Method for calculating proportion of main components of natural gas combustibles in real time
A technology for component ratio and real-time calculation, applied in the field of power engineering, can solve the problems of lack of natural gas main component data, large differences in the design parameters of natural gas main component ratio, and complex gas sources, so as to achieve the effect of improving combustion stability.
Active Publication Date: 2021-09-24
XIAN THERMAL POWER RES INST CO LTD
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[0002]
At present, the gas sources of gas turbine units in my country are complex, resulting in a large difference between the main component ratio of natural gas used in the actual operation process and the design parameters. The difference in the main component ratio of natural gas has a great impact on combustion stability, and most power plants only measure natural gas Calorific value data, there is no natural gas main component data, so how to use the existing data of power plants to calculate the proportion of natural gas main components in real time is of great significance
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[0099] The present invention is described in further detail below in conjunction with embodiment.
[0100] Gas turbine inlet and outlet gas real-time parameter collection;
[0101] Relying on the plant-level monitoring information system platform of thermal power plants, real-time collection of gas turbine inlet air and outlet flue gas real-time data, including air compressor inlet air temperature T air , pressure p air , volume flow V air , CO 2 Volume fraction Relative humidity Outlet flue gas temperature T fg , pressure p fg , volume flow V fg , CO 2 Volume fraction CO volume fraction Vol fg,CO 、H 2 O volume fraction And natural gas high calorific value Q HV,fuel and low heat generation Q LV,fuel .
[0102] Calculation of carbon balance;
[0103] The sources of carbon elements imported by gas turbines are CO in the air imported by air compressors 2 The carbon element contained in natural gas and the carbon element contained in natural gas are two parts....
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The invention discloses a method for calculating the proportion of main components of natural gas combustibles in real time. The method comprises the steps of 1, performing gas turbine inlet and outlet gas real-time parameter collection; 2, performing carbon element balance calculation; calculating the molar weight of carbon at the inlet of the gas turbine, and calculating the sum of the molar weights of CO2 and CO in the flue gas at the outlet of the gas turbine, so as to calculate the balance of the carbon; 3, performing hydrogen element balance calculation; calculating the molar weight of hydrogen at the inlet of the gas turbine, and calculating the molar weight of hydrogen contained in water molecules in flue gas at the outlet of the gas turbine, so as to calculate hydrogen balance; 4, calculating energy conservation; according to existing natural gas high calorific value and low calorific value data, performing energy conservation calculation on main components of combustible materials; and 5, calculating the volume fraction of the main components of the natural gas combustibles. The method can provide data support for power plant operation personnel to optimize operation and improve combustion stability, and has important guiding significance for improving the safe operation level of a unit.
Description
technical field [0001] The invention belongs to the technical field of power engineering, and in particular relates to a method for real-time calculation of the main component ratio of natural gas combustibles. Background technique [0002] At present, the gas sources of gas turbine units in my country are complex, resulting in a large difference between the main component ratio of natural gas used in the actual operation process and the design parameters. The difference in the main component ratio of natural gas has a great impact on combustion stability, and most power plants only measure natural gas There is no natural gas principal component data for calorific value data, so how to use the existing data of power plants to calculate the proportion of natural gas main components in real time is of great significance. Contents of the invention [0003] In order to overcome the deficiencies in the prior art above, the object of the present invention is to provide a method f...
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IPC IPC(8): G06Q50/06G06Q10/06
CPCG06Q50/06G06Q10/063Y04S10/50Y02E40/70Y02P90/84
Inventor 王博吴智群杜保华王大鹏李崇盛范奇
Owner XIAN THERMAL POWER RES INST CO LTD