CN104923020A - High-efficiency pneumatic pipe bundle phase-change dedusting and demisting device and application - Google Patents
High-efficiency pneumatic pipe bundle phase-change dedusting and demisting device and application Download PDFInfo
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- CN104923020A CN104923020A CN201510344478.0A CN201510344478A CN104923020A CN 104923020 A CN104923020 A CN 104923020A CN 201510344478 A CN201510344478 A CN 201510344478A CN 104923020 A CN104923020 A CN 104923020A
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Abstract
The invention relates to a high-efficiency pneumatic pipe bundle phase-change dedusting and demisting device and application. The device comprises a hollow barrel with two ends open, an upper barrel sealing plate, a lower barrel sealing plate, rotational flow sections, pipe-bundle-type water mist distribution sections and a water retaining section, the rotational flow sections of more than two stages are arranged coaxially in the inner-layer barrel from bottom to top at intervals, each pipe-bundle-type water mist distribution section is arranged coaxially between each two corresponding rotational flow sections, and the water retaining section is coaxially arranged on the inner-layer barrel below the upper barrel sealing plate in an outer-edge-sealed manner. The device can effectively remove liquid drops, dust and superfine dust of smoke systems or industrial waste gas systems, is good in demisting and dedusting effect and is lower in energy consumption and more energy saving when compared with wet-type electric dedusting. In addition, by the device, arrangement space is saved, and power equipment is omitted; the device has good dedusting and demisting effect while energy consumption is lowered, and can be applied to dedusting and demisting of industrial tail gas.
Description
Technical field
The invention belongs to chemical industry, environmental technology field, relate to dedusting demister, especially a kind of efficient aerodynamic tube bank phase transformation dedusting demister and application.
Background technology
In recent years, along with the progressively increase of China's economic strength and environmental protection standard are gradually strict, near-zero release was implemented to the discharge of major pollutants index, required the discharge index≤10mg/Nm of dirt
3.Conventional dedusting demister is difficult to reach requirement.
For the improvement of dirt, adopt more method at present, be removing big dust particle before desulphurization system, carry out final dusting by the demister of desulphurization system, dedusting index can reach 50 ~ 30mg/Nm
3.
Demister system after desulphurization system has good removal effect to the dust of particle diameter more than 10 μm, poor to the dust removal effect of less than 10 μm.It is wet-esp that the side of removing conventional is at present sent out, the powerful corona field that wet-esp utilizes electrode to be formed makes gas ionization, dust, droplet particle etc. obtain electronics and charged, under the impact interception, the acting in conjunction of absorption coalescence of electric field force, charged water spray, charged particle become trapped in dust collecting electrode, in dust collecting electrode, form continuous print moisture film simultaneously, to the dust below 10 μm, even more the dust of small particle diameter has good removal effect.But because the energy consumption of wet electricity is higher, harsher to the requirement of fabricating yard, so relevant application is restricted.
According to existing cyclone dust collector and Wet-way dust-collector principle, the particle in air-flow can be separated from air-flow and trap in wall by centrifugal force.Simultaneously due to the existence of superfine spray, superfine spray short time evaporation can produce phase transformation in dust-laden space, forms the concentration gradient of steam component simultaneously, is formed by around to the stefen flow that the nuclei of condensation move.Dust dust in steam condensation starts the microphysical processes of condensing and merging.Adding due to superfine spray simultaneously, the flue gas temperature difference improves, and condensate flow increases, and strengthens Brownian movement, strengthens ultrafine dust trapping ability.
By retrieval, not yet find the patent publication us relevant to patent application of the present invention.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of efficient aerodynamic is provided to restrain phase transformation dedusting demister, this device comprises eddy flow section, bundled tube water smoke distribution section and dash section, this device utilizes eddy flow principle and air conducting principle, effectively can improve the centrifugal force of air-flow, improve dedusting demisting efficiency, water smoke Transformation Principle is utilized to improve the condensation effect of ultrafine dust, effectively can improve the trapping ability of ultrafine dust, this efficient aerodynamic tube bank phase transformation dedusting demister can be applied in industrial tail gas dedusting demist aspect.
The object of the invention is to be achieved through the following technical solutions:
A kind of efficient aerodynamic tube bank phase transformation dedusting demister, described device comprises the cylindrical shell of the hollow of a both ends open, cylindrical shell upper sealing plate, shrouding under cylindrical shell, eddy flow section, bundled tube water smoke distribution section and dash section, this cylindrical shell comprises internal layer cylinder and outer layer barrel, described internal layer cylinder coaxial spaced is set in outer layer barrel, interlayer cavity is formed between this internal layer cylinder and outer layer barrel, superfine spray supply channel is set in this interlayer cavity, top between described internal layer cylinder and outer layer barrel and bottom are sealed connected together respectively by shrouding under the cylindrical shell upper sealing plate be arranged between internal layer cylinder and outer layer barrel and cylindrical shell, in described internal layer cylinder, coaxial spaced arranges the eddy flow section of more than two-stage from the bottom to top, bundled tube water smoke distribution section is coaxially set between adjacent two eddy flow sections, the coaxial outer fringe seal of described dash section is arranged on the internal layer cylinder below cylindrical shell upper sealing plate,
The hollow tube bank array structure of described bundled tube water smoke distribution Duan Weiyi, this bundled tube water smoke distribution section is made up of multiple radially uniform spaced hollow tube bank, this hollow tube bank is hollow pipe, can supply water and pass through in tube bank inside, the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected is provided with on the top of hollow tube bank, the two ends of this hollow tube bank are all connected with superfine spray supply channel and are installed together, this cylindrical shell upper sealing plate is shaped with multiple water intake end with superfine spray supply channel and the water side pipeline arranged that matches to import and export.
And described dash section is circular ring, and cross section can be inverted L-shaped, semicircle or triangle; Or the material of described dash section is carbon steel line with rubber, carbon steel enamel, fiberglass, stainless steel through hydrophobicity process, and thickness is 2 ~ 10mm; Or, the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected is provided with on the top of hollow tube bank.
And described internal layer cylinder and working media contact with each other, the material of this internal layer cylinder is PP, or is carbon steel line with rubber, carbon steel enamel, fiberglass, the stainless steel through hydrophobicity process; Described outer layer barrel is alveolate texture.
And the material of described outer layer barrel is PP, or be carbon steel line with rubber, carbon steel enamel, fiberglass, the stainless steel through hydrophobicity process.
And described tube pitch is 20 ~ 150mm.
And described atomizing spray mouth is circular port or nozzle; Or the cross section of described hollow tube bank is circular or raindrop shape; Or the top of described hollow tube bank is equipped with relative to both sides the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected.
And, described eddy flow section is cyclone, described cyclone comprises swirl vane axle and swirl vane, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, swirl vane axle and internal layer cylinder are coaxially arranged, install swirl vane between internal layer cylinder and swirl vane axle, the internal diameter of internal layer cylinder is identical with the external diameter of swirl vane.
And described swirl vane is the blade construction that propeller type tilts, and its angle of inclination becomes 30-60 degree with axis, and swirl vane can take plane or curve form, and the profile of projecting blade can be rectangle or fan-shaped.
The application of pneumatic tube bank phase transformation dedusting demister as above in industrial waste gas afterbody dedusting demist.
Advantage of the present invention and good effect are:
1, the eddy flow section of apparatus of the present invention is cyclone, cyclone comprises swirl vane axle and swirl vane, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, this dedusting demister utilizes eddy flow principle, add the centrifugal effect of air-flow, strengthen Brownian movement, contribute to particle separation in air-flow and trap in wall.
2, the bundled tube water smoke section of apparatus of the present invention is the array of hollow tube bank, by this section of access to plant, superfine spray chien shih saturated flue gas condensation in short-term can produce phase transformation in device, is formed by around to the stefen flow that the nuclei of condensation move, and then enhances the trapping ability of fine dust; Meanwhile, due to adding of superfine spray, the flue gas temperature difference improves, and condensate flow increases, and strengthens Brownian movement, strengthens ultrafine dust trapping ability; This section also has the effect of optimization device interior flow field simultaneously, strengthens the separating effect of eddy flow section further.
3, the dash section of apparatus of the present invention is circular annular form structure, can effectively reduce the drop of going out with flue gas, improves the demist dust removing effects of device.
4, apparatus of the present invention can remove drop, dust and ultrafine dust, demist, better dust removal effect effectively to flue gas system or industrial waste gas system afterbody, lower more energy-conservation with wet-esp phase specific energy consumption; Meanwhile, this device has saved arrangement space, does not have power-equipment, has good dedusting except fog effect, can be applied in industrial tail gas dedusting demist aspect under the condition improving energy consumption.
5, the bundled tube water smoke section of apparatus of the present invention also can be rinsed the inwall of internal layer cylinder, cyclone surface, decreases the gathering containing solid thing of inwall and cyclone surface, and decreasing solid can the possibility of secondary droplets, further increases dust removing effects; This section also has the effect of flue gas rectification, further increases higher level's eddy flow section centrifugal effect and improves the dedusting of device entirety except fog effect.
6, the outer layer barrel of apparatus of the present invention is alveolate texture, and the parallel connection being convenient to device uses, and makes Plant arrangement more save space.
7, apparatus of the present invention can be used alone or multiple device parallel connection use, the scope of application is extensive, restrain phase transformation dedusting demister by multiple efficient aerodynamic to be connected in parallel, therefore user can disposal ability according to actual needs carry out assembling and adjusting, bonding, welding or hole slot connection etc. can be adopted between monomer, easy to make, disposal ability obtains and improves widely.
Accompanying drawing explanation
Fig. 1 is that the structure of apparatus of the present invention partly cuts open connection diagram;
Fig. 2 be Fig. 1 overlook enlarged drawing;
Fig. 3 is the anatomical connectivity schematic diagram of bundled tube water smoke distribution section in Fig. 1;
Fig. 4 is the anatomical connectivity stereogram of bundled tube water smoke distribution section in Fig. 1;
Fig. 5 is the anatomical connectivity schematic diagram of cyclone of the present invention;
Fig. 6 is the anatomical connectivity stereogram of apparatus of the present invention;
Fig. 7 is that the anatomical connectivity of apparatus of the present invention partly cuts open stereogram.
Detailed description of the invention
For accompanying drawing embodiment, the invention will be further described below, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The structure that the present invention does not specifically describe in detail, all can be understood as the conventional structure of this area.
A kind of efficient aerodynamic tube bank phase transformation dedusting demister, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6 and Fig. 7, described device comprises the cylindrical shell 1 of the hollow of a both ends open, cylindrical shell upper sealing plate 3, shrouding 9 under cylindrical shell, eddy flow section 7, bundled tube water smoke distribution section 8 and dash section 2, this cylindrical shell comprises internal layer cylinder 4 and outer layer barrel 6, described internal layer cylinder coaxial spaced is set in outer layer barrel, interlayer cavity 5 is formed between this internal layer cylinder and outer layer barrel, superfine spray supply channel (not shown) is set in this interlayer cavity, top between described internal layer cylinder and outer layer barrel and bottom are sealed connected together respectively by shrouding under the cylindrical shell upper sealing plate be arranged between internal layer cylinder and outer layer barrel and cylindrical shell, in described internal layer cylinder, coaxial spaced arranges the eddy flow section of more than two-stage from the bottom to top, bundled tube water smoke distribution section is coaxially set between adjacent two eddy flow sections, the coaxial outer fringe seal of described dash section is arranged on the internal layer cylinder below cylindrical shell upper sealing plate.In the present embodiment, described dash section is circular ring, and cross section can be inverted "L" shaped, semicircle or leg-of-mutton etc., and the material of this dash section is carbon steel line with rubber, carbon steel enamel, fiberglass, stainless steel etc. through hydrophobicity process, and thickness is 2 ~ 10mm.
As shown in Figure 3 and Figure 4, the hollow tube bank array structure of described bundled tube water smoke distribution Duan Weiyi, this bundled tube water smoke distribution section is made up of multiple radially uniform spaced hollow tube bank 13, this hollow tube bank is hollow pipe, can supply water and pass through in tube bank inside, the spaced atomizing spray mouth 14 of radial equipartition that multiple and hollow tube bank is connected is provided with on the top of hollow tube bank, the two ends of this hollow tube bank are all connected with superfine spray supply channel and are installed together (not shown), this cylindrical shell upper sealing plate is shaped with multiple water intake end with superfine spray supply channel and the water side pipeline arranged that matches and imports and exports 10, for the turnover of superfine spray pipeline, can be supplied water to bundled tube water smoke distribution section by the import and export of this pipeline and superfine spray feed pipe, can supply water by external water system is unified, in the present embodiment, described tube pitch is 20 ~ 150mm.
In the present embodiment, described internal layer cylinder and working media contact with each other, and the material of this internal layer cylinder is PP, also can be carbon steel line with rubber, carbon steel enamel, fiberglass, stainless steel etc. through hydrophobicity process; Described outer layer barrel is alveolate texture, does not contact with working media, and material can be identical with internal layer cylinder, also can be different from internal layer cylinder.
In the present embodiment, the quantity of described eddy flow section is two-stage.
Described atomizing spray mouth is circular port or nozzle; Or the cross section of described hollow tube bank is circular or raindrop shape; Or the top of described hollow tube bank is equipped with relative to both sides the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected; In the present embodiment, the cross section of described hollow tube bank is raindrop shape, and described atomizing spray mouth is raindrop shape hole.
In the present embodiment, as shown in Figure 5, described eddy flow section is cyclone, described cyclone comprises swirl vane axle 11 and swirl vane 12, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, swirl vane axle and internal layer cylinder are coaxially arranged, and install swirl vane between internal layer cylinder and swirl vane axle, and the internal diameter of internal layer cylinder is identical with the external diameter of swirl vane.Swirl vane is the blade construction that propeller type tilts, and its angle of inclination becomes 30-60 degree with axis, and the quantity of swirl vane can be determined as the case may be, arranges five swirl vanes in the present embodiment; In the present embodiment, the angle of inclination of swirl vane and axis direction is 45 degree; Swirl vane can take plane or curve form, and the present embodiment is plane blade; The profile of projecting blade can be rectangle or fan-shaped, and the present embodiment is fan-shaped.
Efficient aerodynamic tube bank phase transformation dedusting demister described above can be used alone or the parallel connection of multiple device uses.
Utilize multiple efficient aerodynamic as above tube bank phase transformation dedusting demister to be connected in parallel and can form efficient aerodynamic tube bank phase transformation dedusting demist shunting means, link together by forms such as bonding, welding or hole slots between each efficient aerodynamic tube bank phase transformation dedusting demister.
The operation principle of efficient aerodynamic tube bank phase transformation dedusting demister of the present invention is as follows:
Industrial waste gas enters dedusting demister by the exhaust gas entrance of this device bottom, produce larger centrifugal force by undermost eddy flow section the particle in air-flow is separated from air-flow and traps on wall, bundled tube water smoke section sprays into superfine spray to device inside simultaneously, due to the existence of superfine spray, superfine spray short time evaporation can produce phase transformation in dust-laden space, form the concentration gradient of steam component simultaneously, formed by around to the nuclei of condensation move stefen flow, steam condenses in dust-containing area, dust in dust-containing area is made to start the microphysical processes of condensing and merging, adding due to superfine spray simultaneously, the flue gas temperature difference improves, and condensate flow increases, and strengthens Brownian movement, strengthens ultrafine dust trapping ability, simultaneously bundled tube water smoke section also can be rinsed device inside barrel, cyclone surface, reduces the gathering containing solid thing of inwall and cyclone surface, and reducing solid can the possibility of secondary droplets, improves dust removing effects, this section also has the effect of flue gas rectification, and a nearly step improves the centrifugal effect of higher level's eddy flow section, improves the dedusting of device entirety except fog effect.
Need Purge gas to eventually pass dash section, can effectively reduce the drop led out with waste gas, improve the demist dust removing effects of device, simultaneously because the outside cylindrical shell of device is alveolate texture, the parallel connection being convenient to device uses, and makes this Plant arrangement more save space.
Claims (9)
1. an efficient aerodynamic tube bank phase transformation dedusting demister, it is characterized in that: described device comprises the cylindrical shell of the hollow of a both ends open, cylindrical shell upper sealing plate, shrouding under cylindrical shell, eddy flow section, bundled tube water smoke distribution section and dash section, this cylindrical shell comprises internal layer cylinder and outer layer barrel, described internal layer cylinder coaxial spaced is set in outer layer barrel, interlayer cavity is formed between this internal layer cylinder and outer layer barrel, superfine spray supply channel is set in this interlayer cavity, top between described internal layer cylinder and outer layer barrel and bottom are sealed connected together respectively by shrouding under the cylindrical shell upper sealing plate be arranged between internal layer cylinder and outer layer barrel and cylindrical shell, in described internal layer cylinder, coaxial spaced arranges the eddy flow section of more than two-stage from the bottom to top, bundled tube water smoke distribution section is coaxially set between adjacent two eddy flow sections, the coaxial outer fringe seal of described dash section is arranged on the internal layer cylinder below cylindrical shell upper sealing plate,
The hollow tube bank array structure of described bundled tube water smoke distribution Duan Weiyi, this bundled tube water smoke distribution section is made up of multiple radially uniform spaced hollow tube bank, this hollow tube bank is hollow pipe, can supply water and pass through in tube bank inside, the atomizing spray mouth that multiple and hollow tube bank is connected is provided with on the top of hollow tube bank, the two ends of this hollow tube bank are all connected with superfine spray supply channel and are installed together, and this cylindrical shell upper sealing plate are shaped with multiple water intake end with superfine spray supply channel and the water side pipeline arranged that matches and import and export.
2. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 1, is characterized in that: described dash section is circular ring, and cross section can be inverted L-shaped, semicircle or triangle; Or the material of described dash section is carbon steel line with rubber, carbon steel enamel, fiberglass, stainless steel through hydrophobicity process, and thickness is 2 ~ 10mm; Or, the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected is provided with on the top of hollow tube bank.
3. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 1, it is characterized in that: described internal layer cylinder and working media contact with each other, the material of this internal layer cylinder is PP, or is carbon steel line with rubber, carbon steel enamel, fiberglass, the stainless steel through hydrophobicity process; Described outer layer barrel is alveolate texture.
4. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 3, is characterized in that: the material of described outer layer barrel is PP, or is carbon steel line with rubber, carbon steel enamel, fiberglass, the stainless steel through hydrophobicity process.
5. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 1, is characterized in that: described tube pitch is 20 ~ 150mm.
6. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 1, is characterized in that: described atomizing spray mouth is circular port or nozzle; Or the cross section of described hollow tube bank is circular or raindrop shape; Or the top of described hollow tube bank is equipped with relative to both sides the spaced atomizing spray mouth of radial equipartition that multiple and hollow tube bank is connected.
7. the efficient aerodynamic tube bank phase transformation dedusting demister according to any one of claim 1 to 6, it is characterized in that: described eddy flow section is cyclone, described cyclone comprises swirl vane axle and swirl vane, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, swirl vane axle and internal layer cylinder are coaxially arranged, install swirl vane between internal layer cylinder and swirl vane axle, the internal diameter of internal layer cylinder is identical with the external diameter of swirl vane.
8. efficient aerodynamic tube bank phase transformation dedusting demister according to claim 7, it is characterized in that: described swirl vane is the blade construction that propeller type tilts, its angle of inclination becomes 30-60 degree with axis, swirl vane can take plane or curve form, and the profile of projecting blade can be rectangle or fan-shaped.
9. the application of pneumatic tube bank phase transformation dedusting demister in industrial waste gas afterbody dedusting demist as described in any one of claim 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510344478.0A CN104923020A (en) | 2015-06-19 | 2015-06-19 | High-efficiency pneumatic pipe bundle phase-change dedusting and demisting device and application |
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| CN201510344478.0A CN104923020A (en) | 2015-06-19 | 2015-06-19 | High-efficiency pneumatic pipe bundle phase-change dedusting and demisting device and application |
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Cited By (6)
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| CN108916900A (en) * | 2018-05-24 | 2018-11-30 | 安徽工业大学 | A kind of fine grain system and method for steam phase transformation coupling low temperature electric precipitation removing |
| CN110038354A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of six side's sealing plates and its working method for the bundled tube demister with water blocking mechanism |
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| CN110038354A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of six side's sealing plates and its working method for the bundled tube demister with water blocking mechanism |
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Application publication date: 20150923 |