Process plant layout has received interest in the processing industry because of its impact on the installation costs and process safety. This work proposes a model to allocate process units in tri-dimensional (3D) space, based on a non-overlapping projection approach represented as a disjunctive model; the modeling equations include both multi-floor and safety constraints. The mathematical formulation undergoes a disaggregation procedure, so that the model becomes an MINLP problem. The solution of the MINLP model uses the GAMS modeling environment. Four case studies make it possible to show the scope of this non-overlapping model. Besides, the results obtained undergo comparison against a real process allocation and previous reports from the literature. The comparison reveals that the proposed approach is a competitive alternative to get the 3D process plant layout solution.

由于加工厂布局会影响安装成本和过程安全性，因此加工厂布局引起了加工业的关注。这项工作提出了一种模型，该模型基于表示为析取模型的非重叠投影方法，在三维（3D）空间中分配处理单元。建模方程包括多层约束和安全约束。数学公式经过分解程序，因此模型成为MINLP问题。MINLP模型的解决方案使用GAMS建模环境。四个案例研究可以显示这种非重叠模型的范围。此外，将获得的结果与实际过程分配和文献中的先前报告进行比较。