A multi-stage process for reducing the environmental contaminants in a ISO 8217 compliant Feedstock Heavy Marine Fuel Oil involving a core desulfurizing process and an ionic liquid extraction desulfurizing process as either a pre-treating step or post-treating step to the core process. The Product Heavy Marine Fuel Oil is compliant with ISO 8217A for residual marine fuel oils and has a sulfur level has a maximum sulfur content (ISO 14596 or ISO 8754) between the range of 0.05% wt. to 0.5% wt. A process plant for conducting the process is also disclosed.
一种用于减少符合 ISO 8217 标准的原料重质船用燃料油中环境污染物的多阶段工艺,包括核心脱
硫工艺和
离子液体萃取脱
硫工艺,
离子液体萃取脱
硫工艺可作为核心工艺的预处理步骤或后处理步骤。产品重质船用燃料油符合 ISO 8217A 关于残余船用燃料油的标准,
硫含量(ISO 14596 或 ISO 8754)在 0.05%(重量)到 0.5%(重量)之间。此外,还公开了一种用于实施该工艺的加工设备。