Boiler oxygen-enriched combustion system for power generation set

Abstract

The invention discloses a boiler oxygen-enriched combustion system for a power generation set. The boiler oxygen-enriched combustion system comprises an air pipeline, a pure oxygen pipeline and a blast furnace gas pipeline. The boiler oxygen-enriched combustion system is characterized in that the air pipeline is connected to a forced draught blower, the forced draught blower conveys air into a mixing pipeline, and the pure oxygen pipeline is connected to the mixing pipeline; the air and pure oxygen are fully mixed in the mixing pipeline to form oxygen-enriched combustion-supporting gas with the oxygen concentration being 28%, and then the oxygen-enriched combustion-supporting gas is blown into a hearth; the blast furnace gas pipeline is connected to the interior of the hearth, and blast furnace gas and the oxygen-enriched combustion-supporting gas are fully burnt after being mixed. According to the boiler oxygen-enriched combustion system for the power generation set, heat loss of fuel is reduced due to the oxygen-enriched environment in the entire combustion system, and the heating rate of the combustion system is effectively increased; the temperature of flames in a furnace is increased, the strength of the flames in the furnace is improved, and the heat transmission efficiency of the flames in the furnace is effectively improved; thermal radiation is improved, and the heat utilization rate is increased; energy saving and combustion supporting are achieved, emission of pollution gas is reduced, the environment is protected, and ecological damage is avoided.

Description

technical field [0001] The invention relates to the technical field of oxygen-enriched combustion, in particular to a boiler oxygen-enriched combustion system of a generator set. Background technique [0002] The 12MW gas waste heat generating set uses Fuyu gas produced by burning the blast furnace to generate electricity. The gas is introduced into the boiler, and the air is introduced into the boiler and mixed with the gas at the combustion burner. The chemical energy is converted into thermal energy through combustion, and finally converted into electrical energy. Air is usually used as a flame retardant, because the oxygen content in the air is about 21%, and the oxygen content concentration is not rich, so that the combustion is not sufficient, the combustion temperature is not high enough, and a large amount of HC, CO and other gases are produced after combustion, resulting in atmospheric pollution. Pollution and ecological damage, low power conversion efficiency. Co...

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Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology and provide a boiler oxygen-enriched combustion system for a generating set, so as to solve the problem that the traditional gas waste heat generating set uses air for combustion, and the combustion is not sufficient , the combustion temperature is not high enough, and a large amount of HC, CO and other gases are produced after combustion, causing air pollution and ecological damage, and the problem of low power conversion efficiency

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