CN108506953A - It is a kind of to ensure flue gas ultra-clean exhaust system using boiler idle air - Google Patents
It is a kind of to ensure flue gas ultra-clean exhaust system using boiler idle air Download PDFInfo
- Publication number
- CN108506953A CN108506953A CN201810322166.3A CN201810322166A CN108506953A CN 108506953 A CN108506953 A CN 108506953A CN 201810322166 A CN201810322166 A CN 201810322166A CN 108506953 A CN108506953 A CN 108506953A
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- Prior art keywords
- boiler
- air
- idle air
- monitoring
- flue gas
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Classifications
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- 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
- F23J15/006—Layout of treatment plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
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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
Abstract
Ensureing flue gas ultra-clean exhaust system using boiler idle air present invention relates particularly to a kind of, it is made of idle air draw-out device, automatic idle air distributor, backward flowing preventing device, primary air fan, sulphur nitrogen pollutant on-Line Monitor Device, on-line metering device, oxygen amount device for monitoring and analyzing, coal-supplying amount regulation device, central data analysis process system, by the idle air for extracting 14% or so oxygen amount of boiler, reduction control is carried out to 21% or so boiler oxygen amount, boiler oxygen-enriched combusting is become into micro- oxygen debt burning, inhibits or reduce SO in combustion2、NOxGeneration, whole system carries out analytical integration by central data analysis process system, realize idle air, Combustion Operation of Boilers, oxygen amount, the fusion of the cloud platform of desulphurization denitration data, increasingly automated control, Air Pollutant Emission total amount is greatly reduced, it reduces environmental pollution, has effectively facilitated the low-carbon harmonious development of enterprise.
Description
Technical field
The invention belongs to boiler idle airs to utilize distribution system, and in particular to a kind of to ensure flue gas ultra-clean using boiler idle air
Exhaust system.
Background technology
The main technique that coal-burning boiler desulfurization is taken is wet desulphurization, double alkali method desulfurizing, semi-dry desulphurization, at present using most
More and technology maturation sulfur removal technology is wet desulphurization, at home to be widely used.Such technique mainly consumes a large amount of desulfurization
Agent lime stone and water resource are reacted by lime stone slurry with the sulphur in flue gas, by SO2Be converted to calcium sulfate and sulfurous acid
Calcium purifies purpose to reach flue gas desulfurization.
Denitration use technique be mainly SCR selective catalytic reductions, SNCR non-selective catalytic reductions, pass through to
A large amount of denitrfying agent such as 20% ammonium hydroxide or ammonias are sprayed into boiler smoke, are reacted with the nitrogen in flue gas, and N is generated2And H2O reaches
The effect of denitrating flue gas.
The above sulfur removal technology need to consume a large amount of limestone resource and water resource, and the high chloride ion generated in sweetening process is dirty
Water, need to carry out handling it is up to standard after discharged.Denitrating technique need to largely use ammonium hydroxide, while consume a large amount of water resource.It is such
Desulfurizing and denitrifying process Installed capital cost and operation cost are higher, take up a large area, high energy consumption, the construction period is long and consumes big
Non-renewable resources are measured, the sustainable development of national society is influenced.Coal-burning boiler SO2、NOxThe generation of equal pollutants is mainly being sent out
The raw combustion process in boiler, how in boiler combustion process, to SO2、NOxThe initial concentration of generation control effectively, from
The generation for inhibiting atmosphere pollution on source, reduces follow-up desulphurization and denitration technique to SO2、NOxTreating capacity, to reach lime stone
Resource and the mesh of water resources consumption reduction, residual product contamination reduction, the reduction of Construction and operation cost reduction, gross contamination emission
Mark is important topic of the pendulum in face of each enterprise.
Invention content
The shortcomings that purpose of the present invention is directed in the prior art and deficiency provide a kind of super using boiler idle air guarantee flue gas
Clean exhaust system, the present invention is in boiler combustion process to SO2、NOxTechnology that the initial concentration of generation control effectively and
Equipment carries out emission reduction, limitation in the source that atmosphere pollution generates.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
It is a kind of to ensure flue gas ultra-clean exhaust system, including the distribution of idle air draw-out device, automatic idle air using boiler idle air
The air inlet of device and primary air fan, the idle air draw-out device is connected to flue tail, extracting high-temperature idle air, and idle air extracts dress
The air outlet set is connected to by conveyance conduit with the air inlet of automatic idle air distributor, each outlet air of automatic idle air distributor
Mouth is connected to by conveyance conduit with the air inlet of each primary air fan, and the air outlet of each primary air fan is pre- with air by conveyance conduit
The air inlet of hot device is connected to, and the air outlet of air preheater is connected to each boiler furnace.
It is described to ensure that flue gas ultra-clean exhaust system further includes backward flowing preventing device using boiler idle air, the backward flowing preventing device
It is located in the connecting pipe of automatic idle air distributor and each primary air fan.
It is described to ensure that flue gas ultra-clean exhaust system further includes on-line metering device, oxygen amount monitoring analysis using boiler idle air
Device, coal amount regulation device, sulphur nitrogen pollutant on-Line Monitor Device and central data analysis process system, the on-line metering dress
Automatic idle air distributor is set in in the connecting pipe of each primary air fan, each boiler furnace is inputted for monitoring and controlling
Idle air inlet, oxygen amount device for monitoring and analyzing are located on boiler furnace, for monitoring oxygen amount in boiler furnace, coal amount regulation device
It is located on the coal feeding pipe line of each boiler, for adjusting and monitoring the coal input quantity into each boiler furnace, the sulphur nitrogen pollutant exists
Line monitoring device is located on the smoke discharging pipe of boiler, and the concentration of sulfureous in flue gas nitrogen pollutant is discharged for monitoring boiler, online to count
Device, oxygen amount device for monitoring and analyzing, coal amount regulation device and sulphur nitrogen pollutant on-Line Monitor Device is measured respectively to divide with central data
Processing system connection is analysed, central data analysis process system is for acquiring, analyzing and controlling on-line metering device, oxygen amount monitoring point
Analysis apparatus, coal amount regulation device and sulphur nitrogen pollutant on-Line Monitor Device.
The present invention reduces SO using boiler idle air2、NOxInitial concentration ensures flue gas ultra-clean exhaust system major technique road
Line SO in order to control2、NOxThe physical-chemical parameters and condition are generated, by extracting the idle air of 14% or so oxygen amount of boiler, to 21% left side
Right boiler oxygen amount carries out reduction control, and boiler oxygen-enriched combusting is become micro- oxygen debt burning, inhibits in combustion or reduces
SO2、NOxGeneration, system composition includes：Boiler cleaning high temperature idle air draw-out device, conveyance conduit, automatic idle air distribution dress
Set, backward flowing preventing device, primary air fan, sulphur nitrogen pollutant on-Line Monitor Device, on-line metering device, oxygen amount device for monitoring and analyzing,
The compositions such as coal-supplying amount regulation device, central data analysis process system.
Wherein boiler cleaning high temperature idle air draw-out device, conveyance conduit, on-line metering device, automatic idle air distributor,
Backward flowing preventing device is all made of heat resistant and wear resistant material manufacture, ensures that the cycle of operation reduces repair and maintenance workload.
The automatic idle air distributor, may be implemented on-line automatic adjustment, the idle air control adjusted into boiler combustion
Precision is greatly improved, and is not required to manual operation, ensure that the stability of system operation, reduces operating cost.
The sulphur nitrogen pollutant on-Line Monitor Device, on-line metering device, oxygen amount device for monitoring and analyzing, coal-supplying amount regulation and control dress
Set, desulphurization denitration linkage control system etc. carries out analytical integration by central data analysis process system, realize idle air, boiler combustion
Burn operating mode, oxygen amount, the fusion of the cloud platform of desulphurization denitration data, increasingly automated control.
Present system is adjusted Combustion Operation of Boilers using boiler idle air, boiler oxygen amount is accurately controlled, to SO2、
NOxThe formation condition of initial concentration control effectively or inhibits, the sulphur nitrogen pollutant on-Line Monitor Device, on-line metering dress
It sets, oxygen amount device for monitoring and analyzing, coal-supplying amount regulation device, desulphurization denitration linkage control system etc. are by central data analyzing processing
System carries out analytical integration, realizes idle air, Combustion Operation of Boilers, oxygen amount, the fusion of the cloud platform of desulphurization denitration data, highly automated
Change control.
In conclusion beneficial effects of the present invention are：
1) Combustion Operation of Boilers is adjusted by using idle air, reduces or inhibit the production quantity of flue gas pollutant；
2) boiler changes into micro- oxygen debt burning, SO by original oxygen-enriched combusting2, NOx initial concentrations on year-on-year basis reduce about 20%-
35%, reduce desulfurization denitrification agent and the consumption of water resource, reduces enterprise's desulphurization denitration operation cost；
3) Air Pollutant Emission total amount is greatly reduced, and reduces environmental pollution, and has effectively facilitated the low-carbon harmony hair of enterprise
Exhibition.
Description of the drawings
Fig. 1 is the flow chart schematic diagram of the present invention；
Fig. 2 is the schematic diagram of the present invention.
Specific implementation mode
As shown in Figure 1, a kind of utilization boiler idle air in the present embodiment ensures flue gas ultra-clean exhaust system, including idle air
Draw-out device 1,5, two on-line metering devices 4 of the backward flowing preventing device of primary air fan 2, two of automatic idle air distributor 3, two,
Two oxygen amount device for monitoring and analyzing, 6, two coal amount regulation devices 7, sulphur nitrogen pollutant on-Line Monitor Device 8 and central data analysis
The air inlet of processing system 9, the idle air draw-out device 1 is connected to flue tail, extracting high-temperature idle air, idle air draw-out device 1
Air outlet be connected to the air inlet of automatic idle air distributor 3 by conveyance conduit, two of automatic idle air distributor 3 go out
Air port is connected to the air inlet of two primary air fans 2 respectively by conveyance conduit, and the air outlet of two primary air fans 2 passes through conveying
Pipeline is connected to the air inlet of two air preheaters 10, the air outlets of two air preheaters 10 respectively with two boiler furnaces
11 connections；Described two backward flowing preventing devices 5 are respectively provided at the connecting pipe of automatic idle air distributor 3 and two primary air fans 2
On；Described two on-line metering devices 4 are located in the connecting pipe of automatic idle air distributor 3 and two primary air fans 2, are used for
Monitoring and control input the idle air inlet of each boiler furnace 11, and two oxygen amount device for monitoring and analyzing 6 are respectively provided at two boilers
On burner hearth, for monitoring oxygen amount in boiler furnace, two coal amount regulation devices 7 are respectively provided on the coal feeding pipe line of two boilers,
For adjusting and monitoring the coal input quantity into each boiler furnace 11, the sulphur nitrogen pollutant on-Line Monitor Device 8 is located at boiler
On smoke discharging pipe, the concentration of sulfureous in flue gas nitrogen pollutant, two on-line metering devices, 4, two oxygen amount are discharged for monitoring boiler
6, two coal amount regulation devices 7 of device for monitoring and analyzing and sulphur nitrogen pollutant on-Line Monitor Device 8 respectively at central data analysis
Reason system 9 connect, central data analysis process system 9 for acquire, analyze and two control on-line metering 4, two oxygen of device
Measure 6, two coal amount regulation devices 7 of device for monitoring and analyzing and sulphur nitrogen pollutant on-Line Monitor Device 8.
As shown in Fig. 2, the lower idle air of oxygen amount is drawn into conveyance conduit by idle air draw-out device 1 in flue tail
In, idle air draw-out device 1 and conveyance conduit are manufactured using high temperature resistant, wear-resistant material, idle air enter automatic idle air distributor 3 into
Row distributes, and idle air sucks boiler primary air fan 2 by conveyance conduit later, enters after being heated by boiler air preheater 10
Boiler carries out air distribution combustion；Online metering device 4 is installed between automatic idle air distributor 3 and primary air fan 2 as automatic
It measures, the data foundation of distribution idle air；On-line metering device 4, oxygen amount monitoring are analyzed by central data analysis process system 9
Device 6, coal-supplying amount regulation device 7, sulphur nitrogen pollutant on-Line Monitor Device 8 carry out chain adjust automatically control.
Claims (3)
1. a kind of ensureing flue gas ultra-clean exhaust system using boiler idle air, it is characterised in that：Including idle air draw-out device (1),
Automatic idle air distributor (3) and primary air fan (2), the air inlet of the idle air draw-out device (1) are connected to flue tail, are taken out
High temperature idle air, the air outlet of idle air draw-out device (1) is taken to connect by conveyance conduit and the air inlet of automatic idle air distributor (3)
Logical, each air outlet of automatic idle air distributor (3) is connected to by conveyance conduit with the air inlet of each primary air fan (2), and each one
The air outlet of secondary wind turbine (2) is connected to by conveyance conduit with the air inlet of air preheater (10), and air preheater (10) go out
Air port is connected to each boiler furnace (11).
2. a kind of utilization boiler idle air according to claim 1 ensures flue gas ultra-clean exhaust system, it is characterised in that：Institute
It states and ensures that flue gas ultra-clean exhaust system further includes backward flowing preventing device (5) using boiler idle air, the backward flowing preventing device (5) is located at
In the connecting pipe of automatic idle air distributor (3) and each primary air fan (2).
3. according to claim 1 or 2 a kind of using boiler idle air guarantee flue gas ultra-clean exhaust system, feature exists
In：It is described to ensure that flue gas ultra-clean exhaust system further includes on-line metering device (4), oxygen amount monitoring analysis dress using boiler idle air
(6), coal amount regulation device (7), sulphur nitrogen pollutant on-Line Monitor Device (8) and central data analysis process system (9) are set, it is described
On-line metering device (4) is located in the connecting pipe of automatic idle air distributor (3) and each primary air fan (2), for monitoring and
Control inputs the idle air inlet of each boiler furnace (11), and oxygen amount device for monitoring and analyzing (6) is located on boiler furnace, for monitoring
Oxygen amount in boiler furnace, coal amount regulation device (7) are located on the coal feeding pipe line of each boiler, for adjusting and monitoring into each boiler
The coal input quantity of burner hearth (11), the sulphur nitrogen pollutant on-Line Monitor Device (8) is located on the smoke discharging pipe of boiler, for monitoring pot
Fire grate goes out the concentration of sulfureous in flue gas nitrogen pollutant, on-line metering device (4), oxygen amount device for monitoring and analyzing (6), coal amount regulation device
(7) it is connect respectively with central data analysis process system (9) with sulphur nitrogen pollutant on-Line Monitor Device (8), central data analysis
Processing system (9) is for acquiring, analyzing and controlling on-line metering device (4), oxygen amount device for monitoring and analyzing (6), coal amount regulation and control dress
Set (7) and sulphur nitrogen pollutant on-Line Monitor Device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322166.3A CN108506953A (en) | 2018-04-11 | 2018-04-11 | It is a kind of to ensure flue gas ultra-clean exhaust system using boiler idle air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322166.3A CN108506953A (en) | 2018-04-11 | 2018-04-11 | It is a kind of to ensure flue gas ultra-clean exhaust system using boiler idle air |
Publications (1)
| Publication Number | Publication Date |
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| CN108506953A true CN108506953A (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810322166.3A Pending CN108506953A (en) | 2018-04-11 | 2018-04-11 | It is a kind of to ensure flue gas ultra-clean exhaust system using boiler idle air |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203223912U (en) * | 2013-04-15 | 2013-10-02 | 黄立新 | Intermediate storage type super nitrogen reduction system for coal-fired boiler coal mill |
| CN103574630A (en) * | 2012-07-19 | 2014-02-12 | 中国电力工程顾问集团华东电力设计院 | Method for improving temperature of smoke discharged by chimney of thermal power plant, smoke heating system and thermal power generation unit |
| CN104533818A (en) * | 2014-12-22 | 2015-04-22 | 大唐贵州发耳发电有限公司 | Automatic balance adjusting control system of parallel draught fans |
| CN205447811U (en) * | 2015-12-30 | 2016-08-10 | 中国神华能源股份有限公司 | Boiler is mixed and is burnt ventilation air methane stable combustion control system |
| CN208108145U (en) * | 2018-04-11 | 2018-11-16 | 山西沁新能源集团股份有限公司 | It is a kind of to guarantee flue gas ultra-clean exhaust system using boiler idle air |
-
2018
- 2018-04-11 CN CN201810322166.3A patent/CN108506953A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574630A (en) * | 2012-07-19 | 2014-02-12 | 中国电力工程顾问集团华东电力设计院 | Method for improving temperature of smoke discharged by chimney of thermal power plant, smoke heating system and thermal power generation unit |
| CN203223912U (en) * | 2013-04-15 | 2013-10-02 | 黄立新 | Intermediate storage type super nitrogen reduction system for coal-fired boiler coal mill |
| CN104533818A (en) * | 2014-12-22 | 2015-04-22 | 大唐贵州发耳发电有限公司 | Automatic balance adjusting control system of parallel draught fans |
| CN205447811U (en) * | 2015-12-30 | 2016-08-10 | 中国神华能源股份有限公司 | Boiler is mixed and is burnt ventilation air methane stable combustion control system |
| CN208108145U (en) * | 2018-04-11 | 2018-11-16 | 山西沁新能源集团股份有限公司 | It is a kind of to guarantee flue gas ultra-clean exhaust system using boiler idle air |
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