沼气作为可再回用清洁能源,在污染问题日益显现的情况下逐渐被社会重视。因沼气中会含有硫化氢,燃烧之后易生成二氧化硫等有害物质,因此在使用沼气之前须将其中的硫化氩除去。
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.
因为硫化氩具有较强的损害性,对人们身体能造成损害,因此应实现脱硫系统自动化,减少人工操作步骤。沼气脱硫设备自动控制系统,具有实现脱硫自动控制、运行状态显示、风机变频调速、故障监控报警等作用,在增加自动化水平的前提下,保障脱硫效率,保障脱硫系统能够安全稳定的运行,在应用前我们应对该设备作哪些了解呢?接下来我们来探讨一下:
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:
其一,应先了解了沼气脱硫的意义,根据沼气脱硫工艺流程,分析工艺操作过程,给出脱硫控制系统的设计方案。了解沼气脱硫设备的控制系统,包括触摸屏、模拟量输入输出模块、变频器等。
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.
其次,对脱硫控制系统进行了软件设计,究成了S7-200PLC的控制系统梯形图设计受组分浓度大小不同的影响,风机开度也需随之进行调整,从而保障输送的空气能够充分反应掉,增加脱硫液的再回用效率。系统依据实时检测到的组分浓度,利用PID控制器计算出相应的空气进量,并通过变频器对风机进行调整。在设计脱硫液补液、排液以及循环泵启停的时候,不同的操作须对应不同的启停时间。
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.
然后,设计触摸屏监控界面,利用MCGS组态软件完成脱硫控制系统监控界面设计,在组态环境下,建立新工程,构造实时数据库、主控窗口和设备窗口等,实现对系统运行的实时在线监控,对出现的状况进行及时响警声。
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.
末后,在现场对沼气脱硫设备系统硬件进行组装,着重检查可能出现的问题,对控制系统进行调试。
Finally, assemble the system hardware of biogas desulfurization equipment on site, focus on the possible problems, and debug the control system.