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Wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation

A supplementary combustion and gas burner technology, applied in the direction of combustion methods, lighting and heating equipment, combustion product treatment, etc., can solve the problems of boiler efficiency reduction, etc., and achieve the effect of simple installation, uniform distribution of velocity field and reasonable design

Pending Publication Date: 2021-03-09
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0005] In order to solve the problem of reduced boiler efficiency in the prior art, the present invention provides a wide-load denitrification system based on boiler deep peak shaving gas supplementary combustion heating flue gas

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  • Wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation
  • Wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation
  • Wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation

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Embodiment Construction

[0024] In order to make the purpose and technical solution of the present invention clearer and easier to understand. The present invention will be further described in detail below in conjunction with the drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular ori...

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Abstract

The invention discloses a wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation. The system comprises a fuel gas combustor, an economizer outlet horizontal flue and a denitration reactor, wherein the economizer outlet horizontal flue communicates with the denitration reactor, the gas burner is arranged on the horizontal section of the economizer outlet flue; and the gas burner internally comprises a gas burner primary air pipe and a gas burner secondary air pipe. The system is reasonable in design and simple in structure andcapable of flexibly and conveniently adjusting the temperature level of an inlet of the denitration reactor according to actual requirements, thus achieving the purposes of uniform distribution of a temperature field and a speed field behind a rectification grid of the denitration reactor, and has the characteristics of simple and convenient installation engineering and flexible arrangement of construction, so that the problem that the flue gas temperature for wide-load denitration is insufficient is fundamentally solved.

Description

technical field [0001] The invention belongs to the technical field of deep peak-shaving and wide-load denitrification of boilers, and specifically relates to a wide-load denitrification system based on boiler deep peak-shaving gas supplementary combustion heating flue gas. Background technique [0002] Whether the denitrification system can be put into operation normally under deep peak shaving and low load is the main problem faced by boilers participating in deep peak shaving. Based on the statistical results of the data and literature reports, when the coal-fired units operate at low load, the inlet flue gas temperature of the selective catalytic reduction (SCR) denitrification system decreases, and the flue gas temperature at the SCR inlet of some units does not meet the operating temperature requirements of the catalyst. , resulting in NOx emissions not meeting environmental protection requirements. [0003] The main idea of ​​the traditional boiler side transformatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/08B01D53/86B01D53/56
CPCB01D53/8625B01D53/8631B01D2258/0283F23J15/08F23J2215/10F23J2900/15081
Inventor 杜智华张喜来姚伟王桂芳杨忠灿周广钦屠竞毅孙军
Owner XIAN THERMAL POWER RES INST CO LTD
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