LNG接收站空压制氮系统联合设计

Co-design for air compressor and nitrogen generation systems of LNG terminal

将LNG接收站中空压系统和制氮系统联合设计,由3台空压机(2开1备)向整个系统供气,3台空压机均采用无油螺杆空压机,其中1台常开空压机采用变频技术。通过流程优化及采用新技术,联合设计不仅能提高整个空压制氮系统的安全性,设备易于维修和保养,而且降低设备的运行费用。

Co-design for air compressor and nitrogen generation systems of LNG terminal was studied. Compress air of the whole system was supplied by three air compressors （2 in operation, 1 stand-by）. Oil-free screw air compressors were selected, while one of the running air compressors was driven by variable-frequency motor. The results indicate that by means of process optimization design and new technology, the co-design system is improved in the security with convenient mainte- nance and reduced operation cost.