Direct flow oil-saving burner faulty coal for combustion

Abstract

The invention discloses a bad fuel coal oil-saving direct current burner, comprising coal powder combustion chamber, where the front end of the coal powder combustion chamber is provided with an impact coal powder concentrator, a primary combustion chamber is arranged in the coal powder combustion chamber, plural oil combustion chambers are arranged outside the middle of the primary combustion chamber, a small-oil quantity oil combustor is arranged in the oil combustion chamber, the tail of the primary combustion chamber is connected with the secondary combustion chamber, and heat storage fireproof heat-insulating material is laid in a heat storage coal powder stable combustion chamber. The advantages are using less oil to ignite large amount of coal powder, and oil-saving above 95%; stable combustion function; good environmental protection; high efficiency.

Description

technical field [0001] The invention relates to a combustion device, in particular to a direct-flow oil-saving burner for burning low-quality coal (including low-quality bituminous coal, lean coal and anthracite). Background technique [0002] Large-scale power plants using low-quality coal boilers consume a huge amount of oil for ignition and ultra-low-load stable combustion. Generally, a 200MW boiler consumes about 150-200 tons of oil for one cold furnace raise, and a 300MW boiler consumes about 200-300 tons of oil. It is a newly built unit, generally a 300MW newly built boiler, which consumes 1500-2500 tons of oil during the commissioning stage. According to statistics, the fuel consumption of power plant boilers is about 1.8-2 million tons of fuel oil each year, equivalent to about 8-10 billion yuan. [0003] Oil is a scarce strategic resource in my country. The Department of Resource Conservation and Comprehensive Utilization of the State Economic and Trade Commission ...

AI Technical Summary

Problems solved by technology

[0004] Plasma oil-free ignition technology and low-oil ignition technology have been successfully developed in China, but these technologies are only used for high-volatile bituminous coal, and cannot be applied to low-quality bituminous coal, lean coal and anthracite coal

Moreover, the plasma oil-free ignition technology system is more complicated, the investment cost is high, and the reliability is not high; the pulverized coal combustion rate is low (about 50%) in the

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