CN107944132A - A kind of high-precision metallurgical gases simplify burning computational methods - Google Patents
A kind of high-precision metallurgical gases simplify burning computational methods Download PDFInfo
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- CN107944132A CN107944132A CN201711170900.0A CN201711170900A CN107944132A CN 107944132 A CN107944132 A CN 107944132A CN 201711170900 A CN201711170900 A CN 201711170900A CN 107944132 A CN107944132 A CN 107944132A
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- G—PHYSICS
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Abstract
A kind of high-precision metallurgical gases simplify burning computational methods, comprise the following steps：Obtain and be used for the initial data calculated of burning, including coal gas butt Lower heat value and butt smoke components；According to coal gas butt Lower heat value, the theoretical dry flue gas amount of theoretical dry air amount and the burning generation of unit volume dry gas needed for the burning of unit of account volume dry gas；According to theoretical dry air amount and theoretical dry flue gas amount, the fuel characteristic factor is calculated；According to butt smoke components and the fuel characteristic factor, excess air coefficient is calculated；The theoretical dry flue gas amount and excess air coefficient that theoretical dry air amount, the burning of unit volume dry gas according to needed for the burning of unit volume dry gas produce, the actual dry flue gas amount that the burning of unit of account volume dry gas produces.The present invention can analyze the burning calculating of metallurgical gases combustion apparatus as a result, process is simple and practical by metallurgical gases butt Lower heat value, have certain engineering value.
Description
Technical field
The invention belongs to gas fuel combustion technical field, and in particular to a kind of high-precision metallurgical gases simplify comburimeter
Calculation method.
Background technology
Iron and steel enterprise generates substantial amounts of metallurgical gases in Iron-smelting, and primary categories are blast furnace gas and converter coal
Gas.As the by-product resource of smelting process, blast furnace gas and coal gas of converter generally pass through gas boiler, hot-blast stove, heating furnace etc.
Combustion apparatus is utilized.
Calculating Fuelv combustion is one of metallurgical gases combustion apparatus thermodynamic computing and the essential link of performance evaluation.It is logical
Often, the comburimeter of metallurgical gases is based on metallurgical gases component and combustion chemistry equation, for this method, metallurgical coal at last
Gas compositional data is necessary input condition, and many project situations do not have the condition, such as metallurgical gases boiler operatiopn
The on-line monitoring of situation and analysis, most of steel plant all do not configure gas composition in-line analyzer, this results in metallurgical gases
Online burning calculating can not carry out, or can only use the data manually set, this certainly will influence the reliability of correlated results.
The content of the invention
The present invention's is directed to deficiency of the prior art, there is provided a kind of high-precision metallurgical gases simplify burning calculating side
Method.
To achieve the above object, the present invention uses following technical scheme：
A kind of high-precision metallurgical gases simplify burning computational methods, it is characterised in that comprise the following steps：
Obtain and be used for the initial data calculated of burning, including coal gas butt Lower heat value and butt smoke components, it is described dry
Base smoke components include O in dry flue gas2With the volume content percentage of CO；
According to coal gas butt Lower heat value, theoretical dry air amount and unit bodies needed for the burning of unit of account volume dry gas
The theoretical dry flue gas amount that product dry gas burning produces；
The reason that theoretical dry air amount and the burning of unit volume dry gas according to needed for the burning of unit volume dry gas produce
By dry flue gas amount, the fuel characteristic factor is calculated；
According to butt smoke components and the fuel characteristic factor, excess air coefficient is calculated；
The theory that theoretical dry air amount, the burning of unit volume dry gas according to needed for the burning of unit volume dry gas produce
Dry flue gas amount and excess air coefficient, the actual dry flue gas amount that the burning of unit of account volume dry gas produces.
To optimize above-mentioned technical proposal, the concrete measure taken further includes：
For blast furnace gas, pass through the theoretical dry air needed for the burning of the first calculation formula unit of account volume dry gas
Amount, first calculation formula are：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas)；
The theoretical dry flue gas amount produced by the burning of the second calculation formula unit of account volume dry gas, described second calculates
Formula is：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
For coal gas of converter, pass through the theoretical dry air needed for the burning of the 3rd calculation formula unit of account volume dry gas
Amount, the 3rd calculation formula are：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas)；
The theoretical dry flue gas amount produced by the burning of the 4th calculation formula unit of account volume dry gas, the described 4th calculates
Formula is：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
The fuel characteristic factor is calculated by the 5th calculation formula, the 5th calculation formula is：
Wherein, χ is the fuel characteristic factor；The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3
(dry gas)；For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas).
Excess air coefficient is calculated by the 6th calculation formula, the 6th calculation formula is：
Wherein, α is excess air coefficient；χ is the fuel characteristic factor；φ′(O2), φ ' (CO) be respectively O in dry flue gas2、
The volume content percentage of CO, %.
The actual dry flue gas amount produced by the burning of the 7th calculation formula unit of account volume dry gas, the described 7th calculates
Formula is：
Wherein, VgyThe actual dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；For unit
The theoretical dry flue gas amount that the burning of volume dry gas produces, m3/m3(dry gas)；For the reason needed for the burning of unit volume dry gas
By dry air amount, m3/m3(dry gas)；α is excess air coefficient.
The beneficial effects of the invention are as follows：Available for the simple performance examination of metallurgical gases combustion apparatus (such as industrial furnace and boiler)
Test, or online calculating etc. of burning of combustion metallurgical gases industrial furnace and boiler, without metallurgical gases elemental analysis data, pass through smelting
Golden coal gas butt Lower heat value can analyze the burning data of metallurgical gases combustion apparatus, and process is simple, practical, have certain
Engineering value.
Embodiment
Embodiment one
A kind of high-precision blast furnace gas simplifies burning computational methods, specifically includes following steps：
1st, obtain and be used for the initial data calculated of burning, including coal gas butt Lower heat value QD, netWith butt smoke components
(including O in dry flue gas2With the volume content percentage of CO).
2nd, the initial data obtained according to step 1, the burning for carrying out blast furnace gas are calculated, specifically included：
Theoretical dry air amount needed for the burning of 2.1 unit of account volume dry gasBurn and produce with unit volume dry gas
Theoretical dry flue gas amount
1) by the required theoretical dry air amount of the first calculation formula unit of account volume dry gas burning, first calculates public affairs
Formula is：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
2) the theoretical dry flue gas amount produced by the burning of the second calculation formula unit of account volume dry gas, second calculates public affairs
Formula is：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
2.2 calculate fuel characteristic factor χ by the 5th calculation formula, and the 5th calculation formula is：
Wherein, χ is the fuel characteristic factor；The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3
(dry gas)；For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas).
2.3 calculate excess air coefficient by the 6th calculation formula, and the 6th calculation formula is：
Wherein, α is excess air coefficient；φ′(O2), φ ' (CO) be respectively O in dry flue gas2, CO volume content percentage
Rate, %.
The 2.4 actual dry flue gas amounts produced by the burning of the 7th calculation formula unit of account volume dry gas, the 7th calculates
Formula is：
Wherein, VgyThe actual dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；For unit
The theoretical dry flue gas amount that the burning of volume dry gas produces, m3/m3(dry gas)；For the reason needed for the burning of unit volume dry gas
By dry air amount, m3/m3(dry gas)；α is excess air coefficient.
Below by taking certain experimental data as an example, the accurate simplified calculation method progress calculated and this patent is proposed is respectively adopted
Blast furnace gas combustion calculates, and the two result of calculation is contrasted, and to verify that this patent provides the reliability of method, table 1 is
Initial data needed for calculating, table 2 contrast for result of calculation.
1 initial data of table
2 result of calculation of table contrasts
Embodiment two
A kind of high-precision coal gas of converter simplifies burning computational methods, specifically includes following steps：
1st, obtain and be used for the initial data calculated of burning, including coal gas butt Lower heat value QD, netWith butt smoke components
(including O in dry flue gas2With the volume content percentage of CO).
2nd, the initial data obtained according to step 1, the burning for carrying out coal gas of converter are calculated, specifically included：
Theoretical dry air amount needed for the burning of 2.1 unit of account volume dry gasBurn and produce with unit volume dry gas
Theoretical dry flue gas amount
1) by the required theoretical dry air amount of the 3rd calculation formula unit of account volume dry gas burning, the 3rd calculates public affairs
Formula is：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
2) the theoretical dry flue gas amount produced by the burning of the 4th calculation formula unit of account volume dry gas, the 4th calculates public affairs
Formula is：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netFor coal
Gas butt Lower heat value, kJ/m3(dry gas).
2.2 calculate fuel characteristic factor χ by the 5th calculation formula, and the 5th calculation formula is：
Wherein, χ is the fuel characteristic factor；The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3
(dry gas)；For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas).
2.3 calculate excess air coefficient by the 6th calculation formula, and the 6th calculation formula is：
Wherein, α is excess air coefficient；φ′(O2), φ ' (CO) be respectively O in dry flue gas2, CO volume content percentage
Rate, %.
The 2.4 actual dry flue gas amounts produced by the burning of the 7th calculation formula unit of account volume dry gas, the 7th calculates
Formula is：
Wherein, VgyThe actual dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；For unit
The theoretical dry flue gas amount that the burning of volume dry gas produces, m3/m3(dry gas)；For the reason needed for the burning of unit volume dry gas
By dry air amount, m3/m3(dry gas)；α is excess air coefficient.
Below by taking certain experimental data as an example, the accurate simplified calculation method progress calculated and this patent is proposed is respectively adopted
Coal gas of converter burning calculates, and the two result of calculation is contrasted, and to verify that this patent provides the reliability of method, table 3 is
Initial data needed for calculating, table 4 contrast for result of calculation.
3 initial data of table
4 result of calculation of table contrasts
It can be seen from the above that this patent result of calculation and exact computation results are very close, its solving precision is sufficient for engineering
It is required that.
The present invention can analyze metallurgy without metallurgical gases elemental analysis data by metallurgical gases butt Lower heat value
The burn results of gas-fired equipment, process is simple and practical, has certain engineering value, available for metallurgical gases combustion apparatus
(such as industrial furnace and boiler) simple performance test, or online calculating etc. of burning of combustion metallurgical gases industrial furnace and boiler.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, should be regarded as the protection of the present invention
Scope.
Claims (6)
1. a kind of high-precision metallurgical gases simplify burning computational methods, it is characterised in that comprise the following steps：
Obtain and be used for the initial data calculated of burning, including coal gas butt Lower heat value and butt smoke components, the butt cigarette
Gas component includes O in dry flue gas2With the volume content percentage of CO；
According to coal gas butt Lower heat value, theoretical dry air amount and unit volume needed for the burning of unit of account volume dry gas are done
The theoretical dry flue gas amount that gas-fired produces；
The theory that theoretical dry air amount and the burning of unit volume dry gas according to needed for the burning of unit volume dry gas produce is done
Exhaust gas volumn, calculates the fuel characteristic factor；
According to butt smoke components and the fuel characteristic factor, excess air coefficient is calculated；
The theoretical dry cigarette that theoretical dry air amount, the burning of unit volume dry gas according to needed for the burning of unit volume dry gas produce
Tolerance and excess air coefficient, the actual dry flue gas amount that the burning of unit of account volume dry gas produces.
2. a kind of high-precision metallurgical gases as claimed in claim 1 simplify burning computational methods, it is characterised in that：
For blast furnace gas, pass through the theoretical dry air amount needed for the burning of the first calculation formula unit of account volume dry gas, institute
Stating the first calculation formula is：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netDone for coal gas
Base Lower heat value, kJ/m3(dry gas)；
The theoretical dry flue gas amount produced by the burning of the second calculation formula unit of account volume dry gas, second calculation formula
For：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netDone for coal gas
Base Lower heat value, kJ/m3(dry gas).
3. a kind of high-precision metallurgical gases as claimed in claim 1 simplify burning computational methods, it is characterised in that：
For coal gas of converter, pass through the theoretical dry air amount needed for the burning of the 3rd calculation formula unit of account volume dry gas, institute
Stating the 3rd calculation formula is：
Wherein,For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netDone for coal gas
Base Lower heat value, kJ/m3(dry gas)；
The theoretical dry flue gas amount produced by the burning of the 4th calculation formula unit of account volume dry gas, the 4th calculation formula
For：
Wherein,The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；QD, netDone for coal gas
Base Lower heat value, kJ/m3(dry gas).
4. a kind of high-precision metallurgical gases simplify burning computational methods as claimed in claim 2 or claim 3, it is characterised in that：It is logical
Cross the 5th calculation formula and calculate the fuel characteristic factor, the 5th calculation formula is：
Wherein, χ is the fuel characteristic factor；The theoretical dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry coal
Gas)；For the theoretical dry air amount needed for the burning of unit volume dry gas, m3/m3(dry gas).
5. a kind of high-precision metallurgical gases as claimed in claim 4 simplify burning computational methods, it is characterised in that：Pass through
Six calculation formula calculate excess air coefficient, and the 6th calculation formula is：
Wherein, α is excess air coefficient；χ is the fuel characteristic factor；φ′(O2), φ ' (CO) be respectively O in dry flue gas2, CO
Volume content percentage, %.
6. a kind of high-precision metallurgical gases as claimed in claim 5 simplify burning computational methods, it is characterised in that：Pass through
The actual dry flue gas amount that the burning of seven calculation formula unit of account volume dry gas produces, the 7th calculation formula are：
Wherein, VgyThe actual dry flue gas amount produced for the burning of unit volume dry gas, m3/m3(dry gas)；For unit volume
The theoretical dry flue gas amount that dry gas burning produces, m3/m3(dry gas)；Done for the theory needed for the burning of unit volume dry gas
Air capacity, m3/m3(dry gas)；α is excess air coefficient.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109655488A (en) * | 2018-12-17 | 2019-04-19 | 江苏海事职业技术学院 | Calorific value of gas flexible measurement method based on mixed gas preheated burning |
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| CN104021290A (en) * | 2014-06-05 | 2014-09-03 | 中冶华天工程技术有限公司 | Fuel combustion calculating method under coal dust and blast furnace gas mixed combustion condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655488A (en) * | 2018-12-17 | 2019-04-19 | 江苏海事职业技术学院 | Calorific value of gas flexible measurement method based on mixed gas preheated burning |
| CN109655488B (en) * | 2018-12-17 | 2021-03-30 | 江苏海事职业技术学院 | Gas calorific value soft measurement method based on mixed gas preheating combustion |
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