CN204224493U - A kind of alcohol recovering device for alpha.-acetylacetanilide synthesis - Google Patents
A kind of alcohol recovering device for alpha.-acetylacetanilide synthesis Download PDFInfo
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- CN204224493U CN204224493U CN201420610977.0U CN201420610977U CN204224493U CN 204224493 U CN204224493 U CN 204224493U CN 201420610977 U CN201420610977 U CN 201420610977U CN 204224493 U CN204224493 U CN 204224493U
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Abstract
Basis is novel relates to a kind of retrieving arrangement, specifically, relates to the ethanol recycle device in the waste gas and wastes after a kind of synthesis of alpha.-acetylacetanilide.Described retrieving arrangement comprises nitrogen gas generator, nitrogen heating unit, flash distillation main frame, induced draft fan, spray column, gas blower and connects the pipeline of described parts, nitrogen gas generator is connected with nitrogen heating unit, nitrogen heater is connected with flash distillation main frame by pipeline, flash distillation main frame is connected with spray column by pipeline, spray column is provided with the condensation cycle system for reclaiming ethanol, the top of spray column is provided with gas blower, gas in spray column is introduced nitrogen heating unit by pipeline by gas blower again, forms a closed circulation and stress device.Form respectively nitrogen circulation and ethanol circulation in this novel retrieving arrangement, constantly repeating in process, reaching the object reclaiming ethanol.
Description
Technical field
Basis is novel relates to a kind of retrieving arrangement, specifically, relates to the ethanol recycle device after alpha.-acetylacetanilide synthesis.
Background technology
The reaction medium of alpha.-acetylacetanilide product is ethanol, after product solid-liquid separation, ethanol still containing about 8% in solid matter, in order to ethanol is reclaimed, need to reclaim vaporing away ethanol condensation in drying process, but the temperature of solid matter is 40 DEG C, and exhausted air quantity is very large, and traditional condenser cannot realize.
Also disclose the patent that some ethanol reclaims in prior art, such as patent ZL200810060420.3 discloses a kind of method reclaiming ethanol in medicine residue, and it is also mainly the recovery of ethanol in solid matter.The steps include: first Dry recovery, then hydrometallurgic recovery.The step of Dry recovery is: open the steam valve passed in extractor, directly passes into steam and carries out steam distillation recovery ethanol, distillate ethanol and enter basin through cooling system bottom the dregs of a decoction; Alcohol concn to be distillated is for after being equal to or slightly lower than (about ten percentage points) extraction alcohol concn used; Stop heating.The step of hydrometallurgic recovery is: from adding the steam condensate of tap water or 50-80 DEG C bottom extractor to submergence dregs of a decoction surface, open towards the steam valve in chuck, adopt periphery to heat and keep boiling to carry out residue ethanol and reclaim, reclaim under normal pressure or micro-vacuum condition, distillate ethanol and enter basin through cooling system; When distillating alcohol concn and being 2-10%, stop heating, reclaim ethanol and terminate.Need Dry recovery and hydrometallurgic recovery two steps to carry out in this patent, and its step is complicated, the ethanol obtained also need further rectification process.
For this reason, special proposition is originally novel.
Utility model content
This novel object is the retrieving arrangement of the ethanol proposing a kind of synthesis for alpha.-acetylacetanilide.
In order to realize this novel object, the technical scheme of employing is:
This novel alcohol recovering device relating to a kind of synthesis for alpha.-acetylacetanilide, described retrieving arrangement comprises nitrogen gas generator 1, nitrogen heating unit 2, flash distillation main frame 3, induced draft fan 5, spray column 6, gas blower 7, and connect the pipeline of described parts, nitrogen gas generator 1 is connected with nitrogen heating unit 2, nitrogen heater 2 is connected with flash distillation main frame 3 by pipeline, flash distillation main frame 3 is connected with spray column 5 by pipeline, spray column is provided with the condensation cycle system for reclaiming ethanol, the top of spray column is provided with gas blower 6, gas in spray column is introduced nitrogen heating unit 2 by pipeline by gas blower 6 again, form a closed circulation and stress device.
Wherein, condensation cycle system for reclaiming ethanol comprises pump 8 for feed liquid being pumped into spray column top, condenser 9 and connects the pipeline of described parts, described pump 8 is arranged at bottom spray column, the pipeline be connected with pump outlet is provided with condenser 9, is then connected with the entrance that spray column is arranged by pipeline and extend into spray column inside; The entrance that spray column is arranged is two, lays respectively at middle part and the top of spray column; The pipeline be connected with pump outlet is first connected with an alcohol recovering device 10 and connects condenser again; The pipeline entering the inside of spray column is provided with spray nozzle 11.
Preferred further, be provided with deep bed filter 4 between flash distillation main frame and spray column; Induced draft fan 5 is provided with between deep bed filter and spray column; The side of described flash distillation main frame is connected with the feeder 12 adding wet stock.
Below this novel content is made further explanation.
Alcohol recovering device of the present invention adopts using nitrogen gas to seal off circulation, and by volatilizing to ethanol to the heating and cooling of air-flow, condensation reclaims.This novel middle employing nitrogen gas generator produces nitrogen, and carries out drying by nitrogen heater to nitrogen, and after dry, hot gas carries out drying to the wet stock in flash distillation main frame, and nitrogen enters spray column together with by the ethanol volatilized in material by induced draft fan.Before entering spray column, by being arranged at the deep bed filter before spray column, cross the solid matter filtered in gas.Spray column is connected with the condensation cycle system for reclaiming ethanol.
The middle and lower part of spray column is connected with pump by pipeline, fluent meterial in spray column is passed through pipeline pump to the middle and upper part in spray column by pump, and sprayed by spray nozzle, enter before spray column first through condenser, the liquid cooling pumped in tower is cooled to 7 DEG C by condenser, thus make gas be in hypersaturated state, make the condensation of part ethanol.And the entrance that the mixed gas of the ethanol of heat and nitrogen is introduced spray column by induced draft fan is the middle part in spray column, thus make spray enter cryogenic liquid in tower further by the ethanol of heat and nitrogen mixed gas cooling, make ethanol condensation.The entrance that spray column is arranged is two, lays respectively at middle part and the top of spray column; To increase the effect of spraying cooling.The pipeline be connected with pump outlet is first connected with an alcohol recovering device, this alcohol recovering device adopts and automatically controls, when liquid bottom spray column is more, just reclaim a part of liquid by alcohol recovering device, remaining liquid is circulated in spray column by pump again, for cooling the high-temperature gas entered.And the nitrogen that can not be condensed is introduced in nitrogen heating unit by the gas blower arranged at spray column top again, thus in the retrieving arrangement that this is novel, form respectively nitrogen circulation and ethanol circulation, constantly repeating in process, reaching the object reclaiming ethanol.
Accompanying drawing explanation
Fig. 1 is: the schematic diagram of the alcohol recovering device of embodiment 1.
This novel embodiment only makes further explanation this novel content, does not limit the content that this is novel.
Embodiment
Embodiment 1:
A kind of alcohol recovering device of the synthesis for alpha.-acetylacetanilide, retrieving arrangement comprises nitrogen gas generator 1, nitrogen heating unit 2, flash distillation main frame 3, induced draft fan 5, spray column 6, gas blower 7, and connect the pipeline of described parts, nitrogen gas generator 1 is connected with nitrogen heating unit 2, nitrogen heater 2 is connected with flash distillation main frame 3 by pipeline, flash distillation main frame 3 is connected with spray column 6 by pipeline, spray column is provided with the condensation cycle system for reclaiming ethanol, the top of spray column is provided with gas blower 7, gas in spray column is introduced nitrogen heating unit 2 by pipeline by gas blower 7 again, form a closed recycle system.Condensation cycle system for reclaiming ethanol comprises pump 8 for feed liquid being pumped into spray column top, condenser 9 and connects the pipeline of described parts, described pump is arranged at bottom spray column, the pipeline be connected with pump outlet is provided with alcohol recovering device 10 and condenser successively, is then connected with the entrance that spray column is arranged by pipeline and extend into spray column inside; The entrance that spray column is arranged is two, lays respectively at middle part and the top of spray column, and the pipeline entering the inside of spray column is provided with spray nozzle 11.
Deep bed filter 4 is provided with, for crossing the solid matter filtered in gas between flash distillation main frame and spray column; Induced draft fan 5 is provided with, for being incorporated in spray column by nitrogen between deep bed filter and spray column; The side of flash distillation main frame is connected with the feeder 12 adding wet stock, for being joined in flash distillation main frame by wet stock.
This novel equipment is in use: the fluent meterial in spray column is passed through pipeline pump to the middle and upper part in spray column by the pump arranged by the middle and lower part of spray column, and sprayed by spray nozzle, the entrance that spray column is arranged is two, lays respectively at middle part and the top of spray column; To increase the effect of spraying cooling.Fluent meterial enters first through condenser before spray column, and the liquid cooling pumped in tower is cooled to 7 DEG C by condenser, thus makes gas be in hypersaturated state, makes the condensation of part ethanol.And the entrance that the mixed gas of the ethanol of heat and nitrogen is introduced spray column by induced draft fan is the middle part in spray column, thus make spray enter cryogenic liquid in tower further by the ethanol of heat and nitrogen mixed gas cooling, make ethanol condensation.The pipeline be connected with pump outlet is first connected with an alcohol recovering device, this alcohol recovering device adopts and automatically controls, when liquid bottom spray column is more, just reclaim a part of liquid by alcohol recovering device, remaining liquid is circulated in spray column by pump again, for cooling the high-temperature gas entered.And the nitrogen that can not be condensed is introduced in nitrogen heating unit by the gas blower arranged at spray column top again, thus in the retrieving arrangement that this is novel, form respectively nitrogen circulation and ethanol circulation, constantly repeating in process, reaching the object reclaiming ethanol.
Claims (8)
1. the alcohol recovering device for alpha.-acetylacetanilide synthesis, it is characterized in that, described retrieving arrangement comprises nitrogen gas generator (1), nitrogen heating unit (2), flash distillation main frame (3), induced draft fan (5), spray column (6), gas blower (7), and connect the pipeline of described parts, nitrogen gas generator is connected with nitrogen heating unit, nitrogen heater is connected with flash distillation main frame by pipeline, flash distillation main frame is connected with spray column by pipeline, spray column is provided with the condensation cycle system for reclaiming ethanol, the top of spray column is provided with gas blower, gas in spray column is introduced nitrogen heating unit by pipeline by gas blower again, form a closed circulation and stress device.
2. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 1, it is characterized in that, the described condensation cycle system for reclaiming ethanol comprises pump (8) for feed liquid being pumped into spray column top, condenser (9) and connects the pipeline of described parts, described pump is arranged at bottom spray column, the pipeline be connected with pump outlet is provided with condenser, is then connected with the entrance that spray column is arranged by pipeline and extend into spray column inside.
3. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 2, it is characterized in that, the entrance that described spray column is arranged is two, lays respectively at middle part and the top of spray column.
4. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 2, it is characterized in that, the pipeline be connected with pump outlet is first connected with an alcohol recovering device (10) and connects condenser again.
5. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 2, is characterized in that, the pipeline entering the inside of spray column is provided with spray nozzle (11).
6. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 1, is characterized in that, be provided with deep bed filter (4) between described flash distillation main frame and spray column.
7. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 6, is characterized in that, be provided with induced draft fan (5) between deep bed filter and spray column.
8. the alcohol recovering device for alpha.-acetylacetanilide synthesis according to claim 1, is characterized in that, the side of described flash distillation main frame is connected with the feeder (12) adding wet stock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610977.0U CN204224493U (en) | 2014-10-21 | 2014-10-21 | A kind of alcohol recovering device for alpha.-acetylacetanilide synthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610977.0U CN204224493U (en) | 2014-10-21 | 2014-10-21 | A kind of alcohol recovering device for alpha.-acetylacetanilide synthesis |
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| CN204224493U true CN204224493U (en) | 2015-03-25 |
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| CN201420610977.0U Active CN204224493U (en) | 2014-10-21 | 2014-10-21 | A kind of alcohol recovering device for alpha.-acetylacetanilide synthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023787A (en) * | 2018-10-09 | 2020-04-17 | 广东环葆嘉节能科技有限公司 | Hot air drying system |
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2014
- 2014-10-21 CN CN201420610977.0U patent/CN204224493U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023787A (en) * | 2018-10-09 | 2020-04-17 | 广东环葆嘉节能科技有限公司 | Hot air drying system |
| CN111023787B (en) * | 2018-10-09 | 2023-08-25 | 广东环葆嘉节能科技有限公司 | Hot air drying system |
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Address after: 266031 Yichang Road, Shibei District, Qingdao, Shandong 31 Patentee after: Qingdao Bay Fine Chemical Co., Ltd. Address before: 266031 Yichang Road, Shibei District, Qingdao, Shandong 31 Patentee before: Qingdao Double-Peach Speciality Chemicals Group Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |