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Cavitation unit for enhanced cellulose pulp refining production

A cellulose pulp and cavitation technology, applied in cellulose pulp post-processing, fiber raw material processing, papermaking, etc., can solve the problems of limitations and high energy consumption, and achieve the effect of improving efficiency, high efficiency and good utilization rate

Active Publication Date: 2022-04-26
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the limitations and high energy consumption of the existing long cellulose refining technology, the present invention proposes a cavitation device for strengthening cellulose pulp refining production with good refining effect and high efficiency. The device is coupled with hydraulic cavitation and ultrasonic cavitation. change

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  • Cavitation unit for enhanced cellulose pulp refining production
  • Cavitation unit for enhanced cellulose pulp refining production
  • Cavitation unit for enhanced cellulose pulp refining production

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Embodiment Construction

[0034] The cavitation device for refining production of reinforced cellulose pulp of the present invention, such as figure 1 As shown, it includes a stator 7, a rotating shaft, a rotor and an ultrasonic transducer 17. The rotating shaft includes a first rotating shaft 3 and a second rotating shaft 13 . The rotors comprise a first set of rotors 8 and a second set of rotors 11 .

[0035] The stator 7 is a closed cylinder, which is enclosed by two half-shells, and the outer sides of the two half-shells are tapered. Ultrasonic transducers 17 are distributed on the inner wall of the stator 7 . Each ultrasonic transducer 17 is connected with an external ultrasonic generator 18 to induce ultrasonic cavitation. see figure 2 , the ultrasonic transducers 17 are embedded in the inner wall of the stator 7 along the axial and circumferential directions in the form of 2 to 8 ultrasonic transducers at equal intervals. The number of ultrasonic generators 18 is 1-4, the frequency is 40-8...

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Abstract

A cavitation device for strengthening cellulose pulp refining production, including a stator, a rotating shaft, a rotor and an ultrasonic transducer, the rotating shaft includes a first rotating shaft and a second rotating shaft, the rotor includes a first set of rotors and a second set of rotors, and the stator is airtight Cylinder, the opposite sides of the stator are provided with feed inlet and outlet respectively, ultrasonic transducers are distributed on the inner wall of the stator, the first rotating shaft and the second rotating shaft are respectively installed on the opposite sides of the stator, the first group Both the rotor and the second group of rotors are arranged in the stator and are installed on the first rotating shaft and the second rotating shaft respectively, and each of the first group of rotors and the second group of rotors includes at least two spaced discs and the outer peripheries of each disc There are rotor cavitation holes distributed on the surface, and stator cavitation holes are distributed on the inner wall of the stator. The invention applies cavitation technology to pulp refining, and has the advantages of simplicity, high efficiency, good utilization rate, etc., not only has the effect of physical stirring, but also accelerates the process of pulp refining by using cavitation reaction.

Description

technical field [0001] The invention relates to a device for strengthening the refining production of cellulose pulp by using hydraulic and ultrasonic cavitation technology, and belongs to the technical field of paper production. Background technique [0002] Papermaking includes the following stages: cellulose production, refining, press dehydration, drying and rolling. In the above preparation process, the refining of cellulose pulp is a key step in obtaining high-quality paper. However, this process is slow and expensive, and there has been a lack of effective technology and equipment for the refining of conifer long fibers. Refining techniques include acid hydrolysis, high pressure homogenization and mechanical processing (grinding, ultrasonic cavitation, freeze crushing) and so on. Among them, ultrasonic cavitation has been proved to be an effective pulp refining method, but it is limited to refining shorter fibers, and the disadvantage of using ultrasonic cavitation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C9/00D21D5/00
CPCD21C9/00D21D5/00
Inventor 陈颂英孙逊玄晓旭丛山昊林劲松
Owner SHANDONG UNIV
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