LOGIC DIAGRAM PROCESS
Logic Diagram - an overview | ScienceDirect Topics
A simplified SCR process control logic diagram is shown in Figure 10-19. The NH 3 injection requirements of an SCR process are controlled based on the NO x concentration at the inlet of the SCR. Measurement of the NO x concentration at the SCR inlet combined with the flue gas flow yields the NO x
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CONTROL LOGIC DIAGRAMS GUIDANCE (PROGRAMMATIC AND
PDF fileon the control logic diagram. 15. Similar equipment and functions should be controlled and presented in a consistent manner. 16. A reference should be given for any related Process and Instrument Diagram, Schematic Drawing, or Vendor Logic Diagram. 17. The control logic diagrams can be more or less detailed depending on its intended use.
1 Binary Logic Diagrams* - Kishore Karuppaswamy
PDF fileprocess. The diagram is a combination of logic and instru-mentation symbols that reﬂects the overall control strategy. It also includes the details for the successful operation of the speciﬁed process equipment. For the example under consid-eration, the binary logic diagram indicates the operation requirements for the auxiliary vacuum pump.