CN214389454U - Rotating rhombic silk screen defogging device - Google Patents
Rotating rhombic silk screen defogging device Download PDFInfo
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- CN214389454U CN214389454U CN202023299606.XU CN202023299606U CN214389454U CN 214389454 U CN214389454 U CN 214389454U CN 202023299606 U CN202023299606 U CN 202023299606U CN 214389454 U CN214389454 U CN 214389454U
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Abstract
The utility model discloses a rotary diamond wire mesh defogging device, including arranging diamond wire mesh defogging system and the automatic rotation control system at the desulfurizing tower top. When the flue gas flows into rhombus silk screen defroster lower floor, under the interception of liquid drop and other fine particles that carry in the flue gas silk screen among the rhombus silk screen defroster, inertial separation takes place for fog drop and large granule, and the tiny particle takes place to congeal and sedimentation separation, and after the flue gas after the preliminary defogging of lower floor's silk screen reenters upper screen, defogging dust removal once more. This device combines the silk screen defroster with the connecting rod rotation, has characteristics such as high-efficient defogging dust removal, flue gas distribution are even, energy-conservation, adaptable different operating mode change, can solve the difficult problem that traditional defroster operating mode suitability is poor effectively, the resistance is big, easy scale deposit, easy jam, can effectively reduce the formation of "gypsum rain" and the secondary of flue gas carries the problem.
Description
Technical Field
The utility model relates to a defroster in the chemical industry technology especially relates to a rotatory rhombus silk screen defogging device.
Background
At present, in a thermal power plant, most of desulfurization systems adopt a wet limestone/gypsum method flue gas desulfurization system. The demister is an important device in a wet limestone/gypsum method flue gas desulfurization system, and is used for removing a large amount of fine liquid drops carried in wet flue gas after desulfurization, so that gypsum scale formation of downstream equipment and equipment pollution, blockage and corrosion caused by the gypsum scale formation are avoided. If a wet exhaust process is adopted, when the performance of the demister is poor, gypsum rain is easily caused, and the environment around a power plant is polluted. Optimize the traditional flue gas desulfurization operation process, improve desulfurization dust removal defogging efficiency, to preventing pollution and improve ecological environment and have very important meaning.
The demister is generally arranged at the top of the desulfurizing tower or at a flue of a flue gas outlet and is used for intercepting fine particles and water vapor carried in flue gas and avoiding corroding downstream equipment. Common demisters include baffling demisters, tubular demisters, cyclone plate demisters, screen mist eliminators and the like. The baffle mist eliminator uses the mutual collision between the liquid droplets and the solid surface to condense and separate the liquid droplets, and it is difficult to remove fine liquid droplets from the flue gas. The cyclone plate type demister separates liquid drops from solid particles by using cyclone centrifugal force generated when flue gas flows, but is greatly influenced by the flow velocity of the flue gas and is difficult to remove fine liquid drops in the flue gas; the tubular demister achieves the aim of demisting through inertial collision and direct interception, has obvious effect on removing liquid drops with the particle size of more than 400 mu m, but still has poor demisting effect on fine liquid drops; conventional screen cloth defroster adopts the stack of multilayer screen cloth, and although the dust removal effect is good, the structure is fixed, and unable all-round washing, easy jam, the running resistance is big, can't satisfy the requirement of variable operating mode, and the secondary carries seriously. How to overcome above-mentioned shortcoming under the condition of low resistance, develop novel efficient defroster, to optimizing wet flue gas desulfurization dust removal technology, reduce the emission of flue gas fine particle, avoid the corruption and the jam to low reaches equipment, have very important energy-conserving meaning and apparent economic benefits.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art's shortcoming and not enough, provide a rotatory rhombus silk screen defogging device, realize satisfying high-efficient defogging dust removal among the wet limestone gypsum method flue gas desulfurization system under the variable operating mode, reduce the emission of small droplet granule, reduce system resistance simultaneously to reduce the energy consumption.
The utility model discloses a following technical scheme realizes:
a rotary rhombic wire mesh demisting device comprises a demisting system and a washing water system thereof, wherein the demisting system is arranged at the top of a desulfurizing tower and is formed by a plurality of rhombic wire mesh demisters 2 which are distributed on the top of the desulfurizing tower or on a flue of a flue gas outlet in an array manner;
each rhombic wire mesh demister 2 is supported by a rotating shaft 4 and is mutually staggered, arrayed and distributed in a flat way;
the rhombic wire mesh demisters 2 arranged on the same rotating shaft 4 are mutually overlapped and rotated with the rhombic wire mesh demisters 2 on the other rotating shaft 4, so that the inclination angles of the groups of rhombic wire mesh demisters 2 are relatively adjustable;
when the desulfurized flue gas flows through the rhombic wire mesh demister 2, liquid drops and particles carried in the flue gas are adhered to the surface of the wire mesh; and discharging the purified flue gas out of the desulfurizing tower.
The rhombic wire mesh demister 2 is formed by wire meshes coated outside the rhombic supporting frame 41; the ratio of the long axis to the short axis of the rhombic wire mesh demister 2 is 2-3 times, and the rhombic wire mesh demister is slender and has a flow guide effect.
The wire mesh is a corrosion-resistant wire mesh, and the wire mesh is electrically connected with the diamond-shaped supporting frame 41 in an insulating manner. Detachable conjunction briquetting (not shown in the figure) is installed at four summits of rhombus wire mesh defroster 2 for further fastening wire mesh prevents not hard up.
The diameter of a single wire of the metal wire mesh is 0.08 mm-0.3 mm.
The washing water system comprises nozzle arrays arranged above and below the rhombic wire mesh demister 2 and is used for washing the rhombic wire mesh demister 2.
The rotating shaft 4 can be manually rotated, or driven by the external motor 1, or fed back to a computer according to the information of the flow direction, the flow speed, the flow, the pressure difference and the concentration of the flue gas collected by the sensor arranged in the flue, the rotating angle of the motor 1 is controlled by the computer, and the inclination angle of the diamond-shaped wire mesh demister 2 is adjusted in real time so as to adapt to the change of the working condition of the flue gas and the requirement of all-dimensional washing.
A defogging method for a rotary rhombic silk screen comprises the following steps:
when the desulfurized flue gas flow contacts the lower layer of the rhombic wire mesh demister 2, liquid drops and particles carried in the flue gas collide with the wire mesh under the action of inertia and adhere to the surface of the wire mesh under the action of Van der Waals force; the liquid drops on the silk screen are condensed and accumulated, and the liquid drops settle by the gravity of the liquid drops or flow to the silk screen interweaving position along the silk screen due to the capillary action of the silk screen, the liquid drops grow gradually due to the wettability of the filaments, the surface tension of the liquid drops and the capillary action of the silk screen, and when the gravity of the liquid drops exceeds the buoyancy of the gas and the combination force of the surface tension of the liquid drops, the liquid drops separate from the silk screen and fall; the flue gas after primary demisting by the lower-layer wire mesh of the diamond-shaped wire mesh demister 2 enters the upper-layer wire mesh again, and demisting is carried out again in the same way;
when the working condition of the desulfurizing tower changes, the angle of the rhombic wire mesh demister 2 is changed or the rhombic wire mesh demister is continuously rotated to adapt to the requirements of different working conditions and all-dimensional washing.
The angle of adjustment of rhombus silk screen defroster 2 is manual or automatic, and automatic means according to the flow direction, velocity of flow, flow and the concentration information feedback of the flue gas that the sensor that sets up in the flue gathered to the computer, by the turned angle of computer control motor 1, adjusts the inclination of rhombus silk screen defroster 2 in real time to the change of adaptation flue gas operating mode.
The rotating speed of the motor is adjustable.
The rhombic wire mesh demister 2 can be in a static rotating state or a rotating state so as to adapt to different working condition requirements.
Compared with the prior art, the utility model, following advantage and effect have:
(1) efficient demisting: rhombus silk screen defroster 2 comprises the multilayer silk screen, can be static, but interval or continuous rotation, and speed is adjustable, increase the vortex to the flue gas, the flue gas that is carrying the liquid drop is when getting into the silk screen, the flow direction changes, the liquid drop is continuous striking filament under the effect of inertia force, the effectual striking rate that has increased, simultaneously and the surface tension of liquid drop and the capillary action of filament, and the centrifugal separation that the rotation rate of rhombus silk screen defroster 2 produced, the effectual effect that has improved rhombus silk screen defroster 2's dust removal defogging.
(2) High-efficiency dust removal: when the fine particles in the flue gas flow in the rhombic wire mesh demister 2, the fine particles are easily adsorbed on the wire mesh b due to the fact that the brownian motion of the fine particles and the electrostatic action of the wire mesh material are superposed; in addition, when the silk thread of flue gas in the diamond wire mesh defroster 2 that flows by turns, compare traditional plane screen cloth, penetrating area grow, and the air current direction changes, and the easy vortex that produces of rhombus cylinder hollow effect has improved the collision efficiency between the tiny granule, is favorable to the coagulation and the settlement of tiny granule for the separation of tiny granule with the flue gas has realized high-efficient dust removal.
(3) The flue gas flows uniformly: the rhombic silk screen defroster 2 has the effect of water conservancy diversion equipartition flue gas, and when the flue gas got into rhombic silk screen defroster 2, because its water conservancy diversion effect makes flow field distribution more even, can effectively reduce the local secondary of flue gas and carry and the production of local separation phenomenon.
(4) The resistance is small: rhombus silk screen defroster 2 can rotate at the in-process that the defogging was removed dust, realizes washing at all-round no dead angle, has thoroughly solved the easy difficult problem that blocks up, the resistance is big of screen cloth defroster.
(5) Energy consumption is saved: the rhombic wire mesh demister 2 can rotate by utilizing the energy carried by the flue gas flow under the condition of not increasing additional energy input, and performs inertial separation and sedimentation and condensation separation, thereby realizing the effects of high-efficiency dust removal and demisting and realizing the purpose of energy conservation.
(6) The working condition adaptability is good: can rotate by different angles according to the load condition, and meets the defogging requirements of different working conditions. Rotatable rhombus silk screen defroster 2 can change rhombus silk screen defroster 2's rotation angle according to the change of the flow direction of entry flue gas, pressure differential and operating mode such as flow, better realization water conservancy diversion equipartition flue gas to improved rhombus silk screen defroster 2 and to the filter area of flue gas, improved rhombus silk screen defroster 2's defogging dust collection efficiency.
Drawings
Fig. 1 is the schematic view of the structural layout of the rotating diamond wire mesh defogging device of the present invention.
Fig. 2 is a side view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Examples
As shown in fig. 1-2. The utility model discloses a rotary diamond wire mesh defogging device, including arranging defogging system and the sparge water system at the desulfurizing tower top.
The demisting system is formed by a plurality of rhombic wire mesh demisters 2 which are distributed on a flue gas outlet flue at the top of the desulfurizing tower in an array manner;
each rhombic wire mesh demister 2 is supported by a rotating shaft 4 and is mutually staggered, arrayed and distributed in a flat way;
the rhombic wire mesh demisters 2 arranged on the same rotating shaft 4 are mutually overlapped and rotated with the rhombic wire mesh demisters 2 on the other rotating shaft 4, so that the inclination angles of the groups of rhombic wire mesh demisters 2 are relatively adjustable;
when the desulfurized flue gas flows through the rhombic wire mesh demister 2, liquid drops and particles carried in the flue gas are adhered to the surface of the wire mesh; and discharging the purified flue gas out of the desulfurizing tower.
The rhombic wire mesh demister 2 is formed by wire meshes coated outside the rhombic supporting frame 41; the ratio of the long axis to the short axis of the rhombic wire mesh demister 2 is 2-3 times, and the rhombic wire mesh demister is slender and has a flow guide effect.
The wire mesh is a corrosion-resistant wire mesh, and the wire mesh is electrically connected with the diamond-shaped supporting frame 41 in an insulating manner. The wire mesh is generally made of stainless steel.
The diameter of a single wire of the metal wire mesh is 0.08 mm-0.3 mm. The specific diameter can be flexibly used according to the specific application requirement. Detachable conjunction briquetting (not shown in the figure) is installed at four summits of rhombus wire mesh defroster 2 for further fastening wire mesh prevents not hard up.
The washing water system comprises nozzle arrays 3 arranged above and below the rhombic wire mesh demister 2 and used for washing the rhombic wire mesh demister 2.
The rotating shaft 4 can be manually rotated, or driven by the external motor 1, or fed back to a computer according to the flow direction, flow velocity, flow and concentration information of the flue gas collected by a sensor arranged in the flue, the rotating angle of the motor 1 is controlled by the computer, and the inclination angle of the diamond-shaped wire mesh demister 2 is adjusted in real time to adapt to the change of the working condition of the flue gas.
The flushing water system uses high pressure jet up and down flushing through the nozzle array 3. The high-pressure washing water system can adopt a variable water volume regulation and control system, and is connected with a water balance regulation and control system and a demister pressure difference feedback system so as to ensure that accumulated dirt on the diamond-shaped wire mesh demister 2 can be removed in time. The washing water arrangement is formed by a plurality of conical nozzle arrays which are arranged in a pipe array and used for spraying water upwards and downwards, and the water pressure is 0.15-0.25 MPa. The rhombic wire mesh demister 2 can be rotated in the washing process, so that the washing is more thorough and clean.
The utility model combines the principles of inertia separation, coagulation and sedimentation, when the liquid drops carried in the flue gas pass through the lower layer screen mesh in the diamond-shaped screen mesh demister 2 at a certain speed, the liquid drops collide with the screen mesh for sedimentation due to the inertia effect of the liquid drops, thereby realizing the capture of the fog drops; the fine particles of the flue gas are adhered to the surface of the fine wire under the action of Van der Waals force, the fine particles are gradually grown along with the coagulation and accumulation of the fine particles on the surface of the fine wire, and when the gravity of the fine particles exceeds the buoyancy of the gas rising, the fine particles are separated from the wire mesh and fall, so that the sedimentation separation of the fine particles is realized.
When the flue gas that is smuggleing with the liquid drop is around flowing lower floor's silk screen, the flow direction changes, and along with the intensity of the rotatory aggravation turbulent flow of rhombus silk screen defroster 2, the production subsides and takes place the separation. Flue gas after the preliminary defogging of lower floor's silk screen reentrants upper silk screen, carries out defogging once more, can effectual improvement defogging efficiency.
The utility model adopts the rotatable rhombic silk screen demister 2, the rhombic silk screen demister 2 is a slender rhombus, has the function of guiding flue gas, forms flue gas flowing with even distribution, effectively improves the contact area between the flue gas and the silk screen, improves the collision efficiency between fog drops and fine particles, and realizes effective coagulation and sedimentation; and the inertial collision between the fog drops and the fine particles and the silk screen improves the inertial separation efficiency, thereby realizing high-efficiency demisting and dedusting.
The utility model discloses rotatory rhombus silk screen defogging method, the accessible is realized as follows step:
when the desulfurized flue gas flow contacts the lower layer of the rhombic wire mesh demister 2, liquid drops and particles carried in the flue gas collide with the wire mesh under the action of inertia and adhere to the surface of the wire mesh under the action of Van der Waals force; the liquid drops on the silk screen are condensed and accumulated, and the liquid drops settle by the gravity of the liquid drops or flow to the silk screen interweaving position along the silk screen due to the capillary action of the silk screen, the liquid drops grow gradually due to the wettability of the filaments, the surface tension of the liquid drops and the capillary action of the silk screen, and when the gravity of the liquid drops exceeds the buoyancy of the gas and the combination force of the surface tension of the liquid drops, the liquid drops separate from the silk screen and fall; the flue gas after primary demisting by the lower-layer wire mesh of the diamond-shaped wire mesh demister 2 enters the upper-layer wire mesh again, and demisting is carried out again in the same way; and discharging the flue gas subjected to multiple purification outside the desulfurization tower.
When the desulfurization working condition changes, the angle of the diamond wire mesh demister 2 is changed or the diamond wire mesh demister is continuously rotated to adapt to different working conditions.
The angle of adjustment of rhombus silk screen defroster 2 is manual or automatic, and automatic means according to the flue gas flow direction, velocity of flow, pressure differential, flow and the concentration information feedback that the sensor that sets up in the flue gathered to the computer, by the turned angle of computer control motor 1, adjusts the inclination of rhombus silk screen defroster 2 in real time to the change of adaptation flue gas operating mode.
The rotating speed of the motor is adjustable, and the rotating speed can be set according to different process requirements.
The rhombic wire mesh demister 2 can be in a static rotating state or a rotating state so as to adapt to the requirements of different working conditions and omnibearing washing.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (6)
1. The utility model provides a rotary diamond wire mesh defogging device, is including arranging defogging system and the sparge water system at the desulfurizing tower top, its characterized in that: the demisting system is formed by a plurality of rhombic wire mesh demisters (2), and the demisting systems are distributed on the top of the desulfurizing tower or on a flue of a flue gas outlet in an array manner;
each rhombic wire mesh demister (2) is supported by a rotating shaft (4), and the rhombic wire mesh demisters are mutually staggered, arrayed, tiled and distributed;
the rhombic wire mesh demisters (2) arranged on the same rotating shaft (4) are mutually overlapped and rotated with the rhombic wire mesh demisters (2) on the other rotating shaft (4), so that the inclination angles of the rhombic wire mesh demisters (2) are relatively adjustable;
when the desulfurized flue gas flows through the rhombic wire mesh demister (2), liquid drops and particles carried in the flue gas are adhered to the surface of a wire mesh; and discharging the purified flue gas out of the desulfurizing tower.
2. The rotary diamond wire mesh defogging device recited in claim 1, wherein: the rhombic wire mesh demister (2) is formed by wire meshes coated outside the rhombic supporting frame (41); the ratio of the long axis to the short axis of the rhombic wire mesh demister (2) is 2-3 times, and the rhombic wire mesh demister is slender and has a flow guide effect.
3. The rotary diamond wire mesh defogging device recited in claim 2, wherein: the wire mesh is a corrosion-resistant wire mesh, and the wire mesh is electrically connected with the diamond-shaped supporting frame (41) in an insulating manner.
4. The rotary diamond wire mesh defogging device recited in claim 3, wherein: the diameter of a single wire of the metal wire mesh is 0.08 mm-0.3 mm.
5. The rotary diamond wire mesh defogging device recited in claim 4, wherein: the washing water system comprises nozzle arrays (3) arranged above and below the rhombic wire mesh demister (2) and used for washing the rhombic wire mesh demister (2).
6. The rotary diamond wire mesh defogging device recited in claim 5, wherein: the rotating shaft (4) can be manually rotated, or driven by an external motor (1), or fed back to a computer according to the information of the flow direction, the flow speed, the flow and the concentration of the flue gas collected by a sensor arranged in a flue, the rotating angle of the motor (1) is controlled by the computer, and the inclination angle of the rhombic wire mesh demister (2) is adjusted in real time to adapt to the change of the working condition of the flue gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023299606.XU CN214389454U (en) | 2020-12-30 | 2020-12-30 | Rotating rhombic silk screen defogging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023299606.XU CN214389454U (en) | 2020-12-30 | 2020-12-30 | Rotating rhombic silk screen defogging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717615A (en) * | 2020-12-30 | 2021-04-30 | 华南理工大学 | Defogging method and device for rotary rhombic silk screen |
| CN114534421A (en) * | 2022-03-24 | 2022-05-27 | 安徽顺达环保科技股份有限公司 | Multi-stage guiding and purifying device for blast furnace flue gas and implementation method |
| CN116440643A (en) * | 2023-04-19 | 2023-07-18 | 嘉兴市绿色能源有限公司 | Garbage incineration treatment system |
-
2020
- 2020-12-30 CN CN202023299606.XU patent/CN214389454U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717615A (en) * | 2020-12-30 | 2021-04-30 | 华南理工大学 | Defogging method and device for rotary rhombic silk screen |
| CN114534421A (en) * | 2022-03-24 | 2022-05-27 | 安徽顺达环保科技股份有限公司 | Multi-stage guiding and purifying device for blast furnace flue gas and implementation method |
| CN114534421B (en) * | 2022-03-24 | 2023-12-15 | 安徽顺达环保科技股份有限公司 | Multistage guiding purification device for blast furnace flue gas and implementation method |
| CN116440643A (en) * | 2023-04-19 | 2023-07-18 | 嘉兴市绿色能源有限公司 | Garbage incineration treatment system |
| CN116440643B (en) * | 2023-04-19 | 2024-02-23 | 嘉兴市绿色能源有限公司 | Garbage incineration treatment system |
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