Novel incineration grate equipment with mixed-rotating and self-rotating combustion airflow

Abstract

The invention discloses an incineration grate equipment with mixed-rotating and self-rotating combustion airflow. The equipment mainly comprises two kinds of grate bars, namely left-rotating grate bars and right-rotating grate bars; the left-rotating grate bars or the right-rotating grate bars are adjacently arranged in the horizontal direction, and the left-rotating grate bars and the right-rotating grate bars are alternately arranged in the longitudinal direction; the two kinds of grate bars mainly comprise a clamping groove, a grate body, a spraying neck and a nozzle respectively, wherein the nozzle consists of a nozzle orifice and a nozzle internal spiral groove, and the spraying neck and the nozzle form a combustion air through hole; the combustion air through hole of each left-rotating grate bar penetrates through the grate bar to an outer wall of the head end of the grate bar from an inner wall of the head end of the grate bar at a right-to-left inclination angle; the thread direction in the nozzle internal spiral groove is clockwise when seen from the nozzle orifice to the spraying neck; and the combustion air through hole position and the thread direction in the nozzle internal spiral groove of each right-rotating grate bar are opposite to those of each left-rotating grate bar. The incineration grate equipment can reduce the clinker ignition loss of domestic garbage, improve the heat value of the garbage and improve the incineration efficiency.

Description

Technical field [0001] The invention relates to technologies such as mechanics, engineering mechanics, fluid mechanics and two-phase flow, and relates to the structure of incinerator grate slabs, in particular to a novel incineration grate equipment with mixed rotating and self-rotating combustion air streams. Background technique [0002] In the past two decades, both internationally and domestically, due to the continuous development and utilization of natural resources and the development of social economy, especially with the high concentration of population and the rapid development of urbanization, the waste of all countries in the world has been faster than their economies. The growth rate is three times the average growth rate. The world's annual waste incineration volume is about 110 million tons, and most waste incineration plants are located in developed countries. There are about 1,900 incineration plants in Japan, with an annual incineration capacity of nearly 40 mi...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of domestic waste in my country: high moisture content, generally 55%-65%, some southern cities as high as 70% in summer, at the same time, the proportion of organic waste such as kitchen waste and catering in domestic waste in my country is large, which is 45%- 55%, so the calorific value of the garbage is low, the combustion is not sufficient, and the heat reduction rate is high

In addition, because the garbage is thick on the existing incineration grate, the turning is insufficient, the mixing is uneven, and the incineration efficiency is low, which leads to the unsatisfactory economic benefits of many waste incineration power plants; , there are many harmful gases in the exhausted flue gas, causing serious pollution

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