US3888123A - Apparatus for taking gas samples in shaft furnaces - Google Patents

Apparatus for taking gas samples in shaft furnaces Download PDF

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Publication number
US3888123A
US3888123A US391361A US39136173A US3888123A US 3888123 A US3888123 A US 3888123A US 391361 A US391361 A US 391361A US 39136173 A US39136173 A US 39136173A US 3888123 A US3888123 A US 3888123A
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United States
Prior art keywords
probe
gas
furnace
sampling pipes
pipes
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Expired - Lifetime
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US391361A
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English (en)
Inventor
Ernest P Kuntziger
Nicolas Lemmens
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Paul Wurth SA
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Anciens Etablissements Paul Wurth SA
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces

Definitions

  • the invention relates to an apparatus for taking gas samples in shaft furnaces, particularly blast furnaces, which in the inoperative position is located outside the blast furnace and which is introduced into the blast fur nacc charge for taking gas samples (operating position).
  • the prior art movable tubular probes comprise a probe support which is arranged with the end thereof projecting into the blast furnace.
  • the reduction gas is sucked into the probe duct and is passed eg to a collecting tank arranged outside the blast fur nace for subsequent chemical analysis.
  • a drivearranged outside the blast furnace moves the probe horizontally into or out of the blast furnace.
  • the probe is moved stepwise to the different points.
  • the known introductible probes generally have relatively large diameters in order to increase their resistance to high temperature and buckling stresses. As a result the same disadvantages occur at least during the measurements as with fixed probes the furnace charge is disturbed and an inaccurate sampling of the reduction gases results.
  • the apparently most appropriate known construction comprises a probe for taking gas samples which may be moved into and out of the charge of a shaft furnace, particularly a blast furnace. in the radial direction which is provided with a plurality of removal apertures along its longitudinal axis in each case connected with a pipe which permits the removal of gas samples at sew eral points over the furnace diameter.
  • Such probes are for example described in U.S. Pat. No. 3,240,069 and German DAS 1,533,829. They permit the simultaneous removal of gas samples at several points of the furnace cross-section which considerably reduces the dwell time of the probe in the furnace for measurement purposes.
  • the present invention relates to this type of probe.
  • a further object of the present invention is to avoid the disadvantages of the existing installations to the greatest possible extent particularly relative to considerably reducing the total dwell time of the probe in the furnace by combining an effective cooling with a high rigidity of the probe.
  • German DAS 1,533,829 the probe is given a rotary movement on introduction or the outer end of the probe is mounted on guide rollers and its displacement takes place by means of a hydraulic cylinder piston drive.
  • the present invention relates to a gas removal device or probe including a vibrator which acts upon the same during the displacement movement of the probe.
  • the resultant vibration during liner motion considerably facilitates the introduction and removal of the probe relative to the furnace charge and considerably reduces the dwell time of the probe in the furnace for the purpose of taking gas samples.
  • a preferred embodiment of the invention further involves a special construction which has an effective cooling and, despite the limited size, a high rigidity.
  • the reduction in size without sacrificing rigidity or cooling capacity is achieved by arranging a plurality of furnace gas sampling pipes within an outer cylindrical protective tube around a central pipe, whereby these sampling pipe lines are connected with the apertures formed in the casing of the outer protective tube in order to permit the simultaneous sampling of gas at several points along the probe. Water circulation for cooling the probe is maintained in the central pipe and in the free space between the central pipe and the outer protective tube not occupied by the pipe lines.
  • the construction according to the invention which comprises two concentrically arranged pipes whose interspace is substantially filled by a plurality of pipe lines which supply the gas samples to an analyser. ensures the rigidity of the probe with smallest possible dimensions. The movement of the probe into the furnace charge is thus further considerably facilitated.
  • FIG. 1 is a schematic side elevation view of a portion of a shaft furnace including a sampling probe installation in accordance with the present invention
  • FIG. 2 is a cross sectional view showing a complete array of gas entry ports in a probe in accordance with a first embodiment of the invention, FIG. 2 being taken at an angle along the entire length of the probe and the gas entry ports actually being longitudinally spaced along the probe;
  • FIG. 3 is a cross sectional side elevation view of a single gas supply pipe of the probe of FIG. 2:
  • FIG. 4 is a cross sectional view of the free end of a second embodiment of a probe in accordance with the invention.
  • FIG. I which represents a longitudinal section through the probe installation
  • a probe 2 is mounted so as to be horizontally introduced into and withdrawn from the blast furnace 4.
  • the probe 2 In the inoperative position (withdrawn position) the probe 2 is arranged on a sliding or guide block 6 on a working platform.
  • a servo motor 8 On the end of guide block 6 remote from blast furnace 4 is attached a servo motor 8 which is connected with probe 2 via, for example. an endless chain (not shown in FIG. I).
  • Motor 8, via the chain or other transmission means, delivers longitudinal force to move probe 2 in the horizontal direction.
  • the probe is provided with a pneumatic or hydraulically operated vibrator 10.
  • the vibrations produced are superimposed on the tension or pressure exerted by servo-motor 8 on probe 2 and substantially aid the movement of probe 2 into the blast furnace charge.
  • a cut off valve 12 on the blast furnace wall 14 is opened to introduce the probe 2 and is closed with the probe 2 in the inoperative position.
  • the valve 12 is provided with a labyrinth seal device.
  • probe 2 is provided with a certain number of apertures or gas entry ports 18, 20, 22, 24, 26, 28, 30, 32 and 34 on its cylindrical outer casing 16.
  • the number of apertures I8 to 34 corresponds to the desired number of gas samples to be taken at the various blast furnace radii.
  • a gas distribution pipe 36, 38, 40, 42, 44. 46, 48, 50, 52 is connected to each aperture 18, 20, 22, 24, 26, 28, 30, 32 and 34 to each aperture 18, 20, 22, 24, 26, 28, 30, 32 and 34.
  • gas distribution pipes 36 to 52 are distributed over the inside of the outer casing I6 and are held in their particular position by means of a supporting tube 54 located centrally and concentrically to outer casing 16. As all the gas distri' bution tubes 36 to 52 of the embodiment of FIG. 2 run parallel to the outer casing 16 or supporting tube 54, apertures 18 to 32 are longitudinally and angularly dis placed over outer casing 16 and are perpendicular to the appropriate gas distribution pipes 36 to 52.
  • All the gas supply pipes 36 to 52 are connected to a distributor system 56 located outside blast furnace 4 (FIG. I). from which distributor system 56 the different gas samples are simultaneously supplied via separate pipe lines to collecting tanks.
  • probe 2 is water cooled.
  • the cooling water flow up to the tip of the probe may take place through hollow chamber 58 (FIGS. 2 3 and 4) which is bounded by gas distribution pipes 36 to 52, outer casing 16 and supporting tube 54.
  • the cooling water return flow takes place through the inside 60 of support ing tube 54.
  • gas entry apertures of gas distribution pipes 36 to 52 are angularly distributed over the complete periphcry of the protective casing 16.
  • the gas inlet apertures are only longitudinally displaced and not an gularly displaced.
  • the gas distribution pipes 36 to 52 are twisted around the supporting tube 54.
  • the gas distribution pipes of the FIG. 4 embodiment will, of course, be parallel at any given point along the length of the probe and the maximum twist about the support tube 54 imparted to any distribution pipe will be less than 360.
  • FIG. 2 embodiment which comprises the straight gas distribution pipes has the advantage that it can be produced in a very simple manner.
  • all the gas inlet apertures are in the same plane.
  • FIG. 3 represents a longitudinal section through one of the gas distributing pipes and through the appropriate inlet aperture 18.
  • a gas distribution pipe 36 terminates at a point adjacent to the outwardly disposed edge of inlet aperture 18.
  • a thermocouple 62 around which the gas flows is provided in gas distribution pipe 36. A signal commensurate with temperature as provided by the thermocouple is passed on to an indicator. Due to the relatively short dwell time of probe 2 in blast furnace 4 the thermocouple 62 must have a rapid response time thermocouples or other temperature sensors have been omitted from FIGS. 2
  • a gas pressure indicator or recording device can be connected to each individual gas distribution pipe.
  • the chemical composition. temperature and pressure of the reduction gas may be measured. These measured values can be used for controlling the complete blast furnace process.
  • valve 12 Prior to the introduction of probe 2 into blast furnace 4 valve 12 is. for ex ample. hydraulically opened.
  • compressed air is introduced through distributor valve 56 into gas distribution pipes 36 to 52 for keeping free the apertures during the introduction process of the probe.
  • the introduction of the probe 2 into its operating position takes a maximum of l seconds.
  • the compressed air supply to the gas distribution pipes is now disconnected and reduction gas now flows through the gas distribution pipes to distributor valve 56.
  • this reduction gas compressed air mixture is first blown out into the atmosphere before the reduction gas is passed into the avail able collecting tanks or analyzers.
  • the external diameter of the outer casing 16 can be limited in one embodiment to 60.3 mm. The limited probe diameter does not disturb the reduction gas picture and does not falsify the measured values.
  • Apparatus for taking gas samples from a plurality of locations within the charge burden on the hearth of a shaft furnace comprising:
  • said probe means including an elongated probe adapted to be introduced into and withdrawn from the furnace charge via a port in the furnace wall.
  • said elongated probe including a central supporting tube and a plurality of rigid gas sampling pipes symmetrically arranged around said supporting tube.
  • said gas sampling pipes each being provided with a gas entry aperture.
  • said gas entry apertures being individually displaced along the longitudinal axis of the probe.
  • said probe further comprising a tubular outer sheath surrounding said gas sampling pipes. said sheath being concentric with said central supporting tube and being provided with a plurality of gas entry ports individually displaced along the longitudinal axis of the probe.
  • said gas entry ports being individually coupled to respective of said gas entry apertures in said gas sampling pipes, said sheath and central supporting 5 tube defining an annular housing for said gas sampling pipes and a path for coolant flow in the free interspace between said sampling pipes;
  • vibrator means coupled to said probe means for superimposing vibratory movement on to the longitu dinal force during introduction of the probe into the furnace charge.
  • temperature sensing means disposed in at least some of said gas sampling pipes for indicating the temperature of the gas entering said probe means through the gas entry port coupled to the gas entry aperture in the sampling pipe in which the temper ature sensing means is installed.
  • the apparatus of claim 2 further comprising: temperature sensing means disposed in at least some of said gas sampling pipes for indicating the temperature of the gas entering said probe means through the gas entry port coupled to the gas entry aperture in the sampling pipe in which the temperature sensing means is installed. 7. The apparatus of claim 6 wherein all of said sampling pipes are oriented parallely to one another.
  • a method for taking gas samples in a shaft furnace which comprises the steps of:
  • said probe being characterized by a plurality of spacially longitudinally displaced gas entry ports. each of said ports being coupled to a separate gas sampling pipe;

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Blast Furnaces (AREA)
  • Sampling And Sample Adjustment (AREA)
US391361A 1972-09-05 1973-08-24 Apparatus for taking gas samples in shaft furnaces Expired - Lifetime US3888123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU65998 1972-09-05

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US (1) US3888123A (de)
JP (1) JPS5757526B2 (de)
AT (1) AT335489B (de)
BE (1) BE804410A (de)
CA (1) CA997943A (de)
DE (1) DE2343470C2 (de)
ES (1) ES418235A1 (de)
FR (1) FR2198629A5 (de)
GB (1) GB1431401A (de)
IT (1) IT998535B (de)
LU (1) LU65998A1 (de)
ZA (1) ZA735863B (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044612A (en) * 1977-01-14 1977-08-30 Koppers Company, Inc. Probe for obtaining gas samples from a shaft furnace
US4061036A (en) * 1975-07-24 1977-12-06 S.A. Des Anciens Etablissements Paul Wurth Device for the extraction of gaseous samples and for thermal measurement above the burden of a shaft furnace
US4361027A (en) * 1979-08-25 1982-11-30 Rudi Schmitt Measuring apparatus for the quantitative determination of a component of a gas mixture
US4403516A (en) * 1981-01-23 1983-09-13 Paul Wurth S.A. Furnace probe
US4471664A (en) * 1981-01-23 1984-09-18 Paul Wurth S.A. Support for a blast furnace probe
US4511264A (en) * 1983-04-11 1985-04-16 Raymond Kaiser Engineers Inc. Gas temperature monitoring device
DE3803352A1 (de) * 1988-02-05 1989-08-17 Kessler & Luch Gmbh Schlitzsonde
US5146796A (en) * 1990-03-07 1992-09-15 Paul Wurth S.A. Probe for taking gas samples and heat measurements above the charging surface of a shaft furnace
US5435196A (en) * 1993-12-22 1995-07-25 Heraeus Electro-Nite International N.V Immersion probe for collecting slag samples
US5488875A (en) * 1992-03-27 1996-02-06 Adair; Bob A. Emissions testing equipment support
US5703299A (en) * 1996-06-21 1997-12-30 Corona Energy Partners, Ltd. Exhaust stack sensor probe
US6516676B1 (en) * 2000-03-29 2003-02-11 Robert Lee Mullowney, Jr. Airborne emissions monitoring probe
US20030064519A1 (en) * 2000-02-11 2003-04-03 Andre Fuegier Method and apparatus for determining the progress of a chemical reaction in a furnace and for controlling the reaction
US20040114665A1 (en) * 2002-12-12 2004-06-17 Sun Park Cantilevered thermocouple rake
US7381383B1 (en) * 1998-05-13 2008-06-03 Hoei Shokai Co., Ltd. Treating apparatus, treating method and method of treating soil
US7624654B1 (en) 2006-08-10 2009-12-01 Airflow Sciences Leasing, LLC Automated system and method for probe measurement of stack gas flow properties
CN103114165A (zh) * 2013-03-14 2013-05-22 济钢集团有限公司 一种高炉煤气取样测温装置
WO2020099908A1 (en) * 2018-11-13 2020-05-22 Arcelormittal Direct reduction shaft furnace with probe for interior gas analysis
US10709806B2 (en) 2015-07-22 2020-07-14 Everyone's Earth Inc. Biodegradable absorbent articles

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5162104A (ja) * 1974-11-28 1976-05-29 Nippon Kokan Kk Korosogyoho
JPS5433927Y2 (de) * 1975-10-30 1979-10-18
JPS5914714Y2 (ja) * 1978-04-26 1984-04-28 株式会社神戸製鋼所 立型炉の炉内試料採取装置
JPS5644704A (en) * 1979-09-18 1981-04-24 Ishikawajima Harima Heavy Ind Co Ltd Method of decreasing load of lance of gas sampling device
LU87693A1 (fr) * 1990-03-07 1991-10-08 Wurth Paul Sa Sonde de prise d'echantillons gazeux et de mesures thermiques dans un four a cuve
DE4421807A1 (de) * 1994-06-22 1996-01-04 Abb Management Ag Emissionssonde zur Entnahme von Abgas aus der Brennkammer einer Gasturbine sowie Verfahren zur Herstellung und Anwendung derselben
DE102006019723B4 (de) * 2006-03-31 2014-12-24 Alstom Technology Ltd. Messsondensystem, Anordnung und Verfahren zur Erfassung von Abgasparametern stromabwärts einer Gasturbine
DE102006058286B4 (de) * 2006-12-08 2009-05-14 Technische Universität München Gasentnahmeventil und dessen Anordnung in einer Brennkammer einer Verbrennungskraftmaschine sowie Verfahren zum Betrieb eines derartigen Gasentnahmeventils
DE102021124693A1 (de) 2021-09-23 2023-03-23 Sick Ag Messgassonde, Messsystem und Verfahren zur Messung von gasförmigen Rauchgasbestandteilen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3085435A (en) * 1960-03-15 1963-04-16 United States Steel Corp Method and apparatus for determining conditions at spaced points within a chamber
US3130584A (en) * 1961-02-14 1964-04-28 United States Steel Corp Blast furnace probe
US3457787A (en) * 1965-08-17 1969-07-29 Beteiligungs & Patentverw Gmbh Method of and apparatus for the automatic observation and regeneration of devices for the sampling of waste gases
US3596719A (en) * 1969-07-07 1971-08-03 Stephen S Koziski Earth core sampler
US3646972A (en) * 1970-02-27 1972-03-07 Kabel Metallwerke Ghh Multitubing system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3085435A (en) * 1960-03-15 1963-04-16 United States Steel Corp Method and apparatus for determining conditions at spaced points within a chamber
US3130584A (en) * 1961-02-14 1964-04-28 United States Steel Corp Blast furnace probe
US3457787A (en) * 1965-08-17 1969-07-29 Beteiligungs & Patentverw Gmbh Method of and apparatus for the automatic observation and regeneration of devices for the sampling of waste gases
US3596719A (en) * 1969-07-07 1971-08-03 Stephen S Koziski Earth core sampler
US3646972A (en) * 1970-02-27 1972-03-07 Kabel Metallwerke Ghh Multitubing system

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061036A (en) * 1975-07-24 1977-12-06 S.A. Des Anciens Etablissements Paul Wurth Device for the extraction of gaseous samples and for thermal measurement above the burden of a shaft furnace
US4044612A (en) * 1977-01-14 1977-08-30 Koppers Company, Inc. Probe for obtaining gas samples from a shaft furnace
DE2751727A1 (de) * 1977-01-14 1978-07-20 Koppers Co Inc Sonde zur gewinnung von gasproben aus einem schachtofen
US4361027A (en) * 1979-08-25 1982-11-30 Rudi Schmitt Measuring apparatus for the quantitative determination of a component of a gas mixture
US4403516A (en) * 1981-01-23 1983-09-13 Paul Wurth S.A. Furnace probe
US4471664A (en) * 1981-01-23 1984-09-18 Paul Wurth S.A. Support for a blast furnace probe
US4511264A (en) * 1983-04-11 1985-04-16 Raymond Kaiser Engineers Inc. Gas temperature monitoring device
DE3803352A1 (de) * 1988-02-05 1989-08-17 Kessler & Luch Gmbh Schlitzsonde
US5146796A (en) * 1990-03-07 1992-09-15 Paul Wurth S.A. Probe for taking gas samples and heat measurements above the charging surface of a shaft furnace
US5488875A (en) * 1992-03-27 1996-02-06 Adair; Bob A. Emissions testing equipment support
US5435196A (en) * 1993-12-22 1995-07-25 Heraeus Electro-Nite International N.V Immersion probe for collecting slag samples
US5703299A (en) * 1996-06-21 1997-12-30 Corona Energy Partners, Ltd. Exhaust stack sensor probe
US7381383B1 (en) * 1998-05-13 2008-06-03 Hoei Shokai Co., Ltd. Treating apparatus, treating method and method of treating soil
US20090005630A1 (en) * 1998-05-13 2009-01-01 Hoei Shokai Co., Ltd Treatment method and soil treatment method
US20030064519A1 (en) * 2000-02-11 2003-04-03 Andre Fuegier Method and apparatus for determining the progress of a chemical reaction in a furnace and for controlling the reaction
US7374940B2 (en) * 2000-02-11 2008-05-20 Societe Franco-Belge De Fabrication De Combustible-Fbfc Method and apparatus for determining the progress of a uranium oxyfluoride conversion reaction in a furnace and for controlling the reaction
US6516676B1 (en) * 2000-03-29 2003-02-11 Robert Lee Mullowney, Jr. Airborne emissions monitoring probe
US20040114665A1 (en) * 2002-12-12 2004-06-17 Sun Park Cantilevered thermocouple rake
WO2005017473A2 (en) * 2002-12-12 2005-02-24 Ametek, Inc. Cantilevered thermocouple rake
WO2005017473A3 (en) * 2002-12-12 2005-06-16 Ametek Inc Cantilevered thermocouple rake
US7624654B1 (en) 2006-08-10 2009-12-01 Airflow Sciences Leasing, LLC Automated system and method for probe measurement of stack gas flow properties
CN103114165A (zh) * 2013-03-14 2013-05-22 济钢集团有限公司 一种高炉煤气取样测温装置
US10709806B2 (en) 2015-07-22 2020-07-14 Everyone's Earth Inc. Biodegradable absorbent articles
WO2020099908A1 (en) * 2018-11-13 2020-05-22 Arcelormittal Direct reduction shaft furnace with probe for interior gas analysis

Also Published As

Publication number Publication date
FR2198629A5 (de) 1974-03-29
AT335489B (de) 1977-03-10
LU65998A1 (de) 1973-01-17
BE804410A (fr) 1974-01-02
ATA730873A (de) 1976-07-15
CA997943A (en) 1976-10-05
ZA735863B (en) 1974-09-25
DE2343470C2 (de) 1984-03-22
IT998535B (it) 1976-02-20
GB1431401A (en) 1976-04-07
DE2343470A1 (de) 1974-03-14
ES418235A1 (es) 1976-02-16
AU5998673A (en) 1975-03-06
JPS5757526B2 (de) 1982-12-04
JPS49101093A (de) 1974-09-25

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