Power Plant Flue Gas Desulfurization Control System

In recent years, the power plant flue gas desulfurization technology and its application in our country has been the relevant government departments, research institutes and enterprises attach great importance. The relevant government departments for scientific research units for further development of desulfurization technology, tracking foreign latest technology development, improve the technology, equipment, operation and effect. Therefore, use foreign technology, and gradually to the digestion absorption, development with independent intellectual property rights of the flue gas desulfurization technology is the only way.Field bus is to connect the intelligent equipment and automation control equipment of the bidirectional serial, digital and node communication network, its key mark is can support two-way many nodes, bus type of digital communication, with the emergence of the field bus technology and mature, make industrial control system is composed of distributed control system (DCS) to the field bus control system (FECS) transition. The fieldbus technology development and research has received worldwide attention and become the focus of the development of automation technology, and are causing automation system structure and the profound changes in the equipment. The international many powerful, influential companies are successively in different degrees on the field bus technology and product development.At present, the distributed control system (DCS system) in power plant desulfurization system has been widely used, because of field bus control technology in power plant flue gas desulfurization control system has not been development application, so the desulfurization electrical and instrument control system control, protection and data transmission is through the hard contact way and the DCS system co., LTD., control and signal exchange, some operation parameters in the DCS system can’t complete reaction. Therefore, despite the desulfurization system individual plant automation level has reached a certain level, but in the control system of the automation level of the overall view, remains to be further improve. And field bus (FECS) can put the desulfurization field each dispersion measurement, control equipment into network node to field bus as a link to their connection.