EPA Science Inventory

APPARATUS FOR SHORT TIME MEASUREMENTS IN A FIXED-BED, GAS/SOLID REACTOR

Citation:

Gullett*, B K., K. Bruce, AND R. Machilek. APPARATUS FOR SHORT TIME MEASUREMENTS IN A FIXED-BED, GAS/SOLID REACTOR. REVIEW OF SCIENTIFIC INSTRUMENTS. American Institute of Physics, 61(2):904-906, (1990).

Description:

An apparatus for exposure of a solid to reactive process gas is described which makes possible short time (≥ 0.3 to 15 s) exposures in a fixed-bed reactor. Operating conditions for differential reaction with respect to the gas concentration and rapid quench for arresting high-temperature reactions are made possible by high gas flowrates through the sample bed. The residence time of solid exposure to the reactive gases is timed by a photosensor emitter/detector and oscilloscope. For times under 2 s, the standard deviation of the residence times is less than 10 ms. The ease of apparatus construction and operation, the operable temperature range (ambient to 850 °C), and the reproducibility of residence times down to 0.3 s makes the apparatus ideal for kinetic studies of rapid gas/solid reactions. Review of Scientific Instruments is copyrighted by The American Institute of Physics.

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 02/01/1990
Completion Date: 02/01/1990
Record Last Revised: 07/12/2007
Record Created: 12/08/2004
Record Released: 04/02/2005
OMB Category: Other
Record ID: 128899

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

AIR POLLUTION PREVENTION AND CONTROL DIVISION

AIR POLLUTION TECHNOLOGY BRANCH