Ultrasonic Biopulping Technology

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In the process of ultrasonic pulping, water is used as the ultrasonic transmission medium, and the mechanical and treasure effects of ultrasound are used to impact and peel off the fiber raw materials. Based on the frequency characteristics of ultrasound, it assists biological agents in selectively reacting with cellulose, hemicellulose, and lignin components, separating the fibers and completing the pulping process.

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Principles of Ultrasonic Pulping
In the process of ultrasonic pulping, water is used as the ultrasonic transmission medium, and the mechanical and treasure effects of ultrasound are used to impact and peel off the fiber raw materials. Based on the frequency characteristics of ultrasound, it assists biological agents in selectively reacting with cellulose, hemicellulose, and lignin components, separating the fibers and completing the pulping process.
Advantages of Ultrasonic Biopulping
1) The ultrasonic biological pulping technology simplifies the process flow, abandons the alkali recovery system and bleaching section, and eradicates the environmental pollution caused by the extensive use of chemicals such as alkali, sulfur, and chlorine in the papermaking industry from the source, making it environmentally friendly.
2) A single machine can complete pulping and bleaching, integrating them into one. Bleaching principle: During the ultrasonic pulping reaction, the cavitation effect produces a series of highly oxidizing active free radicals, which not only assist in the degradation of lignin but also serve as a green and environmentally friendly bleaching agent.
3) Expanding the source of papermaking raw materials, in addition to wood raw materials, it also fully utilizes agricultural waste such as bamboo, giant fungus grass, rice straw, wheat straw, asparagus, reed, and hemp.
4) The investment is small, accounting for 40% of the traditional pulping investment. The pulping yield is high, the fiber quality is good, and the cost is low.
Overall, ultrasonic pulping has multiple advantages such as zero emissions, no pollution, no odor, energy conservation, and reduced production costs.
Ultrasonic pulping can be divided into continuous and intermittent types, and ultrasonic frequency forms can be divided into multi frequency and single frequency. Ultrasonic work can be divided into pulse wave and continuous wave.
Ultrasonic pulping process flow
Material preparation → Ultrasonic reaction kettle (synchronous completion of pulping and bleaching) → Spray bin → Extraction of raw liquid → Screening and squeezing machine → Wet pulp sales
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The extracted raw liquid is processed and reused for production