A circulating power plant condenser online chemical cleaning method and system

Abstract

The invention discloses an on-line chemical cleaning system of a circulating condenser in a power station. The system comprises a liquid injecting system and a liquid returning system, and the liquidinjecting system comprises a liquid injecting pump, a liquid injecting electrically operated valve and a liquid injecting head; the liquid injecting pump is located at the bottom of a liquid injectingtank and separately connected with a constant pressure valve and the liquid injecting electrically operated valve through dampers, the constant pressure valve is connected with a recirculating electrically operated valve through a recirculating pipeline, and the recirculating electrically operated valve is connected with the liquid injecting tank; the liquid injecting electrically operated valveis connected with one or more liquid injecting valve sets through a liquid injecting pipeline, each liquid injecting valve is connected with the liquid injecting head, cleaning liquid is injected intoa corresponding heat exchanging pipe through the liquid injecting head, and the cleaning liquid in the heat exchanging pipe flows into the liquid injecting tank through a liquid returning pipeline; aliquid returning system comprises a liquid returning head and a liquid returning electrically operated valve, the liquid returning head is connected with a liquid returning valve, the liquid returning valve is connected with the liquid returning electrically operated valve through a liquid returning pipeline, and the liquid returning electrically operated valve is connected with the liquid injecting tank. The on-line chemical cleaning system of the condenser in the power station has the advantages that the cleaning liquid can be recycled, the automation degree is high, the descaling effect isgood, and zero emission can be achieved.

Description

technical field [0001] The invention belongs to the field of chemical cleaning of industrial heat exchangers, and in particular relates to an online chemical cleaning method and system for a circulating power plant condenser. Background technique [0002] The shell and tube water cooler is one of the main auxiliary equipment widely used in industrial sectors such as power, chemical, petroleum, and atomic energy. It is responsible for the important cooling tasks of various power, electrical, mechanical and chemical reaction equipment. Its working performance is good Damage has an important impact on the safety and economic operation of enterprises. In the process of heat transfer, scale and stains are easily formed on the inner wall of the water side of the heat exchange tube in the tube-and-tube water cooler due to the influence of heating and water quality, which will have a negative impact on the performance of the heat exchanger. How to remove scale and stains in time has...

AI Technical Summary

Problems solved by technology

[0006] The main problem of this cleaning method is: the added chemical cleaning agent is diluted by a large amount of circulating water in the circulating water pool, and it is far from reaching the cleaning concentration when it reaches the heat exchange tube of the condenser, and a large amount of chemical cleaning agent is wasted.

Images