Waste incineration boiler

Abstract

The invention provides a waste incineration boiler, which ensures that a conventional waste incineration boiler is less in dust stratification, convenient in soot cleaning and difficult in leakage, and the operation and maintenance costs of the boiler are reduced. The waste incineration boiler comprises a furnace chamber, a furnace grate and a horizontal flue, wherein the furnace chamber is positioned above the furnace grate; a boiler barrel is arranged above the furnace chamber; a front-back arch is arranged on the lower part of the furnace chamber; secondary air is arranged on the front-back arch, and faces the furnace grate; and an air preheater, an overheater and an evaporator are arranged in the horizontal flue. The waste incineration boiler is characterized in that: the furnace chamber is connected with a vertical burn-out chamber, three vertical flues, the horizontal flue and a tail part vertical flue in turn; a coal economizer is arranged in the tail part vertical flue; a rapping apparatus is arranged on a pipeline of the air preheater, the overheater and the evaporator which are arranged in the horizontal flue; and a shockwave or steam sootblower is arranged in the tail part vertical flue.

Description

technical field [0001] The invention relates to the technical field of waste incineration equipment, in particular to a waste incineration boiler. Background technique [0002] Domestic waste generally has the characteristics of low calorific value, high water content, and high ash content. To fully burn the waste and effectively suppress the generation of harmful substances such as dioxins, it is necessary to arrange the various parts of the boiler scientifically and rationally. [0003] At present, in the field of incineration, the most widely used in China is the mechanical grate incinerator, and the basic structural forms include vertical arrangement and horizontal arrangement. For vertically arranged boilers, the tubes on the convective heating surface are arranged horizontally, which is very easy to accumulate dust. Even if shock waves, steam or sound waves are used to clean the ash, the continuous running time is short; for horizontally arranged boilers, the tubes...

AI Technical Summary

Problems solved by technology

For vertically arranged boilers, the tubes on the convective heating surface are arranged horizontally, which is very easy to accumulate dust. Even if shock waves, steam or sound waves are used to clean the ash, the continuous running time is short; for horizontally arranged boilers, the tubes on the convective heating surface are vertical. Layout, the degree of dust accumulation is slightly lighter, generally adopts vibration to clean the dust, and the continuous operation time is slightly longer, but the economizer part is prone to leakage due to the action of the vibration hammer, and the operation and maintenance costs are relatively high

Images