A laboratory biochemistry gas separation and purification device

Abstract

The present invention relates to the technical field of separation and purification, and specifically discloses a laboratory biochemistry gas separation and purification device, including a condenser with an air inlet opened at the top, a reflux upper pipe connected to the side of the condenser, the condenser is fixedly installed on the top of the tower top tank, the bottom surface of the tower top tank is funnel-shaped and has a liquid outlet opened at the bottom end, the tower body is fixedly connected to the bottom of the tower top tank, the liquid outlet is inserted into the top opening of the tower body, the tower kettle is fixedly connected to the bottom of the tower body, a lower liquid outlet is opened at the bottom of the tower kettle, a reflux lower pipe is connected to the side of the tower kettle, the reflux lower pipe is connected to the reflux upper pipe, a solvent is contained in the tower kettle, and a steam generator is connected to the side wall of the tower kettle; by setting each component, a low-temperature rectification system suitable for laboratory research operations is formed, with a simple structure, a reasonable process, a low operation difficulty, low energy consumption, and at the same time ensuring the purity and efficiency of separation and purification.

Description

Technical Field

[0001] The present invention relates to the technical field of separation and purification, and specifically to a device for separating and purifying biochemistry gases in a laboratory. Background Art

[0002] When conducting research in the field of biochemistry in a laboratory, it is often necessary to separate and purify biochemistry gases with complex components. There are various existing gas separation and purification methods, including condensation and distillation, absorption, adsorption, and membrane separation, etc., which help people to choose according to the specific composition of the gas components. One of the separation and purification methods is called cryogenic rectification.

[0003] Cryogenic rectification, as the name implies, is to conduct rectification at a temperature lower than the boiling point temperature of a certain gas. The difference between cryogenic rectification and distillation is that it has two refluxes, namely liquid-phase reflux and gas-phase reflux. Currently, cryogenic rectification technology is adopted by many industrial gas production plants for industrialized batch preparation. Although cryogenic rectification has a good separation and purification effect on gas mixed components, its process is complex, the operation difficulty is large, and the energy consumption is high. Therefore, the common distillation method is still generally used for separating and purifying mixed gases during laboratory research. Thus, developing a cryogenic rectification device suitable for laboratory research has become an urgent problem for technicians to solve. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a device for separating and purifying biochemistry gases in a laboratory, which has the advantages of high purification purity and efficiency, low operation difficulty, being suitable for laboratory operation, and low energy consumption, and solves the problems that the common distillation separation and purification device has low purification purity and efficiency, while the industrial cryogenic rectification system has high energy consumption and large operation difficulty.

[0005] A device for separating and purifying biochemistry gases in a laboratory of the present invention includes a condenser, an air inlet is opened at the top of the condenser, and an upper reflux pipe is communicated with the side of the condenser; a top tank, the condenser is fixedly installed on the top of the top tank, the bottom surface of the top tank is funnel-shaped and a liquid outlet is opened at the bottom end; a tower body, the tower body is in a hollow cylindrical shape, the tower body is fixedly connected to the bottom of the top tank, and the liquid outlet is inserted into the top opening of the tower body; a tower kettle, the tower kettle is fixedly connected to the bottom of the tower body, a lower liquid outlet equipped with an opening and closing valve is opened at the bottom of the tower kettle, a lower reflux pipe is communicated with the side of the tower kettle, a regulating valve is installed on the lower reflux pipe and is communicated to the upper reflux pipe, a solvent is contained in the tower kettle, and the position of the solvent liquid level is lower than the position of the communication port of the upper reflux pipe; a steam generator, the steam generator is communicated to the side wall of the tower kettle, the communication port of the steam generator is opposite to the communication port of the lower reflux pipe, and a regulating valve is installed at the communication port of the steam generator. This solution forms a cryogenic rectification system suitable for laboratory research operation by setting each component, with a simple structure, reasonable process, low operation difficulty, and low energy consumption, while ensuring the purity and efficiency of separation and purification.

[0006] A laboratory biochemistry gas separation and purification device of the present invention, wherein the top tank, the tower body and the tower kettle are all hermetically connected, and a supercharger is communicated with the side wall of the tower kettle.

[0007] A laboratory biochemistry gas separation and purification device of the present invention, wherein a distributor is fixedly embedded in the tower kettle, and the position of the distributor is higher than the positions of the steam generator circulation port and the reflux downpipe connection port. By setting a distributor fixedly embedded in the tower kettle in this solution, the falling liquid phase uniformly flows into the solvent through the distributor, on the one hand, increasing the contact area between the liquid phase and the water vapor, and on the other hand, also facilitating the mixing and dissolution of the liquid phase and the solvent, effectively improving the purity and efficiency of separation and purification.

[0008] A laboratory biochemistry gas separation and purification device of the present invention, wherein a water vapor recovery tank is connected between the reflux upper pipe and the reflux downpipe. By setting a water vapor recovery tank in this solution, the water vapor can be recovered for reuse, which is beneficial to cost saving.

[0009] A laboratory biochemistry gas separation and purification device of the present invention, wherein a heating wire is wound around the outer wall of the water vapor recovery tank. By setting the heating wire on the outer wall of the water vapor recovery tank in this solution, the temperature of the reflux gas phase is maintained to prevent condensation from occurring due to the temperature drop after it flows into the reflux upper pipe, and thus it will not remain in the reflux upper pipe.

[0010] A laboratory biochemistry gas separation and purification device of the present invention, wherein a bamboo charcoal layer is filled in the water vapor recovery tank.

[0011] A laboratory biochemistry gas separation and purification device of the present invention, wherein a cooling pipe is wound around the outer wall of the water vapor recovery tank, the top end of the reflux downpipe is inserted into the water vapor recovery tank from the bottom and extends upward, a circulation pipe is communicated with the side wall of the water vapor recovery tank, the circulation pipe is communicated to the steam generator through a circulation machine, and the opening position of the top end of the reflux downpipe is higher than the position of the circulation pipe connection port.

[0012] A laboratory biochemistry gas separation and purification device of the present invention, which further includes a sealed housing, and the condenser, the top tank, the tower body and the tower kettle are all fixedly installed in the sealed housing. By setting a sealed housing in this solution, the components are effectively protected.

[0013] A laboratory biochemistry gas separation and purification device of the present invention, wherein a vacuum extraction port is opened on the side of the sealed housing, and the vacuum extraction port is communicated to an external vacuum extraction machine. By setting the sealed housing to be communicated with an external vacuum extraction device through the vacuum extraction port in this solution, a vacuum is formed in the sealed housing, and thus a heat insulation and constant temperature layer is formed, which helps to reduce the energy consumption during the operation of the device and saves the experimental cost.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. This solution forms a low-temperature rectification system suitable for laboratory research operations by setting up various components. It has a simple structure, a reasonable process, low operation difficulty, low energy consumption, and at the same time ensures the purity and efficiency of separation and purification.

[0016] 2. By setting up a steam recovery tank, this solution can recover steam for reuse, which is beneficial to cost savings.

[0017] 3. By setting up a sealed housing, this solution effectively protects various components; by connecting the sealed housing to an external vacuum pumping device through a vacuum pumping port, a vacuum is formed inside the sealed housing, and then a heat-insulating constant-temperature layer is formed, which helps to reduce the energy consumption during the operation of the device and saves experimental costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0019] Figure 1 is a front-sectional view structural schematic diagram of the separation and purification device according to the first embodiment of the present invention;

[0020] Figure 2 is a front view structural schematic diagram of the separation and purification device according to the second embodiment of the present invention.

[0021] In the figure: 1. Condenser; 11. Air inlet; 12. Upper return pipe; 2. Top tank; 21. Liquid outlet; 3. Tower body; 4. Tower kettle; 41. Lower return pipe; 42. Distributor; 43. Lower liquid outlet; 5. Steam recovery tank; 51. Bamboo charcoal layer; 52. Circulation pipe; 6. Steam generator; 7. Supercharger; 8. Sealed housing; 81. Vacuum pumping port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will disclose multiple embodiments of the present invention in the form of diagrams. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some well-known and commonly used structures and components will be shown in a simple schematic manner in the diagrams.

[0023] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not specifically refer to the order or sequence. Nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] Please refer to Figure 1 and 2 , a laboratory biochemistry gas separation and purification device of the present invention includes a condenser 1. An air inlet 11 is provided at the top of the condenser 1, and a reflux upper pipe 12 is connected to the side of the condenser 1; a top tank 2, the condenser 1 is fixedly installed on the top of the top tank 2, the bottom surface of the top tank 2 is funnel-shaped and a liquid outlet 21 is provided at the bottom end; a tower body 3, the tower body 3 is in a hollow cylindrical shape, the tower body 3 is fixedly connected to the bottom of the top tank 2, and the liquid outlet 21 is inserted into the top opening of the tower body 3; a tower kettle 4, the tower kettle 4 is fixedly connected to the bottom of the tower body 3, a lower liquid outlet 43 equipped with an opening and closing valve is provided at the bottom of the tower kettle 4, a reflux lower pipe 41 is connected to the side of the tower kettle 4, a regulating valve is installed on the reflux lower pipe 41 and is connected to the reflux upper pipe 12, and a solvent is contained in the tower kettle 4, and the position of the solvent liquid level is lower than the position of the connection port of the reflux upper pipe 12; a steam generator 6, the steam generator 6 is connected to the side wall of the tower kettle 4, the connection port of the steam generator 6 is opposite to the connection port of the reflux lower pipe 41, and a regulating valve is installed at the connection port of the steam generator 6. This solution forms a low-temperature rectification system suitable for laboratory research operations by setting each component, with a simple structure, reasonable process, low operation difficulty, low energy consumption, and at the same time ensuring the purity and efficiency of separation and purification.

[0025] Furthermore, the top tank 2, the tower body 3, and the tower kettle 4 are all hermetically connected, and a booster 7 is connected to the side wall of the tower kettle 4.

[0026] Furthermore, a distributor 42 is fixedly embedded in the tower kettle 4, and the position of the distributor 42 is higher than the positions of the circulation port of the steam generator 6 and the connection port of the reflux lower pipe 41. By setting the fixedly embedded distributor 42 in the tower kettle 4 in this solution, the falling liquid phase uniformly flows into the solvent through the distributor 42, increasing the contact area between the liquid phase and water vapor on the one hand, and facilitating the mixing and dissolution of the liquid phase and the solvent on the other hand, effectively improving the purity and efficiency of separation and purification.

[0027] Furthermore, a water vapor recovery tank 5 is connected between the upper return pipe 12 and the lower return pipe 41. By setting up the water vapor recovery tank 5 in this solution, water vapor can be recovered for reuse, which is beneficial to cost savings.

[0028] Furthermore, a heating wire is wound around the outer wall of the water vapor recovery tank 5. By setting the heating wire on the outer wall of the water vapor recovery tank 5 in this solution, the temperature of the return gas phase is maintained to prevent condensation from occurring due to temperature drop after it flows into the upper return pipe 12, and thus it will not remain in the upper return pipe 12.

[0029] Furthermore, a bamboo charcoal layer 51 is filled in the water vapor recovery tank 5.

[0030] Furthermore, a cooling pipe is wound around the outer wall of the water vapor recovery tank 5. The top end of the lower return pipe 41 is inserted into the water vapor recovery tank 5 from the bottom and extends upward. A circulation pipe 52 is connected to the side wall of the water vapor recovery tank 5. The circulation pipe 52 is connected to the steam generator 6 through a circulation machine. The opening position of the top end of the lower return pipe 41 is higher than the connection port position of the circulation pipe 52.

[0031] Furthermore, a sealed housing 8 is also included. The condenser 1, the top column tank 2, the column body 3, and the column still 4 are all fixedly installed inside the sealed housing 8. By setting up the sealed housing 8 in this solution, effective protection is provided for each component.

[0032] Furthermore, a vacuum extraction port 81 is opened on the side of the sealed housing 8, and the vacuum extraction port 81 is connected to an external vacuum pump. By setting the sealed housing 8 to be connected to an external vacuum device through the vacuum extraction port 81 in this solution, a vacuum is formed inside the sealed housing 8, and thus a heat-insulating constant-temperature layer is formed, which helps to reduce the energy consumption during the operation of the device and saves the experimental cost.

[0033] When using the present invention:

[0034] Refer to Figure 1 , when the mixed gas in the experiment enters the device from the air inlet 11, it is first cooled by the low temperature of the condenser 1, and then changes from the gas phase to the liquid phase and enters the top column tank 2; the liquid phase flows out from the liquid outlet 21 of the bottom funnel narrow opening of the top column tank 2 and enters the column still 4 through the column body 3; the liquid phase comes into contact with the hot water vapor transported by the steam generator 6 during the falling process and then changes back to the gas phase again. Since the column still 4 is filled with a solvent that is insoluble in water and soluble in the target gas, the target gas in the mixed gas phase dissolves in the solvent, that is, it is absorbed by the solvent, while the gas phase of the remaining components flows back into the condenser 1 together with the steam through the lower return pipe 41 and the upper return pipe 12, and the above process is repeated to achieve the purpose of completely dissolving the residual target gas in the return gas phase in the solvent.

[0035] In order to improve the efficiency of completely dissolving the target gas in the solvent, a stirring device can also be installed in the column still 4, which will not be elaborated here.

[0036] After collecting the solvent containing the target gas in the reboiler 4 through the lower liquid outlet 43, the pure target gas can be obtained through secondary purification.

[0037] However, for cryogenic rectification, the reboiler 4 also needs to be connected to a booster 7, and the top tank 2, the tower body 3, and the reboiler 4 are all hermetically connected. The booster 7 is used to pressurize the tower body 3 and the reboiler 4, so that the boiling point temperatures of the components of the mixed gas entering the tower body 3 and the reboiler 4 and turning into the gas phase are significantly reduced and differentiated:

[0038] (1) If the boiling point temperature of the target gas after pressurization is higher than that of the impurity components after pressurization, then at this time the target gas turns into a liquid phase, while the impurity components remain in the gas phase, which helps the target gas dissolve in the solvent and separate from the impurity components, thereby improving the purification purity and efficiency.

[0039] (2) If the boiling point temperature of the target gas after pressurization is lower than that of the impurity components after pressurization, then at this time the target gas remains in the gas phase, while the impurity components turn into a liquid phase. At this time, the reboiler 4 is changed to contain a solvent that helps the impurity components dissolve, and the gaseous target gas returns to the condenser 1 with the water vapor, and effective separation and purification can also be achieved.

[0040] Compared with the common distillation separation and purification methods, the purification design of the present invention has higher purity, higher efficiency, and lower operation difficulty, and is suitable for separation and purification operations during laboratory research.

[0041] It should be noted that a water vapor recovery tank 5 can be connected between the return down pipe 41 and the return up pipe 12. On the one hand, the water vapor can be recovered and reused, and on the other hand, the water vapor components in the return gas phase can be effectively removed to prevent them from entering the condenser tube and becoming impurity components, which helps to improve the purification purity and efficiency.

[0042] Among them, there are two embodiments of the water vapor recovery tank 5. One is to fill a bamboo charcoal layer 51 in the water vapor recovery tank 5. The bamboo charcoal layer 51 can effectively absorb the water vapor in the return gas phase, keeping the return gas phase dry. The bamboo charcoal layer 51 after absorbing water can be reused after subsequent treatment, which is beneficial to cost savings; the other is to set a cooling tube around the outer wall of the water vapor recovery tank 5. The return down pipe 41 is inserted into the bottom of the water vapor recovery tank 5 and extends upward. When the return gas phase enters the water vapor recovery tank 5, it is cooled. Since the boiling point temperature of water vapor is relatively high, it will turn into liquid water, which will then remain in the water vapor recovery tank 5 and be recycled back to the steam generator 6 through the circulation pipe 52 for reuse, which is beneficial to cost savings.

[0043] Heating wires can also be wound around the steam recovery tank 5 to maintain the temperature of the reflux gas phase, prevent it from condensing due to temperature drop after flowing into the upper reflux pipe 12, and thus avoid residue in the upper reflux pipe 12.

[0044] In addition, the above-mentioned components can be installed in the sealed housing 8 to protect the components. At the same time, the sealed housing 8 is connected to an external vacuum pumping device through the vacuum pumping port 81 to create a vacuum inside the sealed housing 8, thereby forming a heat-insulating constant-temperature layer, which helps to reduce the energy consumption during the operation of the device and saves the experimental cost.

[0045] The present invention has the advantages of high purification purity and efficiency, low operation difficulty, suitability for laboratory operation, and low energy consumption, and solves the problems of low purification purity and efficiency of common distillation separation and purification devices, as well as high energy consumption and large operation difficulty of industrial low-temperature rectification systems.

[0046] The above description is only for the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A laboratory biochemistry and chemical engineering gas separation and purification device, characterized in that: It includes a condenser (1), an air inlet (11) is opened at the top of the condenser (1), and a reflux upper pipe (12) is connected to the side of the condenser (1); a top tower tank (2), the condenser (1) is fixedly installed on the top of the top tower tank (2), the bottom surface of the top tower tank (2) is funnel-shaped and a liquid outlet (21) is opened at the bottom end; a tower body (3), the tower body (3) is in a hollow cylindrical shape, the tower body (3) is fixedly connected to the bottom of the top tower tank (2), and the liquid outlet (21) is inserted into the top opening of the tower body (3); a tower kettle (4), the tower kettle (4) is fixedly connected to the bottom of the tower body (3), a lower liquid outlet (43) equipped with an opening and closing valve is opened at the bottom of the tower kettle (4), a reflux lower pipe (41) is connected to the side of the tower kettle (4), a regulating valve is installed on the reflux lower pipe (41) and is connected to the reflux upper pipe (12), a solvent is contained in the tower kettle (4), and the position of the solvent liquid level is lower than the position of the connection port of the reflux upper pipe (12); a steam generator (6), the steam generator (6) is connected to the side wall of the tower kettle (4), the connection port of the steam generator (6) is facing the connection port of the reflux lower pipe (41), and a regulating valve is installed at the connection port of the steam generator (6); The top tower tank (2), the tower body (3) and the tower kettle (4) are all hermetically connected, and a supercharger (7) is connected to the side wall of the tower kettle (4); A water vapor recovery tank (5) is connected between the reflux upper pipe (12) and the reflux lower pipe (41).

2. The laboratory biochemistry and chemical engineering gas separation and purification device according to claim 1, characterized in that: A distributor (42) is fixedly embedded in the tower kettle (4), and the position of the distributor (42) is higher than the positions of the circulation port of the steam generator (6) and the connection port of the reflux lower pipe (41).

3. The laboratory biochemistry and chemical engineering gas separation and purification device according to claim 1, characterized in that: A heating wire is wound around the outer wall of the water vapor recovery tank (5).

4. The laboratory biochemistry and chemical engineering gas separation and purification device according to claim 1, characterized in that: A bamboo charcoal layer (51) is filled in the water vapor recovery tank (5).

5. The laboratory biochemistry and chemical engineering gas separation and purification device according to claim 1, characterized in that: A cooling pipe is wound around the outer wall of the water vapor recovery tank (5), the top end of the reflux lower pipe (41) is inserted into the water vapor recovery tank (5) from the bottom and extends upward, a circulation pipe (52) is connected to the side wall of the water vapor recovery tank (5), the circulation pipe (52) is connected to the steam generator (6) through a circulation machine, and the position of the top end opening of the reflux lower pipe (41) is higher than the position of the connection port of the circulation pipe (52).

6. The laboratory biochemistry and chemical engineering gas separation and purification device according to claim 1, characterized in that: It further includes a sealed housing (8), and the condenser (1), the top tower tank (2), the tower body (3) and the tower kettle (4) are all fixedly installed in the sealed housing (8).

7. A laboratory biochemistry gas separation and purification device according to claim 6, characterized in that: a vacuum pumping port (81) is provided on the side of the sealed housing (8), and the vacuum pumping port (81) is communicated with an external vacuum pump.

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