CN206652263U - A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system - Google Patents
A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system Download PDFInfo
- Publication number
- CN206652263U CN206652263U CN201720334023.5U CN201720334023U CN206652263U CN 206652263 U CN206652263 U CN 206652263U CN 201720334023 U CN201720334023 U CN 201720334023U CN 206652263 U CN206652263 U CN 206652263U
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- China
- Prior art keywords
- rectifying
- biphenylmethanol
- methyl
- pipeline
- chlorination
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- Expired - Fee Related
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system, including rectifying still, surge tank, vavuum pump, the rectifying still upper end is communicated with rectifying column, the rectifying column first passes through pipeline a and connected with feeding mouth at the top of surge tank, the feeding mouth side is provided with two bleeding points, one bleeding point rushes pump with water by pipeline b and connected, and another bleeding point is connected by pipeline c with vavuum pump.From the utility model structure, by changing traditional rectifying mode, pump is rushed using water first to take out the foreign gas distilled in rectifying still and sour gas, then high vacuum is being carried out by vavuum pump so that 2-methyl-3-biphenylmethanol chlorination rectifying work can continue to carry out, and prevent impurity or sour gas from entering vavuum pump, vavuum pump is caused to block, corrosion and damage, maintenance cost is added, maintenance rate improves, and capacity benefit greatly reduces.
Description
Technical field
A kind of rectifying vacuum system is the utility model is related to, more particularly, to a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system.
Background technology
With the development of society, the purposes of biphenyl is more and more wider, social required quantity also more carrys out also big, required connection domestic now
Benzene is produced with the method for synthesis, and process is cumbersome and yields poorly, it is impossible to meets social desirability.The side of my company's distillation
Method directly extracts biphenyl from benzene mixed, then can obtain qualified biphenyl with the method for solvent recrystallization.
Biphenyl, which extracts the production with purifies and separates and operated, includes two processes, is divided into rectification working process and Crystallization Procedure.Essence
Evaporating process includes three rectifying columns：(1) benzenol hydrorefining is taken off；(2) naphthalene tower is taken off；(3) biphenyl steams tower.Crystallization Procedure includes：
(1) the molten crystallisation by cooling kettle of 2-methyl-3-biphenylmethanol；(2) tripod pendulum type batch centrifugal with cover；(3) Methanol Recovery distillation still.And in the course of work
In, enterprise frequently encounters the vavuum pump used in rectification working process and damaged often because of sour gas corrosion, or because of impurity mistake
Block more and need regularly to be cleared up, not only increase production cost, add machine maintenance rate, while also reduce production
Can benefit.
Utility model content
The purpose of this utility model is to provide a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system, overcomes lacking for prior art
Fall into, solve vavuum pump and damaged often because of sour gas corrosion, or need regularly to be cleared up because impurity excessively blocks
The problem of.
In order to achieve the above object, the utility model employs following technical scheme：
A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system, including rectifying still, surge tank, vavuum pump, the rectifying still upper end connect
Rectifying column is connected with, the rectifying column first passes through pipeline a and connected with feeding mouth at the top of surge tank, and the feeding mouth side is taken out provided with two
Gas port, a bleeding point rush pump with water by pipeline b and connected, and another bleeding point is connected by pipeline c with vavuum pump.
Further improvement of the utility model scheme is that the pipeline c middle parts are communicated with activated carbon acidity absorber.
Further improvement of the utility model scheme is that multiple circular activated carbons are provided with the activated carbon acidity absorber
Plate.
Further improvement of the utility model scheme is to pass through circular filter net branch between the active carbon slab circular two-by-two
Support connection.
Further improvement of the utility model scheme is that the size of the screen pack is：The mesh of 20 mesh~40.
Further improvement of the utility model scheme is that the activated carbon acidity absorber side pipeline c is provided with vacuum
Valve A.
Further improvement of the utility model scheme is that the pipeline b is provided with vacuum valve B.
Compared with prior art, the beneficial effects of the utility model are：
First, a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system provided by the utility model, by changing traditional rectifying mode, first
Pump is rushed using water first to take out the foreign gas distilled in rectifying still and sour gas, and height is then being carried out by vavuum pump
Spend vacuum so that 2-methyl-3-biphenylmethanol chlorination rectifying work can continue to carry out, and prevent impurity or sour gas from entering vavuum pump, cause true
Empty pump blocks, corrosion and damage, adds maintenance cost, and maintenance rate improves, and capacity benefit greatly reduces.
2nd, a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system provided by the utility model, work is communicated with pipeline c middle parts
Property charcoal acidity absorber, wherein the active carbon slab contained can further remove the sour gas remained in gas, prevents it from entering
Enter into vavuum pump, cause vavuum pump to be damaged because of corrosion；In addition, screen pack can further remove the impurity in gas, prevent
Only it is entered in vavuum pump, causes vavuum pump to block, and is increased machine maintenance rate, is improved production cost.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is the longitudinal cutting structure schematic diagram of activated carbon acidity absorber of the present utility model.
Fig. 3 is the crosscutting schematic diagram of activated carbon acidity absorber of the present utility model.
1 is rectifying still in figure, and 2 be surge tank, and 3 be vavuum pump, and 4 be rectifying column, and 5 be pipeline a, and 6 be pipeline b, and 7 be pipeline
C, 8 be that water rushes pump, and 9 be activated carbon acidity absorber, and 10 be vacuum valve A, and 11 be vacuum valve B, and 12 be active carbon slab, and 13 be filtering
Net.
Embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model, after the utility model has been read, this
Modification of the art personnel to the various equivalent form of values of utility model falls within the model that the application appended claims are limited
Enclose.
Embodiment 1：A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system as shown in Figure 1, Figure 2 and Figure 3, including it is rectifying still 1, slow
Tank 2, vavuum pump 3 are rushed, the upper end of rectifying still 1 is communicated with rectifying column 4, it is characterised in that：The rectifying column 4 first passes through pipeline a5
Connected with the top feeding mouth 21 of surge tank 2, the side of feeding mouth 21 is provided with two bleeding points, and a bleeding point passes through pipeline b6 and water
Rush pump 8 to connect, another bleeding point is connected by pipeline c7 with vavuum pump 3；The pipeline c7 middle parts are communicated with activated carbon acid
Property absorber 9；The active carbon slab 12 of multiple circles is provided with the activated carbon acidity absorber 9；The active carbon slab circular two-by-two
Supported and connected by circular filter net 13 between 12；The size of the screen pack 13 is：The mesh of 20 mesh~40；The activated carbon is acid
The side pipeline c7 of absorber 9 is provided with vacuum valve A10；The pipeline b6 is provided with vacuum valve B11.
Working method of the present utility model：When 2-methyl-3-biphenylmethanol rectifying, which works, to be carried out, vacuum valve A10 is first shut off, is opened true
Empty valve B simultaneously opens water and rushes pump 8, comes out the foreign gas carried in gas to rectifying in rectifying still 1 and sour gas extracts,
Prevent from entering in vavuum pump 3, cause vavuum pump 3 to block or corrode vavuum pump 3 and be damaged to, reduce maintenance rate and its life
Produce cost；Generated heat in the course of the work because water rushes pump 8, cause the vacuum in surge tank inadequate, so treating that water rushes pump 8 and worked
After a period of time, vacuum valve B is closed, vacuum valve A10 is opened and opens vavuum pump 3, further surge tank 2 take out very
Sky, ensure the vacuum in surge tank 2.
Claims (7)
1. a kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system, including rectifying still（1）, surge tank（2）, vavuum pump（3）, the rectifying still
（1）Upper end is communicated with rectifying column（4）, it is characterised in that：The rectifying column（4）First pass through pipeline a（5）With surge tank（2）Top
Feeding mouth（21）Connection, the feeding mouth（21）Side is provided with two bleeding points, and a bleeding point passes through pipeline b（6）Pump is rushed with water（8）
Connection, another bleeding point pass through pipeline c（7）With vavuum pump（3）Connection.
A kind of 2. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 1, it is characterised in that：The pipeline c（7）In
Between position be communicated with activated carbon acidity absorber（9）.
A kind of 3. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 2, it is characterised in that：The activated carbon is acid
Absorber（9）In be provided with multiple active carbon slabs of circle（12）.
A kind of 4. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 3, it is characterised in that：It is described circular living two-by-two
Property carbon slab（12）Between pass through circular filter net（13）Support connection.
A kind of 5. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 4, it is characterised in that：The screen pack（13）
Size be：The mesh of 20 mesh~40.
A kind of 6. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 2, it is characterised in that：The activated carbon is acid
Absorber（9）Side pipeline c（7）It is provided with vacuum valve A（10）.
A kind of 7. 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system according to claim 1, it is characterised in that：The pipeline b（6）On
Provided with vacuum valve B（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334023.5U CN206652263U (en) | 2017-03-31 | 2017-03-31 | A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334023.5U CN206652263U (en) | 2017-03-31 | 2017-03-31 | A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206652263U true CN206652263U (en) | 2017-11-21 |
Family
ID=60316787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720334023.5U Expired - Fee Related CN206652263U (en) | 2017-03-31 | 2017-03-31 | A kind of 2-methyl-3-biphenylmethanol chlorination rectifying vacuum system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206652263U (en) |
-
2017
- 2017-03-31 CN CN201720334023.5U patent/CN206652263U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171121 Termination date: 20190331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |