Domestic DCS control system is dominant in power plant emission reduction projects

In China's power supply structure, more than 80% are thermal power, and its basic position is self-evident. With the rise in coal prices, it is no longer the power plants that are forced to cope with national policies, but have become active in reducing losses and increasing profits. Most of the power plants achieve energy saving by changing the operation mode and production process. Because the scheme is simple and effective, the frequency conversion transformation becomes a common method for energy conservation in power plants. In terms of emission reduction measures, desulfurization and denitrification are mainly used to reduce the content of sulfur dioxide and nitrogen oxides in the exhaust gas.

Due to the country's emphasis on energy conservation and emission reduction, especially the provisions on sulfur dioxide and nitrogen oxide emissions, will stimulate the demand for automation products in energy-saving emission reduction control. According to statistics, as of 2011, a total of 2,158 coal-fired desulphurization units were put into operation nationwide with a total installed capacity of 578 million kilowatts.

Thermal power plant desulfurization equipment can be divided into three types of automatic control: First, desulfurization and coal, dust and other peripheral auxiliary equipment control consistent with the use of PLC; Second, the use of a separate set of DCS control desulfurization; Third, with the peripheral auxiliary equipment Share a set of DCS.

Recently, of the more than 210 DCS systems that control desulphurization in the study of the service market and automation demand for nearly 100 ultra-large capacity thermal power plants, Xinhua has the highest share, and the share of foreign brands such as Zhishen, Hollysys and other domestic brands is More than 10%. In short, domestic brands are expected to occupy half of the DCS market for thermal desulfurization.

At present, China's thermal power companies still have about 130 million kilowatts installed capacity of thermal power units do not install desulfurization devices. According to the research, a 600,000-kilowatt turbine desulfurization project has an investment of no less than 100 million yuan, of which about 1% of the automation product investment, namely 1 million yuan. It is initially expected that the demand for automation of existing desulphurization projects for thermal power plants will be approximately 200 million yuan.