Biomass carbon and preparation method and application thereof

Abstract

The invention discloses biomass carbon and a preparation method and application thereof. The preparation method comprises the following steps that (1) biomass raw materials are preliminarily carbonized, so that preliminarily carbonized biomass is obtained; and (2) the preliminarily carbonized biomass obtained in the step (1) is deep carbonized, so that the biomass carbon is obtained. Preliminary carbonization treatment in step (1) is preliminary pyrolysis, and the temperature of preliminary pyrolysis is 100-300 DEG C; and deep carbonization treatment in the step (2) is deep pyrolysis, and thetemperature of deep pyrolysis is 350-600 DEG C. The technological process is clear in structure, techniques are mature and operable, the characteristics of small investment, quick effect and high output are achieved, the obtained biomass carbon can effectively improve physical and chemical properties of soil, maintain water, retain nutrients in the soil and promote growth of beneficial microorganisms in the soil, the crop yield and quality improvement are comprehensively promoted, and the plant economy income of farmers is increased.

Description

technical field [0001] The invention belongs to the technical field of biomass application, and relates to a method for producing biomass charcoal, in particular to a biomass charcoal and its preparation method and use. Background technique [0002] China is a big country in the development of agricultural planting economy. According to relevant data, my country's cultivated land area is about 1.8 billion mu, and the planting area shows an orderly increasing trend. Moreover, with the country's high emphasis on "agriculture, rural areas and farmers" and the continuous increase of the population, a series of industries such as planting and processing have been extended, resulting in a large amount of agricultural and forestry straw waste, which is directly discharged into the ecosystem without systematic treatment. It has caused waste of resources and pollution of the environment, exceeding the self-purification ability of the ecosystem, bringing negative impacts on the soil, ...

AI Technical Summary

Problems solved by technology

The utility model is suitable for use in areas with a large amount of crop stalks and forestry waste. It converts biomass energy with low energy density and cannot be directly burned into fixed carbon with high calorific value, which can be used as fuel and other aspects. The technical solution can only convert straw into carbon powder, and the biomass tar contained in the straw is consumed in the conversion process, and the economic benefit is low

[0008] CN 2793078 Y discloses a straw thermal cracking device, which includes a loading hopper car, a feeding track, a feeding port, a drying box, a pyrolysis furnace, a charcoal outlet, a condensing gravity outlet, an electric tar catcher, a filter However, the pyrolysis process is aerobic pyrolysis, and the degradation of straw is relatively serious, which cannot provide more beneficial components for soil improvement.

[0009] CN 201525825 U discloses a biomass processing device, which solves the shortcomings of the biomass processing device, such as weak comprehensive processing capacity, strong raw material adaptability and poor economy, but the biomass charcoal carbon content obtained by the method is low, and the soil quality is improved. poor effect

Images