A method and a device for measuring, by photo-spectrometry,...

G - Physics – 01 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 21/25 (2006.01) G01N 21/33 (2006.01)

Patent

CA 2385599

The invention relates to a method for measuring the concentration of harmful gases in the flue gases through a heat-producing plant that comprises a combustion space (3) and a device (5) located downstream of said combustion space, said device (5) comprising tubes, through which for instance water, steam or air may pass in order to be heated by heat transfer from flue gases formed during the combustion. In a region near the tube device (5), at least one beam (11) of ultraviolet light is emitted from a light emitter (7') at one side of a flue gas duct (4) to a light receiver (7'') located at the opposite side of said duct, which light emitter (7'') is connected to a spectrometer (13) cooperating with a computer unit (14), in which spectrometer the light is divided spectrally. This spectrometer is calibrated for registering the spectral intensity distribution of the light within the wavelength range of 200 to 310 nanometers, in order to substantially continuously detect in situ the concentration of gaseous metals and/or metal chlorides in the flue gases during the operation of the plant.

La présente invention concerne un procédé destiné à mesurer la concentration de gaz néfastes dans les fumées passant à travers une unité de production de chaleur qui comporte un espace de combustion (3) et un dispositif (5) disposé en aval de cet espace, ce dispositif (5) comprenant des tubes, au travers desquels, par exemple, peut passer de l'eau, de la vapeur ou de l'air de façon à ce qu'il soit chauffé par un transfert de chaleur à partir des fumées formées durant la combustion. Dans une région proche du dispositif de tubes (5), au moins un faisceau (11) de rayonnement ultraviolet est émis à partir d'une source de rayonnement (7') placée sur un côté d'un conduit de fumées (4) vers un récepteur de rayonnement (7'') disposé sur le côté opposé du conduit. L'émetteur de rayonnement (7') est connectée à un spectromètre (13) relié à un ordinateur (14), le rayonnement subissant dans le spectromètre une division spectrale. Ce spectromètre est étalonné afin d'enregistrer la distribution d'intensité spectrale du rayonnement dans le domaine de longueurs d'onde de 200 à 310 nanomètres, de façon à détecter, in situ, de manière sensiblement continue la concentration de métaux sous forme gazeuse et/ou de chlorures métalliques dans les fumées lors du fonctionnement de l'unité.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

A method and a device for measuring, by photo-spectrometry,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A method and a device for measuring, by photo-spectrometry,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A method and a device for measuring, by photo-spectrometry,... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2021584

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.