CN108889236B - Drying and forming process and device for fatty acid methyl ester sodium sulfonate - Google Patents
Drying and forming process and device for fatty acid methyl ester sodium sulfonate Download PDFInfo
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- CN108889236B CN108889236B CN201810840834.1A CN201810840834A CN108889236B CN 108889236 B CN108889236 B CN 108889236B CN 201810840834 A CN201810840834 A CN 201810840834A CN 108889236 B CN108889236 B CN 108889236B
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- 238000001035 drying Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 25
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 25
- 239000011734 sodium Substances 0.000 title claims abstract description 25
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 title claims abstract description 24
- 235000019387 fatty acid methyl ester Nutrition 0.000 title claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 50
- 239000007787 solid Substances 0.000 claims abstract description 31
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 28
- 229930195729 fatty acid Natural products 0.000 claims abstract description 28
- 239000000194 fatty acid Substances 0.000 claims abstract description 28
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 14
- CAQWNKXTMBFBGI-UHFFFAOYSA-N C.[Na] Chemical compound C.[Na] CAQWNKXTMBFBGI-UHFFFAOYSA-N 0.000 claims abstract description 12
- AFVFQIVMOAPDHO-UHFFFAOYSA-M Methanesulfonate Chemical compound CS([O-])(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-M 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- -1 fatty acid sodium methyl sulfonate Chemical class 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 14
- 238000001291 vacuum drying Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000004094 surface-active agent Substances 0.000 abstract description 4
- 238000001723 curing Methods 0.000 description 24
- 238000001816 cooling Methods 0.000 description 16
- 238000000465 moulding Methods 0.000 description 8
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 238000013035 low temperature curing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/28—Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Drying Of Solid Materials (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a drying and forming process and a device of a surfactant of fatty acid methyl ester sodium sulfonate, wherein the drying and forming process comprises the following steps: 1) According to the traditional production process of fatty acid sodium methyl sulfonate, the neutralized slurry obtained by neutralization enters a drying system to remove the solvent in the neutralized slurry, so as to obtain fatty acid sodium methyl sulfonate slurry with high solid content; 2) The dried slurry enters a curing stay column for curing treatment; 3) The cured slurry enters a steel belt cooler, and is cooled, solidified, formed and sliced on the steel belt cooler to obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of more than or equal to 85 percent; the sheet product can be directly sold as a finished product, or further crushed and granulated to obtain a powdery and granular product. The process can effectively improve the curing speed of the product at low temperature, and solves the problems of poor running stability, high energy consumption and the like in the existing sodium fatty acid methyl sulfonate drying and forming process.
Description
Technical Field
The invention relates to a drying and forming process of a surfactant, in particular to a drying and forming process of fatty acid methyl ester sodium sulfonate.
Technical Field
The fatty acid methyl sodium sulfonate (MES) is an anionic surfactant produced by taking natural renewable grease, namely palm oil, as a raw material, has the advantages of mild performance, safety, no toxicity, small irritation to human bodies, strong hard water resistance, excellent detergency in cold and warm water, easiness in biodegradation of washing wastewater and the like, is a third-generation environment-friendly surfactant which is internationally accepted at present and can replace petroleum-based surfactant sodium alkylbenzenesulfonate, and is widely applied to various household washing products such as liquid detergents, phosphorus-free washing powder and the like, textile printing industry, petrochemical products and industrial hard surface cleaning aspects.
The production process of MES is complex, and the solid sodium fatty acid methyl sulfonate is produced by sulfonation, aging, re-esterification of methyl ester sulfonic acid, bleaching, neutralization and drying and molding of fatty acid methyl ester at present.
The continuous normal operation of the current drying and forming system is a key technology in MES production, and generally, the MES slurry is dehydrated and dried at high temperature by utilizing a drying system, and then is cooled, solidified and formed by utilizing a steel belt cooler to obtain a solid MES product. The curing speed of the MES with different solid contents at low temperature is greatly different, the MES product with 95% of solid content is thoroughly cured at 5 ℃ for only a few minutes, but the product with 90% of solid content is thoroughly cured at 5 ℃ for possibly a few hours, and the curing speed is difficult to realize cooling, curing and forming on some existing cooling and forming equipment.
Therefore, in the conventional dry molding technology of MES, the MES slurry is generally dried to a solid content of 95% in a drying system, and then cooled, solidified and molded by a cooling molding device such as a steel belt cooler. However, the viscosity of sodium fatty acid methyl ester sulfonate increases dramatically with increasing active content; when the temperature is 90 ℃, the viscosity of the product with the solid content of 95 percent is as high as 800Pa s, and the high viscosity leads to extremely high equipment requirements of a fatty acid methyl sodium sulfonate drying system, high drying energy consumption and difficult continuous normal operation.
Disclosure of Invention
The invention aims to provide a drying and forming process and device of fatty acid methyl sodium sulfonate; the process can effectively improve the curing speed of the product at low temperature, and solves the problems of poor running stability, high energy consumption and the like in the existing sodium fatty acid methyl sulfonate drying and forming process.
The invention is realized by the following technical scheme:
a drying and forming process of fatty acid methyl ester sodium sulfonate comprises the following steps:
1) According to the traditional production process of fatty acid sodium methyl sulfonate, the neutralized slurry obtained by neutralization enters a drying system to remove the solvent in the neutralized slurry, so as to obtain fatty acid sodium methyl sulfonate slurry with high solid content;
2) The dried slurry enters a curing stay column for curing treatment;
3) The cured slurry enters a steel belt cooler, and is cooled, solidified, formed and sliced on the steel belt cooler to obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of more than or equal to 85 percent;
the sheet product can be directly sold as a finished product, or the sheet product is crushed and granulated to obtain a powdery and granular product.
In the step 1), the obtained neutralization slurry is sodium fatty acid methyl sulfonate slurry containing 0-40% of methanol and 10-50% of water; and drying the obtained fatty acid methyl sodium sulfonate slurry at 90-95 ℃ to remove the solvent, and obtaining the fatty acid methyl sodium sulfonate slurry with 85-95% of solid content.
In the step 2), the curing treatment is intermittent standing heat preservation treatment or continuous laminar flow heat preservation treatment;
the intermittent standing heat preservation treatment is carried out, the heat preservation temperature is 85-95 ℃, and the standing time is 0.5-24 h;
the continuous laminar flow heat preservation treatment is carried out at the heat preservation temperature of 75-95 ℃ and the laminar flow speed of the materials is less than or equal to 0.01
m/s, and the average residence time of laminar flow heat preservation treatment is 1-24 h.
In the step 2), the slurry is cooled before entering the curing treatment.
In the step 3), the operation temperature of the steel belt cooler is 5-10 ℃, and the cooling solidification time is 5-30min.
The drying and forming device for the fatty acid methyl ester sodium sulfonate is characterized by comprising a neutralization slurry inlet, a vacuum drying system, a drying conveying pump, a curing stay column, a steel belt cooler and a finished product outlet which are sequentially connected through pipelines;
the vacuum drying system is formed by connecting one or more drying devices in series; the drying device is a vacuum turbulence dryer or a vacuum film scraping dryer;
the curing stay column is a conventional tank body for intermittent production or a laminar flow column for continuous production.
A cooler is also connected in series before the curing stay column.
Compared with the prior art, the invention has the following technical characteristics and advantages:
1. according to the invention, the high-content sodium fatty acid methyl sulfonate slurry from the original drying system is cured, so that the intermolecular arrangement of sodium fatty acid methyl sulfonate and water is changed, and the curing speed of the sodium fatty acid methyl sulfonate slurry at low temperature can be obviously improved; taking an example of MES slurry with 85% solid content, the low-temperature curing time can be reduced from original hours to minutes. According to the process of the invention, rapid cooling solidification can be realized on cooling forming equipment by only dehydrating and drying MES slurry to a solid content of 85% in a drying system.
2. The storage and transportation stability of MES products with the solid content of 85% at normal temperature is not greatly different from that of products with the solid content of more than 95%, but the viscosity difference of the MES products with the solid content of more than 95% is obvious at 90 ℃ (the viscosity of the slurry of the MES products with the solid content of 85% is 100 Pa.s at 90 ℃, and the viscosity of the slurry of the MES products with the solid content of 95% is as high as 800 Pa.s at 90 ℃); the process can stably produce solid MES products with 85 percent of solid content, greatly reduces the running energy consumption of a drying system (generally by more than 60 percent) due to the reduction of the viscosity of slurry of the drying system, greatly reduces the equipment requirements of the drying system, and greatly improves the continuous running stability.
3. The process of the invention improves the low-temperature solidification speed of the fatty acid methyl sodium sulfonate slurry, so that the operation efficiency of the steel belt cooler is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a continuous drying and forming device for sodium fatty acid methyl ester sulfonate.
In the figure, 1 is an MES neutralization slurry inlet, 2 is a drying system, 3 is a drying conveying pump, 4 is a curing stay column, 5 is a steel belt cooler, and 6 is a finished product outlet.
Detailed Description
The invention is further illustrated below in connection with specific embodiments.
Example 1
3t/h of continuous drying and forming device for fatty acid methyl ester sodium sulfonate.
The device comprises a neutralized slurry inlet, a vacuum drying system, a drying delivery pump, a curing stay column, a steel belt cooler and a finished product outlet which are sequentially connected through pipelines; the drying system adopts a set of vacuum turbulence drying equipment and a set of vacuum film scraping drying equipment which are connected in series, and the curing stay column is a phi 1000mm and 4000mm laminar flow column.
The MES neutralization slurry (the mass fraction of the specific components is MES55%, the water is 30% and the methanol is 15%) obtained by the neutralization system enters a drying system according to the flow of 3t/h, and the MES slurry with the temperature of 90 ℃ and the solid content of 85% is obtained after drying; the dried slurry is conveyed into a curing stay column through a drying conveying pump, and is cured for about 100min at about 90 ℃; finally, cooling and molding the mixture in a steel belt cooler at the temperature of 5 ℃ to finally obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of 85 percent. The solidification speed of the product at 5 ℃ is compared with that of a product obtained by a conventional process (a direct cooling molding process after drying) as follows:
table 1 Low temperature cure speed vs. data for MES
| Product processing mode | Curing time at 5 ℃ |
| Direct cooling forming process after drying | >2h |
| The treatment according to the invention | 150s |
Example two
3t/h of continuous drying and forming device for fatty acid methyl ester sodium sulfonate.
The device comprises a neutralized slurry inlet, a vacuum drying system, a drying delivery pump, a curing stay column, a steel belt cooler and a finished product outlet which are sequentially connected through pipelines; wherein the drying system adopts a set of vacuum turbulence drying equipment and a set of vacuum roller drying equipment which are connected in series; the maturation residence column was a phi 1000mm x 4000mm laminar flow column.
The MES neutralization slurry (the mass fraction of the specific components is MES60%, the water is 30% and the methanol is 10%) obtained by the neutralization system enters a drying system according to the flow of 3t/h, and the MES slurry with the temperature of 95 ℃ and the solid content of 90% is obtained after drying; the dried slurry is conveyed by a drying conveying pump, cooled to 85 ℃ by a tube-in-tube cooler, enters a curing stay column, and is cured for about 100min at about 85 ℃; finally, cooling and molding the mixture in a steel belt cooler at the temperature of 5 ℃ to finally obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of 90%. The solidification speed of the product at 5 ℃ is compared with that of a product obtained by a conventional process (a direct cooling molding process after drying) as follows:
table 2 Low temperature cure speed vs. data for MES
| Product processing mode | Curing time at 5 ℃ |
| Direct cooling forming process after drying | >2h |
| The treatment according to the invention | 100s |
Example III
3t/h of fatty acid methyl ester sodium sulfonate drying and forming device.
The device comprises a neutralized slurry inlet, a vacuum drying system, a drying delivery pump, a curing stay column, a steel belt cooler and a finished product outlet which are sequentially connected through pipelines; wherein the drying system adopts a set of vacuum turbulence drying equipment and a set of vacuum film scraping drying equipment which are connected in series; curing residence column of 10m 3 Is a heat insulation tank.
The MES neutralization slurry (the mass fraction of the specific components is MES60%, the water is 30% and the methanol is 10%) obtained by the neutralization system enters a drying system according to the flow of 3t/h, and the MES slurry with the temperature of 95 ℃ and the solid content of 90% is obtained after drying; and (3) conveying the dried slurry through a drying conveying pump, cooling to 85 ℃ through a tube-in-tube cooler, then entering a curing stay column, standing at 85 ℃ for 3 hours, and then entering a steel belt cooler for cooling and forming at 5 ℃ to finally obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of 90%. The solidification speed of the product at 5 ℃ is compared with that of a product obtained by a conventional process (a direct cooling molding process after drying) as follows:
table 3 Low temperature cure speed vs. data for MES
| Product processing mode | 5 ℃ 90% MES curing time |
| Direct cooling forming process after drying | >2h |
| The treatment according to the invention | 100s |
Claims (1)
1. A drying and forming process of fatty acid methyl ester sodium sulfonate adopts a drying and forming device of fatty acid methyl ester sodium sulfonate; the method is characterized in that: the device comprises a neutralized slurry inlet, a vacuum drying system, a drying delivery pump, a curing stay column, a steel belt cooler and a finished product outlet which are sequentially connected through pipelines;
the vacuum drying system is formed by connecting one or more drying devices in series; the drying device is a vacuum turbulence dryer or a vacuum film scraping dryer;
the curing stay column is a conventional tank body for intermittent production or a laminar flow column for continuous production;
a cooler is connected in series before the curing stay column;
the drying and forming process comprises the following steps:
1) According to the traditional production process of fatty acid sodium methyl sulfonate, the neutralized slurry obtained by neutralization enters a drying system to remove the solvent in the neutralized slurry, so as to obtain fatty acid sodium methyl sulfonate slurry with high solid content;
2) The dried slurry enters a curing stay column for curing treatment;
3) The cured slurry enters a steel belt cooler, and is cooled, solidified, formed and sliced on the steel belt cooler to obtain a flaky fatty acid methyl sodium sulfonate product with the solid content of more than or equal to 85 percent;
the flaky fatty acid methyl ester sodium sulfonate product with the solid content of more than or equal to 85 percent is directly sold as a finished product, or is crushed and granulated to obtain a powdery and granular product;
in the step 1), the obtained neutralization slurry is sodium fatty acid methyl sulfonate slurry containing 0-40% of methanol and 10-50% of water; the sodium fatty acid methyl sulfonate slurry obtained by drying is dried at the temperature of 90-95 ℃ to remove the solvent, and then the sodium fatty acid methyl sulfonate slurry with the solid content of 85-95% is obtained;
in the step 2), the curing treatment is intermittent standing heat preservation treatment or continuous laminar flow heat preservation treatment;
the intermittent standing heat preservation treatment is carried out, the heat preservation temperature is 85-95 ℃, and the standing time is 0.5-24 h;
the continuous laminar flow heat preservation treatment is carried out at the heat preservation temperature of 75-95 ℃ and the laminar flow speed of the materials is less than or equal to 0.01
m/s, and carrying out laminar flow heat preservation treatment for 1-24 hours;
in the step 2), the slurry is cooled before curing treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840834.1A CN108889236B (en) | 2018-07-27 | 2018-07-27 | Drying and forming process and device for fatty acid methyl ester sodium sulfonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840834.1A CN108889236B (en) | 2018-07-27 | 2018-07-27 | Drying and forming process and device for fatty acid methyl ester sodium sulfonate |
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| CN108889236B true CN108889236B (en) | 2024-02-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054354A (en) * | 2007-06-14 | 2007-10-17 | 浙江赞成科技有限公司 | Process for preparing methyl sodiosul foaliphatate |
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