WO2001069233A2 - Dispositif d'echantillonnage permettant l'analyse de gaz bruts de four a coke et d'autres gaz impurs et procede d'analyse de ces gaz - Google Patents

Dispositif d'echantillonnage permettant l'analyse de gaz bruts de four a coke et d'autres gaz impurs et procede d'analyse de ces gaz Download PDF

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Publication number
WO2001069233A2
WO2001069233A2 PCT/EP2001/002667 EP0102667W WO0169233A2 WO 2001069233 A2 WO2001069233 A2 WO 2001069233A2 EP 0102667 W EP0102667 W EP 0102667W WO 0169233 A2 WO0169233 A2 WO 0169233A2
Authority
WO
WIPO (PCT)
Prior art keywords
gas
electrostatic filter
gases
sampling
saturator
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.)
Ceased
Application number
PCT/EP2001/002667
Other languages
German (de)
English (en)
Other versions
WO2001069233A3 (fr
Inventor
Frank Rossa
Werner Kruck
Horst Schröder
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.)
Deutsche Montan Technologie GmbH
Original Assignee
Deutsche Montan Technologie GmbH
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 Deutsche Montan Technologie GmbH filed Critical Deutsche Montan Technologie GmbH
Priority to AU2001244200A priority Critical patent/AU2001244200A1/en
Priority to KR1020027010493A priority patent/KR20020088071A/ko
Priority to JP2001568064A priority patent/JP2003527602A/ja
Priority to EP01917082A priority patent/EP1264175A2/fr
Publication of WO2001069233A2 publication Critical patent/WO2001069233A2/fr
Publication of WO2001069233A3 publication Critical patent/WO2001069233A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/019Post-treatment of gases
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2247Sampling from a flowing stream of gas
    • G01N1/2258Sampling from a flowing stream of gas in a stack or chimney
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0011Sample conditioning
    • G01N33/0014Sample conditioning by eliminating a gas
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0011Sample conditioning
    • G01N33/0016Sample conditioning by regulating a physical variable, e.g. pressure or temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2247Sampling from a flowing stream of gas
    • G01N2001/227Sampling from a flowing stream of gas separating gas from solid, e.g. filter
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N2001/2282Devices for withdrawing samples in the gaseous state with cooling means

Definitions

  • the invention relates to a device for sampling for gas analysis of gases heavily loaded with impurities, in particular with solids and tar, according to the preamble of claim 1 and a method for gas analysis of these gases
  • the raw coke oven gas produced from coking coal is a brown-yellow mixture of gases and vapors. It mainly consists of hydrogen, methane, unsaturated hydrocarbons, carbon oxide, carbon dioxide, nitrogen, ammonia, sulfur and hydrogen sulfide as well as tar.
  • the raw coke oven gas In order to use the raw coke oven gas as heating gas in steelworks or power plants or to feed it into a gas network, it has to be cleaned in a special raw gas treatment plant.
  • the steam-saturated coke oven raw gas coming from the coke ovens which is approx. 80 ° C hot, is first indirectly cooled and electrostatically de-aerated before it is largely freed from hydrogen sulfide, ammonia, benzene and naphthalene. Due to the high proportion of particulate and tarry constituents in the raw coke oven gas, it is not possible to continuously sample the coke oven raw gas coming from the coke ovens, which is saturated with steam at approx. 80 ° C, in order to carry out gas analyzes in online operation.
  • the continuous sampling of the raw coke oven gas only takes place after indirect gas cooling and electrostatic de-icing in the cold area (approx. 20 ° C).
  • the maintenance effort for this sampling is still very high there.
  • a continuous oxygen measurement in the raw coke oven gas can therefore only take place at the outlet of the electrostatic filter. Therefore, the time for switching off the electrostatic filter when an explosive mixture is detected in this area must be very short.
  • the cut-off point for the electrostatic filter is usually set to a limit oxygen content of less than 2% in the raw coke oven gas. This often leads to unnecessary downtimes in the field of coke oven raw gas depletion.
  • the invention has for its object to provide an apparatus and method with which continuous sampling and analysis of gases heavily loaded with contaminants, such as solids and tar, is reliably possible with little maintenance.
  • the response time for switching off electrostatic discharge systems for raw coke oven gas should be extended.
  • Another task is to provide a method for gas analysis of these gases.
  • the sample gas to be analyzed is kept in a sampling line and in an electrostatic filter at the temperature at which the sampling takes place.
  • this temperature is approx. 80 ° C for raw coke oven gas.
  • the sampling line and the electrostatic filter must be largely protected against condensation, e.g. B. by insulation, so that water and tar can not condense appreciably, which would lead to caking in the sampling line and the electrostatic filter. Preference is given to heating the sampling line and the electrostatic filter to a temperature which corresponds to the temperature of the sample gas during sampling.
  • the electrostatic precipitator has a significantly higher efficiency at a temperature of approx. 80 ° C than at lower temperatures. 99.99% of the solids are separated in the heated electrostatic precipitator.
  • the sample gas is then - preferably - passed through a heated cotton filter. In this cotton filter any entrained particles are separated due to the reduction in flow velocity and the filter effect of the cotton.
  • the sample gas then flows into a heated gas saturator.
  • the gas saturator is mixed with an organic solvent, e.g. B. decalin filled.
  • the sample gas is saturated with the solvent according to the saturation vapor pressure.
  • the sample gas is now fed into an indirect cooler in which the water vapor and the naphthalene contained in the sample gas are condensed out.
  • the naphthalene does not clog the cooler because it is dissolved and washed off by the solvent taken up in the saturator, which also condenses in the cooler.
  • the naphthalene can also be separated with a wash bottle filled with solvent.
  • the sample gas cleaned in this way can now be conveyed continuously by means of the gas pump to the desired online analysis and to the oxygen measurement connected in parallel.
  • a solvent trap is provided in front of the gas saturator, which separates entrained solvent in the event of fluctuations in pressure.
  • the sampling system according to the invention is protected against explosion by a locking chain.
  • PSA switch Pressure Switch Alarm
  • the locking chain also closes automatically if an oxygen content of> 4% is measured during the oxygen measurement.
  • an alarm message (signal lamp and horn) and a switch-off signal can be sent from the sampling device to the technical facilities, such as the electrostatic emptying of a coking plant.
  • the sample gas After passing through the oneline analysis devices, the sample gas can be returned to the sample gas line.
  • the sampling device can be arranged in a transport case.
  • the transport case can be heated so that separate heating of the electrostatic precipitator and the gas saturator is not necessary.
  • sampling device With the sampling device according to the invention, continuous sampling is possible with all gases containing a lot of dust, such as e.g. waste incineration, gasification, heavy oil firing, coal firing systems and blast furnace gases.
  • gases containing a lot of dust such as e.g. waste incineration, gasification, heavy oil firing, coal firing systems and blast furnace gases.
  • test gas is under pressure, a gas pump may not be necessary.
  • Figure. 1 shows a schematic illustration of the sampling device
  • Figure 2 shows an electrostatic filter with integrated solids determination.
  • a heated sampling line 2 is branched off in front of a coke oven raw gas line 1 of a coking plant, not shown, which is connected to a heated electrostatic filter 3 for separating the aerosol-like contaminants of the raw gas.
  • the electrostatic filter 3 is operated with a high-voltage generator 4.
  • the electrostatic filter 3 is provided with a continuous drain 3 '.
  • a cotton filter 5, which is also heatable, is arranged behind the electrostatic filter 3.
  • the sample gas then flows through a gas saturator 6 with decalin 6a, which is preceded by a solvent trap 6 '.
  • the sample gas saturated with decalin 6a flows into a cooler 7, in which the condensation takes place.
  • the cooler 7 is provided with a continuous drain T.
  • the sample gas processed in this way can be fed to a continuous oxygen measurement 10 via a gas pump 8. Further online gas measuring devices 9 are connected via a further line.
  • the electrostatic filter 11 shows an electrostatic filter 11 with integrated solids determination.
  • the electrostatic filter 11 consists of a cylindrical jacket 12, which serves as a negative pole, and a spray wire 13 with an insulator 13M.
  • the cylindrical jacket 12 has a cover 14.
  • a cone 15 with an outlet 17 is arranged, which can be closed by a shut-off valve 16.
  • the sample gas enters through a gas inlet nozzle 18 which is open in the direction 'of the cone 15 °.
  • the cone 15 of the electrostatic precipitator 11, which acts as a diffuser, results in a reduction in the flow velocity, as a result of which rough particles are already pre-separated in the sample gas.
  • the sample gas leaves the electrostatic precipitator 11 via a gas outlet connection 19 which is arranged at the upper end of the cylindrical jacket 12 of the electrostatic precipitator 11.
  • a collecting container 20 is arranged under the cone 15 of the electrostatic filter 11.
  • the collecting container 20 receives the substances separated in the electrostatic filter 11 via an outlet 17.
  • the collecting container 20 can be emptied via an emptying 22 with a shut-off valve 21 onto a sieve plate 24 with a balance 25.
  • the emptying takes place under nitrogen, which is fed into the collecting container 20 through a nitrogen supply 23. Since 99.99% of the solids carried with the sample gas are separated in the electrostatic filter 11, there is thus the possibility of continuously determining the solids content of the sample gas by weighing.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

La présente invention concerne un dispositif d'échantillonnage permettant l'analyse de gaz, notamment de gaz bruts de four à coke, fortement chargés d'impuretés, notamment de matières solides et de goudron. Selon cette invention, une conduite d'échantillonnage (2), protégée de la condensation dans une large mesure et notamment chauffée, est connectée à un électrofiltre (3), protégé de la condensation dans une large mesure et notamment chauffé, et un appareil de refroidissement de gaz (7) est monté dans le sens d'écoulement, derrière ledit électrofiltre (3). Le gaz d'échantillonnage peut être conduit à partir de cet appareil de refroidissement de gaz, par l'intermédiaire d'au moins une conduite, vers au moins un appareil d'analyse de gaz (9).
PCT/EP2001/002667 2000-03-13 2001-03-09 Dispositif d'echantillonnage permettant l'analyse de gaz bruts de four a coke et d'autres gaz impurs et procede d'analyse de ces gaz Ceased WO2001069233A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2001244200A AU2001244200A1 (en) 2000-03-13 2001-03-09 Sampling device for gas analyses of raw coke oven gases and other contaminated gases and method for analysis thereof
KR1020027010493A KR20020088071A (ko) 2000-03-13 2001-03-09 코오크 오븐의 미처리 가스 및 다른 오염된 가스의 가스분석을 위한 샘플링 장치 및 그 분석 방법
JP2001568064A JP2003527602A (ja) 2000-03-13 2001-03-09 未処理コークス炉ガス及び他の汚染されたガスのガス分析のための試料採取用の装置ならびにこれらのガスのガス分析のための方法
EP01917082A EP1264175A2 (fr) 2000-03-13 2001-03-09 Dispositif d'echantillonnage permettant l'analyse de gaz bruts de four a coke et d'autres gaz impurs et procede d'analyse de ces gaz

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011531A DE10011531A1 (de) 2000-03-13 2000-03-13 Vorrichtung zur Probenahme für Gasanalysen von Koksofenrohgasen und anderen verunreinigten Gasen sowie Verfahren zur Gasanalyse dieser Gase
DE10011531.4 2000-03-13

Publications (2)

Publication Number Publication Date
WO2001069233A2 true WO2001069233A2 (fr) 2001-09-20
WO2001069233A3 WO2001069233A3 (fr) 2002-02-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/002667 Ceased WO2001069233A2 (fr) 2000-03-13 2001-03-09 Dispositif d'echantillonnage permettant l'analyse de gaz bruts de four a coke et d'autres gaz impurs et procede d'analyse de ces gaz

Country Status (7)

Country Link
EP (1) EP1264175A2 (fr)
JP (1) JP2003527602A (fr)
KR (1) KR20020088071A (fr)
AU (1) AU2001244200A1 (fr)
DE (1) DE10011531A1 (fr)
WO (1) WO2001069233A2 (fr)
ZA (1) ZA200206180B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101183055B (zh) * 2007-12-20 2010-05-19 眉山麦克在线设备有限公司 一种煤液化装置在线分析样品预处理系统
CN103983486A (zh) * 2014-03-26 2014-08-13 江苏省沙钢钢铁研究院有限公司 一种用于焦炭显微组织测定的微结焦制样装置及方法
CN115575572A (zh) * 2022-09-27 2023-01-06 珠海易奥科技有限公司 一种在线氧气分析装置

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FR2910967B1 (fr) * 2006-12-28 2009-04-03 Commissariat Energie Atomique Dispositif et procede de mesure continue de la concentration en goudrons dans un flux gazeux
EP2405254B1 (fr) 2010-07-05 2014-06-04 Sick Ag Procédé optoélectronique pour l'analyse de gaz
KR101310800B1 (ko) * 2011-09-29 2013-09-25 현대제철 주식회사 코크스 원료용 시험장치
CN105203355A (zh) * 2014-06-24 2015-12-30 上海宝钢化工有限公司 一种焦炉煤气采样装置及采样方法
CN104403699B (zh) * 2014-11-13 2017-03-01 甘肃酒钢集团宏兴钢铁股份有限公司 一种用于焦炉采样气体预处理设备
DE102016123473A1 (de) * 2016-12-05 2018-06-07 Endress+Hauser Messtechnik GmbH+Co.KG Probenvorbereitungseinrichtung
CN109030123A (zh) * 2018-08-27 2018-12-18 佛山科学技术学院 一种用于高温环境的大气采样器

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CN101183055B (zh) * 2007-12-20 2010-05-19 眉山麦克在线设备有限公司 一种煤液化装置在线分析样品预处理系统
CN103983486A (zh) * 2014-03-26 2014-08-13 江苏省沙钢钢铁研究院有限公司 一种用于焦炭显微组织测定的微结焦制样装置及方法
CN115575572A (zh) * 2022-09-27 2023-01-06 珠海易奥科技有限公司 一种在线氧气分析装置

Also Published As

Publication number Publication date
EP1264175A2 (fr) 2002-12-11
JP2003527602A (ja) 2003-09-16
AU2001244200A1 (en) 2001-09-24
ZA200206180B (en) 2003-03-18
WO2001069233A3 (fr) 2002-02-14
DE10011531A1 (de) 2001-09-27
KR20020088071A (ko) 2002-11-25

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