Desulfurization, denitration and dust removal device for blast furnace gas

Abstract

The utility model discloses a desulfurization, denitrification and dust removal device for blast furnace gas, which is applied to the field of environmental protection equipment, solves the technical problem that a purification catalytic medium in the existing blast furnace gas treatment device is inconvenient to replace, and adopts the technical scheme that the desulfurization, denitrification and dust removal device comprises a device base which is provided with a catalytic module, a dust removal module and a desulfurization module, the catalytic module comprises a denitration cavity block detachably connected with the device base and a plurality of catalyst blocks movably connected into the denitration cavity block, a plurality of independent cavities are formed in the denitration cavity block in the circumferential direction of the denitration cavity block, and flow guide through holes are formed among the independent cavities; the side wall of the independent chamber is provided with a mounting notch for a catalyst block to be movably inserted, the side wall of the denitration cavity block is provided with an air inlet guide pipe and a drainage fan communicated with the air inlet guide pipe, and the side wall of the independent chamber located on one side of the air inlet guide pipe is further communicated with a first flow guide pipe; the device has the technical effect that catalysis and purification treatment media in the treatment device can be conveniently replaced in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of environmental protection equipment, especially a blast furnace gas desulfurization and denitrification dust removal device. BACKGROUND

[0002] Blast furnace gas is a by-product combustible gas in the blast furnace ironmaking production process, which contains a large amount of ash, and contains a large amount of sulfur dioxide and nitrogen oxides and other atmospheric pollutants. These pollutants are the main source of urban acid rain and photochemical smog and other environmental pollution problems, and sulfur dioxide and nitrogen oxides are extremely harmful to human health. In order to reduce the overall emission of these atmospheric pollutants, reduce the formation of atmospheric acidification and photochemical smog, and improve the air quality of human life, it is necessary to carry out desulfurization and denitrification and dust removal treatment before the blast furnace gas is discharged.

[0003] Although the blast furnace gas desulfurization and denitrification dust removal device of the present stage can achieve a certain degree of purification treatment effect, but with long time use, the purification and catalytic medium in the equipment cannot be replaced in time, resulting in poor actual purification treatment effect. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a blast furnace gas desulfurization and denitrification dust removal device, which has the advantages of facilitating the replacement of the catalytic medium in the device, and ensuring reliable treatment efficiency and quality.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a blast furnace gas desulfurization and denitrification dust removal device, which comprises a device base, a catalytic module, a dust removal module and a desulfurization module are arranged on the device base, characterized in that: the catalytic module comprises a desulfurization cavity block which is detachably connected with the device base, and a plurality of catalyst blocks which are movably connected in the desulfurization cavity block, a plurality of independent cavities are arranged in the desulfurization cavity block along the circumference thereof, flow guide through holes are arranged between the plurality of independent cavities, mounting slots for movably inserting the catalyst blocks are arranged on the side wall of the independent cavity, a gas inlet pipe and a drainage fan which is communicated with the gas inlet pipe are arranged on the side wall of the desulfurization cavity block, a flow guide pipe one is further communicated with the side wall of the independent cavity on one side of the gas inlet pipe, the dust removal module comprises a dust removal cavity block and an electrostatic dust removal assembly arranged in the dust removal cavity block, the end of the flow guide pipe one is communicated with the dust removal cavity block, the electrostatic dust removal assembly comprises a plurality of high-voltage current electrode plates, an electrification control block and a vibration generating block, a dust removal cleaning port is further arranged on the side wall of the dust removal cavity block, a plurality of flow guide pipes two are further arranged on the side of the dust removal cavity block, the desulfurization module comprises a desulfurization cavity block and a spray pipe network arranged in the desulfurization cavity block, the side of the desulfurization cavity block is communicated with the flow guide pipe two, a liquid discharge vertical pipe is arranged on the bottom of the desulfurization cavity block, a hole slot is arranged on the middle part of the desulfurization cavity block and the dust removal cavity block for the liquid discharge vertical pipe to pass through, a circulating water storage cavity which is communicated with the liquid discharge vertical pipe is arranged in the device base, and a gas outlet pipe is arranged on the top end of the desulfurization cavity block.

[0006] Further, the desulfurization cavity block is further connected with a heating cavity block.

[0007] Further, the bottom of the dust removal cavity block is further provided with a funnel-shaped dust collection screen block.

[0008] Further, the top of the desulfurization cavity block is further provided with a turbulence fin group.

[0009] Further, the middle part of the air inlet pipe is further provided with a filter screen pipe block, which is movably inserted into the air inlet pipe, and the air inlet pipe is provided with a pipe sleeve slot.

[0010] Further, the inner wall of the independent cavity is provided with an auxiliary clamping groove for inserting a catalyst block.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1. The independent combination of the desulfurization cavity block, the dust removal cavity block and the desulfurization cavity block realizes the segmented processing of the blast furnace gas to be processed, the catalyst and the purification medium in the multiple cavity blocks are convenient to replace and maintain, the stability and reliability of the whole device are ensured, and the stability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is used to show the device structure sectional view in the embodiment.

[0014] Figure 2 is used to show the internal section view of the desulfurization cavity block in the embodiment.

[0015] Fig. 1 is a device base; 2 is a desulfurization cavity block; 3 is a catalyst block; 4 is an independent cavity; 5 is a flow guide through hole; 6 is a mounting slot; 7 is an air inlet pipe; 8 is a flow guide fan; 9 is a flow guide pipe one; 10 is a dust removal cavity block; 11 is a high-voltage current plate; 12 is an electrification control block; 13 is a vibration generation block; 14 is a dust removal cleaning port; 15 is a flow guide pipe two; 16 is a desulfurization cavity block; 17 is a spray pipe network; 18 is a liquid discharge vertical pipe; 19 is a hole groove; 20 is a circulating water storage cavity; 21 is an air outlet pipe; 22 is a heating cavity block; 23 is a funnel-shaped dust collection screen block; 24 is a turbulence fin group; 25 is a filter screen pipe block; 26 is a pipe sleeve slot; 27 is an auxiliary clamping groove. DETAILED DESCRIPTION

[0016] The utility model will be further described in detail in combination with the drawings.

[0017] Embodiment: a blast furnace gas desulfurization and denitrification dust removal device, such as Figure 1 and Figure 2As shown, including device base 1, device base 1 is provided with catalytic module, dust removal module and desulfurization module, the blast furnace gas to be treated is discharged through the action of catalytic module, dust removal module and desulfurization module to realize complete catalytic purification process, and the discharge requirement is reached.

[0018] The catalytic module includes a desulfurization cavity block 2 detachably connected with the device base 1 and a plurality of catalyst blocks 3 movably connected in the desulfurization cavity block 2. The side wall of the desulfurization cavity block 2 is provided with an air inlet duct 7 and a drainage fan 8 communicated with the air inlet duct 7. The continuous introduction of the blast furnace gas to be treated is realized by the action of the drainage fan 8. A plurality of independent chambers 4 are arranged along the circumference of the desulfurization cavity block 2. A plurality of flow guide through holes 5 are arranged between the plurality of independent chambers 4. The annular treatment channel is realized by the arrangement of the plurality of independent chambers 4. The side wall of the independent chamber 4 is provided with a mounting slot 6 for the active plug-in of the catalyst block 3, which facilitates the timely replacement of the catalyst in the use process of the equipment. The inner wall of the independent chamber 4 is provided with an auxiliary clamping groove 27 for the plug-in of the catalyst block 3, which ensures the reliable replacement of the catalyst block 3 and reduces the gap that may cause insufficient treatment of the gas.

[0019] The side wall of the independent chamber 4 located on one side of the air inlet duct 7 is also communicated with a flow guide pipe 9. The gas after catalytic desulfurization of the catalytic module is output through the flow guide pipe 9. The dust removal module includes a dust removal cavity block 10 and an electrostatic dust removal assembly arranged in the dust removal cavity block 10. The end of the flow guide pipe 9 is communicated with the dust removal cavity block 10 to complete the further dust removal of the gas to be treated after desulfurization. The electrostatic dust removal assembly includes a plurality of high-voltage current electrode plates 11, a power control block 12 and a vibration generating block 13. When the flue gas passes through the dust removal cavity block 10, a large amount of dust moves to the anode plate part of the high-voltage current electrode plate 11 and is adsorbed on the anode plate due to the high-voltage electric field generated by the high-voltage current electrode plate 11, realizing the separation process of the gas flow and the dust. The vibration generating block 13 realizes regular vibration on the high-voltage current electrode plate 11 to realize the shaking off of the dust from the surface of the high-voltage current electrode plate 11. The bottom of the dust removal cavity block 10 is also provided with a funnel-shaped dust collecting screen block 23 to ensure that the shaken-off dust can be gathered at the bottom of the dust removal cavity block 10, reducing the free diffusion phenomenon. The side wall of the dust removal cavity block 10 is also provided with a dust removal cleaning port 14 to facilitate the device user to regularly clean the impurities in the dust removal cavity block 10.

[0020] The side of the dust removal cavity block 10 is also provided with a plurality of flow guide pipes 15, the desulfurization module comprises a desulfurization cavity block 16 and a spray pipe network 17 arranged in the desulfurization cavity block 16, the side of the desulfurization cavity block 16 is communicated with the flow guide pipes 15, thereby forming the communication between the dust removal cavity block 10 and the desulfurization cavity block 16. The gas after desulfurization and dust removal passes through the spray pipe network 17, and the desulfurization reaction is realized by the limestone slurry sprayed by the multi-stage spray pipe network 17, the bottom of the desulfurization cavity block 16 is provided with a liquid discharge vertical pipe 18, the treated slurry is collected by backflow along the liquid discharge vertical pipe 18, the middle part of the desulfurization cavity block 16 and the dust removal cavity block 10 are provided with a hole slot 19 for the liquid discharge vertical pipe 18 to pass through, and the device base 1 is provided with a circulating water storage cavity 20 communicated with the liquid discharge vertical pipe 18, and finally all the collected water is collected at the bottom of the device, so that the water treatment and circulation collection are facilitated.

[0021] The top end of the desulfurization cavity block 16 is provided with a gas outlet pipe 21, the blast furnace gas after being treated by the multi-cavity block is discharged up to the standard, and in consideration of further guaranteeing the purification standard of the discharged gas, the top of the desulfurization cavity block 16 is also provided with a turbulence piece group 24, so that the direct discharge of residual particulate matter is reduced. The gas outlet pipe 21 on the desulfurization cavity block 16 is also connected with a heating cavity block 22, so that the direct discharge of part of residual liquid is reduced by the drying operation, and the corrosion of the gas with high humidity on the external discharge pipeline is also reduced.

[0022] In order to further improve the degree of gas treatment, the middle part of the gas inlet pipe 7 is also provided with a filter screen pipe block 25, the filter screen pipe block 25 is movably inserted into the gas inlet pipe 7, the gas inlet pipe 7 is provided with a pipe sleeve slot 26, so that the preliminary treatment of the blast furnace gas to be treated in the input device is realized, the preliminary purification of the large particulate impurities in the gas to be treated is realized, and the excessive pressure and load of the purification treatment in the device are reduced.

[0023] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and the person skilled in the art can make a modification without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A blast furnace gas desulfurization and denitrification dust removal device, comprising a device base (1), a catalytic module, a dust removal module and a desulfurization module are arranged on the device base (1), characterized in that: The catalytic module comprises a desulfurization cavity block (2) detachably connected with the device base (1) and a plurality of catalyst blocks (3) movably connected in the desulfurization cavity block (2), a plurality of independent cavities (4) are arranged in the desulfurization cavity block (2) along the circumference thereof, flow guide through holes (5) are arranged between the plurality of independent cavities (4), the side wall of the independent cavity (4) is provided with a mounting slot (6) for movably inserting the catalyst block (3), the side wall of the desulfurization cavity block (2) is provided with an air inlet guide pipe (7) and a drainage fan (8) communicated with the air inlet guide pipe (7), the side wall of the independent cavity (4) on one side of the air inlet guide pipe (7) is further communicated with a flow guide pipe I (9), the dust removal module comprises a dust removal cavity block (10) and an electrostatic dust removal assembly arranged in the dust removal cavity block (10), the end of the flow guide pipe I (9) is communicated with the dust removal cavity block (10), the electrostatic dust removal assembly comprises a plurality of layers of high-voltage current electrode plates (11), an electrification control block (12) and a vibration generation block (13), the side wall of the dust removal cavity block (10) is further provided with a dust removal cleaning port (14), the side of the dust removal cavity block (10) is further provided with a plurality of flow guide pipes II (15), the desulfurization module comprises a desulfurization cavity block (16) and a spray pipe network (17) arranged in the desulfurization cavity block (16), the side of the desulfurization cavity block (16) is communicated with the flow guide pipe II (15), the bottom of the desulfurization cavity block (16) is provided with a drainage vertical pipe (18), the middle part of the desulfurization cavity block (16) and the dust removal cavity block (10) are provided with hole grooves (19) for penetrating the drainage vertical pipe (18), the device base (1) is provided with a circulating water storage cavity (20) communicated with the drainage vertical pipe (18), and the top end of the desulfurization cavity block (16) is provided with an air outlet guide pipe (21).

2. The blast furnace gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: The desulfurization cavity block (16) is further connected with a heating cavity block (22) on the air outlet guide pipe (21).

3. The device for desulfurization, denitrification and dust removal of blast furnace gas according to claim 1, characterized in that: The bottom of the dust removal cavity block (10) is further provided with a funnel-shaped dust collection screen block (23).

4. The blast furnace gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: The top of the desulfurization cavity block (16) is further provided with a turbulence fin group (24).

5. The device for desulfurization, denitrification and dust removal of blast furnace gas according to claim 1, characterized in that: The middle part of the air inlet guide pipe (7) is further provided with a filter screen pipe block (25), the filter screen pipe block (25) is movably inserted into the air inlet guide pipe (7), and the air inlet guide pipe (7) is provided with a pipe sleeve insertion slot (26).

6. The device for desulfurization, denitrification and dust removal of blast furnace gas according to claim 1, characterized in that: The inner wall of the independent cavity (4) is provided with an auxiliary clamping groove (27) for inserting the catalyst block (3). The inner wall of the independent cavity (4) is provided with an auxiliary clamping groove (27) for inserting the catalyst block (3).

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