Method for preparing solid forming fuel with pig manure as raw material

Abstract

The invention discloses a method for preparing solid forming fuel with pig manure as raw material. The method comprises the steps as follows: firstly, drying the pig manure to enable the moisture content of the pig manure to be reduced to 10%-25%, then crushing the pig manure and adding the additive capable of desulfuration, deodorization and mold prevention via 2%-5% dry basis quality of the pig manure so as to form the dried pig manure raw material; uniformly mixing and stirring 20%-100% of the dried pig manure raw material, 0%-80% of biomass and 0%-20% of coal by dry weight to obtain the raw material mixture, and then utilizing forming machine to perform hot-pressing formation, so as to obtain the solid forming fuel. The method has the characteristics of simplicity, convenience, feasibility, energy conservation and environmental protection, high treatment efficiency, low production cost, and high convenience for large-scale industrialized production, and the solid forming fuel has no odor, is not easy to mildew, is convenient in transportation and storage and high in combustion efficiency and has fewer secondary pollutant emissions. Therefore, harmless treatment and resource utilization of the pig manure are realized, and the problem about treatment and disposal of the excessive pig manure can be effectively solved.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, and in particular relates to a method for preparing solid briquette fuel by using pig manure as a main raw material. Background technique [0002] In 2000, my country's pig manure production was 1.54 billion tons, equivalent to 1.6 times the industrial solid waste production (950 million tons) in the same period, and the pig manure production increased by 1-2 times every 10 years. The huge production of pig manure makes the amount of pig manure far exceed the reasonable usage and the processing capacity of the surrounding environment. Moreover, the traditional methods of processing pig manure, such as composting and fermentation capacity, are difficult to realize the harmless treatment and resource utilization of pig manure. [0003] In recent years, domestic and foreign literature and patents also have reports on the technology of preparing fuel from pig manure. Most technologies adopt the...

AI Technical Summary

Problems solved by technology

Most technologies adopt the method of pressing first and then drying to produce solid fuel, but it is easy to crack during the drying process, reducing its strength, and it is also easy to break during transportation

The fuel produced by most of the technologies has not undergone desulfurization, deodorization and anti-mildew process, so the fuel is prone to odor and mildew, and even causes serious secondary pollution when used, making it difficult to use and store

In addition, some researchers add binders in the raw material preparation process, which increases production costs and is not conducive to large-scale industrial production.