CN107906553A - A kind of Boiler Air Heater's optimization progress control method and device - Google Patents

A kind of Boiler Air Heater's optimization progress control method and device Download PDF

Info

Publication number
CN107906553A
CN107906553A CN201710945937.XA CN201710945937A CN107906553A CN 107906553 A CN107906553 A CN 107906553A CN 201710945937 A CN201710945937 A CN 201710945937A CN 107906553 A CN107906553 A CN 107906553A
Authority
CN
China
Prior art keywords
mrow
msub
air
boiler
air heater
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.)
Granted
Application number
CN201710945937.XA
Other languages
Chinese (zh)
Other versions
CN107906553B (en
Inventor
张勇胜
张万德
马登卿
闫慧博
贾永会
刘文献
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Network Hebei Energy Saving Service Co Ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Energy Technology Service Co Ltd
Original Assignee
National Network Hebei Energy Saving Service Co Ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Energy Technology Service Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Network Hebei Energy Saving Service Co Ltd, State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd, State Grid Hebei Energy Technology Service Co Ltd filed Critical National Network Hebei Energy Saving Service Co Ltd
Priority to CN201710945937.XA priority Critical patent/CN107906553B/en
Publication of CN107906553A publication Critical patent/CN107906553A/en
Application granted granted Critical
Publication of CN107906553B publication Critical patent/CN107906553B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Chimneys And Flues (AREA)

Abstract

A kind of Boiler Air Heater's optimizing operation control device, including it is installed on the temperature sensor PT of Boiler Air Heater's air side entranceki, be installed on the temperature sensor PT of steam air heater air side outletko, be installed on the nox concentration sensor PNO of boiler SCR denitration system entranceXi, be installed on boiler SCR denitration system outlet nox concentration sensor PNOXo, the temperature sensor P θ that are installed on differential pressure pickup P P at boiler air preheater fume side both ends, are installed on air preheater flue gas side outlety, data acquisition unit and the computer for being provided with Visual Basic softwares.The present invention includes SCR denitration system and enters, exports the parameter such as nitrous oxides concentration and air preheater fume side pressure difference, consider the excessive caused air preheater blocking factor of denitrating system operation, the escaping of ammonia rate, as another input parameter of control steam air heater steam throttle flow, properly increase steam air heater outlet air temperature, make the hydrogen sulfate ammonia that denitrating system produces be not easy to condense on air preheater heat-transfer surface, prevent air preheater from blocking.

Description

A kind of Boiler Air Heater's optimization progress control method and device
Technical field
, can more specifically, being related to one kind the present invention relates to a kind of Boiler Air Heater's optimization progress control method and device Prevent boiler air preheater from corroding and blocking, the steam air heater progress control method and device of optimization boiler operatiopn.
Background technology
Boiler Air Heater's are the heat exchangers using steam turbine low-pressure steam extraction heating air preheater import air.Boiler Between steam air heater installation pressure fan outlet and air preheater entrance, therefore also known as preposition regenerative air heater.Install steam air heater additional, Raise the air themperature into air preheater, the rise of air preheater wall temperature, thus prevents low-temperature corrosion.Using warm After wind device, reduce the heat transfer temperature difference of air preheater, exhaust gas temperature also just raises, and boiler thermal efficiency declines, and compares It is also obvious using thermal wind sensor.But steam air heater is the increasing of low-pressure pumping steam amount using steam turbine low-pressure steam extraction as heat source Add, steam turbine cycle efficiency is increased.Boiler thermal efficiency declines, and turbine efficiency improves, and can both mutually compensate for, See the height of air heating-up temperature and different using the height of extraction pressure.Generally, the rise of turbine efficiency is supported Do not disappear the reduction of boiler thermal efficiency, as a result, Power Plants efficiency can decline.
Combustion of sulfur generation sulfur dioxide (S+O2=SO2) in fuel, sulfur dioxide are further under the action of catalyst Oxidation generation sulfur trioxide (2SO2+O2=2S03), the SO3 and water vapour generation sulfuric acid vapor (SO3+H2O=in flue gas H2SO4).The presence of sulfuric acid vapor makes the dew point of flue gas significantly raise.Since the temperature of air in air preheater is relatively low, preheater The flue-gas temperature of section is not high, and wall temperature is often less than flue gas dew point, and such sulfuric acid vapor will be condensed on air preheater heating surface, Cause sulfuric acid corrosion.Low-temperature corrosion often occurs on air preheater, but sulfur content is higher in the fuel, excess air coefficient compared with Greatly, SO3 contents are higher in flue gas, dew point rise, and during feed temperature relatively low (steam turbine is high plus disables), economizer tube also has Low-temperature corrosion may occur.
Station boiler arranges that steam air heater preheating is cold to prevent back-end surfaces from low-temperature corrosion occurs generally before air preheater Air.The effect of steam air heater system：In order to improve enter air preheater first and second air temperature, with reduce due to a large amount of cold wind into Enter air preheater heating surface cause condensation, dust stratification and produce ground low-temperature corrosion.But temperature improves, the increase of intake air collateral resistance, Boiler efficiency reduces.But putting into operation for steam air heater influences boiler thermal efficiency, and steam air heater outlet wind-warm syndrome is higher, and boiler thermal efficiency declines It is more.Therefore putting into operation for steam air heater must consider boiler safety and economy.In addition, with Denitration in Boiler device Put into operation, air preheater stopping state happens occasionally, its basic reason is escape ammonia and the SO in flue gas3Reaction product is empty pre- Condensed on device heat exchange element, constantly attach fly ash granule in flue gas and result in blockage, therefore, improve steam air heater outlet wind-warm syndrome and then Air preheater outlet heat exchange element temperature is improved, reduces SO3The condensation of reaction production thing, is that generation current factory prevents that boiler is empty pre- Device blocks one of feasible technical measures.
At present determine steam air heater input factor mainly have environment temperature, use coal sulfur content and boiler tail by The corrosion resistance in hot face etc..Operationally steam air heater is controlled to export wind-warm syndrome in a certain setting value by adjusting throttle flow, but at present Only it is an empirical value for outlet wind-warm syndrome setting value, usually control is higher, does not also consider to cause since denitrification apparatus puts into operation Air preheater blocking factor, causes the unreasonable of steam air heater to put into operation, and not only consumes a large amount of steam, also declines boiler thermal efficiency, Cause unit generation coal consumption increase.There is achievement in research to show, the unreasonable steam air heater that puts into operation can make unit generation coal consumption increase by 2~ 3g/KWh。
The content of the invention
The present invention is directed to above technical problem, there is provided a kind of Boiler Air Heater's optimization progress control method and device, prevent The low-temperature corrosion and blocking of boiler air preheater, and influence of the steam air heater to Boiler Economical Operation is reduced as far as possible.
The technical solution adopted by the present invention to solve the technical problems is as follows：
A kind of Boiler Air Heater's optimizing operation control device, including it is installed on the temperature of Boiler Air Heater's air side entrance Sensor PTki, be installed on the temperature sensor PT of steam air heater air side outletko, be installed on boiler SCR denitration system entrance Nox concentration sensor PNOXi, be installed on boiler SCR denitration system outlet nox concentration sensor PNOXo, peace Differential pressure pickup P Δs P loaded on boiler air preheater fume side both ends, the temperature sensor for being installed on air preheater flue gas side outlet Pθy, data acquisition unit and the computer for being provided with Visual Basic softwares；
The temperature sensor PTko, temperature sensor PTki, nox concentration sensor PNOXi, nitrous oxides concentration Sensor PNOXo, differential pressure pickup P Δs P and temperature sensor P θyOutput terminal connect the corresponding of data acquisition unit respectively Input terminal；The input terminal of the output terminal connection computer of the data acquisition unit；Output terminal is provided with the computer.
A kind of Boiler Air Heater's optimization progress control method of application power above device, comprises the following steps：
Step 1, sets up above-mentioned detection platform；
Step 2, carries out data sampling and data input, comprises the following steps：
(1) temperature sensor PT is utilizedkiGather the temperature value T of steam air heater air inlet side airki, unit for DEG C, temperature Spend sensor PTkoGather the temperature value T of steam air heater air outlet slit side airko, unit for DEG C, nox concentration sensor PNOXiGather the nitrous oxides concentration value NO of boiler SCR denitration system entranceXi, unit mg/Nm3, nitrous oxides concentration sensing Device PNOXoGather the nitrous oxides concentration value NO of boiler SCR denitration system outletXo, unit mg/Nm3, differential pressure pickup P Δs P Gather the pressure differential deltap P, unit kPa, temperature sensor P θ at boiler air preheater fume side both endsyCollection air preheater fume side goes out The temperature value θ of mouthy, unit is DEG C；
(2) the following initial data of computer is inputted：The mass percent S of sulphur in fire coalar, it is coal-fired in grey quality percentage Compare Aar, ash quantity accounts for the mass percent d of coal-fired total ash quantity in flying dustfh, coal-fired low heat valve Qar net, unit kJ/kg, Water dew point tK in flue gas under steam partial pressureOH, unit for DEG C, that steam air heater outlet air temperature corrects constant A, boiler is empty pre- The pressure difference design load Δ P at device fume side both endssj；
Step 3, the data in step 2 are calculated：
Boiler air preheater exiting flue gas acid dew point tp, calculation formula is as follows：
Sn=Sar/(Qar net/4187)
An=Aar/(Qar net/4187)
In formula, Sn=Sar/(Qar net/ 4187) conversion sulfur when to be 4187kj/kg corresponding to calorific value of coal；
An=Aar/(Qar net/ 4187) conversion ash when to be 4187kj/kg corresponding to calorific value of coal；
Steam air heater outlet air temperature control targe value TKko, calculation formula is as follows：
Step 4, the TK that step 3 is obtainedkoAs control steam inlet channel control valve aperture, adjust steam air heater The input parameter of steam throttle flow, accesses Power Plant DCS System, establishes steam air heater automatic control system.
Further, the portable data recording instrument of the model OM-DAQPRO-6300 of the data acquisition unit.
When boiler operatiopn, present system can guarantee that back-end surfaces wall temperature higher than flue gas acid under different operating modes Dew point can improve steam air heater outlet air temperature and low temperature neither occur in setting range according to the stopping state of air preheater Corrosion, boiler thermal efficiency is also of a relatively high, and can be alleviated in advance according to denitrating system operating condition at present due to denitrating system mistake Air preheater blockage problem caused by amount spray ammonia.The system is changed at present only by the steam air heater fortune of empirical value setting hot blast temperature Line mode.
Beneficial effects of the present invention：Determining the factor of steam air heater input at present mainly has environment temperature, uses coal sulfur-bearing Amount and the corrosion resistance of heated surface at the end of boiler etc..Operationally steam air heater outlet wind-warm syndrome is controlled to exist by adjusting throttle flow A certain setting value, but at present for outlet wind-warm syndrome setting value be only an empirical value, usually control it is higher, do not consider yet by Put into operation in denitrification apparatus and cause air preheater blocking factor, cause the unreasonable of steam air heater to put into operation, not only consume a large amount of steam, Decline boiler thermal efficiency, cause unit generation coal consumption increase.There is achievement in research to show, the unreasonable steam air heater that puts into operation can make machine Group coal consumption for power generation increases by 2~3g/KWh.Different boilers are obtained by calculation according to burning coal situation and operating parameter in the present invention Flue gas acid dew point under operating mode, as one of input parameter of control steam air heater steam throttle flow, can make steam air heater Outlet air temperature is controlled in OK range, both be can guarantee that device security, also be can guarantee that unit operation economy；This hair Bright SCR denitration system of including enters, exports the parameter such as nitrous oxides concentration and air preheater fume side pressure difference, considers denitrating system Air preheater blocking factor caused by operation, the escaping of ammonia rate are excessive, as another input of control steam air heater steam throttle flow Parameter, properly increases steam air heater outlet air temperature, the hydrogen sulfate ammonia that denitrating system produces is not easy to condense in air preheater and is changed On hot face, prevent air preheater from blocking.The system can access Power Plant DCS system, complete coal quality, Gas Parameters input and The hand of control system, be automatically brought into operation and parameter adjustment, practicality easy to operate.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Embodiment
A kind of Boiler Air Heater's optimizing operation control device, including it is installed on the temperature of Boiler Air Heater's air side entrance Sensor PTki, be installed on the temperature sensor PT of steam air heater air side outletko, be installed on boiler SCR denitration system entrance Nox concentration sensor PNOXi, be installed on boiler SCR denitration system outlet nox concentration sensor PNOXo, peace Differential pressure pickup P Δs P loaded on boiler air preheater fume side both ends, the temperature sensor for being installed on air preheater flue gas side outlet Pθy, data acquisition unit and the computer for being provided with Visual Basic softwares；The temperature sensor PTko, temperature sensing Device PTki, nox concentration sensor PNOXi, nox concentration sensor PNOXo, differential pressure pickup P Δs P and temperature Sensor
PθyOutput terminal connect the respective input of data acquisition unit respectively；The output terminal of the data acquisition unit Connect the input terminal of computer；Output terminal is provided with the computer.
A kind of Boiler Air Heater's optimization progress control method of application power above device, comprises the following steps：
Step 1, sets up above-mentioned detection platform；
Step 2, carries out data sampling and data input, comprises the following steps：
(1) temperature sensor PT is utilizedkiGather the temperature value T of steam air heater air inlet side airki, unit for DEG C, temperature Spend sensor PTkoGather the temperature value T of steam air heater air outlet slit side airko, unit for DEG C, nox concentration sensor PNOXiGather the nitrous oxides concentration value NO of boiler SCR denitration system entranceXi, unit mg/Nm3, nitrous oxides concentration sensing Device PNOXoGather the nitrous oxides concentration value NO of boiler SCR denitration system outletXo, unit mg/Nm3, differential pressure pickup P Δs P Gather the pressure differential deltap P, unit kPa, temperature sensor P θ at boiler air preheater fume side both endsyCollection air preheater fume side goes out The temperature value θ of mouthy, unit is DEG C；
(2) the following initial data of computer is inputted：The mass percent S of sulphur in fire coalar, it is coal-fired in grey quality percentage Compare Aar, ash quantity accounts for the mass percent a of coal-fired total ash quantity in flying dustfh, coal-fired low heat valve Qar net, unit kJ/kg, Water dew point tK in flue gas under steam partial pressureOH, unit for DEG C, that steam air heater outlet air temperature corrects constant A, boiler is empty pre- The pressure difference design load Δ P at device fume side both endssj；
Step 3, the data in step 2 are calculated：
Boiler air preheater exiting flue gas acid dew point tp, calculation formula is as follows：
Sn=Sar/(Qar net/4187)
An=Aar/(Qar net/4187)
In formula, Sn=Sar/(Qar net/ 4187) conversion sulfur when to be 4187kj/kg corresponding to calorific value of coal；
An=Aar/(Qar net/ 4187) conversion ash when to be 4187kj/kg corresponding to calorific value of coal；
Steam air heater outlet air temperature control targe value TKko, calculation formula is as follows：
Step 4, the TK that step 3 is obtainedkoAs control steam inlet channel control valve aperture, adjust steam air heater The input parameter of steam throttle flow, accesses Power Plant DCS System, establishes steam air heater automatic control system.
Further, the portable data recording instrument of the model OM-DAQPRO-6300 of the data acquisition unit.
When boiler operatiopn, present system can guarantee that back-end surfaces wall temperature higher than flue gas acid under different operating modes Dew point can improve steam air heater outlet air temperature and low temperature neither occur in setting range according to the stopping state of air preheater Corrosion, boiler thermal efficiency is also of a relatively high, and can be alleviated in advance according to denitrating system operating condition at present due to denitrating system mistake Air preheater blockage problem caused by amount spray ammonia.The system is changed at present only by the steam air heater fortune of empirical value setting hot blast temperature Line mode.
Beneficial effects of the present invention：Determining the factor of steam air heater input at present mainly has environment temperature, uses coal sulfur-bearing Amount and the corrosion resistance of heated surface at the end of boiler etc..Operationally steam air heater outlet wind-warm syndrome is controlled to exist by adjusting throttle flow A certain setting value, but at present for outlet wind-warm syndrome setting value be only an empirical value, usually control it is higher, do not consider yet by Put into operation in denitrification apparatus and cause air preheater blocking factor, cause the unreasonable of steam air heater to put into operation, not only consume a large amount of steam, Decline boiler thermal efficiency, cause unit generation coal consumption increase.There is achievement in research to show, the unreasonable steam air heater that puts into operation can make machine Group coal consumption for power generation increases by 2~3g/KWh.
The flue gas acid dew under different boiler working conditions is obtained by calculation according to burning coal situation and operating parameter by the present invention Point, as one of input parameter of control steam air heater steam throttle flow, can make the control of steam air heater outlet air temperature exist In OK range, device security both can guarantee that, also can guarantee that unit operation economy；The present invention includes SCR denitration system Enter, export the parameter such as nitrous oxides concentration and air preheater fume side pressure difference, consider that denitrating system operation, the escaping of ammonia rate are excessive Caused air preheater blocking factor, as another input parameter of control steam air heater steam throttle flow, properly increases warm wind Device outlet air temperature, makes the hydrogen sulfate ammonia that denitrating system produces be not easy to condense on air preheater heat-transfer surface, prevents air preheater from blocking up Plug.The system can access Power Plant DCS System, complete coal quality, the hand of the input of Gas Parameters and control system, automatic behaviour Work and parameter adjustment, practicality easy to operate.

Claims (5)

  1. A kind of 1. Boiler Air Heater's optimizing operation control device, it is characterised in that：It includes being installed on Boiler Air Heater's air side The temperature sensor PT of entranceki, be installed on the temperature sensor PT of steam air heater air side outletko, be installed on boiler SCR denitration The nox concentration sensor PNO of system entryXi, be installed on boiler SCR denitration system outlet nitrous oxides concentration sensing Device PNOXo, be installed on the differential pressure pickup P Δs P at boiler air preheater fume side both ends, be installed on the temperature of air preheater flue gas side outlet Spend sensor P θy, data acquisition unit and the computer for being provided with Visual Basic softwares.
  2. A kind of 2. Boiler Air Heater's optimizing operation control device according to claim 1, it is characterised in that：The temperature passes Sensor PTko, temperature sensor PTki, nox concentration sensor PNOXi, nox concentration sensor PNOXo, pressure difference sensing Device P Δs P and temperature sensor P θy。
  3. A kind of 3. Boiler Air Heater's optimizing operation control device according to claim 1, it is characterised in that：The temperature passes The output terminal of sensor connects the respective input of data acquisition unit respectively；The output terminal connection of the data acquisition unit calculates The input terminal of machine；Output terminal is provided with the computer.
  4. 4. a kind of Boiler Air Heater's using claim 1 described device optimize progress control method, it is characterised in that including with Lower step：
    Step 1, sets up the detection platform described in claim 1；
    Step 2, carries out data sampling and data input, comprises the following steps：
    (1) temperature sensor PT is utilizedkiGather the temperature value T of steam air heater air inlet side airki, unit for DEG C, temperature sensing Device PTkoGather the temperature value T of steam air heater air outlet slit side airko, unit for DEG C, nox concentration sensor PNOXiCollection The nitrous oxides concentration value NO of boiler SCR denitration system entranceXi, unit mg/Nm3, nox concentration sensor PNOXoAdopt Collect the nitrous oxides concentration value NO of boiler SCR denitration system outletXo, unit mg/Nm3, differential pressure pickup P Δs P collection boiler The pressure differential deltap P at air preheater fume side both ends, unit kPa, temperature sensor P θyGather the temperature value of air preheater flue gas side outlet θy, unit is DEG C；
    (2) the following initial data of computer is inputted：The mass percent S of sulphur in fire coalar, it is coal-fired in grey mass percent Aar、 Ash quantity accounts for the mass percent a of coal-fired total ash quantity in flying dustfh, coal-fired low heat valve Qar net, in unit kJ/kg, flue gas Water dew point tK under steam partial pressureOH, unit for DEG C, steam air heater outlet air temperature correct constant A, boiler air preheater fume side The pressure difference design load Δ P at both endssj；
    Step 3, the data in step 2 are calculated：
    Boiler air preheater exiting flue gas acid dew point tp, calculation formula is as follows：
    <mrow> <msub> <mi>t</mi> <mi>p</mi> </msub> <mo>=</mo> <msub> <mi>tK</mi> <mrow> <mi>O</mi> <mi>H</mi> </mrow> </msub> <mo>+</mo> <mn>201.5</mn> <mo>&amp;times;</mo> <mroot> <msub> <mi>S</mi> <mi>n</mi> </msub> <mn>3</mn> </mroot> <mo>/</mo> <msup> <mn>1.23</mn> <mrow> <msub> <mi>&amp;alpha;</mi> <mrow> <mi>f</mi> <mi>h</mi> </mrow> </msub> <msub> <mi>A</mi> <mi>n</mi> </msub> </mrow> </msup> </mrow>
    Sn=Sar/(Qar net/4187)
    An=Aar/(Qar net/4187)
    Steam air heater outlet air temperature control targe value TKko, calculation formula is as follows：
    <mrow> <msub> <mi>TK</mi> <mrow> <mi>k</mi> <mi>o</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <msub> <mi>t</mi> <mi>p</mi> </msub> <mo>+</mo> <mfrac> <mrow> <msub> <mi>NO</mi> <mrow> <mi>x</mi> <mi>i</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>NO</mi> <mrow> <mi>x</mi> <mi>o</mi> </mrow> </msub> </mrow> <mrow> <msub> <mi>NO</mi> <mrow> <mi>x</mi> <mi>i</mi> </mrow> </msub> </mrow> </mfrac> <mfrac> <mrow> <mi>&amp;Delta;</mi> <mi>P</mi> </mrow> <mrow> <msub> <mi>&amp;Delta;P</mi> <mrow> <mi>s</mi> <mi>j</mi> </mrow> </msub> </mrow> </mfrac> <mi>A</mi> <mo>-</mo> <msub> <mi>&amp;theta;</mi> <mi>y</mi> </msub> <mo>;</mo> </mrow>
    Step 4, the TK that step 3 is obtainedkoAs control steam inlet channel control valve aperture, adjust steam air heater steam into The input parameter of vapour amount, accesses Power Plant DCS System, establishes steam air heater automatic control system.
  5. 5. a kind of Boiler Air Heater's optimization progress control method according to claim 1 and device, it is characterised in that：It is described The portable data recording instrument of the model OM-DAQPRO-6300 of data acquisition unit.
CN201710945937.XA 2017-10-12 2017-10-12 A kind of Boiler Air Heater's optimization progress control method and device Active CN107906553B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710945937.XA CN107906553B (en) 2017-10-12 2017-10-12 A kind of Boiler Air Heater's optimization progress control method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710945937.XA CN107906553B (en) 2017-10-12 2017-10-12 A kind of Boiler Air Heater's optimization progress control method and device

Publications (2)

Publication Number Publication Date
CN107906553A true CN107906553A (en) 2018-04-13
CN107906553B CN107906553B (en) 2019-03-22

Family

ID=61841297

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710945937.XA Active CN107906553B (en) 2017-10-12 2017-10-12 A kind of Boiler Air Heater's optimization progress control method and device

Country Status (1)

Country Link
CN (1) CN107906553B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110332511A (en) * 2019-06-18 2019-10-15 西安交通大学 A kind of Boiler Air Heater's water impact preventing system and method
CN112730506A (en) * 2020-12-03 2021-04-30 国网河北能源技术服务有限公司 Method and device for evaluating heat exchange performance of air preheater
CN113426293A (en) * 2021-07-05 2021-09-24 苏州西热节能环保技术有限公司 SCR denitration device operation method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278768A (en) * 2011-06-28 2011-12-14 高明逊 Energy-saving optimizing control system of power station boiler steam air heater
CN202141069U (en) * 2011-05-28 2012-02-08 山东省电力学校 Steam inlet adjusting system of steam air heater
CN203550197U (en) * 2013-11-08 2014-04-16 中国人民解放军总后勤部建筑工程研究所 Self-powered fuel fan heater
CN205227380U (en) * 2015-11-07 2016-05-11 中机国能电力工程有限公司 Fan heater system based on steam turbine exhaust steam and boiler gas recirculation utilize
US9480363B2 (en) * 2010-09-09 2016-11-01 Thomas Delattre Baby bottle warmer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9480363B2 (en) * 2010-09-09 2016-11-01 Thomas Delattre Baby bottle warmer
CN202141069U (en) * 2011-05-28 2012-02-08 山东省电力学校 Steam inlet adjusting system of steam air heater
CN102278768A (en) * 2011-06-28 2011-12-14 高明逊 Energy-saving optimizing control system of power station boiler steam air heater
CN203550197U (en) * 2013-11-08 2014-04-16 中国人民解放军总后勤部建筑工程研究所 Self-powered fuel fan heater
CN205227380U (en) * 2015-11-07 2016-05-11 中机国能电力工程有限公司 Fan heater system based on steam turbine exhaust steam and boiler gas recirculation utilize

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110332511A (en) * 2019-06-18 2019-10-15 西安交通大学 A kind of Boiler Air Heater's water impact preventing system and method
CN112730506A (en) * 2020-12-03 2021-04-30 国网河北能源技术服务有限公司 Method and device for evaluating heat exchange performance of air preheater
CN112730506B (en) * 2020-12-03 2023-07-18 国网河北能源技术服务有限公司 Method and device for evaluating heat exchange performance of air preheater
CN113426293A (en) * 2021-07-05 2021-09-24 苏州西热节能环保技术有限公司 SCR denitration device operation method
CN113426293B (en) * 2021-07-05 2022-11-25 苏州西热节能环保技术有限公司 SCR denitration device operation method

Also Published As

Publication number Publication date
CN107906553B (en) 2019-03-22

Similar Documents

Publication Publication Date Title
CN107726917B (en) Using the Thermal generation unit air preheater cold-end air temprature control method of SCR denitration
CN104807035B (en) A kind of air preheat and smoke waste heat utilization system and method
CN107906553B (en) A kind of Boiler Air Heater&#39;s optimization progress control method and device
CN103486566A (en) Waste heat utilization system capable of guaranteeing lignite boiler dry output and SCR safe flue gas temperature
CN202419687U (en) System capable of avoiding low-temperature corrosion of air pre-heater of gas boiler
CN205717147U (en) A kind of full load denitration utilizes and air preheater corrosion-and blocking-prevention coupled system with fume afterheat
CN207006114U (en) A kind of energy conserving system of boiler
CN105526577B (en) The low low-level (stack-gas) economizer system of regulation and control can be stablized
WO2022088686A1 (en) Gas boiler tail flue gas energy-saving and emission-reduction system
CN103307623B (en) A kind of sub-control phase-change heat exchange system of Collaborative Control and heat-exchange method
CN106556022B (en) A kind of high temperature cigarette cooler-steam air heater system suitable for SCR denitration system
CN102620310B (en) Air pre-heater system preventing low-temperature corrosion and air pre-heating method
CN204756887U (en) High -efficient hot media water system of circulating fluidized bed boiler
CN205607235U (en) Hot media water tubular heat exchanger control system
CN105889899B (en) A kind of overheating steam temperature regulating system and method suitable for putting into operation under SCR underloads
CN110145754A (en) It can prevent the boiler flue gas treatment system and method for back-end surfaces low-temperature corrosion
CN206131023U (en) Stable control gas boiler coal air preheater low temperature corrosion&#39;s device
CN213446806U (en) SCR low-temperature denitration heating energy-saving device for glass kiln flue gas
CN212673284U (en) Cold end temperature measuring system of air preheater
CN201259210Y (en) Non-phase-change composite heat exchanger
CN205299475U (en) Low low -level (stack -gas) economizer system that can stably regulate and control
CN208155083U (en) Unpowered hot standby system of coke oven chimney
CN209540885U (en) A kind of warm and humid coupling gas fired-boiler low nitrogen burning system
CN208042180U (en) A kind of white plume elimination system based on flue gas recirculating technique
CN205948592U (en) A desulfurization system for using low -sulfur coal burning boiler

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant