Production of petrochemicals from natural gas of Ca Voi Xanh field
Abstract
The discovery of Ca Voi Xanh gas field in 2011 with a large reserve (about 150 billion m3 recoverable) opened up the opportunity to develop a gas-based petrochemical industry in the central region of Vietnam. Besides using gas for power generation and industrial purposes, the Vietnam Oil and Gas Group has given priority to use up to 1.7 billion m3 of Ca Voi Xanh gas per year (equivalent to 1.0 billion m3 of hydrocarbon) for petrochemical production. With high content of CO2 (30% vol.), the suitable processing route for Ca Voi Xanh gas is methanol production, then converting methanol to olefins (MTO/MTP technology) and olefin derivatives. Through preliminary screening of market demand, production technologies and economic efficiency, potential olefin derivatives were selected, including ethylene chain (HDPE, SM/PS, and MMA) and propylene string (PP copolymer, the acrylic acids chemicals, 2-EH, n-butanol and 2-EHA derivatives, and n-butyl acrylate). 6 petrochemical complex schemes with Ca Voi Xanh gas consumption of about 1.7 billion m3 per year were evaluated and ranked. Based on assessment criteria such as production technology, product market opportunity, total investment and economic efficiency, the complex which has MTP technology to produce polypropylene copolymer has been rated the most potential for investment in 2023 after Ca Voi Xanh field is put into operation.
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