Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors

An octagonal tangent and burner technology, which is applied in the combustion of block fuel and liquid fuel, the combustion of block fuel and gaseous fuel, the combustion of block fuel and powder fuel, etc., which can solve the problem of low boiler manufacturing. Cost and other issues, to achieve the effects of good air supply conditions, high heat flow intensity, and improved convection and radiation heat transfer
CN101709870BActive Publication Date: 2011-05-25SHANGHAI BOILER WORKS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI BOILER WORKS
Publication Date
2011-05-25

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Abstract

The invention provides hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors, which is characterized in that: six or eight groups of combustors are arranged in a hearth; each group of combustors are vertically provided with at least two oil guns or gas guns at intervals, two fuel blast nozzles and three secondary blast nozzles; the fuel oil or the fuel gas at a fuel oil or fuel gas operation station outlet in front of the furnace is connected with at least two layers of oil guns or gas guns arranged on four walls of a boiler through fuel oil or fuel gas pipelines; and each layer of oil guns or gas guns consist of six or eight oil guns or gas guns which are in the same level but not in the same group. The hexagonal or octagonal tangential arrangement of the fuel-oil or fuel-gas single-fireball direct-flow combustors can ensure that the distance between the uppermost and undermost two oil guns or gas guns and the thermal load of thewalls of the combustor area are controlled in ideal ranges, the total height of the boiler is decreased and the manufacturing cost of the boiler is greatly reduced. Because air supplying conditions on two sides of a jet flow are good, flames of the oil guns or gas guns are not easy to attach to the walls and the safety of the work of a water-cooling wall is improved.
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Description

technical field

[0001] The invention relates to a hexagonal or octagonal tangential circular arrangement of a single fireball direct-flow burner for fuel or gas, and belongs to the technical field of boiler combustion devices. Background technique

[0002] Boilers that use fuel oil and gas to generate electricity have a large market demand both at home and abroad. These boilers usually use straight-flow burners arranged in tangential circles, or swirl burners arranged opposite to each other on the front and rear walls. For oil-fired boilers, mechanical atomization, steam atomization and air atomization are usually used. In order to ensure the quality of atomization, the fuel flow rate of a single oil burner should not be too large, and generally needs to be controlled at about 5000Kg / h.

[0003] As the capacity of the unit develops to 600MW~1000MW, due to the limitation of the thermal power of a single oil gun or air gun, the number of oil guns or air guns needs to be increa...

Claims

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