CN108343983A - Eliminate the device of chimney white plume - Google Patents
Eliminate the device of chimney white plume Download PDFInfo
- Publication number
- CN108343983A CN108343983A CN201710055153.XA CN201710055153A CN108343983A CN 108343983 A CN108343983 A CN 108343983A CN 201710055153 A CN201710055153 A CN 201710055153A CN 108343983 A CN108343983 A CN 108343983A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- flue
- gas
- heat
- desulfurizing 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The present invention is a kind of device for eliminating chimney white plume, flue-gas-cooling system and flue gas heating system are set gradually in desulfurizing tower outlet, it the heat of flue gas and is sent to Secondary Air pipeline and primary air duct after flue-gas-cooling system Absorption Desulfurization, it high-temperature flue gas heat and send to flue-gas-cooling system flue gas after cooling before flue gas heating system Absorption Desulfurization and makes its heating, condensed water is precipitated by first cooled flue gas in the present invention, reduce wet flue gas specific heat, institute's calorific requirement of heating flue gas is reduced afterwards, and then white plume is effectively eliminated, while reduction of consuming energy, flexibility height, energy conservation and environmental protection.
Description
Technical field
The invention belongs to energy-saving and emission-reduction fields, are related to a kind of device and technology of zero energy consumption elimination chimney white plume.
Background technology
China's coal fired power plant mostly uses greatly Limestone-gypsum Wet Flue Gas Desulfurization Process technique at present, and the flue gas after desulfurization would generally reach
To saturation state, temperature is reduced to 45 DEG C~55 DEG C, past after such saturation wet flue gas discharge chimney enters the lower air of temperature
Toward droplet can be condensed into, formed " white plume ", especially in winter, " white plume " phenomenon is more obvious.Although " white cigarette
Plumage ", without influence, but is extremely easy to be mistaken as pernicious gas to be discharged into air on environmental quality, causes the environment " on sense organ " dirty
Dye.Therefore, the improvement of " white plume " becomes the important topic of coal fired power plant reducing energy consumption.
According to hythergraph, under 20 DEG C, the atmospheric environment of relative humidity 60%, 50 DEG C of wet flue gas is required heat to
57 DEG C can eliminate " white plume ", and under 10 DEG C, the atmospheric environment of relative humidity 60%, 50 DEG C of wet flue gas are needed plus
Heat can be eliminated " white plume " to 71 DEG C, it is seen that environment temperature is lower, and it is bigger to eliminate " cost " that " white plume " is paid.
Flue gas is directly heated come there are three ways to eliminating " white plume " at present：1. heating flue gas using boiler hot air；2. using high
Flue gas after warm flue gas desulfurizing tower；3. heating flue gas in chimney bottom using fuel.And most of power plant is using high before desulfurization
The method of low-temperature flue gas is administered " white plume " after warm flue gas desulfurization, flue gas before tradition desulfurizing tower as shown in Figure 1
The system diagram of flue gas after heating desulfurizing tower, is reached by the way that Smoke-heating device is arranged in desulfurizing tower exhaust pass to flue gas
Purpose, but for using desulfurizing tower as the system of therrmodynamic system boundary, either which kind of method is energy consumption, heats flue gas
Heat be denoted as Q0。
Invention content
Technical problem solved by the invention is that a kind of zero energy consumption and can effectively eliminate the dress of chimney white plume providing
It sets.
The technology used in the present invention means are as follows.
A kind of device for eliminating chimney white plume, flue gas system is provided on the flue of desulfurizing tower outlet
It unites, flue-gas-cooling system is set on the flue between the desulfurizing tower and flue gas heating system.
Flue-gas-cooling system includes the gas cooler being set on desulfurizing tower exhaust pass, is connected to the gas cooler
The first exchanger, the two forms complete cooling circuit, which carries out heat exchange, Absorption Desulfurization with flue
The heat of flue gas afterwards, the first exchanger carry out heat exchange with Secondary Air pipeline and/or primary air fan pipeline, discharge flue gas after desulfurization
Heat.
Condensed-water recovering device is set on the flue at gas cooler.
Flue gas heating system includes the second exchanger being set on desulfurizing tower gas approach, is set to desulfurizing tower outlet cigarette
Flue gas heater on road, the two form heating circuit, which carries out heat exchange with flue before desulfurization, absorbs
The heat of flue gas before desulfurization, the flue gas heater and flue gas after desulfurization pipeline heat exchange, discharge the heat delayed before desulfurization.
Liquid medium is used in flue gas circuit and flue gas cooling circuit, and water pump is respectively provided on circuit.
It is had the beneficial effect that caused by the present invention.
1. flue gas, which cools, is precipitated the heat of condensed water release（Send therrmodynamic system back to）With the heat of heating flue gas（Heating power
System is taken out）When equal, zero energy consumption of therrmodynamic system is realized to eliminate " white plume ".
2. condensing out part water since saturation wet flue gas first cools down, wet flue gas specific heat reduces, and needs to eliminate " white cigarette
Plumage " and heat flue gas temperature lifting it is low, even if flue gas cool be precipitated condensed water release heat do not utilized by therrmodynamic system,
Opposite traditional technology is still energy-efficient.
It is comprehensively utilized 3. the condensed water for the saturation wet flue gas cooling precipitation that desulfurizing tower comes out is recyclable.
4. system flexibility higher, user can decide whether to the flue gas after first cooling down again add according to atmospheric conditions
Heat, i.e., it is higher in environment temperature and when flue gas not will produce apparent " white plume " after cooling down, can be not required to carry out again flue gas
Heating, such Q2=0 improves the thermal efficiency；And when the temperature of the surroundings is low, flue gas is reheated, it is ensured that do not generate " white cigarette
Plumage ".
Description of the drawings
Fig. 1 is the system diagram of flue gas after flue gas desulfurizing tower before tradition desulfurizing tower.
Fig. 2 is the system schematic of the present invention.
Specific implementation mode
The present invention protect it is a kind of applied to coal fired power plant, can zero energy consumption eliminate chimney white plume device.
Existing structure figure as shown in Figure 1, the flue gas that burning generates in burner hearth 1 in coal fired power plant pass through again by SCR2 denitrations
After crossing the cooling of air preheater 3, desulfurizing tower 5 is entered after deduster 4, has flue gas heating system, i.e. desulfurizing tower before and after desulfurizing tower 5
The second exchanger 62 is set on gas approach, flue gas heater 61 is set on exhaust pass, and the two forms heating circuit 63.Second exchanges
Device 62 for flue before 5 entrance of desulfurizing tower by and carry out heat exchange, absorb the heat Q0 of flue gas, flue gas heater 61 is for cigarette
Flue after Gas Cooler 81 by and carry out heat exchange, discharge the heat Q0 of flue gas to flue gas after desulfurization.
The present invention's focuses on, and it is cold to be provided with flue gas on the flue between the outlet of desulfurizing tower 5 and flue gas heating system
But system.
The flue-gas-cooling system includes the gas cooler 81 being set on 5 exhaust pass of desulfurizing tower, and communicate therewith
First exchanger 82, the two form complete cooling circuit 83, the gas cooler 81 for flue by and carry out hot friendship
Change, absorb the heat Q1 of flue gas, the first exchanger 82 for air supply pipeline and primary air fan pipeline by and carry out heat exchange, discharge
For the heat Q1 of flue gas to air supply pipeline and primary air duct, heat returns to therrmodynamic system with cold wind.
As shown in Fig. 2, flue gas heating system is identical as existing Fig. 1 structures, i.e., flue gas heater 61 and communicate therewith
Second exchanger 62, the two form heating circuit 63.Second exchanger 62 for flue before 5 entrance of desulfurizing tower by and carry out
Heat exchange, absorbs the heat Q2 of flue gas, flue gas heater 61 for the flue after gas cooler 81 by and carry out hot friendship
It changes, discharges the heat Q2 of flue gas.
Condensed-water recovering device can be set on the flue at gas cooler（It is not shown in figure）, realize recycling condensed water
It recycles, existing structure can be used according to actual use demand, do not limited specifically herein.
Existing liquid medium is all made of in flue gas circuit and flue gas cooling circuit, be respectively provided on circuit water pump to
Power is provided.
According to above structure, zero energy consumption may be implemented and eliminate chimney " white plume " phenomenon.
Specifically, the flue gas that desulfurizing tower 5 comes out first passes through the cooling of gas cooler 81, and the cigarette after condensed water is precipitated in cooling
Gas is discharged after heating up using flue gas heater 61 from chimney 7.Flue gas cool be precipitated condensed water release heat Q1 give
The cold wind of boiler primary air fan, air blower inlet pipeline within the scope of therrmodynamic system, and the heat Q2 for heating flue gas comes from heating power
High-temperature flue gas in system scope before desulfurizing tower.
Compared to the technology that flue gas after traditional heating desulfurizing tower eliminates " white plume ", the present invention has significant advantage
And feature.
1. flue gas, which cools, is precipitated the heat Q1 of condensed water release（Send therrmodynamic system back to）With the heat Q2 of heating flue gas
（Therrmodynamic system is taken out）When equal, zero energy consumption of therrmodynamic system is realized to eliminate " white plume ".
2. condensing out part water since saturation wet flue gas first cools down, wet flue gas specific heat reduces, and needs to eliminate " white cigarette
Plumage " and heat flue gas temperature lifting it is low, that is, heat flue gas heat Q2 be less than traditional technology heating flue gas heat Q0, even if
Flue gas, which cools, to be precipitated the heat Q1 of condensed water release and is not utilized by therrmodynamic system, and opposite traditional technology is still energy-efficient.
It is comprehensively utilized 3. the condensed water for the saturation wet flue gas cooling precipitation that desulfurizing tower comes out is recyclable.
4. system flexibility higher, user can decide whether to the flue gas after first cooling down again add according to atmospheric conditions
Heat, i.e., it is higher in environment temperature and when flue gas not will produce apparent " white plume " after cooling down, can be not required to carry out again flue gas
Heating, such Q2=0 improves the thermal efficiency；And when the temperature of the surroundings is low, flue gas is reheated, it is ensured that do not generate " white cigarette
Plumage ".
Claims (5)
1. a kind of device for eliminating chimney white plume, in desulfurizing tower（5）Flue gas system is provided on the flue of outlet
System, which is characterized in that in desulfurizing tower（5）Flue-gas-cooling system is set on flue between flue gas heating system.
2. eliminating the device of chimney white plume as described in claim 1, which is characterized in that the flue-gas-cooling system includes
It is set to desulfurizing tower（5）Gas cooler on exhaust pass（81）And the gas cooler（81）First exchanger of connection
（82）, the two formation cooling circuit（83）, the gas cooler（81）Heat exchange is carried out with flue, flue gas after Absorption Desulfurization
Heat（Q1）, the first exchanger（82）Heat exchange is carried out with Secondary Air pipeline and/or primary air fan pipeline, discharges cigarette after desulfurization
The heat of gas（Q1）.
3. eliminating the device of chimney white plume as claimed in claim 2, which is characterized in that the flue at gas cooler
On set condensed-water recovering device.
4. the device of the elimination chimney white plume as described in claims 1 to 3 is any, which is characterized in that the flue gas
System includes to be set to desulfurizing tower（5）The second exchanger on gas approach（62）, be set to desulfurizing tower（5）On exhaust pass
Flue gas heater（61）, the two formation heating circuit（63）, second exchanger（62）Hot friendship is carried out with flue before desulfurization
It changes, the heat of flue gas before Absorption Desulfurization（Q2）, the flue gas heater（61）With flue gas after desulfurization pipeline heat exchange, discharge desulfurization before
The heat of flue gas（Q2）.
5. eliminating the device of chimney white plume as claimed in claim 4, which is characterized in that flue gas circuit and flue gas are cold
But liquid medium is used in circuit, and water pump is respectively provided on circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710055153.XA CN108343983A (en) | 2017-01-24 | 2017-01-24 | Eliminate the device of chimney white plume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710055153.XA CN108343983A (en) | 2017-01-24 | 2017-01-24 | Eliminate the device of chimney white plume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108343983A true CN108343983A (en) | 2018-07-31 |
Family
ID=62962978
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710055153.XA Pending CN108343983A (en) | 2017-01-24 | 2017-01-24 | Eliminate the device of chimney white plume |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722103A (en) * | 2018-08-02 | 2018-11-02 | 山东国舜建设集团有限公司 | A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization |
| CN108916901A (en) * | 2018-08-09 | 2018-11-30 | 西安热工研究院有限公司 | A kind of auto-controlled energy-saving type eliminates the device of plume |
| CN108926953A (en) * | 2018-09-27 | 2018-12-04 | 衢州佰强新材料科技有限公司 | One kind condensing again steam-heated white plume governing system based on fluorine plastic-steel |
| CN110145753A (en) * | 2019-05-30 | 2019-08-20 | 湖北华电襄阳发电有限公司 | Two-way Cycle afterheat utilizing system and its residual-heat utilization method |
| CN110822463A (en) * | 2018-08-10 | 2020-02-21 | 北京蓝亚能源科技有限公司 | Flue gas that condensation was reheated disappears white system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001029739A (en) * | 1999-07-16 | 2001-02-06 | Ishikawajima Harima Heavy Ind Co Ltd | Flue gas treating installation |
| CN101709879A (en) * | 2009-09-27 | 2010-05-19 | 西安交通大学 | System for deep cooling and waste heat recovery of smoke gas in boiler |
| CN201636884U (en) * | 2009-09-27 | 2010-11-17 | 西安交通大学 | Deep cooling and waste heat recovery device for boiler smoke gas |
| CN102759096A (en) * | 2012-07-24 | 2012-10-31 | 西安交通大学 | Smoke waste heat utilization system |
| CN206478668U (en) * | 2017-01-24 | 2017-09-08 | 中国电力工程顾问集团华北电力设计院有限公司 | Eliminate the device of the white plume of chimney |
-
2017
- 2017-01-24 CN CN201710055153.XA patent/CN108343983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001029739A (en) * | 1999-07-16 | 2001-02-06 | Ishikawajima Harima Heavy Ind Co Ltd | Flue gas treating installation |
| CN101709879A (en) * | 2009-09-27 | 2010-05-19 | 西安交通大学 | System for deep cooling and waste heat recovery of smoke gas in boiler |
| CN201636884U (en) * | 2009-09-27 | 2010-11-17 | 西安交通大学 | Deep cooling and waste heat recovery device for boiler smoke gas |
| CN102759096A (en) * | 2012-07-24 | 2012-10-31 | 西安交通大学 | Smoke waste heat utilization system |
| CN206478668U (en) * | 2017-01-24 | 2017-09-08 | 中国电力工程顾问集团华北电力设计院有限公司 | Eliminate the device of the white plume of chimney |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722103A (en) * | 2018-08-02 | 2018-11-02 | 山东国舜建设集团有限公司 | A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization |
| CN108916901A (en) * | 2018-08-09 | 2018-11-30 | 西安热工研究院有限公司 | A kind of auto-controlled energy-saving type eliminates the device of plume |
| CN110822463A (en) * | 2018-08-10 | 2020-02-21 | 北京蓝亚能源科技有限公司 | Flue gas that condensation was reheated disappears white system |
| CN108926953A (en) * | 2018-09-27 | 2018-12-04 | 衢州佰强新材料科技有限公司 | One kind condensing again steam-heated white plume governing system based on fluorine plastic-steel |
| CN110145753A (en) * | 2019-05-30 | 2019-08-20 | 湖北华电襄阳发电有限公司 | Two-way Cycle afterheat utilizing system and its residual-heat utilization method |
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