Standard gas generation control method, system and standard gas distribution instrument under working conditions

Abstract

This application discloses a standard gas generation control method, system and standard gas distribution instrument. The control method and system are applied to the standard gas distribution instrument, specifically to obtain the heated gasification mixing bin that is transported to the standard gas distribution instrument. The reagent volume of the reagent in the system is used. At the same time, the temperature sensor is used to obtain the temperature change of the working condition under the current working condition. Then the preset ideal gas equation is used to calculate the temperature change of the working condition to obtain the corrected vaporization coefficient. Finally, the corrected vaporization coefficient is used Calculate the reagent volume to obtain the actual volume of the reagent gas after vaporization of the reagent under the current working conditions. Since the occurrence control method provided by this application refers to the temperature change of the current working condition, the volume of the reagent gas obtained after vaporization of the reagent is consistent with the actual situation and has no deviation from the actual volume value, which also makes the standard gas The actual concentration value of the gas distribution instrument is consistent with the reagent concentration, thereby avoiding errors when calibrating the gas analysis system.

Description

technical field [0001] The present application relates to the technical field of environmental protection, and more specifically, to a method and system for controlling generation of standard gas under working conditions, and a standard gas distribution instrument. Background technique [0002] In my country's "National Urban Domestic Garbage Harmless Treatment Facilities Construction "Eleventh Five-Year" Plan", it is pointed out that in cities with developed economy, domestic garbage calorific value meets the conditions, and land resources are tight, the development of incineration treatment technology can be increased; newly added cities There are 479 facilities for the harmless treatment of domestic waste, including 82 waste incineration plants, accounting for 17.1%. The average daily processing capacity of a single incineration plant is about 810 tons. And during the "Eleventh Five-Year Plan" period, it is planned that the harmless treatment rate of urban domestic waste w...

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Problems solved by technology

[0007] When it is necessary to obtain a standard gas with a specific concentration, the standard gas distribution instrument needs to mix a certain volume of gasification reagent with a certain volume of carrier gas to obtain it. Since the standard gas distribution instrument is calibrated at the factory under standard conditions , Calibration is generally carried out under standard conditions, and the working temperature of the production site will generally deviate from the standard temperature, resulting in a deviation between the volume of the reagent gas generated under the working conditions and the displayed volume value, which will cause As a result, there is a large error between the displayed concentration value and the actual concentration of the standard gas, which will cause a certain error when using the standard gas to calibrate the gas analysis system

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