Pig manure fuel and preparation method thereof

Abstract

The invention discloses a pig manure fuel and a preparation method thereof. The preparation method comprises the steps of: adding pig manure or pig manure after solid-liquid separation to 5-50% of coal or crushed straw, adding a certain ratio of combustion improver, uniformly mixing, pressing to form blocks with hollow holes, and drying to obtain the fuel. The pig manure fuel and the preparation method have the advantages that the operation is simple; the pig manure has no obvious odor after being processed and can be stored for a long time; the pig manure fuel is sufficient in combustion, is high in combustion speed and does not generate harmful and toxic gases during combustion; the environmental pollution caused by pig manure in large-scale pig farms can be eliminated; the heat generated during combustion can be used for heating pig houses, thus a great amount of energy is saved; and after combustion, the residues which are rich in potassium, phosphorus and trace elements can be applied to farmland fertilization.

Description

Technical field [0001] The invention relates to a fuel and its processing and manufacturing method, in particular to a biomass fuel and its processing and manufacturing method. Background technique [0002] The manure of the current large-scale pig farms has caused great damage to the environment. While polluting the environment, the pig manure can easily breed mosquitoes in the process of accumulation, causing the air inside and around the pig farm to smell bad, and there are many mosquitoes. This accelerates the spread of the disease. At present, most of the treatment methods of pig farm manure are by anaerobic fermentation to produce biogas. Although this method can better solve the problem of pig manure pollution and can use the energy in pig manure, its shortcomings are mainly manifested In the following aspects: 1) The cost of biogas digesters is expensive, and ordinary pig farms simply cannot afford it; 2) During the fermentation process of pig manure, only less than half...

AI Technical Summary

Problems solved by technology

[0002] At present, the feces of large-scale pig farms cause great damage to the environment. While polluting the environment, pig manure is easy to breed a large number of mosquitoes during the accumulation process, resulting in foul-smelling air in and around the pig farm, and there are many mosquitoes. This accelerates the spread of the disease

At present, most of the treatment methods for pig manure are to use anaerobic fermentation to generate biogas. Although this method can better solve the problem of pig manure pollution and can use the energy in pig manure, its shortcomings are mainly manifested in the following aspects: In the following aspects: 1) The cost of biogas digesters is expensive, and ordinary pig farms cannot afford it at all; 2) During the fermentation process of pig manure, only less than half of the energy is converted into biogas and used, and most of the energy is used in the fermentation process. Natural loss in heat production; 3) Strict requirements for pig manure fermentation conditions, such as temperature, bacterial strain, pH value and other parameters, the fermentation process is very easy to fail; 4) Improper treatment of biogas slurry after fermentation still causes great pollution to the environment ;5) The biogas fermentation process is long, and it takes 1-3 months for pig manure to be fully fermented