CN107228065A - A kind of new air compressor plant of power plant energy saving integrated remodeling method - Google Patents

A kind of new air compressor plant of power plant energy saving integrated remodeling method Download PDF

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Publication number
CN107228065A
CN107228065A CN201710326480.4A CN201710326480A CN107228065A CN 107228065 A CN107228065 A CN 107228065A CN 201710326480 A CN201710326480 A CN 201710326480A CN 107228065 A CN107228065 A CN 107228065A
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China
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air compressor
transformation
plant
drier
power plant
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CN107228065B (en
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赵毅
寇水潮
兀鹏越
柴琦
居文平
姜宁
乔磊
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Xian Thermal Power Research Institute Co Ltd
Xian Xire Energy Saving Technology Co Ltd
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Xian Thermal Power Research Institute Co Ltd
Xian Xire Energy Saving Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention belongs to power plant's air compressor energy-saving renovation technique field, and in particular to a kind of new air compressor plant of power plant energy saving integrated remodeling method.This method is frequently added and subtracted for existing power plant's air compressor machine carries the pressure oscillation problem caused and air compressor machine drier using finished product gas progress adsorbent reactivation problem, after being calculated by gas consumption, base lotus is used as using centrifugal compressor, the original part air compressor machine auxiliary adjustment of power plant, low-voltage variable frequency air compressor machine realizes peak load shifting, centrifugal compressor is equipped with compression heat regeneration type drier simultaneously, and original air compressor machine and low-voltage variable frequency air compressor machine is equipped with zero-emission finished product gas recirculation type drier.The present invention can reduce air compressor machine finished product gas gas consumption; reduce compressor operation power consumption; and for instrument valve, ash disposal system, use mixedly gas system and provide pressure constant gas, reduction power plant caused by air compressor machine irregular operation shuts down production accident, is that power plant safety, economical operation escort.

Description

A kind of new air compressor plant of power plant energy saving integrated remodeling method
Technical field：
The invention belongs to power plant's air compressor energy-saving renovation technique field, and in particular to a kind of new air compressor plant of power plant energy-conservation Integrated remodeling method.
Background technology：
With becoming increasingly conspicuous for environmental problem, cause drastically to decline building thermal power plant's quantity, following China's electric power energy weight Point will turn to the new energy such as nuclear power, water power, wind-powered electricity generation and solar energy, and existing thermal power plant's overall number will remain unchanged as.Due to fire Electric increased number is restricted, and each high-power station carries out and further excavated the potentiality of energy saving for power plants transformation.In thermoelectricity production Compressed air is mainly used in Thermal Meter, ash disposal conveying and maintenance and uses mixedly three big fields in technique, and air compressor plant operation troubles Whole thermal power plant's operational reliability is directly affected, stopping accident can be caused when serious, therefore air compressor system is described as thermal power plant " Two station service electrical systems ".It is known that air compressor system is a high system of power consumption, according to about the effective of data display air compressor machine Utilization rate is only 23% or so, therefore it is very urgent to improve air compressor system links energy utilization rate.Usual air compressor machine goes out Gas is first passed through after cooling driers are cooled down, and double-tower dryer is entered after the liquid in simple separation compressed air empty to compression Gas is further dried, and during double-tower dryer operation, when a tower is compressed air adsorption flow, another tower is then Into regeneration link.Current drying device tower extracts part compression finished product gas and carries out heating after-blow except in tower when being regenerated Adsorbent, is then discharged into air by the valuable finished product gas.It is same to extract in finished product air cooling tower simultaneously in tower re-generatively cooled Air is discharged into after adsorbent, original air compressor machine utilization rate is just relatively low, is still to waste valuable finished product gas when tower is regenerated in addition. There is following defect and deficiency during existing air compressor plant of power plant desiccant regeneration：(1) frequently load, subtract during air compressor machine normal work Carry, cause air supply pressure fluctuation very big, supply gas pressure is unstable；(2) it is empty using the relatively low screw machine of compression efficiency and piston type Air compressor, electric conversion efficiency is low, and loss is big；3) agent is dried using compression finished product gas when drier regeneration cycle is used Regeneration, causes gas to waste serious, further increases air compressor machine power consumption.
The content of the invention：
The purpose of the present invention be for existing air compressor plant of power plant exist not enough there is provided a kind of new power plant's air compressor machine Stand energy saving integrated remodeling method, it can reduce air compressor machine finished product gas gas consumption, reduce compressor operation power consumption, and be gauge valve Door, ash disposal system, use mixedly gas system and provide pressure constant gas, reduction power plant caused by air compressor machine irregular operation shuts down life Production accident, is that power plant safety, economical operation escort.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that to realize：
A kind of new air compressor plant of power plant energy saving integrated remodeling method, comprises the following steps：
1) air compressor plant firsthand information before repowering is collected, waits to enter step 2 after the completion of collecting)；
2) air compressor plant supply gas pressure curve before the integration transformation of measurement power plant air compressor energy-saving, and enter step 3)；
3) new air compressor plant of power plant energy saving integrated modification scheme is established, and enters step 4)；
4) air compressor energy-saving integration transformation Economic and Efficiency Analysis, and enter step 5)；
5) air compressor plant supply gas pressure curve after new power plant's air compressor energy-saving integration transformation is measured, and enters step 6)；
6) forward and backward air compressor plant of the power plant supply gas pressure curve of contrast transformation, into step 7)；
7) new air compressor plant of power plant energy saving integrated transformation terminates.
Of the invention further improve be, step 1) in collect air compressor plant firsthand information before repowering, its is specific Step is as follows：
101) the original air compressor plant air compressor machine number of units n of power plant, model, power P are collectedi, voltage, flow Qi, pressure and complete Available machine time T in yeari；
102) the original air compressor plant drier number of units m of power plant, model, power P are collectedj, voltage, dew point, processing tolerance with And and every drier and air compressor machine connected mode；
103) pressure, volume and the connected mode with dryer export of power plant's air accumulator are collected.
Of the invention further improve be, step 2) in air compressor plant before the air compressor energy-saving integration transformation of measurement power plant During supply gas pressure curve, pressure monitoring sensor is installed in instrument air accumulator to instrument supply main pipe junction, continuous measurement is simultaneously Record the instrument supply gas pressure curve in one week；Pressure monitoring sensing is installed in ash disposal air accumulator to ash disposal supply main pipe junction Device, continuously measures and records the ash disposal supply gas pressure curve in one week；Pacify using mixedly air accumulator to supply main pipe junction is used mixedly Pressure monitoring sensor is filled, continuously measures and records in one week and use mixedly supply gas pressure curve.
The present invention, which is further improved, to be, step 3) middle new air compressor plant of the power plant energy saving integrated modification scheme of establishment When, installing a platforms centrifugal air compressor new first is as base lotus, i.e. compressed air main power source, and drier chooses compression Residual heat regenerating mode；Then on the premise of ensureing air demand, original b platforms exhaust end base of oil injection threaded bolt type or piston type air compressor is kept to make For auxiliary back-up power source, it act as peak regulation, and drying mode chooses zero-emission regeneration；Finally choose c platform 380V voltages The stability of grade frequency conversion air compressor regulation air compressor plant supply gas pressure, i.e. peak clipping fill out lotus effect, and for rear class instrument, ash disposal, Air lift is used mixedly for constant supply gas pressure, its correspondence drier chooses zero-emission regeneration；Wherein air compressor machine base lotus number of units a, Auxiliary standby moves number of units b, and the specific calculation procedures of peak load shifting frequency conversion air compressor number of units c are as follows：
301) calculating the effective air demand of whole air compressor plant before transformation isWherein ηiFor transformation before with Gas consumption rate when drier corresponding to every air compressor machine regenerates；
302) centrifugal air compressor base lotus number of unitsWherein a take decimal point neglect after integer, the centrifugation of every high efficiency Formula air compressor tolerance is Qd, rated power is Pd；
303) auxiliary standby screw or piston type air compressor number of unitsWherein n is pneumatics board before transformation Number；
304) peak load shifting 380V low-voltage variable frequencies air compressor machine number of units c=1, its rated power is Pe。
Of the invention further improve be, step 4) in the transformation Economic and Efficiency Analysis of air compressor machine energy saving integrated include such as Lower step：
401) the air compressor machine consumption electricity charge before energy saving integrated transformation
Wherein, $BeforeFor air compression station consumption total electricity bill, member before transformation；θ is electricity Unit Price, member/kWh；N is pneumatics before transformation Board number, m is drier number of units, P before transformationiFor air compressor machine rated power, kW before transformation；TiOpened for air compressor machine whole year before transformation Machine time, h；PjFor drier rated power, kW before transformation；αjTo transform preceding drier regeneration times, times/day；βjBefore transformation Drier regeneration is time-consuming every time to be counted, h/ times；djFor annual start number of days, day before transformation；
402) the air compressor machine consumption electricity charge after new power plant's air compressor energy-saving integration transformation
Wherein, $AfterwardsTotal electricity bill, member are consumed for air compression station after transformation；PdFor centrifugal air compressor rated power, kW；TdTo change Make rear centrifugal air compressor annual available machine time, h；PiFor original air compressor machine rated power, kW after transformation；TiTo be original after transformation Air compressor machine available machine time whole year, h；WjFor drier heater power ratings, kW after transformation；EjFor drier blower fan volume after transformation Determine power, kW；λjFor drier regeneration times after transformation, times/day；γjCounted for drier regeneration after transformation is time-consuming every time, h/ times； μjFor annual start number of days, day after transformation；PeFor frequency conversion air compressor rated frequency, kW after transformation；TeFor frequency conversion air compressor after transformation Annual available machine time, h；WeFor frequency conversion air compressor correspondence drier heater power ratings, kW after transformation；EeFor frequency conversion after transformation Air compressor machine correspondence drier blower fan rated power, kW；λeDrier regeneration times are corresponded to for frequency conversion air compressor after transformation, times/day； γeCounted for the regeneration of frequency conversion air compressor correspondence drier is time-consuming every time after transformation, h/ times；μeIt is dry for frequency conversion air compressor correspondence after transformation Drying prescription whole year start number of days, day；
403) air compressor machine year saving economic benefit isBefore- $Afterwards, energy-conservation ratioPay off period isWherein $ThrowFor investment for trnasforming urban land cost.
Of the invention further improve be, step 5) in pneumatics after the new power plant's air compressor energy-saving integration transformation of measurement Machine station supply gas pressure curve method and the step 2) it is identical, contrast transforms forward and backward instrument use, ash disposal, uses mixedly air pressure force curve, changes Smooth steady before supply gas pressure curve after making relatively is transformed, and the source of the gas of high-quality is provided for rear class gas equipment.
Of the invention further improve be, step 3) pressure has been previously set in peak load shifting 380V low-voltage variable frequency air compressor machines Value, when supply gas pressure is higher than setup pressure value, reduces pressure, to reach setting pressure by reducing rotational speed of air compressor Value, when supply gas pressure is less than setup pressure value, increases pressure by increasing rotational speed of air compressor, is by peak load shifting means Rear class gas equipment realizes constant pressure air feeding；Step 3) centrifugal drier, without additionally configuration heater and blower fan, utilizes centrifugation Formula compressor gas own temperature realizes that drier regeneration cycle is used.
Compared with prior art, the present invention has advantages below：
A kind of new air compressor plant of power plant energy saving integrated remodeling method that the present invention is provided, by collecting pneumatics before transformation Machine station firsthand information, data calculation basis is provided for reducing energy consumption, measures original air compressor plant supply gas pressure curve, follow-up foundation This pressure curve carries out constant pressure air feeding quantitative analysis, comprehensive centrifugal air compressor, exhaust end base of oil injection threaded bolt air compressor machine and low-voltage variable frequency pneumatics The advantage of machine establishes modification scheme, and air compressor system power consumption before and after transformation is analyzed, and calculates and saves economical year Benefit and pay off period, air compressor system supply gas pressure after measurement is transformed again, it is ensured that air supply pressure fluctuation is in controllable model In enclosing.
Further, the present invention collects air compressor plant air compressor machine quantity, power, rated voltage, supply gas pressure and flow, collects Preprocessor drier quantity, power, dew point, be adsorbed in the regeneration period, establish air compressor machine and post processing connected mode and after Handle on the basis of regeneration technology flow, further excavate the space of air compressor plant reducing energy consumption.
Further, the present invention is continuous records instrument, ash disposal in one week, uses mixedly gas supply gas pressure curve, determines original pneumatics Machine station air supply system existing defects, and measure instrument, ash disposal after transformation, use mixedly gas supply gas pressure curve, being capable of quantitative analysis sky Press station constant pressure air feeding system supply performance and pressure stability, and for rear class gas equipment provide stably and high-quality gas Source.
Further, the present invention is by the use of the centrifugal air compressor of electric conversion efficiency high as base lotus, the original screw type of power plant Air compressor machine is used for peak load shifting, constant pressure is provided for rear class gas equipment, is kept away as auxiliary adjustment, low-voltage variable frequency air compressor machine Exempt from air compressor machine and frequently add and subtract the pressure oscillation for carrying and causing.
Further, the supporting drier of centrifugal air compressor of the present invention institute is without external heater and blower fan, using centrifugal Compressor itself heat of compression realizes that rear class drier regeneration cycle is used, and screw machine drier is then using finished product gas recycling skill Art, reduction air compressor system drier regeneration gas consumption.
Further, the present invention substitutes conventional power plants air compressor plant drier, can be ash disposal system using novel dried technology System, instrument system, use mixedly gas system high-quality gas is provided, it is to avoid ash disposal system occurs hardened, reduces instrument system corrosion Probability.
Further, 20% is at least saved after present invention transformation, good energy-conserving effect, while automaticity is high, further drops Low cost of labor and the artificial operation of reduction, and ensure that air compressor system is continuously safely and reliably run.
Further, invention low-voltage variable frequency air compressor machine utilizes close-loop control mode, dynamic regulation instrument, ash disposal, uses mixedly gas system System supply gas pressure, constant pressure air feeding realized by peak load shifting technological means.
In summary, present invention supply stable gas pressure, good energy-conserving effect provides the constant height of pressure for rear class gas equipment Quality gas, it is adaptable to the industrial gas such as heating power, oil, chemical industry, metallurgy field.
Brief description of the drawings：
Fig. 1 is remodeling method flow chart of the present invention.
Embodiment：
Below by drawings and examples, technical scheme is described in further detail.
As shown in figure 1, a kind of new air compressor plant of power plant energy saving integrated remodeling method of the present invention, including it is as follows Step：
1) air compressor plant firsthand information before repowering is collected, waits to enter step 2 after the completion of collecting)；
2) air compressor plant supply gas pressure curve before the integration transformation of measurement power plant air compressor energy-saving, and enter step 3)；
3) new air compressor plant of power plant energy saving integrated modification scheme is established, and enters step 4)；
4) air compressor energy-saving integration transformation Economic and Efficiency Analysis, and enter step 5)；
5) air compressor plant supply gas pressure curve after new power plant's air compressor energy-saving integration transformation is measured, and enters step 6)；
6) forward and backward air compressor plant of the power plant supply gas pressure curve of contrast transformation, into step 7)；
7) new air compressor plant of power plant energy saving integrated transformation terminates.
In the present embodiment, step 1) in collect air compressor plant firsthand information before repowering, it is comprised the following steps that：
101) the original air compressor plant air compressor machine number of units n of power plant, model, power P are collectedi, voltage, flow Qi, pressure and complete Available machine time T in yeari；
102) the original air compressor plant drier number of units m of power plant, model, power P are collectedj, voltage, dew point, processing tolerance with And and every drier and air compressor machine connected mode；
103) pressure, volume and the connected mode with dryer export of power plant's air accumulator are collected.
In the present embodiment, step 2) the preceding air compressor plant supply gas pressure curve of middle measurement power plant air compressor energy-saving integration transformation When, pressure monitoring sensor is installed in instrument air accumulator to instrument supply main pipe junction, continuously measures and records in one week Instrument supply gas pressure curve；Pressure monitoring sensor, continuous measurement are installed in ash disposal air accumulator to ash disposal supply main pipe junction And record the ash disposal supply gas pressure curve in one week.Passed using mixedly air accumulator to supply main pipe junction installation pressure monitoring is used mixedly Sensor, continuously measures and records in one week and use mixedly supply gas pressure curve.
In the present embodiment, step 3) in when establishing new air compressor plant of power plant energy saving integrated modification scheme, new clothes first If a platforms centrifugal air compressor is as base lotus, i.e. compressed air main power source, drier chooses compression residual heat regenerating side Formula；Then on the premise of ensureing air demand, original b platforms exhaust end base of oil injection threaded bolt type or piston type air compressor is kept to be used as auxiliary standby Power source, its main function is peak regulation, and drying mode chooses zero-emission regeneration；C platform 380V voltage class is finally chosen to become The stability of frequency air compressor machine regulation air compressor plant supply gas pressure, i.e., lotus effect is filled out in peak clipping, and is rear class instrument, ash disposal, is used mixedly gas Constant supply gas pressure is provided, its correspondence drier chooses zero-emission regeneration；Wherein air compressor machine base lotus number of units a, is aided in standby With dynamic number of units b, the specific calculation procedures of peak load shifting frequency conversion air compressor number of units c are as follows：
301) calculating the effective air demand of whole air compressor plant before transformation isWherein ηiFor transformation before with Gas consumption rate when drier corresponding to every air compressor machine regenerates；
302) centrifugal air compressor base lotus number of unitsWherein a take decimal point neglect after integer, the centrifugation of every high efficiency Formula air compressor tolerance is Qd, rated power is Pd；
303) auxiliary standby screw or piston type air compressor number of unitsWherein n is pneumatics board before transformation Number；
304) peak load shifting 380V low-voltage variable frequencies air compressor machine number of units c=1, its rated power is Pe。
In the present embodiment, above-mentioned steps 4) in the transformation Economic and Efficiency Analysis of air compressor machine energy saving integrated comprise the following steps：
401) the air compressor machine consumption electricity charge before energy saving integrated transformation
Wherein, $BeforeFor air compression station consumption total electricity bill, member before transformation；θ is electricity Unit Price, member/kWh；N is pneumatics before transformation Board number, m is drier number of units, P before transformationiFor air compressor machine rated power, kW before transformation；TiOpened for air compressor machine whole year before transformation Machine time, h；PjFor drier rated power, kW before transformation；αjTo transform preceding drier regeneration times, times/day；βjBefore transformation Drier regeneration is time-consuming every time to be counted, h/ times；djFor annual start number of days, day before transformation；
402) the air compressor machine consumption electricity charge after new power plant's air compressor energy-saving integration transformation
Wherein, $AfterwardsTotal electricity bill, member are consumed for air compression station after transformation；PdFor centrifugal air compressor rated power, kW；TdTo change Make rear centrifugal air compressor annual available machine time, h；PiFor original air compressor machine rated power, kW after transformation；TiTo be original after transformation Air compressor machine available machine time whole year, h；WjFor drier heater power ratings, kW after transformation；EjFor drier blower fan volume after transformation Determine power, kW；λjFor drier regeneration times after transformation, times/day；γjCounted for drier regeneration after transformation is time-consuming every time, h/ times； μjFor annual start number of days, day after transformation；PeFor frequency conversion air compressor rated frequency, kW after transformation；TeFor frequency conversion air compressor after transformation Annual available machine time, h；WeFor frequency conversion air compressor correspondence drier heater power ratings, kW after transformation；EeFor frequency conversion after transformation Air compressor machine correspondence drier blower fan rated power, kW；λeDrier regeneration times are corresponded to for frequency conversion air compressor after transformation, times/day； γeCounted for the regeneration of frequency conversion air compressor correspondence drier is time-consuming every time after transformation, h/ times；μeIt is dry for frequency conversion air compressor correspondence after transformation Drying prescription whole year start number of days, day；
403) air compressor machine year saving economic benefit isBefore- $Afterwards, energy-conservation ratioPay off period isWherein $ThrowFor investment for trnasforming urban land cost.
In the present embodiment, step 5) in air compressor plant supply gas pressure after the new power plant's air compressor energy-saving integration transformation of measurement Curve method and the step 2) it is similar, contrast transforms forward and backward instrument use, ash disposal, uses mixedly air pressure force curve, improved supply pressure Force curve relatively transform before should smooth steady, and provide for rear class gas equipment the source of the gas of high-quality.
In the present embodiment, step 4) pressure value has been previously set in peak load shifting 380V low-voltage variable frequency air compressor machines, when supply pressure When power is higher than setup pressure value, reduces pressure by reducing rotational speed of air compressor, to reach setup pressure value, work as supply gas pressure During less than setup pressure value, pressure is increased by increasing rotational speed of air compressor, is rear class gas equipment by peak load shifting means Realize constant pressure air feeding；The step 4) centrifugal drier, without additionally configuration heater and blower fan, utilizes centrifugal compressor Gas own temperature realizes that drier regeneration cycle is used.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (7)

1. a kind of new air compressor plant of power plant energy saving integrated remodeling method, it is characterised in that comprise the following steps：
1) air compressor plant firsthand information before repowering is collected, waits to enter step 2 after the completion of collecting)；
2) air compressor plant supply gas pressure curve before the integration transformation of measurement power plant air compressor energy-saving, and enter step 3)；
3) new air compressor plant of power plant energy saving integrated modification scheme is established, and enters step 4)；
4) air compressor energy-saving integration transformation Economic and Efficiency Analysis, and enter step 5)；
5) air compressor plant supply gas pressure curve after new power plant's air compressor energy-saving integration transformation is measured, and enters step 6)；
6) forward and backward air compressor plant of the power plant supply gas pressure curve of contrast transformation, into step 7)；
7) new air compressor plant of power plant energy saving integrated transformation terminates.
2. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step Air compressor plant firsthand information before rapid 1) middle collection repowering, it is comprised the following steps that：
101) the original air compressor plant air compressor machine number of units n of power plant, model, power P are collectedi, voltage, flow Qi, pressure and whole year open Machine time Ti；
102) the original air compressor plant drier number of units m of power plant, model, power P are collectedj, voltage, dew point, processing tolerance and and every The connected mode of platform drier and air compressor machine；
103) pressure, volume and the connected mode with dryer export of power plant's air accumulator are collected.
3. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step Before rapid 2) middle measurement power plant air compressor energy-saving integration transformation during air compressor plant supply gas pressure curve, in instrument air accumulator to instrument Supply main pipe junction and pressure monitoring sensor is installed, continuously measure and record the instrument supply gas pressure curve in one week；Except Pressure monitoring sensor is installed in grey air accumulator to ash disposal supply main pipe junction, continuously measures and records the supply of the ash disposal in one week Pressure curve；Pressure monitoring sensor is installed using mixedly air accumulator to supply main pipe junction is used mixedly, continuously measures and records one Supply gas pressure curve is used mixedly in week.
4. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step During new air compressor plant of the power plant energy saving integrated modification scheme of rapid 3) middle establishment, installing a platform centrifugal air compressors new first As base lotus, i.e. compressed air main power source, drier chooses compression residual heat regenerating mode；Then the premise of air demand is ensured Under, keep original b platforms exhaust end base of oil injection threaded bolt type or piston type air compressor as auxiliary standby power source, it act as peak regulation, do Dry mode chooses zero-emission regeneration；Finally choose c platform 380V voltage class frequency conversion air compressor regulation air compressor plant supply pressure The stability of power, i.e. peak clipping fill out lotus effect, and are rear class instrument, ash disposal, use mixedly air lift for constant supply gas pressure, and its correspondence is dry Dry device chooses zero-emission regeneration；Wherein air compressor machine base lotus number of units a, auxiliary standby moves number of units b, peak load shifting frequency conversion air compressor The specific calculation procedures of number of units c are as follows：
301) calculating the effective air demand of whole air compressor plant before transformation isWherein ηiFor transformation before with every Gas consumption rate when drier corresponding to air compressor machine regenerates；
302) centrifugal air compressor base lotus number of unitsWherein a take decimal point neglect after integer, the centrifugal sky of every high efficiency Air compressor tolerance is Qd, rated power is Pd；
303) auxiliary standby screw or piston type air compressor number of unitsWherein n is air compressor machine number of units before transformation；
304) peak load shifting 380V low-voltage variable frequencies air compressor machine number of units c=1, its rated power is Pe。
5. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step It is rapid 4) in air compressor machine energy saving integrated transformation Economic and Efficiency Analysis comprise the following steps：
401) the air compressor machine consumption electricity charge before energy saving integrated transformation
Wherein, $BeforeFor air compression station consumption total electricity bill, member before transformation；θ is electricity Unit Price, member/kWh；N is pneumatics board before transformation Number, m is drier number of units, P before transformationiFor air compressor machine rated power, kW before transformation；TiFor when air compressor machine whole year starts shooting before transformation Between, h；PjFor drier rated power, kW before transformation；αjTo transform preceding drier regeneration times, times/day；βjTo be dried before transformation Device regeneration is time-consuming every time to be counted, h/ times；djFor annual start number of days, day before transformation；
402) the air compressor machine consumption electricity charge after new power plant's air compressor energy-saving integration transformation
Wherein, $AfterwardsTotal electricity bill, member are consumed for air compression station after transformation；PdFor centrifugal air compressor rated power, kW；TdAfter transformation Centrifugal air compressor available machine time whole year, h；PiFor original air compressor machine rated power, kW after transformation；TiFor original pneumatics after transformation Machine available machine time whole year, h；WjFor drier heater power ratings, kW after transformation；EjFor the specified work(of drier blower fan after transformation Rate, kW；λjFor drier regeneration times after transformation, times/day；γjCounted for drier regeneration after transformation is time-consuming every time, h/ times；μjFor Annual start number of days, day after transformation；PeFor frequency conversion air compressor rated frequency, kW after transformation；TeIt is annual for frequency conversion air compressor after transformation Available machine time, h；WeFor frequency conversion air compressor correspondence drier heater power ratings, kW after transformation；EeFor frequency conversion pneumatics after transformation Machine correspondence drier blower fan rated power, kW；λeDrier regeneration times are corresponded to for frequency conversion air compressor after transformation, times/day；γeFor The regeneration of frequency conversion air compressor correspondence drier is time-consuming every time after transformation counts, h/ times；μeFor frequency conversion air compressor correspondence drier after transformation Whole year start number of days, day；
403) air compressor machine year saving economic benefit isBefore- $Afterwards, energy-conservation ratioPay off period isIts Middle $ThrowFor investment for trnasforming urban land cost.
6. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step Air compressor plant supply gas pressure curve method and the step 2 after the rapid new power plant's air compressor energy-saving integration transformation of 5) middle measurement) It is identical, contrast the forward and backward instrument use of transformation, ash disposal, use mixedly air pressure force curve, improved supply gas pressure curve is smoothly steady before relatively transforming Calmly, and for rear class gas equipment the source of the gas of high-quality is provided.
7. a kind of new air compressor plant of power plant energy saving integrated remodeling method according to claim 1, it is characterised in that step Pressure value has been previously set in rapid 3) peak load shifting 380V low-voltage variable frequency air compressor machines, when supply gas pressure is higher than setup pressure value, leads to Cross reduction rotational speed of air compressor to reduce pressure, to reach setup pressure value, when supply gas pressure is less than setup pressure value, pass through Increase rotational speed of air compressor to increase pressure, be that rear class gas equipment realizes constant pressure air feeding by peak load shifting means；Step 3) from Core type drier realizes that drier regenerates without additionally configuration heater and blower fan using centrifugal compressor gas own temperature Recycle.
CN201710326480.4A 2017-05-10 2017-05-10 A kind of air compressor plant, power plant energy saving integrated remodeling method Active CN107228065B (en)

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