Biomass-base high-efficiency deinking agent, and preparation method and application thereof

Abstract

The invention belongs to the field of papermaking chemicals, and concretely discloses a biomass-base high-efficiency deinking agent, and a preparation method and application thereof. The preparation method comprises the following steps: fusing rosin, adding palmitic acid and plant oleic acid, and uniformly mixing; and under the stirring condition, adding a sodium hydroxide solution into the uniformly-mixed raw materials, and reacting at 85-95 DEG C for 1-5 h, so as to obtain the biomass-base high-efficiency deinking agent. The biomass-base high-efficiency deinking agent is prepared by taking the natural regenerable biological resource as the raw material. The biomass-base high-efficiency deinking agent is biodegradable, green and environment-friendly. The preparation method is efficient, energy-saving, low in pollution and free of separation and postprocessing. The final product does not need separating and purifying, can be directly applied, and provides conditions for energy saving and clean production. The obtained biomass-base high-efficiency deinking agent can extremely well improve paper whiteness and reduce residual ink as an efficient deinking agent.

Description

technical field [0001] The invention belongs to the field of papermaking chemicals, and in particular relates to a biomass-based high-efficiency deinking agent and its preparation method and application. Background technique [0002] Due to the increasing shortage of plant resources and the increasing requirements for environmental protection, the recycling of secondary fibers has attracted the attention of countries all over the world. Compared with chemical pulping and chemical mechanical pulping, waste paper pulping has obvious advantages. First, it greatly reduces the discharge load of the pulp and paper industry, and reduces the impact on the environment of waste water and emissions caused by chemical pulp or chemical mechanical pulp. The second is to save resources. It is estimated that every ton of waste paper used can save 3-4m 3 wood; the third is to save investment, compared with chemical and chemical mechanical pulp, the investment saves about 30%. However, in t...

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent application whose publication number is CN103756402 discloses a special deinking agent for old newspapers based on biomass, including rapeseed oil, coconut oil, palm oil, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid One or more than two kinds of deinking agents are prepared as raw materials. Some of these deinking agents have insufficient foam quantity, and some foam quantity is sufficient but the foam stability is relatively poor.

Using these deinking agents to treat waste paper pulp, the deinking performance is not ideal, and the quality of the produced products is low, which is quite different from the deinking performance of the deinking agents currently used by enterprises.

The Chinese patent application whose publication number is CN101177558 discloses a special deinking agent for old newspapers, including polyoxyethylene alkyl ether, polyoxyethylene polyol fat, fatty acid salt, lauryl sulfate; the deinking agent The foam quantity and foam stability are good; however, the paper pulp whiteness and residual ink are not ideal when using this deinking agent, and the products produced are of low quality

In addition, due to the continuous improvement of the types and quality of printing inks, many existing deinking agents can no longer meet the deinking requirements of various waste papers.

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