Dust removing method for tube-type heat exchanger and dust removing device for tube-type heat exchanger

Abstract

The invention discloses a dust removing method for a tube-type heat exchanger and a dust removing device thereof. The dust removing device comprises a cutter frame, dust removing cutters, first sliding wheels and guiding rails. The dust removing cutters are installed on the cutter frame and can scrape dust on heat exchange tubes. The arranging direction of the dust removing cutters is perpendicular to the axial direction of the heat exchange tubes, and the width of each dust removing cutter is smaller than the distance between the two adjacent rows of the heat exchange tubes, so it is ensured that the dust removing cutters can move back and forth between the two adjacent rows of the heat exchange tubes. In the specific using process, the cutter frame is pushed to slide in the guiding rails through the first sliding wheels, and the dust on the heat exchange tubes is scraped through the dust removing cutters along with the motion of the cutter frame, so that the dust on the heat exchange tubes is removed in a large area, the thickness of the dust covering the heat exchange tubes is reduced, and the heat exchanging efficiency of the heat exchange tubes is ensured.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for cleaning a tube heat exchanger and a device for cleaning a tube heat exchanger. Background technique [0002] The tubular heat exchanger uses the wall of the tube bundle enclosed in the shell as the heat transfer surface of the partition wall heat exchanger. During the heat exchange process of the high-temperature exhaust gas, the exhaust gas often carries a certain amount of dust. And some compounds that exist in gaseous form. During the cooling process of exhaust gas, chemical reactions occur between the compounds in gaseous form in exhaust gas to form liquid compounds with strong adhesion or solid compounds with strong adhesion. Or the gaseous compounds in the exhaust gas are directly condensed to form liquid compounds with strong adhesion or solid compounds with strong adhesion. During the process of gas circulation, the liquid compounds or solid compounds wit...

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Problems solved by technology

[0002] The tubular heat exchanger uses the wall of the tube bundle enclosed in the shell as the heat transfer surface of the partition wall heat exchanger. During the heat exchange process of the high-temperature exhaust gas, the exhaust gas often carries a certain amount of dust. And some compounds that exist in gaseous form. During the cooling process of exhaust gas, chemical reactions occur between the compounds in gaseous form in exhaust gas to form liquid compounds with strong adhesion or solid compounds with strong adhesion. Or the gaseous compounds in the exhaust gas are directly condensed to form liquid compounds with strong adhesion or solid compounds with strong adhesion. During the process of gas circulation, the liquid compounds or solid compounds with strong adhesion will Carrying dust and adsorbing on the wall of the tube heat exchanger together, causing the heat exchange efficiency of the tube heat exchanger to decrease, and in serious cases, it needs to be shut down for cleaning

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