CN110844985A - Deodorant for paper mill and preparation method thereof - Google Patents
Deodorant for paper mill and preparation method thereof Download PDFInfo
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- CN110844985A CN110844985A CN201911110077.3A CN201911110077A CN110844985A CN 110844985 A CN110844985 A CN 110844985A CN 201911110077 A CN201911110077 A CN 201911110077A CN 110844985 A CN110844985 A CN 110844985A
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- 239000002781 deodorant agent Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000012425 OXONE® Substances 0.000 claims abstract description 18
- HJKYXKSLRZKNSI-UHFFFAOYSA-I pentapotassium;hydrogen sulfate;oxido sulfate;sulfuric acid Chemical compound [K+].[K+].[K+].[K+].[K+].OS([O-])(=O)=O.[O-]S([O-])(=O)=O.OS(=O)(=O)O[O-].OS(=O)(=O)O[O-] HJKYXKSLRZKNSI-UHFFFAOYSA-I 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 9
- UUIVKBHZENILKB-UHFFFAOYSA-N 2,2-dibromo-2-cyanoacetamide Chemical compound NC(=O)C(Br)(Br)C#N UUIVKBHZENILKB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- 239000006172 buffering agent Substances 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000000844 anti-bacterial effect Effects 0.000 claims description 7
- 239000003899 bactericide agent Substances 0.000 claims description 7
- 239000000872 buffer Substances 0.000 claims description 6
- 239000002736 nonionic surfactant Substances 0.000 claims description 6
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 6
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 6
- 239000011736 potassium bicarbonate Substances 0.000 claims description 6
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical group [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 239000001630 malic acid Substances 0.000 claims description 4
- 235000011090 malic acid Nutrition 0.000 claims description 4
- -1 polyoxyethylene Polymers 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 3
- 229920000053 polysorbate 80 Polymers 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000000645 desinfectant Substances 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 238000004332 deodorization Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000003381 solubilizing effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 244000286663 Ficus elastica Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000013048 microbiological method Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical class [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 1
- 229910000343 potassium bisulfate Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical class [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Chemical class 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to a deodorant for a paper mill and a preparation method thereof. The preparation method comprises the steps of firstly adding the ethylenediamine tetraacetic acid into water, stirring by using a stirrer, fully dissolving, and then adding the main compound stearic acid and the second compound, fully mixing and dissolving. Controlling the temperature of the solution, controlling the rotating speed of the stirrer, and adding potassium monopersulfate to prepare a stable potassium monopersulfate mixture A. And then adding a buffering agent into the mixture A, controlling the pH value of the solution, adding a surfactant, stirring for a period of time, finally adding 2, 2-dibromo-3-nitrilopropionamide, and uniformly mixing to obtain the deodorant. The deodorant disclosed by the invention has the advantages that the stability of the deodorant is improved by adding various compounds, malodorous molecules are decomposed by using oxygen radicals, sulfuric acid radicals and hydroxyl radicals to be converted into water and carbon dioxide, the combined reaction of the deodorant and the malodorous molecules is promoted by using a surfactant, and the propagation of water microorganisms is inhibited by using a sterilizing disinfectant.
Description
Technical Field
The invention belongs to the technical field of preparation of deodorizers, and particularly relates to a deodorizer for a paper mill and a preparation method thereof.
Background
Malodorous gas is a gas which has strong volatility and can stimulate olfactory organs of people to cause people to be unpleasant, and mainly comes from industrial production, garbage treatment, municipal sewage and the like. Especially in industrial production, such as paper mill, dye plant, rubber plant, pharmaceutical plant, pesticide plant, plastic plant, paint plant, etc. Enterprises not only discharge a large amount of malodorous gases in the production process, but also can generate malodorous gases in the treatment of waste ends, such as sewage and sludge treatment stages.
The production process of various paper products produced in the paper making industry needs to use a large amount of water, and the large amount of water needs to adopt closed circulation, so that zero emission is realized. The repeated recycling of the paper mill sewage inevitably causes the fermentation of various organic matters, the breeding of various microorganisms and the accumulation of various chemicals, thereby causing the deterioration and the odor of water quality and finally influencing the product quality.
At present, three methods are used for treating the odor, namely a physical method, a chemical method and a biological method. The physical method mainly depends on adsorption deodorization, the activated carbon is one of the most traditional and mature adsorbents at present, the method is usually used by matching with an adsorption tower, the method has higher efficiency, but large-scale equipment is needed, the activated carbon adsorption is easy to reach saturation, the activated carbon needs to be regenerated or replaced, the manufacturing cost is high, the service life is short, and therefore the method is suitable for treating low-concentration odor. The chemical method mainly depends on the direct reaction of chemical reagents and malodorous gas or water body to eliminate the malodorous gas, and can radically eliminate the production of the malodorous gas, the deodorization efficiency is high, special equipment is not needed, but the production of byproducts is controlled in the actual use process. The biological deodorization method converts substances with odor through the physiological metabolism of microorganisms to achieve the aim of deodorization. The microbiological method has the characteristics of simple equipment, less secondary pollution and the like, but is only suitable for treating low-concentration gas and is easily influenced by temperature, pH value and the like.
The invention provides a paper mill deodorant and a preparation method thereof, and aims to solve the problems of low efficiency, poor deodorization effect, fast generation of malodorous molecules and the like of the existing paper mill malodorous gas removal.
Disclosure of Invention
The invention provides a deodorant for a paper mill and a preparation method thereof, aiming at the problems that malodorous gas in the paper mill is difficult to treat, various odor molecules are difficult to eliminate simultaneously, the deodorization efficiency is low and the like.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a paper mill deodorant comprising the following components:
0.1 to 3 percent of ethylenediamine tetraacetic acid;
40% -80% of water;
0.1% -5% of the first compound;
1% -12% of a second compound;
8% -30% of potassium monopersulfate;
2% -8% of a buffering agent;
0.1 to 6 percent of surfactant;
2% -15% of a bactericide;
the above are all mass percentages.
Furthermore, the first compound is stearic acid, and the second compound is citric acid, malic acid or tartaric acid.
Further, the buffer is potassium bicarbonate, sodium bicarbonate or a mixture of the two.
Furthermore, the surfactant is a nonionic surfactant.
Furthermore, the nonionic surfactant is one or more of alkylphenol polyoxyethylene, tween 80 or alkyl polyglucoside.
Furthermore, the bactericide is 2, 2-dibromo-3-nitrilopropionamide.
The preparation method of the deodorant comprises the following specific steps:
adding 0.1-3% of ethylenediamine tetraacetic acid into 40-80% of water, stirring by using a stirrer, and controlling the rotating speed at 100-500 rpm to fully dissolve.
Adding 0.1-5% of the first compound and 1-12% of the second compound, fully mixing and dissolving, and keeping for 30-150 seconds; at the moment, the temperature of the solution is controlled below 30 ℃, the rotating speed of a stirrer is controlled at 60-120 r/min, and 8% -30% of potassium monopersulfate is added to prepare a stable potassium monopersulfate mixture A.
Adding 2-8% of buffering agent into the mixture A, controlling the pH value to be 3-6.5, then adding 0.1-6% of surfactant, and stirring for 20-60 seconds at the rotating speed of the stirrer of 200-800 rpm.
Adding 2-15% of bactericide, and mixing uniformly to obtain a mixture B, namely the paper mill deodorant.
The invention has the beneficial effects that:
1. the deodorant for the paper mill uses green and environment-friendly raw materials, is simple in preparation process, novel in formula, obvious in deodorization effect in the using process, especially suitable for being added in a papermaking water circulation system, and long in deodorization action time.
2. The invention improves the stability of the deodorant by adding a plurality of compounds and reduces the influence of various impurities on the deodorization effect.
3. The invention can provide a large amount of sulfuric acid free radicals (SO) and hydroxyl free radicals (HO) to decompose refractory organic matters, decompose malodorous molecules into water and carbon dioxide, and provide long-time deodorization effect.
4. The added nonionic surfactant can play a role in solubilizing the malodorous molecules in the air, promote the combined reaction of the deodorant and the malodorous molecules, further weaken the emission of the malodorous smell of the water body and provide a protection effect.
5. The deodorant of the invention is added with the sterilization and disinfection components, effectively inhibits the propagation of water microorganisms, weakens the odor generated by the microorganisms due to metabolism, reacts organic matters in the water, reduces the nutrients of the microorganisms, and eliminates the generation of odor molecules from the source.
6. The addition of various buffering agents and compounds in the deodorant can play an auxiliary role and enhance the deodorization effect of the deodorant in a paper mill, so that the stability and the deodorization and sterilization effects of the liquid deodorant are effectively improved.
7. The product of the invention has better chemical stability, good use effect and lasting effect, and has wide application prospect in the field of malodorous gas treatment of paper mills.
Detailed Description
The principle of the method of the invention is as follows: in the present invention, potassium monopersulfate exists as a complex salt, which is three salts of potassium monopersulfate, potassium hydrogensulfate and potassium sulfate. It can release active oxygen [ O ] in water]Generating oxygen radicals, hydroxyl radicals (. OH) and sulfuric radicals (SO)4 −That can not only provide oxygen to increase dissolved oxygen in water, but also react with malodorous molecules in water to oxidize the malodorous molecules into odorless stable molecules, such as removing phenols and formaldehyde, and reacting with sulfur-containing and nitrogen-containing compounds to generate odorless compounds; meanwhile, the disinfectant is an efficient oxidation disinfectant, and has the effect of widely killing microorganisms, including bacteria, spores, viruses, fungi and the like. The complexing agent is present to enhance the chemical stability of the deodorant. The surfactant can form a surface active film on the surface of the aqueous solution, has a solubilizing effect on VOCs (volatile organic compounds) to absorb gaseous organic matters, and enhances the diffusion capacity of gas in the solution, such as toluene. The buffering agent plays a role in buffering in the deodorant and is also an acidity regulator. The 2, 2-dibromo-3-nitrilopropionamide is added to control microorganisms in a water body, is used as a bactericide to prevent bacteria and algae from growing and propagating, is particularly suitable to be added into circulating cooling water in paper making and industry, and eliminates the generation of malodorous gas from the root. The deodorant for the paper mill has a good elimination effect on the odor by utilizing the coordination of various compounds.
The technical scheme of the invention is as follows:
the following components are calculated by mass percentage. Firstly, 0.1 to 3 percent of ethylenediamine tetraacetic acid is added into 40 to 80 percent of water, stirred by a stirrer, the rotating speed is controlled at 100 revolutions per minute and 500 revolutions per minute, and fully dissolved, and then 0.1 to 5 percent of stearic acid as a main compound and 1 to 12 percent of a second compound (the second compound is citric acid, malic acid or tartaric acid) are added, fully mixed and dissolved, and the mixture is kept for 30 to 150 seconds. At the moment, the temperature of the solution is controlled below 30 ℃, the rotating speed of a stirrer is controlled at 60-120 r/min, and 8% -30% of potassium monopersulfate is added to prepare a stable potassium monopersulfate mixture A.
Then, adding 2-8% of buffer (the buffer is potassium bicarbonate and sodium bicarbonate), controlling the pH value between 3-6.5, adding 0.1-6% of surfactant (the surfactant is nonionic surfactant alkylphenol polyoxyethylene, tween 80 or alkyl polyglucoside), stirring for 20-60 seconds at the rotating speed of 200-800 r/min of a stirrer, finally adding 2-15% of 2, 2-dibromo-3-nitrilopropionamide, and uniformly mixing to obtain a mixture B, namely the deodorant for the paper mill.
Example 1
The first step is as follows: adding 2% of ethylenediamine tetraacetic acid into 51.5% of water, stirring by using a stirrer, controlling the rotating speed at 400 revolutions per minute, fully dissolving, adding 0.5% of stearic acid serving as a main compound and 2% of citric acid serving as a second compound, fully mixing and dissolving, and keeping for 150 seconds. At the moment, the temperature of the solution is controlled below 30 ℃, the rotating speed of a stirrer is controlled at 60 revolutions per minute, and 25 percent of potassium monopersulfate is added to prepare a stable potassium monopersulfate mixture A.
The second step is that: and adding 5% of potassium bicarbonate into the mixture A, controlling the pH value to be 3, adding 1% of alkylphenol polyoxyethylene, stirring for 50 seconds at the rotating speed of a stirrer of 400 revolutions per minute, finally adding 13% of 2, 2-dibromo-3-nitrilopropionamide, and uniformly mixing to obtain a mixture B, namely the deodorant for the paper mill.
Example 2
The first step is as follows: adding 0.5% of ethylenediamine tetraacetic acid into 70.9% of water, stirring by using a stirrer, controlling the rotating speed at 100 revolutions per minute, fully dissolving, adding 0.1% of stearic acid serving as a main compound and 5% of malic acid serving as a second compound, fully mixing and dissolving, and keeping for 100 seconds. At the moment, the temperature of the solution is controlled below 30 ℃, the rotating speed of a stirrer is controlled at 90 revolutions per minute, and then 15 percent of potassium monopersulfate is added to prepare a stable potassium monopersulfate mixture A.
The second step is that: adding 3% of buffer sodium bicarbonate into the mixture A, controlling the pH value to be 4.5, adding 0.5% of tween, stirring for 60 seconds at the rotating speed of a stirrer of 200 revolutions per minute, finally adding 5% of 2, 2-dibromo-3-nitrilopropionamide, and uniformly mixing to obtain a mixture B, namely the deodorant for the paper mill.
Example 3
The first step is as follows: adding 0.1% of ethylenediamine tetraacetic acid into 49.9% of water, stirring by using a stirrer, controlling the rotating speed at 300 revolutions per minute, fully dissolving, adding 3% of stearic acid serving as a main compound and 11% of tartaric acid serving as a second compound, fully mixing and dissolving, and keeping for 30 seconds. At the moment, the temperature of the solution is controlled below 30 ℃, the rotating speed of a stirrer is controlled at 120 revolutions per minute, and 8 percent of potassium monopersulfate is added to prepare a stable potassium monopersulfate mixture A.
The second step is that: adding 8% buffer (potassium bicarbonate or sodium bicarbonate) into the mixture A, controlling pH at 6.5, adding 5% alkyl polyglucoside, stirring at 800 rpm for 20 s, adding 15% 2, 2-dibromo-3-nitrilopropionamide, and mixing to obtain mixture B.
In conclusion, the invention effectively reduces the malodorous gas in the water body and the air, improves the deodorization efficiency, prolongs the deodorization action time, simultaneously can reduce the microorganisms in the water body and really achieves the purpose of controlling the malodorous smell from the source through the chemical reaction and physical combination of various compounds. The preparation method is simple, has good deodorization effect, and is suitable for treating malodorous gas in paper mills.
Claims (7)
1. A deodorant for a paper mill is characterized in that: comprises the following components:
0.1 to 3 percent of ethylenediamine tetraacetic acid;
40% -80% of water;
0.1% -5% of the first compound;
1% -12% of a second compound;
8% -30% of potassium monopersulfate;
2% -8% of a buffering agent;
0.1 to 6 percent of surfactant;
2% -15% of a bactericide;
the above are all mass percentages.
2. A paper mill deodorant according to claim 1, wherein: the first compound is stearic acid, and the second compound is citric acid, malic acid or tartaric acid.
3. A paper mill deodorant according to claim 1, wherein: the buffer is potassium bicarbonate, sodium bicarbonate or a mixture of the potassium bicarbonate and the sodium bicarbonate.
4. A paper mill deodorant according to claim 1, wherein: the surfactant is a nonionic surfactant.
5. The deodorant for paper mill according to claim 4, wherein: the nonionic surfactant is one or more of alkylphenol polyoxyethylene, tween 80 or alkyl polyglucoside.
6. A paper mill deodorant according to claim 1, wherein: the bactericide is 2, 2-dibromo-3-nitrilopropionamide.
7. A method of preparing the deodorant of claim 1, characterized by:
adding 0.1-3% of ethylenediamine tetraacetic acid into 40-80% of water, stirring by using a stirrer, controlling the rotating speed at 100-;
adding 0.1-5% of the first compound and 1-12% of the second compound, fully mixing and dissolving, and keeping for 30-150 seconds; controlling the temperature of the solution below 30 ℃, controlling the rotating speed of a stirrer at 60-120 r/min, and then adding 8% -30% of potassium monopersulfate to prepare a stable potassium monopersulfate mixture A;
adding 2-8% of buffering agent into the mixture A, controlling the pH value to be 3-6.5, adding 0.1-6% of surfactant, and stirring for 20-60 seconds at the rotating speed of the stirrer of 200-;
adding 2-15% of bactericide, and mixing uniformly to obtain a mixture B, namely the paper mill deodorant.
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