CN208457938U - Generating power with biomass combustion system and its boiler exhaust gas processing unit - Google Patents
Generating power with biomass combustion system and its boiler exhaust gas processing unit Download PDFInfo
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- CN208457938U CN208457938U CN201820992256.9U CN201820992256U CN208457938U CN 208457938 U CN208457938 U CN 208457938U CN 201820992256 U CN201820992256 U CN 201820992256U CN 208457938 U CN208457938 U CN 208457938U
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- boiler
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- boiler exhaust
- heating drying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a kind of generating power with biomass combustion system and its boiler exhaust gas processing units, boiler exhaust gas processing unit includes the boiler exhaust gas discharge-channel for being connected with boiler, and boiler exhaust gas discharge-channel is equipped with pre-heating drying storehouse, the air preheater for being preheated to inlet air of boiler and the feed water preheater for being preheated to boiler feedwater for carrying out pre-heating drying to the biomass in investment boiler.In the utility model, by the way that boiler exhaust gas to be passed through in pre-heating drying storehouse, air preheater and feed water preheater, the waste heat of boiler exhaust gas can be efficiently used to preheat biomass, inlet air of boiler and boiler feedwater, improve the integral combustion thermal efficiency.
Description
Technical field
The utility model relates to a kind of generating power with biomass combustion system and its boiler exhaust gas processing units.
Background technique
From the point of view of energy-consuming and supply, world's non-renewable energy lacks, and China's non-renewable energy is more in short supply, for this purpose, national
A series of laws and regulations are put into effect in succession with place, such as " Energy Conservation Law of the People's Republic of China ", " People's Republic of China (PRC) can
Renewable sources of energy method ", " State Council is about the notice for printing and distributing the comprehensive programme of work of energy-saving and emission-reduction ", " energy development " 12th Five-Year Plan " rule
Draw " etc..And using biomass power generation be China realize sustainable development there is an urgent need to, be solve energy outlet preferably way
One of diameter.According to the experience that biomass power generation advanced country summarizes, reducing biomass water content can be improved biomass power generation
Utilization rate reduces heat loss.In the lower weather of temperature, humidity biggish rainy days or the season in short supply in fuel, receive
The water content of fuel of purchase is big, is not able to satisfy the needs for improving generating efficiency, therefore, adopting an effective measure reduces the aqueous of fuel
Rate becomes the important link in biomass power plant production.
The workflow of combustion power generation system in the prior art is that raw material knocks down boiler progress by feeding cart feeding
Burning, the tail gas after burning enter cyclone dust collectors and carry out primary dedusting, removes large granular materials, enter back into Semi-dry scrubber
Carry out desulfurization disappear nitrogen processing, finally using pulsed jet cloth filter dedusting after, tail gas is discharged into atmosphere.
In the prior art, by the tail gas being discharged in boiler temperature with higher, disappear nitrogen and cloth in cyclone dust removal, desulfurization
Cool down during bag dedusting, increases the overall power of combustion power generation system, and tail gas in boiler by being discharged
Cyclone dust removal is directly carried out afterwards, is also caused the waste heat in tail gas that can not be effectively utilized, is reduced the utilization rate of resource,
Reduce the thermal efficiency of boiler.
Utility model content
The purpose of this utility model is to provide a kind of boiler exhaust gas processing units, to solve boiler exhaust gas in the prior art
Waste heat is without utilizing the technical problem for being discharged and causing the thermal efficiency of boiler lower；A kind of generating power with biomass combustion system is also provided
System, with solution, waste heat of boiler tail gas causes the overall power of combustion power generation system larger without utilizing i.e. discharge in the prior art
The technical issues of.
To achieve the above object, the technical solution of the utility model boiler exhaust gas processing unit is: at a kind of boiler exhaust gas
Device is managed, including the boiler exhaust gas discharge-channel for being connected with boiler, boiler exhaust gas discharge-channel is equipped with for investment
Biomass in boiler carries out the pre-heating drying storehouse of pre-heating drying, air preheater and use for being preheated to inlet air of boiler
In the feed water preheater preheated to boiler feedwater.
The beneficial effects of the utility model are: boiler exhaust gas processing unit provided by the utility model includes being connected with boiler
Boiler exhaust gas discharge-channel, boiler exhaust gas discharge-channel be equipped with pre-heating drying storehouse, air preheater and feed water preheater, make
Used time, pre-heating drying storehouse can carry out pre-heating drying to the biomass in investment boiler using the waste heat in boiler exhaust gas, with drop
Moisture content in low biomass improves generating efficiency.Air preheater can using the waste heat in boiler exhaust gas to boiler into
Wind is preheated, and feed water preheater can preheat boiler feedwater using the waste heat in boiler exhaust gas, by boiler into
The preheating of wind and boiler feedwater can be improved the thermal efficiency of boiler.In the utility model, dried by the way that boiler exhaust gas is passed through preheating
In dry storehouse, air preheater and feed water preheater, the waste heat of boiler exhaust gas can be efficiently used to preheat biomass, inlet air of boiler
And boiler feedwater, improve the integral combustion thermal efficiency.
The pre-heating drying storehouse, air preheater and feed water preheater arranged in series are in the boiler exhaust gas discharge-channel
On.
Pre-heating drying storehouse, air preheater and feed water preheater are disposed in series on boiler exhaust gas discharge-channel, it can
Realize the concentration discharge and centralized processing of boiler exhaust gas.
The pre-heating drying storehouse, air preheater and feed water preheater are sequentially arranged along the emission direction of boiler exhaust gas.
Pre-heating drying storehouse, air preheater and feed water preheater are arranged that boiler exhaust gas is to upper in a certain order
The material (including biomass and boiler air inlet) in one stage preheated after still there are more waste heat heat, will not influence down
The preheating in one stage (including boiler air inlet and boiler feedwater).
The end of the boiler exhaust gas discharge-channel is equipped with the deduster for being dusted to boiler exhaust gas.
Deduster is arranged in the end of boiler exhaust gas discharge-channel, dust excluder can be prevented preposition and cause to reduce boiler
The case where exhaust temperature, occurs.
The technical solution of the utility model generating power with biomass combustion system is: a kind of generating power with biomass combustion system, including
For generating the boiler and boiler exhaust gas processing unit of high-temperature steam, boiler exhaust gas processing unit includes the pot being connected with boiler
Furnace exhaust gas discharge-channel, boiler exhaust gas discharge-channel are equipped with for carrying out the pre- of pre-heating drying to the biomass in investment boiler
Hot warehouse for drying, the air preheater for being preheated to inlet air of boiler and the feed-water preheating for being preheated to boiler feedwater
Device.
The beneficial effects of the utility model are: in use, pre-heating drying storehouse can be using the waste heat in boiler exhaust gas to throwing
The biomass entered in boiler carries out pre-heating drying, to reduce the moisture content in biomass, improves generating efficiency.Air preheater
Inlet air of boiler can be preheated using the waste heat in boiler exhaust gas, feed water preheater can utilize the waste heat in boiler exhaust gas
Boiler feedwater is preheated, by the preheating to inlet air of boiler and boiler feedwater, can be improved the thermal efficiency of boiler.This is practical
In novel, by the way that boiler exhaust gas to be passed through in pre-heating drying storehouse, air preheater and feed water preheater, boiler can be efficiently used
The waste heat of tail gas preheats biomass, inlet air of boiler and boiler feedwater, improves the integral combustion thermal efficiency.For entire biomass fuel
For burning electricity generation system, the overall power of generating power with biomass combustion system is reduced.
The pre-heating drying storehouse, air preheater and feed water preheater arranged in series are in the boiler exhaust gas discharge-channel
On.
The pre-heating drying storehouse, air preheater and feed water preheater are sequentially arranged along the emission direction of boiler exhaust gas.
The end of the boiler exhaust gas discharge-channel is equipped with the deduster for being dusted to boiler exhaust gas.
Detailed description of the invention
Fig. 1 is the process for using figure of the utility model boiler exhaust gas processing unit.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment of the boiler exhaust gas processing unit of the utility model, as shown in Figure 1, boiler exhaust gas processing unit is answered
For in generating power with biomass combustion system, generating power with biomass combustion system includes boiler, and boiler passes through in furnace chamber inner combustion biology
Matter can heat boiler feedwater, generate the steam with certain temperature and pressure, and steam drives steam turbine acting power generation.
Generating power with biomass combustion system further include be connected with boiler and into boiler supply biomass pre-heating drying storehouse, with
Boiler is connected and is passed through the air preheater of boiler air inlet into boiler, is connected with boiler and is passed through tap water (pot into boiler
Furnace water supply) feed water preheater.
In the present embodiment, boiler exhaust gas discharge-channel is connected on boiler, cloth of connecting on boiler exhaust gas discharge-channel
It is equipped with above-mentioned pre-heating drying storehouse, air preheater and feed water preheater, the waste heat in boiler exhaust gas generated after boiler combustion
Pre-heating drying can be carried out to the biomass (such as stalk, bagasse) in pre-heating drying storehouse, reduce the water content in biomass, pot
Waste heat in furnace exhaust gas can convection current through the boiler air inlet of air preheater carry out pre-heating temperature elevation, to the pot for flowing through feed water preheater
Furnace water supply carries out pre-heating temperature elevation.Deduster is set in the end of boiler exhaust gas discharge-channel, wet dedusting is carried out to boiler exhaust gas.
The utility model use process is as follows: boiler generates 140 °C of boiler exhaust gas after combustion, and boiler exhaust gas is successively
By four-stage.
After 1:20 °C of stage of biomass is marched into the arena, it is delivered in pre-heating drying storehouse by conveyer, it is pre- by boiler exhaust gas
After heat C in 90 °, it is discharged and send to boiler furnace from outlet and burn；And boiler exhaust gas is delivered to preheating from boiler tail
In warehouse for drying, 80 °C are cooled to after carrying out heat exchange with biomass, and be discharged from the air outlet in pre-heating drying storehouse；
Stage 2: flowing through air preheater by 80 °C of the boiler exhaust gas that pre-heating drying storehouse is discharged, in entrance boiler
15 °C of boiler air inlet (air) carries out heat exchange, and boiler exhaust gas flows to feed water preheater, boiler air inlet liter after being cooled to 50 °C
Temperature enters in boiler furnace to after 65 °C；
Stage 3: boiler feedwater (oneself of 50 °C of the boiler exhaust gas of feed water preheater in feed water preheater with 15 °C is flowed to
Water) heat exchange is carried out, boiler exhaust gas is cooled to 20 °C, and boiler feedwater is passed through in boiler after being warming up to 25 °C.In this stage
The condensed water that boiler exhaust gas cooling generates can be collected to condensed water collecting box, be discharged through in medicine system and after up to standard.
In stage 2 and stage 3, boiler air inlet and boiler feedwater absorb most of sensible heat and vapor in boiler exhaust gas
The latent heat of vaporization.
Stage 4: wet dedusting is carried out to 20 °C of boiler exhaust gas, wet dedusting is not only able to the discharge of boiler exhaust gas is dense
Degree reduces, and can also be used as desulfurization process by increasing additive in the recirculated water of wet dedusting, thus realize zero-emission,
The boiler exhaust gas of treated qualification is by smoke stack emission into atmosphere.
In the utility model, by making boiler exhaust gas pass sequentially through pre-heating drying storehouse, air preheater and feed water preheater,
On the one hand, it can reduce the temperature of boiler exhaust gas, convenient for carrying out the purification such as subsequent dedusting to boiler exhaust gas；On the other hand, energy
Waste heat present in boiler exhaust gas is enough efficiently used, biomass, inlet air of boiler and boiler feedwater are effectively preheated and risen
Temperature reduces the water content of biomass, and efficiency of combustion is higher, preheats to inlet air of boiler, reduces heating kettle in combustion process
Furnace air inlet heat, boiler feedwater is preheated, the temperature into the boiler feedwater in boiler is improved, reduce boiler to
Water needs the temperature value improved.In conclusion boiler exhaust gas is used as preheating, the integral combustion efficiency of boiler can be improved, drop
The overall power of low electricity generation system.
In the utility model, pre-heating drying storehouse, air preheater and feed water preheater are disposed in series in boiler exhaust gas row
It puts on channel, facilitates installation.Moreover, by pre-heating drying storehouse, air preheater and feed water preheater along the flowing side of boiler exhaust gas
It, can still there are more after preheating to material (including biomass and boiler air inlet) on last stage to being sequentially arranged
Waste heat heat, will not influence the preheating of next stage (including boiler air inlet and boiler feedwater).
In the present embodiment, pre-heating drying storehouse, air preheater and feed water preheater are sequentially connected in series arrangement, if by between three
Sequence upset resetting also within the scope of protection of this application.In addition, in other embodiments, it can be by three's parallel connection cloth
It sets, the quantity of boiler exhaust gas discharge-channel is to be separately connected corresponding preheating structure on three, three.In the present embodiment, preheating
Warehouse for drying, air preheater, feed water preheater, the deduster for wet dedusting and boiler exhaust gas discharge-channel collectively form
Boiler exhaust gas processing unit.
In other embodiments, the temperature of tail gas and the temperature of preheating are not limited to the numerical value in above-mentioned text.
The embodiment of the utility model generating power with biomass combustion system, generating power with biomass combustion system include boiler, boiler
Exhaust gas processing device and steam-driven generator, wherein it is consistent in the structure and above-described embodiment of boiler exhaust gas processing unit,
Content repeats no more.
Claims (8)
1. a kind of boiler exhaust gas processing unit, including the boiler exhaust gas discharge-channel for being connected with boiler, it is characterised in that: pot
Furnace exhaust gas discharge-channel is equipped with for carrying out the pre-heating drying storehouse of pre-heating drying, for pot to the biomass in investment boiler
The air preheater that furnace air inlet is preheated and the feed water preheater for being preheated to boiler feedwater.
2. boiler exhaust gas processing unit according to claim 1, it is characterised in that: the pre-heating drying storehouse, air preheat
Device and feed water preheater arranged in series are on the boiler exhaust gas discharge-channel.
3. boiler exhaust gas processing unit according to claim 2, it is characterised in that: the pre-heating drying storehouse, air preheat
Device and feed water preheater are sequentially arranged along the emission direction of boiler exhaust gas.
4. boiler exhaust gas processing unit according to claim 1 or 2 or 3, it is characterised in that: the boiler exhaust gas discharge is logical
The end in road is equipped with the deduster for being dusted to boiler exhaust gas.
5. a kind of generating power with biomass combustion system, including the boiler and boiler exhaust gas processing unit for generating high-temperature steam,
Boiler exhaust gas processing unit includes the boiler exhaust gas discharge-channel being connected with boiler, it is characterised in that: boiler exhaust gas discharge-channel
It is equipped with for carrying out the pre-heating drying storehouse of pre-heating drying, for preheating to inlet air of boiler to the biomass in investment boiler
Air preheater and feed water preheater for being preheated to boiler feedwater.
6. generating power with biomass combustion system according to claim 5, it is characterised in that: the pre-heating drying storehouse, air are pre-
Hot device and feed water preheater arranged in series are on the boiler exhaust gas discharge-channel.
7. generating power with biomass combustion system according to claim 6, it is characterised in that: the pre-heating drying storehouse, air are pre-
Hot device and feed water preheater are sequentially arranged along the emission direction of boiler exhaust gas.
8. according to generating power with biomass combustion system described in claim 5 or 6 or 7, it is characterised in that: the boiler exhaust gas discharge
The end in channel is equipped with the deduster for being dusted to boiler exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820992256.9U CN208457938U (en) | 2018-06-26 | 2018-06-26 | Generating power with biomass combustion system and its boiler exhaust gas processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820992256.9U CN208457938U (en) | 2018-06-26 | 2018-06-26 | Generating power with biomass combustion system and its boiler exhaust gas processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208457938U true CN208457938U (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820992256.9U Active CN208457938U (en) | 2018-06-26 | 2018-06-26 | Generating power with biomass combustion system and its boiler exhaust gas processing unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626714A (en) * | 2018-06-26 | 2018-10-09 | 河南省德耀节能科技股份有限公司 | A kind of generating power with biomass combustion system and its boiler exhaust gas processing unit |
-
2018
- 2018-06-26 CN CN201820992256.9U patent/CN208457938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626714A (en) * | 2018-06-26 | 2018-10-09 | 河南省德耀节能科技股份有限公司 | A kind of generating power with biomass combustion system and its boiler exhaust gas processing unit |
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