CN207085371U - A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate - Google Patents
A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate Download PDFInfo
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- CN207085371U CN207085371U CN201720780524.6U CN201720780524U CN207085371U CN 207085371 U CN207085371 U CN 207085371U CN 201720780524 U CN201720780524 U CN 201720780524U CN 207085371 U CN207085371 U CN 207085371U
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- pressure tester
- tower
- pressure
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- distillation apparatus
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Abstract
The utility model discloses a kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate, including tower body, vacuum extractor and pressure tester, described vacuum extractor to be connected with tower top；Described pressure tester includes the first pressure tester, the second pressure tester in the middle part of tower and the 3rd pressure tester located at bottom of towe located at tower top；Described vacuum distillation apparatus also includes the alarm that control module is connected with control module.The vacuum distillation tower by the middle part of tower top, tower and bottom of towe respectively set a pressure tester, for determining the pressure differential between each distilling period, to obtain gas leakage information in vacuum distillation tower, reduce the leakage problem of destilling tower.
Description
Technical field
The utility model belongs to field of chemical equipment, and in particular to a kind of for activated thioester of cefixime side chain intermediate
Vacuum distillation apparatus.
Background technology
Distillation is a kind of thermodynamic (al) separating technology, and it is utilized in mixing liquid, and each component boiling point is different, makes low boiling group
Divide evaporation, then condense the joint for separate the unit process of whole component, being evaporation and condensing two kinds of units operations.With it
Its separation means, such as extraction, filtering for crystallizing compare, it the advantages of be without the use of system components beyond it is other molten
Agent, so as to ensure that new impurity will not be introduced.
Distillation there are various forms, divided according to distillation mode, including simple distillation, equlibrium distillation, rectifying,
Special extract rectification etc.；Divided according to operation pressure, including air-distillation, distillation under pressure and vacuum distillation etc..Wherein, decompression is steamed
Evaporate due to vapo(u)rizing temperature can be significantly reduced, go for the higher component of boiling point or unstable in temperature higher strip part
The separation of component, is most widely used.
Be also to need to use in activated thioester of cefixime side chain intermediate building-up process one is evaporated under reduced pressure to operate, it is existing
Vacuum distillation used by equipment be destilling tower, in order to realize that vacuum distillation also needs to include one with being connected inside destilling tower
Vacuum extractor.When be evaporated under reduced pressure operation, small leakage can sometimes occur in some part of vacuum distillation tower
Gas, because air leakage is less, large effect will not be produced to the whole process of vacuum distillation, but can cause to be evaporated under reduced pressure
Efficiency reduces, and causes the waste of the energy.
Utility model content
The utility model provides a kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate, the decompression
Distilling apparatus can be effectively prevented from the leakage in vacuum distillation tower still-process, improve the service efficiency of energy.
A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate, including tower body, vacuum extractor and
Pressure tester, described vacuum extractor are connected with tower top；
Described pressure tester includes the first pressure tester located at tower top, the second pressure tester in the middle part of tower and set
In the 3rd pressure tester of bottom of towe；
Described vacuum distillation apparatus also includes control module and the alarm being connected with control module；
The control module is used for the pressure value of the first pressure tester of reception, the second pressure tester and the 3rd pressure tester simultaneously
The opening and closing of alarm are controlled according to pressure differential.
In the utility model, respectively the tower top in destilling tower, near tower neutralizing tower bottom set three independent pressure testers,
Meanwhile the pressure value of these three pressure testers is gathered using control module, and it is respectively compared the second pressure tester and the first pressure measurement
Pressure differential between device and the second pressure tester and the 3rd pressure tester, if both pressure difference values exceed preset value,
Then illustrate that tower body has leakage, then send alarm signal to alarm.
When vacuum distillation apparatus releases vacuum state, because air enters inside tower body, liquid can be caused to be pressed into survey
Pressure device, pressure tester is caused damage, preferably, being provided with surge tank between described pressure tester and tower body.
After the steam of heat enters surge tank, it can be condensed in the inwall of surge tank, so as to be gathered in the inside of surge tank
Collection, if the amount of liquid condensed out in surge tank is more, can cause surge tank to lose cushioning effect, as further
It is preferred that be connected between described surge tank and tower body by input duct, and described input duct stretches into the buffering
Near the bottom of tank；The bottom of described surge tank is provided with the tap line being connected with tower body, and described tap line is provided with
Control valve, in normal operation, the valve on tap line are constantly in open mode, and the liquid of condensation can directly enter
Enter inside tower body, will not assemble in surge tank.
In order to prevent in still-process, the liquid of condensation is converged in surge tank, and described tap line is obliquely installed.Make
To be further preferred, described tap line and the angle of tower body are 30~50o.The angle effectively can make liquid flow back
Enter in tower body.
Compared with the existing technology, the beneficial effects of the utility model are embodied in：
(1) the utility model by the middle part of the tower top of destilling tower, tower and bottom of towe respectively set a pressure tester, for surveying
Pressure differential between fixed each distilling period, when one section of pressure differential is significantly lower than the pressure differential of the other end, control module
Then triggering alarm is alarmed, so as to efficiently reduce the leakage of destilling tower generation；
(2) the utility model before pressure tester by setting surge tank, when can effectively prevent from releasing vacuum, liquid
Into pressure tester；
(3) by setting a tap line for being passed through destilling tower tower body in the bottom of surge tank, when can prevent distillation
Liquid is assembled in surge tank, ensures the buffering effect of surge tank.
Brief description of the drawings
Fig. 1 is the structural representation of the vacuum distillation apparatus of the present utility model for activated thioester of cefixime side chain intermediate
Figure；
Fig. 2 is the structural representation of pressure tester of the present utility model and buffer unit；In figure, 1：Tower body；2：Vacuumize
Device；3：First pressure tester；4：Second pressure tester；5：3rd pressure tester；6：Surge tank；7：Input duct；8：Tapping
Pipeline；9：Control valve；10：Control module；11：Alarm.
Embodiment
Vacuum distillation apparatus of the present utility model is further described below in conjunction with the accompanying drawings.
The structural representation of vacuum distillation apparatus as shown in Figure 1 understands that the vacuum distillation apparatus includes destilling tower tower body
1, the tower body 1 is followed successively by tower top, tower middle part and bottom of towe, the inside of tower body 1 filling filler from top to bottom, and tower top goes out provided with distillate
Mouthful, bottom of towe exports provided with kettle liquid.
Vacuum extractor 2, generally vavuum pump are communicated with the top of tower top, the vavuum pump is used to carry to whole destilling tower
For negative pressure, it is evaporated under reduced pressure with realizing.
In the present embodiment, destilling tower is connected to three pressure testers, respectively the first pressure tester positioned at tower top
3rd, the second pressure tester 4 in the middle part of tower and the 3rd pressure tester 5 positioned at bottom of towe, three pressure testers are used to measure tower
The different parts pressure of body 1.
The vacuum distillation apparatus also includes control module 10 and the alarm 11 being connected with control module 10；The control module
10 are used for the pressure value of the first pressure tester 3 of receiving, the second pressure tester 4 and the 3rd pressure tester 5, while the first pressure measurement is filled
Put 3 and second pressure tester 4 pressure differential compared with the pressure differential of the second pressure tester 4 and the 3rd pressure tester 5, if
Both difference differences are larger, then illustrate that vacuum distillation tower is leaked.
For example, when the pressure drop of the first pressure tester 3 and the second pressure tester 4 is significantly greater than the second pressure tester 4 and the
The pressure drop of three pressure testers 5, then illustrate to be leaked between the first pressure tester 3 and the second pressure tester 4.Now, control
Molding block 10 is according to the result detected, and control alarm 11 sends alarm signal, to remind operating personnel to be overhauled.
Surge tank 6 is designed between each pressure tester and destilling tower, pressure tester and buffer unit as shown in Figure 2
Structural representation understand that the surge tank 6 be the inverted conical structure for clipping drift angle, destilling tower and the centre of surge tank 6
Input duct 7 stretches into the substrate zone of surge tank 6, and the connecting pipe of pressure tester and surge tank 6 is connected to the top of surge tank 6, this
The structure of sample can effectively prevent the liquid in destilling tower from entering pressure tester.
A tap hole is offered in the bottom of surge tank 6, the tap hole is provided with a tap line being connected with tower body 1
8, the angle of tap line 8 and tower body 1 is provided with a control valve 9 substantially at 30 degree or so on tap line 8.Work as distillation
When process is carried out, the control valve 9 is opened, now, condensed if condensate liquid enters in surge tank 6, can be by putting
Liquid pipe road 8 flows back to tower body 1, avoids assembling in surge tank 6.When completing distillation or needing temporarily to stop distillation, release and steam
Before the pressure for evaporating tower, first control valve 9 is closed, surge tank 6 is played cushioning effect, can effectively prevent liquid from entering to survey
Pressure device.
The technical solution of the utility model and beneficial effect are described in detail above-described embodiment,
It should be understood that the foregoing is only most preferred embodiment of the present utility model, the utility model is not limited to, it is all at this
Any modification, supplement and equivalent substitution made in the spirit of utility model etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate, including tower body (1), vacuum extractor
(2) and pressure tester, it is characterised in that described vacuum extractor (2) is connected with tower top；
Described pressure tester include located at the first pressure tester (3) of tower top, the second pressure tester (4) in the middle part of tower and
Located at the 3rd pressure tester (5) of bottom of towe；
Described vacuum distillation apparatus also includes control module (10) and the alarm (11) being connected with control module (10)；
The control module (10) is used to receive the first pressure tester (3), the second pressure tester (4) and the 3rd pressure tester (5)
Pressure value and according to pressure differential control alarm (11) opening and closing.
2. vacuum distillation apparatus according to claim 1, it is characterised in that between described pressure tester and tower body (1)
Provided with surge tank (6).
3. vacuum distillation apparatus according to claim 2, it is characterised in that between described surge tank (6) and tower body (1)
It is connected by input duct (7), and described input duct (7) is stretched near the bottom of the surge tank；
The bottom of described surge tank (6) is provided with the tap line (8) being connected with tower body (1), and described tap line is set on (8)
There is control valve (9).
4. vacuum distillation apparatus according to claim 3, it is characterised in that described tap line (8) is obliquely installed.
5. vacuum distillation apparatus according to claim 4, it is characterised in that described tap line (8) and tower body (1) it
Between angle be 30~50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780524.6U CN207085371U (en) | 2017-06-30 | 2017-06-30 | A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780524.6U CN207085371U (en) | 2017-06-30 | 2017-06-30 | A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate |
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| Publication Number | Publication Date |
|---|---|
| CN207085371U true CN207085371U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720780524.6U Active CN207085371U (en) | 2017-06-30 | 2017-06-30 | A kind of vacuum distillation apparatus for activated thioester of cefixime side chain intermediate |
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| Country | Link |
|---|---|
| CN (1) | CN207085371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694291A (en) * | 2019-10-31 | 2020-01-17 | 周孝威 | Pressure reducing device with early warning for distillation tower |
-
2017
- 2017-06-30 CN CN201720780524.6U patent/CN207085371U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694291A (en) * | 2019-10-31 | 2020-01-17 | 周孝威 | Pressure reducing device with early warning for distillation tower |
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