WO2019100683A1 - 基于煤气热值和烟气成分的转炉煤气成分软测量方法 - Google Patents
基于煤气热值和烟气成分的转炉煤气成分软测量方法 Download PDFInfo
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- 239000007789 gas Substances 0.000 title claims abstract description 261
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003546 flue gas Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 76
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 25
- 239000000446 fuel Substances 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 238000011056 performance test Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- WYROLENTHWJFLR-ACLDMZEESA-N queuine Chemical compound C1=2C(=O)NC(N)=NC=2NC=C1CN[C@H]1C=C[C@H](O)[C@@H]1O WYROLENTHWJFLR-ACLDMZEESA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
- G16Z99/00—Subject matter not provided for in other main groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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- the invention belongs to the technical field of energy-saving furnaces, and particularly relates to a soft measuring method of converter gas components based on gas calorific value and smoke component.
- steel mills mainly digest converter gas through industrial combustion furnaces (such as steel rolling furnaces, gas boilers, etc.).
- the fuel composition is an important input condition, which is an important basis for the operation and combustion adjustment of the combustion furnace.
- the changes and fluctuations of the fuel composition will affect the safety and economic operation of the combustion furnace.
- some steel companies are currently equipped with gas calorific value online analyzers, but most steel companies do not have gas analyzer online analyzers for furnaces. Steel mills are still based on artificial settings. Gas composition.
- the composition of the converter gas is difficult to maintain stable, often in a fluctuating state, and the artificial set value is likely to deviate greatly from the current true value, which will largely interfere with the combustion.
- the operation judgment of the furnace operator affects the optimal operation of the furnace.
- the present invention provides a soft measuring method for a converter gas component based on a gas calorific value and a flue gas component, and the converter gas component is identified by the gas calorific value and the flue gas component, and the result can be a combustion furnace. It provides a basis for safe and economic operation, and solves the inconvenience and difficulty brought by the on-line analyzer of most of the steel furnaces in the furnace of the steel furnace to the operation of the furnace, and has good engineering practical value.
- the present invention adopts the following technical solutions:
- a soft measuring method for a converter gas component based on a gas calorific value and a flue gas component characterized in that it comprises the following steps:
- the volume fraction of N2 in the dry gas is calculated.
- the burner flue gas composition includes a volume content percentage of O 2 , CO, and CO 2 in the dry flue gas.
- the first calculation formula is:
- the fuel characteristic factor ⁇ is calculated by a third calculation formula, and the third calculation formula is:
- ⁇ is the fuel property factor;
- the excess air coefficient is calculated by a fourth calculation formula, which is:
- ⁇ is the excess air coefficient
- ⁇ ′(O 2 ) and ⁇ ′(CO) are the volume content percentages of O 2 and CO in the dry flue gas, respectively.
- the actual dry flue gas volume produced by the combustion of the unit volume dry gas is calculated by the fifth calculation formula, and the fifth calculation formula is:
- V gy is the actual dry flue gas volume produced by the combustion of dry gas per unit volume, m 3 /m 3 (dry gas); The theoretical dry flue gas volume produced for the combustion of dry gas per unit volume, m 3 /m 3 (dry gas); The theoretical dry air amount required to burn a unit of dry gas, m 3 /m 3 (dry gas); ⁇ is the excess air ratio.
- the sixth calculation formula is:
- ⁇ (CO) is the volume content percentage of CO in dry gas, %
- V gy is the actual dry flue gas volume produced by unit gas dry gas combustion, m 3 /m 3 (dry gas);
- ⁇ ′(O 2 ) The percentage of volume content of O 2 in dry flue gas, %.
- the seventh calculation formula is:
- ⁇ (H 2 ) is the volume content percentage of H 2 in dry gas, %
- Q d net is the low calorific value of converter gas dry basis, kJ/m 3
- ⁇ (CO) is the volume content of CO in dry gas percentage,%.
- the eighth calculation formula is:
- ⁇ (O 2 ) is the volume content percentage of O 2 in dry gas, %;
- ⁇ (CO) is the volume content percentage of CO in dry gas, %;
- ⁇ (H 2 ) is the volume content of H 2 in dry gas percentage,%;
- the ninth calculation formula is:
- ⁇ (CO 2 ) and ⁇ (CO) are the volume content percentages of CO 2 and CO in dry gas, respectively;
- V gy is the actual dry flue gas volume produced by unit gas dry gas combustion;
- ⁇ ′(CO 2 ) ⁇ '(CO) is the volume content percentage of CO 2 and CO in dry flue gas, respectively.
- the volume content percentage of N 2 in the dry gas is calculated by the tenth calculation formula, and the tenth calculation formula is:
- ⁇ (N 2 ), ⁇ (CO), ⁇ (CO 2 ), ⁇ (H 2 ), ⁇ (O 2 ) are the volumes of N 2 , CO, CO 2 , H 2 , O 2 in the dry gas, respectively. Percentage of content, %.
- the invention is used for soft measurement of the gas component of the converter gas burning furnace, and the result can provide a basis for the safe and economic operation of the furnace, and solves the problem that most steel plants are not equipped with the converter gas component online analyzer.
- the inconvenience and difficulty caused by the operation of the furnace has good engineering practical value;
- the invention can also be used for the thermal efficiency performance test of the combustion furnace. As long as the gas calorific value is measured by the gas calorimeter and the smoke component is measured by the flue gas analyzer, the gas component can be identified and used for the performance calculation of the furnace. And analysis, avoiding the gas sampling and testing work required by the traditional method, especially for the rapid measurement of the thermal efficiency of the combustion furnace;
- the gas component measurement result of the invention has high accuracy and reliability, low cost and good implementability.
- Fig. 1 is a flow chart for calculating the composition of a converter gas component of the present invention.
- a soft measuring method for a converter gas component based on gas calorific value and flue gas composition as shown in FIG. 1 specifically includes the following steps:
- step 1 solving the gas composition of the converter gas combustion furnace, specifically including the following steps:
- the second calculation formula is:
- ⁇ is the fuel property factor;
- the fourth calculation formula is:
- ⁇ is the excess air coefficient
- ⁇ ′(O 2 ) and ⁇ ′(CO) are the volume content percentages of O 2 and CO in the dry flue gas, respectively.
- the fifth calculation formula is:
- V gy is the actual dry flue gas volume produced by the combustion of dry gas per unit volume, m 3 /m 3 (dry gas); The theoretical dry flue gas volume produced for the combustion of dry gas per unit volume, m 3 /m 3 (dry gas); The theoretical dry air amount required to burn a unit of dry gas, m 3 /m 3 (dry gas); ⁇ is the excess air ratio.
- ⁇ (CO) is the volume content percentage of CO in dry gas, %
- V gy is the actual dry flue gas volume produced by unit gas dry gas combustion, m 3 /m 3 (dry gas);
- ⁇ ′(O 2 ) The percentage of volume content of O 2 in dry flue gas, %.
- the seventh calculation formula is:
- ⁇ (H 2 ) is the volume content percentage of H 2 in dry gas, %
- Q d net is the low calorific value of converter gas dry basis, kJ/m 3
- ⁇ (CO) is the volume content of CO in dry gas percentage,%.
- ⁇ (O 2 ) is the volume content percentage of O 2 in dry gas, %;
- ⁇ (CO) is the volume content percentage of CO in dry gas, %;
- ⁇ (H 2 ) is the volume content percentage of H2 in dry gas ,%;
- the ninth calculation formula is:
- ⁇ (CO 2 ) and ⁇ (CO) are the volume content percentages of CO 2 and CO in dry gas, respectively;
- V gy is the actual dry flue gas volume produced by unit gas dry gas combustion;
- ⁇ ′(CO 2 ) ⁇ '(CO) is the volume content percentage of CO 2 and CO in dry flue gas, respectively.
- ⁇ (N 2 ), ⁇ (CO), ⁇ (CO 2 ), ⁇ (H 2 ), ⁇ (O 2 ) are the volumes of N 2 , CO, CO 2 , H 2 , O 2 in the dry gas, respectively. Percentage of content, %.
- the gas component measurement result of the invention has high accuracy and reliability, low cost and good implementability.
- the method is applied to the soft measurement of the gas composition of the converter gas burning furnace, and the result can provide a basis for the safe and economic operation of the furnace, and solves the problem that most steel plants are not equipped with the converter gas component online analyzer to the furnace.
- the inconvenience and difficulty brought by the operation have good engineering practical value.
- it can also be used in the thermal efficiency performance test of the combustion furnace. As long as the gas calorific value is measured by the gas calorimeter and the smoke component is measured by the flue gas analyzer, the gas component can be identified and used for calculation and analysis of the performance of the furnace. It avoids the gas sampling and testing work required by the traditional method, and is especially suitable for the rapid measurement of the thermal efficiency of the combustion furnace.
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Abstract
一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,包括以下步骤:通过测量获取有效数据,有效数据包括转炉煤气干基低位热值和燃烧炉烟气成分,燃烧炉烟气成分包括干烟气中O2、CO和CO2的容积含量百分率;根据获得的有效数据,求解转炉煤气燃烧炉入炉煤气成分。本发明解决了目前大多数钢铁厂均未配置入炉转炉煤气成分在线分析仪给燃烧炉运行带来的不便和困难,具有很好的工程实用价值。还可用于燃烧炉热效率性能试验,只要通过煤气热值仪测得煤气热值、通过烟气分析仪测得烟气成分,即可辨识出煤气成分,进而用于燃烧炉性能计算和分析,避免了传统方法需要的煤气取样和化验工作,尤其适用于燃烧炉热效率的快速测算。
Description
本发明属于燃烧炉节能技术领域,具体涉及基于煤气热值和烟气成分的转炉煤气成分软测量方法。
钢铁企业在炼钢工序中产生了大量的转炉煤气,作为冶炼过程的副产资源,转炉煤气的高效回收利用是钢铁企业节能降耗工作的重点之一。
目前,钢厂主要通过工业燃烧炉(如轧钢加热炉、煤气锅炉等)来消化转炉煤气。对于燃烧炉,燃料成分是重要的输入条件,是燃烧炉运行操作和燃烧调整的重要依据,燃料成分的变化与波动会影响到燃烧炉的安全和经济运行。然而,由于条件所限,目前部分钢铁企业配置了煤气热值在线分析仪,但大多数钢铁企业都未给燃烧炉配置煤气成分在线分析仪,钢厂基本上仍然是以人为设定值作为当前的煤气成分。而实际上,受上游冶炼工序等因素的影响,转炉煤气的成分很难保持稳定,经常处于波动状态,人为设定值很可能会大大偏离当前真实值,这就会在很大程度上干扰燃烧炉运行人员的操作判断,影响燃烧炉的优化运行。
发明内容
本发明的针对现有技术中的不足,提供一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,通过煤气热值和烟气成分辨识出转炉煤气成分,结果可为燃烧炉的安全和经济运行提供依据,以解决目前大多数钢铁厂燃烧炉均未配置入炉煤气成分在线分析仪给燃烧炉运行带来的不便和困难,具有很好的工程实用价值。
为实现上述目的,本发明采用以下技术方案:
一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于,包括以下步骤:
通过测量获取转炉煤气干基低位热值和燃烧炉烟气成分;
根据转炉煤气干基低位热值,计算单位体积干煤气燃烧所需的理论干空气量和单位体积干煤气燃烧产生的理论干烟气量;
根据单位体积干煤气燃烧所需的理论干空气量和单位体积干煤气燃烧产生的理论干烟气量计算燃料特性因子;
根据燃料特性因子和燃烧炉烟气成分,计算过量空气系数;
根据单位体积干煤气燃烧所需的理论干空气量、单位体积干煤气燃烧产生的理论干烟气量和过量空气系数,计算单位体积干煤气燃烧产生的实际干烟气量;
根据单位体积干煤气燃烧产生的实际干烟气量和燃烧炉烟气成分,计算干煤气中CO的容积含量百分率;
根据转炉煤气干基低位热值和干煤气中CO的容积含量百分率,计算干煤气中H2的容积含量百分率;
根据干煤气中CO的容积含量百分率、干煤气中H2的容积含量百分率和单位体积干煤气燃烧所需的理论干空气量,计算干煤气中O
2的容积含量百分率;
根据单位体积干煤气燃烧产生的实际干烟气量、燃烧炉烟气成分和干煤气中CO的容积含量百分率,计算干煤气中CO
2的容积含量百分率;
根据干煤气中CO、CO
2、H
2、O
2的容积含量百分率,计算干煤气中N2的容积含量百分率。
为优化上述技术方案,采取的具体措施还包括:
所述燃烧炉烟气成分包括干烟气中O
2、CO和CO
2的容积含量百分率。
通过第一计算公式计算单位体积干煤气燃烧所需的理论干空气量,所述第一计算公式为:
通过第二计算公式计算单位体积干煤气燃烧产生的理论干烟气量,所述第二计算公式为:
通过第三计算公式计算燃料特性因子χ,所述第三计算公式为:
通过第四计算公式计算过量空气系数,所述第四计算公式为:
其中,α为过量空气系数;φ′(O
2)、φ′(CO)分别为干烟气中O
2、CO的容积含量百分率,%。
通过第五计算公式计算单位体积干煤气燃烧产生的实际干烟气量,所述第五计算公式为:
其中,V
gy为单位体积干煤气燃烧产生的实际干烟气量,m
3/m
3(干煤气);
为单位体积干煤气燃烧产生的理论干烟气量,m
3/m
3(干煤气);
为单位体积干煤气燃烧所需的理论干空气量,m
3/m
3(干煤气);α为过量空气系数。
通过第六计算公式计算干煤气中CO的容积含量百分率,所述第六计算公式为:
φ(CO)=2.532V
gy(21-φ′(O
2))-52.367
其中,φ(CO)为干煤气中CO的容积含量百分率,%;V
gy为单位体积干煤气燃烧产生的实际干烟气量,m
3/m
3(干煤气);φ′(O
2)为干烟气中O
2的容积含量百分率,%。
通过第七计算公式计算干煤气中H
2的容积含量百分率,所述第七计算公式为:
其中,φ(H
2)为干煤气中H
2的容积含量百分率,%;Q
d,net为转炉煤气干基低位热值,kJ/m
3;φ(CO)为干煤气中CO的容积含量百分率,%。
通过第八计算公式计算干煤气中O
2的容积含量百分率,所述第八计算公式为:
其中,φ(O
2)为干煤气中O
2的容积含量百分率,%;φ(CO)为干煤气中CO的容积含量百分率,%;φ(H
2)为干煤气中H
2的容积含量百分率,%;
为单位体积干煤气燃烧所需的理论干空气量,m
3/m
3(干煤气)。
通过第九计算公式计算干煤气中CO
2的容积含量百分率,所述第九计算公式为:
φ(CO
2)=V
gy[φ′(CO
2)+φ′(CO)]-φ(CO)
其中,φ(CO
2)、φ(CO)分别为干煤气中CO
2、CO的容积含量百分率,%;V
gy为单位体积干煤气燃烧产生的实际干烟气量;φ′(CO
2)、φ′(CO)分别为干烟气中CO
2、CO的容积含量百分率,%。
通过第十计算公式计算干煤气中N
2的容积含量百分率,所述第十计算公式为:
φ(N
2)=100-φ(CO)-φ(CO
2)-φ(H
2)-φ(O
2)
其中,φ(N
2)、φ(CO)、φ(CO
2)、φ(H
2)、φ(O
2)分别为干煤气中N
2、CO、CO
2、H
2、O
2的容积含量百分率,%。
本发明的有益效果是:
1)本发明用于转炉煤气燃烧炉入炉煤气成分的软测量,结果可为燃烧炉的安全和经济运行提供依据,解决了目前大多数钢铁厂均未配置入炉转炉煤气成分在线分析仪给燃烧炉运行带来的不便和困难,具有很好的工程实用价值;
2)本发明还可用于燃烧炉热效率性能试验,只要通过煤气热值仪测得煤气热值、通过烟气分析仪测得烟气成分,即可辨识出煤气成分,进而用于燃烧炉性能计算和分析,避免了传统方法需要的煤气取样和化验工作,尤其适用于燃烧炉热效率的快速测算;
3)本发明煤气成分测算结果具有较高的准确度和可靠性,且成本低,具有良好的可实施性。
图1是本发明的转炉煤气成分计算求解流程图。
现在结合附图对本发明作进一步详细的说明。
如图1所示的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,具体包 括以下步骤:
1、通过测量获取转炉煤气干基低位热值Q
d,net和燃烧炉烟气成分(包括干烟气中O
2、CO和CO
2的容积含量百分率)。
2、根据步骤1获得的有效数据,求解转炉煤气燃烧炉入炉煤气成分,具体包括以下步骤:
2)通过第二计算公式计算单位体积干煤气燃烧产生的理论干烟气量,第二计算公式为:
2.2通过第三计算公式计算燃料特性因子χ,第三计算公式为:
2.3通过第四计算公式计算过量空气系数,第四计算公式为:
其中,α为过量空气系数;φ′(O
2)、φ′(CO)分别为干烟气中O
2、CO的容积含量百分率,%。
2.4通过第五计算公式计算单位体积干煤气燃烧产生的实际干烟气量,第五计算公式为:
其中,V
gy为单位体积干煤气燃烧产生的实际干烟气量,m
3/m
3(干煤气);
为单位体积干煤气燃烧产生的理论干烟气量,m
3/m
3(干煤气);
为单位体积干煤气燃烧所需的理论干空气量,m
3/m
3(干煤气);α为过量空气系数。
2.5通过第六计算公式计算干煤气中CO的容积含量百分率φ(CO),第六计算公式为:
φ(CO)=2.532V
gy(21-φ′(O
2))-52.367
其中,φ(CO)为干煤气中CO的容积含量百分率,%;V
gy为单位体积干煤气燃烧产生的实际干烟气量,m
3/m
3(干煤气);φ′(O
2)为干烟气中O
2的容积含量百分率,%。
2.6通过第七计算公式计算干煤气中H
2的容积含量百分率,第七计算公式为:
其中,φ(H
2)为干煤气中H
2的容积含量百分率,%;Q
d,net为转炉煤气干基低位热值,kJ/m
3;φ(CO)为干煤气中CO的容积含量百分率,%。
2.7通过第八计算公式计算干煤气中O
2的容积含量百分率,第八计算公式为:
其中,φ(O
2)为干煤气中O
2的容积含量百分率,%;φ(CO)为干煤气中CO的容积含量百分率,%;φ(H
2)为干煤气中H2的容积含量百分率,%;
为单位体积干煤气燃烧所需的理论干空气量,m
3/m
3(干煤气)。
2.8通过第九计算公式计算干煤气中CO
2的容积含量百分率,第九计算公式为:
φ(CO
2)=V
gy[φ′(CO
2)+φ′(CO)]-φ(CO)
其中,φ(CO
2)、φ(CO)分别为干煤气中CO
2、CO的容积含量百分率,%;V
gy为单位体积干煤气燃烧产生的实际干烟气量;φ′(CO
2)、φ′(CO)分别为干烟气中CO
2、CO的容积含量百分率,%。
2.9通过第十计算公式计算干煤气中N
2的容积含量百分率,第十计算公式为:
φ(N
2)=100-φ(CO)-φ(CO
2)-φ(H
2)-φ(O
2)
其中,φ(N
2)、φ(CO)、φ(CO
2)、φ(H
2)、φ(O
2)分别为干煤气中N
2、CO、CO
2、H
2、O
2的容积含量百分率,%。
本发明的煤气成分测算结果具有较高的准确度和可靠性,且成本低,具有良好的可实施性。该方法用于转炉煤气燃烧炉入炉煤气成分的软测量,结果可为燃烧炉的安全和经济运行提供依据,解决了目前大多数钢铁厂均未配置入炉转炉煤气成分在线分析仪给燃烧炉运行带来的不便和困难,具有很好的工程实用价值。此外,还可用于燃烧炉热效率性能试验,只要通过煤气热值仪测得煤气热值、通过烟气分析仪测得烟气成分,即可辨识出煤气成分,进而用于燃烧炉性能计算和分析,避免了传统方法需要的煤气取样和化验工作,尤其适用于燃烧炉热效率的快速测算。
以上仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,应视为本发明的保护范围。
Claims (10)
- 一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于,包括以下步骤:通过测量获取转炉煤气干基低位热值和燃烧炉烟气成分;根据转炉煤气干基低位热值,计算单位体积干煤气燃烧所需的理论干空气量和单位体积干煤气燃烧产生的理论干烟气量;根据单位体积干煤气燃烧所需的理论干空气量和单位体积干煤气燃烧产生的理论干烟气量计算燃料特性因子;根据燃料特性因子和燃烧炉烟气成分,计算过量空气系数;根据单位体积干煤气燃烧所需的理论干空气量、单位体积干煤气燃烧产生的理论干烟气量和过量空气系数,计算单位体积干煤气燃烧产生的实际干烟气量;根据单位体积干煤气燃烧产生的实际干烟气量和燃烧炉烟气成分,计算干煤气中CO的容积含量百分率;根据转炉煤气干基低位热值和干煤气中CO的容积含量百分率,计算干煤气中H2的容积含量百分率;根据干煤气中CO的容积含量百分率、干煤气中H2的容积含量百分率和单位体积干煤气燃烧所需的理论干空气量,计算干煤气中O 2的容积含量百分率;根据单位体积干煤气燃烧产生的实际干烟气量、燃烧炉烟气成分和干煤气中CO的容积含量百分率,计算干煤气中CO 2的容积含量百分率;根据干煤气中CO、CO 2、H 2、O 2的容积含量百分率,计算干煤气中N2的容积含量百分率。
- 如权利要求1所述的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于:所述燃烧炉烟气成分包括干烟气中O 2、CO和CO 2的容积含量百分率。
- 如权利要求2所述的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于:通过第一计算公式计算单位体积干煤气燃烧所需的理论干空气量,所述第一计算公式为:通过第二计算公式计算单位体积干煤气燃烧产生的理论干烟气量,所述第二计算公式为:通过第三计算公式计算燃料特性因子χ,所述第三计算公式为:
- 如权利要求5所述的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于:通过第六计算公式计算干煤气中CO的容积含量百分率,所述第六计算公式为:φ(CO)=2.532V gy(21-φ′(O 2))-52.367其中,φ(CO)为干煤气中CO的容积含量百分率,%;V gy为单位体积干煤气燃烧产生的实际干烟气量,m 3/m 3(干煤气);φ′(O 2)为干烟气中O 2的容积含量百分率,%。
- 如权利要求8所述的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于:通过第九计算公式计算干煤气中CO 2的容积含量百分率,所述第九计算公式为:φ(CO 2)=V gy[φ′(CO 2)+φ′(CO)]-φ(CO)其中,φ(CO 2)、φ(CO)分别为干煤气中CO 2、CO的容积含量百分率,%;V gy为单位体积干煤气燃烧产生的实际干烟气量;φ′(CO 2)、φ′(CO)分别为干烟气中CO 2、CO的容积含量百分 率,%。
- 如权利要求9所述的一种基于煤气热值和烟气成分的转炉煤气成分软测量方法,其特征在于:通过第十计算公式计算干煤气中N 2的容积含量百分率,所述第十计算公式为:φ(N 2)=100-φ(CO)-φ(CO 2)-φ(H 2)-φ(O 2)其中,φ(N 2)、φ(CO)、φ(CO 2)、φ(H 2)、φ(O 2)分别为干煤气中N 2、CO、CO 2、H 2、O 2的容积含量百分率,%。
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