A concept of sustainable synthesis, design, and innovation of integrated chemical processes with the overall objective to achieve zero or negative waste emissions is proposed. Available potential energy sources for power and heat generation processes are integrated into a consolidated energy supply sub-network. Available possible water sources and treatment technologies including wastewater recycling are integrated into a water sub-network. For identified target products, existing and potential processing routes are integrated into a superstructure representing a process sub-network. The above three sub-networks when combined lead to the formation of a consolidated optimization framework, which represents the multiple sub-networks at different scales and includes environmental impacts as constraints, for an integrated sustainable synthesis-design problem definition. A decomposition-based strategy is employed to solve the optimization problem to obtain the design of a totally integrated and sustainable process with positive economic benefits and low energy consumption, together with low carbon and pollutant emissions. The applicability of the framework and solution steps are illustrated through a conceptual but realistic case study under different scenarios.

提出了一种可持续合成化学设计的可持续合成，设计和创新的概念，其总体目标是实现零或负废物排放。用于发电和供热过程的可用潜在能源已集成到一个整合的能源供应子网络中。可用的水源和包括废水回收在内的处理技术已集成到水子网络中。对于确定的目标产品，现有的和潜在的处理路径被集成到代表过程子网的上层结构中。将上述三个子网组合在一起，便形成了一个整合的优化框架，该框架代表了不同规模的多个子网，并将环境影响作为约束条件，一个综合的可持续综合设计问题定义。采用基于分解的策略来解决优化问题，从而获得具有积极经济效益，低能耗以及低碳和污染物排放的完全集成且可持续的流程设计。框架和解决方案步骤的适用性通过在不同情况下的概念性但现实的案例研究进行了说明。