CN107270323B - A kind of biomass fuel is oxygen-enriched/and total oxygen chaos burns real-time diagnosis system and method - Google Patents
A kind of biomass fuel is oxygen-enriched/and total oxygen chaos burns real-time diagnosis system and method Download PDFInfo
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- CN107270323B CN107270323B CN201710350626.9A CN201710350626A CN107270323B CN 107270323 B CN107270323 B CN 107270323B CN 201710350626 A CN201710350626 A CN 201710350626A CN 107270323 B CN107270323 B CN 107270323B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention provide a kind of biomass fuel it is oxygen-enriched/total oxygen chaos burning real-time diagnosis system and method, using biomass fuel as incendiary agent, using hot-air as atomizing medium, it burns in atomization blowing to combustion chamber after the two is mixed, while being sent into the hot-air that oxygen concentration is 24 ~ 99.5vt% and guaranteeing that biomass fuel burns under the conditions of oxygen-enriched/total oxygen；The real-time burning chamber pressure of monitoring, it is identified based on time series chaotic characteristic theoretical, real-time diagnosis is carried out to combustion efficiency, the blowing state of incendiary agent is adjusted according to diagnostic result, combustion state is set to be maintained at chaos state, it solves the problems, such as the real-time diagnosis of complete, high combustion efficiency the chaos combustion state of biomass fuel oil firing, has many advantages, such as that detection accuracy is high, testing efficiency is high, strong robustness.
Description
Technical field
The present invention relates to a kind of biomass fuel it is oxygen-enriched/total oxygen chaos burn real-time diagnosis system and method, belong to the energy
With field of environmental technology.
Background technique
It is also increasing to the demand of energy fuel with the fast development of metallurgical industry.China's metallurgical furnace kiln is about
It is 140,000, consume energy in year 8.2 hundred million tons of mark coals, and the 19.86% of Zhan Quanguo total energy consumption, account for the 30% of industrial total energy consumption, non-ferrous metallurgical furnace
Kiln accounts for 60% or more of metallurgical furnace kiln sum.Various metallurgical industry furnaces in process of production, it is energy-saving, reduce operating cost,
It reduces environmental pollution etc. and to have become the key that smelter seeks survival in market competition, tries for the development.In current metallurgical work
In industry kiln burning system, energy fuel mostly uses greatly the fossils such as coal, petroleum class A fuel A or industrial gas etc., but these are fired
Material not only belongs to non-renewable energy resources, but also due to containing higher element sulphur in these fuel, the particulate matter of discharge and
Sulfide also results in serious atmosphere and environmental pollution, and energy consumption is higher.In order to alleviate the energy crisis got worse, reduce greatly
Gas environmental pollution and the sustainable development for promoting economic society certainly will need environmental protection, reproducible bio-fuel substitution conventional
The energy.
Strengthen the core technology that heat supply process is metallurgical furnace kiln energy efficiency, existing metallurgical furnace kiln is strengthened heat supply and generally adopted
With the mode for increasing oxygen-enriched/fuel duty, bath smelting furnace, which increases oxygen-enriched supply and washes away there are excessive whipping splash, to be caused
Converter life is short, stirring unevenly causes valuable metal content in clinker high low with metal direct yield, and heating furnace increasing fuel
Supply there are furnace fuel combustions incomplete, furnace temperature unevenly the causes metal works being heated overheat burning and product are become a useful person
The low problem of rate.In order to which combustion system nonlinear characteristic is described, Daw etc. establishes a kind of simple model to burned
Cheng Jinhang research, and think that there may be chaotic characteristics in nonlinear combustion process；But it is being mixed at present in combustion system
The understanding of ignorant characteristic is also insufficient.Currently, the main application of biomass fuel is to mention in biomass energy trans-utilization technology
Pure high-grade liquid fuel and directly burning, but since biomass fuel oil viscosity is big, efficiency of combustion is lower, general burner mist
Change poor quality, heat loss due to incomplete combustion is larger.
Summary of the invention
The object of the present invention is to provide a kind of biomass fuel it is oxygen-enriched/total oxygen chaos burn real-time diagnosis system and method,
Using biomass fuel as incendiary agent, using hot-air as atomizing medium, after the two is mixed atomization blowing in combustion chamber into
Row burning, while being sent into the hot-air that oxygen concentration is 24 ~ 99.5vt% and guaranteeing that biomass fuel burns under the conditions of oxygen-enriched/total oxygen；
The real-time burning chamber pressure of monitoring, it is theoretical based on the identification of time series chaotic characteristic, to combustion efficiency progress real-time diagnosis, according to diagnosis
As a result the blowing state for adjusting incendiary agent, makes combustion state be maintained at chaos state.The present invention realize biomass fuel it is oxygen-enriched/
The real-time monitoring and examination of all-oxygen combustion state solve the low critical issue of biomass fuel incomplete combustion, efficiency of combustion.
The present invention is implemented with the following technical solutions:
A kind of biomass fuel is oxygen-enriched/and total oxygen chaos burns real-time diagnosis system, including biomass fuel oil burner, chamber pressure
Sensor and chaotic identification system；Chamber pressure sensor is placed in the combustion chamber of biomass fuel oil burner, and with chaotic identification system
System is connected by conducting wire, can carry out data signal transmission；Chaotic identification system is according to the chamber pressure data pair of chamber pressure sensor transmissions
Combustion state is identified.
Preferably, the biomass fuel oil burner is industrial furnace high pressure internal-mixing atomization blowing biomass fuel oil firing
Device.
A kind of biomass fuel is oxygen-enriched/and total oxygen chaos burns real-time diagnosis method, and by biomass fuel filtering, it is dehydrated and adds
Pressure heating, while air pressurized being heated, then the two is mixed, biomass fuel is sent by the intermittent blowing of high-pressure atomization
The combustion chamber of burner, and it is sent into combustion adjuvant ignition, while being sent into the hot-air that oxygen concentration is 24 ~ 99.5vt%；Pass through room
Pressure sensor measures chamber pressure data in combustion chamber, and each operating point measures the chamber pressure data of 500 ~ 10000 circulations, is transmitted to chaos
Identifying system is identified: when final metric value is 0, illustrating that combustion state is in periodic state, when final metric value is greater than 0
When, illustrate that the combustion state is in chaos state, when final metric value is less than 0, illustrates that combustion state is in state pseudoperiod.
Preferably, biomass fuel pressurized, heated is to 1.0MPa, 50 ~ 80 DEG C.
Preferably, air pressurized is heated to 1.2 ~ 1.7MPa, 160 ~ 80 DEG C.
Preferably, combustion adjuvant is 0# diesel oil.
The principle of the invention: the ventricular pressure signal x of biomass fuel burner is obtained by chamber pressure sensor1It is transmitted to
Chaotic identification system, chaotic identification system is by chamber pressure time series x1(length isN) be divided intoQA subset x singly increased1,j(length
Forn j ), so that, whereinj=0,1,2,…,Q- 1, andn 0=n；Increase subset x to single1,jCarry out ascending order arrangement；Meter
Calculate each single greatest gradient for increasing subsetS j , and to x1,jIn identical value according to time index carry out ascending order arrangement；By slope subset
S is divided intoPA single increasing subset Vk(length ism k ), so that, whereink=0,1,2,…,P- 1, andm 0>2；For
Each Vk, calculate standard deviation S,k , and derive corresponding growth rateμ k =μ(N k ,n)=log(1+σ S,k )/logN；It is based onμ k
Set, utilize following formula:
Gained is derived, whereinu k =m k /P.When final metric value λ (n) be 0 when, illustrate that combustion state is in periodic state, when
When final metric value is greater than 0, illustrates that the combustion state is in chaos state, when final metric value is less than 0, illustrate combustion state
In state pseudoperiod.
The beneficial effects of the present invention are:
1, intermittent injection method helps to increase biomass fuel efficiency of combustion in a combustion chamber, is easy to light a fire, play
Fuel-efficient effect；
2, the ventricular pressure signal that biomass fuel oil firing is obtained by chamber pressure sensor helps to monitor combustion efficiency in real time；
3, propose based on biomass fuel it is oxygen-enriched/the Chaotic diagnosis method of total oxygen spray burning chamber pressure, efficiently precisely, and root
According to diagnostic result, adjusts incendiary agent and be blown state, combustion state is made to be maintained at chaos state ,/total oxygen oxygen-enriched to raising biomass
Efficiency of combustion play a significant role.
Detailed description of the invention
Fig. 1 is flow diagram of the present invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment
A kind of biomass fuel is oxygen-enriched/and total oxygen chaos burns real-time diagnosis system, including biomass fuel oil burner, chamber pressure
Sensor and chaotic identification system；Chamber pressure sensor is placed in the combustion chamber of biomass fuel oil burner, and with chaotic identification system
System is connected by conducting wire, can carry out data signal transmission；Chaotic identification system is according to the chamber pressure data pair of chamber pressure sensor transmissions
Combustion state is identified.The biomass fuel oil burner is the atomization blowing biomass fuel combustion of industrial furnace high pressure internal-mixing
Burner.
By biomass fuel (such as Jatropha curcas oil, rubber seed oil, liquefying lignin bio oil) filtering, it is dehydrated and pressurizes
Air pressurized is heated to 1.2MPa, 160 DEG C to 1.0MPa, 80 DEG C by heat, and the two is passed through automatic regulating valve door control dress
It sets in the high-pressure oil gas mixing chamber for being sent into biomass fuel oil burner and is mixed；High pressure blow smelting operation oil gun is from biomass fuel oil firing
In the surrounding insertion combustion chamber of device, the mixture of the air after biomass fuel and pressurized, heated is passed through into high pressure mist by nozzle
The mode for changing intermittent blowing is sent into combustion chamber, is burnt using 0# diesel oil as combustion adjuvant auxiliary firing, while being sent into oxygen concentration
For the hot-air of 24 ~ 99.5vt%；Chamber pressure data time series in combustion chamber are measured by chamber pressure sensor, each operating point is surveyed
Take the chamber pressure data of 500 ~ 10000 circulations, i.e. x1, it is transmitted to chaotic identification system, chaotic identification system is by chamber pressure time series x1
(length isN=500 ~ 10000) it is divided intoQ=1000 subset x singly increased1,j(length isn j ), so that,
Inj=0,1,2,…,Q- 1, andn 0=n=50；Increase subset x to single1,jCarry out ascending order arrangement；Calculate each single greatest gradient for increasing subsetS j , and to x1,jIn identical value according to time index carry out ascending order arrangement；Slope subset S is divided intoP=998 single increasing subsets
Vk(length ism k ), so that, whereink=0,1,2,…,P- 1, andm 0>2；For each Vk, calculate standard
Deviations S,k , and derive corresponding growth rateμ k =μ(N k ,n)=log(1+σ S,k )/logN；It is based onμ k Set, utilize following public affairs
Formula:
Gained is derived, whereinu k =m k /P.When final metric value λ (n) be 0 when, illustrate that combustion state is in periodic state, when
When final metric value is greater than 0, illustrates that the combustion state is in chaos state, when final metric value is less than 0, illustrate combustion state
In state pseudoperiod.
In order to illustrate the computational problem of slope, following example is used as explanation.
Consider time series QUOTE , i.e. x1=(4, 8,22,11,3,2,13,5,14,24,27,
17,12,7,13,9,19,10,6,30), wherein there is 30 numerical value.Consider x114 subsets:
x1,0=(4,8,22,11,3,2),
x1,1=(4,8,22,11,3,2,13),
x1,2=(4,8,22,11,3,2,13,5),
x1,3=(4,8,22,11,3,2,13,5,14),
x1,4=(4,8,22,11,3,2,13,5,14,24),
x1,5=(4,8,22,11,3,2,13,5,14,24,27),
x1,6=(4,8,22,11,3,2,13,5,14,24,27,17),
x1,7=(4,8,22,11,3,2,13,5,14,24,27,17,12),
x1,8=(4,8,22,11,3,2,13,5,14,24,27,17,12,7),
x1,9=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13),
x1,10=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13,9),
x1,11=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13,9,19),
x1,12=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13,9,19,10),
x1,13=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13,9,19,10,6),
x1,14=(4,8,22,11,3,2,13,5,14,24,27,17,12,7,13,9,19,10,6,30),
Ascending order arrangement is carried out to each subset, respectively obtains the sequence of its serial number:
A1,0=(6,5,1,2,4,3),
A1,1=(6,5,1,2,4,7,3),
A1,2=(6,5,1,8,2,4,7,3),
A1,3=(6,5,1,8,2,4,7,9,3).
A1,4=(6,5,1,8,2,4,7,9,3,10),
A1,5=(6,5,1,8,2,4,7,9,3,10,11),
A1,6=(6,5,1,8,2,4,7,9,12,3,10,11),
A1,7=(6,5,1,8,2,4,13,7,9,12,3,10,11),
A1,8=(6,5,1,8,14,2,4,13,7,9,12,3,10,11),
A1,9=(6,5,1,8,14,2,4,13,7,15,9,12,3,10,11),
A1,10=(6,5,1,8,14,2,16,4,13,7,15,9,12,3,10,11),
A1,11=(6,5,1,8,14,2,16,4,13,7,15,9,12,17,3,10,11),
A1,12=(6,5,1,8,14,2,16,18,4,13,7,15,9,12,17,3,10,11),
A1,13=(6,5,1,8,19,14,2,16,18,4,13,7,15,9,12,17,3,10,11),
A1,14=(6,5,1,8,19,14,2,16,18,4,13,7,15,9,12,17,3,10,11,20),
Consider index series (A1,j, 0≤j≤14) in pairs neighbor difference as slope, in A1,0In have 6 tiltedly
Rate, in A1,14In have 9 slopes.Therefore, greatest gradient is the gradient maxima in this four sequences.In this instance, for
A0,1, A1,1, A1,2, A1,3, A1,4, A1,5, A1,6, A1,7, A1,8, A1,9, A1,10, A1,11, A1,12, A1,13And A1,4, have respectivelyS 0=2,S 1=
3,S 2=7,S 3=7,S 4=7,S 5=7,S 6=7,S 7=9,S 8=9,S 9=9,S 10=14,S 11=14,S 12=14,S 13=14 andS 14=14。
In this example, σ S,k It is allS 0, S 1, S 2... standard deviation, i.e., 14362；
μ k =log(1+σ S,k )/logNIt is 0.5425,0.5728,0.6179,0.6418,0.6655,0.6816,
0.7001,0.7167,0.7297,0.7405 ...；
u k =m k /PIt is 0.0025,0.0034,0.0042,0.0051,0.0059,0.0067,0.0076,0.0084,
0.0093,0.0101 ...；
It is 0.0025,0.0034,0.0042,0.0051,0.0059,
0.0068,0.0076,0.0084,0.0093,0.010 ...；
It is 0.8432.
> 0, illustrate that the biomass combustion state under the situation is chaos combustion state.
Above in conjunction with attached drawing, the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (6)
1. a kind of biomass fuel is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, this method biomass fuel it is oxygen-enriched/total oxygen
It is carried out in chaos burning real-time diagnosis system, which included biomass fuel oil burner, chamber pressure sensor and chaotic identification
System；Chamber pressure sensor is placed in the combustion chamber of biomass fuel oil burner, and is connect with chaotic identification system by conducting wire, can
Carry out data signal transmission；Chaotic identification system identifies combustion state according to the chamber pressure data of chamber pressure sensor transmissions；
By biomass fuel filtering, dehydration and pressurized, heated, while by air pressurization, heating, hot-air is obtained, then will
The two mixing, is sent into biomass fuel burner by way of the intermittent blowing of high-pressure atomization, and be sent into combustion adjuvant
Ignition, while being sent into the hot-air that oxygen concentration is 24 ~ 99.5vt%；Chamber pressure number in combustion chamber is measured by chamber pressure sensor
According to being transmitted to chaotic identification system and identified: when final metric value is 0, illustrating that combustion state is in periodic state, when most
When whole metric is greater than 0, illustrates that the combustion state is in chaos state, when final metric value is less than 0, illustrate at combustion state
In state pseudoperiod.
2. biomass fuel according to claim 1 is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, which is characterized in that
The biomass fuel oil burner is industrial furnace high pressure internal-mixing atomization blowing biomass fuel oil burner.
3. biomass fuel according to claim 1 is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, which is characterized in that
Biomass fuel pressurized, heated is to 1.0MPa, 50 ~ 80 DEG C.
4. biomass fuel according to claim 1 is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, which is characterized in that
Air pressurized is heated to 1.2 ~ 1.7MPa, 160 ~ 80 DEG C.
5. biomass fuel according to claim 1 is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, which is characterized in that
Combustion adjuvant is 0# diesel oil.
6. biomass fuel according to claim 1 is oxygen-enriched/total oxygen chaos burns real-time diagnosis method, which is characterized in that
Each operating point measures the chamber pressure data of 500 ~ 10000 circulations.
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| KR20060087071A (en) * | 2005-01-28 | 2006-08-02 | 주식회사 경동네트웍 | System and control method of oil burner' suitable burning ratio using air pressure sensor |
| CN203687089U (en) * | 2013-12-06 | 2014-07-02 | 昆明理工大学 | Vegetable fat or bio-oil combustion system adopting high-pressure internally-mixing type atomization and injection manner for industrial furnace |
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| CN205402784U (en) * | 2016-02-14 | 2016-07-27 | 北京德意孚科技发展有限公司 | Automatic negative -pressure firing ware of surplus coefficient of adjustment air |
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