Boiler using biomass as fuel

Abstract

The invention discloses a boiler with biomass as fuel, which is characterized by the following: comprising boiler chassis 1, furnace bed 2, fire box 4, boot 3, front pipeline 5, rear pipeline 17, upper drum 13, lower drum 18, convection tube bank 12, water inlet 15, hot water or steam outlet 14 and smoke outlet 16; arranging whirl pipeline 6 on the upper of the front pipeline 5 and the rear pipeline 17; bracing the whirl pipeline 6 between the front pipeline and the rear pipeline; forming to a body; opening one to two round rotary hole 8 on the whirl pipeline 6; arranging one to several grade whirl twice wind device in the round rotary hole 8; constructing the device with communicated twice wind main pipe 24, twice wind endless tube 7 and twice wind injector 21; adopting reciprocating grate for the furnace bed 2; constructing the reciprocating grate with reciprocating grate of head air supply; setting the head of the furnace bed sheet as multiple layer step; setting multiple through hole at each layer step. This invention possesses simple production and low cost, which can be fit for the boiler with capacity below 10t / h.

Description

technical field [0001] The invention relates to a device that can utilize renewable energy, in particular to a boiler that uses biomass as fuel Background technique [0002] At present, the biomass fuel boilers on the market mainly adopt the technology of the Danish BWE company and adopt the water-cooled vibrating grate method to incinerate the biomass fuel. The disadvantage is that the structure is complex and the cost is high. Bed mode, there are several domestic companies using this technology, but circulating fluidized bed boiler fan power consumption is high, the cost of furnace wall materials is high, it is not suitable for boilers with a capacity of less than 10t / h; in addition, the invention patent applied by Shanghai Jiaotong University , Patent No. ZL03150475.2 "Variable Furnace Arch Structure Low NOx Biomass Boiler". The air distribution through the warehouse is easy to make the fuel burn quickly in the front of the furnace. Biomass fuel cannot be burned alone, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the biomass fuel boilers on the market mainly adopt the technology of the Danish BWE company and adopt the water-cooled vibrating grate method to incinerate the biomass fuel. The disadvantage is that the structure is complex and the cost is high. Bed mode, there are several domestic companies using this technology, but circulating fluidized bed boiler fan power consumption is high, the cost of furnace wall materials is high, it is not suitable for boilers with a capacity of less than 10t / h; in addition, the invention patent applied by Shanghai Jiaotong University , Patent No. ZL03150475.2 "Variable Furnace Arch Structure Low NOx Biomass Boiler". The air distribution through the warehouse is easy to make the fuel burn quickly in the front of the furnace. Biomass fuel cannot be burned alone, sometimes it needs to be mixed with coal

Images