Biomass fertilizer preparation method and system therefor

Abstract

The invention relates to a biomass fertilizer preparation method. The biomass fertilizer preparation method specifically comprises the following steps of a), performing pyrolysis on biomass to obtain a combustible gas and active carbon, and collecting the active carbon to a carbon storage cabin; b), conveying the combustible gas to a spray tower, a scrubber tower and a condensing tower in sequence, removing impurities, and cooling to 25-30 DEG C, and circulating a condensed solution to an impounding reservoir; c), conveying into a decoking and dust-removing tower to further remove impurities, and collecting into a fuel gas storage tank; d), performing standing and layering on the liquid in the impounding reservoir, taking out pyroligneous liquor and tar separately, and continuing to perform standing and disposition on raw pyroligneous liquor in a storage tank for three months; e), grinding the active carbon in the carbon storage cabin into 120 meshes, taking the upper layer of the raw pyroligneous liquor, and neutralizing into a carbon fertilizer raw material with pH of 7; and f), enabling the carbon fertilizer raw material to be mixed with biological bacterium and an organic fertilizer in a sample preparation unit, performing pelleting and drying and cooling to prepare the finished biological active carbon fertilizer. The biomass fertilizer preparation method has the beneficial effects as follows: gas-solid separation in a gasification process is effectively realized; active carbon and waste liquid are collected for preparing the biomass fertilizer; and meanwhile, the waste gas can be used for generating electricity.

Description

technical field [0001] The invention relates to the technical field of clean energy, in particular to a method for preparing biomass fertilizer and a system thereof. Background technique [0002] Biomass mainly refers to lignocellulose (lignin for short) such as straw and trees other than grain and fruit in the process of agricultural and forestry production, leftovers of agricultural product processing, agricultural and forestry waste, and poultry manure and waste in the process of animal husbandry. matter etc. [0003] Biomass energy has always been an important energy source for human survival. It ranks fourth in the world's total energy consumption after coal, oil and natural gas, and occupies an important position in the entire energy system. my country is extremely rich in biomass energy. The annual production of crop straws in the country is about 600 million tons, about 300 million tons can be used as fuel, equivalent to about 150 million tons of standard coal, and ...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the domestic activated carbon production adopts traditional processes such as carbonization furnaces and activation furnaces. The old processes have disadvantages such as large energy loss, high carbon loss rate, polluting the environment, low efficiency, and high labor intensity.

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