CN205174319U - Low pressure economizer automatic control device with adjustable - Google Patents
Low pressure economizer automatic control device with adjustable Download PDFInfo
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- CN205174319U CN205174319U CN201520844965.9U CN201520844965U CN205174319U CN 205174319 U CN205174319 U CN 205174319U CN 201520844965 U CN201520844965 U CN 201520844965U CN 205174319 U CN205174319 U CN 205174319U
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Abstract
The utility model relates to a low pressure economizer automatic control device with adjustable. Operation management to the low pressure economizer is but relatively more extensive at present, is unfavorable for the high -efficient absorption of energy. The utility model discloses a low temperature feed -regulating valve and high temperature feed -regulating valve for adjusting the feed water temperature of low pressure economizer for calculate the low temperature feed water temperature monitoring devices and the high temperature feed water temperature monitoring devices of the aperture proportion of low temperature feed -regulating valve and high temperature feed -regulating valve, be used for controlling the water -feeding pump of the feedwater flow of low pressure economizer, be used for controlling the high -temperature return water stop valve and the low temperature return water stop valve of the access point of low pressure economizer return water, and the controller, the input port of controller has connect the temperature monitoring device, and the control termination has feedwater and water return valve to according to the aperture size of the temperature control low -level (stack -gas) economizer feed -regulating valve of each point and the switching of return water stop valve. The utility model discloses when guaranteeing the safe operation of low pressure economizer, make the low pressure economizer be in between the high efficiency operational zone all the time.
Description
Technical field
The utility model relates to a kind of adjustable low-voltage economizer automaton, be mainly used in the residual neat recovering system of thermal power plant's tail flue gas, this device can guarantee that low-pressure coal saver is under the prerequisite of safe operation, take into full account its operation characteristic and impact that the product confrontation steam turbine that draws gas is exerted oneself, make the waste heat of tail flue gas obtain efficient absorption and Optimum utilization, belong to field of energy-saving technology.
Background technology
Under the forcing of energy-saving and cost-reducing index, the power plant of installing low-pressure coal saver gets more and more, but it is more extensive to the operational management of low-pressure coal saver, often ignore the requirement of its operation characteristic to feed temperature, feedwater flow, exhaust gas temperature, make steam turbine when participating in peak regulation and variable parameter operation, low-pressure coal saver is often in inefficient district and runs, and is unfavorable for the efficient absorption of energy; In addition, the impact that product confrontation steam turbine exerts oneself of drawing gas is not considered to squeeze in the installation site of low-pressure coal saver return pipe, when underload, because return water temperature is lower, sometimes even need the steam taking out high-quality to heat the backwater of low-pressure coal saver more, be unfavorable for the Optimum utilization of energy.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and a kind of reasonable in design is provided, low-pressure coal saver operation conditions can be improved, make low-pressure coal saver from the adjustable low-voltage economizer automaton of flue afterbody efficient energy absorption.
The technical scheme in the invention for solving the above technical problem is: this adjustable low-voltage economizer automaton comprises service main, backwater supervisor and the low-pressure coal saver be arranged in flue, described service main is all connected with low-pressure coal saver with backwater supervisor, its design feature is: also comprise high-temperature tempering stop valve, low-temperature return water stop valve, high temperature water-supply control valve, low temperature feedwater control valve, No. eight low-pressure heaters, No. seven low-pressure heaters, No. six low-pressure heaters, No. five low-pressure heaters, No. five low-pressure heater outlet temperature monitoring devices, No. six low-pressure heater outlet temperature monitoring devices, high temperature water-supply device for detecting temperature, low temperature feedwater device for detecting temperature, controller, return water temperature monitoring device, feed pump, generator, generator power monitoring device, low-pressure coal saver exit gas temperature monitoring device, low-pressure coal saver entrance header water temperature detection device, high-temperature tempering pipeline, low-temperature return water pipeline, high temperature water-supply pipeline and low temperature feedwater pipeline, described feed pump is arranged on service main, described No. eight low-pressure heaters, No. seven low-pressure heaters, No. six low-pressure heaters are connected by pipeline successively with No. five low-pressure heaters, described No. five low-pressure heaters are connected with oxygen-eliminating device by pipeline, one end of described low temperature feedwater pipeline is connected on the pipeline between No. eight low-pressure heaters and No. seven low-pressure heaters, the other end of this low temperature feedwater pipeline is connected with service main, described low temperature feedwater control valve is arranged on low temperature feedwater pipeline, one end of described high temperature water-supply pipeline is connected on the pipeline between No. seven low-pressure heaters and No. six low-pressure heaters, the other end of this high temperature water-supply pipeline is connected with service main, described high temperature water-supply control valve is arranged on high temperature water-supply pipeline, one end of described low-temperature return water pipeline is connected on the pipeline between No. six low-pressure heaters and No. five low-pressure heaters, the other end of this low-temperature return water pipeline is connected with backwater supervisor, described low-temperature return water stop valve is arranged on low-temperature return water pipeline, one end of described high-temperature tempering pipeline is connected on No. five pipelines between low-pressure heater and oxygen-eliminating device, the other end of this high-temperature tempering pipeline is connected with backwater supervisor, described high-temperature tempering stop valve is arranged on high-temperature tempering pipeline, described generator power monitoring device is connected with generator, described low temperature feedwater device for detecting temperature is connected on the pipeline between No. eight low-pressure heaters and No. seven low-pressure heaters, described high temperature water-supply device for detecting temperature is connected on the pipeline between No. seven low-pressure heaters and No. six low-pressure heaters, described No. six low-pressure heater outlet temperature monitoring devices are connected on the pipeline between No. six low-pressure heaters and No. five low-pressure heaters, described No. five low-pressure heater outlet temperature monitoring devices are connected on No. five pipelines between low-pressure heater and oxygen-eliminating device, described low-pressure coal saver entrance header water temperature detection device is connected on service main, described return water temperature monitoring device is connected on backwater supervisor, described low-pressure coal saver exit gas temperature monitoring device is connected on flue, after this low-pressure coal saver exit gas temperature monitoring device is positioned at low-pressure coal saver, the input of described controller connects No. five low-pressure heater outlet temperature monitoring devices, No. six low-pressure heater outlet temperature monitoring devices, high temperature water-supply device for detecting temperature, low temperature feedwater device for detecting temperature, return water temperature monitoring device, generator power monitoring device, low-pressure coal saver exit gas temperature monitoring device and low-pressure coal saver entrance header water temperature detection device, the control end of this controller connects high-temperature tempering stop valve, low-temperature return water stop valve, high temperature water-supply control valve and low temperature feedwater control valve.
As preferably, feed pump described in the utility model is freq uency conversion supercharging feed pump.
As preferably, controller described in the utility model is DCS controller.
As preferably, high-temperature tempering stop valve described in the utility model is electric check valve.
As preferably, low-temperature return water stop valve described in the utility model is electric check valve.
The utility model compared with prior art, has the following advantages and effect: structure is simple, reasonable in design, easy to operate, is easy to realize.Can on the basis not changing existing low-pressure coal saver primary structure, just can effectively control low-pressure coal saver feed temperature and flow by the installation of minority measuring point, when unit load changes, low-pressure coal saver is in Effec-tive Function interval all the time.In addition, by the setting of high-temperature tempering pipe and low-temperature return water pipe, the quality of exclusion regenerative steam can be taken into full account, rationally determine the position of return pipe, prevent the backwater of the Steam Heating low-pressure coal saver using high-quality.While the safe operation of guarantee low-pressure coal saver, make the waste heat of low-pressure coal saver efficient absorption tail flue gas and make its utilization that is optimized.
The utility model can effectively control low-pressure coal saver outlet cigarette temperature, while preventing cold end corrosion, according to the operation characteristic (amount of energy saving and part throttle characteristics, amount of energy saving and water yield characteristic) of low-pressure coal saver, effectively controlled the flow of inlet water of low-pressure coal saver by the rotating speed changing feed pump; According to the inflow temperature characteristic of low-pressure coal saver, by the inflow temperature regulating the aperture ratio of low temperature feedwater control valve and high temperature water-supply control valve effectively to control low-pressure coal saver.Thus make low-pressure coal saver be in high-efficiency operation interval all the time, arrive the object that energy efficient absorbs.
Low-pressure coal saver entrance header water temperature detection device in the utility model, low-pressure coal saver outlet cigarette temperature monitoring device and return water temperature monitoring device all can adopt thermal resistance.Low temperature feedwater control valve, high temperature water-supply control valve can adopt electric control valve, for regulating the flow proportional of low temperature feedwater and high temperature water-supply.Feed pump can adopt freq uency conversion supercharging feed pump, for controlling feedwater flow.
Accompanying drawing explanation
Fig. 1 is the structural representation of adjustable low-voltage economizer automaton in the utility model embodiment.
In figure: 1, high-temperature tempering stop valve, 2, low-temperature return water stop valve, 3, high temperature water-supply control valve, 4, low temperature feedwater control valve, 5, No. eight low-pressure heaters, 6, No. seven low-pressure heaters, 7, No. six low-pressure heaters, 8, No. five low-pressure heaters, 9, No. five low-pressure heater outlet temperature monitoring devices, 10, No. six low-pressure heater outlet temperature monitoring devices, 11, high temperature water-supply device for detecting temperature, 12, low temperature feedwater device for detecting temperature, 13, controller, 14, return water temperature monitoring device, 15, low-pressure coal saver, 16, feed pump, 17, generator, 18, generator power monitoring device, 19, low-pressure coal saver exit gas temperature monitoring device, 20, low-pressure coal saver entrance header water temperature detection device, 21, high-temperature tempering pipeline, 22, low-temperature return water pipeline, 23, high temperature water-supply pipeline, 24, low temperature feedwater pipeline.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment.
See Fig. 1, the adjustable low-voltage economizer automaton in the present embodiment comprises high-temperature tempering stop valve 1, low-temperature return water stop valve 2, high temperature water-supply control valve 3, low temperature feedwater control valve 4, No. eight low-pressure heaters 5, No. seven low-pressure heaters 6, No. six low-pressure heaters 7, No. five low-pressure heaters 8, No. five low-pressure heater outlet temperature monitoring devices 9, No. six low-pressure heater outlet temperature monitoring devices 10, high temperature water-supply device for detecting temperature 11, low temperature feedwater device for detecting temperature 12, controller 13, return water temperature monitoring device 14, low-pressure coal saver 15, feed pump 16, generator 17, generator power monitoring device 18, low-pressure coal saver exit gas temperature monitoring device 19, low-pressure coal saver entrance header water temperature detection device 20, high-temperature tempering pipeline 21, low-temperature return water pipeline 22, high temperature water-supply pipeline 23, low temperature feedwater pipeline 24, service main and backwater supervisor, wherein, low-pressure coal saver 15 is arranged in flue, and service main is all connected with low-pressure coal saver 15 with backwater supervisor.
Feed pump 16 in the present embodiment is arranged on service main, No. eight low-pressure heaters 5, No. seven low-pressure heaters 6, No. six low-pressure heaters 7 are connected by pipeline successively with No. five low-pressure heaters 8, No. five low-pressure heaters 8 are connected with oxygen-eliminating device by pipeline, one end of low temperature feedwater pipeline 24 is connected on the pipeline between No. eight low-pressure heaters 5 and No. seven low-pressure heaters 6, the other end of this low temperature feedwater pipeline 24 is connected with service main, low temperature feedwater control valve 4 is arranged on low temperature feedwater pipeline 24, one end of high temperature water-supply pipeline 23 is connected on the pipeline between No. seven low-pressure heaters 6 and No. six low-pressure heaters 7, the other end of this high temperature water-supply pipeline 23 is connected with service main, high temperature water-supply control valve 3 is arranged on high temperature water-supply pipeline 23.
One end of low-temperature return water pipeline 22 in the present embodiment is connected on the pipeline between No. six low-pressure heaters 7 and No. five low-pressure heaters 8, the other end of this low-temperature return water pipeline 22 is connected with backwater supervisor, low-temperature return water stop valve 2 is arranged on low-temperature return water pipeline 22, one end of high-temperature tempering pipeline 21 is connected on the pipeline between No. five low-pressure heaters 8 and oxygen-eliminating device, the other end of this high-temperature tempering pipeline 21 is connected with backwater supervisor, and high-temperature tempering stop valve 1 is arranged on high-temperature tempering pipeline 21.
Generator power monitoring device 18 in the present embodiment is connected on the outlet bus of generator 17, low temperature feedwater device for detecting temperature 12 is connected on the pipeline between No. eight low-pressure heaters 5 and No. seven low-pressure heaters 6, high temperature water-supply device for detecting temperature 11 is connected on the pipeline between No. seven low-pressure heaters 6 and No. six low-pressure heaters 7, No. six low-pressure heater outlet temperature monitoring devices 10 are connected on the pipeline between No. six low-pressure heaters 7 and No. five low-pressure heaters 8, No. five low-pressure heater outlet temperature monitoring devices 9 are connected on the pipeline between No. five low-pressure heaters 8 and oxygen-eliminating device, low-pressure coal saver entrance header water temperature detection device 20 is connected on service main, return water temperature monitoring device 14 is connected on backwater supervisor, low-pressure coal saver exit gas temperature monitoring device 19 is connected on flue, after this low-pressure coal saver exit gas temperature monitoring device 19 is positioned at low-pressure coal saver 15, namely low-pressure coal saver exit gas temperature monitoring device 19 is positioned at low-pressure coal saver exhaust pass position.
The input of the controller 13 in the present embodiment connects No. five low-pressure heater outlet temperature monitoring devices 9, No. six low-pressure heater outlet temperature monitoring devices 10, high temperature water-supply device for detecting temperature 11, low temperature feedwater device for detecting temperature 12, return water temperature monitoring device 14, generator power monitoring device 18, low-pressure coal saver exit gas temperature monitoring device 19 and low-pressure coal saver entrance header water temperature detection device 20, and the control end of this controller 13 connects high-temperature tempering stop valve 1, low-temperature return water stop valve 2, high temperature water-supply control valve 3 and low temperature feedwater control valve 4.
Under normal circumstances, feed pump 16 is freq uency conversion supercharging feed pump, and controller 13 is DCS controller, and high-temperature tempering stop valve 1 is electric check valve, and low-temperature return water stop valve 2 is electric check valve.Low temperature feedwater device for detecting temperature 12, high temperature water-supply device for detecting temperature 11, generator power monitoring device 18, No. six low-pressure heater leaving water temperature monitoring devices 10 and No. five low-pressure heater leaving water temperature monitoring devices 9 all can adopt the existing monitoring device of power plant.
Low temperature feedwater control valve 4 in the present embodiment and the temperature of high temperature water-supply control valve 3 for regulating low-pressure coal saver to feed water.Low temperature feedwater temperature measuring equipment 12 and high temperature water-supply temperature measuring equipment 11, for the inflow temperature characteristic according to low-pressure coal saver 15, calculate the aperture ratio of low temperature feedwater control valve 4 and high temperature water-supply control valve 3.High-temperature tempering stop valve 1 is connected to high-temperature tempering pipeline 21, and low-temperature return water stop valve 2 is connected to low-temperature return water pipeline 22, for controlling the access point of low-pressure coal saver 15 backwater.Controller 13 can be Power Plant DCS, can be integrated in whole Iarge-scale system, is convenient to operations staff's entirety and controls.
Low temperature feedwater control valve 4 in the present embodiment and high temperature water-supply control valve 3 are for regulating the feed temperature of low-pressure coal saver 15; Low temperature feedwater device for detecting temperature 12 and high temperature water-supply device for detecting temperature 11 are for calculating the aperture ratio of low temperature feedwater control valve 4 and high temperature water-supply control valve 3; Feed pump 16 is for controlling the feedwater flow of low-pressure coal saver 15; High-temperature tempering stop valve 1 and low-temperature return water stop valve 2 are for controlling the access point of low-pressure coal saver 15 backwater.The control port of controller 13 is connected to high-temperature tempering stop valve 1, low-temperature return water stop valve 2, high temperature water-supply control valve 3 and low temperature feedwater control valve 4, to control the aperture size of low-level (stack-gas) economizer feed-regulating valve and the opening and closing of backwater stop valve according to the temperature of each point.
Adjustable low-voltage economizer automaton in the present embodiment, while the safe operation of guarantee low-pressure coal saver 15, makes it be in high-efficiency operation interval all the time, is convenient to efficient absorption and the Optimum utilization of tail flue gas waste heat.
When unit load changes, operation characteristic (amount of energy saving and part throttle characteristics, amount of energy saving and inflow characteristic) according to low-pressure coal saver 15 controls its inflow, inflow temperature characteristic according to low-pressure coal saver 15 determines its inflow temperature, when unit load is changed, low-pressure coal saver 15 is in high efficiency state all the time and runs.
Low-pressure coal saver 15 inflow temperature automatic control mode: according to the measured value of low temperature feedwater temperature measuring equipment 12 and high temperature water-supply temperature measuring equipment 11, in conjunction with the inflow temperature characteristic of low-pressure coal saver 15, determine the aperture ratio of low temperature feedwater control valve 4 and high temperature water-supply control valve 3, thus control the water temperature of feedwater.
Low-pressure coal saver 15 inflow automatic control mode: according to the load-inflow characteristic of low-pressure coal saver 15, regulated the aperture size of low temperature feedwater control valve 4 and high temperature water-supply control valve 3 by controller 13, thus the inflow controlling low-pressure coal saver 15.
Low-pressure coal saver 15 exhaust gas temperature automatic control mode: when low-pressure coal saver 15 exhaust gas temperature is higher than design load, controller 13 sends instruction, tunes up the rotating speed of feed pump 16, feedwater flow increases, and makes flue-gas temperature be reduced to design load; When low-pressure coal saver 15 exhaust gas temperature is lower than design load, controller 13 sends instruction, turns the rotating speed of feed pump 16 down, and feedwater flow reduces, and makes flue-gas temperature be increased to design load.
Low-pressure coal saver 15 backwater access point automatic control mode: when the return water temperature of low-pressure coal saver 15 is more than or equal to the outlet water temperature of No. five low-pressure heaters 8, high-temperature tempering stop valve 1 is opened, and low-temperature return water stop valve 2 is closed; When the return water temperature of low-pressure coal saver 15 is less than the outlet water temperature of No. five low-pressure heaters 8, high-temperature tempering stop valve 1 is closed, and low-temperature return water stop valve 2 is opened.The advantage of the control mode that this kind of backwater access point is adjustable is: when low-pressure coal saver 15 feeds water underheat, and the backwater and causing that can prevent four sections of heating low-pressure coal savers 15 that draw gas owing to taking out high-quality does work the situation of capacity loss more.
In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. an adjustable low-voltage economizer automaton, comprise service main, backwater supervisor and the low-pressure coal saver be arranged in flue, described service main is all connected with low-pressure coal saver with backwater supervisor, it is characterized in that: also comprise high-temperature tempering stop valve, low-temperature return water stop valve, high temperature water-supply control valve, low temperature feedwater control valve, No. eight low-pressure heaters, No. seven low-pressure heaters, No. six low-pressure heaters, No. five low-pressure heaters, No. five low-pressure heater outlet temperature monitoring devices, No. six low-pressure heater outlet temperature monitoring devices, high temperature water-supply device for detecting temperature, low temperature feedwater device for detecting temperature, controller, return water temperature monitoring device, feed pump, generator, generator power monitoring device, low-pressure coal saver exit gas temperature monitoring device, low-pressure coal saver entrance header water temperature detection device, high-temperature tempering pipeline, low-temperature return water pipeline, high temperature water-supply pipeline and low temperature feedwater pipeline, described feed pump is arranged on service main, described No. eight low-pressure heaters, No. seven low-pressure heaters, No. six low-pressure heaters are connected by pipeline successively with No. five low-pressure heaters, described No. five low-pressure heaters are connected with oxygen-eliminating device by pipeline, one end of described low temperature feedwater pipeline is connected on the pipeline between No. eight low-pressure heaters and No. seven low-pressure heaters, the other end of this low temperature feedwater pipeline is connected with service main, described low temperature feedwater control valve is arranged on low temperature feedwater pipeline, one end of described high temperature water-supply pipeline is connected on the pipeline between No. seven low-pressure heaters and No. six low-pressure heaters, the other end of this high temperature water-supply pipeline is connected with service main, described high temperature water-supply control valve is arranged on high temperature water-supply pipeline, one end of described low-temperature return water pipeline is connected on the pipeline between No. six low-pressure heaters and No. five low-pressure heaters, the other end of this low-temperature return water pipeline is connected with backwater supervisor, described low-temperature return water stop valve is arranged on low-temperature return water pipeline, one end of described high-temperature tempering pipeline is connected on No. five pipelines between low-pressure heater and oxygen-eliminating device, the other end of this high-temperature tempering pipeline is connected with backwater supervisor, described high-temperature tempering stop valve is arranged on high-temperature tempering pipeline, described generator power monitoring device is connected with generator, described low temperature feedwater device for detecting temperature is connected on the pipeline between No. eight low-pressure heaters and No. seven low-pressure heaters, described high temperature water-supply device for detecting temperature is connected on the pipeline between No. seven low-pressure heaters and No. six low-pressure heaters, described No. six low-pressure heater outlet temperature monitoring devices are connected on the pipeline between No. six low-pressure heaters and No. five low-pressure heaters, described No. five low-pressure heater outlet temperature monitoring devices are connected on No. five pipelines between low-pressure heater and oxygen-eliminating device, described low-pressure coal saver entrance header water temperature detection device is connected on service main, described return water temperature monitoring device is connected on backwater supervisor, described low-pressure coal saver exit gas temperature monitoring device is connected on flue, after this low-pressure coal saver exit gas temperature monitoring device is positioned at low-pressure coal saver, the input of described controller connects No. five low-pressure heater outlet temperature monitoring devices, No. six low-pressure heater outlet temperature monitoring devices, high temperature water-supply device for detecting temperature, low temperature feedwater device for detecting temperature, return water temperature monitoring device, generator power monitoring device, low-pressure coal saver exit gas temperature monitoring device and low-pressure coal saver entrance header water temperature detection device, the control end of this controller connects high-temperature tempering stop valve, low-temperature return water stop valve, high temperature water-supply control valve and low temperature feedwater control valve.
2. adjustable low-voltage economizer automaton according to claim 1, is characterized in that: described feed pump is freq uency conversion supercharging feed pump.
3. adjustable low-voltage economizer automaton according to claim 1, is characterized in that: described controller is DCS controller.
4. adjustable low-voltage economizer automaton according to claim 1, is characterized in that: described high-temperature tempering stop valve is electric check valve.
5. adjustable low-voltage economizer automaton according to claim 1, is characterized in that: described low-temperature return water stop valve is electric check valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520844965.9U CN205174319U (en) | 2015-10-28 | 2015-10-28 | Low pressure economizer automatic control device with adjustable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520844965.9U CN205174319U (en) | 2015-10-28 | 2015-10-28 | Low pressure economizer automatic control device with adjustable |
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| CN205174319U true CN205174319U (en) | 2016-04-20 |
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| CN201520844965.9U Active CN205174319U (en) | 2015-10-28 | 2015-10-28 | Low pressure economizer automatic control device with adjustable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123001A (en) * | 2016-06-24 | 2016-11-16 | 福建龙净环保股份有限公司 | A kind of smoke waste heat utilization system and method |
| CN106224936A (en) * | 2016-08-25 | 2016-12-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of low-level (stack-gas) economizer optimizes operation control system and control method thereof |
-
2015
- 2015-10-28 CN CN201520844965.9U patent/CN205174319U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123001A (en) * | 2016-06-24 | 2016-11-16 | 福建龙净环保股份有限公司 | A kind of smoke waste heat utilization system and method |
| CN106224936A (en) * | 2016-08-25 | 2016-12-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of low-level (stack-gas) economizer optimizes operation control system and control method thereof |
| CN106224936B (en) * | 2016-08-25 | 2018-11-27 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of control method of low-level (stack-gas) economizer optimization operation control system |
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