Swirling flow premixing type burner

Abstract

The invention discloses a swirling flow premixing type burner. The swirling flow premixing type burner comprises a first burner brick, a second burner brick, a burning-supporting air chamber, an air swirler and a fuel gas nozzle, wherein a central hole is formed in the first burner brick; an upper section of the central hole is matched with the shape of the exterior outline and the dimension of the second burner brick; a lower section of the central hole is a cone-shaped hole with a large upper end aperture and small lower end aperture; a premixing chamber is arranged in a central part of the second burner brick; the fuel gas nozzle is a swirling flow nozzle and consists of a nozzle body and a gas inlet pipe which is connected with the nozzle body; the first burner brick is arranged on a furnace body; the second burner brick is arranged in the first burner brick; the air swirler is positioned at the inlet of the premixing chamber arranged in the second burner brick; the fuel gas nozzle is combined with the air swirler; the nozzle body of the fuel gas nozzle is positioned below the air swirler; and the burning-supporting air chamber is arranged on the furnace body.

Description

technical field [0001] The invention belongs to the technical field of combustion, and in particular relates to a high-efficiency and energy-saving burner used in industrial furnaces (coal-to-ammonia-methane reformer, purge gas, combustible tail gas recovery furnace, etc.). Background technique [0002] Due to its high operating temperature and high fuel consumption, industrial furnaces are often the processing units with the highest energy consumption in factories. The progress of industrial furnace energy-saving technology is mainly reflected in two aspects: one is the recovery of waste heat from flue gas, which is used as a heating medium; the other is to optimize the combustion process and reduce the amount of smoke. The former has been accepted by the industry, and most industrial furnaces are equipped with waste heat recovery devices. The latter has not been paid attention to by the industry. Many industrial furnaces still use backward combustion technology. The amoun...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of burner is that the amount of combustion air is large and the flame is longer

With the reduction of the calorific value of the gas, a large amount of air takes away the heat of the furnace, resulting in a decrease in the temperature of the reforming furnace, a decrease in the methane conversion rate, an increase in the pure oxygen consumption of the secondary reformer, and a sharp increase in the energy consumption of methane conversion

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