Tail gas absorption device for phosphorite beneficiation reagent

Abstract

The utility model belongs to the technical field of beneficiation reagent production equipment, and particularly relates to a tail gas absorption device for a phosphorite beneficiation reagent, which comprises an absorption tank, the surface of the absorption tank is fixedly connected with a gas inlet pipe, the absorption tank is provided with a spraying and mixing assembly, the spraying and mixing assembly comprises a liquid inlet pipe and a three-way pipe, and the liquid inlet pipe is connected with the three-way pipe. The upper end and the lower end of the liquid inlet pipe penetrate through and are fixedly connected with the absorption tank; waste gas generated in production is guided into the three-way pipe through the gas inlet pipe, the pump body extracts liquid caustic soda to circularly enter the spray head to be sprayed out to be mixed with the waste gas, the diffusion range of the waste gas and the liquid caustic soda is reduced through the three-way pipe, the mixing contact effect of the waste gas and the liquid caustic soda is improved, and hydrogen sulfide is fully absorbed by the liquid caustic soda.

Description

Technical Field

[0001] The utility model relates to the technical field of beneficiation reagent production equipment, in particular to a tail gas absorption device for phosphate ore beneficiation reagents. Background Technique

[0002] Phosphate ore beneficiation reagents mainly refer to collectors, frothers, inhibitors, flocculants, regulators, as well as extractants, matrix improvers for extraction, diluents, etc. used in hydrometallurgy, involving hundreds of various inorganic or organic compounds.

[0003] During the production of phosphate ore beneficiation reagents, tail gas may be generated. These gases contain both useful components that can be recycled and toxic components (hydrogen sulfide gas) that can harm the environment. These components vaporize into a gaseous state in a high-temperature environment. If these components are discharged into the air along with the tail gas, it will cause environmental pollution.

[0004] The existing Chinese patent with the publication number CN209362169U discloses a tail gas absorption device for beneficiation reagents, which includes a tank body, a driving device, a stirring device, and a discharging device. An air outlet is provided on the tank body, and the air outlet is connected to the discharging device. The discharging device consists of a recovery device and an absorption device. The recovery device includes a check valve, a pressure reducing valve, a pressure gauge, a condenser, a recovery pipe, and a second air outlet pipe. The second air outlet pipe is connected to the absorption device. The absorption device is an absorption tank, and a honeycomb-shaped buffer layer and a water circulation system are provided in the absorption tank.

[0005] In view of the above and related existing technologies, the inventor believes that the following defects often exist: This device absorbs hydrogen sulfide by contacting cooling water with the waste gas, but there are no corresponding purification measures for other harmful gases in the waste gas, and improvement is needed. Therefore, a tail gas absorption device for phosphate ore beneficiation reagents is proposed to solve the above problems. Content of the Utility Model

[0006] In order to make up for the deficiencies of the existing technology and solve the above-mentioned technical problems, the utility model proposes a tail gas absorption device for phosphate ore beneficiation reagents.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A tail gas absorption device for phosphate ore beneficiation agents described in the present utility model includes an absorption tank. A gas inlet pipe is fixedly connected to the surface of the absorption tank. A spray mixing assembly is installed on the absorption tank. The spray mixing assembly includes a liquid inlet pipe and a tee pipe. The upper and lower ends of the liquid inlet pipe respectively penetrate and are fixedly connected to the absorption tank. A pump body is installed on the liquid inlet pipe. A spray head is fixedly connected to the inner top end of the tee pipe. The top end of the liquid inlet pipe is fixedly connected to the spray head. One end of the gas inlet pipe located inside the absorption tank is fixedly connected to the side end of the tee pipe. Liquid caustic soda is added inside the absorption tank. One end of the gas inlet pipe is connected to the phosphate ore beneficiation agent production equipment. During the preparation of phosphate ore beneficiation agents, hydrogen sulfide gas will be generated. Generally, hydrogen sulfide gas is absorbed by liquid caustic soda, and sodium sulfide or sodium bisulfide is generated after absorption. The waste gas generated during production is introduced into the tee pipe through the gas inlet pipe. At the same time, the pump body extracts liquid caustic soda and circulates it into the spray head to be sprayed and mixed with the waste gas. Moreover, the waste gas and liquid caustic soda flow inside the tee pipe. The diffusion range of the waste gas and liquid caustic soda is reduced through the tee pipe, improving the mixing and contact effect between the two, so that hydrogen sulfide is fully absorbed by the liquid caustic soda.

[0008] Preferably, a spiral pipe is fixedly connected to the bottom of the tee pipe, and the bottom end of the spiral pipe is higher than the liquid level height of the liquid caustic soda. The liquid caustic soda and the waste gas enter the spiral pipe after passing through the tee pipe, extending the mixing path, reducing the mixing space required by the device, and further improving the absorption effect of the liquid caustic soda on hydrogen sulfide.

[0009] Preferably, an adding end is fixedly connected to the side wall of the absorption tank, and liquid caustic soda can be added through the adding end.

[0010] Preferably, a liquid level sensor is fixedly connected to the inside of the absorption tank to detect the liquid level height of the liquid caustic soda.

[0011] Preferably, a purification assembly is installed above the inside of the absorption tank. The purification assembly includes a partition plate and two threaded gas outlet ports. Air inlet ends are respectively installed on both sides of the partition plate. After the waste gas is discharged from the spiral pipe, it moves upward and passes through the air inlet end, air permeable holes and activated carbon filter layer in sequence. After the remaining harmful gases in the waste gas are adsorbed by the activated carbon filter layer, it is discharged. By alternately operating two electromagnetic valves, the activated carbon filter layers inside the two filter cartridges can be alternately used for filtration, realizing the replacement of the activated carbon filter layer without stopping the machine.

[0012] Preferably, the two threaded gas outlet ports are symmetrically opened at the top of the absorption tank.

[0013] Preferably, an electromagnetic valve is installed on the air inlet end. A connecting pipe is fixedly connected to the top of the partition plate corresponding to the air inlet end, and the top end of the connecting pipe is fixedly connected to the inner wall of the absorption tank.

[0014] Preferably, a filter cylinder is internally threadedly connected to the threaded air outlet, and air-permeable holes are formed at the bottom of the filter cylinder. An activated carbon filter layer is installed inside the filter cylinder. When replacing the activated carbon filter layer, it can be quickly disassembled by rotating the filter cylinder. Subsequently, by rotating and removing the threaded limit ring, the activated carbon filter layer can be replaced.

[0015] Preferably, a threaded groove is tapped on the upper side wall inside the filter cylinder, and a threaded limit ring is threadedly connected to the threaded groove. The activated carbon filter layer is limited by the threaded limit ring.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, the waste gas generated during production is introduced into the tee through the inlet pipe. At the same time, the pump body extracts liquid caustic soda and circulates it into the spray head for spraying and mixing with the waste gas. The diffusion range of the waste gas and the liquid caustic soda is reduced through the tee, improving the mixing and contact effect between the two, so that hydrogen sulfide is fully absorbed by the liquid caustic soda.

[0018] 2. After the waste gas is discharged from the spiral pipe and moves upward, the remaining harmful gases in the waste gas are adsorbed by the activated carbon filter layer and then discharged. By alternately operating the two solenoid valves, the activated carbon filter layers inside the two filter cylinders can be alternately used for filtration, realizing the replacement of the activated carbon filter layer without shutting down the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a sectional view of the absorption tank of the present utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the spray mixing assembly of the present utility model;

[0023] Figure 4 For the present utility model Figure 2 Schematic diagram of structure A;

[0024] Figure 5 It is a schematic diagram of the unfolded structure of the purification assembly of the present utility model.

[0025] In the figure: 1. Absorption tank; 2. Inlet pipe; 3. Spray mixing assembly; 31. Liquid inlet pipe; 32. Pump body; 33. Three-way pipe; 34. Nozzle; 35. Spiral pipe; 4. Adding end; 5. Liquid level sensor; 6. Purification assembly; 61. Partition board; 62. Threaded air outlet; 63. Air inlet end; 64. Solenoid valve; 65. Connecting pipe; 66. Filter cartridge; 67. Vent hole; 68. Activated carbon filter layer; 69. Threaded limit ring. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1: Please refer to Figures 1-3 As shown in the figure, a tail gas absorption device for phosphorus ore beneficiation agents includes an absorption tank 1. An inlet pipe 2 is fixedly connected to the surface of the absorption tank 1. A spray mixing assembly 3 is installed on the absorption tank 1. The spray mixing assembly 3 includes a liquid inlet pipe 31 and a three-way pipe 33. The upper and lower ends of the liquid inlet pipe 31 respectively penetrate and are fixedly connected to the absorption tank 1. A pump body 32 is installed on the liquid inlet pipe 31. A nozzle 34 is fixedly connected to the inner top of the three-way pipe 33. The top end of the liquid inlet pipe 31 is fixedly connected to the nozzle 34. One end of the inlet pipe 2 inside the absorption tank 1 is fixedly connected to the side end of the three-way pipe 33. Liquid caustic is added inside the absorption tank 1. One end of the inlet pipe 2 is connected to the phosphorus ore beneficiation agent production equipment. During the preparation of phosphorus ore beneficiation agents, hydrogen sulfide gas will be generated. Generally, hydrogen sulfide gas is absorbed by liquid caustic, and sodium sulfide or sodium hydrosulfide is generated after absorption. The waste gas generated during production is introduced into the three-way pipe 33 through the inlet pipe 2. At the same time, the pump body 32 pumps liquid caustic to circulate into the nozzle 34 and spray out to mix with the waste gas. The waste gas and liquid caustic flow inside the three-way pipe 33. The diffusion range of the waste gas and liquid caustic is reduced through the three-way pipe 33, improving the mixing and contact effect between the two, so that hydrogen sulfide is fully absorbed by the liquid caustic.

[0028] The bottom of the three-way pipe 33 is fixedly connected with a spiral pipe 35, and the bottom end of the spiral pipe 35 is higher than the liquid level height of the liquid caustic. The liquid caustic and waste gas enter the spiral pipe 35 after passing through the three-way pipe 33, extending the mixing path and further improving the absorption effect of the liquid caustic on hydrogen sulfide.

[0029] An adding end 4 is fixedly connected to the side wall of the absorption tank 1, and liquid caustic can be added through the adding end 4.

[0030] A liquid level sensor 5 is fixedly connected inside the absorption tank 1 to detect the liquid level height of the liquid caustic.

[0031] Embodiment 2: Compared with Embodiment 1, please refer to Figures 4-5 As shown, the present utility model provides another implementation manner. A purification component 6 is installed above the interior of the absorption tank 1. The purification component 6 includes a partition plate 61 and two groups of threaded air outlets 62. Intake ends 63 are respectively installed on both sides of the partition plate 61. The waste gas moves upward after being discharged from the spiral tube 35, and successively passes through the intake ends 63, air permeation holes 67 and the activated carbon filter layer 68, and is discharged after the remaining harmful gases in the waste gas are adsorbed by the activated carbon filter layer 68. By alternately operating the two solenoid valves 64, the activated carbon filter layers 68 inside the two filter cartridges 66 can be alternately used for filtration, so as to realize the replacement of the activated carbon filter layer 68 without shutting down the machine.

[0032] The two groups of threaded air outlets 62 are symmetrically arranged at the top of the absorption tank 1.

[0033] A solenoid valve 64 is installed on the intake end 63. A connecting pipe 65 is fixedly connected to the top of the partition plate 61 corresponding to the intake end 63, and the top end of the connecting pipe 65 is fixedly connected to the inner wall of the absorption tank 1.

[0034] The inside of the threaded air outlet 62 is threadedly connected with a filter cartridge 66, and air permeation holes 67 are opened at the bottom of the filter cartridge 66. An activated carbon filter layer 68 is installed inside the filter cartridge 66. When replacing the activated carbon filter layer 68, it can be quickly disassembled by rotating the filter cartridge 66, and then the threaded limit ring 69 is rotated and removed to replace the activated carbon filter layer 68.

[0035] Threaded grooves are tapped on the upper side wall inside the filter cartridge 66, and a threaded limit ring 69 is threadedly connected to the threaded grooves to limit the activated carbon filter layer 68 by means of the threaded limit ring 69.

[0036] For those skilled in the art, all the electrical components in this case are connected to their adapted power supplies through wires, and appropriate controllers should be selected according to the actual situation and electrically connected to the pump body 32 and the liquid level sensor 5. And the controller is electrically connected to a display module for displaying the liquid level height to meet the control requirements. For the specific connection and control sequence, the electrical connection should be completed according to the sequence of the electrical components working successively in the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0037] Working principle: One end of the intake pipe 2 is connected to the phosphorous ore beneficiation reagent production equipment. The waste gas generated during production is introduced into the tee pipe 33 through the intake pipe 2. At the same time, the pump body 32 pumps liquid caustic soda to circulate into the spray head 34 and spray out to mix with the waste gas. The waste gas and the liquid caustic soda flow inside the tee pipe 33. The diffusion range of the waste gas and the liquid caustic soda is reduced through the tee pipe 33, improving the mixing and contact effect between the two, so that hydrogen sulfide is fully absorbed by the liquid caustic soda. The liquid caustic soda and the waste gas enter the spiral pipe 35 after passing through the tee pipe 33, extending the mixing path and further improving the absorption effect of the liquid caustic soda on hydrogen sulfide.

[0038] After the waste gas is discharged from the spiral pipe 35, it moves upward, successively passes through the intake end 63, the air permeable holes 67 and the activated carbon filter layer 68, and is discharged after the remaining harmful gases in the waste gas are adsorbed by the activated carbon filter layer 68. By alternately operating the two groups of solenoid valves 64, the activated carbon filter layers 68 inside the two groups of filter cartridges 66 can be alternately used for filtration, realizing the replacement of the activated carbon filter layer 68 without shutting down the machine.

[0039] When replacing the activated carbon filter layer 68, it can be quickly disassembled by rotating the filter cartridge 66. Subsequently, rotate and remove the threaded limit ring 69, and then the activated carbon filter layer 68 can be replaced.

[0040] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A tail gas absorption device for phosphate ore dressing reagents, comprising an absorption tank (1), characterized in that: An air inlet pipe (2) is fixedly connected to the surface of the absorption tank (1). A spray mixing assembly (3) is installed on the absorption tank (1). The spray mixing assembly (3) comprises a liquid inlet pipe (31) and a three-way pipe (33). The upper and lower ends of the liquid inlet pipe (31) respectively penetrate through and are fixedly connected to the absorption tank (1). A pump body (32) is installed on the liquid inlet pipe (31). A spray head (34) is fixedly connected to the top end of the three-way pipe (33). The top end of the liquid inlet pipe (31) is fixedly connected to the spray head (34). One end of the air inlet pipe (2) located inside the absorption tank (1) is fixedly connected to the side end of the three-way pipe (33). Liquid alkali is added to the inside of the absorption tank (1).

2. The tail gas absorption device for phosphate ore dressing reagent according to claim 1 is characterized in that: The bottom of the three-way pipe (33) is fixedly connected to a spiral pipe (35), and the bottom end of the spiral pipe (35) is higher than the liquid level of the liquid caustic soda.

3. The tail gas absorption device for phosphate ore dressing reagent according to claim 1 is characterized in that: The side wall of the absorption tank (1) is fixedly connected with a adding end (4).

4. The tail gas absorption device for phosphate ore dressing reagent according to claim 1 is characterized in that: A liquid level sensor (5) is fixedly connected to the interior of the absorption tank (1).

5. The tail gas absorption device for phosphate ore dressing reagent according to claim 1 is characterized in that: A purification component (6) is installed above the inside of the absorption tank (1), and the purification component (6) comprises a partition plate (61) and two groups of threaded air outlets (62), and air inlet ends (63) are respectively installed on both sides of the partition plate (61).

6. The tail gas absorption device for phosphate ore dressing reagent according to claim 5 is characterized in that: The two groups of threaded air outlets (62) are symmetrically opened on the top of the absorption tank (1).

7. The tail gas absorption device for phosphate ore dressing reagent according to claim 5 is characterized in that: A solenoid valve (64) is installed on the air inlet end (63); a connecting pipe (65) is fixedly connected to the top of the partition plate (61) corresponding to the air inlet end (63); and the top end of the connecting pipe (65) is fixedly connected to the inner wall of the absorption tank (1).

8. The tail gas absorption device for phosphate ore dressing reagent according to claim 6 is characterized in that: The threaded air outlet (62) is internally threadedly connected to a filter cartridge (66), and a vent hole (67) is provided at the bottom of the filter cartridge (66). An activated carbon filter layer (68) is installed inside the filter cartridge (66).

9. The tail gas absorption device for phosphate ore dressing reagent according to claim 8, characterized in that: The inner upper side wall of the filter cartridge (66) is tapped to form a thread groove, and the thread groove is threadedly connected to a threaded limiting ring (69).

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