Staged combustion device and staged combustion method for solid fuel

Abstract

The invention discloses a staged combustion device and a staged combustion method for solid fuel and relates to the combustion device and the combustion method. The device comprises a fuel bin and solid-state combustion part (1), a gaseous combustion part (2), a staged air supply part (3) and groups of fire grate parts (4), wherein the fuel bin and solid-state combustion part (1) comprises a feeding opening (1.1), a newly-added fuel layer (1.2), a drying pyrolytic layer (1.3) and a solid-state combustion layer (1.4); the gaseous combustion part (2) is positioned on one side of the fuel bin and solid-state combustion part (1) and comprises a gas suction shrinking section (2.1), a hybrid cracking section (2.2) and a diffusion section (2.3); the staged air supply part (3) comprises first-stage air supply (3.1) at the bottom as well as second-stage air supply (3.2) and third-stage air supply (3.3) which are connected with the gaseous combustion part (2); supplied air is all subjected to preheating treatment. According to the staged combustion method disclosed by the invention, complete combustion of solid-state components in the solid fuel and gaseous components can be realized, and clean combustion of the solid fuel is really realized.

Description

technical field [0001] The invention relates to a device and a combustion method thereof, in particular to a solid fuel staged combustion device and a staged combustion method thereof. Background technique [0002] Solid fuel combustion emissions are one of the important sources of air pollutants, which directly affect the regional atmospheric environment and the human health of residents. The current typical cases are brown clouds in South Asia and severe haze pollution in my country. According to the latest statistics from the World Health Organization, there are still about 3 billion people in the world who do not have access to clean energy, and still use solid fuels such as coal, straw, and firewood for cooking and heating, most of which are in low- and middle-income countries, causing global 43,000 people died prematurely. [0003] Combustion of solid fuels is significantly different from clean energy use. Its combustion not only includes the combustion of solid comp...

AI Technical Summary

Problems solved by technology

The incomplete combustion of volatiles will directly produce a large amount of harmful substances such as coal tar, polycyclic aromatic hydrocarbons, and carbon black, which will seriously affect the atmospheric environment and human health.

Images