The Computer Controlled Biogas Processing Plant, “PBGC”, is supplied with two reactors made of stainless steel with level sensors and stirring systems. In this way, the user can work either in only one stage or in two stages, separating the different phases of the digestion process (the processes of hydrolysis, acidogenesis and acetogenesis would take place in the first digester, and the methanogenesis in the second digester) and optimizing the conditions of each reactor separately.
This Computer Controlled Unit is supplied with the EDIBON Computer Control System (SCADA), and includes: The unit itself + a Control Interface Box + a Data Acquisition Board + Computer Control, Data Acquisition and Data Management Software Packages, for controlling the process and all parameters involved in the process.
SPECIFICATION
PBGC. Unit:
- Three computer controlled pumps to impel the substrate. Maximum flow rate: 25 l/h.
- Two reactors made of stainless steel. Capacity: between 20 l – 70 l. Each reactor includes:
- Digestate collection tank made of stainless steel. Capacity: 25
- PH adjustment system
- Heating system
- Silica gel column for biogas drying.
- Valves to select the circuits
- Sampling point with valve for external sampling of generated biogas.
- Biogas analysis section:
- Computer and touch screen control: PLC controller to control the unit locally.
PBGC/CIB. Control Interface Box:
- The Control Interface Box is part of the SCADA system.
- Control interface box with process diagram in the front panel.
- The unit control elements are permanently computer controlled.
- Simultaneous visualization in the computer of all parameters involved in the process.
- Calibration of all sensors involved in the process.
- Real time curves representation about system responses.
- All the actuators’ values can be changed at any time from the keyboard allowing the analysis about curves and responses of the whole process.
- Shield and filtered signals to avoid external interferences.
- Real time PID control with flexibility of modifications from the computer keyboard of the PID parameters, at any moment during the process.
- Real time PID control for parameters involved in the process simultaneously.
- Proportional control, integral control and derivative control, based on the real PID mathematical formula, by changing the values, at any time, of the three control constants (proportional, integral and derivative constants).
- Open control allowing modifications, at any moment and in real time, of parameters involved in the process simultaneously. Three safety levels, one mechanical in the unit, another electronic in the control interface and the third one in the control software.
