A real-time soft-sensing method for furnace slagging of power plant boiler
A power plant boiler, segmented technology, applied in the direction of boiler working status indication, lighting and heating equipment, control system, etc., can solve the problems that the power plant cannot meet the soot blowing and restrictions on the boiler furnace segmented segment
Active Publication Date: 2019-01-25
SOUTHEAST UNIV
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Problems solved by technology
Most of the soft-sensing methods for boiler furnace slagging monitoring in the current patent literature are to estimate the overall slagging situation of the furnace. Segmented soot blowing), the overall monitoring of furnace slagging cannot meet the needs of power plants for segmental soot blowing of boiler furnaces because it cannot reflect the slagging conditions in different sections of the furnace, and its application is limited to a certain extent
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[0082] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.
[0083] A real-time soft-sensing method for power plant boiler furnace slagging, such as figure 2 As shown, it mainly includes the following steps:
[0084] Step 1, according to the combustion properties, the furnace is divided into three slagging zones, the main combustion zone, the burnout zone and the heat exchange zone from bottom to top (such as figure 1 ), to collect relevant data on the furnace. Relevant data include boiler furnace structure and design param...
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The invention discloses a sectional real-time soft-measurement method of boiler furnace slagging of a power station. According to the method, based on not adding measurement points of boilers in a power station, boiler furnace structure parameters, as-fired coal quality data and furnace real-time operation parameters are collected, water-cooling-wall thermal effective coefficients in different segments of the furnace are taken as slagging monitor indexes, a furnace sectional slagging soft measurement calculation model is established based on the whole furnace and sectional heat transfer balance, visual data of real-time slagging condition in different segments of the furnace can be provided, and reference is provided to furnace sectional soot-blowing operation.
Description
technical field [0001] The invention relates to a real-time soft measurement method for slagging in a furnace chamber of a power station boiler, which belongs to the field of boiler operation parameter monitoring. In particular, it is a soft-sensing method for power plant boiler furnaces, which collects boiler operating data based on existing measuring points in the power plant, and uses a pre-established model to calculate real-time slagging conditions in the furnace. Background technique [0002] The furnace of a large power plant boiler is used as the main combustion space for fuel, and the temperature of the flame center can reach 1400°C to 1700°C. Once the slagging starts, a thicker and thicker slag layer will be formed. If it is not cleaned up in time, the heat transfer performance of the boiler will drop sharply, and the boiler efficiency will decrease. In severe cases, the boiler may be shut down, which will cause safety accidents and cause huge economic loss. [0...
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IPC IPC(8): F22B37/38F22B35/00
CPCF22B35/00F22B37/38
Inventor 黄亚继徐力刚邹磊岳峻峰王健杨钊
Owner SOUTHEAST UNIV