Integrated biomass gasification low-nitrogen oxygen-deficient combustion boiler

Abstract

The invention discloses an integrated biomass gasification low-nitrogen oxygen-deficient combustion boiler. The low-nitrogen oxygen-deficient combustion boiler comprises a gasification combustion area, a heat exchange area and an ash deposition area which are arranged in the same combustion boiler body. The gasification combustion area comprises a combustion chamber and a rotary combustion bed layer, the rotary combustion bed layer is arranged below the gasification combustion area, the rotary combustion bed layer comprises a rotary combustion bed, a fixed gear is arranged on the outer ring ofthe rotary combustion bed, and a motor drives the rotary combustion bed to rotate through the fixed gear; the rotary combustion bed is a conical plate, and the air cap is arranged on the conical plate; the central position of the conical plate is hollow and is connected with the ash falling pipe; a primary air duct is arranged below the conical plate, a fixed air duct is arranged below the primary air duct, and the fixed air duct is connected with a primary fan air outlet; the combustion chamber is a cylindrical cavity connected with the rotary combustion layer, an air pipe surrounding the inner wall of the cavity is arranged in the cavity, the heat exchange area is arranged above the gasification combustion area, a heat exchange layer is arranged in the heat exchange area, and the heat exchange layer is formed by evenly arranging heat conduction oil pipelines or steam pipelines; and the ash deposition area is communicated with the heat exchange area.

Description

technical field [0001] The invention relates to the field of biomass boilers, in particular to an integrated biomass gasification low-nitrogen and oxygen-poor combustion boiler. Background technique [0002] Biomass boiler is a type of boiler. A boiler that uses biomass energy as fuel is called a biomass boiler. The classification of biomass boilers: horizontal biomass boilers, vertical biomass boilers. Biomass gas heat transfer oil furnace, biomass steam boiler, biomass hot water boiler, biomass heat transfer oil furnace. The fuel of the boiler is BMF fuel, and the fuel is sent to the top bunker by the feeder, and then sent to the furnace by the screw feeder, and evenly scattered on the grate. The fuel is sent into the furnace by the screw feeder, where it is gradually preheated, dried, ignited, and burned due to the action of high-temperature flue gas and primary air. During this process, a large amount of volatile matter is precipitated and the combustion is violent. Af...

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Problems solved by technology

[0003] However, the biomass boiler only uses primary air, which is prone to insufficient combustion, low biomass utilization rate, and the exhausted gas contains more harmful substances, which is not conducive to the environment.

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