CN107854940A - A kind of more unit thermal power generation flue gas pollutant joint removing means of underload - Google Patents
A kind of more unit thermal power generation flue gas pollutant joint removing means of underload Download PDFInfo
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- CN107854940A CN107854940A CN201711060820.XA CN201711060820A CN107854940A CN 107854940 A CN107854940 A CN 107854940A CN 201711060820 A CN201711060820 A CN 201711060820A CN 107854940 A CN107854940 A CN 107854940A
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- electric
- baffle
- door
- complex dust
- bag complex
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chimneys And Flues (AREA)
Abstract
A kind of more unit thermal power generation flue gas pollutant joint removing means of underload, including two air preheaters and two electric-bag complex dust collectors, thermal power generation, which is produced after flue gas is pre-processed by air preheater, enters electric-bag complex dust collector, also include flue header, flue header is arranged between air preheater and electric-bag complex dust collector, the inlet end of air preheater exhaust end and electric-bag complex dust collector is connected by pipeline with flue header, first baffle door is provided with the inlet end pipeline of electric-bag complex dust collector, two second baffle doors are provided with flue header between two electric-bag complex dust collectors, and two external enclosed air system of second baffle door.According to the live load of electric-bag complex dust collector, control the opening and closing of first baffle and second baffle, so as to flexible modulation control exhaust gas volumn, realize and only open a set of smoke gas treatment system in running on the lower load, can solve the problems, such as that electric-bag complex dust collector is chronically at low load condition operation and power-equipment is lost, effectively reduce treatment cost.
Description
Technical field
The present invention relates to thermal power generation field of fume treatment equipment, espespecially a kind of more unit thermal power generation flue gases of underload
Pollutant combined removal device and its technique.
Background technology
As the fast development of power construction and relation between supply and demand tend to balance, fired power generating unit is declined year by year using hourage,
Unit is chronically at " non-economy loading zone " operation of underload.Under underrun state, subsidiary engine leads to if do not changed rotating speed
When overregulating the aperture of valve or air door to change the flow and pressure of cross-sectional flow area acquisition needs, due to Pumps ＆ Fans efficiency
Significantly reduce, actual motion changed power is little, and therefore, general subsidiary engine consumption rate has raised under underload.It is and existing
The pattern that is generated electricity simultaneously using two fired power generating units mostly of thermal power plant, still open more set flue gases in low- load conditions
Governing system, the mode for being adjusted merely by flow and pressure adjust operating mode, and smoke gas treatment cost is high.
China's electric power has stepped into the relative surplus phase at present, although degree of excess and duration business are to be seen, when this it
When, the opportune time of power industry structural adjustment is exactly promoted, this opportunity should be caught, eliminated the backward production facilities, promotes industry liter
Level.In the case where power plant will appear from the condition background of underload longtime running, for more units, how underload Effec-tive Function is opened
Exhibition research is of practical significance.
The content of the invention
To solve the above problems, the present invention provides a kind of more unit thermal power generation flue gas pollutant joint removings of underload
Device and its technique, solve the problems, such as that smoke gas treatment system is chronically at low load condition operation and power-equipment is lost, significantly
Reduce processing cost.
To achieve the above object, the technical solution adopted by the present invention is：A kind of more unit thermal power generation flue gases of underload
Pollutant combined removal device, including two fired power generating units, two air preheaters and two electric-bag complex dust collectors, two fired power generating units fire
Power generating produces flue gas and pre-processed respectively by corresponding air preheater, wherein also include flue header, the flue connection
Case is arranged between two air preheaters and two electric-bag complex dust collectors, the air inlet of air preheater exhaust end and electric-bag complex dust collector
End is connected by pipeline with flue header, wherein being provided with first baffle at the inlet end pipeline of two electric-bag complex dust collectors
Door, is provided with two second baffle doors in flue header, two second baffle doors between two electric-bag complex dust collectors and
External enclosed air system.
Specifically, in addition to control system, the first baffle door and second baffle door are electric guard board door, the control
System processed is connected with first baffle door and second baffle gate control.
To achieve the above object, the technical solution adopted by the present invention is：A kind of multigroup thermal power generation smoke pollution of underload
Thing combined removal technique, comprises the following steps：
A. flue gas caused by thermal power generation is pre-processed by air preheater；
B. pretreated flue gas enters flue header；
C. according to the operating load of electric-bag complex dust collector, the folding of the first plate washer door and second baffle door is controlled；When two
Operating load is all higher than 110% or equal to 50% to electric-bag complex dust collector simultaneously, then opens the first plate washer door, close two second gears
Plate door, sealing air are opened；It is 100% when only having the operation of a wherein electric-bag complex dust collector and load, then opens two second gears
Plate door, and close the first baffle door of another electric-bag complex dust collector.
Specifically, in step C, in addition to control system, and first baffle door and second baffle door are electronic plate washer door,
The folding of first baffle door and second baffle door is controlled by control system..
The beneficial effects of the present invention are：The present invention between two air preheaters and two electric-bag complex dust collectors by setting
Flue header is equipped with, while first baffle door is set in two electric-bag complex dust collector inlet ends and sets two on flue header
Individual second baffle door and external enclosed air system, according to the live load of two fired power generating units, control first baffle and second baffle
Opening and closing, so as to flexible modulation control exhaust gas volumn, realize and only open a set of smoke gas treatment system in running on the lower load, can solve
The problem of fired power generating unit is chronically at low load condition operation and power-equipment is lost, effectively reduces treatment cost.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Below by specific embodiment, the invention will be further described.
Refer to shown in Fig. 1, the present invention is on a kind of more unit thermal power generation flue gas pollutant joint removings of underload
Device, including two fired power generating units, two air preheaters 1 and two electric-bag complex dust collectors 2, two fired power generating unit thermal power generation produce cigarette
Qi leel is not pre-processed by corresponding air preheater 1, wherein also including flue header 3, the flue header 3 is arranged on two
Between platform air preheater 1 and two electric-bag complex dust collectors 2, the inlet end of the exhaust end of air preheater 1 and electric-bag complex dust collector 2 passes through
Pipeline is connected with flue header 3, wherein first baffle door 21 is provided with the inlet end pipeline of two electric-bag complex dust collectors 2,
Two second baffle doors 31 are provided with flue header 3, two second baffle doors 31 are between two electric-bag complex dust collectors 2
And external enclosed air system 4.In the present embodiment, the plate washer door 31 of first baffle door 21 and second is electric guard board door, is passed through
The folding of control system controlling baffle plate.
The concrete technology flow process of the present embodiment is as follows：
S1. flue gas caused by thermal power generation is cooled by air preheater；
S2. the flue gas after cooling enters flue header；
S3. according to the operating load of fired power generating unit, the folding of the first plate washer door and second baffle door is controlled；
S31. when two fired power generating units are run and total load is more than 110% simultaneously, then open the first plate washer door, close two the
Two plate washer doors, sealing air are opened；
S32. when two fired power generating units simultaneously run and total load be less than 110%, then open two the second plate washer doors, and close
Any one electric-bag complex dust collector and its corresponding first baffle door.
For conventional power unit, while in 50% underrun, two sets of smoke gas treatment systems are opened, and use this special
Sharp scheme, only need to open a set of smoke gas treatment system can (form only opens unit 1, naturally it is also possible to only open unit 2),
It is as shown in the table to contrast energy consumption needed for both engineering operation routes：
From form：By the flue gas intercommunication of 2 electric-bag complex dust collectors, increase operational flexibility, station service can be saved,
Reduce the cost of equipment operation maintenance.According to generating electricity in two fired power generating unit years, hour presses 5500h, and cost of electricity-generating valency presses 0.217
Member/kW.h estimations (by 700 yuan/ton of net coal consumption rate 310g/kWh, mark coal coal price calculating), if two fired power generating units, which are pressed, is less than 50%
Load operation, only opens a set of smoke gas treatment unit, and two fired power generating units share a set of smoke gas treatment unit, save in year generate electricity into
This ten thousand yuan of ÷ 10000=187.4 of (5260-3690) × 5500 × 0.217.
When two fired power generating unit high load capacities or underrun, can mutually it be switched by first baffle door, second baffle door,
Therefore add the flexibility of operation.
Embodiment of above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row limits, on the premise of design spirit of the present invention is not departed from, technical side of this area ordinary skill technical staff to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (4)
1. a kind of more unit thermal power generation flue gas pollutant joint removing means of underload, including two fired power generating units, two skies
Pre- device and two electric-bag complex dust collectors, two fired power generating unit thermal power generation produce flue gas and carried out respectively by corresponding air preheater
Pretreatment, it is characterised in that also including flue header, the flue header is arranged on two air preheaters and two electric bags are compound removes
Between dirt device, the inlet end of air preheater exhaust end and electric-bag complex dust collector is connected by pipeline with flue header, wherein two
First baffle door is provided with the inlet end pipeline of electric-bag complex dust collector, two second baffle doors are provided with flue header,
Two second baffle doors are located between two electric-bag complex dust collectors and external enclosed air system.
2. the multigroup thermal power generation flue gas pollutant joint removing means of underload according to claim 1, it is characterised in that
Also include control system, the first baffle door and second baffle door are electric guard board door, the control system and first gear
Plate door connects with second baffle gate control.
3. a kind of removing process according to claim 1 removing means, it is characterised in that comprise the following steps：
A. flue gas caused by thermal power generation is pre-processed by air preheater；
B. pretreated flue gas enters flue header；
C. according to the operating load of fired power generating unit, the folding of the first plate washer door and second baffle door is controlled；When two fired power generating units are same
Shi Yunhang and load are all higher than 110%, then open the first plate washer door, close two the second plate washer doors, and sealing air is opened；When two fire
Group of motors is run simultaneously and total load is less than 110%, then opens two the second plate washer doors, and closes that any one electric bag is compound removes
Dirt device and its corresponding first baffle door.
4. the multigroup thermal power generation flue gas pollutant combined removal technique of underload according to claim 3, it is characterised in that
In step C, in addition to control system, and first baffle door and second baffle door are electronic plate washer door, pass through control system control
The folding of first baffle door and second baffle door processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060820.XA CN107854940A (en) | 2017-11-02 | 2017-11-02 | A kind of more unit thermal power generation flue gas pollutant joint removing means of underload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060820.XA CN107854940A (en) | 2017-11-02 | 2017-11-02 | A kind of more unit thermal power generation flue gas pollutant joint removing means of underload |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107854940A true CN107854940A (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711060820.XA Pending CN107854940A (en) | 2017-11-02 | 2017-11-02 | A kind of more unit thermal power generation flue gas pollutant joint removing means of underload |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203375464U (en) * | 2013-05-31 | 2014-01-01 | 广东电网公司电力科学研究院 | Linkage type air induction device in thermal power plant desulfurization smoke system |
| CN204438164U (en) * | 2015-01-27 | 2015-07-01 | 河北省电力勘测设计研究院 | Based on the boiler controller system flue control device of single air-introduced machine |
| CN205014397U (en) * | 2015-09-28 | 2016-02-03 | 杨青山 | A multicomputer intercommunication system for improving economic nature of power plant's environmental protection reduction of discharging facility |
| CN105402749A (en) * | 2015-12-17 | 2016-03-16 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue gas outlet structure of air pre-heater of one million-level pi-shaped boiler and one million-level coal-fired unit |
-
2017
- 2017-11-02 CN CN201711060820.XA patent/CN107854940A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203375464U (en) * | 2013-05-31 | 2014-01-01 | 广东电网公司电力科学研究院 | Linkage type air induction device in thermal power plant desulfurization smoke system |
| CN204438164U (en) * | 2015-01-27 | 2015-07-01 | 河北省电力勘测设计研究院 | Based on the boiler controller system flue control device of single air-introduced machine |
| CN205014397U (en) * | 2015-09-28 | 2016-02-03 | 杨青山 | A multicomputer intercommunication system for improving economic nature of power plant's environmental protection reduction of discharging facility |
| CN105402749A (en) * | 2015-12-17 | 2016-03-16 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue gas outlet structure of air pre-heater of one million-level pi-shaped boiler and one million-level coal-fired unit |
Non-Patent Citations (1)
| Title |
|---|
| 周至祥等: "《火电厂湿法烟气脱硫技术手册》", 30 June 2006, 中国电力出版社 * |
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