CN206535419U - A kind of high-efficiency desulfurization absorption tower spray equipment - Google Patents
A kind of high-efficiency desulfurization absorption tower spray equipment Download PDFInfo
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- CN206535419U CN206535419U CN201621493385.0U CN201621493385U CN206535419U CN 206535419 U CN206535419 U CN 206535419U CN 201621493385 U CN201621493385 U CN 201621493385U CN 206535419 U CN206535419 U CN 206535419U
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Abstract
The utility model discloses a kind of equipment of air prevention and control field, a kind of spray system of desulfurization absorption tower is specifically referred to.The interposition of spraying layer in the utility model is equipped with a spraying layer main pipe, and spray branch pipe is arranged symmetrically in the both sides of spraying layer main pipe, and the nozzle being distributed on spray branch pipe has unidirectional single spraying nozzle and unidirectional double spraying nozzle mix and match；It is unidirectional single spraying type nozzle to absorb the tower wall nozzle of nearest one week in distance, and is installed with tower wall angle at 45 °；The unidirectional pair of spray type nozzle quantity on each spraying layer is less than unidirectional single spraying type nozzle quantity.The utility model has the advantages that local liquid-gas ratio in balanced absorption tower can be realized, each region smoke desulfurization efficiency in tower is improved, so as to increase desulphurization system stability, assists to improve the desulfurization dust-removing efficiency on absorption tower, reaches minimum discharge requirement.
Description
Technical field
The utility model is related to a kind of equipment in air minimum discharge prevention and cure of pollution field, specifically refers to a kind of available for fire
The spray system of desulfurization absorption tower of chemical plant, cement plant, the steel mill of power plant and the similar atmosphere pollution of discharge etc..
Background technology
As haze weather etc. is increasingly severe, environmental issue is also increasingly by country's attention.According to Environmental Protection Department,
National Development and Reform Committee, National Energy Board combine what is issued《On printing and distributing<Implement in full coal-burning power plant's minimum discharge and reducing energy consumption work
Make scheme>Notice》(ring sends out [2015] No. 164) regulation, thermal power plant will complete environmentally friendly minimum discharge before the end of the year 2018 and changed
Make work, it is desirable under the conditions of benchmark oxygen content 6%, flue dust, sulfur dioxide, discharged nitrous oxides concentration are respectively no higher than
10mg/m3、35mg/m3、50mg/m3.Many thermal power plant environmental protection equipment device disposal ability presence can not meet newest row
Put the devices such as the possibility of standard, particularly desulfuration absorbing tower.
Spraying layer nozzle above conventional absorption tower is typically using the average arrangement form of single spraying shower nozzle.
Because the exhaust gas volumn difference by absorption tower cross-sectional unit area is very big, and the spraying layer unit of this arrangement form
The nozzle quantity of area is the same, and single-nozzle area coverage has limitation again, the local liquid-gas ratio deviation in absorption tower can be caused big, respectively
Region smoke desulfurization efficiency has relatively large deviation, absorption tower is exported sulfur dioxide and does not reach minimum discharge standard.
At present, fire coal boiler fume purification is most commonly used that Limestone-gypsum Wet Flue Gas Desulfurization Process technique, in its technological process
Absorption plant uses spray column mostly.The chemical reaction of acid-base neutralization, gas occur between the gas-liquid two-phase contacted with each other in spray column
SO in phase2The sulfide in liquid phase is converted into, the MODEL OF CHEMICAL ABSORPTION PROCESS carried out between being gas-liquid two-phase from chemical process analysis.Together
When, the solia particle suspended in the gas phase meets with absorbent drop and is wet and enters drop.Spraying layer be in absorption tower most
One of part for core, the reasonable design of spraying layer plays vital work to the overall performance of wet method fume desulfurizing system
With.
So, above-mentioned various problems will directly affect the production cost of enterprise, the realistic problem such as scrap build cost.How
Equipment cost, operating cost are reduced, while can realize that preferable effect is the key that pendulum needs to solve in face of enterprise.
Utility model content
The utility model proposes carrying out differentiation transformation to former absorption tower spraying layer to arrange, spraying layer shape invariance is kept,
According to flue gas flow field distribution situation in tower, targetedly shift or increase some nozzles, while by original common unidirectional single spraying
Nozzle is changed to the double spray hollow cone nozzles of high-efficient single direction, increases the area coverage of single-nozzle, certainly, the change of this nozzle quantity
It is not simple replace.Due to more in tower inner nozzle quantity, if just drawing corresponding technical side by examination of repaying many times
Case, can not also be realized in economic effect.So the technical foundation that the application solves this problem is by fluid in tower
Dynamic situation is analyzed, and to determine distribution situation the characteristics of different spray nozzles, is desirably to obtain good effect.
Determine three key factors of spraying layer purification efficiency：
Spraying granule size：Current common type is two kinds of hollow cone and solid-cone, and spraying granule size and pressure are into anti-
Than, be directly proportional to nozzle angle, be inversely proportional with flow.The particle diameter of unidirectional double spraying nozzles is smaller than the particle diameter of unidirectional single spraying nozzle,
1700um is ordinarily be about, gas-liquid contact reaction is more beneficial for, but cost is 8-10 times of unidirectional single spraying.
By taking 90 ° of nozzles as an example, the area coverage A of single-nozzle0=3.14 × (1 × tg (90 °/2)2=3.14m2Spraying layer
Coverage rate：
Spraying layer coverage rate is effective covering gross area of individual layer spraying layer nozzle and the ratio of absorption tower sectional area.Spray
When layer coverage rate is not high enough, gas-liquid can be caused not contact fully, trapping ability of the reduction drop to gas.But spraying layer covers
Lid rate because the overlapping covering of spray area can make droplet produce cohesion and broken because of collision, and is condensed nor the higher the better
The probability of generation be more than it is broken, main reason is that the drop sprayed from nozzle is due to by gravity and rising flue gas resistance and acted on
Downward retarded motion is gradually formed, the crushing effect bumped against between uniform motion, drop is remake weaker.The covering of obvious multilayer makes
Cohesion between drop is easier to occur, and cohesion increases liquid-drop diameter, and liquid phase surface area is reduced, and this is unfavorable for purification efficiency.
Spray coverage rate is normally controlled in 300%.
Effective spray height：
Effective spray height refers to receive tower gas approach center line to the distance of the superiors' spraying layer center line.Flue gas enters
Bias current can be produced during absorption tower, low speed rotation nest is often formed on absorption tower gas approach top, flue gas flow field is more low more uneven,
Therefore effectively spray height is higher, and flow field uniformity is relatively high, and gas-liquid contact is relatively uniform.
The utility model solve scheme be：Former spraying layer shape invariance is kept, according to flue gas flow field distribution situation in tower,
Targetedly shift or increase some nozzles, while original common unidirectional single spraying nozzle is changed into the double spray hollow cones of high-efficient single direction
Nozzle, increases the area coverage of single-nozzle.Make local liquid-gas ratio in absorption tower balanced, while it is original not to improve each region in tower
Smoke desulfurization efficiency, so as to increase desulphurization system stability, assists to improve the desulfurization dust-removing efficiency on absorption tower, reaches in a balanced way
Minimum discharge requirement.The utility model is achieved by following technical proposals：
A kind of high-efficiency desulfurization absorption tower spray equipment, including tower wall, spraying layer branch pipe, nozzle, absorption tower gas approach, branch
Support beam, it is characterised in that：The interposition of spraying layer is equipped with a spraying layer main pipe, and spray is arranged symmetrically in the both sides of spraying layer main pipe
Branch pipe, the nozzle being distributed on spray branch pipe has unidirectional single spraying nozzle and unidirectional double spraying nozzle mix and match；Apart from absorption tower
The wall nozzle of nearest one week is unidirectional single spraying type nozzle, and is installed with tower wall angle at 45 °；The unidirectional pair of spray type on each spraying layer
Nozzle quantity is less than unidirectional single spraying type nozzle quantity.
Preferably, the nozzle in a kind of above-mentioned high-efficiency desulfurization absorption tower spray equipment close to the spray side position of beam two is single
To single spraying type nozzle.
Preferably, the spacing in a kind of above-mentioned high-efficiency desulfurization absorption tower spray equipment between nozzle is 400mm-800mm
Between, make the coverage rate 250%-300% of flue gas low regime spraying layer, the coverage rate 300%- of flue gas high velocity spraying layer
350%；
Preferably, unidirectional single spraying type nozzle solid-cone pattern spray in a kind of above-mentioned high-efficiency desulfurization absorption tower spray equipment
Mouth, effective spray height must not be less than 2.5m.
Preferably, being also equipped with flow velocity control on unidirectional single spraying type nozzle in a kind of above-mentioned high-efficiency desulfurization absorption tower spray equipment
Device processed, and the spacing of the unidirectional single spraying type nozzle of outermost layer and tower wall is 500mm.
Preferably, the nozzle in a kind of above-mentioned high-efficiency desulfurization absorption tower spray equipment above the gas approach of absorption tower is single
To single spraying type nozzle and unidirectional double spray type nozzle mixed-arrangements.
Spraying layer branch pipe
According to flue gas flow field distribution situation in tower, spraying layer branch length of tube is targetedly adjusted, in favor of high efficiency nozzle
Arrangement.
The double spraying nozzles of high-efficient single direction
High efficiency spray layer sets the sufficient nozzle of quantity, sufficient nozzle using the double spraying nozzles of high-efficient single direction by every layer
Spray coverage rate is ensure that, while nozzle atomization effect more preferably, 100% removal efficiency can be realized to more than particle diameter PM5 dust.
Apparatus above acts synergistically, it is possible to achieve local liquid-gas ratio in balanced absorption tower, improves each region flue gas in tower and takes off
Sulphur efficiency, so as to increase desulphurization system stability, assists to improve the desulfurization dust-removing efficiency on absorption tower, reaches minimum discharge requirement.
The arrangement of unidirectional single spraying type nozzle 3 and unidirectional double spray type nozzles 4 especially in the application, should consider equipment each part whether
It can be impacted, it is also contemplated that actual spraying effect, so the design such as arrangement therein and structure direction is all technical staff
The result drawn on the basis of fluid test is carried out.
The beneficial effects of the utility model are：
1st, local liquid-gas ratio in balanced absorption tower can be realized, each region smoke desulfurization efficiency in tower is improved, so as to increase
Desulphurization system stability, assists to improve the desulfurization dust-removing efficiency on absorption tower, reaches minimum discharge requirement.
2nd, it is simple with transformation based on built wet method fume desulfurizing system, the advantages of investing small.The utility model can be assisted
The desulfurization dust-removing efficiency for improving absorption tower is helped, the requirement of minimum discharge is reached.
Brief description of the drawings
Fig. 1 cross-sectional structure schematic diagrames of the present utility model
Fig. 2 side structure schematic diagrams of the present utility model
Embodiment
Below in conjunction with the accompanying drawings, implementation of the present utility model is illustrated：
Embodiment 1
With reference to the accompanying drawings 1, structure shown in Fig. 2, designs and produces a kind of high-efficiency desulfurization absorption tower spray equipment, and certain power plant desulfurization surpasses
Low emission transformation project, according to the utility model mentality of designing, imports and exports to absorption tower and tower inner section carries out concentration point first
Cloth, flow-field test, then calculated according to test result, spraying layer nozzle quantity is redefined, while according to test result pair
The distribution of nozzle carries out rearrangement.Displacement or the length of adjustment spraying layer branch pipe 1, and by former spraying layer nozzle with being changed to efficient list
To double spraying nozzles 2.Including tower wall 1, spraying layer branch pipe 2, nozzle, absorption tower gas approach 7, support beam, wherein in spraying layer
Meta is equipped with a spraying layer main pipe 6, and spray branch pipe 2 is arranged symmetrically in the both sides of spraying layer main pipe 6, is distributed on spray branch pipe 2
Nozzle have unidirectional single spraying nozzle 3 and the unidirectional double mix and match of spraying nozzle 4；It is being unidirectional apart from the tower wall nozzle of 1 nearest one week
Single spraying type nozzle 3, and installed with the angle at 45 ° of tower wall 1；The unidirectional pair of quantity of spray type nozzle 4 on each spraying layer is single less than unidirectional
The quantity of spray type nozzle 3.It is unidirectional single spraying type nozzle 3 close to the nozzle of spray 5 liang of side positions of beam.
By calculating, displacement or the distribution of increase and decrease spraying layer nozzle and sulfur dioxide in flue gas concentration distribution and flue gas flow rate
Match, increase in center and replace some nozzles, shift while coordinating and change some nozzles, make nozzle on spraying layer
Be distributed as heterogeneity arrangement, the quantity in spraying layer middle part is more than peripheral.Nozzle shift or increase and decrease position for pair
Claim arrangement, reduce processing and difficulty of construction.While in order to prevent that construction from being caused to absorb tower wall and spraying layer beam anti-corrosion is washed
Destruction, after accuracy computation, absorption tower wall and spraying layer beam are retained as far as possible, and nearby nozzle is constant.So both reducing construction
Difficulty improves desulfuration efficiency while saving improvement cost expense, and lime stone slurry is reached maximum service efficiency, it is to avoid
Waste.
By the operation of one month, above utility model device synergy was final to realize local liquid in balanced absorption tower
Gas ratio, improves each region smoke desulfurization efficiency in tower, so as to increase desulphurization system stability, assists the desulfurization for improving absorption tower to remove
Dirt efficiency, reaches minimum discharge requirement.
Embodiment 2
On the basis of embodiment 1, control the spacing between nozzle between 400mm, to make flue gas low regime spraying layer
Coverage rate 280%, the coverage rate 330% of flue gas high velocity spraying layer；And the unidirectional solid-cone pattern nozzle of single spraying type nozzle 3, have
Effect spray height must not be less than 2.5m.
By factory's actual test, effect also clearly, obtains the target being pre-designed.
Embodiment 3
On the basis of embodiment 1, current velocity controller is also equipped with unidirectional single spraying type nozzle 3, so can conveniently be adjusted
Throttling speed, to realize the double satisfactions of economy, effect, and the spacing of the unidirectional single spraying type nozzle 3 of outermost layer and tower wall 1 is 500mm；Absorb
The nozzle of the top of tower gas approach 7 is unidirectional single spraying type nozzle 3 and unidirectional double mixed-arrangements of spray type nozzle 4.
By the experiment of above-described embodiment, the transformation in the application for existing equipment will effectively control cost, and effect
Also greatly improve, and the transformation cycle is also greatly lowered.
Claims (6)
1. a kind of high-efficiency desulfurization absorption tower spray equipment, including tower wall (1), spraying layer branch pipe (2), nozzle, absorption tower entrance cigarette
Road (7), support beam, it is characterised in that：The interposition of spraying layer is equipped with a spraying layer main pipe (6), the two of spraying layer main pipe (6)
Side is arranged symmetrically spray branch pipe (2), and the nozzle being distributed on spray branch pipe (2) has unidirectional single spraying nozzle (3) and unidirectional double spray sprays
Mouth (4) mix and match；
It is being unidirectional single spraying type nozzle (3) apart from tower wall (1) nearest one week nozzle, and is being installed with tower wall (1) angle at 45 °；
Unidirectional pair of spray type nozzle (4) quantity on each spraying layer is less than unidirectional single spraying type nozzle (3) quantity.
2. a kind of high-efficiency desulfurization absorption tower spray equipment according to claim 1, it is characterised in that close to spray beam (5)
The nozzle of two side positions is unidirectional single spraying type nozzle (3).
3. a kind of high-efficiency desulfurization absorption tower spray equipment according to claim 1, it is characterised in that the spacing between nozzle
Between 400mm-800mm, to make the coverage rate 250%-300% of flue gas low regime spraying layer, flue gas high velocity spraying layer covers
Lid rate 300%-350%.
4. a kind of high-efficiency desulfurization absorption tower spray equipment according to claim 1, it is characterised in that unidirectional single spraying type nozzle
(3) solid-cone pattern nozzle, effective spray height must not be less than 2.5m.
5. a kind of high-efficiency desulfurization absorption tower spray equipment according to claim 1, it is characterised in that unidirectional single spraying type nozzle
(3) current velocity controller is also equipped with, and the spacing of the unidirectional single spraying type nozzle (3) of outermost layer and tower wall (1) is 500mm.
6. a kind of high-efficiency desulfurization absorption tower spray equipment according to claim 1, it is characterised in that absorption tower gas approach
(7) nozzle above is unidirectional single spraying type nozzle (3) and unidirectional double spray type nozzle (4) mixed-arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493385.0U CN206535419U (en) | 2016-12-31 | 2016-12-31 | A kind of high-efficiency desulfurization absorption tower spray equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493385.0U CN206535419U (en) | 2016-12-31 | 2016-12-31 | A kind of high-efficiency desulfurization absorption tower spray equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206535419U true CN206535419U (en) | 2017-10-03 |
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ID=59940350
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621493385.0U Expired - Fee Related CN206535419U (en) | 2016-12-31 | 2016-12-31 | A kind of high-efficiency desulfurization absorption tower spray equipment |
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| CN (1) | CN206535419U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176212A (en) * | 2017-12-08 | 2018-06-19 | 浙江工业大学之江学院 | A kind of environment-protecting type exhaust air purifying column |
| CN108830024A (en) * | 2018-08-10 | 2018-11-16 | 山东电力工程咨询院有限公司 | A kind of alloy spraying layer design method and device for wet method fume desulfurizing system |
| CN109316927A (en) * | 2018-11-09 | 2019-02-12 | 中国科学院过程工程研究所 | A kind of tapering type ozone uniform device and its arrangement in flue |
-
2016
- 2016-12-31 CN CN201621493385.0U patent/CN206535419U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176212A (en) * | 2017-12-08 | 2018-06-19 | 浙江工业大学之江学院 | A kind of environment-protecting type exhaust air purifying column |
| CN108830024A (en) * | 2018-08-10 | 2018-11-16 | 山东电力工程咨询院有限公司 | A kind of alloy spraying layer design method and device for wet method fume desulfurizing system |
| CN108830024B (en) * | 2018-08-10 | 2024-03-22 | 山东电力工程咨询院有限公司 | Alloy spray layer design method and device for wet flue gas desulfurization system |
| CN109316927A (en) * | 2018-11-09 | 2019-02-12 | 中国科学院过程工程研究所 | A kind of tapering type ozone uniform device and its arrangement in flue |
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