Method for removing metal impurity ions in catalyst solution for carbonylation synthesis of acetic acid and filtering equipment thereof

Abstract

The invention provides a method for removing metal impurity ions in a carbonylation synthesis acetic acid catalyst solution and filtering equipment thereof, and belongs to the technical field of metal impurity ion removal in the carbonylation synthesis acetic acid catalyst solution. Comprising the following steps: S1, carrying out preliminary adsorption on heavy metal ion impurities through strong-acid ion exchange resin, S2, carrying out circulating filtration adsorption through a filter assembly, and guiding the adsorbed carbonylation synthesis acetic acid catalyst solution into a cooling chamber, S3, pouring clear water into a processing barrel, and carrying out treatment for 2-3 hours. And the cleaned water-liquid mixture is subjected to centralized adsorption treatment through the magnetic adsorption rod. By arranging the cleaning assembly, the cleaning effect on the inner face and the outer face of the metal filter plate is achieved, the filter assembly does not need to be detached and cleaned independently, the cleaning effect on residual heavy metal ion impurities is further improved, and meanwhile the cleaning efficiency of the filter assembly is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, and particularly relates to a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and a filtering device therefor. Background Art

[0002] In the methanol carbonylation synthesis reaction process route, the research on catalysts is an important content. The aim is to study a new catalyst system with high activity, good stability, easy recovery, and combining the advantages of homogeneous and heterogeneous catalysts. Over the years, the research has mainly focused on the main metal, ligand, carrier, and promoter. The purpose of the research is to improve the activity and stability of the current catalyst, achieve the purpose of increasing the reaction rate and acetic acid yield. In the rhodium-based catalytic system, it is partially inactivated and precipitated under the action of metal ions, or gradually transformed into other forms of complexes during the production process, losing its catalytic activity and no longer playing a catalytic role. The inactivation, precipitation, and transformation of the catalytic system, as well as the accumulation of other metal ions, complexes, and precipitates, cause an increase in the concentration of the acetic acid synthesis reaction solution and a gradual deterioration of the reaction environment. It is very easy to precipitate and accumulate in the equipment pipeline, causing equipment blockage and mechanical seal damage, seriously restricting the normal development of acetic acid synthesis.

[0003] When the existing equipment removes metal impurity ions from the carbonylation synthesis acetic acid catalyst solution, it generally performs a single removal treatment on the metal impurity ions in the carbonylation synthesis acetic acid catalyst solution, and it is difficult to completely remove the metal impurity ions in the carbonylation synthesis acetic acid catalyst solution. At the same time, after removing the metal impurity ions from the carbonylation synthesis acetic acid catalyst solution, it is necessary to take out the filtering device in the equipment for cleaning and maintenance. The steps are cumbersome and affect the cleaning and maintenance efficiency. At the same time, when the filtering device is taken out alone for cleaning, the sewage generated during cleaning may splash, causing secondary pollution of the sewage generated during cleaning, resulting in too high cleaning and maintenance costs. Therefore, the present application provides a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and a filtering device therefor to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and its filtration equipment, so as to solve the problems that the existing method generally performs a single removal treatment on the metal impurity ions in the carbonylation synthesis acetic acid catalyst solution, making it difficult to completely remove the metal impurity ions in the carbonylation synthesis acetic acid catalyst solution. At the same time, after removing the metal impurity ions in the carbonylation synthesis acetic acid catalyst solution, it is necessary to take out the filtration equipment in the device for cleaning and maintenance. The steps are cumbersome and affect the cleaning and maintenance efficiency. At the same time, when the filtration equipment is taken out separately for cleaning, the sewage generated during cleaning may splash, causing secondary pollution of the sewage generated during cleaning, thus resulting in too high cleaning and maintenance costs.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[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, introduce the carbonylation synthesis acetic acid catalyst solution into the filtration equipment, add a mixed strong acidic ion exchange resin to the carbonylation synthesis acetic acid catalyst solution in the processing barrel, and preliminarily adsorb the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution through the strong acidic ion exchange resin;

[0008] S2. Subsequently, circulate and filter and adsorb the adsorbed carbonylation synthesis acetic acid catalyst solution through the filtration component, divert the adsorbed carbonylation synthesis acetic acid catalyst solution into the cooling chamber, cool the carbonylation synthesis acetic acid catalyst solution, and centrally collect the carbonylation synthesis acetic acid catalyst solution after removing the heavy metal ion impurities;

[0009] S3. Pour clean water into the processing barrel, divert and utilize the water liquid through the diversion component, perform secondary cleaning on the filtration component through the cleaning component, and centrally adsorb and process the water liquid mixture after cleaning through the magnetic adsorption rod.

[0010] The present application also provides another technical solution: a device for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, including a processing barrel. One side of the top surface of the processing barrel is penetrated and installed with an air inlet, the other side of the top surface of the processing barrel is installed with a liquid inlet, the center of the top surface of the processing barrel is penetrated and installed with a water inlet, one side of the processing barrel is installed with a resin replenishment port, one side of the middle surface of the processing barrel is installed with a control module, the other side of the processing barrel is installed with a cleaning door, the other surface of the processing barrel is installed with a three-way pump, a cooling chamber is arranged in the inner cavity of the processing barrel, a valve is penetrated and installed at the top of the cooling chamber, a condensing pipe is installed on the inner wall of the cooling chamber, a ball valve is penetrated and installed at the bottom of the cooling chamber, a drain valve is installed on one side of the bottom end of the inner wall of the cooling chamber, a plurality of magnetic adsorption rods and a filtering component are threadedly connected to the bottom of the processing barrel, the filtering component is installed on the inner wall of the processing barrel, the filtering component is used for removing metal impurity ions in the solution, a guiding component is installed at the top of the cooling chamber, the guiding component is used for guiding clear water into the filtering component, a cleaning component is used for cleaning the filtering component, the guiding component is located in the central axis direction of the filtering component, and the cleaning component is located at the bottom of the guiding component.

[0011] Optionally, the filtering component includes a mounting plate, the mounting plate 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 be 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 penetrated and installed at the center of the bottom end of the mounting plate.

[0012] Optionally, the filtering component further includes a mounting frame, the number of the mounting frames is set to be multiple groups, the multiple groups of mounting frames are all installed on the inner wall of the processing barrel, ventilation holes are penetrated and installed on the surface of the mounting frame, a filter membrane is connected to the bottom end of the mounting frame, the material of the filter membrane is set to polyvinyl chloride, a filtering barrel is nested on the inner wall of the top end of the mounting frame, the bottom end of the filtering barrel is connected to the top of the cooling chamber in a penetrating manner, a guiding elbow is installed at the top of the filtering barrel, the guiding elbow and the porous sponge are arranged up and down on the same central axis, a metal filter plate is sleeved on the surface of the filtering barrel, the bottom end of the metal filter plate is nested and installed at the top of the cooling chamber, an electromagnetic valve is installed at the bottom end of the part of the metal filter plate extending out of the cooling chamber, a collar is sleeved on the outer surface of the mounting frame, the number of the collars is set to be multiple, the multiple collars are connected to each other, one end of one of the collars is installed with an elastic telescopic rod, the bottom end of the elastic telescopic rod is elastically connected to the inner wall of the processing barrel, and a trigger rod is installed on one side of the other collar.

[0013] Optionally, the diversion component includes an air pipe. A limiting frame is sleeved on the outer surface of the air pipe. The limiting frame is installed on the inner wall of the processing barrel. Through holes are arranged in an array at the top end of the air pipe. An air pump is installed on one side of the surface of the air pipe. A trigger ring is installed on the upper surface of the air pipe.

[0014] Optionally, the diversion component further includes a baffle. The baffle is nested and installed on the inner wall of the opening. A sealing ring is installed at the top end of the baffle. The sealing ring is in contact with the inner wall of the opening. One end of the baffle is connected to an electric push rod. The electric push rod is installed on one side of the bottom end of the mounting plate.

[0015] Optionally, the cleaning component includes a motor. The motor is installed at the top end of the inner wall of the cooling chamber. A screw rod is connected to the top end of the motor. The part where the bottom of the screw rod is connected to the top end of the motor is nested and installed on the inner wall of the cooling chamber. A sliding base is threadedly sleeved on the top end of the screw rod.

[0016] Optionally, the cleaning component further includes a liquid inlet barrel. A piston plate is slidably fitted in the inner cavity of the liquid inlet barrel. The bottom end of the piston plate is connected to the top end of the sliding base. A one-way valve one is installed through one side of the top of the liquid inlet barrel. One end of the one-way valve one is connected to a liquid storage barrel through a hose. The liquid storage barrel is installed on one side of the surface of the processing barrel. A one-way valve two is installed at the center of the top end of the liquid inlet barrel. A liquid inlet chamber is installed at the top end of the liquid inlet barrel. The top end 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.

[0017] Optionally, a support frame is installed on the outer surface of the liquid inlet barrel. The top end of the support frame is connected to the filter membrane. An installation sleeve is installed at the bottom end of the support frame. A turntable is nested in the installation sleeve. The number of the installation sleeves and the turntables is set to be multiple groups. Spray heads are installed through the side surface of the turntable. The number of the spray heads is set to be multiple groups. The multiple groups of spray heads are arranged in an equiangular circular array on the side surface of the turntable.

[0018] Optionally, a diversion pipe is connected through between multiple groups of the turntables. The number of the diversion pipes is set to be multiple groups. The multiple groups of diversion pipes are all installed between adjacent two groups of diversion pipes. Two of the multiple groups of diversion pipes are connected through. One end of another group of the multiple groups of diversion pipes is installed with a connecting pipe. The other end of the connecting pipe is connected through to the surface of the bottom end of the air pipe.

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

[0020] In the above solution, by setting up a filtering component, designing a porous sponge on the mounting plate in a special way, and cooperating with the liquid inlet and water inlet at the top of the processing barrel, the functional distinction of injecting the carbonylation synthesis acetic acid catalyst solution and clean water into the processing barrel is realized. By switching the injection between the carbonylation synthesis acetic acid catalyst solution and clean water, the cycle of removing heavy metal ion impurities and cleaning functions in the carbonylation synthesis acetic acid catalyst solution is realized. While ensuring the removal effect of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution, the service life of the filtering component is improved. At the same time, the orderly operation of two operation processes of heavy metal ion impurity removal - cleaning and maintenance is realized. At the same time, by arranging the filter barrel, metal filter plate and filter membrane in a special way, the multi-group filter barrel, metal filter plate and filter membrane are arranged in sequence from high to low. Utilizing the characteristics of fluid flowing from high to low, the removed heavy metal ion impurities are intercepted at the bottom positions of the multi-group filter barrel, metal filter plate and filter membrane, facilitating the subsequent cleaning component to carry out cleaning. Through the hierarchical filtration between the filter barrel, metal filter plate and filter membrane, the hierarchical removal of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution is realized. At the same time, through the suction effect of the three-way pump, the carbonylation synthesis acetic acid catalyst solution after preliminary removal is subjected to cyclic removal. By carrying out hierarchical removal and cyclic removal on the carbonylation synthesis acetic acid catalyst solution, the removal effect on the carbonylation synthesis acetic acid catalyst solution is further improved. At the same time, by setting a vent hole at the top of the mounting frame, the cavity between the mounting frame and the filter membrane is depressurized through the vent hole, ensuring the service life of the filter membrane. While ensuring the removal effect of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution by the filter membrane, the breakage probability of the filter membrane is reduced, and the use cost of the filter membrane is reduced.

[0021] By setting the diversion component, when injecting clear water into the processing barrel, the air pump is used to divert the clear water. When injecting clear water into the processing barrel to clean the filtration component, the clear water is shunted and utilized. At the same time, through the coordinated linkage among the baffle, the sealing ring, and the electric push rod, the switching of the clear water shunting effect is realized. When the cleaning component is operating, adaptive adjustment is carried out synchronously to ensure the cleaning effect of the filtration component. At the same time, when the air pump slides upward, the horizontal position of the collar is changed in real time through the trigger ring, so as to achieve the shielding and protection effect on the ventilation holes on the surface of the installation frame. At the same time, by arranging the sealing ring, when injecting the carbonylation synthesis acetic acid catalyst solution into the processing barrel, it is avoided that the carbonylation synthesis acetic acid catalyst solution leaks at the opening, and it is avoided that the heavy metal ion impurities in the leaked carbonylation synthesis acetic acid catalyst solution are not removed, thus affecting the removal effect of the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution. While ensuring the shunting and utilization effect of the trachea on the clear water, the removal effect of the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution is further ensured. At the same time, through the connection effect of the ball valve and the drain valve, the separate discharge of the carbonylation synthesis acetic acid catalyst solution after removing the heavy metal ion impurities and the cleaned liquid mixture is realized, avoiding interference between the two, and improving the compatibility of the equipment for the two functions of removing the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution and cleaning the residual heavy metal ion impurities.

[0022] By setting up a cleaning component, through the linkage between the motor, the screw rod and the sliding base, the discharge of the cleaning agent in the liquid inlet bucket is realized. At the same time, by utilizing the porous characteristics of the sponge, the discharged cleaning agent is adsorbed by the sponge column in the liquid inlet cavity. At the same time, through the shunt utilization effect of the clear water by the air pipe, when the clear water passes through the air pipe, the cleaning agent is transferred to the clear water by the sponge column, so that the clear water carries the cleaning agent, improving the cleaning effect of the clear water on the bottom surface of the metal filter plate. At the same time, through the liquid exchange effect between the liquid inlet bucket, the first one-way valve, the hose and the liquid storage bucket, the recycling and replenishment effect of the cleaning agent in the liquid inlet bucket is realized. Through the recycling and replenishment of the cleaning agent between the liquid inlet bucket and the liquid storage bucket, the sustainability of the liquid inlet bucket and the sponge column when adding the cleaning agent to the clear water is improved. At the same time, through the sliding effect of the support frame, the filter membrane is lifted, exposing the bottom surface of the metal filter plate. At the same time, through the sliding effect of the support frame, the positions of the turntable and the nozzle are synchronously adjusted, forming a cleaning position near the bottom surface of the metal filter plate. At the same time, by arranging the diversion pipe and the turntable in sequence at different heights, the multi-group of filter barrels, metal filter plates and filter membranes arranged in sequence at different heights are synchronously coordinated, so as to realize the key cleaning of the heavy metal ion impurities intercepted at the bottom ends of the multi-group of filter barrels, metal filter plates and filter membranes arranged in sequence at different heights. At the same time, through the special design of the water outlet passage in the turntable, by using the acting force when the water flow passes through the passage in the turntable, the turntable is made to produce a rotating effect. By utilizing the rotating effect of the turntable, the cleaning effect of the nozzle on the bottom surface of the metal filter plate is further improved. At the same time, in cooperation with the shunt effect of the clear water by the air pipe, the cleaning effect on both the inner and outer surfaces of the metal filter plate is realized, without the need to separately disassemble and clean the filter component, further improving the cleaning effect on the residual heavy metal ion impurities while improving the cleaning efficiency of the filter component. At the same time, the cleaned liquid mixture is centrally adsorbed and removed by the magnetic adsorption rod, avoiding secondary pollution caused by heavy metal ion impurities. At the same time, in subsequent maintenance, the operator can disassemble and maintain the magnetic adsorption rod, extending the service life of the magnetic adsorption rod and ensuring the adsorption effect on heavy metal ion impurities, reducing the use cost of subsequent maintenance and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0024] Figure 1 is a schematic diagram of the overall structure of the filtering device;

[0025] Figure 2 is a schematic sectional view of the filtering device;

[0026] Figure 3 is a schematic diagram of the structure of some components of the filtering component;

[0027] Figure 4 is Figure 3 an enlarged view of A in

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

[0029] Figure 6 a schematic diagram of the partial sectional structure of the filtering component;

[0030] Figure 7 a schematic diagram of the partial component structure of the diversion component;

[0031] Figure 8 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;

[0033] Figure 10 a schematic diagram of the partial component structure of the cleaning component;

[0034] Figure 11 a schematic diagram of the partial sectional structure of the cleaning component;

[0035] Figure 12 is Figure 11 a locally enlarged structural schematic diagram of

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

[0037] Figure 14 a schematic diagram of the support frame, mounting sleeve, turntable and diversion pipe structure;

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

[0039] Reference numerals:

[0040] 1. Processing barrel; 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 tube; 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 barrel; 138. Flow guide elbow; 139. Metal filter plate; 1390. Solenoid valve; 1310. Collar; 1311. Elastic telescopic rod; 1312. Trigger rod; 14. Flow guide assembly; 141. Air pipe; 142. Limiting frame; 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 barrel; 155. Piston plate; 156. Check valve one; 157. Hose; 158. Liquid storage barrel; 1580. Check valve two; 159. Liquid inlet chamber; 1510. Sponge column; 1511. Support frame; 1512. Mounting sleeve; 1513. Turntable; 1514. Sprayer; 1515. Flow guide pipe; 1516. Connecting pipe.

[0041] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0042] The following describes in detail a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution and its filtration equipment provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0043] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. In addition, when combining an embodiment to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

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

[0045] It will be understood that the meanings of "on", "above", and "over" in the present invention should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0046] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be similarly interpreted accordingly.

[0047] As Figures 1 to 15 shown, an embodiment of the present invention provides a method for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, the method comprising the following steps:

[0048] S1. First, introduce the carbonylation synthesis acetic acid catalyst solution into a filtration device, add a mixed strongly acidic ion exchange resin to the carbonylation synthesis acetic acid catalyst solution in the processing barrel 1, and preliminarily adsorb heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution through the strongly acidic ion exchange resin;

[0049] S2. Subsequently, circularly filter and adsorb the adsorbed carbonylation synthesis acetic acid catalyst solution through the filtration assembly 13, divert the adsorbed carbonylation synthesis acetic acid catalyst solution into the cooling chamber 8, cool the carbonylation synthesis acetic acid catalyst solution, and centrally collect the carbonylation synthesis acetic acid catalyst solution after removing heavy metal ion impurities;

[0050] S3. Pour clean water into the processing barrel 1 to clean the ion exchange resin in the processing barrel 1, and centrally collect the cleaned ion exchange resin. At the same time, circulate and filter and adsorb the liquid after cleaning the ion exchange resin through the filtering component 13;

[0051] S4. Recycle the water solution for cleaning the ion exchange resin through the diversion component 14, perform secondary cleaning on the filtering component 13 through the cleaning component 15, and centrally adsorb and process the water solution mixture after cleaning through the magnetic adsorption rod 12.

[0052] The present application also provides another technical solution: a device for removing metal impurity ions from a carbonylation synthesis acetic acid catalyst solution, as Figures 1 to 15 shown. The filtering device includes a processing barrel 1. One side of the top surface of the processing barrel 1 is installed with an air inlet 2 in a penetrating manner. The other side of the top surface of the processing barrel 1 is installed with a liquid inlet 3. The center of the top surface of the processing barrel 1 is installed with a water inlet 4 in a penetrating manner. One side of the processing barrel 1 is installed with a resin replenishing port 5. One side of the middle surface of the processing barrel 1 is installed with a control module 50. The other side of the processing barrel 1 is installed with a cleaning door 6. The other side surface of the processing barrel 1 is installed with a three-way pump 7. A cooling chamber 8 is arranged in the inner cavity of the processing barrel 1. A valve 80 is installed at the top of the cooling chamber 8 in a penetrating manner. A condensing pipe 9 is installed on the inner wall of the cooling chamber 8. A ball valve 10 is installed at the bottom of the cooling chamber 8 in a penetrating manner. One side of the bottom end of the inner wall of the cooling chamber 8 is installed with a drain valve 11. A plurality of magnetic adsorption rods 12 are threadedly connected to the bottom of the processing barrel 1, a filtering component 13 is installed on the inner wall of the processing barrel 1, and the filtering component 13 is used for removing metal impurity ions in the solution. A diversion component 14 is installed at the top of the cooling chamber 8, and the diversion component 14 is used for diverting clean water into the filtering component 13. A cleaning component 15 is used for cleaning the filtering component 13. The diversion component 14 is located in the central axis direction of the filtering component 13, and the cleaning component 15 is located at the bottom of the diversion component 14.

[0053] By setting up the filtration component 13, the hierarchical removal of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution is achieved. At the same time, through the suction effect of the three-way pump 7, the carbonylation synthesis acetic acid catalyst solution after preliminary removal is subjected to cyclic removal. By performing hierarchical removal and cyclic removal on 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 diversion component 14, the switching of the clear water diversion effect is realized. During the operation of the cleaning component 15, adaptive adjustment is synchronously carried out to ensure the cleaning effect of the filtration component 13. By setting up the cleaning component 15, the key cleaning of the heavy metal ion impurities intercepted at the bottom of multiple groups of filter barrels 137, metal filter plates 139, and filter membranes 136 arranged in sequence from high to low is realized. At the same time, through the special design of the water outlet passage in the turntable 1513, the acting force of the water flow passing through the passage in the turntable 1513 is utilized to make the turntable 1513 produce a rotating effect. By utilizing the rotating effect of the turntable 1513.

[0054] As Figures 3 to 6 shown, the filtration component 13 includes a mounting plate 131, the mounting plate 131 is installed on the inner wall of the processing barrel 1, a porous sponge 132 is nested on the surface of the mounting plate 131, the number of the porous sponges 132 is set to multiple groups, and the multiple groups of porous sponges 132 are arranged in an equiangular circular array on the surface of the mounting plate 131. An opening 133 is installed through the center at the bottom end of the mounting plate 131. The filtration component 13 further includes a mounting frame 134, the number of the mounting frames 134 is set to multiple groups, and the multiple groups of mounting frames 134 are all installed on the inner wall of the processing barrel 1. Vent 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, and the material of the filter membrane 136 is set to polyvinyl chloride. A filter barrel 137 is nested on the inner wall at the top end of the mounting frame 134, the bottom end of the filter barrel 137 is connected to the top end of the cooling chamber 8 in a through manner, a diversion elbow 138 is installed at the top end of the filter barrel 137, and the diversion elbow 138 and the porous sponge 132 are arranged up and down on the same central axis. A metal filter plate 139 is sleeved on the surface of the filter barrel 137, the bottom end of the metal filter plate 139 is nested on the top end of the cooling chamber 8, and a solenoid valve 1390 is installed at the bottom end of the part of the metal filter plate 139 extending out of the cooling chamber 8. A collar 1310 is sleeved on the outer surface of the mounting frame 134, the number of the collars 1310 is set to multiple, and the multiple collars 1310 are connected to each other. One end of one of the collars 1310 is installed with an elastic telescopic rod 1311, and the bottom end of the elastic telescopic rod 1311 is elastically connected to the inner wall of the 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 barrel 1 through the liquid inlet 3. At the same time, through the resin replenishment port 5, a strongly acidic ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing barrel 1, so that the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1 is filled with a mixture of the carbonylation synthesis acetic acid catalyst solution and the strongly acidic ion exchange resin. The strongly acidic ion exchange resin is used to preliminarily remove heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution;

[0056] Subsequently, high-pressure gas is continuously pumped into the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1 through the gas inlet 2. Under the continuous entry of the high-pressure gas, the preliminarily removed carbonylation synthesis acetic acid catalyst solution is extruded through the porous sponge 132 at the top of the mounting plate 131 and flows into the diversion elbow 138, and enters the internal cavity of the filter barrel 137 through the diversion elbow 138. First, the filter barrel 137 filters the carbonylation synthesis acetic acid catalyst solution. Subsequently, the filtered carbonylation synthesis acetic acid catalyst solution passes through the metal filter plate 139 and the filter membrane 136 in sequence. Using the hierarchical filtration effects of the filter barrel 137, the metal filter plate 139, and the filter membrane 136, the carbonylation synthesis acetic acid catalyst solution is hierarchically filtered. During this process, the cavity between the mounting frame 134 and the filter membrane 136 is depressurized through the vent holes 135 on the surface of the mounting frame 134 to avoid damaging the filter membrane 136;

[0057] The carbonylation synthesis acetic acid catalyst solution after three-stage filtration enters the space formed between the bottom of the mounting plate 131 and the top of the cooling chamber 8. Subsequently, the operator starts the three-way pump 7 to suck the carbonylation synthesis acetic acid catalyst solution in the space formed between the bottom of the mounting plate 131 and the top of the cooling chamber 8 back into the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1, and repeats the above steps to circularly filter the sucked carbonylation synthesis acetic acid catalyst solution;

[0058] When the carbonylation synthesis acetic acid catalyst solution completes the repeated suction and circular filtration, at this time, the operator starts the valve 80 through the control module 50, so that the carbonylation synthesis acetic acid catalyst solution after the filtration treatment in the space formed between the bottom of the mounting plate 131 and the top of the cooling chamber 8 enters the cooling chamber 8, and the carbonylation synthesis acetic acid catalyst solution is cooled through the condensing pipe 9 on the inner wall of the cooling chamber 8. When the carbonylation synthesis acetic acid catalyst solution is completely cooled, the operator opens the ball valve 10 to centrally collect and process the carbonylation synthesis acetic acid catalyst solution in the cooling chamber 8;

[0059] Subsequently, the operator opens the cleaning door 6 on one side of the processing barrel 1 to centrally collect the strongly acidic ion exchange resin. After the collection of the strongly acidic ion exchange resin is completed, clean water is injected into the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1 through the water inlet 4. Similarly, when clean water is injected into the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1, the air inlet 2 continuously pumps high-pressure gas into the space formed between the top of the mounting plate 131 and the inner wall of the processing barrel 1. Under the continuous entry of the high-pressure gas, the clean water is extruded through the porous sponge 132 at the top of the mounting plate 131 and flows into the diversion elbow 138, and then enters the internal cavity of the filter barrel 137 through the diversion elbow 138. The filter barrel 137, the metal filter plate 139, and the filter membrane 136 are cleaned in stages by the clean water. At the same time, after being cleaned by the clean water, it is discharged through the filter membrane 136 and concentrated in the space formed between the bottom of the mounting plate 131 and the top of the cooling chamber 8, and 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 entering 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 chamber at the bottom of the cooling chamber 8 through the drain valve 11 at the bottom end of the inner wall of the cooling chamber 8.

[0061] By specially designing the porous sponge 132 on the mounting plate 131 and cooperating with the liquid inlet 3 and the water inlet 4 at the top of the processing barrel 1, the functional distinction of injecting the carbonylation synthesis acetic acid catalyst solution and clean water into the processing barrel 1 is realized. At the same time, by specially arranging the filter barrel 137, the metal filter plate 139, and the filter membrane 136, the filter barrel 137, the metal filter plate 139, and the filter membrane 136 are arranged in sequence from high to low. Utilizing the characteristics of the fluid flowing from high to low, the heavy metal ion impurities removed by filtration are intercepted at the bottom positions of the multiple groups of filter barrel 137, the metal filter plate 139, and the filter membrane 136, facilitating the subsequent cleaning of the cleaning component 15. At the same time, by providing a vent hole 135 at the top of the mounting frame 134, the cavity between the mounting frame 134 and the filter membrane 136 is depressurized through the vent hole 135 to ensure the service life of the filter membrane 136.

[0062] Such as Figures 7 to 9As shown in the figure, the diversion component 14 includes an air pipe 141. A limit frame 142 is sleeved on the outer surface of the air pipe 141. The limit frame 142 is installed on the inner wall of the processing barrel 1. Through holes 143 are arranged in an array at the top end 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 diversion component 14 further includes a baffle 146. The baffle 146 is nested and installed on the inner wall of the opening 133. A sealing ring 147 is installed at the top end 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] While the air pipe 141 slides upward, it continuously slides under the action of the limit frame 142. While the air pipe 141 slides, it drives the through holes 143 at the top end to approach and contact the bottom end of the baffle 146. When the top end of the air pipe 141 contacts the bottom end 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, so that the sealing ring 147 is separated from the inner wall of the opening 133. When the sliding base 153 slides in place, the side surface of the top end of the air pipe 141 contacts the inner wall of the opening 133, and a passage is formed 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. Subsequently, the control module 50 controls the air pump 144 to start. The air pump 144 sucks in the inner cavity of the air pipe 141, and sucks the clear 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 clear water enters the air pipe 141 and reaches the bottom end inside the air pipe 141;

[0064] While the air pipe 141 slides, it drives the trigger ring 145 on the surface to slide upward synchronously. While the trigger ring 145 slides, it contacts and pushes the trigger rod 1312, so that the trigger rod 1312 drives a plurality of interconnected collar rings 1310 to slide upward synchronously. While the collar rings 1310 slide, they drive the elastic telescopic rods 1311 to contract. While the collar rings 1310 slide, they fit on the surface of the mounting frame 134. When the air pipe 141 slides in place, the air pipe 141 drives the collar rings 1310 to slide in place synchronously, covering the ventilation holes 135 on the surface of the mounting frame 134, achieving the protection effect on the ventilation holes 135;

[0065] While the trachea 141 slides downward, the lateral surface of the top end of the trachea 141 is disengaged 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 reversely and reset, so that the sealing ring 147 is in contact with the inner wall of the opening 133 again for sealing. While the trachea 141 slides downward, the trigger ring 145 on the surface is driven to slide downward synchronously. While the trigger ring 145 slides, it is disengaged from the trigger rod 1312, so that the elastic telescopic rod 1311 is unloaded and extended. While the elastic telescopic rod 1311 extends, it drives a plurality of interconnected collar rings 1310 to slide downward and reset synchronously, thereby completing the removal of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution.

[0066] By providing the trachea 141 and the air pump 144, when injecting clean water into the processing barrel 1, the air pump 144 is used to divert the clean water. When injecting clean water into the processing barrel 1 to clean the filtering assembly 13, the clean water is shunted and utilized. At the same time, through the coordinated linkage among the baffle 146, the sealing ring 147 and the electric push rod 148, the switching of the clean water diversion effect is realized.

[0067] Such as Figures 10 to 15As shown, the cleaning component 15 includes a motor 151. The motor 151 is installed at the top end of the inner wall of the cooling chamber 8. The top end of the motor 151 is connected to a screw rod 152. The bottom part of the screw rod 152 connected to the top end of the motor 151 is nested and installed on the inner wall of the cooling chamber 8. A sliding base 153 is threadedly sleeved on the top end of the screw rod 152. The cleaning component 15 further includes a liquid inlet barrel 154. A piston plate 155 is slidably fitted in the inner cavity of the liquid inlet barrel 154. The bottom end of the piston plate 155 is connected to the top end of the sliding base 153. A one-way valve 156 is installed through one side of the top of the liquid inlet barrel 154. One end of the one-way valve 156 is connected to a liquid storage barrel 158 through a hose 157. The liquid storage barrel 158 is installed on one side of the surface of the processing barrel 1. A one-way valve 1580 is installed at the center of the top end of the liquid inlet barrel 154. A liquid inlet chamber 159 is installed at the top end of the liquid inlet barrel 154. The top end of the liquid inlet chamber 159 is nested and installed at the bottom end of the air pipe 141. A sponge column 1510 is installed on the inner wall of the liquid inlet chamber 159. A support frame 1511 is installed on the outer surface of the liquid inlet barrel 154. The top end of the support frame 1511 is connected to the filter membrane 136. The bottom end of the support frame 1511 is installed with a mounting sleeve 1512. A turntable 1513 is nested in the mounting sleeve 1512. The number of the mounting sleeves 1512 and the turntables 1513 is set to be multiple groups. A spray head 1514 is installed through the side of the turntable 1513. The number of the spray heads 1514 is set to be multiple groups. The multiple groups of spray heads 1514 are arranged in an equiangular circular array on the side of the turntable 1513. A diversion pipe 1515 is connected through between the multiple groups of turntables 1513. The number of the diversion pipes 1515 is set to be multiple groups. The multiple groups of diversion pipes 1515 are all installed between two adjacent diversion pipes 1515. Two of the multiple groups of diversion pipes 1515 are connected through. One end of another group of diversion pipes 1515 among the multiple groups of diversion pipes 1515 is installed with a connecting pipe 1516. The other end of the connecting pipe 1516 is connected through to the surface of the bottom end of the air pipe 141.

[0068] Meanwhile, the operator starts the motor 151 through the control module 50. After the motor 151 starts, it drives the screw rod 152 to rotate synchronously. Under the rotation of the screw rod 152, the sliding base 153 threadedly sleeved on the surface of the screw rod 152 slides upward along the screw rod 152. While the screw rod 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and squeezes in the inner cavity of the liquid inlet barrel 154. Under the continuous squeezing action of the piston plate 155, the cleaning agent stored in the liquid inlet barrel 154 is squeezed into the liquid inlet chamber 159 through the one-way valve 1580. Utilizing the porous property of the sponge, the cleaning agent is adsorbed through the sponge column 1510, so that the surface of the sponge column 1510 is filled with the cleaning agent. When the piston plate 155 is squeezed in place, under the rotation of the screw rod 152, the sliding base 153 drives the piston plate 155 and the liquid inlet barrel 154 to continue sliding, and pushes the liquid inlet chamber 159 and the air pipe 141 to continue sliding upward;

[0069] While the sliding base 153 drives the liquid inlet barrel 154 to slide, it simultaneously drives the support frame 1511 to slide upward synchronously. While the support frame 1511 slides, it drives the bottom end of the filter membrane 136 to slide synchronously. While the inner wall of the bottom end of the filter membrane 136 slides, it contacts the surface of the metal filter plate 139. While the support frame 1511 slides, it drives the mounting sleeve 1512 and the turntable 1513 to slide synchronously, so that the spray head 1514 on the side of the turntable 1513 is aligned with the bottom surface of the metal filter plate 139;

[0070] After the clean water enters the air pipe 141, it continuously enters the diversion 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 cleaning agent in the clean water passing through the sponge column 1510. After the clean water passes through the diversion pipe 1515, it enters the turntable 1513. Under the continuous entry of the clean water, by specially designing the internal structure of the turntable 1513 into a curved channel, using the acting force when the clean water passes through the curved pipe in the turntable 1513, the turntable 1513 generates a rotating effect in the mounting sleeve 1512. At the same time, the clean water is sequentially ejected through the spray heads 1514 on the side of the turntable 1513 to clean the bottom surface of the metal filter plate 139;

[0071] When the cleaned clean water is concentrated and enters the chamber at the bottom of the cooling chamber 8, the multi-group magnetic adsorption rods 12 adsorb and process the liquid mixture in the chamber at the bottom 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 daily maintenance, the operator can remove the multi-group magnetic adsorption rods 12 for cleaning and maintenance to extend the service life of the multi-group magnetic adsorption rods 12. After the secondary adsorption treatment of the cleaned liquid mixture, the cleaned liquid mixture is centrally discharged and collected through the sewage outlet on one side of the processing barrel 1 to avoid secondary pollution;

[0072] At the same time, the control module 50 starts the motor 151 again. After the motor 151 starts, it drives the screw 152 to rotate reversely synchronously. Under the reverse rotation of the screw 152, the sliding base 153 with a thread sleeve on the surface of the screw 152 slides downward along 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 sucks in the inner cavity of the liquid inlet barrel 154. Under the continuous sucking action of the piston plate 155, the cleaning agent stored in the liquid storage barrel 158 is sucked into the liquid inlet barrel 154 through the check valve 156 and the hose 157 to complete the cyclic replenishment of the cleaning agent in the liquid inlet barrel 154. While the sliding base 153 drives the liquid inlet barrel 154 to slide, it simultaneously drives the support frame 1511 to slide downward synchronously. While the support frame 1511 slides, it drives the bottom end of the filter membrane 136 to slide and reset synchronously;

[0073] After the piston plate 155 slides down to the in-place position, under the reverse rotation of the screw 152, the sliding base 153 drives the piston plate 155 and the liquid inlet barrel 154 to continue sliding down, and drives the liquid inlet cavity 159 and the air pipe 141 to continue sliding down and reset.

[0074] By setting the linkage among the motor 151, the screw 152 and the sliding base 153, the discharge of the cleaning agent in the liquid inlet barrel 154 is realized. At the same time, by utilizing the porous characteristics of the sponge, the sponge column 1510 in the liquid inlet cavity 159 adsorbs the discharged cleaning agent. At the same time, through the effect of the diversion of the clear water by the air pipe 141, when the clear water passes through the air pipe 141, the cleaning agent is transferred to the clear water through the sponge column 1510, so that the clear water carries the cleaning agent, improving the cleaning effect of the clear water on the bottom surface of the metal filter plate 139. At the same time, through the sliding effect of the support frame 1511, the filter membrane 136 is lifted, so that the bottom surface of the metal filter plate 139 is exposed, forming a cleaning positioning near the bottom surface of the metal filter plate 139, and 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 the present invention is as follows:

[0076] First, the operator replenishes the carbonylation synthesis acetic acid catalyst solution into the processing barrel 1 through the liquid inlet 3. At the same time, through the resin replenishment port 5, a strongly acidic ion exchange resin is added to the carbonylation synthesis acetic acid catalyst solution in the processing barrel 1, so that the space formed between the top end of the mounting plate 131 and the inner wall of the processing barrel 1 is filled with a mixture of the carbonylation synthesis acetic acid catalyst solution and the strongly acidic ion exchange resin, and the strongly acidic ion exchange resin preliminarily removes the heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution.

[0077] Subsequently, high-pressure gas is continuously pumped into the space formed between the top end of the mounting plate 131 and the inner wall of the processing barrel 1 through the air inlet 2. Under the continuous entry of the high-pressure gas, the preliminarily removed carbonylation synthesis acetic acid catalyst solution is extruded through the porous sponge 132 at the top end of the mounting plate 131 and flows into the diversion elbow 138, and enters the inner cavity of the filter barrel 137 through the diversion elbow 138. First, the filter barrel 137 filters the carbonylation synthesis acetic acid catalyst solution, and then the filtered carbonylation synthesis acetic acid catalyst solution passes through the metal filter plate 139 and the filter membrane 136 in sequence. By using the hierarchical filtration effects of the filter barrel 137, the metal filter plate 139 and the filter membrane 136, the carbonylation synthesis acetic acid catalyst solution is hierarchically filtered. During this process, the cavity between the mounting frame 134 and the filter membrane 136 is depressurized through the vent holes 135 on the surface of the mounting frame 134, avoiding damage to the filter membrane 136.

[0078] The carbonylation synthesis acetic acid catalyst solution after three-stage filtration enters the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8. Subsequently, the operator starts the three-way pump 7 to re-aspirate 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 into the space formed by the top of the mounting plate 131 and the inner wall of the processing barrel 1, and repeats the above steps to perform cyclic filtration on the aspirated carbonylation synthesis acetic acid catalyst solution.

[0079] When the carbonylation synthesis acetic acid catalyst solution completes the repeated aspiration cyclic filtration, at this time, the operator starts the valve 80 through the control module 50, so that the carbonylation synthesis acetic acid catalyst solution after the filtration treatment in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8 enters the cooling chamber 8, and the carbonylation synthesis acetic acid catalyst solution is cooled by the condensing pipe 9 on the inner wall of the cooling chamber 8. When the carbonylation synthesis acetic acid catalyst solution is completely cooled, the operator opens the ball valve 10 to perform centralized collection treatment on the carbonylation synthesis acetic acid catalyst solution in the cooling chamber 8.

[0080] Subsequently, the operator opens the cleaning door 6 on one side of the processing barrel 1 to centrally collect the strongly acidic ion exchange resin. After the collection of the strongly acidic ion exchange resin is completed, clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing barrel 1 through the water inlet 4. Similarly, when clean water is injected into the space formed by the top of the mounting plate 131 and the inner wall of the processing barrel 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 barrel 1. Under the continuous entry of the high-pressure gas, the clean water is extruded through the porous sponge 132 at the top of the mounting plate 131 and flows into the diversion elbow 138, and enters the internal cavity of the filter barrel 137 through the diversion elbow 138. The filter barrel 137, the metal filter plate 139, and the filter membrane 136 are cleaned in stages by the clean water, and at the same time, the clean water is discharged through the filter membrane 136 after cleaning, concentrated in the space formed by the bottom of the mounting plate 131 and the top of the cooling chamber 8, and 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 entering 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 chamber at the bottom of the cooling chamber 8 through the drain valve 11 at the bottom of the inner wall of the cooling chamber 8.

[0082] Meanwhile, the operator starts the motor 151 through the control module 50. After the motor 151 starts, it drives the screw rod 152 to rotate synchronously. Under the rotation of the screw rod 152, the sliding base 153 with a thread sleeve sleeved on the surface of the screw rod 152 slides upward along the screw rod 152. While the screw rod 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and squeezes inside the inner cavity of the liquid inlet barrel 154. Under the continuous squeezing action of the piston plate 155, the cleaner stored in the liquid inlet barrel 154 is squeezed into the liquid inlet cavity 159 through the check valve two 1580. Utilizing the porous characteristics of the sponge, the sponge column 1510 adsorbs the cleaner, making the surface of the sponge column 1510 full of the cleaner. When the piston plate 155 is squeezed in place, under the rotation of the screw rod 152, the sliding base 153 drives the piston plate 155 and the liquid inlet barrel 154 to continue sliding, and pushes the liquid inlet cavity 159 and the air pipe 141 to continue sliding upward.

[0083] While the air pipe 141 slides upward, it continuously slides under the action of the limit frame 142. While the air pipe 141 slides, it drives the through hole 143 at the top to approach and contact the bottom end of the baffle 146. When the top end of the air pipe 141 contacts the bottom end 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, so that the sealing ring 147 is separated from the inner wall of the opening 133. When the sliding base 153 slides in place, the side surface of the top end of the air pipe 141 contacts the inner wall of the opening 133, forming a passage between the space formed between the top end of the mounting plate 131 and the inner wall of the processing barrel 1 and the air pipe 141. Subsequently, the control module 50 controls the air pump 144 to start. The air pump 144 sucks in the inner cavity of the air pipe 141, sucking the clear water in the space formed between 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 clear water enters the air pipe 141 and reaches the bottom end inside the air pipe 141.

[0084] While the air pipe 141 slides, it drives the trigger ring 145 on the surface to slide upward synchronously. While the trigger ring 145 slides, it contacts and pushes the trigger rod 1312, so that the trigger rod 1312 drives a plurality of interconnected collar rings 1310 to slide upward synchronously. While the collar rings 1310 slide, they drive the elastic telescopic rod 1311 to contract. While the collar rings 1310 slide, they fit on the surface of the mounting frame 134. When the air pipe 141 slides in place, the air pipe 141 drives the collar rings 1310 to slide in place synchronously, covering the ventilation holes 135 on the surface of the mounting frame 134, achieving the protection effect on the ventilation holes 135.

[0085] While the sliding base 153 drives the liquid inlet barrel 154 to slide, it simultaneously drives the support frame 1511 to slide upward synchronously. While the support frame 1511 slides, it drives the bottom end of the filter membrane 136 to slide synchronously. While the inner wall of the bottom end of the filter membrane 136 slides, it contacts the surface of the metal filter plate 139. While the support frame 1511 slides, it drives the mounting sleeve 1512 and the turntable 1513 to slide synchronously, so that the spray head 1514 on the side of the turntable 1513 is aligned with the bottom surface of the metal filter plate 139.

[0086] After the clear water enters the air pipe 141, it continuously enters the diversion pipe 1515 through the connecting pipe 1516. During this process, when the clear water passes through the sponge column 1510, the sponge column 1510 mixes the cleaning agent into the clear water passing through it. After the clear water passes through the diversion pipe 1515, it enters the turntable 1513. Under the continuous entry of the clear water, by specially designing the internal structure of the turntable 1513 into a curved channel, using the acting force when the clear water passes through the curved pipe in the turntable 1513, the turntable 1513 generates a rotating effect in the mounting sleeve 1512. At the same time, the clear water is sequentially ejected through the spray heads 1514 on the side of the turntable 1513 to clean the bottom surface of the metal filter plate 139.

[0087] When the cleaned clear water collectively enters the chamber at the bottom end of the cooling chamber 8, the multi-group magnetic adsorption rods 12 are used to perform an adsorption treatment on the liquid mixture in the chamber at the bottom end of the cooling chamber 8, and to perform a secondary treatment on the residual heavy metal ion impurities in the cleaned liquid mixture. At the same time, during daily maintenance, the operator can remove the multi-group magnetic adsorption rods 12 for cleaning and maintenance to extend the service life of the multi-group magnetic adsorption rods 12. After the secondary adsorption treatment of the cleaned liquid mixture, the cleaned liquid mixture is collectively discharged and collected through the sewage outlet on one side of the processing barrel 1 to avoid causing secondary pollution.

[0088] At the same time, the control module 50 starts the motor 151 again. After the motor 151 starts, it drives the screw rod 152 to rotate in the reverse direction synchronously. Under the reverse rotation of the screw rod 152, the sliding base 153 with a thread sleeved on the surface of the screw rod 152 slides downward along the screw rod 152. While the screw rod 152 slides, it first drives the piston plate 155 to slide synchronously, so that the piston plate 155 slides and sucks in the internal cavity of the liquid inlet barrel 154. Under the continuous sucking action of the piston plate 155, the cleaning agent stored in the liquid storage barrel 158 is sucked into the liquid inlet barrel 154 through the one-way valve 156 and the hose 157, completing the cyclic replenishment of the cleaning agent in the liquid inlet barrel 154. While the sliding base 153 drives the liquid inlet barrel 154 to slide, it simultaneously drives the support frame 1511 to slide downward synchronously. While the support frame 1511 slides, it drives the bottom end of the filter membrane 136 to slide and reset synchronously.

[0089] After the piston plate 155 slides down to the in-place position, under the reverse rotation of the screw rod 152, the sliding base 153 drives the piston plate 155 and the liquid inlet barrel 154 to continue sliding down, and drives the liquid inlet cavity 159 and the air pipe 141 to continue sliding down and reset.

[0090] When the air pipe 141 slides down, the side surface of the top end of the air pipe 141 is disengaged 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 drives the baffle 146 and the sealing ring 147 to slide reversely and reset, so that the sealing ring 147 comes into contact with the inner wall of the opening 133 again for sealing. When the air pipe 141 slides down, the trigger ring 145 on its surface slides down synchronously. When the trigger ring 145 slides, it is disengaged from the trigger rod 1312, so that the elastic telescopic rod 1311 is unloaded and extends. When the elastic telescopic rod 1311 extends, it drives a plurality of interconnected collar rings 1310 to slide down and reset synchronously, thereby completing the removal of heavy metal ion impurities in the carbonylation synthesis acetic acid catalyst solution.

[0091] The present invention covers any substitutions, modifications, equivalent methods, and solutions made to the essence and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without the description of these details. In addition, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0092] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for removing metal impurity ions from a carbonylation catalyst solution for acetic acid synthesis, characterized in that: The method comprises the following steps: S1. First, the carbonylation acetic acid synthesis catalyst solution is introduced into a filtering device, and a mixed strong acid ion exchange resin is added to the carbonylation acetic acid synthesis catalyst solution in a processing barrel, and the heavy metal ion impurities in the carbonylation acetic acid synthesis catalyst solution are preliminarily adsorbed by the strong acid ion exchange resin; S2, then circulating the adsorbed carbonylation acetic acid synthesis catalyst solution through the filtering component for filtration and adsorption, and directing the adsorbed carbonylation acetic acid synthesis catalyst solution into the cooling chamber, cooling the carbonylation acetic acid synthesis catalyst solution, and centrally collecting the carbonylation acetic acid synthesis catalyst solution after the heavy metal ion impurities are removed; S3. Pour clean water into the processing barrel, divert the water for use through the diversion component, perform secondary cleaning on the filter component through the cleaning component, and centrally adsorb the cleaned water-liquid mixture through the magnetic adsorption rod.

2. A filtering device for removing metal impurity ions from the catalyst solution for carbonylation synthesis of acetic acid according to claim 1, characterized in that: The invention comprises a processing barrel, wherein an air inlet is installed through one side of the top surface of the processing barrel, a liquid inlet is installed on the other side of the top surface of the processing barrel, a water inlet is installed through the center of the top surface of the processing barrel, a resin replenishing port is installed on one side of the processing barrel, a control module is installed on one side of the middle surface of the processing barrel, a cleaning door is installed on the other side of the processing barrel, a three-way pump is installed on the surface of the other side of the processing barrel, a cooling chamber is arranged in the internal cavity of the processing barrel, a valve is installed through the top of the cooling chamber, a condenser is installed on the inner wall of the cooling chamber, and a cooling chamber is installed through the bottom of the cooling chamber. A ball valve is installed in the passage, a drain valve is installed on one side of the bottom end of the inner wall of the cooling chamber, multiple groups of magnetic adsorption rods are threadedly connected to the bottom end 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 in the solution, a guide assembly, a guide assembly is installed on the top of the cooling chamber, the guide assembly is used to guide clean water into the filter assembly, a cleaning assembly, the cleaning assembly is used to clean the filter assembly, the guide assembly is located in the direction of the central axis of the filter assembly, and the cleaning assembly is located at the bottom of the guide assembly.

3. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 2, characterized in that: The filter assembly includes a mounting plate, which is mounted on the inner wall of the processing barrel. A porous sponge is nested and mounted on the surface of the mounting plate. The number of the porous sponges is set to multiple groups. 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.

4. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 3, characterized in that: The filter assembly also includes a mounting frame, the number of the mounting frames is set to multiple groups, and the multiple groups of mounting frames are all installed on the inner wall of the processing barrel, the surface of the mounting frame is penetrated by a vent hole, the bottom end of the mounting frame is connected to a filter membrane, the material of the filter membrane is set to polyvinyl chloride, the top inner wall of the mounting frame is nested and installed, the bottom end of the filter barrel is penetrated and connected with the top end of the cooling chamber, a guide elbow is installed on the top of the filter barrel, the guide elbow and the porous sponge are arranged up and down on the same central axis, a metal filter plate is sleeved on the surface of the filter barrel, the bottom end of the metal filter plate is nested and installed on the top of the cooling chamber, and a solenoid valve is installed on the bottom end of the part of the metal filter plate extending out of the cooling chamber, the outer surface of the mounting frame is sleeved with a ring, the number of the rings is set to multiple, and the multiple rings are connected to each other, one end of one of the rings is installed with an elastic telescopic rod, the bottom end of the elastic telescopic rod is elastically connected to the inner wall of the processing barrel, and a trigger rod is installed on one side of the other ring.

5. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 4, characterized in that: The guide assembly includes an air pipe, the outer surface of the air pipe is sleeved with a limit frame, the limit frame is installed on the inner wall of the processing barrel, the top end of the air pipe is arrayed with through holes, 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.

6. The filtering device for metal impurity ions of carbonylation synthesis of acetic acid catalyst solution according to claim 5, characterized in that: The guide 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 the sealing ring is in contact with the inner wall of the opening. One end of the baffle is connected to an electric push rod, and the electric push rod is installed on one side of the bottom end of the mounting plate.

7. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 6, characterized in that: The cleaning component includes a motor, which is installed on the top of the inner wall of the cooling chamber. The top of the motor is connected to a screw. The bottom of the screw and the connecting part of the motor top are nested and installed on the inner wall of the cooling chamber. The threaded sleeve on the top of the screw is provided with a sliding base.

8. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 7, characterized in that: The cleaning assembly also includes a liquid inlet barrel, a piston plate slidingly fitted in the internal cavity of the liquid inlet barrel, the bottom end of the piston plate is connected to the top of the sliding base, a one-way valve 1 is installed through one side of the top of the liquid inlet barrel, one end of the one-way valve 1 is connected to a liquid storage barrel through a hose, the liquid storage barrel is installed on one side of the surface of the processing barrel, a one-way valve 2 is installed at the center of the top of the liquid inlet barrel, a liquid inlet cavity is installed on the top of the liquid inlet barrel, the top of the liquid inlet cavity is nested and installed at the bottom of the trachea, and a sponge column is installed on the inner wall of the liquid inlet cavity.

9. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 8, characterized in that: A support frame is installed on the outer surface of the liquid inlet barrel, the top of the support frame is connected to the filter membrane, the bottom of the support frame is installed with a mounting sleeve, a turntable is nested in the mounting sleeve, the number of the mounting sleeve and the turntable is set to multiple groups, nozzles are installed through the side of the turntable, the number of the nozzles is set to multiple groups, and the multiple groups of nozzles are arranged in an equiangular circular array on the side of the turntable.

10. The filtering device for metal impurity ions in the carbonylation synthesis of acetic acid catalyst solution according to claim 9, characterized in that: There are guide tubes connected through the multiple groups of turntables, the number of the guide tubes is set to multiple groups, the multiple groups of guide tubes are installed between two adjacent groups of guide tubes, two of the multiple groups of guide tubes are connected through, and a connecting tube is installed at one end of another group of guide tubes in the multiple groups of guide tubes, and the other end of the connecting tube is connected through the bottom surface of the air pipe.

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