(EnergyAsia, April 18 2012, Wednesday) — China Petroleum & Chemical Corp (Sinopec) is planning to expand its existing 160,000 b/d oil refinery and petrochemical complex on Hainan Island.Together with the Hainan provincial government, the company is hoping to obtain Beijing’s approval this year for the proposed 39-billion-yuan investment to add 100,000 b/d of refining capacity…