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Boiler high-temperature smoke recirculation FGR butterfly valve control system

A high-temperature flue gas and control system technology, applied in the field of boiler combustion, can solve the problems of nitrogen oxide emissions that cannot meet the requirements, and that the flue gas emissions cannot be controlled within a reasonable range.

Pending Publication Date: 2019-10-01
杨龙 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The nitrogen oxide emission of boilers currently used cannot meet the requirements. In the existing technology, although relevant control systems have been developed to control the emission of boiler flue gas, the emission of flue gas cannot be controlled within a reasonable range.

Method used

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  • Boiler high-temperature smoke recirculation FGR butterfly valve control system
  • Boiler high-temperature smoke recirculation FGR butterfly valve control system
  • Boiler high-temperature smoke recirculation FGR butterfly valve control system

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0025] The embodiment of the present invention discloses a boiler high-temperature flue gas recirculation FGR butterfly valve control system, such as figure 1 — image 3 As shown, it includes: boiler 1, flue gas return pipe 2, NDS sensor 3, FGR cycle control device 4, burner 5, flue gas automatic butterfly valve 6, condensate separator 7, control baffle 8, natural gas delivery pipe 9, The condensed water collection pipe 10 and the chimney 14, the NDS sensor 3...

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Abstract

The invention discloses a boiler high-temperature smoke recirculation FGR butterfly valve control system comprising a boiler, a smoke return pipe, an NDS sensor, an FGR circulation control device, a burner and a smoke automatic butterfly valve. The NDS sensor is arranged at the front end of a smoke discharge pipe of a boiler. The tail end of the smoke discharge pipe communicates with the smoke return pipe and a chimney. The smoke return pipe communicates with a combustor of the boiler through the burner and is provided with the smoke automatic butterfly valve. The NDS sensor and the smoke automatic butterfly valve are both connected with the FGR circulation control device. Through the boiler high-temperature smoke recirculation FGR butterfly valve control system, flow of outside circulation high-temperature smoke on the boiler can be controlled automatically, and the effect of low-nitrogen discharge of boiler tail gas is achieved.

Description

technical field [0001] The invention relates to the technical field of boiler combustion, and more specifically relates to a boiler high-temperature flue gas recirculation FGR butterfly valve control system. Background technique [0002] Nitrogen oxides are the main source of acid rain, greenhouse effect and photochemical smog, which have seriously affected people's living environment and become the focus of attention. Among them, nearly half of the total NOx emissions come from thermal power plants. [0003] The nitrogen oxide emission of the currently used boilers cannot meet the requirements. In the prior art, although a related control system has been developed to control the emission of boiler flue gas, the emission of flue gas cannot be controlled within a reasonable range. [0004] Therefore, how to provide a control system capable of maintaining the flue gas emission of the boiler within a certain range is an urgent problem to be solved by those skilled in the art. ...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K37/00G01N33/00F23C9/06
CPCF16K1/221F16K37/005G01N33/0004F23C9/06
Inventor 杨龙济英伟陈涛
Owner 杨龙
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