Efficient oil removal device

Abstract

The utility model relates to the technical field of fluid oil removal, and discloses an efficient oil removal device. The efficient oil removal device comprises a reaction shell, the reaction shell comprises a first side wall and a second side wall which are oppositely arranged, a feeding port is formed in the first side wall, and a discharging port is formed in the second side wall; the heating aeration area is located on the side of the feeding port and used for heating feed liquid and providing micro-nano bubbles to accelerate floating of oil drops in the feed liquid; the oil scraping area is positioned above the oil removing device and is used for scraping an oil layer on the fluid; the membrane filtration area is positioned below the oil removal device and is used for filtering residual tiny oil drops from the scraped fluid; wherein fluid enters from the feeding hole, sequentially passes through the heating aeration region, the oil scraping region and the membrane filtration region, and flows out from the discharging hole, so that the oil removal of the fluid is completed. The efficient oil removal device is good in oil-water separation effect, high in oil removal efficiency and high in oil recovery rate.

Description

Technical Field

[0001] The present application relates to the technical field of fluid oil removal, and in particular to a high-efficiency oil removal device. Background Art

[0002] Extraction is widely used in the extraction, purification, and impurity removal processes of hydrometallurgical production. It separates the target element from the impurity elements by exploiting the difference in their distribution coefficients in the extractant. However, this process places strict demands on the oil content of the aqueous phase, which not only affects product quality but also results in loss and waste of the extractant, leading to increased production costs.

[0003] Currently, the most widely used deoiling technology for aqueous materials in China is ultrasonic flotation for primary oil removal of entrained organic phases, followed by deep oil removal using adsorption columns (filled with activated carbon, resin, fiber balls, etc.). This direct deoiling method using ultrasonic flotation has the following drawbacks: Because the extractant and aqueous materials have relatively high viscosities at room temperature, the extractant often disperses in the aqueous material as fine oil droplets. During the aeration deoiling process, the oil droplets rise slowly under the action of microbubbles and are easily entrained in the aqueous material, resulting in poor oil-water separation and low oil removal efficiency.

[0004] The Chinese patent (publication number CN 220723699 U) describes an oil removal device that is divided into a feed zone and an oil removal zone along a front-to-back axis. A multi-stage baffle plate is provided in the oil removal zone, combined with aeration, to separate oil and water. However, this device does not accelerate the floating and aggregation of oil droplets in the aqueous phase. Furthermore, the oil layer in the oil collection area above the device is too thick and easily entrained by the aqueous phase under the dynamic action of the water flow, resulting in poor oil-water separation and low oil removal efficiency. Analysis shows that this patent does not constitute a high-efficiency oil removal device.

[0005] Therefore, the research purpose of this utility model is to design an oil removal device that can effectively reduce the entrainment of oil phase materials by water phase materials, thereby improving the separation effect of oil phase and water phase, and realizing efficient separation of oil and water. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] In view of the shortcomings of the existing technology, the embodiments of the present disclosure provide a high-efficiency oil removal device, which can efficiently remove oil phase materials from water phase materials by setting a heating aeration zone, an oil scraping zone and a membrane filtration zone.

[0008] According to the first aspect, an embodiment of the present disclosure provides a high-efficiency oil removal device, which includes a reaction shell, the reaction shell includes a first side wall and a second side wall arranged opposite to each other, the first side wall is provided with a feed port, and the second side wall is provided with a discharge port; a heating aeration zone, the heating aeration zone is located on the side of the feed port, and is used to heat the feed liquid and provide micro-nano bubbles to accelerate the floating of oil droplets in the feed liquid; an oil scraping zone, the oil scraping zone is located at the upper part of the entire oil removal device, and is used to scrape the oil layer on the fluid; a membrane filtration zone, the membrane filtration zone is located at the lower part of the entire oil removal device, and is used to filter the residual tiny oil droplets from the scraped fluid; wherein, the fluid enters from the feed port, passes through the heating aeration zone, the oil scraping zone and the membrane filtration zone in sequence, and flows out from the discharge port to complete the oil removal in the fluid.

[0009] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the reaction shell also includes a third side wall and a fourth side wall arranged opposite to each other, first, third, and fifth blocking components, and second, fourth, and sixth blocking components, wherein the first, third, and fifth blocking components are arranged on the fourth side wall and do not contact the third side wall, and the second, fourth, and sixth blocking components are arranged on the third side wall and do not contact the fourth side wall, so as to form a fluid channel from the feed port to the discharge port.

[0010] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the heating aeration zone includes: a heating device, which is arranged on the third side wall between the feed port and the first blocking component, and is used to heat the fluid entering from the feed port; an aeration device, which is arranged on the feed port side and the fourth side wall, and is used to generate bubbles adsorbed on the surface of oil droplets in the fluid to accelerate the floating and aggregation of oil droplets.

[0011] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the aeration device is a micro-nano bubble generator, and the micro-nano bubble generator generates bubbles with a diameter of 20-40 μm.

[0012] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the heating device is an electric heating device, which heats the temperature of the fluid to 40-60°C.

[0013] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the oil scraping area includes: an oil scraping device, the oil scraping device includes an oil scraping plate and a motor electrically connected to the oil scraping plate, and the oil scraping plate is arranged on the third side wall to scrape off the oil layer on the fluid when the fluid flows through.

[0014] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the membrane filtration area includes a hydrophilic and oleophobic membrane, which is arranged between the second, fourth, and sixth blocking components and the fourth side wall to further filter residual tiny oil droplets when the fluid flows through.

[0015] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the hydrophilic and oleophobic membrane is made of a non-woven fabric with a pore size of 60-80 μm, a thickness of 1.0 mm, and an air flux of 1700 L / (m2·s).

[0016] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the rear side of the second blocking component can be provided in pairs with blocking components respectively located on the third side wall and the fourth side wall to increase the length of the fluid channel.

[0017] In the preferred technical solution of the above-mentioned high-efficiency oil removal device, the high-efficiency oil removal device further comprises: a post-oil removal collection area, the post-oil removal collection area is located in the area near the discharge port

[0018] The high-efficiency oil removal device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] This high-efficiency oil removal device is equipped with a heating and aeration zone, an oil scraping zone, and a membrane filtration zone. Fluid enters the reactor shell through the feed port, passes through the heating and aeration zone, the oil scraping zone, and the membrane filtration zone, and then exits the reactor shell through the discharge port, removing oil from the fluid. This separation effectively separates the aqueous and oil phases.

[0020] In the heated aeration zone, the electric heating device heats the fluid to reduce the viscosity of the water phase and oil phase materials. The micro-nano bubbles generated by the aeration device are adsorbed on the surface of the oil droplets, accelerating the floating and aggregation of the oil droplets and improving the oil removal efficiency.

[0021] In the oil scraping area, an oil scraping device is used to regularly remove the oil layer on the surface of the aqueous phase material to prevent the oil layer from being too thick and being entrained by the aqueous phase, thereby deteriorating the oil removal effect.

[0022] In the membrane filtration area, a hydrophilic and oleophobic membrane is used to block and separate the residual tiny oil droplets in the water phase, further reducing the oil content in the water phase material.

[0023] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0025] Figure 1 A schematic diagram of a high-efficiency oil removal device provided by the utility model is shown.

[0026] Reference numerals:

[0027] 1. Reactor housing; 11. First side wall; 111. Feed port; 12. Second side wall; 121. Discharge port; 13. Third side wall; 14. Fourth side wall; 15. First blocking member; 16. Second blocking member; 17. Third blocking member; 18. Fourth blocking member; 19. Fifth blocking member; 20. Sixth blocking member;

[0028] 2. Heating aeration zone; 21. Heating device; 22. Aeration device;

[0029] 3. Oil scraping area; 31. Oil scraping device; 311. Oil scraper;

[0030] 4. Membrane filtration area; 41. Hydrophilic and oleophobic membrane;

[0031] 5. Collection area after oil removal. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0036] Unless otherwise stated, the term "plurality" means two or more.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0038] like Figure 1 As shown, an embodiment of the present disclosure provides a high-efficiency oil removal device, comprising a reaction shell 1, a heating and aeration zone 2, an oil scraping zone 3 and a membrane filtration zone 4. The reaction shell 1 comprises a first side wall 11 and a second side wall 12 arranged opposite to each other, the first side wall 11 being provided with a feed port 111, and the second side wall 12 being provided with a discharge port 121. The heating and aeration zone 2 is located on the side of the feed port 111, and is used to heat the feed liquid and provide micro-nano bubbles to accelerate the floating of oil droplets in the feed liquid. The oil scraping zone 3 is located at the upper part of the entire oil removal device, and is used to scrape off the oil layer on the fluid. The membrane filtration zone 4 is located at the lower part of the entire oil removal device, and is used to filter the residual tiny oil droplets from the scraped fluid. The fluid enters from the feed port 111 and passes through the heating and aeration zone 2, the oil scraping zone 3 and the membrane filtration zone 4 in sequence, and flows out from the discharge port 121 to complete the oil removal in the fluid.

[0039] Specifically, the reaction shell 1 is sealed except for the feed port 111 and the discharge port 121. A fluid, such as a solution of an aqueous phase material mixed with an oil phase material, enters the interior of the reaction shell 1 from the feed port 111. It then flows through the heated aeration zone 2, wherein the heated aeration zone 2 has the function of heating and accelerating. It first heats the fluid flowing through it, and at the same time provides micro-nano bubbles to accelerate the floating of oil droplets. The fluid then flows to the oil scraping zone 3, where the scraping action can be started for a long time or at a set time period, thereby scraping off the oil layer in the aqueous phase. The fluid then flows to the membrane filtration zone 4, where the residual tiny oil droplets in the aqueous phase are further separated. After two separations, the oil droplets in the fluid are separated, and the separation effect is good.

[0040] like Figure 1As shown, in the preferred technical solution of the present application, the reaction shell 1 further includes a third side wall 13 and a fourth side wall 14, first, third, and fifth blocking components 15, 17, and 19, and second, fourth, and sixth blocking components 16, 18, and 20, respectively. The first, third, and fifth blocking components 15, 17, and 19 are arranged on the fourth side wall 14 and do not contact the third side wall 13, and the second, fourth, and sixth blocking components 16, 18, and 20 are arranged on the third side wall 13 and do not contact the fourth side wall 14, so as to form a fluid channel from the feed port 111 to the discharge port 121. Figure 1 The direction of the zigzag arrow is the direction of fluid flow, that is, the location of the fluid channel.

[0041] Specifically, the reaction housing 1 is surrounded by four sidewalls: a first sidewall 11, a second sidewall 12, a third sidewall 13, and a fourth sidewall 14. The first, third, and fifth blocking members 15, 17, and 19, as well as the second, fourth, and sixth blocking members 16, 18, and 20, are all elongated. Preferably, the first, third, and fifth blocking members 15, 17, and 19, as well as the second, fourth, and sixth blocking members 16, 18, and 20, are of the same size. Both blocking members maintain a certain distance from the opposing sidewall to form a zigzag fluid channel, increasing the length of the fluid channel and thereby better achieving oil-water separation.

[0042] like Figure 1 As shown, in the preferred technical solution of the present application, the heated aeration zone 2 includes a heating device 21 and an aeration device 22. The heating device 21 is disposed on the third sidewall 13 between the feed inlet 111 and the first blocking member 15, and is used to heat the fluid entering from the feed inlet 111. The aeration device 22 is disposed on the fourth sidewall 14, and is used to generate bubbles that are adsorbed on the surface of oil droplets in the fluid to accelerate the floating and aggregation of the oil droplets.

[0043] Specifically, the heating device 21 can be elongated to increase the contact area with the fluid, thereby achieving rapid heating. The heating device 21 and the first barrier member 15 form the initial portion of the fluid flow channel. The aeration device 22 can preferably be located adjacent to the feed inlet 111 to aerate the fluid directly, facilitating the adsorption of generated bubbles on the surface of the fluid droplets. Preferably, the distance between the first, third, and fifth barrier members 15, 17, and 19 and the fourth sidewall 14 can be significantly less than the length of the first, third, and fifth barrier members 15, 17, and 19.

[0044] like Figure 1 As shown, in the preferred technical solution of the present application, the aeration device 22 is a micro-nano bubble generator, which generates bubbles with a diameter of 20-40 μm.

[0045] Specifically, the aeration device 22 includes a micro-nano bubble generator that can generate micro-nano bubbles to accelerate the floating of oil droplets. Bubbles with a diameter of 20-40 μm are preferred because they are more likely to adsorb on the surface of oil droplets, accelerating their floating and aggregation, and further improving oil removal efficiency.

[0046] like Figure 1 As shown, in the preferred technical solution of the present application, the heating device 21 is an electric heating device, which heats the temperature of the fluid to 40-60°C.

[0047] Specifically, the electric heating device is configured in an elongated strip shape, extending downward from the third side wall 13 to near the feed port 111, and being some distance away from the fourth side wall 14. Thus, a narrow fluid passage is formed between the electric heating device and the first blocking member 15, increasing the heating distance of the incoming fluid and achieving a good heating effect.

[0048] like Figure 1 As shown, in the preferred technical solution of the present application, the oil scraping area 3 includes: an oil scraping device 31, the oil scraping device 31 includes an oil scraping plate 311 and a motor electrically connected to the oil scraping plate 311, and the oil scraping plate 311 is arranged on the third side wall 13 on the opposite side of the first, third and fifth blocking components 15, 17 and 19 to scrape off the oil layer on the fluid when the fluid flows through.

[0049] Specifically, the oil scraper 311 can be positioned directly opposite the first, third, and fifth blocking members 15, 17, and 19. Furthermore, the oil scraper 311 can be designed to be wider than the first, third, and fifth blocking members 15, 17, and 19. The motor can constantly power the oil scraper 311, which can be used to regularly remove the oil layer on the surface of the aqueous material to prevent the oil layer from becoming too thick and being carried over into the aqueous phase, thereby deteriorating the oil removal effect.

[0050] like Figure 1 As shown, in the preferred technical solution of the present application, the membrane filtration area 4 includes a hydrophilic oleophobic membrane 41, which is arranged between the second, fourth, and sixth blocking components 16, 18, 20 and the fourth side wall 14, and is used to further filter residual tiny oil droplets when the fluid flows through.

[0051] Specifically, the hydrophilic oleophobic membrane 41 blocks and separates the residual oil droplets in the water phase, further reducing the oil content in the water phase material. The effect is more obvious after the oil scraper 311 scrapes off the oil layer on the surface of the water phase material.

[0052] like Figure 1 As shown, in the preferred technical solution of the present application, the hydrophilic oleophobic membrane 41 has a pore size of 60-80 μm, a thickness of 1.0 mm, and an air flux of 1700 L / (m 2 ·s) non-woven fabric.

[0053] Specifically, the material of the hydrophilic oleophobic membrane 41 is relatively flexible, as long as it can achieve the effect of hydrophilic oil filtration. And its size is also the same. In this application, the pore size is 60~80μm, the thickness is 1.0mm, and the air flow rate is 1700L / (m 2 The hydrophilic and oleophobic membrane 41 made of non-woven fabric of s) is the preferred size with the best hydrophilic and oil-filtering effect as proved by a large number of experiments.

[0054] like Figure 1 As shown, in the preferred technical solution of the present application, the rear sides of the second blocking components 16 can be arranged in pairs, respectively on the third side wall 13 and the fourth side wall 14 to increase the length of the fluid channel.

[0055] Specifically, in order to increase the length of the fluid channel, blocking components can be added in pairs. At the same time, in order to form a zigzag channel, the blocking components in pairs can be preferably arranged on the third side wall 13 and the fourth side wall 14 respectively.

[0056] Preferably, two pairs of blocking components are used on the rear side of the second blocking component 16, namely, the third blocking component 17, the fourth blocking component 18, the fifth blocking component 19 and the sixth blocking component 20. Corresponding oil scraping devices 31, that is, two pairs of oil scraping plates 311 and motors electrically connected to the oil scraping plates 311 are provided. Similarly, five more aeration devices 22 are added. Moreover, a hydrophilic and oleophobic membrane 41 is also provided on the fourth blocking component 18 and the sixth blocking component 20, respectively. The area where each aeration device 22 is located is an aeration area. The area where each oil scraper 311 is located is an oil scraping area 3. The area where each hydrophilic and oleophobic membrane 41 is located is also a membrane filtration area 4.

[0057] like Figure 1 As shown, in the preferred technical solution of the present application, the high-efficiency oil removal device further includes a post-oil removal collection area 5 , which is located in an area close to the discharge port 121 .

[0058] Specifically, the post-oil removal collection area 5 can temporarily store the filtered aqueous phase material, and the clarified solution can flow out through the discharge port 121 after precipitation.

[0059] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A high-efficiency oil removal device, characterized in that: include: A reaction shell, the reaction shell comprising a first side wall and a second side wall arranged opposite to each other, the first side wall being provided with a feed inlet, and the second side wall being provided with a discharge outlet; A heating aeration zone, located on the feed inlet side, is used to heat the feed liquid and provide micro-nano bubbles to accelerate the floating of oil droplets in the feed liquid; an oil scraping area, the oil scraping area being located at the upper portion of the entire oil removal device and being used for scraping off the oil layer on the fluid; A membrane filtration area, located at the lower part of the entire oil removal device, for filtering residual tiny oil droplets from the scraped fluid; The fluid enters from the feed port, passes through the heating and aeration zone, the oil scraping zone and the membrane filtration zone in sequence, and flows out from the discharge port to complete the oil removal in the fluid.

2. The high-efficiency oil removal device according to claim 1, characterized in that: The reaction shell further includes a third side wall and a fourth side wall arranged opposite to each other, first, third, and fifth blocking components, and second, fourth, and sixth blocking components, wherein the first, third, and fifth blocking components are arranged on the fourth side wall and do not contact the third side wall, and the second, fourth, and sixth blocking components are arranged on the third side wall and do not contact the fourth side wall, so as to form a fluid channel from the feed port to the discharge port.

3. The high-efficiency oil removal device according to claim 2, characterized in that: The heated aeration zone includes: a heating device, the heating device being disposed on the third side wall between the feed port and the first blocking member, and being configured to heat the fluid entering from the feed port; An aeration device is provided on the feed port side and the fourth side wall, and is used to generate bubbles adsorbed on the surface of oil droplets in the fluid to accelerate the floating and aggregation of the oil droplets.

4. The high-efficiency oil removal device according to claim 3, characterized in that: The aeration device is a micro-nano bubble generator, which generates bubbles with a diameter of 20-40 μm.

5. The high-efficiency oil removal device according to claim 3, characterized in that: The heating device is an electric heating device, which heats the temperature of the fluid to 40-60°C.

6. The high-efficiency oil removal device according to claim 2, characterized in that: The oil scraping area includes: an oil scraping device, which includes an oil scraping plate and a motor electrically connected to the oil scraping plate. The oil scraping plate is arranged on the third side wall to scrape off the oil layer on the fluid when the fluid flows through.

7. The high-efficiency oil removal device according to claim 2, characterized in that: The membrane filtration area includes a hydrophilic oleophobic membrane, which is arranged between the second, fourth, and sixth blocking components and the fourth side wall, and is used to further filter residual tiny oil droplets when the fluid flows through.

8. The high-efficiency oil removal device according to claim 7, characterized in that: The hydrophilic oleophobic membrane has a pore size of 60-80 μm, a thickness of 1.0 mm, and an air flux of 1700 L / (m 2 ·s) non-woven fabric.

9. The high-efficiency oil removal device according to claim 2, characterized in that: The rear side of the second blocking component can be arranged in pairs, with blocking components respectively located on the third side wall and the fourth side wall to increase the length of the fluid channel.

10. The high-efficiency oil removal device according to claim 1, characterized in that: Also includes: The post-oil removal collection area is located in an area close to the discharge port.

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