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CN108826265A - A kind of thermal power plant's environmental protection facility optimization operation control system - Google Patents

A kind of thermal power plant's environmental protection facility optimization operation control system Download PDF

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Publication number
CN108826265A
CN108826265A CN201810437245.9A CN201810437245A CN108826265A CN 108826265 A CN108826265 A CN 108826265A CN 201810437245 A CN201810437245 A CN 201810437245A CN 108826265 A CN108826265 A CN 108826265A
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decision
flue dust
environmental protection
controlled concentration
scr
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CN201810437245.9A
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CN108826265B (en
Inventor
李刚
武宝会
牛国平
李明皓
李帅英
薛大禹
成新兴
贾晓静
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrostatic Separation (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a kind of thermal power plant's environmental protection facilities to optimize operation control system, and the decision system includes for obtaining best furnace outlet NOx controlled concentration C according to boiler load ALTAnd SCR reactor outlet NOx controlled concentration CSCRNOx decision sub-circuit, for obtaining best electric precipitator according to boiler load A export flue dust controlled concentration DCCQ, desulfurizing tower export flue dust controlled concentration DTLAnd wet electrostatic precipitator outlet flue dust controlled concentration DCSFlue dust decision sub-circuit and export dust concentration E for obtaining best desulfurizing tower according to boiler load ATLSO2Decision sub-circuit, wherein, data collection system is connected with the input terminal of man-machine interactive system and decision system, decision system is connected with man-machine interactive system and control system, the system can guarantee each environmental protection equipment safe operation, while energy-saving purpose can be realized to the contribution rate of pollutant removing by distributing each environmental protection equipment.

Description

A kind of thermal power plant's environmental protection facility optimization operation control system
Technical field
The invention belongs to fired power generating unit environmental protection facilities to optimize operation automatic control technology field, be related to a kind of environmental protection of thermal power plant Facility optimizes operation control system.
Background technique
Combine and issue that " ring sends out [2015] No. 164 about printing and distributing according to National Development and Reform Committee, Environmental Protection Department, National Energy Board 《Implement in full coal-burning power plant's minimum discharge and reducing energy consumption programme of work》Notice " requirement, each power plant carried out cigarette successively Gas minimum discharge transformation.With the successive investment of each power plant's minimum discharge environmental transformation equipment, each environmental protection equipment design margin mistake Greatly, lacking the problem of effective coordinated control also gradually highlights, so as to cause constituent parts pollutant removing energy consumption occupy it is high not Under, influence the economical operation of power plant.
One significant design principle of minimum discharge environmental transformation be exactly realize multiple environmental protection equipments to same pollutant Cooperation-removal, however in practical transformation process, in order to guarantee single environmental protection equipment to the reliability of pollutant removing, often It in the design process can there are larger surpluses.And each environmental protection equipment still uses dispersion, isolated operational mode in actual operation, Can not each environmental protection equipment of effective coordination on the whole optimization operation, particularly with the long-term underrun in part and actually enter furnace Coal quality deviates the unit of design value, and this problem is just more prominent.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of thermal power plant's environmental protection facility optimization fortune is provided Row control system, the system can guarantee each environmental protection equipment safe operation, while can be by distributing each environmental protection equipment to pollution The contribution rate of object removing realizes energy-saving purpose.
In order to achieve the above objectives, thermal power plant's environmental protection facility optimization operation control system of the present invention includes decision system System, man-machine interactive system, the data collection system for acquiring boiler load A and for controlling each environmental protection facility of coal-burning boiler Control system, wherein the decision system includes for obtaining best furnace outlet NOx controlled concentration according to boiler load A CLTAnd SCR reactor outlet NOx controlled concentration CSCRNOx decision sub-circuit, remove for obtaining best electricity according to boiler load A Dirt device exports flue dust controlled concentration DCCQ, desulfurizing tower export flue dust controlled concentration DTLAnd the control of wet electrostatic precipitator outlet flue dust is dense Spend DCSFlue dust decision sub-circuit and export dust concentration E for obtaining best desulfurizing tower according to boiler load ATLSO2Certainly Plan sub-circuit, wherein data collection system is connected with the input terminal of man-machine interactive system and decision system, decision system and people Machine interactive system and control system are connected.
NOx decision sub-circuit obtains best furnace outlet NOx controlled concentration C according to boiler load ALTAnd SCR reactor goes out Mouth NOx controlled concentration CSCRDetailed process be：
As A ∈ [0, NC1] when, CLT=C11, CSCR=C12；
As A ∈ (NC1,NC2] when, CLT=C11+(C21-C11)×(A-NC1)/(NC2-NC1), CSCR=C22；
As A ∈ (NC2,NC3] when, CLT=C21+(C31-C21)×(A-NC2)/(NC3-NC2), CSCR=C32；
As A ∈ (NC3,Nmax] when, CLT=C31, CSCR=C42, NmaxFor boiler peak load；
Wherein, NC1、NC2And NC3It is the preset value set by man-machine interactive system.
Flue dust decision sub-circuit obtains best electric precipitator according to boiler load A and exports flue dust controlled concentration DCCQ, desulfurizing tower Export flue dust controlled concentration DTLAnd wet electrostatic precipitator outlet flue dust controlled concentration DCSDetailed process be：
As A ∈ [0, ND1] when, DCCQ=D11, DTL=D12, DCS=D13；
As A ∈ (ND1,ND2] when, DCCQ=D11+(D21-D11)×(A-ND1)/(ND2-ND1), DTL=D12+(D22-D12)× (A-ND1)/(ND2-ND1),DCS=D23；
As A ∈ (ND2,ND3] when, DCCQ=D21+(D31-D21)×(A-ND2)/(ND3-ND2), DTL=D22+(D32-D22)× (A-ND2)/(ND3-ND2),DCS=D33；
As A ∈ (ND3,Nmax] when, DCCQ=D31, DTL=D32,DCS=D43, NmaxFor boiler peak load；
Wherein, ND1、ND2And ND3The preset value set for user by man-machine interactive system.
SO2Decision sub-circuit obtains best desulfurizing tower according to boiler load A and exports dust concentration ETLDetailed process be：
As A ∈ [0, NE1] when, ELT=E11；
As A ∈ (NE1,NE2] when, ELT=E21；
As A ∈ (NE2,NE3] when, ELT=E31；
As A ∈ (NE3,Nmax] when, ELT=E41, NmaxFor boiler peak load；
Wherein, NE1、NE2And NE3The preset value set for user by man-machine interactive system.
The invention has the advantages that：
Thermal power plant's environmental protection facility optimization operation control system of the present invention when specific operation, is breaking existing each environmental protection Equipment is coordinated each environmental protection and set using dispersion, isolated operational mode on the basis of guaranteeing that unit pollutant stablizes minimum discharge It is standby, specifically, obtaining best furnace outlet NOx controlled concentration C according to boiler load ALT, SCR reactor outlet NOx controlled concentration CSCR, best electric precipitator export flue dust controlled concentration DCCQ, desulfurizing tower export flue dust controlled concentration DTL, wet electrostatic precipitator outlet Flue dust controlled concentration DCS, best desulfurizing tower export dust concentration ETL, then the data to acquire are control amount by controlling system System control each environmental protection facility of coal-burning boiler, with energy-saving to the contribution rate realization of pollutant removing by distributing each environmental protection equipment Purpose, guarantee the safe operation of each environmental protection equipment.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Wherein, 1 it is data collection system, 2 be decision system, 3 be man-machine interactive system, 4 be control system, 5 is that NOx determines Plan sub-circuit, 6 be flue dust decision sub-circuit, 7 be SO2Decision sub-circuit.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing：
With reference to Fig. 1, thermal power plant's environmental protection facility of the present invention optimization operation control system 4 includes decision system 2, man-machine Interactive system 3, the data collection system 1 for acquiring boiler load A and the control for controlling each environmental protection facility of coal-burning boiler System 4 processed, wherein the decision system 2 includes for obtaining best furnace outlet NOx controlled concentration C according to boiler load ALT And SCR reactor outlet NOx controlled concentration CSCRNOx decision sub-circuit 5, for obtaining best electric precipitation according to boiler load A Device exports flue dust controlled concentration DCCQ, desulfurizing tower export flue dust controlled concentration DTLAnd wet electrostatic precipitator outlet flue dust controlled concentration DCSFlue dust decision sub-circuit 6 and export dust concentration E for obtaining best desulfurizing tower according to boiler load ATLSO2Decision Sub-circuit 7, wherein data collection system 1 is connected with the input terminal of man-machine interactive system 3 and decision system 2, decision system 2 It is connected with man-machine interactive system 3 and control system 4.
NOx decision sub-circuit 5 obtains best furnace outlet NOx controlled concentration C according to boiler load ALTAnd SCR reactor goes out Mouth NOx controlled concentration CSCRDetailed process be：
As A ∈ [0, NC1] when, CLT=C11, CSCR=C12；
As A ∈ (NC1,NC2] when, CLT=C11+(C21-C11)×(A-NC1)/(NC2-NC1), CSCR=C22；
As A ∈ (NC2,NC3] when, CLT=C21+(C31-C21)×(A-NC2)/(NC3-NC2), CSCR=C32；
As A ∈ (NC3,Nmax] when, CLT=C31, CSCR=C42, NmaxFor boiler peak load；
Wherein, NC1、NC2And NC3It is the preset value set by man-machine interactive system 3.
Flue dust decision sub-circuit 6 obtains best electric precipitator according to boiler load A and exports flue dust controlled concentration DCCQ, desulfurization Tower exports flue dust controlled concentration DTLAnd wet electrostatic precipitator outlet flue dust controlled concentration DCSDetailed process be：
As A ∈ [0, ND1] when, DCCQ=D11, DTL=D12, DCS=D13；
As A ∈ (ND1,ND2] when, DCCQ=D11+(D21-D11)×(A-ND1)/(ND2-ND1), DTL=D12+(D22-D12)× (A-ND1)/(ND2-ND1),DCS=D23；
As A ∈ (ND2,ND3] when, DCCQ=D21+(D31-D21)×(A-ND2)/(ND3-ND2), DTL=D22+(D32-D22)× (A-ND2)/(ND3-ND2),DCS=D33；
As A ∈ (ND3,Nmax] when, DCCQ=D31, DTL=D32,DCS=D43, NmaxFor boiler peak load；
Wherein, ND1、ND2And ND3Pass through the preset value that man-machine interactive system 3 is set for user.
SO2Decision sub-circuit 7 obtains best desulfurizing tower according to boiler load A and exports dust concentration ETLDetailed process be：
As A ∈ [0, NE1] when, ELT=E11；
As A ∈ (NE1,NE2] when, ELT=E21；
As A ∈ (NE2,NE3] when, ELT=E31；
As A ∈ (NE3,Nmax] when, ELT=E41, NmaxFor boiler peak load；
Wherein, NE1、NE2And NE3Pass through the preset value that man-machine interactive system 3 is set for user.
In addition, showing each control data and boiler load A by man-machine interactive system 3.

Claims (4)

1. a kind of thermal power plant's environmental protection facility optimizes operation control system, which is characterized in that including decision system (2), human-computer interaction System (3), the data collection system (1) for acquiring boiler load A and the control for controlling each environmental protection facility of coal-burning boiler System (4) processed, wherein the decision system (2) includes dense for obtaining best furnace outlet NOx control according to boiler load A Spend CLTAnd SCR reactor outlet NOx controlled concentration CSCRNOx decision sub-circuit (5), best for being obtained according to boiler load A Electric precipitator exports flue dust controlled concentration DCCQ, desulfurizing tower export flue dust controlled concentration DTLAnd wet electrostatic precipitator outlet flue dust control Concentration D processedCSFlue dust decision sub-circuit (6) and export dust concentration E for obtaining best desulfurizing tower according to boiler load ATL SO2Decision sub-circuit (7), wherein the input terminal of data collection system (1) and man-machine interactive system (3) and decision system (2) It is connected, decision system (2) is connected with man-machine interactive system (3) and control system (4).
2. thermal power plant's environmental protection facility according to claim 1 optimizes operation control system, which is characterized in that NOx decision Circuit (5) obtains best furnace outlet NOx controlled concentration C according to boiler load ALTAnd SCR reactor outlet NOx controlled concentration CSCRDetailed process be：
As A ∈ [0, NC1] when, CLT=C11, CSCR=C12；
As A ∈ (NC1,NC2] when, CLT=C11+(C21-C11)×(A-NC1)/(NC2-NC1), CSCR=C22；
As A ∈ (NC2,NC3] when, CLT=C21+(C31-C21)×(A-NC2)/(NC3-NC2), CSCR=C32；
As A ∈ (NC3,Nmax] when, CLT=C31, CSCR=C42, NmaxFor boiler peak load；
Wherein, NC1、NC2And NC3It is the preset value set by man-machine interactive system (3).
3. thermal power plant's environmental protection facility according to claim 1 optimizes operation control system, which is characterized in that flue dust decision Circuit (6) obtains best electric precipitator according to boiler load A and exports flue dust controlled concentration DCCQ, desulfurizing tower outlet flue dust control it is dense Spend DTLAnd wet electrostatic precipitator outlet flue dust controlled concentration DCSDetailed process be：
As A ∈ [0, ND1] when, DCCQ=D11, DTL=D12, DCS=D13；
As A ∈ (ND1,ND2] when, DCCQ=D11+(D21-D11)×(A-ND1)/(ND2-ND1), DTL=D12+(D22-D12)×(A- ND1)/(ND2-ND1),DCS=D23；
As A ∈ (ND2,ND3] when, DCCQ=D21+(D31-D21)×(A-ND2)/(ND3-ND2), DTL=D22+(D32-D22)×(A- ND2)/(ND3-ND2),DCS=D33；
As A ∈ (ND3,Nmax] when, DCCQ=D31, DTL=D32,DCS=D43, NmaxFor boiler peak load；
Wherein, ND1、ND2And ND3Pass through the preset value that man-machine interactive system (3) are set for user.
4. thermal power plant's environmental protection facility according to claim 1 optimizes operation control system, which is characterized in that SO2Decision son electricity Road (7) obtains best desulfurizing tower according to boiler load A and exports dust concentration ETLDetailed process be：
As A ∈ [0, NE1] when, ELT=E11；
As A ∈ (NE1,NE2] when, ELT=E21；
As A ∈ (NE2,NE3] when, ELT=E31；
As A ∈ (NE3,Nmax] when, ELT=E41, NmaxFor boiler peak load；
Wherein, NE1、NE2And NE3Pass through the preset value that man-machine interactive system (3) are set for user.
CN201810437245.9A 2018-05-09 2018-05-09 A kind of thermal power plant's environmental protection facility optimization operation control system Active CN108826265B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008175483A (en) * 2007-01-19 2008-07-31 Chugoku Electric Power Co Inc:The Unit corresponding operation method in the state of increasing in unburnt component in ash of coal boiler
CN104504498A (en) * 2014-12-04 2015-04-08 国家电网公司 Coal-fired power generating set ultralow emission environmental protection electricity price monitoring method
CN105854599A (en) * 2016-05-20 2016-08-17 福建龙净环保股份有限公司 Synergistic flue gas treatment system and method
CN107890759A (en) * 2017-11-17 2018-04-10 山东大学 CFBB flue gas CO2、SO2And NOxCooperation-removal system and method
CN207279674U (en) * 2017-07-19 2018-04-27 中国华电科工集团有限公司 A kind of cooperative control system of soot emissions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008175483A (en) * 2007-01-19 2008-07-31 Chugoku Electric Power Co Inc:The Unit corresponding operation method in the state of increasing in unburnt component in ash of coal boiler
CN104504498A (en) * 2014-12-04 2015-04-08 国家电网公司 Coal-fired power generating set ultralow emission environmental protection electricity price monitoring method
CN105854599A (en) * 2016-05-20 2016-08-17 福建龙净环保股份有限公司 Synergistic flue gas treatment system and method
CN207279674U (en) * 2017-07-19 2018-04-27 中国华电科工集团有限公司 A kind of cooperative control system of soot emissions
CN107890759A (en) * 2017-11-17 2018-04-10 山东大学 CFBB flue gas CO2、SO2And NOxCooperation-removal system and method

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