Gas-liquid-solid fuel hybrid combustion furnace

Abstract

The invention provides a gas-liquid-solid fuel hybrid combustion furnace, and relates to the technical field of combustion furnaces. The furnace device mainly comprises a front shaft assembly, a chain fire grate, a feed hopper, a hot air outlet, a refractory furnace wall, an ash collecting hopper, an oil or gas fired combustor, a solid fuel combustion hearth, an oil or gas fired combustion hearth and a special refractory material combustion cover, wherein the feed hopper and the chain fire grate form a solid fuel supply device; the special refractory material combustion cover and the chain fire grate form a solid fuel combustion chamber in an enclosing manner; a primary air supply outlet is positioned below the chain fire grate, and is used for supplying air required by solid fuel combustion; the oil or gas fired combustor, a furnace top and the special refractory material combustion cover form an oil or gas fired combustion chamber; the two combustion chambers are isolated through the special refractory material combustion cover. Under the action of the refractory material combustion cover, full heat exchange is performed, so that the temperature fields in the combustion chambers are kept stable, the generation of pollutants is reduced, the combustion efficiency is increased, and the heat efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of combustion furnaces, in particular to a gas, liquid and solid fuel mixed combustion furnace. Background technique [0002] Most of the combustion furnaces in the prior art use a certain fuel, most of which use coal, biomass fuel or garbage fuel. The chain furnace in the existing combustion furnace usually includes a furnace, a front arch, a rear arch, and a chain grate. The function of the rear arch at the rear of the furnace is to push the excess air in the upper part of the burnout zone to the front to achieve the same The excess volatiles in the upper part of the fire area are mixed to promote combustion; at the same time, the high-temperature flue gas in the combustion area is pushed to the front arch area to increase the temperature of the front arch area. The combustion efficiency of this kind of chain furnace is generally relatively low. The reasons for this low efficiency are: (1) the large exces...

AI Technical Summary

Problems solved by technology

Due to the poor ignition characteristics of the chain furnace, it is often necessary to manually poke the fire

Removing the ash on the fuel layer brings great inconvenience to actual production

During the combustion process of the chain furnace, the temperature field is unevenly distributed, and there are obvious high-temperature areas and low-temperature areas. The distribution of this temperature field will cause a large amount of NOx pollutants to be generated, which cannot meet the emission requirements of the environmental protection standards for air pollutants.

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