Development of PLC based monitoring and control of pressure in Biogas Power Plant Digester

摘要

this paper presents Programmable Logic Controller (PLC) based control and regulation of various parameters of the digester of a biogas plant for its safety. The work consists of a complete engineering approach through identification of problems, modeling of the system, designing of the control solution, implementation and the discussion of results. This paper also shows a PLC based mechanism to control gas pressure in the digester by the transfer of gas to post digester storage to avoid the unnecessary release of gas into atmosphere, which leads to plant inefficiency and environmental pollution. The model, representing pressure, temperature, humidity and flow control is simulated in FluidSim and Wonderware Intouch software for analysis purpose and the solution is verified using Mirologix400 software and therefor, implemented using Factory Talk View and RsLogix5000 software.