US3517557A - Device for sampling hot gaseous mixtures containing condensables - Google Patents

Device for sampling hot gaseous mixtures containing condensables Download PDF

Info

Publication number
US3517557A
US3517557A US779514A US3517557DA US3517557A US 3517557 A US3517557 A US 3517557A US 779514 A US779514 A US 779514A US 3517557D A US3517557D A US 3517557DA US 3517557 A US3517557 A US 3517557A
Authority
US
United States
Prior art keywords
sampling
sampler
valve
tube
gaseous mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US779514A
Other languages
English (en)
Inventor
Camille Granger
Marc Demeure
Michel Bruder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naphtachimie SA
Original Assignee
Naphtachimie SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naphtachimie SA filed Critical Naphtachimie SA
Application granted granted Critical
Publication of US3517557A publication Critical patent/US3517557A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
    • 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
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
    • G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)

Definitions

  • This invention relates to a device for taking samples of a circulating gaseous mixture containing readily condensable components and more particularly to a device for the discontinuous sampling of gaseous mixtures of the type issuing at high temperature from thermal cracking ovens.
  • the operation of taking samples from gaseous mixtures of this nature represents a diflicult problem.
  • the sampling is addressed to the taking of gaseous mixtures circulating at high temperatures, such as of the order of 400 C. and under a pressure generally less than 1 kg./ sq. cm., in which the gaseous mixtures are made up of water vapor, light hydrocarbons and heavy oils, tars and carbon, all of which are easily condensable, consequently entailing the danger of blocking the pipes of the sampling device.
  • samples may be taken from gaseous mixtures issuing from cracking ovens by processes which generally comprise cooling the samples by washing with water in order to eliminate the easily condensable fractions as soon as the samples have been drawn off.
  • This manner of operation prevents troublesome condensation in the pipes through which the gaseous mixture is conveyed to the apparatus for analysis.
  • the major disadvantage of such processes is that the composition of the gaseous mixture analyzed differs considerably from that of the mixture circulating through the system of pipes from which the samples are taken.
  • samples which are drawn off can be diluted in an auxiliary gas, such as hydrogen, at the very moment at which they are taken.
  • an auxiliary gas such as hydrogen
  • analysis of the diluted samples, as by chromatography is necessarily imprecise.
  • concentration of these samples in the auxiliary gas cannot easily be maintained constant from one sample to the other by reason of variations in pressure in the tube from which the sample is taken or fouling of the sampler, for example.
  • the present invention has for its object the elimination of the disadvantages of the above described processes and the provision of a device from which accurate samples can be taken for analysis without fear of blocking the passages of the device with condensable material.
  • the invention comprises a device in which the dangers of .blockage are limited and which permits highly representative samples of a gaseous mixture, circulating at high temperature through a system of pipes, to be drawn OE and analyzed.
  • the device comprises a sampler, one end of which extends into the system of pipes while the other end is connected to a circuit housed within a chamber maintained atconstant temperature of at least 150 C., in which the circuit comprises a sampling valve intended periodically to isolate a sample of the gaseous mixture of given volume which sample is entrained out of the chamber in a stream of inert gas.
  • the sample which is thus entrained can be cooled to a relatively high degree and circulated through pipes without further risk of condensation. It can therefore be easily conveyed to the analyzing device or devices, such as a chromatograph, which can be located in a convenient site distant from the point at which the sample has been taken.
  • the analyzing device or devices such as a chromatograph
  • the temperature of the chamber, in which the circuit embodying the sampling valve is placed should be as high as possible in order to restrict condensation of the heavy products contained in the drawn off gaseous mixture.
  • the drawing is an illustration, in diagrammatic form, of a sampling device embodying the features of this invention comprising a dismantleable sampler 1, in the form of a tubing, mounted for connection with a tube 2 contiguous to a system of pipes 3 through which the gaseous mixture to be tested, such as that issuing from a cracking furnace, circulates at a temperature in the vicinity of 400 C., under relative pressure of approximately 600 g./sq. cm. Insulation 4 is used thermally to line the system of pipes 3 and the connecting tube 2 through which the sampler 1 extends.
  • the sampler 1 is dismantleable in that it can slide along the axis of the connecting tube 2 with the assembly being sealed by a stuffing' box 5.
  • a valve with integral passage 6 permits the installation to be isolated when the sampler is dismantled and can be closed before the sampler is completely extracted from the connecting tube 2.
  • the sampler 1 is connected to a circuit housed in a chamber 10 maintained at constant temperature, such as at a temperature within the range of 200 to 250 C., by suitable heating means such as a heating coil 11.
  • the sampler can be isolated from the circuit by means of the valve 12.
  • the circuit comprises a separator 13 of the cyclone type and a filter 14 which separate condensed products or solid particles which might be contained in the gaseous mixture and the circuit is completed with a sampling valve 15 of a well known type which can operate at high temperature.
  • a vent 16 communicates with the valve 15 to permit samples of constant volume to be measured under atmospheric pressure.
  • Conduits 17 and 18 communicate the sampling valve to a chromatograph, the sample being conveyed by entrainment in a carrier gas which may be hydrogen, helium or nitrogen, for example.
  • a carrier gas which may be hydrogen, helium or nitrogen, for example.
  • vapor intake valve 9 is closed and valve 12 is opened.
  • the gaseous mixture to be analyzed is then free to pass through the sampler.
  • Condensed products and carbon dust contained in the gaseous mixture are removed by the cyclone separator 13 and the filter 14 and the gaseous mixture then passes through the sample valve 15 by means of which a given volume of gas is isolated and directed through pipe 18 to the chromatograph after entrainment with carrier gas which is introduced through pipe 17.
  • valve 12 is closed and valve 9 is opened whereby water vapor passes as a stream from line 8 through the interior of the sampler for cleaning the interior thereof.
  • the sampling device of this invention can be provided with valves which are capable of automatic control by a programmer to permit samples of constant volume to be taken at regular timed intervals and for passage immediately to an apparatus for analysis automatically as by chromatography.
  • a device for the periodic sampling of a stream of a hot gaseous mixture containing easily condensable components comprising a housing, heating means for maintaining the housing at a temperature of at least 150 C., a circuit within said heated housing including a sampling device operative periodically to remove a sample of hot gaseous mixture of given volume, a sampling tube one end of which communicates with the gaseous stream and the other end with the sampling device, means connecting the sampling device within the housing for entrainment of the sample of gaseous material with an inert gas, said sampling tube and sampling device maintaining said hot gas at an elevated temperature above the condensing temperature of its components prior to reaching said housing and while within said housing and means connecting the sampling device for transmission of the gaseous material diluted with the inert gas to a gas test means.
  • a device as claimed in claim 1 in which the housing is maintained at a temperature within the range of 200 to 250 C.
  • a device as claimed in claim 1 in which the hot gaseous mixture circulates through a system of pipes and in which the device includes a tube which extends into communication with the system of pipes, a valve within said tube for isolating the system of pipes from the outside atmosphere, and a stuffing box enclosing the tube with means for insertion of the sampling tube therethrough into communication with the system of pipes.
  • a device as claimed in claim 1 in which the circuit includes a conduit in communication with the sampler tube in advance of the sampling device, a source of water vapor, and valve means for controlling the passage of water vapor through the sampler tube when the sampler is not being used for the removal of a sample of the gaseous mixture.
  • a device as claimed in claim 3 which includes a conduit in communication with the tube, a source of water vapor and a valve means in the conduit for controlling the passage of water vapor into the tube.
  • a device as claimed in claim 1 in which the circuit within the housing includes a cyclone separator in line with the sampler tube in advance of the sampling device for removal of solids and condensate from the gaseous mixture.
  • a device as claimed in claim 1 in which the circuit within the housing includes a filter in line with the sampler tube and in advance of the sampling device for the removal of solids from the gaseous mixture.
  • a device as claimed in claim 1 which includes a valve in line with the sampler tube in advance of the sampling device for isolating the sampler tube from the circuit.

Landscapes

  • 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)
  • Sampling And Sample Adjustment (AREA)
US779514A 1967-11-30 1968-11-27 Device for sampling hot gaseous mixtures containing condensables Expired - Lifetime US3517557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR130297 1967-11-30

Publications (1)

Publication Number Publication Date
US3517557A true US3517557A (en) 1970-06-30

Family

ID=8642496

Family Applications (1)

Application Number Title Priority Date Filing Date
US779514A Expired - Lifetime US3517557A (en) 1967-11-30 1968-11-27 Device for sampling hot gaseous mixtures containing condensables

Country Status (6)

Country Link
US (1) US3517557A (enrdf_load_stackoverflow)
BE (1) BE724485A (enrdf_load_stackoverflow)
DE (2) DE6809234U (enrdf_load_stackoverflow)
FR (1) FR1553090A (enrdf_load_stackoverflow)
GB (1) GB1198888A (enrdf_load_stackoverflow)
NL (1) NL6817056A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583229A (en) * 1969-11-03 1971-06-08 Combustion Eng Gas sampling probe
US3662605A (en) * 1970-05-13 1972-05-16 Nl Industries Inc Method and means for automating computer-controlled production of particulate materials
JPS51123080U (enrdf_load_stackoverflow) * 1975-03-31 1976-10-05
US3985624A (en) * 1974-05-30 1976-10-12 Institut Francais Du Petrole, Des Carburants Et Lubrifiants Et Entreprise De Recherches Et D'activities Petrolieres Elf Device for continuous sampling, especially in a distillation column for topping crude petroleum
US4324146A (en) * 1980-09-29 1982-04-13 The B. F. Goodrich Company Sampling apparatus and process
US4342234A (en) * 1979-12-17 1982-08-03 Tibor Bernath Apparatus for extracting a hot gas sample from a chamber and for feeding the sample to an analyzer
EP0112407A1 (en) * 1982-12-27 1984-07-04 Kinetics Technology International Corporation Hot gas sampling
US4474070A (en) * 1981-09-16 1984-10-02 Rheinisch-Westfalischer Technischer Uberwachungsverein E.V. Method and apparatus for measuring particulates in a waste gas
US4485684A (en) * 1981-11-10 1984-12-04 Krupp Polysius Ag Apparatus for extracting and analysing dust-laden gas samples
EP0129870A1 (de) * 1983-06-24 1985-01-02 Ruhrkohle Aktiengesellschaft Probenahmeventil für eine Kohlevergasungsanlage mit einem Festbett-Druckreaktor
US4497214A (en) * 1982-05-28 1985-02-05 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Apparatus for taking gaseous samples
US4686848A (en) * 1984-11-20 1987-08-18 Umec Corporation High temperature particulate filter media test unit
FR2603104A1 (fr) * 1986-08-25 1988-02-26 Siderurgie Fse Inst Rech Sonde de prelevement de gaz en milieu tres pollue et a haute temperature
US6609412B2 (en) 2001-03-22 2003-08-26 University Of Maryland Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same
WO2010097070A1 (de) * 2009-02-27 2010-09-02 Sms Siemag Aktiengesellschaft Einrichtung zur gasprobenentnahme
US20140007708A1 (en) * 2012-07-05 2014-01-09 Caterpillar Inc. Aerosol sampling device
CN110888386A (zh) * 2019-11-07 2020-03-17 中国船舶重工集团公司第七一九研究所 一种基于plc的大流量气溶胶取样控制系统
US20240003784A1 (en) * 2022-07-01 2024-01-04 Chemtech Services, Inc. Direct measurement of composition in chemical processing equipment to optimize process variables

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529472A1 (fr) * 1982-07-05 1984-01-06 Inst Francais Du Petrole Nouveau type de micro-unite de test catalytique avec systeme de prelevement par vannes d'echantillonnage
US4481833A (en) * 1982-12-27 1984-11-13 Uop Inc. Particle excluding sample probe
DE9116500U1 (de) * 1991-01-04 1993-01-14 VEAG Vereinigte Energiewerke AG, O-1140 Berlin Anordnung einer Rauchgas-Probenahme- und Analysen-Vorrichtung für eine Feuerung
CN103076816B (zh) * 2013-01-08 2015-04-01 中国工程物理研究院核物理与化学研究所 一种放射性气载流出物排放监测的自动控制系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930237A (en) * 1956-06-19 1960-03-29 Leeds & Northrup Co Flue gas sampling system
US2964938A (en) * 1957-07-11 1960-12-20 Foxboro Co Chromatographic gas analysis sample control system
US3043145A (en) * 1958-06-10 1962-07-10 Bailey Meter Co Gas sample scanning apparatus
US3053077A (en) * 1958-09-08 1962-09-11 Gulf Research Development Co Chromatographic method and apparatus
US3255575A (en) * 1962-05-31 1966-06-14 Texaco Inc Apparatus for obtaining bubble-free sample, and method for obtaining same
FR1499984A (fr) * 1966-05-16 1967-11-03 Siderurgie Fse Inst Rech Perfectionnements au prélèvement et à l'échantillonnage des gaz

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930237A (en) * 1956-06-19 1960-03-29 Leeds & Northrup Co Flue gas sampling system
US2964938A (en) * 1957-07-11 1960-12-20 Foxboro Co Chromatographic gas analysis sample control system
US3043145A (en) * 1958-06-10 1962-07-10 Bailey Meter Co Gas sample scanning apparatus
US3053077A (en) * 1958-09-08 1962-09-11 Gulf Research Development Co Chromatographic method and apparatus
US3255575A (en) * 1962-05-31 1966-06-14 Texaco Inc Apparatus for obtaining bubble-free sample, and method for obtaining same
FR1499984A (fr) * 1966-05-16 1967-11-03 Siderurgie Fse Inst Rech Perfectionnements au prélèvement et à l'échantillonnage des gaz

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583229A (en) * 1969-11-03 1971-06-08 Combustion Eng Gas sampling probe
US3662605A (en) * 1970-05-13 1972-05-16 Nl Industries Inc Method and means for automating computer-controlled production of particulate materials
US3985624A (en) * 1974-05-30 1976-10-12 Institut Francais Du Petrole, Des Carburants Et Lubrifiants Et Entreprise De Recherches Et D'activities Petrolieres Elf Device for continuous sampling, especially in a distillation column for topping crude petroleum
JPS51123080U (enrdf_load_stackoverflow) * 1975-03-31 1976-10-05
US4342234A (en) * 1979-12-17 1982-08-03 Tibor Bernath Apparatus for extracting a hot gas sample from a chamber and for feeding the sample to an analyzer
US4324146A (en) * 1980-09-29 1982-04-13 The B. F. Goodrich Company Sampling apparatus and process
US4474070A (en) * 1981-09-16 1984-10-02 Rheinisch-Westfalischer Technischer Uberwachungsverein E.V. Method and apparatus for measuring particulates in a waste gas
US4485684A (en) * 1981-11-10 1984-12-04 Krupp Polysius Ag Apparatus for extracting and analysing dust-laden gas samples
US4497214A (en) * 1982-05-28 1985-02-05 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Apparatus for taking gaseous samples
EP0112407A1 (en) * 1982-12-27 1984-07-04 Kinetics Technology International Corporation Hot gas sampling
WO1985000178A1 (en) * 1983-06-24 1985-01-17 Ruhrkohle Aktiengesellschaft Sampling valve for a coal gasification plant with fly ash or fluidization pressure reactor
WO1985000179A1 (en) * 1983-06-24 1985-01-17 Ruhrkohle Aktiengesellschaft Sampling valve for a coal gasification plant with a fixed bed pressure reactor
EP0129871A1 (de) * 1983-06-24 1985-01-02 Ruhrkohle Aktiengesellschaft Probenahmeventil für eine Kohlevergasungsanlage mit einem Flugstaub- oder Wirbelschicht-Druckreaktor
EP0129870A1 (de) * 1983-06-24 1985-01-02 Ruhrkohle Aktiengesellschaft Probenahmeventil für eine Kohlevergasungsanlage mit einem Festbett-Druckreaktor
US4594904A (en) * 1983-06-24 1986-06-17 Ruhrkohle Aktiengesellschaft Sampling valve for a fixed bed reactor coal gasification plant
US4686848A (en) * 1984-11-20 1987-08-18 Umec Corporation High temperature particulate filter media test unit
FR2603104A1 (fr) * 1986-08-25 1988-02-26 Siderurgie Fse Inst Rech Sonde de prelevement de gaz en milieu tres pollue et a haute temperature
US6609412B2 (en) 2001-03-22 2003-08-26 University Of Maryland Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same
US6732568B2 (en) 2001-03-22 2004-05-11 University Of Maryland Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same
US6739178B2 (en) 2001-03-22 2004-05-25 University Of Maryland Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same
WO2010097070A1 (de) * 2009-02-27 2010-09-02 Sms Siemag Aktiengesellschaft Einrichtung zur gasprobenentnahme
US20140007708A1 (en) * 2012-07-05 2014-01-09 Caterpillar Inc. Aerosol sampling device
US8955400B2 (en) * 2012-07-05 2015-02-17 Caterpillar Inc. Aerosol sampling device
CN110888386A (zh) * 2019-11-07 2020-03-17 中国船舶重工集团公司第七一九研究所 一种基于plc的大流量气溶胶取样控制系统
CN110888386B (zh) * 2019-11-07 2022-11-25 中国船舶重工集团公司第七一九研究所 一种基于plc的大流量气溶胶取样控制系统
US20240003784A1 (en) * 2022-07-01 2024-01-04 Chemtech Services, Inc. Direct measurement of composition in chemical processing equipment to optimize process variables

Also Published As

Publication number Publication date
FR1553090A (enrdf_load_stackoverflow) 1969-01-10
GB1198888A (en) 1970-07-15
DE6809234U (de) 1972-07-27
BE724485A (enrdf_load_stackoverflow) 1969-05-27
NL6817056A (enrdf_load_stackoverflow) 1969-06-03
DE1811815A1 (de) 1969-08-21

Similar Documents

Publication Publication Date Title
US3517557A (en) Device for sampling hot gaseous mixtures containing condensables
US4344917A (en) Sample inlet for analysis instrument and method of sample analysis
US4296637A (en) Method and apparatus for sampling hot homogeneous mixtures
JPH0145578B2 (enrdf_load_stackoverflow)
JP2006516717A5 (enrdf_load_stackoverflow)
Nordholm et al. Polycyclic aromatic hydrocarbons in smokehouses
US4101282A (en) Sample conditioner and analyzer
CN112179998A (zh) 确定样品中化合物化学组成的系统和方法
US3807233A (en) Method and apparatus for withdrawing fluid samples from a process stream
US2370817A (en) Method and apparatus for treating drilling fluid
US4272481A (en) System and method for providing a vapor phase sample for analysis
GB802247A (en) Improvements in gas-sampling apparatus
Whiting et al. On-column sampling device for thermogravimetry/capillary gas chromatography/mass spectrometry
US11199526B2 (en) Determining hydrocarbon content in steam condensate
Hickman et al. Reproducibility of pyrolysis-mass spectrometry using three different pyrolysis systems
US7360394B2 (en) Multi-purpose modular pyrolysis and thermal processing system for chemical and biological threat agent detection
US3511029A (en) Method and apparatus for chromatography sample preparation
Murae Characterization of extraterrestrial high-molecular-weight organic matter by pyrolysis-gas chromatography/mass spectrometry
US5328663A (en) Apparatus for the trapping of reaction products
Cukor et al. Analysis of Organic Mixtures Using the Combination of a Thermogravimetric Analyzer, a Gas Chromatograph and an Infrared Spectrophotometer
US3462918A (en) Chromatographic method and apparatus
US2376145A (en) Gas analysis
US2336176A (en) Geochemical prospecting
GB2271179A (en) Analysing materials with hydrocarbon potential
Bassi et al. Methods for the quantification of ethylene produced by plants