Anti-abrasion and attrition-reducible circulating fluidized bed boiler

A circulating fluidized bed and anti-wear technology, which is applied in the direction of fluidized bed combustion equipment, burning fuel in a molten state, lighting and heating equipment, etc., can solve the problem that the inner wall of the boiler cannot be protected, and the wear of protrusions such as welding seams cannot be solved. , The layout method of anti-wear and wear-reducing devices is unclear, etc., to achieve a good anti-wear effect
CN103185337AActive Publication Date: 2013-07-03εˆ˜ε°‘ε…‰
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
εˆ˜ε°‘ε…‰
Publication Date
2013-07-03

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Abstract

The invention provides an anti-abrasion and attrition-reducible circulating fluidized bed boiler. The circulating fluidized bed boiler comprises a plurality of water wall tubes for forming a furnace water wall, wherein a plurality of horizontal flow blocking beams perpendicular to the water wall tubes in the length direction are arranged on the water wall; the positions of the horizontal flow blocking beams on the water wall meets an exponential formula that a<n+1>-(L+1)*a+L is equal to U; the value of the a can be obtained by using a mathematical Newton secant method; the root of a being equal to 1 is omitted to obtain a first horizontal flow blocking beam; the distance between the first horizontal flow blocking beam and an anti-abrasion plastic upper edge of a dense-phase zone is a; the distance between a second horizontal flow blocking beam and the first horizontal flow blocking beam is a<2>; and so on, the distance between a nth horizontal flow blocking beam and a (n-1)th horizontal flow blocking beam is a<n>. According to the invention, the horizontal flow blocking beams are arranged in the boiler, do not obviously affect rated operating parameter of the boiler, can effectively reduce abrasion of grains on the water wall tubes, and can reduce abrasion effect of swirl, turbulence, swirl flow, angle gather and the like, and can realize an excellent protective effect on the whole inner wall of the boiler.
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Description

technical field

[0001] The invention relates to a circulating fluidized bed boiler for antiwear and wear reduction, and belongs to the technical field of antiwear and antiwear for circulating fluidized bed boilers. Background technique

[0002] Using the two-phase flow of solid phase and gas phase, the solid material burned in the furnace will continue to boil and expand under the action of wind, some of the particles will be collected by the gas-solid separation device at the furnace outlet, and sent back to the furnace through the return device Repeated cycle combustion, the boiler of this combustion cycle process is called circulating fluidized bed boiler. Compared with traditional boilers, circulating fluidized bed boilers have the advantages of wide fuel adaptability, sufficient combustion, large load adjustment range, fast adjustment speed, high comprehensive utilization rate of ash and slag, and low emissions of sulfur dioxide and nitrogen oxides. Therefore, Has a go...

Claims

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