Liquid and Solid Fuel Drop Tubes

Purpose

The oxidation drop tube is designed to test rapid reaction kinetics and high temperatures. It has been used for studying a range of problems including ultra fine particle formation, ash transformations, coal devolatilization, char oxidation, flash smelting, NO char reactions, SO₃ formation, and SO₂ capture.

Physical Description

The drop tube is a laminar, entrained flow reactor, which allows testing at high temperature (up to 1750K) under a wide range of atmospheres, ranging from inert to pure oxygen. It is ideal for studying fast reaction kinetics, with times up to one second but can also be used over longer times for particles in the heated zone using a crucible. The energy is provided by an Astro model 1000A-3560 graphite element furnace.

ICSE has recently upgraded the drop tube by adding a semi-closed cooling system, reconstructing the gas and particle-feed systems, upgrading the particle and gas collection systems and redesigning the temperature control systems. The figure below presents a layout of the drop tube unit including particle injection and collecting systems.




Liquid and Solid Fuel Drop Tubes Purpose The oxidation drop tube is designed to test rapid reaction kinetics and high temperatures. It has been used for studying a range of problems including ultra fine particle formation, ash transformations, coal devolatilization, char oxidation, flash smelting, NO char reactions, SO₃ formation, and SO₂ capture. Physical Description The drop tube is a laminar, entrained flow reactor, which allows testing at high temperature (up to 1750K) under a wide range of atmospheres, ranging from inert to pure oxygen. It is ideal for studying fast reaction kinetics, with times up to one second but can also be used over longer times for particles in the heated zone using a crucible. The energy is provided by an Astro model 1000A-3560 graphite element furnace. ICSE has recently upgraded the drop tube by adding a semi-closed cooling system, reconstructing the gas and particle-feed systems, upgrading the particle and gas collection systems and redesigning the temperature control systems. The figure below presents a layout of the drop tube unit including particle injection and collecting systems.