April 2006

Special Report: Petrochemical Developments

Maximize ammonia production cost-effectively

Operating company chooses to revamp the primary reformer to increase capacity of existing unit

Patel, R., Onquest Inc.,; West-Toolsee, E., PCS Nitrogen Ltd.

PCS Nitrogen Ltd. (a wholly owned subsidiary of Potash Corp.), operates four ammonia plants at the Point Lisas, Trinidad, facility. The smallest unit, the No. 3 ammonia plant with a nameplate capacity of 750 stpd was built in 1965 for Collier Carbon & Chemicals, Brea, California. In 1994, the plant was relocated to Point Lisas, Trinidad. Over time, the plant capacity was increased to 830 stpd through minor modifications – mostly to the back of the ammonia synthesis loop. Previous expansion studies showed that further rate increases were economical due to favorable natural gas (NG) costs in Trinidad. Likewise, new developments in ammonia converter technology would improve operating costs

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