Circle-contacted coal fired boiler tube wall temperature global optimizing and debugging method

A technology for tube wall temperature and coal-fired boilers, which is applied in the control of combustion, combustion equipment, control systems, etc., can solve the problems of insufficient reheated steam temperature, overtemperature of the reheated steam tube wall, and high CO content in flue gas

Inactive Publication Date: 2019-06-28
SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for overall optimization and debugging of the tube wall temperature of a tangential coal-fired boiler, to solve the problem of high CO content in the flue gas under high load in the prior ar

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  • Circle-contacted coal fired boiler tube wall temperature global optimizing and debugging method

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and embodiment example, the present invention will be further described:

[0029] In this embodiment, the opposing coal-fired boiler unit is equipped with a safety instrumented system, hereinafter referred to as the SIS system, see the attached figure 1 As shown in the flow chart, the overall optimization and debugging method for the tube wall temperature of a tangential coal-fired boiler specifically includes the following steps:

[0030] S1. Under the high, medium and low load conditions of the unit, the differential test of the vertical swing angle position of the overburning air is carried out, and the best vertical swing angle position of the overburning air under different loads of the unit is obtained;

[0031] S2. On the basis of step S1, the operating oxygen content test is carried out for commonly used coal types, and the pipe wall temperature distribution diagrams of the heating surfaces of the water wall, panel ...

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Abstract

The invention relates to a circle-contacted coal fired boiler tube wall temperature global optimizing and debugging method. The method comprises the following steps: (S1) the burnout air vertical swing angle distinguishing testing is performed under high, medium and low loads of an unit to obtain optimal burnout air vertical swing angle positions of the unit under different loads; (S2) based on the step (S1), the operation oxygen quantity testing is performed on common coal types to obtain optimal operation oxygen quantity control values of the unit under different loads; and (S3) the coal mill combination testing is performed on the common coal types to obtain a coal mill combined operation mode with optimal tube wall temperature control. The method solves the problems of high CO contentin smoke of the unit under high load and insufficient reheated steam temperature caused by reheated steam tube wall overheating under each load, can effectively control the superheating pipe blastingproblem, and provides references to optimal adjustment of the tube wall temperature of the unit with the same type.

Description

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Claims

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Application Information

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Owner SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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