Neutral biological enzyme deinking agent and preparation method thereof

A deinking agent and bio-enzyme technology, applied in the field of papermaking, can solve the problems of poor deinking effect, easy-to-corrosion equipment, serious problems, etc., and achieve the effects of non-corrosion equipment, improved pulp whiteness, and moderate foam volume

Active Publication Date: 2012-07-04
ANHUI LEVEKING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a neutral biological enzyme deinking agent and its preparation method, which overcomes the defects of poor deinking effect, easily corroded equipment and serious pollution in existing deinking technology

Method used

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  • Neutral biological enzyme deinking agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In a 1000-liter reactor, add 600 kg of water, 20 kg of n-octyl alcohol polyoxyethylene ether (fatty alcohol polyoxyethylene ether, R=8, n=2), 80 kg of dodecyl alcohol polyoxyethylene ether, Vinyl ether (fatty alcohol polyoxyethylene ether, R=12, n=20), 100 kg of stearylic acid polyoxyethylene ether (fatty acid polyoxyethylene ether, R=17, n=10), 80 kg of polyethylene Diol 200 and 70 kg polypropylene glycol 400, under normal temperature and pressure, stir at 100 rpm for 30 minutes, mix well to form a solution, then add 50 kg of lipase to the above solution, and stir at 100 rpm for 10 minutes , the lipase is mixed evenly in the solution, and then the solution is stirred for 120 minutes at 10 rev / min to eliminate foam, after the stirring is stopped, the solution is allowed to stand to obtain a neutral biological enzyme deinking agent, and the neutral biological enzyme deinking agent It is khaki.

Embodiment 2

[0035] In a 1000-liter reactor, add 600 kg of water, 20 kg of polyoxyethylene lauryl alcohol ether (fatty alcohol polyoxyethylene ether, R=12, n=7), 80 kg of polyoxyethylene lauryl alcohol Vinyl ether (fatty alcohol polyoxyethylene ether, R=12, n=9), 100 kg of stearylic acid polyoxyethylene ether (fatty acid polyoxyethylene ether, R=17, n=20), 95 kg of polyethylene Diol 200, 5 kilograms of polyethylene glycol 8000 and 50 kilograms of polypropylene glycol 400 were stirred at 150 rpm for 30 minutes at normal temperature and pressure, and mixed evenly to form a solution, and then 50 kilograms of lipase were added to the above solution, Stir 10 minutes with 100 revs / min, lipase is mixed uniformly in the solution, then stir the solution 120 minutes with 30 revs / min again, to eliminate foam, after stopping stirring, leave standstill solution to obtain neutral biological enzyme deinking agent, The neutral biological enzyme deinking agent is khaki.

Embodiment 3

[0037] In a 1000-liter reactor, add 600 kg of water, 20 kg of n-decyl alcohol polyoxyethylene ether (fatty alcohol polyoxyethylene ether, R=10, n=2), 80 kg of stearyl polyoxyethylene Vinyl ether (fatty alcohol polyoxyethylene ether, R=18, n=20), 100 kg of polyoxyethylene lauryl ether (fatty acid polyoxyethylene ether, R=11, n=10), 80 kg of polyethylene Glycol 200, 60 kg of polypropylene glycol 400 and 10 kg of polypropylene glycol 2000, at room temperature, stirred at 100 rpm for 30 minutes, mixed evenly to form a solution, then added 50 kg of lipase to the above solution, and stirred at 100 rpm Stir for 10 minutes to mix the lipase evenly in the solution, then stir for 120 minutes at 50 rev / min to eliminate foam, after stopping stirring, let the solution stand to obtain a neutral biological enzyme deinking agent, the neutral biological enzyme deinking agent The agent is earthy yellow.

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Abstract

The invention discloses a neutral biological enzyme deinking agent and a preparation method thereof. The neutral biological enzyme deinking agent includes the following components by weight: 1% to 10% of lipase, 5% to 15% of fatty alcohol-polyoxyethylene ether, 5% to 15% of fatty acid polyoxyethylene ether, 5% to 15% of polyethylene glycol, 5% to 15% of polypropylene glycol and 30% to 79% of water. The preparation method includes sequentially adding water, the fatty alcohol-polyoxyethylene ether, the fatty acid polyoxyethylene ether, the polyethylene glycol and the polypropylene glycol into a reaction kettle, conducting stirring for 30 minutes to form solution with stirring speed as 100-150 turn / minute, adding the biological enzyme into the solution, stirring the solution for at least 10 minutes with the stirring speed as 100-150 turn / minute, and stirring the solution for at least 60 minutes with the stirring speed as 10-50 turn / minute. The neutral biological enzyme deinking agent cannot easily corrode equipment, is light in pollution and good in deinking effect.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a neutral biological enzyme deinking agent and a preparation method thereof. Background technique [0002] At present, the bottom pulp of whiteboard paper in China usually uses waste paper papermaking technology. Many paper mills have backward deinking technology for waste paper. No deinking agent is added during the pulping process. The waste paper pulp is directly used after flotation deinking, and the resulting whiteboard product The whiteness of the bottom layer is low, the amount of residual ink and resin is large, and the appearance is poor, which seriously affects the product quality. There are also some paper mills that only add sodium silicate and sodium hydroxide alkaline chemical deinking agents in the pulping process. Although it has a certain effect, it has high deinking costs, low pulp yield, high wastewater treatment costs, and Stickies are difficult to remove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04D21C5/00D21C5/02
CPCY02W30/64
Inventor 王剑英郭宏涛张清辉胡关键赖广才
Owner ANHUI LEVEKING BIOTECH CO LTD
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