Fluidized-bed gasifier fly ash granules and production method thereof

Abstract

The invention discloses fluidized-bed gasifier fly ash granules. The fluidized-bed gasifier fly ash granules are prepared by mixing 50-60% of fluidized-bed gasifier charged raw material pulverized coal, 40-50% of fluidized-bed gasified fly ash and 8-10% of binder in percentage by weight together, wherein the binder is formed by mixing 10-20% of cement and 80-90% of sodium silicate in percentage by weight together; the production method of the fluidized-bed gasifier fly ash granules comprises the following steps: (1) blending the fluidized-bed gasifier charged raw material pulverized coal and the fluidized-bed gasified fly ash evenly; (2) adding the binder, adding an appropriate amount of water and stirring to obtain a mixture; (3) performing cold rolling on the mixture into coal granules having a diameter in the range of 5-10mm; (4) naturally air-drying or drying the coal granules before being applied to combustion in a fluidized-bed boiler. The fluidized-bed gasified fly ash which cannot be utilized reasonably in the prior art is pelleted and applied to combustion in the fluidized-bed boiler, and therefore, the coal resources can be utilized sufficiently, the cost of an enterprise is reduced and the maximum resource utilization is realized, and meanwhile, the fly ash-induced pollution on the environment can be reduced and the goals of high energy efficiency, low energy consumption and low emission of the enterprise are realized.

Description

Technical field: [0001] The invention relates to a fluidized bed gasification furnace fly ash granule, in particular to a production and processing method of the fluidized bed gasification furnace fly ash granule, and belongs to the technical field of industrial briquette processing. Background technique: [0002] Coal is an important basic energy source in my country. The basic characteristics of my country's energy resources are rich in coal, poor in oil, and low in gas. Comparing my country's coal resources with primary energy resources such as oil, natural gas, hydropower, and nuclear energy, the proven resource reserves are converted into standard coal, and coal accounts for 85%. above. In recent years, with the continuous advancement of my country's industrialization and urbanization, the total coal consumption has been increasing year by year, but the utilization efficiency of coal resources is far behind that of some major coal-producing countries in the world. Gene...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a fluidized bed gasification furnace fly ash granule and its processing method, to solve the problem that the fluidized bed gasification fly ash is difficult to use, and to provide a wide range of fluidized bed gasification furnace Promote and provide technical support