CN102504587A - Method for recovering waste acid from sulfonation of para-ester - Google Patents
Method for recovering waste acid from sulfonation of para-ester Download PDFInfo
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- CN102504587A CN102504587A CN2011103166185A CN201110316618A CN102504587A CN 102504587 A CN102504587 A CN 102504587A CN 2011103166185 A CN2011103166185 A CN 2011103166185A CN 201110316618 A CN201110316618 A CN 201110316618A CN 102504587 A CN102504587 A CN 102504587A
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- ester
- para
- sulfonation
- sulfonation para
- waste water
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Abstract
The invention discloses a method for recovering waste acid from sulfonation of para-ester, which comprises collecting wastewater from sulfonation of para-ester, wherein the wastewater contains para-ester, sulfonated para-ester, double-sulfonated para-ester, diluted sulfuric acid, diluted hydrochloric acid and mechanical impurity; settling to recover the sulfonated para-ester, and decolorizing the rest wastewater for removing para-ester, double-sulfonated para-ester and mechanical impurity to obtain diluted sulfuric acid and diluted hydrochloric acid; and analyzing amino value and acidity of diluted sulfuric acid and diluted hydrochloric acid, delivering the recovered sulfonated para-ester, diluted sulfuric acid and diluted hydrochloric acid to a temporary storage tank, and finally delivering to a reactive black KN-B production line. The invention not only ensures the quality of dye, but also lowers cost, to achieve reduction of energy consumption.
Description
Technical field
The present invention relates to the spent acid recovery method that a kind of sulfonation para-ester produces.
Background technology
Dyestuff is middle in process of production at present; Often be accompanied by a large amount of acid waste waters and produce, acid concentration is 25～30%, and organic content is 2.5～3.0%; The enterprise that produces the middle sulfonation para-ester of dyestuff separately is very difficult good this wastewater treatment, is seriously restricting the large-scale production of this product.As far as some reactive dyestuffs manufacturers, when using sulfonation para-ester, its acid waste water can be used to produce HFGR REACTIVE Black HFGR KN-B.
Summary of the invention
The invention provides the spent acid recovery method that a kind of sulfonation para-ester produces, it not only can guarantee the quality of dyestuff, and can practice thrift cost, reaches the effect that cuts down the consumption of energy.
The present invention has adopted following technical scheme: the spent acid recovery method that a kind of sulfonation para-ester produces; It may further comprise the steps: step 1; Collect the waste water that sulfonation para-ester produces, in the waste water that sulfonation para-ester produces, contain para-ester, sulfonation para-ester, two sulfonation para-ester, dilute sulphuric acid, Hydrogen chloride and mechanical impurity; Step 2, the waste water with sulfonation para-ester produces reclaims sulfonation para-ester wherein through settling process, obtains dilute sulphuric acid and Hydrogen chloride through removing para-ester wherein, two sulfonation para-ester and mechanical impurity again; Step 3, the amino value and the acidity of analysis dilute sulphuric acid and Hydrogen chloride are sent into the sulfonation para-ester, dilute sulphuric acid and the Hydrogen chloride that reclaim in the temporary storage tank, send into reactive dyestuffs KN-B production line at last.
Settled process is three times in the step 2 of the present invention, adopts decoloring reaction to remove para-ester wherein, two sulfonation para-ester and mechanical impurity and obtains dilute sulphuric acid and Hydrogen chloride.
The present invention has following beneficial effect: the waste water that sulfonation para-ester produces is turned waste into wealth in the present invention, getting into the DYE PRODUCTION line after the wastewater treatment again, owing to produce HFGR REACTIVE Black HFGR KN-B; Both need acid, and also needed para-ester, the existence of sulfonation para-ester can cause coloured light red partially simultaneously; So not only to guaranteeing the quality of dyestuff commodity, and the spent acid that extracts in the waste water is used for the production of active KN-B, can suitably reduces the charging capacity of para-ester; Reach energy-saving and cost-reducing, the purpose that reduces cost.
Embodiment
The invention discloses the spent acid recovery method that a kind of sulfonation para-ester produces; It may further comprise the steps: step 1; Collect the waste water that sulfonation para-ester produces, in the waste water that sulfonation para-ester produces, contain para-ester, sulfonation para-ester, two sulfonation para-ester, dilute sulphuric acid, Hydrogen chloride and mechanical impurity; Step 2; Waste water with sulfonation para-ester produces reclaims sulfonation para-ester wherein through settling process, and settled process is put into three grades of settling bowls for the waste water that sulfonation para-ester is produced and carried out sedimentation; Residue waste water solution after will reclaiming is again removed para-ester wherein, two sulfonation para-ester and mechanical impurity through decoloring reaction and is obtained dilute sulphuric acid and Hydrogen chloride; The process of decoloring reaction is put into the decolouring still for remaining waste water solution, adds the gac of volume 1%, pulls an oar 30 minutes; Through the pressure filter press filtration, collect dilute sulphuric acid and Hydrogen chloride.
Step 3, the amino value and the acidity of analysis dilute sulphuric acid and Hydrogen chloride are sent into the sulfonation para-ester, dilute sulphuric acid and the Hydrogen chloride that reclaim in the temporary storage tank, send into reactive dyestuffs KN-B production line at last.
Claims (2)
1. the spent acid recovery method that produces of a sulfonation para-ester, it may further comprise the steps:
Step 1 is collected the waste water that sulfonation para-ester produces, and in the waste water that sulfonation para-ester produces, contains para-ester, sulfonation para-ester, two sulfonation para-ester, dilute sulphuric acid, Hydrogen chloride and mechanical impurity;
Step 2, the waste water with sulfonation para-ester produces reclaims sulfonation para-ester wherein through settling process, and the residue waste water solution after will reclaiming is again removed para-ester wherein, two sulfonation para-ester and mechanical impurity through decoloring reaction and is obtained dilute sulphuric acid and Hydrogen chloride;
Step 3, the amino value and the acidity of analysis dilute sulphuric acid and Hydrogen chloride are sent into the sulfonation para-ester, dilute sulphuric acid and the Hydrogen chloride that reclaim in the temporary storage tank, send into reactive dyestuffs KN-B production line at last.
2. the spent acid recovery method that sulfonation para-ester according to claim 1 produces; It is characterized in that settled process is carried out sedimentation for the waste water of sulfonation para-ester generation is put into three grades of settling bowls in the step 2; Adopt the process of decoloring reaction to put into the decolouring still, add the gac of volume 1%, pulled an oar 30 minutes for remaining waste water solution; Through the pressure filter press filtration, collect dilute sulphuric acid and Hydrogen chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103166185A CN102504587A (en) | 2011-10-18 | 2011-10-18 | Method for recovering waste acid from sulfonation of para-ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103166185A CN102504587A (en) | 2011-10-18 | 2011-10-18 | Method for recovering waste acid from sulfonation of para-ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102504587A true CN102504587A (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103166185A Pending CN102504587A (en) | 2011-10-18 | 2011-10-18 | Method for recovering waste acid from sulfonation of para-ester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898857A (en) * | 2012-09-27 | 2013-01-30 | 汤宝祥 | Circulation applying process for mother liquor waste water of coupling reaction |
| CN106277477A (en) * | 2016-10-31 | 2017-01-04 | 江苏远征化工有限公司 | The processing method of acid-bearing wastewater in a kind of 2,4 diamino benzene sulfonic acids and salt production process thereof |
| CN109912463A (en) * | 2019-04-10 | 2019-06-21 | 新乡市锦源化工有限公司 | A kind of contraposition Lipase absobed and wastewater treatment method |
| CN110066230A (en) * | 2018-08-30 | 2019-07-30 | 内蒙古利元科技有限公司 | A kind of novel sulfonated para-ester production system and technique |
| CN110117118A (en) * | 2019-04-26 | 2019-08-13 | 浙江龙盛化工研究有限公司 | A kind of processing method of chlorosulfonation acid waste water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730565A (en) * | 2005-08-30 | 2006-02-08 | 大连理工大学 | Black and active dye |
| CN101066817A (en) * | 2007-06-11 | 2007-11-07 | 浙江闰土股份有限公司 | Process of recovering and utilizing pollutant waste acid liquid |
| CN101481100A (en) * | 2008-12-12 | 2009-07-15 | 天津市德凯化工有限公司 | Comprehensive utilization method of sulphonation waste acid from sulphonation contraposition ester production process |
| CN101481097A (en) * | 2008-12-12 | 2009-07-15 | 天津市德凯化工有限公司 | Method for processing waste acid from sulphonation ester production |
-
2011
- 2011-10-18 CN CN2011103166185A patent/CN102504587A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730565A (en) * | 2005-08-30 | 2006-02-08 | 大连理工大学 | Black and active dye |
| CN101066817A (en) * | 2007-06-11 | 2007-11-07 | 浙江闰土股份有限公司 | Process of recovering and utilizing pollutant waste acid liquid |
| CN101481100A (en) * | 2008-12-12 | 2009-07-15 | 天津市德凯化工有限公司 | Comprehensive utilization method of sulphonation waste acid from sulphonation contraposition ester production process |
| CN101481097A (en) * | 2008-12-12 | 2009-07-15 | 天津市德凯化工有限公司 | Method for processing waste acid from sulphonation ester production |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898857A (en) * | 2012-09-27 | 2013-01-30 | 汤宝祥 | Circulation applying process for mother liquor waste water of coupling reaction |
| CN106277477A (en) * | 2016-10-31 | 2017-01-04 | 江苏远征化工有限公司 | The processing method of acid-bearing wastewater in a kind of 2,4 diamino benzene sulfonic acids and salt production process thereof |
| CN106277477B (en) * | 2016-10-31 | 2020-01-03 | 江苏远征化工有限公司 | Method for treating acid-containing wastewater in production process of 2, 4-diaminobenzene sulfonic acid and salt thereof |
| CN110066230A (en) * | 2018-08-30 | 2019-07-30 | 内蒙古利元科技有限公司 | A kind of novel sulfonated para-ester production system and technique |
| CN109912463A (en) * | 2019-04-10 | 2019-06-21 | 新乡市锦源化工有限公司 | A kind of contraposition Lipase absobed and wastewater treatment method |
| CN110117118A (en) * | 2019-04-26 | 2019-08-13 | 浙江龙盛化工研究有限公司 | A kind of processing method of chlorosulfonation acid waste water |
| CN110117118B (en) * | 2019-04-26 | 2022-01-14 | 浙江龙盛化工研究有限公司 | Method for treating chlorosulfonated acidic wastewater |
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Application publication date: 20120620 |