CN219681704U

CN219681704U - Integrated reflux distillation device

Info

Publication number: CN219681704U
Application number: CN202320840550.9U
Authority: CN
Inventors: 徐勇; 陈嘉澍; 刘嘉炜
Original assignee: BASF Auxiliary Chemicals Co Ltd
Current assignee: BASF Advanced Chemicals Co Ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-09-15
Anticipated expiration: 2033-04-14

Abstract

The present utility model relates to an integrated reflux distillation apparatus comprising: a main tube having a first end and a second end, a main tube body extending between the first end and the second end; a condenser embedded in the main pipe from the first end portion; a first branch pipe and a second branch pipe extending from two sides of the main pipe body respectively; a third branch pipe extending obliquely from the second end of the main pipe to the first branch pipe and fluidly connecting the main pipe with the first branch pipe; a fourth branch pipe extending obliquely from the second end of the main pipe to the second branch pipe and fluidly connecting the main pipe with the second branch pipe; a return valve disposed in the third branch pipe; a distillation valve disposed in the fourth branch pipe; a flask sealingly connected to the end of the first branch tube; and a container sealingly connected to the end of the second branch pipe; wherein the reflux distillation apparatus is switchable between a reflux mode and a distillation mode by controlling opening and closing of the reflux valve and the distillation valve.

Description

Integrated reflux distillation device

Technical Field

The present utility model relates generally to the field of laboratory instruments, and more particularly to an integrated reflux distillation apparatus.

Background

Currently, in a laboratory, when an organic material is processed, for example, two sets of devices including reflux and distillation are required when the brake fluid is processed before the brake fluid GC (gas chromatography) test, three steps of cooling, transferring and heating again are required when the material is transferred from the reflux device to the distillation device, and a great deal of time is wasted. In addition, in a laboratory, only two sets of devices can be generally placed in one fume hood, and the laboratory has limited daily testing capacity due to limited space in the laboratory.

Disclosure of Invention

The utility model aims to provide an integrated reflux distillation device which not only occupies small space, but also can switch reflux and distillation, remarkably saves time and improves the daily test capacity of a laboratory.

Accordingly, the present utility model provides an integrated reflux distillation apparatus comprising a main pipe having a first end and a second end and a main pipe body extending between the first end and the second end; a condenser embedded in the main pipe from the first end portion; a first branch pipe and a second branch pipe which extend from two sides of the main pipe body respectively; a third branch pipe extending obliquely from said second end of the main pipe to the first branch pipe and fluidly connecting the main pipe with the first branch pipe; a fourth branch extending obliquely from said second end of the main pipe to the second branch and fluidly connecting the main pipe with the second branch; a return valve disposed in the third branch pipe; a distillation valve disposed in the fourth branch pipe; a flask sealingly connected to the end of the first branch tube; and a container sealingly connected to the end of the second branch pipe; wherein the integrated reflux distillation apparatus is switchable between reflux mode and distillation mode by controlling opening and closing of the reflux valve and the distillation valve.

In the integrated reflux distillation device, if the reflux mode is required to be switched to the distillation mode, only the switch of the switching valve is required, so that the time required for three steps of cooling, transferring and reheating when materials are transferred from the reflux device to the distillation device is saved. In addition, the reflux distillation device integrating the reflux function and the distillation function has the advantages that the occupied space is obviously reduced, four sets of the integrated reflux distillation devices can be placed in the same fume hood in a laboratory, and the daily test capacity of the laboratory is improved.

In one aspect of the utility model, the condenser is configured to include an outer condenser tube having a first inner end located within the main tube and a first outer end extending beyond the first end of the main tube, and an inner condenser tube having a second inner end located within the outer condenser tube and a second outer end extending beyond the first outer end, the condensate inlet being disposed at the second outer end, and the condensate outlet being disposed at the first outer end. It should be understood that the condensing medium employed by the condenser may be water, other condensing liquids, or air.

According to a preferred aspect of the utility model, the first inner end is closed end and provided with a deflector and is arranged close to the second end of the main tube, the second inner end having an aperture such that the outer condenser tube is in fluid communication with the inner condenser tube, wherein the outer condenser tube is configured to be rotatable relative to the main tube to adjust the orientation of the deflector. The outer condenser tube is configured such that in the reflux mode the deflector is directed towards the third branch tube; and in the distillation mode, the flow guide portion is directed toward the fourth branch pipe.

According to a preferred aspect of the present utility model, the first branch pipe is configured to have a horizontal section connected to the main pipe body and a vertical section connected to the flask; the second branch pipe is configured to have a horizontal section connected to the main pipe body and a vertical section connected to the vessel; wherein the third branch is connected to the vertical section of the first branch at a first location and the fourth branch is connected to the vertical section of the second branch at a second location, both of which are lower than the second end when the integrated reflux distillation device is in use.

According to a preferred aspect of the present utility model, the first branch pipe and the second branch pipe are arranged such that the horizontal section of the first branch pipe is lower than the horizontal section of the second branch pipe when the integrated reflux distillation device is in use.

In one aspect, the horizontal section of the first branch pipe may be connected to the main pipe body near the second end, and the horizontal section of the second branch pipe is connected to the main pipe body near the first end.

According to an advantageous embodiment of the utility model, a first gas port is provided in the horizontal section of the second branch pipe, and a first gas valve and a second gas port located between the first gas valve and the second gas valve are provided in the vertical section of the second branch pipe.

According to one aspect of the utility model, in said reflux mode, a reflux valve is open and said distillation valve is closed, the flask being for containing the organic material to be treated and receiving the liquid product refluxed after condensation; in the distillation mode, the reflux valve is closed and the distillation valve is opened, the flask being heated for containing the organic material to be treated and the vessel for containing the liquid product of the organic material after distillation.

According to one aspect of the utility model, in the reflux mode, a reflux valve is open and a distillation valve is closed, both the first gas valve and the second gas valve being open; in the distillation mode, the reflux valve is closed and the distillation valve is open, and both the first gas valve and the second gas valve are open.

According to a preferred embodiment of the present utility model, the integrated reflux distillation apparatus may be further configured to be capable of a purge mode in which the reflux valve, the distillation valve, and the second gas valve are all open and the first gas valve is closed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. Wherein:

fig. 1 shows a schematic structure of an integrated reflux distillation apparatus according to one embodiment of the present utility model.

Detailed Description

An integrated reflux distillation apparatus implemented according to the present utility model will be described below by way of example with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model to those skilled in the art. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. Furthermore, it should be understood that the utility model is not limited to specific described embodiments. Rather, the utility model can be considered to be implemented with any combination of the following features and elements, whether or not they relate to different embodiments.

Fig. 1 shows a schematic structure of an integrated reflux distillation apparatus according to one embodiment of the present utility model. As can be seen from the figure, this integrated reflux distillation apparatus 1 mainly comprises a main pipe 2, a condenser 3, a first branch pipe 11, a second branch pipe 12, a third branch pipe 13, a fourth branch pipe 14, a reflux valve 4, a distillation valve 5, a first flask 6 and a second flask 7. The main tube 2 has a first end 21, a second end 22 and a main tube body 20 extending between the first and second ends, the main tube body 20 defining a chamber for receiving the condenser 3, the condenser 3 being embedded in the main tube 2 from the open first end 21. In this embodiment, for example, the main pipe and each of the branch pipes and the condenser are made of glass, and the main pipe and each of the branch pipes are integrally formed, and fluid communication is provided between the main pipe and each of the branch pipes.

Referring again to the drawings, a first branch pipe 11 extends from one side of the main pipe body 20, the first branch pipe 11 having a horizontal section 111 connected to the main pipe body 20 and a vertical section 112 having a tip 110. From the opposite side of the main pipe body 20 extends a second branch pipe 12, which second branch pipe 12 has a horizontal section 121 connected to the main pipe body and a vertical section 122 with a tip 120, as shown in the figure, the horizontal section 111 of the first branch pipe 11 being lower than the horizontal section 121 of said second branch pipe 12. In particular, the horizontal section 111 of the first branch pipe 11 is connected to the main pipe body near this second end, and the horizontal section 121 of the second branch pipe 12 is connected to the main pipe body near the first end. Referring to fig. 1, a first flask 6 is sealingly connected to end 110 and a second flask 7 is sealingly connected to end 120. It should be understood that the second flask is merely exemplary and that other suitable containers may be selected as desired.

As can be seen in the figure, the third branch pipe 13 extends obliquely from (one side of) the second end 22 of the main pipe 2 to the vertical section 112 of the first branch pipe 11 to place the second end of the main pipe 2 in fluid communication with the first branch pipe 11, and the return valve 4 is arranged in this third branch pipe 13. The fourth branch pipe 14 extends obliquely from (the other side of) the second end 22 of the main pipe 2 to the vertical section 122 of the second branch pipe 12 to fluidly connect the second end of the main pipe 2 with the second branch pipe 12, and the distillation valve 5 is arranged in the fourth branch pipe 14. As can be seen from the figure, the direction of extension of the third branch 13 and the fourth branch 14 is at an angle, for example at an obtuse angle. And the third branch 13 is connected to the vertical section 112 of the first branch at a first position and the fourth branch 14 is connected to the vertical section 122 of the second branch at a second position, in particular from the figure, i.e. the integrated reflux distillation device is in use, both of which are lower than said second end, facilitating the flow of condensed liquid into the first flask or the second flask. In the above-described integrated reflux distillation apparatus, by controlling the opening and closing of the reflux valve 4 and the distillation valve 5, it is possible to switch between the reflux mode in which the reflux valve 4 is opened and the distillation valve 5 is closed; in the distillation mode, the reflux valve 4 is closed and the distillation valve 5 is opened.

Referring again to the drawings, in one embodiment of the condenser 3, the condenser 3 may comprise an outer condenser tube 31 and an inner condenser tube 32 fixedly embedded therein, wherein the outer condenser tube 31 has a first inner end 311 located within the main tube 2 and a first outer end 312 extending out of the first end of the main tube, the inner condenser tube 32 has a second inner end 321 located within the outer condenser tube and a second outer end 322 extending out of the first outer end, said second outer end being provided with a condensate inlet 8, said first outer end being provided with a condensate outlet 9. Alternatively, the second outer end may be provided with a condensate outlet and the first outer end may be provided with a condensate inlet.

In a preferred embodiment, a first inner end is configured as a closed end and provided with a deflector 310, and is arranged close to a second end of the main tube, the second inner end having an opening such that the outer condenser tube 31 is in fluid communication with the inner condenser tube 32, wherein the outer condenser tube 31 is configured to be rotatable relative to the main tube 2 for adjusting the orientation of the deflector. In the reflux mode, the outer condensing tube 31 may be rotated to direct the flow guide portion 310 toward the third branch tube 13, particularly, the inlet of the third branch tube, so that the organic material in the first flask is heated in the reflux operation, and the liquid, which is changed by the heated gas condensed by the condenser 3, flows down the tube wall of the outer condensing tube and flows back into the first flask 6 through the flow guide portion 310 and the third branch tube. In the distillation mode, the outer condensing tube 31 may be rotated so that the guide portion 310 is directed toward the fourth branch pipe 14, particularly, the inlet of the fourth branch pipe, so that the organic material having been subjected to the reflux treatment in the first flask is heated in the distillation operation, and the liquid, which is changed after the heated gas is condensed by the condenser 3, flows down the wall of the outer condensing tube and flows into the second flask 7 through the guide portion 310 and the fourth branch pipe 14.

In a preferred embodiment of the utility model, a first gas port 1210 is provided in the horizontal section 121 of the second branch 12, for example a branch shown in the figure as extending vertically upwards from the horizontal section, which branch is open at its end, which may be closed by a rubber plug or connected by a rubber hose to a gas collecting device (not shown). In the vertical section 122 of the second branch pipe 12 there is provided a first air valve 1221 and a second air valve 1222, between which the second air port 1220 is located, which second air port is similarly shown for example in the figures as a branch pipe extending horizontally outwards from the vertical section 122, which branch pipe is open at the end and which can likewise be closed by a rubber plug or connected by a rubber hose to an air collecting device (not shown). In the reflux mode of the integrated reflux distillation apparatus, the reflux valve 4 is opened, the distillation valve 5 is closed, and in order to achieve inert gas protection, the first air valve 1221 and the second air valve 1222 are both in an open state, and a protective gas such as inert gas, nitrogen gas is introduced from the first gas port and exits from the second gas port. In the distillation mode of the integrated reflux distillation apparatus, the reflux valve 4 is closed, the distillation valve 5 is opened, and in order to achieve the inert gas protection, the first air valve 1221 and the second air valve 1222 are both in an open state.

Advantageously, by configuring the first and second gas ports such that the integrated reflux distillation apparatus 1 can be configured in a purge mode, the reflux valve 4, the distillation valve 5, and the second gas valve 1222 are all in an open state while the first gas valve 1221 is in a closed state. The first air valve may be opened when the air in each pipe section of the integrated reflux distillation apparatus 1 is completely replaced, i.e., after the purge operation is completed. In the laboratory, before the organic material is subjected to the reflux and distillation treatment, the integrated reflux distillation apparatus 1 may be switched to a purge mode, a gas which is not liable to cause a chemical reaction of the organic material, such as nitrogen, is introduced from the first gas port or the second gas port, and air in the main pipe, each branch pipe, and the flask is purged to flow out the air from the second gas port or the first gas port.

While the utility model has been described in terms of preferred embodiments, the utility model is not so limited. Any person skilled in the art shall not depart from the spirit and scope of the present utility model and shall accordingly fall within the scope of the utility model as defined by the appended claims.

Claims

1. The integrated reflux distillation device (1) is characterized by comprising:

a main tube (2) having a first end (21) and a second end (22), a main tube body (20) extending between the first end and the second end;

a condenser (3) embedded in the main pipe (2) from said first end portion;

a first branch pipe (11) and a second branch pipe (12) extending from two sides of the main pipe body (20) respectively;

a third branch pipe (13) extending obliquely from said second end of the main pipe (2) to the first branch pipe (11) and fluidly connecting the main pipe with the first branch pipe (11);

a fourth branch (14) extending obliquely from said second end of the main pipe (2) to the second branch (12) and fluidly connecting the main pipe with the second branch (12);

a return valve (4) arranged in the third branch pipe (13);

a distillation valve (5) arranged in the fourth branch (14);

a flask sealingly connected to the end of the first branch pipe (11); and

a container sealingly connected to the end of the second branch pipe (12);

wherein the integrated reflux distillation device (1) is switchable between a reflux mode and a distillation mode by controlling the opening and closing of the reflux valve (4) and the distillation valve (5).

2. The integrated reflux distillation device according to claim 1, wherein said condenser (3) comprises an outer condenser tube (31) and an inner condenser tube (32) fixedly embedded in the outer condenser tube, wherein the outer condenser tube (31) has a first inner end (311) located in said main tube (2) and a first outer end (312) extending out of said first end of the main tube, the inner condenser tube (32) has a second inner end (321) located in the outer condenser tube and a second outer end (322) extending out of the first outer end, a condensate inlet (8) is provided at said second outer end, and a condensate outlet (9) is provided at said first outer end.

3. The integrated reflux distillation device according to claim 2, wherein the first inner end is closed end and provided with a deflector (310), which first inner end is arranged close to the second end of the main tube, which second inner end has an opening such that the outer condenser tube (31) is in fluid communication with the inner condenser tube (32), wherein the outer condenser tube (31) is configured to be rotatable relative to the main tube (2) for adjusting the orientation of the deflector.

4. The integrated reflux distillation device according to claim 1, wherein said first branch pipe (11) has a horizontal section connected to the main pipe body and a vertical section connected to said flask; the second branch pipe (12) has a horizontal section connected to the main pipe body and a vertical section connected to the vessel; the third branch (13) is connected to the vertical section of the first branch at a first position and the fourth branch (14) is connected to the vertical section of the second branch at a second position, both of which are lower than the horizontal position of the second end when the integrated reflux distillation device is in use.

5. The integrated reflux distillation device according to claim 4, wherein the horizontal section of said first branch (11) is lower than the horizontal section of said second branch (12) when said integrated reflux distillation device is in use.

6. The integrated reflux distillation device according to claim 5, wherein the horizontal section of said first branch pipe (11) is connected to said main pipe body near the second end, and the horizontal section of said second branch pipe (12) is connected to said main pipe body near the first end.

7. The integrated reflux distillation device according to claim 4, characterized in that a first gas port (1210) is provided in the horizontal section of the second branch pipe (12), a first gas valve (1221) and a second gas valve (1222) and a second gas port (1220) between the first gas valve and the second gas valve are provided in the vertical section of the second branch pipe (12).

8. Integrated reflux distillation device according to one of claims 1 to 7, characterized in that in the reflux mode the reflux valve (4) is open and the distillation valve (5) is closed, the flask being intended to contain the organic material to be treated and to receive the liquid product of the reflux after condensation; in the distillation mode, the reflux valve (4) is closed and the distillation valve (5) is opened, the flask being heated for containing the organic material to be treated and the vessel containing the liquid product of the organic material after distillation.

9. The integrated reflux distillation device according to claim 7, characterized in that in the reflux mode the reflux valve (4) is open and the distillation valve (5) is closed, the first and second gas valves being both open; in the distillation mode, the reflux valve (4) is closed and the distillation valve (5) is open, the first and second gas valves being both open.

10. The integrated reflux distillation device according to claim 7, wherein the integrated reflux distillation device (1) is configurable in a purge mode in which the reflux valve (4), the distillation valve (5), and the second gas valve (1222) are all open, while the first gas valve (1221) is closed.