CN101280531A - The preparation process of pomace fiber used in making pomace paper - Google Patents

Abstract

Pomace fiber is used in the preparation process of making pomace paper. First, dry pomace or wet pomace is decomposed; then wood pulp or reed pulp is beaten in a beater; finally pomace is mixed with wood pulp or reed pulp, and then Add rosin glue, aluminum sulfate, PAM, and copy according to the one-time molding method. The invention carries out papermaking by mixing pomace fiber and plant fiber. The pomace fibers are pretreated with sugar washing, light deflaking and screening and purification, and are decomposed and mixed with the treated plant fibers in sequence, adding chemical additives, and making paper by conventional forming methods. The product is easy to decompose after use, and it is not easy to pollute the environment. At the same time, it reduces the pollution of the pomace waste to the environment. It can be incinerated or composted, and can also be recycled for papermaking. It can be used for ordinary food packaging.

Description

The preparation process of pomace fiber used in making pomace paper

technical field

The invention belongs to the intersecting field of papermaking industry and food industry, and in particular relates to a preparation process of pomace fiber for making pomace paper.

Background technique

my country is one of the countries with the earliest origin of fruit trees and the most abundant fruit varieties. It is also a major fruit producer in the world, with the total output ranking first in the world. Among them, the annual output of apples is more than 20 million tons, about 20% of which is used for fruit juice processing, and the annual output of apple pomace is about 1 million tons. Juice plants have long discarded pomace as waste. Because the water content of apple pomace is as high as 70% to 80%, and it is rich in soluble nutrients, it creates suitable conditions for the growth and reproduction of microorganisms. The discarded pomace will rot in a short time, become sour and smelly, causing damage to Great pollution of the environment and huge waste of resources.

Apple pomace is composed of fruit peel, fruit core and residual pulp, which contains soluble sugar, vitamins, minerals, cellulose and other substances. Using pomace can extract pectin, dietary fiber, produce jam, alcohol, citric acid, oligosaccharides , enzyme preparations, etc. However, most of them are not well utilized in China at present. According to the survey, currently 15% to 20% of Shaanxi province uses apple pomace as fertilizer and fuel, about 10% as feed, and about 70% as garbage disposal, so there are about 100,000 to 150,000 tons per year. The apple pomace is wasted in vain, and it also seriously pollutes the environment. Making full use of such waste resources is a real problem.

Contents of the invention

The purpose of the present invention is to provide a pomace fiber that fully utilizes waste resources such as pomace as raw materials for papermaking, has a simple preparation process, and can endow the paper with better solubility while ensuring the physical properties of the paper for making pomace paper. preparation process.

In order to achieve the above object, the technical solution adopted in the present invention is: first soak the dried pomace for more than 24 hours, and the number of decompression is 500r or the wet pomace is directly decomposed, the number of revolution is 300r; then the wood pulp is beaten in a PFI mill for 1000 rpm , the beating gap is 0.2mm, the mass concentration of the beating is 10%, the beating degree is ≤48°SR or the reed pulp is taken in the Valley beater, and the beating degree of the reed pulp is ≤35°SR; finally, the mass ratio will be 50% to 60% % pomace and 40% to 50% wood pulp or reed pulp, and then add 2.0% rosin gum, 2.0% aluminum sulfate, and 0.08% to 0.10% PAM to adjust the online mass concentration of the mixed pulp It is 0.3%, and it is copied according to the way of one-time forming.

The invention carries out papermaking by mixing pomace fiber and plant fiber. The pomace fibers are pretreated with sugar washing, light deflaking and screening and purification, and are decomposed and mixed with the treated plant fibers in sequence, adding chemical additives, and making paper by conventional forming methods. The product is easy to decompose after use, and it is not easy to pollute the environment. At the same time, it reduces the pollution of the pomace waste to the environment. It can be incinerated or composted, and can also be recycled for papermaking. It can be used for ordinary food packaging.

Detailed ways

Example 1, first soak the dried fruit pomace for more than 24 hours, and the number of decomposing rotations is 500r; then the wood pulp is beaten in a PFI mill for 1000 rotations, the beating gap is 0.2mm, the mass concentration of the beating is 10%, and the beating degree is ≤48°SR; Finally will mix 50% pomace and 50% wood pulp by mass ratio, then add the rosin glue of mixture quality 2.0%, the aluminum sulfate of 2.0%, the PAM of 0.08%, the online quality concentration that regulates mixed slurry is 0.3 %, copied according to the way of one-time forming.

Example 2, first soak the dried pomace for more than 24h, and the number of decomposing rotations is 500r; then the reed pulp is carried out in the Valley beater, and the degree of beating of the reed pulp is ≤ 35 ° SR; finally, 55% of the pomace and pomace are mixed according to the mass ratio 45% reed pulp is mixed, then 2.0% rosin gum, 2.0% aluminum sulfate, and 0.09% PAM are added to the mixture, and the online mass concentration of the mixed slurry is adjusted to be 0.3%.

Example 3, first soak the dried fruit pomace for more than 24 hours, and the speed of decomposing is 500r; then beat the wood pulp in the PFI mill for 1000 rpm, the beating gap is 0.2mm, the mass concentration of beating is 10%, and the beating degree is ≤48°SR; Finally will mix 60% pomace and 40% wood pulp by mass ratio, then add the rosin glue of mixture quality 2.0%, the aluminum sulfate of 2.0%, the PAM of 0.10%, the online quality concentration that regulates mixed slurry is 0.3 %, copied according to the way of one-time forming.

Example 4, firstly, the wet pomace is directly decomposed, and the number of revolutions is 300r; then the reed pulp is carried out in a Valley beater, and the beating degree of the reed pulp is ≤ 35°SR; finally, 60% of the pomace and 40% of the pomace are mixed by mass ratio. % reed pulp is mixed, then add 2.0% rosin gum, 2.0% aluminum sulfate, and 0.1% PAM to the mixture, adjust the online mass concentration of the mixed slurry to be 0.3%, and make it according to the mode of one-time forming.

Example 5, first, the wet pomace is directly decomposed, and the number of rotations is 300r; then the wood pulp is beaten in a PFI mill for 1000 rotations, the beating gap is 0.2mm, the mass concentration of the beating is 10%, and the beating degree is ≤48°SR; finally Will mix 55% pomace and 45% wood pulp by mass ratio, then add the rosin gum of mixture quality 2.0%, the aluminum sulfate of 2.0%, the PAM of 0.08%, the online quality concentration of regulating mixed pulp is 0.3% , copied according to the way of one-time forming.

Example 6, first, the wet pomace is directly decomposed, and the number of revolutions is 300r; then the reed pulp is carried out in a Valley beater, and the beating degree of the reed pulp is ≤ 35 ° SR; finally, 60, 55, 50% of The pomace is mixed with 50% reed pulp, then 2.0% rosin gum, 2.0% aluminum sulfate, and 0.09% PAM are added to the mixture, and the online mass concentration of the mixed slurry is adjusted to be 0.3%.

Claims (1)

1, pomace fiber is used for the preparation technology of making pomace paper, is characterized in that: 1) First, soak the dried fruit pomace for more than 24 hours, and decompose at a rotation speed of 500r or directly decompose the wet pomace at a rotation speed of 300r; 2) Then beat the wood pulp in the PFI mill for 1000 rpm, the beating gap is 0.2mm, the mass concentration of the beating is 10%, the beating degree is ≤48°SR or the reed pulp is taken in the Valley beater, the beating degree of the reed pulp is ≤35 °SR; 3) Finally, mix 50% to 60% pomace and 40% to 50% wood pulp or reed pulp according to the mass ratio, and then add 2.0% rosin gum, 2.0% aluminum sulfate, 0.08% to 0.10 % PAM, adjust the online mass concentration of the mixed slurry to be 0.3%, and copy it according to the one-time forming method.