CN104649461A - Recovery method of waste acid generated from sulfonated para-ester - Google Patents
Recovery method of waste acid generated from sulfonated para-ester Download PDFInfo
- Publication number
- CN104649461A CN104649461A CN201310597882.XA CN201310597882A CN104649461A CN 104649461 A CN104649461 A CN 104649461A CN 201310597882 A CN201310597882 A CN 201310597882A CN 104649461 A CN104649461 A CN 104649461A
- Authority
- CN
- China
- Prior art keywords
- ester
- para
- hydrochloric acid
- acid
- sulfonation para
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/06—Separation; Purification; Stabilisation; Use of additives
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Removal Of Specific Substances (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a recovery method of waste acid generated from sulfonated para-ester. The method comprises the following steps: Step 1, collecting wastewater generated from sulfonated para-ester, wherein the wastewater generated from sulfonated para-ester contains para-ester, sulfonated para-ester, double-sulfonated para-ester, diluted acid, diluted hydrochloric acid and mechanical impurities; Step 2, recovering sulfonated para-ester in the wastewater generated from sulfonated para-ester through a settling process, and carrying out a decolorizing reaction on the residual wastewater solution obtained after recovery to remove para-ester, double-sulfonated para-ester and mechanical impurities in the residual wastewater solution so as to obtain dilute sulphuric acid and diluted hydrochloric acid; and Step 3, analyzing amino value and acidity of dilute sulphuric acid and diluted hydrochloric acid, sending the recovered sulfonated para-ester, dilute sulphuric acid and diluted hydrochloric acid into a temporary storage tank, and finally sending to a reactive dye KN-B production line. According to the invention, quality of dyes can be guaranteed, costs can be saved, and the effect of reducing energy consumption can be achieved.
Description
Technical field
The present invention relates to the recovery method of the spent acid that a kind of sulfonation para-ester produces.
Background technology
In the middle of current dyestuff in process of production; often produce along with a large amount of acid waste water, acid concentration is at 25-30%, and organic content is at 2.5-3.0%; in the middle of independent production dyestuff, the enterprise of sulfonation para-ester is very difficult good this wastewater treatment, seriously governs the large-scale production of this product.For some reactive dyestuffs manufacturers, while use sulfonation para-ester, its acid waste water may be used for producing Reactive dye red M-3BE.
Summary of the invention
The object of this invention is to provide a kind of waste acidity recovery method that sulfonation para-ester produces, it not only can ensure the quality of dyestuff, and can be cost-saving, reaches the effect reducing energy consumption.
The object of the invention is by realizing by the following technical solutions: a kind of waste acidity recovery method that sulfonation para-ester produces, it comprises the following steps: step one, collect the waste water that sulfonation para-ester produces, containing para-ester, sulfonation para-ester, two sulfonation para-ester, dilute acid, dilute hydrochloric acid and mechanical impurity in the waste water that sulfonation para-ester produces; Step 2, by the waste water that sulfonation para-ester produces, through settling process recovery sulfonation para-ester wherein, then obtains dilute sulphuric acid and dilute hydrochloric acid by the residue waste water solution after reclaiming through decoloring reaction removing para-ester, two sulfonation para-ester and mechanical impurity wherein; Step 3, analyzes amino value and the acidity of dilute sulphuric acid and dilute hydrochloric acid, the sulfonation para-ester of recovery, dilute sulphuric acid and dilute hydrochloric acid is sent in temporary storage tank, finally sends into reactive dyestuffs KN-B production line.
The process of sedimentation in step 2 of the present invention is three times, adopts decoloring reaction removing para-ester, two sulfonation para-ester and mechanical impurity wherein to obtain dilute sulphuric acid and dilute hydrochloric acid.
The invention has the beneficial effects as follows: relative to prior art, the waste water that sulfonation para-ester produces is turned waste into wealth by the present invention, DYE PRODUCTION line is goed deep into again after wastewater treatment, owing to producing Reactive dye red M-3BE, both acid was needed, also need para-ester simultaneously, the existence of sulfonation para-ester is returned and is caused coloured light partially red, so not only to the quality ensureing dyestuff commodity, and the spent acid extracted in waste water is used for the production of active KN-B, suitably can reduce the charging capacity of para-ester, reach energy-saving and cost-reducing, the object reduced costs.
Embodiment
The invention discloses a kind of waste acidity recovery method that sulfonation para-ester produces, it comprises the following steps: step one, collect the waste water that sulfonation para-ester produces, containing para-ester, sulfonation para-ester, two sulfonation para-ester, dilute acid, dilute hydrochloric acid and mechanical impurity in the waste water that sulfonation para-ester produces; Step 2, by the waste water that sulfonation para-ester produces, through settling process recovery sulfonation para-ester wherein, the process of sedimentation is the waste water that sulfonation para-ester produces is put into three grades of settling bowls carry out sedimentation, again the residue waste water solution after recovery is obtained dilute sulphuric acid and dilute hydrochloric acid through decoloring reaction removing para-ester, two sulfonation para-ester and mechanical impurity wherein, decoloring reaction obtains process and residue waste water solution is put into decolouring still, add the gac of volume 1%, pull an oar 30 minutes, through pressure filter press filtration, collect dilute sulphuric acid and dilute hydrochloric acid.
Step 3, analyzes amino value and the acidity of dilute sulphuric acid and dilute hydrochloric acid, the sulfonation para-ester of recovery, dilute sulphuric acid and dilute hydrochloric acid is sent in temporary storage tank, finally sends into reactive dyestuffs KN-B production line.
Claims (2)
1. the waste acidity recovery method of a sulfonation para-ester generation, it is characterized in that: said method comprising the steps of: step one, collect the waste water that sulfonation para-ester produces, containing para-ester, sulfonation para-ester, two sulfonation para-ester, dilute acid, dilute hydrochloric acid and mechanical impurity in the waste water that sulfonation para-ester produces;
Step 2, by the waste water that sulfonation para-ester produces, through settling process recovery sulfonation para-ester wherein, then obtains dilute sulphuric acid and dilute hydrochloric acid by the residue waste water solution after reclaiming through decoloring reaction removing para-ester, two sulfonation para-ester and mechanical impurity wherein;
Step 3, analyzes amino value and the acidity of dilute sulphuric acid and dilute hydrochloric acid, the sulfonation para-ester of recovery, dilute sulphuric acid and dilute hydrochloric acid is sent in temporary storage tank, finally sends into reactive dyestuffs KN-B production line.
2. the waste acidity recovery method of sulfonation para-ester generation according to claim 1, it is characterized in that: the process of sedimentation in described step 2 is the waste water that sulfonation para-ester produces is put into three grades of settling bowls carry out sedimentation, decoloring reaction is adopted to obtain process for residue waste water solution being put into decolouring still, add the gac of volume 1%, pull an oar 30 minutes, through pressure filter press filtration, collect dilute sulphuric acid and dilute hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310597882.XA CN104649461A (en) | 2013-11-22 | 2013-11-22 | Recovery method of waste acid generated from sulfonated para-ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310597882.XA CN104649461A (en) | 2013-11-22 | 2013-11-22 | Recovery method of waste acid generated from sulfonated para-ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104649461A true CN104649461A (en) | 2015-05-27 |
Family
ID=53241173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310597882.XA Pending CN104649461A (en) | 2013-11-22 | 2013-11-22 | Recovery method of waste acid generated from sulfonated para-ester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104649461A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107522336A (en) * | 2017-09-08 | 2017-12-29 | 江苏明盛化工有限公司 | The processing method of caused acid waste water in a kind of contraposition ester production process |
-
2013
- 2013-11-22 CN CN201310597882.XA patent/CN104649461A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107522336A (en) * | 2017-09-08 | 2017-12-29 | 江苏明盛化工有限公司 | The processing method of caused acid waste water in a kind of contraposition ester production process |
| CN107522336B (en) * | 2017-09-08 | 2020-12-15 | 江苏明盛化工有限公司 | Method for treating acidic wastewater generated in para-ester production process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |