Making fired bricks with spent equilibrium catalyst-a technical feasibility study
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Abstract
Fluid catalytic cracking in an oil refinery uses a catalyst, such as an alumino-silicate zeolite, in the conversion of heavy hydrocarbons to light hydrocarbons. A small fraction of the catalyst is continually replaced with fresh catalyst to maintain activity. In North America, more than 400 tons of spent alumino-silicate equilibrium catalyst (spent e-cat), and worldwide, more than 1,100 tons, are generated daily, most of which is disposed of in landfills (municipal and on-site facilities). In this study, three spent e-cat samples were tested in a value-added application that would utilize this waste in the manufacturing of fired bricks. The results of this study indicate that spent e-cat is a technically feasible raw material substitute for the clay and shale commonly used in fired brick production. Fired bricks produced with up to 30 wt% of spent e-cat showed good physical appearance and their water absorption properties met the ASTM C 62 specifications for building bricks of either the moderate- or severe-weathering grade.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Making fired bricks with spent equilibrium catalyst-a technical feasibility study |
| Series title | Journal of Solid Waste Technology and Management |
| DOI | 10.5276/JSWTM.2009.200 |
| Volume | 35 |
| Issue | 4 |
| Year Published | 2009 |
| Language | English |
| Publisher | The Journal of Solid Waste Technology and Management |
| Description | 9 p. |
| First page | 200 |
| Last page | 208 |
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