Device capable of effectively improving gas-liquid separation effect

Abstract

The invention belongs to the field of radioactive fluid conveying, and relates to a device capable of effectively improving the gas-liquid separation effect. The device body is a container, and a conical bottom section is arranged at the bottom of the container. The container is connected with three pipelines, namely a gas-liquid mixture inlet pipeline which is tangentially welded in the middle of the container along the wall of the container; the gas outlet pipeline is welded at the upper end of the container along the axis of the container; the liquid outlet pipeline is welded at the bottom end of the container along the axis of the container; the three pipelines are communicated with the interior of the container; the liquid blocking plate is located in the middle of the container and used for preventing liquid from flowing upwards; and the baffle plate is positioned at the upper end of the container and is used for strengthening the gas-liquid separation effect. According to the device, the gas-liquid separation effect can be effectively improved under the condition of the same volume, the problem that the gas-liquid separation effect is reduced when the conveying flow of existing gas-liquid separation equipment is too large is effectively solved, and the problem that nuclide moves backwards due to the fact that the separation effect is reduced is solved.

Description

Technical Field

[0001] This application belongs to the field of radioactive fluid transportation and relates to a device that can effectively improve gas-liquid separation. Background Technology

[0002] Currently, most spent fuel reprocessing plants, both domestically and internationally, use compressed air feeding to transport radioactive liquids. In this process, gas-liquid separators, as the final stage of fluid transport, remove the gas carried by the compressed air. Gas-liquid separation is a crucial step, separating the transported fluid into gas and liquid components to prevent liquid from entering the exhaust gas treatment system. After wet chemical separation, some radioactive liquids are transported using a constant-level pre-tank, a gas-liquid separator, and pipelines as secondary transport equipment. The constant-level pre-tank can also be used independently as an intermediate sampling storage tank. Due to the high radioactivity concentration of the transported liquid, to avoid direct contact with humans and the environment and potential radioactive contamination, the constant-level pre-tank, gas-liquid separator, and pipelines are all installed in shielded equipment rooms. Under current technology, using gas-liquid separators can lead to some radioactive liquid entering the exhaust gas treatment system, significantly increasing the radioactivity of materials such as washing acids in the system, increasing filter replacement frequency, increasing waste liquid volume, and affecting system stability. Summary of the Invention

[0003] The purpose of this application is to provide a device that can effectively improve the gas-liquid separation effect, and effectively solve the problem that the gas-liquid separation effect is reduced due to the large flow rate of fluid in the gas-liquid separator.

[0004] The technical solution to achieve the purpose of this application is as follows:

[0005] A device that can effectively improve gas-liquid separation effect, the main body of the device is a container, the bottom of the container is provided with a conical bottom section, and the container is connected to the conical bottom section;

[0006] The container is connected to three pipes: a gas-liquid mixture inlet pipe, which is tangentially connected to the middle of the container along the container wall; a gas outlet pipe, which is connected to the upper end of the container along the container axis; and a liquid outlet pipe, which is connected to the bottom end of the container along the container axis. All three pipes are connected to the interior of the container.

[0007] The container is equipped with: a liquid baffle located in the middle of the container to prevent liquid from rising; and a baffle located at the top of the container to enhance the gas-liquid separation effect.

[0008] The baffle plate is composed of alternating inner and outer ring plates. The outer ring plate is connected to the inner wall of the container, and the inner ring plate is connected to the fixed plate through a support column. The fixed plate is set in the gas outlet pipe and is connected and fixed to the upper end of the gas outlet pipe. The upper end of the support column is connected to the fixed plate, and the lower end is connected to the inner ring plate of the baffle plate, so that the baffle plate is fixed to the upper region of the container.

[0009] The gas outlet pipe has an enlarged section at the fixed plate to increase the opening area required for the support installation, so that the opening area at the upper end of the gas outlet pipe is comparable to the pipe diameter, thereby reducing the impact of the fixed plate on the gas flow rate.

[0010] A conical tailstock is provided above the fixed plate to integrate and stabilize the airflow passing through the opening of the fixed plate.

[0011] Optionally, the container is cylindrical.

[0012] Optionally, the gas-liquid mixture inlet pipe is oriented tangentially to the container wall, so that the gas-liquid mixture forms a swirling flow on the inner wall of the container after entering the container, which increases the path of the gas-liquid mixture to the liquid surface and also increases the fluid velocity.

[0013] Optionally, the liquid barrier is a ring-shaped structure fixed to the inner wall of the container to prevent liquid from rising with the gas.

[0014] Optionally, the inner and outer ring plates of the baffle are arranged alternately to form a multi-layer structure, and the gap between the inner and outer plates increases the fluid movement distance for droplet condensation and reflux.

[0015] Optionally, by adding a liquid outlet pipe in the middle of the container, below the position of the gas-liquid mixture inlet pipe, and adjusting the pipe diameter, the device can function as a constant liquid pre-tank, achieving the effect of a constant outflow liquid level.

[0016] Optionally, the gas-liquid mixture inlet pipe and the container are manufactured by integral casting, and a coating is added to the surface to reduce the corrosion of the container by the fluid.

[0017] The beneficial technical effects of this application are as follows:

[0018] The gas-liquid separation device of the present invention can effectively improve the gas-liquid separation effect under the same volume, and the material liquid is stirred to a certain extent in the tank, reducing the possibility of pipeline blockage. It effectively solves the problem that the gas-liquid separation effect of the existing gas-liquid separation equipment decreases when the conveying flow rate is too large, and alleviates the problem of nuclide migration caused by the decrease in separation effect. Attached Figure Description

[0019] Figure 1 A front view of a device that can effectively improve gas-liquid separation performance;

[0020] Figure 2 This is a top view of a device that can effectively improve gas-liquid separation.

[0021] Figure 3 A front view of a device with a constant liquid pre-tank function that can effectively improve gas-liquid separation;

[0022] In the picture:

[0023] 1-Inner ring plate, 2-Outer ring plate, 3-Fixing plate, 4-Exhaust pipe enlargement position, 5-Discharge pipe enlargement section, 6-Liquid barrier plate;

[0024] a-Gas-liquid mixture inlet, b-Liquid outlet, c-Gas outlet, d-Overflow outlet. Detailed Implementation

[0025] This invention provides a device that can effectively improve gas-liquid separation. The invention is further described in detail below with reference to specific embodiments, but it should not be construed as limiting the scope of the invention to the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without inventive effort are within the scope of protection of this application.

[0026] See Figure 1-2 The figure shows a front view and a top view of a device that can effectively improve gas-liquid separation according to an embodiment of this application. The main body of the device is a container, and the bottom of the container is provided with a conical bottom section, the container being connected to the conical bottom section;

[0027] The container is connected to three pipes: a gas-liquid mixture inlet pipe, which is tangentially connected to the middle of the container along the container wall; c gas outlet pipe, which is connected to the upper end of the container along the container axis; and b liquid outlet pipe, which is connected to the bottom end of the container along the container axis. All three pipes are connected to the interior of the container.

[0028] The container is equipped with: a liquid baffle 6 located in the middle of the container to prevent liquid from rising; and a baffle plate located at the top of the container to enhance the gas-liquid separation effect.

[0029] The baffle plate is composed of an inner ring plate 1 and an outer ring plate 2 alternately. The outer ring plate 2 is connected to the inner wall of the container. The inner ring plate 1 is connected to the fixed plate 3 through a support column. The fixed plate 3 is set in the gas outlet c pipe and is connected and fixed to the upper end of the gas outlet c pipe. The upper end of the support column is connected to the fixed plate 3 and the lower end is connected to the inner ring plate 1 of the baffle plate, so that the baffle plate is fixed to the upper area of ​​the container.

[0030] The gas outlet c pipe has an enlarged section at the fixed plate 3 to increase the opening area required for the support installation, so that the opening area at the upper end of the gas outlet c pipe is comparable to the pipe diameter, thereby reducing the impact of the fixed plate 3 on the gas flow rate.

[0031] A conical tailstock is provided above the fixed plate 3 to integrate and stabilize the airflow flowing through the opening of the fixed plate 3.

[0032] The container is cylindrical.

[0033] When using the gas-liquid separation function of the device, the feed liquid is fed into the gas-liquid mixture inlet a by air lifting. The feed liquid is injected at a certain angle at the gas-liquid mixture inlet a, causing it to flow tangentially along the tank wall. The feed liquid swirls on the tank wall, stirring the original feed liquid inside the tank and achieving the gas-liquid separation effect. As the feed liquid swirls on the tank wall, the baffle plate 6 prevents the tangentially entering feed liquid from climbing upwards along the tank wall. The fluid will continuously swirl along the tank wall before reaching the resident liquid inside the tank. When the overflow flow rate is stable, the feed air pressure is adjusted to control the feed flow rate. After the feed liquid is stirred, the gas in it separates from the liquid and flows upwards spontaneously, achieving the gas-liquid separation effect. The gas contains tiny liquid droplets. Before entering the gas outlet c, this fluid bypasses the baffle corridor formed by the inner ring plate 1 and the outer ring plate 2. The gas carrying droplets increases the path of the gas-liquid mixture, thus increasing the settling time of the liquid phase. This allows the liquid phase to settle sufficiently, further reducing the liquid content in the exhaust gas. Since the exhaust gas contains only a very small amount of liquid phase, and the ring plates have a certain inclination angle, the condensed droplets fall layer by layer with the ring plates as the fluid flows between them, making it difficult for the baffle corridor to be blocked. The liquid after gas-liquid separation is then sent to the corresponding container through the liquid outlet b.

[0034] See Figure 3 The figure shows a front view of a device with a constant liquid pre-tank function that can effectively improve gas-liquid separation, according to an embodiment of this application. The main body of the device is a container with a conical bottom section at the bottom, and the container is connected to the conical bottom section.

[0035] The container is connected to three pipes: a gas-liquid mixture inlet pipe, which is tangentially connected to the middle of the container along the container wall; c gas outlet pipe, which is connected to the upper end of the container along the container axis; and b liquid outlet pipe, which is connected to the bottom end of the container along the container axis. All three pipes are connected to the interior of the container.

[0036] The container is equipped with: a liquid baffle 6 located in the middle of the container to prevent liquid from rising; and a baffle plate located at the top of the container to enhance the gas-liquid separation effect.

[0037] The baffle plate is composed of an inner ring plate 1 and an outer ring plate 2 alternately. The outer ring plate 2 is connected to the inner wall of the container. The inner ring plate 1 is connected to the fixed plate 3 through a support column. The fixed plate 3 is set in the gas outlet c pipe and is connected and fixed to the upper end of the gas outlet c pipe. The upper end of the support column is connected to the fixed plate 3 and the lower end is connected to the inner ring plate 1 of the baffle plate, so that the baffle plate is fixed to the upper area of ​​the container.

[0038] The gas outlet c pipe has an enlarged section at the fixed plate 3 to increase the opening area required for the support installation, so that the opening area at the upper end of the gas outlet c pipe is comparable to the pipe diameter, thereby reducing the impact of the fixed plate 3 on the gas flow rate.

[0039] A conical tailstock is provided above the fixed plate 3 to integrate and stabilize the airflow flowing through the opening of the fixed plate 3.

[0040] The container is cylindrical.

[0041] When using the gas-liquid separation function of the device, the feed liquid is fed into the gas-liquid mixture inlet a by air lifting. The feed liquid is injected at a certain angle at the gas-liquid mixture inlet a, causing it to flow tangentially along the tank wall. The feed liquid swirls on the tank wall, stirring the original feed liquid inside the tank and achieving the gas-liquid separation effect. As the feed liquid swirls on the tank wall, the baffle plate 6 prevents the tangentially entering feed liquid from climbing upwards along the tank wall. The fluid will continuously swirl along the tank wall before reaching the resident liquid inside the tank. When the overflow flow rate is stable, the feed air pressure is adjusted to control the feed flow rate. After the feed liquid is stirred, the gas in it separates from the liquid and flows upwards spontaneously, achieving the gas-liquid separation effect. The gas contains tiny liquid droplets. Before entering the gas outlet c, this fluid bypasses the baffle corridor formed by the inner ring plate 1 and the outer ring plate 2. The gas carrying droplets increases the path of the gas-liquid mixture, thus increasing the settling time of the liquid phase. This allows the liquid phase to settle sufficiently, further reducing the liquid content in the exhaust gas. Since the exhaust gas contains only a very small amount of liquid phase, and the ring plates have a certain inclination angle, the condensed droplets fall layer by layer with the ring plates as the fluid flows between them, making it difficult for the baffle corridor to be blocked. The liquid after gas-liquid separation is then sent to the corresponding container through the liquid outlet b.

[0042] Optionally, by adding a liquid outlet pipe in the middle of the container, below the inlet pipe of the gas-liquid mixture, and adjusting the pipe diameter, the device can function as a constant liquid pre-tank, achieving a constant outflow liquid level. When using the constant liquid pre-tank function of the device, the separation process remains basically unchanged as described above. The gas-liquid mixture enters through the gas-liquid mixture inlet pipe a, and the separated gas passes through a baffle plate and is discharged upwards through the gas outlet pipe c. Because the diameter of the liquid outlet b at the lower end of the constant liquid pre-tank is small, the separated liquid can remain in the tank. When the liquid level rises to the overflow port d, the liquid in the container will steadily overflow into the corresponding container through the overflow port d. When the constant liquid pre-tank uses the overflow port d for overflow, the liquid level in the tank is basically maintained, and the liquid at the liquid outlet b is in a static state, which is prone to blockage. Therefore, at the outlet enlargement section 5, the pipe diameter of the liquid outlet b is increased to delay pipe blockage.

[0043] The gas-liquid mixture inlet a is manufactured integrally with the tank body through casting, and a coating is added to the surface to reduce the corrosion of the tank body by the fluid.

[0044] The present application has been described in detail above with reference to the accompanying drawings and embodiments. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present application. All content not described in detail in this application can be derived from existing technology.

Claims

1. A device that can effectively improve gas-liquid separation performance, characterized in that, The main body of the device is a container, and the bottom of the container is provided with a conical bottom section, and the container is connected to the conical bottom section; The container is connected to three pipes: a gas-liquid mixture inlet pipe, which is tangentially connected to the middle of the container along the container wall; a gas outlet pipe, which is connected to the upper end of the container along the container axis; and a liquid outlet pipe, which is connected to the bottom end of the container along the container axis. All three pipes are connected to the interior of the container. The container is equipped with: a liquid baffle located in the middle of the container to prevent liquid from rising; and a baffle located at the top of the container to enhance the gas-liquid separation effect. The baffle plate is composed of alternating inner and outer ring plates. The outer ring plate is connected to the inner wall of the container, and the inner ring plate is connected to the fixed plate through a support column. The fixed plate is set in the gas outlet pipe and is connected and fixed to the upper end of the gas outlet pipe. The upper end of the support column is connected to the fixed plate, and the lower end is connected to the inner ring plate of the baffle plate, so that the baffle plate is fixed to the upper region of the container. The gas outlet pipe has an enlarged section at the fixed plate to increase the opening area required for the support installation, so that the opening area at the upper end of the gas outlet pipe is comparable to the pipe diameter, thereby reducing the impact of the fixed plate on the gas flow rate. A conical tailstock is provided above the fixed plate to integrate and stabilize the airflow passing through the opening of the fixed plate.

2. The device for effectively improving gas-liquid separation according to claim 1, characterized in that, The container is cylindrical.

3. The device for effectively improving gas-liquid separation according to claim 2, characterized in that, The gas-liquid mixture inlet pipe is tangential to the container wall, so that the gas-liquid mixture forms a swirling flow on the inner wall of the container after entering the container, which increases the path of the gas-liquid mixture to the liquid surface and also increases the fluid velocity.

4. The device for effectively improving gas-liquid separation according to claim 3, characterized in that, The liquid barrier is a ring-shaped structure fixed to the inner wall of the container to prevent liquid from rising with the gas.

5. The device for effectively improving gas-liquid separation according to claim 4, characterized in that, The baffle plate has an alternating inner and outer ring plate to form a multi-layer structure. The gap between the inner and outer plates increases the fluid movement distance, which is used for droplet condensation and reflux.

6. The device for effectively improving gas-liquid separation according to claim 5, characterized in that, By adding a liquid outlet pipe in the middle of the container, below the inlet pipe of the gas-liquid mixture, and adjusting the pipe diameter, the device can function as a constant liquid pre-tank, achieving a constant outflow liquid level.

7. The device for effectively improving gas-liquid separation according to claims 1-6, characterized in that, The gas-liquid mixture inlet pipe and container are manufactured by integral casting, and a coating is added to the surface to reduce the corrosion of the container by the fluid.

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