In this chapter, when determining t

In this chapter, when determining the control scheme, a set of pipeline instrument flow chart is designed, and then each control scheme is determined, and two points are paid attention to at the same time. The first is whether the design has passed the practical test in the production site to verify the effectiveness of the adjustment object and the adjustment system. We should fully understand the requirements and process of the site, absorb the mature experience of the site, and apply it to the design. The control object must master the process skillfully, master the parameters and characteristics of the target, analyze all kinds of interference, select the appropriate equipment, measuring elements, measuring position, control scheme and actuator to form the control system. Under the background of sulfur dioxide gas production, three simple control systems and a complex control system are set up, the flow pressure and temperature are controlled by the control system, a measuring point is set up, and the whole process is monitored in an all-round way.