Method for producing semicoke briquette coal based on dry biomass binder

Abstract

The invention discloses a method for producing a semicoke briquette coal based on a dry biomass binder. The method comprises the following steps: smashing the raw material semicoke into semicoke powders, uniformly mixing the semicoke powders with the starch dry powders by sending into a dry material mixing device, fully mixing the mixture with a NaOH and borax mixed water solution by sending into a mixed kneading device, performing extrusion forming in a forming machine to obtain a briquette coal wet pellet, baking the briquette coal wet pellet till the water content is less than 2%, cooling and packaging to obtain the semicoke briquette coal. By adopting the method for producing the semicoke briquette coal by using the biomass binder prepared by a dry method, the binder components are added in batches, high in accuracy, simultaneously separated and mixed, easy to mix and short in mixed kneading time; in the mixed kneading, forming and drying processes, the inside reaction rims of the binder components and the raw material semicoke are bound, the dewatering is uniform in the drying process, the briquette coal is hard to crack and the whole pellet rate is high.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a method for producing semi-coke briquettes based on a dry process biomass binder. Background technique [0002] With the continuous growth of my country's economy, the consumption of coal is also increasing year by year. However, pollutants such as SOx, NOx, and dust produced during the coal combustion process are particularly serious in air pollution, especially for civil scattered coal. Due to its scattered consumption, it is impossible to carry out centralized purification treatment of the flue gas after combustion. Atmospheric pollution is more serious, so civilian scattered coal burning is the main factor causing today's smog weather. In view of the contradiction between my country's demand for coal and environmental protection, clean coal technology must be adopted for the utilization of coal. [0003] The purification of coal can be divided into thr...

AI Technical Summary

Problems solved by technology

[0009] At present, wet-process biomass binders are often used to make briquettes. The wet-process binder is to prepare the binder with water to form a paste, and then mix the paste with solid raw materials. Due to the poor fluidity of the paste, its quantitative Difficult, poor controllability of proportioning, low wettability of paste, difficult to fully mix with raw material semi-coke, long kneading time, low mixing uniformity, resulting in coal cracking, low ball rate, and finished balls The strength is not high

In addition, the pre-configured wet adhesive has the phenomenon of denaturation and degradation, which will reduce the adhesive force of the adhesive

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