CN104236631A - Method and device for monitoring energy efficiency of heating furnaces - Google Patents

Method and device for monitoring energy efficiency of heating furnaces Download PDF

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Publication number
CN104236631A
CN104236631A CN201410502999.XA CN201410502999A CN104236631A CN 104236631 A CN104236631 A CN 104236631A CN 201410502999 A CN201410502999 A CN 201410502999A CN 104236631 A CN104236631 A CN 104236631A
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index
energy efficiency
heating furnace
data
indexes
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CN104236631B (en
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陆育峰
郭以东
杨勇
王亦然
曾丽花
祁滢
刘博�
刘富余
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

The invention discloses a method and a device for monitoring energy efficiency of heating furnaces. The method includes acquiring data of first index of the heating furnaces, calculating to obtain data of second index from the data of the first index by a counter-balance calculation method, and displaying energy efficiency index of the heating furnaces. The first index includes temperature and oxygen content of flue gas; the second index includes heat efficiency; and the energy efficiency index includes the second index. By the method and the device, status of the energy efficiency index of the heating furnaces can be monitored in real time.

Description

Heating furnace energy efficiency monitoring method and device
Technical field
The application relates to petroleum refining field, particularly relates to a kind of heating furnace energy efficiency monitoring method and device.
Background technology
Petroleum refining process is that petroleum is carried out the process that high temperature fractionation obtains the different product such as gasoline, diesel oil, kerosene, petroleum gas.Heating furnace is the petroleum equipment in petroleum refining process, and it produces heat by combustion fuel and petroleum is carried out high temperature fractionation, generally adopts tubular heater in petroleum refining process.Heating furnace efficiency refers to the degree that the energy that heating furnace provides is used effectively, and it can be reflected by the energy efficiency indexes data such as effluent gas temperature, flue gas oxygen content, the thermal efficiency in monitoring furnace flue.Along with people are to the increase of energy demand, the CO that heating furnace combustion fuel causes 2, NO x, SO xday by day increase Deng gas emissions, environmental pollution is increased the weight of day by day.By monitoring the energy efficiency indexes state of heating furnace, effectively can strengthen the timely management and control to furnace fuel consumption process, and then effectively reduce Fuel Consumption, reduction production cost, minimizing harmful gas to airborne release.
At present, the monitoring of petroleum refining enterprise heating furnace energy efficiency indexes state adopts manual type regularly to arrive each device to carry out test and gather related data and realize substantially, after gathering related data, data test and data processing all need certain cycle, the Real-Time Monitoring to heating furnace energy efficiency indexes state can not be realized, and then cannot Optimum Operation, the also timely diagnosis of inconvenient heating furnace efficiency changing condition in time.If provide a kind of heating furnace energy efficiency monitoring method, to realize the Real-Time Monitoring of heating furnace energy efficiency indexes state, the energy management level of heating furnace will be significantly improved, promote the progress that enterprise's " energy-saving and emission-reduction " works.
Summary of the invention
The application provide a kind of can the heating furnace energy efficiency monitoring method of Real-Time Monitoring heating furnace energy efficiency indexes state and device.
The application provides a kind of heating furnace energy efficiency monitoring method, comprising:
The data of the first index of Real-time Obtaining heating furnace, described first index comprises effluent gas temperature, flue gas oxygen content;
The data of described first index are calculated the data of the second index by back balance computing method, described second index comprises the thermal efficiency;
Show the energy efficiency indexes of described heating furnace, described energy efficiency indexes comprises described second index.
Preferably, described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.
Preferably, described first index also comprises flue-gas flow rate, and described energy efficiency indexes comprises described first index and described second index.
Preferably, the energy efficiency indexes of described heating furnace is shown by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.
Preferably, the color shows colour of each grid of described information form is by following formulae discovery:
F=(V-L)/(H-L);
If F<0, (R, G, B)=(255* (0-F), 255* (0-F), 0);
If F>1, (R, G, B)=((F-1)/2*255,255/F, 0);
If 0≤F≤1, (R, G, B)=(0,255*F, 0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.
The application also provides a kind of heating furnace energy efficiency monitoring device, comprising:
Obtain data module, it is for the data of the first index of Real-time Obtaining heating furnace, and described first index comprises effluent gas temperature, flue gas oxygen content;
Data processing module, it is for calculating the data of the second index by back balance computing method by the data of described first index, described second index comprises the thermal efficiency;
Index display module, it is for showing the energy efficiency indexes of described heating furnace, and described energy efficiency indexes comprises described second index.
Preferably, described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.
Preferably, described first index also comprises flue-gas flow rate, and described energy efficiency indexes comprises described first index and described second index.
Preferably, described index display module shows the energy efficiency indexes of described heating furnace by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.
Preferably, the color shows colour of each grid of described information form is by following formulae discovery:
F=(V-L)/(H-L);
If F<0,
(R,G,B)=(255*(0-F),255*(0-F),0)
If F>1,
(R,G,B)=((F-1)/2*255,255/F,0)
Otherwise
(R,G,B)=(0,255*F,0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.The method of real-time that above-mentioned the application provides and device, by the data of the first index of Real-time Obtaining heating furnace, and by the data of the data of described first index by process acquisition second index, and then obtain the energy efficiency indexes of heating furnace and displayed, so the heating furnace energy efficiency monitoring method provided by the application and device can the energy efficiency indexes states of Real-Time Monitoring heating furnace.
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 skilled 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 the process flow diagram of the heating furnace energy efficiency monitoring method that a kind of embodiment of the application provides;
Fig. 2 is the schematic diagram of the heating furnace energy efficiency monitoring device that a kind of embodiment of the application provides.
Embodiment
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
Please refer to Fig. 1, the heating furnace energy efficiency monitoring method that a kind of embodiment of the application provides, comprise the following steps:
The data of the first index of S1, Real-time Obtaining heating furnace; Described first index comprises effluent gas temperature, flue gas oxygen content.
In described step S1, the data of Real-time Obtaining first index can install corresponding sensor device at described heating furnace, by connecting the various data-interfaces that described sensor device provides, and then directly can obtain the data of the first index of heating furnace to be monitored in real time.In addition, can also by setting up real-time data base to carry out Real-time Obtaining data, the equipment connection of described real-time data base and various monitoring heating furnace, various Monitoring Data can be sent to real-time data base by the equipment of described various monitoring heating furnace in real time, described Monitoring Data stores by real-time data base, so the data of the first index described in Real-time Obtaining also can directly by connecting the interface of real-time data base, and then the data of the first index needed for obtaining.
The data of described first index draw for directly carrying out measurement by measuring equipments such as spot sensors, and it comprises effluent gas temperature, flue gas oxygen content.Described effluent gas temperature is the temperature of gas in furnace flue in described heating furnace combustion process, due to the heating effect direct correlation of described effluent gas temperature and heating furnace, if effluent gas temperature is too high, illustrate that the heat lost by flue gas in heating furnace combustion fuel can be a lot, so effluent gas temperature can reflect the heated condition in heating furnace to a certain extent.Described flue gas oxygen content is the content of oxygen in gas in furnace flue in described heating furnace combustion process.The number of demand oxygen when described flue gas oxygen content effectively can reflect heating furnace combustion fuel, and then also can reflect that whether heating furnace combustion fuel is abundant by the number of flue gas oxygen content.
Further, described first index can also comprise flue-gas flow rate, and described flue-gas flow rate is the uninterrupted of Exhaust Gas in furnace flue in described Furnace Production Process.
S2, the data of described first index are calculated the data of the second index by back balance computing method; Described second index comprises the thermal efficiency.
Described second index is obtained by correlation computations on the basis of the data of acquisition first index.Further, described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.So described second index can comprise excess air coefficient, flue gas loss heat, furnace wall radiation loss heat, the thermal efficiency.The ratio that heat that hot fluid absorbs is shared in whole discharged heat is added in the heat that described thermal efficiency of heating furnace discharges for heating furnace combustion fuel.Adding the heat that hot fluid absorbs be difficult to measure due to described, so by the thermal loss of heating furnace in combustion fuel process being calculated, and then learning the thermal efficiency of heating furnace.The thermal loss of described heating furnace in combustion fuel process mainly contains two kinds: flue gas loss heat, furnace wall radiation loss heat.The data of described second index can be calculated by described back balance computing method.Described back balance computing method formula is:
α=(21+0.116*O)/(21-O);
q1=(8.3*0.001+0.031*α)*(T+1.35*0.0001*T*T);
q2=3~6;
η=(100-q1-q2)%;
Wherein, O is flue gas oxygen content, %; α is excess air coefficient; T is effluent gas temperature, DEG C; Q1 is flue gas loss heat, %; Q2 is furnace wall radiation loss heat, %; η is the thermal efficiency, %.(unit does not provide)
Described flue gas loss heat in heating furnace combustion fuel process by institute's Exhaust Gas dispersed heat, its with described effluent gas temperature, described excess air coefficient is relevant.Described excess air coefficient carries out calculating on the basis obtaining described flue gas oxygen content, its computing formula is α=(21+0.116*O)/(21-O), and what described excess air coefficient represented heating furnace Actual combustion air capacity and Actual combustion air capacity occupies ratio.Excess air coefficient is too little, and fuel combustion is incomplete, and waste fuel, even can cause secondary combustion, but excess air coefficient is too large, enters stove air too many, and fire box temperature declines, and conduct heat bad, flue tolerance is many, takes away heat many, also wastes fuel.So learn that the size of excess air coefficient is also very important for the monitoring of heating furnace efficiency.
Described furnace wall radiation loss heat is the furnace wall institute dispersed heat by heating furnace in heating furnace combustion fuel process, and it is relevant with the factor such as wind speed, temperature outside described heating furnace furnace wall, and the impact of wind speed is greater than the impact of temperature outside furnace wall.Temperature outside such as heating furnace furnace wall is lower and wind speed is larger time, described q2 can be set to 6, temperature outside heating furnace furnace wall is higher and wind speed is lower time, described q2 can be set to 3, its concrete numerical value can be undertaken choosing certain numerical value by experience according to the wind speed in selected moment, temperature.Because the heating furnace of same oil refining factory is all in same external environment, so when carrying out multiple heating furnace and measure in real time simultaneously, described in synchronization, furnace wall radiation loss heat (q2) need be set to identical numerical value.
S3, show the energy efficiency indexes of described heating furnace, described energy efficiency indexes comprises described second index.
After calculating described this energy efficiency indexes of second index by step S2, need the energy efficiency indexes of described heating furnace to display.For ease of intuitively showing described indication information, the energy efficiency indexes of described heating furnace can be shown by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.Described information form is as shown in the table:
Further, each grid of described information form can show different colors, to reflect the energy efficiency state of each heating furnace more intuitively according to the size of data difference of target energy.The color shows colour of each grid of described information form can by following color shows colour formulae discovery:
F=(V-L)/(H-L);
If F<0, (R, G, B)=(255* (0-F), 255* (0-F), 0);
If F>1, (R, G, B)=((F-1)/2*255,255/F, 0);
If 0≤F≤1, (R, G, B)=(0,255*F, 0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.
The max-thresholds of described energy efficiency indexes and minimum threshold all can set according to actual conditions, and the energy efficiency indexes threshold value of different heating-furnace is also different.The minimum threshold of the such as thermal efficiency can be set to 89%, and its max-thresholds is set to 100%; The minimum threshold of flue gas oxygen content is set to 1%, and its max-thresholds is 4% or 5%; Effluent gas temperature minimum threshold is set to 100 degrees Celsius, and its max-thresholds is set to 140 degrees Celsius or 130 degrees Celsius; The minimum threshold of furnace wall radiation loss heat can be set to 1%, and its max-thresholds can be set to 3%.
For heating furnace described in better Real-Time Monitoring also reflects the efficiency situation of described heating furnace comprehensively, described energy efficiency indexes can comprise described first index and described second index.
In present embodiment, by the data of the first index of Real-time Obtaining heating furnace, and by the data of the data of described first index by process acquisition second index, and then obtain the energy efficiency indexes of heating furnace and displayed, so the heating furnace energy efficiency monitoring method provided by present embodiment can the energy efficiency state of Real-Time Monitoring heating furnace.
A specific embodiment of the heating furnace energy efficiency monitoring method provided by the application is described in detail the principle of the application below.
By the data of the first index of local supervising and measuring equipment acquisition heating furnace 1, heating furnace 2.The flue gas oxygen content of described heating furnace 1 is 2.25%, and effluent gas temperature is 148.99 degrees Celsius; The flue gas oxygen content of described heating furnace 2 is 4.29%, and effluent gas temperature is 101.15 degrees Celsius.
The data of the first index of described heating furnace 1 and heating furnace 2 are calculated the second achievement data by thermal efficiency of heating furnace computing formula.The furnace wall radiation loss heat of described heating furnace 1 is set to 2.5%, and its thermal efficiency is 90.9%; The furnace wall radiation loss heat of described heating furnace 2 is set to 2.5%, and its thermal efficiency is 92.56%.
The energy efficiency indexes of described heating furnace 1, described heating furnace 2 is shown by information form.As following table:
The thermal efficiency (%) 90.9 92.56
Flue gas oxygen content (%) 2.25 4.29
Effluent gas temperature (DEG C) 148.99 101.15
Furnace wall radiation loss heat (%) 2.5 2.5
? Heating furnace 1 Heating furnace 2
The threshold value of the energy efficiency indexes institute object of heating furnace described in each is set, as following table according to actual conditions:
According to above threshold value table by described color shows colour formula can make more intuitively react heating furnace energy efficiency state described in each information form, as following table:
The thermal efficiency (%) 90.9(0,44.05,0) 92.56(0,82.53,0)
Flue gas oxygen content (%) 2.25(0,106.25,0) 4.29(0,209.74,0)
Effluent gas temperature (DEG C) 148.99(28.66,208.21,0) 101.15(0,9.78,0)
Furnace wall radiation loss heat (%) 2.5(0,191.25,0) 2.5(0,191.25,0)
? Heating furnace 1 Heating furnace 2
[0073]in bracket in each grid in above table show by corresponding form the (R of color, G, B) colour, obviously can reflect when above-mentioned colour being reflected by color/graphics etc. that the numerical values recited due to energy efficiency indexes is different, the color that different form is shown is not identical yet, and then shows the energy efficiency indexes state of each heating furnace more intuitively.
Please refer to Fig. 2, a kind of embodiment of the application also provides a kind of heating furnace energy efficiency monitoring device, comprising: obtain data module 100, it is for the data of the first index of Real-time Obtaining heating furnace; Described first index comprises effluent gas temperature, flue gas oxygen content; Data processing module 200, it is for calculating the data of the second index by back balance computing method by the data of described first index; Described second index comprises the thermal efficiency; Index display module 300, it is for showing the energy efficiency indexes of described heating furnace, and described energy efficiency indexes comprises described second index.
Described acquisition data module 100, it is for the data of the first index of Real-time Obtaining heating furnace; Described first index comprises effluent gas temperature, flue gas oxygen content.In described acquisition data module 100, the data of Real-time Obtaining first index can install corresponding sensor device at described heating furnace, by connecting the various data-interfaces that described sensor device provides, and then directly can obtain the data of the first index of heating furnace to be monitored in real time.In addition, can also by setting up real-time data base to carry out Real-time Obtaining data, the equipment connection of described real-time data base and various monitoring heating furnace, various Monitoring Data can be sent to real-time data base by the equipment of described various monitoring heating furnace in real time, described Monitoring Data stores by real-time data base, so the data of the first index described in Real-time Obtaining also can directly by connecting the interface of real-time data base, and then the data of the first index needed for obtaining.
The data of described first index draw for directly carrying out measurement by measuring equipments such as spot sensors, and it comprises effluent gas temperature, flue gas oxygen content.Described effluent gas temperature is the temperature of gas in furnace flue in described heating furnace combustion process, due to the heating effect direct correlation of described effluent gas temperature and heating furnace, if effluent gas temperature is too high, illustrate that the heat lost by flue gas in heating furnace combustion fuel can be a lot, so effluent gas temperature can reflect the heated condition in heating furnace to a certain extent.Described flue gas oxygen content is the content of oxygen in gas in furnace flue in described heating furnace combustion process.The number of demand oxygen when described flue gas oxygen content effectively can reflect heating furnace combustion fuel, and then also can reflect that whether heating furnace combustion fuel is abundant by the number of flue gas oxygen content.
Further, described first index can also comprise flue-gas flow rate, and described flue-gas flow rate is the uninterrupted of Exhaust Gas in furnace flue in described Furnace Production Process.
Described data processing module 200, it is for calculating the data of the second index by back balance computing method by the data of described first index.
Described second index is obtained by correlation computations on the basis of the data of acquisition first index.Further, described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.So described second index can comprise excess air coefficient, flue gas loss heat, furnace wall radiation loss heat, the thermal efficiency.The ratio that heat that hot fluid absorbs is shared in whole discharged heat is added in the heat that described thermal efficiency of heating furnace discharges for heating furnace combustion fuel.Adding the heat that hot fluid absorbs be difficult to measure due to described, so by the thermal loss of heating furnace in combustion fuel process being calculated, and then learning the thermal efficiency of heating furnace.The thermal loss of described heating furnace in combustion fuel process mainly contains two kinds: flue gas loss heat, furnace wall radiation loss heat.The data of described second index can be calculated by described back balance computing method.Described back balance computing method formula is:
α=(21+0.116*O)/(21-O);
q1=(8.3*0.001+0.031*α)*(T+1.35*0.0001*T*T);
q2=3~6;
η=(100-q1-q2)%;
Wherein, O is flue gas oxygen content, %; α is excess air coefficient; T is effluent gas temperature, DEG C; Q1 is flue gas loss heat, %; Q2 is furnace wall radiation loss heat, %; η is the thermal efficiency, %.
Described flue gas loss heat in heating furnace combustion fuel process by institute's Exhaust Gas dispersed heat, its with described effluent gas temperature, described excess air coefficient is relevant.Described excess air coefficient carries out calculating on the basis obtaining described flue gas oxygen content, its computing formula is α=(21+0.116*O)/(21-O), and what described excess air coefficient represented heating furnace Actual combustion air capacity and Actual combustion air capacity occupies ratio.Excess air coefficient is too little, and fuel combustion is incomplete, and waste fuel, even can cause secondary combustion, but excess air coefficient is too large, enters stove air too many, and fire box temperature declines, and conduct heat bad, flue tolerance is many, takes away heat many, also wastes fuel.So learn that the size of excess air coefficient is also very important for the monitoring of heating furnace efficiency.
Described furnace wall radiation loss heat is the furnace wall institute dispersed heat by heating furnace in heating furnace combustion fuel process, and it is relevant with the factor such as wind speed, temperature outside described heating furnace furnace wall, and the impact of wind speed is greater than the impact of temperature outside furnace wall.Temperature outside such as heating furnace furnace wall is lower and wind speed is larger time, described q2 can be set to 6, temperature outside heating furnace furnace wall is higher and wind speed is lower time, described q2 can be set to 3, its concrete numerical value can be undertaken choosing certain numerical value by experience according to the wind speed in selected moment, temperature.Because the heating furnace of same oil refining factory is all in same external environment, so when carrying out multiple heating furnace and measure in real time simultaneously, described in synchronization, furnace wall radiation loss heat (q2) need be set to identical numerical value.
Described index display module 300, it is for showing the energy efficiency indexes of described heating furnace, and described energy efficiency indexes comprises described second index.
After calculating described this energy efficiency indexes of second index by described data processing module 200, need the energy efficiency indexes of described heating furnace to display.For ease of intuitively showing described indication information, the energy efficiency indexes of described heating furnace can be shown by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.Described information form is as shown in the table:
Further, each grid of described information form can show different colors, to reflect the energy efficiency state of each heating furnace more intuitively according to the size of data difference of target energy.The color shows colour of each grid of described information form can by following color shows colour formulae discovery:
F=(V-L)/(H-L);
If F<0, (R, G, B)=(255* (0-F), 255* (0-F), 0);
If F>1, (R, G, B)=((F-1)/2*255,255/F, 0);
If 0≤F≤1, (R, G, B)=(0,255*F, 0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.
The max-thresholds of described energy efficiency indexes and minimum threshold all can set according to actual conditions, and the energy efficiency indexes threshold value of different heating-furnace is also different.The minimum threshold of the such as thermal efficiency can be set to 89%, and its max-thresholds is set to 100%; The minimum threshold of flue gas oxygen content is set to 1%, and its max-thresholds is 4% or 5%; Effluent gas temperature minimum threshold is set to 100 degrees Celsius, and its max-thresholds is set to 140 degrees Celsius or 130 degrees Celsius; The minimum threshold of furnace wall radiation loss heat can be set to 1%, and its max-thresholds can be set to 3%.
For heating furnace described in better Real-Time Monitoring also reflects the efficiency situation of described heating furnace comprehensively, described energy efficiency indexes comprises described first index and described second index.
In present embodiment, by obtaining the data of the first index of data module 100 Real-time Obtaining heating furnace, by data processing module 200, the data of described first index are passed through the data of process acquisition second index again, and then obtain the energy efficiency indexes of heating furnace and displayed by index display module 300, so the heating furnace energy efficiency monitoring device provided by present embodiment can the energy efficiency state of Real-Time Monitoring heating furnace.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of present invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (10)

1. a heating furnace energy efficiency monitoring method, is characterized in that, comprising:
The data of the first index of Real-time Obtaining heating furnace, described first index comprises effluent gas temperature, flue gas oxygen content;
The data of described first index are calculated the data of the second index by back balance computing method, described second index comprises the thermal efficiency;
Show the energy efficiency indexes of described heating furnace, described energy efficiency indexes comprises described second index.
2. heating furnace energy efficiency monitoring method as claimed in claim 1, is characterized in that: described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.
3. heating furnace energy efficiency monitoring method as claimed in claim 2, it is characterized in that: described first index also comprises flue-gas flow rate, described energy efficiency indexes comprises described first index and described second index.
4. heating furnace energy efficiency monitoring method as claimed in claim 1, be is characterized in that: the energy efficiency indexes of being shown described heating furnace by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.
5. heating furnace energy efficiency monitoring method as claimed in claim 4, is characterized in that: the color shows colour of each grid of described information form is by following formulae discovery:
F=(V-L)/(H-L);
If F<0, (R, G, B)=(255* (0-F), 255* (0-F), 0);
If F>1, (R, G, B)=((F-1)/2*255,255/F, 0);
If 0≤F≤1, (R, G, B)=(0,255*F, 0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.
6. a heating furnace energy efficiency monitoring device, is characterized in that, comprising:
Obtain data module, it is for the data of the first index of Real-time Obtaining heating furnace, and described first index comprises effluent gas temperature, flue gas oxygen content;
Data processing module, it is for calculating the data of the second index by back balance computing method by the data of described first index, described second index comprises the thermal efficiency;
Index display module, it is for showing the energy efficiency indexes of described heating furnace, and described energy efficiency indexes comprises described second index.
7. heating furnace energy efficiency monitoring device as claimed in claim 6, is characterized in that: described second index also comprises following index one or a combination set of: excess air coefficient, flue gas loss heat, furnace wall radiation loss heat.
8. heating furnace energy efficiency monitoring device as claimed in claim 7, it is characterized in that: described first index also comprises flue-gas flow rate, described energy efficiency indexes comprises described first index and described second index.
9. heating furnace energy efficiency monitoring device as claimed in claim 6, is characterized in that: described index display module shows the energy efficiency indexes of described heating furnace by information form; The longitudinal axis of described information form is described energy efficiency indexes, and transverse axis is described heating furnace, indicates the data of described energy efficiency indexes corresponding to described heating furnace in the grid of described information form.
10. heating furnace energy efficiency monitoring device as claimed in claim 9, is characterized in that: the color shows colour of each grid of described information form is by following formulae discovery:
F=(V-L)/(H-L);
If F<0,
(R,G,B)=(255*(0-F),255*(0-F),0)
If F>1,
(R,G,B)=((F-1)/2*255,255/F,0)
Otherwise
(R,G,B)=(0,255*F,0);
Wherein, V represents the data of energy efficiency indexes; H represents the max-thresholds of energy efficiency indexes; L represents the minimum threshold of energy efficiency indexes.
CN201410502999.XA 2014-09-26 Heating furnace energy efficiency monitoring method and device Active CN104236631B (en)

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