Water-saving washing system for chlorfenapyr preparation

Abstract

The utility model discloses a water-saving washing system for chlorfenapyr preparation, which comprises a first washing kettle, a second washing kettle, a recovery kettle and a purification kettle, and a transfer pipe and a transfer water pipe are arranged between the first washing kettle and the second washing kettle; an outlet is formed in the bottom of the first washing kettle, a first tee joint is installed at the outlet, a side port of the first tee joint is connected with the bottom end of a material transferring pipe, and the top end of the material transferring pipe is connected with a feeding port in the top of the second washing kettle; an outlet is formed in the bottom of the second washing kettle, a second tee joint is installed at the outlet, a side port of the second tee joint is connected with the bottom end of a transfer water pipe, and the top end of the transfer water pipe is connected with the water inlet connector of the first washing kettle. According to the washing system provided by the utility model, the materials to be washed can sequentially enter the washing kettles to be washed, a continuous washing process is realized, the washing process is sufficient, and a water layer in the subsequent washing kettle can be used as washing water of the previous washing kettle, so that the use amount of the washing water is reduced.

Description

Technical Field

[0001] The utility model relates to a water-saving water washing system for the preparation of chlorfenapyr, belonging to the technical field of water washing equipment. Background Art

[0002] Chlorfenapyr, also known as bromfenapyr, is a white crystalline powder, an efficient and low-toxic insecticide, with both stomach toxicity and contact toxicity. Using raw materials bromopyrrole nitrile and chloromethyl ethyl ether, with toluene as a solvent and triethylamine as an acid-binding agent, a condensation reaction occurs. The condensation product is successively washed with water, purified, distilled, crystallized, centrifuged, and dried to obtain the finished product of chlorfenapyr.

[0003] At present, the condensation product is mostly separated by the way of water washing and stratification. The water washing process generally adopts the way of multiple water washings in a single water washing kettle. The following technical problems exist in the use of this water washing method:

[0004] Multiple water washings result in a large amount of washing water consumption and a large amount of wastewater generated, which exacerbates the difficulty of wastewater treatment; non-continuous water washing and a long water washing time will lead to a long production cycle of the product.

[0005] To sum up, the existing technology obviously has inconveniences and defects in actual use, so it is necessary to improve. Content of the Utility Model

[0006] Aiming at the deficiencies in the background art, the utility model provides a water-saving water washing system for the preparation of chlorfenapyr, which can enable the material to be washed to enter each water washing kettle in turn for washing, realize a continuous water washing process, make the water washing process sufficient, and the water layer in the subsequent water washing kettle can be used as the washing water for the previous water washing kettle, reducing the consumption of washing water.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The water-saving water washing system for the preparation of chlorfenapyr includes a first water washing kettle, a second water washing kettle, a recovery kettle and a purification kettle. The tops of the first water washing kettle and the second water washing kettle are both provided with a feed inlet and a water inlet joint; a transfer pipe and a transfer water pipe are arranged between the first water washing kettle and the second water washing kettle; the bottom of the first water washing kettle is provided with an outlet, and a first three-way joint is installed at the outlet. The side port of the first three-way joint is connected to the bottom end of the transfer pipe, and the top end of the transfer pipe is connected to the feed inlet at the top of the second water washing kettle; the bottom of the second water washing kettle is provided with an outlet, and a second three-way joint is installed at the outlet. The side port of the second three-way joint is connected to the bottom end of the transfer water pipe, and the top end of the transfer water pipe is connected to the water inlet joint of the first water washing kettle.

[0009] Further, a transfer pump is installed on the transfer pipe, and a transfer water pump is installed on the transfer water pipe.

[0010] Further, the bottom port of the first three-way connection is connected to the top end of the wastewater outlet pipe, and the bottom end of the wastewater outlet pipe is connected to the top of the recovery kettle.

[0011] Further, the bottom port of the second three-way connection is connected to the top end of the discharge pipe, and the bottom end of the discharge pipe is connected to the top of the purification kettle.

[0012] Further, a stirring mechanism is provided inside both the first water washing kettle and the second water washing kettle.

[0013] Further, jacket for heat exchange is provided outside both the first water washing kettle and the second water washing kettle.

[0014] Further, a spray pipe with a ring structure is provided at the top of the inner cavity of both the first water washing kettle and the second water washing kettle. The spray pipe is connected to the water inlet joint, and the inner cavities of the two are connected.

[0015] Further, the water inlet joint at the top of the second water washing kettle is connected to the water inlet pipe, and a water inlet pump is installed on the water inlet pipe.

[0016] After the present utility model adopts the above technical solutions, compared with the prior art, it has the following advantages:

[0017] The material to be washed first enters the first water washing kettle for washing, and then enters the second water washing kettle for washing under the action of the transfer pipe and the transfer pump. After the washing is completed, it enters the purification kettle through the discharge pipe for purification; the washing water is first pumped into the second water washing kettle, and then pumped into the first water washing kettle under the action of the transfer water pipe and the transfer water pump. Finally, the washing wastewater enters the recovery kettle through the wastewater outlet pipe for the recovery of triethylamine.

[0018] In the present utility model, the material to be washed sequentially enters the first water washing kettle and the second water washing kettle for washing, realizing a continuous water washing process, making the water washing process sufficient, and the water layer in the second water washing kettle can be used as the washing water for the first water washing kettle, reducing the consumption of washing water.

[0019] The present utility model will be described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic connection diagram of the first water washing kettle and the second water washing kettle.

[0022] In the figure, 1 is the first water washing kettle, 2 is the second water washing kettle, 3 is the recovery kettle, 4 is the purification kettle, 5 is the feed inlet, 6 is the water inlet joint, 7 is the spray pipe, 8 is the jacket, 9 is the stirring mechanism, 10 is the transfer pipe, 11 is the transfer pump, 12 is the intermediate water pipe, 13 is the intermediate water pump, 14 is the water inlet pipe, 15 is the water inlet pump, 16 is the first three-way joint, 17 is the second three-way joint, 18 is the discharge pipe, and 19 is the waste water discharge pipe. Detailed implementation mode

[0023] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation mode of the present utility model will now be described with reference to the accompanying drawings.

[0024] As Figure 1 and Figure 2 collectively shown, the present utility model provides a water-saving water washing system for the preparation of chlorfenapyr, which includes a first water washing kettle 1, a second water washing kettle 2, a recovery kettle 3, and a purification kettle 4.

[0025] The tops of the first water washing kettle 1 and the second water washing kettle 2 are both provided with a feed inlet 5 and a water inlet joint 6. The interiors of the first water washing kettle 1 and the second water washing kettle 2 are both provided with a stirring mechanism 9, and the exteriors of the first water washing kettle 1 and the second water washing kettle 2 are both provided with a jacket 8 for heat exchange.

[0026] The inner cavity tops of the first water washing kettle 1 and the second water washing kettle 2 are both provided with an annular spray pipe 7. The spray pipe 7 is connected to the water inlet joint 6, and the two inner cavities are connected and communicated. The washing water enters the spray pipe 7 from the water inlet joint 6 for spraying.

[0027] A transfer pipe 10 and an intermediate water pipe 12 are provided between the first water washing kettle 1 and the second water washing kettle 2. The transfer pipe 10 is used to transfer the materials in the first water washing kettle 1 to the second water washing kettle 2, and the intermediate water pipe 12 is used to transfer the washing water in the second water washing kettle 2 to the first water washing kettle 1 for reuse.

[0028] A transfer pump 11 is installed on the transfer pipe 10, and an intermediate water pump 13 is installed on the intermediate water pipe 12.

[0029] The bottom of the first water washing kettle 1 is provided with an outlet, and a first three-way joint 16 is installed at the outlet. The side port of the first three-way joint 16 is connected to the bottom end of the transfer pipe 10, and the top end of the transfer pipe 10 is connected to the feed inlet 5 at the top of the second water washing kettle 2.

[0030] The bottom port of the first three-way joint 16 is connected to the top end of the waste water discharge pipe 19, and the bottom end of the waste water discharge pipe 19 is connected to the top of the recovery kettle 3. The washing waste water finally enters the recovery kettle 3 for the recovery of triethylamine.

[0031] The bottom of the second water-washing kettle 2 is provided with an outlet, and a second three-way valve 17 is installed at the outlet. The side port of the second three-way valve 17 is connected to the bottom end of the transfer water pipe 12, and the top end of the transfer water pipe 12 is connected to the water inlet joint 6 of the first water-washing kettle 1.

[0032] The bottom port of the second three-way valve 17 is connected to the top end of the discharge pipe 18, and the bottom end of the discharge pipe 18 is connected to the top of the purification kettle 4. The washed material enters the purification kettle 4 for further purification.

[0033] The water inlet joint 6 at the top of the second water-washing kettle 2 is connected to the water inlet pipe 14, and a water inlet pump 15 is installed on the water inlet pipe 14. The water inlet pump 15 pumps the washing water into the second water-washing kettle 2.

[0034] The specific working principle of the present utility model:

[0035] Water-washing principle: The material and the washing water are heated to 65°C - 70°C in the water-washing kettle, stirred and kept warm for 30 minutes, and after standing for 1 hour, they are stratified. The upper layer is the toluene layer, and the lower layer is the water layer.

[0036] The material to be washed first enters the first water-washing kettle 1 for washing, and then enters the second water-washing kettle 2 for washing under the action of the transfer pipe 10 and the transfer pump 11. After washing is completed, it enters the purification kettle 4 through the discharge pipe 18 for purification; the washing water is first pumped into the second water-washing kettle 2 under the action of the water inlet pipe 14 and the water inlet pump 15, and then pumped into the first water-washing kettle 1 under the action of the transfer water pipe 12 and the transfer water pump 13. The washing wastewater finally enters the recovery kettle 3 through the wastewater outlet pipe 19 for the recovery of triethylamine.

[0037] The material to be washed in the present utility model sequentially enters the first water-washing kettle and the second water-washing kettle for washing, realizing a continuous water-washing process, making the water-washing process sufficient, and the water layer in the second water-washing kettle can be used as the washing water for the first water-washing kettle, reducing the consumption of washing water.

[0038] The above is an example of the best implementation mode of the present utility model, and the parts not described in detail are all common general knowledge of those skilled in the art. The protection scope of the present utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present utility model is also within the protection scope of the present utility model.

Claims

1. A water-saving washing system for the preparation of chlorfenapyr, characterized in that: It includes a first water-washing kettle (1), a second water-washing kettle (2), a recovery kettle (3) and a purification kettle (4). Feed inlets (5) and water inlet connectors (6) are provided at the tops of the first water-washing kettle (1) and the second water-washing kettle (2); A transfer pipe (10) and a transfer water pipe (12) are provided between the first water-washing kettle (1) and the second water-washing kettle (2); The bottom of the first water-washing kettle (1) is provided with an outlet, and a first three-way joint (16) is installed at the outlet. The side port of the first three-way joint (16) is connected to the bottom end of the transfer pipe (10), and the top end of the transfer pipe (10) is connected to the feed inlet (5) at the top of the second water-washing kettle (2); The bottom of the second water-washing kettle (2) is provided with an outlet, and a second three-way joint (17) is installed at the outlet. The side port of the second three-way joint (17) is connected to the bottom end of the transfer water pipe (12), and the top end of the transfer water pipe (12) is connected to the water inlet connector (6) of the first water-washing kettle (1).

2. The water-saving washing system for preparing chlorfenapyr according to claim 1, wherein: A transfer pump (11) is installed on the transfer pipe (10), and a transfer water pump (13) is installed on the transfer water pipe (12).

3. The water-saving washing system for the preparation of chlorfenapyr according to claim 1, wherein: The bottom port of the first three-way joint (16) is connected to the top end of the waste water outlet pipe (19), and the bottom end of the waste water outlet pipe (19) is connected to the top of the recovery kettle (3).

4. The water-saving washing system for the preparation of chlorfenapyr according to claim 1, characterized in that: The bottom port of the second three-way joint (17) is connected to the top end of the discharge pipe (18), and the bottom end of the discharge pipe (18) is connected to the top of the purification kettle (4).

5. The water-saving washing system for the preparation of chlorfenapyr according to claim 1, characterized in that: Stirring mechanisms (9) are provided inside both the first water-washing kettle (1) and the second water-washing kettle (2).

6. The water-saving water washing system for the preparation of chlorfenapyr according to claim 5, characterized in that: Jackets (8) for heat exchange are provided outside both the first water-washing kettle (1) and the second water-washing kettle (2).

7. The water-saving water washing system for preparing chlorfenapyr according to claim 6, wherein: Annular spray pipes (7) are provided at the top of the inner cavities of both the first water-washing kettle (1) and the second water-washing kettle (2). The spray pipes (7) are connected to the water inlet connectors (6), and their inner cavities are in communication with each other.

8. The water-saving washing system for the preparation of chlorfenapyr according to claim 1, wherein: The water inlet connector (6) at the top of the second water-washing kettle (2) is connected to a water inlet pipe (14), and a water inlet pump (15) is installed on the water inlet pipe (14).

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