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Apparatus and method for capturing stickies in pulp and papermaking systems

A technology of pulping and papermaking and capturing devices, which is applied in papermaking, papermaking machines, textiles and papermaking, etc. It can solve the problems of lack of accuracy and precision of analysis results, difficult shearing force, and bulky instruments and equipment, and shorten the adsorption reaction. Time, accurate and reliable results, and the effect of accelerating the adsorption process

Active Publication Date: 2019-03-01
RISINGSTAR BIOTECH GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not address how to distinguish different colored pollutant particles in papermaking slurry
Moreover, this method also has an obvious defect: the matrix is ​​suspended in the pulp by using the "insertion" method, and the matrix is ​​difficult to withstand the large shear force generated by the pulp flow.
[0010] However, in general, so far, all sticky matter determination methods, no matter what the principle is based on, have some serious defects, such as, or the equipment used is too bulky or too expensive, or The analysis procedure is too cumbersome or time-consuming, or the analysis results lack good enough accuracy and precision, etc.
For these reasons, it is difficult to use these methods as a routine test to monitor changes in stickies in pulp and paper systems
Also, of the existing methods, almost none involve the analytical identification of individual stickies particles
In addition, few people have paid attention to the value of preserving sticky particles as physical archives

Method used

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  • Apparatus and method for capturing stickies in pulp and papermaking systems
  • Apparatus and method for capturing stickies in pulp and papermaking systems
  • Apparatus and method for capturing stickies in pulp and papermaking systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] 1. Experimental conditions.

[0123] 1. Prepare the capture device for stickies in the pulp and paper making system.

[0124] The device for capturing stickies in the pulping and papermaking system of this embodiment includes a reaction vessel, an adsorption test piece and an electric stirrer, the reaction vessel includes an accommodation cavity for containing the papermaking slurry, and the adsorption test piece is fixed on the inside the accommodating cavity.

[0125] The accommodating cavity includes a cylindrical body, a specimen holder and a base, the base is detachably mounted on the bottom of the cylinder through a threaded connection, and the specimen holder is clamped and fixed to the base through the base. Between the cylinder body and the base, the test piece holder is provided with an adsorption installation area for fixing the adsorption test piece.

[0126] The internal diameter of the cylinder in this embodiment is 100 mm, and the height is 150 mm. The ...

Embodiment 2

[0145] 1. Experimental conditions.

[0146] Referring to Example 1.

[0147] Second, the experimental method.

[0148] This example examines the effect of stirring speed on adsorption efficiency when the capture device of the present invention is used to capture stickies in papermaking slurry.

[0149] In a series of adsorption reactions, the adsorption reaction time was fixed at 120 seconds, but the stirring speed was varied from 150 rpm to 1400 rpm.

[0150] 3. Experimental results.

[0151] The experimental results are shown in the table below.

[0152] Table 2. Effect of stirring speed on adsorption efficiency

[0153]

[0154] From the above results, it can be seen that the moderate rotation speed is beneficial to the adsorption specimen to capture the granular stickies. If the stirring speed is too fast, the trapped stickies will drop.

Embodiment 3

[0156] 1. Experimental conditions.

[0157] 1. Preparation of the sticky matter capture device.

[0158] The sticky matter capturing device of this embodiment includes a reaction container and an adsorption test piece, the reaction container includes an accommodating cavity for accommodating papermaking slurry, and the adsorption test piece is fixed in the accommodating cavity.

[0159] Considering that the adsorption test piece should have a certain impact strength against papermaking slurry, a pair of frame-shaped test piece holders are also provided. The outer edge size of the frame-shaped test piece holder is 70mm×70mm, and the opening in the middle is 54mm×54mm.

[0160] The adsorption test piece includes a support layer and an adsorption layer coated on the surface of the support layer. It is made of "Mingting" transparent sealing tape (purchased from: Wal-mart store, the support layer is polypropylene, and the adsorption layer is polyacrylate adhesive). binder) instead...

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PUM

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Abstract

A device for capturing sticky materials in a pulping and papermaking system, comprising a reaction vessel comprising an accommodating cavity (110) for accommodating a papermaking pulp; and an absorption test piece (200) having an absorption surface and used for adsorbing granular sticky materials in a papermaking pulp flowing through the absorption test piece, the absorption surface of the absorption test piece (200) being located inside the accommodating cavity (110). A method using the device comprises allowing a papermaking pulp at a pre-determined sampling point in the pulping and papermaking system to flow through the surface of the absorption test piece and have an adsorption reaction with the absorption test piece so that granular sticky materials in the papermaking pulp are adsorbed to the surface of the absorption test piece. The capturing device uses the reaction vessel to provide support for the absorption test piece and can withstand the impact of the flow of the papermaking pulp in every direction.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking, in particular to a device and method for capturing stickies in a pulping and papermaking system. Background technique [0002] The current pulp and paper industry is facing an increasingly serious problem: how to control the adverse effects of stickies mixed into the pulp on the production process and product quality. These stickies mainly come from three aspects: one is the lipophilic substances that already exist in papermaking fibers, such as fatty acids, resin acids, fatty acid esters, sterols and sterol esters, etc.; Introduced coating adhesives, printing inks, hot-melt adhesives, pressure-sensitive adhesives and other substances; the third is certain chemicals added in the pulp and papermaking process, such as reinforcing agents, sizing agents, defoamers and fillers. [0003] When the sticky matter is deposited on the forming wire, it will block the mesh holes, cause diffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21G9/00
CPCD21G9/00G01N33/34
Inventor 张福山王祥槐杨春才
Owner RISINGSTAR BIOTECH GUANGZHOU