Denitration heat-accumulating type burner for industrial furnace

Abstract

The invention discloses a denitration heat-accumulating type burner for an industrial furnace. A penetrating gas passage is formed in a burner body; a honeycomb ceramic body and a heat accumulator arearranged on the gas passage front and back along the combustion-supporting gas intake direction; a plurality of fine holes are formed in the honeycomb ceramic body, and a catalyst for a denitration reaction is arranged in the holes of the honeycomb ceramic body; a certain distance is reserved between the honeycomb ceramic body and the heat accumulator to form a mixing cavity; a denitration reducing agent feed hole is formed in the burner body, is communicated with the mixing cavity, and is used for delivering a denitration reducing agent into the mixing cavity. According to the burner, the honeycomb ceramic body is arranged in the gas passage of the burner, the denitration catalyst is deposited in the holes of the honeycomb ceramic body, and the denitration reducing agent is introduced and optionally reacts with nitride (NOx) in the smoke by utilizing an SCR denitration technology to generate nontoxic pollution-free nitrogen and water when high-temperature smoke is emitted outward through the gas passage of the burner, so that the emission amount of nitride is greatly reduced.

Description

technical field [0001] The invention relates to an accessory part of an industrial furnace, in particular to a denitrification regenerative burner for an industrial furnace using natural gas, liquefied gas, etc. as fuel. Background technique [0002] Industrial furnaces that use natural gas, coal gas or fuel oil as fuel, such as heating furnaces and heat treatment furnaces, work by placing the workpiece to be heated in the furnace, heating up to the temperature required by the process, and maintaining or uniform temperature. Industrial furnaces are equipped with burners during heating, through which the combustion-supporting gas (air) and fuel are passed into the furnace separately, or mixed in the burner and then passed into the furnace. For the regenerative combustion burner, the gas channel set in it is not only the input channel of combustion-supporting gas, but also the discharge channel of high-temperature flue gas. Heat exchange with high-temperature flue gas, increa...

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Problems solved by technology

[0004] The present invention aims at the deficiencies such as the industrial furnace in the prior art produces more nitrides (NOx) during the heating process, cannot meet the emission requirements of the state and local governments, and has relatively large pollution to the atmosphere, and provides a method for reducing the nitride (NOx) NOx) denitrification regenerative burners for industrial furnaces

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