CN208485808U - Quick lime recirculating fluidized bed is classified dry digestive system - Google Patents
Quick lime recirculating fluidized bed is classified dry digestive system Download PDFInfo
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- CN208485808U CN208485808U CN201821057055.6U CN201821057055U CN208485808U CN 208485808 U CN208485808 U CN 208485808U CN 201821057055 U CN201821057055 U CN 201821057055U CN 208485808 U CN208485808 U CN 208485808U
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Abstract
The utility model discloses a kind of quick lime recirculating fluidized beds to be classified dry digestive system, it is related to the dry digestive system technical field of quick lime, including digesting tower, digesting tower includes venturi, digestion tower is located at venturi top and is communicated with feeding system, it is communicated with desulfurizing tower positioned at venturi lower part, and forms fluidised bed zones above venturi, digestion tower, which is located above fluidised bed zones, is equipped with waterworks；Digestion tower, which is located above waterworks, is communicated with separator, separator includes primary cyclone and secondary cyclone, the import of primary cyclone is connected to digestion tower, lower exit port is connected to fluidised bed zones, the inlet communication of top outlet and secondary cyclone, secondary cyclone include calcium hydroxide outlet and exhanst gas outlet.The digestibility of quick lime not only can be improved in the utility model, reduces to the quality requirements of entrance quick lime, and can reuse flue gas, energy saving and slow down influence to environment.
Description
Technical field
The present invention relates to dry digestive system technical fields, are classified dry digestion more particularly to a kind of quick lime recirculating fluidized bed
System.
Background technique
As China controls and cuts down SO2Discharge dynamics continues to increase, and flue gas desulfurization has entered Rapid development stage, and
Calcium hydroxide is produced in existing dry desulfurization and semi-dry desulphurization mostly uses churned mechanically mode to produce, traditional mechanical stirring
Carrying out quicklime slaking is to add water to make calcium lime powder and water mixture slaking to produce calcium hydroxide in blender, and this method, which is produced, to disappear
Quicklime slaking is insufficient during lime, and calcium hydroxide obtained cannot reach uniform puffy dry powder requirement.
Summary of the invention
Quicklime slaking is not during preparing calcium hydroxide the technical problem to be solved by the present invention is to current dry digester
Sufficiently, higher to the quality requirements of entrance quick lime, and calcium hydroxide cannot reach uniform puffy dry powder requirement.
In order to solve the above technical problems, the present invention provides a kind of quick lime recirculating fluidized bed classification dry digestive system, packet
Digestion tower is included, the digestion tower includes venturi, and the digestion tower is located at venturi top and is communicated with feeding system, is located at literary mound
In lower part be communicated with cleaning high-temperature flue gas (>=100 DEG C), and fluidised bed zones are formed above the venturi, the digestion tower position
Waterworks are equipped with above fluidised bed zones；
The digestion tower, which is located above waterworks, is communicated with separator, and the separator includes one cyclonic separation
The import of device and secondary cyclone, the primary cyclone is connected to digestion tower, and lower exit port and fluidised bed zones connect
Logical, the inlet communication of top outlet and secondary cyclone, the secondary cyclone includes calcium hydroxide outlet and flue gas
Outlet, the calcium hydroxide outlet calcium hydroxide powder cabin, the exhanst gas outlet are connected to desulfurizing tower.
Technical effect: the digestion tower that the present invention is arranged provides space to prepare calcium hydroxide, and the tower gas approach of setting provides
The flue gas of flue gas after high temperature desulfurizing dedusting, high temperature desulfurizing is distributed via venturi, and fluidised bed zones are formed above venturi, raw
Lime is transported by feeding system to fluidised bed zones, is dispelled by high-temperature flue gas, is maintained at quick lime powder under fluidized state, water supply
Device is located above fluidised bed zones, for providing moisture, the quick lime that moisture is entered fluidised bed zones and dispelled due to gravity
Contact, reaction generate calcium hydroxide, and in this process, quick lime is fluidized by high-temperature flue gas, more dispersed, what waterworks provided
Moisture can largely be contacted with quick lime, so as to so that the comparison of quicklime slaking is abundant, digestibility 91-93%,
The efficiency for preparing calcium hydroxide is improved simultaneously, and due to the effect of high-temperature flue gas, dry puffy can be presented in calcium hydroxide obtained,
It can achieve production requirement, in addition, quick lime a part of the invention and water generate calcium hydroxide in reaction zone, another part is not anti-
The quick lime answered enters with flue gas together in the primary cyclone of setting, can remove heavier bulky grain and go out from below
It is back to after mouth discharge in digestion tower and re-starts digestion, looped back and forth like this, can further propose the digestibility of quick lime
Up to 94-95%, the flue gas of one cyclonic house outlet, which enters in second level cyclone dust removal gas, further to be separated except thinner niter
Grey mixture is stored to niter ash cellar, and then high-temperature flue gas, which is re-introduced into desulfurizing tower, is circulated in digestion tower,
The digestibility of quick lime not only can be improved in the present invention, reduces the quality requirements of digestive system entrance quick lime, and can repeat
It is energy saving and slow down influence to environment using flue gas.
The technical solution that the present invention further limits is: the waterworks include the atomization spray being arranged in digestion tower
Head, the atomizer are connected with technique water system.
Further, the position of corresponding material feeding system is equipped with feed inlet on the digestion tower, and the feed inlet refuses text
The vertical range of upper end is 1000mm in mound.
The preceding quick lime recirculating fluidized bed is classified dry digestive system, and the desulfurizing tower enters flue-gas temperature in digestion tower
It is 100~105 degree.
The preceding quick lime recirculating fluidized bed is classified dry digestive system, and the flue gas flow rate at the venturi outlet is 60
~70m/s.
The preceding quick lime recirculating fluidized bed is classified dry digestive system, and the feed partial size of the feeding system is≤3mm.
The beneficial effects of the present invention are:
(1) vertical range of the feed inlet away from venturi upper end being arranged in the present invention is 1000mm, and such quick lime enters
Into fluidised bed zones, quick lime can be made to be maximized by high-temperature flue gas fluidisation degree, thus react it greatly with water,
Improve the digestibility of quick lime；
(2) flue gas flow rate in the present invention at the venturi outlet that is arranged is 60~70m/s, and the feed grain of feeding system
Diameter is 3mm, can be abundant when the quick lime of this range partial size enters the fluidised bed zones that flue gas flow rate is 60~70m/s
Then fluidisation adequately carries out haptoreaction with water, improve quicklime slaking rate；
(3) the use bidirectional flow atomizing lance for the waterworks being arranged in the present invention, atomizing particle size≤100 micron, in this way
Atomized water can come into full contact with the quick lime being fluidized in fluidised bed zones, to further increase quicklime slaking rate.
Detailed description of the invention
Fig. 1 is the present invention for embodying the structural schematic diagram of digestion tower.
Wherein: 1, digesting tower；11, venturi；12, fluidised bed zones；2, atomizer；3, primary cyclone；31, on
Side outlet；32, lower exit port；4, secondary cyclone；41, calcium hydroxide exports；42, exhanst gas outlet；5, feed inlet.
Specific embodiment
Embodiment: a kind of quick lime recirculating fluidized bed is classified dry digestive system, structure as shown in Figure 1, include digestion tower 1,
Digesting tower 1 includes venturi 11, and digestion tower 1 is located at 11 top of venturi and is communicated with for providing the feed system of quick lime raw material
System, is communicated with positioned at 11 lower part of venturi for providing the desulfurizing tower of high-temperature flue gas, and form fluidized bed above venturi 11
Area 12, i.e. quick lime enter fluidised bed zones 12, are fluidized by high-temperature flue gas, and digestion tower 1, which is located to be equipped with above fluidised bed zones 12, to be given
Water installations provide moisture for the quick lime to fluidised bed zones 12, its reaction are made to generate calcium hydroxide.
Digestion tower 1, which is located above waterworks, is communicated with separator, and separator includes primary cyclone 3 and two
The import of grade cyclone separator 4, primary cyclone 3 is connected to digestion tower 1, and lower exit port 32 is connected to fluidised bed zones 12,
The inlet communication of top outlet 31 and secondary cyclone 4, quick lime a part are reacting generation with water in fluidised bed zones 12
Calcium hydroxide, the complete quick lime of another part unreacted enter in the primary cyclone 3 of setting together with flue gas, can remove
Heavier bulky grain, which exports to be back to after 32 discharges in digestion tower 1 from below, re-starts digestion, loops back and forth like this, second level is revolved
Wind separator 4 includes calcium hydroxide outlet 41 and exhanst gas outlet 42,41 connection calcium hydroxide powder cabin of calcium hydroxide outlet, the company of exhanst gas outlet 42
Logical desulfurizing tower, high-temperature flue gas, which is re-introduced into desulfurizing tower, to be circulated in digestion tower 1, is recycled.
Waterworks include the atomizer 2 being arranged in digestion tower 1, and atomizer 2 is connected with technique water system, and mist
Change spray head 2 water discharging direction and fluidised bed zones 12 flue gas flow direction face, such fog can be fluidized in fluidised bed zones 12
Quick lime come into full contact with, to further increase quicklime slaking rate, the flue gas flow rate in 11 exit of venturi is 60~
70m/s, the feed partial size of feeding system are 3mm, and the quick lime of this range partial size enters the stream that flue gas flow rate is 60~70m/s
When the area 12 Hua Chuan, it can be fully fluidised.
The position for digesting corresponding material feeding system on tower 1 is equipped with feed inlet 5, and feed inlet 5 refuses hanging down for 11 upper end of venturi
Straight distance is 1000mm, and it is 100~105 degree that desulfurizing tower, which enters flue-gas temperature in digestion tower 1, and such quick lime enters fluidized bed
In area 12, quick lime can be made to be maximized by high-temperature flue gas fluidisation degree.
Specific implementation is described as follows:
The flue gas for the high temperature desulfurizing that desulfurization and dedusting rear fan exhaust pass provides is distributed via venturi 11, in venturi 11
Top forms fluidised bed zones 12, and quick lime is transported to fluidised bed zones 12 by feeding system, dispelled by high-temperature flue gas, makes calcium lime powder
End is maintained under fluidized state, and atomizer 2 sprays fog to fluidised bed zones 12, and moisture is contacted with the quick lime being fluidized, instead
Calcium hydroxide should be generated, in this process, quick lime is fluidized by high-temperature flue gas, and more dispersed, the moisture that waterworks provide can
Largely to be contacted with quick lime, so as to which so that the comparison of quicklime slaking is abundant, digestibility 91-93% is mentioned simultaneously
The high efficiency for preparing calcium hydroxide, and due to the effect of high-temperature flue gas, calcium hydroxide obtained can be presented puffy, can achieve life
Produce require, quick lime a part with water react generation calcium hydroxide, the complete quick lime of another part unreacted with flue gas together into
Enter in the primary cyclone 3 of setting, can remove after heavier bulky grain exports 32 discharges from below and be back to digestion tower 1
Digestion is inside re-started, is looped back and forth like this, can further be improved the digestibility of quick lime to 94-95%, one cyclonic removes
The flue gas of dirt device outlet enters in second level cyclone dust removal gas further separation except thinner calcium hydroxide mixture, is stored to disappearing
In lime silo, then high-temperature flue gas, which is re-introduced into desulfurizing tower, is circulated in digestion tower 1, and life not only can be improved in the present invention
The digestibility of lime, and flue gas can be reused, it is energy saving and slow down influence to environment.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (6)
1. a kind of quick lime recirculating fluidized bed is classified dry digestive system, including digestion tower (1), the digestion tower (1) includes literary mound
In (11), it is characterised in that: the digestion tower (1) is located at venturi (11) top and is communicated with feeding system, be located at venturi
(11) lower part is communicated with desulfurizing tower, and forms fluidised bed zones (12) above the venturi (11), and the digestion tower (1) is located at
Waterworks are equipped with above fluidised bed zones (12)；
The digestion tower (1), which is located above waterworks, is communicated with separator, and the separator includes one cyclonic separation
The import of device (3) and secondary cyclone (4), the primary cyclone (3) is connected to digestion tower (1), lower exit port
(32) it is connected to fluidised bed zones (12), top exports the inlet communication of (31) and secondary cyclone (4), the second level whirlwind
Separator (4) includes calcium hydroxide outlet (41) and exhanst gas outlet (42), and the calcium hydroxide outlet (41) is connected to calcium hydroxide powder cabin, institute
State exhanst gas outlet (42) connection desulfurizing tower.
2. quick lime recirculating fluidized bed according to claim 1 is classified dry digestive system, it is characterised in that: the water supply dress
The atomizer (2) including being arranged in digestion tower (1) is set, the atomizer (2) is connected with technique water system, and the mist
Change the water discharging direction of spray head (2) and the flue gas flow direction face of fluidised bed zones (12).
3. quick lime recirculating fluidized bed according to claim 1 is classified dry digestive system, it is characterised in that: the digestion tower
(1) position of corresponding material feeding system is equipped with feed inlet (5) on, and the feed inlet (5) is vertical away from venturi (11) upper end
Distance is≤1000mm.
4. quick lime recirculating fluidized bed according to claim 1 is classified dry digestive system, it is characterised in that: the desulfurizing tower
It is 100~105 degree into digestion tower (1) interior flue-gas temperature.
5. quick lime recirculating fluidized bed according to claim 1 is classified dry digestive system, it is characterised in that: the venturi
(11) flue gas flow rate in exit is 60~70m/s.
6. quick lime recirculating fluidized bed according to claim 1 is classified dry digestive system, it is characterised in that: the feed system
The feed partial size of system is≤3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821057055.6U CN208485808U (en) | 2018-07-04 | 2018-07-04 | Quick lime recirculating fluidized bed is classified dry digestive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821057055.6U CN208485808U (en) | 2018-07-04 | 2018-07-04 | Quick lime recirculating fluidized bed is classified dry digestive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208485808U true CN208485808U (en) | 2019-02-12 |
Family
ID=65249316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821057055.6U Active CN208485808U (en) | 2018-07-04 | 2018-07-04 | Quick lime recirculating fluidized bed is classified dry digestive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208485808U (en) |
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2018
- 2018-07-04 CN CN201821057055.6U patent/CN208485808U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Quicklime circulating fluidized bed grading dry digestion system Effective date of registration: 20191226 Granted publication date: 20190212 Pledgee: Jiangsu Credit Financing Guarantee Co., Ltd. Pledgor: Jiangsu Jiaxin Environmental Protection Engineering Co. Ltd. Registration number: Y2019320000404 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201203 Granted publication date: 20190212 Pledgee: Jiangsu Credit Financing Guarantee Co.,Ltd. Pledgor: JIANGSU JIAXIN ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2019320000404 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |