Environment-friendly high-energy composite biomass fuel and preparation method thereof

Abstract

The invention discloses an environment-friendly high-energy composite biomass fuel and a preparation method thereof. The environment-friendly high-energy composite biomass fuel contains the ingredients in parts by dry weight: 25-35 parts of agriculture and forestry wastes, 15-25 parts of domestic garbage, 15-25 parts of sludge, 15-25 parts of manure, 15-25 parts of coal powder, 15-25 parts of waste tire rubber particles and 2-10 parts of combustion improver, wherein the combustion improver is prepared from dolomite powder, black shale powder, serpentine powder, urea, potassium nitrate, red mud, calcium peroxide, manganese oxide, strontium peroxide, magnesium peroxide, cerium oxide and boric sludge. The environment-friendly high-energy composite biomass fuel disclosed by the invention is suitable for long-term storage and is free from odor generation. According to the environment-friendly high-energy composite biomass fuel disclosed by the invention, the combustion temperature is high and can reach 1,350-1,400 DEG C, and the combustion efficiency is increased by about 35% compared with that of ordinary biomass fuels; the calorific value can reach 4,900-5,300 kilo-calories per kilogram, and the environment-friendly high-energy composite biomass fuel per ton is equivalent to 0.7 ton of standard coal; combustion exhaust gases all meet relevant national provisions , the desulfurization ratio can reach 98%, and the denitrification ratio can reach 95%.

Description

technical field [0001] The invention relates to a new energy source, in particular to an environment-friendly high-energy composite biomass fuel and a preparation method thereof. Background technique [0002] Agricultural and forestry waste is a large amount of waste generated during the harvesting and processing of agricultural and forestry crops, for example, the straw left in the farmland when the crops are harvested, the rice husks and chaffs left in the agricultural production process, and the branches and leaves left in the forestry production process , wood chips and leftovers from wood processing, etc., as well as residues from the food processing industry. my country is rich in agricultural and forestry waste resources. At present, agricultural and forestry wastes are loosely scattered in a large area. Except for a small part of crop straws used for livestock feed, cooking and heating, most of them are discarded in the fields as waste. There are many utilizatio...

AI Technical Summary

Problems solved by technology

[0008] (1) The main innovation of this invention is the deodorization and sterilization method in step (1), which is more environmentally friendly; however, this treatment method uses the smell of turpentine steam to cover up the peculiar smell for deodorization, and its deodorization effect is not thorough , the obtained product is not easy to store for a long time; secondly, due to the fumigation method, the processing time is too long, the minimum is 24 hours, which greatly restricts the production efficiency; in addition, most of the pine trees in my country are distributed in mountainous areas or artificially planted, and the growth of pine trees is slow. Mountainous areas are generally not allowed to cut down in large quantities, and the collection and transportation of pine bark, pine branches and pine leaves are relatively troublesome. Artificial planting is expensive, and most of them are used as landscape trees.

[0009] (2) The combustion temperature of the composite dense biomass fuel prepared by this invention is difficult to exceed 1000°C, and various kilns in industrial production require the combustion temperature of the fuel to be above 1100°C, which cannot meet the requirements of industrial fuel quality

[0010] (3) The invention only desulfurizes the fuel without denitration treatment, and the nitrogen oxides produced by combustion will cause air pollution; in addition, the invention provides no desulfurization effect due to the desulfurization agent used

Making food waste into biomass fuel can solve the problem of food waste disposal, but it also causes a waste of resources. Food waste is more suitable for making animal feed