CN204529333U - For the ammonia recovery system that PHBA produces - Google Patents
For the ammonia recovery system that PHBA produces Download PDFInfo
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- CN204529333U CN204529333U CN201520206092.9U CN201520206092U CN204529333U CN 204529333 U CN204529333 U CN 204529333U CN 201520206092 U CN201520206092 U CN 201520206092U CN 204529333 U CN204529333 U CN 204529333U
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Abstract
The utility model discloses a kind of ammonia recovery system produced for PHBA, belong to medication chemistry apparatus field, comprise dry vacuum extraction unit, described dry vacuum extraction unit comprises main pump and forepump, prime pump outlet is connected with gas-holder, gas-holder is connected with the first packed absorber, first packed absorber connects interchanger, the dense ammonia tank of connection of described interchanger, also comprise the second packed absorber and rare ammonia tank, the utility model adopts dry vacuum extraction unit, gas-holder, blower fan, interchanger, the combined system of packed absorber reclaims the ammonia in product water solution, directly obtain the strong aqua that can for recycle, a large amount of energy need not be consumed again desorb is carried out to weak ammonia, decrease facility investment and process cost, cost recovery is low, compare traditional way of recycling, cost recovery reduces by more than 40%, significantly improve economic benefit, greatly reduce environmental pollution simultaneously.
Description
Technical field
The utility model belongs to medication chemistry apparatus field, is specifically related to a kind of ammonia recovery system produced for PHBA.
Background technology
Amikacin is the semi-synthetic aminoglycoside antibiotics of the third generation, to S. aureus L-forms, Pseudomonas aeruginosa, intestinal bacteria and Bacillus proteus etc. according to there being stronger pharmacological action, having again the advantages such as low ototoxicity, low renal toxicity, is one of microbiotic of China's wide clinical application.(S)-Alpha-hydroxy-γ-N-phthaloylamino butyric acid (being called for short PHBA) is the important intermediate of synthetic drugs amikacin, in PHBA production technique, gamma-butyrolactone ammonia solution and alkali displacement operation need to use a large amount of ammoniacal liquor, the ammonia that wherein participation chemical reaction is consumed only accounts for 10%, and all the other ammonia of 90% are present among product water solution.Recycle the ammonia having neither part nor lot in reaction significant for reduction production cost, minimizing environmental pollution.Due to the restriction of processing condition, the ammonia in product water solution can only be removed at low temperatures, traditional technology be by high vacuum extracting by containing ammonia product water solution in ammonia separation out.But the vacuum system that traditional technology uses is based on the wet vacuum pump such as water-circulation type, jet-type, and the ammonia of extracting is mixed in the water as working medium and forms a large amount of weak ammonia.Weak ammonia cannot recycle, and in absorption tower, absorb into strong aqua recycle again after can only being resolved by weak ammonia by desorption tower, the cost reclaiming ammonia is very high, and energy consumption is high, causes environmental pollution simultaneously.
Summary of the invention
Goal of the invention of the present utility model is: for above-mentioned Problems existing, provides that a kind of facility investment is few, cost recovery is low, energy consumption is low, ammonia recovery system under the simple low temperature of technique, to solve the problem.
The technical solution adopted in the utility model is such: a kind of ammonia recovery system produced for PHBA, comprise dry vacuum extraction unit, the forepump that described dry vacuum extraction unit is comprised main pump and is connected by pipeline with described main pump, described prime pump outlet is connected with gas-holder by pipeline, the outlet of described gas-holder is connected with the first packed absorber by pipeline, blower fan is provided with between described gas-holder and described first packed absorber, the lower end outlet of described first packed absorber connects interchanger, the outlet of described interchanger connects dense ammonia tank, the outlet of described dense ammonia tank is connected with the first pump, described first pump outlet is connected by the top of pipeline with the first packed absorber, the top exit of described first packed absorber is connected with the second packed absorber by pipeline, the outlet at bottom of described second packed absorber is connected with rare ammonia tank, described rare ammonia tank outlet is connected with the second pump, described second pump outlet is connected by the top of pipeline with the second packed absorber, the top exit of described second packed absorber is provided with tail gas blow-down pipe.
Technique scheme utilizes dry vacuum extracting to carry out low temperature extracting to the product water solution after gamma-butyrolactone ammonia solution, the ammonia extracted out enters gas-holder, adjustment blower fan air output ensures gas-holder tiny structure and the suitable blast of packing tower, ammonia in gas-holder is extracted out, send into the first packed absorber, in the first packed absorber, ammonia moves from bottom to top, filling surface with to spray from the first packing material absorbing column overhead and absorption liquid counter current contact, the ammonia of more than 90% is absorbed into ammoniacal liquor; Absorb liberated heat removed by interchanger, cooled ammoniacal liquor enter dense ammonia tank again through the first pump delivery to packing tower cyclic absorption, until the ammonia concn in dense ammonia tank reaches the processing requirement meeting gamma-butyrolactone ammonia solution, then be pumped into workshop use.The ammonia that first packed absorber has not absorbed out enters the second packed absorber lower gas entrance afterwards from tower top, under blast promotes to tower top rise and filling surface with to spray from the second packing material absorbing column overhead and absorption liquid counter current contact, rare ammonia tank is entered after the ammonia of more than 99.5% is absorbed into ammoniacal liquor, then through the second pump delivery to packing tower cyclic absorption.The absorption liquid of dense ammonia tank supplements from rare ammonia tank, and the absorption liquid tap water of rare ammonia tank supplements.
As preferred technical scheme: described main pump is Roots vaccum pump, and be provided with two Roots vaccum pumps, comprise one-level Roots vaccum pump and secondary Roots vaccum pump.
As further preferred technical scheme: be also provided with interchanger between described secondary Roots vaccum pump and described forepump.Due to the gas meeting raised temperature volumetric expansion after Roots vaccum pump compression, increase main pump load, in order to address this problem, so set up interchanger in lobe pump outlet.
The preferred spiral-plate exchanger of above-mentioned interchanger, forepump preferably without oily reciprocating pump or dry screw vacuum pump, the preferred roots blower of blower fan.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are: the utility model adopts dry vacuum extraction unit, gas-holder, blower fan, interchanger, the combined system of packed absorber reclaims the ammonia in product water solution, directly obtain the strong aqua that can for recycle, a large amount of energy need not be consumed again desorb is carried out to weak ammonia, decrease facility investment and process cost, cost recovery is low, compare traditional way of recycling, cost recovery reduces by more than 40%, significantly improve economic benefit, greatly reduce environmental pollution simultaneously.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model embodiment;
In figure, 1 is one-level Roots vaccum pump, and 2 is secondary Roots vaccum pump, and 3 is the first spiral-plate exchanger, 4 is without oily reciprocating pump, 5 is gas-holder, and 6 is roots blower, and 7 is the first packed absorber, 8 is secondary spiral lamina formula interchanger, 9 is dense ammonia tank, and 10 is the second packed absorber, and 11 is rare ammonia tank.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment
As shown in Figure 1, in figure, the direction of arrow is liquid/gas flow direction, a kind of ammonia recovery system produced for PHBA, comprise dry vacuum extraction unit, the forepump that described dry vacuum extraction unit is comprised main pump and is connected by pipeline with described main pump, described main pump is Roots vaccum pump, and be provided with two Roots vaccum pumps, comprise one-level Roots vaccum pump 1 and secondary Roots vaccum pump 2, described forepump is without oily reciprocating pump 4, secondary Roots vaccum pump 2 and institute are without being also provided with the first spiral-plate exchanger 3 between oily reciprocating pump 4, pipeline between secondary Roots vaccum pump 2 and the first spiral-plate exchanger 3 is provided with check valve, outlet without oily reciprocating pump 4 is connected with gas-holder 5 by pipeline, also check valve is provided with without on the pipeline between oily reciprocating pump 4 and gas-holder 5, the outlet of gas-holder 5 is connected with the first packed absorber 7 by pipeline, roots blower 6 is provided with between gas-holder 5 and the first packed absorber 7, the lower end outlet of the first packed absorber 7 connects secondary spiral lamina formula interchanger 8, the outlet of secondary spiral lamina formula interchanger 8 connects dense ammonia tank 9, the outlet of dense ammonia tank 9 is connected with the first pump, described first pump outlet is connected by the top of pipeline with the first packed absorber 7, the top exit of the first packed absorber 7 is connected with the second packed absorber 10 by pipeline, the outlet at bottom of the second packed absorber 10 is connected with rare ammonia tank 11, rare ammonia tank 11 outlet is connected with the second pump, described second pump outlet is connected by the top of pipeline with the second packed absorber 10, the top exit of the second packed absorber 10 is provided with tail gas blow-down pipe.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the ammonia recovery system produced for PHBA, it is characterized in that: comprise dry vacuum extraction unit, the forepump that described dry vacuum extraction unit is comprised main pump and is connected by pipeline with described main pump, described prime pump outlet is connected with gas-holder by pipeline, the outlet of described gas-holder is connected with the first packed absorber by pipeline, blower fan is provided with between described gas-holder and described first packed absorber, the lower end outlet of described first packed absorber connects interchanger, the outlet of described interchanger connects dense ammonia tank, the outlet of described dense ammonia tank is connected with the first pump, described first pump outlet is connected by the top of pipeline with the first packed absorber, the top exit of described first packed absorber is connected with the second packed absorber by pipeline, the outlet at bottom of described second packed absorber is connected with rare ammonia tank, described rare ammonia tank outlet is connected with the second pump, described second pump outlet is connected by the top of pipeline with the second packed absorber, the top exit of described second packed absorber is provided with tail gas blow-down pipe.
2. the ammonia recovery system produced for PHBA according to claim 1, is characterized in that: described main pump is Roots vaccum pump, and is provided with two-stage Roots vaccum pump, comprise one-level Roots vaccum pump and secondary Roots vaccum pump.
3. the ammonia recovery system produced for PHBA according to claim 2, is characterized in that: be also provided with interchanger between described secondary Roots vaccum pump and described forepump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206092.9U CN204529333U (en) | 2015-04-08 | 2015-04-08 | For the ammonia recovery system that PHBA produces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206092.9U CN204529333U (en) | 2015-04-08 | 2015-04-08 | For the ammonia recovery system that PHBA produces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204529333U true CN204529333U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520206092.9U Withdrawn - After Issue CN204529333U (en) | 2015-04-08 | 2015-04-08 | For the ammonia recovery system that PHBA produces |
Country Status (1)
| Country | Link |
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| CN (1) | CN204529333U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787779A (en) * | 2015-04-08 | 2015-07-22 | 成都丽凯手性技术有限公司 | Ammonia recovery system and method for PHBA (para hydroxy benzoic acid) production |
| CN107601552A (en) * | 2017-10-31 | 2018-01-19 | 四川锌鸿科技有限公司 | One kind inhales ammonia device |
-
2015
- 2015-04-08 CN CN201520206092.9U patent/CN204529333U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787779A (en) * | 2015-04-08 | 2015-07-22 | 成都丽凯手性技术有限公司 | Ammonia recovery system and method for PHBA (para hydroxy benzoic acid) production |
| CN104787779B (en) * | 2015-04-08 | 2016-09-21 | 成都丽凯手性技术有限公司 | The ammonia recovery system produced for PHBA and recovery method |
| CN107601552A (en) * | 2017-10-31 | 2018-01-19 | 四川锌鸿科技有限公司 | One kind inhales ammonia device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150805 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |