Method for removing metal impurities from a carbonylation synthesis acetic acid catalyst solution and filtration equipment therefor

Abstract

The application provides a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and a filtering device thereof, and belongs to the technical field of removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution. The method comprises the following steps: S1, preliminarily adsorbing heavy metal ion impurities through a strong acid ion exchange resin; S2, then performing cyclic filtering adsorption through a filtering assembly, and guiding the adsorbed carbonylation synthesis acetic acid catalyst solution into a cooling chamber; and S3, pouring clean water into a processing barrel, and centrally adsorbing and processing the cleaned water mixture through a magnetic adsorption rod. The cleaning assembly is arranged to realize the cleaning effect of the inner and outer surfaces of the metal filter plate, the filtering assembly does not need to be separately disassembled and cleaned, the cleaning effect of the residual heavy metal ion impurities is further improved, and the cleaning efficiency of the filtering assembly is improved.

Description

Technical Field

[0001] This invention relates to the field of metal impurity ion removal technology in carbonylation synthesis acetic acid catalyst solutions, and particularly to a method for removing metal impurity ions from carbonylation synthesis acetic acid catalyst solutions and its filtration equipment. Background Technology

[0002] In the methanol carbonylation synthesis process, catalyst research is crucial. The aim is to develop novel catalyst systems that combine the advantages of both homogeneous and heterogeneous catalysts, exhibiting high activity, good stability, and ease of recovery. For many years, research has focused on the host metal, ligands, supports, and promoters, with the goal of improving the activity and stability of existing catalysts to increase reaction rates and acetic acid yield. However, in rhodium-based catalytic systems, some catalysts are partially deactivated or precipitated under the influence of metal ions, or gradually transform into other complex forms during production, losing their catalytic activity and ceasing to act as catalysts. This deactivation, precipitation, and form transformation of the catalytic system, along with the accumulation of other metal ions, complexes, and precipitates, leads to an increase in the concentration of the acetic acid synthesis reaction solution and a gradual deterioration of the reaction environment. This makes it highly susceptible to precipitation and accumulation in equipment pipelines, causing equipment blockage and mechanical seal damage, severely hindering the normal progress of acetic acid synthesis.

[0003] Existing equipment typically removes metal impurity ions from carbonylation synthesis acetic acid catalyst solutions in a single treatment, which is insufficient for complete removal. Furthermore, after removal, the filter needs to be removed for cleaning and maintenance, a cumbersome process that reduces efficiency. Additionally, cleaning the filter separately risks splashing wastewater, causing secondary pollution and resulting in excessively high maintenance costs. Therefore, this application provides a method for removing metal impurity ions from carbonylation synthesis acetic acid catalyst solutions and its corresponding filter to meet these requirements. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a method and filtration device for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution. This addresses the shortcomings of existing methods that rely on single-stage removal of metal impurity ions from the carbonylation synthesis acetic acid catalyst solution, which is insufficient for complete removal. Furthermore, after removing the metal impurity ions, the filtration device needs to be removed for cleaning and maintenance, which is cumbersome and inefficient. Additionally, the wastewater generated during cleaning may splash, causing secondary pollution and resulting in excessively high cleaning and maintenance costs.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, the method comprising the following steps:

[0007] S1. First, the carbonylation synthesis acetic acid catalyst solution is introduced into the filtration equipment. A mixed strong acid ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing tank. The strong acid ion exchange resin is used to preliminarily adsorb heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution.

[0008] S2. Subsequently, the carbonylation synthesis acetic acid catalyst solution after adsorption is circulated and filtered through the filter assembly, and the adsorbed carbonylation synthesis acetic acid catalyst solution is guided to the cooling chamber to cool the carbonylation synthesis acetic acid catalyst solution, and the carbonylation synthesis acetic acid catalyst solution after removing heavy metal ion impurities is collected in a concentrated manner.

[0009] S3. Pour clean water into the processing tank, guide the water through the flow guide component, clean the filter component a second time through the cleaning component, and use the magnetic adsorption rod to centrally adsorb the cleaned water mixture.

[0010] This application also provides another technical solution: a device for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, comprising a processing tank, an air inlet installed through one side of the top surface of the processing tank, a liquid inlet installed on the other side of the top surface of the processing tank, a water inlet installed through the center of the top surface of the processing tank, a resin replenishment port installed on one side of the processing tank, a control module installed on one side of the middle surface of the processing tank, a cleaning door installed on the other side of the processing tank, a three-way pump installed on the other side of the surface of the processing tank, a cooling chamber provided inside the cavity of the processing tank, and a valve installed through the top of the cooling chamber. The cooling chamber is equipped with condenser tubes installed on its inner wall. A ball valve is installed through the bottom of the cooling chamber. A drain valve is installed on one side of the bottom of the cooling chamber's inner wall. Multiple sets of magnetic adsorption rods are threaded to the bottom of the processing barrel. A filter assembly is installed on the inner wall of the processing barrel. The filter assembly is used to remove metal impurity ions from the solution. A flow guiding assembly is installed at the top of the cooling chamber. The flow guiding assembly is used to guide clean water into the filter assembly. A cleaning assembly is used to clean the filter assembly. The flow guiding assembly is located along the central axis of the filter assembly, and the cleaning assembly is located at the bottom of the flow guiding assembly.

[0011] Optionally, the filter assembly includes a mounting plate, which is installed on the inner wall of the processing barrel. A porous sponge is nested on the surface of the mounting plate, and the number of the porous sponges is set to multiple groups. The multiple groups of porous sponges are arranged in an equiangular circumferential array on the surface of the mounting plate, and an opening is installed through the center of the bottom end of the mounting plate.

[0012] Optionally, the filter assembly further includes a mounting frame, wherein the number of mounting frames is set to multiple sets, all of which are installed on the inner wall of the processing barrel. Ventilation holes are installed through the surface of the mounting frame. A filter membrane is connected to the bottom of the mounting frame, and the filter membrane is made of polyvinyl chloride. A filter barrel is nested on the inner wall of the top of the mounting frame, and the bottom of the filter barrel is connected through to the top of the cooling chamber. A flow guide elbow is installed on the top of the filter barrel, and the flow guide elbow and the porous sponge are arranged vertically on the same central axis. A metal filter plate is fitted on the surface of the filter barrel, and the bottom of the metal filter plate is nested on the top of the cooling chamber. A solenoid valve is installed on the bottom end of the metal filter plate extending out of the cooling chamber. Multiple collars are fitted on the outer surface of the mounting frame, and these collars are interconnected. One end of one collar is fitted with an elastic telescopic rod, the bottom end of which is elastically connected to the inner wall of the processing barrel. A trigger rod is installed on one side of another collar.

[0013] Optionally, the flow guiding assembly includes an air pipe, a limiting frame is fitted on the outer surface of the air pipe, the limiting frame is installed on the inner wall of the processing barrel, through holes are arrayed at the top of the air pipe, an air pump is installed on one side of the air pipe surface, and a trigger ring is installed on the upper surface of the air pipe.

[0014] Optionally, the flow guiding assembly further includes a baffle, which is nested and installed on the inner wall of the opening. A sealing ring is installed on the top of the baffle and contacts the inner wall of the opening. An electric push rod is connected to one end of the baffle and is installed on one side of the bottom end of the mounting plate.

[0015] Optionally, the cleaning assembly includes a motor mounted on the top of the inner wall of the cooling chamber. A screw is connected to the top of the motor, and the bottom of the screw is nested in the inner wall of the cooling chamber at the connection with the top of the motor. A sliding base is threaded onto the top of the screw.

[0016] Optionally, the cleaning assembly further includes a liquid inlet tank, a piston plate that slides within the internal cavity of the liquid inlet tank, the bottom end of the piston plate being connected to the top end of the sliding base, a one-way valve I being installed through one side of the top of the liquid inlet tank, one end of the one-way valve I being connected to a liquid storage tank via a hose, the liquid storage tank being installed on one side of the surface of the processing tank, a one-way valve II being installed at the center of the top of the liquid inlet tank, a liquid inlet chamber being installed at the top of the liquid inlet tank, the top of the liquid inlet chamber being nested and installed at the bottom end of the air pipe, and a sponge column being installed on the inner wall of the liquid inlet chamber.

[0017] Optionally, a support frame is installed on the outer surface of the liquid inlet tank. The top of the support frame is connected to the filter membrane, and an installation sleeve is installed at the bottom of the support frame. A turntable is nested inside the installation sleeve. The number of installation sleeves and turntables is set to multiple sets. A nozzle is installed through the side of the turntable. The number of nozzles is set to multiple sets. The multiple sets of nozzles are arranged in an equal-angle circular array on the side of the turntable.

[0018] Optionally, a guide tube is connected between multiple sets of the turntables. The number of guide tubes is set to multiple sets. Each set of guide tubes is installed between two adjacent sets of guide tubes. Two sets of guide tubes are connected in a continuous manner. One end of another set of guide tubes is equipped with a connecting tube, and the other end of the connecting tube is connected in a continuous manner to the bottom surface of the trachea.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above scheme, by setting up a filtration assembly and using a specially designed porous sponge on the mounting plate, along with the liquid inlet and water inlet at the top of the processing tank, the system can differentiate between the carbonylation synthesis acetic acid catalyst solution and clean water injected into the processing tank. By switching between the injection of the carbonylation synthesis acetic acid catalyst solution and clean water, the system achieves a cycle of removing and cleaning heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution. This ensures effective removal of heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution while extending the service life of the filtration assembly. It also allows for the orderly operation of the two processes: heavy metal ion impurity removal and cleaning / maintenance. Furthermore, by specially arranging the filter tank, metal filter plates, and filter membranes, multiple sets of filter tanks, metal filter plates, and filter membranes are arranged at varying heights. Utilizing the characteristic of fluid flow from high to low, the filtered heavy metal ions are effectively removed. Impurities are trapped at the bottom of multiple filter barrels, metal filter plates, and filter membranes, facilitating subsequent cleaning of the components. Through staged filtration between the filter barrels, metal filter plates, and filter membranes, heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution are removed in stages. Simultaneously, the three-way pump circulates the initially removed carbonylation synthesis acetic acid catalyst solution for further removal. This staged and circulated removal further enhances the removal efficiency. Ventilation holes at the top of the mounting frame depressurize the cavity between the mounting frame and the filter membrane, ensuring the membrane's lifespan. This approach maintains the membrane's effectiveness in removing heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution while reducing the probability of membrane breakage and lowering operating costs.

[0021] By incorporating a flow guiding component, when clean water is injected into the processing tank, an air pump guides the water flow. When clean water is injected into the processing tank to clean the filter components, the water is diverted for reuse. Simultaneously, the coordinated operation of the baffle, sealing ring, and electric push rod switches between different clean water diversion effects. During the cleaning process, adaptive adjustments are made to ensure effective cleaning of the filter components. Furthermore, as the air pump slides upwards, a trigger ring changes the horizontal position of the collar in real time, thus protecting the vent holes on the mounting frame surface. Additionally, the placement of sealing rings prevents leakage of the carbonylation synthesis acetic acid catalyst solution at the openings when the processing tank is injected. To prevent heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution from remaining untreated after leakage, which would affect the removal efficiency of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution, this system ensures the efficient use of clean water through the gas pipe while further guaranteeing the removal efficiency of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution. Simultaneously, the connection between the ball valve and the drain valve allows for the separate discharge of the carbonylation synthesis acetic acid catalyst solution after heavy metal ion impurity removal and the cleaned liquid mixture, preventing interference between the two and improving the compatibility of the equipment in both removing heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution and cleaning residual heavy metal ion impurities.

[0022] By setting up a cleaning component and linking the motor, screw, and sliding base, the cleaning agent in the inlet tank is discharged. Simultaneously, utilizing the porous nature of the sponge, the discharged cleaning agent is absorbed by the sponge columns within the inlet chamber. The air pipe also diverts clean water, transferring the cleaning agent to the clean water as it passes through, thus enhancing the cleaning effect on the bottom surface of the metal filter plate. Furthermore, the liquid exchange between the inlet tank, one-way valve, hose, and storage tank ensures the continuous replenishment of the cleaning agent in the inlet tank. This circulation enhances the sustainability of adding cleaning agent to the clean water using the inlet tank and sponge columns. The sliding effect of the support frame lifts the filter membrane, exposing the bottom surface of the metal filter plate. Simultaneously, the sliding effect of the support frame also adjusts the positions of the turntable and nozzle, creating a cleaning positioning near the bottom surface of the metal filter plate. Finally, the guide pipe and turntable are arranged at varying heights to further enhance the cleaning effect. Multiple sets of filter barrels, metal filter plates, and filter membranes arranged at varying heights work in sync to effectively clean the heavy metal ion impurities trapped at the bottom of these components. A specially designed water outlet path within the rotating disc utilizes the force of water flowing through this path to rotate the disc, further enhancing the cleaning effect of the nozzles on the bottom surface of the metal filter plates. Combined with the air pipe's water diversion function, this achieves cleaning of both the inner and outer surfaces of the metal filter plates, eliminating the need for separate disassembly and cleaning of the filter components. This significantly improves the cleaning efficiency of the filter components while simultaneously enhancing the removal of residual heavy metal ion impurities. Magnetic adsorption rods centrally adsorb and remove the cleaned liquid mixture, preventing secondary pollution from heavy metal ion impurities. Furthermore, operators can disassemble and maintain the magnetic adsorption rods during subsequent maintenance, extending their lifespan and ensuring effective adsorption of heavy metal ion impurities, thus reducing subsequent maintenance and cleaning costs. Attached Figure Description

[0023] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of the filtration equipment;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the filtration equipment;

[0026] Figure 3 This is a schematic diagram of the structure of some components of the filter assembly;

[0027] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0028] Figure 5 A schematic diagram of the mounting plate, porous sponge, and open structure;

[0029] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the filter assembly;

[0030] Figure 7 This is a schematic diagram of the structure of some components of the flow guiding component;

[0031] Figure 8 This is a schematic diagram of the trachea and through-hole structure;

[0032] Figure 9 A schematic diagram of the baffle, sealing ring, and electric push rod structure;

[0033] Figure 10 This is a schematic diagram of the component structure for cleaning up components;

[0034] Figure 11 A schematic diagram of the cross-sectional structure of the cleaned component;

[0035] Figure 12 for Figure 11 A partially enlarged structural diagram;

[0036] Figure 13 A schematic diagram of the linkage structure between the cleaning component and the filtering component;

[0037] Figure 14 A schematic diagram of the supporting frame, mounting sleeve, turntable, and guide tube structure;

[0038] Figure 15 This is a schematic diagram of the mounting sleeve, turntable, and nozzle structure.

[0039] Figure label:

[0040] 1. Processing tank; 2. Air inlet; 3. Liquid inlet; 4. Water inlet; 5. Resin replenishment port; 50. Control module; 6. Cleaning door; 7. Three-way pump; 8. Cooling chamber; 80. Valve; 9. Condenser; 10. Ball valve; 11. Drain valve; 12. Magnetic adsorption rod; 13. Filter assembly; 131. Mounting plate; 132. Porous sponge; 133. Opening; 134. Mounting frame; 135. Vent hole; 136. Filter membrane; 137. Filter tank; 138. Guide elbow; 139. Metal filter plate; 1390. Solenoid valve; 1310. Collar; 1311. Elastic telescopic rod; 1312. Trigger rod; 14. Guide Flow assembly; 141. Air pipe; 142. Limiting bracket; 143. Through hole; 144. Air pump; 145. Trigger ring; 146. Baffle; 147. Sealing ring; 148. Electric push rod; 15. Cleaning assembly; 151. Motor; 152. Screw; 153. Sliding base; 154. Liquid inlet tank; 155. Piston plate; 156. One-way valve one; 157. Hose; 158. Liquid storage tank; 1580. One-way valve two; 159. Liquid inlet chamber; 1510. Sponge column; 1511. Support frame; 1512. Mounting sleeve; 1513. Turntable; 1514. Nozzle; 1515. Guide pipe; 1516. Connecting pipe.

[0041] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0042] The following describes in detail, with reference to the accompanying drawings and specific embodiments, a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and its filtration equipment provided by the present invention. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0043] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0044] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0045] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0046] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0047] like Figures 1 to 15 As shown in the embodiments of the present invention, a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution is provided. The method includes the following steps:

[0048] S1. First, the carbonylation synthesis acetic acid catalyst solution is introduced into the filtration equipment. In the processing tank 1, a mixed strong acid ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution. The strong acid ion exchange resin is used to preliminarily adsorb the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution.

[0049] S2. Subsequently, the carbonylation synthesis acetic acid catalyst solution after adsorption is circulated and filtered through the filter assembly 13, and the adsorbed carbonylation synthesis acetic acid catalyst solution is guided to the cooling chamber 8 to cool the carbonylation synthesis acetic acid catalyst solution, and the carbonylation synthesis acetic acid catalyst solution after removing heavy metal ion impurities is collected in a concentrated manner.

[0050] S3. Pour clean water into the processing tank 1 to clean the ion exchange resin in the processing tank 1, and collect the cleaned ion exchange resin in a concentrated manner. At the same time, the liquid after cleaning the ion exchange resin is circulated and filtered and adsorbed through the filter assembly 13.

[0051] S4. The water solution used to clean the ion exchange resin is recycled through the flow guiding component 14, the filter component 13 is cleaned a second time through the cleaning component 15, and the cleaned water mixture is centrally adsorbed through the magnetic adsorption rod 12.

[0052] This application also provides another technical solution: a device for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, such as... Figures 1 to 15 As shown, the filtration device includes a processing tank 1. An air inlet 2 is installed through one side of the top surface of the processing tank 1, a liquid inlet 3 is installed on the other side of the top surface of the processing tank 1, a water inlet 4 is installed through the center of the top surface of the processing tank 1, a resin replenishment port 5 is installed on one side of the processing tank 1, a control module 50 is installed on one side of the middle surface of the processing tank 1, a cleaning door 6 is installed on the other side of the processing tank 1, a three-way pump 7 is installed on the other side of the surface of the processing tank 1, a cooling chamber 8 is provided inside the cavity of the processing tank 1, a valve 80 is installed through the top of the cooling chamber 8, a condenser pipe 9 is installed on the inner wall of the cooling chamber 8, and a... A ball valve 10 is installed on one side of the bottom of the inner wall of the cooling chamber 8. A series of magnetic adsorption rods 12 are threadedly connected to the bottom of the processing barrel 1. A filter assembly 13 is installed on the inner wall of the processing barrel 1. The filter assembly 13 is used to remove metal impurity ions from the solution. A flow guiding assembly 14 is installed at the top of the cooling chamber 8. The flow guiding assembly 14 is used to guide clean water into the filter assembly 13. A cleaning assembly 15 is used to clean the filter assembly 13. The flow guiding assembly 14 is located in the direction of the central axis of the filter assembly 13, and the cleaning assembly 15 is located at the bottom of the flow guiding assembly 14.

[0053] By setting up the filter assembly 13, the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution are removed in stages. At the same time, the three-way pump 7 is used to circulate and remove the carbonylation synthesis acetic acid catalyst solution after the initial removal. By setting up the staged removal and circulation removal of the carbonylation synthesis acetic acid catalyst solution, the removal effect of the carbonylation synthesis acetic acid catalyst solution is further improved. By setting up the flow guiding assembly 14, the clear water flow effect can be switched. When the cleaning assembly 15 is running, it is adjusted synchronously to ensure the cleaning effect of the filter assembly 13. By setting up the cleaning assembly 15, the heavy metal ion impurities trapped at the bottom of the multiple sets of filter barrels 137, metal filter plates 139 and filter membranes 136 arranged at different heights are cleaned in a focused manner. At the same time, by using the specially designed water outlet passage in the turntable 1513, the force of the water flowing through the passage in the turntable 1513 causes the turntable 1513 to rotate.

[0054] like Figures 3 to 6 As shown, the filter assembly 13 includes a mounting plate 131, which is installed on the inner wall of the processing barrel 1. Multiple sets of porous sponges 132 are nested on the surface of the mounting plate 131 in a circular array at equal angles. An opening 133 is installed through the center of the bottom end of the mounting plate 131. The filter assembly 13 also includes a mounting frame 134, which is also installed in multiple sets on the inner wall of the processing barrel 1. Ventilation holes 135 are installed through the surface of the mounting frame 134. A filter membrane 136 is connected to the bottom end of the mounting frame 134. The filter membrane 136 is made of polyvinyl chloride. A filter barrel 137 is nested on the inner wall of the top end of the mounting frame 134. The bottom of filter barrel 137 is connected to the top of cooling chamber 8. A flow guide elbow 138 is installed at the top of filter barrel 137. The flow guide elbow 138 and porous sponge 132 are arranged vertically on the same central axis. A metal filter plate 139 is sleeved on the surface of filter barrel 137. The bottom of the metal filter plate 139 is nested and installed at the top of cooling chamber 8. A solenoid valve 1390 is installed at the bottom of the part of the metal filter plate 139 that extends out of cooling chamber 8. A collar 1310 is sleeved on the outer surface of mounting frame 134. The number of collars 1310 is set to multiple. The multiple collars 1310 are connected to each other. One end of one collar 1310 is equipped with an elastic telescopic rod 1311. The bottom end of the elastic telescopic rod 1311 is elastically connected to the inner wall of processing barrel 1. A trigger rod 1312 is installed on one side of another collar 1310.

[0055] First, the operator replenishes the carbonylation synthesis acetic acid catalyst solution into the processing tank 1 through the liquid inlet 3. At the same time, a strong acid ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing tank 1 through the resin replenishment port 5. This fills the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1 with a mixture of the carbonylation synthesis acetic acid catalyst solution and the strong acid ion exchange resin. The strong acid ion exchange resin is used to initially remove heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution.

[0056] Subsequently, high-pressure gas is continuously pumped into the space formed by the top of the mounting plate 131 and the inner wall of the processing barrel 1 through the air inlet 2. Under the continuous entry of high-pressure gas, the carbonylation synthesis acetic acid catalyst solution after preliminary removal is squeezed out through the porous sponge 132 at the top of the mounting plate 131 and flows into the guide bend 138. It then enters the internal cavity of the filter barrel 137 through the guide bend 138. First, the carbonylation synthesis acetic acid catalyst solution is filtered through the filter barrel 137. Then, the filtered carbonylation synthesis acetic acid catalyst solution passes through the metal filter plate 139 and the filter membrane 136 in sequence. The carbonylation synthesis acetic acid catalyst solution is filtered in stages by utilizing the staged filtration effect of the filter barrel 137, the metal filter plate 139 and the filter membrane 136. During this process, the cavity between the mounting frame 134 and the filter membrane 136 is depressurized through the vent hole 135 on the surface of the mounting frame 134 to avoid damage to the filter membrane 136.

[0057] After passing through three stages of filtration, the carbonylation synthesis acetic acid catalyst solution enters the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8. Then, the operator starts the three-way pump 7 to re-draw the carbonylation synthesis acetic acid catalyst solution in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8 back into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1. The above steps are repeated to circulate and filter the carbonylation synthesis acetic acid catalyst solution after it is drawn in.

[0058] After the carbonylation synthesis acetic acid catalyst solution completes repeated suction and circulation filtration, the operator activates valve 80 through control module 50 to allow the filtered carbonylation synthesis acetic acid catalyst solution in the space formed by the bottom of mounting plate 131 and the top of cooling chamber 8 to enter cooling chamber 8. The carbonylation synthesis acetic acid catalyst solution is then cooled by condenser tube 9 on the inner wall of cooling chamber 8. After the carbonylation synthesis acetic acid catalyst solution is completely cooled, the operator opens ball valve 10 to collect the carbonylation synthesis acetic acid catalyst solution in cooling chamber 8.

[0059] Subsequently, the operator opens the cleaning door 6 on one side of the processing tank 1 to collect the strong acid ion exchange resin. After the strong acid ion exchange resin is collected, clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1 through the water inlet 4. Similarly, after the clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1, the air inlet 2 continuously pumps high-pressure gas into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1. Under the continuous entry of high-pressure gas, the clean water is squeezed out through the porous sponge 132 at the top of the mounting plate 131 and flows into the guide bend 138. It then enters the internal cavity of the filter tank 137 through the guide bend 138. The filter tank 137, the metal filter plate 139 and the filter membrane 136 are cleaned in stages by the clean water. At the same time, the clean water is discharged through the filter membrane 136 after cleaning and is concentrated in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8. It then enters the cooling chamber 8 through the valve 80.

[0060] At the same time, the control module 50 controls the solenoid valve 1390 to start, so that the clean water that enters between the filter barrel 137 and the metal filter plate 139 enters the cooling chamber 8 through the solenoid valve 1390, and then enters the bottom chamber of the cooling chamber 8 through the drain valve 11 at the bottom of the inner wall of the cooling chamber 8.

[0061] By specially designing a porous sponge 132 on the mounting plate 131, and cooperating with the liquid inlet 3 and water inlet 4 at the top of the processing tank 1, the carbonylation synthesis acetic acid catalyst solution and clean water injected into the processing tank 1 can be functionally separated. At the same time, by specially arranging the filter tank 137, metal filter plate 139 and filter membrane 136, multiple sets of filter tanks 137, metal filter plates 139 and filter membranes 136 are arranged in a high-low sequence. Taking advantage of the characteristics of fluid flowing from high to low, the heavy metal ion impurities filtered out are trapped at the bottom of the multiple sets of filter tanks 137, metal filter plates 139 and filter membranes 136, which is convenient for subsequent cleaning by the cleaning component 15. At the same time, a vent hole 135 is set at the top of the mounting frame 134 to depressurize the cavity between the mounting frame 134 and the filter membrane 136, ensuring the service life of the filter membrane 136.

[0062] like Figures 7 to 9As shown, the flow guiding assembly 14 includes an air pipe 141, a limiting frame 142 is fitted on the outer surface of the air pipe 141, the limiting frame 142 is installed on the inner wall of the processing barrel 1, through holes 143 are arrayed at the top of the air pipe 141, an air pump 144 is installed on one side of the surface of the air pipe 141, a trigger ring 145 is installed on the upper surface of the air pipe 141, the flow guiding assembly 14 also includes a baffle 146, the baffle 146 is nested in the inner wall of the opening 133, a sealing ring 147 is installed at the top of the baffle 146, the sealing ring 147 is in contact with the inner wall of the opening 133, one end of the baffle 146 is connected to an electric push rod 148, the electric push rod 148 is installed on one side of the bottom end of the mounting plate 131.

[0063] As the air tube 141 slides upward, it continues to slide under the action of the limiting bracket 142. Simultaneously, the air tube 141 moves the top through hole 143 closer to and contacts the bottom of the baffle 146. When the top of the air tube 141 contacts the bottom of the baffle 146, the control module 50 controls the electric push rod 148 to start. After the electric push rod 148 starts, it drives the baffle 146 and the sealing ring 147 to slide, causing the sealing ring 147 to disengage from the inner wall of the opening 133. When the sliding base 153 slides into place, the air tube 141... The side surface of the top end contacts the inner wall of the opening 133, forming a passage between the space formed by the top end of the mounting plate 131 and the inner wall of the processing barrel 1 and the air pipe 141. Then, the control module 50 controls the air pump 144 to start. The air pump 144 draws water from the cavity inside the air pipe 141, drawing the clean water in the space formed by the top end of the mounting plate 131 and the inner wall of the processing barrel 1 to the air pump 144. Under the action of gravity and the suction of the air pump 144, the clean water enters the air pipe 141 and reaches the bottom of the air pipe 141.

[0064] As the air tube 141 slides, it drives the trigger ring 145 on the surface to slide upward synchronously. As the trigger ring 145 slides, it contacts and pushes the trigger rod 1312, causing the trigger rod 1312 to drive multiple interconnected collars 1310 to slide upward synchronously. As the collars 1310 slide, they drive the elastic telescopic rod 1311 to retract. As the collars 1310 slide, they adhere to the surface of the mounting frame 134. When the air tube 141 slides into place, the air tube 141 drives the collars 1310 to slide into place synchronously, blocking the vent hole 135 on the surface of the mounting frame 134, thus achieving the protection effect of the vent hole 135.

[0065] As the trachea 141 slides downward, the side surface of the top of the trachea 141 disengages from the inner wall of the opening 133. Subsequently, the control module 50 controls the electric push rod 148 to start. The electric push rod 148 pushes the baffle 146 and the sealing ring 147 to slide back and reset, so that the sealing ring 147 re-contacts and seals with the inner wall of the opening 133. As the trachea 141 slides downward, the trigger ring 145 on the surface slides downward synchronously. As the trigger ring 145 slides, it disengages from the trigger rod 1312, so that the elastic telescopic rod 1311 is unloaded and extends. As the elastic telescopic rod 1311 extends, it drives multiple interconnected collars 1310 to slide downward synchronously and reset, thereby completing the removal of heavy metal ion impurities in the carbonyl synthesis acetic acid catalyst solution.

[0066] By setting up an air pipe 141 and an air pump 144, when clean water is injected into the processing tank 1, the air pump 144 guides the clean water flow. When clean water is injected into the processing tank 1 to clean the filter component 13, the clean water is diverted for use. At the same time, the switching of the clean water diversion effect is realized through the coordinated linkage between the baffle 146, the sealing ring 147 and the electric push rod 148.

[0067] like Figures 10 to 15As shown, the cleaning assembly 15 includes a motor 151, which is mounted on the top of the inner wall of the cooling chamber 8. A screw 152 is connected to the top of the motor 151, and the bottom of the screw 152 is nested in the inner wall of the cooling chamber 8. A sliding base 153 is threaded onto the top of the screw 152. The cleaning assembly 15 also includes a liquid inlet tank 154, in which a piston plate 155 is slidably fitted. The bottom end of the piston plate 155 is connected to the sliding base. The top of the inlet tank 154 is connected to the top of the inlet tank 153. A one-way valve 156 is installed through one side of the top of the inlet tank 154. One end of the one-way valve 156 is connected to the storage tank 158 through the hose 157. The storage tank 158 is installed on one side of the surface of the processing tank 1. A one-way valve 1580 is installed at the center of the top of the inlet tank 154. An inlet chamber 159 is installed at the top of the inlet tank 154. The top of the inlet chamber 159 is nested at the bottom of the air pipe 141. A sponge column 1510 is installed on the inner wall of the inlet chamber 159. A support frame 1511 is mounted on the outer surface of the filter membrane 136. The top of the support frame 1511 is connected to the filter membrane 136. An installation sleeve 1512 is mounted on the bottom of the support frame 1511. A turntable 1513 is nested inside the installation sleeve 1512. Multiple sets of installation sleeves 1512 and turntables 1513 are provided. Multiple sets of nozzles 1514 are installed through the side of the turntable 1513. The multiple sets of nozzles 1514 are arranged in equal-angle circles on the side of the turntable 1513. The array is arranged such that multiple sets of turntables 1513 are connected by guide tubes 1515. The number of guide tubes 1515 is set to multiple sets, and each set of guide tubes 1515 is installed between two adjacent sets of guide tubes 1515. Two sets of guide tubes 1515 are connected to each other. One end of another set of guide tubes 1515 is equipped with a connecting tube 1516, and the other end of the connecting tube 1516 is connected to the bottom surface of the air pipe 141.

[0068] Simultaneously, the operator starts the motor 151 via the control module 50. After the motor 151 starts, it drives the screw 152 to rotate synchronously. Under the rotation of the screw 152, the sliding base 153, which is threaded onto the surface of the screw 152, slides upward along the direction of the screw 152. While the screw 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and squeezes inside the cavity of the liquid inlet tank 154. Under the continuous squeezing action of the piston plate 155, the cleaning agent stored in the liquid inlet tank 154 is squeezed into the liquid inlet chamber 159 through the one-way valve 1580. Utilizing the porous characteristics of the sponge, the cleaning agent is absorbed by the sponge column 1510, so that the surface of the sponge column 1510 is filled with cleaning agent. When the piston plate 155 is squeezed into place, under the rotation of the screw 152, the sliding base 153 drives the piston plate 155 and the liquid inlet tank 154 to continue sliding, and pushes the liquid inlet chamber 159 and the air pipe 141 to continue sliding upward.

[0069] The sliding base 153 drives the liquid inlet tank 154 to slide while simultaneously driving the support frame 1511 to slide upwards. The support frame 1511 slides while simultaneously driving the bottom end of the filter membrane 136 to slide. The inner wall of the bottom end of the filter membrane 136 slides while contacting the surface of the metal filter plate 139. The support frame 1511 slides while simultaneously driving the mounting sleeve 1512 and the turntable 1513 to slide, so that the nozzle 1514 on the side of the turntable 1513 is aligned with the bottom surface of the metal filter plate 139.

[0070] After entering the air pipe 141, clean water continuously enters the guide pipe 1515 through the connecting pipe 1516. During this process, when the clean water passes through the sponge column 1510, the sponge column 1510 mixes the clean water with cleaning agent. After passing through the guide pipe 1515, the clean water enters the turntable 1513. Under the continuous action of the clean water, the internal structure of the turntable 1513 is specially designed as a curved channel. The force of the clean water passing through the curved channel in the turntable 1513 causes the turntable 1513 to rotate within the mounting sleeve 1512. At the same time, the clean water is sprayed out sequentially through the nozzles 1514 on the side of the turntable 1513 to clean the bottom surface of the metal filter plate 139.

[0071] After the clean water is collected and enters the bottom chamber of the cooling chamber 8, multiple sets of magnetic adsorption rods 12 adsorb the liquid mixture in the bottom chamber of the cooling chamber 8, and perform secondary treatment on the residual heavy metal ion impurities in the cleaned liquid mixture. At the same time, during routine maintenance, the operators can remove the multiple sets of magnetic adsorption rods 12 for cleaning and maintenance, extending the service life of the multiple sets of magnetic adsorption rods 12. After the secondary adsorption treatment of the cleaned liquid mixture, the cleaned liquid mixture is collected and discharged through the drain port on one side of the processing tank 1 to avoid secondary pollution.

[0072] Simultaneously, the control module 50 starts the motor 151 again. After the motor 151 starts, it drives the screw 152 to rotate synchronously in the opposite direction. Under the action of the reverse rotation of the screw 152, the sliding base 153, which is threaded on the surface of the screw 152, slides downward along the direction of the screw 152. While the screw 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and draws in the cavity inside the liquid inlet tank 154. Under the continuous suction action of the piston plate 155, the cleaning agent stored in the liquid storage tank 158 is drawn into the liquid inlet tank 154 through the one-way valve 156 and the hose 157, completing the circulation and replenishment of the cleaning agent in the liquid inlet tank 154. While the sliding base 153 drives the liquid inlet tank 154 to slide, it also drives the support frame 1511 to slide synchronously downward. While the support frame 1511 slides, it also drives the bottom end of the filter membrane 136 to slide and reset synchronously.

[0073] After the piston plate 155 slides down to its position, the reverse rotation of the screw 152 causes the sliding base 153 to drive the piston plate 155 and the liquid inlet tank 154 to continue sliding down, and also causes the liquid inlet chamber 159 and the air pipe 141 to continue sliding down to reset.

[0074] By setting up the linkage between the motor 151, screw 152 and sliding base 153, the cleaning agent in the liquid inlet tank 154 is discharged. At the same time, taking advantage of the porous nature of the sponge, the discharged cleaning agent is adsorbed by the sponge column 1510 in the liquid inlet chamber 159. Simultaneously, the air pipe 141 diverts the clean water, and as the clean water passes through the air pipe 141, the sponge column 1510 transfers the cleaning agent into the clean water, making the clean water carry the cleaning agent and improving the cleaning effect of the clean water on the bottom surface of the metal filter plate 139. At the same time, the sliding effect of the support frame 1511 lifts the filter membrane 136, exposing the bottom surface of the metal filter plate 139 and forming a cleaning positioning near the bottom surface of the metal filter plate 139, improving the cleaning effect of the nozzle 1514 on the bottom surface of the metal filter plate 139.

[0075] The working principle of the technical solution provided by this invention is as follows:

[0076] First, the operator replenishes the carbonylation synthesis acetic acid catalyst solution into the processing tank 1 through the liquid inlet 3. At the same time, a strong acid ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing tank 1 through the resin replenishment port 5. This fills the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1 with a mixture of the carbonylation synthesis acetic acid catalyst solution and the strong acid ion exchange resin. The strong acid ion exchange resin is used to initially remove heavy metal ion impurities from the carbonylation synthesis acetic acid catalyst solution.

[0077] Subsequently, high-pressure gas is continuously pumped into the space formed by the top of the mounting plate 131 and the inner wall of the processing barrel 1 through the air inlet 2. Under the continuous entry of high-pressure gas, the carbonylation synthesis acetic acid catalyst solution after preliminary removal is squeezed out through the porous sponge 132 at the top of the mounting plate 131 and flows into the guide bend 138. It then enters the internal cavity of the filter barrel 137 through the guide bend 138. First, the carbonylation synthesis acetic acid catalyst solution is filtered through the filter barrel 137. Then, the filtered carbonylation synthesis acetic acid catalyst solution passes through the metal filter plate 139 and the filter membrane 136 in sequence. The carbonylation synthesis acetic acid catalyst solution is filtered in stages by utilizing the staged filtration effect of the filter barrel 137, the metal filter plate 139 and the filter membrane 136. During this process, the cavity between the mounting frame 134 and the filter membrane 136 is depressurized through the vent hole 135 on the surface of the mounting frame 134 to avoid damage to the filter membrane 136.

[0078] The carbonylation synthesis acetic acid catalyst solution, after passing through three-stage filtration, enters the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8. Then, the operator starts the three-way pump 7 to re-draw the carbonylation synthesis acetic acid catalyst solution in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8 back into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1. The above steps are repeated to circulate and filter the carbonylation synthesis acetic acid catalyst solution after it is drawn in.

[0079] After the carbonylation synthesis acetic acid catalyst solution completes repeated suction and filtration, the operator activates valve 80 via control module 50 to allow the filtered carbonylation synthesis acetic acid catalyst solution in the space formed by the bottom of mounting plate 131 and the top of cooling chamber 8 to enter cooling chamber 8. The carbonylation synthesis acetic acid catalyst solution is then cooled by condenser tube 9 on the inner wall of cooling chamber 8. Once the carbonylation synthesis acetic acid catalyst solution is completely cooled, the operator opens ball valve 10 to collect the carbonylation synthesis acetic acid catalyst solution in cooling chamber 8.

[0080] Subsequently, the operator opens the cleaning door 6 on one side of the processing tank 1 to collect the strong acid ion exchange resin. After the strong acid ion exchange resin is collected, clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1 through the water inlet 4. Similarly, after the clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1, the air inlet 2 continuously pumps high-pressure gas into the space formed by the top of the mounting plate 131 and the inner wall of the processing tank 1. Under the continuous entry of high-pressure gas, the clean water is squeezed out through the porous sponge 132 at the top of the mounting plate 131 and flows into the guide bend 138. It then enters the internal cavity of the filter tank 137 through the guide bend 138. The filter tank 137, the metal filter plate 139 and the filter membrane 136 are cleaned in stages by the clean water. At the same time, the clean water is discharged through the filter membrane 136 after cleaning and is concentrated in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8. It then enters the cooling chamber 8 through the valve 80.

[0081] At the same time, the control module 50 controls the solenoid valve 1390 to start, so that the clean water that enters between the filter barrel 137 and the metal filter plate 139 enters the cooling chamber 8 through the solenoid valve 1390, and then enters the bottom chamber of the cooling chamber 8 through the drain valve 11 at the bottom of the inner wall of the cooling chamber 8.

[0082] Simultaneously, the operator starts the motor 151 via the control module 50. After the motor 151 starts, it drives the screw 152 to rotate synchronously. Under the rotation of the screw 152, the sliding base 153, which is threaded onto the surface of the screw 152, slides upward along the direction of the screw 152. While the screw 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and squeezes inside the cavity of the liquid inlet tank 154. Under the continuous squeezing action of the piston plate 155, the cleaning agent stored in the liquid inlet tank 154 is squeezed into the liquid inlet chamber 159 through the one-way valve 1580. Utilizing the porous characteristics of the sponge, the cleaning agent is absorbed by the sponge column 1510, so that the surface of the sponge column 1510 is filled with cleaning agent. When the piston plate 155 is squeezed into place, under the rotation of the screw 152, the sliding base 153 drives the piston plate 155 and the liquid inlet tank 154 to continue sliding, and pushes the liquid inlet chamber 159 and the air pipe 141 to continue sliding upward.

[0083] As the air tube 141 slides upward, it continues to slide under the action of the limiting bracket 142. Simultaneously, the air tube 141 moves the top through hole 143 closer to and contacts the bottom of the baffle 146. When the top of the air tube 141 contacts the bottom of the baffle 146, the control module 50 controls the electric push rod 148 to start. After the electric push rod 148 starts, it drives the baffle 146 and the sealing ring 147 to slide, causing the sealing ring 147 to disengage from the inner wall of the opening 133. When the sliding base 153 slides into place, the air tube 141... The side surface of the top end contacts the inner wall of the opening 133, forming a passage between the space formed by the top end of the mounting plate 131 and the inner wall of the processing barrel 1 and the air pipe 141. Then, the control module 50 controls the air pump 144 to start. The air pump 144 draws water from the cavity inside the air pipe 141, drawing the clean water in the space formed by the top end of the mounting plate 131 and the inner wall of the processing barrel 1 to the air pump 144. Under the action of gravity and the suction of the air pump 144, the clean water enters the air pipe 141 and reaches the bottom of the air pipe 141.

[0084] As the air tube 141 slides, it drives the trigger ring 145 on its surface to slide upwards simultaneously. As the trigger ring 145 slides, it contacts and pushes the trigger rod 1312, causing the trigger rod 1312 to drive multiple interconnected collars 1310 to slide upwards simultaneously. As the collars 1310 slide, they drive the elastic telescopic rod 1311 to retract. As the collars 1310 slide, they adhere to the surface of the mounting frame 134. When the air tube 141 slides into place, the air tube 141 drives the collars 1310 to slide into place simultaneously, blocking the vent hole 135 on the surface of the mounting frame 134, thus achieving the effect of protecting the vent hole 135.

[0085] The sliding base 153 drives the liquid inlet tank 154 to slide, and at the same time drives the support frame 1511 to slide upward. The support frame 1511 slides, and at the same time drives the bottom end of the filter membrane 136 to slide. The inner wall of the bottom end of the filter membrane 136 slides and contacts the surface of the metal filter plate 139. The support frame 1511 slides, and at the same time drives the mounting sleeve 1512 and the turntable 1513 to slide, so that the nozzle 1514 on the side of the turntable 1513 is aligned with the bottom end surface of the metal filter plate 139.

[0086] After entering the air pipe 141, clean water continuously enters the guide pipe 1515 through the connecting pipe 1516. During this process, when the clean water passes through the sponge column 1510, the sponge column 1510 mixes the clean water with cleaning agent. After passing through the guide pipe 1515, the clean water enters the turntable 1513. Under the continuous inflow of clean water, the internal structure of the turntable 1513 is specially designed as a curved channel. The force of the clean water passing through the curved channel in the turntable 1513 causes the turntable 1513 to rotate within the mounting sleeve 1512. At the same time, clean water is sprayed out sequentially through the nozzles 1514 on the side of the turntable 1513 to clean the bottom surface of the metal filter plate 139.

[0087] After the clean water is collected and enters the bottom chamber of the cooling chamber 8, multiple sets of magnetic adsorption rods 12 adsorb the liquid mixture in the bottom chamber of the cooling chamber 8, and perform secondary treatment on the residual heavy metal ion impurities in the cleaned liquid mixture. At the same time, during routine maintenance, the operators can remove the multiple sets of magnetic adsorption rods 12 for cleaning and maintenance, extending the service life of the multiple sets of magnetic adsorption rods 12. After the secondary adsorption treatment of the cleaned liquid mixture, the cleaned liquid mixture is collected and discharged through the drain port on one side of the processing tank 1 to avoid secondary pollution.

[0088] Simultaneously, the control module 50 starts the motor 151 again. After the motor 151 starts, it drives the screw 152 to rotate synchronously in the opposite direction. Under the action of the reverse rotation of the screw 152, the sliding base 153, which is threaded on the surface of the screw 152, slides downward along the direction of the screw 152. While the screw 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and draws in the cavity inside the liquid inlet tank 154. Under the continuous suction action of the piston plate 155, the cleaning agent stored in the liquid storage tank 158 is drawn into the liquid inlet tank 154 through the one-way valve 156 and the hose 157, completing the circulation and replenishment of the cleaning agent in the liquid inlet tank 154. While the sliding base 153 drives the liquid inlet tank 154 to slide, it also drives the support frame 1511 to slide synchronously downward. While the support frame 1511 slides, it also drives the bottom end of the filter membrane 136 to slide and reset synchronously.

[0089] After the piston plate 155 slides down to its position, the reverse rotation of the screw 152 causes the sliding base 153 to drive the piston plate 155 and the liquid inlet tank 154 to continue sliding down, and also causes the liquid inlet chamber 159 and the air pipe 141 to continue sliding down to reset.

[0090] As the trachea 141 slides downward, the side surface of the top of the trachea 141 disengages from the inner wall of the opening 133. Subsequently, the control module 50 controls the electric push rod 148 to start. The electric push rod 148 pushes the baffle 146 and the sealing ring 147 to slide back and reset, so that the sealing ring 147 re-contacts and seals with the inner wall of the opening 133. As the trachea 141 slides downward, the trigger ring 145 on the surface slides downward synchronously. As the trigger ring 145 slides, it disengages from the trigger rod 1312, so that the elastic telescopic rod 1311 is unloaded and extends. As the elastic telescopic rod 1311 extends, it drives multiple interconnected collars 1310 to slide downward synchronously and reset, thereby completing the removal of heavy metal ion impurities in the carbonyl synthesis acetic acid catalyst solution.

[0091] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0092] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A filtration device for metal impurity ions in a carbonylation synthesis catalyst solution for acetic acid, characterized in that, The system includes a processing barrel, with an air inlet installed through one side of its top surface, a liquid inlet installed on the other side of its top surface, a water inlet installed through the center of its top surface, a resin replenishment port installed on one side of its side, a control module installed on one side of its middle surface, a cleaning door installed on the other side of its side, a three-way pump installed on the other side of its side surface, a cooling chamber located inside the processing barrel's internal cavity, a valve installed through the top of the cooling chamber, a condenser pipe installed on the inner wall of the cooling chamber, a ball valve installed through the bottom of the cooling chamber, a drain valve installed on one side of the bottom of the inner wall of the cooling chamber, multiple sets of magnetic adsorption rods threaded to the bottom of the processing barrel, a filter assembly installed on the inner wall of the processing barrel for removing metal impurity ions from the solution, a flow guiding assembly installed at the top of the cooling chamber for guiding clean water into the filter assembly, and a cleaning assembly for cleaning the filter assembly. The flow guiding assembly is located along the central axis of the filter assembly, and the cleaning assembly is located at the bottom of the flow guiding assembly. The filter assembly includes a mounting plate, which is installed on the inner wall of the processing barrel. A porous sponge is nested on the surface of the mounting plate. The number of the porous sponges is set to multiple groups, and the multiple groups of porous sponges are arranged in an equiangular circular array on the surface of the mounting plate. An opening is installed through the center of the bottom end of the mounting plate. The filtration assembly also includes an installation frame, with multiple sets of installation frames installed on the inner wall of the processing barrel. Ventilation holes are installed through the surface of each installation frame. A filter membrane, made of polyvinyl chloride, is connected to the bottom of each installation frame. A filter barrel is nested within the inner wall of the top of each installation frame. The bottom of the filter barrel is connected through to the top of the cooling chamber. A flow guide elbow is installed at the top of the filter barrel, and the flow guide elbow and the porous sponge are arranged vertically on the same central axis. A metal filter plate is fitted onto the surface of the filter barrel, with its bottom nested within the top of the cooling chamber. A solenoid valve is installed at the bottom end of the metal filter plate extending out of the cooling chamber. Multiple collars are fitted onto the outer surface of the installation frame, and these collars are interconnected. One end of one collar is fitted with an elastic telescopic rod, the bottom of which is elastically connected to the inner wall of the processing barrel. A trigger rod is installed on one side of another collar. The flow guiding component includes an air pipe, a limiting frame is fitted on the outer surface of the air pipe, the limiting frame is installed on the inner wall of the processing barrel, through holes are arrayed at the top of the air pipe, an air pump is installed on one side of the air pipe surface, and a trigger ring is installed on the upper surface of the air pipe. The flow guiding assembly also includes a baffle, which is nested and installed on the inner wall of the opening. A sealing ring is installed on the top of the baffle and contacts the inner wall of the opening. An electric push rod is connected to one end of the baffle and is installed on one side of the bottom end of the mounting plate. The cleaning assembly includes a motor, which is mounted on the top of the inner wall of the cooling chamber. A screw is connected to the top of the motor, and the bottom of the screw is nested in the inner wall of the cooling chamber. A sliding base is threaded onto the top of the screw. The cleaning assembly also includes a liquid inlet tank, in which a piston plate is slidably fitted within the internal cavity of the liquid inlet tank. The bottom end of the piston plate is connected to the top end of the sliding base. A one-way valve is installed through one side of the top of the liquid inlet tank. One end of the one-way valve is connected to a liquid storage tank via a hose. The liquid storage tank is installed on one side of the surface of the processing tank. A two-way valve is installed at the center of the top of the liquid inlet tank. A liquid inlet chamber is installed at the top of the liquid inlet tank. The top of the liquid inlet chamber is nested and installed at the bottom end of the air pipe. A sponge column is installed on the inner wall of the liquid inlet chamber.

2. The filtration device for metal impurity ions in the carbonylation synthesis acetic acid catalyst solution according to claim 1, characterized in that, A support frame is installed on the outer surface of the liquid inlet tank. The top of the support frame is connected to the filter membrane. An installation sleeve is installed at the bottom of the support frame. A turntable is nested inside the installation sleeve. The number of installation sleeves and turntables is set to multiple sets. A nozzle is installed through the side of the turntable. The number of nozzles is set to multiple sets. The multiple sets of nozzles are arranged in an equal-angle circular array on the side of the turntable.

3. The filtration device for metal impurity ions in the carbonylation synthesis acetic acid catalyst solution according to claim 2, characterized in that, Multiple sets of turntables are connected by a guide tube. The number of guide tubes is set to multiple sets. Each set of guide tubes is installed between two adjacent sets of guide tubes. Two sets of guide tubes are connected to each other. One end of another set of guide tubes is equipped with a connecting tube, and the other end of the connecting tube is connected to the bottom surface of the trachea.

4. A method for removing metal impurity ions from a filtration device used in the carbonylation synthesis acetic acid catalyst solution according to claim 3, characterized in that, The method includes the following steps: S1. First, the carbonylation synthesis acetic acid catalyst solution is introduced into the filtration equipment. A mixed strong acid ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing tank. The strong acid ion exchange resin is used to preliminarily adsorb heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution. S2. Subsequently, the carbonylation synthesis acetic acid catalyst solution after adsorption is circulated and filtered through the filter assembly, and the adsorbed carbonylation synthesis acetic acid catalyst solution is guided to the cooling chamber to cool the carbonylation synthesis acetic acid catalyst solution, and the carbonylation synthesis acetic acid catalyst solution after removing heavy metal ion impurities is collected in a concentrated manner. S3. Pour clean water into the processing tank, guide the water through the flow guide component, clean the filter component a second time through the cleaning component, and use the magnetic adsorption rod to centrally adsorb the cleaned water mixture.

Images