Optimization of Nitrogen Air Separation Plant with Experimental Method

摘要

Efficient and effective plant operations are essential. PT Samator Taiyo Nippon Sanso Indonesia (PT STNI) supplies Nitrogen gas with Air Separation Plant (ASP) Facilities to PT JFE Steel GaIvanizing Indonesia (PT JSGI) with production capacity of 1540 Nm~3/hr - 2320 Nm~3/hr and liquid Nitrogen regasification system to meet the needs up to 5000 Nm~3/hr. In its operation supplying nitrogen gas, was found a problem where frequent changes in customer consumption patterns affected the workload of nitrogen air separation facilities, where changes in consumption patterns could rise or fall with a range of 780 Nm~3/h or from minimum ASP capacity of 1540 Nm~3/hr to maximum capacity of ASP of 2320 Nm~3/hr, and automatic changes by ASP of only 100 Nm~3/hr range. To adjust the ASP load with the consumption pattern it needs to change the load by the operator. This affects the efficiency and effectiveness of operation, where in operation, electrical energy and raw materials of liquid nitrogen will be used excessively with a less responsive system. This paper discusses the effect of changes in compressor output range and control system and parameter adjustment to improve performance on consumption pattern changes, where the results obtained automatically change the ASP load adjustment by 780 Nm~3/hr with 3%/min changes.