Hydrochloric acid recycling and filtering device

Abstract

The utility model discloses a hydrochloric acid recovery filter device which comprises a filter tank, the upper surface of the filter tank is fixedly connected with a motor, the output end of the motor is fixedly connected with a stirring rod, the outer surface of the filter tank close to the edge of the bottom is fixedly connected with a drain outlet, the upper surface of the filter tank is fixedly connected with a feed port, and the feed port is fixedly connected with a discharge port. A first pipeline is fixedly connected to the upper surface of the filter tank, a filter screen is arranged in the first pipeline, a cation resin tank and an anion resin tank are arranged on one side of the filter tank, water pipes are fixedly connected to the upper surfaces of the cation resin tank and the anion resin tank, and a pipeline system is fixedly connected to the lower surfaces of the cation resin tank and the anion resin tank. By means of the structure, most impurities and fine particles in waste liquid can be effectively removed by arranging the stirring rod, the filter screen and the resin tank, and the quality of recycled hydrochloric acid can be improved.

Description

Technical Field

[0001] This utility model relates to the field of hydrochloric acid recovery and filtration technology, specifically to a hydrochloric acid recovery and filtration device. Background Technology

[0002] Hydrochloric acid is widely used as an important chemical raw material in many fields of modern industrial production. For example, in steel pickling processes, hydrochloric acid is used to remove rust and scale from the surface of steel, making the surface smooth to meet the requirements of subsequent processing; in the chemical pharmaceutical industry, hydrochloric acid is often used as a reaction medium or participates in chemical reactions to synthesize various drug intermediates; in the food processing field, hydrochloric acid can be used to adjust the pH of food, etc. However, these industrial processes inevitably generate a large amount of waste liquid containing hydrochloric acid.

[0003] Traditional hydrochloric acid recovery and filtration methods have many limitations. The waste liquid contains some larger particles and fine particles, resulting in low purity of the recovered hydrochloric acid, which cannot meet the quality requirements of industrial production. Utility Model Content

[0004] This invention provides a hydrochloric acid recovery filtration device that can effectively remove most of the impurities and fine particles from waste liquid, thereby improving the quality of the recovered hydrochloric acid.

[0005] To achieve the above objectives, a hydrochloric acid recovery filtration device is provided, comprising a filtration tank, a motor fixedly connected to the upper surface of the filtration tank, a stirring rod fixedly connected to the output end of the motor, a drain outlet fixedly connected to the outer surface of the filtration tank near the bottom edge, a feed inlet fixedly connected to the upper surface of the filtration tank, a first pipe fixedly connected to the upper surface of the filtration tank, a filter screen disposed inside the first pipe, a cation resin tank and an anion resin tank disposed on one side of the filtration tank, water pipes fixedly connected to the upper surfaces of the cation resin tank and anion resin tank, and a piping system fixedly connected to the lower surfaces of the cation resin tank and anion resin tank. The motor is installed to facilitate power output; the stirring rod is installed to facilitate the dispersing of flocculants; the drain outlet is installed to facilitate the discharge of impurities; the feed inlet is installed to facilitate the entry of materials; the first pipeline is installed to facilitate the transportation of liquids; the filter screen is installed to facilitate the blocking of impurities; the cation exchange resin tank is installed to facilitate the filtration of metal ions; the anion exchange resin tank is installed to facilitate the filtration of acid ions; the water pipe is installed to facilitate the transportation of water; and the entire pipeline system is installed to facilitate the transportation of liquids.

[0006] According to the hydrochloric acid recovery filtration device, a first water pump is fixedly connected to the end of the first pipe furthest from the filtration tank, and a second pipe is fixedly connected to the end of the first water pump furthest from the filtration tank. The end of the second pipe furthest from the first water pump is fixedly connected to a cation exchange resin tank. The first water pump is provided to facilitate the power for transporting the liquid, and the second pipe is provided to facilitate the transport of the liquid.

[0007] According to the hydrochloric acid recovery and filtration device, the piping system includes a third pipe, a fourth pipe, a fifth pipe, a sixth pipe, a seventh pipe, an eighth pipe, a ninth pipe, a tenth pipe, and an eleventh pipe. One end of each of the third, fifth, sixth, seventh, eighth, and ninth pipes is fixedly connected to the tenth pipe. The tenth pipe is fixedly connected between the sixth and ninth pipes. The eleventh pipe is fixedly connected between the third and fifth pipes. One end of the fourth pipe is fixedly connected to the eleventh pipe. The third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh pipes are provided to facilitate liquid transport.

[0008] According to the hydrochloric acid recovery filtration device, the upper surface of the anion resin tank is fixedly connected to the fourth pipe, the lower surface of the anion resin tank is fixedly connected to the fifth pipe, and the lower surface of the cation resin tank is fixedly connected to the third pipe.

[0009] According to the hydrochloric acid recovery filtration device, the cation resin tank is equipped with a cation resin bed, and the anion resin tank is equipped with an anion resin bed. The cation resin bed is provided to facilitate the reaction of metal ions, and the anion resin bed is provided to facilitate the reaction of acid radical ions.

[0010] According to the hydrochloric acid recovery and filtration device, a storage tank is fixedly connected to the end of the sixth pipe furthest from the tenth pipe; a second backwash tank is fixedly connected to the end of the seventh pipe furthest from the tenth pipe; a first backwash tank is fixedly connected to the end of the eighth pipe furthest from the tenth pipe; and a waste liquid tank is fixedly connected to the end of the ninth pipe furthest from the tenth pipe. The storage tank is for convenient storage of hydrochloric acid; the second backwash tank is for convenient storage of anion exchange resin bed backwash liquid; the first backwash tank is for convenient storage of cation exchange resin bed backwash liquid; and the waste liquid tank is for convenient storage of waste liquid.

[0011] According to the hydrochloric acid recovery and filtration device, a second water pump is installed intermediately between the eleventh pipe and the third and fourth pipes. The second water pump is provided to facilitate the transport of the liquid.

[0012] According to the hydrochloric acid recovery and filtration device, a first valve is installed in the middle of the fourth pipe; a second valve is installed in the middle of the eleventh pipe, which is fixedly connected to the fourth and fifth pipes; a third valve is installed in the middle of the third pipe, which is fixedly connected to the tenth and eleventh pipes; a fourth valve is installed in the middle of the fifth pipe, which is fixedly connected to the tenth and eleventh pipes; a fifth valve is installed in the middle of the tenth pipe, which is fixedly connected to the fifth and sixth pipes; a sixth valve is installed in the middle of the ninth pipe; a seventh valve is installed in the middle of the eighth pipe; and an eighth valve is installed in the middle of the seventh pipe. The first, second, third, fourth, fifth, sixth, seventh, and eighth valves are installed to facilitate the obstruction of liquid transport.

[0013] The beneficial effects of this invention are: by setting up a stirring rod, a filter screen and a resin tank, most of the impurities and fine particles in the waste liquid can be effectively removed, which is conducive to improving the quality of the recovered hydrochloric acid.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a perspective view of the external structure of a hydrochloric acid recovery and filtration device according to the present invention;

[0017] Figure 2 This is a front view of the internal structure of the filter tank of a hydrochloric acid recovery filtration device according to this utility model;

[0018] Figure 3 This is a front view of the internal structure of the resin tank of a hydrochloric acid recovery filtration device according to this utility model;

[0019] Figure 4 This is an external front view of the third pipe of a hydrochloric acid recovery and filtration device according to this utility model.

[0020] Legend:

[0021] 1. Filter tank; 2. Drain outlet; 3. Stirring rod; 4. Feed inlet; 5. Motor; 6. First pipeline; 7. First water pump; 8. Cation resin tank; 9. Anion resin tank; 10. Second pipeline; 11. Water pipe; 12. Anion resin bed; 13. Cation resin bed; 14. Piping system; 15. Storage tank; 16. Waste liquid tank; 17. First backwash tank; 18. Second backwash tank; 19. Second water pump; 20. Filter screen; 21. First valve; 22. Second valve; 23. Third valve; 24. Fourth valve; 25. Fifth valve; 26. Sixth valve; 27. Seventh valve; 28. Eighth valve; 1401. Third pipeline; 1402. Fourth pipeline; 1403. Fifth pipeline; 1404. Sixth pipeline; 1405. Seventh pipeline; 1406. Eighth pipeline; 1407. Ninth pipeline; 1408. Tenth pipeline; 1409. Eleventh pipeline. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figures 1 to 4 This utility model discloses a hydrochloric acid recovery filtration device, which includes a filter tank 1. A motor 5 is fixedly connected to the upper surface of the filter tank 1, and a stirring rod 3 is fixedly connected to the output end of the motor 5. A drain outlet 2 is fixedly connected to the outer surface of the filter tank 1 near the bottom edge. A feed inlet 4 is fixedly connected to the upper surface of the filter tank 1. A first pipe 6 is fixedly connected to the upper surface of the filter tank 1. A filter screen 20 is installed inside the first pipe 6. A cation resin tank 8 and an anion resin tank 9 are installed on one side of the filter tank 1. A water pipe 11 is fixedly connected to the upper surface of the cation resin tank 8 and the anion resin tank 9 for rinsing the resin. A pipeline system 14 is fixedly connected to the lower surface of the cation resin tank 8 and the anion resin tank 9.

[0024] The piping system 14 includes a third pipe 1401, a fourth pipe 1402, a fifth pipe 1403, a sixth pipe 1404, a seventh pipe 1405, an eighth pipe 1406, a ninth pipe 1407, a tenth pipe 1408, and an eleventh pipe 1409. One end of the third pipe 1401, the fifth pipe 1403, the sixth pipe 1404, the seventh pipe 1405, the eighth pipe 1406, and the ninth pipe 1407 is fixedly connected to the tenth pipe 1408. The tenth pipe 1408 is fixedly connected between the sixth pipe 1404 and the ninth pipe 1407. The eleventh pipe 1409 is fixedly connected between the third pipe 1401 and the fifth pipe 1403. One end of the fourth pipe 1402 is fixedly connected to the eleventh pipe 1409.

[0025] The end of the first pipe 6 furthest from the filter tank 1 is fixedly connected to the first water pump 7 to ensure that liquid flows from the filter tank 1 into the cation resin tank 8. The end of the first water pump 7 furthest from the filter tank 1 is fixedly connected to the second pipe 10, and the end of the second pipe 10 furthest from the first water pump 7 is fixedly connected to the cation resin tank 8. The upper surface of the anion resin tank 9 is fixedly connected to the fourth pipe 1402, the lower surface of the anion resin tank 9 is fixedly connected to the fifth pipe 1403, and the lower surface of the cation resin tank 8 is fixedly connected to the third pipe 1401. The cation resin tank 8 contains a cation resin bed 13, and the anion resin tank 9 contains an anion resin bed 12.

[0026] A storage tank 15 is fixedly connected to the end of the sixth pipe 1404 furthest from the tenth pipe 1408. A second backwash tank 18 is fixedly connected to the end of the seventh pipe 1405 furthest from the tenth pipe 1408 to ensure the restoration of the ion exchange capacity of the anion exchange resin bed 12. A first backwash tank 17 is fixedly connected to the end of the eighth pipe 1406 furthest from the tenth pipe 1408 to ensure the restoration of the ion exchange capacity of the cation exchange resin bed 13. A waste liquid tank 16 is fixedly connected to the end of the ninth pipe 1407 furthest from the tenth pipe 1408. A second water pump 19 is installed in the middle of the eleventh pipe 1409, which is fixedly connected to the third pipe 1401 and the fourth pipe 1402.

[0027] A first valve 21 is installed in the middle of the fourth pipe 1402; a second valve 22 is installed in the middle of the eleventh pipe 1409, which is fixedly connected to the fourth pipe 1402 and the fifth pipe 1403; a third valve 23 is installed in the middle of the third pipe 1401, which is fixedly connected to the tenth pipe 1408 and the eleventh pipe 1409; a fourth valve 24 is installed in the middle of the fifth pipe 1403, which is fixedly connected to the tenth pipe 1408 and the eleventh pipe 1409; a fifth valve 25 is installed in the middle of the tenth pipe 1408, which is fixedly connected to the fifth pipe 1403 and the sixth pipe 1404; a sixth valve 26 is installed in the middle of the ninth pipe 1407; a seventh valve 27 is installed in the middle of the eighth pipe 1406; and an eighth valve 28 is installed in the middle of the seventh pipe 1405. These measures ensure the correct flow direction of the liquid.

[0028] Working principle: During use, open the first valve 21, the fourth valve 24, and the fifth valve 25, and close the second valve 22, the third valve 23, the sixth valve 26, the seventh valve 27, and the eighth valve 28. The waste liquid is then transported into the filter tank 1 through the inlet 4. The motor 5 drives the stirring rod 3 to rotate. Next, the flocculant is added into the filter tank 1 through the inlet 4, ensuring sufficient contact between the waste liquid and the flocculant so that fine suspended impurities coagulate into larger flocs. Solid impurities in the waste liquid and the flocs in the filter tank 1 are blocked by the filter screen 20 inside the first pipe 6. The first water pump 7 then drives the liquid from the filter tank 1 through the first pipe 6 and the second pipe 10 into the cation exchange resin tank 8. The liquid then passes through the cation exchange resin... After the cation exchange resin bed 13 in the grease tank 8 adsorbs metal ions, it flows into the third pipe 1401. The second water pump 19 then pumps the liquid through the third pipe 1401, the eleventh pipe 1409, and the fourth pipe 1402 to the anion exchange resin tank 9. The liquid then reacts with chloride ions in the anion exchange resin bed 12 in the anion exchange resin tank 9, and then flows through the fifth pipe 1403, the tenth pipe 1408, and the sixth pipe 1404 into the storage tank 15 to obtain high-purity hydrochloric acid. After a period of use, the first water pump 7 is turned off, the second valve 22, the fourth valve 24, and the seventh valve 27 are opened, and the first valve 21, the third valve 23, the fifth valve 25, the sixth valve 26, and the eighth valve 28 are closed. Then, the liquid in the first backwash tank 17 flows through the... The power provided by the second water pump 19 enters the cation exchange resin tank 8 through the eighth pipe 1406, tenth pipe 1408, fifth pipe 1403, eleventh pipe 1409, and third pipe 1401 to flush the cation exchange resin bed 13 and restore its ion exchange capacity. Then, the seventh valve 27 and the second water pump 19 are closed, and the eighth valve 28 is opened. Water then enters the cation exchange resin tank 8 through the water pipe 11 to clean the cation exchange resin bed 13. The cleaning liquid enters the waste liquid tank 16 through the third pipe 1401, eleventh pipe 1409, fifth pipe 1403, tenth pipe 1408, and seventh pipe 1405. After cleaning, the fourth valve 24 and the eighth valve 28 are closed, and the sixth valve 26, the third valve 23, and the second water pump 19 are opened. Water pump 19 then powers the liquid in the second backwash tank 18 to enter the anion resin tank 9 via the ninth pipe 1407, tenth pipe 1408, third pipe 1401, eleventh pipe 1409, and fifth pipe 1403, flushing the anion resin bed 12 and restoring its ion exchange capacity. After flushing, the sixth valve 26, the second valve 22, and the second water pump 19 are closed, while the fourth valve 24 and the eighth valve 28 are opened. Water flows through water pipe 11 to clean the anion resin bed 12, and the cleaning liquid flows through the fifth pipe 1403, tenth pipe 1408, and seventh pipe 1405 into the waste liquid tank 16. After cleaning, hydrochloric acid can be recovered and filtered again.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A hydrochloric acid recovery filtration apparatus comprising a filter basin (1), characterized in that, A motor (5) is fixedly connected to the upper surface of the filter tank (1), and a stirring rod (3) is fixedly connected to the output end of the motor (5). A drain outlet (2) is fixedly connected to the outer surface of the filter tank (1) near the bottom edge. A feed inlet (4) is fixedly connected to the upper surface of the filter tank (1). A first pipe (6) is fixedly connected to the upper surface of the filter tank (1). A filter screen (20) is installed inside the first pipe (6). A cation resin tank (8) and an anion resin tank (9) are installed on one side of the filter tank (1). A water pipe (11) is fixedly connected to the upper surface of the cation resin tank (8) and the anion resin tank (9). A pipeline system (14) is fixedly connected to the lower surface of the cation resin tank (8) and the anion resin tank (9).

2. The hydrochloric acid recovery and filtration device according to claim 1, characterized in that, The first water pump (7) is fixedly connected to the end of the first pipe (6) away from the filter tank (1), and the second pipe (10) is fixedly connected to the end of the first water pump (7) away from the filter tank (1). The end of the second pipe (10) away from the first water pump (7) is fixedly connected to the cation resin tank (8).

3. The hydrochloric acid recovery and filtration device according to claim 1, characterized in that, The piping system (14) includes a third pipe (1401), a fourth pipe (1402), a fifth pipe (1403), a sixth pipe (1404), a seventh pipe (1405), an eighth pipe (1406), a ninth pipe (1407), a tenth pipe (1408), and an eleventh pipe (1409). One end of the third pipe (1401), the fifth pipe (1403), the sixth pipe (1404), the seventh pipe (1405), the eighth pipe (1406), and the ninth pipe (1407) are fixedly connected to the tenth pipe (1408). The tenth pipe (1408) is fixedly connected between the sixth pipe (1404) and the ninth pipe (1407). The eleventh pipe (1409) is fixedly connected between the third pipe (1401) and the fifth pipe (1403). One end of the fourth pipe (1402) is fixedly connected to the eleventh pipe (1409).

4. The hydrochloric acid recovery and filtration device according to claim 3, characterized in that, The upper surface of the anion resin tank (9) is fixedly connected to the fourth pipe (1402), the lower surface of the anion resin tank (9) is fixedly connected to the fifth pipe (1403), and the lower surface of the cation resin tank (8) is fixedly connected to the third pipe (1401).

5. The hydrochloric acid recovery and filtration device according to claim 1, characterized in that, The cation resin tank (8) is provided with a cation resin bed (13) inside, and the anion resin tank (9) is provided with an anion resin bed (12) inside.

6. The hydrochloric acid recovery and filtration device according to claim 3, characterized in that, A storage tank (15) is fixedly connected to the end of the sixth pipe (1404) away from the tenth pipe (1408), a second backwash tank (18) is fixedly connected to the end of the seventh pipe (1405) away from the tenth pipe (1408), a first backwash tank (17) is fixedly connected to the end of the eighth pipe (1406) away from the tenth pipe (1408), and a waste liquid tank (16) is fixedly connected to the end of the ninth pipe (1407) away from the tenth pipe (1408).

7. The hydrochloric acid recovery and filtration device according to claim 3, characterized in that, A second water pump (19) is provided in the middle of the eleventh pipe (1409) which is fixedly connected to the third pipe (1401) and the fourth pipe (1402).

8. The hydrochloric acid recovery filtration device according to claim 7, characterized in that, A first valve (21) is provided in the middle of the fourth pipe (1402). A second valve (22) is provided in the middle of the eleventh pipe (1409) which is fixedly connected to the fourth pipe (1402) and the fifth pipe (1403). A third valve (23) is provided in the middle of the third pipe (1401) which is fixedly connected to the tenth pipe (1408) and the eleventh pipe (1409). A fourth valve (24) is provided in the middle of the fifth pipe (1403) which is fixedly connected to the tenth pipe (1408) and the eleventh pipe (1409). A fifth valve (25) is provided in the middle of the tenth pipe (1408) which is fixedly connected to the fifth pipe (1403) and the sixth pipe (1404). A sixth valve (26) is provided in the middle of the ninth pipe (1407). A seventh valve (27) is provided in the middle of the eighth pipe (1406). An eighth valve (28) is provided in the middle of the seventh pipe (1405).

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