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On-line calculation method for desulfurization efficiency of circulating fluidized bed boiler

A circulating fluidized bed and desulfurization efficiency technology, applied in the field of electric power, can solve problems such as online calculation of circulating fluidized bed boiler desulfurization efficiency

Inactive Publication Date: 2010-07-21
贵州电力调度通信局
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Problems solved by technology

[0003] The object of the present invention is to provide an online calculation method for the desulfurization efficiency of a circulating fluidized bed boiler. The online calculation method for the desulfurization efficiency of a circulating fluidized bed boiler should solve the problem of circulating fluidized bed boilers with no relevant standards and methods in the prior art. Technical Problems of Online Calculation of Desulfurization Efficiency of Fluidized Bed Boiler

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  • On-line calculation method for desulfurization efficiency of circulating fluidized bed boiler

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[0045] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments.

[0046] 1) Calculation of original emission concentration

[0047] Since the CFB boiler adopts in-furnace desulfurization, there is no imported SO 2 Measuring point. Due to the low-temperature combustion characteristics of CFB boilers, the degree of self-desulfurization of coal is also greater than that of pulverized coal boilers. There are many factors affecting the self-desulfurization efficiency of coal. The self-desulfurization efficiency of CFB boilers is 10-40% or more. At present, there is no reliable calculation formula and data, and it is generally determined through experiments for specific coal types.

[0048] Therefore, it is recommended that the entire CFB boiler unit be used as desulfurization equipment, using SO 2 The theoretical production concentration is used as the inlet emission concentration of the CFB boiler, so th...

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Abstract

The invention provides an on-line calculation method for desulfurization efficiency of a circulating fluidized bed boiler, comprising a process of calculating original discharge concentration of the circulating fluidized bed boiler, a process of calculating the dry flue gas volumes under 6% of O2 in the circulating fluidized bed boiler, a process of calculating the self-desulfurization efficiency in the circulating fluidized bed boiler, a process of calculating the desulfurization efficiency in the circulating fluidized bed boiler and an on-line monitoring process of whether the desulfurization system of the circulating fluidized bed boiler is put into operation or not. The invention belongs to the electric power field, relating to a desulfurization technique. Compared with the prior art, the invention has significant effect. By the calculation method, the desulfurization efficiency of SO2 in the circulating fluidized bed boiler can be more accurately calculated on line; and by monitoring the desulfurization efficiency of SO2 in the circulating fluidized bed boiler, the discharge of SO2 can be further reduced and the pollution to atmosphere is relieved.

Description

technical field [0001] The invention belongs to the field of electric power and relates to a desulfurization technology, in particular to an online calculation method for the desulfurization efficiency of a circulating fluidized bed boiler. Background technique [0002] At present, there are no relevant standards and methods to assess and calculate the desulfurization power of circulating fluidized bed (CFB) boilers. The desulfurization power assessment needs to collect the actual SO2 of the unit online 2 Emission concentration and desulfurization efficiency of online computer group. Due to the characteristics of desulfurization in the CFB boiler furnace, it is necessary to determine how to calculate the desulfurization efficiency of the CFB boiler, and at the same time, it is necessary to assist in judging the accuracy and reliability of the desulfurization efficiency. Contents of the invention [0003] The purpose of the present invention is to provide an online calcul...

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Application Information

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IPC IPC(8): B01D53/50F23C10/02F23C10/28
Inventor 郭翔李颖杰黄育松覃海
Owner 贵州电力调度通信局
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