Method for rapidly adjusting temperature of reheat steam

A reheating steam and quick adjustment technology, which is applied in the control of superheated temperature, steam superheating, steam generation, etc., can solve the problems of untimely negative tracking adjustment, poor sensitivity, unfavorable unit load change and coal type adaptability, etc. To achieve the effect of improving the reaction speed and adaptability, improving the sensitivity, and benefiting the adaptability of coal types

Pending Publication Date: 2021-05-28
HUANENG POWER INTERNATIONAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The change of reheat steam temperature is not timely and sensitive to the negative tracking adjustment of the unit operation, which is not conducive to the change of unit load and the adaptability of coal types

Method used

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  • Method for rapidly adjusting temperature of reheat steam
  • Method for rapidly adjusting temperature of reheat steam
  • Method for rapidly adjusting temperature of reheat steam

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Embodiment Construction

[0028] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Refer to the attached Figure 1-7 The shown method for quickly adjusting the temperature of reheated steam includes a low-temperature reheater, the outlet of the low-temperature reheater is a single header, and one side of the low-temperature reheater is provided with a high-temperature reheater, and the high-temperature reheater The inlet and outlet of the reheater are arranged with doub...

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Abstract

The invention discloses a method for rapidly adjusting temperature of reheated steam, and belongs to the technical field of thermal power generation. The method for rapidly adjusting the temperature of the reheated steam comprises a low-temperature reheater, wherein an outlet of the low-temperature reheater is a single header, a high-temperature reheater is arranged on one side of the low-temperature reheater, and an inlet and an outlet of the high-temperature reheater are arranged in a double header mode; a connecting guide pipe communicates between the low-temperature reheater and the high-temperature reheater, and a temperature reducing device is installed on the connecting guide pipe. The method adapts to the characteristics of variability of combustion coal types and diversity of load changes of an existing boiler unit, wall temperature of the high-temperature reheater can be adjusted in time after a desuperheater is additionally arranged between the low-temperature reheater and the high-temperature reheater from aspects of operation stability, safety and economy of a boiler,.the sensitivity of unit operation load to steam temperature change is improved, unit load change and coal type adaptability are facilitated, and meanwhile response speed and adaptability of a unit to deep peak regulation and a tip peak are improved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a method for quickly adjusting the temperature of reheated steam. Background technique [0002] The domestic 600 MW ultra-supercritical unit, the boiler model is HG-1795 / 26.15-YM1, is an ultra-supercritical once-through boiler with variable pressure operation, adopts П-type layout, single furnace, low-NOx main burner staged combustion technology and MACT type low nitrogen oxides staged air supply combustion system, reverse cut garden combustion method, internal thread tube vertical rising membrane water wall, circulating pump start system, one-time intermediate reheating, temperature adjustment method except coal-water ratio, It also adopts methods such as flue gas distribution baffle, burner swing, and three-stage desuperheating water adjustment. [0003] The furnace of the boiler is composed of vertical tube-membrane water-cooled walls. The upper and lower par...

Claims

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Application Information

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IPC IPC(8): F22G5/12
CPCF22G5/123
Inventor 孟祥生张忠华郑全孙永军裴福玲刘光旭冯鑫赵久特王德琦段克迪
Owner HUANENG POWER INTERNATIONAL
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