Clean and efficient biomass micron fuel high-temperature industrial boiler

Abstract

The invention discloses a clean and efficient biomass micron fuel high-temperature industrial boiler. The boiler comprises a radiation heat exchange furnace, a convective heat exchange unit, an economizer, an air preheater and the like, wherein a heat insulation combustion chamber is arranged in the radiation heat exchange furnace, so that a relatively closed heat storage and combustion space is formed; the top of the combustion chamber is provided with a radiation heat exchange water cooling wall which is used for conducting efficient radiation heat exchange on the combustion chamber; the convective heat exchange unit and the radiation heat exchange furnace are arranged in a split mode; the convective heat exchange unit communicates with the radiation heat exchange furnace through a smoke outlet, and accordingly smoke produced after combustion is used for performing convective heat exchange; the economizer and the air preheater are sequentially arranged on the downstream side of the convective heat exchange unit, the smoke is used for preheating air, and then the heated air is conveyed to the radiation heat exchange furnace. Through the clean and efficient biomass micron fuel high-temperature industrial boiler, the combustion temperature up to 1500 DEG C or more can be obtained; the boiler thermal efficiency can reach 90% or more; the more requirements for heating of industrial steam and thermal oil furnaces are met; and meanwhile, compared with the prior art, a product does not contain tar basically and has no residual carbon and ash content.

Description

technical field [0001] The invention belongs to the field of renewable clean energy equipment, and more specifically relates to a high-temperature industrial boiler with clean and efficient biomass micron fuel. Background technique [0002] There are 650,000 industrial boilers in my country, 85% of which are coal-fired boilers. Industrial boilers are of supportive significance to the national economy, consuming 700 million tons of standard coal each year, accounting for 20% of my country's annual coal output. However, the industrial system using coal as raw material emits a large amount of polluting smoke and dust into the environment every year, accounting for 33% of the total annual smoke and dust emissions in my country; in addition, in terms of raw materials, the shift to natural gas and oil will further accelerate the depletion of resources, Challenge the exploration of new energy sources. [0003] Biomass fuel refers to a new type of clean fuel that directly burns agr...

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