Method for preparing briquette binder and coproduced biomass briquette by utilizing kitchen garbage fermenting products

Abstract

The invention discloses a method for preparing briquette binder and coproduced biomass briquette by utilizing kitchen garbage fermenting products. The method disclosed by the invention comprises the following steps of: removing water in kitchen garbage through an aerobic fermentation process, so that the water ratio of the kitchen garbage is reduced, and a large amount of humic acid is generated; after crushing processing, adding alkali liquor, performing cooking and low-temperature baking so as to obtain biomass briquette binder; and finally adding bitumite powder and a sulphur-fixing agent to the prepared biomass briquette binder, uniformly mixing the bitumite powder, the sulphur-fixing agent and the prepared biomass briquette binder with water, extruding and forming the bitumite powder, the sulphur-fixing agent, the prepared biomass briquette binder and the water by a forming machine, and performing baking so as to obtain the biomass briquette. The method disclosed by the invention is used for developing novel biomass briquette binder on the basis of properly treating the kitchen garbage by utilizing the characteristics of high calorific value, higher content of humic acid and the like, and then rich powdered coal resources and rich coal gangue resources are utilized to develop biomass briquette with a low cost and a high sulfur-fixing ratio. According to the method disclosed by the invention, comprehensive utilization of solid waste such as the kitchen garbage and the powdered coal is realized, the production cost of the biomass briquette is reduced, the added values of the kitchen garbage and the powdered coal are increased, and the use ratio of coal gangue is increased.

Description

technical field [0001] The invention relates to a method for preparing briquette binder and co-product briquette by using the fermentation product of kitchen waste, which belongs to the field of clean and effective utilization of coal and kitchen waste. Background technique [0002] With the rapid development of China's economy, the energy gap has gradually expanded. my country's energy consumption has accounted for 1 / 5 of the global total, surpassing the United States to become the world's largest energy consumer. However, my country's "short of oil, less gas, rich in coal" energy The structure and the relatively low level of industrial equipment determine the dominant position of coal in my country's energy consumption structure. At present, my country's dependence on coal resources has led to serious environmental pollution problems, and the direct combustion of coal produces a large amount of SO 2 and CO 2 emissions, which rank first and second in the world respectively...

AI Technical Summary

Problems solved by technology

In addition, with the improvement of the degree of mechanization of raw coal mining, the proportion of pulverized coal is increasing year by year. Pulverized coal accounts for more than 80% of the total raw coal output, while the yield of lump coal is less than 20%. This leads to tight supply of lump coal and massive accumulation of pulverized coal. surroundings

As mentioned above, the existing published patents on biomass briquettes all add commonly used binders, such as bentonite, sodium humate, etc., although the waterproof and compressive properties of the briquettes have been improved to a certain extent, the production cost Greatly improve