CN203989936U - Modified methylaniline rectifying column reflux - Google Patents
Modified methylaniline rectifying column reflux Download PDFInfo
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- CN203989936U CN203989936U CN201420397558.3U CN201420397558U CN203989936U CN 203989936 U CN203989936 U CN 203989936U CN 201420397558 U CN201420397558 U CN 201420397558U CN 203989936 U CN203989936 U CN 203989936U
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- condenser
- rectifying column
- methylaniline
- return tank
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Abstract
A kind of modified methylaniline rectifying column reflux of the present utility model, comprise rectifying column, condenser, return tank and finished product condenser, described rectifying column forms closed circuit by pipeline through condenser and return tank, described return tank is communicated with finished product condenser by pipeline, wherein, also comprise vacuum system, described return tank is communicated with vacuum system by pipeline.The methylaniline quality of finished of a kind of modified methylaniline rectifying column reflux of the present utility model rectifying is higher.
Description
Technical field
The utility model relates to a kind of rectifying column reflux, more particularly, relates in particular to a kind of modified methylaniline rectifying column reflux.
Background technology
Methylaniline needs just can make product reach certain purity through repeated multiple times rectifying in the process of producing now, level of vacuum in the distillation process of methylaniline stoste in rectifying tower system has a great impact for the quality tool of finished product, level of vacuum in rectifying tower system is high, the methylaniline quality of finished of producing is better, on the contrary, level of vacuum in rectifying tower system is low, and the methylaniline quality of finished of production is poor.The level of vacuum of traditional methylaniline stoste distillation equipment is not high, and the quality of the methylaniline finished product that rectifying goes out does not thus reach requirement.Therefore, how to improve rectifying column equipment and improve the level of vacuum in rectifying column, thereby the purity of raising methylaniline finished product becomes the new direction of development of methylaniline rectifying device.
Utility model content
The purpose of this utility model is to provide a kind of modified methylaniline rectifying column reflux, and the methylaniline quality of finished of this methylaniline destilling tower reflux rectifying is higher.
The technical solution adopted in the utility model is as follows:
A kind of modified methylaniline rectifying column reflux, comprise rectifying column, condenser, return tank and finished product condenser, described rectifying column forms closed circuit by pipeline through condenser and return tank, described return tank is communicated with finished product condenser by pipeline, wherein, also comprise vacuum system, described return tank is communicated with vacuum system by pipeline.
Further, between described return tank and finished product condenser, be provided with backflow pressue device, the water inlet of described backflow pressue device and return tank pipeline communication, the delivery port of backflow pressue device respectively with finished product condenser, rectifying column pipeline communication.
Further, described backflow pressue device comprises the first reflux pump and the second reflux pump, the first described reflux pump is connected with the second reflux pump parallel way, the water inlet of the first reflux pump and the second reflux pump and return tank pipeline communication, the delivery port branch of the first reflux pump and the second reflux pump and finished product condenser, rectifying column pipeline communication.
Further, the refrigerant entrance of described condenser connects the delivery port of the first external water circulation system, and the refrigerant exit of condenser is connected with the water inlet of a first external water circulation system.
Further, the refrigerant entrance of described finished product condenser connects the delivery port of the second external water circulation system, and the refrigerant exit of finished product condenser is connected with the water inlet of a second external water circulation system.
Further, described return tank is also provided with liquid level detection device and purity detecting device.
Further, described vacuum system comprises vacuum catcher, gas condenser and vavuum pump, and gas condenser is communicated with vavuum pump through vacuum catcher by pipeline.
Further, the refrigerant entrance of described gas condenser is connected with the delivery port of a 3rd external water circulation system, and the refrigerant exit of gas condenser connects the water inlet of the 3rd external water circulation system.
Compared with prior art, the beneficial effect the utlity model has is:
The utility model by having increased vacuum system in traditional methylaniline rectifying tower system, vacuum system comprises vacuum catcher, gas condenser and vavuum pump, further improve the negative pressure in rectifying tower system pipeline, make the better effects if of rectifying, the methylaniline quality of finished after rectifying is better.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical solution of the utility model is described in further detail, but does not form any restriction of the present utility model.
Consult described in Fig. 1, a kind of modified methylaniline rectifying column reflux of the present utility model, comprise rectifying column 1, condenser 2, return tank 3 and finished product condenser 4, described rectifying column 1 forms closed circuit by pipeline through condenser 2 and return tank 3, described return tank 3 is communicated with finished product condenser 4 by pipeline, wherein, also comprise vacuum system 5, described return tank 2 is communicated with vacuum system 5 by pipeline.Between described return tank 3 and finished product condenser 4, be provided with backflow pressue device 6, described pressue device 6 comprises the first reflux pump 7 and the second reflux pump 8, the first described reflux pump 7 is connected with the second reflux pump 8 parallel waies, the water inlet of the first reflux pump 7 and the second reflux pump 8 and return tank 3 pipeline communications, the delivery port branch of the first reflux pump 7 and the second reflux pump 8 and finished product condenser 4, rectifying column 1 pipeline communication.Connect in each pipeline of the first reflux pump 7 and the second reflux pump 8 and be provided with valve, to control the flow of liquid in pipeline.Adjacent first is the one of methylaniline, also can become methylaniline.Traditional methylaniline rectifying tower system goes out adjacent first gas in the interior rectifying of rectifying column 1 and enters condenser 2 along pipeline, in condenser 2, be cooled to gaseous state and the liquid adjacent first of mixing, gaseous state and the liquid adjacent first of mixing flow in return tank 3 along pipeline, entered that liquid first in return tank 3 is adjacent to be extracted by pressue device 6 pressurizations, select to be back to rectifying column 1 interior continue to do further rectifying or enter in finished product condenser 4, do further liquefaction processing.Just can control flow channel and the flow of the adjacent first of liquid state of extraction by regulating valve in the first reflux pump 7 and the second reflux pump 8.Pass through repeatedly the purity of the adjacent first of liquid state of rectifying and improved constantly, become methylaniline finished product until its purity reaches standard-required.
Described vacuum system 5 comprises vacuum catcher 51, gas condenser 52 and vavuum pump 53, and gas condenser 52 is communicated with vavuum pump 53 through vacuum catcher 51 by pipeline.The adjacent first of the interior gaseous state of return tank 3 enters the further condensation liquefaction processing of the interior do of gas condenser 52 by pipeline, now, enter the adjacent first of gaseous state in gas condenser 52 be liquefied after in piping is got back to return tank 3, enter some air in gaseous state condenser 52 with the adjacent first of gaseous state and enter that vacuum catcher 51 is interior to be extracted out by vavuum pump 53, further improve the negative pressure in rectifying tower system pipeline, make the better effects if of rectifying, the methylaniline quality of finished after rectifying is better.
The refrigerant entrance of described condenser 2 is connected with the delivery port of a first external water circulation system 11, the refrigerant exit of condenser 2 connects the water inlet of this first external water circulation system 11, utilize the water circulation system that external temperature is lower, reduce the temperature in container in condenser 2, make steam liquefied more abundant.
The refrigerant entrance of described finished product condenser 4 is connected with the delivery port of a second external water circulation system 12, the refrigerant exit of finished product condenser 4 connects the water inlet of this second external water circulation system 12, utilize the water circulation system that external temperature is lower, reduce the temperature in container in finished product condenser 4, make steam liquefied more abundant.
The refrigerant entrance of described gas condenser 52 is connected with the delivery port of a 3rd external water circulation system 13, the refrigerant exit of gas condenser 52 connects the water inlet of the 3rd external water circulation system 13, utilize the water circulation system that external temperature is lower, reduce the temperature in container in gas condenser 52, make steam liquefied more abundant.
Described return tank 3 is also provided with liquid level detection device 9 and purity detecting device 10.Liquid water level situation in liquid level detection device 9 Real-Time Monitoring return tanks 3, if the liquid water level in return tank 3 is lower than scope minimum, closes the water inlet valve of pressue device 6, stops at the interior extracting liquid of return tank 3.Now having passed through the gaseous state of condenser 2 condensations and the liquid adjacent first of mixing constantly flows in return tank 3 by pipeline, the adjacent first of gas in return tank 3 enters gas condenser 52 by pipeline and does further condensation, liquid adjacent first flow in return tank 3 along back of pipeline, and the interior liquid water level of return tank 3 constantly raises.Liquid water level situation in liquid level detection device 9 Real-Time Monitoring return tanks 3, when the peak of the interior liquid water level of return tank 3 reach, open purity detecting device 10, detect the interior purity liquid of return tank 3, carry out following steps according to the purity liquid value detecting: when the purity liquid in return tank 3 does not also reach finished product concentration value, the water inlet valve of opening pressue device 6 extracts return tank 3 interior liquid and continues to do further rectifying to rectifying column 1 is interior, now liquid level detection device 9 detects the interior liquid water level of return tank 3 situation in real time, when the liquid water level in return tank 3 is lower than scope minimum, close the water inlet valve of pressue device 6, stop at the interior extracting liquid of return tank 3, when the purity liquid in return tank 3 reaches finished product concentration value, the water inlet valve of opening pressue device 6 extracts the interior liquid of return tank 3 and do further condensation to finished product condenser 4, condensed liquid flows into storage in intermediate storage tank, now liquid level detection device 9 detects the interior liquid water level of return tank 3 situation in real time, when the liquid water level in return tank 3 is lower than scope minimum, close the water inlet valve of pressue device 6, stop at the interior extracting liquid of return tank 3.Just can control flow channel and the flow of the adjacent first of liquid state of extraction by regulating valve in the first reflux pump 7 and the second reflux pump 8.Through repeatedly the purity of the adjacent first of liquid state of rectifying reach after standard-required through pipeline to the further condensation of the interior do of finished product condenser 4, condensed liquid flows into storage in intermediate storage tank.Use purity detecting device 10 to detect the purity of return tank 3 interior liquid, can better understand the concentration situation of return tank 3 interior adjacent first.
The foregoing is only embodiment of the present utility model, all any amendments of doing within the scope of spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a modified methylaniline rectifying column reflux, comprise rectifying column (1), condenser (2), return tank (3) and finished product condenser (4), described rectifying column (1) forms closed circuit by pipeline through condenser (2) and return tank (3), described return tank (3) is communicated with finished product condenser (4) by pipeline, it is characterized in that, also comprise vacuum system (5), described return tank (2) is communicated with vacuum system (5) by pipeline.
2. modified methylaniline rectifying column reflux according to claim 1, it is characterized in that, between described return tank (3) and finished product condenser (4), be provided with backflow pressue device (6), the water inlet of described backflow pressue device (6) and return tank (3) pipeline communication, the delivery port of backflow pressue device (6) respectively with finished product condenser (4), rectifying column (1) pipeline communication.
3. modified methylaniline rectifying column reflux according to claim 2, it is characterized in that, described pressue device (6) comprises the first reflux pump (7) and the second reflux pump (8), described the first reflux pump (7) is connected with the second reflux pump (8) parallel way, water inlet and return tank (3) pipeline communication of the first reflux pump (7) and the second reflux pump (8), the delivery port branch of the first reflux pump (7) and the second reflux pump (8) and finished product condenser (4), rectifying column (1) pipeline communication.
4. modified methylaniline rectifying column reflux according to claim 1, it is characterized in that, the refrigerant entrance of described condenser (2) is connected with the delivery port of a first external water circulation system (11), and the refrigerant exit of condenser (2) connects the water inlet of this first external water circulation system (11).
5. modified methylaniline rectifying column reflux according to claim 1, it is characterized in that, the refrigerant entrance of described finished product condenser (4) is connected with the delivery port of a second external water circulation system (12), and the refrigerant exit of finished product condenser (4) connects the water inlet of this second external water circulation system (12).
6. modified methylaniline rectifying column reflux according to claim 1, is characterized in that, described return tank (3) is also provided with liquid level detection device (9) and purity detecting device (10).
7. modified methylaniline rectifying column reflux according to claim 1, it is characterized in that, described vacuum system (5) comprises vacuum catcher (51), gas condenser (52) and vavuum pump (53), and gas condenser (52) is communicated with vavuum pump (53) through vacuum catcher (51) by pipeline.
8. modified methylaniline rectifying column reflux according to claim 7, it is characterized in that, the refrigerant entrance of described gas condenser (52) is connected with the delivery port of a 3rd external water circulation system (13), and the refrigerant exit of gas condenser (52) connects the water inlet of the 3rd external water circulation system (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397558.3U CN203989936U (en) | 2014-07-18 | 2014-07-18 | Modified methylaniline rectifying column reflux |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397558.3U CN203989936U (en) | 2014-07-18 | 2014-07-18 | Modified methylaniline rectifying column reflux |
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| CN203989936U true CN203989936U (en) | 2014-12-10 |
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| CN201420397558.3U Expired - Fee Related CN203989936U (en) | 2014-07-18 | 2014-07-18 | Modified methylaniline rectifying column reflux |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998519A (en) * | 2015-06-29 | 2015-10-28 | 天津市天地创智科技发展有限公司 | Ammonia gas absorption device for tert-butyl alcohol reduced pressure recovery tower and ammonia gas absorption method |
| CN108484386A (en) * | 2018-06-28 | 2018-09-04 | 南通山剑石墨设备有限公司 | Continuous production device for chloroacetic acid and its production technology |
-
2014
- 2014-07-18 CN CN201420397558.3U patent/CN203989936U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998519A (en) * | 2015-06-29 | 2015-10-28 | 天津市天地创智科技发展有限公司 | Ammonia gas absorption device for tert-butyl alcohol reduced pressure recovery tower and ammonia gas absorption method |
| CN104998519B (en) * | 2015-06-29 | 2017-04-12 | 天津市天地创智科技发展有限公司 | Ammonia gas absorption device for tert-butyl alcohol reduced pressure recovery tower and ammonia gas absorption method |
| CN108484386A (en) * | 2018-06-28 | 2018-09-04 | 南通山剑石墨设备有限公司 | Continuous production device for chloroacetic acid and its production technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |