CONSISTENT CLEANING METHOD FOR DRUM TYPE BOILER SCALE, AND CLEANING SYSTEM THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a technique for providing consistent cleaning by using a single chemical cleaning solution without cutting a pipe arrangement to be cleaned such as a water-wall pipe, a superheater pipe, or a main steam pipe.;SOLUTION: In the consistent cleaning method for a drum type boiler, a main steam stop valve connection seat is connected as a cleaning solution inlet, a water-wall pipe connection seat and a boiler downcomer connection seat are connected as a cleaning solution outlet, and a heated chelate-based cleaning solution is circulated through the pipe arrangement to be cleaned of the drum type boiler by a temporarily provided cleaning device. The cleaning system is characterized by that it is composed of the temporarily provided cleaning device including a sludge collecting device removing and collecting sludge removed from the pipe arrangement to be cleaned, a circulating pump, a cleaning agent dissolving tank, a cleaning agent dissolving and injecting pump, and a heat exchanger adjusting a temperature of the cleaning solution.;COPYRIGHT: (C)2007,JPO&INPIT