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Coal gas flow measuring method based on heat value measurement

A technology of gas flow and measurement method, which is applied in the application of thermal effect to detect fluid flow and other directions, to achieve accurate measurement results

Active Publication Date: 2012-12-26
NANJING IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this method cannot fundamentally solve the gas imbalance phenomenon. So far, there is no relevant literature at home and abroad to provide a scientific explanation for the cause of this phenomenon.

Method used

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  • Coal gas flow measuring method based on heat value measurement
  • Coal gas flow measuring method based on heat value measurement
  • Coal gas flow measuring method based on heat value measurement

Examples

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Embodiment Construction

[0033] Take the design technical parameters of a heating furnace in a factory as an example, and calculate the gas consumption under the ambient temperature in winter and summer respectively under the condition that the heating furnace has not been modified. Furnace output of the heating furnace (cold charge rating): 100t / h, billet size: 150*150*12000, billet entering furnace temperature 30°C, billet heating temperature: 1150°C, unit fuel consumption (cold charge): 290*4.18kJ / kg. Fuel type: Calculated based on the above coke oven gas composition. Before the calorific value calculation was implemented, the measured hourly consumption values ​​of coke oven gas in winter and summer in the plant were respectively: the hourly meter measured value in winter was 6865m 3 / h or so, the measured value of the hour meter in summer is 7042m 3 / h, from the results, the hourly consumption in winter is less than the hourly consumption in summer, but from the perspective of heat, the hourly...

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Abstract

The invention discloses a coal gas flow measuring method based on heat value measurement. The method comprises the following steps of: firstly, calculating low heat values of gas fuel in winter and summer, heat absorbed by steel billets when the steel billets are heated from 0 DEG C to 30 DEG C, and fuel consumption quantity of continuous production heating furnace steel billets from 30 DEG C to a tapping temperature; and measuring coal gas flow according to a chemical energy equivalent principle of the coal gas, so as to obtain the coal gas flow. With the adoption of the method, a traditional coal gas clearing form is changed; a heat value is included into a clearing method; a measurement result is accurate; thereby changing a phenomenon that coal gas flow output and use of user sides are unbalanced.

Description

technical field [0001] The invention relates to a gas flow measurement method, in particular to a gas flow measurement method based on calorific value measurement. Background technique [0002] In the traditional measurement of gas flow in iron and steel enterprises, there has always been an imbalance between gas output and user end usage, especially in winter. In order to alleviate the impact of this phenomenon on the gas settlement of iron and steel enterprises, the usual method is to manually adjust the balance. But this method can not fundamentally solve the phenomenon of unbalanced gas, so far, there is no relevant literature at home and abroad to scientifically explain the reasons for this phenomenon. [0003] In order to explain the unbalanced gas settlement phenomenon from a scientific point of view, through the study of a large number of technical materials such as "Fuel and Combustion", "Reference Materials for Design of Industrial Furnaces in Iron and Steel Plant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/68
Inventor 董书云张林宋皎
Owner NANJING IRON & STEEL CO LTD
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