CN211562350U - Flue gas desulfurization post-treatment dust recovery device - Google Patents
Flue gas desulfurization post-treatment dust recovery device Download PDFInfo
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- CN211562350U CN211562350U CN201922258490.6U CN201922258490U CN211562350U CN 211562350 U CN211562350 U CN 211562350U CN 201922258490 U CN201922258490 U CN 201922258490U CN 211562350 U CN211562350 U CN 211562350U
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- flue gas
- gas desulfurization
- dust
- recovery device
- dust recovery
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Abstract
The utility model provides a flue gas desulfurization aftertreatment dust recovery unit. Flue gas desulfurization aftertreatment dust recovery device for solving above-mentioned technical problem, the utility model provides a flue gas desulfurization aftertreatment dust recovery device, include: an inner barrel; the outer barrel is sleeved on the outer surface of the inner barrel, the outer surface of the inner barrel is provided with a collecting hole, the inner wall of the inner barrel is fixedly connected with two fixing plates, and the bottoms of the fixing plates are rotatably connected with a cyclone. The utility model provides a flue gas desulfurization aftertreatment dust recovery unit carries out technical transformation through carrying out washing circulation tank top inner tube to increase swirler and collection orifice plate in inner tube, let the ammonium sulfate dust produce the whirl and collect through the collection hole through the effect of centrifugal force in the discharge process, improve the rate of recovery of ammonium sulfate dust, do not increase extra energy consumption and reduced the emission to the atmosphere dust again, thereby reach energy-concerving and environment-protective purpose.
Description
Technical Field
The utility model relates to a dust recovery device field especially relates to a flue gas desulfurization aftertreatment dust recovery device.
Background
In recent years, wet ammonia desulfurization devices are applied more and more mature in the field of boiler thermoelectric flue gas desulfurization, and along with the successful application of wet ammonia desulfurization in the aspect of ultralow emission of flue gas, ammonia desulfurization devices are selected for use in many thermal power plants, especially self-contained thermal power plants of chemical enterprises, and the enterprises often have ammonia desulfurization desulfurizing agents and ammonia water, so that the enterprises are extremely convenient. Ammonia process desulfurization can produce the by-product with lime gypsum process desulfurization the same in the desulfurization, ammonia process desulphurization unit generally all is furnished with ammonium sulfate aftertreatment system, carries out a solid-liquid separation with ammonium sulfate solution through the swirler, then gets into centrifuge and carries out the secondary separation with ammonium sulfate solution, dries ammonium sulfate through vibrated fluidized bed again and gets rid of moisture content, produces qualified ammonium sulfate product, but when carrying out the drying to ammonium sulfate, can produce a large amount of ammonium sulfate dusts.
In the prior art, a dust recovery device is generally used for recovering ammonium sulfate dust, a water washing circulation tank is mainly arranged behind an outlet pipeline of a draught fan to absorb fine ammonium sulfate dust generated in the operation of an after-treatment device, spraying and filling materials are arranged in the circulation tank to recover the dust, and tail gas is exhausted into the atmosphere through an exhaust funnel at the top of the water washing circulation tank; however, the device has a poor effect in the current practical application, and many devices cannot completely recycle fine dust.
Therefore, it is necessary to provide a flue gas desulfurization post-treatment dust recycling device to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flue gas desulfurization aftertreatment dust recovery device has solved current flue gas desulfurization aftertreatment dust recovery device and when using, can not retrieve the problem of tiny dust completely.
In order to solve the technical problem, the utility model provides a flue gas desulfurization aftertreatment dust recovery device, include:
an inner barrel;
the outer barrel is sleeved on the outer surface of the inner barrel, a collecting hole is formed in the outer surface of the inner barrel, two fixing plates are fixedly connected to the inner wall of the inner barrel, and the bottoms of the fixing plates are rotatably connected with a cyclone;
and the two loops are respectively and fixedly connected to the top and the bottom of the inner wall of the inner barrel, and one side of the outer surface of the outer barrel is communicated with a recovery pipe.
Preferably, the collecting holes are positioned in the range of 1200mm of the upper section peripheral side surface of the inner cylinder, and the diameter of the collecting holes is set to be 20 mm.
Preferably, the length and the diameter of the inner cylinder are respectively set to 3000mm and 700mm, and the length and the diameter of the outer cylinder are respectively set to 1300mm and 900 mm.
Preferably, the swirler has eight the same whirl boards to bond and forms, two the swirler all is located the lower half section of inner tube and interval set up to 700 mm.
Preferably, the top end and the bottom end of the outer cylinder are sealed through glass fiber reinforced plastic annular plates, and the diameter of the recovery pipe is set to be 80 mm.
Preferably, the inner wall of the inner cylinder is provided with a heat-resistant layer, and the outer surface of the inner cylinder and the outer surface of the outer cylinder are both provided with wear-resistant protective layers.
Before this dust recovery device is not installed, this flue gas desulfurization after-treatment system is when the ejection of compact at every turn, washing circulation tank upper portion export dust and mist smuggle secretly more obviously, washing circulation tank loss water yield exceeds 0.5 side per hour, and draught fan import air door aperture can not open greatly, too big mist smuggles secretly seriously, undersize packagine machine negative pressure is less, the big environmental difference of packagine machine dust during the ejection of compact influences operating personnel healthy, and dust and mist smuggle secretly cause pollution and corruption to roof and surrounding environment.
After this dust recovery device is installed, dust and mist smuggle the phenomenon and obviously reduce, discharge through the on-the-spot manual sampling test of third party detection mechanism and accord with national regulation emission standard completely, and the moisturizing volume of washing circulation groove obviously reduces, does not mend hardly, and draught fan air door aperture increases, no matter be between the packing or whole device district environment obviously obtains improving.
Compared with the prior art, the utility model provides a flue gas desulfurization aftertreatment dust recovery device has following beneficial effect:
the utility model provides a flue gas desulfurization aftertreatment dust recovery unit carries out technical transformation through carrying out washing circulation tank top inner tube, increases the height of inner tube to increase swirler and collection orifice plate in the inner tube, let the ammonium sulfate dust produce the whirl and collect through the collection hole through the effect of centrifugal force in the discharge process, improve the rate of recovery of ammonium sulfate dust, do not increase extra energy consumption and reduced the emission to the atmosphere dust again, thereby reach energy-concerving and environment-protective purpose.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a flue gas desulfurization post-treatment dust recovery device provided by the present invention;
FIG. 2 is a schematic view of the inner structure of the inner and outer barrels shown in FIG. 1;
FIG. 3 is a schematic structural view of a second embodiment of the flue gas desulfurization post-treatment dust recovery device provided by the present invention;
FIG. 4 is a partial cross-sectional view of the inner barrel shown in FIG. 3.
Reference numbers in the figures: 1. inner tube, 2, outer tube, 3, collecting hole, 4, fixed plate, 5, swirler, 6, ring, 7, recovery tube, 8, heat-resisting layer, 9, and abrasion-resistant protective layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a first embodiment of a flue gas desulfurization post-treatment dust recycling device provided by the present invention; fig. 2 is a schematic structural view of the inside of the inner and outer cylinders shown in fig. 1. Flue gas desulfurization aftertreatment dust recovery device includes:
an inner cylinder 1;
the outer barrel 2 is sleeved on the outer surface of the inner barrel 1, a collecting hole 3 is formed in the outer surface of the inner barrel 1, two fixing plates 4 are fixedly connected to the inner wall of the inner barrel 2, and a cyclone 5 is rotatably connected to the bottoms of the fixing plates 4;
and the two ring rings 6 are respectively and fixedly connected to the top and the bottom of the inner wall of the inner barrel 1, and one side of the outer surface of the outer barrel 2 is communicated with a recovery pipe 7.
The urceolus 2 cup joints at the first section of inner tube 1 for 300mm can be reserved on the top of inner tube 1, and intermediate layer of formation between the inner wall of 1 surface of inner tube and urceolus 2 retrieves in the smoke and dust enters into this intermediate layer through collecting hole 3, has seted up the through-hole on the fixed plate 4, makes the flue gas can be to the first section diffusion of inner tube.
The collecting holes 3 are positioned in the range of 1200mm of the upper section peripheral side surface of the inner cylinder 1, and the diameter of the collecting holes 3 is set to be 20 mm.
The length and the diameter of the inner cylinder 1 are respectively set to 3000mm and 700mm, and the length and the diameter of the outer cylinder 2 are respectively set to 1300mm and 900 mm.
Swirler 5 has eight the same whirl boards to bond and forms, two swirler 5 all is located the lower half section of inner tube 1 and interval set up to 700 mm.
The top and the bottom of urceolus 2 all are sealed through the glass steel crown plate, the diameter of recovery tube 7 sets up to 80 mm.
The specific manufacturing method of the recovery device comprises the following steps: firstly, cutting off a straight pipe section of an original exhaust funnel of a washing circulation tank, wherein the cutting distance is 3000mm, taking the section of glass fiber reinforced plastic pipeline as an inner cylinder 1 of the dust recovery device, drilling the inner circumference of the section of the inner cylinder 1 within 1200mm of the upper section by using a drilling machine, wherein the aperture is 20mm, the center distance of two holes is 50mm, the top end is provided with a distance of 300mm without drilling, the section of the inner cylinder is used as a connecting pipe of a rain-proof cap of the exhaust funnel, after all small holes are drilled, a section of glass fiber reinforced plastic pipeline with the length of 1300mm is prepared, the diameter of the glass fiber reinforced plastic pipeline is 200mm larger than that of the original exhaust funnel, the glass fiber reinforced plastic pipeline is used as an outer cylinder 2 of the device, the drilled part of the inner cylinder is inserted into the outer cylinder 2, then two glass fiber reinforced plastic rings 6 with the outer diameter of 900mm, the inner diameter of 700mm and the thickness of 2mm are sleeved into the inner cylinder 1 from the upper part and the lower part, testing leakage after curing, and preparing a plurality of 2mm rear glass steel plates after the leakage is qualified; according to the diameter of the inner barrel 1, 16 cyclone plates are processed, the cyclone plates are installed after being processed, every 8 cyclone plates are one group, two groups are installed together, two cyclones 5 are assembled, the distance between the two cyclones is 700mm, and the angle of the cyclone plates is 7-10 degrees, so that the resistance is not increased too much, and a good cyclone effect can be achieved; after these works, a hole is opened at the lower part of the outer tube 2 to serve as a dust and mist collecting port with the aperture of 80mm, a section of a FRP pipe with the length of 150mm and the diameter of 80mm and a FRP flange of DN80PN16 are prepared and bonded by resin and fiberglass cloth to form a recovery tube 7, the whole dust recovery device is installed after solidification, the device is hoisted to the position of the exhaust tube of the raw water washing circulation tank, the resin and the fiberglass cloth are bonded after the completion of the correction, the dust recovery pipe is configured after solidification, preparing a DN80 pipeline, a DN80PN16 glass fiber reinforced plastic flange block and a fastener according to the position condition of the field device, connecting the pipeline with a gas phase reserved interface of a post-processing ammonium sulfate liquid returning groove, a DN25 flushing water gap is arranged at the position close to the flange, and a rubber lining valve is arranged to be connected with a water replenishing pipeline of the water washing circulating groove and used for flushing the dust collecting pipeline. After waiting to manage to accomplish, start each operation equipment of aftertreatment and try on probation, it is the biggest to open draught fan import air door from the minimum, observe this dust recovery device's application effect, the change of the liquid level change condition and the moisturizing volume of record washing circulation groove, after the ejection of compact, open the washing water valve on the dust recovery device recovery pipeline and wash, retrieve this part ammonium sulfate dust and fog drop and get into the ammonium sulfate and return the cistern, return the liquid pump through the ammonium sulfate and send into in the desulfurizing tower and carry out recycle.
The utility model provides a flue gas desulfurization aftertreatment dust recovery device's theory of operation as follows:
the method comprises the following steps that dust coming out of a vibrating fluidized bed firstly enters a cyclone separator through a draught fan, most of the dust enters an ammonium sulfate hopper to enter a packaging machine under the centrifugal force action of the cyclone separator, the rest of the dust enters the lower part of a washing circulation tank through the upper part of the cyclone separator, firstly passes through a packing layer in the washing circulation tank, is intercepted by the packing layer, then is in reverse contact washing with process water from the upper part, most of the dust enters a liquid phase of the washing circulation tank after being washed, and the rest of the dust and fog drops carried in the washing circulation tank enter a dust recovery device through the upper part of the washing circulation tank;
at first through swirler 5 of inner tube 1 lower part, the direction of dust and droplet changes, produces the whirl under the effect of centrifugal force, and dust and droplet are collected in the intermediate layer of interior urceolus through collection hole 3 on inner tube 1 upper portion, discharge through recovery tube 7 of urceolus 2 lower part, flow to ammonium sulfate liquid return tank upper portion by gravity, set up on this pipeline and wash the water valve and will open this washing water valve and wash after the material is gone out at every turn, prevent that the dust from piling up too much and causing the pipeline to block up.
Compared with the prior art, the utility model provides a flue gas desulfurization aftertreatment dust recovery device has following beneficial effect:
the utility model provides a flue gas desulfurization aftertreatment dust recovery unit, through carrying out technical transformation to washing circulation tank top inner tube 1, increase the height of inner tube 1, and increase swirler 5 and collect the orifice plate in the inner tube, let the ammonium sulfate dust produce the whirl and collect through collecting hole 3 through the effect of centrifugal force in the discharge process, improve the rate of recovery of ammonium sulfate dust, do not increase extra energy consumption and reduced the emission to the atmosphere dust again, thereby reach energy-concerving and environment-protective purpose.
Second embodiment
Based on the flue gas desulfurization post-treatment dust recovery device that the first embodiment of this application provided, the second embodiment of this application proposes another kind of flue gas desulfurization post-treatment dust recovery device. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference between the schematic structural diagrams of the second embodiment of the flue gas desulfurization post-treatment dust recovery device provided by the second embodiment of the present application is that the schematic structural diagram of the second embodiment of the flue gas desulfurization post-treatment dust recovery device further includes:
the present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 3 and fig. 4 in combination, wherein fig. 3 is a schematic structural diagram of a second embodiment of a flue gas desulfurization post-treatment dust recycling device provided by the present invention; FIG. 4 is a partial cross-sectional view of the inner barrel shown in FIG. 3.
The inner wall of the inner cylinder 1 is provided with a heat-resistant layer 8, and the outer surfaces of the inner cylinder 1 and the outer cylinder 2 are both provided with a wear-resistant protective layer 9.
The even coating of heat-resistant layer 8 is on the inner wall of inner tube 1, have certain high temperature when the flue gas gets into inner tube 1, play heat-resistant guard action through inner tube 1, make inner tube 1 can be after long-term the use, can not damaged by high temperature, thereby play and prolong its life, heat-resistant layer 8 is mainly GN-207D high temperature seal anti-oxidant nano composite ceramic coating, can keep even relapse the good adhesive force of thermal cycle, these coatings provide superior protection to corrosive environment and thermal shock, can both avoid very fast and cure at room temperature, the relevant product parameter of coating: spraying and curing: curing at normal temperature for 40 minutes, drying after 24 hours, wherein five days are required for complete curing to reach the performance, and the surface gloss is as follows: 2.7Gloss Units at 60 °, solid content: 58% +/-2%, density: 927ft 2, viscosity: 66.20cP, recommended film thickness: 1.0mil, salt spray: 921hours, pencil hardness: 9h, thermal conductivity: 0.95;
the anti-wear protective layer 9 is uniformly coated on the outer surfaces of the inner cylinder 1 and the outer cylinder 2, so that the anti-friction performance of the two cylinders is improved, the two cylinders are prevented from being damaged due to the abrasion of external factors, the outer surfaces of the inner cylinder 1 and the outer cylinder 2 can be protected by the anti-wear protective layer 9, the NG537 ceramic reinforced wear-resistant paint is mainly used, the coating is convenient to construct, has low construction requirement, is naturally cured, has short drying time, can provide high-efficiency wear-resistant protection due to the thickness of a paint film of 350-550 mu m, can remove oil stains, residual rust, oxide scales and the like on the surface of a substrate before coating operation, recommends using a moderate-alkaline aqueous cleaning agent or a professional cleaning solvent to remove the oil stains, then, cleaning with clean water, constructing after drying, wherein shot blasting or sand blasting of the surfaces of all steel materials to be coated is required to reach Sa2.5 grade requirements, and if the working condition is not suitable for sand blasting or shot blasting, manually polishing until St3 is also suitable; and local repair is polished to St3 level. During construction, the substrate is prevented from being contaminated with grease or other dirt again, and the surface roughness is required to be controlled within the range of 30-50 mu m; and the construction is carried out in a dry state of the matrix, the spraying operation is carried out as soon as possible after rust removal, generally not more than 8 hours, the surface temperature and the environmental temperature of the steel are not lower than 8 ℃, the temperature of the matrix to be coated is not lower than 5 ℃, the relative humidity of air is not higher than 85 percent, and the construction is carried out in a narrow space in a ventilation and drying state, and an airless spraying, air-assisted spraying or conventional spraying mode is adopted.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a flue gas desulfurization aftertreatment dust recovery device which characterized in that includes:
an inner barrel;
the outer barrel is sleeved on the outer surface of the inner barrel, a collecting hole is formed in the outer surface of the inner barrel, two fixing plates are fixedly connected to the inner wall of the inner barrel, and the bottoms of the fixing plates are rotatably connected with a cyclone;
and the two loops are respectively and fixedly connected to the top and the bottom of the inner wall of the inner barrel, and one side of the outer surface of the outer barrel is communicated with a recovery pipe.
2. The flue gas desulfurization post-treatment dust recovery device according to claim 1, wherein the collection holes are located within 1200mm of the upper-stage peripheral side surface of the inner tube, and the diameter of the collection holes is set to 20 mm.
3. The flue gas desulfurization post-treatment dust recovery device according to claim 1, wherein the length and diameter of the inner cylinder are set to 3000mm and 700mm, respectively, and the length and diameter of the outer cylinder are set to 1300mm and 900mm, respectively.
4. The flue gas desulfurization post-treatment dust recovery device of claim 1, wherein the cyclones are formed by bonding eight identical cyclone plates, and both of the cyclones are located at the lower half section of the inner barrel and the distance between the cyclones is set to 700 mm.
5. The flue gas desulfurization post-treatment dust recovery device of claim 1, wherein the top end and the bottom end of the outer cylinder are sealed by a glass fiber reinforced plastic ring plate, and the diameter of the recovery pipe is set to 80 mm.
6. The flue gas desulfurization post-treatment dust recovery device of claim 1, wherein the inner wall of the inner tube is provided with a heat-resistant layer, and the outer surface of the inner tube and the outer surface of the outer tube are both provided with wear-resistant protective layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922258490.6U CN211562350U (en) | 2019-12-17 | 2019-12-17 | Flue gas desulfurization post-treatment dust recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922258490.6U CN211562350U (en) | 2019-12-17 | 2019-12-17 | Flue gas desulfurization post-treatment dust recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN211562350U true CN211562350U (en) | 2020-09-25 |
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| CN201922258490.6U Active CN211562350U (en) | 2019-12-17 | 2019-12-17 | Flue gas desulfurization post-treatment dust recovery device |
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| CN (1) | CN211562350U (en) |
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