Ammonia

Summary

The ammonia is produced using atomospheric nitrogen and hydrogen which is produced mainly by the hydrocarbons such as the natural gas, and it is used as raw materials for such as fertilizer or the chemical.

Experience

In 1960's, TOYO had its own ammonia process and had licenced it to Japanese, Korean, Indian and Bangladesh customers. In 1968, based on detailed investigations of a large scale ammonia plant designed, TOYO decided to execute a general license agreement with KBR. In 1969, TOYO builts and commissioned its first 1,000 t/d class ammonia plant in Japan by integrating its own experience and know-how in designing ammonia plant with the KBR process. At the same time in 1969, TOYO was awarded a contract for a 1,360 t/d plant by a customer in the former USSR. The plant was the largest ammonia plant in the world at that time; it was followed by licensing KBR ammonia plants worldwide. Up to now TOYO's experience in ammonia plant including the plants based on our own and other processes amounts to 78 projects. In accordance with the current market requirements for large scale plant, TOYO has built a 2,050 t/d ammonia plant in Iran, the capacity of which is the largest capacity in the world. As a technology oriented contractor, TOYO has always endeavored to improve plant efficiency and to reduce plant life cycle cost by, for instance, applying the high activated steam reforming catalyst, ISOP catalyst, which was developed by TOYO.

TOYO's strategy for efficiency and the requirement of large-scale plant

TOYO is now in a position to license the most advanced ammonia technology from KBR, called the KAAPplus™ Process, incorporating the excess air secondary reforming with heat exchanger primary reformer (KRES™), cold box impurity removal (Purifier) and low pressure ammonia synthesis over ruthenium catalyst KAAP. These process units are already in operation and well proven in commercial plants; a 4,000 t/d design has been standardized for the advanced process.