Multi-sector self-cleaning anti-corrosion and anti-blocking rotary air preheater

Abstract

The invention discloses a multi-sector self-cleaning anti-corrosion and anti-blocking rotary air preheater comprising a shell, a center rotor installed in the shell and capable of rotating, a smoke sector, a primary air sector, a secondary air sector and a self-cleaning sector. The center rotor is a chamber segmented by multiple partition plates in the circumferential direction. A heat storage element is arranged in the chamber. The smoke sector, the primary air sector, the secondary air sector and the self-cleaning sector are all installed on the shell. Air penetrates a sector of the heat storage element of the center rotor. The self-cleaning sector is arranged between the primary air sector and the secondary air sector. Self-cleaning hot air enters the lower portion of the self-cleaningsector and is discharged from the upper portion. The air preheater is simple in structure, scientific, convenient, high in pertinence and novel in design, the self-cleaning sector is quite scientifically arranged, the self-cleaning hot air is injected, and the problems of corrosion and ash clogging of the air preheater are thoroughly solved.

Description

technical field [0001] The invention relates to a multi-chamber self-cleaning, anti-corrosion, anti-blocking and anti-blocking rotary air preheater. Background technique [0002] The air preheater is a preheater that uses the waste heat of the flue gas in the tail flue of the boiler to heat the air required for fuel combustion to a certain temperature. In modern power plant boilers, it is an indispensable and important component. The air preheater is mainly used to improve the heat exchange performance of the boiler and reduce energy consumption. [0003] In modern power plant boilers, the most commonly used air preheaters are tubular air preheater and rotary air preheater. The tubular air preheater is a heat transfer type, and the rotary air preheater is a heat storage type. Due to the high heat transfer surface density, compact structure, convenient installation and maintenance, low operating cost, and small footprint, the rotary air preheater is now widely used in large ...

AI Technical Summary

Problems solved by technology

Some have adopted a variety of methods, such as adopting enamel heat storage elements, strengthening the management of air preheater steam soot blowing into operation, burning coal with relatively low sulfur content, and restricting the escape of SCR out-of-stock ammonia. Preheater dust blocking problem; this problem is common in the industry. According to the current desulfurization system design, installation, and key parameter monitoring level, it is difficult to achieve its performance design value with general air preheater treatment technology

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