Combined Heat and Power High Hydrogen Off Gas Application - Ningbo Hua Tai- Case Study

Ningbo Hua Tai operates a chemical plant producing 600,000 tons of polyethylene and styrene per year. Ningbo Hua Tai receives imported ethane/propane by international vessel unloading at Ningbo Beilun port. After mixing CNOOC Ningbo Daxie refinery dry gas as raw material, the company sends the mixed ethane/propane into the chemical cracking process unit (PDH/EDH) to produce ethylene/propylene, then produces polyethylene and styrene as major chemical products for the chemical plastic industry. At the same time, H2 off gas from the PDH/EDH cracking process is available after plant off gas balance. In order to increase plant fuel efficiency and reduce the cost of energy, Hua Tai chose three Titan 130 generator sets in a combined heat and power (CHP) system from Solar Turbines to make full utilization of this process H2 off gas.