Desulfurization and denitrification reaction tower for environmental protection flue gas treatment
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment.
Background
In the prior art, the existing desulfurization and denitrification reaction towers have the defects that part of equipment adopts a single treatment mechanism, the desulfurization and denitrification efficiency is difficult to meet high requirements and cannot effectively cope with smoke with complex components, the structural design of some equipment is unreasonable, the size is huge, the installation is complicated, a large amount of space is occupied, the maintenance cost of some equipment is high, the internal components are easy to wear, the cleaning and the overhaul are inconvenient, and the long-term operation cost is increased.
Disclosure of utility model
In view of the problems in the prior art, the main purpose of the utility model is to provide a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment, which solves the problems that in the prior art, a part of equipment adopts a single treatment mechanism, desulfurization and denitrification efficiency is difficult to meet high requirements and cannot effectively treat flue gas with complex components, the structural design of some equipment is unreasonable, the volume is huge, the installation is complicated, a large amount of space is occupied, the maintenance cost of some equipment is high, the internal components are easy to wear, the cleaning and the overhaul are inconvenient, and the long-term operation cost is increased.
The technical scheme is that the reaction tower for desulfurization and denitrification environment-friendly flue gas treatment comprises a connecting plate, wherein a first reaction tower is fixedly connected to the outer side of the connecting plate, a second reaction tower is fixedly connected to the outer side of the connecting plate and positioned on one side of the first reaction tower, a first-stage filter plate is fixedly connected to the inner part of the second reaction tower, a second-stage filter plate is fixedly connected to the inner part of the second reaction tower and positioned above the first-stage filter plate, a special-stage filter plate is fixedly connected to the inner part of the second reaction tower and positioned above the second-stage filter plate, a first conveying pipe is fixedly connected between the first reaction tower and the second reaction tower and positioned below the first-stage filter plate, and two ends of the first conveying pipe are communicated with the inner part of the first reaction tower and the second reaction tower.
Through the technical scheme, the filtered water, the primary filter plate, the secondary filter plate and the superfine filter plate form a quadruple purification system, the desulfurization efficiency can reach about 95%, the denitration efficiency is over about 85%, the denitration efficiency is far higher than that of a single treatment mode, the double-tower structure is convenient to independently maintain, the functions of each tower can be adjusted according to the smoke components, the filtered water can be recycled, the treatment effect is maintained through a pH monitoring and automatic dosing system, the operation cost is reduced, industrial smoke with different concentrations and different components can be treated, and the double-tower type flue gas desulfurization device is suitable for various industries such as electric power, steel, chemical industry and the like.
As a preferred implementation mode, the inside of first reaction tower just is located the outside fixedly connected with primary filter of first conveyer pipe, the one end of first conveyer pipe just is located the top fixedly connected with first gas collecting channel of primary filter, the internally mounted of first gas collecting channel is connected with two first air extraction fans.
Through above-mentioned technical scheme, the initial filter lightens follow-up filtration burden, and first air extraction fan cooperates with first gas collecting channel, promotes the directional flow of flue gas, and guarantee treatment process is smooth and easy, improves whole treatment effeciency.
As a preferred implementation mode, the outside fixedly connected with second conveyer pipe of first reaction tower, the one end of second conveyer pipe extends to the inside of first reaction tower and fixedly connected with diffusion cover, the inside of first reaction tower just is located the top installation of diffusion cover and is connected with the second air extraction fan.
Through the technical scheme, the diffusion cover is matched with the second air exhaust fan, so that the reaction medium is uniformly dispersed, the full contact reaction of the flue gas and the medium is promoted, and the desulfurization and denitrification reaction efficiency and the treatment quality are improved.
As a preferred implementation mode, the top fixedly connected with exhaust pipe of second reaction tower, the bottom of exhaust pipe extends to the inside of second reaction tower and fixedly connected with second gas collecting channel, the inside of second reaction tower just is located the below installation of second gas collecting channel and is connected with the third fan of bleeding.
Through the technical scheme, the third air exhaust fan is cooperated with the second gas collecting hood, clean flue gas after the efficient collection treatment is discharged in order through the discharge pipe, and the stable and smooth discharge process is ensured.
As a preferred implementation mode, the outside of first conveyer pipe just is located and is connected with the dismantlement valve between first reaction tower and the second reaction tower, the outside of first reaction tower and second reaction tower just is located the equal equidistance fixedly connected with support column of bottom of connecting plate, the bottom of second reaction tower is equipped with screw thread sealed lid.
Through above-mentioned technical scheme, dismantle valve make things convenient for equipment maintenance to overhaul, support column reinforcing equipment stability, inside screw thread sealed lid is convenient for clear up, guarantee equipment long-term steady operation, increase of service life.
Compared with the prior art, the utility model has the advantages and positive effects that,
According to the utility model, the filtered water, the first-stage filter plate, the second-stage filter plate and the special-stage filter plate form a quadruple purification system, the desulfurization efficiency can reach about 95%, the denitration efficiency is over about 85%, the desulfurization efficiency is far higher than that of a single treatment mode, the double-tower structure is convenient for independent maintenance, the functions of each tower can be adjusted according to the smoke components, the filtered water can be recycled, the treatment effect is maintained through a pH monitoring and automatic dosing system, the operation cost is reduced, industrial smoke with different concentrations and different components can be treated, the filter plate is suitable for various industries such as electric power, steel, chemical industry and the like, the primary filter plate lightens the subsequent filtration burden, the first air suction fan is matched with the first air collection cover, the directional flow of the smoke is promoted, the smoothness of the treatment process is guaranteed, the overall treatment efficiency is improved, the diffusion cover is matched with the second air suction fan, the reaction medium is uniformly dispersed, the full contact reaction of the smoke and the desulfurization and denitration reaction efficiency and the treatment quality are improved, the third air suction fan is cooperated with the second air collection cover, the clean smoke after the efficient collection treatment is orderly discharged through the discharge pipe, the stable and smooth discharge process is ensured, the disassembly valve is convenient for equipment maintenance and repair of the support column, the stability of the equipment is enhanced, the screw cap is convenient for cleaning the internal equipment, the screw cap is ensured, the long-term operation is ensured, and the service life is prolonged.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional structure of a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment;
FIG. 2 is a schematic diagram showing the bottom view structure of a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment;
FIG. 3 is a schematic diagram showing a cross-sectional perspective structure of a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment;
Fig. 4 is a schematic diagram of a cross-sectional front view structure of a reaction tower for desulfurization and denitrification environment-friendly flue gas treatment.
The legend is 1, a connecting plate, 2, a first reaction tower, 3, a primary filter plate, 4, a first conveying pipe, 5, a first gas collecting hood, 6, a first gas extraction fan, 7, a second conveying pipe, 8, a diffusion hood, 9, a second gas extraction fan, 10, a second reaction tower, 11, a primary filter plate, 12, a secondary filter plate, 13, a special filter plate, 14, a third gas extraction fan, 15, a discharge pipe, 16, a second gas collecting hood, 17, a disassembly valve, 18 and a support column.
Detailed Description
The utility model will be further described with reference to the drawings and the specific embodiments
Examples
As shown in fig. 1, 2, 3 and 4, the utility model provides a technical scheme, which comprises a connecting plate 1, wherein a first reaction tower 2 is fixedly connected to the outer side of the connecting plate 1, a second reaction tower 10 is fixedly connected to the outer side of the connecting plate 1 and positioned on one side of the first reaction tower 2, a first-stage filter plate 11 is fixedly connected to the inner part of the second reaction tower 10, a second-stage filter plate 12 is fixedly connected to the inner part of the second reaction tower 10 and positioned above the first-stage filter plate 11, a superfine filter plate 13 is fixedly connected to the inner part of the second reaction tower 10 and positioned above the second-stage filter plate 12, a first conveying pipe 4 is fixedly connected between the first reaction tower 2 and the second reaction tower 10 and positioned below the first-stage filter plate 11, and two ends of the first conveying pipe 4 are communicated with the inner parts of the first reaction tower 2 and the second reaction tower 10.
In the embodiment, a connecting plate 1 is used as a basic supporting structure, a first reaction tower 2 and a second reaction tower 10 are fixed in a welding or bolting mode, the relative positions of the two towers are ensured to be stable, an integrated treatment system is formed, and flue gas to be treated firstly enters the first reaction tower 2 for preliminary purification, and then enters the second reaction tower 10 through a first conveying pipe 4. The inlet of the first conveying pipe 4 is positioned above the primary filter plate 3, the outlet is positioned below the liquid level of filtered water at the bottom of the second reaction tower 10, so that the flue gas passes through the filtered water in a bubbling mode, partial sulfides, nitrogen oxides and particulate matters are removed by utilizing the adsorption effect of liquid, and the flue gas rises after passing through the filtered water and passes through the primary filter plate 11, the secondary filter plate 12 and the superfine filter plate 13 in sequence. The primary filter plate 11 adopts a coarse-pore ceramic or metal filter screen to intercept larger particles and liquid drops, the secondary filter plate 12 adopts active carbon or molecular sieve material to adsorb small molecular pollutants, the special filter plate 13 adopts a catalyst coating structure to promote chemical reaction of desulfurization and denitrification, filtered water can be weak alkaline solution, SO 2 is absorbed through acid-base neutralization reaction, and meanwhile, part of NO 2 is dissolved, SO that the subsequent treatment load is reduced.
As shown in fig. 1, 2, 3 and 4, the primary filter plate 3 is fixedly connected to the inside of the first reaction tower 2 and outside the first conveying pipe 4, one end of the first conveying pipe 4 is fixedly connected to the first gas collecting hood 5 above the primary filter plate 3, and two first air exhaust fans 6 are connected to the inside of the first gas collecting hood 5.
In the embodiment, the primary filter plate 3 in the first reaction tower 2 performs pretreatment such as preliminary interception of large particle impurities and the like on the entering smoke, the first air suction fan 6 in the first gas collection cover 5 is started to generate suction force, the smoke subjected to primary filtration is guided to the second reaction tower 10 through the first conveying pipe 4, and the smoke firstly passes through the bottom of the second reaction tower 10 to filter water.
As shown in fig. 1, 2, 3 and 4, the outer side of the first reaction tower 2 is fixedly connected with a second conveying pipe 7, one end of the second conveying pipe 7 extends to the inside of the first reaction tower 2 and is fixedly connected with a diffusion cover 8, and a second air exhaust fan 9 is installed and connected in the inside of the first reaction tower 2 and above the diffusion cover 8.
In this embodiment, the second conveying pipe 7 introduces the medium required by the reaction, diffuses in the first reaction tower 2 through the diffusion cover 8, and the second air exhaust fan 9 is started to accelerate the mixing of the medium and the flue gas, thereby enhancing the reaction effect.
As shown in fig. 1, 2, 3 and 4, a discharge pipe 15 is fixedly connected to the top of the second reaction tower 10, the bottom of the discharge pipe 15 extends to the inside of the second reaction tower 10 and is fixedly connected with a second gas collecting hood 16, and a third air exhaust fan 14 is installed and connected to the inside of the second reaction tower 10 and below the second gas collecting hood 16.
In this embodiment, the third air extraction fan 14 is started to extract the flue gas processed by the multi-stage filter plate upwards, collect the flue gas to the second gas collection hood 16, and finally discharge the flue gas out of the system through the discharge pipe 15.
As shown in fig. 1, 2, 3 and 4, a disassembly valve 17 is installed and connected between the first reaction tower 2 and the second reaction tower 10 on the outer side of the first conveying pipe 4, the first reaction tower 2 and the second reaction tower 10 are fixedly connected with support columns 18 at equal intervals on the outer side of the connecting plate 1 and the bottom of the second reaction tower 10, and a threaded sealing cover is arranged on the bottom of the second reaction tower 10.
In the embodiment, the dismounting valve 17 can open or close the first conveying pipe 4, so that the overhaul and maintenance are convenient, the supporting columns 18 are uniformly distributed and provide stable support for equipment, and the threaded sealing cover at the bottom of the second reaction tower 10 can be dismounted, so that the bottom filtering water and deposited impurities can be cleaned conveniently.
Working principle:
As shown in fig. 1, 2, 3 and 4, a connecting plate 1 is used as a basic supporting structure, a first reaction tower 2 and a second reaction tower 10 are fixed in a welding or bolting mode, the relative positions of the two towers are ensured to be stable, an integrated treatment system is formed, and flue gas to be treated firstly enters the first reaction tower 2 for preliminary purification, and then enters the second reaction tower 10 through a first conveying pipe 4. The inlet of the first conveying pipe 4 is positioned above the primary filter plate 3, the outlet is positioned below the liquid level of filtered water at the bottom of the second reaction tower 10, so that the flue gas passes through the filtered water in a bubbling mode, partial sulfides, nitrogen oxides and particulate matters are removed by utilizing the adsorption effect of liquid, and the flue gas rises after passing through the filtered water and passes through the primary filter plate 11, the secondary filter plate 12 and the superfine filter plate 13 in sequence. The primary filter plate 11 adopts a coarse-pore ceramic or metal filter screen to intercept larger particles and liquid drops, the secondary filter plate 12 adopts activated carbon or molecular sieve material to adsorb small molecular pollutants, the tertiary filter plate 13 adopts a catalyst coating structure to promote chemical reaction of desulfurization and denitrification, filtered water can be weak alkaline solution, SO 2 is absorbed through acid-base neutralization reaction, meanwhile, part of NO 2 is dissolved, the subsequent treatment load is reduced, the primary filter plate 3 in the first reaction tower 2 carries out pretreatment such as preliminary interception of large particle impurities on the entering smoke, the first air suction fan 6 in the first gas collection cover 5 is started to generate suction force, the smoke subjected to primary filtration is guided to the second reaction tower 10 through the first conveying pipe 4, and the smoke is filtered through the bottom of the second reaction tower 10.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not deviate the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present utility model.