Device and method for optimizing power plant condensate polishing operation control

Abstract

The invention discloses a device and method for optimizing power plant condensate polishing operation control. A bypass adjustment automatic control system is additionally mounted on a condensate polishing equipment bypass, the opening degree of a control valve is automatically adjusted according to water quality measurement results of condensate and condensate polishing effluent and set condensate polishing effluent quality control standards, full-flow polished condensate of a certain ratio is enabled to flow through a bypass system, and the operation burden of condensate polishing equipment can be alleviated. Compared with a conventional full-flow condensate polishing operation control mode, the method and the device are capable of greatly alleviating the operation burden of the condensate polishing equipment, prolonging the operation cycle of condensate polishing, reducing the acid-alkali consumption, the desalting water consumption and the wastewater discharge amount in frequent regeneration of the condensate polishing system, alleviating the operation intensity of operators and improving the water quality of a power plant, and have remarkable effects of energy conservation and consumption reduction.

Description

technical field [0001] The invention relates to a method and a device for optimizing operation control of condensate polishing treatment, in particular to a device and method for optimizing operation control of condensate polishing treatment in a power plant. Background technique [0002] For generating units equipped with condensate polishing devices, in order to ensure that the effluent quality of condensate polishing can meet the GB12145-2008 "Water Vapor Quality of Thermal Power Generating Units and Steam Power Equipment", it is generally required that the condensate be treated at 100% full flow. There are a series of problems in this treatment method: when the condensate polishing treatment mixed bed adopts the hydrogen type operation mode, all the ammonia added to the water vapor system needs to be consumed by the polishing treatment mixed bed, so the operation burden of the polishing treatment system is heavy, the operation period is short, and the mixing Frequent reg...

AI Technical Summary

Problems solved by technology

There are a series of problems in this treatment method: when the condensate polishing treatment mixed bed adopts the hydrogen type operation mode, all the ammonia added to the water vapor system needs to be consumed by the polishing treatment mixed bed, so the operation burden of the polishing treatment system is heavy, the operation period is short, and the mixing Frequent regeneration of bed resin increases acid and alkali consumption, increases waste water production, accelerates resin performance degradation and affects mixed bed effluent water quality, and increases the work intensity of operators

[0003] In fact, when the unit is running normally and stably, and the system is free of foreign impurities, what the condensate polishing system removes is ammonia, which is beneficial to the corrosion protection of the water vapor system, and brings the above-mentioned series of negative effects

At present, power plants do not have a method and device specifically for the optimization of condensate polishing operation control. Therefore, if the water quality monitoring results of each supervisory water sample in the water vapor system of the power plant can be used, the optimal condensate treatment method and treatment flow can be selected, and the The entire set of process is intelligent, and the research and invention of the condensate polishing operation control method and device will greatly reduce the operating burden of the power plant polishing system and achieve considerable energy saving and consumption reduction benefits

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