Apparatus and process for testing exhaust gas catalyst systems
Abstract
Abstract AN APPARATUS AND PROCESS FOR TESTING CATALYTIC SYSTEMS USED IN THE TREATMENT OF EXHAUSTS FROM HYDROCARBON COMBUSTION ENGINES. THE APPARATUS COMPROSES A SYSTEM WHICH INCLUDES A REACTOR SYSTEM HOLDING A SAMPLE TUBE. THE SAMPLE TUBE IS PROVIDED WITH A DIAMETRALLY REDUCED PORTION HAVING A GLASS WOOL PLUG THEREIN AND THE CATALYST TO BE TESTED IS DISPOSED UPON THIS PLUG. THE SAMPLE TUBE IS INSERTED IN AN ELECTRIC RESISTANCE HEATER OR FURNACE. A PREDETERMINED EXHAUST GAS MIXTURE OR MIXTURES IS PASDED THROUGH THE CATALYST BED AT A DISIRED TEST TEMPERATURE. PERIODICALLY, WITHOUT REMOVING THE CATALYST SAMPLE FROM THE SAMPLE TUBE, A PRESSURE DROP MEASUREMENT IS MADE ACROSS THE SAMPLE TUBE IN ORDER TO DETERMINE THE DEGRADATION OF THE CATALYST BED. THE EXHAUST GAS MIXTURES ARE PASSED THROUGH THE CATALYST BED AT A PREDETERMINED RATE DESIGNED FOR LABORATORY SCALE EQUIPMENT. HOWEVER, WHEN THE PRESSURE DROP MEASUREMENT IS MADE, A CAREFULLY CONTROLLED AND PRECISELY REPRODUCIBLE GAS FLOW RATE APPROPRIATE FOR MEASURING CATALYST DEGRADATION BY PRESSURE DROP MEASUREMENT IS USED.
Inventors
- 👤 Charles R Penquite
- 👤 George E Barker
Bibliographic Details
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