CN203593710U - Reaction device used for preparing L-carnitine - Google Patents
Reaction device used for preparing L-carnitine Download PDFInfo
- Publication number
- CN203593710U CN203593710U CN201320696190.6U CN201320696190U CN203593710U CN 203593710 U CN203593710 U CN 203593710U CN 201320696190 U CN201320696190 U CN 201320696190U CN 203593710 U CN203593710 U CN 203593710U
- Authority
- CN
- China
- Prior art keywords
- valve
- injector
- trimethylamine
- retort
- carnitine
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a reaction device that is high in yield, less in by-products, suitable for mass production and used for preparing L-carnitine. The reaction device comprises a reaction tank, wherein the reaction tank is provided with a stirring blade and a first temperature control jacket; the bottom discharge opening of the reaction tank is connected with a material discharge pipe provided with a blow-off valve; an injector is arranged at the top of the reaction tank; the outlet of the injector is communicated with an inner chamber of the reaction tank; the main inlet of the injector is communicated with the outlet of a circulating pump through a main pipeline; the inlet of the circulating pump is communicated with the bottom discharge opening of the reaction tank through a circulating pipe; a circulating valve is arranged on the circulating pipe; the by-pass auxiliary inlet of the injector is communicated the air outlet of a buffer tank through an auxiliary pipeline; an auxiliary control valve is arranged on the auxiliary pipeline; the air inlet of the buffer tank is communicated with the air outlet of a trimethylamine storage tank provided with a second temperature control jacket through a buffer tube; cushion valves are arranged on the buffer tube; the trimethylamine storage tank is arranged on a weighing machine.
Description
Technical field
The utility model relates to a kind of reaction unit that L-carnitine is prepared in asymmetric catalytic hydrogenation reduction of applying.
Background technology
It is take 4-halo methyl aceto acetate as raw material that L-carnitine is prepared in the reduction of application asymmetric catalytic hydrogenation, adopts catalyzer, obtains L-carnitine through amination, hydrolysis reaction.Generally adopt at present trimethylamine aqueous solution to carry out amination reaction.
The shortcoming that above-mentioned amination reaction exists is: trimethylamine aqueous solution boiling point is relatively low, for avoiding Trimethylamine 99 to overflow contaminate environment under normal pressure, amination reaction need to carry out under cold condition, and under cold condition, the amination reaction time is long, side reaction is many, reaction yield is low; In reaction process, the water yield is large, aftertreatment is difficult; And because trimethylamine aqueous solution is Class A inflammable substance, be a kind of most evil stink substance, transportation difficulty, cannot make a big purchase industrialized trimethylamine aqueous solution in large quantities on market, generally sells with Trimethylamine 99 gas bomb.
Utility model content
The technical problems to be solved in the utility model is: provide that a kind of yield is high, by product is few, be suitable for the reaction unit for the preparation of L-carnitine of scale operation.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme.
For the preparation of the reaction unit of L-carnitine, comprise the retort with paddle and the first temperature control chuck, the bottom discharging mouth of retort is connected with the drainage conduit with blow-off valve; Be characterized in: be provided with injector at retort top, the outlet of injector communicates with retort inner chamber, the main import of injector is connected with circulation pump outlet by main pipeline, the import of recycle pump is connected with the discharge gate of retort bottom by circulation tube, is provided with recycle valve on circulation tube; The secondary import of bypass of injector is connected with the air outlet of surge tank by secondary duct, in secondary duct, be provided with sub-control valve, the inlet mouth of surge tank is connected with the air outlet of the Trimethylamine 99 basin with the second temperature control chuck by buffer tube, is provided with cushion valve on buffer tube; Trimethylamine 99 basin is arranged on weighing apparatus.
Further, the aforesaid reaction unit for the preparation of L-carnitine, wherein: on surge tank, be also provided with safety valve and tensimeter, be provided with the blow-off pipe with wash water valve in surge tank bottom.
Further, the aforesaid reaction unit for the preparation of L-carnitine, wherein: on Trimethylamine 99 basin, be provided with the evacuation port with exhaust-valve.
The beneficial effects of the utility model: utilize described reaction unit can adopt Trimethylamine 99 gas directly to carry out amination reaction, reaction yield is high, by product is few; And speed of response is fast, catalyst system is stable, the required pressure of reaction process is low, easy to operate, transformation efficiency is high, thereby can reduce costs and reduce environmental pollution, is convenient to large-scale production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the reaction unit for the preparation of L-carnitine described in the utility model.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the reaction unit for the preparation of L-carnitine described in the utility model is further described.
Shown in Figure 1, the reaction unit for the preparation of L-carnitine described in the utility model, comprises the retort 1 with paddle 11 and the first temperature control chuck 12, and the bottom discharging mouth of retort 1 is connected with the drainage conduit 14 with blow-off valve 13; Be provided with injector 15 at retort 1 top, the outlet of injector 15 communicates with retort 1 inner chamber, the main import of injector 15 is connected with the outlet of recycle pump 2 by main pipeline 16, the import of recycle pump 2 is connected with the discharge gate of retort 1 bottom by circulation tube 17, is provided with recycle valve 18 on circulation tube 17; The secondary import of bypass of injector 15 is connected with the air outlet of surge tank 3 by secondary duct 19, in secondary duct 19, be provided with sub-control valve 31, the inlet mouth of surge tank 3 is connected with the air outlet of the Trimethylamine 99 basin 4 with the second temperature control chuck 41 by buffer tube 35, is provided with cushion valve 34 on buffer tube 35; Trimethylamine 99 basin 4 is arranged on weighing apparatus 5.In the present embodiment, on surge tank 3, be also provided with safety valve 33 and tensimeter 32, be provided with the blow-off pipe 37 with wash water valve 36 in surge tank 3 bottoms, on Trimethylamine 99 basin 4, be provided with the evacuation port with exhaust-valve 42.
The principle of work of the reaction unit for the preparation of L-carnitine described in the utility model is as follows: can make the Trimethylamine 99 gas in Trimethylamine 99 basin 4 flow out relatively rapidly by the second temperature control chuck 41, material in retort 1 pumps into injector 15 by recycle pump 2 and enters in the process of retort 1, the secondary import meeting of bypass in injector 15 forms negative pressure, Trimethylamine 99 gas, from the secondary import sucting reaction of the bypass tank 1 of injector 15, is reacted with material.Weighing apparatus 5 can accurate-metering Trimethylamine 99 consumption, be convenient to monitor the consumption of Trimethylamine 99 in reaction process and do not cause waste.Utilize the first temperature control chuck 12 can control the temperature of reaction in retort 1.
Reaction unit for the preparation of L-carnitine described in the utility model, can adopt Trimethylamine 99 gas directly to carry out amination reaction, and reaction yield is high, by product is few; And speed of response is fast, catalyst system is stable, the required pressure of reaction process is low, easy to operate, transformation efficiency is high, thereby can reduce costs and reduce environmental pollution, is convenient to large-scale production.
Claims (3)
1. for the preparation of the reaction unit of L-carnitine, comprise the retort with paddle and the first temperature control chuck, the bottom discharging mouth of retort is connected with the drainage conduit with blow-off valve; It is characterized in that: be provided with injector at retort top, the outlet of injector communicates with retort inner chamber, the main import of injector is connected with circulation pump outlet by main pipeline, the import of recycle pump is connected with the discharge gate of retort bottom by circulation tube, is provided with recycle valve on circulation tube; The secondary import of bypass of injector is connected with the air outlet of surge tank by secondary duct, in secondary duct, be provided with sub-control valve, the inlet mouth of surge tank is connected with the air outlet of the Trimethylamine 99 basin with the second temperature control chuck by buffer tube, is provided with cushion valve on buffer tube; Trimethylamine 99 basin is arranged on weighing apparatus.
2. the reaction unit for the preparation of L-carnitine according to claim 1, is characterized in that: on surge tank, be also provided with safety valve and tensimeter, be provided with the blow-off pipe with wash water valve in surge tank bottom.
3. the reaction unit for the preparation of L-carnitine according to claim 1 and 2, is characterized in that: on Trimethylamine 99 basin, be provided with the evacuation port with exhaust-valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696190.6U CN203593710U (en) | 2013-11-07 | 2013-11-07 | Reaction device used for preparing L-carnitine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696190.6U CN203593710U (en) | 2013-11-07 | 2013-11-07 | Reaction device used for preparing L-carnitine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203593710U true CN203593710U (en) | 2014-05-14 |
Family
ID=50674609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320696190.6U Withdrawn - After Issue CN203593710U (en) | 2013-11-07 | 2013-11-07 | Reaction device used for preparing L-carnitine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203593710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570572A (en) * | 2013-11-07 | 2014-02-12 | 苏州浩波科技股份有限公司 | Reaction device for preparing L-carnitine |
-
2013
- 2013-11-07 CN CN201320696190.6U patent/CN203593710U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570572A (en) * | 2013-11-07 | 2014-02-12 | 苏州浩波科技股份有限公司 | Reaction device for preparing L-carnitine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |