DE346324C - - Google Patents

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Publication number
DE346324C
DE346324C DENDAT346324D DE346324DA DE346324C DE 346324 C DE346324 C DE 346324C DE NDAT346324 D DENDAT346324 D DE NDAT346324D DE 346324D A DE346324D A DE 346324DA DE 346324 C DE346324 C DE 346324C
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DE
Germany
Prior art keywords
dust
gases
admixtures
particles
gas
Prior art date
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DENDAT346324D
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German (de)
Publication of DE346324C publication Critical patent/DE346324C/de
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions
    • G01N15/0656Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth 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)

Description

Verfahren zum messen feiner fester oder tropfbar flüssigerBeimengungen in Gasen. Die bisher bekannten Verfahren zum Messen feiner Beimengungen in Gasen, z. B. von Staubteilchen in Abgasen, oder von tropfbar flüssigen Teilchen in Gasen, wie z. B. Teer oder Schwefelsäure, ergeben falsche Werte oder sind; in der Praxis mit anderen Mißständen verknüpft. Man benutzte u. a. bisher zum Messen von Staub in Abgasen ein Verfahren, -,vobei eine mit klebriger Oberfläche versehene glatte Platte in den Gasstrom hineingebracht und die daran haftende Staubmenge gewogen wurde. Der praktische Versuch beweist, daß bei größeren Gasgeschwindigkeiten das Resultat vollständig unrichtig wird, da sich ein ruhender Luftkegel vor der Platte bildet. Bei einem anderen Verfahren saugt man das staubhaltige Gas. durch feine Filter und mißt die darin zurückgehaltene Staubmenge. Hierbei macht die Zurückhaltung ganz feiner Staubteilchen große Schwierigkeiten; ferner wird durch die eingebauten Filter der Widerstand gegen die Gasbewegung wesentlich verändert, wodurch ebenfalls Fehlerquellen entstehen.Method for measuring fine, solid or liquid additions in gases. The previously known methods for measuring fine additions in gases, z. B. of dust particles in exhaust gases, or of dripping liquid particles in gases, such as B. tar or sulfuric acid, give incorrect values or are; in practice linked to other grievances. One used inter alia. previously for measuring dust in exhaust gases a process -, whereby a smooth surface provided with a sticky surface The plate was placed in the gas flow and the amount of dust adhering to it was weighed became. The practical experiment shows that at higher gas velocities the The result is completely incorrect, as there is a static cone of air in front of the plate forms. Another method involves sucking in the dusty gas. through fine Filter and measures the amount of dust retained in it. Here makes the restraint very fine dust particles great difficulties; furthermore, through the built-in Filters the resistance to gas movement changed significantly, which also Sources of error arise.

Das vorliegendeVerfahren besteht darin., daß aus dem Gase, dessen Beimengungen an festen oder tropfbar flüssigen Teilchen gemessen werden sollen, ein Zweigstrom entnommen wird, der durch einen Niederschlagsapparat geschickt wird, welcher mittels hochgespannter Elektrizität die Teilchen aus dem Zweigstrom niederschlägt. Diese Teilchen werden dann gewogen oder gemessen. Das elektrische Hochspannungsrniederschlagsverfahren an sich ist bekannt; es kann jedes oder bekannten Verfahren hierzu verwandt werden. Bekanntlich wird in Hochspannungsniederschlagsapparaten auch der allerfeinste Staub niedergeschlagen, ferner zeichnen sich diese Apparate dadurch aus, daß der Durchgangswiderstand für ,das Gas beliebig gering .gehalten werden kann. Die Anwendung dieser Niederschlagsmethoden zum: Messen von feinen Beimengungen ergibt daher ein ganz genaues Resultat. Man kann in der Weise die Messung vornehmen, daß -der durch denApparat hindurchgeschickte Zweigstrom gemessen wird und das niedergeschlagene Gut, woraus sich ohne weiteres das Verhältnis der Beimengungen ergibt. Man kann .die Messung auch in der Weise vornehmen"daß das Verhältnis der Menge des abgezweigten Gasstromes zu dem Gesamtgasstrom ein für allemal festgestellt wird und der Meßapparat dauernd für eine beliebige Zeitdauer eingeschaltet bleibt. Die im Meßapparat niedergeschlagene Staubmenge multipliziert mit dieser Verhältniszahl ergibt dann ohne weiteres die Gesamtstaubmenge, die während der ganzen Meßzeit in den abgeführten Gasen enthalten war.The present process consists in that from the gas, its Admixtures of solid or dripping liquid particles are to be measured, a branch stream is taken, which is sent through a precipitation apparatus, which, by means of high-voltage electricity, knocks down the particles from the branch current. These particles are then weighed or measured. The high voltage electrical precipitation method in itself is known; any or any known method can be used. It is well known that the very finest dust is found in high-voltage precipitation apparatus down, these devices are also characterized by the fact that the volume resistance for, the gas can be kept as low as desired. The application of these precipitation methods for: Measuring fine additions therefore gives a very precise result. Man can carry out the measurement in such a way that the sent through the device Branch current is measured and the deposited good, from which easily the ratio of the admixtures results. The measurement can also be done in this way make "that the ratio of the amount of the diverted gas flow to the total gas flow is determined once and for all and the measuring apparatus continuously for any one Remains switched on for a period of time. The amount of dust precipitated in the measuring apparatus multiplied with this ratio then results easily the total amount of dust that during was contained in the discharged gases throughout the measurement time.

Claims (1)

PATENT-ANSPRUCI3: Verfahren zum Messen feiner fester oder tropfbar flüssiger Beimengungen in Gasen in einem abgezweigten Teilstrom, dadurch gekennzeichnet, @daß' die Beimengungen in. an sich bekannter Weise durch hochgespannte Elektrizität niedergeschlagen und gemessen werden.PATENT-ANSPRUCI3: Method for measuring fine solid or dripping liquid admixtures in gases in a branched off partial flow, characterized in that, @ that 'the admixtures in a manner known per se through high-voltage electricity to be knocked down and measured.
DENDAT346324D Active DE346324C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110094452A1 (en) * 2006-04-11 2011-04-28 Life-Science Innovations, Llc Egg Incubation Transport System and Methods Regarding Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110094452A1 (en) * 2006-04-11 2011-04-28 Life-Science Innovations, Llc Egg Incubation Transport System and Methods Regarding Same

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