Gas-liquid phase equilibrium analysis device

Abstract

The utility model discloses a gas-liquid phase equilibrium analysis device, which belongs to the technical field of experimental equipment and comprises a gas-liquid phase equilibrium component, a gas-liquid phase analysis component, a gas-liquid phase analysis component and a gas-liquid phase analysis component, the gas-liquid phase balance assembly comprises a gas-liquid conversion pipe arranged in the first heat preservation pipe, the upper portion of the gas-liquid conversion pipe is connected with an exhaust pipe, the exhaust pipe penetrates through the first heat preservation pipe, the lower portion of the gas-liquid conversion pipe is connected with a backflow pipe, the exhaust pipe is connected with the backflow pipe and then connected with the condensation assembly through a connecting pipe, and the interior of the gas-liquid conversion pipe is divided into a temperature measuring area and a heating area. A temperature measuring tube is arranged in the temperature measuring area, the top of the temperature measuring tube is open, the bottom of the temperature measuring tube is closed, and the temperature measuring assembly extends into the temperature measuring tube; a heating pipe is arranged in the heating area, the top of the heating pipe is closed, the bottom of the heating pipe is open, and the heating assembly extends into the heating pipe; according to the gas phase balancing device, the problems that the phase balancing speed is low in the data measuring process, and small liquid drops are possibly mixed into a gas phase are solved.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and in particular to a gas-liquid phase equilibrium analysis device. Background Technology

[0002] In recent years, gas-liquid phase equilibrium data has become a core fundamental parameter for the design and optimization of chemical separation processes. The accuracy of its measurement directly affects the reliability of distillation column design, solvent selection, and thermodynamic model construction. Traditional gas-liquid phase equilibrium measurement devices mainly include: a gas-liquid phase equilibrium component; a heating component; a temperature measuring component; a condensation component; and a vacuum component. The heating port of the gas-liquid phase equilibrium component is connected to the heating component, the gas outlet of the gas-liquid phase equilibrium component is connected to one end of the condensation component, and the other end of the condensation component is connected to the vacuum component.

[0003] Its shortcomings include: slow phase equilibrium during data measurement, the possibility of small droplets being mixed into the gas phase, discontinuous reflux of condensate, and difficulty in accurate sampling. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a gas-liquid phase equilibrium analysis device, solving the problems in the background technology.

[0005] The purpose of this invention is achieved as follows: A gas-liquid phase equilibrium analysis device, comprising:

[0006] A gas-liquid phase equilibrium component is used to achieve gas-liquid phase conversion;

[0007] Heating components are used to provide a heating source for the gas-liquid phase equilibrium components;

[0008] Temperature measuring component, used to measure the temperature inside the gas-liquid phase equilibrium component;

[0009] The condensation component is used to condense the gas generated by the gas-liquid phase balance component and return it to the gas-liquid phase balance component.

[0010] Vacuum pumping components are used to maintain the vacuum level during the gas-liquid phase equilibrium reaction process.

[0011] The heating port of the gas-liquid phase balance component is connected to the heating component, the gas outlet of the gas-liquid phase balance component is connected to one end of the condensation component, and the other end of the condensation component is connected to the vacuum component.

[0012] The gas-liquid phase equilibrium component includes:

[0013] A gas-liquid conversion pipe is installed inside the first insulation pipe. A liquid inlet pipe is connected to one side of the gas-liquid conversion pipe, which passes through the first insulation pipe. An exhaust pipe is connected to the upper part of the gas-liquid conversion pipe, which also passes through the first insulation pipe. A return pipe is connected to the lower part of the gas-liquid conversion pipe. The exhaust pipe and the return pipe are connected to a condenser assembly via a connecting pipe. The gas-liquid conversion pipe is divided into an upper temperature measuring zone and a lower heating zone by a middle partition. A through hole is provided on the middle partition. A temperature measuring tube is installed in the temperature measuring zone. The top of the temperature measuring tube is open and extends through the first insulation pipe and the gas-liquid conversion pipe. The bottom of the temperature measuring tube is closed. The temperature measuring assembly extends into the temperature measuring tube. A heating tube is installed in the heating zone. The top of the heating tube is closed. The bottom of the heating tube is open and passes through the gas-liquid conversion pipe. The heating assembly extends into the heating tube.

[0014] The central partition is equipped with multiple gas guide pipes, and the bottom of the gas guide pipes is connected to the heating zone.

[0015] Furthermore, the upper end of the gas guide tube is processed into an arc-shaped curved structure, so that the outlet is set towards the temperature measuring tube.

[0016] Furthermore, the outer periphery of the temperature measuring tube is machined with a threaded structure.

[0017] Furthermore, the gas-liquid phase balance component also includes a second heat-insulating pipe, which is enclosed and sleeved on the upper part of the gas-liquid conversion pipe.

[0018] Furthermore, the bottom of the gas-liquid conversion tube is provided with a first insulation tube, and the bottom of the gas-liquid conversion tube is machined into a spherical shape.

[0019] Furthermore, the exhaust pipe, return pipe, and connecting pipe are connected to form a three-way structure, with the exhaust pipe serving as a bypass passage.

[0020] Furthermore, a sampling platform is provided at the top of the reflux pipe, a sampling weir is provided in the middle of the sampling platform, and a sampling pipe is connected to one side of the connecting pipe.

[0021] Furthermore, a pressure balancing pipe is provided on the side of the connecting pipe and the return pipe, connecting both of them.

[0022] Compared with existing technologies, the advantages of this invention are as follows: This invention introduces a gas guide column structure, which effectively suppresses droplet entrainment by optimizing the airflow field distribution. Simultaneously, the rectifying effect of the guide column makes the gas-liquid interface more stable. The design of an interconnected pressure balance tube, through dynamic balancing of the internal and external pressure difference of the device, completely solves the problem of poor condensate return caused by negative pressure in traditional devices. Its unique siphon-assisted structure enables a liquid recovery rate of over 99%. These improvements achieve synergistic optimization in energy saving, data accuracy, and system stability, providing a more efficient experimental platform for phase equilibrium research in fields such as chemical separation and environmental monitoring. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the gas-liquid phase balance component in this utility model.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0027] Among them, 100 is a gas-liquid phase balance component, 101 is a first insulation pipe, 102 is a gas-liquid conversion pipe, 103 is a liquid addition pipe, 104 is an exhaust pipe, 105 is a return pipe, 106 is a central partition, 107 is a temperature measuring pipe, 107a is a threaded structure, 108 is a heating pipe, 109 is a second insulation pipe, 110 is a connecting pipe, 111 is a gas guide pipe, 112 is a sampling pipe, 113 is a gas pressure balance pipe, 114 is a sampling platform, 115 is a sampling weir, 200 is a heating component, 300 is a temperature measuring component, 400 is a condensation component, and 500 is a vacuuming component. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1-3The gas-liquid phase equilibrium analysis device shown includes:

[0030] The gas-liquid phase balance component 100 is used to realize the conversion between gas and liquid phases;

[0031] Heating component 200 is used to provide a heating source for gas-liquid phase equilibrium component 100;

[0032] Temperature measuring component 300 is used to measure the temperature inside the gas-liquid phase equilibrium component 100;

[0033] The condenser assembly 400 is used to condense the gas generated by the gas-liquid phase balance assembly 100 and return it to the gas-liquid phase balance assembly 100.

[0034] Vacuum assembly 500 is used to maintain the vacuum level during the reaction process of gas-liquid phase equilibrium assembly 100;

[0035] The heating port of the gas-liquid phase balance component 100 is connected to the heating component 200, the gas outlet of the gas-liquid phase balance component 100 is connected to one end of the condensing component 400, and the other end of the condensing component 400 is connected to the vacuum component 500.

[0036] The gas-liquid phase equilibrium assembly 100 includes:

[0037] A gas-liquid conversion pipe 102 is installed inside the first insulation pipe 101. A liquid inlet pipe 103 is connected to one side of the gas-liquid conversion pipe 102 and passes through the first insulation pipe 101. An exhaust pipe 104 is connected to the upper part of the gas-liquid conversion pipe 102 and passes through the first insulation pipe 101. A return pipe 105 is connected to the lower part of the gas-liquid conversion pipe 102. After the exhaust pipe 104 is connected to the return pipe 105, it is connected to the condenser assembly 400 via a connecting pipe 110. The gas-liquid conversion pipe 102 is divided into upper and lower sections by a middle partition 106. The room has a temperature measuring zone in the middle and a heating zone in the lower part. A through hole is provided on the middle partition 106. A temperature measuring tube 107 is provided in the temperature measuring zone. The top of the temperature measuring tube 107 is open and extends through the first insulation tube 101 and the gas-liquid conversion tube 102. The bottom of the temperature measuring tube 107 is closed. The temperature measuring component 300 extends into the temperature measuring tube 107. A heating tube 108 is provided in the heating zone. The top of the heating tube 108 is closed. The bottom of the heating tube 108 is open and extends through the gas-liquid conversion tube 102. The heating component 200 extends into the heating tube 108.

[0038] The middle partition 106 is provided with multiple gas guide pipes 111, and the bottom of the gas guide pipes 111 is connected to the heating zone.

[0039] Specifically, the heating component 200 is an electric heating component 200, which includes a DC power supply and an electric heating tube 108, with the electric heating tube 108 extending into the heating tube 108; the temperature measuring component 300 can be a conventional thermometer; the condensing component 400 can be a conventional condensing tube; and the vacuuming component 500 can also be a conventional vacuuming component 500 (vacuum pump + pipeline).

[0040] More specifically, the gas-liquid phase balance component 100 is made entirely of glass, and the inlet of the liquid inlet pipe is sealed with a cap, requiring that the seal be airtight and leak-proof; the exhaust pipe 104 is set in a slightly inclined state, with one end connected to the gas-liquid conversion pipe 102 at a higher angle than the other end; the return pipe 105 is L-shaped in general, and the end of the return pipe 105 near the exhaust pipe 104 is machined with a spherical structure; the central partition 106 is generally annular in shape, and three gas guide pipes 111 are provided, evenly arranged on the central partition 106.

[0041] The working principle of this utility model is as follows:

[0042] After the device is assembled, open the cap of the inlet pipe and add the liquid to be treated. The liquid also enters the gas-liquid conversion pipe 102 through the inlet pipe. Stop adding liquid when the liquid level is close to the middle partition 106, close the cap, and start evacuating. After the required vacuum level is reached, turn on the heating device to heat the liquid. After heating, the steam enters the condenser from the exhaust pipe 104, condenses, and falls back to the return pipe 105, thus returning to the gas-liquid conversion pipe 102. This cycle continues.

[0043] It should be noted that by setting up a gas guide tube 111, the gas generated during heating is ejected from the gas guide tube 111. Compared with the traditional direct heating method, the steam generated by the gas guide tube 111 can reduce the mixing of liquid droplets into the gas phase, thereby improving the sampling accuracy.

[0044] Furthermore, the upper end of the gas guide tube 111 is processed into an arc-shaped curved structure, so that the outlet is set towards the temperature measuring tube 107.

[0045] It should be noted that the arc-shaped structure at the upper end of the gas guide tube 111 allows the steam to directly contact the outer surface of the temperature measuring tube 107 when it is ejected, so that the liquid water droplets mixed in the steam can adhere to the surface of the temperature measuring tube 107, further reducing the mixing of droplets into the gas phase.

[0046] Furthermore, the outer periphery of the temperature measuring tube 107 is machined with a threaded structure 107a.

[0047] It should be noted that the threaded design on the outer periphery of the temperature sensing tube 107 can further help to block liquid droplets.

[0048] Furthermore, the gas-liquid phase balance component 100 also includes a second heat insulation pipe 109, which is enclosed and sleeved on the upper part of the gas-liquid conversion pipe 102.

[0049] Specifically, the liquid level-sealed space inside the second insulation pipe 109 wraps around the outer periphery of the upper part of the gas-liquid conversion pipe 102, further improving the insulation performance of this utility model.

[0050] Furthermore, the bottom of the gas-liquid conversion tube 102 is provided through the first insulation tube 101, and the bottom of the gas-liquid conversion tube 102 is machined into a spherical shape.

[0051] It should be noted that the spherical bottom structure is advantageous for storing more liquid, which can ensure that the distance between the heating tube 108 and the gas-liquid conversion tube 102 can be reduced while maintaining the same reaction volume, thus enhancing the heating effect.

[0052] Furthermore, the exhaust pipe 104, return pipe 105, and connecting pipe 110 are connected to form a three-way structure, with the exhaust pipe 104 serving as a bypass passage.

[0053] It should be noted that the three-way design ensures smoother flow of gas and liquid.

[0054] Furthermore, a sampling platform 114 is provided at the top of the reflux pipe 105, and a sampling weir 115 is provided in the middle of the sampling platform 114. A sampling pipe 112 is connected to one side of the connecting pipe 110.

[0055] Specifically, a sampling tube 112 is also provided on one side of the bottom of the connecting tube 110, and a sampling port cap is also provided at the end of the sampling tube 112.

[0056] It should be noted that the design of the sampling platform 114 forms a temporary storage area for condensed liquid, which facilitates sampling from the sampling tube 112; at the same time, the design of the sampling weir 115 allows for the accumulation of more condensate, making sampling even more convenient.

[0057] Furthermore, a pressure balancing pipe 113 is provided on the side of the connecting pipe 110 and the return pipe 105, connecting the two together.

[0058] Specifically, the connection between the pressure balance pipe 113 and the return pipe 105 is located below the sampling stage 114 and above the spherical structure; this design connects the upper and lower sampling areas to balance the pressure and ensure smooth return of the condensate.

[0059] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A gas-liquid phase equilibrium analysis device, comprising: A gas-liquid phase balance assembly (100) is used to achieve gas-liquid phase conversion; Heating component (200) is used to provide a heating source for gas-liquid phase equilibrium component (100); Temperature measuring component (300) is used to measure the temperature inside the gas-liquid phase equilibrium component (100); A condenser assembly (400) is used to condense the gas generated by the gas-liquid phase balance assembly (100) and return it to the gas-liquid phase balance assembly (100). Vacuum assembly (500) is used to maintain the vacuum level of the gas-liquid phase equilibrium assembly (100) during the reaction process; The heating port of the gas-liquid phase balance component (100) is connected to the heating component (200), the gas outlet of the gas-liquid phase balance component (100) is connected to one end of the condensing component (400), and the other end of the condensing component (400) is connected to the vacuum component (500). The gas-liquid phase equilibrium component (100) is characterized in that it comprises: A gas-liquid conversion pipe (102) is installed inside the first insulation pipe (101). A liquid inlet pipe (103) is connected to one side of the gas-liquid conversion pipe (102), and the liquid inlet pipe (103) passes through the first insulation pipe (101). An exhaust pipe (104) is connected to the upper part of the gas-liquid conversion pipe (102), and the exhaust pipe (104) passes through the first insulation pipe (101). A return pipe (105) is connected to the lower part of the gas-liquid conversion pipe (102). After the exhaust pipe (104) and the return pipe (105) are connected, they are connected to the condenser assembly (400) via a connecting pipe (110). The gas-liquid conversion pipe (102) is divided into an upper temperature measuring zone and a lower heating zone by a middle partition (106). The middle partition (106) is located on the upper part of the gas-liquid conversion pipe (102). A through hole is provided. A temperature measuring tube (107) is provided in the temperature measuring zone. The top of the temperature measuring tube (107) is open and extends through the first heat-insulating tube (101) and the gas-liquid conversion tube (102). The bottom of the temperature measuring tube (107) is closed. The temperature measuring component (300) extends into the temperature measuring tube (107). A heating tube (108) is provided in the heating zone. The top of the heating tube (108) is closed. The bottom of the heating tube (108) is open and extends through the gas-liquid conversion tube (102). The heating component (200) extends into the heating tube (108). A plurality of gas guide tubes (111) are provided on the middle partition (106). The bottom of the gas guide tubes (111) is connected to the heating zone.

2. The gas-liquid equilibrium analysis apparatus according to claim 1, wherein The upper end of the gas guide tube (111) is processed into an arc-shaped curved structure so that the outlet is set towards the temperature measuring tube (107).

3. The gas-liquid equilibrium analysis apparatus according to claim 1 or 2, characterized by The outer periphery of the temperature measuring tube (107) is machined with a threaded structure (107a).

4. The apparatus according to claim 1 or 2, wherein The gas-liquid phase balance component (100) also includes a second heat insulation pipe (109), which is enclosed and sleeved on the upper part of the gas-liquid conversion pipe (102).

5. The apparatus according to claim 1 or 2, wherein The bottom of the gas-liquid conversion tube (102) is provided through the first insulation tube (101), and the bottom of the gas-liquid conversion tube (102) is processed into a spherical shape.

6. The gas-liquid equilibrium analysis apparatus according to claim 1 or 2, wherein The exhaust pipe (104), return pipe (105), and connecting pipe (110) are connected to form a three-way structure, wherein the exhaust pipe (104) serves as a bypass passage.

7. A gas-liquid equilibrium analysis device according to claim 6, wherein The top of the reflux pipe (105) is provided with a sampling platform (114), and a sampling weir (115) is provided in the middle of the sampling platform (114). A sampling pipe (112) is connected to one side of the connecting pipe (110).

8. The gas-liquid equilibrium analysis apparatus according to claim 7, wherein The side of the connecting pipe (110) and the return pipe (105) is provided with a pressure balancing pipe (113) connecting the two.

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