US3904368A - Burning and collection apparatus for combustion gases - Google Patents

Burning and collection apparatus for combustion gases Download PDF

Info

Publication number
US3904368A
US3904368A US338194A US33819473A US3904368A US 3904368 A US3904368 A US 3904368A US 338194 A US338194 A US 338194A US 33819473 A US33819473 A US 33819473A US 3904368 A US3904368 A US 3904368A
Authority
US
United States
Prior art keywords
piston
combustion
cylinder
gas
gases
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
US338194A
Other languages
English (en)
Inventor
Kenichi Takeyama
Takayoshi Morimoto
Fumiya Konishi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP2366272A external-priority patent/JPS5235319B2/ja
Priority claimed from JP12090172A external-priority patent/JPS5235554B2/ja
Priority claimed from JP12090072A external-priority patent/JPS5235553B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of US3904368A publication Critical patent/US3904368A/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
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
    • 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
    • G01N1/24—Suction devices
    • 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
    • G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
    • 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
    • G01N1/24—Suction devices
    • G01N2001/247—Syringes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/17—Nitrogen containing
    • Y10T436/172307—Cyanide or isocyanide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/17—Nitrogen containing
    • Y10T436/173845—Amine and quaternary ammonium
    • Y10T436/175383—Ammonia

Definitions

  • ABSTRACT A burning and collection apparatus for combustion gases, comprising a combustion unit having a combustion chamber in which a sample material is to be burned and an electric heating furnace, a gas supply unit for introducing air or gas at an optionally adjusted predetermined rate, a piston-cylinder type gas collection unit for collecting the combustion gases generated in said combustion chamber, and a driving unit for operating said piston at an optionally adjusted predetermined speed, whereby a sample material such as plastics can be burned under an optional temperature and an optional supply rate of air, and the resulting combustion gases can be collected without substantially diluting them and hence the composition of the combustion gases can be analyzed with high accuracy.
  • This invention relates to a burning and collection apparatus for combustion gases, which is used in analyzing the composition of the combustion gases generating upon burning a sample material such as plastics, by burning the sample material and collecting the combustion gases.
  • I A type in which a sample material is burned in the atmosphere and the resulting combustion gases are collected in a large container disposed above the sample material by taking advantage of the ascending and dissipation of the combustion gases.
  • an inert gas such as nitrogen gas
  • the apparatus of the type I has had the disadvantages that the composition analysis cannot be achieved with high accuracy since the combustion gases are diluted with a large quantity of air, and that the combustion is possible only in air and the atmospheric gas cannot be changed optionally.
  • the apparatus of the type II has suffered the disadvantage that when the material is burned in the flask in which is sealed air, the oxygen concentration in the flask decreases as the burning proceeds and pressure is built up in said flask by generated gases though the balloon is inflated, so that it is impossible to burn the material under the same conditions from the start to end of the burning.
  • the apparatus of the type III has had the disadvantages that the regulation of the supply rate of air or inert gas relative to the decreasing pressure in the flask is difficult and hence the combustion conditions can hardly be maintained constant, namely if the supply rate of air or inert gas is too high, combustion under pressurized state will result while conversely, if the supply rate is too low, combustion under reduced pressure state will result, and that, therefore, the combustion conditions vary between the start and end of combustion though not to such a large degree as in the apparatus of the type II.
  • An object of the present invention is to provide a burning and collection apparatus for combustion gases in which a sample material can be burned under the same conditions from the start to end of the combustion and the resulting combustion gases can be collected without substantially diluting them.
  • Another object of the invention is to provide a burning and collection apparatus for combustion gases, in which the temperature of a combustion chamber and the supply rate of air or inert gas to said combustion chamber can optionally be adjusted, and various combustion conditions can be reproduced.
  • Still another object of the invention is to provide a burning and collection apparatus for combustion gases, in which, in the event when the combustion gases generated are soluble in water, the combustion gases can be collected substantially entirely in the gaseous state without dissolving them in water, such as moisture.
  • a further object of the invention is to provide a burning and collection apparatus for combustion gases, in which an air having an oxygen concentration different from the atmospheric air, or an inert gas, such as nitrogen gas, is used in lieu of the atmospheric air, whereby combustion gases in different atmospheres can be collected.
  • the burning and collection apparatus is characterized in that it comprises a combustion unit consisting of a combustion chamber in which a sample material is to be placed and a heating furnace for heating said combustion chamber, a gas supply unit for introducing a predetermined rate of air or other gas into said combustion chamber, and a piston-cylinder type gas collection unit for sucking the combustion gases generated in said combustion chamber.
  • the combustion chamber is made preferably of materials which do not react with combustion gases and highly resistive to heat, e.g. quartz.
  • the heating furnace may be of electric heater type or gas burning type, but the electric heater type is preferred in view of stability and ease in adjustment of the heating temperature, and sanitation.
  • an air pump of the like is used when air in the atmosphere is to be supplied, or means for mixing nitrogen or oxygen gas in air is used when an air of oxygen concentration different from that of the atmospheric air is to be used, or a bomb containing an inert gas, such as nitrogen gas, is used when such inert gas is to be used.
  • the atmospheric air is generally used in the operation of the subject apparatus and, therefore, the apparatus will be described hereunder as comprising an air supply unit.
  • the air supply unit is preferably of a type by which the supply rate of air per unit time can optionally be adjusted and which is capable of supplying air at a stable rate.
  • Such type of air supply unit includes an air pump. a blower and a bomb.
  • dehumidization means in the air supply line on the downstream side of the combustion chamber so that water-soluble gases in the combustion gases resulting from combustion may not dissolve in water contained in air.
  • the piston-cylinder type gas collection unit may be of a type in which a piston is moved or a cylinder is moved with the piston fixed, for sucking the combustion gases generated in the combustion chamber.
  • the piston or cylinder may be operated either manually of by an operating device.
  • an Operating device such as a motor, is generally used to operate the piston or cylinder at a constant speed.
  • the piston or cylinder operating device similar to the air supply unit, is preferably of a type by which the suction rate of gas can optionally be adjusted.
  • the dimensions of the piston and cylinder are selected preferably so as to provide therebetween sealing effect to such a degree that, when a pressure differential has occurred between the interior and exterior of the cylinder upon displacement of either the piston or cylinder relative to each other, air may move into the cylinder to eliminate the pressure differential, whereas when a pressure differential has not occurred, the movement of air may be blocked, and thereby to maintain the suction rate of gas slightly larger than the supply rate of air. If the suction rate of gas is simply made slightly larger than the supply rate of air, a reduced pressure condition will appear in the combustion chamber.
  • the dimensions of the piston and cylinder as described above, a slight amount of air flows into the cylinder as the internal pressure of the cylinder tends to decrease below the atmospheric pressure at the time of suction operation, whereby the development of sub-atmospheric pressure in the cylinder and combustion chamber can be prevented and substantial dilution of the collected gases can be avoided, and further the adjustment of the operating speed of the operating device can be facilitated.
  • the inner walls of the cylinder and piston which are contacted by the combustion gases should be coated with materials little reactive with the gases, e.g. fluorine-containing resin and polyethylene, or the cylinder and piston should be made of such materials, so that said inner Walls may not be attacked by the combustion gases.
  • Water-soluble combustion gases may be generated occasionally depending upon the type of sample material burned. If the aqueous vapour generated in the combustion chamber on such occasion are collected in the cylinder along with other combustion gases, the water-soluble gases will be dissolved in the water formed in the cylinder upon cooling of the aqueous vapour. Thus, the gases insoluble in water will be collected in the gaseous state and the gases soluble in water in the form of solutions in water, so that the subsequent analysis of gas composition cannot be completed at once. It is, therefore, recommended to provide between the combustion chamber and gas collection unit cooling means for cooling the gases to be collected and liquefying the aqueous vapour entrained therein, and thereby to remove the water from the gases so as not to be collected in the gas collection unit.
  • a conduit connecting the combustion chamber with the cylinder may be elongated so that the aqueous vapour may be cooled and condensed by the external air during passage in said elongate eonduit. It is possible to contact cold water with the outer surface of the conduit to forcibly cool and condense the aqueous vapour. Further, it is advantageous, for enhancing the accuracy of analysis, to provide filter means in the conduit between the combustion chamber and cylinder to remove smoke and soot from the combustion gases before they are collected in the cylinder.
  • FIG. I is a diagram showing the layout of an embodiment of the burning and collection apparatus for combustion gases, according to the invention.
  • FIG. 2 is a sectional view of the combustion unit of the apparatus, showing the arrangement to measure the temperature of said combustion chamber;
  • FIG. 3 is a sectional view of the piston-cylinder type gas collection unit
  • FIG. 4 is an end view of the gas collection unit.
  • reference numeral 1 designates a combustion unit in which sample materials such as plastics are to be burned.
  • the combustion unit 1 includes a quartz cylindrical combustion chamber 2 and a heating furnace 3 surrounding said combustion chamber '2 externally.
  • the combustion chamber 2 has an inner diameter of 46 mm and a height of 220 mm, and is provided at its bottom with a gas inlet port 4 extending outwardly through the heating furnace 3 and at its top with a gas outlet port 5 and a sample supply port 7 which is opened and closed by a cap 6. Quartz beads 8 are filled in the combustion chamber 2 up to a level 75 mm from the bottom of said chamber.
  • the heating furnace 3 has an inner diameter of 60 mm and a height of 200 mm, and is provided with an electric heater therein.
  • the heating furnace 3 is of so-called electric heating type.
  • Reference numeral 9 designates an air supply unit for supplying air to the inlet port 4 of the combustion chamber 2.
  • This air supply unit 9 consists of an air pump of a type in which the supply rate of air per unit time is adjustable, and is connected to the inlet port 4 by a gas supply passage 10.
  • Reference numeral 11 designates a dehumidization unit provided in the gas supply passage 10 and consists of a tank 12 with desiceants such as silica gel 13 disposed therein.
  • a section of the gas supply passage 10 leading from the air pump 9 is opened in the bed of silica gel 13 and another section of said gas supply passage 10 leading to the combustion chamber 2 is extended from the top of the tank 12 spaced above the bed of silica gel 13.
  • Reference numeral 15 designates a piston-cylinder type gas collection unit for collecting the combustion gases generating in the combustion chamber 2.
  • This gas collection unit consists of a cylindrical cylinder 17 communieating with the gas outlet port 5 of the combustion chamber 2 through a gas exhaust passage 16, and a piston 18 disposed in said cylinder 17 for sliding movement therein.
  • the cylinder 17 has a cross-sectional area of 177 cm' and an internal volume of 4 l, and is made of stainless steel.
  • the inner wall of the cylinder 17 is lined with a coating film 19 of a material little reactive with the combustion gases collected, e.g.
  • the piston 18 is provided with a rope-shaped seal ring 20 which is made of a tetrafluoroethylene having a Shore hardness of 50-65 and mounted on the outer peripheral surface thereof in light contact with the inner surface of the cylinder 17.
  • the seal ring 20 provides a sealing effect between the piston 18 and the cylinder 17 to such a degree that, when a pressure differential has occurred between the interior and exterior of the cylinder 17 upon displacement of the piston 18 relative to said cylinder, air is permitted to flow into the cylinder through between the seal ring 20 and the inner wall of the cylinder 17 to eliminate said pressure differential, but when the piston 18 is held stationary, air flow between the interior and exterior of the cylinder 17 is blocked.
  • the inner wall of the piston 18 which will be contacted by the combustion gases collected in the cylinder 17 is coated with a coating film 19' of the same material as the coating film 19.
  • the gas exhaust passage 16 is formed of a polytetrafluoroethylene tube having an inner diameter of 8 mm and a length of 1.5 In, said tube consisting of a plurality of sections detachably coupled together by means of couplings 21.
  • filter means 22 which consists of a cylindrical casing communicating with said gas exhaust passage 16 and packed with glass wool 23.
  • a driving device 24 is provided to cause displacement of the'piston 18 within the cylinder 17, which comprises a motor 25, a stepless speed change gear 26 connected with said motor 25 and a guide structure 28 interconnecting said stepless speed change gear 26 and a piston rod 27 of the piston 18.
  • the guide structure 28 is composed of opposed fixed support plates 30, 31, an externally threaded rod 29 connected with the stepless speed change gear 26 and rotatably supported by said support plates 30, 31, a guide rod 32 extending across said support plates 30, 31 with the opposite ends secured thereto respectively, and a movable plate 33 slidably mounted on said guide rod 32 at one end with said threaded rod 29 threadably extending therethrough and having the piston rod 27 connected to the other end thereof.
  • the burning and collection apparatus for combustion gases of the construction described above is operated in the following sequence: Namely, the combustion.
  • the chamber 2 is heated by the electric type heating furnace 3 at first and then the air pump 9 is set in motion to feed air into the combustion chamber 2, after open ing the sample material supply port 7 of said combustion chamber.
  • the air supplied from the air pump 2 is dehumidized during passage through the dehumidization unit 11 by the silica gel 13 disposed in said dehumidization unit.
  • the dry air leaving the dehumidization unit 11 after passage through the silica gel 13 passes in the flow meter 14 and enters the combustion chamber 2 from the gas supply port 4.
  • the flow rate of air from the air pump 9 is regulated to a desired value, e.g. lOO l/hr. on the flow meter 14.
  • the air entering the combustion chamber 2 is heated therein and discharged to the outside from the sample material supply port 7.
  • the temperature of the combustion chamber 2 or, more specifically, the temperatures of the surface of the quartz beads 8 and the inner wall of the combustion chamber 2 which are heated most, are measured by means of a thermocouple 34 inserted into the combus tion chamber 2 from the sample material supply port 7, to adjust the temperature of said combustion chamber 2 to a desired value, e.g. 700C., by controlling the current being supplied to the electric heating furnace 3.
  • the stepless speed change gear 26 is previously adjusted such that the quantity of gases sucked in a unit time will be slightly larger than the quantity of air supplied in a unit time by the air pump 9, and then the motor 25 is set in motion to operate the piston 18 for suction stroke.
  • the externally threaded rod 29 rotates and the moving plate 33 in threadable engagement with said rod 29 displaces towards the motor 25 along the rod 29 and the guide rod 28, whereby the piston 18 is pulled for suction stroke.
  • a predetermined weight of a sample material is placed in the combustion chamber 2 from the sample material supply port 7 and then said supply port 7 is closed by the cap 6.
  • the sample material placed in the combustion chamber 2 burns therein generating a variety of combustion gases.
  • the combustion gases in most cases contain aqueous vapour.
  • the combustion gases thus generated ascend in the combustion chamber 2 and are collected in the cylinder 17 through the gas exhaust passage 16.
  • the aqueous vapour entrained in the combustion gases is cooled and condensed while the combustion gases are passing in the gas exhaust passage 16 which is considerably long, and the resulting water attaches to the inner wall of the exhaust passage 16 and to the glass wool in the filter means 22, in the form of water droplets.
  • the smoke and soot resulting from the combustion are removed from the combustion gases by the filter means 22 during passage of the combustion gases in said filter means, and little of them reach the cylinder 17.
  • a subatmospheric pressure condition tends to occur in the cylinder 17 and combustion chamber 2 in the suction stroke of the piston 18 since the suction rate of gases into the gas collection unit is slightly larger than the supply rate of air from the air pump 9.
  • the distance of displacement of the piston 18 for suction is measured to know the total volume of the gases collected.
  • the piston was pulled over a constant distance so that the total volume of the gases collected might be constant. It was confirmed that the combustion gases remaining in the combustion chamber 2 could be collected entirely in the cylinder 17, by pulling the piston 18 further over 5 cm continuously after the completion of combustion of the sample material.
  • the piston rod 27 is removed from the moving plate 33, the section of the gas exhaust passage 16 leading to the cylinder 17 is disconnected from the remaining section at the coupling 21, a cylindrical gas cell for infrared absorption spectrum, having an internal volume of 250 cc, a light path length of cm and a reduced pressure below 0.5 torr is connected to the disconnected end of said section of the gas exhaust passage 16, and the combustion gases in the cylinder 17 are forced into said gas cell with pressure by pushing the piston 18 by hand.
  • the pressure of the combustiongases was returned to the atmospheric pressure just before the measurement. It was also confirmed that the combustion gases collected in the cylinder 17 are dissipated sufficiently within said cylinder even right after the collec tion and segregation of gases is not seen anywhere in the cylinder.
  • the present inventors conducted another experiment to determine the proportion in which a water-soluble gas is collected in the cylinder 17 in the gaseous state when such water-soluble gas is generated in the combustion chamber 2.
  • 0.1 g of polyethylene which generates a large quantity of water when burned was placed in the combustion chamber 2 and burned therein under the same conditions under which it is normally burned, i.e. at a temperature of 700C. and with air supplied at the rate of 100 I/hr.
  • the aqueous vapour present therein was removed therefrom by condensing it in the gas exhaust passage 16.
  • the apparatus of the invention is advantageous in that the supply rate of air or other gas introduced into the combustion chamber and the flow rate of the gases generated in said combustion chamber and being led to the gas collection unit can be balanced and in that the conditions under which the combustion or thermal decomposition is carried out can be maintained unchanged from the start to end of the combustion or thermal decomposition, without allowing superor subatmospheric pressure to develop in the combustion chamber.
  • the apparatus is also advantageous in that the gases generated in the combustion chamber can be collected in the gas collection unit without substantially diluting them, and hence the analysis of gas composition can be achieved with high accuracy.
  • the temperature of the combustion chamber and the supply rate of air to said combustion chamber can optionally be adjusted and a variety of combustion conditions can be reproduced.
  • the mode of combustion of an inflammable material in the actual fire varies largely depending upon the state of fire. For instance, inflammable materials decompose at relatively low temperatures in the initial stage of combustion, generating gases which constitute smokes.
  • the gas generating states under various conditions can be known by changing the temperature of the combustion chamber. In the case of fire in buildings, air is short in most cases, whereas in the case of fire of wooden houses air is supplied sufficiently in most cases.
  • the combustion under various conditions can be reproduced by changing the supply rate of air to the combustion chamber in the light of the foregoing facts.
  • a burning and collection apparatus for combustion gases comprising combustion means having a combustion chamber for placing sample material therein and an electric heating furnace capable of adjustably heating said combustion chamber, gas supply means for supplying air or other gas into the combustion chamber at an adjustable rate, piston-cylinder type gas collection means having a cylinder communicating with the combustion chamber by a gas exhaust passage having a cooling effect sufficient to condense aqueous vapor and a piston disposed slidably in said cylinder, the gas being collected in a collection chamber defined by said piston and the interior of said cylinder, driving means for creating relative movement between the piston and cylinder at an adjustable predetermined speed and in a direction causing suction of the combustion gases into the collection chamber so that said suction is at a rate corresponding to the supply rate of air or other gas into the combustion chamber, the dimensions of said cylinder and piston being such that sealing is created between said cylinder and piston wherein gas is allowed to flow into said collection chamber between said cylinder and said piston to eliminate the pressure differential between the interior and exterior of said cylinder caused by the sucking of said combustion gases
  • a burning and collection apparatus for combustion gases comprising combustion means having a combustion chamber for burning a sample material received therein and a heating furnace for adjustably heating the sample material in said combustion chamber, gas supply means for leading to an inlet of said combustion chamber air or other gas at a predetermined and adjustable rate, dehumidizing means for removing moisture from the combustion gases exciting through an outlet of said combustion chamber by cooling said combustion gases and thus condensing an aqueous vapor contained therein, a cylinder for receiving the combustion gases from said dehumidizing means and a piston slidably fitted in said cylinder, said piston and said cylinder defining a collection chamber, driving means for displacing said piston at a predetermined and adjustable rate in a direction to cause suction of the combustion gases into said collection chamber, said piston being provided on its outer periphery with seal ring means which is in light contact with the inner surface of said cylinder, so that gas is allowed to flow past said ring into said collection chamber when a pressure differential is created across said ring due to the suction in
  • a method of producing and collecting combustion gases comprising:

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Sampling And Sample Adjustment (AREA)
US338194A 1972-03-07 1973-03-05 Burning and collection apparatus for combustion gases Expired - Lifetime US3904368A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2366272A JPS5235319B2 (enrdf_load_stackoverflow) 1972-03-07 1972-03-07
JP12090172A JPS5235554B2 (enrdf_load_stackoverflow) 1972-11-30 1972-11-30
JP12090072A JPS5235553B2 (enrdf_load_stackoverflow) 1972-11-30 1972-11-30

Publications (1)

Publication Number Publication Date
US3904368A true US3904368A (en) 1975-09-09

Family

ID=27284351

Family Applications (1)

Application Number Title Priority Date Filing Date
US338194A Expired - Lifetime US3904368A (en) 1972-03-07 1973-03-05 Burning and collection apparatus for combustion gases

Country Status (5)

Country Link
US (1) US3904368A (enrdf_load_stackoverflow)
AU (1) AU463559B2 (enrdf_load_stackoverflow)
CA (1) CA977181A (enrdf_load_stackoverflow)
FR (1) FR2175483A5 (enrdf_load_stackoverflow)
GB (1) GB1423232A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904606A (en) * 1987-02-27 1990-02-27 Shell Oil Company Method and apparatus for reductive decomposition and analysis of a sample
US4914037A (en) * 1987-02-27 1990-04-03 Shell Oil Company Method and apparatus for analysis of a sample for nitrogen
US4916077A (en) * 1987-02-27 1990-04-10 Shell Oil Company Method and apparatus for oxidative decomposition and analysis of a sample
US4950456A (en) * 1987-02-27 1990-08-21 Shell Oil Company Apparatus for analysis of a sample for sulphur
US20050000434A1 (en) * 2001-02-26 2005-01-06 Lee Chung J. Reactor for producing reactive intermediates for low dielectric constant polymer thin films
US20080307903A1 (en) * 2007-05-15 2008-12-18 O.I. Corporation D/B/A O.I. Analytical Gas Sample Collection and Analysis
US20100206043A1 (en) * 2009-02-18 2010-08-19 Factory Mutual Insurance Company Smoke evaluating device and related method
EP1599725A4 (en) * 2003-02-28 2013-09-25 Leco Corp ANALYZER WITH BALLAST CHAMBER WITH VARIABLE VOLUME AND ANALYSIS PROCESS
CN105928749A (zh) * 2016-07-15 2016-09-07 核工业理化工程研究院 环氧树脂固化过程中挥发气体的集气装置及集气方法
CN106226131A (zh) * 2016-09-19 2016-12-14 中国石油大学(华东) 一种用于污水中挥发性有机物的采样系统及其采样方法
CN107450622A (zh) * 2017-08-18 2017-12-08 曹阳 加热炉炉温智能控制系统及控制方法
CN105891081B (zh) * 2016-06-30 2018-06-26 华东师范大学 空气中微塑料浓度检测装置和方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226197A (en) * 1962-07-13 1965-12-28 Martin Sweets Company Inc Method and apparatus for determining c14
US3305318A (en) * 1964-01-09 1967-02-21 Lab Equipment Corp Rapid carbon determination
US3451779A (en) * 1964-12-02 1969-06-24 Yanagimoto Seisakusho Co Ltd Apparatus for elementary analysis
US3529937A (en) * 1966-03-10 1970-09-22 Kokusai Electric Co Ltd Quantitative analyzer of sulfur contents
US3542121A (en) * 1967-05-16 1970-11-24 Packard Instrument Co Inc Heat exchanging method for fluid material containing condensible vapor
US3811839A (en) * 1972-04-28 1974-05-21 Michigan Chem Corp Apparatus for the determination of flammability and smoke density of polymers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226197A (en) * 1962-07-13 1965-12-28 Martin Sweets Company Inc Method and apparatus for determining c14
US3305318A (en) * 1964-01-09 1967-02-21 Lab Equipment Corp Rapid carbon determination
US3451779A (en) * 1964-12-02 1969-06-24 Yanagimoto Seisakusho Co Ltd Apparatus for elementary analysis
US3529937A (en) * 1966-03-10 1970-09-22 Kokusai Electric Co Ltd Quantitative analyzer of sulfur contents
US3542121A (en) * 1967-05-16 1970-11-24 Packard Instrument Co Inc Heat exchanging method for fluid material containing condensible vapor
US3811839A (en) * 1972-04-28 1974-05-21 Michigan Chem Corp Apparatus for the determination of flammability and smoke density of polymers

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914037A (en) * 1987-02-27 1990-04-03 Shell Oil Company Method and apparatus for analysis of a sample for nitrogen
US4916077A (en) * 1987-02-27 1990-04-10 Shell Oil Company Method and apparatus for oxidative decomposition and analysis of a sample
US4950456A (en) * 1987-02-27 1990-08-21 Shell Oil Company Apparatus for analysis of a sample for sulphur
US4904606A (en) * 1987-02-27 1990-02-27 Shell Oil Company Method and apparatus for reductive decomposition and analysis of a sample
US20050000434A1 (en) * 2001-02-26 2005-01-06 Lee Chung J. Reactor for producing reactive intermediates for low dielectric constant polymer thin films
EP1599725A4 (en) * 2003-02-28 2013-09-25 Leco Corp ANALYZER WITH BALLAST CHAMBER WITH VARIABLE VOLUME AND ANALYSIS PROCESS
US8191437B2 (en) 2007-05-15 2012-06-05 O.I. Corporation Gas sample collection and analysis
US20080307903A1 (en) * 2007-05-15 2008-12-18 O.I. Corporation D/B/A O.I. Analytical Gas Sample Collection and Analysis
WO2009151864A1 (en) * 2008-05-15 2009-12-17 O. I. Corporation Gas sample collection and analysis
US8181504B2 (en) 2009-02-18 2012-05-22 Factory Mutual Insurance Company Smoke evaluating device and related method
US20100206043A1 (en) * 2009-02-18 2010-08-19 Factory Mutual Insurance Company Smoke evaluating device and related method
CN105891081B (zh) * 2016-06-30 2018-06-26 华东师范大学 空气中微塑料浓度检测装置和方法
CN105928749A (zh) * 2016-07-15 2016-09-07 核工业理化工程研究院 环氧树脂固化过程中挥发气体的集气装置及集气方法
CN106226131A (zh) * 2016-09-19 2016-12-14 中国石油大学(华东) 一种用于污水中挥发性有机物的采样系统及其采样方法
CN106226131B (zh) * 2016-09-19 2023-08-18 中国石油大学(华东) 一种用于污水中挥发性有机物的采样系统及其采样方法
CN107450622A (zh) * 2017-08-18 2017-12-08 曹阳 加热炉炉温智能控制系统及控制方法

Also Published As

Publication number Publication date
DE2310811B2 (de) 1976-11-25
AU463559B2 (en) 1975-07-31
FR2175483A5 (enrdf_load_stackoverflow) 1973-10-19
AU5301873A (en) 1974-09-12
DE2310811A1 (de) 1973-09-20
CA977181A (en) 1975-11-04
GB1423232A (en) 1976-02-04

Similar Documents

Publication Publication Date Title
US3904368A (en) Burning and collection apparatus for combustion gases
Barratt The preparation of standard gas mixtures. A review
US5935519A (en) Apparatus for the detection of sulfur
Nakagawa A new chemiluminescence-based sensor for discriminating and determining constituents in mixed gases
Cowie et al. Diffusion of methane and chloromethanes in air
GB2243685A (en) Conveying samples into the measuring chamber of a sensor
JPS6215823B2 (enrdf_load_stackoverflow)
US3838972A (en) Method and apparatus for sulfuric acid aerosol analysis
Bruce et al. Development of cleaner-burning brick kilns in Ciudad Juarez, Chihuahua, Mexico
Palmes et al. Explanation of pressure effects on a nitrogen dioxide (NO2) sampler
SE439069B (sv) Forfarande for kvantitativ bestemning av kol i organiska foreningar i vatten
EP3459620A1 (en) Apparatus for generating formaldehyde monomer vapor
CN210690531U (zh) 一种烟气排放连续检测装置
Shinohara et al. Field validation of an active sampling cartridge as a passive sampler for long-term carbonyl monitoring
EP3459621B1 (en) Method for generating formaldehyde monomer vapor
JPS5858386B2 (ja) 有機物を主体とする廃棄物の連続処理装置
Robertson et al. LXXI.—The evolution of nitrogen peroxide in the decomposition of guncotton
VanDell et al. Combustion and thermal destruction of hexanes in the presence of inorganic and organic chlorine
JPS5717848A (en) Measuring method of ingredient in solution
Meddle et al. Field method for the determination of aromatic primary amines in air. Part I. Generation of standard atmospheres of amines
US3415626A (en) Process for determining the free-oxygen content of a gas or dust mixture
Lescher Determination of Carbon and Hydrogen by Combustion
JPS6431032A (en) Flow rate control apparatus of dilution tunnel
Stokes et al. Hydrogen Cyanide-Fluorine–Oxygen Flame
CA2342940A1 (en) Method for measuring volatile organic compounds and a kit for same