CN207659350U - A kind of crystallization apparatus of beta-methylnaphthalene - Google Patents
A kind of crystallization apparatus of beta-methylnaphthalene Download PDFInfo
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- CN207659350U CN207659350U CN201721544474.8U CN201721544474U CN207659350U CN 207659350 U CN207659350 U CN 207659350U CN 201721544474 U CN201721544474 U CN 201721544474U CN 207659350 U CN207659350 U CN 207659350U
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- China
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- filter plate
- beta
- methylnaphthalene
- solvent
- crystallization apparatus
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Abstract
The utility model is related to a kind of crystallization apparatus of β methyl naphthalenes, it is by motor（1）, speed reducer（2）, feed inlet（3）, into solvent mouth（4）, frame type stirring（5）, chuck（6）, manhole（7）, discharge port（8）, take out solution mouth（9）, filter plate（10）Deng composition, this crystallization apparatus bottom is flat, installs one layer of filter plate（10）, it is close to filter plate（10）There are one discharge ports for top（8）, material in crystallizer can be all released, filter plate（10）There are one take out solvent mouth below（9）, solvent can be released and crystallize and stay in crystallizer.Double raisings of β methyl naphthalenes product quality and yield may be implemented using this crystallization apparatus and according to the operating method of regulation, and application apparatus is few, easy to operate, process safety environmental protection.
Description
Technical field
The utility model is related to a kind of crystallization apparatus of beta-methylnaphthalene, specifically a kind of beta-methylnaphthalene product quality and
The double crystallization apparatus improved of yield.
Background technology
Produce beta-methylnaphthalene product there is several methods that, wherein with the method that alcohols solvent is recrystallized due to product quality
Well, low energy consumption becomes the main stream approach of production beta-methylnaphthalene.This method using 80% or so beta-methylnaphthalene narrow fraction as raw material,
Using alcohols solvent as recrystallisation solvent, it is cooled to 0 DEG C~5 DEG C crystallizations in crystallizer, is more than with content is obtained after centrifuge
98% beta-methylnaphthalene product, this mold structure is simple, similar to common reaction kettle, chuck cooling, elliposoidal bottom,
There is stirring in centre.
Existing crystallization apparatus has one disadvantage in that, is exactly that yield is low, generally namely 60% or so.The low reason of yield is
There are many beta-methylnaphthalene be dissolved in solvent, yield can be improved to 80% or more to -10 DEG C~-5 DEG C by reducing crystallization temperature,
But product is off quality, and further corrective measure is the crystallization mode using two-step method come while ensureing product quality
Yield is improved, specific operating process is that beta-methylnaphthalene narrow fraction and alcohols solvent are added in crystallizer, is cooled to 0 DEG C~5 DEG C
Crystallization, then blowing centrifugation is dry, obtains qualified beta-methylnaphthalene product and first step centrifugate, first step centrifugate pour into
- 10 DEG C~-5 DEG C crystallisation by cooling are further cooled in another crystallizer, blowing centrifugation obtains underproof beta-methylnaphthalene,
This underproof beta-methylnaphthalene throws into crystallization raw material beta-methylnaphthalene narrow fraction the operation for repeating the first step again, to improve
Product yield, the beta-methylnaphthalene that the centrifugate of second step contains is seldom, and recycling is unnecessary, can be blended into washing oil
In.Two-step method ensure that product quality improves product yield again, be the production extraordinary method of beta-methylnaphthalene product, but deposit
The problems such as equipment is more, complex for operation step.
Invention content
The utility model aim is to provide a kind of new beta-methylnaphthalene crystallization apparatus, it can only be reached with a crystallizer
Improve the purpose of yield again to i.e. guarantee quality, while easy to operate.
New device by motor, speed reducer, feed inlet, into solvent mouth, manhole, chuck, frame type stirring, discharge port, take out it is molten
Agent mouth and filter plate composition.See Fig. 1.The key point of new crystallization apparatus is exactly crystalliser feet to be changed to by elliposoidal flat, increasing
Add one layer of filter plate, is close to filter plate top there are one discharge port, there are one solvent mouth is taken out below filter plate, crystallization apparatus new in this way is just
Centrifugation can all be released above filter plate whole materials by realizing, and crystallization can be stayed in crystallizer and only from filter
The function that solvent is released below plate.
In order to realize the double goal of beta-methylnaphthalene product high quality and high yield, in addition to this new crystallization must be used
Outside device, it is necessary to be operated as follows：
Step 1：The centrifugate for centrifuging out when 0 DEG C~5 DEG C crystallizations are added in the crystallization apparatus of beta-methylnaphthalene, is stirred
Lead to chilled brine under the conditions of mixing and cool to -10 DEG C~-5 DEG C crystallizations, is filtered by the pumping solvent mouth below filter plate, filtrate recycling is molten
It is blended into washing oil after agent, filter cake is underproof beta-methylnaphthalene；
Step 2：Continuously added in crystallization apparatus 50 DEG C or so of beta-methylnaphthalene narrow fraction and by second alcohol and water in mass ratio
4:The mass ratio of the double solvents of 1 ratio composition, beta-methylnaphthalene narrow fraction and solvent is 1:0.5,0 is cooled under stirring condition
DEG C~5 DEG C of crystallizations, and it is put into centrifuge and centrifuges from the discharge port above filter plate, it is dry, obtain the beta-methylnaphthalene that content is more than 98%
Centrifugate used in product and step 1.
New crystallization apparatus has reached the effect as the two-step crystallization method mentioned in foregoing Background with operating method
Fruit ensure that quality improves yield again, but have following advantage compared with two-step crystallization method：First, set of device is only used
It is achieved that guarantee the quality and puies forward the target of yield, reduce equipment investment；Secondly, two steps operation carries out in a crystallizer, subtracts
Lack primary centrifugation and the process that feeds intake again, simplifies operation；Further more, vacuum filtration process is closed progress, compare centrifugally operated
More safety and environmental protection.
Although the effect filtered in solid separation method is not as good as centrifugation, due to filtering the intermediate steps of only new method,
It also to mend material and mend solvent, so filtering can meet the requirements completely.In addition, if we improve the crystallization temperature of second step
Degree, beta-methylnaphthalene product quality will higher, but will be decreased obviously according to the process recovery ratio of original One-step crystallization, if using this
Then yield can still be maintained at 80% or more to device and method, so beta-methylnaphthalene product quality and yield may be implemented in the present apparatus
Double raisings.
It should be noted that this new crystallization apparatus is applicable not only to the crystallization operation of beta-methylnaphthalene product, similarly
Suitable for there is the crystallization operation of the other products of similar situation.
Description of the drawings
Fig. 1 is the interval vacuum distillation apparatus that original methyl naphthalene detaches
1- motors；2- speed reducers；3- feed inlets；4- is into solvent mouth；5- manholes；6- chucks；7- frame type stirrings；8- discharges
Mouthful；9- takes out solvent mouth；10- filter plates.
Specific implementation mode
Specific embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings：
Referring to Fig.1, beta-methylnaphthalene crystallization apparatus described in the utility model is by motor（1）, speed reducer（2）, feed inlet
（3）, into solvent mouth（4）, manhole（5）, chuck（6）, frame type stirring（7）, discharge port（8）, take out solvent mouth（9）, filter plate（10）Deng
Part forms.It is 8m with volume3Crystallizer for, be firstly added centrifuge out when 0 DEG C of 20 DEG C or so crystallization from
4 tons of heart liquid leads to chilled brine and cools to -10 DEG C of crystallizations, passes through filter plate under stirring condition（10）Following pumping solvent mouth（9）It takes out
It filters, is blended into washing oil after filtrate recycling design, filter cake is underproof beta-methylnaphthalene, and then the beta-methylnaphthalene of 50 DEG C of addition is narrow evaporates
4 tons and 2 tons of alcohols solvent, stirring is divided to cool to 0 DEG C, crystallization, from filter plate（10）Discharge port above（8）Be put into centrifuge from
The heart, it is dry, 2.72 tons of beta-methylnaphthalene is obtained, content 98.1%, yield 83.4%, centrifugate, which returns to, repeats front in crystallizer
Operation.
Claims (1)
1. a kind of crystallization apparatus of beta-methylnaphthalene, it is by motor（1）, speed reducer（2）, feed inlet（3）, into solvent mouth（4）, manhole
（5）, chuck（6）, frame type stirring（7）, discharge port（8）, take out solution mouth（9）, filter plate（10）Composition, it is characterised in that this crystallization
Bottom of device is flat, installs one layer of filter plate（10）, it is close to filter plate（10）There are one discharge ports for top（8）, can be crystallizer
Interior material is all released, filter plate（10）There are one take out solution mouth below（9）, solution can be released and crystallize and stay in crystallizer
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721544474.8U CN207659350U (en) | 2017-11-18 | 2017-11-18 | A kind of crystallization apparatus of beta-methylnaphthalene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721544474.8U CN207659350U (en) | 2017-11-18 | 2017-11-18 | A kind of crystallization apparatus of beta-methylnaphthalene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207659350U true CN207659350U (en) | 2018-07-27 |
Family
ID=62945900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721544474.8U Expired - Fee Related CN207659350U (en) | 2017-11-18 | 2017-11-18 | A kind of crystallization apparatus of beta-methylnaphthalene |
Country Status (1)
| Country | Link |
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| CN (1) | CN207659350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652156A (en) * | 2017-11-18 | 2018-02-02 | 辽宁科技学院 | A kind of method for crystallising and device of β methyl naphthalenes |
-
2017
- 2017-11-18 CN CN201721544474.8U patent/CN207659350U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652156A (en) * | 2017-11-18 | 2018-02-02 | 辽宁科技学院 | A kind of method for crystallising and device of β methyl naphthalenes |
| CN107652156B (en) * | 2017-11-18 | 2023-11-10 | 辽宁科技学院 | Crystallization method and device of beta-methylnaphthalene |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20201118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |