CN103013169A - Spray drying method of azo-based organic dye aqueous solution - Google Patents
Spray drying method of azo-based organic dye aqueous solution Download PDFInfo
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- CN103013169A CN103013169A CN2012105520770A CN201210552077A CN103013169A CN 103013169 A CN103013169 A CN 103013169A CN 2012105520770 A CN2012105520770 A CN 2012105520770A CN 201210552077 A CN201210552077 A CN 201210552077A CN 103013169 A CN103013169 A CN 103013169A
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- aqueous solution
- dye
- spray
- azo
- organic dye
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007864 aqueous solution Substances 0.000 title claims abstract description 18
- 238000001694 spray drying Methods 0.000 title claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000004939 coking Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 5
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 2
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 2
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims 1
- 229940001584 sodium metabisulfite Drugs 0.000 claims 1
- 235000010265 sodium sulphite Nutrition 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 78
- UZZFFIUHUDOYPS-UHFFFAOYSA-L disodium 4-amino-3,6-bis[[4-[(2,4-diaminophenyl)diazenyl]phenyl]diazenyl]-5-oxido-7-sulfonaphthalene-2-sulfonate Chemical compound [Na+].[Na+].Nc1ccc(N=Nc2ccc(cc2)N=Nc2c(N)c3c(O)c(N=Nc4ccc(cc4)N=Nc4ccc(N)cc4N)c(cc3cc2S([O-])(=O)=O)S([O-])(=O)=O)c(N)c1 UZZFFIUHUDOYPS-UHFFFAOYSA-L 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000987 azo dye Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000703 high-speed centrifugation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005185 salting out Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000001149 thermolysis Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000160563 Dumetella carolinensis Species 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Coloring (AREA)
Abstract
本发明公开一种偶氮类有机染料水溶液的喷雾干燥方法，其特点是按下述步骤实施：定量称取待喷雾干燥的偶氮类有机染料水溶液，开动搅拌，加入适量水溶性防焦化剂，充分搅拌混合均匀后，送喷雾干燥器进行干燥。该方法可以克服常规偶氮类有机染料水溶液因喷雾干燥所造成的染料色光发暗，染料强度下降的缺点，并且工艺简单，易于实现。The invention discloses a spray-drying method of an azo-type organic dye aqueous solution, which is characterized in that it is carried out according to the following steps: quantitatively weigh the azo-type organic dye aqueous solution to be spray-dried, start stirring, add an appropriate amount of water-soluble anti-coking agent, After fully stirring and mixing evenly, send it to a spray dryer for drying. The method can overcome the disadvantages of dull dye color and decreased dye strength caused by spray drying of the conventional azo organic dye aqueous solution, and the process is simple and easy to realize.
Description
Technical field
The present invention relates to the drying means of organic dye; The spray drying process that particularly relates to a kind of azo organic dyestuff aqueous solution.
Background technology
The azo dyes kind is more, and chromatogram is complete, and is inexpensive, is mainly used in the textile and paper industry.In recent years, therefore the competition of dye industry impels each DYE PRODUCTION enterprise all continuing to optimize production technique, tries hard to reduce production costs, and makes the own catbird seat that occupies in market competition.Techniques such as in the production technique of azo dyes, prepared aqueous dye solutions is usually through oversalting, filtration, and is concentrated or dry and finally make powder dye or high dope body dyestuff.Traditional DYE PRODUCTION technique mainly adopts salting-out separation dyestuff composition, not only product purity is not high, there is difference between batch in the quality product of different batches, be difficult to guarantee the stable of quality product, and inorganic salt have also been used at salting-out process, therefore produced a large amount of brine wastes in filtration procedure, the discharging of these waste water has caused great pollution to environment, is seriously restricting the Sustainable development of dyestuffs industries.In recent years, in the DYE PRODUCTION process, discharge a large amount of saliferous waste water from dyestuff, guarantee simultaneously the dye product steady quality, avoid the product difference between batch, lot of domestic and foreign dyestuff enterprise adopts drying process with atomizing that the aqueous dye solutions of synthetic preparation is carried out drying one after another, wherein substantive dyestuff drying process with atomizing parameter is selected usually: inlet air temperature is 220 ℃～280 ℃, outlet air temperature is 90 ℃～110 ℃. because the dye product that obtains has particulate state, dustless and be easy to dispersing and dissolving, the characteristics such as constant product quality, therefore spray drying technology obtains the favor of dyestuff enterprise deeply, has obtained wide popularization and application at dye industry.Yet the azo dyes high high-temp stability is relatively relatively poor, in adopting the spray drying technology drying process, high temperature air can cause azo dyes generation thermolysis and produce the coking phenomenon, thereby causes the obfuscation of dye product coloured light, the shortcoming that dye strength obviously reduces.Therefore, how avoiding azo dyes that thermolysis occurs in spray-drying process, guarantee to improve dyestuff quality and intensity, is one of current urgent problem of dye industry.
Summary of the invention
The spraying drying production method that the purpose of this invention is to provide a kind of azo organic dyestuff aqueous solution.The method can overcome above-mentioned weak point.
The objective of the invention is to be achieved through the following technical solutions: a kind of spray drying process of azo organic dyestuff aqueous solution, it is characterized in that implementing in the steps below: quantitatively take by weighing and treat spray-dired azo organic dyestuff aqueous solution, start stirring, add the anti-coking agent of suitable quantity of water dissolubility, after fully mixing, send spray-dryer to carry out drying.
The dye strength of the aqueous dye solutions described in the technique scheme is 1～50%;
Spray-dryer described in the technique scheme, its inlet air temperature are 200 ℃～280 ℃, and outlet air temperature is 90 ℃～110 ℃;
Water-soluble anti-coking agent described in the technique scheme is S-WAT, sodium bisulfite, thionamic acid, or a kind of or its mixture in the Sodium Pyrosulfite;
Adding suitable quantity of water dissolubility described in the technique scheme is prevented coking agent, and its add-on is 0.1%～2% of the weight of organic dye in the azoic dyestuff aqueous solution of synthetic preparation;
The present invention compared with prior art has many advantages and positively effect
1, the spray drying process of a kind of azo organic dyestuff aqueous solution of the present invention can overcome the dye product coloured light obfuscation that causes because of spraying drying in the existing azo organic dye production process, the shortcoming of strength decreased.
2, technique of the present invention is simple, reasonable, is convenient to implement and promote.
Embodiment
The spray drying process of a kind of azo organic dyestuff aqueous solution of the present invention, to implement in the steps below: quantitatively take by weighing and treat spray-dired azo organic dyestuff aqueous solution, start stirring, add the anti-coking agent of suitable quantity of water dissolubility, after fully mixing, send spray-dryer to carry out drying.
Further describe the present invention below by embodiment.
Embodiment 1
Taking by weighing direct fast black G commercial dye (dye strength 100%), is that 13% direct fast black G dye solution is for subsequent use with the deionized water configuration concentration; Take by weighing direct fast black G commercial dye (dye strength 100%), it is 13% dye solution with the deionized water configuration concentration, add again the S-WAT account for dyestuff content 0.5%, after stirring, must add agent concentration and be 12% direct fast black G dye solution for subsequent use; Start LPG type Highspeedcentrifugingandsprayingdrier, control high speed centrifugation spray dryer inlet air temperature is 270 ± 5 ℃, outlet air temperature is the dye solution of 100 ± 5 ℃ of above-mentioned configurations of drying, respectively dry direct fast black G dye powder and add agent direct fast black G dye powder.According to the relative intensity of standard GB/T/T6688-2008 test gained dye powder, the result shows: the relative intensity that does not add agent direct fast black G dyestuff is 85%, and the relative intensity that adds the direct fast black G dyestuff of S-WAT is 95%.
Embodiment 2
Substantially the same manner as Example 1, just high speed centrifugation spray dryer inlet air temperature is adjusted into 240 ± 5 ℃, the result shows: the relative intensity that does not add agent direct fast black G dyestuff is 91%, the relative intensity that adds agent direct fast black G dyestuff is 96%.
Embodiment 3
Substantially the same manner as Example 2, just change direct fast black G commercial dye (dye strength 100%) into Direct black 22 (dye strength 150%)), the result shows: the dyestuff relative intensity that does not add the agent Direct black 22 is 138%, and the relative intensity that adds agent direct fast black 22 dyestuffs is 144%.
Embodiment 4
Substantially the same manner as Example 2, just change direct fast black G commercial dye (dye strength 100%) into dye 4BS red (dye strength 200%), the result shows: the dyestuff relative intensity that does not add the agent dye 4BS red is 182%, and the relative intensity that adds agent dye 4BS red dyestuff is 192%.
Embodiment 5
Substantially the same manner as Example 2, just the dye strength of direct fast black G commercial dye (dye strength 100%) aqueous solution is brought up to 20%, the result shows that the relative intensity of the direct fast black G dyestuff that does not add agent is 91%, and the relative intensity that adds agent direct fast black G dyestuff is 96%.
Embodiment 6
Substantially the same manner as Example 3, just change S-WAT into sodium bisulfite, the result shows: the relative intensity that does not add agent Direct black 22 dyestuff is 140%, the relative intensity that adds agent Direct black 22 dyestuff is 148%.
Embodiment 7
Substantially the same manner as Example 3, just change S-WAT into thionamic acid, the result shows: the relative intensity that does not add agent Direct black 22 dyestuff is 134%, the relative intensity that adds agent Direct black 22 dyestuff is 143%.
Embodiment 8
Substantially the same manner as Example 2, just change S-WAT into 1: 1 S-WAT of weight ratio and sodium bisulfite, the result shows: the relative intensity that does not add agent Direct black 22 dyestuff is 135%, the relative intensity that adds agent Direct black 22 dyestuff is 144%.
Embodiment 9
Substantially the same manner as Example 3, just change S-WAT into 1: 1 S-WAT of weight ratio and thionamic acid, the result shows: the relative intensity that does not add agent Direct black 22 dyestuff is 131%, the relative intensity that adds agent Direct black 22 dyestuff is 144%.
Embodiment 10
Substantially the same manner as Example 3, just change S-WAT into 1: 1 sodium bisulfite of weight ratio and thionamic acid, the result shows: the relative intensity that does not add agent Direct black 22 dyestuff is 130%, the relative intensity that adds agent Direct black 22 dyestuff is 143%.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement all should belong to protection scope of the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552077.0A CN103013169B (en) | 2012-12-06 | 2012-12-06 | A kind of spray drying method of azo organic dye aqueous solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552077.0A CN103013169B (en) | 2012-12-06 | 2012-12-06 | A kind of spray drying method of azo organic dye aqueous solution |
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| Publication Number | Publication Date |
|---|---|
| CN103013169A true CN103013169A (en) | 2013-04-03 |
| CN103013169B CN103013169B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210552077.0A Expired - Fee Related CN103013169B (en) | 2012-12-06 | 2012-12-06 | A kind of spray drying method of azo organic dye aqueous solution |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172491A (en) * | 1995-01-31 | 1998-02-04 | 巴斯福股份公司 | Granular leuco vat dye preparations |
| CN101580650A (en) * | 2009-03-31 | 2009-11-18 | 天津市亚东化工染料厂 | Direct spray drying preparation technology of direct fast black 22 |
| CN101580643A (en) * | 2009-03-31 | 2009-11-18 | 天津市亚东化工染料厂 | Pollution-free production technology of direct fast black G |
| CN102127308A (en) * | 2010-12-29 | 2011-07-20 | 黄山普米特新材料有限公司 | Read active dye and preparation method thereof |
-
2012
- 2012-12-06 CN CN201210552077.0A patent/CN103013169B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172491A (en) * | 1995-01-31 | 1998-02-04 | 巴斯福股份公司 | Granular leuco vat dye preparations |
| CN101580650A (en) * | 2009-03-31 | 2009-11-18 | 天津市亚东化工染料厂 | Direct spray drying preparation technology of direct fast black 22 |
| CN101580643A (en) * | 2009-03-31 | 2009-11-18 | 天津市亚东化工染料厂 | Pollution-free production technology of direct fast black G |
| CN102127308A (en) * | 2010-12-29 | 2011-07-20 | 黄山普米特新材料有限公司 | Read active dye and preparation method thereof |
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| CN103013169B (en) | 2014-04-02 |
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