Steam sootblower for heat exchanger

Abstract

The invention relates to a steam sootblower for a heat exchanger. The steam sootblower comprises a semi-telescopic sootblower body, sootblower supporting structures and a flue top wall surface, wherein the sootblower supporting structures are arranged on the flue top wall surface; a long through notch is formed in the flue top wall surface, the sootblower supporting structures are arranged at the two sides of the notch, and a sealed air cavity is defined by the sootblower supporting structures and the notch; hole-shaped structures are arranged on the inner walls of sootblower supporting frames, located at the two sides of the notch, of the sootblower supporting structures, and sealed air pipe inlet points are arranged in the inner walls of the sootblower supporting frames, located at the two sides of the notch, of the sootblower supporting structures; limiting guide rails are arranged on the upper end faces of the sootblower supporting structures; idler wheels matched with the limiting guide rails are arranged at the bottom of the semi-telescopic sootblower body; a soot blowing pipe of the semi-telescopic sootblower body stretches into the notch in the flue top wall surface. The steam sootblower has the beneficial effects that each steam sootblower is arranged to be movable and is used for blowing soot while moving, and the situation that a plurality of sootblowers are arranged on a single heat exchange surface for achieving the blowing effect is not needed; in addition, it can be better guaranteed that no dead corner exits on the whole heat exchange surface, and blockage of the heat exchange surface caused by soot accumulation is prevented.

Description

technical field [0001] The invention relates to a steam soot blower for a heat exchanger, in particular to a steam soot blower capable of fully covering the entire heat exchange surface of the heat exchanger. Background technique [0002] Many coal-fired power plants are equipped with low-temperature economizers or flue gas heat exchangers to realize waste heat recovery and utilization of flue gas, or to heat boiler feed water for energy-saving purposes, or to raise the exhaust gas temperature of chimneys to solve common problems in coal-fired power plants. The "gypsum rain" problem. Part of the flue gas cooler is arranged in front of the absorption tower. Long-term operation will easily cause dust accumulation on the heat exchange surface, which will affect the heat exchange efficiency. . [0003] In order to reduce the soot accumulation on the heat exchange tubes in the flue gas cooler, several semi-telescopic sootblowers are installed in the low temperature economizer o...

AI Technical Summary

Problems solved by technology

Part of the flue gas cooler is arranged in front of the absorption tower. Long-term operation will easily cause dust accumulation on the heat exchange surface, which will affect the heat exchange efficiency.

[0003] In order to reduce the soot accumulation on the heat exchange tubes in the flue gas cooler, several semi-telescopic sootblowers are installed in the low temperature economizer or the flue gas heat exchanger, but because most of them have dead blowing angles, it is easy to cause the heat exchange surface jam

Installing a rake type soot blower is likely to cause nozzle blockage, and it is difficult to balance the pressure at each nozzle, and the blowing effect cannot be achieved

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