ANALYSIS FOR TAR IN GAS FORMED BY GASIFICATION OF COAL

摘要

PURPOSE:To analyze the total quantity of tar having 150-600 deg.C b.p. with good accuracy from (A-C)+B by measuring the quantity A of the concentrated tar (150-500 deg.C b.p.), the quantity B of the dry solid tar (300-600 deg.C b.p.) and the quantity of the concentrated tar (300-500 deg.C b.p.) yielded by remelting of the dry solid tar after the weight measurement by gas chromatography. CONSTITUTION:The tar in the gas formed by the gasification of coal is adsorbed to an adsorbent and is dissolved in a toluene, etc., by which the tar is recovered. The tar soln. is concentrated and about 2mul the concentrated soln. of the tar is conducted to a gas chromatographic instrument, by which the tar-component is quantitatively determined. As a result, the quantity A of the tar having 150- 500 deg.C b.p. is obtd. The remaining concentrated soln. of the tar is dried and is weighed by a chemical balance, etc., by which the quantity B of the tar having 300-600 deg.C b.p. is obtd. The dry solid tar after the weight measurement is dissolved again by toluene, etc. and the tar-component is quantitatively determined by the gas chromatographic instrument. The quantity C of the tar having 300- 500 deg.C b.p. is thus obtd. The total weight of the tar having 150-600 deg.C b.p. is calculated from (A-C)+B.