Dissolved base liquid recovery column for waste liquid treatment

Abstract

The utility model discloses a kind of dissolving base liquid recovery towers for waste liquid treatment, it relates to waste liquid treatment field, and its technical solution main point is including recovery tower, connecting pipe is connected to recovery tower side face, heating equipment is fixed in the bottom of recovery tower, first filter piece and second filter piece are fixed in the inside of recovery tower, steam outlet is equipped in the top of recovery tower, first filter piece is located below second filter piece, the first filter piece includes the box body fixed in the inside of recovery tower, water is placed in the inside of box body, the second filter piece includes the filter box of inverted conical arrangement, filter box side face and top are all equipped with uniformly distributed through -hole, activated carbon granule is placed in the inside of filter box, reaches the effect of effectively removing toxic gas, recycling completely avoids secondary pollution.

Description

Technical Field

[0001] This utility model relates to the technical field of waste liquid treatment, specifically to a dissolved base liquid recovery tower for waste liquid treatment. Background Technology

[0002] In waste liquid recovery, the base liquid used for dissolution is typically water or other suitable solvents. The specific solvent chosen depends on the main components of the waste liquid and their chemical properties. For example:

[0003] Water: Suitable for dissolving most inorganic salts and some organic substances. Acids or bases: Such as hydrochloric acid, sulfuric acid, sodium hydroxide solution, etc., are used to neutralize and dissolve specific inorganic waste liquids. Organic solvents: Such as methanol, ethanol, acetone, etc., are used to dissolve organic waste liquids. Choosing a suitable base liquid can effectively dissolve, separate, or further treat harmful substances in waste liquids, thereby achieving the goals of recycling and environmental protection.

[0004] In the process of waste liquid treatment, after dissolving harmful substances in the waste liquid, the organic solvents have good utilization value. Therefore, it is necessary to separate the organic solvents from the harmful substances and recover the organic solvents. In the prior art, such as CN202420033787.0, an organic solvent recovery tank is disclosed, including a tank body with a sealed space inside and an inlet pipe and an outlet pipe at the bottom; a recovery component connected to the tank body for heating the organic solvent waste liquid to recover organic solvent gas; multiple stirring components, all built into the sealed space, for stirring the organic solvent waste liquid; and a driving component including two sets of linkage structures and two external drive motors. The two drive motors are respectively connected to the corresponding linkage structures, and the two linkage structures are both connected to the stirring component. The two drive motors are used to drive the corresponding linkage structures to move in opposite directions to drive the stirring component to rotate.

[0005] One method involves using distillation to recover organic solvents, but harmful substances are easily volatilized along with the vapor during distillation, leading to secondary pollution. Therefore, further improvements are needed. Utility Model Content

[0006] The purpose of this invention is to provide a dissolved base liquid recovery tower for waste liquid treatment that effectively removes toxic gases and completely avoids secondary pollution.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The invention includes a recovery tower with a connecting pipe connected to its side and a heating device fixed at its bottom. The recovery tower is characterized by having a first filter element and a second filter element fixed inside, a steam outlet at the top, and the first filter element located below the second filter element. The first filter element comprises a box fixed inside the recovery tower, with water placed inside the box. The second filter element comprises an inverted conical filter box with evenly distributed through holes on its side and top, and activated carbon particles placed inside the filter box.

[0009] Furthermore, the bottom of the box is provided with a sinking groove, and the sinking groove has air holes on the side facing the inside of the box. A cover plate is fixed on the top of the box, the cover plate is located above the air holes, and several through holes are provided on the cover plate.

[0010] Furthermore, an inlet pipe and an outlet pipe are fixed on the cover plate, with the inlet pipe and outlet pipe extending out along both sides of the recovery tower, respectively.

[0011] By adopting the above technical solution, steam enters the interior through the through holes on the side of the filter box. After contacting the activated carbon particles inside, the toxic gases inside are adsorbed by the activated carbon particles. The unadsorbed steam continues to rise and is discharged through the steam outlet for condensation and collection, further adsorbing the toxic gases inside the steam and removing the toxic gases inside the steam.

[0012] Furthermore, a rotating shaft is rotatably connected to the side of the filter box, with both ends of the rotating shaft extending along both sides of the recovery tower. A motor is fixed to one end of the rotating shaft, which is fixed to the side of the recovery tower. A rotating seat is connected to the other end of the rotating shaft, and the rotating shaft rotates inside the rotating seat. A stirring plate is fixed to the outside of the rotating shaft, and several stirring plates are arranged along the circumference of the rotating shaft.

[0013] By adopting the above technical solution, steam enters the interior through the through holes on the side of the filter box. After contacting the activated carbon particles inside, the toxic gases inside are adsorbed by the activated carbon particles. The unadsorbed steam continues to rise and is discharged through the steam outlet for condensation and collection, further adsorbing the toxic gases inside the steam.

[0014] Furthermore, a heating recovery pipe is fixed inside the filter box, and a fixed pipe is fixed inside the heating recovery pipe. The fixed pipe is filled with nitrogen, and a nitrogen inlet pipe is fixed on the side of the fixed pipe. A heating rod is fixed inside the fixed pipe, and a bracket is fixed outside the heating rod. The other end of the bracket is fixed to the inner wall of the fixed pipe.

[0015] By adopting the above technical solution, nitrogen carries heat through the heating recovery pipe and enters the filter box. At this time, the hot nitrogen makes the outside of the heating recovery pipe evenly heated. The hot heating recovery pipe contacts the surface of the activated carbon particles, causing the organic solvent crystallized on the activated carbon particles to be heated and turn into liquid, automatically flowing along the bottom of the filter box. Then, it enters the pipe through the through groove on the heating recovery pipe and is discharged and collected through the heating recovery pipe.

[0016] Furthermore, the heating recovery pipe has a through groove on its side, which is fitted into the side wall of the filter box. By adopting the above technical solution, it is convenient for liquid organic solvents to flow into the through groove for better collection.

[0017] In summary, the beneficial technical effects of this utility model are as follows:

[0018] 1. The filter box is designed so that steam enters the interior through the through holes on the side of the filter box. After contacting the activated carbon particles inside, the toxic gases in the activated carbon particles are adsorbed. The unadsorbed steam continues to rise and is discharged through the steam outlet for condensation and collection, which further adsorbs the toxic gases inside the steam, removes the toxic gases inside the steam, and avoids secondary pollution.

[0019] 2. A filter box is used. Steam enters the interior through the through holes on the side of the filter box. After contacting the activated carbon particles inside, the toxic gases inside are adsorbed by the activated carbon particles. The unadsorbed steam continues to rise and is discharged through the steam outlet for condensation and collection, further adsorbing the toxic gases inside the steam. 3. A heating recovery pipe is used. Since the surface temperature of the activated carbon particles is not high, organic solvent crystals will be generated on the surface of the steam when it passes through. The organic solvent crystals remaining on the surface of the activated carbon particles are recovered through the heating recovery pipe, which fully recovers the organic solvent, avoids waste, and saves costs. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a dissolved base liquid recovery tower for waste liquid treatment provided in this embodiment;

[0022] Figure 2 This embodiment provides a dissolved base liquid recovery tower for waste liquid treatment. Figure 1 Another perspective illustration;

[0023] Figure 3 This is a schematic diagram of the interior of a waste liquid treatment dissolved base liquid recovery tower provided in this embodiment;

[0024] Figure 4 This is a schematic diagram of the box structure of a dissolved base liquid recovery tower for waste liquid treatment provided in this embodiment.

[0025] In the diagram, 1. Recovery tower; 2. Connecting pipe; 3. Through channel; 4. Steam outlet; 5. Box body; 6. Filter box; 7. Through hole; 8. Submersion tank; 9. Air hole; 10. Cover plate; 11. Through hole; 12. Water inlet pipe; 13. Water outlet pipe; 14. Rotating shaft; 15. Motor; 16. Rotating seat; 17. Stirring plate; 18. Heating recovery pipe; 19. Fixed pipe; 20. Nitrogen inlet pipe; 21. Heating rod; 22. Support. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 The present invention provides a technical solution comprising: a recovery tower 1, a connecting pipe 2 connected to the side of the recovery tower 1, a heating device fixed at the bottom of the recovery tower 1, a first filter element and a second filter element fixed inside the recovery tower 1, a steam outlet 4 at the top of the recovery tower 1, the first filter element being located below the second filter element, the first filter element comprising a box 5 fixed inside the recovery tower 1, water being placed inside the box 5, the second filter element comprising a filter box 6 arranged in an inverted cone shape, the filter box 6 having evenly distributed through holes 7 on its side and top, and activated carbon particles being placed inside the filter box 6.

[0029] In this embodiment, the dissolved base liquid after waste liquid treatment is introduced into the recovery tower 1 through the connecting pipe 2. After being introduced into the recovery tower 1, the heating device is turned on for heating and distillation. The heating device is a conventional industrial heating equipment.

[0030] A recessed groove 8 is provided at the bottom of the box body 5. An air hole 9 is provided on the side of the recessed groove 8 facing the inside of the box body 5. A cover plate 10 is fixed on the top of the box body 5. The cover plate 10 is located above the air hole 9 and has several through holes 11.

[0031] The cover plate 10 is fixed with an inlet pipe 12 and an outlet pipe 13, which extend along the two sides of the recovery tower 1 respectively.

[0032] Both the inlet pipe 12 and the outlet pipe 13 are connected to external water pumps. The pump at the inlet pipe 12 is responsible for drawing water into the tank 5, while the pump at the outlet pipe 13 is responsible for drawing water out, maintaining the water balance inside the tank 5, and keeping the liquid level 5cm below all the vents 9. The vapor generated by distillation automatically flows into the tank 5 from the top through the vents 9 inside the settling tank 8. After flowing into the tank 5, the vapor comes into contact with the water because the top of the tank 5 is blocked by the cover plate 10. The toxic gases inside dissolve in the water, while the vapor of the remaining insoluble organic solvent continues to rise through the through holes 11 on the cover plate 10.

[0033] Furthermore, the design of chamber 5 allows for the dissolution of most toxic gases that are easily soluble in water, ensuring that the content of toxic gases in the distilled steam is minimized.

[0034] A filter box 6 is further installed above the housing 5 to further adsorb toxic gases inside the steam. Activated carbon granules are placed inside the filter box 6. A rotating shaft 14 is rotatably connected to the side of the filter box 6. The two ends of the rotating shaft 14 extend along the sides of the recovery tower 1. A motor 15 is fixed to one end of the rotating shaft 14 and is fixed to the side of the recovery tower 1. The other end of the rotating shaft 14 is connected to a rotating seat 16. The rotating shaft 14 rotates inside the rotating seat 16. A stirring plate 17 is fixed to the outside of the rotating shaft 14. Several stirring plates 17 are arranged along the circumference of the rotating shaft 14.

[0035] Meanwhile, a heating recovery pipe 18 is fixed inside the filter box 6, and a fixed pipe 19 is fixed inside the heating recovery pipe 18. The fixed pipe 19 is filled with nitrogen, and a nitrogen inlet pipe 20 is fixed on the side of the fixed pipe 19. A heating rod 21 is fixed inside the fixed pipe 19, and a bracket 22 is fixed outside the heating rod 21. The other end of the bracket 22 is fixed to the inner wall of the fixed pipe 19.

[0036] Furthermore, the heating recovery pipe 18 has a through groove 3 on its side, which is fitted to the side wall of the filter box 6. Steam enters the interior through the through hole 7 on the side of the filter box 6, and after contacting the activated carbon particles inside, the toxic gases in the activated carbon particles are adsorbed by the activated carbon particles. The unadsorbed steam continues to rise and is discharged and collected through the steam outlet 4.

[0037] When the steam passes through the filter box 6, the motor 15 is turned on. The motor 15 drives the rotating shaft 14 to rotate, which in turn drives the activated carbon particles inside to stir through the stirring plate 17, so that the steam can fully contact the activated carbon particles and improve the adsorption efficiency.

[0038] When no steam is produced at steam outlet 4, the surface temperature of the activated carbon particles is not high. Therefore, when steam passes through, organic solvent crystals will form on their surface. Nitrogen gas is introduced into the nitrogen inlet pipe 20, and the heating rod 21 is turned on simultaneously. This allows the nitrogen gas to carry heat through the heating recovery pipe 18 and enter the filter box 6. At this time, the hot nitrogen gas makes the outside of the heating recovery pipe 18 uniformly heated. The hot heating recovery pipe 18 contacts the surface of the activated carbon particles, causing the organic solvent crystals on the activated carbon particles to become liquid and automatically flow along the bottom of the filter box 6. Then, it enters the pipe through the through groove 3 on the heating recovery pipe 18 and is discharged and collected through the heating recovery pipe 18. The working principle of this utility model is as follows: The dissolved base liquid is distilled inside the recovery tower 1. The organic solvent is recovered by collecting and condensing the steam. The toxic gases present in the steam are dissolved by water inside the box 5 and adsorbed by the activated carbon particles inside the filter box 6. The above-mentioned two-stage adsorption structure completely filters out the toxic gases, thereby increasing the concentration of the recovered organic solvent and avoiding secondary pollution.

[0039] The organic solvent crystals remaining on the surface of the activated carbon particles are recovered through the heating recovery tube 18, which fully recovers the organic solvent, avoids waste, and saves costs.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dissolved base liquid recovery tower for waste liquid treatment, comprising a recovery tower (1), a connecting pipe (2) connected to the side of the recovery tower (1), and a heating device fixed to the bottom of the recovery tower (1), characterized in that, The recovery tower (1) is equipped with a first filter element and a second filter element. The top of the recovery tower (1) is provided with a steam outlet (4). The first filter element is located below the second filter element. The first filter element includes a box (5) fixed inside the recovery tower (1). Water is placed inside the box (5). The second filter element includes a filter box (6) arranged in an inverted cone shape. The side and top of the filter box (6) are provided with evenly distributed through holes (7). Activated carbon particles are placed inside the filter box (6).

2. The dissolved base liquid recovery tower (1) for waste liquid treatment according to claim 1, characterized in that: The bottom of the box (5) is provided with a sinking groove (8), and the sinking groove (8) is provided with an air hole (9) facing the inside of the box (5). The top of the box (5) is fixed with a cover plate (10), which is located above the air hole (9). Several through holes (11) are provided on the cover plate (10).

3. The dissolved base liquid recovery tower (1) for waste liquid treatment according to claim 2, characterized in that: The cover plate (10) is fixed with an inlet pipe (12) and an outlet pipe (13), which extend along both sides of the recovery tower (1).

4. The dissolved base liquid recovery tower (1) for waste liquid treatment according to claim 1, characterized in that: The filter box (6) is rotatably connected to a rotating shaft (14) on its side. The two ends of the rotating shaft (14) extend along both sides of the recovery tower (1). A motor (15) is fixed to one end of the rotating shaft (14), which is fixed to the side of the recovery tower (1). The other end of the rotating shaft (14) is connected to a rotating seat (16), which rotates inside the rotating seat (16). A stirring plate (17) is fixed to the outside of the rotating shaft (14), and several stirring plates (17) are arranged along the circumference of the rotating shaft (14).

5. The dissolved base liquid recovery tower (1) for waste liquid treatment according to claim 4, characterized in that: The filter box (6) is also fixed with a heating recovery pipe (18), and a fixing pipe (19) is fixed inside the heating recovery pipe (18). The fixing pipe (19) is filled with nitrogen. A nitrogen inlet pipe (20) is fixed on the side of the fixing pipe (19). A heating rod (21) is fixed inside the fixing pipe (19). A bracket (22) is fixed outside the heating rod (21). The other end of the bracket (22) is fixed on the inner wall of the fixing pipe (19).

6. The dissolved base liquid recovery tower (1) for waste liquid treatment according to claim 5, characterized in that: The heating recovery pipe (18) has a through groove (3) on its side, and the through groove (3) is set in close contact with the side wall of the filter box (6).

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