Built-in integrated smoke exhaust-heat boiler burner for catalysis device

Abstract

The invention belongs to a burner technique and discloses a built-in integrated smoke exhaust-heat boiler burner for a catalysis device. The burner is positioned on the lower part of the furnace body of an incinerator of an exhaust-heat boiler; a plurality of primary air branches 13 are respectively coaxial with a corresponding fuel air gun and are arranged around the fuel air gun; an air cyclone 20 is arranged at an outlet of the primary air branch; an outlet of the fuel air gun and the primary air cyclone are arranged in a corresponding burning channel; an upper end face of a regenerated smoke distributing cavity is provided with a plurality of regenerated smoke cyclones 18; an outlet of each secondary air injection pipe 4 is arranged opposite to the cyclone; a plurality of burning channels of fuel mixture distributed along a circumference are positioned between mixed regenerated smoke outlets formed along inner and outer layers of circumferences; and the mixed regenerated smoke and the mixed fuel gas are uniformly distributed as a mixing burning ring with separated inner and outer layers. The burner of the invention has the advantages of integration, simple and reliable structure, convenient operation, low cost, complete burning and high heat efficiency.

Description

technical field [0001] The invention belongs to the burner technology, and is especially suitable for the high-efficiency combustion of CO-containing flue gas of a catalytic device waste heat boiler in the oil refining industry, and specifically relates to a built-in integrated catalytic device flue gas waste heat boiler burner. Background technique [0002] Refineries generally have catalytic cracking units. During the operation of the unit, catalyst regeneration aerobic combustion produces a large amount of flue gas containing about 3-10% (V) of CO and a small amount of combustible gas. This part of flue gas not only has a certain temperature of about 600 ℃, and contains a certain amount of CO gas that can be further combusted, which can release waste heat. Therefore, a flue gas waste heat boiler is generally installed at the rear end of the regeneration flue gas of the catalytic device to make full use of the waste heat of the flue gas to achieve the purpose of energy savi...

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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention discloses a built-in integrated catalytic device flue gas waste heat boiler burner, so that the burner has integrated type, simple and reliable structure, sufficient incineration, high thermal efficiency, easy operation, low cost, etc. Advantages, can effectively solve technical problems such as complex manufacturing process, scattered structure, difficult operation and poor combustion effect of existing equipment

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