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Deinking agent for waste paper

The technology of deinking and saponifying agent for waste paper is applied in the field of deinking agent and deinking agent for waste paper, which can solve the problems of unstable performance and excessive fiber loss of waste paper, and achieve the effect of good papermaking performance.

Inactive Publication Date: 2012-09-19
陈云红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waste paper recovered by the existing deinking technology loses a lot of fiber and its performance is not stable enough

Method used

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  • Deinking agent for waste paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Put 4.5 kilograms of sodium metasilicate, 3 kilograms of sodium alkylbenzene sulfonate, and 0.6 kilograms of polyoxyethylene sorbitan monostearate into the reaction tank, then add 1500 kilograms of water and stir evenly, and the water temperature rises to 50°C, then put the waste paper into the tank and soak for 2 hours to deink, and the deinked slurry is washed 3 times with a cylinder deinking agent to remove ink particles.

Embodiment 2

[0012] Put 5 kilograms of sodium metasilicate, 3.5 kilograms of sodium alkylbenzenesulfonate, and 1 kilogram of polyoxyethylene sorbitan monostearate into the reaction tank, then add 1600 kilograms of water and stir evenly, and the water temperature is raised to 55°C, then put the waste paper into the tank and soak for 2.5 hours to deink, and the deinked slurry is washed 3 times with a cylinder deinking agent to remove ink particles.

Embodiment 3

[0014] Put 5.5 kilograms of sodium metasilicate, 4 kilograms of sodium alkylbenzene sulfonate, and 1.2 kilograms of polyoxyethylene sorbitan monostearate into the reaction tank, then add 1800 kilograms of water and stir evenly, and the water temperature rises to 60°C, then put the waste paper into the tank and soak for 3 hours to deink, and the deinked slurry is washed 3 times with a cylinder deinking agent to remove ink particles.

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Abstract

The invention discloses a deinking agent for waste paper. The deinking agent for the waste paper comprises the following components in part by mass: 4.5 to 5.5 parts of sodium metasilicate, 3 to 4 parts of sodium alkyl benzene sulfonate, 0.6 to 1.2 parts of polyoxyethylene sorbitan monostearate, 0.5 to 1 part of saponifier and 1,500 to 1,800 parts of water. An inorganic medicine is used as a main deinking agent in the deinking agent for the waste paper; and through deinking, the original degree of purification and whiteness of waste paper fiber and the flexibility of raw fiber can be effectively recovered, and the paper can have relatively high papermaking performance.

Description

technical field [0001] The invention belongs to the field of fine chemicals and relates to a deinking agent, in particular to a waste paper deinking agent. Background technique [0002] Waste paper is an important renewable resource, and the recycling of waste paper is an effective way to solve the three major problems faced by the paper industry, such as shortage of raw materials, energy shortage and serious pollution. The key technology of using recycled waste paper to make recycled pulp is the chemical treatment of waste paper and deinking. Deinking is the process of stripping the printing ink from the waste paper fibers and removing the ink with the help of deinking equipment. The purpose of deinking is to remove impurities. 1. While purifying pulp, produce pulp with high whiteness as much as possible. Whether the deinking process is good or bad will directly affect the final quality of paper or remove other substances that interfere with the papermaking process. The wa...

Claims

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Application Information

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IPC IPC(8): C09D9/04
Inventor 陈云红
Owner 陈云红
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