In order to reveal energy flow dynamics of sanitary ceramic unit processes and whole production chain, a hybrid Petri net-based model is established through analyzing respectively the energy consumption mechanism of sanitary ceramics discrete flow and continuous flow processes. For evaluating the energy consumption performance and further reducing its energy intensity of production chain, an evaluation method is proposed based on specific energy indicators. Finally, using the data from the energy management system, the proposed model and method are validated through simulation experiments. The results show that the proposed hybrid Petri net-based model can, from unit processes to whole production chain, clearly reflect the driving mechanism and process characteristics of energy flow. The optimal specific energy of production chain is 4.4119 MJ/kg when productivity of 8 t ball mill, 40 t ball mill, injection molding, glazing, and firing are 0.478 t/h, 2.353 t/h, 2.6385 t/h, 2.6519 t/h, and 2.62 t/h, respectively. Thus, speed matching between unit processes has great influence on the energy consumption performance of process chain.%为揭示卫浴陶瓷生产工艺链能流特性,评估其能耗性能,降低制造过程能耗强度,分别分析了卫浴陶瓷离散流与连续流工艺能耗过程机理,基于混合Petri网建立了单元工艺以及全工艺链能流特性模型,并提出一种基于比能耗的工艺链能耗性能评估方法.利用能源管理系统采集的数据,对所提模型与方法进行了仿真验证.结果表明,所建混合Petri网模型能够从工艺单元到全工艺链清晰反映能耗驱动机理、能流过程特征等;当8 t、40 t球磨机的生产率分别为0.478 t/h、2.353 t/h,成型、施釉、烧成工艺的生产率分别为2.6385 t/h、2.6519 t/h、2.62 t/h,工艺链比能耗最优为4.4119 MJ/kg,工艺间速度匹配对工艺链能耗性能具有较大影响.
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