Reverse burning multi-return-stroke biomass low-carbon energy-saving steam boiler

Abstract

The invention discloses a reverse burning multi-return-stroke biomass low-carbon energy-saving steam boiler. The steam boiler consists of a multi-return-stroke flame tube (1), a water sleeve (2), a return stroke flame outlet (3), a return stroke flame inlet (4), an ellipsoidal seal head (5), a biomass charging opening (6), a biomass semi-gasification hearth (7), a grate (8), a secondary combustion chamber (9) and a reverse burning channel (10). In the reverse burning multi-return-stroke biomass low-carbon energy-saving steam boiler, fuels are gasified in advance in the biomass semi-gasified hearth under the action of an induced draft fan, and a large number of volatiles are separated out in the gasification process; the fuels are fully combusted under the action of secondary wind; flame enters the flame tube and then the return-stroke flame outlet from bottom to top along the combustion of the fuels; the fuels are returned from the return-stroke flame inlet downwards from top to bottom; therefore, a reverse burning multi-return stroke is formed. The reverse burning multi-return-stroke biomass low-carbon energy-saving steam boiler is made of any one of iron and stainless steel. The boiler makes combustion sufficient, is low-carbon and energy-saving, makes waste profitable, realizes resource regeneration, purifies the environment and is beneficial to the nation and the people.

Description

technical field [0001] The invention belongs to a steam boiler, in particular to a counter-burning multi-pass biomass low-carbon energy-saving steam boiler. Background technique [0002] Due to the energy shortage and environmental deterioration caused by the massive use of fossil fuels, seeking a renewable energy source has become an urgent problem to be solved. Up to now, people are still burning straw, wasting resources and polluting the environment. Biomass is a renewable energy and should occupy a major position in boiler fuel. Taking advantage of the high temperature of steam, steam boilers are generally used in industry to maintain products, process heating, or also for heating. Most of the combustion methods of our general steam boilers are direct combustion of coal, sudden combustion, layer combustion, and no secondary air distribution. Part of the heat and harmful gases generated by combustion will be directly discharged into the atmosphere with the chimney, resul...

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Problems solved by technology

[0003] In view of the problems existing in the above products, the present invention provides a back-burning multi-pass biomass low-carbon energy-saving steam boiler, which solves the problems of high fuel consumption, low utilization rate of heat energy and polluted air in the above products.

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