Flow filtering type separation system and flow filtering type separator thereof

Abstract

The utility model discloses a flowing filtering type separator which comprises a separator cavity, a circulating liquid inlet, a circulating liquid outlet, a crystal slurry reflux inlet, a crystal slurry outlet, a steam outlet and a filtering partition plate. A closed cavity is formed in the separator cavity, the filter partition plate is arranged in the closed cavity and is in assembly connection with the separator cavity, the closed cavity is divided into a first cavity and a second cavity by the filter partition plate, and the second cavity comprises an upper cavity and a lower cavity, the upper cavity and the first cavity are jointly spliced to form a cylindrical cavity, and the lower cavity is in a big-end-up funnel shape. The upper cavity is respectively communicated with the circulating liquid inlet and the crystal slurry reflux inlet, and the crystal slurry outlet is communicated with the lower cavity; the first cavity is respectively communicated with the circulating liquid outlet and the steam outlet; therefore, the solid-containing liquid can be directly filtered, so that the operation cost is reduced, the automatic management is facilitated, the delivery installation of pipelines is reduced, and the heat loss of the whole system is minimized. In addition, the utility model also discloses a flow filtering type separation system.

Description

Technical Field

[0001] This utility model relates to a solid-liquid and gas-liquid separation device used in wastewater treatment processes, and more particularly to a flow filtration separation system and its flow filtration separator. Background Technology

[0002] As is well known, in the solution separation (filtration) industry, the separation of solid solutions is often required to separate the solids from the filtrate in order to meet the needs of subsequent operations.

[0003] Currently, for forced circulation evaporation systems or multi-effect evaporation systems used for solution separation, vertical or horizontal separation chambers are selected as gas-liquid separation devices, and centrifuges are selected as solid-liquid separation devices. However, due to unreasonable design, the existing vertical or horizontal separation chambers used in conjunction with heat exchangers cannot directly filter liquids containing solids, which correspondingly increases operating costs, external pipeline installation, and heat loss of the entire system.

[0004] Therefore, there is an urgent need for a flow filtration separation system and its flow filtration separator to overcome one or more of the above-mentioned defects. Utility Model Content

[0005] One objective of this invention is to provide a flow filter separator that can directly filter solid-liquid mixtures in one operation, thereby reducing operating costs, facilitating automated management, reducing the need for external pipeline installation, and minimizing heat loss in the entire system.

[0006] One objective of this invention is to provide a flow filtration separation system that can directly filter solid-liquid mixtures in one operation, thereby reducing operating costs, facilitating automated management, reducing the need for external pipeline installation, and minimizing heat loss of the entire system.

[0007] To achieve the above objectives, the flow filter separator of this utility model includes a separator cavity, a circulating liquid inlet, a circulating liquid outlet, a crystal slurry reflux outlet, a crystal slurry outlet, a steam outlet, and a filter baffle. The circulating liquid inlet and the crystal slurry reflux outlet are each located above the crystal slurry outlet, and the steam outlet is located above the circulating liquid outlet. The separator cavity has a closed chamber inside. The filter baffle is placed in the closed chamber and assembled and connected to the separator cavity. The filter baffle divides the closed chamber into a first cavity and a second cavity. The second cavity includes an upper cavity that, together with the first cavity, forms a cylindrical cavity, and a lower cavity that is funnel-shaped (larger at the top and smaller at the bottom). The upper cavity communicates with the circulating liquid inlet and the crystal slurry reflux outlet, respectively. The crystal slurry outlet communicates with the lower cavity, and the first cavity communicates with the circulating liquid outlet and the steam outlet, respectively.

[0008] Compared with the prior art, since the filter baffle is placed in the closed cavity and assembled and connected to the separator cavity, and the filter baffle divides the closed cavity into a first cavity and a second cavity, the second cavity includes an upper cavity for forming a cylindrical cavity together with the first cavity and a lower cavity that is funnel-shaped with a larger upper part and a smaller lower part. The upper cavity is connected to the circulating liquid inlet and the crystal slurry return port, and the crystal slurry outlet is connected to the lower cavity. The first cavity is connected to the circulating liquid outlet and the steam outlet. This design allows the crystals generated by the flash evaporation of the liquid to be treated entering from the circulating liquid inlet to be intercepted by the filter baffle and enter the funnel-shaped lower cavity. Thus, the flow filter separator of this utility model combines separation and filtration, thereby achieving the goal that "the flow filter separator of this utility model can directly perform a filtration operation on the solid-liquid mixture, thereby reducing operating costs, facilitating automated management, reducing the external installation of pipelines, and minimizing the heat loss of the entire system".

[0009] Preferably, the filter baffle is also inclined from bottom to top toward the circulating liquid inlet, and the filter baffle has a plurality of filter holes that are spaced apart from each other and arranged in an array.

[0010] Preferably, the filter plate is elliptical.

[0011] Preferably, the circulating liquid inlet is located above the crystal slurry return port and is arranged on the same side as the crystal slurry return port.

[0012] Preferably, the crystal slurry reflux port and the circulating liquid outlet are arranged on opposite sides, and the crystal slurry reflux port is also offset upward relative to the circulating liquid outlet.

[0013] Preferably, the crystal slurry outlet is located directly below the lower cavity.

[0014] Preferably, the circulating liquid inlet, circulating liquid outlet, crystal slurry return port, crystal slurry outlet, and steam outlet are all flange interfaces.

[0015] To achieve the above objectives, the flow filtration separation system of this utility model includes a heat exchanger, a first circulation pump, and the aforementioned flow filtration separator. The first circulation pump is configured to circulate the feed liquid between the flow filtration separator and the heat exchanger.

[0016] Preferably, the flow filtration separation system of this invention further includes a second circulation pump, which is connected to the crystal slurry reflux port and the crystal slurry outlet respectively.

[0017] Preferably, the inlet of the first circulating pump is connected to the outlet of the circulating liquid, and the heat exchanger is connected to both the outlet of the first circulating pump and the inlet of the circulating liquid; the pressure inside the heat exchanger is greater than the pressure inside the separator cavity. Attached Figure Description

[0018] Figure 1 This is a plan view of the flow filtration separation system of this utility model.

[0019] Figure 2 yes Figure 1 The diagram shows a plan view of the flow filter separator in the flow filtration separation system.

[0020] Figure 3 yes Figure 2 The diagram shows the internal structure of a flow filter separator.

[0021] Figure 4 yes Figure 2 The diagram shows a plan view of the filter baffle in the flow filter separator at another angle. Detailed Implementation

[0022] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] Please see Figure 1 The flow filtration separation system 100 of this utility model includes a flow filtration separator 10, a heat exchanger 20, a first circulation pump 30, and a second circulation pump 40. The first circulation pump 30 is configured to circulate the feed liquid between the flow filtration separator 10 and the heat exchanger 20 to meet the need for continuous circulation and heat exchange of the feed liquid; the second circulation pump 40 is connected to the crystal slurry return port 14 and the crystal slurry outlet 15, as described below, to meet the need for continued heating and concentration of the concentrate in the lower cavity 1122, as described below.

[0024] Combined Figure 2 and Figure 3 As an example, the flow filter separator 10 includes a separator chamber 11, a circulating liquid inlet 12, a circulating liquid outlet 13, a crystal slurry return outlet 14, a crystal slurry outlet 15, a steam outlet 16, and a filter baffle 17. The circulating liquid inlet 12 and the crystal slurry return outlet 14 are each located above the crystal slurry outlet 15. Optionally, they are located above the crystal slurry outlet 15. Figures 1 to 3 In this example, the circulating liquid inlet 12 is located above the crystal slurry return outlet 14 and is arranged on the same side as the crystal slurry return outlet 14. For example, in Figures 1 to 3 In this design, both the circulating liquid inlet 12 and the crystal slurry return outlet 14 are located on the left side wall of the separator cavity 11. This design ensures that the crystal slurry is transported from below along with the feed liquid in the upper cavity 1121 to the first cavity 111. This facilitates the filtration of crystals in the feed liquid by the filter baffle 17, and also facilitates the operation of the filter baffle 17 being circulated and cleaned by the cleaning liquid entering from the circulating liquid inlet 12 and exiting from the circulating liquid outlet 13. Obviously, depending on actual needs, the circulating liquid inlet 12 can also be arranged on opposite sides of the crystal slurry return outlet 14, so it is not necessary to... Figures 1 to 3 The above is the limit.

[0025] Meanwhile, the steam outlet 16 is located above the circulating liquid outlet 13 to better meet the need for flash steam generated by the instantaneous evaporation of water in the liquid to be discharged through the steam outlet 16. Optionally, it is located above the circulating liquid outlet 13. Figures 1 to 3 In this example, the steam outlet 16 is located on the upper right side of the top of the separator chamber 11, while the circulating liquid outlet 13 is located on the lower end of the right side wall of the separator chamber 11. This ensures that the liquid entering the separator chamber 11 through the circulating liquid inlet 12 can flow out more completely from the circulating liquid outlet 13. Obviously, depending on actual needs, the steam outlet 16 and the circulating liquid outlet 13 can also be arranged in other suitable positions within the separator chamber 11. Figures 1 to 3 The above is the limit.

[0026] Furthermore, the separator cavity 11 has a closed cavity 11a inside, and the filter baffle 17 is placed in the closed cavity 11a and assembled and connected to the separator cavity 11. The separator cavity 11 provides a stabilizing effect on the filter baffle 17. The filter baffle 17 divides the closed cavity 11a into a first cavity 111 and a second cavity 112. The second cavity 112 includes an upper cavity 1121 for forming a cylindrical cavity together with the first cavity 111 and a lower cavity 1122 that is funnel-shaped with a larger upper cavity and a smaller lower cavity. The upper cavity 1121 is connected to the circulating liquid inlet 12 and the crystal slurry liquid, respectively. The return port 14 is connected to better meet the requirement that the feed liquid entering from the circulating liquid inlet 12 and the crystal slurry entering from the crystal slurry return port 14 both enter the upper cavity 1121; the crystal slurry outlet 15 is connected to the lower cavity 1122 to meet the requirement that the crystals intercepted by the filter baffle 17 enter the lower cavity 1122; the first cavity 111 is connected to the circulating liquid outlet 13 and the steam outlet 16 respectively to meet the requirement that the feed liquid undergoes flash evaporation at the separator cavity 11 and the flashed feed liquid is discharged from the separator cavity 11 through the circulating liquid outlet 13. Specifically, in Figure 4 In this example, the filter partition 17 has a plurality of filter holes 171 spaced apart from each other and arranged in an array. Preferably, all filter holes 171 are evenly arranged to facilitate the manufacturing process of the filter holes 171 on the filter partition 17, thus simplifying the manufacturing process of the filter holes 171. Obviously, depending on actual needs, all filter holes 171 can also be arranged non-uniformly, so it is not necessary to... Figure 4 The above is for reference only; additionally, at [date / time], Figure 3 In this example, the filter baffle 17 is also inclined from bottom to top towards the circulating liquid inlet 12. Therefore, the inclined installation of the filter baffle 17 facilitates the free fall of the filter media (crystals in the liquid) into the lower cavity 1122, reducing the risk of clogging of the filter holes 171 and thus extending the service life of the filter baffle 17. More specifically, as follows:

[0027] like Figure 4 As shown, the filter baffle 17 is elliptical to better match the contour of the closed cavity 11a. This is because the filter baffle 17 is installed at an angle, and the upper cavity 1121 and the first cavity 111 are joined together to form a cylindrical cavity. Correspondingly, the use of an elliptical filter baffle 17 makes the outer edge of the filter baffle 17 fit more tightly with the separator cavity 11.

[0028] like Figures 1 to 3 As shown, as an example, the slurry reflux port 14 and the circulating liquid outlet 13 are arranged on opposite sides, for example, in... Figures 1 to 3In this design, the slurry return port 14 is located at the lower end of the left side wall of the separator chamber 11, and the circulating liquid outlet 13 is located at the lower end of the right side wall of the separator chamber 11. Furthermore, the slurry return port 14 is offset upwards relative to the circulating liquid outlet 13 to better facilitate the continuous circulation, heating, and concentration of the concentrate entering the upper cavity 1121 from the slurry return port 14, along with the feed liquid entering the upper cavity 1121 from the circulating liquid inlet 12. Additionally, the slurry outlet 15 is located directly below the lower cavity 1122 to facilitate the outflow of the concentrate from the lower cavity 1122. Specifically, in... Figures 1 to 3 In this example, the circulating liquid inlet 12, circulating liquid outlet 13, crystal slurry return port 14, crystal slurry outlet 15, and steam outlet 16 are all flange interfaces, which facilitates pipe connection operations for operators. Obviously, depending on actual needs, the circulating liquid inlet 12, circulating liquid outlet 13, crystal slurry return port 14, crystal slurry outlet 15, and steam outlet 16 can also be other types of interfaces well known in the art; therefore, they are not specified. Figures 1 to 3 The above is the limit.

[0029] like Figure 1 As shown, as an example, the inlet end 31 of the first circulating pump 30 is connected to the circulating liquid outlet 13, and the heat exchanger 20 is connected to the outlet end 32 of the first circulating pump 30 and the circulating liquid inlet 12, respectively, so as to provide the power for the circulating transport of the feed liquid between the separator chamber 11 and the heat exchanger 20 by means of the first circulating pump 30; in addition, the pressure in the heat exchanger 20 is greater than the pressure in the separator chamber 11, so as to meet the requirement of flash evaporation of the feed liquid entering the separator chamber 11. It should be noted that since the specific structure and working principle of the heat exchanger 20 are well known in the art and are not the innovation of this application, they will not be described in detail here.

[0030] The working principle of the flow filtration separation system of this utility model will be explained with reference to the accompanying drawings:

[0031] During operation, with the start of the first circulation pump 20, the liquid to be processed enters the separator chamber 11 through the circulation liquid inlet 12, and then flows out of the separator chamber 11 through the circulation liquid outlet 13 to exchange heat with the high-temperature medium in the heat exchanger 20.

[0032] After heat exchange, the liquid enters the separator chamber 11 through the circulating liquid inlet 12, and then flows to the heat exchanger 20 through the circulating liquid outlet 13, achieving the purpose of continuous circulation and heating of the liquid. Because the pressure in the heat exchanger 20 is greater than the pressure in the separator chamber 11, the liquid entering the separator chamber 11 through the circulating liquid inlet 12 undergoes flash evaporation due to a sudden pressure drop, thereby causing the water in the liquid to evaporate instantly and generate flash steam that is discharged from the steam outlet 16.

[0033] After flash evaporation, the liquid concentrates and crystals form. As the liquid flows toward the circulating liquid outlet 13, the crystals are intercepted by the filter baffle 17 and fall into the lower cavity 1112. The remaining concentrate continues to circulate and heat until the desired process requirements are met.

[0034] It should be noted that at the beginning of operation, because the concentration of the concentrate in the lower cavity 1112 is insufficient, the second circulation pump 40 draws the concentrate out from the crystal slurry outlet 15, and then pumps the drawn-in concentrate into the upper cavity 1121 through the crystal slurry return port 14. This allows the concentrate pumped into the upper cavity 1121 to continue circulating and heating together with the feed liquid entering through the circulation liquid inlet 12, thereby achieving the desired concentration. Furthermore, when it is necessary to clean the filter plate 17, the cleaning liquid can continuously enter through the circulation liquid inlet 12 and flow out through the circulation liquid outlet 13 to perform a backwashing operation on the filter plate 17.

[0035] Compared with the prior art, since the filter baffle 17 is placed in the closed cavity 11a and assembled and connected with the separator cavity 11, and the filter baffle 17 divides the closed cavity 11a into a first cavity 111 and a second cavity 112, and the second cavity 112 includes an upper cavity 1121 for forming a cylindrical cavity together with the first cavity 111 and a lower cavity 1122 that is funnel-shaped with a larger upper part and a smaller lower part, the upper cavity 1121 is connected to the circulating liquid inlet 12 and the crystal slurry return port 14 respectively, and the crystal slurry outlet 15 is connected to the lower cavity 1122. The first cavity 111 is divided into... The liquid is not connected to the circulating liquid outlet 13 and the steam outlet 16. This design ensures that the crystals generated by flash evaporation in the liquid to be treated entering through the circulating liquid inlet 12 are intercepted by the filter baffle 17 and enter the funnel-shaped lower cavity 1122. This allows the flow filter separator 100 to combine separation and filtration, thus achieving the goal that "the flow filter separator 100 can directly perform a filtration operation on the solid-liquid mixture, thereby reducing operating costs, facilitating automated management, reducing the need for external pipeline installation, and minimizing the heat loss of the entire system."

[0036] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A flow filter type separator comprising a separator cavity, a circulating liquid inlet, a circulating liquid outlet, a crystal slurry backflow port, a crystal slurry outlet, and a vapor outlet, the circulating liquid inlet and the crystal slurry backflow port each being located above the crystal slurry outlet, the vapor outlet being located above the circulating liquid outlet, the inside of the separator cavity having a closed cavity, characterized in that, The flow-filtering separator further comprises a filtering partition plate arranged in the closed cavity and connected with the separator cavity, the filtering partition plate separates the closed cavity into a first cavity and a second cavity, the second cavity comprises an upper cavity and a lower cavity in the shape of a funnel with a large upper part and a small lower part, the upper cavity is in communication with the circulating liquid inlet and the crystal slurry return port respectively, the crystal slurry outlet is in communication with the lower cavity, and the first cavity is in communication with the circulating liquid outlet and the steam outlet respectively.

2. The flow filter separator of claim 1, wherein, The filtering partition plate is inclined towards the circulating liquid inlet from bottom to top, and the filtering partition plate has a plurality of filtering holes arranged in an array.

3. The flow filter separator of claim 2, wherein, The filtering partition plate is elliptical.

4. The flow filter separator of claim 1, wherein, The circulating liquid inlet is arranged above and on the same side of the crystal slurry return port.

5. The flow filter separator of claim 4, wherein, The crystal slurry return port is arranged on the opposite side of the circulating liquid outlet, and the crystal slurry return port is upwardly offset relative to the circulating liquid outlet.

6. The flow filter separator of claim 1, wherein, The crystal slurry outlet is located directly below the lower cavity.

7. The flow filter separator of claim 1, wherein, The circulating liquid inlet, the circulating liquid outlet, the crystal slurry return port, the crystal slurry outlet and the steam outlet are all flange interfaces.

8. A flow filtration separation system comprising a heat exchanger and a first circulation pump, characterized in that, The flow-filtering separation system further comprises the flow-filtering separator according to any one of claims 1 to 7, and the first circulating pump is configured to circulate the material liquid between the flow-filtering separator and the heat exchanger.

9. The flow filtration separation system of claim 8, wherein, The flow-filtering separation system further comprises a second circulating pump in communication with the crystal slurry return port and the crystal slurry outlet respectively.

10. The flow filtration separation system of claim 8, wherein, The inlet end of the first circulating pump is in communication with the circulating liquid outlet, the heat exchanger is in communication with the outlet end of the first circulating pump and the circulating liquid inlet respectively, and the pressure in the heat exchanger is greater than the pressure in the separator cavity.

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