CN216457272U - Filtering system for removing particle impurities from slurry - Google Patents
Filtering system for removing particle impurities from slurry Download PDFInfo
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- CN216457272U CN216457272U CN202122888214.5U CN202122888214U CN216457272U CN 216457272 U CN216457272 U CN 216457272U CN 202122888214 U CN202122888214 U CN 202122888214U CN 216457272 U CN216457272 U CN 216457272U
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Abstract
The utility model relates to a filtering system for removing particle impurities from slurry, which comprises at least one filter and a PLC (programmable logic controller) control module, wherein the filter is a vertical pressure container independently arranged outside a BYD reactor and comprises a shell and a plurality of groups of cluster type filtering elements; the device comprises a shell, a plurality of groups of cluster filter elements, a PLC control module and a control module, wherein the cluster filter elements are uniformly arranged inside the shell along the direction parallel to a vertical central shaft of the shell, each group of cluster filter elements are respectively provided with a feeding pipeline communicated with a supply end of slurry containing particle impurities and an output pipeline for outputting materials to the outside of the shell, valves are respectively arranged on the feeding pipeline and the output pipeline, the valves on each group of feeding pipeline and output pipeline are respectively connected with the PLC control module, and the PLC control module adjusts the opening and closing of each group of valves to select different feeding and discharging routes; the bottom of the shell is provided with a filter cake discharge port which is controlled to be opened and closed by a valve. The filtering system can be cleaned on line, parking is reduced, the strength requirement of the filtering element is not high, the cost can be reduced, and the enterprise benefit is improved.
Description
Technical Field
The utility model relates to the technical field of industrial synthesis of 1, 4-butynediol, in particular to a filtering system for removing particle impurities from slurry.
Background
With the development of the technology, a three-phase slurry reactor is widely applied to the chemical production of 1, 4-Butynediol (BYD), and a three-phase slurry reactor (hereinafter, referred to as BYD reactor) is usually filled with a fine-particle catalyst, so that the reaction temperature can be uniformly controlled, the reaction heat can be removed, and the good contact of three phases of gas, liquid and solid can be conveniently achieved. Therefore, the fine catalyst in the three-phase slurry reactor is suspended in the liquid, and how to remove the fine catalyst in the slurry liquid after the reaction to obtain the pure BYD filtrate has a crucial influence on the subsequent process operation, which is an important issue generally paid attention by technical developers.
The filtration device commonly used in the prior art is a candle filter disposed in a three-phase slurry reactor, and although on-line cleaning can be achieved, when the outer surface of the catalyst is coated with organic matter and adhered together, the reactor must be shut down to replace the catalyst. In addition, the on-line cleaning of the candle filter is realized by frequent back flushing for 1-2 minutes, and the operation mode has high requirements on the strength of the filter element and high production cost.
In view of the foregoing, there is a need for a filtration system that is cost effective, easy to clean on-line, and does not require frequent stops.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the defects, the utility model provides a filtering system which can be matched with a BYD reactor without a filtering device inside, the filtering system not only can realize online cleaning and reduce parking, but also has low requirement on the strength of a filtering element, can reduce the purchasing cost of the device, and further comprehensively improves the overall benefit of an enterprise.
The basic concept of the technical scheme adopted by the utility model is as follows:
a filtering system for removing particle impurities from slurry comprises at least one filter and a PLC (programmable logic controller) control module, wherein the filter is a vertical pressure vessel independently arranged outside a BYD (BYD) reactor and comprises a shell and a plurality of groups of cluster type filtering elements;
the plurality of groups of cluster filter elements are uniformly arranged inside the shell along the direction parallel to the vertical central axis of the shell, each group of cluster filter elements is respectively provided with a feeding pipeline communicated with a supply end of slurry containing particle impurities and an output pipeline for outputting materials to the outside of the shell, valves are respectively arranged on the feeding pipeline and the output pipeline, the valves on each group of feeding pipeline and the output pipeline are respectively connected with the PLC control module, and the PLC control module adjusts the opening and closing of each group of valves to select different feeding and discharging routes;
and a filter cake discharge port which is controlled to be opened and closed by a valve is arranged at the bottom of the shell.
As a mode, the filtering system further comprises an intelligent backwashing unit, the intelligent backwashing unit comprises a backwashing pipeline communicated with the positions of the cluster filtering elements for depositing the particle impurities and the filter cake discharge port, a valve arranged on the backwashing pipeline is connected with the PLC control module, and receives an instruction of the PLC control module to control opening and closing so as to selectively introduce a purging gas source or a flushing liquid to the positions of the cluster filtering elements for depositing the particle impurities.
As one mode, the backwashing pipeline comprises a first backwashing pipeline and a second backwashing pipeline which are arranged in parallel; a nitrogen tank and a valve are arranged on the first backwashing pipeline, a sealing tank and a valve are arranged on the second backwashing pipeline, and the sealing tank is used for containing BYD filtrate from which particle impurities are filtered;
the valves on the first backwashing pipeline and the second backwashing pipeline are respectively connected with the PLC control module and receive instructions of the PLC control module to control the opening and closing states, and at least one of the first backwashing pipeline and the second backwashing pipeline is controlled to keep a passage state when intelligent backwashing needs to be executed.
As one way, the inlet of the seal pot is connected to the BYD filtrate outlet of the filter or to a line that delivers BYD filtrate to the formaldehyde removal column to control make-up BYD filtrate.
As a mode, the filtering system is further provided with a protective gas pipeline, wherein the gas inlet end of the protective gas pipeline is connected with an acetylene gas source, and the gas outlet end of the protective gas pipeline is connected with a gas distributor arranged in the shell of the filter.
As a mode, the gas inlet end of the protective gas pipeline is connected with the acetylene gas output end of the BYD reactor, and the gas distributor is arranged below the cluster filter element.
As a mode, the cluster type filter element comprises a plurality of filter cores, each filter core comprises filter cloth and a support framework, each support framework is a steel pipe with a hollow structure, and the filter cloth is detachably arranged on the steel pipe and covers the hollow structures.
As a mode, the filter cloth is a hollow cylindrical structure, the diameter of the bottom surface of the cylindrical structure is 50-125 mm, the height of the cylindrical structure is 1-2 m, and the filtering precision is 0.5-10 um.
As a mode, one bottom end of the filter cloth is in threaded connection with the supporting framework, and the other bottom end of the filter cloth is movably connected with the supporting framework in a sleeved mode and sealed through a sealing cover.
As a mode, the bottom of the shell is provided with the filter cake discharge port, and the filter cake discharge port is provided with a DN 150-200 ball valve and an N connected with the PLC control module2Water flushing of the pipeline, N2Valve arranged on water flushing pipeline receives instruction of PLC control module to selectively spray N2Or water flushes the filter cake discharge port.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
1. the filtering system is independently arranged outside the reactor, an external and independent circulating filtering operation mode is adopted, the catalyst does not need to be cut off and replaced independently when the reactor is stopped, and the long-period stable operation can be realized.
2. The filtering system of the utility model carries out back flushing cleaning after being cut off independently, has low requirement on the strength of the internal filtering element, has little damage and low production cost.
3. The utility model solves the problems of high filtering cost and large workload in the process of removing fine particles from reaction slurry, and improves the stability of production operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a filtration system for removing particulate impurities from a slurry according to the present invention.
FIG. 2 is a schematic diagram of the filter and a portion of the piping arrangement shown in FIG. 1.
Fig. 3 is a transverse cross-sectional view of fig. 2.
The labels in the figure are: 1-a filter; 11-a housing; 12-a clustered filter element; 121-a filter element; 13-a gas distributor; 2-sealing the tank; 3-nitrogen tank; 4-spent catalyst pot; 5-a delivery pump; p1, P2-pressure gauge.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a filtering system for removing particulate impurities from slurry is shown as an example, and comprises at least one filter 1 and a PLC control module, wherein the filter 1 is a vertical pressure vessel independently arranged outside a BYD reactor and comprises a shell 11 and a plurality of groups of cluster-type filtering elements 12;
the groups of cluster filter elements 12 are uniformly arranged inside the shell 11 along a direction parallel to a vertical central axis of the shell 11, each group of cluster filter elements 12 is respectively provided with a feeding pipeline communicated with a supply end of slurry containing particle impurities and an output pipeline for outputting materials to the outside of the shell 11, valves are respectively arranged on the feeding pipeline and the output pipeline, the valves on each group of feeding pipeline and the output pipeline are respectively connected with the PLC control module, and the PLC control module adjusts the opening and closing of each group of valves to select different feeding and discharging routes;
and a filter cake discharge port which is controlled to be opened and closed by a valve is arranged at the bottom of the shell 11.
As an application case, the filtration system of the present invention is used in conjunction with a BYD reactor in which no filtration device is provided.
As one mode, the slurry containing the particulate impurities is circulated and filtered by a filter system to which the slurry containing the particulate impurities is fed by a low-friction type feed pump 5.
The specific number of filters 1 may be set to 1 or a plurality of filters 1 in series, for example, four filters 1 are provided in series.
As shown in fig. 1 to 3, as one mode, the filtration system further includes an intelligent backwashing unit, the intelligent backwashing unit includes a backwashing pipeline communicated with the portion of each cluster filter element 12 where the particulate impurities are deposited and the filter cake discharge port, a valve provided on the backwashing pipeline is connected with the PLC control module, and receives an instruction of the PLC control module to control opening and closing so as to selectively introduce a purging gas source or a flushing liquid to the portion of each cluster filter element 12 where the particulate impurities are deposited.
As shown in fig. 1, the backwash line preferably comprises a first backwash line and a second backwash line arranged in parallel; a nitrogen tank 3 and a valve are arranged on the first backwashing pipeline, a sealing tank 2 and a valve are arranged on the second backwashing pipeline, and the sealing tank 2 is used for containing BYD filtrate from which particle impurities are filtered;
the valves on the first backwashing pipeline and the second backwashing pipeline are respectively connected with the PLC control module and receive instructions of the PLC control module to control the opening and closing states, and at least one of the first backwashing pipeline and the second backwashing pipeline is controlled to keep a passage state when intelligent backwashing needs to be executed.
The back flushing pipeline of the utility model can ensure that the filtering system can safely and reliably execute back flushing in various states, and is flexible.
As a way, the inlet of the seal pot 2 is connected with the BYD filtrate outlet of the filter 1 or with a pipeline for delivering BYD filtrate to the formaldehyde removal column to control the supplement of BYD filtrate.
The sealed tank 2 is arranged, pressure can be applied to the sealed tank 2 through nitrogen output by the nitrogen tank 3, clean BYD filtrate in the sealed tank is conveyed to the shell 11 of the filter 1 along the second backwashing pipeline to flush deposited particle impurities, the filtrate can be conveniently supplemented to the sealed tank 2 through valve control, and the device is saved.
As a mode, the filtering system is further provided with a protective gas pipeline, wherein a gas inlet end of the protective gas pipeline is connected with an acetylene gas source, and a gas outlet end of the protective gas pipeline is connected with a gas distributor 13 arranged in the shell 11 of the filter 1.
As one mode, the gas inlet end of the protective gas pipeline is connected with the acetylene gas output end of the BYD reactor, and the gas distributor 13 is arranged below the cluster filter element 12.
The inside supplementary reaction gaseous phase of reaction raw materials acetylene gas by the BYD reactor to filter 1 carries out the deep reaction, can form the air current tympanic bulla simultaneously on the surface of beam-concentrating filter element 12, avoid particulate impurities (being the catalyst of BYD reaction) to form thicker catalyst filter cake on the surface of beam-concentrating filter element 12, influence filtering quality, in addition, the acetylene gas that lets in can also get into the reactor along with slurry circulation and carry out recycle, need not extravagant extra material, and the cost is saved, multiple functions.
As a mode, the cluster filter element 12 includes a plurality of filter cores 121, each filter core 121 includes a filter cloth and a support frame, each support frame is a steel pipe with a hollow structure, and the filter cloth is detachably disposed on the steel pipe and covers the hollow structure.
As a mode, the filter cloth is a hollow cylindrical structure, the diameter of the bottom surface of the cylindrical structure is 50-125 mm, the height of the cylindrical structure is 1-2 m, and the filtering precision is 0.5-10 um.
As a mode, one bottom end of the filter cloth is in threaded connection with the supporting framework, and the other bottom end of the filter cloth is movably connected with the supporting framework in a sleeved mode and sealed through a sealing cover.
The structure of foretell filter element helps improving the filter effect, avoids particulate impurities to remain in the filtrating, and then when realizing that BYD reactor is inside to go the filter ization, can also reduce smart filter equipment's use, further reduce cost.
As a mode, the bottom of the shell 11 is provided with the filter cake discharge port, and the filter cake discharge port is provided with a DN 150-200 ball valve and an N connected with the PLC control module2Water flushing of the pipeline, N2Valve arranged on water flushing pipeline receives instruction of PLC control module to selectively spray N2Or water flushes the filter cake discharge port.
The filter cake discharging port can ensure that the filter cake can be smoothly discharged, and the filter effect is prevented from being influenced by blockage or residue in the filter 1.
As shown in fig. 2, the housing 11 includes an elliptical head at the top and a cylinder below the elliptical head, the elliptical head is provided with an exhaust port and a safety valve, and the elliptical head is connected with the cylinder through a flange. The slurry extraction pipeline, the filtrate extraction pipeline and the back flushing relation are connected and pressure is adjusted through pipelines provided with pressure gauges P1 and P2.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A filtering system for removing particle impurities from slurry comprises at least one filter and a PLC (programmable logic controller) control module, and is characterized in that the filter is a vertical pressure vessel independently arranged outside a BYD (BYD) reactor and comprises a shell and a plurality of groups of cluster type filtering elements;
the plurality of groups of cluster filter elements are uniformly arranged inside the shell along the direction parallel to the vertical central axis of the shell, each group of cluster filter elements is respectively provided with a feeding pipeline communicated with a supply end of slurry containing particle impurities and an output pipeline for outputting materials to the outside of the shell, valves are respectively arranged on the feeding pipeline and the output pipeline, the valves on each group of feeding pipeline and the output pipeline are respectively connected with the PLC control module, and the PLC control module adjusts the opening and closing of each group of valves to select different feeding and discharging routes;
and a filter cake discharge port which is controlled to be opened and closed by a valve is arranged at the bottom of the shell.
2. The system of claim 1, further comprising an intelligent backwashing unit, wherein the intelligent backwashing unit comprises a backwashing pipeline communicated with the portion of each cluster filter element where the particle impurities are deposited and the filter cake discharge port, a valve arranged on the backwashing pipeline is connected with the PLC control module and receives a command from the PLC control module to control opening and closing so as to selectively introduce a purging gas source or a flushing liquid to the portion of each cluster filter element where the particle impurities are deposited.
3. The system of claim 2, wherein the backwash line comprises a first backwash line and a second backwash line arranged in parallel; a nitrogen tank and a valve are arranged on the first backwashing pipeline, a sealing tank and a valve are arranged on the second backwashing pipeline, and the sealing tank is used for containing BYD filtrate from which particle impurities are filtered;
the valves on the first backwashing pipeline and the second backwashing pipeline are respectively connected with the PLC control module and receive instructions of the PLC control module to control the opening and closing states, and at least one of the first backwashing pipeline and the second backwashing pipeline is controlled to keep a passage state when intelligent backwashing needs to be executed.
4. A filtration system for particulate contamination of a slurry as claimed in claim 3 wherein the inlet of the seal pot is connected to the BYD filtrate outlet of the filter or to a line delivering BYD filtrate to a formaldehyde removal column to control make-up BYD filtrate.
5. The system of claim 1, wherein the filter system further comprises a protective gas line, the gas inlet end of the protective gas line is connected to the acetylene gas source, and the gas outlet end of the protective gas line is connected to a gas distributor disposed in the filter housing.
6. The system of claim 5, wherein the gas inlet of the shielding gas line is connected to the acetylene gas outlet of the BYD reactor, and the gas distributor is disposed below the cluster filter element.
7. The system according to any one of claims 1 to 6, wherein the cluster filter element comprises a plurality of filter elements, each filter element comprises a filter cloth and a support frame, each support frame is a steel tube with a hollow structure, and the filter cloth is detachably arranged on the steel tube and covers the hollow structure.
8. The filtering system for removing particle impurities in slurry according to claim 7, wherein the filter cloth is a hollow cylindrical structure, the diameter of the bottom surface of the cylindrical structure is 50-125 mm, the height of the cylindrical structure is 1-2 m, and the filtering precision is 0.5-10 um.
9. The system of claim 8, wherein the filter cloth is threaded at one end to the support frame and is movably coupled at the other end to the support frame and sealed by a sealing cap.
10. The filtering system for removing particle impurities from slurry according to claim 7, wherein the filter cake discharge port is arranged at the bottom of the shell and is provided with a DN 150-200 ball valve and an N connected with the PLC control module2Water flushing of the pipeline, N2Valve arranged on water flushing pipeline receives instruction of PLC control module to selectively spray N2Or water flushes the filter cake discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122888214.5U CN216457272U (en) | 2021-11-23 | 2021-11-23 | Filtering system for removing particle impurities from slurry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122888214.5U CN216457272U (en) | 2021-11-23 | 2021-11-23 | Filtering system for removing particle impurities from slurry |
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| CN216457272U true CN216457272U (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116808681A (en) * | 2023-08-30 | 2023-09-29 | 张家港市华昌新材料科技有限公司 | Automatic back flushing filtering device, production system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116808681A (en) * | 2023-08-30 | 2023-09-29 | 张家港市华昌新材料科技有限公司 | Automatic back flushing filtering device, production system and method |
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