CN112657316A - Absorbent for purifying waste gas in PVC glove industry and preparation method thereof - Google Patents
Absorbent for purifying waste gas in PVC glove industry and preparation method thereof Download PDFInfo
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- 239000002250 absorbent Substances 0.000 title claims abstract description 31
- 230000002745 absorbent Effects 0.000 title claims abstract description 31
- 239000002912 waste gas Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000000746 purification Methods 0.000 claims abstract description 19
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 8
- 239000000080 wetting agent Substances 0.000 claims abstract description 8
- 230000015556 catabolic process Effects 0.000 claims abstract description 6
- 238000006731 degradation reaction Methods 0.000 claims abstract description 6
- 238000004945 emulsification Methods 0.000 claims abstract description 6
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 30
- 239000011259 mixed solution Substances 0.000 claims description 20
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 16
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 11
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 6
- FCBUKWWQSZQDDI-UHFFFAOYSA-N rhamnolipid Chemical compound CCCCCCCC(CC(O)=O)OC(=O)CC(CCCCCCC)OC1OC(C)C(O)C(O)C1OC1C(O)C(O)C(O)C(C)O1 FCBUKWWQSZQDDI-UHFFFAOYSA-N 0.000 claims description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- HDTRYLNUVZCQOY-UHFFFAOYSA-N α-D-glucopyranosyl-α-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(O)C(O)C(CO)O1 HDTRYLNUVZCQOY-UHFFFAOYSA-N 0.000 claims description 4
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 4
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 claims description 4
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 claims description 4
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 3
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-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
- ZTOKUMPYMPKCFX-CZNUEWPDSA-N (E)-17-[(2R,3R,4S,5S,6R)-6-(acetyloxymethyl)-3-[(2S,3R,4S,5S,6R)-6-(acetyloxymethyl)-3,4,5-trihydroxyoxan-2-yl]oxy-4,5-dihydroxyoxan-2-yl]oxyoctadec-9-enoic acid Chemical compound OC(=O)CCCCCCC/C=C/CCCCCCC(C)O[C@@H]1O[C@H](COC(C)=O)[C@@H](O)[C@H](O)[C@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](COC(C)=O)O1 ZTOKUMPYMPKCFX-CZNUEWPDSA-N 0.000 claims description 2
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 claims description 2
- 238000006065 biodegradation reaction Methods 0.000 claims description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 239000003995 emulsifying agent Substances 0.000 claims 1
- 230000001804 emulsifying effect Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 12
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 7
- 239000003517 fume Substances 0.000 abstract description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 22
- 239000004800 polyvinyl chloride Substances 0.000 description 22
- 239000012855 volatile organic compound Substances 0.000 description 21
- 239000003921 oil Substances 0.000 description 20
- 239000000779 smoke Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010815 organic waste Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000012668 chain scission Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to an absorbent for purifying waste gas in PVC glove industry and a preparation method thereof, wherein the absorbent comprises the following components: 0.2-5% of surfactant, 0.1-2% of emulsification solubilizer, 0.1-2% of inorganic dispersing agent, 0.1-1% of wetting agent, 0-0.15% of biochemical degradation auxiliary agent, 0-0.5% of defoaming agent and the balance of water, wherein the wetting agent is sodium lignosulfonate. The absorbent for purifying the waste gas in the PVC glove industry has good absorption effect on long-chain alkane above C10, excellent wettability, no foam, high purification mass transfer efficiency, low B/C ratio, good biodegradability, convenient treatment, high oil fume capture rate and high total absorption rate of VOC.
Description
Technical Field
The invention belongs to the technical field of industrial waste gas purification, and particularly relates to an absorbent for waste gas purification in the PVC glove industry and a preparation method thereof.
Background
A large amount of D70 solvent oil (low aromatic hydrocarbon solvent oil mainly comprising C10-C13 straight-chain alkane) is used in the production process of the PVC gloves, the using amount can reach 35 percent of the total material amount, in the processes of batching, dipping in a mold, plasticizing, secondary plasticizing, drying and cooling, particularly relating to high-temperature processes such as high-temperature baking plasticizing, drying and cooling, a large amount of waste gas can be generated, the VOC concentration is high, meanwhile, the waste gas also contains a large amount of high-boiling-point substance oil smoke formed by plasticizer such as dibutyl phthalate (DBP) and dioctyl terephthalate (DOTP), therefore, the temperature generated in the production of the PVC gloves is high, the waste gas mixed with oil smoke, particles, odor and VOC pollutants is greatly purified and reaches the standard, and the treatment industrial degree is low.
The common VOCs purification methods at present comprise absorption, adsorption, combustion, catalytic oxidation, biological purification, photocatalysis, low-temperature plasma purification and the like, but for VOC (volatile organic compound) oil fume waste gas generated in the production of PVC (polyvinyl chloride) gloves, the adsorption method cannot solve the problem that high-boiling residues are blocked to damage an adsorbent; the combustion and catalytic oxidation method has high investment and energy consumption under large wind quantity, and has huge oil smoke enrichment explosion-proof safety risk; the biological decomposition method has almost no effect on long straight-chain hydrocarbon, and the oil smoke seriously blocks biological fillers; the photocatalytic oxidation and low-temperature plasma process can only achieve the chain scission effect on long straight-chain hydrocarbon, and the VOC concentration can be even greatly increased in practical tests.
The absorption method has strong adaptability to VOC components, concentration, air volume and the like, has wide application range, is simple to operate and maintain, does not need pretreatment, and has wide application in waste gas treatment in various industries. The surfactant is widely researched and applied as an active component of an absorption system, but in the waste gas treatment occasion of the PVC glove industry, the following problems exist: l) the dissolution and absorption effects of a pure surfactant solution on long linear alkane are poor; 2) the absorbent has poor wettability, the liquid film uniformity of absorption liquid on the surface of the filler is poor due to the enrichment of high-boiling high-viscosity oil fume, and the gas-liquid mass transfer efficiency is low; 3) the absorption wastewater has low BOD/COD ratio caused by high content of long-chain alkane, surfactant, inorganic salt and the like, has poor biodegradability and high biochemical treatment difficulty; 4) the foaming characteristic of the surfactant can generate a large amount of foam in the absorption process, so that the foam occupies a gas-liquid mass transfer space, the absorption mass transfer efficiency and the VOCs removal effect are influenced, the operation of an absorption liquid circulating pump is also influenced, the excessive waste and pollution of the absorbent can be caused, and the maintenance difficulty is increased.
Chinese patents CN105688599A and CN205360981U combine condensation, washing, electrostatic oil smoke removal and a process of recovering VOC by zeolite wheel adsorption, and CN105854478B adopts secondary condensation, washing to remove oil smoke and activated carbon to adsorb and recover organic matters, but in practical application, although a large amount of plasticizer can be recovered from a large amount of high-boiling-point plasticizer oil smoke in the exhaust gas through condensation, electrostatic demisting and washing demisting processes, the purifying effect on oil smoke particles with a particle size of not less than 0.1 μm is good, but a large amount of high-boiling-point oil smoke with a particle size of not more than 0.05 μm and which cannot be removed by the electrostatic method and the washing method remains, and after directly entering a downstream activated carbon or zeolite wheel adsorption system, the service life of the adsorbent can be greatly shortened, the maintenance cost of the actual engineering adsorbent is very high, and the adsorption method does not have.
For the oil smoke and the VOC mixed organic waste gas in the PVC industry, the patents CN109624167A, CN209576143U and CN105397966B adopt the technological combination of condensation, water washing and electrostatic demisting to capture and remove the oil smoke in the oil smoke and the VOC mixed organic waste gas in different degrees respectively, but do not relate to the VOC purification requirement, and the VOC can not reach the standard and be discharged.
The patents CN109966864A, CN106853321A and CN103007714A adopt absorption liquids prepared from surfactants, inorganic additives, defoaming agents and the like with different formulas to absorb and purify industrial organic waste gas, but in high-boiling oil fume and VOC waste gas in the PVC glove industry, in actual use, long linear chain alkane substances with more than C10 have high surface binding energy at normal temperature, large viscosity and poor binding property with the surfactants, resulting in poor absorption effect. And the absorbent has poor wettability on the surface of the filler, poor biodegradability of the absorption liquid, serious foaming of the surfactant and the like.
Disclosure of Invention
The prepared absorbent has good absorption effect on long-chain alkane above C10, excellent wettability, no foam, high purification mass transfer efficiency, low B/C ratio, good biodegradability, convenient treatment, high oil fume trapping rate and total VOC absorption rate, and can be used as tail end standard-reaching standard-control purification equipment.
The technical scheme adopted by the invention for solving the problems is as follows: an absorbent for purifying waste gas in PVC glove industry comprises the following components:
0.2 to 5 percent of surfactant
0.1-2% of emulsification solubilizer
0.1-2% of inorganic dispersing agent
0.1 to 1 percent of wetting agent
0 to 0.15 percent of biochemical degradation auxiliary agent
0 to 0.5 percent of defoaming agent,
the balance of water.
Wherein the wetting agent is sodium lignosulfonate.
Preferably, the surfactant is at least one of sodium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether and fatty acid-polyoxyethylene ether, and the fatty alcohol-polyoxyethylene ether and the fatty acid-polyoxyethylene ether are both low-foam type.
Preferably, the emulsification solubilizer is one of tween 60, tween 80, span 60, span 80, nonylphenol polyoxyethylene ether and octylphenol polyoxyethylene ether.
Preferably, the inorganic dispersing agent is one of sodium citrate, sodium oleate and sodium polyacrylate.
Preferably, the biochemical degradation auxiliary agent is one of rhamnolipid, sophorolipid and trehalose tetralipid, and in actual use, a solvent can be further added into the biological degradation auxiliary agent according to dispersion requirements, wherein the solvent is ethanol or isopropanol.
Preferably, the defoaming agent is at least one of organic siloxane, polyether and emulsified silicone oil.
Wherein, when the low-foam fatty alcohol-polyoxyethylene ether or low-foam fatty acid-polyoxyethylene ether surfactant is adopted, the dosage of the defoaming agent can be 0, namely the defoaming agent is not used.
The invention also aims to provide a preparation method of the absorbent for purifying waste gas in the PVC glove industry, which comprises the following steps:
(1) weighing the surfactant, the emulsification solubilizer, the inorganic diffusant and the biodegradation auxiliary agent according to the proportion, putting the raw materials into a stirring kettle, adding water, stirring at a low speed and dissolving until the raw materials are clear and have no suspended matters to obtain a first mixed solution.
(2) And adding a wetting agent into the first mixed solution in proportion, and stirring at a low speed until no suspended matters exist to obtain a second mixed solution.
(3) And adding a defoaming agent into the second mixed solution in proportion, stirring at a low speed until the mixture is clear and uniform and has no suspended matters, and then sequentially filtering and filling to obtain a finished product.
Preferably, the stirring speed in the steps (1), (2) and (3) is 20-100 rpm/min.
Preferably, the materials are weighed and stirred at 15-30 ℃ in the steps (1), (2) and (3).
More preferably, the materials are weighed and stirred at 20-25 ℃ in the steps (1), (2) and (3).
Compared with the prior art, the invention has the advantages that:
the absorbent has good absorption effect on long-chain alkane above C10, excellent wettability, no foam, high purification and mass transfer efficiency, low B/C ratio, good biodegradability and convenient treatment; the invention has the following effects of purifying the oil fume VOC waste gas discharged in the production of PVC gloves: the total absorption rate of volatile VOC of the D70 solvent oil is more than 90%.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
An absorbent for purifying waste gas in PVC glove industry comprises the following raw materials by mass percent: 0.3% of sodium dodecyl benzene sulfonate, 600.2% of tween, 0.15% of sodium citrate, 0.1% of sodium lignosulfonate, 0.01% of rhamnolipid and 0.8978% of silicone emulsion AFE-14100.03%.
A preparation method of an absorbent for purifying waste gas in PVC glove industry comprises the following steps:
(1) weighing sodium dodecyl benzene sulfonate, tween 60, sodium citrate and rhamnolipid according to the proportion, putting the raw materials into a stirring kettle, adding water, and stirring at a stirring speed of 50rpm until the mixture is clear and has no suspended matters to obtain a first mixed solution.
(2) And adding sodium lignosulfonate into the first mixed solution in proportion, and stirring at a stirring speed of 40rpm until no suspended matters exist to obtain a second mixed solution.
(3) Adding emulsified silicone oil AFE-1410 into the second mixed solution in proportion, stirring at the stirring speed of 40rpm until the solution is clear, uniform and free of suspended matters, and then sequentially filtering and filling to obtain a finished product.
The above preparation steps are all carried out at 20 ℃.
Example 2
An absorbent for purifying waste gas in PVC glove industry comprises the following raw materials by mass percent: 0.5% of low-foam fatty acid polyoxyethylene ether, 800.4% of span, 0.15% of sodium oleate, 0.1% of sodium lignin sulfonate and 0.015% of trehalose tetraester.
A preparation method of an absorbent for purifying waste gas in PVC glove industry comprises the following steps:
(1) weighing low-foam fatty acid polyoxyethylene ether, span 80, sodium oleate and trehalose tetraester according to the proportion, putting the raw materials into a stirring kettle, adding water, and stirring at a stirring speed of 60rpm until the raw materials are clear and have no suspended matters to obtain a first mixed solution.
(2) And adding sodium lignosulfonate into the first mixed solution in proportion, stirring at a stirring speed of 50rpm until no suspended matters exist to obtain a second mixed solution, and sequentially filtering and filling to obtain a finished product.
The above preparation steps are all carried out at 25 ℃.
Example 3
An absorbent for purifying waste gas in PVC glove industry comprises the following raw materials by mass percent: 1.0% of sodium dodecyl benzene sulfonate, 800.8% of tween, 0.5% of sodium polyacrylate, 0.2% of sodium lignosulfonate, 0.15% of rhamnolipid and emulsified silicone oil AFE-14100.3%.
A preparation method of an absorbent for purifying waste gas in PVC glove industry comprises the following steps:
(1) weighing sodium dodecyl benzene sulfonate, tween 80, sodium polyacrylate and rhamnolipid according to the proportion, putting the raw materials into a stirring kettle, adding water, stirring and dissolving at a stirring speed of 80rpm until the mixture is clear and has no suspended matters to obtain a first mixed solution.
(2) And adding sodium lignosulfonate into the first mixed solution in proportion, and stirring at a stirring speed of 40rpm until the first mixed solution is clear and free of suspended matters to obtain a second mixed solution.
(3) Adding emulsified silicone oil AFE-1410 into the second mixed solution in proportion, stirring at the stirring speed of 30rpm until the solution is clear and uniform suspended matters are obtained, and then sequentially filtering and filling to obtain a finished product.
The above preparation steps are all carried out at 20 ℃.
For the waste gases with different composition contents generated in the production process of PVC gloves, the purification effects of the examples 1-3 are as follows:
exhaust gas 1
Two lines of waste gas discharged in the production process of PVC gloves produced in the factory A contain D70 volatile compound VOC flue gas air quantity 20000Nm3The temperature is 45 ℃, and the concentration of main volatile organic compounds entering the absorption tower is as follows: 220 mg/m3。
Exhaust gas 2
The total exhaust air volume of the waste gas discharged in the production process of PVC gloves produced in the second factory is 80000Nm3The temperature is 35 ℃, the concentration of main volatile organic compounds entering the absorption tower after front-section absorption is as follows: 350mg/m3。
Exhaust gas III
The waste gas discharged in the production process of PVC gloves produced in the third factory, one 2 hundred million glove production line, contains D70 volatile oil fume with air volume of 25000Nm3The temperature is 45 ℃, and the concentration of main volatile organic compounds entering the absorption tower is as follows: 280 mg/m3。
EXAMPLES 1-3 purification Effect of absorbent
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (9)
1. An absorbent for purifying waste gas in PVC glove industry is characterized in that: comprises the following components:
0.2 to 5 percent of surfactant
0.1-2% of emulsification solubilizer
0.1-2% of inorganic dispersing agent
0.1 to 1 percent of wetting agent
0 to 0.15 percent of biochemical degradation auxiliary agent
0 to 0.5 percent of defoaming agent
The balance of water;
the wetting agent is sodium lignosulfonate.
2. The absorbent for PVC glove industry exhaust gas purification according to claim 1, characterized in that: the surfactant is at least one of sodium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether and fatty acid-polyoxyethylene ether, and the fatty alcohol-polyoxyethylene ether and the fatty acid-polyoxyethylene ether are low-foam type.
3. The absorbent for PVC glove industry exhaust gas purification according to claim 1, characterized in that: the emulsifying and solubilizing agent is one of tween 60, tween 80, span 60, span 80, nonylphenol polyoxyethylene ether and octylphenol polyoxyethylene ether.
4. The absorbent for PVC glove industry exhaust gas purification according to claim 1, characterized in that: the inorganic dispersing agent is one of sodium citrate, sodium oleate and sodium polyacrylate.
5. The absorbent for PVC glove industry exhaust gas purification according to claim 1, characterized in that: the biochemical degradation auxiliary agent is one of rhamnolipid, sophorolipid and trehalose tetralipid.
6. The absorbent for PVC glove industry exhaust gas purification according to claim 1, characterized in that: the defoaming agent is at least one of organic siloxane, polyether and emulsified silicone oil.
7. A preparation method of an absorbent for purifying waste gas in PVC glove industry is characterized by comprising the following steps: the method comprises the following steps:
(1) weighing the surfactant, the emulsification solubilizer, the inorganic diffusant and the biodegradation auxiliary agent according to the proportion of claim 1, putting the raw materials into a stirring kettle, adding water, stirring at a low speed to dissolve until the raw materials are clear and have no suspended matters to obtain a first mixed solution;
(2) adding a wetting agent into the first mixed solution in proportion, and stirring at a low speed until no suspended matters exist to obtain a second mixed solution;
(3) and adding a defoaming agent into the second mixed solution in proportion, stirring at a low speed until the mixture is clear and uniform and has no suspended matters, and then sequentially filtering and filling to obtain a finished product.
8. The preparation method of the absorbent for PVC glove industry exhaust gas purification as claimed in claim 7, wherein the absorbent comprises the following steps: the stirring speed in the steps (1), (2) and (3) is 20-100 rpm.
9. The preparation method of the absorbent for PVC glove industry exhaust gas purification as claimed in claim 7, wherein the absorbent comprises the following steps: weighing and stirring at 15-30 ℃ in the steps (1), (2) and (3).
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