Coal slime and biomass compounded briquette coal and preparation method thereof

Abstract

The invention relates to coal slime and biomass compounded briquette coal. A preparation method of the coal slime and biomass compounded briquette coal comprises the steps of weighing biomass finely particles with the particle size smaller than or equal to 20 millimeters; weighing 100 parts (dry basis) by mass of the coal slime and 10-50 parts (dry basis) by mass of the biomass finely particles to obtain briquette coal raw materials; mixing the briquette coal raw materials uniformly to obtain a mixed briquette coal raw material; pressing the mixed briquette coal raw material into briquette coal products with a certain mechanical strength and shape by using a shaping machine. The compounded briquette coal raw materials also can comprise a proper amount of a combustion-supporting coal-saving agent. Products provided by the invention comprise the coal slime and the biomass. Compared with briquette coal completely prepared by powdered coal, the coal slime and biomass compounded briquette coal provided by the invention can reduce usage amount of non-renewable energy sources and efficiently utilize renewable energy sources. The coal slime and the biomass finely particles are mixed uniformly and pressed into the briquette coal, and when the briquette coal is combusted, the biomass in the briquette coal body is firstly gasified and combusted to generate microporous structures in the briquette coal body, thereby facilitating combustion of the coal slime in the briquette coal body.

Description

technical field [0001] The invention relates to a molded coal and a preparation method thereof, in particular to a composition of molded coal. Background technique [0002] Coal is a fossil fuel with high carbon content, low volatile matter, and high calorific value. It is one of the energy sources with large consumption in the national economy. Coal is a non-renewable energy source, and its resources will gradually be exhausted with the use of coal. When coal is burned, it will have a huge adverse impact on our ecological environment. Especially in the new century, the greenhouse effect is becoming increasingly severe, extreme weather emerges in endlessly, and environmental pollution continues to intensify. In this context, it is urgent to develop environmentally friendly coal utilization methods. [0003] Briquette is a kind of briquette product with a certain mechanical strength and shape, which takes pulverized coal as the main raw material and mixes it according to t...

AI Technical Summary

Problems solved by technology

When the coal slime is stored, its shape is extremely unstable, it will be lost when it meets water, and it will fly when it is air-dried. A trickier problem for coal plants

[0007] In the prior art, there is no combination of coal slime and biomass to make composite briquettes of coal slime and biomass and its production method