Innovative Approach in Fertiliser Production at GSFC Sikka

摘要

Gujarat State Fertilizers and Chemicals Ltd. (Sikka Unit) installed a diammonium phosphate (DAP) plant in 1986 with two streams and later added one more stream in 2001-02. Best available technologies were adopted at the design stage and provisions were provided such that grades other than DAP could also be produced with some modifications. In 2001-02, GSFC started production of APS (20:20:20:13) fertilisers. The existing trains were modified by adding a pre-neutraliser and sulphuric acid pump and making arrangements for meeting higher water requirement in fume scrubber. Simultaneous manufacturing of two products was achieved by making provisions for bagging one product while diverting other to the silo. In later years, the fuel oil-based boiler and combustion chambers were changed to natural gas. The other modifications involved improving reliability of refrigeration system at offsite and implementing schemes for savings in power consumption. The paper describes these efforts made in improving the energy efficiency and reliability of plant.