CN102816047B - Technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol - Google Patents
Technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol Download PDFInfo
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- CN102816047B CN102816047B CN201210278422.6A CN201210278422A CN102816047B CN 102816047 B CN102816047 B CN 102816047B CN 201210278422 A CN201210278422 A CN 201210278422A CN 102816047 B CN102816047 B CN 102816047B
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- tetramethylpiperidinol
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Abstract
The invention discloses a technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol. The technology comprises an adsorption stage and an elution stage. The technology is characterized in that in the adsorption stage, an ammoniacal smell ethanol mixed solution enters into a highly acidic ion exchange resin fixed bed at a flow rate of 1 to 1.5L/min and liquid ammonia is adsorbed by a highly acidic ion exchange resin and eluate is a qualified ethanol solution; and in the elution stage, after adsorbed ammonia is saturated, the adsorbed ammonia is eluted from the highly acidic ion exchange resin fixed bed by a hydrochloric acid solution at a flow rate of 0.3L/min and liquid ammonia is recovered. The technology provided by the invention utilizes the highly acidic ion exchange resin fixed bed to treat ammonia in ethanol, replaces the existing neutralization ammonia-removal method, has simple processes, is convenient for operation and reduces energy consumption.
Description
Technical field
The present invention relates to a kind of ammonia-removal process, particularly the ammonia-removal process of ammonia taste ethanol in a kind of tetramethylpiperidinol.
Background technology
In tetramethylpiperidinol production process, its solvent comprises ethanol and a small amount of ammonia, and ammonia solution corrosive equipment, has impact to subsequent reactions simultaneously.Therefore, the major issue that liquefied ammonia becomes tetramethylpiperidinol production process how is removed in alcohol solvent, general, adopt chemical process process, ammonia salt is obtained through acid-base neutralisation, then through steps such as dewatering and desaltings, although can effectively remove a small amount of ammonia, but reactions steps is loaded down with trivial details, and the energy consumption that ethanol rectifying and dewatering process need is a large amount of.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, adopt the ammonia in highly acidic resin fixed bed process ethanol, the ammonia-removal process of ammonia taste ethanol in a kind of tetramethylpiperidinol is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is as follows: the ammonia-removal process of ammonia taste ethanol in a kind of tetramethylpiperidinol, comprise absorption phase and elution stage, it is characterized in that, described absorption phase is: by ammonia taste alcohol mixeding liquid with the flow velocity of 1 ~ 1.5L/min, enter strong-acid ion exchange resin ADSORPTION IN A FIXED BED, liquefied ammonia is adsorbed on resin, effluent liquid is the ethanolic soln of ammonia content 0.5 ~ 0.8%, described elution stage is: after ammonia absorption is saturated, hydrochloric acid soln is adopted to be eluted from fixed bed by ammonia with the flow velocity of 0.3L/min, liquid ammonia recovery.
Preferably, described ammonia taste alcohol mixeding liquid, ammonia content is 5%.
The invention has the advantages that: adopt the ammonia in highly acidic resin fixed bed process ethanol, replace utilizing chemical neutralization method process ammonia, the method is simple, easy to operate, energy-saving and cost-reducing.
Embodiment
Embodiment 1
A, absorption phase: by ammonia taste alcohol mixeding liquid, enter highly acidic resin ADSORPTION IN A FIXED BED with the flow velocity of 1 L/min, liquid
Ammonia is adsorbed onto on resin, and absorption effluent liquid is qualified ethanolic soln, will be 0.5% by ammonia amount from 5%;
B, elution stage: after ammonia absorption is saturated, adopt hydrochloric acid soln to be eluted from fixed bed by ammonia with the flow velocity of 0.3L/min, liquid ammonia recovery.
Embodiment 2
A, absorption phase: by ammonia taste alcohol mixeding liquid, enter highly acidic resin ADSORPTION IN A FIXED BED with the flow velocity of 1.5 L/min, liquid
Ammonia is adsorbed onto on resin, and absorption effluent liquid is qualified ethanolic soln, will be 0.8% by ammonia amount from 5%;
Elution stage: after ammonia absorption is saturated, adopts hydrochloric acid soln to be eluted from fixed bed by ammonia with the flow velocity of 0.3L/min, liquid ammonia recovery.
Claims (2)
1. the ammonia-removal process of ammonia taste ethanol in a tetramethylpiperidinol, comprise absorption phase and elution stage, it is characterized in that, described absorption phase is: by ammonia taste alcohol mixeding liquid with the flow velocity of 1 ~ 1.5L/min, enter strong-acid ion exchange resin ADSORPTION IN A FIXED BED, liquefied ammonia is adsorbed on resin, effluent liquid is the ethanolic soln of ammonia content 0.5 ~ 0.8%, described elution stage is: after ammonia absorption is saturated, hydrochloric acid soln is adopted to be eluted from fixed bed by ammonia with the flow velocity of 0.3L/min, liquid ammonia recovery.
2. the ammonia-removal process of ammonia taste ethanol in a kind of tetramethylpiperidinol according to claim 1, is characterized in that: described ammonia taste alcohol mixeding liquid, ammonia content is 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278422.6A CN102816047B (en) | 2012-08-07 | 2012-08-07 | Technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210278422.6A CN102816047B (en) | 2012-08-07 | 2012-08-07 | Technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol |
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| Publication Number | Publication Date |
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| CN102816047A CN102816047A (en) | 2012-12-12 |
| CN102816047B true CN102816047B (en) | 2014-12-24 |
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| CN201210278422.6A Active CN102816047B (en) | 2012-08-07 | 2012-08-07 | Technology for removing ammonia in ammoniacal smell ethanol in tetramethylpiperidinol |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102499083B1 (en) * | 2017-11-13 | 2023-02-14 | 주식회사 엘지화학 | Method for purifying waste ethanol |
| CN109053374B (en) * | 2018-06-20 | 2021-09-14 | 响水华夏特材科技发展有限公司 | Ammonia removal process for ammonia-containing ethanol in aerogel production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101146A (en) * | 1985-04-01 | 1987-01-17 | 三菱金属株式会社 | Processing contains the method for ammonium and fluorium ion liquid |
| WO2002079087A1 (en) * | 2001-03-29 | 2002-10-10 | Kemira Chemicals Oy | Recovery of ammonium nitrogen from wastewater |
| US20030215377A1 (en) * | 1997-03-31 | 2003-11-20 | Blonigen Scott J. | Apparatus and method for ammonia removal from waste streams |
| CN101497554A (en) * | 2008-01-25 | 2009-08-05 | 气体产品与化学公司 | Method for removing ammonia from a methanol containing stream |
-
2012
- 2012-08-07 CN CN201210278422.6A patent/CN102816047B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101146A (en) * | 1985-04-01 | 1987-01-17 | 三菱金属株式会社 | Processing contains the method for ammonium and fluorium ion liquid |
| US20030215377A1 (en) * | 1997-03-31 | 2003-11-20 | Blonigen Scott J. | Apparatus and method for ammonia removal from waste streams |
| WO2002079087A1 (en) * | 2001-03-29 | 2002-10-10 | Kemira Chemicals Oy | Recovery of ammonium nitrogen from wastewater |
| CN101497554A (en) * | 2008-01-25 | 2009-08-05 | 气体产品与化学公司 | Method for removing ammonia from a methanol containing stream |
Non-Patent Citations (2)
| Title |
|---|
| 2,2’,6,6’-四甲基哌啶酮生产工艺的改造和优化;夏跃雄等;《塑料助剂》;20061231(第5期);第46-48页 * |
| 强酸性阳离子交换树脂对焦化废水中氨氮的去除作用;刘宝敏等;《郑州工程学院学报》;20030331;第24卷(第1期);第46-49页 * |
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| CN102816047A (en) | 2012-12-12 |
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Effective date of registration: 20200707 Address after: 223800 Six Road, North District, Suqian Economic Development Zone, Jiangsu Province Patentee after: SUQIAN ZHENXING CHEMICAL Co.,Ltd. Address before: 226500, Jiangsu province Nantong Rugao evergreen Town Village neighborhood committee 13 groups Patentee before: NANTONG CITY ZHENXING FINE CHEMICAL Co.,Ltd. |
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