A power plant intelligent chemical water condition control system and method

Abstract

A power plant intelligent chemical water working condition control system and method, the system includes an intelligent chemical water working condition control device integrating expert control logic, oxygenation equipment, dosing equipment, DCS control connected to the intelligent chemical water working condition control device System, fine treatment bypass system connected with DCS control system. The smart chemical water working condition control device continuously collects relevant signals from the DCS control system, judges the most suitable chemical water working condition through the integrated expert system, and transmits the instructions to the oxygenation equipment and chemical dosing equipment to carry out the chemical water working condition At the same time, the smart chemical water working condition control device can instruct the DCS control system to control the switch of the fine treatment bypass system, etc. The intelligent chemical water condition control system can optimize the control effect according to the integrated expert control logic, guarantee the safety of the unit operation, and avoid the harm caused to the unit by the operator who cannot choose the optimal water treatment method according to the water quality of the unit in time.

Description

technical field [0001] The invention relates to the field of intelligent operation of the water vapor system of a power plant, in particular to a control system and method for intelligent chemical water working conditions of a power plant. Background technique [0002] At present, the chemical operation control of the power plant mainly relies on the operating experience of the operating personnel and the control indicators stipulated in relevant standards. However, due to the technical level of the operating personnel and the lag of monitoring, the operating personnel are usually unable to select the optimal one according to the water quality of the unit in time. Feedwater treatment methods. At the same time, national and industry standards have broad regulations on various chemical operation control indicators (such as feedwater pH 9.2-9.6, feedwater dissolved oxygen 10-150μg / L), and there is great room for optimization of operation control effects. [0003] If the water v...

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Problems solved by technology

[0002] At present, the chemical operation control of the power plant mainly relies on the operating experience of the operating personnel and the control indicators stipulated in relevant standards. However, due to the technical level of the operating personnel and the lag of monitoring, the operating personnel are usually unable to select the optimal one according to the water quality of the unit in time. Feed water treatment method, at the same time, national and industry standards have broad regulations on various chemical operation control indicators (such as feed water pH is 9.2~9.6, feed water dissolved oxygen is 10~150μg / L), and there is a great room for optimization of operation control effect

[0003] If the water vapor control index cannot be adjusted in time according to the change of water quality for a long time, it will lead to a high rate of corrosion, scaling and salt accumulation in the thermal system, which will affect the safety and economy of unit operation. Improving the chemical automatic operation level of power plants is of great significance to improving the reliability and economy of unit operation

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