Many chemical processes require complex piping configurations to achieve a variety of objectives such as splitting a stream into multiple parallel streams, blending several streams, bypassing units and interconnecting process units. The plumbing required for effective fluid-mechanics performance and the control structure required for effective dynamic control differ from case to case. Liquid streams need to be handled in a different manner than vapor streams because their incompressibility prohibits having two control valves in series. This paper presents several important examples of process piping configurations and practical control structures for achieving good performance.

许多化学过程需要复杂的管道配置以实现各种目标，例如将流分成多个并行流，混合多个流，旁路单元和互连过程单元。有效的流体力学性能所需的管道和有效的动态控制所需的控制结构因情况而异。液体流需要以与蒸气流不同的方式处理，因为它们的不可压缩性阻止了两个串联的控制阀。本文介绍了几个重要的示例过程管道配置和实用的控制结构，以实现良好的性能。