CN109492820A - A kind of UTILIZATION OF VESIDUAL HEAT IN coupled system multivariable benefit optimization system and method - Google Patents
A kind of UTILIZATION OF VESIDUAL HEAT IN coupled system multivariable benefit optimization system and method Download PDFInfo
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- CN109492820A CN109492820A CN201811375934.8A CN201811375934A CN109492820A CN 109492820 A CN109492820 A CN 109492820A CN 201811375934 A CN201811375934 A CN 201811375934A CN 109492820 A CN109492820 A CN 109492820A
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Abstract
The present invention relates to the controls of boiler exhaust gas UTILIZATION OF VESIDUAL HEAT IN coupled system to run field, particularly discloses a kind of UTILIZATION OF VESIDUAL HEAT IN coupled system multivariable benefit optimization system and method.The present invention increases optimization system in UTILIZATION OF VESIDUAL HEAT IN coupled system operation control system, optimization system includes real-time data acquisition module, coupled system calculation of design parameters module, subsystem A/B operating parameter adjustment computing module, subsystem A/B parameter covariant computing module, coupled system overall efficiency computing module, overall efficiency optimizing judgment module and operation instruction module.Structure of the invention is reasonable, and flexibly, when solving operating parameter deviation design value in UTILIZATION OF VESIDUAL HEAT IN coupled system, overall efficiency cannot reach maximized operation problem for adjustment, ensure that coupled system overall economic efficiency optimizes, is suitable for wide popularization and application.
Description
(1) technical field
The present invention relates to the controls of boiler exhaust gas UTILIZATION OF VESIDUAL HEAT IN coupled system to run field, in particular to a kind of UTILIZATION OF VESIDUAL HEAT IN coupling
System multivariable benefit optimization system and method.
(2) background technique
Currently, domestic thermal power unit boiler smoke discharging residual heat usually realizes cascade utilization, i.e., using more than the smoke evacuation of lower temperature
The heat boiler of heat and partial coagulation water is blown, and the outlet smoke temperature of boiler efficiency and preheater is improved；It recycles higher
The flue gas condensed water of temperature obtains more exclusion function, reduces thermal loss of steam turbine.The two gradient utilization systems utilize simultaneously
Condensed water generates the energy-saving effect completely contradicted to steam bleeding system.It is carried out when coupled system is run according only to the parameter of setting
Control is adjusted, but when operating parameter deviates design value, the parameter of setting fails to adjust therewith, and coupled system is caused usually not exist
It is run under optimum operating condition, is not able to achieve the maximization of coupled system benefit.
Coupled system is influenced by exhaust gas temperature, load, cigarette wind flow, while also being imported and exported working medium by system itself
The influence of temperature, flow etc., and the parameter in coupled system between two subsystems can also be generated and be influenced each other, multivariable
In the presence of influencing each other, so that the determination of optimized operation condition can not be obtained with operations staff's experience.
(3) summary of the invention
The UTILIZATION OF VESIDUAL HEAT IN coupling that in order to compensate for the shortcomings of the prior art, the present invention provides a kind of adjustment flexibly, on-road efficiency is good
System multivariable benefit optimization system and method.
The present invention is achieved through the following technical solutions:
A kind of UTILIZATION OF VESIDUAL HEAT IN coupled system multivariable benefit optimization system, including real-time data acquisition module, it is characterised in that: coupling
Collaboration system is divided into two subsystems A and subsystem B, and subsystem A is sent using low-temperature flue gas and partial coagulation hydro-thermal amount heating boiler
Wind, subsystem B heat steam turbine condensed water using high-temperature flue gas；Real-time data acquisition module connects coupled system design parameter meter
Module is calculated, coupled system calculation of design parameters wired in parallel connects subsystem A operating parameter adjustment computing module and subsystem B fortune
Row parameter adjusts computing module；Subsystem A operating parameter adjusts computing module and subsystem B operating parameter adjustment computing module point
Coupled system entirety is not sequentially connected by subsystem A parameter covariant computing module and system B parameter covariant computing module parallel connection
Benefit calculation module, overall efficiency optimizing judgment module and operation instruction module.
In the present invention, increase optimization system in UTILIZATION OF VESIDUAL HEAT IN coupled system operation control system, optimization system includes real
When data acquisition module, coupled system calculation of design parameters module, subsystem A/B operating parameter adjust computing module, subsystem
A/B parameter covariant computing module, coupled system overall efficiency computing module, overall efficiency optimizing judgment module and operation instruction mould
Block.
The method for carrying out the benefit optimizing of waste heat coupled system multivariable using above system, includes the following steps:
(1) operating parameter monitoring stations are set in subsystem A and subsystem B, unit is acquired by real-time data acquisition module
Real-time running data calculates the design parameter of each subsystem under current operating condition using coupled system calculation of design parameters module
And benefit, and using calculated parameter as the first batch of preset parameter under current working；
(2) variable of two subsystems is set as parameter, adjustment remaining variables balance subsystem, then by previous subsystem
Variable adjusts and the variable of latter subsystem covariant is made to be set as fixed value, carries out latter subsystem EQUILIBRIUM CALCULATION FOR PROCESS, and calculating benefit is
No increase, if desired increases, then continues the parameter for adjusting previous subsystem；
(3) calculating of coupled system comprehensive benefit is carried out, the variation tendency of post analysis optimized parameter is compared, is iterated calculating, really
Determine optimized operation parameter, guidance operation obtains coupled system whole economic efficiency maximum value.
Its preferred technical solution are as follows:
In step (1), first batch of preset parameter be the flue gas flow of coupled system gone out according to heat Balance Calculation, cold flow and
The coupled system cold wind import temperature obtained according to measuring point.
In step (2), specific set-up procedure is as follows: the variable element of (2-1) adaptation system A, and carries out subsystem A's
EQUILIBRIUM CALCULATION FOR PROCESS, (2-2) computing subsystem B is with the covariant operating parameter and system balancing after the variation of subsystem A variable element, (2-
3) it carries out overall efficiency calculating and judges whether benefit increases, such as increase and repeat step (2-2)-(2-3)；(2-4) is adjusted simultaneously
The variable element of subsystem B, and the EQUILIBRIUM CALCULATION FOR PROCESS of subsystem B is carried out, (2-5) computing subsystem A becomes with subsystem B variable element
Covariant operating parameter and system balancing after change, (2-6) overall efficiency calculate and judge whether benefit increases, and such as increase and repeat to walk
Suddenly (2-5)-(2-6).
In the step, variable element is working medium flow and fluid inlet temperature, and covariant operating parameter is outlet cold wind temperature
With sender property outlet temperature.
In step (3), the flow parameter after EQUILIBRIUM CALCULATION FOR PROCESS is set as fixed value, continues to adjust inlet temperature, passes through entirety
Benefit optimizing judgment module carries out overall efficiency optimizing judgement, if not optimal, return step (2), continues to adjust variable element,
If optimal, the variation tendency of system greatest benefit and operational parameter control at a temperature of different load section, varying environment is provided, is made
For operation instruction.
The real-time running data of unit, calculates according to real time data and couples under optimization system acquisition current working of the invention
Flue gas flow, cold flow, cold wind import temperature are set as the non-adjustable fixation of system under current working by the design parameter of system
Parameter respectively with the fluid inlet temperature of subsystem A and working medium flow for adjustable fixed value, then is simulated calculating, is found with varitron
System B using fluid inlet temperature and working medium flow as variable element under optimum efficiency parameter；Simultaneously respectively with the working medium of subsystem B
Inlet temperature and working medium flow are adjustable fixed value, then simulate calculating, find with subsystem A with fluid inlet temperature and working medium
Flow is the optimum efficiency parameter under variable element.Then the adjustable preset parameter of adaptation system A or B are compared, it is final to find most
Good overall efficiency optimum value and operating parameter, and provide operation instruction.
Structure of the invention is reasonable, and adjustment is flexible, when solving operating parameter deviation design value in UTILIZATION OF VESIDUAL HEAT IN coupled system,
Overall efficiency cannot reach maximized operation problem, ensure that coupled system overall economic efficiency optimizes, suitable for pushing away extensively
Wide application.
(4) Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is logical schematic of the invention.
(5) specific embodiment
Attached drawing is a kind of specific embodiment of the invention.The embodiment includes real-time data acquisition module, and coupled system is divided into two
A subsystem A and subsystem B, subsystem A are blown using low-temperature flue gas and partial coagulation hydro-thermal amount heating boiler, subsystem B benefit
Steam turbine condensed water is heated with high-temperature flue gas；Real-time data acquisition module connects coupled system calculation of design parameters module, coupling
System design parameters computing module is connected in parallel subsystem A operating parameter adjustment computing module and the adjustment of subsystem B operating parameter
Computing module；Subsystem A operating parameter adjustment computing module and subsystem B operating parameter adjustment computing module pass through subsystem respectively
System A parameter covariant computing module and system B parameter covariant computing module parallel connection are sequentially connected coupled system overall efficiency and calculate mould
Block, overall efficiency optimizing judgment module and operation instruction module.
The UTILIZATION OF VESIDUAL HEAT IN coupled system of the embodiment is to utilize low-temperature flue gas waste heat and partial coagulation hydro-thermal amount heating boiler
It blows (subsystem A), using high-temperature flue gas waste-heat partial coagulation water (subsystem B), the setting operation ginseng in each subsystem
Number monitoring stations, increase multivariable benefit optimizing module in the operation control system of coupled system.Multivariable benefit optimizing mould
Block (1) acquisition system real time data first, (2) according to parameters such as load, the fuel of boiler controller system, in conjunction with related measuring point data,
Go out the part design parameter of coupled system: flue gas flow, cold flow, and the coupling obtained according to measuring point according to heat Balance Calculation
Collaboration system cold wind import temperature, using these three parameters as the first batch of preset parameter under current working.(3) then respectively by subsystem
The inlet temperature of the working medium of system A, B within the set range, and is set as fixed value in conjunction with measured data, with certain increase and decrease amplitude
Adjust the flow parameter of working medium.Carry out subsystem calculating respectively: (3-1A) subsystem A is according to inlet temperature adjusted and actual measurement
Input gas temperature, EQUILIBRIUM CALCULATION FOR PROCESS export Temperature of Working and exit gas temperature;(3-2A) according to the EQUILIBRIUM CALCULATION FOR PROCESS of subsystem A,
The input gas temperature of subsystem B is obtained, then computing subsystem B is the outlet of input gas temperature needed for reaching subsystem A
Cold wind temperature and sender property outlet temperature.The comprehensive benefit that (3-3A) then carries out coupled system calculates, and judges whether benefit increases,
If increased, the parameter that (3-2A) continues adaptation system B: working medium flow and fluid inlet temperature is returned.(3-1B) subsystem B
According to inlet temperature adjusted, actual measurement import cold wind temperature and setting outlet smoke temperature, EQUILIBRIUM CALCULATION FOR PROCESS export Temperature of Working, into
The import smoke temperature of mouth flue-gas temperature, outlet cold wind temperature and subsystem A;(3-2B) is obtained according to the EQUILIBRIUM CALCULATION FOR PROCESS of subsystem B
The import and export flue-gas temperature of subsystem A, then the sender property outlet temperature of computing subsystem A.(3-3B) then carries out coupled system
Comprehensive benefit calculates, if increased, returns to the parameter that (3-2B) continues adaptation system A: working medium flow and fluid inlet temperature.
(4) coupled system comprehensive benefit analysis is carried out, step (3) is then proceeded to, seeks fluid inlet temperature one and fix, systematic working medium stream
Optimal benefit under amount adjustment.Then the flow in step (3) is set as fixed value, inlet temperature with certain amplitude variation after
It is continuous to adjust, seek flow it is certain under conditions of coupled system optimal benefit.Finally provide different load section, varying environment temperature
The variation tendency of lower system greatest benefit and operational parameter control, as operation instruction.
Claims (6)
1. a kind of UTILIZATION OF VESIDUAL HEAT IN coupled system multivariable benefit optimization system, including real-time data acquisition module, it is characterised in that:
Coupled system is divided into two subsystems A and subsystem B, and subsystem A utilizes low-temperature flue gas and partial coagulation hydro-thermal amount heating boiler
Air-supply, subsystem B heat steam turbine condensed water using high-temperature flue gas；Real-time data acquisition module connects coupled system design parameter
Computing module, coupled system calculation of design parameters wired in parallel connect subsystem A operating parameter adjustment computing module and subsystem B
Operating parameter adjusts computing module；Subsystem A operating parameter adjusts computing module and subsystem B operating parameter adjusts computing module
It is whole that coupled system is sequentially connected by subsystem A parameter covariant computing module and system B parameter covariant computing module parallel connection respectively
Body benefit calculation module, overall efficiency optimizing judgment module and operation instruction module.
2. the method that the benefit optimizing of waste heat coupled system multivariable is carried out using system described in claim 1, it is characterized in that, packet
It includes following steps: operating parameter monitoring stations (1) being set in subsystem A and subsystem B, are adopted by real-time data acquisition module
Collect unit real-time running data, calculates setting for each subsystem under current operating condition using coupled system calculation of design parameters module
Parameter and benefit are counted, and using calculated parameter as the first batch of preset parameter under current working；(2) by the change of two subsystems
Amount is set as parameter, and adjustment remaining variables balance subsystem, then adjust previous subsystem variable and make latter subsystem
The variable of covariant is set as fixed value, carries out latter subsystem EQUILIBRIUM CALCULATION FOR PROCESS, calculates whether benefit increases, and if desired increases, then after
The parameter of the continuous previous subsystem of adjustment；(3) calculating of coupled system comprehensive benefit is carried out, the variation of comparison post analysis optimized parameter becomes
Gesture is iterated calculating, determines optimized operation parameter, and guidance operation obtains coupled system whole economic efficiency maximum value.
3. the method for waste heat coupled system multivariable benefit optimizing according to claim 2, it is characterised in that: step (1)
In, first batch of preset parameter is the flue gas flow of coupled system gone out according to heat Balance Calculation, cold flow and is obtained according to measuring point
The coupled system cold wind import temperature arrived.
4. the method for waste heat coupled system multivariable benefit optimizing according to claim 2, it is characterised in that: step (2)
In, specific set-up procedure is as follows: the variable element of (2-1) adaptation system A, and carries out the EQUILIBRIUM CALCULATION FOR PROCESS of subsystem A, (2-2)
Computing subsystem B carries out overall efficiency with the covariant operating parameter and system balancing after the variation of subsystem A variable element, (2-3)
It calculates and judges whether benefit increases, such as increase and repeat step (2-2)-(2-3)；The variable ginseng of (2-4) while adaptation system B
Number, and the EQUILIBRIUM CALCULATION FOR PROCESS of subsystem B is carried out, the covariant after (2-5) computing subsystem A changes with subsystem B variable element is run
Parameter and system balancing, (2-6) overall efficiency calculate and judge whether benefit increases, and such as increase and repeat step (2-5)-(2-6).
5. the method for waste heat coupled system multivariable benefit optimizing according to claim 2, it is characterised in that: step (3)
In, the flow parameter after EQUILIBRIUM CALCULATION FOR PROCESS is set as fixed value, continues to adjust inlet temperature, passes through overall efficiency optimizing judgment module
Overall efficiency optimizing judgement is carried out, if not optimal, return step (2), continues adjustment variable element and provide not if optimal
With the variation tendency of system greatest benefit and operational parameter control at a temperature of load section, varying environment, as operation instruction.
6. the method for waste heat coupled system multivariable benefit optimizing according to claim 4, it is characterised in that: step (2)
In, variable element is working medium flow and fluid inlet temperature, and covariant operating parameter is outlet cold wind temperature and sender property outlet temperature.
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| CN201811375934.8A CN109492820B (en) | 2018-11-19 | 2018-11-19 | Multivariable benefit optimizing system and method for waste heat utilization coupling system |
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| CN201811375934.8A CN109492820B (en) | 2018-11-19 | 2018-11-19 | Multivariable benefit optimizing system and method for waste heat utilization coupling system |
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| US20130041483A1 (en) * | 2005-12-21 | 2013-02-14 | Neuco, Inc. | System and method for multi-unit optimization of boiler and scr operations |
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