BYD catalyst treatment system

Abstract

The utility model discloses a BYD catalyst treatment system which comprises a first-stage settling tank, a supernatant pipe of the first-stage settling tank is communicated with a second-stage settling tank, a supernatant pipe of the second-stage settling tank is communicated with a third-stage settling tank, a supernatant pipe of the third-stage settling tank is communicated with a supernatant recovery tank, and the supernatant recovery tank is communicated with a second-stage settling tank. A centrifugal pump is mounted on a supernatant pipe of the third-stage settling tank; the device disclosed by the utility model has the beneficial effects that a catalyst can be effectively settled, filtered and recycled through the three stages of settling tanks, and meanwhile, the filtering cost input of the waste catalyst is also reduced; the consumption of a large amount of desalted water caused by an original filtering mode is further avoided, and resources are protected from being wasted.

Description

Technical Field:

[0001] The utility model belongs to the chemical industry field, and particularly relates to a BYD catalyst treatment system. Background Art:

[0002] BDO is the abbreviation of 1,4 - butanediol (Butane - 1,4 - diol), also known as 1,4 - dihydroxybutane or butylene glycol.

[0003] In the production process of BDO by the alkyne - aldehyde method, the BYD catalyst is used, which is mainly used to promote chemical reactions and improve production efficiency. During the use of the catalyst, certain impurities and metal ions will accumulate. These impurities and metal ions may affect the activity and stability of the catalyst, and then affect the production efficiency and product quality of 1,4 - butanediol. Therefore, the BYD catalyst generally needs to be replaced every 60 - 90 days. The waste catalyst needs to be filtered to effectively remove these impurities, restore the activity of the catalyst, and ensure the stable operation of the production system. In the prior art, a large number of cluster filters are usually used for filtering the waste catalyst. Although this filtering method is efficient, the filter cloth is easily damaged during the back - blowing cleaning process, resulting in a relatively high cost investment for the filtering treatment of the waste catalyst, and a large amount of demineralized water is consumed during the back - flushing process, causing waste of resources. Content of the Utility Model:

[0004] The purpose of the utility model is to provide a BYD catalyst treatment system, which overcomes the above - mentioned deficiencies of the prior art and effectively solves the existing problem of relatively high cost investment in the traditional filtering treatment of waste catalysts.

[0005] The content of the utility model: A BYD catalyst treatment system includes a primary settling tank. The supernatant pipe of the primary settling tank is communicated with a secondary settling tank. The supernatant pipe of the secondary settling tank is communicated with a tertiary settling tank. The supernatant pipe of the tertiary settling tank is communicated with a clear liquid recovery tank. A centrifugal pump is installed on the supernatant pipe of the tertiary settling tank.

[0006] Further, the output end of the supernatant pipe of the tertiary settling tank is communicated with a filter. The output pipe of the filter is communicated with the clear liquid recovery tank.

[0007] Further, a differential pressure sensor is installed between the input end and the output end of the filter.

[0008] Further, the sediment recovery pipes of the primary settling tank, the secondary settling tank, and the tertiary settling tank are all communicated with a main recovery pipe. The output end of the main recovery pipe is communicated with a sediment recovery tank.

[0009] Advantages of the present utility model: The three-stage sedimentation tank can effectively sediment and filter the catalyst for recovery, and at the same time, it reduces the input cost of filtering waste catalysts; further avoiding the large consumption of desalted water caused by the original filtering method and protecting resources from being wasted. Brief description of the drawings:

[0010] Figure 1 It is a system schematic diagram of the present utility model;

[0011] In the figure: 1 primary sedimentation tank, 2 secondary sedimentation tank, 3 tertiary sedimentation tank, 4 clear liquid recovery tank, 5 centrifugal pump, 6 filter, 7 differential pressure sensor, 8 main recovery pipe, 9 sediment recovery tank. Specific implementation manner:

[0012] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manner of the present utility model will now be described with reference to the accompanying drawings:

[0013] As Figure 1 shown, a BYD catalyst treatment system includes a primary sedimentation tank 1. The supernatant pipe of the primary sedimentation tank 1 is communicated with the secondary sedimentation tank 2. The supernatant pipe of the secondary sedimentation tank 2 is communicated with the tertiary sedimentation tank 3. The supernatant pipe of the tertiary sedimentation tank 3 is communicated with the clear liquid recovery tank 4. A centrifugal pump 5 is installed on the supernatant pipe of the tertiary sedimentation tank 3. The output end of the supernatant pipe of the tertiary sedimentation tank 3 is communicated with the filter 6. The output pipe of the filter 6 is communicated with the clear liquid recovery tank 4. A differential pressure sensor 7 is installed between the input end and the output end of the filter 6. The sediment recovery pipes of the primary sedimentation tank 1, the secondary sedimentation tank 2, and the tertiary sedimentation tank 3 are all communicated with the main recovery pipe 8. The output end of the main recovery pipe 8 is communicated with the sediment recovery tank 9.

[0014] Specifically, the three-stage sedimentation tank can effectively sediment and filter the catalyst, and at the same time, it reduces the cost input.

[0015] During actual use, the waste catalyst is first transported through a pipeline to the first-stage sedimentation tank 1 for initial sedimentation. After static sedimentation for 5 days, the valve of the supernatant pipe of the first-stage sedimentation tank 1 is opened, and the supernatant generated after the initial sedimentation flows into the second-stage sedimentation tank 2 for intermediate sedimentation. After static sedimentation for 3 days, the valve of the supernatant pipe of the second-stage sedimentation tank 2 is opened, and the supernatant after the intermediate sedimentation flows into the third-stage sedimentation tank 3 for final sedimentation. Under the pressure of the centrifugal pump 5, the supernatant after sedimentation in the third-stage sedimentation tank 3 is transported to the filter 6. The filter 6 further intercepts the trace impurities remaining in the supernatant. Finally, the filter 6 transports the supernatant to the clean liquid recovery tank 4 for temporary storage and waits to be transported back to the production system for reuse; during the initial sedimentation process, new waste catalyst will be continuously replenished into the first-stage sedimentation tank 1 so that the system can operate in a cycle;

[0016] When the filtration efficiency of the filter 6 decreases, the differential pressure sensor 7 will monitor the differential pressure between the input end and the output end of the filter 6 and give an alarm, thus reminding the staff to clean the filter 6;

[0017] When a large amount of sediment accumulates at the bottom of the first-stage sedimentation tank 1, the second-stage sedimentation tank 2, and the third-stage sedimentation tank 3 after being used for a period of time, the valve of the corresponding sediment recovery pipe is opened at this time, and the sediment converges into the main recovery pipe 8 and finally flows into the sediment recovery tank 9 for temporary storage;

[0018] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A BYD catalyst treatment system, characterized in that: It includes a primary sedimentation tank (1), the supernatant pipe of the primary sedimentation tank (1) is communicated with a secondary sedimentation tank (2), the supernatant pipe of the secondary sedimentation tank (2) is communicated with a tertiary sedimentation tank (3), the supernatant pipe of the tertiary sedimentation tank (3) is communicated with a clear liquid recovery tank (4), and a centrifugal pump (5) is installed on the supernatant pipe of the tertiary sedimentation tank (3).

2. The BYD catalyst treatment system according to claim 1, wherein: The output end of the supernatant pipe of the tertiary sedimentation tank (3) is communicated with a filter (6), and the output pipe of the filter (6) is communicated with the clear liquid recovery tank (4).

3. The BYD catalyst treatment system according to claim 2, characterized in that: A differential pressure sensor (7) is installed between the input end and the output end of the filter (6).

4. The BYD catalyst treatment system according to claim 1, wherein: The sediment recovery pipes of the primary sedimentation tank (1), the secondary sedimentation tank (2) and the tertiary sedimentation tank (3) are all communicated with a main recovery pipe (8), and the output end of the main recovery pipe (8) is communicated with a sediment recovery tank (9).

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