System and method for adjusting superheated steam temperature through coal-fired boiler desuperheating water
A technology for superheated steam and coal-fired boilers, which is applied in the system field of coal-fired boiler desuperheating water to adjust the temperature of superheated steam. It can solve the problems of extensive adjustment, accurate judgment of the overtemperature position and cause of the heating surface, and poor economy, and achieve reasonable adjustment. Effects of improving flexibility and economy, and reducing usage and frequency
Pending Publication Date: 2021-09-24
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology
The disadvantage is that the adjustment is extensive and the economy is poor
That is, there is no accurate judgment of the over-temperature position and cause of the heating surface through partitioning, and targeted adjustment measures are taken
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[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] refer to figure 1 , the coal-fired generating set reheat steam parameter adjustment system of the present invention comprises a low-temperature superh...
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The invention discloses a system and method for adjusting superheated steam temperature through coal-fired boiler desuperheating water. Superheated steam sequentially passes through low-temperature superheater inlet headers, low-temperature superheaters, low-temperature superheater outlet headers, platen superheater inlet headers, platen superheaters, platen superheater outlet headers, high-temperature superheater inlet headers, high-temperature superheaters and high-temperature superheater outlet headers in the flowing direction. Four groups of low-temperature superheaters and low-temperature superheaters are arranged along the width of a boiler; and four groups of platen superheaters and platen superheater outlet headers are arranged along the width of the boiler. Superheater first-stage desuperheating water is arranged between the low-temperature superheater outlet headers and the platen superheater inlet headers, and superheater second-stage desuperheating water is arranged between the platen superheater outlet headers and the high-temperature superheater inlet headers. According to the method and the system, rapid, flexible and economical adjustment of superheated steam parameters is achieved, an adjustment method that when the superheaters overheat, the desuperheating water is purely and extensively input is avoided, the using amount and frequency of the desuperheating water are effectively reduced, and the economical efficiency of unit operation is improved.
Description
technical field [0001] The invention belongs to the technical field of coal-fired generating sets, and in particular relates to a system and a method for regulating the temperature of superheated steam by desuperheating water of a coal-fired boiler. Background technique [0002] Affected by coal resources, most coal-fired generating units in China have varying degrees of actual coal types that deviate from the design conditions. Frequent changes in coal quality lead to changes in boiler combustion characteristics, causing such as partial combustion, overheating of the heating surface, and steam Problems such as difficult parameter adjustment cannot be solved through traditional combustion adjustment and optimization. Therefore, it is necessary to optimize the system of traditional coal-fired power generation units to adapt to the operating requirements of the new form. [0003] For the superheated steam desuperheating system of the current coal-fired generating units, whethe...
Claims
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IPC IPC(8): F22G5/12F22G3/00
CPCF22G5/12F22G3/00
Inventor 周凌宇刘辉聂鑫成汭珅陈罡解冰
Owner XIAN THERMAL POWER RES INST CO LTD