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Apparatus for manufacturing nano-fine products and method for manufacturing nano-fine products

A micro-product technology, applied in the field of devices for manufacturing nano-micro products, can solve the problems of easy blocking and unstable quality, and achieve the effect of high productivity

Active Publication Date: 2017-11-24
CHUETSU PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the homogenization treatment method disclosed in Patent Document 1, since the pulp is easy to clog the small-diameter orifice 102 between the valve plate 105 and the valve 106, the pressure is adjusted by automatic control of inserting or pulling out the valve 106. , but there is a problem of unstable quality

Method used

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  • Apparatus for manufacturing nano-fine products and method for manufacturing nano-fine products
  • Apparatus for manufacturing nano-fine products and method for manufacturing nano-fine products
  • Apparatus for manufacturing nano-fine products and method for manufacturing nano-fine products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1. First, through-holes 27a, b are formed in the rubber tube 9 by the high pressure generated by the circulation of water or fine polysaccharide slurry. Secondly, the polysaccharide slurry flowing in the circulation path of the rubber tube 9 is treated only once with high-pressure water to make it nano-sized. The supplied fibrous polysaccharide was adjusted to a 3% slurry with hardwood bleached pulp (LBKP) and circulated. The pressure of the injected high-pressure water was set at 200 MPa. The concentration of the obtained nano fine slurry was 1.09%. 200 cc of the nano fine slurry that has been processed only once is filtered with a Buchner funnel. The time required for filtration is 80 seconds in the case of untreated pulp, but 25 minutes for nano-fine pulp. From then on, it can be confirmed that the pulp has been nano-sized as long as the dehydration time is required.

[0075] [Table 1]

[0076]

before processing

Example 1

conce...

Embodiment 2

[0080] Embodiment 2, same as Embodiment 1, spray high-pressure water from the hole injection port 15 of the hole injection part 5 of the second liquid medium supply path 4 to the hardwood bleached pulp (LBKP) pulp flowing in the polysaccharide slurry supply path 3 material, pass it through and recycle it. The jet high pressure water pressure is set to 200MPa. The concentration, freeness, transmittance (%), polymerization degree and sedimentation height of the recovered nano fine slurry are measured. The freeness was evaluated by the amount of water filtered and dropped from 200 cc of a 0.1% CeNF aqueous solution. The transmittance (%) was evaluated by the transmittance of a 0.1% CeNF aqueous solution, and was measured at wavelengths of 400 nm and 600 nm. In addition, the concentration, freeness, The transmittance (%) and the degree of polymerization were also measured as Comparative Example 1.

[0081] [Table 2]

[0082]

[0083]

[0084] ※1 The freeness is the amou...

Embodiment 3

[0088] Example 3: The nano fine slurry obtained in Example 2 is injected from the orifice injection port 15 of the orifice injection part 5 of the second liquid medium supply path 4 and circulated in the second liquid medium supply path 4 .

[0089] The injection pressure was set at 200 MPa. Measure the concentration, freeness, transmittance (%), degree of polymerization, and sedimentation height of the nano-fine slurry that is reclaimed for each number of cycles.

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Abstract

Provided are an apparatus for producing nanofine products and a method for producing nanofine products, which are highly productive and can produce nanofine products while minimizing the decrease in the degree of polymerization associated with cracking. The polysaccharide slurry is circulated in the polysaccharide slurry supply path (3) through the chamber (2). Specifically, the polysaccharide slurry in the bucket (7) is circulated in the circulation path (9) formed with vinyl chloride pipes, rubber pipes, etc. by the pump (8). On the other hand, the non-polysaccharide slurry is circulated in the second liquid medium supply path (4) through the chamber (2). Specifically, the non-polysaccharide slurry in the bucket (10) is circulated in the circulation path through the heat exchanger (12) and the plunger (13) by using the pump (11). In this way, the non-polysaccharide slurry circulating in the second liquid medium supply path (4) is subjected to perforation to the polysaccharide slurry circulating in the polysaccharide slurry supply path (3) and circulating in the chamber (2). injection.

Description

technical field [0001] The invention relates to a device for manufacturing nano-fine products and a method for manufacturing nano-fine products. Background technique [0002] The natural fiber form of cellulose is well known as produced by plants such as woody plants such as broad-leaved wood or coniferous wood, herbaceous plants such as bamboo or reed, some animals represented by sea squirts, and cellulose represented by acetic acid bacteria. Some fungi, etc. The cellulose molecules have a structure assembled into fibers and are called cellulose fibers. In particular, cellulose fibers with a fiber width of 100 nm or less and an aspect ratio of 100 or more are generally called cellulose nanofibers (CNF), which have excellent properties such as light weight, high strength, and low thermal expansion rate. [0003] Natural CNF does not exist in the form of single fibers except for CNF produced by some fungi such as acetic acid bacteria. Most of the CNFs exist in a micron-siz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/18B02C19/06D21H15/02
CPCB02C19/06D21H15/02D21H11/18B02C19/068B02C19/061B02C19/066B02C19/063B02C19/065
Inventor 田中裕之桥场洋美
Owner CHUETSU PULP & PAPER
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