Environmental protection destructive distillation coal gasification laminar burning boiler

Abstract

The invention relates to an environmental-protection coal carbonization-gasification layered fired boiler, comprising water-filling compression component water-cooling system, firepot, burning device, ash hopper, measuring meter and control valve all mounted in a boiler body, the front roaster of the firepot is high and the rear roaster is low, and between them, there are front, middle and rear partition walls partitioning the firepot into carbonization- gasification chamber, main combustion chamber, auxiliary combustion chamber and burnout chamber, the upper part of the front partition wall is provided with nozzle and the bottom plane of the front partition wall nears but does not contact with the coal layer surface on grate of combustion equipment, secondary air duct is arranged above the top wall of the front roaster, a channel communicating the primary and auxiliary combustion chambers is arranged below the middle partition wall, and the auxiliary combustion chamber is connected with the burnout chamber through the auxiliary nozzle. The advantages are simple operation and, low-synthetic cost, high power output and thermal efficiency and can reduce environmental pollution.

Description

technical field [0001] The invention relates to a layer-fired boiler which uses scattered coal as fuel, in particular to a dry distillation coal gasification layer-fired boiler which achieves the dual effects of clean combustion and improved boiler output through coal dry distillation gasification. It is suitable for layer-fired coal-fired steam boilers or hot water boilers with a boiler output below 20t / h (14MW), and can also be used to transform various layer-fired coal-fired boilers and kilns that do not meet environmental protection standards. Background technique [0002] At present, my country's air pollution, especially in the "Three North" region, is mainly caused by boilers and kilns, which is mainly characterized by smoke and sulfur dioxide. Therefore, changing the energy structure and using clean energy such as oil, gas, electricity, and solar energy is the fundamental way to solve and control air pollution. According to the forecast of the World Energy Council, ...

AI Technical Summary

Problems solved by technology

However, although these technologies have improved the environmental protection performance of the boiler, they generally have the disadvantages of large one-time investment and high operating costs of the boiler.

In addition, the briquette boiler also has the defect that the thermal efficiency of the boiler is not high

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