Persulfate dust removal device

Abstract

The utility model relates to a persulfate dust removal device, which comprises a semi-finished product bin, a centrifugal machine and an exhaust pipe are arranged at the top of the semi-finished product bin; a gas inlet pipe at the lower part of the absorption tower is communicated with the exhaust pipe through a first pipeline, a liquid discharge pipe is arranged at the bottom of the absorption tower, a gas outlet pipe is arranged at the top of the absorption tower, the gas outlet pipe is communicated with the induced draft fan and is used for driving gas to enter the absorption tower and be discharged from the gas outlet pipe, and a spraying mechanism is arranged in the absorption tower and is used for spraying liquid to absorb persulfate in air; the absorption liquid tank is communicated with the liquid discharge pipe through a second pipeline, the bottom of the absorption liquid tank is communicated with a spraying mechanism in the absorption tower through a third pipeline, and an absorption liquid pump is arranged on the third pipeline and used for conveying liquid in the absorption liquid tank to the spraying mechanism; the mother liquor tank is communicated with the third pipeline through a fourth pipeline and is used for storing a solution with the solubility reaching a preset value in the absorption liquid tank. The utility model provides a device for recovering and filtering persulfate dust in gas by adopting a spraying absorption means.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonium persulfate production, and relates to an absorption and processing device for dust with high humidity generated in the process of slurry separation. Background Art

[0002] In the production process of ammonium persulfate, the slurry needs to be centrifuged. This station mostly uses a filter cloth type dust control device for dust filtration. However, the filter cloth of this method is easy to clog and needs to be cleaned frequently. The dust control effect is average, the ventilation effect is average, and it is easy to cause dust to leak into the production site. In addition, the ammonium persulfate dust will accumulate heat and decompose during the accumulation process, generating a large amount of heat, and there is a risk of chemical material degradation. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a device which adopts spraying and absorption means to recover and filter persulfate dust in gas, thereby avoiding the phenomenon of heat accumulation and decomposition of dust on the filter cloth.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A persulfate dust removal device, comprising:

[0006] A semi-finished product silo, the top of which is provided with a centrifuge and an exhaust pipe for slurry separation;

[0007] An absorption tower, wherein the air inlet pipe at the lower part is connected to the exhaust pipe through a first pipeline, a liquid discharge pipe is provided at the bottom, and an air outlet pipe is provided at the top, wherein the air outlet pipe is connected to an induced draft fan and is used to drive the gas in the semi-finished product silo into the absorption tower and be discharged from the air outlet pipe, and a spray mechanism is provided in the absorption tower and is used to spray liquid to absorb persulfate in the air;

[0008] An absorption liquid tank, which is connected to the drain pipe through a second pipeline, and its bottom is connected to the spray mechanism in the absorption tower through a third pipeline, and an absorption liquid pump is provided on the third pipeline to transport the liquid in the absorption liquid tank to the spray mechanism;

[0009] The mother liquid tank is connected to the third pipeline through a fourth pipeline and is used to store the solution whose solubility reaches a preset value in the absorption liquid tank.

[0010] As an embodiment of the utility model, a second solenoid valve is provided on the fourth pipeline, and the second solenoid valve is opened to connect the third pipeline through the fourth pipeline, so that the absorption liquid pump can transport liquid to the spraying mechanism while transporting the liquid in the absorption liquid tank into the mother liquid tank.

[0011] As an implementation manner of the present utility model, a first solenoid valve is provided on the third pipeline between the absorption liquid tank and the absorption liquid pump. The top of the absorption liquid tank is communicated with a water source mechanism. When the liquid level in the absorption liquid tank is lower than a preset value, the first solenoid valve controls the flow rate of the third pipeline to decrease, and at the same time, the water source mechanism replenishes liquid into the absorption liquid tank; when the liquid level in the absorption liquid tank reaches the preset value, the water source mechanism stops replenishing liquid, and the first solenoid valve controls the flow rate of the third pipeline to resume.

[0012] As an implementation manner of the present utility model, a packing mechanism is arranged in the absorption tower. The packing mechanism includes a plurality of packing baskets arranged at intervals in the vertical direction, an inter-basket connecting column for connecting two adjacent packing baskets, a plurality of bottom support columns arranged on the lower end surface of the bottom packing basket, and a top column arranged on the top packing basket.

[0013] The lower end of the bottom support column abuts against the bottom of the absorption tower to support the packing mechanism.

[0014] The packing basket is filled with packing. The bottom plate of the packing basket is in a mesh shape, and the liquid sprayed by the spraying mechanism flows through the packing and then falls into the bottom of the absorption tower.

[0015] As an implementation manner of the present utility model, the spraying mechanism includes a plurality of spraying components arranged on the inter-basket connecting column and a spraying component arranged on the top column. The spraying component is connected to a liquid distributor arranged on the tower cover of the absorption tower through a hose. The liquid distributor connecting pipe of the liquid distributor protrudes from the top of the tower cover and is connected to the third pipeline.

[0016] As an implementation manner of the present utility model, the spraying component includes a plurality of adapters arranged in a radial pattern. The adapter is integrally in an L shape. Its vertical part is connected to the inter-basket connecting column or the top column. The end of its horizontal part is provided with a nozzle connecting seat for installing a nozzle. The top of the vertical part of the adapter is provided with a water injection connecting seat for communicating with the hose. A cavity communicating the nozzle connecting seat and the water injection connecting seat is opened in the adapter.

[0017] As an implementation manner of the present utility model, two wing plates are symmetrically arranged on both sides of the vertical part of the adapter. The wing plate is fixedly arranged on the inter-basket connecting column or the top column through a screw assembly.

[0018] As an implementation manner of the present utility model, the packing basket is integrally in a cylindrical shape corresponding to the inner diameter of the tower body of the absorption tower. A surrounding plate is arranged on the edge of the bottom plate of the packing basket. The surrounding plate and the bottom plate enclose a cylindrical cavity for containing the packing.

[0019] As an implementation manner of the present utility model, a lifting ring is arranged at the top of the top column for lifting the packing mechanism.

[0020] As an implementation manner of the present utility model, cross-shaped reinforcing ribs are arranged at the bottom of the bottom plate. The upper end of the inter-basket connecting column is connected to the cross intersection point of the reinforcing ribs, and the lower end of the inter-basket connecting column is connected to the bottom plate and corresponds to the cross intersection point of the reinforcing ribs;

[0021] The lower end of the top column is connected to the bottom plate and corresponds to the cross intersection point of the reinforcing ribs.

[0022] The beneficial effects produced by adopting the above technical solutions are as follows:

[0023] The absorption tower of the present application adopts a countercurrent absorption method to absorb ammonium persulfate dust. The absorbed absorption liquid can be recycled through the absorption liquid tank and the mother liquid tank, which increases the filtering effect of ammonium persulfate dust, can efficiently recycle the absorption liquid, and is more economical and energy-saving. Compared with other dry dust removal methods (such as filter cloth type), it can effectively prevent the thermal decomposition of dust and eliminate the occurrence of fires and accidents that harm people.

[0024] A packing mechanism can be hoisted and arranged in the absorption tower of the present application, and the contact area between the dust and the absorption liquid can be increased through the packing to increase the filtering effect. At the same time, the packing mechanism is a hoistable structure, which is convenient for later maintenance and overall cleaning.

[0025] The packing mechanism of the present application includes a plurality of packing baskets and corresponding multiple groups of spray components, which can perform stratified spray absorption to increase the absorption effect. In addition, ammonium persulfate absorbs heat when dissolved in water, and its dissolution form is better in the absorption liquid with a higher temperature. The absorption effect will decrease when the cooled absorption liquid falls into the lower layer. Therefore, the form of stratified spray increases the dissolution efficiency by ensuring that the temperature of the absorption liquid sprayed out of each layer is the same, and further improves the filtering effect of the absorption tower.

[0026] The present application can also be provided with multiple absorption towers connected in series from head to tail to further increase the filtering and absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the pipeline connection structure of this embodiment.

[0028] Figure 2 It is a schematic diagram of the structure of the absorption tower of this embodiment.

[0029] Figure 3 It is a schematic diagram of the internal structure of the absorption tower of this embodiment.

[0030] Figure 4 It is a schematic diagram of the structure of the packing mechanism of this embodiment.

[0031] Figure 5 is Figure 4 The structural schematic diagram of part A in

[0032] Figure 6 is Figure 4 The structural schematic diagram from another angle.

[0033] Wherein: 100 centrifuge; 200 semi-finished product bin; 201 conveying auger mechanism; 202 blanking port; 203 exhaust pipe; 300 absorption tower; 400 induced draft fan; 500 absorption liquid tank; 600 mother liquor tank; 601 transfer pipe; 700 first solenoid valve; 800 absorption liquid pump; 900 second solenoid valve; 1000 water source mechanism;

[0034] 1 tower body; 1-1 tower bottom; 1-2 air inlet pipe; 1-3 liquid discharge pipe; 1-4 air outlet pipe; 1-5 liquid distributor connecting pipe.

[0035] 2 packing basket; 2-1 enclosing plate; 2-2 bottom plate; 2-3 reinforcing rib;

[0036] 3 bottom support pillar; 4 connecting column between baskets;

[0037] 5 spraying assembly; 5-1 adapter; 5-2 nozzle connecting seat; 5-3 water injection connecting seat; 5-4 wing plate;

[0038] 6 top column; 6-1 lifting ring. Specific embodiments

[0039] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following describes the utility model clearly and completely with reference to specific embodiments.

[0040] Such as Figure 1 and Figure 2 shown, a persulfate dust removal device, which comprises:

[0041] A semi-finished product bin 200, on the top of which there is a centrifuge 100 for slurry separation and an exhaust pipe 203, and on the bottom of which there is a conveying auger mechanism 201, which can convey the centrifuged materials to the dryer station through the blanking port 202 of the conveying auger mechanism 201;

[0042] Absorption tower 300, the intake pipe 1-2 at its lower part is connected to the exhaust pipe 203 through the first pipeline, a drain pipe 1-3 is arranged at its bottom, and an outlet pipe 1-4 is arranged at its top. The outlet pipe 1-4 is connected to the induced draft fan 400 to drive the gas in the semi-finished product silo 200 into the absorption tower 300 and discharge it from the outlet pipe 1-4. After the discharged gas is detected to be qualified by the air detector arranged at the pipeline outlet, it can be discharged into the external environment. A spraying mechanism is arranged in the absorption tower 300 to spray liquid to absorb the persulfate dust in the gas;

[0043] Absorption liquid tank 500, which is connected to the drain pipe 1-3 through the second pipeline, and its bottom is connected to the spraying mechanism in the absorption tower 300 through the third pipeline. An absorption liquid pump 800 is arranged on the third pipeline to transport the liquid in the absorption liquid tank 500 to the spraying mechanism;

[0044] Mother liquid tank 600, which is connected to the third pipeline through the fourth pipeline, and is used to store the solution in the absorption liquid tank 500 whose solubility reaches the preset value.

[0045] See Figure 1 , a second solenoid valve 900 is arranged on the fourth pipeline. When the second solenoid valve 900 is opened, the third pipeline is connected through the fourth pipeline. Then, while the absorption liquid pump 800 transports liquid to the spraying mechanism, the liquid in the absorption liquid tank 500 is transported into the mother liquid tank 600. A transfer pipe 601 is arranged at the bottom of the mother liquid tank 600 to transfer and recycle the liquid after the mother liquid tank 600 is full of liquid.

[0046] See Figure 1 , a first solenoid valve 700 is arranged on the third pipeline between the absorption liquid tank 500 and the absorption liquid pump 800. The top of the absorption liquid tank 500 is connected to the water source mechanism. When the liquid level in the absorption liquid tank 500 is lower than the preset value, the first solenoid valve 700 controls the flow rate of the third pipeline to decrease, and at the same time the water source mechanism replenishes liquid into the absorption liquid tank 500; when the liquid level in the absorption liquid tank 500 reaches the preset value, the water source mechanism stops replenishing liquid, and the first solenoid valve 700 controls the flow rate of the third pipeline to resume. In this embodiment, liquid level sensors are arranged in both the mother liquid tank 600 and the absorption liquid tank 500 to monitor the water level in the tanks. Pressure relief valves are arranged at the tops of the mother liquid tank 600 and the absorption liquid tank 500, which can be used to discharge the gas in the tanks to adjust the air pressure. A hydrometer is arranged in the absorption liquid tank 500, which can be used to monitor whether the saturation degree of the absorption liquid reaches the preset value.

[0047] See Figure 3, a packing mechanism is arranged in the absorption tower 300. The packing mechanism includes a plurality of packing baskets 2 arranged at intervals vertically, an inter-basket connecting column 4 for connecting two adjacent packing baskets 2, a plurality of bottom foot supports 3 arranged on the lower end surface of the bottom packing basket 2, and a top column 6 arranged on the top packing basket 2. The lower end of the bottom foot support 3 abuts against the tower bottom (1-1) of the absorption tower 300 to support the packing mechanism.

[0048] See Figures 3 to 6 The packing basket 2 is filled with packing. The bottom plate 2-2 of the packing basket 2 is in a mesh shape. In this embodiment, a grid plate structure is adopted. Preferably, a riser pipe structure can be adopted. The liquid after absorbing the gas flows through the packing into the bottom plate 2-2 and then falls through the mesh holes / grids on the bottom plate 2-2. The liquid sprayed by the spraying mechanism flows through the packing and then falls into the bottom of the absorption tower 300.

[0049] For details, see Figure 4 and Figure 5 , the spraying mechanism includes a group of spraying components 5 arranged on the inter-basket connecting column 4 and a group of spraying components 5 arranged on the top column 6. The spraying component 5 is connected to a liquid distributor arranged on the tower cover of the absorption tower 300 through a hose. See Figure 3 The liquid distributor connecting pipe 1-5 of the liquid distributor protrudes from the top of the tower cover and is communicated with the third pipeline. In this embodiment, the liquid distributor is arranged on the lower end surface of the tower cover of the absorption tower 300. After hoisting the packing mechanism, the hose and the liquid distributor are connected, and then the tower cover is closed.

[0050] See Figure 5 , the spraying component 5 includes 4 groups of adapters 5 arranged radially. The adapter 5 is in an L shape as a whole. Its vertical part is connected to the inter-basket connecting column 4 or the top column 6. The end of its horizontal part is provided with a nozzle connecting seat 5-2 for installing a nozzle. The top of the vertical part of the adapter 5 is provided with a water injection connecting seat 5-3 for communicating with the hose. A cavity is formed in the adapter 5 to communicate the nozzle connecting seat 5-2 and the water injection connecting seat 5-3.

[0051] See Figure 5 , two wing plates 4 are symmetrically arranged on both sides of the vertical part of the adapter 5. The wing plates 4 are fixedly arranged on the inter-basket connecting column 4 or the top column 6 through screw assemblies. Specifically, through holes are formed in the wing plates 4, and threaded holes corresponding to the through holes of the wing plates 4 are formed in the inter-basket connecting column 4 or the top column 6 for passing through the screw assemblies.

[0052] See Figure 3 and Figure 4, the packing basket 2 is integrally in a cylindrical shape corresponding to the inner diameter of the tower body 1 of the absorption tower 300. A surrounding plate 2-1 is provided on the edge of the bottom plate 2-2 of the packing basket 2. The surrounding plate 2-1 and the bottom plate 2-2 enclose a cylindrical cavity for containing the packing.

[0053] In this embodiment, a lifting ring 6-1 is provided at the top of the top column 6 for lifting the packing mechanism.

[0054] See Figure 6 , a cross-shaped reinforcing rib 2-3 is provided at the bottom of the bottom plate 2-2. The upper end of the inter-basket connecting column 4 is connected to the cross intersection point of the reinforcing rib 2-3. The lower end of the inter-basket connecting column 4 is connected to the bottom plate 2-2 and corresponds to the cross intersection point of the reinforcing rib 2-3. The lower end of the top column 6 is connected to the bottom plate 2-2 and corresponds to the cross intersection point of the reinforcing rib 2-3. It is used to increase the overall connection strength of the packing mechanism.

[0055] Although the present invention 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 perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A persulfate dust removal device, characterized in that, It includes: A semi-finished product silo (200) with a centrifuge (100) for slurry separation and an exhaust pipe (203) provided at its top; An absorption tower (300), the intake pipe (1-2) at its lower part is connected to the exhaust pipe (203) through a first pipeline, a drain pipe (1-3) is provided at its bottom, and an outlet pipe (1-4) is provided at its top. The outlet pipe (1-4) is connected to a draft fan (400) to drive the gas in the semi-finished product silo (200) into the absorption tower (300) and discharge it from the outlet pipe (1-4). A spraying mechanism is provided in the absorption tower (300) to spray liquid to absorb persulfate dust in the gas; An absorption liquid tank (500) is connected to the drain pipe (1-3) through a second pipeline, and its bottom is connected to the spraying mechanism in the absorption tower (300) through a third pipeline. An absorption liquid pump (800) is provided on the third pipeline to transport the liquid in the absorption liquid tank (500) to the spraying mechanism; A mother liquor tank (600) is connected to the third pipeline through a fourth pipeline and is used to store the solution in the absorption liquid tank (500) whose solubility reaches a preset value.

2. The persulfate dust removal device according to claim 1, wherein A second solenoid valve (900) is provided on the fourth pipeline. When the second solenoid valve (900) is opened, the third pipeline is connected through the fourth pipeline. Thus, while the absorption liquid pump (800) transports liquid to the spraying mechanism, the liquid in the absorption liquid tank (500) is transported into the mother liquor tank (600).

3. The persulfate dust removal device according to claim 1, characterized in that, A first solenoid valve (700) is provided on the third pipeline between the absorption liquid tank (500) and the absorption liquid pump (800). The top of the absorption liquid tank (500) is connected to a water source mechanism. When the liquid level in the absorption liquid tank (500) is lower than the preset value, the first solenoid valve (700) controls the flow rate of the third pipeline to decrease, and at the same time the water source mechanism replenishes liquid into the absorption liquid tank (500); when the liquid level in the absorption liquid tank (500) reaches the preset value, the water source mechanism stops replenishing liquid, and the first solenoid valve (700) controls the flow rate of the third pipeline to resume.

4. The persulfate dust removal device according to claim 1, characterized in that, A packing mechanism is provided in the absorption tower (300). The packing mechanism includes a plurality of packing baskets (2) arranged vertically at intervals, an inter-basket connecting column (4) for connecting two adjacent packing baskets (2), a plurality of bottom foot supports (3) provided on the lower end surface of the bottom packing basket (2), and a top column (6) provided on the top packing basket (2); The lower end of the bottom foot support (3) abuts against the bottom (1-1) of the absorption tower (300) to support the packing mechanism; Packing is filled in the packing basket (2). The bottom plate (2-2) of the packing basket (2) is in a net shape. The liquid sprayed by the spraying mechanism flows through the packing and then falls into the bottom of the absorption tower (300).

5. The persulfate dust removal device according to claim 4, characterized in that, The spraying mechanism includes a number of spraying components (5) provided on the inter-basket connecting columns (4) and spraying components (5) provided on the top columns (6). The spraying components (5) are connected to a liquid distributor provided on the tower cover of the absorption tower (300) through hoses. The liquid distributor connecting pipe (1-5) of the liquid distributor protrudes from the top of the tower cover and is communicated with the third pipeline.

6. The persulfate dust removal device according to claim 5, characterized in that, The spraying component (5) includes a number of adapters (5-1) arranged in a radial pattern. The adapter (5-1) is integrally in an L shape. Its vertical part is connected to the inter-basket connecting column (4) or the top column (6). The end of its horizontal part is provided with a nozzle connecting seat (5-2) for installing a nozzle. The top of the vertical part of the adapter (5-1) is provided with a water injection connecting seat (5-3) for communicating with the hose. A cavity communicating the nozzle connecting seat (5-2) and the water injection connecting seat (5-3) is provided in the adapter (5-1).

7. The persulfate dust removal device according to claim 6, wherein Two wing plates (5-4) are symmetrically arranged on both sides of the vertical part of the adapter (5-1). The wing plates (5-4) are fixedly arranged on the inter-basket connecting column (4) or the top column (6) through screw assemblies.

8. The persulfate dust removal device according to claim 4, characterized in that, The packing basket (2) is integrally in a cylindrical shape corresponding to the inner diameter of the tower body (1) of the absorption tower (300). A surrounding plate (2-1) is provided on the edge of the bottom plate (2-2) of the packing basket (2). The surrounding plate (2-1) and the bottom plate (2-2) enclose a cylindrical cavity for containing the packing.

9. The persulfate dust removal device according to claim 4, characterized in that, A lifting ring (6-1) is provided on the top of the top column (6) for lifting the packing mechanism.

10. The persulfate dust removal device according to claim 4, characterized in that, Cross-shaped reinforcing ribs (2-3) are provided at the bottom of the bottom plate (2-2). The upper end of the inter-basket connecting column (4) is connected to the cross intersection of the reinforcing ribs (2-3). The lower end of the inter-basket connecting column (4) is connected to the bottom plate (2-2) and corresponds to the cross intersection of the reinforcing ribs (2-3); The lower end of the top column (6) is connected to the bottom plate (2-2) and corresponds to the cross intersection of the reinforcing ribs (2-3).

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