CN111218218B - Method for producing shoe polish by using wastewater from gallic acid production - Google Patents
Method for producing shoe polish by using wastewater from gallic acid production Download PDFInfo
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- CN111218218B CN111218218B CN201911239977.8A CN201911239977A CN111218218B CN 111218218 B CN111218218 B CN 111218218B CN 201911239977 A CN201911239977 A CN 201911239977A CN 111218218 B CN111218218 B CN 111218218B
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- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000002351 wastewater Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 235000004515 gallic acid Nutrition 0.000 title claims abstract description 29
- 229940074391 gallic acid Drugs 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 239000000706 filtrate Substances 0.000 claims abstract description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000012188 paraffin wax Substances 0.000 claims abstract description 23
- 239000011259 mixed solution Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 18
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 18
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 16
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 14
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 11
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 11
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 11
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 150000002191 fatty alcohols Chemical class 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims 2
- 239000010985 leather Substances 0.000 abstract description 16
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000000975 dye Substances 0.000 description 29
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 8
- 239000001263 FEMA 3042 Substances 0.000 description 8
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 8
- LRBQNJMCXXYXIU-QWKBTXIPSA-N gallotannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@H]2[C@@H]([C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-QWKBTXIPSA-N 0.000 description 8
- 235000015523 tannic acid Nutrition 0.000 description 8
- 229920002258 tannic acid Polymers 0.000 description 8
- 229940033123 tannic acid Drugs 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000012452 mother liquor Substances 0.000 description 6
- 235000017399 Caesalpinia tinctoria Nutrition 0.000 description 5
- 241000388430 Tara Species 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920001800 Shellac Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/06—Other polishing compositions
- C09G1/08—Other polishing compositions based on wax
- C09G1/10—Other polishing compositions based on wax based on mixtures of wax and natural or synthetic resin
- C09G1/12—Other polishing compositions based on wax based on mixtures of wax and natural or synthetic resin mixtures of wax and silicon-containing polycondensates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0083—Solutions of dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Detergent Compositions (AREA)
Abstract
The application discloses a method for producing shoe polish by using wastewater generated in gallic acid production, which comprises the following steps: adding calcium hydroxide suspension into wastewater from gallic acid production, mixing, standing, and filtering to obtain filtrate; adding a hydrogen peroxide solution into ferrous sulfate under stirring to react to generate a mixed solution; adding the filtrate into the mixed solution, uniformly mixing the filtrate and the mixed solution for the second time, and standing the mixture for the second time to obtain the water-based dye; mixing paraffin and paraffin emulsifier to form a mixture, heating to 80-85 ℃, adding the mixture into the water-based dye, adding dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate and oil-soluble black, optionally adding essence, mixing uniformly for the third time, and cooling to obtain the shoe polish. The method provided by the application has the advantages of simple process and short production period, and can be used for preparing the wastewater for producing the gallic acid into the shoe polish, so that waste is changed into valuable; the prepared shoe polish has good finishing gloss, can effectively prevent leather from aging, can prevent mildew and sterilize, and enables leather shoes to be permanently bright.
Description
Technical Field
The application relates to the technical field of daily chemical product production, in particular to a method for producing shoe polish by using wastewater generated in gallic acid production.
Background
The shoe polish is a protective agent and a glazing agent which are painted on the surfaces of leather shoes or leather, has the functions of preventing water, protecting the leather, enhancing the surface gloss of the leather and complementing color, and is commonly used in daily life.
Shoe polish can be broadly classified into emulsion type, oil type and liquid type. The emulsion type shoe polish is the most common shoe polish in the market at present and the most used shoe polish for people, and is particularly suitable for humid and rainy areas. The emulsion type shoe polish mainly comprises wax, water and shellac oil, and is classified into oil-in-water type and water-in-oil type, with the oil-in-water type being more common. Oil type shoe polish is mainly composed of wax and oil, and contains no water. Therefore, the leather has better water resistance than the emulsion type shoe polish, but the leather color is lightened if the oil type shoe polish is used for a long time. The liquid type shoe polish is made of emulsified wax and water, and does not need to be wiped. The leather can be brightened only by coating the liquid type shoe polish on leather shoes, but the brightness of the liquid type shoe polish is not high, and the adhesiveness is poor.
The gallic acid extracted from gallnut and tara powder can generate a large amount of mother liquor containing tannic acid and gallic acid, the mother liquor can only be used for treating wastewater generally, and because the COD concentration in the mother liquor is higher, the tannic acid and the gallic acid have the bactericidal effect, so that the cost for treating the wastewater is very high. The construction of a sewage treatment plant for treating 25 tons of mother liquor per day requires 1000 ten thousand investment and also requires 120-150 ten thousand operation cost each year. In order to improve the efficiency of enterprises and develop green chemistry, the treatment cost of mother liquor needs to be reduced or the mother liquor needs to be recycled to change waste into valuable.
Disclosure of Invention
In order to solve the above technical problems, a first object of the present invention is to provide a method for producing shoe polish using wastewater from gallic acid production; the method provided by the application has the advantages of simple process and short production period, and can be used for preparing the wastewater for producing the gallic acid into the shoe polish, so that waste is changed into valuable; the prepared shoe polish has good finishing gloss, can effectively prevent leather from aging, can prevent mildew and sterilize, and enables leather shoes to be permanently bright.
The technical scheme provided by the invention is as follows:
a method for producing shoe polish by using wastewater generated in the production of gallic acid comprises the following steps:
adding calcium hydroxide suspension into wastewater from gallic acid production, mixing, standing, and filtering to obtain filtrate;
adding a hydrogen peroxide solution into ferrous sulfate under stirring to react to generate a mixed solution;
adding the filtrate into the mixed solution, uniformly mixing the filtrate and the mixed solution for the second time, and standing the mixture for the second time to obtain the water-based dye;
mixing paraffin and paraffin emulsifier to form a mixture, heating to 80-85 ℃, adding the mixture into the water-based dye, adding dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate and oil-soluble black, optionally adding essence, mixing uniformly for the third time, and cooling to obtain the shoe polish.
Preferably, the amount of calcium hydroxide is 6.5-7.5kg per 100kg of wastewater.
Preferably, the first standing time is 2-5 h; and/or the presence of a gas in the gas,
the filtration comprises rough filtration and fine filtration, wherein a screen with 350 meshes and 400 meshes is used for the rough filtration, and a polymer filter membrane with the diameter of 1-1.5 mu m is used for the fine filtration.
Preferably, the screen is filter cloth, and the polymer filter membrane is PP cotton.
Preferably, the mass percentage concentration of the hydrogen peroxide solution is 30-35%, and the usage ratio of the ferrous sulfate to the hydrogen peroxide solution is as follows: using 18-25kg of hydrogen peroxide solution for 7.5-10.5kg of ferrous sulfate, and reacting to generate mixed liquor.
Preferably, the dosage ratio of the filtrate to the mixed solution is: 7.5-10.5kg of ferrous sulfate and 18-25kg of hydrogen peroxide solution, and adding 150-155L of the filtrate.
Preferably, the time of the second standing is 10-15 min.
Preferably, the paraffin wax is specifically No. 58 paraffin wax, and the paraffin wax emulsifier is specifically N-methylpyrrolidone.
Preferably, the amounts of each substance used are: the volume ratio of the mixture to the water-based dye is 1:1-1.5, the dosage of the dimethyl silicone oil is 10-12% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the fatty alcohol polyoxyethylene ether sodium sulfate is 0.8-4% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the oil-soluble black is 2-4% of the total amount of the mixture and the water-based dye in percentage by weight, and the dosage of the essence is 1-3% of the total amount of the mixture and the water-based dye in percentage by weight.
Preferably, the method also comprises the steps of filling, packaging and packaging the shoe polish to obtain a finished product.
The applicant detects the wastewater generated in the production of gallic acid from gallnut or tara powder, and finds that the main components of the wastewater comprise, by mass: 0.8-1.1% of glucose, 8-11% of sodium chloride, 0.4-1.0% of tannic acid, 0.5-1.3% of gallic acid, 0.4-0.6% of tannic acid, 1.3-1.6% of hydrochloric acid and the balance of water. The applicant researches and discovers that gallic acid, tannic acid and other components contained in the wastewater are suitable for manufacturing water-based dyes, and the water-based dyes can be compounded with paraffin, a paraffin emulsifier, dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate, oil-soluble black and other components to prepare shoe polish. In order to meet the requirements of consumers, essence can also be added to provide aromatic odor.
The method provided by the application has the advantages of simple process and short production period, can prepare the wastewater for producing the gallic acid into the shoe polish, changes waste into valuable, is beneficial to the treatment of the wastewater, and can greatly reduce the price of raw materials for preparing the shoe polish and reduce the cost; the prepared shoe polish is non-toxic, free of peculiar smell, safe, environment-friendly and good in polishing degree, can effectively prevent leather from aging, and the contained raw materials can also play a role in mildew prevention and sterilization, so that the leather shoes are lasting and beautiful.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiments of the present application are written in a progressive manner.
The embodiment of the invention provides a method for producing shoe polish by using wastewater generated in the production of gallic acid, which comprises the following steps:
adding calcium hydroxide suspension into wastewater from gallic acid production, mixing, standing, and filtering to obtain filtrate;
adding a hydrogen peroxide solution into ferrous sulfate under stirring to react to generate a mixed solution;
adding the filtrate into the mixed solution, uniformly mixing the filtrate and the mixed solution for the second time, and standing the mixture for the second time to obtain the water-based dye;
mixing paraffin and paraffin emulsifier to form a mixture, heating to 80-85 ℃, adding the mixture into the water-based dye, adding dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate and oil-soluble black, optionally adding essence, mixing uniformly for the third time, and cooling to obtain the shoe polish.
The applicant detects the wastewater generated in the production of gallic acid from gallnut or tara powder, and finds that the main components of the wastewater comprise, by mass: 0.8-1.1% of glucose, 8-11% of sodium chloride, 0.4-1.0% of tannic acid, 0.5-1.3% of gallic acid, 0.4-0.6% of tannic acid, 1.3-1.6% of hydrochloric acid and the balance of water. The applicant researches and discovers that gallic acid, tannic acid and other components contained in the wastewater are suitable for manufacturing water-based dyes, and the water-based dyes can be compounded with paraffin, a paraffin emulsifier, dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate, oil-soluble black and other components to prepare shoe polish. In order to meet the requirements of consumers, essence can also be added to provide aromatic odor.
The method provided by the application has the advantages of simple process and short production period, can prepare the wastewater for producing the gallic acid into the shoe polish, changes waste into valuable, is beneficial to the treatment of the wastewater, and can greatly reduce the price of raw materials for preparing the shoe polish and reduce the cost; the prepared shoe polish is non-toxic, free of peculiar smell, safe, environment-friendly and good in polishing degree, can effectively prevent leather from aging, and the contained raw materials can also play a role in mildew prevention and sterilization, so that the leather shoes are lasting and beautiful.
Preferably, the amount of calcium hydroxide is 6.5-7.5kg per 100kg of wastewater.
The calcium hydroxide suspension is used, and the weight ratio of the calcium hydroxide solid to the wastewater is controlled, so that the acidic components in the wastewater can be effectively neutralized, and the using amount of the calcium hydroxide is saved.
Preferably, the first standing time is 2-5 h; and/or the presence of a gas in the gas,
the filtration comprises rough filtration and fine filtration, wherein a screen with 350 meshes and 400 meshes is used for the rough filtration, and a polymer filter membrane with the diameter of 1-1.5 mu m is used for the fine filtration.
Preferably, the screen is filter cloth, and the polymer filter membrane is PP cotton.
The liquid after the reaction with the calcium hydroxide is kept stand, preferably for 2 to 5 hours, more preferably for 2 to 3 hours, so that solid matters can be precipitated, and the filtering operation is facilitated. The filtration is preferably carried out sequentially by coarse filtration and fine filtration, wherein the coarse filtration uses a 400-mesh screen with 350 meshes and preferably uses a 300-mesh filter cloth to filter larger particles in the liquid, the filtrate after the coarse filtration is further subjected to fine filtration, and the fine filtration uses a 1-1.5 mu m high molecular filter membrane, preferably PP cotton, for example, a 1 mu m PP cotton filter.
Preferably, the mass percentage concentration of the hydrogen peroxide solution is 30-35%, and the usage ratio of the ferrous sulfate to the hydrogen peroxide solution is as follows: using 18-25kg of hydrogen peroxide solution for 7.5-10.5kg of ferrous sulfate, and reacting to generate mixed liquor.
Preferably, the dosage ratio of the filtrate to the mixed solution is: 7.5-10.5kg of ferrous sulfate and 18-25kg of hydrogen peroxide solution, and adding 150-155L of the filtrate.
Preferably, the time of the second standing is 10-15 min.
The applicant finds that the mixed solution generated by adding the ferrous sulfate into the hydrogen peroxide solution for reaction can form the water-based dye with darker color after reacting with the filtrate, and other dye components are not required to be additionally added. And due to the existence of hydrogen peroxide, the generated aqueous dye is thick and does not contain precipitate, and the subsequent use is not influenced. The hydrogen peroxide solution is preferably used in a concentration of 30 to 35% by mass, more preferably 30 to 32% by mass, and the solid ferrous sulfate is oxidized and dissolved by the heat generated by the reaction of the hydrogen peroxide and the ferrous sulfate. And adding the filtrate into the mixed solution while the solution is hot, preferably stirring and adding the filtrate, uniformly mixing the filtrate and the mixed solution for the second time (uniformly stirring), and standing the mixture for 10 to 15min, preferably standing the mixture for 10 to 15min to obtain the bluish black water-based dye.
The water-based dye is blue black, and oil soluble black is added in the later period, so that the shoe polish prepared by the method provided by the application is black shoe polish.
Preferably, the paraffin wax is specifically No. 58 paraffin wax, and the paraffin wax emulsifier is specifically N-methylpyrrolidone.
Preferably, the amounts of each substance used are: the volume ratio of the mixture to the water-based dye is 1:1-1.5, the dosage of the dimethyl silicone oil is 10-12% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the fatty alcohol polyoxyethylene ether sodium sulfate is 0.8-4% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the oil-soluble black is 2-4% of the total amount of the mixture and the water-based dye in percentage by weight, and the dosage of the essence is 1-3% of the total amount of the mixture and the water-based dye in percentage by weight.
The shoe polish is preferably prepared according to the specific substance types and the dosage. The prepared shoe polish has good use effect and effectively treats wastewater.
Preferably, the method also comprises the steps of filling, packaging and packaging the shoe polish to obtain a finished product.
The finished shoe polish is preferably filled, more preferably into aluminum tubes, then packaged (preferably using a shoe polish tail sealer), and filled into cartons for sale to produce finished products.
Example 1
A method for producing shoe polish by using wastewater generated in the production of gallic acid comprises the following steps:
adding calcium hydroxide suspension to neutralize wastewater from Galla chinensis or Tara powder production of gallic acid, adding 6.5kg calcium hydroxide per 100kg wastewater, stirring, standing for more than 2 hr, sequentially performing coarse filtration and fine filtration, wherein the coarse filtration uses 300 mesh filter cloth, and the fine filtration uses 1 μm PP cotton filter to obtain filtrate;
adding 18kg of hydrogen peroxide solution with the mass percentage concentration of 30% into 7.5kg of ferrous sulfate under stirring, and reacting to generate mixed solution;
adding 150L of filtrate into the mixed solution, stirring and adding, and standing for 10min to obtain a water-based dye;
mixing 58# paraffin and N-methyl pyrrolidone according to a mass ratio of 7:3 to form a mixture, heating to 80 ℃, adding the mixture into a water-based dye with a volume ratio of 1:1 to the mixture, adding dimethyl silicone oil according to 10% of the total weight of the mixture and the water-based dye, adding fatty alcohol-polyoxyethylene ether sodium sulfate (AES) according to 1% of the total weight, adding oil-soluble black according to 2% of the total weight, adding essence according to 1% of the total weight, stirring uniformly, and cooling to obtain the shoe polish.
And filling the prepared shoe polish into an aluminum pipe, packaging by using a shoe polish tail sealing machine, and filling into a packaging paper box to obtain a finished product for sale. The finished product can be packaged into a plurality of pieces for sale.
Example 2
A method for producing shoe polish by using wastewater generated in the production of gallic acid comprises the following steps:
adding calcium hydroxide suspension to neutralize wastewater from Galla chinensis or Tara powder production of gallic acid, adding 7.5kg calcium hydroxide per 100kg wastewater, stirring, standing for more than 2 hr, sequentially performing coarse filtration and fine filtration, wherein the coarse filtration uses 300 mesh filter cloth, and the fine filtration uses 1 μm PP cotton filter to obtain filtrate;
adding 25kg of hydrogen peroxide solution with the mass percentage concentration of 30% into 10.5kg of ferrous sulfate under stirring, and reacting to generate mixed solution;
adding 150L of filtrate into the mixed solution, stirring and adding, and standing for 10min to obtain a water-based dye;
mixing 58# paraffin and N-methyl pyrrolidone according to a mass ratio of 7:3 to form a mixture, heating to 80 ℃, adding the mixture into a water-based dye with a volume ratio of 1:1 to the mixture, adding dimethyl silicone oil according to 10% of the total weight of the mixture and the water-based dye, adding fatty alcohol-polyoxyethylene ether sodium sulfate (AES) according to 3% of the total weight, adding oil-soluble black according to 4% of the total weight, adding essence according to 2% of the total weight, stirring uniformly, and cooling to obtain the shoe polish.
And filling the prepared shoe polish into an aluminum pipe, packaging by using a shoe polish tail sealing machine, and filling into a packaging paper box to obtain a finished product for sale. The finished product can be packaged into a plurality of pieces for sale.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for producing shoe polish by using wastewater generated in the production of gallic acid is characterized by comprising the following steps:
adding calcium hydroxide suspension into wastewater from gallic acid production, mixing, standing, and filtering to obtain filtrate; the dosage of the calcium hydroxide is 6.5-7.5kg of calcium hydroxide added into every 100kg of wastewater;
adding a hydrogen peroxide solution into ferrous sulfate under stirring, and reacting to generate a mixed solution, wherein the mass percentage concentration of the hydrogen peroxide solution is 30-35%, and the dosage ratio of the ferrous sulfate to the hydrogen peroxide solution is as follows: using 18-25kg of hydrogen peroxide solution for 7.5-10.5kg of ferrous sulfate;
adding the filtrate into the mixed solution, uniformly mixing the filtrate and the mixed solution for the second time, and standing the mixture for the second time to obtain the water-based dye;
mixing paraffin and paraffin emulsifier to form a mixture, heating to 80-85 ℃, adding the mixture into the water-based dye, adding dimethyl silicone oil, fatty alcohol-polyoxyethylene ether sodium sulfate and oil-soluble black, optionally adding essence, mixing uniformly for the third time, and cooling to obtain the shoe polish.
2. The method according to claim 1, wherein the first resting time is 2-5 h; and/or the presence of a gas in the gas,
the filtration comprises rough filtration and fine filtration, wherein a screen with 350 meshes and 400 meshes is used for the rough filtration, and a polymer filter membrane with the diameter of 1-1.5 mu m is used for the fine filtration.
3. The method according to claim 2, wherein the screen is in particular a filter cloth and the polymeric filter membrane is in particular PP cotton.
4. The method of claim 1, wherein the ratio of the amount of the filtrate to the amount of the mixed solution is: 7.5-10.5kg of ferrous sulfate and 18-25kg of hydrogen peroxide solution, and adding 150-155L of the filtrate.
5. The method of claim 1, wherein the second resting time is 10-15 min.
6. The method according to claim 1, wherein the paraffin wax is in particular paraffin wax # 58 and the paraffin wax emulsifier is in particular N-methylpyrrolidone.
7. The method of claim 1, wherein the amounts of each are: the volume ratio of the mixture to the water-based dye is 1:1-1.5, the dosage of the dimethyl silicone oil is 10-12% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the fatty alcohol polyoxyethylene ether sodium sulfate is 0.8-4% of the total amount of the mixture and the water-based dye in percentage by weight, the dosage of the oil-soluble black is 2-4% of the total amount of the mixture and the water-based dye in percentage by weight, and the dosage of the essence is 1-3% of the total amount of the mixture and the water-based dye in percentage by weight.
8. The method of claim 1, further comprising the steps of filling, packaging, and packaging the shoe polish to form a finished product.
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| CN102888194A (en) * | 2012-09-20 | 2013-01-23 | 吴江市天源塑胶有限公司 | High-durability floor wax |
| CN103992745A (en) * | 2014-05-16 | 2014-08-20 | 临沂大学 | Liquid shoe polish prepared by ginkgo leaf ketone extracted paste residual wastes and preparation method thereof |
| CN104692467A (en) * | 2015-02-13 | 2015-06-10 | 北京三聚环保新材料股份有限公司 | Preparation method of polyferric sulfate |
| CN109370443A (en) * | 2018-12-12 | 2019-02-22 | 郑希晨 | A kind of shoe polish and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE633916C (en) * | 1931-08-07 | 1936-08-12 | I G Farbenindustrie Akt Ges | Impregnation, finishing, polishing and cleaning agents |
| CN103571340A (en) * | 2012-07-31 | 2014-02-12 | 西安佳迅科技有限公司 | Preparation method of color emulsion type shoe polish |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888194A (en) * | 2012-09-20 | 2013-01-23 | 吴江市天源塑胶有限公司 | High-durability floor wax |
| CN103992745A (en) * | 2014-05-16 | 2014-08-20 | 临沂大学 | Liquid shoe polish prepared by ginkgo leaf ketone extracted paste residual wastes and preparation method thereof |
| CN104692467A (en) * | 2015-02-13 | 2015-06-10 | 北京三聚环保新材料股份有限公司 | Preparation method of polyferric sulfate |
| CN109370443A (en) * | 2018-12-12 | 2019-02-22 | 郑希晨 | A kind of shoe polish and preparation method thereof |
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Effective date of registration: 20211222 Address after: 418000 Xingye Road Industrial Park, Mayang Miao Autonomous County, Huaihua City, Hunan Province Applicant after: HUNAN LINONG GALLNUT INDUSTRY DEVELOPMENT CO.,LTD. Address before: 418099 No. 136, Hongxing South Road, Hecheng District, Huaihua City, Hunan Province Applicant before: Hunan kangbeiqi Biotechnology Co.,Ltd. |
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Denomination of invention: A method for producing shoe polish using wastewater from the production of gallic acid Effective date of registration: 20231122 Granted publication date: 20220118 Pledgee: Hunan Mayang rural commercial bank Limited by Share Ltd. Pledgor: HUNAN LINONG GALLNUT INDUSTRY DEVELOPMENT CO.,LTD. Registration number: Y2023980067050 |