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In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer

A retro-reflection, optical device technology, applied in the field of internal combustion characteristics, which can solve the problems of limited practicability of traditional systems

Active Publication Date: 2015-03-25
正点技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the cost and complexity of optics and corresponding furnace perforations, conventional systems are of limited utility where it is desired to monitor (and possibly also control) a large number of combustion zones within a furnace

Method used

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  • In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer
  • In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer
  • In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer

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Embodiment Construction

[0043] Unless otherwise indicated, all numbers expressing numbers of elements, dimensions, reaction conditions, etc. used in the specification and claims are understood to be modified in all instances by the term "about".

[0044] In this application and claims, the use of the singular includes the plural unless specifically stated otherwise. Also, the use of "or" means "and / or" unless stated otherwise. Furthermore, use of the term "including" as well as other forms such as "includes" and "included" is not limiting. Likewise, terms such as "element" or "component" encompass both elements and components comprising one unit and elements and components comprising more than one unit, unless specifically stated otherwise.

[0045] US Patent No. 7,469,092, the entire contents of which is hereby incorporated herein, discloses a method and apparatus for monitoring and controlling a combustion process of the type that requires installation of tube bends in the walls of the boiler in o...

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Abstract

A method of monitoring combustion properties in an interior of a furnace is described. A beam of light is projected through a pitch optic including a pitch collimating lens residing outside the boiler interior. The pitch collimating lens projects the beam through a penetration into the boiler interior. The beam of light projected by the pitch collimating lens is reflected from at least one in-furnace retro-reflector, and received with a catch optic substantially identical to the pitch optic residing outside the boiler interior. The pitch optic and the catch optic may be embodied in the same pitch / catch optic. The pitch collimating lens may also be steered toward another of the at least one in-furnace retro-reflectors. Combustion properties may be calculated for each retro-reflector or based on retro-reflector zones within the furnace.

Description

technical field [0001] The present disclosure relates to methods and apparatus for measuring the combustion characteristics of the interior of a boiler or furnace, and more particularly, to methods and apparatus for measuring the combustion characteristics of a boiler or furnace using a retroreflector in combination with a steerable tunable diode laser absorption spectrometer. Method and apparatus for combustion characteristics in a furnace. Background technique [0002] US Patent No. 7,469,092 describes methods and apparatus for monitoring and controlling processes using a tunable diode laser absorption spectrometer (TDLAS). Briefly, the TDLAS method and apparatus involves directing a beam of light, which may be multiplexed beams of many different wavelengths, into a boiler or furnace combustion chamber to measure boiler or furnace combustion characteristics such as temperature and various combustion species including CO, CO 2 , O 2 and H 2 The concentration of O, variou...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/39F23N5/00F24H9/00
CPCF23M11/045F23N5/082F23N2229/00F23N2900/05005G01J3/021G01J3/0289G01J3/42G01N21/39G01N21/84G01N2021/399G02B5/122F23M20/00G01N2201/0612
Inventor 吉姆·豪厄尔贝纳德·帕特里克·马斯特森罗德·哈里斯大卫·吉尔特纳阿蒂略·乔布森迈克尔·约翰·埃斯蒂斯安德鲁·D·萨佩
Owner 正点技术有限公司
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