A new solvent oil purification device

Abstract

The utility model discloses a chemical equipment technical field's novel solvent oil purification device, include: membrane shell, feed pump is located one side at membrane shell for pumping into the membrane shell with the solvent oil to be purified, ceramic membrane subassembly is located the inside of membrane shell, including distributor and the ceramic filter element of multiple fixedly located the bottom of distributor, wherein, the distributor is hollow cylinder structure, for even distribution of the solvent oil to be purified in each ceramic filter element, the top of distributor is equipped with a plurality of conical flow guide cavities, and the inner wall of flow guide cavity is equipped with the gas injection structure for introducing gas, to form microbubble when solvent oil flows, and the bottom of distributor is equipped with a plurality of and ceramic filter element one to one corresponding liquid outlet hole. The distributor of the device integrates gas injection, additive injection, prefiltering and uniform distribution and a variety of functions, and the structure is compact, improves the filtering effect and rate of subsequent ceramic filter element.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a novel solvent oil purification device. Background Technology

[0002] In the processing and production of aluminum silver paste, strict control is exercised over the content of additives, impurities, and fine aluminum paste particles in the solvent oil circulating in the system, as these directly affect the quality of the final product. Therefore, the solvent oil circulating in the system is frequently purified before reuse to ensure its cleanliness.

[0003] Currently, the industry commonly uses distillation to regenerate solvent oil. Solvent oil passes through distillation equipment to obtain solvent oil vapor, which is then condensed to obtain purified solvent oil. However, the distillation process typically operates under high temperature and pressure conditions, posing significant safety risks, and the high temperature can easily cause some components in the solvent oil to pyrolyze. To overcome the shortcomings of distillation, membrane filtration technology is generally used to replace the traditional distillation process.

[0004] However, due to the high surface activity of the fine aluminum paste particles in the solvent oil, existing membrane filtration equipment is prone to agglomeration or deposition on the membrane surface during the filtration process, resulting in poor filtration efficiency. In order to improve the throughput, existing devices are usually configured with multiple filter elements operating in parallel. However, due to the lack of an effective flow distribution structure, there is a flow deviation when the solvent oil enters each filter element, which leads to a decrease in overall filtration performance.

[0005] To address these issues, a novel solvent oil purification device is provided. Utility Model Content

[0006] The purpose of this invention is to provide a novel solvent oil purification device that solves the problem of impurity agglomeration in existing purification devices, which affects the filtration effect and reduces the filtration rate.

[0007] This utility model achieves the above objectives through the following technical solutions: A novel solvent oil purification device includes: Membrane shell; A feed pump, located on one side of the membrane housing, is used to pump the solvent oil to be purified into the membrane housing. A ceramic membrane assembly, disposed inside the membrane housing, includes a distributor and multiple ceramic filter elements fixed at the bottom of the distributor; The distributor has a hollow cylindrical structure for uniformly distributing the solvent oil to be purified into each ceramic filter element. The top of the distributor is provided with multiple conical guide cavities, and the inner wall of the guide cavities is provided with an air injection structure for introducing gas to form microbubbles when the solvent oil flows through. The bottom of the distributor is provided with multiple liquid outlet holes corresponding to the ceramic filter elements.

[0008] As a further optimization of this utility model, the top of the membrane shell is provided with an inlet pipe, the bottom is provided with an impurity discharge pipe, and the lower side is provided with an outlet pipe; the outlet end of the feed pump is fixedly connected to the inlet pipe, and the inlet end is provided with a raw liquid input pipe.

[0009] As a further optimization of this utility model, the gas injection structure includes at least one ring of gas injection holes arranged circumferentially on the inner wall of the flow guide cavity, a first annular cavity disposed on the periphery of the flow guide cavity and corresponding to the position of the gas injection holes, and a gas injection pipe; the first annular cavity is connected to the gas injection holes, one end of the gas injection pipe is connected to the first annular cavity, and the other end extends to the outer side of the membrane shell.

[0010] As a further optimization of this utility model, the dispenser is provided with a filter screen inside for trapping large particulate impurities.

[0011] As a further optimization of this utility model, the side walls of the distributor and the membrane housing are provided with through holes corresponding to the positions of the filter screen, and the filter screen can be pulled through the through holes and inserted into the distributor; the exposed end of the filter screen is fixedly provided with a handle.

[0012] As a further optimization of this utility model, the inner wall of the flow guiding cavity is also provided with a liquid injection structure for introducing an additive; the liquid injection structure includes at least one ring of injection holes arranged circumferentially on the inner wall of the flow guiding cavity, a second annular cavity disposed on the periphery of the flow guiding cavity and corresponding to the position of the injection holes, and an additive injection tube; the injection holes are located above the gas injection holes, the second annular cavity is connected to the injection holes, one end of the additive injection tube is connected to the second annular cavity, and the other end extends to the outer side of the membrane shell.

[0013] The beneficial effects of this utility model are as follows: 1. The distributor of this utility model integrates multiple functions such as gas injection, additive injection, pre-filtration and uniform distribution. It has a compact structure. The guide cavity not only serves as a gas-liquid mixing reaction zone, but also has the functions of fluid guidance and preliminary distribution. It effectively guides the solvent oil to flow smoothly downward. Combined with the liquid outlet, it can ensure that the solvent oil is evenly distributed into each ceramic filter element.

[0014] 2. This utility model uses an air injection structure to form microbubbles when solvent oil flows through it. The microbubbles enter the interior of the ceramic filter element with the solvent oil and continuously disturb the inner wall of the ceramic filter element during their ascent. This effectively inhibits the deposition and accumulation of particles such as aluminum slurry on the membrane surface, extends the service life of the ceramic filter element, and reduces the cleaning frequency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the internal structure of the membrane shell of this utility model; Figure 3 This is a schematic diagram of the exploded structure of the ceramic membrane module of this utility model; Figure 4 This is a cross-sectional view of the dispenser structure of this utility model; Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of a local part of the structure.

[0016] In the picture: 1. Membrane housing; 101. Inlet pipe; 102. Impurity discharge pipe; 103. Outlet pipe; 2. Feed pump; 201. Raw material input pipe; 3. Distributor; 301. Guide chamber; 301a. Air injection port; 301b. First annular chamber; 301c. Gas injection pipe; 301d. Liquid injection port; 301e. Second annular chamber; 301f. Additive injection pipe; 302. Filter screen; 302a. Handle; 303. Outlet; 4. Ceramic filter element. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1 To address the issue of impurity aggregation in existing purification devices, which affects filtration efficiency and reduces filtration rate, please refer to [link / reference]. Figures 1-4 This utility model provides a novel solvent oil purification device, comprising: Membrane housing 1, with an inlet pipe 101 at the top, an impurity discharge pipe 102 at the bottom, and an outlet pipe 103 at the lower side. Feed pump 2 is located on one side of membrane housing 1 and is used to pump the solvent oil to be purified into membrane housing 1. The outlet end of feed pump 2 is fixedly connected to inlet pipe 101, and the inlet end is provided with raw liquid input pipe 201. The ceramic membrane assembly, located inside the membrane housing 1, includes a distributor 3 and multiple ceramic filter elements 4 fixedly disposed at the bottom of the distributor 3.

[0019] The distributor 3 is a hollow cylindrical structure used to evenly distribute the solvent oil to be purified into each ceramic filter element 4. The top of the distributor 3 is provided with multiple conical guide cavities 301, and the inner wall of the guide cavity 301 is provided with an air injection structure for introducing gas so as to form microbubbles when the solvent oil flows through. The bottom of the distributor 3 is provided with multiple liquid outlet holes 303 corresponding to the ceramic filter elements 4.

[0020] like Figure 5 As shown, the gas injection structure includes at least one ring of gas injection holes 301a arranged circumferentially on the inner wall of the flow guide cavity 301, a first annular cavity 301b located on the periphery of the flow guide cavity 301 and corresponding to the position of the gas injection holes 301a, and a gas injection pipe 301c; the first annular cavity 301b is connected to the gas injection holes 301a, and the arrangement of the first annular cavity 301b can ensure that gas is injected uniformly from multiple gas injection holes 301a; one end of the gas injection pipe 301c is connected to the first annular cavity 301b, and the other end extends to the outside of the membrane shell 1.

[0021] When the gas injection structure is in use, an external gas source (such as nitrogen) enters the first annular cavity 301b through the gas injection pipe 301c, and solvent oil is evenly sprayed in through the circumferentially distributed gas injection holes 301a to form microbubbles. The microbubbles enter the interior of the ceramic filter element 4 with the solvent oil, and continuously disturb the inner wall of the ceramic filter element 4 during the rising process. This breaks up the agglomerates of impurities in the oil (such as aluminum powder and additive particles), effectively inhibits the deposition and accumulation of particles such as aluminum slurry on the membrane surface, improves the dirt removal efficiency of the ceramic filter element 4, extends the service life of the ceramic filter element 4, and reduces the cleaning frequency.

[0022] like Figure 3 As shown, the distributor 3 has a filter screen 302 inside for trapping large particles of impurities. Through holes are provided on the side walls of both the distributor 3 and the membrane housing 1 corresponding to the positions of the filter screen 302. The filter screen 302 can be pulled through the through holes and inserted into the distributor 3. A handle 302a is fixedly provided at the exposed end of the filter screen 302. When the flow resistance of the filter screen 302 increases due to impurity accumulation, it can be directly pulled out from the through holes for cleaning using the handle 302a. After cleaning, it can be reinserted for reuse without disassembling the membrane housing 1 or the distributor 3.

[0023] In use, the solvent oil to be purified enters the feed pump 2 through the raw liquid input pipe 201. After being pressurized by the feed pump 2, it is pumped into the distributor 3 inside the membrane housing 1 through the liquid inlet pipe 101. The solvent oil first passes through the air injection structure to form microbubbles, and then passes through the filter screen 302 inside the distributor 3. The filter screen 302 traps large particulate impurities in the solvent oil to prevent them from entering the ceramic filter element 4 and causing blockage. Finally, it is distributed to the internal flow channels of each ceramic filter element 4 through the liquid outlet hole 303 at the bottom of the distributor 3. Under the action of pressure difference, the solvent oil permeates to the outside through the micropores of the ceramic filter element 4, and small impurities are trapped inside the ceramic filter element 4. The purified solvent oil is discharged through the liquid outlet pipe 103, and the trapped impurities are discharged with a small amount of concentrated liquid through the impurity discharge pipe 102, completing the purification cycle.

[0024] Example 2 Based on Example 1, in order to improve the filtration performance and chemical stability of the solvent oil and prevent the agglomeration or oxidation of metal particles in the solvent oil, such as Figure 5As shown, the inner wall of the flow guiding cavity 301 is also provided with a liquid injection structure for introducing the additive.

[0025] The liquid injection structure includes at least one ring of injection holes 301d arranged circumferentially on the inner wall of the flow guide cavity 301, a second annular cavity 301e located on the periphery of the flow guide cavity 301 and corresponding to the position of the injection holes 301d, and an additive injection tube 301f. The injection holes 301d are located above the gas injection holes 301a. The second annular cavity 301e is connected to the injection holes 301d. The arrangement of the second annular cavity 301e can ensure that the additive is uniformly injected from multiple injection holes 301d. One end of the additive injection tube 301f is connected to the second annular cavity 301e, and the other end extends to the outside of the membrane shell 1.

[0026] Based on process requirements, the liquid injection structure is activated. An external auxiliary agent source (such as a dispersant or antioxidant) enters the second annular cavity 301e through the auxiliary agent injection pipe 301f and is uniformly sprayed into the solvent oil through the circumferentially distributed injection holes 301d. When a dispersant is injected, it can effectively prevent the agglomeration and sedimentation of solid particles, improve the fluidity of the suspension, and thus improve the filtration efficiency of the ceramic filter element 4. When an antioxidant is injected, it inhibits the oxidation and deterioration of the solvent oil during long-term operation and extends the service life of the solvent oil.

[0027] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A novel solvent oil purification device, characterized in that, include: Membrane shell (1); A feed pump (2) is located on one side of the membrane housing (1) and is used to pump the solvent oil to be purified into the membrane housing (1). The ceramic membrane assembly is located inside the membrane housing (1) and includes a distributor (3) and multiple ceramic filter elements (4) fixed at the bottom of the distributor (3). The distributor (3) is a hollow cylindrical structure used to evenly distribute the solvent oil to be purified into each ceramic filter element (4); The top of the distributor (3) is provided with multiple conical guide chambers (301), and the inner wall of the guide chamber (301) is provided with an injection structure for introducing gas so as to form microbubbles when the solvent oil flows through. The bottom of the distributor (3) is provided with multiple liquid outlet holes (303) corresponding one-to-one with the ceramic filter element (4).

2. The novel solvent oil purification device according to claim 1, characterized in that, The membrane shell (1) is provided with an inlet pipe (101) at the top, an impurity discharge pipe (102) at the bottom, and an outlet pipe (103) at the lower side. The outlet end of the feed pump (2) is fixedly connected to the inlet pipe (101), and the inlet end is provided with a raw liquid input pipe (201).

3. The novel solvent oil purification device according to claim 1, characterized in that, The gas injection structure includes at least one gas injection hole (301a) arranged circumferentially on the inner wall of the guide cavity (301), a first annular cavity (301b) located on the periphery of the guide cavity (301) and corresponding to the position of the gas injection hole (301a), and a gas injection pipe (301c). The first annular cavity (301b) is connected to the gas injection port (301a), and one end of the gas injection pipe (301c) is connected to the first annular cavity (301b), while the other end extends to the outside of the membrane shell (1).

4. The novel solvent oil purification device according to claim 1, characterized in that, The distributor (3) is equipped with a filter screen (302) for trapping large particulate impurities.

5. The novel solvent oil purification device according to claim 4, characterized in that, The sidewalls of the distributor (3) and the membrane housing (1) are provided with through holes corresponding to the position of the filter screen (302). The filter screen (302) can be pulled out and inserted into the distributor (3) through the through holes. The exposed end of the filter (302) is fixedly provided with a handle (302a).

6. The novel solvent oil purification device according to claim 3, characterized in that, The inner wall of the flow guide cavity (301) is also provided with a liquid injection structure for introducing the additive; The liquid injection structure includes at least one injection hole (301d) arranged circumferentially on the inner wall of the guide cavity (301), a second annular cavity (301e) located on the periphery of the guide cavity (301) and corresponding to the position of the injection hole (301d), and an additive injection tube (301f). The injection hole (301d) is located above the gas injection hole (301a), the second annular cavity (301e) is connected to the injection hole (301d), one end of the additive injection tube (301f) is connected to the second annular cavity (301e), and the other end extends to the outside of the membrane shell (1).

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