CN216677662U - Smoke rotary-cut vortex redistribution hydrops groove - Google Patents
Smoke rotary-cut vortex redistribution hydrops groove Download PDFInfo
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- CN216677662U CN216677662U CN202220152988.3U CN202220152988U CN216677662U CN 216677662 U CN216677662 U CN 216677662U CN 202220152988 U CN202220152988 U CN 202220152988U CN 216677662 U CN216677662 U CN 216677662U
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- 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 a smoke rotary-cut vortex redistribution liquid accumulation tank which comprises a bottom plate, a plurality of air lifting caps and a plurality of rotary-cut smoke distributors, wherein air inlets of a plurality of flanging flanges are reserved on the bottom plate, the plurality of air lifting caps and the plurality of rotary-cut smoke distributors are respectively inserted and buckled on the corresponding flanging flanges on the bottom plate and then fixed and are distributed in a staggered manner, a plurality of liquid discharge ports are symmetrically arranged on the bottom plate, and the bottom plate is arranged in a desulfurization tower and is positioned below a circulating spray layer or/and a filler layer. The flue gas impacts each other after entering the gas-liquid redistribution air lifting cap, the vortex ascending flue gas is discharged from the outlet of the air lifting cap and then is mixed with the flue gas, the rotary-cut flue gas distributor is distributed along the periphery of the liquid accumulation groove and close to the tower wall of the desulfurizing tower, and the flue gas is internally tangent downwards, so that the problems of uneven distribution of the flue gas in the desulfurizing tower and large single resistance of a flow field are effectively solved. The staggered arrangement of the gas-liquid redistribution air lifting cap and the rotary-cut flue gas distributor realizes three functions: and (4) redistributing the flue gas, uniformly mixing the gas and the slurry, and then mixing the slurry contacted with the flue gas.
Description
Technical Field
The utility model relates to the technical field of gas-liquid two-phase mixing redistribution for absorbing and purifying flue gas by flue gas desulfurization and denitration, in particular to a flue gas rotary-cut vortex redistribution liquid collecting tank suitable for ammonia process or alkali process desulfurization.
Background
The flue gas desulfurization of domestic power station boilers or sintering machines adopts ammonia method or alkaline method desulfurization process technology to treat the flue gas, and ammonia water diluted to 20% concentration by using liquid ammonia is used as desulfurizer to absorb SO in the flue gas according to the process design of saturated crystallization system in tower2Generating ammonium sulfite, carrying out forced oxidation, producing ammonium sulfate slurry with solid content of about 10% by using the heat of raw flue gas by using a dilute ammonium sulfate solution, conveying the ammonium sulfate slurry to an ammonium sulfate post-treatment system, separating, drying and packaging ammonium sulfate, realizing desulfurization and generating chemical fertilizer ammonium sulfate in an oxidation reaction. The flue gas desulfurization effect of the unit put into operation before 2018 basically reaches SO specified in currently executed' emission Standard of atmospheric pollutants for thermal Power plants2Is 100mg/m3The emission limit value is increased to 35mg/m due to the increase of the national requirements on the atmospheric emission3The dust content is increased to 10mg/m3The following. Most of the original units are in urgent need of improvement and perfection in the case of substandard emission. The improvement of the existing ammonia flue gas desulfurization is mainly that gradient treatment is arranged on a desulfurization tower in sections, the desulfurization tower is generally provided with a concentration section, a desulfurization section and a washing section, each section is separated by a liquid accumulation groove, in the desulfurization tower, flue gas flows upwards from the lower part of the tower, liquid flows downwards from the top of the tower, and gas phase and liquid phase transfer heat and mass transfer mutually in an absorption process through gas-liquid countercurrent two-phase contact. The liquid collecting tank isolates the desulfurization liquid under the condition of not influencing the gas circulation. The concentration section, the desulfurization section and the washing section can simultaneously use absorbents with different concentrations, so that the defects of uneven desulfurization flow field, uneven slurry redistribution, large system resistance and the like are overcome, and the improvement on the yieldThe absorption efficiency of the desulfurizing tower keeps the long-term stable operation of the wet desulfurizing system.
Need adopt high-nickel dual phase steel to come resistant corrosion when adopting alloy material in the ammonia process desulfurizing tower, its is with high costs, and later stage maintenance is rectified and is reformed need be on fire the welding in the desulfurizing tower, and the desulfurizing tower adopts carbon steel lining glass scale anticorrosive usually, most abstains from the welding production spark or the welding slag, and it catches fire to take place in the desulfurizing tower restoration process for a plurality of times in the country. Therefore, the utility model is made of non-metal high temperature resistant material and added with wear resistant material.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, provides a novel liquid accumulating tank device suitable for an ammonia method or alkali method flue gas desulfurization process, and can realize the isolation of desulfurization liquid in a wet desulfurization tower under the condition of not influencing the gas circulation. The concentration section, the desulfurization section and the washing section of the desulfurization tower can simultaneously use absorbents with different concentrations, so that the defects of uneven desulfurization flow field, uneven slurry redistribution, large system resistance and the like are overcome, the absorption efficiency of the desulfurization tower is improved, and the long-term stable operation of a wet desulfurization system is kept. The leakage phenomenon between two sections of the separation tower bodies of the desulfurizing tower does not occur, and three main functions are realized simultaneously: firstly, flue gas redistribution, secondly, flue gas and slurry are mixed and evenly distributed, and thirdly, slurry after being contacted with the flue gas is remixed.
The utility model adopts the following technical scheme:
the utility model provides a flue gas rotary-cut vortex redistribution ponding groove, includes bottom plate, a plurality of liter gas caps, a plurality of rotary-cut flue gas distributors, its characterized in that: the bottom plate is reserved with a plurality of air inlets of the flanging flanges, a plurality of air lifting caps and a plurality of rotary-cut smoke distributors are respectively inserted and buckled on the corresponding flanging flanges on the bottom plate and then fixed, the rotary-cut smoke distributors are distributed in a staggered mode, a plurality of liquid discharge ports are symmetrically arranged on the bottom plate, and the bottom plate is arranged in the desulfurizing tower and is positioned below the circulating spraying layer or/and the packing layer.
Preferably, the method comprises the following steps: the bottom plate of the liquid accumulation groove is fixed in the desulfurizing tower by a support frame, the support frame is arranged in a ladder-shaped inclined mode, and the central position of the desulfurizing tower is highest.
Preferably, the method comprises the following steps: the liquid outlet of the liquid accumulation groove is arranged at the lowest position of the bottom plate.
Preferably, the method comprises the following steps: the air lifting cap is rectangular or circular.
Preferably, the method comprises the following steps: the air lifting cap adopts a liquid redistribution structure.
Preferably, the method comprises the following steps: the outlet end of the rotary-cut flue gas distributor is provided with a redistributor.
Preferably, the method comprises the following steps: the bottom plate, the air lifting cap and the rotary-cut smoke distributor are all made of non-metal corrosion-resistant, high-temperature-resistant and wear-resistant materials.
Preferably, the method comprises the following steps: the rotary-cut flue gas distributor is arranged along the periphery of the wall of the desulfurization tower, and rotary-cut flue gas generates local negative pressure to improve a flow field.
The diameter of the desulfurizing tower is more than 10m, the bottom plate is arranged from the middle to the periphery of the wall of the desulfurizing tower in an inverted V shape, the diameter of the desulfurizing tower is less than 10m, the bottom plate is arranged in a single-side inclined mode, and the lowest position of the bottom plate is provided with a liquid discharge port.
The utility model has the beneficial effects that:
1. the resistance of the liquid collecting tank is reduced, the flow field in the desulfurizing tower is uniform, and the gas-liquid mixing is more efficient. The liquid accumulation groove is provided with the gas lifting cap for gas-liquid redistribution and the rotary-cut flue gas distributor, the rotary-cut flue gas distributor is arranged along the periphery of the wall of the desulfurization tower, and the rotary-cut flue gas generates local negative pressure, so that the flow field is improved. The air lifting cap adopts a liquid redistribution structure, and the air lifting cap forms bulge type redistribution in the box body, so that the outlet end and the flue gas can be mixed easily.
2. The structure is simple, the modular manufacture can be realized, the field installation construction amount is less, and the construction cost is saved.
3. The utility model is made of non-metal corrosion-resistant high-temperature-resistant wear-resistant material. Avoided adopting high nickel dual phase steel to withstand corrosion, it is with high costs, later stage maintenance rectification need move the shortcoming of fire welding in the desulfurizing tower, because the desulfurizing tower adopts carbon steel lining glass scale anticorrosive usually, most avoid the welding to produce spark or welding slag, the domestic emergence desulfurizing tower is restoreed the in-process and is caught fire many times. The defects of secondary corrosion prevention and peeling of the anticorrosive coating made of carbon steel materials are avoided. The maintenance and repair are simple after long-term use.
4. Endures the high-speed impact of continuous flue gas and the scouring of sprayed slurry.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the present invention showing the support arrangement of the effusion cell frame.
Description of reference numerals: desulfurizing tower 1, bottom plate 2, lift cap 3, rotary-cut flue gas distributor 4, leakage fluid dram 5, support frame 6.
Detailed Description
For better understanding of the technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and specific embodiments is to be understood that the embodiments described herein are only for the understanding of the present invention and are not intended to limit the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Liquid accumulation tanks are arranged between the concentration section and the absorption section of the desulfurizing tower and between the absorption section and the water washing section. The liquid accumulating tank is usually arranged below the circulating spraying layer, and if a packing layer is arranged, the liquid accumulating tank is arranged below the circulating spraying layer and the packing layer. The present invention is not further described and the structures are conventional.
As shown in fig. 1 and fig. 2, the utility model relates to a smoke rotary-cut vortex redistribution accumulated liquid tank, wherein at least 10m of diameter of a desulfurizing tower, a bottom plate is arranged from the middle to the periphery of the tower wall of the desulfurizing tower in an inverted V shape, and comprises a bottom plate 2, a plurality of air lifting caps 3 and a plurality of rotary-cut smoke distributors 4, and is characterized in that: the bottom plate 2 is reserved with air inlets of a plurality of flange flanges, a plurality of air lifting caps 3 and a plurality of rotary-cut flue gas distributors 4 are respectively inserted and buckled on the corresponding flange flanges on the bottom plate 2 and then fixed, the flange flanges are distributed in a staggered mode, four liquid discharge ports 5 are symmetrically arranged on the bottom plate 2, and the bottom plate 2 is arranged in the desulfurizing tower 1 and is positioned below the circulating spray layer or/and the packing layer. The bottom plate 2 of liquid collecting tank adopts support frame 6 to fix in desulfurizing tower 1, and support frame 6 adopts the ladder slope to arrange, and desulfurizing tower central point puts the highest position, and the leakage fluid dram 5 in liquid collecting tank arranges in bottom plate 2 lowest position. The air lifting cap is rectangular, and can also be circular or polygonal in other shapes. The air lifting cap adopts a liquid redistribution structure. The liquid redistributor configuration is conventional.
Preferably, the method comprises the following steps: the outlet end of the rotary-cut flue gas distributor is provided with a redistributor. The redistributor configuration is an existing configuration.
Preferably, the method comprises the following steps: the bottom plate, the air lifting cap and the rotary-cut flue gas distributor are all made of non-metal corrosion-resistant high-temperature-resistant wear-resistant materials.
Preferably, the method comprises the following steps: the rotary-cut flue gas distributor is arranged along the periphery of the wall of the desulfurization tower, and rotary-cut flue gas generates local negative pressure to improve a flow field.
Because the support frame 6 adopts the ladder slope to arrange, the desulfurizing tower central point position is the highest, and is close to the drain side and minimum, and symmetrical arrangement. The slurry after the flue gas contact is favorably remixed and discharged smoothly without accumulating slurry.
The device is connected with a desulfurization tower frame supporting beam in a winding mode, bonding, curing and full connection are performed between connection, the strength and rigidity of the device are integrally guaranteed after molding, and the overall sealing performance is effectively guaranteed. The device is also suitable for other working conditions for gas-liquid remixing and separating operations.
As shown in fig. 1, all the bottom plates are uniformly laid on the support frame, and each small bottom plate is bonded, cured and fully connected after being combined, so that the bottom plate of the integrated liquid accumulation tank is finally formed. And winding and fixing the integrated bottom plate of the liquid accumulation tank and the support frame.
And winding and fixing the liquid outlet and the bottom plate of the liquid accumulating tank, and finishing butt joint with an external flange pipe. And (4) checking the sealing of the bottom plate of the liquid accumulation groove to ensure that the liquid accumulation groove is not leaked with the slurry. The liquid discharge amount of the arranged liquid discharge port is larger than the liquid inlet amount sprayed from the upper part of the liquid accumulation groove.
The bottom plate of the liquid accumulation groove is provided with a socket which is positioned and fixed with the air lifting cap and the rotary cutting smoke distributor when being preassembled in a factory. And winding and fixing the air lifting cap and the rotary-cut smoke distributor which are arranged on the bottom plate.
The outlet flow rate of the rotary-cut flue gas distributor is controlled to be 7-8 m/s, the opening of the bottom plate of the liquid collecting tank is not lower than 25% and not higher than 40%, the outlet flow rate of the air lifting cap is ensured to be 7-8 m/s within the range of the empty tower flow rate of the desulfurizing tower to be 2-3 m/s, and the integral resistance drop of the liquid collecting tank is controlled not to exceed 200 Pa.
The nonmetal liquid accumulating tank has the advantages of corrosion resistance, long service life, high strength, convenience in manufacturing and maintenance, no fire during maintenance and the like, and has the characteristics of more uniform distribution of a flue gas flow field, redistribution of flue gas, uniform mixing of flue gas and slurry, remixing of slurry after the flue gas contacts and the like.
If the diameter of the desulfurizing tower is below 10m, the bottom plate 2 is arranged in a single-side inclined mode, and a liquid discharging port is formed in the lowest position of the bottom plate 2. Otherwise the same as above.
Claims (9)
1. The utility model provides a flue gas rotary-cut vortex redistribution ponding groove, includes bottom plate, a plurality of liter gas caps, a plurality of rotary-cut flue gas distributors, its characterized in that: the bottom plate is reserved with a plurality of air inlets of the flanging flanges, a plurality of air lifting caps and a plurality of rotary-cut smoke distributors are respectively inserted and buckled on the corresponding flanging flanges on the bottom plate and then fixed, the rotary-cut smoke distributors are distributed in a staggered mode, a plurality of liquid discharge ports are symmetrically arranged on the bottom plate, and the bottom plate is arranged in the desulfurizing tower and is positioned below the circulating spraying layer or/and the packing layer.
2. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the bottom plate is fixed in the desulfurizing tower by adopting a support frame, the support frame is obliquely arranged in a ladder way, and the central position of the desulfurizing tower is highest.
3. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the liquid discharge port is arranged at the lowest position of the bottom plate.
4. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the air lifting cap is rectangular or circular.
5. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the air lifting cap adopts a liquid redistribution structure.
6. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the outlet end of the rotary-cut flue gas distributor is provided with a redistributor.
7. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the bottom plate, the air lifting cap and the rotary-cut flue gas distributor are all made of non-metal corrosion-resistant high-temperature-resistant wear-resistant materials.
8. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: the rotary-cut flue gas distributor is arranged along the periphery of the wall of the desulfurizing tower.
9. The rotational-cut vortex redistribution accumulated liquid tank for flue gas of claim 1, wherein: more than 10m of the diameter of the desulfurizing tower, the bottom plate is arranged in an inverted V shape from the middle to the periphery of the wall of the desulfurizing tower, the diameter of the desulfurizing tower is less than 10m, the single side of the bottom plate is obliquely arranged, and the lowest position of the bottom plate is provided with a liquid discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220152988.3U CN216677662U (en) | 2022-01-20 | 2022-01-20 | Smoke rotary-cut vortex redistribution hydrops groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220152988.3U CN216677662U (en) | 2022-01-20 | 2022-01-20 | Smoke rotary-cut vortex redistribution hydrops groove |
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| Publication Number | Publication Date |
|---|---|
| CN216677662U true CN216677662U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220152988.3U Active CN216677662U (en) | 2022-01-20 | 2022-01-20 | Smoke rotary-cut vortex redistribution hydrops groove |
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| CN (1) | CN216677662U (en) |
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2022
- 2022-01-20 CN CN202220152988.3U patent/CN216677662U/en active Active
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