CN103712195B - A kind of flue-gas temperature control method, Apparatus and system - Google Patents
A kind of flue-gas temperature control method, Apparatus and system Download PDFInfo
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- CN103712195B CN103712195B CN201410004247.0A CN201410004247A CN103712195B CN 103712195 B CN103712195 B CN 103712195B CN 201410004247 A CN201410004247 A CN 201410004247A CN 103712195 B CN103712195 B CN 103712195B
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Abstract
The invention provides a kind of flue-gas temperature control method, Apparatus and system, wherein, method comprises: receive boiler load signal as feed-forward signal; Receive the turbid ity signal of house outlet as feedback signal; Conditioning signal is generated according to feed-forward signal and feedback signal; Regulate the water yield size on heat-exchanging loop by conditioning signal and regulate the method for operation and the parameter of deduster control appliance.Regulated the size of the water yield on heat-exchanging loop by conditioning signal, regulate the temperature of flue gas, simultaneously according to the method for operation and the parameter of conditioning signal adjustment deduster control appliance.The flue-gas temperature of deduster entrance directly can affect the operating efficiency of deduster, and the flue-gas temperature of deduster entrance can not be too high.In order to realize the reduction of discharging of environmental protection, also needing the turbidity limiting house outlet, in the present embodiment, the turbidity of house outlet being carried out closed-loop control as the feedback information that priority is the highest.Both take into account the duty of flue gas waste heat utilization device, consider again the duty of deduster.
Description
Technical field
The present invention relates to energy-conserving and environment-protective control technology field, particularly a kind of flue-gas temperature control method, Apparatus and system.
Background technology
In prior art, heat power plant boiler is due to actual coal-fired and design coal deviation to some extent, and the reasons such as unit is aging cause exhaust gas temperature up to 130 DEG C-150 DEG C; Flue gas waste heat utilization device (also known as low-level (stack-gas) economizer) can be installed additional like this at air preheater and deduster porch.
Flue gas waste heat utilization device only considers Mist heat recovering, and does not consider the impact on downstream deduster.If because the cigarette temperature of deduster entrance is too high, the fly ash resistivity in deduster is 10
11~ 10
12between Ω cm; The spark discharge that so easy appearance is violent, the unfavorable operating mode such as inverse corona, the operating efficiency of deduster is not good.
After flue gas waste heat utilization device has reclaimed heat, although make flue-gas temperature reduce, be conducive to the work of gathering dust of deduster, not necessarily make deduster be operated in optimum Working.Deduster long-term work, under off-design operating mode, will have a strong impact on efficiency of dust collection and the service life of deduster.
In order to solve above technical problem, there are following two kinds of solutions at present:
The first: the flue-gas temperature detecting deduster entrance, controls the water yield sprayed in deduster inlet flue duct according to the flue-gas temperature measured, reduce the flue-gas temperature of deduster entrance, more manually adjust the running parameter of deduster;
The second: the flue-gas temperature detecting deduster entrance, directly regulates the operational factor of deduster control appliance according to the flue-gas temperature measured.
Above two kinds of methods all can not make deduster be operated in preferably duty, and flue gas waste heat utilization device can not be made to be operated in preferably duty.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flue-gas temperature control method, Apparatus and system, and flue gas waste heat utilization device and deduster can be made to be operated in preferably duty.
The embodiment of the present invention provides a kind of flue-gas temperature control method, comprises the following steps:
Receive boiler load signal as feed-forward signal;
Receive the turbid ity signal of house outlet as feedback signal;
Conditioning signal is generated according to described feed-forward signal and feedback signal;
Regulate the water yield size on heat-exchanging loop by described conditioning signal and regulate the method for operation and the parameter of deduster control appliance.
Preferably, described feedback signal also comprises: the entrance flue gas temperature signal of flue gas waste heat utilization device and exit gas temperature signal.
Preferably, the described water yield size regulated by described conditioning signal on heat-exchanging loop, is specially:
By the size regulating the aperture of electric control valve on heat-exchanging loop or the frequency of freq uency conversion supercharging pump to regulate the water yield on heat-exchanging loop;
The described method of operation and the parameter being regulated deduster control appliance by conditioning signal, is specially:
Regulate the method for operation and the current limitation of deduster mesohigh control appliance.
Preferably, described according to described feed-forward signal and feedback signal generation conditioning signal, be specially:
Described feed-forward signal and feedback signal are generated conditioning signal through fuzzy-adaptation PID control.
Preferably, also comprise: receive the water yield signal of flue gas waste heat utilization device import and the water yield signal of flue gas waste heat utilization device discrepancy;
When the water yield signal of described flue gas waste heat utilization device import and the water yield signal of flue gas waste heat utilization device outlet occur abnormal, report to the police.
The embodiment of the present invention also provides a kind of flue gas temperature regulating device, comprising: feed-forward signal receiver module, feedback signal reception module, conditioning signal generation module and control module;
Described feed-forward signal receiver module, for receiving boiler load signal, described boiler load signal is as feed-forward signal;
Described feedback signal reception module, for receiving the turbid ity signal of house outlet, described turbid ity signal is as feedback signal;
Described conditioning signal generation module, for generating conditioning signal according to described feed-forward signal and described feedback signal;
Described control module, for being regulated the water yield size on heat-exchanging loop and the method for operation and the parameter that regulate deduster control appliance by described conditioning signal.
Preferably, also comprise: entrance flue gas temperature detection module and exit gas temperature detection module;
Described entrance flue gas temperature detection module, for detecting flue gas waste heat utilization device entrance flue gas temperature, generates flue gas waste heat utilization device entrance flue gas temperature signal;
Described exit gas temperature detection module, for detecting flue gas waste heat utilization device exit gas temperature, generates flue gas waste heat utilization device exit gas temperature signal;
Described feedback signal reception module, also for receiving entrance flue gas temperature signal and the exit gas temperature signal of described flue gas waste heat utilization device.
Preferably, described control module comprises control submodule, for the size by regulating the aperture of electric control valve on heat-exchanging loop or the frequency of freq uency conversion supercharging pump to regulate the water yield on heat-exchanging loop, also for regulating the method for operation and the current limitation of deduster high voltage control equipment.
The embodiment of the present invention also provides a kind of smoke temperature adjusting system, comprising: flue gas waste heat utilization device, deduster, boiler and controller;
Described flue gas waste heat utilization device, exports to described deduster after the flue gas of boiler emission is carried out waste heat recovery;
Described deduster, carries out dust removal process for the flue gas exported by described flue gas waste heat utilization device;
Described controller, for receiving boiler load signal as feed-forward signal; Receive the turbid ity signal of house outlet as feedback signal; Conditioning signal is generated according to described feed-forward signal and feedback signal; Regulate the water yield size in flue gas waste heat utilization device on heat-exchanging loop by described conditioning signal and regulate the method for operation and the current limitation of deduster high voltage control equipment.
Preferably, described feedback signal also comprises: the entrance flue gas temperature signal of flue gas waste heat utilization device and exit gas temperature signal;
Described turbid ity signal is obtained by the flue dust transmissometer or the measurement of dust concentration instrument being arranged on house outlet;
The entrance flue gas temperature signal of described flue gas waste heat utilization device and exit gas temperature signal are obtained by the temperature element measurement of the temperature element and outlet that are separately positioned on flue gas waste heat utilization device entrance.
Compared with prior art, the present invention has the following advantages:
Boiler load signal is passed through as feed-forward signal in the present embodiment, and the turbid ity signal of house outlet realizes the closed-loop control of flue-gas temperature as feedback signal, conditioning signal is generated by feed-forward signal and feedback signal, the size of the water yield in flue gas waste heat utilization device on heat-exchanging loop is regulated by conditioning signal, thus regulate the temperature of flue gas, simultaneously according to the method for operation and the parameter of conditioning signal adjustment deduster control appliance.Flue-gas temperature due to deduster entrance directly can affect the operating efficiency of deduster, and therefore, the flue-gas temperature of deduster entrance can not be too high.In addition, in order to realize the reduction of discharging of environmental protection, also needing the turbidity limiting house outlet, in the present embodiment, the turbidity of house outlet being carried out closed-loop control as the feedback information that priority is the highest.Both take into account the duty of flue gas waste heat utilization device, consider again the duty of deduster.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is flue-gas temperature control method embodiment one flow chart provided by the invention;
Fig. 2 is flue-gas temperature control method embodiment two flow chart provided by the invention;
Fig. 3 is flue gas temperature regulating device embodiment one schematic diagram provided by the invention;
Fig. 4 is flue gas temperature regulating device embodiment two schematic diagram provided by the invention;
Fig. 5 is smoke temperature adjusting system embodiment one schematic diagram provided by the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment of the method one:
See Fig. 1, this figure is flue-gas temperature control method embodiment one flow chart provided by the invention.
The flue-gas temperature control method that the present embodiment provides, comprises the following steps:
S101: receive boiler load signal as feed-forward signal;
It should be noted that, boiler load signal is generally directly obtained by boiler control system, the controller that boiler load signal sends to flue gas waste heat utilization device corresponding by boiler control system.
In the present embodiment using boiler load signal as feed-forward signal because the unit of boiler is in different size, the load of operation is different, and boiler operatiopn operating mode is also different, and correspondingly corresponding flue-gas temperature is not identical with the water yield yet.Such as, the unit of boiler can be 200MW unit, 300MW unit or 600MW unit.
Generally, the load of boiler is metastable, using boiler load signal as feed-forward signal to controller as controling parameters, improve the rapid response speed of controller.
S102: receive the turbid ity signal of house outlet as feedback signal;
Because current environmental protection is as top priority, therefore, needing the outlet turbidity considering deduster, is that the turbid ity signal of house outlet is done closed-loop control as feeding back signal to controller in the present embodiment.
S103: generate conditioning signal according to described feed-forward signal and feedback signal;
S104: regulate the water yield size on heat-exchanging loop by described conditioning signal and adjust the method for operation and the parameter of deduster control appliance.
According to the difference of actual device, being the adjustment being realized the water yield by electric control valve in some devices, is the adjustment being realized the water yield by freq uency conversion supercharging pump in some devices.Concrete regulative mode can realize according to the distinct device in actual device.
When install in device be electric control valve time, can by the adjustment regulating the aperture of electric control valve can realize water yield size.
When install in device be freq uency conversion supercharging pump time, can by the adjustment regulating the frequency of freq uency conversion supercharging pump realize the size of the water yield.It should be noted that, by the adjustment regulating the size of the water yield on heat-exchanging loop can realize flue-gas temperature.Thus control the temperature of flue gas waste heat utilization device outlet and the temperature of deduster entrance.
Boiler load signal is passed through as feed-forward signal in the present embodiment, and the turbid ity signal of house outlet realizes the closed-loop control of flue-gas temperature as feedback signal, conditioning signal is generated by feed-forward signal and feedback signal, the size of the water yield in flue gas waste heat utilization device on heat-exchanging loop is regulated by conditioning signal, thus regulate the temperature of flue gas, simultaneously according to the method for operation and the parameter of conditioning signal adjustment deduster control appliance.Flue-gas temperature due to deduster entrance directly can affect the operating efficiency of deduster, and therefore, the flue-gas temperature of deduster entrance can not be too high.In addition, in order to realize the reduction of discharging of environmental protection, also needing the turbidity limiting house outlet, in the present embodiment, the turbidity of house outlet being carried out closed-loop control as the feedback information that priority is the highest.Namely take into account the duty of flue gas waste heat utilization device, consider again the duty of deduster.
Embodiment of the method two:
See Fig. 2, this figure is flue-gas temperature control method embodiment two flow chart provided by the invention.
S201 with S101 is identical, does not repeat them here.
S202: the entrance flue gas temperature signal and the exit gas temperature signal that receive flue gas waste heat utilization device;
S203 with S102 is identical, does not repeat them here.
It should be noted that, S203 and S202 does not have sequencing.
S204: generate conditioning signal by described boiler load signal, the turbid ity signal of house outlet, the entrance flue gas temperature of flue gas waste heat utilization device and exit gas temperature signal;
Being the adjustment being realized the water yield by electric control valve in some devices, is the adjustment being realized the water yield by freq uency conversion supercharging pump in some devices
S205: by the adjustment regulating the aperture of electric control valve or the frequency of freq uency conversion supercharging pump to realize the water yield size on heat-exchanging loop, also needs the method for operation and the current limitation that regulate deduster high voltage control equipment.
Generate conditioning signal according to described feed-forward signal and feedback signal described in S204, be specially: by described feed-forward signal and feedback signal through fuzzy-adaptation PID control to generate conditioning signal.
Can also comprise in the embodiment of the present invention: receive the water yield signal of flue gas waste heat utilization device import and the water yield signal of flue gas waste heat utilization device outlet;
When the water yield signal that water yield signal and the flue gas waste heat utilization device of described flue gas waste heat utilization device import are come in and gone out occurs abnormal, report to the police.
It should be noted that, detect the water yield of flue gas waste heat utilization device import and the water yield of outlet, is in order to whether the duty of monitoring arrangement is normal, instead of in order to control its duty.
Correspondingly, in order to whether the duty of monitoring arrangement is normal in the present embodiment, also need inlet water temperature and the outlet water temperature of measuring flue gas waste heat utilization device.
It should be noted that, in the present embodiment, after the turbidity information except consideration house outlet, also consider entrance flue gas temperature and the exit gas temperature of flue gas waste heat utilization device, both considered energy-conservation, and considered reduction of discharging again.So-called energy-saving and emission-reduction pattern that Here it is, and embodiment corresponding to Fig. 1 is reduction of discharging pattern.
Based on a kind of flue-gas temperature control method that above embodiment provides, the embodiment of the present invention additionally provides a kind of flue gas temperature regulating device, is described in detail below in conjunction with accompanying drawing.
Device embodiment one:
See Fig. 3, this figure is flue gas temperature regulating device embodiment one schematic diagram provided by the invention.
The flue gas temperature regulating device that the present embodiment provides, comprising: feed-forward signal receiver module 301, feedback signal reception module 302, conditioning signal generation module 303 and control module 304;
Described feed-forward signal receiver module 301, for receiving boiler load signal, described boiler load signal is as feed-forward signal;
It should be noted that, boiler load signal is generally directly obtained by boiler control system, the controller that boiler load signal sends to flue gas waste heat utilization device corresponding by boiler control system.
In the present embodiment using boiler load signal as feed-forward signal because the unit of boiler is in different size, the load of operation is different, and boiler operatiopn operating mode is also different, and correspondingly corresponding flue-gas temperature is not identical with the water yield yet.Such as, the unit of boiler can be 200MW unit, 300MW unit or 600MW unit.
Generally, the load of boiler is metastable, using boiler load signal as feed-forward signal to controller as controling parameters, improve the rapid response speed of controller.
Described feedback signal reception module 302, for receiving the turbid ity signal of house outlet, described turbid ity signal is as feedback signal;
Because current environmental protection is as top priority, therefore, needing the outlet turbidity considering deduster, is that the turbid ity signal of house outlet is done closed-loop control as feedback signal to controller in the present embodiment.
Described conditioning signal generation module 303, for generating conditioning signal according to described feed-forward signal and described feedback signal;
Described control module 304, for being regulated the water yield size on heat-exchanging loop and the method for operation and the parameter that adjust deduster control appliance by described conditioning signal.
According to the difference of actual device, being the adjustment being realized the water yield by electric control valve in some devices, is the adjustment being realized the water yield by freq uency conversion supercharging pump in some devices.Concrete regulative mode can realize according to the distinct device in actual device.
When install in device be electric control valve time, can by the adjustment regulating the aperture of electric control valve can realize water yield size.
When install in device be freq uency conversion supercharging pump time, can by the adjustment regulating the frequency of freq uency conversion supercharging pump realize the size of the water yield.
It should be noted that, by the adjustment regulating the size of the water yield on heat-exchanging loop can realize flue-gas temperature.Thus control the temperature of flue gas waste heat utilization device outlet and the temperature of deduster entrance.
Boiler load signal is passed through as feed-forward signal in the present embodiment, and the turbid ity signal of house outlet realizes the closed-loop control of flue-gas temperature as feedback signal, conditioning signal is generated by feed-forward signal and feedback signal, the size of the water yield in flue gas waste heat utilization device on heat-exchanging loop is regulated by conditioning signal, thus regulate the temperature of flue gas, simultaneously according to the method for operation and the parameter of conditioning signal adjustment deduster control appliance.Flue-gas temperature due to deduster entrance directly can affect the operating efficiency of deduster, and therefore, the flue-gas temperature of deduster entrance can not be too high.In addition, in order to realize the reduction of discharging of environmental protection, also needing the turbidity limiting house outlet, in the present embodiment, the turbidity of house outlet being carried out closed-loop control as the feedback information that priority is the highest.Namely take into account the duty of flue gas waste heat utilization device, consider again the duty of deduster.
Device embodiment two:
See Fig. 4, this figure is flue gas temperature regulating device embodiment two schematic diagram provided by the invention.
It should be noted that, device embodiment one provides the flue gas temperature regulating device working in reduction of discharging pattern, introduce that the embodiment of the present invention provides below can reduce discharging and can be energy-conservation flue gas temperature regulating device.
Being understandable that, be adjustment criteria is reduction of discharging pattern with the turbid ity signal of house outlet, and existing turbid ity signal has flue gas waste heat utilization device entrance and exit temperature is energy-saving and emission-reduction patterns.
The device that the present embodiment provides, also comprises: entrance flue gas temperature detection module 401 and exit gas temperature detection module 402;
Described entrance flue gas temperature detection module 401, for detecting flue gas waste heat utilization device entrance flue gas temperature, generates flue gas waste heat utilization device entrance flue gas temperature signal;
Described exit gas temperature detection module 402, for detecting flue gas waste heat utilization device exit gas temperature, generates flue gas waste heat utilization device exit gas temperature signal;
Described feedback signal reception module 302, also for receiving entrance flue gas temperature signal and the exit gas temperature signal of described flue gas waste heat utilization device.
Described conditioning signal generation module 303, for generating conditioning signal according to described turbid ity signal and described flue gas waste heat utilization device entrance flue gas temperature signal and flue gas waste heat utilization device exit gas temperature signal;
Described feed-forward signal and feedback signal are generated conditioning signal through fuzzy-adaptation PID control by described conditioning signal generation module 303.
Described control module comprises control submodule 304a, for the size by regulating the aperture of electric control valve on heat-exchanging loop or the frequency of freq uency conversion supercharging pump to regulate the water yield on heat-exchanging loop, regulate the method for operation and the current limitation of deduster high voltage control equipment according to conditioning signal simultaneously.
Can also comprise in the embodiment of the present invention: receive the water yield signal of flue gas waste heat utilization device import and the water yield signal of flue gas waste heat utilization device outlet;
When the water yield signal that water yield signal and the flue gas waste heat utilization device of described flue gas waste heat utilization device import are come in and gone out occurs abnormal, report to the police.
It should be noted that, detect the water yield of flue gas waste heat utilization device import and the water yield of outlet, is in order to whether the duty of monitoring arrangement is normal, instead of in order to control its duty.
Correspondingly, in order to whether the duty of monitoring arrangement is normal in the present embodiment, also need inlet water temperature and the outlet water temperature of measuring flue gas waste heat utilization device.
It should be noted that, in the present embodiment, after the turbidity information except consideration house outlet, also consider entrance flue gas temperature and the exit gas temperature of flue gas waste heat utilization device, both considered energy-conservation, and considered reduction of discharging again.
A kind of flue-gas temperature control method provided based on above embodiment and device, the embodiment of the present invention additionally provides a kind of smoke temperature adjusting system, is described in detail below in conjunction with accompanying drawing.
System embodiment one:
See Fig. 5, this figure is smoke temperature adjusting system embodiment one schematic diagram provided by the invention.
The smoke temperature adjusting system that the present embodiment provides, comprising: flue gas waste heat utilization device 500, deduster 600, boiler 700 and controller 800;
Described flue gas waste heat utilization device 500, exports to described deduster after the flue gas for being discharged by boiler 700 carries out waste heat recovery;
Described deduster 600, carries out dust removal process for the flue gas exported by described flue gas waste heat utilization device 500;
Described controller 800, for receiving the load signal of boiler 700 as feed-forward signal; Receive the turbid ity signal of deduster 600 outlet as feedback signal; Conditioning signal is generated according to described feed-forward signal and feedback signal; Regulate the water yield size in flue gas waste heat utilization device 500 on heat-exchanging loop by described conditioning signal and adjust the method for operation and the parameter of deduster control appliance.
It should be noted that, the load signal of boiler 700 is generally directly obtained by boiler control system, the controller that boiler load signal sends to flue gas waste heat utilization device corresponding by boiler control system.
In the present embodiment using boiler load signal as feed-forward signal because the unit of boiler is in different size, the load of operation is different, and boiler operatiopn operating mode is also different, and correspondingly corresponding flue-gas temperature is not identical with the water yield yet.Such as, the unit of boiler can be 200MW unit, 300MW unit or 600MW unit.
Generally, the load of boiler is metastable, using boiler load signal as feed-forward signal to controller as controling parameters, improve the rapid response speed of controller.
Because current environmental protection is as top priority, therefore, needing the outlet turbidity considering deduster, is that the turbid ity signal of house outlet is done closed-loop control as feedback signal to controller in the present embodiment.
According to the difference of actual device, being the adjustment being realized the water yield by electric control valve in some devices, is the adjustment being realized the water yield by freq uency conversion supercharging pump in some devices.Concrete regulative mode can realize according to the distinct device in actual device.
When install in device be electric control valve time, can by the adjustment regulating the aperture of electric control valve can realize water yield size.
When install in device be freq uency conversion supercharging pump time, can by the adjustment regulating the frequency of freq uency conversion supercharging pump realize the size of the water yield.
It should be noted that, by the adjustment regulating the size of the water yield on heat-exchanging loop can realize flue-gas temperature.Thus control the temperature of flue gas waste heat utilization device outlet and the temperature of deduster entrance.
Boiler load signal is passed through as feed-forward signal in the present embodiment, and the turbid ity signal of house outlet realizes the closed-loop control of flue-gas temperature as feedback signal, conditioning signal is generated by feed-forward signal and feedback signal, the size of the water yield in flue gas waste heat utilization device on heat-exchanging loop is regulated by conditioning signal, thus regulate the temperature of flue gas, simultaneously according to the method for operation and the parameter of conditioning signal adjustment deduster control appliance.Flue-gas temperature due to deduster entrance directly can affect the operating efficiency of deduster, and therefore, the flue-gas temperature of deduster entrance can not be too high.In addition, in order to realize the reduction of discharging of environmental protection, also needing the turbidity limiting house outlet, in the present embodiment, the turbidity of house outlet being carried out closed-loop control as the feedback information that priority is the highest.Namely take into account the duty of flue gas waste heat utilization device, consider again the duty of deduster.
It should be noted that, be that the flue gas of reduction of discharging pattern regulates in system embodiment one, the flue gas that another embodiment of the present invention additionally provides a kind of energy-saving and emission-reduction pattern regulates.
The smoke temperature adjusting system that the present embodiment provides, described feedback signal also comprises: the entrance flue gas temperature signal of flue gas waste heat utilization device and exit gas temperature signal;
Described turbid ity signal is obtained by the flue dust transmissometer or the measurement of dust concentration instrument being arranged on house outlet;
The entrance flue gas temperature signal of described flue gas waste heat utilization device and exit gas temperature signal are obtained by the temperature element measurement of the temperature element and outlet that are separately positioned on flue gas waste heat utilization device entrance.
Described controller 800, for the turbid ity signal exported by the load signal of boiler 700, deduster 600, and the entrance flue gas temperature signal of flue gas waste heat utilization device and exit gas temperature signal generate conditioning signal; Regulate the water yield size in flue gas waste heat utilization device 500 on heat-exchanging loop by described conditioning signal and adjust the method for operation and the current limitation of deduster high voltage control equipment.
It should be noted that, in the present embodiment, after the turbidity information except consideration house outlet, also consider entrance flue gas temperature and the exit gas temperature of flue gas waste heat utilization device, both considered energy-conservation, and considered reduction of discharging again.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (3)
1. a flue gas temperature regulating device, is characterized in that, comprising: feed-forward signal receiver module, feedback signal reception module, conditioning signal generation module and control module;
Described feed-forward signal receiver module, for receiving boiler load signal, described boiler load signal is as feed-forward signal;
Described feedback signal reception module, for receiving the turbid ity signal of house outlet, described turbid ity signal is as feedback signal;
Described conditioning signal generation module, for generating conditioning signal according to described feed-forward signal and described feedback signal;
Described control module, for being regulated the water yield size on heat-exchanging loop and the method for operation and the parameter that regulate deduster control appliance by described conditioning signal;
Also comprise: entrance flue gas temperature detection module and exit gas temperature detection module;
Described entrance flue gas temperature detection module, for detecting flue gas waste heat utilization device entrance flue gas temperature, generates flue gas waste heat utilization device entrance flue gas temperature signal;
Described exit gas temperature detection module, for detecting flue gas waste heat utilization device exit gas temperature, generates flue gas waste heat utilization device exit gas temperature signal;
Described feedback signal reception module, also for receiving entrance flue gas temperature signal and the exit gas temperature signal of described flue gas waste heat utilization device.
2. flue gas temperature regulating device according to claim 1, it is characterized in that, described control module comprises control submodule, for the size by regulating the aperture of electric control valve on heat-exchanging loop or the frequency of freq uency conversion supercharging pump to regulate the water yield on heat-exchanging loop, also for regulating the method for operation and the current limitation of deduster high voltage control equipment.
3. a smoke temperature adjusting system, is characterized in that, comprising: flue gas waste heat utilization device, deduster, boiler and controller;
Described flue gas waste heat utilization device, exports to described deduster after the flue gas of boiler emission is carried out waste heat recovery;
Described deduster, carries out dust removal process for the flue gas exported by described flue gas waste heat utilization device;
Described controller, for receiving boiler load signal as feed-forward signal; Receive the turbid ity signal of house outlet as feedback signal; Conditioning signal is generated according to described feed-forward signal and feedback signal; Regulate the water yield size in flue gas waste heat utilization device on heat-exchanging loop by described conditioning signal and regulate the method for operation and the current limitation of deduster high voltage control equipment;
Described feedback signal also comprises: the entrance flue gas temperature signal of flue gas waste heat utilization device and exit gas temperature signal;
Described turbid ity signal is obtained by the flue dust transmissometer or the measurement of dust concentration instrument being arranged on house outlet;
The entrance flue gas temperature signal of described flue gas waste heat utilization device and exit gas temperature signal are obtained by the temperature element measurement of the temperature element and outlet that are separately positioned on flue gas waste heat utilization device entrance.
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| CN105731574B (en) * | 2016-02-29 | 2018-06-22 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of wet flue gas desulfurization waste water evaporation process control method |
| CN109634315B (en) * | 2018-12-29 | 2021-12-03 | 福建龙净环保股份有限公司 | Method and device for controlling pH value of slurry |
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