CN219539910U - Industrial waste gas denitration oxidation reaction tower - Google Patents
Industrial waste gas denitration oxidation reaction tower Download PDFInfo
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- CN219539910U CN219539910U CN202223393601.2U CN202223393601U CN219539910U CN 219539910 U CN219539910 U CN 219539910U CN 202223393601 U CN202223393601 U CN 202223393601U CN 219539910 U CN219539910 U CN 219539910U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses an industrial waste gas denitration oxidation reaction tower which comprises a columnar tower body, wherein the top of the tower body is in a dome shape, the bottom of the tower body is used for accumulating an oxidizing solution, a spraying device and an exhaust bucket are sequentially arranged in an inner cavity of the tower body from top to bottom, the spraying device consists of a plurality of spraying heads, the bottom of the side wall of the tower body is communicated with an exhaust pipe, and the exhaust pipe penetrates through the side wall of the tower body and is connected with the exhaust bucket. The flue gas enters the tower body inner cavity which is sequentially distributed from top to bottom, when the flue gas spreads downwards, the flue gas passes through the spraying area and is mixed with the oxidation liquid atomized by the spray head, and the flue gas is sprayed out in an atomization mode after being increased by the booster pump, so that the flue gas can briefly float in the tower body. The mixing degree of the flue gas and the atomized oxidizing liquid is improved, so that the residence time of the flue gas in the oxidizing tower is longer.
Description
Technical Field
The utility model belongs to the technical field of industrial tail gas treatment equipment, and particularly relates to an industrial waste gas denitration and oxidation reaction tower.
Background
The particles generated by the industrial kiln way are derived from the combustion of fuel and the sediment on the stone surface, the particle size distribution of the particles is wider, and the particles contain SO at the same time 2 And NO x Harmful gas can not be directly discharged into the atmosphere, and kiln gas treatment of lime kiln enterprises in the existing furnace burden industry aims at controlling the discharge concentration of kiln gas particles, sulfur dioxide and nitrogen oxides to be 10, 100 and 100mg/m respectively 3 . The kiln tail gas is treated by a whole set of treatment equipment, namely a bag-type dust remover, a denitration tower, a cooling tower, a desulfurization tower, an electrostatic absorber and the like.
The traditional oxidation denitration tower is the air current direction from bottom to top, and the air inlet pipe who corresponds connects oxidation tower bottom, and the top is exhaust duct, in order to make the air current evenly disperse after getting into the tower body, installs the whirl board in the position of intake pipe and carries out the samming, makes the air current diffusion, and the air current passes through the atomization zone in the stage that rises, and the atomization zone comprises the vaporific region of tiny oxidation droplet, spouts by the atomising head, and the oxidation liquid is fog droplet's form, mix the flue gas back with the NOx reaction in the flue gas, it is more abundant to mix.
The temperature of the flue gas in the air inlet pipeline is approximately 50 ℃, the floating speed is high, when the flue gas passes through the oxidation tower, even though the flue gas is uniformly blown through the cyclone plate, the flue gas cannot be fully mixed with atomized droplets under the action of high flow velocity, and the flue gas reaches the top demister, so that the reaction and filtration of NOx in the flue gas are incomplete.
Therefore, the utility model improves the existing oxidation denitration tower, changes the direction of air flow, improves the mixing degree of flue gas and an atomization area, and improves the oxidation denitration efficiency.
Disclosure of Invention
The utility model aims to provide an industrial waste gas denitration and oxidation reaction tower, which is improved on the basis of the existing oxidation and denitration tower, changes the direction of air flow, improves the mixing degree of flue gas and an atomization area, and improves the oxidation and denitration efficiency.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
an industrial waste gas denitration oxidation reaction tower comprises a columnar tower body, wherein the top of the tower body is in a dome shape, the center arch is communicated with an air inlet pipe, and the bottom of the tower body is in an arc bottom and is used for accumulating an oxidizing solution;
the spraying device consists of a plurality of spraying heads, the spraying heads are communicated with an oxidation solution at the bottom of the tower body through pipelines, and the pipelines are connected in series with a booster pump;
the bottom of tower body lateral wall intercommunication has the blast pipe, the blast pipe passes tower body lateral wall and connects the exhaust fill, the exhaust fill is funnel-shaped structure, and the back-off installation, exhaust fill central authorities intercommunication blast pipe.
Further, the exhaust pipe is connected with a demister in series, the demister is provided with a shell, a baffling type demister plate is arranged in a cavity in the shell, the bottom of the shell is funnel-shaped, and the bottom of the shell is communicated with the bottom of the tower body through a liquid return pipe.
Further, the cyclone is arranged at the top of the tower body at the position corresponding to the air inlet pipe, comprises a circular plate and arc-shaped blades positioned on the circular plate, and is fixed at the top of the tower body through a rotating shaft.
Further, the part of the pipeline corresponding to the tower body is annular and fixed on the inner side wall of the tower body, the spray heads are annularly distributed on the side wall of the pipeline, and the spray direction of the spray heads is aligned with the center of the tower body.
The utility model has the following beneficial effects: the intake pipe is located the tower body top, and the flue gas gets into and has from top to bottom to be covered with the tower body inner chamber in proper order, and the flue gas is when spreading downwards, through spraying district, mixes with atomising oxide liquid of atomising head, and the atomising head that atomizer corresponds is a plurality of, and two sets of, all communicates unified pipeline, increases back atomizing form blowout through the booster pump, can briefly float in the tower body. The mixing degree of flue gas and atomized oxidizing liquid is improved, the residence time of the flue gas in the oxidizing tower is longer, in order to prevent the aggregated small liquid from flowing into the exhaust pipe in a stranding manner, the exhaust hopper is arranged at the position of the exhaust pipe joint tower body, the surrounding flue gas can be collected in a large range by the exhaust hopper, the flue gas can be uniformly discharged, and the phenomena of large local negative pressure and accelerated local flow velocity of air flow caused by direct exhaust of the small-caliber exhaust port are avoided.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings used for describing the embodiments will be briefly described below.
Fig. 1: the utility model is a schematic structural diagram.
Fig. 2: the cyclone structure of the utility model is schematically shown.
Fig. 3: the spray head of the utility model is schematically arranged.
In the drawings, the list of components represented by the various numbers is as follows: the tower body 1, the air inlet pipe 11, the exhaust hopper 13, the spray head 22, the booster pump 21, the exhaust pipe 12, the demister 3, the liquid return pipe 31, the cyclone 4, the circular plate 41, the arc-shaped blades 42, the rotating shaft 43 and the pipeline 2.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
As shown in fig. 1: an industrial waste gas denitration oxidation reaction tower comprises a columnar tower body 1, wherein the height of the tower body is 7.5m, the diameter of the tower body is 1.7m, the whole body 304 is made of stainless steel or galvanized steel, an anti-corrosion vertical layer is inlaid in the inner wall, the top of the tower body 1 is dome-shaped, the center arch is communicated with an air inlet pipe 11, and the bottom of the tower body 1 is an arc bottom for accumulating an oxidizing solution; the reaction tower is formed by splicing a top part, a tower body and a tower bottom, the splicing side is of a flange structure, the combination and the sealing are carried out through rubber leather gaskets and bolts, the upstream of an air inlet pipe corresponding to the reaction tower is provided with an upstream desulfurizing tower, the downstream is provided with an alkaline washing tower, and a whole set of tail gas treatment system comprises dry distillation converter tail gas, U-shaped pipeline cooling, bag dust collector dust removal, spray tower cooling, negative pressure fan boosting, double-alkaline desulfurizing tower, oxidation tower denitration, alkaline washing tower, denitration tower and exhaust tower. Wherein it enters the oxidation columnThe tail gas temperature is 30-60 ℃ and the air quantity is 13000m 3 And/h, the air flow rate is 3-5m/s, the liquid-gas ratio is 2.2L/m < 3 >, the residence time of the flue gas is 3-4s, and the PH is more than or equal to 8.
The prepared oxidizing solution is sodium hypochlorite and sodium chlorite, and oxidizes NO in the flue gas into NO 2 The oxidation degree of the flue gas is improved, and then the sodium thiosulfate is used for reducing NO2 in the flue gas into N 2
The inner cavity of the tower body 1 is sequentially provided with a spraying device and an exhaust hopper 13 from top to bottom, the spraying device consists of a plurality of spraying heads 22, the spraying heads 22 are communicated with an oxidizing solution at the bottom of the tower body 1 through a pipeline 2, and the pipeline 2 is connected with a booster pump 21 in series; the spray nozzle is a 1.0 inch SiC spray nozzle, and the lift of the booster pump is 25m and 15m 3 /h。
The bottom of the side wall of the tower body 1 is communicated with an exhaust pipe 12, the exhaust pipe 12 penetrates through the side wall of the tower body 1 and is connected with an exhaust bucket 13, the exhaust bucket 13 is of a funnel-shaped structure and is installed in a reverse buckling mode, and the center of the exhaust bucket 13 is communicated with the exhaust pipe 12.
The NOx concentration is low, the flue gas quantity is small, the flue gas temperature is not higher than 360 ℃, the wet denitration cost is low, the construction is simple, the operation is stable, the use is safe, the investment is small, the operation is easy, and the like. The flue gas enters the tower body inner cavity which is sequentially distributed from top to bottom, when the flue gas downwards spreads, the flue gas passes through the spraying area and is mixed with the oxidation liquid atomized by the spraying heads, the spraying heads corresponding to the spraying devices are multiple, two groups of the spraying heads are communicated with a unified pipeline, the flue gas is sprayed out in an atomization mode after being increased by the booster pump, and the flue gas can briefly float in the tower body.
The method improves the mixing degree of the flue gas and the atomized oxidizing liquid, ensures that the residence time of the flue gas in the oxidizing tower is longer, and avoids the phenomena that local negative pressure is large and local flow speed of air flow is accelerated due to direct exhaust of a small-caliber exhaust port in order to prevent the aggregated small liquid from flowing into the exhaust pipe in a straying way, and an exhaust hopper is arranged at the position of the exhaust pipe joint tower body and can collect the surrounding flue gas in a large range and uniformly exhaust the flue gas.
The exhaust pipe 12 is connected in series with the demister 3, the demister 3 is provided with a shell, a baffling type demister plate is arranged in a cavity inside the shell, the bottom of the shell is funnel-shaped, and the bottom of the shell is communicated with the bottom of the tower body 1 through a liquid return pipe 31. The shell is correspondingly provided with an air inlet and an air outlet, the baffling type demisting plates are sequentially arranged in parallel to form a plurality of baffling type airflow channels, small liquid drops flow down in a stranding mode after collision in the flowing process, are converged at the bottom, flow back to the bottom of the tower through a backflow pipe, and are recycled.
As shown in fig. 2: the cyclone 4 is arranged at the top of the tower body 1 corresponding to the position of the air inlet pipe, the cyclone 4 comprises a circular plate 41 and arc-shaped blades 42 positioned on the circular plate, and the cyclone 4 is fixed at the top of the tower body 1 through a rotating shaft 43. The cyclone corresponds with the tower body top opening side for openly shelter from the air current, and the flue gas is to diffusion all around when striking the cyclone, and the plectane that the cyclone corresponds has arc blade simultaneously, and the flue gas makes the cyclone rotate when striking the cyclone, further diffuses the flue gas.
As shown in fig. 3: the part of the pipeline 2 corresponding to the tower body 1 is annular, the pipeline 2 is fixed on the inner side wall of the tower body 1, the spray heads 22 are annularly distributed on the side wall of the pipeline 2, and the spray direction of the spray heads 22 is aligned with the center of the tower body 1. Each spray head sprays the center of the tower body simultaneously, an atomization layer is formed on the tower body, and the coverage rate of an atomization area is high.
The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.
Claims (4)
1. An industrial waste gas denitration oxidation reaction tower which is characterized in that:
the device comprises a columnar tower body (1), wherein the top of the tower body (1) is in a dome shape, the center of the tower body is arched and communicated with an air inlet pipe (11), and the bottom of the tower body (1) is in a circular arc bottom and is used for accumulating an oxidizing solution;
the device is characterized in that a spraying device and an exhaust hopper (13) are sequentially arranged in an inner cavity of the tower body (1) from top to bottom, the spraying device consists of a plurality of spraying heads (22), the spraying heads (22) are communicated with an oxidation solution at the bottom of the tower body (1) through pipelines (2), and the pipelines (2) are connected in series with a booster pump (21);
the bottom of tower body (1) lateral wall intercommunication has blast pipe (12), blast pipe (12) pass tower body (1) lateral wall and connect exhaust bucket (13), exhaust bucket (13) are funnel-shaped structure, and the installation of back-off formula, exhaust bucket (13) central authorities intercommunication blast pipe (12).
2. The industrial waste gas denitration and oxidation reaction tower according to claim 1, wherein: the exhaust pipe (12) is connected with the demister (3) in series, the demister (3) is provided with a shell, a baffle type demisting plate is arranged in a cavity inside the shell, the bottom of the shell is funnel-shaped, and the bottom of the shell is communicated with the bottom of the tower body (1) through a liquid return pipe (31).
3. The industrial waste gas denitration and oxidation reaction tower according to claim 1, wherein: the cyclone (4) is arranged at the top of the tower body (1) corresponding to the position of the air inlet pipe, the cyclone (4) comprises a circular plate (41) and arc-shaped blades (42) arranged on the circular plate, and the cyclone (4) is fixed at the top of the tower body (1) through a rotating shaft (43).
4. The industrial waste gas denitration and oxidation reaction tower according to claim 1, wherein: the part of the pipeline (2) corresponding to the tower body (1) is annular, the pipeline is fixed on the inner side wall of the tower body (1), the spray heads (22) are annularly distributed on the side wall of the pipeline (2), and the spray direction of the spray heads (22) is aligned with the center of the tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223393601.2U CN219539910U (en) | 2022-12-15 | 2022-12-15 | Industrial waste gas denitration oxidation reaction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223393601.2U CN219539910U (en) | 2022-12-15 | 2022-12-15 | Industrial waste gas denitration oxidation reaction tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219539910U true CN219539910U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223393601.2U Active CN219539910U (en) | 2022-12-15 | 2022-12-15 | Industrial waste gas denitration oxidation reaction tower |
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| Country | Link |
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| CN (1) | CN219539910U (en) |
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2022
- 2022-12-15 CN CN202223393601.2U patent/CN219539910U/en active Active
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