Process of preparing high-quality biomass charcoal for carbon-based fertilizer and co-producing wood vinegar

Abstract

The invention relates to the technical field of biomass utilization, and particularly provides a process of preparing high-quality biomass charcoal for carbon-based fertilizer and co-producing wood vinegar. Multi-pore high-quality biomass charcoal and wood vinegar are obtained by adopting a low and medium-temperature cracking mode. Under an anoxic condition, a biomass raw material is carbonized, so that organic carbon in biomass is retained to the maximum extent; the wood vinegar is operated through phase separation of spraying liquid, so that energy waste and flue gas pollution which are caused by combustion are avoided; the low-concentration wood vinegar is further cyclically used as a spraying agent at the same level for recycling, so that effective components in the wood vinegar can beaccumulated. As the obtained wood vinegar is sprayed to the biomass charcoal, the sterilization and parasite expelling effects of the biomass charcoal can be enhanced, and the biomass charcoal is also entitled with nutritional components.

Description

technical field [0001] The invention belongs to the field of biomass utilization, and in particular relates to a process for preparing high-quality biomass charcoal and co-producing wood vinegar for carbon-based fertilizer. Background technique [0002] Due to the quick effect of inorganic fertilizers and the easy control of nutrient components, most of the farmlands use inorganic fertilizers to supplement the nutrients of crops. However, the long-term application of inorganic fertilizers will cause problems such as soil compaction and soil salinization, which is not conducive to the sustainable development of agriculture. Organic fertilizers retain water and moisture, and can also improve soil quality, but are not widely used in my country's agriculture because of their slow effect and high storage and transportation costs. For example, although the stalks of wheat, corn and other crops can be directly returned to the field as organic fertilizers, since it takes a long tim...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of low biochar yield and too large pores for carbon-based fertilizers in the prior art, and then provide a preparation process for high-quality biochars for carbon-based fertilizers, and at the same time maximize Utilize biomass resources to avoid energy waste

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