CN103768938A - Ammonia-flue gas uniformly mixing device - Google Patents
Ammonia-flue gas uniformly mixing device Download PDFInfo
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- CN103768938A CN103768938A CN201310649014.1A CN201310649014A CN103768938A CN 103768938 A CN103768938 A CN 103768938A CN 201310649014 A CN201310649014 A CN 201310649014A CN 103768938 A CN103768938 A CN 103768938A
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- flue gas
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Abstract
The invention relates to the technical field of flue gas purification, and particularly relates to an ammonia-flue gas uniformly mixing device. The ammonia-flue gas uniformly mixing device comprises at least one group of static mixers installed in a flue; each group of static mixers consists of four mixer units; each mixer unit consists of two crossed mixing plate blades which form an included angle of 30 degrees-60 degrees relative to the flowing direction of flue gas. When the flue gas passes each group of static mixers, besides the partial eddy formed by each mixing plate blade, four adjacent mixing plate blades in the center form anticlockwise (or clockwise) eddy flow, and four mixing plate blades at the outer periphery generate opposite eddy flow at the opposite direction, so that double eddy flows at different directions are formed at the flow direction of flue gas; the double eddy flows at opposite directions are mixed fiercely, the mixing process is intensified, so that ammonia is distributed uniformly; meanwhile, the distance required for the aim of ammonia uniformity is shortened; the denitrification efficiency is improved; the caused pressure drop is small, and the energy utilization ratio is high.
Description
Technical field
The present invention relates to flue gases purification field, be specifically related to the equal mixing device of a kind of ammonia-flue gas.
Background technology
Along with becoming increasingly conspicuous of environmental problem, nitrogen oxide has become one of China's air pollution emission major control target.SCR technology (SCR), because of technical maturity, reliable, denitration efficiency advantages of higher, becomes the first-selection of gas denitrifying technology.SCR technology is that reducing agent ammonia is sent in flue by defeated ammonia pipe, mix with the flue gas in flue, then under the effect of catalyst, reducing agent ammine selective with flue gas in NO
xreact, by NO
xbe reduced into N
2, generate H simultaneously
2o.Existing SCR flue gas denitrification system, flue is arranged very compact, cause occurring that flue gas stream skewness, flue gas mix unequal phenomenon with ammonia, had a strong impact on denitration efficiency, the distribution of beds pre reduction agent ammonia is the key factor that affects denitration efficiency, the escaping of ammonia.Outstanding equal mixing device can effectively shorten the distance of mixing of ammonia and flue gas, reduces the nozzle quantity of ammonia-spraying grid, and ammonia can better be mixed with air.Being uniformly distributed of ammonia both can improve denitration efficiency, again can extending catalyst replacement period, reduce amount of ammonia slip, and alleviate the Corrosion blockage of air preheater, reduce investment and operational management cost.Therefore the equal mixing device design of ammonia and flue gas is to affect the equally distributed key factor of ammonia, becomes the key of SCR flue gas denitrification system technological design.
The Chinese patent that Granted publication number is CN103007701A discloses the petal-shaped ammonia-spraying grid that a kind of local eddy currents and integral cyclone combine, comprise female pipe and the arm by the 4-8 root of drawing on female pipe, on every arm, be furnished with a nozzle, disk of arranged beneath of each nozzle, the flow direction of disk and flue gas is 45 ° ~ 60 ° layouts, and each disk is all not identical with the angle of flue gas flow direction, each disk spatially forms clockwise or is rotated counterclockwise.Concerning every group of petal-shaped ammonia-spraying grid, flue gas forms district of local decompression in flowing through disk at disk back, disk makes incoming flow flue gas form rotation simultaneously, this local eddy currents and integral cyclone effect have aggravated mixing of ammonia/air Mixture and flue gas greatly, can effectively shorten ammonia and are evenly diffused into the distance in flue gas.But this blender must be used in conjunction with its design ammonia-spraying grid and quantity is more, mixer design is comparatively complicated.
Publication number is that the Chinese patent of CN102389727A discloses the equal mixing device of a kind of SCR denitration quadrangle tangential circle formula ammonia-flue gas, comprise ammonia-spraying grid and one group of above static mixer, described ammonia-spraying grid comprises the cylindrical spout of arranging by matrix, and described static mixer comprises more than two pairs static mixing plate; The smooth surface deflector that the built-in n piece of described nozzle is made up of four edges; The reference edge of all static mixing plates is in the same plane, and all static mixing plates equate with the angle of this plane, and the reference end points of all static mixing plates coincides with a bit, and the reference edge of two paired static mixing plates is located along the same line.Can make ammonia-flue gas after the disturbance of static mixer, in compared with short distance, form the mixed effect of quadrangle tangential circle formula.Because this blender blade size is relatively large, flow field, downstream is produced to larger disturbance.
Authorize the Chinese patent that publication number is CN201200864Y to disclose a kind of SCR denitrating system X-shaped static mixer, it is characterized in that, described SCR denitrating system X-shaped static mixer is rearranged by single blender plate, single blender plate is X-shaped plate, four jiaos is circle or regular polygon, below upper and side is elliptic arc or arbitrary curve, on plate face, open two through holes, adopt 3 ~ 20 blender plates to be arranged as one group, composition static mixer, this static mixer is in tilted layout at flue center, is fixed on ammonia-spraying grid top.This static mixer is owing to adopting larger blender device plate, and blender plate is all tilted to same direction, makes flow field, blender downstream inhomogeneous, makes flue gas still larger in the velocity deviation at SCR reactor inlet place.
Summary of the invention
The invention provides the equal mixing device of a kind of ammonia-flue gas, there is simple in structure, strengthening mixed process, can strengthen the being uniformly distributed property of flue gas ammonia, improve denitration efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
The equal mixing device of a kind of ammonia-flue gas, comprise at least one group of static mixer being arranged in flue, every group of static mixer is made up of 4 mixer units, and each mixer unit is made up of the mixed plate blade of two intersections, and mixed plate blade becomes 30 ° ~ 60 ° angles with flue gas flow direction.4 adjacent mixed plate blades of Shang Yi center, every group of static mixer space become counterclockwise (or clockwise) to arrange, 4 peripheral mixed plate blades spatially form clockwise the arrangement form of (or counterclockwise).Flue gas is when through every group of static mixer, except the local eddy currents that each mixed plate blade forms, 4 adjacent mixed plate blades of center form counterclockwise (or clockwise) eddy flow whirlpool, 4 peripheral mixed plate blades produce rightabout eddy flow whirlpool, thereby on flue gas flow direction, form the double vortex flow of opposite direction; Inverse double-rotation eddy current mixes strong, has strengthened mixed process, and ammonia is uniformly distributed, and has shortened simultaneously and has reached ammonia homogenising target required separation distance, has improved denitration efficiency; The pressure drop causing is less, and energy utilization efficiency is high.The group number of static mixer can be 1,1.5,2,2.5,3,3.5,4,4.5 and 5, and more than 5.
As preferably, the mixed plate blade pass of described mixer unit is crossed support bar and is fixed in flue, and the two ends of support bar are fixed on flue sidewall, fix two mixer units on every support bar.Described mixer unit is fixed in flue by support bar, and to improve stability, support bar can be carbon steel pipe, carbon steel rod, stainless steel tube or stainless steel bar etc.
As preferably, 4 mixer unit circular array of every group of static mixer distribute.Further preferred version is, every mixed plate blade equates with the angle of flow of flue gas direction.
As preferably, the coverage rate of described static mixer is 20%～60%.The number of described static mixer group number arranges according to flue size, and in the time that flue size length-width ratio is larger, now, mixed plate blade area is larger, needs the blender group of arranging to count negligible amounts.Otherwise in flue size length-width ratio hour, mixed plate blade area is relatively little, therefore needs corresponding increase static mixing group number.Need in actual applications, according to flue Sizes, static device group number is set, for making reducing agent ammonia and flue gas reach desirable mixed effect, thereby the flue gas and the ammonia that make to enter before SCR reactor obtain higher uniformity, cost-saving as far as possible again, need rationally to control the coverage rate of static mixer, preferably, the coverage rate of described static mixer is 20%～60%, more preferably, the coverage rate of described static mixer is 30% ~ 40%, described static mixer group number is 1 ~ 5, the coverage rate of described static mixer refers to that static mixer accounts for the percentage of flue cross-sectional area at the planimetric area of flue cross section.
As preferably, described mixed plate blade is rectangle, semicircle, trapezoidal, half elliptic or polygon.Easy for installation with processing in order to strengthen mixed effect, described mixed plate blade generally adopts rectangle, also can adopt according to actual needs other shapes such as trapezoidal, oval.
As preferably, described static mixer is arranged on 1m ~ 3m place, ammonia-spraying grid top of SCR denitrating system.In actual mechanical process, should, according to flue size, ammonia-spraying grid nozzle quantity etc., calculate equal mixing device optimum by CFD and be installed on Hmm place, ammonia-spraying grid top.
When the equal mixing device of ammonia-flue gas of the present invention moves in SCR flue gas denitrification system, ammonia and flue gas are in the time of each group static mixer, except each mixed plate blade produces local eddy currents, the more important thing is that spatially the adjacent 4 mixed plate blades in center produce counterclockwise (or clockwise) the strong eddy flow of direction whirlpool, peripheral 4 blocks of ammonia and the flue gases that mix version blade of flowing through produce clockwise (or counterclockwise) direction eddy flow whirlpool, like this under the strong immixture in two reverse eddy flow whirlpools, ammonia just can mix in shorter distance with flue gas, improve denitration efficiency, and due to mixed plate blade lean direction difference, therefore can obviously reduce the inhomogeneities in flow field at SCR reactor inlet, reduce flow field perturbation.Compared with prior art, the present invention has the following advantages:
(1) simple in structure, processing, easy for installation;
(2) can form strong inverse double-rotation stream whirlpool, strengthen mixed process, ammonia is uniformly distributed, improve denitration efficiency;
(3) wide accommodation, can mate use with common all kinds of ammonia-spraying grids.
(4) shortened and reached ammonia homogenising target required separation distance;
(5) pressure drop causing is less, and energy utilization efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
Fig. 3 is the main TV structure schematic diagram of Fig. 1;
Fig. 4 is embodiment of the present invention downstream different distance velocity contour;
Fig. 5 is embodiment of the present invention first floor catalyst inlet ammonia concentration profile;
Fig. 6 is two groups of static mixer structure schematic diagrames of the present invention;
Fig. 7 is the top view of Fig. 6;
Wherein, the outline line that the housing line in Fig. 1,2,3,6,7 is flue;
In figure: 1, static mixer, 2, support bar, 3, mixer unit, 4, mixed plate blade, 5, spray ammonia arm, 6, flue, 7, the female pipe of spray ammonia.
The specific embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.Should be appreciated that enforcement of the present invention is not limited to the following examples, any pro forma accommodation that the present invention is made and/or change all will fall into protection domain of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, for the equal mixing device of ammonia-flue gas (hereinafter to be referred as equal mixing device) of certain SCR of thermal power plant flue gas denitrification system, comprise 3.5 groups of static mixers 1, every group of static mixer is made up of 4 mixer units 3, and each mixer unit is made up of the mixed plate blade 4 of two intersections.The mixed plate blade 4 of mixer unit is fixed in flue 6 by support bar 2, and the two ends of support bar are fixed on flue sidewall, fixes two mixer units on every support bar.In Fig. 1, all the below of mixing device is the ammonia-spraying grid of SCR flue gas denitrification system, and ammonia-spraying grid is combined by the female pipe 7 of spray ammonia that sprays ammonia arm 5 and be connected with spray ammonia arm.The coverage rate of static mixer 1 on air flue horizontal cross section is 31.1%, mixed plate blade 4 arranged crosswise of the rectangle that mixer unit 3 is 2:1 by 2 length-width ratios form, and mixed plate blade and flue gas flow direction angle at 45 °, static mixer 1 is arranged in the 1.5m place, ammonia-spraying grid top of SCR flue gas denitrification system.
All 4 mixer unit circular array of every group of static mixer of mixing device distribute, being each mixed plate blade 4 spatially obtains the position of the mixed plate blade adjacent with this mixed plate blade, two groups of static mixer structure schematic diagrames as shown in Figure 6 and Figure 7 after half-twist with the center of static mixer.Every mixed plate blade equates with the angle of flow of flue gas direction.
Apply the SCR flue gas denitrification system of above-mentioned static mixer 1, flue gas flows into flue from flue entrance from bottom to top along the direction of arrow shown in Fig. 1, under deflector effect in SCR flue gas denitrification system, flue gas flow velocity in flue cross section, equal mixing device upstream is even.Smoke gas flow is in the time of every group of static mixer, downstream at static mixer forms inverse double-rotation stream whirlpool (Fig. 4 is blender downstream different distance velocity contour), the strong lateral velocity of eddy current impels ammonia evenly to mix with flue gas, and then discharges from exhanst gas outlet after deflector, flow straightening grid, catalyst layer.Numerical computations shows, ammonia-spraying grid upstream speed is 15.5m/s, first floor catalyst layer entrance relative velocity deviation Cv=6.9%, the relative concentration deviation sexual deviation that mixes of flue gas (ammonia with) Cv=2.0%(is as Fig. 5), static mixer resistance is 60Pa.Relative standard deviation computational methods are as follows:
Wherein:
，
Equal mixing device in the present invention is applied in the SCR of another thermal power plant flue gas denitrification system, comprises 3 groups of static mixers, every group of static mixer comprises 4 static mixer unit, and each static mixer unit comprises 2 mixed plate blade compositions.The fixed form of mixed plate blade is identical with the fixed form of embodiment 1.Due to ammonia in this SCR system and flue gas to mix distance shorter, therefore the coverage rate of the static mixer that adopted on air flue horizontal cross section is higher, reach 59.6%, the rectangle mixed plate blade arranged crosswise that mixer unit is 1.5:1 by length-width ratio forms, and mixed plate blade becomes 60 ° of angles with flue gas flow direction, this equal mixing device is arranged in the 3.0 m places, ammonia-spraying grid top of SCR flue gas denitrification system.
Draw by modeling numerical simulation calculation, at first floor catalyst layer entrance relative velocity deviation Cv=7.3%, relative concentration deviation Cv=3.1%, static mixer pressure is reduced to 135Pa, has met the designing requirement of SCR systematic function completely.
In the SCR of another thermal power plant flue gas denitrification system, adopt this equal mixing device, 2.5 groups of static mixers are comprised, every group of static mixer is made up of 4 static mixers equally, the mixed plate blade arranged crosswise that each static mixer unit is 2.4:1 by two length-width ratios forms, and mixed plate blade becomes 30 ° of angles with flue gas flow direction, its mounting means is roughly the same fixed in flue with embodiment 1 and embodiment 2.The coverage rate of this static mixer on air flue horizontal cross section is 21.2%, and blender cloth is setting in the 2.0m place, ammonia-spraying grid top of SCR flue gas denitrification system.
By being obtained to result, this SCR flue gas denitrification system modeling analog computation can find out, although the coverage rate of this static mixer is lower, blade dimensions is relatively little, but the relative concentration deviation at first floor catalyst inlet still reaches 3.5%, velocity deviation is 5.6%, static mixer pressure drop is 36Pa, has reached desired design target completely.
By the presentation of results of above-described embodiment, the inverse double-rotation of SCR denitrating system of the present invention flows ammonia-flue gas mixing arrangement wide accommodation and can effectively improve the mixing uniformity of ammonia and flue gas, in lower drag pressure drop situation, improve the denitration efficiency of SCR system, and can effectively reduce the escaping of ammonia rate.
Described mixed plate blade is rectangle, semicircle, trapezoidal, half elliptic or polygon.Above-described embodiment is three kinds of schemes preferably of the present invention, not the present invention is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (7)
1. the equal mixing device of ammonia-flue gas, it is characterized in that: comprise at least one group of static mixer being arranged in flue, every group of static mixer is made up of 4 mixer units, each mixer unit is made up of the mixed plate blade of two intersections, and mixed plate blade becomes 30 ° ~ 60 ° angles with flue gas flow direction.
2. the equal mixing device of ammonia-flue gas according to claim 1, it is characterized in that: the mixed plate blade pass of described mixer unit is crossed support bar and is fixed in flue, the two ends of support bar are fixed on flue sidewall, fix two mixer units on every support bar.
3. the equal mixing device of ammonia-flue gas according to claim 1 and 2, is characterized in that: 4 mixer unit circular array of every group of static mixer distribute.
4. the equal mixing device of ammonia-flue gas according to claim 1 and 2, is characterized in that: the coverage rate of described static mixer is 20%～60%.
5. the equal mixing device of ammonia-flue gas according to claim 3, is characterized in that: the coverage rate of described static mixer is 20%～60%.
6. the equal mixing device of ammonia-flue gas according to claim 1, is characterized in that: described mixed plate blade is rectangle, semicircle, trapezoidal, half elliptic or polygon.
7. the equal mixing device of ammonia-flue gas according to claim 1, is characterized in that: described static mixer is arranged on 1m ~ 3m place, ammonia-spraying grid top of SCR denitrating system.
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| CN105464763A (en) * | 2015-11-19 | 2016-04-06 | 浙江大学 | Urea powerful mixing device for SCR system of small and medium-sized ship |
| CN105797583A (en) * | 2016-03-18 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Efficient denitration device with low ammonia escape |
| CN107715671A (en) * | 2017-09-25 | 2018-02-23 | 江苏河海新能源股份有限公司 | Hydrogen sulphide removal unit |
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| CN107875847B (en) * | 2017-12-13 | 2023-12-29 | 山西大学 | Ammonia nitrogen mixing device for thermal power boiler ammonia spraying system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141041A (en) * | 1995-11-15 | 1997-06-03 | Kankyo Technos Kk | Gas-liquid mixer |
| CN102112192A (en) * | 2008-07-30 | 2011-06-29 | 苏舍化学技术有限公司 | Method and system for phase inversion using a static mixer/ coalescer |
| CN201949798U (en) * | 2011-03-01 | 2011-08-31 | 南京龙源环保有限公司 | Flue gas mixing device in front of selective catalytic reduction (SCR) inlet in selective non-catalytic reduction/selective catalytic reduction (SNCR/SCR) combined denitration system |
| CN202237835U (en) * | 2011-07-21 | 2012-05-30 | 邹慧明 | Static mixer |
| CN102626585A (en) * | 2012-04-16 | 2012-08-08 | 浙江大学 | V-type ammonia spraying and mixing system for SCR (Selective Catalytic Reduction) smoke denitrification device |
| CN203018000U (en) * | 2012-12-19 | 2013-06-26 | 新疆中核天山铀业有限公司 | Static gas-liquid mixer |
-
2013
- 2013-12-05 CN CN201310649014.1A patent/CN103768938B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141041A (en) * | 1995-11-15 | 1997-06-03 | Kankyo Technos Kk | Gas-liquid mixer |
| CN102112192A (en) * | 2008-07-30 | 2011-06-29 | 苏舍化学技术有限公司 | Method and system for phase inversion using a static mixer/ coalescer |
| CN201949798U (en) * | 2011-03-01 | 2011-08-31 | 南京龙源环保有限公司 | Flue gas mixing device in front of selective catalytic reduction (SCR) inlet in selective non-catalytic reduction/selective catalytic reduction (SNCR/SCR) combined denitration system |
| CN202237835U (en) * | 2011-07-21 | 2012-05-30 | 邹慧明 | Static mixer |
| CN102626585A (en) * | 2012-04-16 | 2012-08-08 | 浙江大学 | V-type ammonia spraying and mixing system for SCR (Selective Catalytic Reduction) smoke denitrification device |
| CN203018000U (en) * | 2012-12-19 | 2013-06-26 | 新疆中核天山铀业有限公司 | Static gas-liquid mixer |
Cited By (14)
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| CN105464763B (en) * | 2015-11-19 | 2018-01-26 | 浙江大学 | A kind of potent mixing arrangement of urea for medium and small-scale vessel SCR system |
| CN105464763A (en) * | 2015-11-19 | 2016-04-06 | 浙江大学 | Urea powerful mixing device for SCR system of small and medium-sized ship |
| CN105797583A (en) * | 2016-03-18 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Efficient denitration device with low ammonia escape |
| CN109070026A (en) * | 2016-05-02 | 2018-12-21 | 卡特彼勒公司 | Mixer for exhaust after treatment system |
| CN109070026B (en) * | 2016-05-02 | 2021-06-11 | 卡特彼勒公司 | Mixer for an exhaust gas aftertreatment system |
| CN107715671B (en) * | 2017-09-25 | 2020-11-17 | 江苏河海新能源股份有限公司 | Hydrogen sulfide removing device |
| CN107715671A (en) * | 2017-09-25 | 2018-02-23 | 江苏河海新能源股份有限公司 | Hydrogen sulphide removal unit |
| CN107875847B (en) * | 2017-12-13 | 2023-12-29 | 山西大学 | Ammonia nitrogen mixing device for thermal power boiler ammonia spraying system |
| CN109482063A (en) * | 2018-11-15 | 2019-03-19 | 安徽威达环保科技股份有限公司 | A kind of sintering device flue gas SCR denitration concurrent heating and ammonia spray conglomerate integration device and technique |
| CN109289514B (en) * | 2018-11-28 | 2023-11-17 | 长沙凯天工研院环保服务有限公司 | SCR denitration flue gas blender and system thereof |
| CN109289514A (en) * | 2018-11-28 | 2019-02-01 | 长沙凯天工研院环保服务有限公司 | A kind of SCR denitration flue gas mixer and its system |
| CN110469864A (en) * | 2019-08-08 | 2019-11-19 | 湖南大唐节能科技有限公司 | A kind of SCR subregion spray ammonia optimal control method of the preposition static mixer of band |
| CN110975656A (en) * | 2019-12-09 | 2020-04-10 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Flue gas cyclone mixing device of SCR (Selective catalytic reduction) denitration system |
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