperation with hydrodynamic cavitation, ultrasonic cavitation and a wet oxidation technology, and the device has the advantages of being high in efficiency, large in treatment amount, good in treatment effect and capable of achieving continuous operation.

Description

technical field [0001] The invention relates to a device used for lignocellulose pretreatment in the biogas production process, and belongs to the technical field of biogas production. Background technique [0002] Livestock and poultry manure is a kind of biomass energy with sufficient raw materials but underdeveloped, but the livestock and poultry manure must be pretreated in an environmentally friendly way to reduce greenhouse gas emissions. Greenhouse gas emissions from the global livestock supply chain are estimated to generate 7.1 tonnes of CO2 per year, accounting for 14.5% of total human emissions. The conversion of organic biomass into biogas is currently one of the most energy-efficient bioenergy production technologies. Therefore, the treatment of different types of animal manure can effectively reduce fugitive emissions of methane and replace a part of fossil fuels. In fact, livestock manure must be pretreated due to its low biodegradability due to its high lig...

AI Technical Summary

Problems solved by technology

[0005] At present, no cavitation technology has been applied to lignocellulose pretreatment

In addition, although CN207468248U discloses "A Shear Type Cavitation Device", WO2012077889A1 discloses "FLUID HEATER", and CN104613661A discloses "A Powered Rotary Heater", although a rotating cavitator is proposed, all It is a simple cavitation generating device, without lignocellulose pretreatment function, and is not coupled with other physical and chemical strengthening methods

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