Biomass polygeneration equipment and method for integral pyrolysis-flue gas combined cycle

Abstract

The invention relates to biomass poly-generation equipment and method for integral pyrolysis-flue gas combined cycle. The biomass poly-generation equipment comprises a pretreatment system, a drying system, a temperature regulation system, an integral pyrolysis furnace, a comprehensive combustion furnace, a fuel gas purification system, a carbon forming system, a gas storage cabinet and a solar collector. In order to solve the problems that the controllability of three processes, namely pyrolysis-pyrolysis gas cracking-solid carbon decoking in the prior art is weak and the integrity is insufficient, the invention provides the biomass poly-generation equipment and method for integral pyrolysis, the three heat absorption processes, namely pyrolysis, pyrolysis gas cracking and solid carbon decoking are completed in regions and segments in the same high temperature environment; the pyrolysis-pyrolysis gas cracking-solid carbon decoking functions are integrated and integral, the reaction process is controllable, fuel gas with a high heat value and such products as high temperature carbon, wood tar, wood vinegar are produced continuously and efficiently. The biomass is fully cracked and the product quality is effectively controlled.

Description

technical field [0001] The invention relates to equipment and method for biomass polygeneration, in particular to equipment and method for biomass polygeneration of integrated pyrolysis-flue gas combined cycle. Background technique [0002] With the increasingly tense energy supply situation and the increasing awareness of social environmental protection, renewable and clean biomass energy has attracted more and more attention. The preparation of biochar, gas, oil and other products by thermochemical method is one of the main ways to utilize biomass energy. Among them, since no gasification agent is added, the pyrolysis method has the advantage of higher calorific value of gas compared with the gasification method. Biomass polygeneration technology formed by pyrolysis method can produce biocoke, wood tar and wood vinegar while producing high-value biogas, and the economic benefits have been greatly improved, so it has attracted more and more attention. [0003] China Paten...

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problems of poor controllability and insufficient integration of the three processes of "pyrolysis-pyrolysis gas cracking-carbon fixation and decoking" existing in the prior art, and proposes an "integral pyrolysis" method. Biomass polygeneration equipment and methods, the so-called "integral pyrolysis" refers to the three endothermic processes of pyrolysis, pyrolysis gas cracking and carbon solidification and decoking in the same high-temperature environment, which are completed in sections and regions; Pyrolysis-pyrolysis gas cracking-solid charcoal decoking" functions are three-in-one, integrated, and the reaction process is controllable, which can continuously and efficiently produce high-calorific value gas and high-temperature charcoal, wood tar, wood vinegar and other products

[0006] Another purpose of the present invention is to solve the problem in the prior art that a large amount of flue gas is required to be generated under the heating mode of the "flue gas high temperature section", and propose a "flue gas combined cycle" biomass polygeneration equipment and method, the so-called "flue gas combined cycle" means that the high-temperature section of the flue gas utilized by the overall pyrolysis constitutes an internal cycle (closed cycle), and the external flue gas after pyrolysis and utilization is used for raw material drying to form an external cycle (open cycle). ); It has the characteristics of multi-cycle utilization and high-efficiency utilization by segmenting temperature ranges according to process needs

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