Study on improvement of determination method of instrumental constant for identifying tendency of coal to spontaneous combustion by oxygen absorption
ZHANG Jin-jing
Abstract：This paper introduced the method principal, instrument and equipment, determination conditions, instrument calibration and determination steps of oxygen absorption amount of coal in identifying tendency of coal to spontaneous combustion by oxygen absorption, combining with determination method of instrumental constant in GB/T 20104—2006 Method for identifying tendency of coal to spontaneous combustion by oxygen absorption with chromatograph , the specific improvement of instrumental constant determination method and result comparison and analysis were demonstrated, it was discovered that using the deduction of dead volume method after improvement to determine the instrumental constant could not only meet the requirements of the average relative deviation in international standard, but also reduce the determination duration of instrumental constant and simplify the complex operation procedures, so the accuracy requirement of desorption peak area in oxygen absorption method could be met, and the test efficiency could be improved as well.
Keywords：tendency of coal to spontaneous combustionidentification method of chromatography oxygen absorptionoxygen absorption amount of coalinstrument constantcorrection factordeduction dead volume methoddesorption peak area
Publication Date：2015-01-01
Pages：5( 51-55 )