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Paper mill deodorant and preparation method thereof

A deodorant, paper mill technology, applied in chemical instruments and methods, processing wastewater treatment, special treatment targets, etc. The problem is to improve the deodorization and sterilization effect, the deodorization effect is obvious, and the effect of reducing the odor emission

Pending Publication Date: 2020-02-28
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of difficulty in the treatment of malodorous gas in paper mills, difficulty in eliminating multiple odor molecules at the same time, and low deodorization efficiency, the present invention proposes a deodorant for paper mills and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1: Add 2% ethylenediaminetetraacetic acid into 51.5% water, stir with a stirrer at a speed of 400 rpm, fully dissolve, then add 0.5% of the main compound stearic acid and 2% of the second compound Compound citric acid, make it fully mix and dissolve, keep for 150 seconds. At this time, the temperature of the solution is controlled below 30° C., the rotational speed of the agitator is controlled at 60 rpm, and 25% potassium monopersulfate is added to obtain a stable potassium monopersulfate mixture A.

[0042] Step 2: Add 5% potassium bicarbonate to mixture A, control the pH at 3, then add 1% alkylphenol polyoxyethylene ether, stir for 50 seconds at the mixer speed of 400 rpm, and finally add 13% 2,2-dibromo-3-nitropropionamide, mixed uniformly to prepare mixture B, a deodorant for paper mills.

Embodiment 2

[0044] Step 1: Add 0.5% ethylenediaminetetraacetic acid into 70.9% water, stir with a stirrer at a speed of 100 rpm, fully dissolve, then add 0.1% of the main compound stearic acid and 5% of the second compound Compound malic acid, make it fully mix and dissolve, keep for 100 seconds. At this time, the temperature of the solution is controlled below 30° C., the rotational speed of the agitator is controlled at 90 rpm, and 15% potassium monopersulfate is added to obtain a stable mixture A of potassium monopersulfate.

[0045] The second step: add 3% buffering agent sodium bicarbonate to mixture A, control the pH at 4.5, then add 0.5% Tween, stir for 60 seconds at a stirrer speed of 200 rpm, and finally add 5% of 2, 2-Dibromo-3-nitropropionamide was mixed uniformly to prepare mixture B, which is a deodorant for paper mills.

Embodiment 3

[0047]Step 1: Add 0.1% ethylenediaminetetraacetic acid into 49.9% water, stir with a stirrer at a speed of 300 rpm, fully dissolve, then add 3% of the main compound stearic acid and 11% of the second compound Compound tartaric acid, make it fully mixed and dissolved, keep for 30 seconds. At this time, the temperature of the solution is controlled below 30° C., the rotational speed of the agitator is controlled at 120 rpm, and then 8% potassium monopersulfate is added to obtain a stable mixture A of potassium monopersulfate.

[0048] The second step: add 8% buffering agent (buffering agent is potassium bicarbonate, sodium bicarbonate) to mixture A, control the pH at 6.5, then add 5% alkyl polyglucoside, and the stirring speed is 800 rpm Stir for 20 seconds, and finally add 15% of 2,2-dibromo-3-nitropropionamide, and mix evenly to prepare mixture B, which is a deodorant for paper mills.

[0049] To sum up, the present invention effectively reduces the malodorous gas in the wate...

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PUM

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Abstract

The invention relates to a paper mill deodorant and a preparation method thereof. The preparation method comprises the following steps: adding ethylenediamine tetraacetic acid into water, stirring byusing a stirrer, fully dissolving, and adding a main complex stearic acid and a second complex to fully mix and dissolve; controlling the temperature of the solution, controlling the rotating speed ofthe stirrer, and adding potassium monopersulfate to prepare a stable potassium monopersulfate mixture A; and adding a buffer agent into the mixture A, controlling the pH value of the solution, addinga surfactant, stirring for a certain time, finally adding 2,2-dibromo-3-nitrilopropionamide, and uniformly mixing to obtain the deodorant. According to the invention, the stability of the deodorant is improved by adding various complexes, foul molecules are decomposed into water and carbon dioxide by utilizing oxygen free radicals, sulfuric acid free radicals and hydroxyl free radicals, the combination reaction of the deodorant and the foul molecules is promoted by utilizing the surfactant, and the propagation of microorganisms in a water body is inhibited by utilizing the sterilization disinfectant.

Description

technical field [0001] The invention belongs to the technical field of deodorant preparation, and in particular relates to a paper mill deodorant and a preparation method thereof. Background technique [0002] Malodorous gas is a kind of highly volatile gas that can stimulate people's olfactory organs and cause people's unpleasantness. It mainly comes from industrial production, garbage disposal, municipal sewage, etc. Especially in industrial production, the odor is strong, such as paper mills, dye factories, rubber factories, pharmaceutical factories, pesticide factories, plastic factories, paint factories, etc. Enterprises not only emit a large amount of malodorous gas during the production process, but also produce malodorous gas during the end-of-life treatment of waste, such as sewage and sludge treatment stages. [0003] All kinds of paper products produced in the paper industry require a large amount of water in the production process. Such a large amount of water m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50C02F1/72C02F101/30C02F103/02C02F103/28
CPCC02F1/50C02F1/722C02F2101/30C02F2103/28C02F2103/023C02F2303/04C02F2303/02
Inventor 夏新兴黄善聪马海珠王希运胡京明郭爱莲
Owner ZHEJIANG SCI-TECH UNIV
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