As a renewable and clean energy, biogas has been paid more and more attention by the society under the condition of increasing pollution problems. Because the biogas contains hydrogen sulfide, it is easy to generate harmful substances such as sulfur dioxide after combustion, so the argon sulfide must be removed before using the biogas.
Because argon sulfide has strong damage and can cause damage to people's body, the automation of desulfurization system should be realized and manual operation steps should be reduced. The automatic control system of biogas desulfurization equipment can realize automatic desulfurization control, operation status display, fan frequency conversion speed regulation, fault monitoring and alarm. On the premise of increasing the automation level, it can ensure the desulfurization efficiency and ensure the safe and stable operation of the desulfurization system. What should we know about the equipment before application? Next, let's discuss:
First, we should first understand the significance of biogas desulfurization, analyze the process operation process according to the biogas desulfurization process, and give the design scheme of desulfurization control system. Understand the control system of biogas desulfurization equipment, including touch screen, analog input and output module, frequency converter, etc.
Secondly, the software of the desulfurization control system is designed, and the control system ladder diagram of S7-200 PLC is studied. Due to the influence of different component concentrations, the fan opening also needs to be adjusted, so as to ensure that the transmitted air can fully react and increase the reuse efficiency of desulfurization liquid. According to the component concentration detected in real time, the system uses PID controller to calculate the corresponding air inlet, and adjusts the fan through frequency converter. During the design of desulfurizing liquid replenishment, liquid discharge and the start and stop of circulating pump, different operations must correspond to different start and stop times.
Then, the touch screen monitoring interface is designed, and the MCGS configuration software is used to complete the monitoring interface design of the desulfurization control system. Under the configuration environment, a new project is established, and the real-time database, main control window and equipment window are constructed to realize the real-time online monitoring of the system operation and give a timely alarm to the existing conditions.
企業(yè)二維碼
2021-08-04
魯公網(wǎng)安備37011202000764號號