A method of on-line pickling and slag removal device

Abstract

The invention discloses a method for on-line pickling of a slag removal device, which specifically includes the following steps: S101, based on the slag removal device, the slag removal device is temporarily transformed into a self-circulation cleaning system. S102 Pickling the self-circulation cleaning system by stages and time, to establish a circulation system for the cleaning solution. S103 Sampling, testing and monitoring the data information of the cleaning solution in the self-circulating cleaning system, the data information includes the pH value, acid concentration and hardness of the cleaning solution. S104 Neutralize and treat waste liquid and waste residue generated after pickling. This cleaning method uses hydrochloric acid to react with calcium and magnesium-based carbonates, and completely eliminates the scaling in the slag removal pump, overflow water pump, inner wall of each pipeline, overflow pool and storage tank in stages, and improves the cleaning efficiency. The working current of the slag removal pump and overflow water pump is reduced, and the space for passing slag water inside the pipelines, overflow pools and storage tanks is increased, which greatly improves the slag removal efficiency of the slag removal device.

Description

Technical field [0001] The present invention relates to the technical field of power plant boiler cleaning residues, in particular to a method of online pickling slag removal device. Background [0002] The slag removal device of the power plant is a set of auxiliary devices that will produce ash from the boiler for subsequent treatment. Specifically, the ash slag collected at the bottom of the boiler furnace is precipitated, slagged and discharged, and the recovered ash residue is transported to the ash slag for centralized storage. The remaining gray water is precipitated, pressurized, and finally transported to the storage tank for secondary utilization. [0003] Slag removal devices include slag removal pumps, furnace bottom water seals, slag traps, overflow tanks, high efficiency concentrators, pits, sewage pumps and storage tanks, such as Figure 5 As shown, wherein the furnace bottom water seal is located at the bottom of the boiler furnace, to transport the ash produced in...

AI Technical Summary

Problems solved by technology

[0004] During the whole cycle of slag removal, the slag-water mixture is easy to scale in the slag removal pump, overflow water pump, inner wall of each pipeline, overflow pool and inner wall of the storage tank. After sampling and analysis, the main component of the dirt is calcium magnesium. After the slag removal device runs for a long time, the working current of the slag removal pump and the overflow water pump will be reduced, and the work efficiency will be reduced. Small, it will reduce the slag removal efficiency of the slag removal device as a whole

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