Tobacco sheet slurry preparation method and millstone structures

A technology for tobacco sheet and pulp, which is applied to pulp beating method, pulp beating/refining method, tobacco and other directions, can solve the problems of over-grinding, some not being ground, affecting the quality of tobacco sheet, uneven thickness of tobacco stems, etc. , to reduce the energy consumption of papermaking, improve the effect of fiber removal, and save the power consumption of fiber removal

Active Publication Date: 2017-11-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, there is a common phenomenon that the thickness of the tobacco stems obtained after the tobacco stems are defibrated in the first stage (that is, high-consistency refining or low-consistency defibering, also referred to as defibrillation), that is, some of the tobacco stems are overgrinded. , Some are not ground, so it is necessary to increase the beating intensity in the subsequent beating process. The result is that when the final pulp is formed, too many raw materials are over-ground to affect the quality of the tobacco sheet, and cause the entire pulping process High energy consumption and obvious energy waste

Method used

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  • Tobacco sheet slurry preparation method and millstone structures
  • Tobacco sheet slurry preparation method and millstone structures
  • Tobacco sheet slurry preparation method and millstone structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A kind of slurry preparation method of tobacco sheet in this embodiment, such as figure 1 shown, including the following steps:

[0058] (1) After the tobacco stems are screened and cleaned, the water-soluble substances in the tobacco stems are dissolved by extraction, and solid-liquid separation is carried out;

[0059] (2) After separation, the tobacco stems are subjected to high-concentration defiberization (that is, high-concentration defiberization), and then mixed with tobacco powder, and then extracted 2 to 4 times after mixing; wherein, the moisture content of the tobacco stems during high-concentration defiberization is 65% ~80%, using high-consistency grinding discs (that is, the disc structure composed of the following two cooperating defibrating discs) to defibrate. The process of high-consistency defibrating is through the relative The movement rubs and separates the tobacco stems;

[0060] (3) The extracted mixture is firstly subjected to one-stage beati...

Embodiment 2

[0065] In this embodiment, a grinding disc structure for preparing tobacco sheet pulp is mainly used for the defibrating process of step (2) in the slurry preparation method described in Example 1, and the grinding disc structure includes two matching defibrating grinding discs , the defibrating grinding teeth 3 on the two defibrating discs are interlaced (such as Figure 4 shown), and form the first material flow channel 7 between the defibrating grinding teeth of the two defibrating grinding discs (as shown in Figure 5 8 shows tobacco stems, and 9 shows tobacco dust); among the two defibrating grinding discs, one is the defibrating dynamic grinding disc 2, and the other is the defibrating static grinding disc 1;

[0066] The two defibrating discs have the same structure and are both disc-shaped, such as figure 2 or image 3 As shown, from the center of the disc to the outer circumference, the defibrating grinding disc is provided with crushing area a, pre-defibrating are...

Embodiment 3

[0072] In this embodiment, a milling disc structure for preparing tobacco flakes is mainly used in the beating process of step (3) in the slurry preparation method described in Example 1. The milling disc structure includes two matching milling discs , one section of beating grinding teeth 12 on two sections of beating grinding discs are interlaced and embedded (such as Figure 9 shown), and form the second material flow through 13 between the first beating teeth of the two first beating grinding discs (as Figure 10 Shown, shown in figure 8 is tobacco stem, and shown in 9 is tobacco dust); Among the two sections of beating millstones, one is a section of beating dynamic millstone 10, and the other is a section of beating static millstone 11;

[0073] The two first-stage beating discs have the same structure and are both disc-shaped, such as Figure 6 or Figure 8 As shown, from the center of the disc to the outer circumference, a section of the beating grinding disc is prov...

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Abstract

The invention discloses a tobacco sheet slurry preparation method and millstone structures. The method includes the steps that tobacco stems are extracted first and then subjected to solid-liquid separation after being screened and washed; then the tobacco stems is mixed with tobacco waste through high-concentration fiber dissociation, and extraction is conducted after mixing; an extracted mixture is subjected to first-stage beating and second-stage beating, and slurry for sheet making is formed. The millstone structures fall in three kinds, the first kind comprises two fiber dissociation millstones, and a crushing area, a pre-fiber dissociation area and a fiber dissociation area in sequential connection are arranged on each fiber dissociation millstone; the second kind comprises two first-stage beating millstone, and a defibering area, a first pre-beating area and a first-stage beating area in sequential connection are arranged on each first-stage beating millstone; the third kind comprises two second-stage beating millstones, and a rough grinding area, a second pre-beating area and a second-stage beating area in sequential connection are arranged on each second-stage beating millstone. According to the tobacco sheet slurry preparation method and the millstone structures, the material production requirements can be rapidly met, and the beating degree can be lowered by 5 degrees of SR or above, so that the drainage property of a production process is improved, and energy consumption of production is reduced.

Description

technical field [0001] The invention relates to the technical field of tobacco sheet production, in particular to a tobacco sheet slurry preparation method and a millstone structure. Background technique [0002] The manufacture of paper-making tobacco sheets is an important technology in the tobacco industry at present. Adding an appropriate amount of tobacco sheets to cigarettes can save tobacco raw materials to the greatest extent and effectively reduce the cost of cigarettes; The physical properties and chemical components are adjusted and improved according to people's wishes or requirements, effectively reducing the amount of tar and other harmful substances in cigarettes, and stabilizing the quality of cigarette products, thus helping to improve the internal quality of cigarettes, and reducing and improving the harmful components of tobacco an important technical measure. [0003] At present, in my country's papermaking reconstituted tobacco leaf production process, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21D1/30A24B3/14
CPCA24B3/14D21D1/02D21D1/303
Inventor 朱小林李友明
Owner SOUTH CHINA UNIV OF TECH
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