Waste composite high-heat biomass fuel and ultrasonic microwave assisted preparation method thereof

Abstract

The invention provides a waste composite high-heat biomass fuel and an ultrasonic microwave assisted preparation method thereof. The waste composite high-heat biomass fuel is prepared from the following components in parts by dry weight: 25-35 parts of forestry and agricultural residues, 15-25 parts of household waste, 15-25 parts of sludge, 15-25 parts of excrement, 15-25 parts of pulverized coal, 15-25 parts of waste tire rubber particles and 2-10 parts of combustion improver; the combustion improver is composed of dolomite powder, black shale powder, serpentine powder, urea, potassium perchlorate, red mud, calcium peroxide, manganese oxide, strontium peroxide, zinc oxide, cerium oxide, boric sludge and ferrocene. The waste composite high-heat biomass fuel is suitable for long-time storage without peculiar smell. The waste composite high-heat biomass fuel is high in combustion temperature which can be within the range of 1450-1500 DEG C, and compared with a common biomass fuel, the combustion efficiency is improved by about 40%; the heat value of the waste composite high-heat biomass fuel can be within the range of 5200-5600 kilocalories/kilometer, and each ton of the waste composite high-heat biomass fuel is equivalent to 0.77 ton of standard coal; the combustion tail gas conforms to the national relevant regulations, the sulfur removal rate can be 98% and the nitrate removal rate can be 95%.

Description

technical field [0001] The invention relates to a new energy source, in particular to a waste composite high-heat biomass fuel and an ultrasonic and microwave-assisted 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 ar...

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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

[0012] (5) The composite dense biomass fuel prepared by this invention has a dense structure and is not suitable for rapid combustion

[0014] (7) The nutrient content of the combustion waste residue of the composite dense biomass fuel prepared by the invention is low, and the value of making fertilizer is not high