CN208824241U - A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device - Google Patents
A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device Download PDFInfo
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- CN208824241U CN208824241U CN201821198673.2U CN201821198673U CN208824241U CN 208824241 U CN208824241 U CN 208824241U CN 201821198673 U CN201821198673 U CN 201821198673U CN 208824241 U CN208824241 U CN 208824241U
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- CN
- China
- Prior art keywords
- fluidized bed
- molecular sieve
- pipe
- denitration
- drying
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Abstract
The utility model discloses a kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting devices, belong to flue gases purification field.Fluidized bed, denitrating system and drying, dedusting room including being equipped with desulfurizing agent；It is connected with fume pipe on fluidized bed, heater is equipped on fume pipe；Air entraining pipe is also connected on fluidized bed, air entraining pipe is connect with denitrating system, and denitrating system is connect with drying, dedusting room by gas-guide tube, and drying, dedusting chamber interior is equipped with molecular sieve, and drying, dedusting is also connected with smoke discharge tube on room.Flue gas enters fluidized bed by fume pipe, with fluidisation desulfurizing agent sufficiently react after denitrating system entered by air entraining pipe, after sufficiently being reacted with denitration liquid therein, enter drying, dedusting room by gas-guide tube, finally after the molecular sieve of drying, dedusting chamber interior removes particulate matter and water, clean flue gas is passed through into smoke discharge tube discharger.The present apparatus is compact-sized, novel in design, low in cost, energy conservation and environmental protection.
Description
Technical field
The utility model belongs to flue gases purification field, and in particular to a kind of fluidized bed wet process molecular sieve sweetneing denitration removes
Dirt device.
Background technique
Industrial Boiler converts working medium thermal energy for fuel chemical energy by combustion system, and by combustion product flue gas emission into
Enter in atmospheric environment.Currently, Industrial Boiler has been widely used in the industries such as heating, coal chemical industry.The cigarette of Industrial Boiler discharge
A large amount of oxysulfides, nitrogen oxides and fine particle are carried in gas, if these flue gas direct emissions entered in atmosphere, meeting
It causes air acid corrosion and fine particle to pollute, destroys air quality, pollute environment.
Although the existing boiler overwhelming majority has been equipped with desulphurization denitration and dust-extraction unit, however, these devices separate cloth
It sets, it is necessary to which a kind of device of utility model causes that capital investment is big, equipment is huge to solve the separation of existing desulphurization denitration dust-extraction unit
Miscellaneous problem.
Utility model content
In order to effectively solve the above problems, the utility model provides a kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting dress
It sets and method.
The utility model is to be achieved through the following technical solutions:
A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device disclosed by the utility model, including being equipped with desulfurizing agent
Fluidized bed, denitrating system and drying, dedusting room；It is connected with fume pipe on fluidized bed, heater is equipped on fume pipe；Fluidized bed
On be also connected with air entraining pipe, air entraining pipe is connect with denitrating system, and denitrating system is connect with drying, dedusting room by gas-guide tube, dry
Molecular sieve is equipped with inside dirt pocket, drying, dedusting is also connected with smoke discharge tube on room.
Preferably, denitrating system includes the connecting tube of both level-one denitration pipe, second level denitration pipe and connection, and connecting tube is
Acid resisting alloy steel pipe.
Preferably, fume pipe is equipped with tachograph and control valve.
Preferably, air entraining pipe, gas-guide tube are acid resisting alloy steel pipe.
Preferably, fluidized bed includes being arranged in internal blast cap.
It is further preferred that the material of blast cap is heat resisting cast steel.
Preferably, shut-off valve is provided on gas-guide tube.
Preferably, dust-collecting box is also connected on drying, dedusting room.
Preferably, the desulfurizing agent in fluidized bed is calcium oxide desulfurizing agent.
Preferably, the content of nitrite is 10%~15% in the denitration liquid of denitrating system.
Compared with prior art, the beneficial technical effect of the utility model are as follows:
Fluidized bed wet process molecular sieve sweetneing denitration dust collecting device disclosed by the utility model, the fluidisation including being equipped with desulfurizing agent
Bed, denitrating system and drying, dedusting room.Flue gas enters fluidized bed by fume pipe, with fluidisation desulfurizing agent sufficiently react after pass through
Air entraining pipe enters denitrating system, after sufficiently reacting with denitration liquid therein, enters drying, dedusting room by gas-guide tube, final through dry
After molecular sieve removal particulate matter and water inside dry dirt pocket, clean flue gas is passed through into smoke discharge tube discharger.This dress
Set compact-sized, novel in design, low in cost, energy conservation and environmental protection.
Further, denitrating system includes the connecting tube of both level-one denitration pipe, second level denitration pipe and connection, and multistage is de-
The setting of nitre pipe is able to extend reaction time of the flue gas in denitrating system, nitrogen oxides is enable sufficiently to remove；Connecting tube is adopted
It can be improved device lifetime with acid resisting alloy steel pipe.
Further, fume pipe is equipped with tachograph and control valve, can control the flue gas flow rate into fluidized bed, make to flow
Speed can form fluidised desulfurizing agent fluidized bed well, and oxysulfide is enable adequately to remove.
Further, air entraining pipe, gas-guide tube use acid resisting alloy steel pipe, can be improved the service life of device, reduce and repair, more
The cost changed.
Further, using the fluidized bed of blast cap form, can maintain cloth wind uniformly, fluidisation stablize, can avoid the occurrence of
Dead zone is fluidized, while avoiding the deposition of bulky grain.
Closer, the material of blast cap uses heat resisting cast steel, can be avoided high temperature wear, improves the service life, reduces maintenance
And the cost of replacement.
Further, it is provided with shut-off valve on gas-guide tube, can control the time of flue gas desulfurization and denitrification, makes flue gas abundant
Follow-up process is entered back into after desulphurization denitration.
Further, it is provided with dust-collecting box on drying, dedusting room, the particulate matter of molecular sieve absorption can be removed in time, guaranteed
The normal operation of device.
Further, calcium oxide desulfurizing agent is filled in fluidized bed, removal oxysulfide effect is good, low in cost.
Further, in the denitration liquid of denitrating system in the denitration liquid of denitrating system nitrite content be 10%~
15%, the solubility of nitrogen oxides can be greatly improved, the efficiency of denitration is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model:
In figure: 1 is fume pipe；2 be blast cap；3 be fluidized bed；4 be desulfurizing agent；5 be air entraining pipe；6 be level-one denitration pipe；7
For connecting tube；8 be second level denitration pipe；9 be gas-guide tube；10 be shut-off valve；11 be drying, dedusting room；12 be molecular sieve；13 be cigarette
Gas discharge pipe；14 be denitration liquid；15 be heater.
Specific embodiment
Referring to Fig. 1, it is the fluidized bed wet process molecular sieve sweetneing denitration dust collecting device of the utility model, is connected on fluidized bed 3
Have fume pipe 1, it is preferable to use lime starches for the desulfurizing agent 4 in fluidized bed 3, on fume pipe be equipped with heater 15, tachograph and
Control valve；The blast cap 2 of the preferred heat resisting cast steel material of fluidized bed 3 is used as air-distribution device, is also connected with acid resisting alloy material on fluidized bed 3
The air entraining pipe 5 of matter, air entraining pipe 5 are connect with denitrating system, and denitration liquid 14, and nitrite in denitration liquid are filled in denitrating system
Ratio 12% or so.
Denitrating system preferably uses multistage denitrating system: including both level-one denitration pipe 6, second level denitration pipe 8 and connection
Connecting tube 7, connecting tube 7 be acid resisting alloy steel pipe.Denitrating system and drying, dedusting room 11 pass through the air guide of acid resisting alloy material
Pipe 9 connects, and is provided with shut-off valve 10 on gas-guide tube 9；It is equipped with molecular sieve 12 inside drying, dedusting room 11, is gone back on drying, dedusting room 11
It is connected with dust-collecting box and smoke discharge tube 13.
The fluidized bed wet process molecular sieve sweetneing denitration dust collecting device device of the utility model is at work:
Flue gas is introduced into heater 15 from fume pipe 1, by flue gas to 700 ° of С, then high-temperature flue gas passes through wind
Cap 2 is passed into fluidized bed 3, and the flue gas flow rate of fluidized bed is entered by tachograph and control valve control, keeps flow velocity fine
Ground forms fluidised desulfurizing agent fluidized bed, and flue gas and 4 lime starch of desulfurizing agent react as follows:
2CaO+2SO2+O2→2CaSO4
Slough SO2Flue gas be sent in level-one denitration pipe 6 through air entraining pipe 5, the NO in flue gas2、O2Occur with denitration liquid 14
Chemical reaction, and NO is added in denitration liquid 14, thus the nitrogen oxides in flue gas is removed, the chemical reaction occurred is such as
Under
4NO2+O2+2H2O→4HNO3
Due to the HNO in this kind of denitration liquid 143Content is greater than 12%, can rise to NO in pure water in dissolution rate wherein
In 100 times.Usually setting flue gas and 14 time of contact of denitration liquid be 2 hours 40 points.In order to extend nitrogen oxides in effluent
With the time of contact of denitration liquid 14, the present apparatus passes through connecting tube 7 and two by the way that multistage denitrating system is arranged, by level-one denitration pipe 6
Grade denitration pipe 8 is connected, and by the shut-off valve 10 on gas-guide tube 9, control flue gas leaves the time of denitrating system.Through denitrating system
Contain H in the flue gas of submitting2O and fine particle continue to be fed into drying, dedusting room 11, and the absorption through molecular sieve 12 is made
With moisture and fine particle are trapped, and the clean flue gas of not aqueous, grit, nitrogen oxides and oxysulfide is through flue gas exhaust
Pipe 13 is discharged in device.
Claims (9)
1. a kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device, which is characterized in that the fluidized bed including being equipped with desulfurizing agent
(3), denitrating system and drying, dedusting room (11)；It is connected on fluidized bed (3) fume pipe (1), fume pipe (1) is equipped with heater
(15)；Fluidized bed (3) is connect by air entraining pipe (5) with denitrating system, and denitrating system passes through gas-guide tube (9) and drying, dedusting room
(11) it connects, is equipped with molecular sieve (12) in drying, dedusting room (11), drying, dedusting room is also connected with smoke discharge tube on (11)
(13)。
2. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that denitrating system
Including level-one denitration pipe (6), second level denitration pipe (8) and the connecting tube for connecting level-one denitration pipe (6) and second level denitration pipe (8)
(7), connecting tube (7) is acid resisting alloy steel pipe.
3. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that fume pipe
(1) tachograph and control valve are equipped with.
4. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that air entraining pipe
(5) and gas-guide tube (9) is acid resisting alloy steel pipe.
5. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that fluidized bed
(3) blast cap (2) are equipped in.
6. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 5, which is characterized in that blast cap (2)
It is made of heat resisting cast steel.
7. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that gas-guide tube
(9) shut-off valve (10) are provided on.
8. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that drying, dedusting
Room is also connected with dust-collecting box on (11).
9. fluidized bed wet process molecular sieve sweetneing denitration dust collecting device according to claim 1, which is characterized in that fluidized bed
(3) it is filled with calcium oxide desulfurizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198673.2U CN208824241U (en) | 2018-07-26 | 2018-07-26 | A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198673.2U CN208824241U (en) | 2018-07-26 | 2018-07-26 | A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208824241U true CN208824241U (en) | 2019-05-07 |
Family
ID=66307416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821198673.2U Expired - Fee Related CN208824241U (en) | 2018-07-26 | 2018-07-26 | A kind of fluidized bed wet process molecular sieve sweetneing denitration dust collecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208824241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714358A (en) * | 2018-07-26 | 2018-10-30 | 张俊霞 | A kind of fluid bed wet method molecular sieve device of collection flue gas desulfurization denitration dust-removing |
-
2018
- 2018-07-26 CN CN201821198673.2U patent/CN208824241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714358A (en) * | 2018-07-26 | 2018-10-30 | 张俊霞 | A kind of fluid bed wet method molecular sieve device of collection flue gas desulfurization denitration dust-removing |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190507 Termination date: 20190726 |