Forced-draft burner and method for regularizing side-combustion high-temperature preheated air of square-box furnace

Abstract

The invention discloses forced-draft burner and method for regularizing side-combustion high-temperature preheated air of a square-box furnace. The burner is provided with two independent grades of gas wheels; a main gas gun 3 is arranged in the center of the burner and the gas blower of the gas gun is communicated with a combustion channel consisting of flam path bricks 1, that is to say, the gas blower of the gas gun is communicated with a primary combustion area; a combustion air channel is communicated with the center of the burner; and an air adjustment butterfly vale 8 is arranged for controlling the quantity of combustion air; all combustion air enters the burner via the combustion air channel and is mixed with the gas blown out of the main gas gun 3 for combustion together in the combustion channel consisting of the flame path bricks 1; a second-level gas distribution ring 4 is arranged and communicated with a second-level gas source; and a plurality of second-level gas guns 10 are arranged on the second-level gas distribution ring 4 and around the outer wall of the flame bricks of the burner. By adopting graded combustion and flue backflow technologies, the invention can reduce the generation of nitric oxides and has the advantages of full combustion, energy saving, environmental protection and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of petrochemical reforming square box furnaces, and relates to a side-burning high-temperature preheating air forced ventilation burner and a method for reforming square box furnaces. Background technique [0002] At present, with the improvement of the national environmental protection regulations and the increasing demand for clean fuels, the position of the continuous reforming unit in the refinery has become more important. The heating furnace is one of the core equipment in the reforming unit. The heater is the key energy supply equipment of the heating furnace, and its performance directly affects the distribution and transfer of heat in the furnace. Therefore, the performance of the burner is required not only to meet the heating demand but also to meet the requirements of energy saving and emission reduction. Traditional reformer burners generally use natural air supply. Due to the low temperature a...

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Problems solved by technology

Traditional reformer burners generally use natural air supply. Due to the low temperature and low pressure of the combustion air, the loss of fuel chemical incomplete combustion is relatively large, and the heat utilization efficiency of the system is low.

The hot flue gas from the furnace chimney outlet is not fully utilized, and the heat from other relatively low-temperature heat sources in the refinery is not fully utilized, resulting in considerable energy waste

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