Direct combustion dispersed heat supplying method for biomass pyrolysis furnace

Abstract

The invention discloses a direct combustion dispersed heat supplying method for a biomass pyrolysis furnace, which relates to the technical field of biomass thermochemistry. A heat supplying combustion device of the pyrolysis furnace comprises pluralities of combustor groups, all the combustor groups are dispersedly distributed on the upper portion of the pyrolysis furnace along an axial direction, each combustor group is composed of pluralities of small combustor nozzles, and the highest temperature of a combustion area inside the furnace is below 1600 DEG C; fuels for supplying heat to the pyrolysis furnace and oxidizers are separated before entering the pyrolysis furnace and conduct non-premixed combustion inside the furnace; the pyrolysis furnace with a fixed outer casing is horizontally arranged and stirs biomass inside the furnace through the rotation of a stirring shaft with a stirring rod; during operation, the highest temperature inside the combustion area can be adjusted by adjusting the amount of externally supplied fuels and / or inert component content in the oxidizers and / or by adjusting the rotation speed of the stirring shaft with the stirring rod. The direct combustion dispersed heat supplying method is applied to biomass pyrolysis treatment, and meets engineering application requirements of intermediate-temperature rapid pyrolysis of biomass raw materials and of subsequent entrained flow gasification through the technology of 'direct combustion dispersed heat supplying'.

Description

technical field [0001] The direct combustion decentralized heat supply method of the biomass pyrolysis furnace of the present invention relates to the technical field of energy and chemical industry; in particular to the technical field of thermochemistry of biomass; in particular to the medium-temperature rapid heating of biomass in order to realize the entrained gasification of biomass The technical field of pyrolysis treatment; specifically relates to the technical field of direct combustion decentralized heat supply method of biomass pyrolysis furnace. Background technique [0002] Biomass is an organic substance produced by absorbing carbon dioxide in the air through photosynthesis. It is widely distributed, has a large amount of availability, and is the only renewable natural raw material that contains hydrocarbon components and heat energy and can be stored; using biomass for energy Utilization and chemical production, with CO 2 Characterized by zero emissions. With...

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Problems solved by technology

However, it can be seen from the above introduction that all known direct combustion heating pyrolysis methods have various deficiencies and potential safety hazards, and cannot simultaneously satisfy high heat transfer efficiency, high heat utilization efficiency, combustion heating safety, and operation. Safety and stability, low investment in pyrolysis furnace equipment and other industrial implementation requirements

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