Cavitation device for strengthening refining production of cellulose pulp

A cellulose pulp and cavitation technology, which is applied in the post-treatment of cellulose pulp, fiber raw material treatment, papermaking, etc., can solve the problems of limitations and high energy consumption, and achieve improved efficiency, increased contact area, increased sharpness and friction force effect

Active Publication Date: 2021-04-30
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 device for strengthening refining production of cellulose pulp
  • Cavitation device for strengthening refining production of cellulose pulp
  • Cavitation device for strengthening refining production of cellulose pulp

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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

The invention discloses a cavitation device for strengthening refining production of cellulose pulp. The cavitation device comprises a stator, a rotating shaft, rotors and ultrasonic transducers, wherein the rotating shaft comprises a first rotating shaft body and a second rotating shaft body, the rotors are composed of a first set of rotors and a second set of rotors, the stator is a closed cylinder, a feeding port and a discharging port are formed in the two opposite sides of the stator respectively, the ultrasonic transducers are distributed on the inner wall of the stator, the first rotating shaft body and the second rotating shaft body are installed on the two opposite side faces of the stator respectively, the first set of rotors and the second set of rotors are arranged in the stator and installed on the first rotating shaft body and the second rotating shaft body respectively, each of the first set of rotors and the second set of rotors at least comprises two separated wheel discs; rotor cavitation holes are distributed in the outer peripheral surface of each wheel disc; and stator cavitation holes are distributed in the inner wall of the stator. According to the invention, the cavitation technology is applied to paper pulp refining, the advantages of being simple, high in efficiency, good in utilization rate and the like are achieved, physical stirring effect is achieved, and the refining process of paper pulp is accelerated through a 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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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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