CN202237786U - Tangent circle type spiral injection wet flue gas desulphurization device - Google Patents

Tangent circle type spiral injection wet flue gas desulphurization device Download PDF

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Publication number
CN202237786U
CN202237786U CN2011203927548U CN201120392754U CN202237786U CN 202237786 U CN202237786 U CN 202237786U CN 2011203927548 U CN2011203927548 U CN 2011203927548U CN 201120392754 U CN201120392754 U CN 201120392754U CN 202237786 U CN202237786 U CN 202237786U
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China
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circle
flue gas
contact
spiral spray
wet flue
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CN2011203927548U
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Chinese (zh)
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刘定平
徐开华
单婕
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model discloses a tangent circle type spiral injection wet flue gas desulphurization device, which comprises an absorption tower which is provided with a tangent circle type spiral injection turbulence absorption layer, a conventional spraying layer and a demisting layer orderly from bottom to top. The tangent circle type spiral injection turbulence absorption layer consists of groups of opposite tangent circle ultrasonic atomizing nozzles arranged along a circular pipeline; the conventional spraying layer consists of a plurality of mechanical nozzles in array arrangement; an efficient atomizing nozzle is arranged in the tangent circle type spiral injection turbulence absorption layer to form a tangent circle type injection turbulence absorption filed. The atomized particles which are 50-400 microns in size rise spirally to enhance the mixture uniformity of reactants, prolong the contact time, accelerate the speed of absorption reaction and improve the desulfurizing efficiency. With adoption of the flue gas desulfurizer by wet process with tangent circle type spiral injection, the liquid-gas ratio of desulfurization can be reduced, the number of the atomizing nozzles can be decreased, the volume of the desulfurizing spray tower can be reduced, and the cost of the desulfurizing system and the desulfurizing energy consumption can be lowered. The flue gas desulfurizer by wet process with tangent circle type spiral injection can be widely applied to wet flue gas desulfurization systems in industries such as electric power, petrochemical, metallurgy and cement and the like.

Description

A kind of circle of contact formula spiral spray wet flue gas desulfurizer
Technical field
The utility model relates to flue gas desulfur device, relates in particular to a kind of circle of contact formula spiral spray wet flue gas desulfurizer.
Background technology
SO 2Pollution is the subject matter of China's air environmental pollution, is the important environmental factor of the economic stable coordination development of restriction China.Along with the fast development in thermal power plant, SO 2Discharging is on the increase.And SO 2Discharging, be to cause the increasing one of the main reasons of acid rain.How the coal-burning power plant implements desulfurization project, improves sulfur removal technology, improves desulfuration efficiency, is effectively to contain SO 2The effective means of discharging.Lime/lime stone-gypsum wet flue gas desulfurizing technology is current control SO 2A kind of mature technique the most, and be employed extensively.Yet also exist the problem that desulfuration efficiency is not high, energy consumption level is high and desulphurization cost is high.
In wet desulfurizing process, its core is a desulfurizing tower.In desulfurizing tower, sulfur-containing smoke gas is absorbed, oxidation.The principal element that influences desulfuration efficiency and energy consumption is sulfur method and device.
There is more defective in the power plant smoke desulfurization by wet method poor effect at present.In order to improve the slurries utilization rate, guarantee desulfuration efficiency, on the one hand, must build volume absorption tower and need the slush pump extraction slurries utilization of spraying that repeatedly circulates greatly; On the other hand, the absorption tower spraying layer need be installed 2~4 layers of nozzle, and every layer needs more than 80 of number of nozzle.Therefore, need expenses such as the bigger equipment construction of cost, operation, maintenance, maintenance.
So in order to improve desulfuration efficiency, guarantee the efficient on absorption tower, improve and the optimization desulfurizing adsorption system.Design a cover wet flue gas desulfurizer scientifically and rationally very important meaning is arranged.
Summary of the invention
For the desulfuration efficiency and reduction desulphurization cost that improves desulphurization system, guarantee wet method fume desulfurizing system safety, stable, operation economically, the utility model provides a kind of circle of contact formula spiral spray wet flue gas desulfurizer.
The utility model is realized through following technical proposals:
A kind of circle of contact formula spiral spray wet flue gas desulfurizer comprises the absorption tower, and characteristics are to be disposed with in the absorption tower circle of contact formula spiral spray turbulent flow absorbed layer, conventional spraying layer and demist layer from bottom to top; Said circle of contact formula spiral spray turbulent flow absorbed layer constitutes (but being not limited to ultrasonic wave atomizing nozzle) by the many groups of ultrasonic wave atomizing nozzles along the circle of contact that liquidates of circular line arrangement; Said conventional spraying layer is made up of the mechanical type nozzle of several arranged in arrays; Said demist layer is a demister, and said absorption tower inner bottom part is provided with the slurries storage area.
Said by the many groups of ultrasonic wave atomizing nozzles along the circle of contact that liquidates of circular line arrangement, wherein the jet of the every group of circle of contact ultrasonic wave atomizing nozzle that liquidates forms the circle of contact of different-diameter.
Said wherein same group of ultrasonic wave atomizing nozzle downtilt angles is identical by the many groups of circle of contact ultrasonic wave atomizing nozzles that liquidate along circular line arrangement, and the angle of inclination is 5 °~15 °.
Said ultrasonic wave atomizing nozzle and mechanical type nozzle are connected with slurries storage area pipeline through slush pump respectively.
Said demist layer is connected with the clear water feedway through pipeline respectively.
Said slurries storage area is provided with agitator, oxidation fan, and said slurries storage area also is connected with the slurries replenishment system, and said slurries replenishment system comprises that slush pump, slurries are irritated, agitator.
Said demister is the multilayer demister, is provided with multidirectional high pressure washing (operating) water nozzle between every layer of demister.
The gas approach on said absorption tower is arranged on circle of contact formula spiral spray turbulent flow absorbed layer below, and the exhanst gas outlet on said absorption tower is arranged on the top or the side of end, absorption tower.
Compared with prior art, the beneficial effect of the utility model is:
1. the field of turbulent flow that produces of circle of contact formula spiral spray turbulent flow absorbed layer, the desulfurizing agent that is the screw of the different-diameter circle of contact is full of the absorption tower, eliminates the desulphurization reaction dead angle, has strengthened the reactant mixing uniformity, has accelerated the speed of absorption reaction.
2. the ultrasonic wave atomizing nozzle of circle of contact formula spiral spray turbulent flow absorbed layer adopts downward-sloping 5 °~15 ° angle to arrange, makes flue gas and desulfurizing agent fully react the time of contact of prolong smoke and desulfurizing agent, improves the efficient of desulfurization.
3. circle of contact formula spiral spray turbulent flow absorbed layer utilizes circle of contact formula to arrange that ultrasonic wave atomizing nozzle can reduce the requirement of desulfurization nozzle atomizing cone angle greatly, reduces the nozzle use amount, can correspondingly dwindle the volume of desulfurizer, practices thrift the desulfurizing tower investment.
4. circle of contact formula spiral spray turbulent flow absorbed layer adopts circle of contact formula to spray turbulent desulfurization and combines with conventional wet desulphurization, has carried out twice desulfurization of flue gas, and desulfuration efficiency height, desulfurization energy consumption and cost are low.
5. circle of contact formula spiral spray turbulent flow absorbed layer adopts ultrasonic wave atomizing nozzle, reduces the particle diameter of atomized particles greatly, has increased reactant contact gear ratio surface area, has improved desulfuration efficiency.Can reduce the slurries cycle-index, reduce the desulfurization energy consumption.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is Fig. 1 circle of contact formula spiral spray turbulent flow absorbent layer structure sketch map.
The specific embodiment
Do further detailed explanation in the face of the specific embodiment of the utility model down, but the embodiment of the utility model is not limited thereto.
As shown in Figure 1.The utility model circle of contact formula spiral spray wet flue gas desulfurizer comprises the absorption tower, in the absorption tower, is disposed with circle of contact formula spiral spray turbulent flow absorbed layer II, conventional spraying layer III and demist layer IV from bottom to top; Said circle of contact formula spiral spray turbulent flow absorbed layer II is made up of the many groups of ultrasonic wave atomizing nozzles 13 along the circle of contact that liquidates of circular line arrangement; Said conventional spraying layer III is made up of the mechanical type nozzle 2 of several arranged in arrays;
As shown in Figure 2.Said by the many groups of circle of contact ultrasonic wave atomizing nozzles 13 that liquidate along circular line arrangement, wherein the liquidate jet of circle of contact nozzle of each group forms the circle of contact of different-diameter.Said wherein same group ultrasonic wave atomizing nozzle 7 downtilt angles are identical by the many groups of circle of contact ultrasonic wave atomizing nozzles 13 that liquidate along circular line arrangement, and the angle of inclination is 5 °~15 °.
Said demist layer IV is demister, and this demister is the multilayer demister, is provided with multidirectional high pressure washing (operating) water nozzle between every layer of demister.
Said absorption tower inner bottom part is provided with slurries storage area I, and said slurries storage area I is provided with agitator 11, oxidation fan 12, and said slurries storage area I also is connected with the slurries replenishment system, and said slurries replenishment system comprises slush pump 9, slurries filling 10, agitator 7.
Said ultrasonic wave atomizing nozzle 13 and mechanical type nozzle 2 are connected with slurries storage area I pipeline through slush pump 8 respectively; Said demist layer IV is connected with the clear water feedway through pipeline 1 respectively, and this clear water feedway comprises Pressure gauge 3, control valve 4, high pressure washing pump 5, filtered water tank 6.
The gas approach 15 on absorption tower is arranged on circle of contact formula spiral spray turbulent flow absorbed layer II below, and the exhanst gas outlet 16 on said absorption tower is arranged on the top or the side of end, absorption tower.
Circle of contact formula spiral spray wet flue gas desulfurizer operation principle machine process is following:
Be stored in the slurries in the serum pot 10, be delivered among the I of slurries memory block through pipeline, under the effect of slush pump 8, be transported to circle of contact formula spiral spray turbulent flow absorbed layer II and conventional spraying layer III then by slush pump 9.Slurries by ultrasonic wave atomizing nozzle 13 ejections, produce atomized particles and contact with flue gas in circle of contact formula spiral spray turbulent flow absorbed layer II, realize the once desulfurization effect of flue gas; Slurries by common mechanical type nozzle 2 sprays, produce the droplet of greater particle size in conventional spraying layer III, contact with flue gas, realize the secondary desulfurization.
The slurries of accomplishing desulfidation descend under effects such as gravity, gather once more in the I of slurries memory block.The slurries of sedimentation with come from serum pot 10 in freshly prepd slurries under the effect of agitator 11, evenly mix, realize recycle, the intermediate reaction thing carries out oxidation reaction under the effect of oxidation fan 12.
Flue gas is got in the circle of contact formula spiral spray turbulent flow absorbed layer II by gas approach 15, evenly mixes with thinner atomized particles, accomplishes once desulfurization.Subsequently, flue gas continues to move up to conventional spraying layer III, and flue gas contacts with the bigger droplet of particle diameter in the zone of this routine spraying layer III, accomplishes the secondary desulfurization; Big droplet is caught fine particle simultaneously.Carry the part droplet through the flue gas after first and second desulfurization and continue to move up to demist layer IV, demist layer IV the zone in through demist efficiently after, flue gas is by exhanst gas outlet 16 discharge absorption towers.
Wherein, the cleansing medium of demist layer IV is provided by the filtered water tank 6 of clear water feedway, and the high pressure washing pump 5 that is provided with on the rinse water pipeline, control valve 4, Pressure gauge 3 are used for controlling the pressure and the flow of rinse water.
As shown in Figure 2; Circle of contact formula spiral spray turbulent flow absorbed layer II adopts ultrasonic wave atomizing nozzle 13; Ultrasonic wave atomizing nozzle 13 is carried out the circle of contact along circular pipeline 14 (pipeline 14 is the inwall layout along the absorption tower) arrange that the atomized particles jet that the ultrasonic wave atomizing nozzle 13 of different angles configuration ejects along the circumferential direction forms the circle of contact of different-diameter; In vertical direction, atomized particles moves downward because of inertia, and because of the effect of flue gas stream is stagnated, then atomized particles moves upward with air-flow, in the zone of this circle of contact formula spiral spray turbulent flow absorbed layer II, forms under a plurality of first screws the field of turbulent flow on the screw again.The number of plies that ultrasonic wave atomizing nozzle 13 is arranged mainly designs (Fig. 2 is arranged as example with three layers of circle of contact formula) according to the range of the ultrasonic wave atomizing nozzle 13 of the diameter on absorption tower and employing; To guarantee that whole absorption tower cross section is full of the desulfurizing agent (lime stone slurry) of atomizing particle shape, avoids occurring the desulfurization dead angle.
Just can realize this patent preferably as stated.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.

Claims (8)

1. a circle of contact formula spiral spray wet flue gas desulfurizer comprises the absorption tower, it is characterized in that being disposed with in the absorption tower circle of contact formula spiral spray turbulent flow absorbed layer, conventional spraying layer and demist layer from bottom to top; Said circle of contact formula spiral spray turbulent flow absorbed layer is made up of the many groups of ultrasonic wave atomizing nozzles along the circle of contact that liquidates of circular line arrangement; Said conventional spraying layer is made up of the mechanical type nozzle of several arranged in arrays; Said demist layer is a demister, and said absorption tower inner bottom part is provided with the slurries storage area.
2. according to the said circle of contact formula of claim 1 spiral spray wet flue gas desulfurizer; It is characterized in that saidly by the many groups of ultrasonic wave atomizing nozzles along the circle of contact that liquidates of circular line arrangement, wherein the jet of the every group of circle of contact ultrasonic wave atomizing nozzle that liquidates forms the circle of contact of different-diameter.
3. according to the said circle of contact formula of claim 2 spiral spray wet flue gas desulfurizer; It is characterized in that said by many groups of ultrasonic wave atomizing nozzles along the circle of contact that liquidates of circular line arrangement; Wherein same group of ultrasonic wave atomizing nozzle downtilt angles is identical, and the angle of inclination is 5 °~15 °.
4. according to the said circle of contact formula of claim 3 spiral spray wet flue gas desulfurizer, it is characterized in that said ultrasonic wave atomizing nozzle and mechanical type nozzle are connected with slurries storage area pipeline through slush pump respectively.
5. according to the said circle of contact formula of claim 4 spiral spray wet flue gas desulfurizer, it is characterized in that said demist layer is connected with the clear water feedway through pipeline respectively.
6. according to the said circle of contact formula of claim 5 spiral spray wet flue gas desulfurizer; It is characterized in that said slurries storage area is provided with agitator, oxidation fan; Said slurries storage area also is connected with the slurries replenishment system, and said slurries replenishment system comprises that slush pump, slurries are irritated, agitator.
7. according to the said circle of contact formula of claim 6 spiral spray wet flue gas desulfurizer, it is characterized in that said demister is the multilayer demister, is provided with multidirectional high pressure washing (operating) water nozzle between every layer of demister.
8. according to the said circle of contact formula of claim 7 spiral spray wet flue gas desulfurizer; The gas approach that it is characterized in that said absorption tower is arranged on circle of contact formula spiral spray turbulent flow absorbed layer below, and the exhanst gas outlet on said absorption tower is arranged on the top or the side of end, absorption tower.
CN2011203927548U 2011-10-14 2011-10-14 Tangent circle type spiral injection wet flue gas desulphurization device Withdrawn - After Issue CN202237786U (en)

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CN2011203927548U CN202237786U (en) 2011-10-14 2011-10-14 Tangent circle type spiral injection wet flue gas desulphurization device

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Application Number Priority Date Filing Date Title
CN2011203927548U CN202237786U (en) 2011-10-14 2011-10-14 Tangent circle type spiral injection wet flue gas desulphurization device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357335A (en) * 2011-10-14 2012-02-22 华南理工大学 Tangent circle spiral spraying wet method smoke sulfur removal device
CN105536399A (en) * 2015-12-15 2016-05-04 浙江百能科技有限公司 Flue gas purifying apparatus
CN110508124A (en) * 2019-09-29 2019-11-29 崔小勤 High-concentration industrial flue gas semidry method cleaning treatment system and its process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357335A (en) * 2011-10-14 2012-02-22 华南理工大学 Tangent circle spiral spraying wet method smoke sulfur removal device
CN105536399A (en) * 2015-12-15 2016-05-04 浙江百能科技有限公司 Flue gas purifying apparatus
CN110508124A (en) * 2019-09-29 2019-11-29 崔小勤 High-concentration industrial flue gas semidry method cleaning treatment system and its process

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120530

Effective date of abandoning: 20130724

RGAV Abandon patent right to avoid regrant