CN108579398A - A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system - Google Patents
A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system Download PDFInfo
- Publication number
- CN108579398A CN108579398A CN201810485515.3A CN201810485515A CN108579398A CN 108579398 A CN108579398 A CN 108579398A CN 201810485515 A CN201810485515 A CN 201810485515A CN 108579398 A CN108579398 A CN 108579398A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- flue
- gas
- fluidisation
- absorption tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
This application discloses a kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system, wherein method is：The flue gas that flue gas source generates is divided at least two gas circuits, one of gas circuit is fluidisation gas circuit, remaining gas circuit is to adjust gas circuit；It is passed through in absorption tower after fluidisation gas circuit is accelerated, participates in the fluidisation of desulfurizer powder, adjusted gas circuit and be passed directly into the uptake zone in absorption tower, participate in desulfurization；Exhaust gas volumn by exchanging solar term road is adjusted, and the exhaust gas volumn of fluidisation gas circuit is made to fluidize the flue gas flow rate after the acceleration of gas circuit under minimum fluidization air quantity more than or equal to minimum fluidization air quantity and reach the flow rate setpoint fluidized for desulfurizer powder.This method is either under the underload and high load capacity in flue gas source, it can ensure that flue gas desulfurization is not collapsed bed, and absorption tower exiting flue gas will not need not be backed into venturi aditus laryngis entrance and carry out flue gas recirculation, reduce operating cost as the prior art.
Description
Technical field
The present invention relates to flue gas desulfurization technique field, more particularly to a kind of fume desulphurization method.The invention further relates to one kind
Flue gas desulfurization device based on the fume desulphurization method and flue gas desulphurization system.
Background technology
In fields such as chemical industry, metallurgy, a large amount of sulfur dioxide and other sour gas are contained in flue gas caused by some equipment
Body cannot be directly discharged in air such as boiler fired coal flue gas, needed to first pass through flue gas desulfurization device and carried out at desulfurization to flue gas
Reason.
Existing fume desulphurization method mainly has wet desulphurization, dry desulfurization and semi-dry desulphurization, wherein wet desulphurization is
Flue gas is passed through in desulfurizer by finger, carries out desulfurization by spraying desulfurization slurry and smoke contacts, wet desulphurization is imitated with desulfurization
The high advantage of rate, but desulfurization slurry is strong to the corrosivity of desulphurization plant；Dry desulfurization refers to that flue gas is passed through in desulfurizer,
The desulfurizing agent for the dry powder being passed through in equipment is blown afloat and is carried out contact desulfuriation by flue gas, although corrosion of the dry desulfurization to equipment
It is small, but desulfuration efficiency is relatively low；Semi-dry desulphurization refers to that flue gas is passed through in desulfurizer, the dry powder that flue gas will be passed through in equipment
Last shape desulfurizing agent is blown afloat, and sprays a small amount of liquid, and flue gas is made to be contacted with the partially dried powder desulfurizing agent for being mixed with a small amount of moisture
The advantages of desulfurization, this method has taken into account wet desulphurization and dry desulfurization simultaneously, currently, being widely used.
For dry desulfurization and semi-dry desulphurization, the problem is that：Flue gas passes through the venturi larynx in flue
Mouth is passed through in absorption tower, and dry powder desulfurizing agent and partially dried powder shape desulfurizing agent are passed through by desulfurizing agent pipeline in absorption tower, is led to
The high flow velocities for crossing the flue gas of venturi aditus laryngis are to ensure an important factor for absorption tower is not collapsed bed, and the flow velocity of usual flue gas is more than
When 35m/s, it can ensure that flue gas blows afloat desulfurizing agent, do not collapse bed.But in order to ensure the smooth discharge of boiler smoke, literary mound
In aditus laryngis size be all designed according to the smoke discharge amount under boiler peak load, so when boiler compared with Smaller load run
When, as low as that the flue gas flow rate of venturi aditus laryngis can be caused too low to a certain degree, cause desulfurizing agent in tower that can not fluidize, collapse bed.For
It solves the problems, such as this, there is a kind of technology to carry out flue gas by the way that absorption tower exiting flue gas is backed into venturi aditus laryngis entrance later
The method of recycling solves underrun stable problem, this result in air-introduced machine no matter boiler load how much, it is necessary to it is full negative
Lotus runs, and causes power consumption rate to increase, operating cost is high.
Invention content
In view of this, it is an object of the present invention to provide a kind of fume desulphurization method, to ensure flue gas desulfurization not
It collapses under the premise of bed, reduces desulphurization cost.
It is another object of the present invention to provide a kind of flue gas desulfurization devices based on the fume desulphurization method, to protect
Card flue gas desulfurization is not collapsed under the premise of bed, and desulphurization cost is reduced.
A further object of the present invention is to provide a kind of flue gas desulphurization system including the flue gas desulfurization device, to protect
Card flue gas desulfurization is not collapsed under the premise of bed, and desulphurization cost is reduced.
In order to achieve the above objectives, the present invention provides following technical scheme：
The flue gas that flue gas source generates is divided at least two gas circuits by a kind of fume desulphurization method, and one of gas circuit is stream
Change gas circuit, remaining gas circuit is to adjust gas circuit；It is passed through in absorption tower after the fluidisation gas circuit is accelerated, participates in the stream of desulfurizer powder
Change, the adjusting gas circuit is passed directly into the uptake zone in the absorption tower, participates in desulfurization；By to the flue gas for adjusting gas circuit
Amount is adjusted, and the exhaust gas volumn of the fluidisation gas circuit is made to be greater than or equal to minimum fluidization air quantity, under the minimum fluidization air quantity,
Flue gas flow rate after the acceleration of the fluidisation gas circuit reaches the flow rate setpoint fluidized for desulfurizer powder.
Preferably, in above-mentioned fume desulphurization method, the minimum fluidization air quantity of the fluidisation gas circuit is the flue gas source
The 30%~70% of generated maximum exhaust gas volumn.
Preferably, in above-mentioned fume desulphurization method, the flow rate setpoint is greater than or equal to 35m/s.
Preferably, further include backing into absorption tower exiting flue gas in fluidisation gas circuit in above-mentioned fume desulphurization method
Carry out flue gas recirculation.
The present invention also provides a kind of flue gas desulfurization device, including absorption tower, the smoke inlet on the absorption tower is provided with
Venturi aditus laryngis further includes：
Fluidisation flue for the entrance for being connected to flue gas source and the venturi aditus laryngis, the exhaust gas volumn fluidized in flue
More than or equal to minimum fluidization air quantity, the size of the venturi aditus laryngis is arranged according to the minimum fluidization air quantity, it is described most
Under small Fluidization wind rate, the exiting flue gas flow velocity of the venturi aditus laryngis reaches the flow rate setpoint fluidized for desulfurizer powder；
Adjusting flue for the uptake zone for being connected to the flue gas source and the absorption tower is provided in the adjusting flue
Flow regulator.
Preferably, in above-mentioned flue gas desulfurization device, the minimum fluidization air quantity of the fluidisation flue is produced by flue gas source
The 30%~70% of raw maximum exhaust gas volumn.
Preferably, in above-mentioned flue gas desulfurization device, the flow rate setpoint is greater than or equal to 35m/s.
Preferably, in above-mentioned flue gas desulfurization device, the fluidisation flue crosses with the adjusting flue is communicated in cigarette
Air source.
Preferably, in above-mentioned flue gas desulfurization device, the flow regulator is to be set in the adjusting flue
Flow control valve or be rotatably dispose in it is described adjusting flue and it is described fluidisation flue intersection flow-rate adjustment baffle.
Preferably, in above-mentioned flue gas desulfurization device, the adjusting flue includes air inlet section and annular air-guide section, described
Annular air-guide section is arranged around the absorption tower, and multiple uptake zones with the absorption tower are provided on the annular air-guide section and are connected
Logical nozzle.
Preferably, in above-mentioned flue gas desulfurization device, the nozzle is tilted down along the direction close to the absorption tower,
Angle between the axis and horizontal plane of the nozzle is 15 °~45 °.
Preferably, in above-mentioned flue gas desulfurization device, the nozzle is located in sustained height plane or layered arrangement.
Preferably, in above-mentioned flue gas desulfurization device, the adjusting flue includes air inlet section and annular passage, the ring
Shape air duct is surrounded in the top flared section of the venturi aditus laryngis, and the top of the annular passage and the venturi aditus laryngis
Flared section is connected to.
Preferably, in above-mentioned flue gas desulfurization device, booster fan is additionally provided on the fluidisation flue.
The present invention also provides a kind of flue gas desulphurization system, including flue gas desulfurization device, the flue gas desulfurization device such as with
Upper any one of them flue gas desulfurization device.
Preferably, further include cleaner in above-mentioned flue gas desulphurization system, the gas inlet of the cleaner with
The exhanst gas outlet on the absorption tower is connected to.
Preferably, in above-mentioned flue gas desulphurization system, including cycle flue, the both ends of the cycle flue respectively with institute
The gas outlet for stating cleaner is connected to the fluidisation flue.
Compared with prior art, the beneficial effects of the invention are as follows：
In fume desulphurization method provided by the invention, the flue gas of generation is divided at least two gas circuits and is passed through in absorption tower,
One of gas circuit is fluidisation gas circuit, remaining gas circuit is to adjust gas circuit；It is passed through in absorption tower after fluidisation gas circuit is accelerated, participates in powder
The fluidisation of shape desulfurizing agent adjusts gas circuit and is passed directly into the uptake zone in absorption tower, participates in flue gas desulfurization；By exchanging solar term road
Exhaust gas volumn is adjusted, and the exhaust gas volumn of fluidisation gas circuit is made to be greater than or equal to minimum fluidization air quantity, under minimum fluidization air quantity, fluidisation
Flue gas flow rate after the acceleration of gas circuit reaches flow rate setpoint, which fluidizes for desulfurizer powder.
Since minimum fluidization air quantity is usually less than total exhaust gas volumn that flue gas source generates at low load, even if cigarette
Air source is less in the exhaust gas volumn that underload generates, and can be adjusted by adjusting the exhaust gas volumn of gas circuit, keep the exhaust gas volumn of fluidisation gas circuit big
In or be equal to minimum fluidization air quantity, and under minimum fluidization air quantity, the flue gas flow rate after fluidisation gas circuit accelerates consistently achieves flow velocity
Desulfurizer powder can be blown afloat fluidisation, be not in the bed that collapses by setting value always.Similarly, when flue gas source is in higher load
When lower work, the exhaust gas volumn of generation is larger, and the exhaust gas volumn that again may be by adjusting gas circuit is adjusted, and makes the exhaust gas volumn of fluidisation gas circuit
Minimum fluidization air quantity or more is maintained, remaining flue gas is directly entered the uptake zone on absorption tower by adjusting gas circuit, is not involved in powdery
The fluidisation of desulfurizing agent, but desulfurization is directly participated in, all flue gases that final flue gas source generates are discharged after the desulfurization of absorption tower.
The fume desulphurization method can ensure that flue gas desulfurization is not collapsed bed either under the underload and high load capacity in flue gas source,
And absorption tower exiting flue gas will not need not be backed into venturi aditus laryngis entrance progress flue gas and followed again as the prior art
Ring reduces operating cost.
Flue gas desulfurization device and flue gas desulphurization system provided by the invention are based on the fume desulphurization method in the present invention, because
This, technique effect having the same, details are not described herein.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of flue gas desulfurization device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of second of flue gas desulfurization device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the third flue gas desulfurization device provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the third flue gas desulfurization device provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of Section A-A in Fig. 4；
Fig. 6 is the structural schematic diagram of the 4th kind of flue gas desulfurization device provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of flue gas desulphurization system provided in an embodiment of the present invention.
Wherein, 1 be fluidisation flue, 2 be venturi aditus laryngis, 3 be nozzle, 4 be absorption tower, 5 be adjust flue, 51 be air inlet
Section, 52 be annular guide section, 53 be annular passage, 6 be flow control valve, 7 be flow-rate adjustment baffle, 8 be booster fan, 9 be
Cleaner, 10 be air-introduced machine, 11 be cycle flue, 12 be desulfurizing agent reflux line.
Specific implementation mode
There is provided a kind of fume desulphurization method, the premises for the bed that do not collapse in guarantee flue gas desulfurization for core of the invention
Under, reduce desulphurization cost.
The present invention also provides a kind of flue gas desulfurization devices based on the fume desulphurization method, are not sent out in guarantee flue gas desulfurization
Under the premise of the raw bed that collapses, desulphurization cost is reduced.
The present invention also provides a kind of flue gas desulphurization systems including the flue gas desulfurization device, are not sent out in guarantee flue gas desulfurization
Under the premise of the raw bed that collapses, desulphurization cost is reduced.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- Fig. 4 is please referred to Fig.1, an embodiment of the present invention provides a kind of fume desulphurization method, this method is：Is produced from flue gas source
Raw flue gas is divided at least two gas circuits and is passed through in absorption tower 4, and one of gas circuit is fluidisation gas circuit, remaining gas circuit is to adjust gas
Road；It is passed through in absorption tower 4 after fluidisation gas circuit is accelerated, participates in the fluidisation of desulfurizer powder, is i.e. the flue gas of the fluidisation gas circuit will be inhaled
The desulfurizer powder received in tower 4 is blown afloat, the flowing in absorption tower 4；It adjusts gas circuit and is passed directly into the uptake zone in absorption tower 4, no
The fluidisation to desulfurizer powder is participated in, but directly participates in desulfurization；Exhaust gas volumn by exchanging solar term road is adjusted, and makes fluidisation
The exhaust gas volumn of gas circuit fluidizes the flue gas stream after the acceleration of gas circuit more than or equal to minimum fluidization air quantity under minimum fluidization air quantity
Speed reaches the flow rate setpoint fluidized for desulfurizer powder.
Since minimum fluidization air quantity is usually less than total exhaust gas volumn that flue gas source generates at low load, even if cigarette
Air source is less in the exhaust gas volumn that underload generates, and can be adjusted by adjusting the exhaust gas volumn of gas circuit, keep the exhaust gas volumn of fluidisation gas circuit big
In or be equal to minimum fluidization air quantity, and under minimum fluidization air quantity, the flue gas flow rate after fluidisation gas circuit accelerates consistently achieves flow velocity
Desulfurizer powder can be blown afloat fluidisation, be not in the bed that collapses by setting value always.Similarly, when flue gas source is in higher load
When lower work, the exhaust gas volumn of generation is larger, and the exhaust gas volumn that again may be by adjusting gas circuit is adjusted, and makes the exhaust gas volumn of fluidisation gas circuit
Minimum fluidization air quantity or more is maintained, remaining flue gas is directly entered the uptake zone on absorption tower 4 by adjusting gas circuit, is not involved in powdery
The fluidisation of desulfurizing agent, but desulfurization is directly participated in, all flue gases that final flue gas source generates are by 4 desulfurization heel row of absorption tower
Go out.The fume desulphurization method can ensure that flue gas desulfurization is not collapsed either under the underload and high load capacity in flue gas source
Bed, and 4 exiting flue gas of absorption tower will not need not be backed into venturi aditus laryngis entrance and carry out flue gas again as the prior art
Cycle, to reduce operating cost.
In the present embodiment, the minimum fluidization air quantity for fluidizing gas circuit is optimized, fluidizes the minimum fluidization air quantity of gas circuit
It is 30%~70% of maximum exhaust gas volumn caused by flue gas source.I.e. generated exhaust gas volumn is maximum under full capacity in flue gas source,
Using this maximum exhaust gas volumn as standard, the minimum fluidization air quantity for fluidizing gas circuit is set as the 30%~70% of the maximum exhaust gas volumn.
The arbitrary proportions such as 30%, 40%, 50%, 60% or 70% being specifically as follows in 30%~70% ratio section.
Illustrated so that minimum fluidization air quantity is the 30% of maximum exhaust gas volumn as an example, indicate the exhaust gas volumn of fluidisation gas circuit up to
To maximum exhaust gas volumn caused by flue gas source 30% or more when, the flue gas flow rate after acceleration can reach flow rate setpoint, powder
Shape desulfurizing agent can effectively be blown afloat, and be flowed in absorption tower, the bed that collapses does not occur.In the case of the minimum fluidization air quantity, such as
In its 30% or more working under load, total exhaust gas volumn that flue gas source generates is greater than or equal to the minimum fluidization wind in fruit flue gas source
Amount.
More specifically, for example, if flue gas source is in its 30% working under load, total exhaust gas volumn etc. of flue gas source generation
In the minimum fluidization air quantity, in such cases, the exhaust gas volumn for adjusting gas circuit is adjusted to zero, that is, whole flue gases are passed through into fluidisation
Gas circuit enters in absorption tower 4, participates in the fluidisation of desulfurizer powder, then the exhaust gas volumn fluidized at this time in gas circuit just reaches minimum stream
Change air quantity, the flue gas flow rate after acceleration can just reach flow rate setpoint.
For another example if flue gas source is in its 50% working under load, total exhaust gas volumn that flue gas source generates is flue gas source
The 50% of generated maximum exhaust gas volumn, and fluidize gas circuit and only need the 30% of maximum exhaust gas volumn just to disclosure satisfy that wanting for the bed that do not collapse
It asks, therefore, the exhaust gas volumn for exchanging solar term road is adjusted, and makes 30% flue gas as fluidisation gas circuit of at least maximum exhaust gas volumn
Amount, remaining less than 20% maximum exhaust gas volumn as adjusting gas circuit exhaust gas volumn.
In another example if flue gas source is in 100% lower work at full capacity, the exhaust gas volumn that flue gas source generates is maximum flue gas
Amount, in such cases, the exhaust gas volumn for exchanging solar term road is adjusted, and still makes at least 30% maximum exhaust gas volumn as fluidized gas
The exhaust gas volumn on road, remaining less than 70% maximum exhaust gas volumn as adjusting gas circuit exhaust gas volumn.
As it can be seen that when minimum fluidization air quantity is set in the 30% of maximum exhaust gas volumn, under 30% or more the load in flue gas source
When work, as long as the exhaust gas volumn of fluidisation gas circuit is made to maintain 30% maximum exhaust gas volumn, correspondingly, adjusting gas circuit undertakes it
The maximum exhaust gas volumn of remaining 0~70%.
Similarly, when specified exhaust gas volumn is the maximum exhaust gas volumn of 40%, 50%, 60%, 70% equal proportion, as long as flue gas source
Corresponding 40%, 50%, 60%, the above working under load of 70% equal proportion, can be by exchanging the exhaust gas volumn on solar term road
It is adjusted, realizes that the exhaust gas volumn of fluidisation gas circuit works under specified exhaust gas volumn, be not in the bed that collapses.
In the present embodiment, flow rate setpoint is optimized, flow rate setpoint is greater than or equal to 35m/s, specifically can be with
For any numbers such as 35m/s, 40m/s, 45m/s or 50m/s.That is, the flue gas flow rate after the acceleration of fluidisation gas circuit is greater than or equal to
Be not in the bed that collapses when 35/s, 40m/s, 45m/s or 50m/s, specific flow rate setpoint depending on actual process needs, and
It is not limited to the numerical value cited by the present embodiment.
Further, in order to enable fume desulphurization method to carry out flue gas desulfurization under the more running on the lower load in flue gas source and
Do not collapse bed, and in the present embodiment, flue gas behind absorption tower 4 can also be backed into fluidisation gas circuit and be carried out by fume desulphurization method
Flue gas recirculation fluidizes the flue gas in gas circuit with supplement, when working under underload of the flue gas source less than minimum fluidization air quantity, protects
The exhaust gas volumn of card fluidisation gas circuit reaches minimum fluidization air quantity.In this way, what the fume desulphurization method can be almost equal to zero in flue gas source
The normal operation that absorption tower 4 is completed under load, meets flue gas desulfurization of flue gas source during rapid starting/stopping.
As Figure 1-Figure 4, it is based on fume desulphurization method described in any of the above embodiment, the embodiment of the present invention also carries
A kind of flue gas desulfurization device, including absorption tower 4, venturi aditus laryngis 2, fluidisation flue 1, adjusting flue 5 and flow-rate adjustment dress are supplied
It sets.Wherein, venturi aditus laryngis 2 is arranged at the bottom smoke inlet on absorption tower 4；Fluidize flue 1 both ends respectively with flue gas source
It is connected to the entrance of venturi aditus laryngis 2, the exhaust gas volumn fluidized in flue 1 is greater than or equal to minimum fluidization air quantity, venturi aditus laryngis 2
Size according to minimum fluidization air quantity be arranged, the size of venturi aditus laryngis 2 meets the following conditions, under minimum fluidization air quantity, text
The exiting flue gas flow velocity of aditus laryngis 2 reaches the flow rate setpoint fluidized for desulfurizer powder in mound；It adjusts flue 5 and is connected to flue gas source
With the uptake zone on absorption tower 4, flow regulator setting is on adjusting flue 5, for being adjusted to the exhaust gas volumn for adjusting flue 5
Section.
The operation principle and the course of work of the flue gas desulfurization device be：The flue gas that flue gas source (being usually boiler) generates, one
Part enters fluidisation flue 1, enters in absorption tower 4 by venturi aditus laryngis 2, (is usually by the desulfurizer powder in absorption tower 4
Calcium hydroxide) it blows afloat, make desulfurizer powder flowing in absorption tower 4；Remaining flue gas is directly entered absorption tower 4 by adjusting flue 5
Be located in the uptake zone of the top of venturi aditus laryngis 2, which will not have an impact the flow regime of desulfurizer powder,
It is only involved in desulfurization, finally, absorption tower 4 is discharged in whole flue gases after desulfurization.Since the size of venturi aditus laryngis 2 (is specially
Bore, length and reducing and expansion angle) it is designed according to minimum fluidization air quantity, when fluidizing the exhaust gas volumn in flue 1 in minimum fluidization wind
When measuring above, as long as by venturi aditus laryngis 2, flue gas flow rate out can reach flow rate setpoint, that is, can be by powdery
Desulfurizing agent is blown afloat, and is not in the bed that collapses, and fluidizes the exhaust gas volumn in flue 1 by the way that the exhaust gas volumn for adjusting flue 5 is adjusted
It arrives.
The flue gas fluidizer is either under the underload and high load capacity in flue gas source, as long as the exhaust gas volumn that flue gas source generates
More than minimum fluidization air quantity, it can ensure that flue gas desulfurization is not collapsed bed, and will not need not will be inhaled as the prior art
It receives before 4 exiting flue gas of tower backs into 2 entrance of venturi aditus laryngis and carries out flue gas recirculation, to reduce operating cost.
Further, in the present embodiment, the minimum fluidization air quantity of fluidisation flue 1 is maximum flue gas caused by flue gas source
The 30%~70% of amount.It illustrates referring to the record in fume desulphurization method, details are not described herein.
Further, in the present embodiment, flow rate setpoint is greater than or equal to 35m/s.It illustrates de- referring to flue gas
The record of sulphur method, details are not described herein.
As Figure 1-Figure 4, in the present embodiment, fluidisation flue 1 crosses with adjusting flue 5 is communicated in flue gas source, that is, cigarette
After the flue gas of air source first collects discharge, then it is divided into fluidisation flue 1 and adjusts flue 5.Certainly, fluidisation flue 1 and adjusting cigarette
Road 5 can also be individually connected to flue gas source, and the flue gas in flue gas source directly respectively enters fluidisation flue 1 and adjusts flue 5.As long as energy
Enough realize the adjusting circulation of flue gas.Adjust flue 5 quantity do not limit herein, can be one, two, three etc. more
It is multiple.
As shown in Figure 1, Figure 2 and Figure 4, a kind of specific flow regulator, flow-rate adjustment dress are present embodiments provided
It is set to be arranged and is adjusting the flow control valve 6 in flue 5.By adjusting aperture and the keying of flow control valve 6, fluidisation cigarette is adjusted
Exhaust gas volumn in road 1.
As shown in figure 3, present embodiments providing another specific flow regulator, which is rotation
It is set to the flow-rate adjustment baffle 7 for the intersection for adjusting flue 5 and fluidisation flue 1, specifically, the rotation of flow-rate adjustment baffle 7 connects
It is connected to the inlet for adjusting flue 5 and close to the one side edge of venturi aditus laryngis 2, flow-rate adjustment baffle 7 can be to adjusting flue 5
The outer side to overturn of entrance, the difference of flip angle realizes the adjusting for adjusting exhaust gas volumn in flue 5, when flow-rate adjustment baffle 7 fastens
When adjusting the entrance of flue 5, adjusts flue 5 and close, the angle that flow-rate adjustment baffle 7 flips to the outside is bigger, then fluidizes cigarette
The flue gas flow in road 1 is smaller.
As shown in Figures 2 and 3, a kind of specific structure for adjusting flue 5, the adjusting flue 5 packet are present embodiments provided
The air inlet section 51 and annular air-guide section 52, one end of air inlet section 51 for including connection are connected to flue gas source, can specifically be handed over fluidisation flue 1
It converges, the other end of air inlet section 51 is connected to annular air-guide section 52, and annular air-guide section 52 is arranged around absorption tower 4, annular air-guide section
The nozzle 3 that multiple uptake zones with absorption tower 4 are connected to is provided on 52.Pass through annular air-guide section into the flue gas for adjusting flue 5
After 52 annular air guide, into multiple nozzles 3, sprayed in absorption tower 4 by nozzle 3.Preferably, multiple nozzles 3 are along annular
The circumferencial direction of air-guide section 52 is evenly arranged, and improves the uniformity of jet.
Further, in the present embodiment, nozzle 3 is tilted down along the direction close to absorption tower 4, the axis of nozzle 3 with
Angle between horizontal plane is 15 °~45 °, more preferably 20 °~30 °.It is in order to anti-by the purpose that nozzle 3 is arranged diagonally downward
The only flue gas dust stratification in nozzle 3 in slow flow conditions avoids nozzle 3 from blocking.
Further, in the present embodiment, nozzle 3 is located in sustained height plane or layered arrangement, that is, is located at difference
Elevation plane.Such setting be in order to ensure flue gas be uniformly mixed and tower in flue gas flow it is reasonable.
As shown in Figure 4 and Figure 5, another specific structure for adjusting flue 5, the adjusting flue 5 are present embodiments provided
One end of air inlet section 51 including connection and annular passage 53, air inlet section 51 is connected to flue gas source, can specifically be handed over fluidisation flue 1
It converges, the other end of air inlet section 51 is connected to annular passage 53, and annular passage 53 is surrounded on the top flared section of venturi aditus laryngis 2
On, annular passage 53 is surrounded by the outer wall of venturi aditus laryngis 2 with annular passage shell, and annular passage 53 and venturi aditus laryngis 2
The connection of top flared section.Flue gas passes through air inlet section 51 and annular passage 53 successively, and venturi larynx is sprayed into the form of annular wind
In the top flared section of mouth 2, the flow velocity and flow regime of the flue gas by venturi aditus laryngis 2 will not be had an impact, be ensure that
Normal operation.
As shown in Figure 1, certainly, it can also be simple pipeline to adjust flue 5, the both ends of pipeline respectively with flue gas source and suction
It receives tower 4 to be connected to, only intake uniformity is not so good as the first two structure.
As shown in fig. 6, further, in the present embodiment, fluidizing and being additionally provided with booster fan 8 on flue 1, pass through setting
Booster fan 8 opens booster fan 8 when the exhaust gas volumn in fluidizing flue 1 is not enough to maintain flow rate setpoint, to fluidize cigarette
Flue gas in road 1 provides higher pressure head, preferably to meet the flow rates demand at venturi aditus laryngis 2.
It is also carried based on fume desulphurization method and flue gas desulfurization device, the embodiment of the present invention described in any of the above embodiment
Supply a kind of flue gas desulphurization system comprising flue gas desulfurization device, and the flue gas desulfurization device is retouched by any of the above embodiment
The flue gas desulfurization device stated.
It is low negative therefore, it is possible to meet flue gas source since flue gas desulphurization system uses the flue gas desulfurization device in the present invention
Flue gas desulfurization under lotus and high load capacity, and the bed that do not collapse reduces operating cost compared with prior art.
Further, as shown in fig. 7, flue gas desulphurization system further includes cleaner 9, the gas inlet of cleaner 9 with
The exhanst gas outlet on absorption tower 4 is connected to, and there are flue dust in the flue gas after desulfurization process, therefore is carried out to flue gas by cleaner 9
Dust removal process is discharged again later.Cleaner 9 can be cloth cleaner.
Further, in the present embodiment, flue gas desulphurization system further includes cycle flue 11, the both ends of cycle flue 11
It is connected to respectively with the gas outlet of cleaner 9 and fluidisation flue 1, air-introduced machine 10 is set on cycle flue 11, passes through air-introduced machine 10
Clean flue gas is backed into again before the entrance of venturi aditus laryngis 2, carry out recycling for flue gas, to supplement fluidisation flue
Flue gas in 1 makes the exhaust gas volumn in fluidisation flue 1 under more running on the lower load, reaches minimum fluidization air quantity, ensures flue gas desulfurization
Normal desulfurization operation under more running on the lower load.
As an optimization, in the present embodiment, the desulfurizer powder to get off is deposited in cleaner 9 to be recycled, tool
Before body can return to the entrance of venturi aditus laryngis 2 by the desulfurizing agent recovery channel 12 of 9 bottom of cleaner, desulfurizing agent is realized
It repeats and makes full use of.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (17)
1. a kind of fume desulphurization method, which is characterized in that the flue gas that flue gas source generates is divided at least two gas circuits, one of them
Gas circuit is fluidisation gas circuit, remaining gas circuit is to adjust gas circuit；It is passed through after the fluidisation gas circuit is accelerated in absorption tower (4), participates in powder
The fluidisation of shape desulfurizing agent, the adjusting gas circuit are passed directly into the uptake zone in the absorption tower (4), participate in desulfurization；By to institute
The exhaust gas volumn for stating adjusting gas circuit is adjusted, and so that the exhaust gas volumn of the fluidisation gas circuit is greater than or equal to minimum fluidization air quantity, in institute
It states under minimum fluidization air quantity, the flue gas flow rate after the acceleration of the fluidisation gas circuit reaches the flow velocity fluidized for desulfurizer powder and sets
Definite value.
2. fume desulphurization method according to claim 1, which is characterized in that it is described fluidisation gas circuit minimum fluidization air quantity be
The 30%~70% of maximum exhaust gas volumn caused by the flue gas source.
3. fume desulphurization method according to claim 1, which is characterized in that the flow rate setpoint is greater than or equal to 35m/
s。
4. fume desulphurization method according to claim 1, which is characterized in that further include by the outlet of the absorption tower (4)
Flue gas backs into fluidisation gas circuit and carries out flue gas recirculation.
5. the smoke inlet of a kind of flue gas desulfurization device, including absorption tower, the absorption tower (4) is provided with venturi aditus laryngis (2),
It is characterized in that, further including：
Fluidisation flue (1) for the entrance for being connected to flue gas source and the venturi aditus laryngis (2), in the fluidisation flue (1)
Exhaust gas volumn is greater than or equal to minimum fluidization air quantity, and the size of the venturi aditus laryngis (2) is arranged according to the minimum fluidization air quantity,
Under the minimum fluidization air quantity, the exiting flue gas flow velocity of the venturi aditus laryngis (2) reaches to be fluidized for desulfurizer powder
Flow rate setpoint；
Adjusting flue (5) for the uptake zone for being connected to the flue gas source and the absorption tower (4), on the adjusting flue (5)
It is provided with flow regulator.
6. flue gas desulfurization device according to claim 5, which is characterized in that the minimum fluidization wind of the fluidisation flue (1)
Amount is 30%~70% of maximum exhaust gas volumn caused by flue gas source.
7. flue gas desulfurization device according to claim 5, which is characterized in that the flow rate setpoint is greater than or equal to 35m/
s。
8. flue gas desulfurization device according to claim 5, which is characterized in that the fluidisation flue (1) and the adjusting cigarette
Road (5), which crosses, is communicated in the flue gas source.
9. flue gas desulfurization device according to claim 8, which is characterized in that the flow regulator is to be arranged described
It adjusts the flow control valve (6) in flue (5) or is rotatably dispose in the friendship of the adjusting flue (5) and the fluidisation flue (1)
Flow-rate adjustment baffle (7) at remittance.
10. according to claim 5-9 any one of them flue gas desulfurization devices, which is characterized in that the adjusting flue (5) includes
Air inlet section (51) and annular air-guide section (52), the annular air-guide section (52) are arranged around the absorption tower (4), and the annular is led
The nozzle (3) that multiple uptake zones with the absorption tower (4) are connected to is provided in gas section (52).
11. flue gas desulfurization device according to claim 10, which is characterized in that the nozzle (3) is along close to the absorption
The direction of tower (4) tilts down, and the angle between the axis and horizontal plane of the nozzle (3) is 15 °~45 °.
12. flue gas desulfurization device according to claim 10, which is characterized in that the nozzle (3) is flat positioned at sustained height
In face or layered arrangement.
13. according to claim 5-9 any one of them flue gas desulfurization devices, which is characterized in that the adjusting flue (5) includes
Air inlet section (51) and annular passage (53), the annular passage (53) are surrounded on the top flared section of the venturi aditus laryngis (2)
On, and the annular passage (53) is connected to the top flared section of the venturi aditus laryngis (2).
14. according to claim 5-9 any one of them flue gas desulfurization devices, which is characterized in that on the fluidisation flue (1) also
It is provided with booster fan (8).
15. a kind of flue gas desulphurization system, including flue gas desulfurization device, which is characterized in that the flue gas desulfurization device such as right is wanted
Seek 5-14 any one of them flue gas desulfurization devices.
16. flue gas desulphurization system according to claim 15, which is characterized in that further include cleaner (9), the dedusting
The gas inlet of equipment (9) is connected to the exhanst gas outlet of the absorption tower (4).
17. flue gas desulphurization system according to claim 16, which is characterized in that further include cycle flue (11), it is described to follow
The both ends of annular smoke flue (11) are connected to the gas outlet of the cleaner (9) and the fluidisation flue (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485515.3A CN108579398A (en) | 2018-05-21 | 2018-05-21 | A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485515.3A CN108579398A (en) | 2018-05-21 | 2018-05-21 | A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108579398A true CN108579398A (en) | 2018-09-28 |
Family
ID=63632118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485515.3A Pending CN108579398A (en) | 2018-05-21 | 2018-05-21 | A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108579398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440998A (en) * | 2020-03-24 | 2021-09-28 | 沈阳铝镁设计研究院有限公司 | Novel semi-dry desulfurization device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404765Y (en) * | 2009-05-13 | 2010-02-17 | 黄震 | Low-resistance type circulating fluidized bed flue gas desulfurization |
| CN102210972A (en) * | 2011-04-13 | 2011-10-12 | 福建龙净脱硫脱硝工程有限公司 | Device and method for capturing carbon dioxide in flue gas |
| CN202725021U (en) * | 2012-07-16 | 2013-02-13 | 南京龙玖环境工程有限公司 | Low-energy consumption adjustable-load circulating fluidized bed desulfurizing tower |
-
2018
- 2018-05-21 CN CN201810485515.3A patent/CN108579398A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404765Y (en) * | 2009-05-13 | 2010-02-17 | 黄震 | Low-resistance type circulating fluidized bed flue gas desulfurization |
| CN102210972A (en) * | 2011-04-13 | 2011-10-12 | 福建龙净脱硫脱硝工程有限公司 | Device and method for capturing carbon dioxide in flue gas |
| CN202725021U (en) * | 2012-07-16 | 2013-02-13 | 南京龙玖环境工程有限公司 | Low-energy consumption adjustable-load circulating fluidized bed desulfurizing tower |
Non-Patent Citations (1)
| Title |
|---|
| 唐强等: "旁通式循环流化床脱硫塔脱硫特性的数值模拟", 《煤炭转化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440998A (en) * | 2020-03-24 | 2021-09-28 | 沈阳铝镁设计研究院有限公司 | Novel semi-dry desulfurization device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105107364B (en) | Suitable for the flue gas desulphurization system of concurrent spray semidry method | |
| CN102784556B (en) | Homogeneous flow-field circulating fluidized bed flue gas desulfurization technology | |
| CN101653682A (en) | Boiler-rear flue gas desulphurization and synergism device of circulating fluid bed boiler and desulphurization and synergism method | |
| CN108671715A (en) | A kind of coal-fired flue-gas sulfur trioxide removing means and its application method and application | |
| CN208320400U (en) | A kind of flue gas desulfurization device and flue gas desulphurization system | |
| CN111744362A (en) | Ceramic industry comprehensive flue gas cooperative treatment system | |
| CN102266718B (en) | Semi dry process flue gas desulfurization method of circulating fluidized bed based on circulation, and apparatus thereof | |
| CN108722114A (en) | Powdered activated coke adsorpting desulfurization device and the method that absorption desulfurization is carried out to flue gas using it | |
| CN108579398A (en) | A kind of fume desulphurization method, flue gas desulfurization device and flue gas desulphurization system | |
| CN105477963A (en) | Coal-fired boiler flue gas environmentally-friendly deep treatment method and apparatus | |
| CN201978669U (en) | Dual-spray-gun flue gas desulfurization device for circulating fluidized bed | |
| CN105889960A (en) | Flue gas desulfurization device for coal-fired boiler | |
| CN208287799U (en) | A kind of desulfurization integrated purifying column of high-effective dust-removing | |
| CN201384927Y (en) | Flue gas desulphurization device of circulating fluidized bed | |
| CN208878220U (en) | Powdered activated coke adsorpting desulfurization device | |
| CN209263071U (en) | A kind of circulating fluidized bed boiler minimum discharge device | |
| CN206492395U (en) | A kind of flue gas pollutant joint removing system based on activity solid absorbent | |
| CN109304080A (en) | A kind of ultralow SO2The semidry-method recirculating fluidized bed flue gas desulphurization system of discharge | |
| CN109012101A (en) | A kind of ceramics flue-gas dust-removing and desulfurization denitrating system | |
| CN212492403U (en) | Ceramic industry comprehensive flue gas cooperative treatment system | |
| CN208287777U (en) | A kind of novel coal-fired boiler high-efficience dust-remove desulfurization system | |
| CN209612600U (en) | A kind of power plant boiler smoke discharging device | |
| CN208553733U (en) | A kind of system that base reagent removes sulfur trioxide in flue gas | |
| CN209005536U (en) | A kind of ultralow SO2The semidry-method recirculating fluidized bed flue gas desulphurization system of discharge | |
| CN208340492U (en) | A kind of coal-fired flue-gas sulfur trioxide removing means based on quenched trona |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180928 |
|
| WD01 | Invention patent application deemed withdrawn after publication |