Double filtration equipment for desulfurization waste liquid in coal chemical industry production

Abstract

The utility model relates to the technical field of filtering equipment, and discloses coal chemical industry production desulfurization waste liquid double filtering equipment which comprises a waste liquid filtering box, a waste liquid feeding pipe is arranged at the top of the waste liquid filtering box, a desulfurizing agent feeding pipe is communicated with the side wall of the waste liquid feeding pipe, and a waste liquid discharging pipe is arranged at the bottom of the waste liquid filtering box; a filtering structure; a stirring member; a motor; the driving belt pulley is fixedly mounted on an output shaft of the motor; the driven belt pulley is fixedly mounted at one end of the top of the rotating shaft rod; the transmission belt is mounted on the driving belt pulley and the driven belt pulley in a sleeving manner; and a second activated carbon adsorption plate. According to the filtering equipment, solid-liquid separation can be effectively carried out on treated wastewater, meanwhile, purified water formed after separation can be subjected to secondary purification through the second activated carbon adsorption plate, the purified water obtained after secondary purification can be discharged outwards at the same time through the multiple liquid discharging branch pipes, and therefore the liquid discharging efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a double filtering device for desulfurization waste liquid in coal chemical production. Background Art

[0002] In the coal chemical production process, a large amount of desulfurization waste liquid is usually discharged. After the desulfurization waste liquid is discharged, it will pollute the surrounding environment. In order to make the discharge more environmentally friendly and reduce pollution, the desulfurization waste liquid is usually filtered, and the corresponding filtering equipment is required for the filtering operation.

[0003] After searching, a Chinese utility model patent with the announcement number CN209636048U discloses a zero-discharge system for desulfurized waste liquid. The zero-discharge system for desulfurized waste liquid includes: a concentration device, which separates the desulfurized waste liquid into water and concentrated liquid by distillation; a filtering device, which separates the concentrated liquid into filtrate and filter cake by solid-liquid separation; a drying device, which evaporates the water in the filtrate by heating it, and finally obtains a solid product; wherein the concentration device, the filtering device and the drying device are connected in sequence.

[0004] Therefore, in conjunction with the patent specification and attached Figure 1-4 It can be seen that the filtering treatment of the desulfurization waste liquid requires solid-liquid separation. However, in this patent, the filtering treatment of the desulfurization waste liquid is only a filtering process. Therefore, the filtering process is single, and after the waste liquid is filtered in this process, it still cannot be purified and turned into clean water.

[0005] Based on this, in order to solve the above technical problems, a double filtration equipment for desulfurization waste liquid in coal chemical production is proposed. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a double filtration device for desulfurization waste liquid in coal chemical production to solve the problem raised in the background technology: for the filtration treatment of desulfurization waste liquid, it is necessary to separate the desulfurization waste liquid into solid and liquid. However, in a desulfurization waste liquid zero emission system disclosed in the Chinese utility model patent with announcement number CN209636048U, the filtration treatment of the desulfurization waste liquid is only a filtration process. Therefore, the filtration process is single, and after the waste liquid is filtered in this process, it still cannot be purified and formed into clean water.

[0008] (II) Technical solution

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A double filtration device for desulfurization waste liquid in coal chemical production, comprising:

[0011] A waste liquid filter box, wherein the top of the waste liquid filter box is provided with a waste liquid feeding pipe, the side wall of the waste liquid feeding pipe is connected with a desulfurizer feeding pipe, the bottom of the waste liquid filter box is provided with a waste liquid discharge pipe, the bottom of the waste liquid discharge pipe is provided with a closing portion, the side wall of the waste liquid discharge pipe is connected with a plurality of discharge branch pipes, and each of the discharge branch pipes is fixedly installed with a discharge valve;

[0012] A filter structure, wherein the filter structure is installed in the middle of the inner cavity of the waste liquid filter box;

[0013] A stirring member, the stirring member is installed at the upper part of the inner cavity of the waste liquid filter box;

[0014] Wherein, the stirring member is composed of a rotating shaft and a plurality of stirring wing rods fixedly mounted on the side wall of the rotating shaft;

[0015] A motor, wherein the motor is fixedly mounted on one side of the top of the waste liquid filter box, and an output shaft of the motor passes downward from the top of the waste liquid filter box and extends to the top of the inner cavity of the waste liquid filter box;

[0016] A driving pulley, wherein the driving pulley is fixedly mounted on the output shaft of the motor;

[0017] A driven pulley, the driven pulley being fixedly mounted on one end of the top of the rotating shaft;

[0018] A transmission belt, wherein the transmission belt is sleeved and mounted on the driving pulley and the driven pulley; and

[0019] The second activated carbon adsorption plate is fixedly mounted on the lower part of the inner cavity of the waste liquid filter box.

[0020] Preferably, a lower rectangular fixing frame and an upper rectangular fixing frame are respectively sleeved and installed on the bottom and top of the rotating shaft rod, and the outer frames of the lower rectangular fixing frame and the upper rectangular fixing frame are fixedly installed on the inner wall of the waste liquid filter box, and the inner ring of the lower rectangular fixing frame is rotatably connected to the bottom end of the rotating shaft rod, and the inner ring of the upper rectangular fixing frame is rotatably connected to the top end of the rotating shaft rod.

[0021] Preferably, a through groove is provided on one side wall of the waste liquid filter box at a position corresponding to the filter structure, and a circular rubber sealing strip is embedded in the through groove;

[0022] A sealing cover plate is embedded in the circular rubber sealing strip, and a circular handle is fixedly installed on the outer side wall of the sealing cover plate;

[0023] The filtering structure is detachably installed in the inner cavity of the waste liquid filtering box.

[0024] Preferably, linear guide rails are installed on both sides of the filtering structure, and the two linear guide rails are respectively fixedly installed on opposite side walls of the inner cavity of the waste liquid filtering box;

[0025] The filtering structure comprises a first activated carbon adsorption plate, which is inserted and installed between two linear guide rails, and an ultrafiltration membrane is fitted on the upper surface and the lower surface of the first activated carbon adsorption plate;

[0026] After the sealing cover is opened, the filter structure can be pulled outward.

[0027] Preferably, the first activated carbon adsorption plate is provided with a plurality of first plate body penetration holes.

[0028] Preferably, the thickness of the two ultrafiltration membranes is 2-5 mm.

[0029] Preferably, the second activated carbon adsorption plate is provided with a plurality of second plate body penetration holes.

[0030] Preferably, one end of the top of the desulfurizing agent feeding pipe is inclined upward.

[0031] Preferably, a plurality of drainage branch pipes are distributed circumferentially on the side wall of the waste liquid discharge pipe, and a bottom end of each of the drainage branch pipes is inclined downward.

[0032] Preferably, electric heating plates are fixedly mounted on opposite outer side walls of the waste liquid filter box.

[0033] Beneficial effects:

[0034] The utility model provides a double filtering device for desulfurization waste liquid in coal chemical production, which has the following beneficial effects:

[0035] 1. In the utility model, the filtering device can effectively separate the solid and liquid of the treated wastewater. At the same time, the clean water formed after separation can also be secondary purified through the second activated carbon adsorption plate, thereby effectively solving the problem of a single filtering process and realizing double filtration of wastewater;

[0036] The clean water after secondary purification can also be discharged through multiple drainage branches at the same time, thereby effectively improving the drainage efficiency.

[0037] 2. In the utility model, the motor can drive the rotation of the driving pulley through its output shaft, and the driving pulley drives the rotation of the driven pulley through the transmission of the transmission belt. The driven pulley synchronously drives the rotation of the stirring member when rotating. When the stirring member rotates, the waste liquid and the desulfurizer mixed into the waste liquid can be fully mixed and stirred, so that the metal ions in the desulfurizer can fully react with the sulfide in the waste liquid and generate precipitates to purify the waste liquid.

[0038] 3. In the present invention, after the waste liquid and the desulfurizing agent have fully reacted, in order to separate the reaction precipitate, the reaction liquid will gradually penetrate downward through the filtering structure, and the precipitate in the reaction liquid can be separated by the filtering structure.

[0039] 4. In the utility model, the reaction liquid separated by the filtering structure is formed into clean water. The clean water passing through the filtering structure continues to flow downward and flows to the second activated carbon adsorption plate. The clean water flowing to the second activated carbon adsorption plate will gradually penetrate downward through the second activated carbon adsorption plate. When the clean water penetrates through the second activated carbon adsorption plate, some harmful substances inside the clean water will be adsorbed by the second activated carbon adsorption plate to achieve secondary purification.

[0040] 5. In the utility model, the purified water will flow to the bottom of the inner cavity of the waste liquid filter box. At this time, each drain valve will be unscrewed to keep each drain branch pipe unobstructed. The reaction liquid at the bottom of the inner cavity of the waste liquid filter box will be discharged outward through each drain branch pipe. After the drainage is completed, each drain valve can be tightened again. Among them, when each drain branch pipe is discharged at the same time, the drainage efficiency can be effectively improved.

[0041] 6. In the utility model, the filter structure in the filter device can also be arranged to be detachable, so as to facilitate its disassembly, cleaning or replacement at any time. A through groove is opened on one side wall of the waste liquid filter box and at the corresponding filter structure. A round-shaped rubber sealing strip is embedded in the through groove, and a sealing cover plate is embedded in the round-shaped rubber sealing strip. A round-shaped handle is fixedly installed on the outer side wall of the sealing cover plate. The filter structure is detachably installed in the inner cavity of the waste liquid filter box. The sealing cover plate can be opened by pulling the round-shaped handle. When the sealing cover plate is opened, the filter structure can be removed from the inner cavity of the waste liquid filter box to clean or replace the filter structure. After cleaning or replacement, the filter structure is reinstalled in the waste liquid filter box, and then the sealing cover plate is embedded in the round-shaped rubber sealing strip. Among them, the sealing cover plate and the round-shaped rubber sealing strip are interference fit. Therefore, under the action of the round-shaped rubber sealing strip, water seepage to the outside can be avoided.

[0042] 7. In the present invention, the first activated carbon adsorption plate can also perform preliminary purification on the reaction liquid during the process of filtering the reaction liquid.

[0043] 8. In the present invention, after the sealing cover is opened, the filter structure can be pulled outwards. After the filter structure is pulled outwards, the water pipe is extended into the waste liquid filter box, and the second activated carbon adsorption plate can be washed.

[0044] 9. In the present invention, the purified water can penetrate downward through the first activated carbon adsorption plate, and each first activated carbon adsorption plate is used to increase the speed and efficiency of the purified water penetrating downward;

[0045] The clean water can penetrate downward through the second plate body penetration holes, and each second plate body penetration hole is used to increase the speed and efficiency of the clean water penetrating downward.

[0046] 10. In the utility model, when one side of the top of the desulfurizing agent feeding pipe is tilted upward, it is beneficial for the desulfurizing agent to slide into the waste liquid feeding pipe better and mix with the desulfurized waste liquid.

[0047] 11. In the present invention, when the bottom end of each drainage branch pipe is tilted downward, the drainage work can be better completed.

[0048] 12. In the utility model, during the process of mixing and stirring the waste liquid by the stirring element, two electric heating plates can be powered on for heating. When the two electric heating plates are powered on to heat the two side walls of the waste liquid filter box, the heat on the waste liquid filter box body will be transferred to the waste liquid in the waste liquid filter box, so that the stirred waste liquid can be heated. When the waste liquid is heated, the sulfide in the waste liquid can better react with the metal ions in the reagent to shorten the reaction time of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a three-dimensional schematic diagram of a partial cross section of the utility model;

[0050] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0051] Figure 3 It is a three-dimensional schematic diagram of the present invention when viewed from above;

[0052] Figure 4 It is a three-dimensional schematic diagram of a combination of a lower rectangular fixing frame, an upper rectangular fixing frame, a stirring member, a motor, a driving pulley, a driven pulley and a transmission belt of the utility model;

[0053] Figure 5 It is a three-dimensional schematic diagram of the combination of two linear guide rails and a filtering structure of the utility model;

[0054] Figure 6 for Figure 5 Explosion diagram in ;

[0055] Figure 7 for Figure 3 A magnified three-dimensional schematic diagram of part A in FIG.

[0056] Figure 8 It is a three-dimensional schematic diagram of the waste liquid filter box of the utility model;

[0057] Fig. 9 It is a three-dimensional schematic diagram of the third embodiment of the present utility model.

[0058] In the figure: 1. waste liquid filter box; 101. waste liquid feeding pipe; 102. desulfurizer feeding pipe; 103. waste liquid discharge pipe; 1031. closing part; 104. discharge branch pipe; 105. discharge valve; 106. through groove; 2. linear guide; 3. filtering structure; 301. first activated carbon adsorption plate; 3011. first plate body penetration hole; 302. ultrafiltration membrane; 4. lower rectangular fixing frame; 5. upper rectangular fixing frame; 6. stirring member; 601. rotating shaft; 602. stirring wing rod; 7. motor; 8. driving pulley; 9. driven pulley; 10. transmission belt; 11. second activated carbon adsorption plate; 1101. second plate body penetration hole; 12. electric heating plate; 13. circular rubber sealing strip; 14. sealing cover plate; 15. circular handle. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0060] Embodiment 1

[0061] In the prior art, for filtering the desulfurization waste liquid, it is necessary to separate the desulfurization waste liquid into solid and liquid. However, in a desulfurization waste liquid zero emission system disclosed in the Chinese utility model patent with announcement number CN209636048U, the filtering treatment of the desulfurization waste liquid is only a filtering process. Therefore, the filtering process is single, and after the waste liquid is filtered in this process, it still cannot be purified and turned into clean water.

[0062] In order to solve the above technical problems, the R&D personnel have adopted the following technical solutions, as follows:

[0063] like Figure 1-3 as well as Figure 7 As shown, the utility model provides a technical solution:

[0064] A double filtration device for desulfurization waste liquid in coal chemical production, comprising:

[0065] A waste liquid filter box 1, the top of the waste liquid filter box 1 is provided with a waste liquid feeding pipe 101, the waste liquid feeding pipe 101 is used to be connected with a discharge pipe of desulfurized waste liquid, so that the desulfurized waste liquid can flow into the inner cavity of the waste liquid filter box 1, and a desulfurizer feeding pipe 102 is connected to the side wall of the waste liquid feeding pipe 101. When the desulfurized waste liquid is transported into the waste liquid feeding pipe 101, the desulfurizer can be added into the desulfurizer feeding pipe 102. After the desulfurizer enters the desulfurizer feeding pipe 102, it can slide into the waste liquid feeding pipe 101 and be mixed into the desulfurized waste liquid;

[0066] Among them, the desulfurizing agent can be selected from ferric hydroxide powder, calcium hydroxide powder, and sodium hydroxide powder;

[0067] Among them, after the iron hydroxide powder, calcium hydroxide powder and sodium hydroxide powder are mixed into the desulfurization waste liquid, the sulfide in the waste liquid can react with the metal ions in the reagent to form a precipitate, thereby removing the sulfide in the waste liquid;

[0068] The waste liquid filter box 1 has a waste liquid discharge pipe 103 at the bottom, and a closing portion 1031 at the bottom. The side wall of the waste liquid discharge pipe 103 is connected with a plurality of discharge branches 104, and each discharge branch 104 is fixedly installed with a discharge valve 105.

[0069] The filter structure 3 is installed in the middle of the inner cavity of the waste liquid filter box 1;

[0070] A stirring member 6, which is installed at the upper part of the inner cavity of the waste liquid filter box 1;

[0071] The stirring member 6 is composed of a rotating shaft 601 and a plurality of stirring wing rods 602 fixedly mounted on the side wall of the rotating shaft 601;

[0072] The motor 7 is fixedly mounted on one side of the top of the waste liquid filter box 1, and the output shaft of the motor 7 passes through the top of the waste liquid filter box 1 downward and extends to the top of the inner cavity of the waste liquid filter box 1;

[0073] A driving pulley 8, which is fixedly mounted on the output shaft of the motor 7;

[0074] A driven pulley 9, which is fixedly mounted on one end of the top of the rotating shaft 601;

[0075] A transmission belt 10 is sleeved and mounted on the driving pulley 8 and the driven pulley 9;

[0076] Wherein, the driving pulley 8 and the driven pulley 9 are on the same horizontal plane; and

[0077] The second activated carbon adsorption plate 11 is fixedly mounted at the lower part of the inner cavity of the waste liquid filter box 1 .

[0078] In this embodiment, after the desulfurized waste liquid and the desulfurizer mixed in the waste liquid enter the waste liquid filter box 1, the motor 7 is started, and the motor 7 can drive the rotation of the driving pulley 8 through its output shaft, and the driving pulley 8 drives the rotation of the driven pulley 9 through the transmission of the transmission belt 10. The driven pulley 9 synchronously drives the rotation of the stirring member 6 when rotating. When the stirring member 6 rotates, the waste liquid and the desulfurizer mixed in the waste liquid can be fully mixed and stirred, so that the metal ions in the desulfurizer can fully react with the sulfide in the waste liquid and generate precipitates to purify the waste liquid;

[0079] After the mixing and stirring is completed, the motor 7 can be turned off;

[0080] When the waste liquid and the desulfurizer have fully reacted, in order to separate the reaction precipitate, the reaction liquid will gradually permeate downward through the filtering structure 3, and the precipitate in the reaction liquid can be separated by the filtering structure 3;

[0081] The reaction liquid separated by the filtering structure 3 is formed into clean water. The clean water passing through the filtering structure 3 continues to flow downward and flows to the second activated carbon adsorption plate 11. The clean water flowing to the second activated carbon adsorption plate 11 will gradually penetrate downward through the second activated carbon adsorption plate 11. When the clean water penetrates through the second activated carbon adsorption plate 11, some harmful substances in the clean water will be adsorbed by the second activated carbon adsorption plate 11, thereby achieving secondary purification.

[0082] The purified water will flow to the bottom of the inner cavity of the waste liquid filter box 1. At this time, each drain valve 105 is unscrewed to keep each drain branch pipe 104 unobstructed. The reaction liquid at the bottom of the inner cavity of the waste liquid filter box 1 will be discharged outward through each drain branch pipe 104. After the drainage is completed, each drain valve 105 can be tightened again. Among them, when each drain branch pipe 104 is drained at the same time, the drainage efficiency can be effectively improved.

[0083] In this embodiment, the filtering device can effectively separate the solid and liquid of the treated wastewater. At the same time, the clean water formed after separation can also be secondary purified by the second activated carbon adsorption plate 11, thereby effectively solving the problem of a single filtering process and realizing double filtration of the wastewater.

[0084] The purified water after secondary purification can also be discharged to the outside through multiple drainage branches 104 at the same time, thereby effectively improving the drainage efficiency.

[0085] Embodiment 2

[0086] like Figure 1-9 As shown, based on the first embodiment, the following improvements are made:

[0087] Further, such as Figure 1 and Figure 4 As shown, the bottom and top of the rotating shaft 601 are respectively sleeved with a lower rectangular fixing frame 4 and an upper rectangular fixing frame 5, the outer frames of the lower rectangular fixing frame 4 and the upper rectangular fixing frame 5 are fixedly installed on the inner wall of the waste liquid filter box 1, the inner ring of the lower rectangular fixing frame 4 is rotatably connected to the bottom end of the rotating shaft 601, and the inner ring of the upper rectangular fixing frame 5 is rotatably connected to the top end of the rotating shaft 601.

[0088] In this embodiment, after the lower rectangular fixing frame 4 and the upper rectangular fixing frame 5 are fixedly installed in the inner cavity of the waste liquid filter box 1, the stirring member 6 is rotatably installed between the lower rectangular fixing frame 4 and the upper rectangular fixing frame 5, and the lower rectangular fixing frame 4 and the upper rectangular fixing frame 5 can support the stirring member 6 in the inner cavity of the waste liquid filter box 1.

[0089] Further, such as Figure 1 As shown, the second activated carbon adsorption plate 11 is provided with a plurality of second plate body penetration holes 1101 .

[0090] In this embodiment, the clean water can penetrate downward through the second plate body penetration holes 1101, and each second plate body penetration hole 1101 is used to increase the speed and efficiency of the clean water penetrating downward.

[0091] Further, such as Figure 1 As shown, one end of the top of the desulfurizer feeding pipe 102 is tilted upward. In this embodiment, when one side of the top of the desulfurizer feeding pipe 102 is tilted upward, it is beneficial for the desulfurizer to slide into the waste liquid feeding pipe 101 better and mix with the desulfurized waste liquid.

[0092] Further, such as Figure 7 As shown, a plurality of drainage branch pipes 104 are circumferentially distributed on the side wall of the waste liquid discharge pipe 103, and a bottom end of each drainage branch pipe 104 is inclined downward.

[0093] In this embodiment, when the bottom end of each drainage branch pipe 104 is tilted downward, the drainage work can be better completed.

[0094] Embodiment 3

[0095] like Figure 1-9 As shown, the difference from the first embodiment is that:

[0096] The filter structure 3 in the filter device can also be arranged to be detachable so as to facilitate its disassembly, cleaning or replacement at any time.

[0097] like Figure 1 as well as Figure 8 As shown, a through groove 106 is provided on one side wall of the waste liquid filter box 1 and at a position corresponding to the filter structure 3, and a circular rubber sealing strip 13 is embedded in the through groove 106;

[0098] A sealing cover plate 14 is embedded in the circular rubber sealing strip 13, and a circular handle 15 is fixedly mounted on the outer side wall of the sealing cover plate 14;

[0099] The filter structure 3 is detachably installed in the inner cavity of the waste liquid filter box 1 .

[0100] In this embodiment, the sealing cover 14 can be opened by pulling the circular handle 15. When the sealing cover 14 is opened, the filter structure 3 can be removed from the inner cavity of the waste liquid filter box 1 so as to clean or replace the filter structure 3. After the cleaning or replacement is completed, the filter structure 3 is reinstalled into the waste liquid filter box 1, and then the sealing cover 14 is embedded in the circular rubber sealing strip 13. The sealing cover 14 and the circular rubber sealing strip 13 are interference fit. Therefore, under the action of the circular rubber sealing strip 13, water seepage can be avoided.

[0101] Specifically, Figure 1 As shown, linear guide rails 2 are installed on both sides of the filter structure 3, and the two linear guide rails 2 are fixedly installed on the opposite side walls of the inner cavity of the waste liquid filter box 1;

[0102] like Figure 5-6 As shown, the filter structure 3 includes a first activated carbon adsorption plate 301, which is plugged and installed between the two linear guide rails 2. The upper surface and the lower surface of the first activated carbon adsorption plate 301 are both fitted with an ultrafiltration membrane 302. The above is a disassembly method between the filter structure 3 and the two linear guide rails 2;

[0103] In this embodiment, the first activated carbon adsorption plate 301 can also perform preliminary purification on the reaction liquid during the process of filtering the reaction liquid.

[0104] like Fig. 9 As shown, after the sealing cover 14 is opened, the filter structure 3 can be pulled outwards. After the filter structure 3 is pulled outwards, a water pipe is extended into the waste liquid filter box 1 to flush the second activated carbon adsorption plate 11.

[0105] More specifically, Figure 6 As shown, a plurality of first plate body penetration holes 3011 are formed on the first activated carbon adsorption plate 301 .

[0106] In this embodiment, the clean water can penetrate downward through the first activated carbon adsorption plates 301 , and each first activated carbon adsorption plate 301 is used to increase the speed and efficiency of the clean water penetrating downward.

[0107] More specifically, Figure 5-6 As shown, the thickness of the two ultrafiltration membranes 302 is 2-5 mm.

[0108] In this embodiment, when the thickness of the two ultrafiltration membranes 302 is 2-5 mm, the filtering effect on the reaction liquid is better.

[0109] Embodiment 4

[0110] like Figure 1-9 As shown, based on the first embodiment, the following improvements are made:

[0111] Further, such as Figure 1-3 as well as Fig. 9 As shown, electric heating plates 12 are fixedly mounted on opposite outer side walls of the waste liquid filter box 1 .

[0112] In this embodiment, during the process of mixing and stirring the waste liquid by the stirring element 6, the two electric heating plates 12 can be powered on for heating. When the two electric heating plates 12 are powered on to heat the two side walls of the waste liquid filter box 1, the heat on the body of the waste liquid filter box 1 will be transferred to the waste liquid in the waste liquid filter box 1, so that the stirred waste liquid can be heated. When the waste liquid is heated, the sulfide in the waste liquid can better react with the metal ions in the reagent to shorten the reaction time between the two.

[0113] In summary, the workflow of the utility model is:

[0114] like Figure 1-9 As shown, after the desulfurized waste liquid and the desulfurizer mixed in the waste liquid enter the waste liquid filter box 1, the motor 7 is started, and the motor 7 can drive the rotation of the driving pulley 8 through its output shaft, and the driving pulley 8 drives the rotation of the driven pulley 9 through the transmission of the transmission belt 10. The driven pulley 9 synchronously drives the rotation of the stirring member 6 when rotating. When the stirring member 6 rotates, the waste liquid and the desulfurizer mixed in the waste liquid can be fully mixed and stirred, so that the metal ions in the desulfurizer can fully react with the sulfide in the waste liquid and generate precipitates to purify the waste liquid;

[0115] After the mixing and stirring is completed, the motor 7 can be turned off;

[0116] When the waste liquid and the desulfurizer have fully reacted, in order to separate the reaction precipitate, the reaction liquid will gradually permeate downward through the filtering structure 3, and the precipitate in the reaction liquid can be separated by the filtering structure 3;

[0117] The reaction liquid separated by the filtering structure 3 is formed into clean water. The clean water passing through the filtering structure 3 continues to flow downward and flows to the second activated carbon adsorption plate 11. The clean water flowing to the second activated carbon adsorption plate 11 will gradually penetrate downward through the second activated carbon adsorption plate 11. When the clean water penetrates through the second activated carbon adsorption plate 11, some harmful substances in the clean water will be adsorbed by the second activated carbon adsorption plate 11, thereby achieving secondary purification.

[0118] The purified water will flow to the bottom of the inner cavity of the waste liquid filter box 1. At this time, each drain valve 105 is unscrewed to keep each drain branch pipe 104 unobstructed. The reaction liquid at the bottom of the inner cavity of the waste liquid filter box 1 will be discharged outward through each drain branch pipe 104. After the drainage is completed, each drain valve 105 can be tightened again. Among them, when each drain branch pipe 104 is drained at the same time, the drainage efficiency can be effectively improved.

[0119] The filter structure 3 in the filter device can also be arranged to be detachable so as to facilitate its disassembly, cleaning or replacement at any time.

[0120] A through groove 106 is provided on one side wall of the waste liquid filter box 1 and at the corresponding filter structure 3, a circular rubber sealing strip 13 is embedded in the through groove 106, a sealing cover plate 14 is embedded in the circular rubber sealing strip 13, a circular handle 15 is fixedly installed on the outer side wall of the sealing cover plate 14, the filter structure 3 is detachably installed in the inner cavity of the waste liquid filter box 1, and the sealing cover plate 14 can be opened by pulling the circular handle 15. When the sealing cover plate 14 is opened, the filter structure 3 can be removed from the inner cavity of the waste liquid filter box 1, so as to clean the filter structure 3 or replace the filter structure 3. After cleaning or replacing, the filter structure 3 is reinstalled into the waste liquid filter box 1, and then the sealing cover plate 14 is embedded in the circular rubber sealing strip 13, wherein the sealing cover plate 14 and the circular rubber sealing strip 13 are interference fit;

[0121] The filtration structure 3 includes a first activated carbon adsorption plate 301, which is inserted and installed between the two linear guide rails 2. The upper surface and the lower surface of the first activated carbon adsorption plate 301 are both fitted with an ultrafiltration membrane 302. The first activated carbon adsorption plate 301 can also perform preliminary purification on the reaction liquid during the filtering process of the reaction liquid. After the sealing cover plate 14 is opened, the filtration structure 3 can be pulled outward. After the filtration structure 3 is pulled outward, the water pipe is extended into the waste liquid filter box 1, and the second activated carbon adsorption plate 11 can also be rinsed.

[0122] During the process of mixing and stirring the waste liquid by the stirring element 6, the two electric heating plates 12 can be powered on for heating. When the two electric heating plates 12 are powered on to heat the two side walls of the waste liquid filter box 1, the heat on the body of the waste liquid filter box 1 will be transferred to the waste liquid in the waste liquid filter box 1, so that the stirred waste liquid can be heated. When the waste liquid is heated, the sulfide in the waste liquid can better react with the metal ions in the reagent to shorten the reaction time of the two.

[0123] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0124] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0125] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double filtration device for desulfurization waste liquid in coal chemical production, characterized in that: include: A waste liquid filter box (1), wherein the top of the waste liquid filter box (1) is provided with a waste liquid feeding pipe (101), the side wall of the waste liquid feeding pipe (101) is connected to a desulfurizing agent feeding pipe (102), the bottom of the waste liquid filter box (1) is provided with a waste liquid discharge pipe (103), the bottom of the waste liquid discharge pipe (103) is provided with a closing portion (1031), the side wall of the waste liquid discharge pipe (103) is connected to a plurality of discharge branch pipes (104), and each of the discharge branch pipes (104) is fixedly mounted with a discharge valve (105); A filter structure (3), wherein the filter structure (3) is installed in the middle of the inner cavity of the waste liquid filter box (1); A stirring member (6), the stirring member (6) being mounted on an upper portion of the inner cavity of the waste liquid filter box (1); The stirring member (6) is composed of a rotating shaft (601) and a plurality of stirring wing rods (602) fixedly mounted on the side wall of the rotating shaft (601); A motor (7), the motor (7) being fixedly mounted on one side of the top of the waste liquid filter box (1), and the output shaft of the motor (7) penetrating downward from the top of the waste liquid filter box (1) and extending to the top of the inner cavity of the waste liquid filter box (1); A driving pulley (8), wherein the driving pulley (8) is fixedly mounted on an output shaft of the motor (7); A driven pulley (9), wherein the driven pulley (9) is fixedly mounted on one end of the top of the rotating shaft (601); A transmission belt (10), wherein the transmission belt (10) is sleeved and mounted on a driving pulley (8) and a driven pulley (9); and A second activated carbon adsorption plate (11), wherein the second activated carbon adsorption plate (11) is fixedly mounted at the lower part of the inner cavity of the waste liquid filter box (1).

2. A coal chemical production desulfurization waste liquid double filtration equipment according to claim 1, characterized in that: A lower rectangular fixing frame (4) and an upper rectangular fixing frame (5) are respectively sleeved and mounted on the bottom and top of the rotating shaft (601); the outer frames of the lower rectangular fixing frame (4) and the upper rectangular fixing frame (5) are both fixedly mounted on the inner side wall of the waste liquid filter box (1); the inner ring of the lower rectangular fixing frame (4) is rotatably connected to one end of the bottom of the rotating shaft (601); and the inner ring of the upper rectangular fixing frame (5) is rotatably connected to one end of the top of the rotating shaft (601).

3. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 1 is characterized in that: A through groove (106) is provided on one side wall of the waste liquid filter box (1) at a position corresponding to the filter structure (3), and a circular rubber sealing strip (13) is embedded in the through groove (106); The circular rubber sealing strip (13) is embedded with a sealing cover plate (14), and a circular handle (15) is fixedly mounted on the outer side wall of the sealing cover plate (14); The filtering structure (3) is detachably installed in the inner cavity of the waste liquid filtering box (1).

4. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 3 is characterized in that: Linear guide rails (2) are installed on both sides of the filtering structure (3), and the two linear guide rails (2) are respectively fixedly installed on opposite side walls of the inner cavity of the waste liquid filtering box (1); The filtering structure (3) comprises a first activated carbon adsorption plate (301), the first activated carbon adsorption plate (301) being inserted and installed between two linear guide rails (2), and the upper surface and the lower surface of the first activated carbon adsorption plate (301) being fitted with an ultrafiltration membrane (302); After the sealing cover plate (14) is opened, the filter structure (3) can be pulled outwards.

5. A coal chemical production desulfurization waste liquid double filtration equipment according to claim 4, characterized in that: The first activated carbon adsorption plate (301) is provided with a plurality of first plate body penetration holes (3011).

6. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 4, characterized in that: The thickness of the two ultrafiltration membranes (302) is 2-5 mm.

7. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 1 is characterized by: The second activated carbon adsorption plate (11) is provided with a plurality of second plate body penetration holes (1101).

8. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 1, characterized in that: The top end of the desulfurizing agent feeding pipe (102) is inclined upward.

9. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 1, characterized in that: The plurality of drainage branch pipes (104) are distributed circumferentially on the side wall of the waste liquid discharge pipe (103), and the bottom end of each drainage branch pipe (104) is inclined downward.

10. The double filtration equipment for desulfurization waste liquid in coal chemical production according to claim 1, characterized in that: Electric heating plates (12) are fixedly mounted on opposite outer side walls of the waste liquid filter box (1).

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