CN206577761U - It is a kind of to be used for lactated experimental rig - Google Patents
It is a kind of to be used for lactated experimental rig Download PDFInfo
- Publication number
- CN206577761U CN206577761U CN201720202976.6U CN201720202976U CN206577761U CN 206577761 U CN206577761 U CN 206577761U CN 201720202976 U CN201720202976 U CN 201720202976U CN 206577761 U CN206577761 U CN 206577761U
- Authority
- CN
- China
- Prior art keywords
- esterification
- reaction kettle
- heating
- lactide
- agitator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The utility model is related to a kind of for lactated experimental rig, including the reaction kettle of the esterification being sequentially connected, condenser, coolant circulation system, water receiving tank, lactide receiving tank, water ring vacuum pump, the reaction kettle of the esterification is provided with cast hopper, reaction kettle of the esterification top end is provided with deeply to the agitator inside reaction kettle of the esterification, the sealing system of the agitator is connected with hermetically sealed can, and be also connected respectively with gs-oil separator and heating medium for heating device on reaction kettle of the esterification side, it is connected at the top of the gs-oil separator with heating agent expansion drum, the heating medium for heating device is connected with heat medium circulation pump.The utility model small volume, flow is simple, is adapted to experiment and installs；Because reaction kettle of the esterification top and the bottom are connected with the heating medium for heating circulatory system, realize to the temperature control in reaction kettle of the esterification, again due to the water ring vacuum pump set in device, also indirectly realize to the Stress control in reaction kettle of the esterification, be easy to scientific research personnel's experimental study.
Description
Technical field
The utility model belongs to lactic acid polymerization studies application field, more particularly to a kind of to be filled for lactated experiment
Put.
Background technology
Lactic acid（Hydracrylic acid）The target product of esterification is lactide, and the preparation one of lactide has two methods.It is a kind of
Method is：Lactic acid and acetic anhydride, lactic acid and acetic anhydride are heated, lactide is generated, because the boiling point of acetic acid will be less than third
Lactide, when being synthesized with the method, contains substantial amounts of acetic acid, lactide can be hydrolyzed again in acid condition in the lactide steamed
Into lactic acid, the impurity in crude lactide is not only added, lactide yield is also reduced, so method is just with less.
Another method is that lactic acid vacuum is esterified distillation, and lactic acid can occur intermolecular de- in certain vacuum with a temperature of
Water, obtains lactide.The product of this method only has water in addition to lactide, as long as during the course of the reaction in time arranging water
Go out, so that it may obtain higher yield.But two kinds of reaction dehydrations may occur under heating and vacuum state, be respectively：Pre-polymerization and
Two molecule acid by dehydrating lactic generate a molecule lactide, when reaction starts based on the polymerization of lactic acid, when the molecular weight of oligomer reaches
When to a certain extent, the reaction temperature and vacuum of reaction kettle of the esterification are improved again, oligomer is cracked to form lactide again, this
Process is esterified chain rupture, and whole chain rupture esterification process constantly steams lactide, and reaction is towards positive direction movement, so as to improve the third friendship
The yield of ester.
It is lactated to generate target product lactide in high yield, the forward position of scientific research exploration is constantly in, and develop a kind of small
The lactated reactor of type, take up an area it is small, temperature, pressure can Automated condtrol, experimental record, analysis form automatically generate
Lactated experimental provision, expecting by numerous scientific research personnel always.
The content of the invention
The utility model aims to solve the problem that drawbacks described above, there is provided a kind of simple to operate, automaticity height, runs safety steady
Fixed is used for lactated experimental rig.
In order to overcome defect present in background technology, the utility model solves the technical scheme that its technical problem is used
It is：It is a kind of be used for lactated experimental rig, including be sequentially connected reaction kettle of the esterification, condenser, coolant circulation system,
Water receiving tank, lactide receiving tank, water ring vacuum pump, the reaction kettle of the esterification are provided with cast hopper, reaction kettle of the esterification top end
Provided with deeply to the agitator inside reaction kettle of the esterification, the sealing system of agitator is connected with hermetically sealed can, and reaction kettle of the esterification one
Also it is connected, is connected at the top of the gs-oil separator with heating agent expansion drum, institute with gs-oil separator and heating medium for heating device respectively on side
Heating medium for heating device is stated to be connected with heat medium circulation pump.
In a preferred embodiment of the present utility model, the cleaning reaction of system after the connection of lactide receiving tank bottom
Device.
In a preferred embodiment of the present utility model, agitator top respectively with water, cooling water backwater on cooling water
Connection.
The beneficial effects of the utility model are：The utility model small volume, flow is simple, is adapted to experiment and installs；Due to ester
Change reactor top and the bottom to be connected with the heating medium for heating circulatory system, realize to the temperature control in reaction kettle of the esterification, and due to device
The water ring vacuum pump of interior setting, is also indirectly realized to the Stress control in reaction kettle of the esterification, is easy to scientific research personnel's experiment to grind
Study carefully.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite
Define.
It is a kind of as shown in Figure 1 to be used for lactated experimental rig, including reaction kettle of the esterification 1, the condenser being sequentially connected
2nd, water receiving tank 4, lactide receiving tank 5, water ring vacuum pump 6, reaction kettle of the esterification 1 are provided with cast hopper 11, the esterification
Kettle 1 is jacket structured, and the condenser 2 connects coolant circulation system 3, and the top end of reaction kettle of the esterification 1, which is provided with, to be deeply extremely esterified
Agitator 12 inside reactor 1, the sealing system of agitator 12 is connected with hermetically sealed can 13, is sufficiently mixed, is accelerated esterification process,
And be also connected respectively with gs-oil separator 9 and heating medium for heating device 8 on the side of reaction kettle of the esterification 1, the top of gs-oil separator 9 and heating agent
Expansion drum 10 is connected, and heating medium for heating device 8 is connected with heat medium circulation pump 7, which constitutes a heating agent circulatory system, convenient to esterification
The control of reaction temperature.
Lactic acid material to be esterified is added into reaction kettle of the esterification 1 by cast hopper 11, is injected in the chuck of reaction kettle of the esterification 1
Heat conduction matchmaker, is conveyed and the control temperature of heating medium for heating device 8 by heat medium circulation pump 7, step by step, stage by stage gradually by temperature rise, and most
Control is at 200 DEG C eventually, after be back to gs-oil separator 9, the Volume Changes that heating agent expanded by heating is produced pass through heating medium expansion slot 10
Buffering is fallen, and oil water separator bottom is connected with the entrance of heat medium circulation pump 7, constitutes a heating agent circulatory system；It is esterified process of the test
The moisture and lactide of middle generation, the top gas phase jacket pipe of reaction kettle of the esterification 1 under 50pa vacuum system effect（Heating medium for heating
Insulation）, condensed device 2 is condensed, with coolant circulation system 3 by temperature control at 95 DEG C, reacts preliminary stage（Glue Free water,
Pre-polymerization, polycondensation）Produce water and be introduced into water receiving tank 4, react later stage（Fracture esterification）The lactide of generation enters lactide
Receiving tank 5, crude product of lactide is stored in lactide receiving tank 5, after be delivered to rear system again（Go to clean reactor）, water receiving tank
4 and the top fixed gas of lactide receiving tank 5 be discharged into air after water ring vacuum pump 6.
The top of agitator 12 is connected with water, cooling water backwater on cooling water respectively, with the temperature of cooling water control gear case oil
Degree is at 30-40 DEG C.
The sealing system of agitator 12 is connected with hermetically sealed can 13, it is ensured that the sealing system pressure of agitator 12 is in 0.1-
0.15MPa.g。
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (2)
1. a kind of be used for lactated experimental rig, it is characterised in that：Including the reaction kettle of the esterification being sequentially connected, condenser,
Water receiving tank, lactide receiving tank, water ring vacuum pump, the reaction kettle of the esterification are jacket structured, the condenser connection cooling
Fluid circulation.
2. it is used for lactated experimental rig according to claim 1, it is characterised in that：The reaction kettle of the esterification is provided with
Cast hopper, reaction kettle of the esterification top end is provided with deeply to the agitator inside reaction kettle of the esterification, the sealing system of the agitator
Be connected with hermetically sealed can, the sealing system of the agitator is connected with hermetically sealed can, and on reaction kettle of the esterification side also respectively with oil gas
It is connected at the top of separator and the connection of heating medium for heating device, the gs-oil separator with heating agent expansion drum, the heating medium for heating device and heat
Matchmaker's circulating pump is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202976.6U CN206577761U (en) | 2017-03-03 | 2017-03-03 | It is a kind of to be used for lactated experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202976.6U CN206577761U (en) | 2017-03-03 | 2017-03-03 | It is a kind of to be used for lactated experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206577761U true CN206577761U (en) | 2017-10-24 |
Family
ID=60113156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720202976.6U Active CN206577761U (en) | 2017-03-03 | 2017-03-03 | It is a kind of to be used for lactated experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206577761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582964A (en) * | 2021-08-23 | 2021-11-02 | 扬州惠通科技股份有限公司 | Lactide continuous production system and production method |
| CN113842657A (en) * | 2021-10-28 | 2021-12-28 | 北京工商大学 | Equipment for circularly preparing lactide |
-
2017
- 2017-03-03 CN CN201720202976.6U patent/CN206577761U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582964A (en) * | 2021-08-23 | 2021-11-02 | 扬州惠通科技股份有限公司 | Lactide continuous production system and production method |
| CN113582964B (en) * | 2021-08-23 | 2022-04-12 | 扬州惠通科技股份有限公司 | Lactide continuous production system and production method |
| CN113842657A (en) * | 2021-10-28 | 2021-12-28 | 北京工商大学 | Equipment for circularly preparing lactide |
| CN113842657B (en) * | 2021-10-28 | 2023-10-03 | 北京工商大学 | Equipment for circularly preparing lactide |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206577761U (en) | It is a kind of to be used for lactated experimental rig | |
| CN104844456A (en) | n-butylacrylate waste oil recovery process and n-butylacrylate waste oil recovery apparatus | |
| CN106431884B (en) | A kind of butyraldehyde oxidation prepares the device and method of butyric acid | |
| CN107779370A (en) | A kind of distilling device for producing white spirit | |
| CN104557537B (en) | In a kind of tower, reactive distillation produces the method for butyl acrylate | |
| YUAN et al. | Influence of vacuum degrees in rectification system on distillation characteristics of bio-oil model compounds | |
| CN112724071A (en) | Preparation method and equipment of hindered amine light stabilizer | |
| CN103102369B (en) | A kind of production method of diethyl ethylphosphate | |
| CN210229892U (en) | Polyester polyol automatic high-vacuum direct-pumping system | |
| CN105198739B (en) | The method and its device of tributyl 2-acetylcitrate semi-continuous production | |
| CN206566907U (en) | A kind of circulating energy-saving device of polymer stabilizer production equipment | |
| CN209468400U (en) | A kind of efficient destilling tower of rice bran oil | |
| CN208287520U (en) | Dropwise addition steams reaction unit | |
| CN206986067U (en) | A kind of SL-AH ester plasticiser esterification system | |
| CN207596754U (en) | A kind of pressure outer circulation reactor in n-propyl acetate production | |
| CN105801720A (en) | Production method of alginic acid trimethylene glycol ester | |
| CN111841478A (en) | Novel tubular anti-coking heat polymerization equipment | |
| CN214261851U (en) | Improved generation is dehydration tower for furfural production | |
| CN215209206U (en) | Vacuum process equipment | |
| CN206799495U (en) | A kind of semicontinuous class system of PET polyester of low vacuum | |
| Jin et al. | Study on the temperature field in the fermentation-extraction-distillation coupling device for biobutanol production | |
| CN204816455U (en) | A device for making plasticizer DOTP | |
| CN104368292B (en) | Anodic electrophoretic paint resin synthesis reaction kettle | |
| CN204644245U (en) | A kind of reactive system for unsaturated polyester resin | |
| CN202010445U (en) | On-line dehydration system used for main reaction equipment in diosmin production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |