CN204275727U - A kind of spray column demister - Google Patents
A kind of spray column demister Download PDFInfo
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- CN204275727U CN204275727U CN201420659381.XU CN201420659381U CN204275727U CN 204275727 U CN204275727 U CN 204275727U CN 201420659381 U CN201420659381 U CN 201420659381U CN 204275727 U CN204275727 U CN 204275727U
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- filter core
- plate
- demist assembly
- hollow filter
- spray column
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Abstract
The utility model provides a kind of spray column demister, comprise: one-level demist assembly and secondary demist assembly, the below of described secondary demist assembly is located at by described one-level demist assembly and the two is at a distance of a distance, and flue gas flows through described one-level demist assembly and described secondary demist assembly successively; Described one-level demist assembly comprises the waveform plate be arranged in parallel, forms corrugated gas channel between adjacent described waveform plate; Described secondary demist assembly comprises double-deck hollow filter core and is connected and fixed the tube sheet of filter core, and the skin of described hollow filter core is microporous fibre coalescing layer, and internal layer is stainless steel insert supporting layer; Described hollow filter core is provided with the micropore that can pass through for flue gas.The critical dimension removing droplet can be reduced by the utility model, and then improve the removal efficiency of flue gas, reduce the corrosion of environment to external world, and effectively avoid secondary pollution.
Description
Technical field
The utility model relates to fume treatment technical field, espespecially a kind of spray column demister.
Background technology
The demister structure of dust-laden sour gas spray column is a difficult problem of industry always, due in the flue gas after washing, existing saliferous, even containing the free drop of slurry, has again the grit of trace simultaneously, and exists while drop and grit and often cause fatal pollution to demister.
In prior art, the demister of dust-laden sour gas spray column generally adopts deflector type demister or spiral-flow type demister, although these two kinds of demisters avoid grit blocking, but the critical dimension removing droplet is larger, the efficiency removing 50 μm of drops especially below 30 μm of sizes is too low, causes efflux gas to contain the free drop (white cigarette) of a large amount of 10-50 μm.After testing, the droplet separation accuracy of above-mentioned demister is: in discharged gas fume, the free droplet content of more than 15 μm is not more than 75mg/Nm3.Which not only adds the extraneoas loss of shower water in spray column, and the acid impurities contained by it also can cause corrosion to surrounding devices, and further secondary pollution be caused to environment.
Utility model content
The purpose of this utility model is to provide a kind of spray column demister, can reduce the critical dimension removing droplet, and then improves the removal efficiency of flue gas, reduces the corrosion of environment to external world, and effectively avoids secondary pollution.
The technical scheme that the utility model provides is as follows:
A kind of spray column demister, comprising:
One-level demist assembly and secondary demist assembly, the below of described secondary demist assembly is located at by described one-level demist assembly and the two is at a distance of a distance, and flue gas flows through described one-level demist assembly and described secondary demist assembly successively;
Described one-level demist assembly comprises the waveform plate be arranged in parallel, forms corrugated gas channel between adjacent described waveform plate;
Described secondary demist assembly comprises double-deck hollow filter core and is connected and fixed the tube sheet of filter core, and the skin of described hollow filter core is microporous fibre coalescing layer, and internal layer is stainless steel insert supporting layer; Described hollow filter core is provided with the micropore that can pass through for flue gas.
Preferably, the spacing of described one-level demist assembly and described secondary demist assembly is 1-3m.
Preferably, the height of described waveform plate is 160-350mm;
Preferably, the thickness of described waveform plate is 2-4mm;
Preferably, the spacing of adjacent described waveform plate is 15-50mm;
Preferably, the arc angle of described waveform plate at its waveform place is 30-100 °.
Preferably, described waveform plate is provided with hook-type plate, between itself and described waveform plate, forms the space of an opening, and this opening is arranged towards the inflow direction of flue gas.
Preferably, the crest location place of the waveform of described waveform plate is located at by described hook-type plate.
Preferably, the tangent line angle of described hook-type plate and described waveform plate is 25-50 °;
Preferably, described hook-type plate comprises the straight plate and arc two parts that are connected, and one end of described straight plate is connected to described waveform plate, and the arc angle of described arc is 30-70 °.
Preferably, described hollow filter core comprises multiple cylinder type hollow filter core be triangularly arranged, and multiple described cylinder type hollow filter core is fixed on described tube sheet.
Preferably, the height of described cylinder type hollow filter core is 1.5-2.0m;
Preferably, the diameter of described cylinder type hollow filter core is 50-150mm;
Preferably, the spacing of adjacent described cylinder type hollow filter core is 10-15mm.
Preferably, described hollow filter core is folded to form by the double-decker being provided with described micropore;
Preferably, described microporous fibre coalescing layer is made up of the sintered fiber felt of aperture asymmetric distribution.
The spray column demister that the utility model provides can overcome the inefficiencies of prior art, reduces the critical dimension removing droplet, and then improves the removal efficiency of flue gas.Spray column demister of the present utility model comprises one-level demist assembly and secondary demist assembly two parts, and flue gas flows through one-level demist assembly and secondary demist assembly successively.Wherein, one-level demist assembly is the waveform plate structure forming waveform gas channel, and the flue gas flow through can be made to produce baffling.Flue gas when baffling can due to turn to centrifugal force and with the rubbing action of waveform plate, suction-operated, and the surface tension of liquid makes drop increasing, until the drop gathered arrive greatly climbing power that the gravity that himself produces exceedes gas and surface tension of liquid with joint efforts time, drop just gets off from waveform plate is separated on the surface.Secondary demist assembly is the double-layer hollow filter core being provided with micropore, and its separating mechanism is different with the mechanism of one-level demist assembly, except inertial impaction, also has directly interception and diffusive interception.Direct interception, namely utilizes the micropore of filter material that the drop in air-flow is intercepted surface of filter medium; Diffusive interception, namely utilizes fine droplet irregular movement in the gas flow (Brownian movement), is added to the probability of filter material impact interception.Direct interception is different from inertial collision with diffusive interception, and when gas flow reduces, separative efficiency can rise.One-level demist assembly is positioned at the bottom of demister, directly in the face of high humidity content gas.Gas is unimpeded due to the runner spaciousness formed between waveform plate, thus can pass through smoothly.This structure is less scaling, and can unconfined blowdown.One-level demist assembly is used for the drop of efficient removal more than 30 μm sizes, and blocks grit to the coalescent pollution that may cause.And the secondary demist assembly being positioned at demister top is precision controlling assembly of the present utility model, determine the final separation accuracy of demister, be mainly used in removing the fine droplet of less than 30 μm that deflector type one-level demist assembly cannot be separated, the critical mist droplet particle size that retains of gas-liquid separation is 1-10 μm.The advantage of this fabricated structure of the utility model is the blocking contact scar can preventing demister, ensures the long-term operation Effec-tive Function of demister, can remain that again the droplet content of discharged gas fume is less than 10mg/Nm3 within the cycle of operation.
Accompanying drawing explanation
Below by clearly understandable mode, accompanying drawings preferred embodiment, is further described the above-mentioned characteristic of spray column demister, technical characteristic, advantage and implementation thereof.
Fig. 1 is the structural representation of a kind of embodiment of one-level demist assembly of the present utility model;
Fig. 2 is the structural representation of a kind of embodiment of secondary demist assembly of the present utility model;
Fig. 3 is the structural representation of a kind of embodiment of spray column demister of the present utility model.
Drawing reference numeral illustrates:
1-waveform plate; 2-hook-type plate; The tangent line angle of α-hook-type plate and waveform plate; The spacing of d-adjacent wave shape wave plate; The height of H-waveform plate;
The hollow filter core of 3-; The diameter of a-cylinder type hollow filter core; The height of b-cylinder type hollow filter core; The spacing of the hollow filter core of c-adjacent column shape;
The spacing of G-one-level demist assembly and secondary demist assembly.
Detailed description of the invention
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, contrast accompanying drawing is illustrated detailed description of the invention of the present utility model below.Apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, and obtain other embodiment.
For making simplified form, only schematically show the part relevant to the utility model in each figure, they do not represent its practical structures as product.In addition, be convenient to make simplified form understand, there are the parts of identical structure or function in some figure, only schematically depict one of them, or only marked one of them.In this article, " one " not only represents " only this ", also can represent the situation of " more than one ".
In an embodiment of the present utility model, with reference to Fig. 1, Fig. 2, Fig. 3, spray column demister comprises the secondary demist assembly two parts on one-level demist assembly and the top being located at bottom, wherein one-level demist assembly be located at the below of secondary demist assembly and the two in a distance, flue gas flows through this one-level demist assembly and secondary demist assembly successively.
One-level demist assembly comprises the waveform plate 1 be arranged in parallel, and between adjacent waveform plate 1, form the corrugated gas channel that can pass through for flue gas.As shown in Figure 1, waveform plate 1 comprises and once turning to, and can make flue gas, when flowing through, baffling occur.In other embodiments, waveform plate also can comprise and repeatedly turning to.
Secondary demist assembly comprises the double-deck hollow filter core 3 be connected with tube sheet, and its skin is microporous fibre coalescing layer, and this microporous fibre coalescing layer is made up of the sintered fiber felt of aperture asymmetric distribution; Internal layer is stainless steel insert supporting layer; And hollow filter core 3 is provided with the micropore that can pass through for flue gas.The double-decker of hollow filter core refers to that the panel forming filter core is fitted by the double-layer structure being provided with micropore (microporous fibre coalescing layer and stainless steel insert supporting layer) to be formed, the structure sheaf that flue gas first passes through when flowing through filter core is for outer, and the structure sheaf passed through afterwards is internal layer.The critical dimension of the drop separation of medium is 1-10 μm.
In other embodiments of the present utility model, with reference to Fig. 3, the spacing G of one-level demist assembly and secondary demist assembly is 1-3m.This spacing also can adjust according to actual conditions.
In other embodiments of the present utility model, with reference to Fig. 1, the height H of waveform plate is 160-350mm; The thickness of waveform plate is 2-4mm; The spacing d of adjacent wave shape wave plate is 15-50mm; The arc angle of waveform plate at its waveform place is 30-100 °.
In other embodiments of the present utility model, with reference to Fig. 1, in order to strengthen collision effect, improving drop removal effect, waveform plate 1 arranges hook-type plate 2 further.The space of an opening is formed between hook-type plate 2 and waveform plate 1, as shown in the figure, this opening is arranged towards the inflow direction of flue gas, to make flue gas when upwards continuing flowing in the direction of the arrow, the partial drop that baffling is formed enters the space between hook-type plate and waveform plate from this opening, and collide with hook-type plate, drop is fallen be recovered to remove.Preferably, hook-type plate can be arranged on the steering position place of waveform plate, such as, crest location shown in Fig. 1, and collision effect is better.
In other embodiments of the present utility model, with reference to Fig. 1, the tangent line angle α of hook-type plate and waveform plate is 25-50 °.Hook-type plate comprises the straight plate and arc two parts that are connected, and one end of straight plate is connected with waveform plate, and the other end is connected with arc, and the arc angle of arc is 30-70 °.
In other embodiments of the present utility model, with reference to Fig. 2, hollow filter core 3 is included in multiple cylinder type hollow filter cores that the cross section of tower is triangularly arranged, and multiple cylinder type hollow filter core is fixed on tube sheet.The plate face of hollow filter core is provided with the micropore passed through for flue gas.The height b of cylinder type hollow filter core is 1.5-2.0m; The diameter a of cylinder type hollow filter core is 50-150mm; The spacing c of the hollow filter core of adjacent column shape is 10-15mm.
In other embodiments of the present utility model, with reference to Fig. 2, hollow filter core is folded to form by the double-decker (doubling plate) being provided with micropore, and this structure is more easily shaped, and also can strengthen the collision effect of drop simultaneously, improves removal efficiency.
In a complete embodiment of spray column demister of the present utility model as shown in Figure 3, one-level demist assembly is fixed into disc demist assembly, is fixed on the support ring of spray column wall, and is positioned at the bottom of demister; Secondary demist assembly is positioned at top, between the two at a distance of 1-3m.Two demist assemblies to be integrally installed in spray column the position of above liquid spraying layer about 2.5 meters.If there is shaped Venturi dedusting assembly in tower, then demister need be installed on venturi assembly top, and keeps the distance of 3-5 rice with venturi top spraying layer, to reduce droplet load.
With reference to Fig. 3, when the gas containing mist flows through one-level demist assembly with certain speed, due to the inertial impaction effect of gas, mist and waveform plate collide and are attached over the surface of the panel.The diffusion of mist on the surface of waveform plate, the gravitational settling of mist make mist form larger drop and move forward to waveform plate with air-flow be folded to structure place (i.e. air-flow generation baffling place), due to turn to centrifugal force and with the rubbing action of waveform plate, suction-operated, and the surface tension of liquid makes drop increasing, until the drop gathered arrive greatly climbing power that the gravity that himself produces exceedes gas and surface tension of liquid with joint efforts time, drop just gets off from waveform plate is separated on the surface.The structure that is folded to of waveform plate adds the chance that mist is captured more, and the mist be not removed is captured through identical effect at next turning, such repeated action, thus drop entrained in removing gas.And further, the hook-type plate of runner direction change place, also can play the effect that strengthening collision is separated, improve the separative efficiency of drop high.The waveform plate quantity of one-level demist assembly and runner design meet in runner that gas flow rate is in 2.5-5.5m/s scope, and flue gas is 100-150Pa by the pressure drop of one-level demist assembly.One-level demist components apart efficiency is 30 μm, and the removal efficiency of drop is greater than 99.9%.
As shown in Figure 3, band liquid smoke gas from the superficies of filter core by filter core, liquid particle by collision, tackle, diffusion mechanism is blocked outer surface in filter core, after demist, gas is attached from filter core inner layer sheet emaciated face, outside flue discharge system.Drop falls in the water receiving tank of filter core bottom at the coalescent rear metal needle below filter core of filter core superficies, and returns spray column from the port at water receiving tank two ends.Flue gas is 0.05-0.5m/s by the speed of secondary demist assembly, and flue gas is 150-250Pa by the pressure reduction of filter core, and the separative efficiency of secondary demist assembly is: the clearance of 10 μm of drops is greater than 99.9%.
The corrosion of spray column demister acid gas of the present utility model, discharged gas fume droplet content is low.Flue gas is not more than 400Pa by the pressure drop of demister, and discharged gas fume droplet content is less than 10mg/m
3, almost can eliminate white cigarette completely, improve separative efficiency, decrease water consumption and environmental pollution.
It should be noted that above-described embodiment all can independent assortment as required.The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. a spray column demister, is characterized in that, comprising:
One-level demist assembly and secondary demist assembly, the below of described secondary demist assembly is located at by described one-level demist assembly and the two is at a distance of a distance, and flue gas flows through described one-level demist assembly and described secondary demist assembly successively;
Described one-level demist assembly comprises the waveform plate be arranged in parallel, forms corrugated gas channel between adjacent described waveform plate;
Described secondary demist assembly comprises double-deck hollow filter core and is connected and fixed the tube sheet of filter core, and the skin of described hollow filter core is microporous fibre coalescing layer, and internal layer is stainless steel insert supporting layer; Described hollow filter core is provided with the micropore that can pass through for flue gas.
2. spray column demister according to claim 1, is characterized in that:
The spacing of described one-level demist assembly and described secondary demist assembly is 1-3m.
3. spray column demister according to claim 1, is characterized in that:
The height of described waveform plate is 160-350mm;
And/or;
The thickness of described waveform plate is 2-4mm;
And/or;
The spacing of adjacent described waveform plate is 15-50mm;
And/or;
The arc angle of described waveform plate at its waveform place is 30-100 °.
4. spray column demister according to claim 1, is characterized in that:
Described waveform plate is provided with hook-type plate, between itself and described waveform plate, forms the space of an opening, and this opening is arranged towards the inflow direction of flue gas.
5. spray column demister according to claim 4, is characterized in that:
The crest location place of the waveform of described waveform plate is located at by described hook-type plate.
6. spray column demister according to claim 5, is characterized in that:
The tangent line angle of described hook-type plate and described waveform plate is 25-50 °;
And/or;
Described hook-type plate comprises the straight plate and arc two parts that are connected, and one end of described straight plate is connected to described waveform plate, and the arc angle of described arc is 30-70 °.
7. the spray column demister according to any one of claim 1-6, is characterized in that:
Described hollow filter core comprises multiple cylinder type hollow filter core be triangularly arranged, and multiple described cylinder type hollow filter core is fixed on described tube sheet.
8. spray column demister according to claim 7, is characterized in that:
The height of described cylinder type hollow filter core is 1.5-2.0m;
And/or;
The diameter of described cylinder type hollow filter core is 50-150mm;
And/or;
The spacing of adjacent described cylinder type hollow filter core is 10-15mm.
9. the spray column demister according to any one of claim 1-6, is characterized in that:
Described hollow filter core is folded to form by the double-decker being provided with described micropore;
And/or;
Described microporous fibre coalescing layer is made up of the sintered fiber felt of aperture asymmetric distribution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659381.XU CN204275727U (en) | 2014-11-06 | 2014-11-06 | A kind of spray column demister |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659381.XU CN204275727U (en) | 2014-11-06 | 2014-11-06 | A kind of spray column demister |
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| CN204275727U true CN204275727U (en) | 2015-04-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944481A (en) * | 2016-06-16 | 2016-09-21 | 东北电力大学 | Demister |
| CN106890535A (en) * | 2017-04-27 | 2017-06-27 | 北京纽堡科技有限公司 | Chromium mist purifier and chromium mist cleaning system |
| CN110124503A (en) * | 2019-04-30 | 2019-08-16 | 上海安赐环保科技股份有限公司 | A kind of flue gas demisting dedusting disappears white device and technique |
| CN114797467A (en) * | 2022-04-25 | 2022-07-29 | 南通中船机械制造有限公司 | Desulfurizing tower for ship tail gas and desulfurizing process thereof |
-
2014
- 2014-11-06 CN CN201420659381.XU patent/CN204275727U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944481A (en) * | 2016-06-16 | 2016-09-21 | 东北电力大学 | Demister |
| CN105944481B (en) * | 2016-06-16 | 2019-04-16 | 东北电力大学 | A kind of demister |
| CN106890535A (en) * | 2017-04-27 | 2017-06-27 | 北京纽堡科技有限公司 | Chromium mist purifier and chromium mist cleaning system |
| CN110124503A (en) * | 2019-04-30 | 2019-08-16 | 上海安赐环保科技股份有限公司 | A kind of flue gas demisting dedusting disappears white device and technique |
| CN110124503B (en) * | 2019-04-30 | 2021-10-22 | 上海安赐环保科技股份有限公司 | Flue gas demisting, dedusting and whitening device and process |
| CN114797467A (en) * | 2022-04-25 | 2022-07-29 | 南通中船机械制造有限公司 | Desulfurizing tower for ship tail gas and desulfurizing process thereof |
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Address after: 201204 Shanghai City, Pudong New Area Road No. 1151 in Lianxi green science and Technology Park 4 Building 2 layer Patentee after: SHANGHAI LANKE PETROCHEMICAL ENGINEERING & TECHNOLOGY CO., LTD. Address before: 201204 Shanghai City, Pudong New Area Road No. 1151 in Lianxi green science and Technology Park 4 Building 2 layer Patentee before: Shanghai Landke Petrochemical Engineering Technology Co., Ltd. |