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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 to the combustion of block fuel and liquid fuel, the combustion of block fuel and gaseous fuel, and the combustion of block fuel and powder fuel, which can solve the problem of low boiler manufacturing Cost and other issues, to achieve good air supply conditions, increase convection and radiation heat transfer, and reduce manufacturing costs

Active Publication Date: 2010-05-19
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a hexagonal or octagonal tangential circular arrangement of a single fireball direct-flow burner for fuel or gas, which is used for 600MW-1000MW boilers burning fuel oil or gas, and solves the problem of existing 600MW-1000MW four-corner tangential combustion Heat load q on wall surface of boiler burner area Hr Low and high boiler manufacturing costs

Method used

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

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Embodiment 1

[0029] combine image 3 and Figure 4 To describe this embodiment, Figure 4 for image 3 I-I sectional view, image 3 for Figure 4 Section view of II-II.

[0030] The present invention provides a hexagonal or octagonal tangential arrangement of a single fireball direct-flow burner for fuel or gas, including a boiler body 1, a furnace 2, a fuel or gas operating station 3 in front of the furnace, a fuel or gas pipeline 4, and an oil gun or air gun 5 , Fuel air nozzle 14, secondary air nozzle 6, overfire air nozzle 10 and furnace outlet heat exchange screen 13. Each boiler 1 is equipped with a set of fuel oil or gas operation station 3 in front of the furnace. The furnace 2 is composed of four water-cooled walls 7. Two sets of burners 8 are arranged on each water-cooled wall 7 of the furnace 2. There are eight sets of burners 8 in total. The two sets of burners on the front wall are respectively a set of burners 8 and 8. Group of burners 8, the two groups of burners on t...

Embodiment 2

[0036] combine Figure 5 and Figure 6 To describe this embodiment, Figure 6 for Figure 5 I-I sectional view, Figure 5 for Figure 6 Section view of II-II.

[0037] The difference between this embodiment and Embodiment 1 is that two sets of burners 8 are respectively arranged on the water-cooled walls 7 of the front and rear walls of the furnace 2, and one set of burners 8 are respectively arranged on the left and right water-cooled walls 7 of the furnace 2. There are six burners in total. Group of burners, two groups of burners on the front wall are 1 group of burners 8, 6 groups of burners 8, one group of burners on the left wall are 2 groups of burners 8, and two groups of burners on the back wall are 3 groups of burners respectively 8, 4 sets of burners 8, one set of burners on the right wall is 5 sets of burners 8. Each group of burners 8 is arranged with four oil guns or air guns 5 at intervals along the vertical direction. For example, one group of burners 8 in...

Embodiment 3

[0041] combine Figure 7 and Figure 8 To describe this embodiment, Figure 8 for Figure 7 I-I sectional view, Figure 7 for Figure 8 Section view of II-II.

[0042] The difference between this embodiment and Embodiment 1 is that a group of burners 8 are respectively arranged on the four corners of the furnace 2, and a group of burners 8 are respectively arranged on the four water-cooled walls 7 of the furnace 2, and there are eight groups of burners in total. The four groups of burners 8 on the four corners are 1 group of burners 8, 3 groups of burners 8, 5 groups of burners 8, 7 groups of burners 8, and the numbers of four groups of burners 8 on the four walls are 2 groups Burners 8, 4 sets of burners 8, 6 sets of burners 8, 8 sets of burners 8. Each group of burners 8 is arranged with four oil guns or air guns 5 at intervals along the vertical direction. For example, one group of burners 8 includes four oil guns or air guns 5, which are respectively the first oil gu...

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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 the walls 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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/32
Inventor 张建文冯景源吴蓓玲陈楠
Owner SHANGHAI BOILER WORKS
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