CN100519446C - H acid waste water by natrium chloratum addition process - Google Patents
H acid waste water by natrium chloratum addition process Download PDFInfo
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- CN100519446C CN100519446C CNB2007100516227A CN200710051622A CN100519446C CN 100519446 C CN100519446 C CN 100519446C CN B2007100516227 A CNB2007100516227 A CN B2007100516227A CN 200710051622 A CN200710051622 A CN 200710051622A CN 100519446 C CN100519446 C CN 100519446C
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- acid
- waste water
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- sodium
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Abstract
The invention discloses a disposing method of making H acid waste water reach zero discharge, which comprises the following steps: adding common salt into waste water; distilling out of alcaine; extracting out of H acid and T acid from the remain solid; heating the solid; getting ammonii chloridum; pyrogenic oxidizing remain solid; getting anhydrous sodium sulfate.
Description
Technical field
The present invention relates to a kind of H acid waste water that can make and reach the treatment process of zero release.
Background technology
H acid is important dyestuff intermediate, is mainly used in to produce substantive dyestuff, matching stain, reactive dyestuffs.The H acid producing waste water has very big toxicity to environment, is difficult to biological treatment, endangers quite big.
In the H acid production process,, often regulate lower pH value, make the acidity that the H acid producing waste water is has root strong building to be had severe corrosive, need a large amount of water to be diluted during discharging, extremely waste resource in order to improve the yield of H acid.
Summary of the invention
Major ingredient in the H acid waste water is: sulfuric acid, ammonium sulfate, sodium sulfate, H acid, T acid and organic impurity.
Composition according in the H acid waste water adds sodium-chlor to a certain degree, introduces an amount of chlorion, changes the Chemical Composition in the waste water.Distillation then because hydrogen ion and chlorion institute bonded hydrochloric acid volatility are higher, take the lead in distilling from waste water and, and obtains pure transparent hydrochloric acid soln.After extracting H acid and T acid, the solid that heating is remaining, ammonium ion and chlorion are combined into ammonium chloride and evaporate, and remaining solid obtains anhydrous sodium sulphate through behind the high temperature oxidation.
The mole number sum of hydrogen ion and ammonium ion equates in the mole number that adds sodium-chlor and the waste water.
The extraction liquid of H acid and T acid can be methyl alcohol, also can be alkaline organic solution, evaporate organic extract liquid after, just can get the crude product of the sour and T acid of H.
Because the restriction of fund also can save extraction step, after heat solid obtained ammonium chloride, directly high temperature oxidation obtained anhydrous sodium sulphate.
The ammonium chloride that reclaims can be used for fertilizer.
Pyritous sodium sulfate can be used for making water glass.
The temperature range of heating ammonium chloride is: 110 degrees centigrade to 500 degrees centigrade.
The temperature range of high temperature oxidation anhydrous sodium sulphate is: 500 degrees centigrade to 1000 degrees centigrade.
The entire treatment method, each step can reclaim industrial goods, realized pollution-free, zero release.
Advantageous effect
1, realized the zero release of H acid wastewater treatment, thoroughly realized pollution-free.
2, from waste water, reclaimed hydrochloric acid.
3, from waste water, reclaimed ammonium chloride.
4, H acid and T acid from waste water, have been reclaimed.
Description of drawings
Fig. 1 is the whole flow process of H acid wastewater treatment.
Realize concrete mode of the present invention
Embodiment 1: get Chu Yuan chemical plant, Shishou City, Hubei Province H acid waste water 100mL, add sodium-chlor 11 grams, make its dissolving, distillation, obtain hydrochloric acid 96mL, use the remaining solid of methyl alcohol ultrasonic extraction, obtain H acid and T acid 1 gram, solid obtained ammonium chloride 1.5 grams after 400 degree added extraction heat, obtained anhydrous sodium sulphate 7 grams behind the 950 degree high temperature oxidations.
Embodiment 2: be to get Chu Yuan chemical plant, Shishou City, Hubei Province H acid waste water 100mL equally, add sodium-chlor 11 grams, make its dissolving, distillation obtains hydrochloric acid, different is with the solid soxhlet extraction, obtains H acid 1.7 grams, illustrates that the Soxhlet cycling extraction can improve the yield of H acid and T acid.
Embodiment 3: be to get Chu Yuan chemical plant, Shishou City, Hubei Province H acid waste water 100mL equally, add sodium-chlor 11 grams, make its dissolving, distillation obtains hydrochloric acid, directly obtain ammonium chloride 1.7 grams without extraction then, obtain anhydrous sodium sulphate 7 grams behind the high temperature oxidation in 400 degree heating.Illustrate and save the yield that extraction does not influence ammonium chloride and anhydrous sodium sulphate.
Claims (1)
1, the present invention relates to a kind of H acid waste water that can make and reach the treatment process of zero release, it is characterized in that comprising the steps:
1) add sodium-chlor in waste water, change the waste water component, the mole number sum of hydrogen ion and ammonium ion equates in the mole number that adds sodium-chlor and the waste water;
2) waste water that will add behind the sodium-chlor distills, and steams hydrochloric acid wherein;
3) go out H acid and T acid in the remaining solid with methanol extraction;
4) solid after the reheat extraction obtains ammonium chloride;
5) the remaining solid of oxidation obtains anhydrous sodium sulphate under 500 ℃ to 1000 ℃ temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100516227A CN100519446C (en) | 2007-03-07 | 2007-03-07 | H acid waste water by natrium chloratum addition process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100516227A CN100519446C (en) | 2007-03-07 | 2007-03-07 | H acid waste water by natrium chloratum addition process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101041521A CN101041521A (en) | 2007-09-26 |
| CN100519446C true CN100519446C (en) | 2009-07-29 |
Family
ID=38807347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100516227A Expired - Fee Related CN100519446C (en) | 2007-03-07 | 2007-03-07 | H acid waste water by natrium chloratum addition process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100519446C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066824B (en) * | 2007-06-14 | 2010-10-27 | 南开大学 | Process of treating and reusing effluent from 1-amino-8-naphthol-3, 6-disulfonic acid production |
| CN102775808B (en) * | 2012-08-23 | 2013-08-21 | 楚源高新科技集团股份有限公司 | Process for recycling ammonium sulfate and synthesizing acidic dye by T-acid mother liquor wastewater |
| CN113087249B (en) * | 2019-12-23 | 2022-04-22 | 南京延长反应技术研究院有限公司 | System and method for treating wastewater in H acid production |
-
2007
- 2007-03-07 CN CNB2007100516227A patent/CN100519446C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 络合萃取法处理高浓度H酸废水. 金晓红，王云祥，孙向东.江苏环境科技，第14卷第2期. 2001 |
| 络合萃取法处理高浓度H酸废水. 金晓红，王云祥，孙向东.江苏环境科技，第14卷第2期. 2001 * |
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| Publication number | Publication date |
|---|---|
| CN101041521A (en) | 2007-09-26 |
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Granted publication date: 20090729 Termination date: 20110307 |