BYD production filtering system

Abstract

The utility model discloses a BYD production filtering system which comprises a BYD reactor, a BYD collecting tank, a BYD conveying pump, a coarse filter and a fine filter which are sequentially connected through pipelines, a buffer clarifying tank is arranged at the front end of an inlet of the coarse filter, and the interior of the buffer clarifying tank is divided into a plurality of precipitation cavities through a plurality of step partition plates; the buffer clarification tank is arranged at the front end of the coarse filter, and the precipitation collectors are arranged at the lower parts of the precipitation cavities of the buffer clarification tank, so that the content of a catalyst in a BYD solution entering the coarse filter can be reduced; the problem that the coarse filter is seriously blocked by the catalyst due to instability at the initial stage of production is avoided, and the replacement time of the filter element of the filter is prolonged from three times per day at the initial stage of start-up to one time per two days, so that the labor intensity of replacing the filter element by operators is reduced, the filter element cost is saved, and the stable operation of the whole extraction system is ensured.

Description

Technical Field

[0001] The utility model relates to the field of fine chemical filtration, in particular to a BYD production filtration system. Background Art

[0002] 1,4-Butanediol, referred to as BDO, is an important organic and fine chemical raw material. At present, the acetylene-formaldehyde method accounts for more than 90% of the effective production capacity of BDO in China. The raw materials acetylene and formaldehyde enter the BYD reactor separately, and 1,4-butynediol (BYD) is generated under the action of acetylene copper complex catalyst.

[0003] The BYD liquid generated by the BYD reactor enters the BYD collection tank 2 and is transported to the coarse filter 5 and the fine filter 6 by the BYD delivery pump 3 for filtration (e.g. Figure 6 As shown); however, in the initial stage of starting up or replacing the catalyst in the BYD reactor, due to the instability in the initial stage of production, there are many catalyst impurities contained therein, and these catalyst impurities will enter the coarse filter 5 and the fine filter 6, causing them to be blocked and affecting the operation of the system. Therefore, in order to ensure the operating stability of the coarse filter 5 and the fine filter 6, it is necessary to cyclically replace the filter elements in the coarse filter 5 and the fine filter 6 (3-5 times a day in the first 5 days of starting up). The filter elements of the coarse filter 5 and the fine filter 6 are replaced 400 times a day, which is troublesome and laborious for the operator to replace, and the efficiency is extremely low, and the cost of replacing the filter element is also high. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a BYD production filtration system.

[0005] The utility model is realized through the following technical solutions:

[0006] A BYD production filtration system comprises a BYD reactor, a BYD collecting tank, a BYD delivery pump, a coarse filter and a fine filter which are sequentially connected through pipelines. A buffer clarification tank is arranged at the front end of the coarse filter inlet. The buffer clarification tank is divided into a plurality of sedimentation chambers by a plurality of stepped partitions. A sedimentation collector is arranged at the bottom of each sedimentation chamber.

[0007] Further optionally, a delivery pipeline is connected between the coarse filter inlet and the BYD delivery pump outlet, and the delivery pipeline is provided with a bypass sub-pipe, and a buffer clarification tank and a centrifugal pump are provided on the bypass sub-pipe.

[0008] Further optionally, a filter element is provided at the inlet end of the centrifugal pump, and control valves are installed on the inlet and outlet ends of the bypass auxiliary pipe, the corresponding delivery pipeline, and each pipeline.

[0009] Further optionally, the sedimentation collector comprises a box body movably arranged along the bottom of the sedimentation chamber, a plurality of open collection chambers are arranged in the box body, and a plurality of layers of inclined debris baffles are arranged on the side wall of each collection chamber.

[0010] Further optionally, a maintenance hole facing the sedimentation collector is provided at the lower end of the side wall of the buffer clarification tank, and a maintenance end cover is provided on the outer side of the maintenance hole, and the maintenance end cover is fixed to the maintenance hole by a plurality of screws.

[0011] Further optionally, a drain pipe is provided on the side of the sedimentation chamber, and a control valve is provided on the drain pipe.

[0012] Compared with the existing technology, the beneficial effects of the utility model are as follows: the utility model arranges a buffer clarification tank at the front end of the coarse filter and arranges a sedimentation collector at the lower part of multiple sedimentation chambers of the buffer clarification tank, so as to reduce the content of catalyst in the BYD solution entering the coarse filter, thereby avoiding the serious problem of catalyst clogging the coarse filter due to instability in the early stage of production. The filter element replacement is extended from three times a day in the early stage of start-up to once every two days, which not only reduces the labor intensity of operators in replacing the filter element, but also saves the cost of the filter element, while ensuring the stable operation of the entire extraction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model system;

[0014] Figure 2 yes Figure 1 A schematic enlarged view of the local structure in FIG.

[0015] Figure 3 A schematic diagram of the structure of the practical sedimentation collector;

[0016] Figure 4 This is a cross-sectional view of the collection chamber of the present invention;

[0017] Figure 5 This is a schematic diagram of the installation of the practical maintenance end cover;

[0018] Figure 6 It is a system diagram of the prior art of this utility;

[0019] In the figure: BYD reactor 1, BYD collecting tank 2, BYD delivery pump 3, delivery pipeline 4, coarse filter 5, fine filter 6, bypass auxiliary pipe 7, buffer clarification tank 8, maintenance end cover 801, drain pipe 802, partition 9, sedimentation chamber 10, sedimentation collector 11, box 12, collection chamber 13, inclined debris baffle 14, centrifugal pump 15, filter element 16, drain pipe 17, control valve 18. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0021] like Figure 1 As shown, a BYD production filtration system includes a BYD reactor 1, a BYD collecting tank 2, a BYD delivery pump 3, a coarse filter 5 and a fine filter 6 which are sequentially connected through pipelines. A buffer clarification tank 8 is arranged at the front end of the inlet of the coarse filter 5. The buffer clarification tank 8 is divided into a plurality of sedimentation chambers 10 by a plurality of stepped partitions 9. A sedimentation collector 11 is arranged at the bottom of each sedimentation chamber 10.

[0022] like Figure 1 As shown, a delivery pipeline 4 is connected between the inlet of the coarse filter 5 and the outlet of the BYD delivery pump 3 , and the delivery pipeline 4 is provided with a bypass sub-pipe 7 , and a buffer clarification tank 8 and a centrifugal pump 15 are provided on the bypass sub-pipe 7 .

[0023] like Figure 1 As shown, a filter core 16 is provided at the inlet end of the centrifugal pump 15, and control valves 18 are installed at the inlet and outlet ends of the bypass secondary pipe 7 and the corresponding delivery pipeline 4 as well as on each pipeline.

[0024] like Figure 2 , 3 As shown in FIG. 4 , the sedimentation collector 11 includes a box body 12 movably arranged along the bottom of the sedimentation chamber 10, a plurality of open collection chambers 13 are arranged in the box body 12, and a plurality of inclined debris baffles are arranged on the side wall of each collection chamber 13.

[0025] like Figure 5 As shown, a maintenance hole facing the sedimentation collector 11 is arranged at the lower end of the side wall of the buffer clarification tank 8, and a maintenance end cover 801 is arranged on the outside of the maintenance hole. The maintenance end cover 801 is fixed to the maintenance hole by a plurality of screws.

[0026] like Figure 2 As shown, a drain pipe 802 is provided on the side of the sedimentation chamber 10 , and a control valve 18 is provided on the drain pipe 802 .

[0027] The implementation principle of a BYD production filtration system in the embodiment of the present application is:

[0028] The raw materials acetylene and formaldehyde enter the BYD reactor respectively, and 1, 4-butynediol (BYD) is generated under the action of acetylene copper complex catalyst. BYD liquid enters BYD collecting tank 2 for collection and is pressurized by BYD delivery pump 3 and delivered to buffer clarification tank 8 along bypass auxiliary pipe 7 (the control valve 18 on the delivery pipeline 4 is closed, and the control valve 18 on the bypass auxiliary pipe 7 is opened);

[0029] The BYD liquid entering the buffer clarification tank 8 passes through the multi-stage overflow sedimentation of the sedimentation chamber 10 separated by multiple partitions 9, and most of the impurities in the BYD liquid are precipitated downward into the sedimentation collector 11 at the bottom of the sedimentation chamber 10, and are collected by multiple collection chambers 13 of the sedimentation collector 11. In each collection chamber 13, a multi-layer inclined inclined impurity baffle 14 is arranged to prevent the BYD liquid overflowing from the sedimentation chamber 10 from disturbing the impurities in the collection chamber 13. The inclined impurity baffle 14 plays a role in blocking the upward movement of impurities deposited in the collection chamber 13, thereby ensuring that the impurities entering the BYD liquid are not disturbed by the BYD liquid overflowing from the sedimentation chamber 10. The cleanliness of BYD liquid by centrifugal pump 15 is improved. After multi-stage precipitation, BYD liquid is transported to coarse filter 5 and fine filter 6 for filtering by centrifugal pump 15, which greatly reduces the content of BYD liquid impurities entering coarse filter 5 and fine filter 6, avoiding the serious problem of impurity blockage of coarse filter 5 and fine filter 6 due to instability in the early stage of production. The filter element replacement of coarse filter 5 and fine filter 6 is extended from three times a day in the early stage of driving to once every two days, which not only reduces the labor intensity of operators to replace filter elements, but also saves filter element costs to ensure the stable operation of the entire system;

[0030] When the collection chamber 13 of the sedimentation collector 11 is running stably at the initial start-up and there are many impurities, the control valve 18 on the conveying pipeline 4 can be opened, and the control valve 18 at the inlet and outlet of the buffer clarification tank 8 on the bypass sub-pipe 7 can be closed to switch the buffer clarification tank 8 to a shutdown state, open the control valve on the side drain pipe 802 of the corresponding sedimentation chamber 10, drain the liquid in the sedimentation chamber 10, open the maintenance end cover 801, draw out the box 12 of the sedimentation collector 11 for cleaning to remove impurities, and then restore it after removal to realize the standby of the buffer clarification tank 8.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A BYD production filtration system, comprising a BYD reactor (1), a BYD collecting tank (2), a BYD delivery pump (3), a coarse filter (5) and a fine filter (6) connected in sequence through pipelines, characterized in that: A buffer clarification tank (8) is provided at the front end of the inlet of the coarse filter (5), and the buffer clarification tank (8) is divided into a plurality of sedimentation chambers (10) by a plurality of stepped partitions (9), and a sedimentation collector (11) is provided at the bottom of each sedimentation chamber (10).

2. A BYD production filtration system according to claim 1, characterized in that: A delivery pipeline (4) is connected between the inlet of the coarse filter (5) and the outlet of the BYD delivery pump (3), and the delivery pipeline (4) is provided with a bypass sub-pipe (7), and a buffer clarification tank (8) and a centrifugal pump (15) are provided on the bypass sub-pipe (7).

3. A BYD production filtration system according to claim 2, characterized in that: The inlet end of the centrifugal pump (15) is provided with a filter core (16), and the inlet and outlet ends of the bypass auxiliary pipe (7) and the corresponding delivery pipeline (4) as well as each pipeline are installed with a control valve (18).

4. A BYD production filtration system according to claim 1, characterized in that: The sedimentation collector (11) comprises a box (12) movably arranged along the bottom of the sedimentation chamber (10), a plurality of open collection chambers (13) are arranged in the box (12), and a plurality of inclined debris baffles are arranged on the side wall of each collection chamber (13).

5. A BYD production filtration system according to claim 2, characterized in that: A maintenance hole facing the sedimentation collector (11) is provided at the lower end of the side wall of the buffer clarification tank (8), and a maintenance end cover (801) is provided on the outside of the maintenance hole. The maintenance end cover (801) is fixed to the maintenance hole by a plurality of screws.

6. A BYD production filtration system according to claim 4, characterized in that: A liquid discharge pipe (802) is provided on the side of the sedimentation chamber (10), and a control valve (18) is provided on the liquid discharge pipe (802).

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