Potassium clavulanate activated carbon filtering device

Abstract

The utility model discloses a potassium clavulanate activated carbon filtering device. The device comprises a dissolving liquid tank, a feed liquid delivery pump, a rotary ceramic membrane, a cooler and a crystallizing tank which are sequentially connected through pipelines, a feeding valve is arranged on the pipeline between the feed liquid delivery pump and an inlet of the rotary ceramic membrane, a discharging valve is arranged on the pipeline between an outlet of the rotary ceramic membrane and the cooler, and the crystallizing tank is connected with the feeding valve. The outlet of the rotary ceramic membrane is also connected to the dissolving liquid tank through a reflux pipeline; and a reflux valve is arranged on the reflux pipeline. The device can be used for filtering active carbon in the potassium clavulanate organic solvent, and has the advantages of good filtering effect, simplicity in operation and easiness in cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a potassium clavulanate activated carbon filtering device. Background Art

[0002] Potassium clavulanate activated carbon filtration device refers to the activated carbon filtration device used in the production process of potassium clavulanate, which is used to separate the activated carbon from the organic solvent in potassium clavulanate to obtain high-quality products.

[0003] In the prior art, ordinary stacked carbon filters usually require cleaning of the filter and replacement of the filter cloth after use. Strict installation requirements are placed on the filter cloth before use. Once an installation error occurs, there is a risk of carbon leakage; activated carbon powder pollutes the on-site environment; and the cost of replacing the filter cloth is expensive.

[0004] Existing stacked carbon filters have low filtration efficiency and leave a large amount of residual liquid after use. Failure to clean these filters will affect subsequent filtration. Furthermore, since the filter cloth cannot be cleaned online, manual cleaning is required, resulting in low efficiency and poor cleaning results. Furthermore, the filter cloth must be replaced, and strict installation requirements are in place before use. Any installation errors can lead to carbon leakage. The activated carbon can pollute the on-site environment, and filter cloth replacement is expensive. Therefore, a new potassium clavulanate activated carbon filtration device is needed to meet production needs. Summary of the Invention

[0005] Based on this, according to one embodiment of the present invention, its purpose is to provide a potassium clavulanate activated carbon filter device to solve the problem of activated carbon filter in organic solvent during the production process of potassium clavulanate in the prior art, which is affected by the production process and operating environment.

[0006] The above purpose can be achieved by implementing the following technical solutions:

[0007] According to one aspect of the present invention, the present invention provides a potassium clavulanate activated carbon filtration device, comprising a dissolving liquid tank, a liquid delivery pump, a rotating ceramic membrane, a cooler and a crystallization tank connected in sequence through pipelines, wherein a feed valve is provided on the pipeline between the liquid delivery pump and the inlet of the rotating ceramic membrane, a discharge valve is provided on the pipeline between the outlet of the rotating ceramic membrane and the cooler, and the outlet of the rotating ceramic membrane is also connected to the dissolving liquid tank through a reflux pipeline, and a reflux valve is provided on the reflux pipeline.

[0008] Optionally, the rotating ceramic membrane has a backwash pipeline for backwashing the rotating ceramic membrane. Further optionally, the backwash pipeline includes: a washing liquid tank and a heater connected to the outlet of the washing liquid tank, the outlet of the heater is connected to the backwash inlet of the rotating ceramic membrane via a pipeline, and the backwash outlet of the rotating ceramic membrane is connected to the washing liquid tank.

[0009] Optionally, the washing liquid tank is also connected to the dissolving liquid tank so that the used washing liquid is sent to the dissolving liquid tank as the dissolving liquid for recycling.

[0010] Optionally, the heater is a spirally wound tube type.

[0011] Optionally, the coolers all adopt a spirally wound tube type.

[0012] Optionally, the heater and cooler both adopt a spirally wound tube design.

[0013] Optionally, a turbidity meter is provided on the pipeline before the discharge valve to detect whether the filtrate meets the standards. Further, optionally, the turbidity meter is an online turbidity meter, model: JC-TSS-A, with a measuring range of 0-10000 NTU.

[0014] Optionally, a sight glass is provided on the outlet pipeline of the rotating ceramic membrane for observing the material in the pipeline.

[0015] Optionally, the liquid delivery pump is a CQW40-60 magnetic vortex pump with a lift of 30m.

[0016] Optionally, the total membrane area of ​​the rotating ceramic membrane is not less than 40m 2 , the filtration accuracy is not less than 0.2μm.

[0017] Optionally, the rotating ceramic membrane includes: a container, a hollow membrane tube located in the container and a ceramic membrane disk installed on the hollow membrane tube, and a motor connected to the hollow membrane tube and located outside the container; wherein, the inlet of the rotating ceramic membrane is arranged on the container; the ceramic membrane disk includes a plurality of ceramic membrane discs, each of which has a guide groove inside, and the surface of the ceramic membrane disc is coated with a membrane layer and has membrane holes. During filtration, the activated carbon is retained outside the membrane hole, and the liquid phase enters the guide groove through the membrane hole; the guide groove is connected to the outlet of the rotating ceramic membrane.

[0018] Optionally, the ceramic membrane disc is made of AKN-20 ceramic material produced by Harbin Okonor Company.

[0019] Beneficial effect: according to an embodiment of the present invention, by pipeline, dissolving liquid tank, feed liquid delivery pump, rotary ceramic membrane, cooler and crystallizer are connected in sequence, simultaneously at the outlet of rotary ceramic membrane, also by reflux line, feed valve, discharge valve and reflux valve are set on corresponding pipeline, the filtration of activated carbon in potassium clavulanate organic solvent can be completed. During use, the solution in dissolving liquid tank is transported to rotary ceramic membrane through feed liquid delivery pump, filtered by adopting rotary ceramic membrane, during filtration, the ceramic membrane disc in feed liquid and rotary ceramic membrane can rotate at high speed together with the hollow membrane tube, i.e., rotating shaft, using the centrifugal force, hydraulic shear force and the strong turbulence of filtrate generated by rotary motion, ceramic membrane disc can intercept activated carbon material, thus realizing filtering purpose, and liquid phase can enter the guide groove inside ceramic membrane disc through membrane hole, after flowing out after being collected, then enter crystallizer crystallization after being cooled by cooler. The device has good filtering effect, simple operation, can be cleaned online, easy to clean, simple step, does not need the advantage of disassembling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a potassium clavulanate activated carbon filtration device in one embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the connection structure of the rotating ceramic membrane in one embodiment of the present utility model.

[0022] Figure numerals: 1 dissolving liquid tank; 2 liquid delivery pump; 3 rotating ceramic membrane; 4 cooler; 5 crystallization tank; 7 washing liquid tank; 6 heater; 8 turbidity meter; 91 feed valve; 92 discharge valve; 93 reflux valve; 31 filtrate outlet; 32 backwash inlet; 11 cleaning liquid inlet; 12 reflux pipeline. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Figure 1 The structure of the potassium clavulanate activated carbon filtration device in one embodiment of the present invention is schematically shown. The device comprises a dissolving liquid tank 1, a liquid delivery pump 2, a rotating ceramic membrane 3, a cooler 4, and a crystallization tank 5, which are sequentially connected by pipelines.

[0025] like Figure 1 As shown, the dissolving liquid tank 1 is connected to a liquid delivery pump 2, the liquid delivery pump 2 is connected to a rotary ceramic membrane 3, the outlet pipeline of the rotary ceramic membrane 3 is connected to a cooler 4, and the outlet of the cooler 4 is connected to a crystallization tank 5. A feed valve 91 is provided on the pipeline between the liquid delivery pump 2 and the inlet of the rotary ceramic membrane 3. A discharge valve 92 is provided on the pipeline between the outlet of the rotary ceramic membrane 3 and the cooler 4. When in use, the solution in the dissolving liquid tank 1 is delivered to the rotary ceramic membrane 3 via the liquid delivery pump 2, and filtration is completed by the rotary ceramic membrane 3. Specifically, the ceramic membrane disc in the rotary ceramic membrane 3 will intercept the activated carbon substance, thereby realizing activated carbon filtration, and the liquid phase will enter the guide groove inside the ceramic membrane disc through the membrane hole, and then flow out after being collected, and then enter the cooler 4 for cooling, and then enter the crystallization tank 5 for crystallization after cooling.

[0026] In order to make the related equipment and components meet the requirements of using activated carbon for filtration, in this embodiment, the total membrane area of ​​the rotating ceramic membrane 3 is 40m 2 , with a filtration accuracy of 0.2 μm. The feed liquid delivery pump 2 is a CQW40-60 magnetic vortex pump with a head of 30 m. Because potassium clavulanate crystallizes more easily at low temperatures, a cooler 4 is provided before the crystallizer 5 to cool the filtrate before crystallization. In this embodiment, the cooler 4 adopts a spirally wound tubular design to further improve the cooling effect.

[0027] "Rotating ceramic membrane" is also called dynamic cross-flow filtration ceramic membrane. It is a new type of membrane filtration equipment. By making the membrane assembly run dynamically, it can complete membrane filtration while reducing membrane pollution. Structurally speaking, the rotating ceramic membrane is driven by a rotatable hollow shaft. Based on the action of the motor, it drives the membrane fixed on the shaft to rotate at high speed with the shaft. The centrifugal force, hydraulic shear force, and strong turbulence of the filtrate generated by the rotating motion are used to effectively intercept the activated carbon substances. Its continuous and stable filtration time is long; at the same time, it can reduce pollution such as organic matter and can greatly extend the cleaning cycle of the filter membrane; and the system does not need to replace the filter cloth, which greatly saves energy consumption. Furthermore, the rotating ceramic membrane 3 includes: a container, a hollow membrane tube located in the container, and a ceramic membrane disk fixedly mounted on the hollow membrane tube, and a motor connected to the hollow membrane tube and located outside the container. Among them, the inlet of the rotating ceramic membrane 3 is arranged on the container. Reference Figure 2As shown, the ceramic membrane disc includes multiple ceramic membrane discs, and the interior of the ceramic membrane disc has a guide groove, for example, it can be an arc-shaped radial flow channel. The surface of the ceramic membrane disc is coated with a membrane layer and has membrane holes. During filtration, the activated carbon will be retained outside the membrane holes, while the liquid phase (solution and water molecules) will enter the guide groove through the membrane holes; the guide groove is connected to the outlet of the rotating ceramic membrane 3, and the liquid phase is guided and collected by the guide groove and then flows out from the outlet. In this embodiment, the rotating ceramic membrane 3 uses the special ceramic material of the model AKN-20 component of Harbin Okono Company, and the total membrane area is 40m 2 .

[0028] like Figure 1 As shown, the outlet of the rotating ceramic membrane 3 is also connected to the dissolving liquid tank 1 via a reflux line 12, which is provided with a reflux valve 93. After the solution is filtered in the rotating ceramic membrane 3, it returns to the dissolving liquid tank 1 through the reflux line 12 and is then fed into the rotating ceramic membrane 3 by the liquid delivery pump 2 for further filtration, thereby improving the filtration effect.

[0029] Further, if Figure 1 As shown, a turbidity meter 8 is also provided on the pipeline before the discharge valve 92 to detect whether the filtrate meets the standards. If so, the reflux valve 93 is closed and the discharge valve 92 is opened. The filtered filtrate is cooled by the cooler 4 and then enters the crystallizer 5 for crystallization. Specifically, in this embodiment, the turbidity meter 8 is an online turbidity meter, model: JC-TSS-A, with a measurement range of 0-10000 NTU. The detection principle of this online turbidity meter is: the infrared light sent by the transmitter on the sensor is absorbed, reflected and scattered by the object being measured during the transmission process. The received light intensity has a certain relationship with the turbidity of the sewage being measured. Therefore, the turbidity of the water quality can be calculated by measuring the intensity of the transmitted light or scattered light.

[0030] In addition, a sight glass can be provided on the pipeline at the outlet of the rotating ceramic membrane 3 and before the turbidity meter 8. The sight glass can be used to observe the state of the material in the pipeline at any time, such as the flow state, color, transparency, etc. In this embodiment, the filtrate is first observed to see if it is transparent through the sight glass, and then the turbidity meter 8 is used to check whether it meets the standards. If it meets the standards, the next step is carried out.

[0031] In this embodiment, the rotating ceramic membrane 3 also has an online cleaning function, which is easy to clean, with simple steps and no need to disassemble the equipment. The rotating ceramic membrane 3 has a backwashing pipeline, and the backwashing pipeline is connected to the outlet of the rotating ceramic membrane to realize the backwashing operation of the rotating ceramic membrane 3. Furthermore, a heater is also provided on the backwashing pipeline to heat the solution for backwashing, thereby improving the membrane cleaning effect. By providing a heater 6 in the backwashing pipeline, it is easy to dissolve the activated carbon and improve the membrane cleaning effect. In order to enable the relevant equipment and components to meet the requirements for the use of filtered activated carbon and further improve the heating effect, the heater 6 adopts a spirally wound tube design. Figure 1 As shown, the backwash pipeline includes a washing liquid tank 7 and a heater 6 connected to the outlet of the washing liquid tank 7, wherein the outlet of the heater 6 can be connected to the backwash inlet 32 ​​of the rotating ceramic membrane 3 through a pipeline, and the backwash outlet of the rotating ceramic membrane 3 is further connected to the washing liquid tank 7, and the washing liquid after backwashing will return to the washing liquid tank 7. The washing liquid tank 7 is also connected to the dissolving liquid tank 1 (not shown), and after the washing liquid after backwashing returns to the washing liquid tank, the used washing liquid is sent to the dissolving liquid tank 1 as a dissolving liquid for recycling.

[0032] The backwash outlet of the rotating ceramic membrane 3 is located on the container. The backwash inlet 32 ​​is connected to the guide groove inside the rotating ceramic membrane 3, for example, Figure 2 As shown, the backwash inlet 32 ​​is set on the outlet pipeline of the rotating ceramic membrane 3. Furthermore, the backwash inlet 32 ​​and the filtrate outlet 31 can be distributed on both sides of the pipeline. After heating, the washing liquid enters the guide groove from the backwash inlet 32 ​​to wash the activated carbon outside the membrane. In addition, Figure 2 As shown, a cleaning liquid inlet 11 can be further provided on the pipeline before the inlet of the liquid delivery pump 2 and connected to a separate cleaning liquid pipeline to clean the rotating ceramic membrane 3 .

[0033] Reference below Figure 1 and Figure 2 The operation process of filtering using the device is described as follows:

[0034] Filtration: The isopropyl alcohol activated carbon solution in the dissolving liquid tank 1 enters the rotating ceramic membrane 3 through the liquid delivery pump 2. After the solution is filtered in the rotating ceramic membrane 3, it flows back to the dissolving liquid tank 1 through the reflux line 12 and is sent into the rotating ceramic membrane 3 through the liquid delivery pump 2 for re-filtration to improve the filtering effect; the color of the filtered filtrate is observed to be transparent through the sight glass at the outlet of the rotating ceramic membrane 3. After the turbidity meter 8 detects and meets the relevant requirements, the reflux valve 93 is closed and the discharge valve 92 is opened to allow the liquid to enter the cooler 4 for cooling to facilitate subsequent crystallization. The cooled filtrate then flows into the crystallization tank 5 for crystallization.

[0035] The filtration principle is as follows: the dissolved liquid enters the rotating ceramic membrane 3. Since the molecular diameter and viscosity of the isopropyl alcohol liquid are relatively smaller than those of the activated carbon, the isopropyl alcohol liquid phase will pass through the membrane pores and enter the arc-shaped radial flow channel inside the ceramic membrane disc under the action of the motor driving the ceramic membrane disc to rotate and the transmembrane pressure, and finally converge and flow out to achieve filtration separation.

[0036] Backwashing: After each batch of filtration, backwashing is performed using the isopropyl alcohol solution in washing tank 7. The washing solution in washing tank 7 is first heated by heater 6, where isopropyl alcohol is added to 30-40 degrees Celsius to dissolve the activated carbon and clean the membrane, achieving better cleaning results. The heated washing solution then enters the rotating ceramic membrane 3 for backwashing, flushing any remaining activated carbon out of the ceramic membrane and into washing tank 7 through the backwash outlet. Furthermore, the used washing solution can be transferred to dissolving tank 1 and used as dissolving liquid, achieving secondary recycling and zero emissions.

[0037] The description of the present invention is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A potassium clavulanate activated carbon filter device, characterized in that: It includes a dissolving liquid tank, a liquid delivery pump, a rotating ceramic membrane, a cooler and a crystallization tank which are connected in sequence through pipelines, wherein a feed valve is provided on the pipeline between the liquid delivery pump and the inlet of the rotating ceramic membrane, a discharge valve is provided on the pipeline between the outlet of the rotating ceramic membrane and the cooler, and the outlet of the rotating ceramic membrane is also connected to the dissolving liquid tank through a reflux pipeline, and a reflux valve is provided on the reflux pipeline.

2. The potassium clavulanate activated carbon filter device according to claim 1, wherein The rotating ceramic membrane has a backwash pipeline for backwashing the rotating ceramic membrane; The backwash pipeline includes a washing liquid tank and a heater connected to the outlet of the washing liquid tank. The outlet of the heater is connected to the backwash inlet of the rotating ceramic membrane through a pipeline. The backwash outlet of the rotating ceramic membrane is connected to the washing liquid tank.

3. The potassium clavulanate activated carbon filter device according to claim 2, wherein The washing liquid tank is also connected to the dissolving liquid tank so that the used washing liquid is sent to the dissolving liquid tank as the dissolving liquid for recycling.

4. The potassium clavulanate activated carbon filtration device according to claim 2, wherein The heater and cooler are both spirally wound tube type.

5. The potassium clavulanate activated carbon filtration device according to claim 1, characterized in that A turbidity meter is also provided on the pipeline before the discharge valve.

6. The potassium clavulanate activated carbon filtration device according to claim 5, characterized in that The turbidity meter is an online turbidity meter, model: JC-TSS-A, measuring range: 0-10000 NTU.

7. The potassium clavulanate activated carbon filtration device according to claim 1, characterized in that A sight glass is also provided on the outlet pipeline of the rotating ceramic membrane.

8. The potassium clavulanate activated carbon filtration device according to claim 1, characterized in that The model of the liquid delivery pump is CQW40-60 magnetic vortex pump with a head of 30m; And / or, the total membrane area of ​​the rotating ceramic membrane is not less than 40m2, and the filtration accuracy is not less than 0.2μm.

9. The potassium clavulanate activated carbon filtration device according to claim 1, characterized in that The rotating ceramic membrane comprises: a container, a hollow membrane tube located in the container, a ceramic membrane disc mounted on the hollow membrane tube, and a motor connected to the hollow membrane tube and located outside the container; In which, the inlet of the rotating ceramic membrane is arranged on the container; the ceramic membrane disc includes a plurality of ceramic membrane discs, the interior of the ceramic membrane disc has a guide groove, the surface of the ceramic membrane disc is coated with a membrane layer and has membrane holes. During filtration, the activated carbon is retained outside the membrane holes, and the liquid phase enters the guide groove through the membrane holes; the guide groove is connected to the outlet of the rotating ceramic membrane.

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