Tobacco stem fluidized bed boiler

Abstract

The invention discloses a tobacco stem fluidized bed boiler, belongs to industrial boilers, and aims at providing a boiler which is full in combustion, difficult to coke and block and convenient to clean, and takes tobacco stems as fuel. The boiler comprises a boiler body, a cyclone separator and a smoke discharge pipe, wherein the boiler body comprises a main combustion chamber (1) and an auxiliary combustion chamber (35), and a grate comprises a plurality of air caps (27) fixed at the bottoms of the two combustion chambers respectively; two isobaric air chambers communicated with the two combustion chambers through the air caps (27) are arranged below the two combustion chambers, and a first concentrated-phase tank (18) is communicated with the two combustion chambers; the cyclone separator (4) is communicated with the auxiliary combustion chamber (35), and a return device comprises a third isobaric air chamber (32), an air cap (27), an air inlet branch pipe (31) and a return pipe (26); a second concentrated-phase tank (17) is arranged below the third isobaric air chamber (32). The boiler is long in combustion time, sufficient in supplied oxygen, energy-saving and environment-friendly, and can be used for treating tobacco stem wastes.

Description

technical field [0001] The invention relates to a boiler, in particular to a boiler using biomass such as tobacco stems as the main fuel. Background technique [0002] Tobacco stems, tobacco leaf powder, and penicillium mixed tobacco leaves are wastes generated during the redrying production process of tobacco leaves, which have always been a problem that has plagued the development of enterprises. At present, landfill is usually used for disposal, which not only has high disposal costs, but also wastes valuable biomass resources. If waste such as tobacco stems can be used as fuel, it can not only provide rebaking steam for enterprises, but also reduce the use of fossil fuels or coal, and open up a new way for enterprises to dispose of waste. [0003] At present, traditional biomass boilers are usually used to burn tobacco stems, which belongs to the chain layer combustion method; usually the tobacco stems are crushed and then added with a combustion aid, and then compresse...

AI Technical Summary

Problems solved by technology

However, the processing and pressing of granular fuel not only consumes a lot of electric energy, but also the tobacco stems are easy to coke and block the heating surface during the combustion process, and it is difficult to clean the slag; at the same time, there are defects such as insufficient combustion.

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