CN101196290A - Optimizing and guiding system for coal-burned industrial boiler operation - Google Patents
Optimizing and guiding system for coal-burned industrial boiler operation Download PDFInfo
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Abstract
A coal-fired industrial boiler operating optimizing and guiding system in the field of energy-saving technology is provided, which comprises: a data communicating interface, a data processing module, a system display module, a boiler real-time efficiency processing module and an operation optimize and guide module; wherein, the data communicating interface accepts real-time operating data from a boiler control system and transfers to the data processing module which can check and filter the data received; the boiler real-time efficiency processing module processes and achieves the heat lose of boiler smoke discharge and incomplete physical burning and boiler real-time efficiency and then transfers to the operating optimize and guide module and the system display module to compare the upper limit value with the lower limit value of real-time air coal and the best air coal of the boiler; meanwhile, compare the temperature high limit of smoke discharged surveyed with that of the boiler and transfer the result to the system display module as well as send out operating and guide operational command; the system display module is responsible for displaying data. The invention is able to improve the efficiency of boiler.
Description
Technical field
The present invention relates to a kind of system of field of energy-saving technology, specifically is a kind of optimizing and guiding system for coal-burned industrial boiler operation.
Background technology
Existing coal-burned industrial boiler, because coal is different and the difference of the different type of furnaces, boiler can not be under the design conditions in actual moving process and move, thereby boiler operating efficiency can differ greatly.And the operation of industry coal-boiler is at present operated according to operations staff individual's experience fully, and the randomness of operation is very big, and the Industrial Boiler actual operating efficiency is generally lower.Detect the instrument of being installed at coal-burned industrial boiler at present, can only demonstrate the variation of boiler operating parameter, can not reflect the actual operating efficiency of boiler and the size of every loss.Boiler control system also only plays the effect that guarantees safe operation of the boiler, and boiler optimization is moved, raises the efficiency without any directive function.
Find through literature search prior art, " based on the real-time monitoring and the operation optimum management system of real time data platform " that Zhou Yuanbing etc. deliver on " modern electric " (the 23rd volume the 2nd phase 88-91 page or leaf April in 2006), this article is only monitored and online processing in real time at every operational factor of large electric power plant unit and performance indications, has specifically comprised data acquisition check, unit performance processing, performance monitoring, energy loss analysis and operation optimization Operating Guideline.This article is to analyze and handle at the performance of generating set, and the whole generating unit as optimizing object, can not be solved the coal-burned industrial boiler operation optimization problem.In addition, its weak point also is not solve the problem that the coal-burning boiler Real time Efficiency is handled and fuel value change back is revised, the energy loss analysis departs from a reference value as foundation according to key parameter, and a reference value of key parameter under different operating conditions is difficult to determine, it is not strong to the operability of coal-burning boiler to obtain moving the optimization Operating Guideline thus.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of optimizing and guiding system for coal-burned industrial boiler operation has been proposed, but make it according to coal-burned industrial boiler operating parameter and real-time running data and boiler operatiopn characteristic, the coal-burned industrial boiler real time execution is monitored and optimized, effectively instruct operations staff's operation, make boiler under different running statuses, keep operational efficiency the highest.
The present invention is achieved through the following technical solutions, the present invention includes: data communication interface, data processing module, system's display module, boiler Real time Efficiency processing module and operation optimization are instructed module, wherein:
Data communication interface links to each other with the boiler control system data-interface, from boiler control system, accept real-time running data, service data comprises fire-grating motor speed, blower variable frequency rotating speed, exhaust gas temperature, drum pressure and steam flow, pressure, temperature, and gives data processing module with these transfer of data;
Data processing module is tested by the data that receive and filtering is handled, and gives boiler Real time Efficiency processing module and system's display module with the transfer of data after handling;
Boiler Real time Efficiency processing module receives through the data after the data processing module processing, processing draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency, and result is transferred to operation optimizes and to instruct module and system's display module;
Operation optimization is instructed the result of module according to boiler Real time Efficiency processing module, processing draws the real-time coal-air ratio under the operating load state, optimum coal-air ratio upper lower limit value, actual measurement exhaust gas temperature, exhaust gas temperature ceiling value, real-time coal-air ratio and optimum coal-air ratio upper lower limit value are compared, to survey exhaust gas temperature and the exhaust gas temperature ceiling value compares, two kinds of comparative results are transferred to system's display module, and send the operation instruction operational order;
System's display module is responsible for the data after the video data processing module is handled, boiler Real time Efficiency processing module is handled every heat loss of boiler and the real-time boiler efficiency that obtains, and operation optimization is instructed coal-air ratio comparative result, exhaust gas temperature comparative result, the operation instruction operational order of module.
Described boiler Real time Efficiency processing module comprises: heat output of fuel correcting process submodule, theoretical air requirement and exhaust gas volumn processing sub, slag unburned combustible in fly ash processing sub, the every loss processing sub of boiler, wherein:
Heat output of fuel correcting process submodule receives steam flow, the drum pressure data that data processing module sends, and heat output of fuel is revised, and revised heat output of fuel is transferred to theoretical air requirement and exhaust gas volumn processing sub;
Theoretical air requirement and exhaust gas volumn processing sub receive the heat output of fuel correction value data of heat output of fuel correcting process submodule transmission, and accept the blower variable frequency rotary speed data that data processing module sends, obtain theoretical air requirement and exhaust gas volumn, and theoretical air requirement passed to slag unburned combustible in fly ash processing sub, exhaust gas volumn is transferred to the every loss processing sub of boiler;
Slag unburned combustible in fly ash processing sub receives the data of theoretical air requirement and the transmission of exhaust gas volumn processing sub, calculates the slag unburned combustible in fly ash and data are passed to the every loss processing sub of boiler;
The every loss processing sub of boiler receives the exhaust gas volumn and the slag unburned combustible in fly ash of theoretical air requirement and exhaust gas volumn processing sub and the transmission of slag unburned combustible in fly ash processing sub respectively, draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency.
Module is instructed in described operation optimization, comprising: coal-air ratio optimal value processing sub, exhaust gas temperature ceiling value processing sub and real time execution Operating Guideline submodule, wherein:
Coal-air ratio optimal value processing sub receives correction fuel quantity calorific capacity, theoretical air requirement, blower variable frequency rotating speed and the fire-grating motor speed of boiler Real time Efficiency processing module transmission, draw real-time coal-air ratio and the optimum coal-air ratio upper lower limit value of boiler under corresponding steam flow, and be transferred to real time execution Operating Guideline submodule;
Exhaust gas temperature ceiling value processing sub receives the correction fuel quantity calorific capacity of boiler Real time Efficiency processing module transmission, draws real-time exhaust gas temperature and the exhaust gas temperature ceiling value of boiler under corresponding steam flow, and is transferred to real time execution Operating Guideline submodule;
Real time execution Operating Guideline submodule receives the result of coal-air ratio optimal value processing sub and exhaust gas temperature ceiling value processing sub, optimum coal-air ratio upper lower limit value under real-time coal-air ratio numerical value and the corresponding Boiler Steam flow is compared, when being higher than under the corresponding load, coal-air ratio numerical value prescribes a time limit on the optimum coal-air ratio, send and reduce the blower variable frequency rotary speed instruction, make coal-air ratio numerical value fall into optimum coal-air ratio interval, otherwise sending increases the blower variable frequency rotary speed instruction; To survey exhaust gas temperature simultaneously and the exhaust gas temperature ceiling value compares, and when exhaust gas temperature is higher than the exhaust gas temperature ceiling value, send the too high warning of exhaust gas temperature, the prompting operations staff changes operation maybe needs maintenance.
When the present invention works, data communication interface receives the boiler operatiopn real time data of boiler control system transmission, after data processing module check and filtering processing, on system's display module technological process picture, show service data, simultaneously relevant data is transferred to boiler Real time Efficiency processing module, this module is at first revised heat output of fuel, based on fuel caloric value again, draw theoretical air requirement and exhaust gas volumn, extrapolate slag unburned combustible in fly ash under the operating condition simultaneously, draw the every heat loss of boiler real time execution thereby can handle; Operation optimization instructs module to accept the every loss of boiler real time execution and other data that boiler Real time Efficiency processing module is handled out, calculate the coal-air ratio under the operation conditions, and relatively with itself and optimum coal-air ratio upper lower limit value, the exhaust gas temperature ceiling value that actual measurement exhaust gas temperature and processing are drawn compares, when coal-air ratio and exhaust gas temperature exceed the optimal value scope, on system's display module picture, provide warning, and point out corresponding Operating Guideline.As long as the coal-air ratio of assurance actual motion and exhaust gas temperature can guarantee the boiler operating efficiency optimum in the optimal value scope, play fuel-saving effect.
Compared with prior art, the present invention has following beneficial effect: the present invention has taken into full account the operation characteristic of architectural characteristic, fuel characteristic and the subsidiary engine equipment of coal-burned industrial boiler, coal-burned industrial boiler operation is monitored in real time and optimized, and provide the optimization Operating Guideline to the boiler operatiopn personnel, thereby reach the raising boiler efficiency, fuel-saving purpose.Instruct boiler operatiopn at optimum state by optimization of the present invention, on average improve boiler operating efficiency 2%.
Description of drawings
Fig. 1 is a system architecture diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Present embodiment is applied to a 20t/h coal-burned industrial boiler, about 20000 tons of the coal consumption in 1 year of boiler.
As shown in Figure 1, present embodiment comprises five modules: data communication interface, data processing module, system's display module, boiler Real time Efficiency processing module and operation optimization are instructed module,
Wherein: data communication interface links to each other with the boiler control system data-interface, from boiler control system, accept real-time running data, service data comprises fire-grating motor speed, blower variable frequency rotating speed, exhaust gas temperature, drum pressure and steam flow, pressure, temperature, and gives data processing module with these transfer of data;
Data processing module is tested by the data that receive and filtering is handled, and gives boiler Real time Efficiency processing module and system's display module with the transfer of data after handling;
Boiler Real time Efficiency processing module receives through the data after the data processing module processing, processing draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency, and result is transferred to operation optimizes and to instruct module and system's display module;
Operation optimization is instructed the result of module according to boiler Real time Efficiency processing module, processing draws the real-time coal-air ratio under the operating load state, optimum coal-air ratio upper lower limit value, actual measurement exhaust gas temperature, exhaust gas temperature ceiling value, real-time coal-air ratio and optimum coal-air ratio upper lower limit value are compared, to survey exhaust gas temperature and the exhaust gas temperature ceiling value compares, two kinds of comparative results are transferred to system's display module, and send the operation instruction operational order;
System's display module is responsible for the data after the video data processing module is handled, boiler Real time Efficiency processing module is handled every heat loss of boiler and the real-time boiler efficiency that obtains, and operation optimization is instructed coal-air ratio comparative result, exhaust gas temperature comparative result, the operation instruction operational order of module.
Described boiler Real time Efficiency processing module comprises: heat output of fuel correcting process submodule, theoretical air requirement and exhaust gas volumn processing sub, slag unburned combustible in fly ash processing sub, the every loss processing sub of boiler, wherein:
Heat output of fuel correcting process submodule receives steam flow, the drum pressure data that data processing module sends, and heat output of fuel is revised, and revised heat output of fuel is transferred to theoretical air requirement and exhaust gas volumn processing sub;
Theoretical air requirement and exhaust gas volumn processing sub receive the heat output of fuel correction value data of heat output of fuel correcting process submodule transmission, and accept the blower variable frequency rotary speed data that data processing module sends, draw theoretical air requirement and exhaust gas volumn, and theoretical air requirement passed to slag unburned combustible in fly ash processing sub, exhaust gas volumn is transferred to the every loss processing sub of boiler.
Slag unburned combustible in fly ash processing sub receives the data of theoretical air requirement and the transmission of exhaust gas volumn processing sub, calculates the slag unburned combustible in fly ash and data are passed to the every loss processing sub of boiler;
The every loss processing sub of boiler receives the exhaust gas volumn and the slag unburned combustible in fly ash of theoretical air requirement and exhaust gas volumn processing sub and the transmission of slag unburned combustible in fly ash processing sub respectively, draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency.
Module is instructed in described operation optimization, comprising: coal-air ratio optimal value processing sub, exhaust gas temperature ceiling value processing sub and real time execution Operating Guideline submodule, wherein:
Coal-air ratio optimal value processing sub receives correction fuel quantity calorific capacity, theoretical air requirement, blower variable frequency rotating speed and the fire-grating motor speed of boiler Real time Efficiency processing module transmission, draw real-time coal-air ratio and the optimum coal-air ratio upper lower limit value of boiler under corresponding steam flow, difference according to steam flow, optimum coal-air ratio higher limit is between 10 to 12.5, lower limit and is transferred to real time execution Operating Guideline submodule between 8 to 10.5;
Exhaust gas temperature ceiling value processing sub receives the correction fuel quantity calorific capacity of boiler Real time Efficiency processing module transmission, draw real-time exhaust gas temperature and the exhaust gas temperature ceiling value of boiler under corresponding steam flow, the exhaust gas temperature ceiling value is 150 ℃, and is transferred to real time execution Operating Guideline submodule;
Real time execution Operating Guideline submodule receives the result of coal-air ratio optimal value processing sub and exhaust gas temperature ceiling value processing sub, optimum coal-air ratio upper lower limit value under real-time coal-air ratio numerical value and the corresponding load is compared, when being higher than under the corresponding load, coal-air ratio numerical value prescribes a time limit on the optimum coal-air ratio, send and reduce the blower variable frequency rotary speed instruction, make coal-air ratio numerical value fall into optimum coal-air ratio interval, otherwise sending increases the blower variable frequency rotary speed instruction; To survey exhaust gas temperature simultaneously and the exhaust gas temperature ceiling value compares, and when exhaust gas temperature is higher than the exhaust gas temperature ceiling value, send the too high warning of exhaust gas temperature, the prompting operations staff changes operation maybe needs maintenance.
During present embodiment work, data communication interface is accepted the boiler operatiopn real time data of boiler control system transmission, after data processing module check and filtering processing, on system's display module technological process picture, show service data, simultaneously relevant data is transferred to boiler Real time Efficiency processing module, this module is at first revised heat output of fuel, based on fuel caloric value again, handle out theoretical air requirement and exhaust gas volumn, extrapolate slag unburned combustible in fly ash under the operating condition simultaneously, thereby can handle out the every heat loss of boiler real time execution; Operation optimization instructs module to accept the every loss of boiler real time execution and other data that boiler Real time Efficiency processing module is handled out, handle out the coal-air ratio under the operation conditions, and with itself and optimum coal-air ratio upper lower limit value relatively, will the actual measurement exhaust gas temperature with the exhaust gas temperature ceiling value of handling out relatively.Optimum coal-air ratio higher limit is between 10 to 12.5 in the present embodiment, and lower limit is between 8 to 10.5, and corresponding Boiler Steam flow is 5 tons to 20 tons/hour, and the exhaust gas temperature ceiling value is 150 ℃.When coal-air ratio and exhaust gas temperature exceed the optimal value scope, on system's display module picture, provide warning, and point out corresponding Operating Guideline.As long as the coal-air ratio of assurance actual motion and exhaust gas temperature can guarantee the boiler operating efficiency optimum in the optimal value scope, play fuel-saving effect.
Present embodiment optimization is instructed and is guaranteed the 20t/h coal-burned industrial boiler operation at optimum state, on average improves boiler operating efficiency and can save coal-fired 400 tons in 2%, one year, the hundreds thousand of units of fuel savings expense.Present embodiment has taken into full account the operation characteristic of architectural characteristic, fuel characteristic and the subsidiary engine equipment of coal-burned industrial boiler, coal-burned industrial boiler operation is monitored in real time and optimized, and provide the optimization Operating Guideline to the boiler operatiopn personnel, thereby reach the raising boiler efficiency, fuel-saving purpose.
Claims (3)
1. optimizing and guiding system for coal-burned industrial boiler operation comprises: data communication interface, system's display module, data processing module, it is characterized in that also comprise: boiler Real time Efficiency processing module and operation optimization are instructed module, wherein:
Data communication interface links to each other with the boiler control system data-interface, from boiler control system, accept real-time running data, service data comprises fire-grating motor speed, blower variable frequency rotating speed, exhaust gas temperature, drum pressure and steam flow, pressure, temperature, and gives data processing module with these transfer of data;
Data processing module is tested by the data that receive and filtering is handled, and gives boiler Real time Efficiency processing module and system's display module with the transfer of data after handling;
Boiler Real time Efficiency processing module receives through the data after the data processing module processing, processing draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency, and result is transferred to operation optimizes and to instruct module and system's display module;
Operation optimization is instructed the result of module according to boiler Real time Efficiency processing module, processing draws the real-time coal-air ratio under the operating load state, optimum coal-air ratio upper lower limit value, actual measurement exhaust gas temperature, exhaust gas temperature ceiling value, real-time coal-air ratio and optimum coal-air ratio upper lower limit value are compared, to survey exhaust gas temperature and the exhaust gas temperature ceiling value compares, two kinds of comparative results are transferred to system's display module, and send the operation instruction operational order;
System's display module is responsible for the data after the video data processing module is handled, boiler Real time Efficiency processing module is handled every heat loss of boiler and the real-time boiler efficiency that obtains, and operation optimization is instructed coal-air ratio comparative result, exhaust gas temperature comparative result, the operation instruction operational order of module.
2. optimizing and guiding system for coal-burned industrial boiler operation according to claim 1, it is characterized in that, described boiler Real time Efficiency processing module, comprise: heat output of fuel correcting process submodule, theoretical air requirement and exhaust gas volumn processing sub, slag unburned combustible in fly ash processing sub, the every loss processing sub of boiler, wherein:
Heat output of fuel correcting process submodule receives steam flow, the drum pressure data that data processing module sends, and heat output of fuel is revised, and revised heat output of fuel is transferred to theoretical air requirement and exhaust gas volumn processing sub;
Theoretical air requirement and exhaust gas volumn processing sub receive the heat output of fuel correction value data of heat output of fuel correcting process submodule transmission, and accept the blower variable frequency rotary speed data that data processing module sends, obtain theoretical air requirement and exhaust gas volumn, and theoretical air requirement passed to slag unburned combustible in fly ash processing sub, exhaust gas volumn is transferred to the every loss processing sub of boiler;
Slag unburned combustible in fly ash processing sub receives the data of theoretical air requirement and the transmission of exhaust gas volumn processing sub, calculates the slag unburned combustible in fly ash and data are passed to the every loss processing sub of boiler;
The every loss processing sub of boiler receives the exhaust gas volumn and the slag unburned combustible in fly ash of theoretical air requirement and exhaust gas volumn processing sub and the transmission of slag unburned combustible in fly ash processing sub respectively, draws boiler exhaust gas heat loss, the imperfect combustion heat loss of physics and boiler Real time Efficiency.
3. optimizing and guiding system for coal-burned industrial boiler operation according to claim 1, it is characterized in that, module is instructed in described operation optimization, comprising: coal-air ratio optimal value processing sub, exhaust gas temperature ceiling value processing sub and real time execution Operating Guideline submodule, wherein:
Coal-air ratio optimal value processing sub receives correction fuel quantity calorific capacity, theoretical air requirement, blower variable frequency rotating speed and the fire-grating motor speed of boiler Real time Efficiency processing module transmission, draw boiler real-time coal-air ratio and optimum coal-air ratio upper lower limit value under corresponding steam flow, and be transferred to real time execution Operating Guideline submodule;
Exhaust gas temperature ceiling value processing sub receives the correction fuel quantity calorific capacity of boiler Real time Efficiency processing module transmission, draws real-time exhaust gas temperature and the exhaust gas temperature ceiling value of boiler under corresponding steam flow, and is transferred to real time execution Operating Guideline submodule;
Real time execution Operating Guideline submodule receives the result of coal-air ratio optimal value processing sub and exhaust gas temperature ceiling value processing sub, optimum coal-air ratio upper lower limit value under real-time coal-air ratio numerical value and the corresponding Boiler Steam flow is compared, when being higher than under the corresponding load, coal-air ratio numerical value prescribes a time limit on the optimum coal-air ratio, send and reduce the blower variable frequency rotary speed instruction, make coal-air ratio numerical value fall into optimum coal-air ratio interval, otherwise sending increases the blower variable frequency rotary speed instruction; To survey exhaust gas temperature simultaneously and the exhaust gas temperature ceiling value compares, and when exhaust gas temperature is higher than the exhaust gas temperature ceiling value, send the too high warning of exhaust gas temperature, the prompting operations staff changes operation maybe needs maintenance.
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| CN101871655A (en) * | 2010-06-24 | 2010-10-27 | 西安交通大学 | On-line monitoring system for coal-combustion overall process of power station boiler |
| CN102297452A (en) * | 2011-07-21 | 2011-12-28 | 宋群 | Generalized integral boiler combustion optimization energy-saving composite control system |
| CN103197636A (en) * | 2013-03-22 | 2013-07-10 | 广东电网公司电力科学研究院 | Lower control system cooperating with combustion optimization and implementation method thereof |
| CN103268066A (en) * | 2013-03-28 | 2013-08-28 | 广东电网公司电力科学研究院 | Optimization method and device of operation of power station boiler |
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| CN1587820A (en) * | 2004-09-08 | 2005-03-02 | 大连理工大学 | Intelligent control system for boiler and its multiple type of coal control method |
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| CN101871655A (en) * | 2010-06-24 | 2010-10-27 | 西安交通大学 | On-line monitoring system for coal-combustion overall process of power station boiler |
| CN102297452A (en) * | 2011-07-21 | 2011-12-28 | 宋群 | Generalized integral boiler combustion optimization energy-saving composite control system |
| CN103197636A (en) * | 2013-03-22 | 2013-07-10 | 广东电网公司电力科学研究院 | Lower control system cooperating with combustion optimization and implementation method thereof |
| CN103268066A (en) * | 2013-03-28 | 2013-08-28 | 广东电网公司电力科学研究院 | Optimization method and device of operation of power station boiler |
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| CN104252168A (en) * | 2014-09-30 | 2014-12-31 | 中国神华能源股份有限公司 | Intelligent control system of thermal power plant and method implemented in intelligent control system |
| CN104252168B (en) * | 2014-09-30 | 2016-11-23 | 中国神华能源股份有限公司 | Thermal power plant intelligence control system and the method implemented within the system |
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