CN209630983U - A kind of biomass electric power plant smoke processing system - Google Patents
A kind of biomass electric power plant smoke processing system Download PDFInfo
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- CN209630983U CN209630983U CN201822269762.8U CN201822269762U CN209630983U CN 209630983 U CN209630983 U CN 209630983U CN 201822269762 U CN201822269762 U CN 201822269762U CN 209630983 U CN209630983 U CN 209630983U
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Abstract
The utility model relates to a kind of biomass electric power plant smoke processing systems, including waste heat boiler and low-temperature SCR reactor, it further include the smoke temperature rack and rinion adjustment, smoke temperature adjuster and dust-extraction unit being sequentially arranged along flue gas circulating direction, smoke temperature rack and rinion adjustment is connect by drawing flue with waste heat boiler, and the exhanst gas outlet of dust-extraction unit is connect with low-temperature SCR reactor.Flue will be drawn and be arranged in boiler suitable position, so that the flue-gas temperature drawn is same or similar with the catalyst activation temperature of low-temperature SCR reactor, flue-gas temperature is accurately adjusted to by smoke temperature rack and rinion adjustment and smoke temperature adjuster again identical as the catalyst activation temperature of low-temperature SCR reactor/roughly the same, guarantee the effect of denitrating flue gas, it avoids reheating flue gas using steam, to reduce system operation energy consumption；And by smoke temperature rack and rinion adjustment and smoke temperature adjuster, it can solve influence factor caused by due to the fluctuation of biomass electric power plant flue-gas temperature, guarantee the operational safety of system.
Description
Technical field
The utility model relates to a kind of biomass electric power plant smoke processing systems.
Background technique
Currently, biomass electric power plant low-temperature denitrifying system uses SCR technology (i.e. SCR technology) at home and abroad
Certain application is obtained, main technical principle is:
Flue gas is successively after superheater in waste heat boiler, economizer and air preheater heat exchange, boiler export flue gas temperature
Therefore the temperature of boiler export flue gas is heated to catalyst by steam heater lower than the activation temperature of catalyst by degree
Activation temperature, catalyst activity is high at this time, and SCR denitration reaction is high-efficient, denitration effect is good.
It is larger for heating the steam consumption of flue gas in steam heater but in above scheme, cause the damage of heat
It loses.
Utility model content
The utility model embodiment is related to a kind of biomass electric power plant smoke processing system, can at least solve the portion of the prior art
Divide defect.
The utility model embodiment is related to a kind of biomass electric power plant smoke processing system, including waste heat boiler and low-temperature SCR
Reactor further includes the smoke temperature rack and rinion adjustment, smoke temperature adjuster and dust-extraction unit being sequentially arranged along flue gas circulating direction, described
Smoke temperature rack and rinion adjustment is connect by drawing flue with the waste heat boiler, the waste heat boiler furnace section institute drawing flue and being connected
It is adapted in temperature range with the catalyst activation temperature of the low-temperature SCR reactor, the exhanst gas outlet of the dust-extraction unit and institute
State the connection of low-temperature SCR reactor.
It is described to draw flue close to the economizer setting of the waste heat boiler and be located at economizer as one of embodiment
Side far from superheater.
As one of embodiment, the smoke temperature rack and rinion adjustment includes cigarette wind heat exchanger.
As one of embodiment, the smoke temperature adjuster includes vapor-water heat exchanger.
As one of embodiment, the dust-extraction unit includes along the sequentially connected pre-duster of flue gas circulating direction and cloth bag
Deduster.
As one of embodiment, which further includes for making flue-gas temperature and cleaner
The accident temperature regulating device of safe working temperature adaptation, the accident temperature regulating device are arranged in the smoke temperature adjuster and remove with described
Between dirt device.
As one of embodiment, the accident temperature regulating device includes the spraying mechanism for water-spraying control.
As one of embodiment, the smoke temperature rack and rinion adjustment, the smoke temperature adjuster and the accident temperature regulating device cloth
It is placed in same smoke temperature adjusting tower, the extraction flue is connect with the smoke inlet of the smoke temperature adjusting tower, and the smoke temperature is adjusted
The exhanst gas outlet of tower is connected to the smoke inlet of the dust-extraction unit.
As one of embodiment, the smoke temperature rack and rinion adjustment, the smoke temperature adjuster and the accident temperature regulating device exist
It is sequentially arranged from bottom to top in the smoke temperature adjusting tower.
As one of embodiment, which further includes air preheater, the air preheat
Device is arranged in outside the waste heat boiler and its heat transferring medium entrance is connect with the exhanst gas outlet of the low-temperature SCR reactor.
The utility model embodiment at least has the following beneficial effects:
Biomass electric power plant smoke processing system provided by the utility model will draw flue and be arranged in boiler suitable position,
So that the flue-gas temperature drawn is same or similar with the catalyst activation temperature of low-temperature SCR reactor, then filled by smoke temperature coarse adjustment
Set with smoke temperature adjuster flue-gas temperature is accurately adjusted to it is identical as the catalyst activation temperature of low-temperature SCR reactor/substantially
It is identical, guarantee the effect of denitrating flue gas, avoids reheating flue gas using steam, to reduce system operation energy consumption；And
And by smoke temperature rack and rinion adjustment and smoke temperature adjuster, influence caused by due to the fluctuation of biomass electric power plant flue-gas temperature can solve
Factor guarantees the operational safety of system.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural schematic diagram of biomass electric power plant smoke processing system provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Such as Fig. 1, the utility model embodiment provides a kind of biomass electric power plant smoke processing system, including waste heat boiler and low
Warm SCR reactor 3 further includes the smoke temperature rack and rinion adjustment 11 being sequentially arranged along flue gas circulating direction, smoke temperature adjuster 12 and is removed
Dirt device, the smoke temperature rack and rinion adjustment 11 are connect by drawing flue with the waste heat boiler, described to draw what flue was connected
Temperature range where waste heat boiler furnace section is adapted to the catalyst activation temperature of the low-temperature SCR reactor 3, the dust-extraction unit
Exhanst gas outlet connect with the low-temperature SCR reactor 3.
Biomass electric power plant smoke processing system provided in this embodiment will draw flue and be arranged in boiler suitable position, makes
The flue-gas temperature that must be drawn is same or similar with the catalyst activation temperature of low-temperature SCR reactor 3, then passes through smoke temperature rack and rinion adjustment
11 and smoke temperature adjuster 12 flue-gas temperature is accurately adjusted to it is identical as the catalyst activation temperature of low-temperature SCR reactor 3/big
It causes identical, guarantees the effect of denitrating flue gas, avoid reheating flue gas using steam, to reduce system operation energy consumption；
And by smoke temperature rack and rinion adjustment 11 and smoke temperature adjuster 12, it can solve and caused because of the fluctuation of biomass electric power plant flue-gas temperature
Influence factor, guarantee the operational safety of system.
Generally, in waste heat boiler used in biomass electric power plant, superheater, economizer have been sequentially arranged along flue gas circulating direction
And air preheater, superheater correspond to the furnace section an of temperature range before, one are corresponded between superheater and economizer
The furnace section of temperature range, corresponds to the furnace section an of temperature range between economizer and air preheater, after air preheater
Correspond to the furnace section an of temperature range.By judging temperature corresponding to the catalyst activation temperature of above-mentioned low-temperature SCR reactor 3
The furnace section spent section, and corresponding furnace section is selected to be connected as extraction flue.
Preferably, above-mentioned extraction flue, which is arranged and is located at close to the economizer of the waste heat boiler, to be saved in the present embodiment
The side of the separate superheater of coal device, smoke temperature herein generally conform to above-mentioned requirements, under the effect of multistage temperature control regulating measure, only
Needing less smoke temperature to adjust energy consumption can reach denitration requirement.
Further, in this embodiment air preheater is not provided in above-mentioned waste heat boiler, and will be outside air preheater
It sets, and the heat transferring medium entrance of the air preheater is connect with the exhanst gas outlet of above-mentioned low-temperature SCR reactor 3, by through denitration
Flue gas after reaction preheats air, can get required air preheat effect, and low-temperature SCR is made full use of to react
The exiting flue gas waste heat of device 3 reduces system energy consumption.
In the present embodiment, it is preferable that the smoke temperature rack and rinion adjustment 11 includes cigarette wind heat exchanger, is carried out using the heat exchange of cigarette wind thick
Smoke temperature is adjusted, smoke temperature is made to be maintained at certain temperature range.Certainly, however it is not limited to above-mentioned cigarette wind heat exchange means, others heat exchange hand
Section is also suitable in this present embodiment, is not repeated one by one herein.
In the present embodiment, it is preferable that the smoke temperature adjuster 12 includes vapor-water heat exchanger, carries out cigarette using steam-water heat exchanging
Warm accurate adjustment, regulating effect is good, and target temperature is adjusted precisely, and smoke temperature adjusting efficiency is higher.Similarly, however it is not limited to above-mentioned carbonated drink
Heat exchange means, other heat exchange means are also suitable in this present embodiment, do not repeat one by one herein.
The structure of above-mentioned biomass electric power plant smoke processing system is advanced optimized, such as Fig. 1, the dust-extraction unit includes along cigarette
The sequentially connected pre-duster 21 of gas circulating direction and bag filter 22 can preferably remove smoke abatement using two-stage cleaner
Dust particles in gas guarantee the cleanliness of the flue gas entered in low-temperature SCR reactor 3, improve the work of low-temperature SCR reactor 3
Make stability and service life.The conventional dust removals equipment such as cyclone dust collectors, gravitational precipitator can be used in above-mentioned pre-duster 21,
Specific structure does not repeat herein.
The structure of above-mentioned biomass electric power plant smoke processing system is advanced optimized, the biomass electric power plant smoke processing system is also
Including the accident temperature regulating device 13 for being adapted to flue-gas temperature with cleaner safe working temperature, the accident temperature regulating device
13 are arranged between the smoke temperature adjuster 12 and the dust-extraction unit.When smoke temperature is higher than downstream cleaner trouble free service temperature
When spending, accident temperature regulating device 13 starts at this time, cools down to flue gas, guarantees the safety of cleaner, especially bag-type dust
Device 22, phenomena such as avoiding burning bag.In the present embodiment, accident temperature control is carried out preferably by the way of water-spraying control, compared to it
Its type of cooling (such as electricity refrigeration), the cooling velocity of water-spraying control is fast, and cooling efficiency is higher, i.e., the described accident temperature regulating device
13 include the spraying mechanism for water-spraying control.
Advanced optimize the structure of above-mentioned biomass electric power plant smoke processing system, such as Fig. 1, the smoke temperature rack and rinion adjustment 11,
The smoke temperature adjuster 12 and the accident temperature regulating device 13 are arranged in same smoke temperature adjusting tower, the extraction flue and institute
The smoke inlet connection of smoke temperature adjusting tower is stated, the exhanst gas outlet of the smoke temperature adjusting tower and the smoke inlet of the dust-extraction unit connect
It is logical.By by each flue gas temperature controlling instruments centralized arrangement in same smoke temperature adjusting tower, it is compact-sized, land occupation face can be efficiently reduced
Long-pending and flue length；In particular, the mode for carrying out accident temperature control by the way of water-spraying control for above-mentioned, by thing
Therefore 13/ spraying mechanism of temperature regulating device, when being arranged in the top of smoke temperature adjusting tower, the cooling water of spray can be from bottom to top successively to cigarette
Warm 12 outlet side flue gas of adjuster, 12 entrance side flue gas of smoke temperature adjuster and 11 entrance side flue gas of smoke temperature rack and rinion adjustment are cold
But, guarantee accident cooling effect and efficiency, thus it is safer, it may be assumed that such as Fig. 1, the smoke temperature rack and rinion adjustment 11, the smoke temperature accurate adjustment
Device 12 is sequentially arranged in the smoke temperature adjusting tower from bottom to top with the accident temperature regulating device 13.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of biomass electric power plant smoke processing system, including waste heat boiler and low-temperature SCR reactor, it is characterised in that: also wrap
Include smoke temperature rack and rinion adjustment, smoke temperature adjuster and the dust-extraction unit being sequentially arranged along flue gas circulating direction, the smoke temperature coarse adjustment dress
It sets and is connect by drawing flue with the waste heat boiler, the temperature range where drawing the waste heat boiler furnace section that flue is connected
It is adapted to the catalyst activation temperature of the low-temperature SCR reactor, the exhanst gas outlet of the dust-extraction unit and the low-temperature SCR are anti-
Device is answered to connect.
2. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: the extraction flue is close to described
The economizer of waste heat boiler is arranged and is located at the side of the separate superheater of economizer.
3. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: the smoke temperature rack and rinion adjustment includes
Cigarette wind heat exchanger.
4. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: the smoke temperature adjuster includes
Vapor-water heat exchanger.
5. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: the dust-extraction unit includes along cigarette
The sequentially connected pre-duster of gas circulating direction and bag filter.
6. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: further include for making flue-gas temperature
The accident temperature regulating device being adapted to cleaner safe working temperature, the accident temperature regulating device are arranged in the smoke temperature accurate adjustment dress
It sets between the dust-extraction unit.
7. biomass electric power plant smoke processing system as claimed in claim 6, it is characterised in that: the accident temperature regulating device includes
Spraying mechanism for water-spraying control.
8. biomass electric power plant smoke processing system as claimed in claim 6, it is characterised in that: the smoke temperature rack and rinion adjustment, institute
It states smoke temperature adjuster and the accident temperature regulating device is arranged in same smoke temperature adjusting tower, the extraction flue and the smoke temperature
The smoke inlet of adjusting tower connects, and the exhanst gas outlet of the smoke temperature adjusting tower is connected to the smoke inlet of the dust-extraction unit.
9. biomass electric power plant smoke processing system as claimed in claim 8, it is characterised in that: the smoke temperature rack and rinion adjustment, institute
It states smoke temperature adjuster and is sequentially arranged from bottom to top in the smoke temperature adjusting tower with the accident temperature regulating device.
10. biomass electric power plant smoke processing system as described in claim 1, it is characterised in that: it further include air preheater, institute
It states air preheater and is arranged in the waste heat boiler outside and the exhanst gas outlet of its heat transferring medium entrance and the low-temperature SCR reactor
Connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269762.8U CN209630983U (en) | 2018-12-29 | 2018-12-29 | A kind of biomass electric power plant smoke processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269762.8U CN209630983U (en) | 2018-12-29 | 2018-12-29 | A kind of biomass electric power plant smoke processing system |
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| CN209630983U true CN209630983U (en) | 2019-11-15 |
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| CN201822269762.8U Active CN209630983U (en) | 2018-12-29 | 2018-12-29 | A kind of biomass electric power plant smoke processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603526A (en) * | 2018-12-29 | 2019-04-12 | 中冶南方都市环保工程技术股份有限公司 | A kind of biomass electric power plant smoke processing system |
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2018
- 2018-12-29 CN CN201822269762.8U patent/CN209630983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603526A (en) * | 2018-12-29 | 2019-04-12 | 中冶南方都市环保工程技术股份有限公司 | A kind of biomass electric power plant smoke processing system |
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