CN208829573U - A kind of distillatory vacuum buffer device of 2,3- dichloropyridine - Google Patents
A kind of distillatory vacuum buffer device of 2,3- dichloropyridine Download PDFInfo
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- CN208829573U CN208829573U CN201821168738.9U CN201821168738U CN208829573U CN 208829573 U CN208829573 U CN 208829573U CN 201821168738 U CN201821168738 U CN 201821168738U CN 208829573 U CN208829573 U CN 208829573U
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Abstract
The utility model discloses the distillatory vacuum buffer devices of one kind 2,3- dichloropyridine, it is characterised in that: including vacuum buffer tank, vacuum air inlet pipeline, vacuum suction pipeline, vacuum pump, water filter and fluid reservoir；The vacuum buffer tank is equipped with vacuum inlet, vacuum pumping opening and sewage draining exit, which connect with vacuum air inlet pipeline, which is installed on vacuum air inlet pipeline；The vacuum pumping opening is connect with vacuum suction pipeline, which is installed on vacuum exhaust pipe road；The sewage draining exit connects sewage pipe, is connect by collecting pipe with fluid reservoir in the middle part of the sewage pipe, which installs the first valve, second valve is installed on the collecting pipe, the fluid reservoir is equipped with evacuated tube and discharge pipe, is equipped with third valve in the evacuated tube, the 4th valve is equipped on the discharge pipe.The utility model can not shut down draining, while dust and liquid being avoided to enter in vacuum pump and reduce vacuum pump failure.
Description
Technical field
The utility model belongs to a kind of distillatory vacuum buffer device of 2,3- dichloropyridine.
Background technique
When being prepared to 2,3- dichloropyridine, following technique can be used: in the presence of solvent and acid binding agent, with 2,
3,6- trichloropyridines are original in 250ml autoclave (hydrogenation reaction kettle), put into 30g2,3,6- trichloropyridines, 90g first
Alcohol, 30g triethylamine, 0.2g tri- (triphenylphosphine) radium chloride (I), 0.4g triphenylphosphine are passed through in nitrogen replacement reaction kettle empty
Gas, replacement completion lead to hydrogen and are warming up to 75 DEG C and reacted, and reaction pressure is gradually reduced in reaction process, fills into hydrogen dimension
Reaction pressure is held between 2.0~2.2MPa, successive reaction 18h, reaction terminates.
Need to configure vacuum buffer device during to 2,3- dichloropyridine distilation due to existing, be used for for
Distillation equipment provides negative pressure of vacuum environment, while providing compensator or trimmer pressure, prevents from flowing backward.And it is sent out when existing vacuum buffer device use
Now have the following problems:
First, in pumping process, since there are impurity for the high-temperature gas in distillation equipment, when impurity enters in vacuum pump
When, it be easy to cause vacuum pump failure；
Second, in pumping process, due to the high-temperature gas in distillation equipment enter vacuum buffer tank after can generate it is cold
It is solidifying, cause condensed water to be assembled, when ponding exceeds a certain range, causing vacuum pump, the load becomes large, and system shakes big etc. dangerous
Factor generates, it is therefore necessary to it will be discharged in time, and the prior art can only drain under shutdown status.
Utility model content
In order to which in view of one or more defects existing in the prior art, the utility model provides one kind 2,3- dichloro
The distillatory vacuum buffer device of pyridine.
To achieve the above object, the utility model provides the distillatory vacuum buffer device of one kind 2,3- dichloropyridine,
It is characterized by comprising vacuum buffer tank (1), vacuum air inlet pipeline (2), vacuum suction pipeline (3), vacuum pump (4), water filterings
Device (5) and fluid reservoir (6)；The vacuum buffer tank (1) is equipped with vacuum inlet (1-1), vacuum pumping opening (1-2) and blowdown
Mouth (1-3), the sewage draining exit (1-3) are set to vacuum buffer tank (1) bottom, which is set to vacuum buffer tank
(1) top；The vacuum inlet (1-1) is connect with vacuum air inlet pipeline (2), which is installed on vacuum air inlet pipe
On road (2)；The vacuum pumping opening (1-2) is connect with vacuum suction pipeline (3), which is installed on vacuum suction pipeline
(3) on；The sewage draining exit (1-3) connects sewage pipe (7), is connect by collecting pipe (8) with fluid reservoir (6) in the middle part of the sewage pipe (7),
Sewage pipe (7) tail end installs the first valve (9), installs the second valve (10) on the collecting pipe (8), which is equipped with row
Blank pipe (11) and discharge pipe (12) are equipped with third valve (13) in the evacuated tube (11), are equipped with the 4th on the discharge pipe (12)
Valve (14).
Using the above scheme, when the vacuum pump (4) works, the high-temperature gas in distillation equipment can be extracted out, and high temperature
Gas enters in the vacuum buffer tank (1) after water filter (5) contaminant filter on vacuum air inlet pipeline (2), then
It is extracted out through vacuum suction pipeline (3) outlet.The water filter (5) for the impurity in filtering high temperature gas, to avoid impurity into
Enter in vacuum pump (4), cause equipment fault, it is thus ensured that vacuum pump (4) works normally and prolongs the service life.Due to high temperature
When the gas that when gas passes through water filter (5) of low temperature, can be generated condensed water, while suck passes through water filter (5), gas
Water content increases, and then enters and generate condensed water in vacuum buffer tank (1).In order to solve condensed water in vacuum buffer tank (1)
Rendezvous problem, openable second valve (10) closes third valve (13) and the 4th valve (14), the condensation in vacuum buffer tank (1)
Water enters in fluid reservoir (6)；Then it can close the second valve (10), open third valve (13) and the 4th valve (14), the fluid reservoir (6)
Interior ponding is directly exhausted from the 4th valve (14), realized in whole process equipment do not have to shut down work, while avoid dust and
Liquid enters in vacuum pump and reduces vacuum pump failure.
Further, the water filter (5) has at least two and is installed in parallel in the vacuum air inlet pipeline (2)
On.When the damage of any one water filter (5), due to being arranged in parallel, close corresponding water filter (5) will not equipment influence just
Then often work can be replaced after water filter (5) disassembly under not shutdown status.Simultaneously when multiple water filters (5) while work
When making, working efficiency can be improved, meet different process requirement.
Further, the vacuum pump (4) has at least two and is installed in parallel on the vacuum suction pipeline (3).
When the damage of any one vacuum pump (4), due to being arranged in parallel, closing after corresponding to vacuum pump (4) will not the normal work of equipment influence
Make, then can be replaced after vacuum pump (4) disassembly under not shutdown status.It, can simultaneously when multiple water filters (5) work at the same time
Improve treatment effeciency.Simultaneously when multiple vacuum pumps (4) work at the same time, working efficiency can be improved, meet different process requirement.
Further, liquid level sensor (15) are installed on the vacuum buffer tank (1), which is used for
Vacuum buffer tank (1) the interior liquid level is detected, first valve (9), the second valve (10), third valve (13) and the 4th valve (14) use
Electrically-controlled valve；The liquid level sensor (15), the first valve (9), the second valve (10), third valve (13) and the 4th valve (14) are with control
System electrical connection.When the liquid level sensor (15) detects the interior liquid level of the vacuum buffer tank (1) and reaches certain altitude, ponding is to a certain amount of
When, which can control corresponding valve execution work accordingly, it can be achieved that controlling automatically and remotely, manual operation is reduced, and
It produces safer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
Referring to Fig. 1-2, the distillatory vacuum buffer device of one kind 2,3- dichloropyridine comprising vacuum buffer tank 1, vacuum
Air inlet pipeline 2, vacuum suction pipeline 3, vacuum pump 4, water filter 5 and fluid reservoir 6；The vacuum buffer tank 1 be equipped with vacuum into
Port 1-1, vacuum pumping opening 1-2 and sewage draining exit 1-3, sewage draining exit 1-3 are set to 1 bottom of vacuum buffer tank, the vacuum pumping opening
1-2 is set to 1 top of vacuum buffer tank；Vacuum inlet 1-1 is connect with vacuum air inlet pipeline 2, which is installed on very
On empty air inlet pipeline 2；Vacuum pumping opening 1-2 is connect with vacuum suction pipeline 3, which is installed on vacuum suction pipeline
On 3；Sewage draining exit 1-3 connection sewage pipe 7 is connect by collecting pipe 8 with fluid reservoir 6 in the middle part of the sewage pipe 7,7 tail of sewage pipe
The first valve 9 is installed at end, installs the second valve 10 on the collecting pipe 8, which is equipped with evacuated tube 11 and discharge pipe 12, the row
Third valve 13 is installed on blank pipe 11, the 4th valve 14 is installed on the discharge pipe 12.
When the vacuum pump 4 work, the high-temperature gas in distillation equipment can be extracted out, and high-temperature gas passes through vacuum air inlet
Enter in the vacuum buffer tank 1 after 5 contaminant filter of water filter on pipeline 2, is then taken out through 3 outlet of vacuum suction pipeline
Out.The water filter 5 enters in vacuum pump 4 to avoid impurity for the impurity in filtering high temperature gas, causes equipment fault,
It is thus ensured that vacuum pump 4 works normally and prolongs the service life.When passing through the water filter 5 of low temperature due to high-temperature gas, meeting
Generate condensed water, while suck gas pass through water filter 5 when, gas water content increase, and then enter vacuum buffer tank 1 in
Generate condensed water.In order to solve rendezvous problem of the condensed water in vacuum buffer tank 1, openable second valve 10 closes third valve
13 and the 4th valve 14, the condensed water in vacuum buffer tank 1 enters in fluid reservoir 6；Then the second valve 10 can be closed, third valve is opened
13 and the 4th valve 14, ponding in the fluid reservoir 6 is directly exhausted from the 4th valve 14, it can be achieved that do not have to shut down draining, is kept away simultaneously
Exempt from dust and liquid enters in vacuum pump and reduces vacuum pump failure.
Further, the water filter 5 has at least two and is installed in parallel on the vacuum air inlet pipeline 2.When
When any one water filter 5 damages, due to being arranged in parallel, close corresponding water filter 5 will not equipment influence to work normally, so
After can under not shutdown status water filter 5 dismantle after replace.Simultaneously when multiple water filters 5 work at the same time, work can be improved
Make efficiency, meets different process requirement.
Further, the vacuum pump 4 has at least two and is installed in parallel on the vacuum suction pipeline 3.When appoint
When one vacuum pump 4 damages, due to being arranged in parallel, close after corresponding vacuum pump 4 will not equipment influence to work normally, then can be
Vacuum pump 4 is not replaced after dismantling under shutdown status.Simultaneously when multiple water filters 5 work at the same time, treatment effeciency can be improved.Together
When multiple vacuum pumps 4 work at the same time, working efficiency can be improved, meet different process requirement.
Further, liquid level sensor 15 is installed on the vacuum buffer tank 1, the liquid level sensor 15 is for detecting this
Liquid level in vacuum buffer tank 1, first valve 9, the second valve 10, third valve 13 and the 4th valve 14 use electrically-controlled valve；The vacuum pump
4, liquid level sensor 15, the first valve 9, the second valve 10, third valve 13 and the 4th valve 14 are electrically connected to the control system.When the liquid
Level sensor 15 detects in the vacuum buffer tank 1 liquid level when rising to certain altitude, i.e., ponding to it is a certain amount of when, the control system
The second valve 10 is opened in control, closes third valve 13 and the 4th valve 14, the condensed water in vacuum buffer tank 1 enters fluid reservoir 6 at this time
It is interior；When liquid level is lower than certain altitude in the liquid level sensor 15 detection vacuum buffer tank 1, i.e., when ponding is drained, the control
The second valve 10 is closed in system control, opens third valve 13 and the 4th valve 14, and the ponding in the fluid reservoir 6 is directly arranged from the 4th valve 14
Fall, it can be achieved that not having to shut down draining, and can realize automatic and long-range control.
Controllable corresponding valve executes corresponding work, it can be achieved that automatic and long-range control, reduces manual operation, and produce more
Add safety.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (4)
1. one kind 2, the distillatory vacuum buffer device of 3- dichloropyridine, it is characterised in that: including vacuum buffer tank (1), vacuum
Air inlet pipeline (2), vacuum suction pipeline (3), vacuum pump (4), water filter (5) and fluid reservoir (6)；
The vacuum buffer tank (1) is equipped with vacuum inlet (1-1), vacuum pumping opening (1-2) and sewage draining exit (1-3), the blowdown
Mouth (1-3) is set to vacuum buffer tank (1) bottom, which is set at the top of vacuum buffer tank (1),
The vacuum inlet (1-1) is connect with vacuum air inlet pipeline (2), which is installed on vacuum air inlet pipeline (2)
On；
The vacuum pumping opening (1-2) is connect with vacuum suction pipeline (3), which is installed on vacuum suction pipeline (3)
On；
The sewage draining exit (1-3) connects sewage pipe (7), is connect by collecting pipe (8) with fluid reservoir (6) in the middle part of the sewage pipe (7), should
Sewage pipe (7) tail end installs the first valve (9), installs the second valve (10) on the collecting pipe (8), which is equipped with emptying
(11) and discharge pipe (12) are managed, third valve (13) are installed in the evacuated tube (11), the 4th valve is installed on the discharge pipe (12)
(14)。
2. the distillatory vacuum buffer device of one kind 2,3- dichloropyridine as described in claim 1, it is characterised in that: the water
Filter (5) has at least two and is installed in parallel on the vacuum air inlet pipeline (2).
3. the distillatory vacuum buffer device of one kind 2,3- dichloropyridine as described in claim 1, it is characterised in that: described true
Sky pump (4) has at least two and is installed in parallel on the vacuum suction pipeline (3).
4. a kind of distillatory vacuum buffer device of 2,3- dichloropyridine as claimed in any one of claims 1-3, feature
It is: liquid level sensor (15) is installed on the vacuum buffer tank (1), the liquid level sensor (15) is slow for detecting the vacuum
Tank (1) interior liquid level is rushed, first valve (9), the second valve (10), third valve (13) and the 4th valve (14) use electrically-controlled valve；
The liquid level sensor (15), the first valve (9), the second valve (10), third valve (13) and the 4th valve (14) are and control system
Electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821168738.9U CN208829573U (en) | 2018-07-24 | 2018-07-24 | A kind of distillatory vacuum buffer device of 2,3- dichloropyridine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821168738.9U CN208829573U (en) | 2018-07-24 | 2018-07-24 | A kind of distillatory vacuum buffer device of 2,3- dichloropyridine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208829573U true CN208829573U (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821168738.9U Active CN208829573U (en) | 2018-07-24 | 2018-07-24 | A kind of distillatory vacuum buffer device of 2,3- dichloropyridine |
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| Country | Link |
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| CN (1) | CN208829573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939445A (en) * | 2022-03-29 | 2022-08-26 | 合肥通用机械研究院有限公司 | Large vacuum degree change test device and test method using same |
-
2018
- 2018-07-24 CN CN201821168738.9U patent/CN208829573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939445A (en) * | 2022-03-29 | 2022-08-26 | 合肥通用机械研究院有限公司 | Large vacuum degree change test device and test method using same |
| CN114939445B (en) * | 2022-03-29 | 2023-12-22 | 合肥通用机械研究院有限公司 | Large vacuum degree change test device and test method using same |
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