CN213285706U

CN213285706U - Rectification separation device for dimethoxypropane preparation

Info

Publication number: CN213285706U
Application number: CN202021801898.XU
Authority: CN
Inventors: 吴鹏程
Original assignee: Wuxi Further Pharmaceutical Co ltd
Current assignee: Wuxi Further Pharmaceutical Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-05-28
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a rectification separation device is used in dimethoxy propane preparation belongs to rectification technical field. The rectification separation device comprises an outer tank, an inner tank arranged in the outer tank, a reboiler and a condenser arranged outside the outer tank, and an interlayer arranged between the outer side wall of the inner tank and the inner side wall of the outer tank. The explosion-proof agent is filled in the interlayer, the inner wall of the outer tank is connected with the arc-shaped metal strip, and the inner wall of the inner tank is provided with the explosion-proof layer, so that the explosion-proof effect is well realized; the input end of the booster pump is connected with the filter pipe, so that residual catalyst solid matters can be filtered by the filter screen when the mixed material enters the inner tank, and the rectification effect is prevented from being influenced; in addition, a hydrolysis component is arranged in the inner tank, so that the mixed material is prevented from being hydrolyzed in the rectification process, and the purity of the rectified dimethoxypropane is further improved.

Description

Rectification separation device for dimethoxypropane preparation

Technical Field

The utility model relates to a pharmaceutical equipment field, concretely relates to rectification separator is used in dimethoxy propane preparation.

Background

Rectification is a separation process in which the components in a mixture are separated by virtue of their different volatilities, and the conventional equipment includes a plate-type rectification column and a packed rectification column. The principle and equipment flow of the precise rectification are the same as those of the common rectification, but the relative volatility of the components in the substance system to be separated is small, so that the separation and purification of the components to be separated are realized by adopting the high-efficiency precise packing.

The prior art has the following problems: the dimethoxypropane is subjected to rectification separation operation in the preparation and synthesis process, due to the physicochemical property of the dimethoxypropane, if improper operation occurs or other conditions occur in the rectification process, the tank body of the rectification reaction can explode, in addition, a mixture for synthesizing the dimethoxypropane can be doped with a part of unreacted catalyst solid added in the preparation operation before, the mixed reaction material doped with the solid can influence the rectification effect by directly introducing the mixed reaction material, meanwhile, the reactant in the dimethoxypropane rectification process is easy to generate hydrolysis reaction, and the rectification effect can be further influenced.

In view of the above, there is a need for an improved separation device in the prior art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a rectification separation device is used in dimethoxy propane preparation has explosion-proof effectual, optimizes rectification effect characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a rectification separation device is used in dimethoxy propane preparation, includes outer jar, the internally mounted of outer jar has the inner tank, and reboiler and condenser are installed in the outside of outer jar, the internally mounted of inner tank has guiding device, and the outside of inner tank is provided with explosion-proof subassembly, explosion-proof subassembly includes explosion-proof agent, arc metal strip, explosion-proof layer and barometer, wherein, the top of inner tank is connected with the barometer, and is provided with the intermediate layer between the lateral wall of inner tank and the inside wall of outer jar, interbedded inside packing has the explosion-proof agent, the inboard of outer jar is connected with the arc metal strip.

Preferably, the arc-shaped surface of the arc-shaped metal strip is tangent to the outer side wall of the inner tank.

Preferably, the explosion-proof agent is a powdery substance consisting of sodium bicarbonate, talcum powder, mica powder and stearic acid, and the explosion-proof layer is a Kevlar fiber layer.

Preferably, the reboiler pass through the catheter with the inner tank is connected, the top of inner tank is installed out the hopper, the one end that goes out the hopper and extend to outer top of outer jar is passed through the discharging pipe and is connected with the condenser.

Preferably, the lower extreme of condenser is connected with installs the flow back box in the outer jar outside, the bottom of flow back box is connected with the case that gathers materials, just the flow back box passes through the back flow and is connected with the inner tank, the valve is installed in the outside of back flow.

Preferably, the outside of outer jar is provided with the filter material subassembly, the filter material subassembly includes inlet pipe, filter screen, booster pump, passage and filter tube, wherein, the input of filter tube with the inlet pipe intercommunication, the output of filter tube with the input of booster pump is connected, the output of booster pump passes through the passage and is connected with the inner tank, the internally mounted of filter tube has the filter screen.

Preferably, the inner top end of the inner tank is provided with a hydrolysis-preventing component, the hydrolysis-preventing component comprises a bearing frame and a bearing box, and the bearing box is arranged inside the bearing frame.

Preferably, the inside of the housing is filled with a mixture of sodium bicarbonate and sodium methoxide.

Preferably, tank doors are installed on the outer sides of the outer tank and the inner tank, and door handles are installed on the outer sides of the tank doors.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model has the advantages that the explosion-proof agent composed of sodium bicarbonate, talcum powder, mica powder and stearic acid is filled in the interlayer, the inner wall of the outer tank is connected with the arc-shaped metal strip with the arc surface tangent to the outer side wall of the inner tank, and meanwhile, the inner wall of the inner tank is provided with the explosion-proof layer, so that the structure can well realize the explosion-proof function;

2. the utility model discloses a connect the filter tube of internally mounted with the filter screen at the input of booster pump, can filter remaining catalyst solid-state thing by the filter screen when the misce bene gets into the inner tank inside through the inlet pipe like this, the existence of avoiding impurity influences the rectification effect, the holding that sets up on the top in the inner tank puts in addition places the inside container box that is provided with sodium bicarbonate and sodium methoxide mixture, this kind of structure can avoid the misce bene to take place to hydrolyze at the rectification in-process, further improve the purity of the dimethoxy propane that the rectification obtained.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the external view structure of the present invention;

FIG. 3 is a schematic structural view of the explosion-proof assembly of the present invention;

FIG. 4 is a schematic structural view of the filter material assembly of the present invention;

FIG. 5 is a schematic structural view of the hydrolysis preventing assembly of the present invention;

in the figure: 1. an inner tank; 2. an explosion-proof assembly; 21. an explosion-proof agent; 22. an arc-shaped metal strip; 23. an explosion-proof layer; 24. a barometer; 3. a filter material component; 31. a feed pipe; 32. filtering with a screen; 33. a booster pump; 34. a material guide pipe; 35. a filter tube; 4. an outer tank; 5. a catheter; 6. a reboiler; 7. a flow guide device; 8. a return pipe; 9. a material collecting box; 10. a return tank; 11. a valve; 12. a condenser; 13. an interlayer; 14. a discharge pipe; 15. a discharge hopper; 16. a hydrolysis prevention component; 161. a bearing frame; 162. a container box; 17. a door handle; 18. a tank door.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a rectification separation device is used in dimethoxy propane preparation, including outer jar 4, the internally mounted of outer jar 4 has inner tank 1, and reboiler 6 and condenser 12 are installed in the outside of outer jar 4, the internally mounted of inner tank 1 has guiding device 7, and the outside of inner tank 1 is provided with explosion-proof assembly 2, explosion-proof assembly 2 includes explosion-proof agent 21, arc metal strip 22, explosion-proof layer 23 and barometer 24, wherein, the top of inner tank 1 is connected with barometer 24, and be provided with intermediate layer 13 between the lateral wall of inner tank 1 and the inside wall of outer jar 4, the inside packing of intermediate layer 13 has explosion-proof agent 21, the inboard of outer jar 4 is connected with arc metal strip 22.

In one embodiment, the arc-shaped surface of the arc-shaped metal strip 22 is tangent to the outer sidewall of the inner vessel 1. The explosion-proof agent 21 is a powdery substance consisting of sodium bicarbonate, talcum powder, mica powder and stearic acid, and the explosion-proof layer 23 is a Kevlar fiber layer.

By adopting the technical scheme, the arc-shaped metal strip 22 can be used for pressure buffering when the explosion happens carelessly, and the explosion range can be further controlled by matching with the arrangement of the explosion-proof agent 21 and the explosion-proof layer 23.

In one embodiment, the reboiler 6 is connected to the inner tank 1 through a liquid guide pipe 5, a discharge hopper 15 is installed at the top end of the inner tank 1, and one end of the discharge hopper 15 extending to the outer top end of the outer tank 4 is connected to the condenser 12 through a discharge pipe 14. The lower extreme of condenser 12 is connected with the return tank 10 of installing in the outer tank 4 outside, and the bottom of return tank 10 is connected with the case 9 that gathers materials, and return tank 10 is connected with inner tank 1 through back flow 8, and the valve 11 is installed in the outside of back flow 8.

Through adopting above-mentioned technical scheme, the misce bene gets into inside 1 inner tank, 6 work of reboiler is carried out the rectification in continuously getting into inner tank 1 with vapor through catheter 5, treat that dimethoxy propane and azeotrope gasification in the rectification mixture, with gaseous form spiral shell screwing in under the water conservancy diversion of guiding device 7, gaseous dimethoxy propane and azeotrope follow discharging pipe 14 and get into condenser 12 and backflow box 10 in and carry out the cooling reflux and handle, liquefied dimethoxy propane gets into in the case 9 that gathers materials, the component that does not liquefy continues the rectification in flowing back into inner tank 1 along back flow 8 and handles.

In an embodiment, a filter material assembly 3 is arranged outside the outer tank 4, the filter material assembly 3 includes a feeding pipe 31, a filter screen 32, a booster pump 33, a material guiding pipe 34 and a filtering pipe 35, wherein an input end of the filtering pipe 35 is communicated with the feeding pipe 31, an output end of the filtering pipe 35 is connected with an input end of the booster pump 33, an output end of the booster pump 33 is connected with the inner tank 1 through the material guiding pipe 34, and the filter screen 32 is installed inside the filtering pipe 35.

By adopting the technical scheme, the mixed material enters the filter pipe 35 through the feeding pipe 31, then the residual catalyst solid is filtered by the filter screen 32, and the obtained mixture enters the inner tank 1 under the action of the booster pump 33 for rectification and separation operation.

In an embodiment, the inner top end of the inner tank 1 is provided with the hydrolysis preventing assembly 16, and the hydrolysis preventing assembly 16 comprises a bearing frame 161 and a bearing box 162, wherein the bearing box 162 is arranged inside the bearing frame 161. Preferably, the interior of the housing box 162 is filled with a mixture of sodium bicarbonate and sodium methoxide.

By adopting the technical scheme, the filler in the solvent box 162 can avoid the hydrolysis of the rectification mixed material of the dimethoxypropane in the rectification process.

Specifically, tank doors 18 are mounted on the outer sides of the outer tank 4 and the inner tank 1, and door handles 17 are mounted on the outer sides of the tank doors 18.

Through adopting above-mentioned technical scheme, can conveniently realize getting of receiving box 162 through opening jar door 18 and put.

The working principle of the middle reboiler 6, the flow guide device 7 and the condenser 12 of the utility model is disclosed in a 2, 2-dimethoxypropane continuous rectification device disclosed in the Chinese patent application No. 201821958150.3.

The utility model discloses middle-pressure gauge 24 is the prior art that has disclosed, and the model of chooseing for use is Y-M diaphragm pressure gauge.

The utility model discloses well booster pump 33 is the prior art of disclosing, and the model of chooseing for use is CDLF20-30 vertical multistage centrifugal pump.

The utility model discloses a theory of operation and use flow: the utility model discloses during operation mixture gets into in the filter tube 35 through inlet pipe 31, then filters through filter screen 32 and filters the dimethoxy propane preparation residual catalyst solid-state thing before synthetic, and the mixture that obtains then gets into inner tank 1 under the effect of booster pump 33 and carries out rectification separation operation, and this kind of structure can avoid the existence of catalyst solid-state thing to influence the effect of rectification to improve the efficiency of rectification, then realize the rectification separation operation to the mixture under the cooperation work of reboiler 6, guiding device 7 and condenser 12;

the utility model discloses open jar door 18 before carrying out the rectification operation, then place the inside of holding frame 161 with the container box 162 that the inside was filled with sodium bicarbonate and sodium methoxide mixture, this kind of structure can avoid the condition that dimethoxy propane mixture takes place to hydrolyze in the rectification process, further optimizes the effect of rectification to obtain the dimethoxy propane that the purity is higher;

the utility model discloses an inner wall at inner tank 1 sets up the explosion-proof layer 23 that the structure is Kevlar fibre layer to play explosion-proof effect, intermediate layer 13 intussuseption is filled with explosion-proof agent 21 of constituteing by sodium bicarbonate, talcum powder, mica powder and stearic acid simultaneously, and this kind of structure cooperates the explosion of arc metal strip 22 to explosion pressure when carelessly exploding and can avoid inner tank 1 to further influence outer jar 4 to explode, thereby control explosion range.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A rectification separation device for preparing dimethoxypropane comprises an outer tank (4), and is characterized in that: the utility model discloses a boiler, including outer jar (4), reboiler (6) and condenser (12) are installed to the internally mounted of outer jar (4), and the outside of outer jar (4) installs reboiler (6), the internally mounted of inner jar (1) has guiding device (7), and the outside of inner jar (1) is provided with explosion-proof subassembly (2), explosion-proof subassembly (2) are including explosion-proof agent (21), arc metal strip (22), explosion-proof layer (23) and barometer (24), wherein, the top of inner jar (1) is connected with barometer (24), and is provided with intermediate layer (13) between the lateral wall of inner jar (1) and the inside wall of outer jar (4), the inside packing of intermediate layer (13) has explosion-proof agent (21), the inboard of outer jar (4) is connected with arc metal strip (22).

2. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: the arc-shaped surface of the arc-shaped metal strip (22) is tangent to the outer side wall of the inner tank (1).

3. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: the explosion-proof agent (21) is a powdery substance consisting of sodium bicarbonate, talcum powder, mica powder and stearic acid, and the explosion-proof layer (23) is a Kevlar fiber layer.

4. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: reboiler (6) through catheter (5) with inner tank (1) is connected, go out hopper (15) are installed on the top of inner tank (1), go out hopper (15) extend to the one end on outer tank (4) outer top and through discharging pipe (14) with condenser (12) are connected.

5. The rectification separation device for dimethoxypropane preparation according to claim 4, wherein: the lower extreme of condenser (12) is connected with installs return tank (10) in outer jar (4) outside, the bottom of return tank (10) is connected with collection workbin (9), just return tank (10) pass through back flow (8) with inner tank (1) is connected, valve (11) are installed in the outside of back flow (8).

6. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: the outside of outer jar (4) is provided with filter material subassembly (3), filter material subassembly (3) include inlet pipe (31), filter screen (32), booster pump (33), passage (34) and filter tube (35), wherein, the input of filter tube (35) with inlet pipe (31) intercommunication, the output of filter tube (35) with the input of booster pump (33) is connected, the output of booster pump (33) passes through passage (34) and is connected with inner tank (1), the internally mounted of filter tube (35) has filter screen (32).

7. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: the inner top end of the inner tank (1) is provided with an anti-hydrolysis assembly (16), the anti-hydrolysis assembly (16) comprises a bearing frame (161) and a bearing box (162), and the bearing box (162) is arranged inside the bearing frame (161).

8. The rectification separation device for dimethoxypropane preparation according to claim 7, characterized in that: the inside of the container (162) is filled with a mixture of sodium bicarbonate and sodium methoxide.

9. The rectification separation device for dimethoxypropane preparation according to claim 1, which is characterized in that: jar door (18) are all installed in the outside of outer jar (4) and inner tank (1), door handle (17) are installed in the outside of jar door (18).