Technology for preparing high efficiency biomass fuel which is formed after charred

Abstract

The invention relates to a technology for preparing a high efficiency biomass fuel which is formed after charred, and relates to biomass carbonization and formation, and energy fields. The preparation technology comprises: 1. crushing and charring the biomass firstly; 2. after coarsely crushing the biomass waste by a shredder and finely crushing the biomass waste by a three-rotor hammer planer, removing ferruginous metals, and then removing heavy pollutants such as sand and stones which do not accord with production of the biomass fuel by pneumatic separation; 3. charring the materials satisfying specification in a charring device; 4. burning volatile gases and the biomass waste generated in the charring process in a combustion furnace, sending a high temperature gas into the charring device by a blower fan so as to provide heat demand for drying and material carbonization in the production process; 5. finely crushing or grinding the biomass again after charred, and then cooling; and 6. sending the charred finely particles into a granulator for granulation and formation. The technology implements continuous automation production of biomass formation, fuel carbonization and granulation formation.

Description

Technical field: [0001] The invention relates to the field of biomass carbonization molding and its energy conversion, in particular to a high-efficiency biomass fuel preparation process that is firstly carbonized and then granulated after crushing and cleaning. Background technique: [0002] my country is rich in biomass resources, mainly agricultural and forestry residues. It is characterized by low energy density and non-concentrated distribution, which brings difficulties to the large-scale production and utilization of biomass. Biomass forming carbonization technology is one of the methods to solve the above problems and effectively utilize biomass resources. At present, biomass briquettes include two molding methods: direct solidification of biomass and carbonization of fuel after molding. These two molding methods have defects such as unstable finished product shape, uneven heat, low molding rate, difficult quality control, poor working environment and inability to c...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation process of high-efficiency biomass fuel after carbonization, which overcomes the shortcomings of the original biomass fuel, such as poor shape quality, low molding rate, and uneven energy distribution, and realizes carbonization and carbonization of biomass fuel. Continuous automatic production of granulation molding, and better product quality, stronger environmental protection, and lower energy consumption will further expand the use of biomass briquettes, increase the added value of biomass briquettes, and better promote the further development of the biomass industry development of