Method and system for confirming optimum oxygen content of coal-fired boiler

A technology for coal-fired boilers and oxygen content, which is applied in the direction of combustion methods, combustion control, and fuel supply adjustments, and can solve problems such as the difficulty of accurate optimal oxygen content to specific values.
CN111981506AActive Publication Date: 2020-11-24JIANGSU FRONTIER ELECTRIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU FRONTIER ELECTRIC TECH
Publication Date
2020-11-24

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Abstract

The invention discloses a method and a system for confirming optimum oxygen content of a coal-fired boiler. The method comprises the following steps of establishing a function expression formula of boiler efficiency relative to oxygen content; and calculating to-be-solved coefficients in the function expression formula through test determination data to obtain the optimum oxygen content. The specific value of the optimum oxygen content of the boiler which operates in a full-load stage can be positioned precisely, and the operating economical benefit of a unit is improved.
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Description

technical field

[0001] The invention relates to a method and system for confirming the optimum oxygen content of a coal-fired boiler, belonging to the field of thermal power generation. Background technique

[0002] Oxygen content in flue gas is an important monitoring parameter for the operation of coal-fired units. It can directly reflect the quality of combustion in the furnace. Changes in oxygen content will cause changes in boiler efficiency, auxiliary equipment power consumption, and steam temperature. Therefore, a reasonable amount of oxygen is of great significance to control the combustion process and achieve safe and efficient combustion.

[0003] With the gradual normalization of deep peak regulation of thermal power units, the units will frequently operate in the low-to-medium load range, and the oxygen volume range that operators can accurately control is generally in the rated load and high-load ranges. The control of oxygen volume in the low-to-medium load ran...

Claims

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