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MEASUREMENT OF PASSAGE WEIGHT IN PIPE OF BULK SOLID IN TWO PHASE FLOWS-SOLID AND GASEOUS
MEASUREMENT OF PASSAGE WEIGHT IN PIPE OF BULK SOLID IN TWO PHASE FLOWS-SOLID AND GASEOUS
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机译：固，气两相流中大体积固体管道重量的测量
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摘要
PURPOSE:To achieve a measurement without causing problems of an increase in pressure loss and a friction of a sensor in actuality by making an adsorbing gas (C3H8) adsorb on a bulk solid (pulverized coal) being carried on a gas flow (nitrogen) within a pipe to measure an amount of adsorption thereof. CONSTITUTION:An amount of adsorption A1 (cc/kg) of an adsorbing gas G2 per unit weight of a bulk solid is determined at a pressure and a temperature within a gas flow conveyance pipe beforehand. A non-adsorbing gas G1 (hydrogen) is injected into a pipe through which the bulk solid is conveyed by a gas flow conveyance gas G0 at a fixed flow rate from an upstream part of the pipe and a gas flow conveyance mixed gas G0+G1 within the pipe is sampled at the downstream part of the pipe to measure a concn. B2 (cc/Nm3=ppm) in the mixed gas. Then, the gas G2 is injected at a fixed flow rate from the upstream part of the pipe and a mixed gas G0+G2 is sampled at the downstream part of the pipe to measure a concn. A2 (ppm) of the gas G2. Then, a weight (kg/Hr) of the bulk solid flowing through the pipe per unit time is calculated using a formula X=(A-A2.Bb2)/A [Y: amount (Nm3/Hr) of gas G0, A: total amount of gas G2 (cc/Hr) injected and B: amount of gas G1 (cc/Hr) injected].
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