Carbonization furnace capable of recycling biomass pyrolysis gas and biomass carbonization method

Abstract

The invention relates to the field of carbonization furnace, specifically to a carbonization furnace capable of recycling biomass pyrolysis gas and a biomass carbonization method. The carbonization furnace capable of recycling the biomass pyrolysis gas comprises a material hopper, a drying pyrolysis chamber, a carbonization chamber and a cooling chamber; a pyrolysis gas outlet is formed in the topof the drying pyrolysis chamber; the pyrolysis gas outlet is connected with a pyrolysis gas separating and purifying device; a fire grate is arranged between the bottom of the drying pyrolysis chamber and the top of the carbonization chamber; a smouldering pyrolysis ignition opening and a smouldering pyrolysis air inlet are formed in the side wall of the drying pyrolysis chamber and formed in positions above the fire grate; a combustion chamber is formed in the carbonization furnace; a combustion disc used for heating the combustion chamber is arranged in the combustion chamber; a fuel inletof the combustion disc is correspondingly connected with a gas outlet of the pyrolysis gas separating and purifying device and an external fuel tank; and heat insulation plates which can be opened andclosed are correspondingly arranged at the bottom of the carbonization chamber and the bottom of the cooling chamber. The carbonization furnace capable of recycling the biomass pyrolysis gas, provided by the invention, has the advantages that the pyrolysis gas generated in the biomass carbonization can be sufficiently utilized to reduce energy consumption, and the biomass raw materials can be more sufficiently collected and utilized.

Description

technical field [0001] The invention relates to the field of carbonization furnaces, in particular to a carbonization furnace for recycling biomass pyrolysis gas and a biomass carbonization method. Background technique [0002] With the increase of population, the continuous deepening of industrialization and modernization, the problem of energy shortage is highlighted. Therefore, it has become the consensus of all mankind to study and utilize clean and efficient renewable energy. my country is a large agricultural country with abundant reserves of biomass resources. Biomass pyrolysis and carbonization technology is a thermochemical conversion technology, which refers to the process in which biomass raw materials are heated in an anaerobic or low-oxygen environment to cause partial internal decomposition to form biochar, biotar and pyrolysis gas. The generated biochar can be used as fuel, and can also improve the soil, absorb heavy metals, pesticides and other pollutants i...

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Problems solved by technology

[0003] In the existing technology, the current biomass carbonization technology has a series of problems such as difficult control of the carbonization process, discontinuous production, waste of other carbonization products, consumption of external energy, and low carbonization rate, which need to be improved urgently

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