Single-channel gas and natural gas dual-purpose burner for heating furnace and using method thereof

Abstract

The invention discloses a single-channel coal gas and natural gas dual-purpose burner for a heating furnace. A combustion-supporting air pipe is arranged on one side of a shell, a fuel pipeline is arranged on one side inside the shell, a coal gas pipeline is arranged at one end of the fuel pipeline, and a natural gas pipeline is arranged on one side of the coal gas pipeline; and a central air pipeline is arranged inside the fuel pipeline in a sleeved mode, an air distribution disc is arranged at one end of the fuel pipeline; and a disc is arranged outside one end of the central air pipeline. Ausing method of the single-channel coal gas and natural gas dual-purpose burner comprises the steps that when fuel is converted from coal gas into natural gas, a butterfly valve III is closed, a butterfly valve II is opened, and the open degrees of a butterfly valve I, the butterfly valve II and a butterfly valve IV are adjusted to enable the natural gas to be fully combusted; and when the fuel is converted from the natural gas into the coal gas, the butterfly valve II is closed, after the natural gas inside the fuel pipeline is combusted, the butterfly valve III is opened, and the open degrees of the butterfly valve I, the butterfly valve II and the butterfly valve III are readjusted to enable the coal gas to be fully combusted. The single-channel coal gas and natural gas dual-purpose burner is transformed on the basis of a traditional burner, the transformation cost of the heating furnace is greatly lowered, and the utilization rate of an old burner is increased.

Description

technical field [0001] The invention belongs to the technical field of steel rolling equipment, and in particular relates to a single-channel gas and natural gas dual-purpose burner for a heating furnace and a use method thereof. Background technique [0002] Due to the low cost of coke oven gas preparation, traditional steel rolling heating furnaces generally use coke oven gas as fuel. When the gas generator is overhauled, the heating furnace is forced to shut down, resulting in the shutdown of the hot rolling production line, which brings losses to the company's profits; To solve this problem, the research and development personnel developed a dual-purpose burner for coke oven gas and natural gas. When the gas generator is overhauled, natural gas is used as the fuel to continue production, avoiding the economic loss caused by the shutdown of the furnace; [0003] Such as Figure 1-2 As shown, the existing gas and natural gas dual-purpose burners all adopt dual channels, an...

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Problems solved by technology

[0002] Due to the low cost of coke oven gas preparation, traditional steel rolling heating furnaces generally use coke oven gas as fuel. When the gas generator is overhauled, the heating furnace is forced to shut down, resulting in the shutdown of the hot rolling production line, which brings losses to the company's profits; To solve this problem, the research and development personnel developed a dual-purpose burner for coke oven gas and natural gas. When the gas generator is overhauled, natural gas is used as the fuel to continue production, avoiding the economic loss caused by the shutdown of the furnace;

[0003] like Figure 1-2 As shown, the existing gas and natural gas dual-purpose burners all adopt dual channels, and a combustion-supporting air duct 3 is arranged on one side of the housing 1, and a natural gas pipeline 5 is arranged inside the housing 1, and the natural gas pipeline 5 and the municipal natural gas pipeline Connected, the hot air channel 21 is formed between the outer wall of the natural gas pipeline 5 and the inner wall of the housing 1; a gas pipeline 6 is set in the natural gas pipeline 5, and the gas pipeline 6 is connected with the gas outlet pipe of the gas generator, and the outer wall of the gas pipeline 6 is connected to the natural gas pipeline 5 A natural gas channel 9 is formed between the inner walls; a central air pipeline 7 is set in the gas pipeline 6, and a gas channel 10 is formed between the outer wall of the central air pipeline 7 and the inner wall of the gas pipeline 6; when the gas generator is overhauled, natural gas can still be used as fuel to continue production; however, for traditional heating furnaces, in order to realize the dual use of gas and natural gas, new burners must be replaced, and the price of a single burner ranges from tens of thousands to hundreds of thousands, while a large heating furnace needs six With seventy burners, the replacement cost is as high as several million or even tens of millions, which undoubtedly increases the cost input of the enterprise

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