TWM647865U - Plate tower with acid gas removal - Google Patents

Abstract

The invention is a plate tower capable of removing acidic gases, which includes a desulfurization tower; a plurality of porous plates arranged at intervals in the desulfurization tower; and at least one parallel plate member, which includes a plurality of absorption plates and a plurality of supporting parts. , each absorption plate is parallel to each other and each support part is connected between each absorption plate, and the parallel plate is arranged in the desulfurization tower; a demister is arranged in the desulfurization tower and is located between the parallel plate and the outlet end; The doser is installed in the desulfurization tower and is located between the parallel plates and the mist eliminator; thereby, in addition to maintaining the function of SO ₂ removal in the existing plate tower, the new type can additionally remove SO ₃ , etc. The function of acid gas solves the environmental problem of white smoke produced by sintering. It also has the effect of not occupying additional on-site space and reducing cost increase.

Description

Plate tower with acid gas removal

The new system relates to a waste gas filtering device, in particular to a plate tower capable of removing acid gas.

Existing waste gas treatment devices commonly include wet magnesium process or sodium process plate towers, as shown in Figure 6. Its main structure includes a wet desulfurization absorption tower 90, a plurality of porous plates 91, and a demister. 92 and a dosing device 93. The wet desulfurization absorption tower 90 has an outlet end and an inlet end; each porous plate 91 is arranged at intervals in the wet desulfurization absorption tower 90; a demister 92 is arranged in the wet desulfurization absorption tower 90. The absorption tower 90 is located between the porous plate 91 and the outlet end; the dosing device 93 is provided in the wet desulfurization tower and is located between each porous plate 91 and the mist eliminator 92. The dosing device 93 is used to spray hydrogen oxide. Sodium or magnesium hydroxide.

However, although the aforementioned exhaust gas treatment device has a high removal rate (greater than 90%) of SO ₂ in sintering exhaust gas, it cannot remove acidic gases such as SO ₃ that cause sintering white smoke, resulting in wet flue gas removal. The SCR denitrification process in the latter part of the sulfur system (WFGD) generates salt particles such as ammonium sulfate, which causes the white smoke phenomenon in the sintering chimney that cannot be effectively eliminated. Therefore, the overall structure of the existing plate tower with the ability to remove acid gases has The problems and shortcomings mentioned above really need to be improved.

In view of the shortcomings and shortcomings of the existing technology, the present invention provides a plate tower capable of removing acid gases. By further adding at least one parallel plate member to the desulfurization tower, in addition to retaining the original SO ₂ removal function, it can also In addition, the purpose of removing acid gases such as SO ₃ is added.

In order to achieve the above-mentioned creative purposes, the technical means used in this new model is to design a plate tower with the ability to remove acid gases, which includes: a desulfurization tower with an internal space and an inlet port connected to the internal space. and an outlet end; a plurality of porous plates, which are arranged at intervals in the desulfurization tower; at least one parallel plate member, which includes a plurality of absorption plates and a plurality of support parts, each of the absorption plates is parallel to each other and each support part is connected to each absorption plate Between, the at least one parallel plate is disposed in the desulfurization tower; a mist eliminator, which is disposed in the desulfurization tower and is located between the at least one parallel plate and the outlet end; a doser, It is arranged in the desulfurization tower and between the at least one parallel plate and the mist eliminator.

Furthermore, in the plate tower with acid gas removal, the at least one parallel plate member has a concentric cylindrical structure, each of the absorption plates is arranged in a concentric circle, and each of the support parts is located between each of the absorption plates. between.

Furthermore, in the plate tower with acid gas removal, the at least one parallel plate member has a rectangular columnar structure, each of the absorption plates is a rectangular sheet, and each of the support parts is located between each of the absorption plates. .

Furthermore, in the plate tower with acid gas removal, the cross section of each support part is a continuous tooth-like structure.

Furthermore, in the plate tower with acid gas removal, each absorption plate is made of hygroscopic chemical fiber material.

Furthermore, in the plate tower with acid gas removal, the height of each of the at least one parallel plate member is 30 cm.

Furthermore, in the plate tower with acid gas removal, the spacing between the absorption plates is 1 to 5 mm.

Furthermore, in the plate tower with acid gas removal, each porous plate is a plate with a plurality of perforations, and the pore diameter of each perforation is 8~10mm.

Furthermore, the plate tower with acid gas removal further includes an opening and closing valve. The inlet end of the desulfurization tower has an input port, and the outlet end has an output port. The opening and closing valve is disposed on The output position of the desulfurization tower.

The advantage of this new type is that, in addition to maintaining the function of removing SO ₂ in the existing plate tower, it can additionally add the function of removing acidic gases such as SO ₃ , that is, replacing at least one layer of porous plates in the existing technology with parallel plates. , it can effectively remove acidic gases such as SO ₃ in the sintering waste gas, solve the environmental problem of white smoke produced by sintering, and also has the effect of not occupying additional on-site space and reducing the cost increase.

10:Desulfurization tower

11: Entrance port

111:Input port

12:Export end

121:Output port

13:Open and close valve

20:Porous plate

30: Parallel plates

30A: Parallel plates

31:Absorption board

31A:Absorption board

32: Support part

32A: Support part

40:demister

50:Doser

60: Medicine pool

61:Intake pipe

62: Bucket

63:First conveyor pipe

64: Potion Bucket

65:Second conveyor pipe

66: Circulation pump assembly

67: Drainage pipe

68: Cooling device

90: Wet desulfurization absorption tower

91:Porous plate

92:demister

93:Dosing device

Figure 1 is a three-dimensional appearance view of the new model.

Figure 2 is an appearance view of the new parallel plate component.

Figure 3 is an enlarged view of the new parallel plate component.

Figure 4 is an enlarged view of a parallel plate member according to another embodiment of the present invention.

Figure 5 is a schematic diagram of the use of this new type.

Figure 6 is a schematic diagram of the prior art.

The technical means adopted by the present invention to achieve the predetermined creative purpose will be further described below with reference to the drawings and preferred embodiments of the present invention.

Please refer to FIG. 1 . The novel plate tower for acid gas removal of the present invention includes a desulfurization tower 10 , a plurality of porous plates 20 , at least one parallel plate 30 , a demister 40 and a doser 50 .

Please refer to Figure 1. The desulfurization tower 10 has an internal space and an inlet end 11 and an outlet end 12 connected with the internal space. The inlet end 11 is located at the bottom of the desulfurization tower 10, and the outlet end 12 is located at the bottom of the desulfurization tower 10. At the top, the inlet end 11 has an input port 111, the outlet end 12 has an output port 121, and an on-off valve 13 is provided at the output port 121, but is not limited to this, and the on-off valve 13 may not be provided.

Each porous plate 20 is a plate with a plurality of perforations running through it. Specifically, the hole diameter is 8~10mm. The exhaust temperature after desulfurization is less than 60°C and the pressure loss is 30mmH ₂ O. However, this is not used as a porous plate 20. Limitation, this is a filter component in the prior art, and its detailed structure will not be described again. Each porous plate 20 is arranged at intervals in the desulfurization tower 10 .

Please refer to FIGS. 1 to 3 . The parallel plate member 30 includes a plurality of absorption plates 31 and a plurality of support parts 32 . Each absorption plate 31 is a plate body arranged parallel to each other and is made of hygroscopic chemical fiber material. Each support part 32 The absorbing plates 31 are connected to each other and fixed to each other so that the absorbing plates 31 are arranged at intervals, and the distance between the absorbing plates 31 is between 1 and 5 mm. In this embodiment, the desulfurization tower 10 is a cylindrical tower type, and the parallel plate member 30 is a concentric cylindrical structure with a height of 30cm and a pressure loss of 5mmH ₂ O. Specifically, each absorption plate 31 is cylindrical and is connected and fixed by each support portion 32. The support part 32 is a continuous tooth-like structure when viewed from a cross-section. The number of the parallel plate members 30 is two and is disposed in the desulfurization tower 10 between the porous plates 20. The whole is arranged at intervals, but this is not used as an example. limit, the form and number of the parallel plates 30 can be changed according to the user's needs; please refer to Figure 4. In other embodiments, when the desulfurization tower (not shown in the figure) is a rectangular column, the parallel plates 30 can be changed according to the user's needs. Each absorption plate 31A of the plate member 30A is a rectangular sheet, and each absorption plate 31A and each support portion 32A are staggered and stacked to form a rectangular columnar structure.

Please refer to FIG. 1 . The mist eliminator 40 is installed in the desulfurization tower 10 and is located between the parallel plate 30 and the outlet end 12 . The mist eliminator 40 is a standard component of the prior art, and its detailed structure will not be described again.

The doser 50 is installed in the desulfurization tower 10 and is located between the parallel plates and the demister 40. The doser 50 is a standard component of the prior art, and its detailed structure will not be described again.

Please refer to Figures 1, 3 and 5. When the new model is used, it is assembled on a medicine tank 60. One end of the medicine tank 60 is connected to an air inlet pipe 61, and a water bucket 62 is connected through a first delivery pipe 63. In the medicine pool 60, a medicine barrel 64 is connected to the medicine pool 60 through a second delivery pipe 65. The medicine barrel 64 contains water and magnesium oxide. One end of a circulation pump assembly 66 is connected to the doser 50, and the other end of the circulation pump assembly 66 is connected to the medicine tank 60. One end is connected to the chemical tank 60, a drainage pipe 67 is connected to the chemical tank 60, a cooling device 68 is provided in the chemical tank 60, the exhaust gas enters the chemical tank 60 through the air inlet pipe 61, and enters through the input port 111 of the desulfurization tower 10. , passes upward through each porous plate 20, parallel plate 30 and demister 40, and leaves from the output port 121. During the process, the circulating pump is used to transport the medicinal liquid in the medicinal tank 60 to the doser 50 for spraying, and the water bucket 62 and the medicine barrel 64 are used to transport water and medicine to the medicine tank 60 , and the cooling device 68 is used to spray water to cool down the high-temperature exhaust gas coming in from the air inlet pipe 61 .

In addition to maintaining the function of removing SO ₂ in the existing plate tower, this new type tower can additionally add the function of removing acidic gases such as SO ₃ . That is, by replacing at least one layer of porous plates in the prior art with parallel plates 30, it can Effectively remove acidic gases such as SO ₃ in sintering waste gas. Specifically, the acidic gases are transferred from the gas phase to the liquid phase for removal, solving the environmental problem of white smoke produced by sintering. It also has the advantage of not occupying additional on-site space and reducing The effect of cost increase.

In the aforementioned process, the main control parameters are gas flow rate, whose operating range is 2~3m/s; liquid-gas ratio operating range is 2~6L/ ^NM3 ; parallel plate 30 residence time operating range is 0.1~0.5sec; in the aforementioned interval The operation can achieve desulfurization effects with an SO ₂ desulfurization rate greater than 80% and an SO ₃ desulfurization rate of 60 to 90%, but the control parameters are not limited to the above.

In the aforementioned process, part of the porous plates 20 in the prior art are replaced by parallel plates 30 to increase the efficiency of the present invention in removing acidic gases such as SO ₃ . The height of the parallel plates 30 determines the length of the waste gas retention time and also determines the SO ₃ and other acid gases. The acid gas removal effect, taking the parallel plate 30 with a height of 30cm as an example, can reduce the pressure loss by about 25mmH ₂ O compared with the porous plate 20. Therefore, compared with the existing technology, the pressure loss of this new type can be reduced by about 25~ _50mmH2O . In addition to increasing the removal effect of acidic gases such as SO ₃ , it also has the effect of saving windmill electricity bills due to the reduction of overall pressure loss.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, they are not intended to limit the present invention. Any technical field that has A person with ordinary knowledge, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modifications as equivalent embodiments of equivalent changes. However, any content that does not depart from the technical solution of the present invention shall be based on this Novel Technical Substance Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the new technical solution.

10:Desulfurization tower

11: Entrance port

111:Input port

12:Export end

121:Output port

13:Open and close valve

20:Porous plate

30: Parallel plates

40:demister

50:Doser

Claims (9)

A plate tower with acid gas removal, which includes: a desulfurization tower, which has an internal space and an inlet end and an outlet end connected to the internal space; a plurality of porous plates, which are arranged at intervals in the desulfurization tower In the tower; at least one parallel plate member, which includes a plurality of absorption plates and a plurality of support parts, each of the absorption plates is parallel to each other and each support part is connected between each absorption plate. The at least one parallel plate member is provided in the desulfurization tower. ; A mist eliminator, which is arranged in the desulfurization tower and is located between the at least one parallel plate and the outlet end; a doser, which is arranged in the desulfurization tower and is located between the at least one parallel plate and the outlet end; between the demisters. The plate tower with acid gas removal as described in claim 1, wherein the at least one parallel plate member has a concentric cylindrical structure, each of the absorption plates is arranged in a concentric circle, and each of the support parts is located between each of the absorption plates. between. The plate tower with acid gas removal according to claim 1, wherein the at least one parallel plate member is a rectangular columnar structure, each of the absorption plates is a rectangular sheet, and each of the support parts is located between each of the absorption plates. . The plate tower with acid gas removal as described in any one of claims 1 to 3, wherein the cross section of each support part is a continuous tooth-like structure. The plate tower with acid gas removal described in claim 4, wherein each absorption plate is a hygroscopic chemical fiber material. The plate tower with acid gas removal described in claim 5, wherein the height of each of the at least one parallel plate is 30 cm. The plate tower with acid gas removal described in claim 6, wherein the spacing between the absorption plates is 1~5 mm. The plate tower with acid gas removal described in claim 7, wherein each porous plate is a plate with a plurality of perforations running through it, and the pore diameter of each perforation is 8~10mm. The plate tower with acid gas removal described in claim 8 further includes an on-off valve, the inlet end of the desulfurization tower has an input port, the outlet end has an output port, the on-off valve is disposed on The output position of the desulfurization tower.

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