Production of ammonium sulfate fertilizer from FGD-gypsum
- and others
The overall goal of this study is to assess the technical and economic feasibilities for producing marketable products including fertilizer-grade ammonium sulfate from gypsum produced as part of lime/limestone flue gas desulfurization (FGD) processes. Millions of tone of FGD-gypsum by-product may be produced in this decade as a result of the 1990 Clean Air Act Amendments. In this research, bench-scale experiments were conducted to obtain process data for the production of ammonium sulfate from FGD-gypsum and to help evaluate technical and economic feasibilities of the process. The FGD-gypsum sample produced from a Chiyoda Thoroughbred 121-FGD process installed on the Abbott power plant in Champaign, EL which was composed of 98.36% gypsum (CaSO{sub 4}{sm_bullet}2H{sub 2}O) and less than 0.01% calcium sulfite (CaSO) was used. The preliminary results of bench-scale experiments to evaluate the influence of reaction conditions to produce ammonium sulfate from FGD-gypsum are presented in this paper.
- OSTI ID:
- 214780
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
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