A gas-liquid separator of a mother liquor drier
Patent Information
- Application Number
- CN202522045103.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-09-23
AI Technical Summary
[0003]传统的螺旋分离器在结构设计上存在以下问题：气流通道通常被设计得较为狭窄，这导致分离器内部的气流空间小，气体流速过快过高的气速会使得已经分离到器壁的液滴被气流再次卷起，导致气流夹带严重，降低分离效率；气流在狭窄的通道内高速流动，压降大，限制气液分离器的气体处理量
本实用新型的母液干化机的气液分离器，通过在导流筒上开设气流通道，增加气体的流通路径和总流道面积，可以有效降低分离器内的气流速度，气速的降低，可以显著减少出口气体的液滴夹带量，能提升最终出水的水质；
Smart Images
Figure CN224912096U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mother liquor drying machine technology, specifically to a gas-liquid separator for a mother liquor drying machine. Background Technology
[0002] In the process of drying mother liquor for waste liquid treatment, it is usually necessary to separate the gas containing liquid droplets in order to recover the liquid and purify the gas. The gas-liquid separator is the key equipment to achieve this goal. Existing mother liquor dryers often use spiral separators, whose basic principle is to use the centrifugal force generated by the spiral airflow to throw the denser liquid droplets against the wall of the separator and collect them, while the less dense gas is separated from the liquid.
[0003] Traditional spiral separators have the following structural design problems: the airflow channel is usually designed to be relatively narrow, which results in a small airflow space inside the separator. Excessive gas velocity will cause the liquid droplets that have been separated to the wall to be re-entrained by the airflow, resulting in severe airflow entrainment and reduced separation efficiency. The high-speed flow of air in the narrow channel results in a large pressure drop, which limits the gas throughput of the gas-liquid separator. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a gas-liquid separator for a mother liquor dryer, which can reduce the pressure drop caused by the structural characteristics of the spiral separator, thereby increasing the equipment's throughput. At the same time, it can reduce the amount of salt-containing droplets entrained in the rising airflow to a certain extent.
[0005] The technical solution is as follows: A gas-liquid separator for a mother liquor drying machine includes an outer cylinder, a spiral separator is disposed inside the outer cylinder, an airflow inlet is disposed at one end of the outer cylinder, an airflow outlet is disposed at the other end of the outer cylinder, a top cover is disposed at the upper end of the spiral separator, the top cover can isolate the airflow inlet and the airflow outlet, characterized in that: the spiral separator includes an inner cylinder and a guide tube located inside the inner cylinder, a tangential airflow inlet is disposed on the inner cylinder, airflow enters the flow between the inner cylinder and the guide tube from the tangential airflow inlet, a plurality of airflow channels are formed by slits in the cylinder wall of the guide tube, airflow can enter the interior of the guide tube through the airflow channels, the interior of the guide tube is connected to the airflow outlet, and a salt droplet outlet is disposed at the bottom of the inner cylinder.
[0006] Furthermore, the lower end of the inner cylinder is provided with a liquid collecting funnel, the bottom of the liquid collecting funnel is provided with the salt-containing droplet outlet, and the salt-containing droplet outlet is connected to a return pipe.
[0007] Furthermore, the tangential airflow inlet includes an airflow guide plate arranged along the tangential direction of the inner cylinder of the spiral separator.
[0008] Furthermore, the opening direction of the airflow channel is at an angle θ with the flow direction of the airflow between the inner cylinder and the guide cylinder, and the angle θ ranges from 45° to 90°.
[0009] Furthermore, a filter screen is provided at the upper end of the inner cylinder.
[0010] Furthermore, the filter screen has one or more layers.
[0011] Furthermore, the tangential airflow inlet is located at the upper part of the inner cylinder, and the airflow channel is located at the lower part of the guide tube. Furthermore, the top of the outer cylinder is also provided with an openable end cap, which is locked to the outer cylinder by a lifting eye nut.
[0012] Furthermore, a rotating shaft fixing plate is provided on the outer cylinder, and a rotating shaft part is correspondingly provided on the end cover. The end cover and the outer cylinder are hingedly connected through the rotating shaft fixing plate and the rotating shaft part.
[0013] Furthermore, the outer cylinder is equipped with a sensor interface and a rinsing port.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The gas-liquid separator of the mother liquor dryer of this utility model increases the gas flow path and total flow area by opening an airflow channel on the guide tube, which can effectively reduce the airflow velocity in the separator. The reduction of gas velocity can significantly reduce the amount of liquid droplets entrained in the outlet gas and improve the water quality of the final effluent. The newly designed airflow channel in the gas-liquid separator of the mother liquor dryer of this utility model provides more flow paths for the gas, reduces fluid resistance, and reduces the pressure drop of the entire separator, which can handle a larger flow of gas and effectively improve the overall processing capacity of the mother liquor dryer. In addition, since the opening direction of the airflow channel can be designed to have a certain angle with the airflow direction, according to the principle of inertia, the residual droplets that are not completely separated by centrifugal force are difficult to follow the airflow to make a sharp turn and enter the airflow channel due to their large inertia. Instead, they will continue to move in the original direction and eventually be thrown onto the inner cylinder wall, which can form a secondary inertial separation and further improve the separation efficiency. Attached Figure Description
[0015] Figure 1 This is a perspective view of the gas-liquid separator of a mother liquor drying machine in the embodiment; Figure 2 This is a front view of the gas-liquid separator of a mother liquor drying machine in one embodiment; Figure 3 for Figure 2 A sectional view along the AA direction; Figure 4 This is a perspective view of the spiral separator in the embodiment; Figure 5 This is a rear view of the spiral separator in the embodiment; Figure 6 for Figure 5 A sectional view along the BB direction; Figure 7 A perspective view of the inner cylinder of the spiral separator in the embodiment after it has been made transparent; Figure 8 A three-dimensional view of the outer cylinder of the gas-liquid separator of the mother liquor dryer in the embodiment after it has been made transparent. Detailed Implementation
[0016] See Figures 1 to 8 This utility model discloses a gas-liquid separator for a mother liquor drying machine, comprising an outer cylinder 1, a spiral separator 2 disposed inside the outer cylinder 1, an airflow inlet 3 disposed at the bottom of the outer cylinder 1, an airflow outlet 4 disposed at the top of the outer cylinder 1, and a top cover 5 disposed at the upper end of the spiral separator 2. The top cover 5 can seal the gap between the outer cylinder 1 and the spiral separator 2, thereby isolating the airflow inlet 3 and the airflow outlet 4. Gas entering from the airflow inlet 3 of the outer cylinder 1 cannot flow directly to the airflow outlet 4 and must be separated by the spiral separator 2. In this embodiment, the spiral separator 2 has a double-layer cylindrical structure. The spiral separator 2 includes an inner cylinder 7 and a guide cylinder 8 located inside the inner cylinder 7. A tangential airflow inlet 9 is provided on the inner cylinder 7. The airflow enters the flow between the inner cylinder 7 and the guide cylinder 8 from the tangential airflow inlet 9. A plurality of airflow channels 10 are formed by slits on the cylinder wall of the guide cylinder 8. The airflow can enter the interior of the guide cylinder 8 through the airflow channels 10. In this embodiment, the tangential airflow inlet 9 is preferably located at the upper part of the inner cylinder 7, and the airflow channel 10 is preferably located at the lower part of the guide tube 8, corresponding to the downstream section of the airflow spiral motion. This can extend the path of airflow spiral separation. When most of the droplets have been separated in the front section of the spiral motion, the relatively clean gas can enter the central cavity of the guide tube 8 through the airflow channel 10 when it flows through the area corresponding to the airflow channel. The central cavity of the guide tube is connected to the airflow outlet 4 at the top. The bottom of the inner cylinder 7 is provided with a salt droplet outlet 11.
[0017] In this embodiment, gas enters the outer cylinder and enters the built-in spiral separator through the tangential airflow inlet. Under the action of inertia, the airflow moves downward in a spiral shape. Under the action of centrifugal force, the entrained liquid droplets are thrown towards the inner wall of the inner cylinder. The outer wall side of the guide tube is a clean airflow with fewer entrained liquid droplets. When the airflow moves to the opening of the airflow channel of the guide tube, the clean gas inside will enter the interior of the guide tube from the airflow channel and finally be discharged from the airflow outlet. The droplets are thrown against the inner wall of the inner cylinder. In order to effectively collect these liquids, a liquid collecting funnel 12 is provided at the lower end of the inner cylinder. The shape of the liquid collecting funnel 12 is conducive to the collection of liquids. A salt droplet outlet is provided at the bottom of the liquid collecting funnel 12. The salt droplet outlet is connected to a return pipe 6 for drawing out or recovering the separated mother liquor. In one embodiment, the tangential airflow inlet may include an airflow guide plate 20 arranged along the tangential direction of the inner cylinder. The airflow guide plate 20 can guide the airflow into the annular space between the inner cylinder 7 and the guide tube 8 more smoothly and efficiently, forming a stable spiral flow field, which is beneficial to the separation of droplets under the action of centrifugal force.
[0018] To further improve separation efficiency, in one embodiment, the opening direction of the airflow channel 10 is at an angle θ with the flow direction of the airflow between the inner cylinder and the guide tube. The angle θ ranges from 45° to 90°. In this embodiment, the angle θ is set to 60° or 50°, etc. Since the opening direction of the airflow channel is at an angle with the flow direction of the airflow between the inner cylinder and the guide tube, the angle setting makes the opening direction of the airflow channel roughly opposite to the airflow direction. The droplets that are not separated by centrifugal force will continue to move forward under inertia and miss the airflow channel. The airflow channel on the guide tube is equivalent to increasing the flow channel area in the built-in spiral separator, thereby reducing the pressure drop.
[0019] In order to obtain higher quality purified gas, in this embodiment, one or more layers of filter screen 19 can be set at the upper part of the spiral separator 2, corresponding to the gas leaving the guide tube 8 and entering the airflow outlet 4. The filter screen 19 can capture any very small amount of fine mist droplets that may be present.
[0020] To facilitate the inspection, cleaning, or replacement of internal components, an openable end cap 13 can be designed on the top of the outer cylinder 1 in this embodiment. The end cap 13 is locked and sealed to the flange of the outer cylinder 1 by fasteners such as eye bolts and nuts 18. In addition, to make opening the end cap 13 easier and more convenient, a rotating shaft fixing plate 14 can be provided on the outer cylinder 1, and a corresponding rotating shaft part 15 can be provided on the end cap 13. Through the engagement of the pin, a hinged connection is formed, allowing the end cap to be rotated open.
[0021] In addition, for ease of monitoring and maintenance, in this embodiment, a sensor interface 16 and a flushing port 17 can be provided on the outer cylinder. The sensor interface 16 can be connected to a pressure sensor and a temperature sensor for online monitoring of the equipment's operating status, and the flushing port 17 is used for periodic internal flushing.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A gas-liquid separator for a mother liquor drying machine, comprising an outer cylinder, a spiral separator disposed within the outer cylinder, an airflow inlet at one end of the outer cylinder, an airflow outlet at the other end of the outer cylinder, and a top cover at the upper end of the spiral separator, the top cover being capable of isolating the airflow inlet and the airflow outlet, characterized in that: The spiral separator includes an inner cylinder and a guide tube located inside the inner cylinder. The inner cylinder is provided with a tangential airflow inlet, and the airflow enters the space between the inner cylinder and the guide tube from the tangential airflow inlet. The guide tube has slits in its wall to form several airflow channels, through which the airflow can enter the interior of the guide tube. The interior of the guide tube is connected to the airflow outlet, and the bottom of the inner cylinder is provided with a salt droplet outlet.
2. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The lower end of the inner cylinder is provided with a liquid collecting funnel, and the bottom of the liquid collecting funnel is provided with a salt-containing droplet outlet, which is connected to a return pipe.
3. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The tangential airflow inlet includes an airflow guide plate arranged along the tangential direction of the inner cylinder of the spiral separator.
4. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The opening direction of the airflow channel forms an angle θ with the flow direction of the airflow between the inner cylinder and the guide cylinder, and the angle θ ranges from 45° to 90°.
5. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: A filter screen is provided at the upper end of the inner cylinder.
6. The gas-liquid separator of a mother liquor drying machine according to claim 5, characterized in that: The filter screen has one or more layers.
7. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The tangential airflow inlet is located at the upper part of the inner cylinder, and the airflow channel is located at the lower part of the guide tube.
8. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The top of the outer cylinder is also provided with an openable end cap, which is locked to the outer cylinder by a lifting eye nut.
9. The gas-liquid separator of a mother liquor drying machine according to claim 8, characterized in that: The outer cylinder is provided with a rotating shaft fixing plate, and the end cover is provided with a corresponding rotating shaft part. The end cover and the outer cylinder are hinged together by the rotating shaft fixing plate and the rotating shaft part.
10. The gas-liquid separator of a mother liquor drying machine according to claim 1, characterized in that: The outer cylinder is equipped with a sensor interface and a rinsing port.