DE708968C - Process for producing a desiccant - Google Patents

Process for producing a desiccant

Info

Publication number
DE708968C
DE708968C DEA90330D DEA0090330D DE708968C DE 708968 C DE708968 C DE 708968C DE A90330 D DEA90330 D DE A90330D DE A0090330 D DEA0090330 D DE A0090330D DE 708968 C DE708968 C DE 708968C
Authority
DE
Germany
Prior art keywords
desiccant
phosphorus pentoxide
grains
carrier
producing
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
Application number
DEA90330D
Other languages
German (de)
Inventor
Dipl-Ing Hans Friedrich Gold
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft 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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to DEA90330D priority Critical patent/DE708968C/en
Application granted granted Critical
Publication of DE708968C publication Critical patent/DE708968C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

Verfahren zur Herstellung eines Trockenmittels Die Erfindung bezieht sich auf ein Trokkenmittei für Luft und andere Gase. Es ist blereits bekannt, zur Trocknung hygroskopische Chemikalien auf poröses Tr.ägermaterial aufzubringen, um zu verhüten, daß bei der Trocknung, .also bei Wasseraufnahme des Chemikals, das Trockenmittel zerfließt und die Poren zwischen den einzelnen Körnern verstopft. Ein sehr energisch trocknendes Chemikal, nämlich das Phosphorpentoxyd, das man sonst im allgemeinen nur in Pulverform auf von der Luft überströmten Schalen anwendet, läßt sich nicht wie die anderen Chemikalien im gelösten Zustand auf einem porösen Träger unterbringen, weil es bei Anwesenheit von Wasser Metaphosphors.äure bildet und nicht mehr als Trockenmittel wirkt. Versuche, Idas vollkommen trokkene Pentoxyd auf einem vollkommen trokkenen Träger beispielsweise durch Einwälzen zu befestigen, mißlangen. Um aber Phosphorpentoxyd in ähnlicher Weise wie das andere hygroskopische Material verwenden zu können, hat man saugfahige Körner, z.B. Bims, mit Metaphosphorsäure getränkt und die klebrige Wirkung der Oberfläche der getränkten Körner dazu benutzt, das pulverförmige Phosphorpentoxyd auf die Körner durch Schütteln mit Pentoxyd festhaftend aufzubringen. Die Vorbehandlung der Körner bringt den Nachteil mit sich, daß die Saugfähigkeit der Trägerkörner ganz oder zum großen Teil verloren geht. Ein weiterer Nachteil ist die umständliche Herstellungsweise im zweistufigen Verfahren.Method of Making a Desiccant The invention relates to focus on a drying agent for air and other gases. It is already known for Drying to apply hygroscopic chemicals to porous carrier material in order to to prevent that when drying, .also when the chemical absorbs water, the Desiccant dissolves and clogs the pores between the individual grains. A very vigorous drying chemical, namely phosphorus pentoxide, which is otherwise generally only used in powder form on bowls overflowing with air, Like the other chemicals, it cannot be dissolved in a porous state Place the carrier because it forms metaphosphoric acid in the presence of water and no longer acts as a desiccant. Try Ida's perfectly dry pentoxide to be attached to a completely dry support, for example by rolling, failed. But around phosphorus pentoxide in a manner similar to the other hygroscopic To be able to use material, one has absorbent grains, e.g. pumice, with metaphosphoric acid soaked and the sticky effect of the surface of the soaked grains used to the powdery phosphorus pentoxide adhering firmly to the grains by shaking with pentoxide to raise. The pretreatment of the grains has the disadvantage that the Absorbency of the carrier grains is completely or largely lost. Another The disadvantage is the cumbersome production method in a two-stage process.

Gemäß der Erfindung werden dieseNachteile dadurch vermieden, daß man luftfeuchtes Trägermaterial verwendet und dieses mit pulverförmigem Phosphorpentoxyd schüttelt. According to the invention these disadvantages are avoided in that humid carrier material is used and this with powdered phosphorus pentoxide shakes.

Die am Trägermaterial anhaftendlen geringen W.asserdampfspuren reichen nämlich vollkommen dazu aus, bei Berührung des pulverförmigen Phosphorpentosyds mit dem Träger eine Klebeschicht aus Metaphosphorsäure zu bilden, an der das übrige Phos phorpentoxyd haftet.The slight traces of water vapor adhering to the carrier material are sufficient namely perfectly to it, when touching the powdery Phosphorus pentosyds to form an adhesive layer of metaphosphoric acid with the carrier, on which the rest Phosphorus pentoxide adheres.

Diese Herstellung hat den Vorzug, das Innere des Trägerkorns für die bei der Trocknung sich bildende Metaphosphorsäure genügend aufnahmefähig bleibt und daß nur ein Verfahrensschritt notwendig ist. This production has the advantage of using the inside of the carrier grain for the metaphosphoric acid that forms during drying remains sufficiently absorbent and that only one process step is necessary.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines auf einem Träger aufgebrachten Trockenmittels, das als wirksame Trockensubstanz Phosphorpentoxyd enthält, dadurch gekennzeichnet, daß das körnige Trägermaterial, z. B. Bims, im luft feuchten Zustand mit pulverförmigem Phosphorpentoxyd geschüttelt wird. PATENT CLAIM: Process for the production of a on a carrier applied desiccant, the effective dry substance phosphorus pentoxide contains, characterized in that the granular carrier material, e.g. B. pumice, im air-moist state is shaken with powdered phosphorus pentoxide.
DEA90330D 1939-10-07 1939-10-07 Process for producing a desiccant Expired DE708968C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA90330D DE708968C (en) 1939-10-07 1939-10-07 Process for producing a desiccant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA90330D DE708968C (en) 1939-10-07 1939-10-07 Process for producing a desiccant

Publications (1)

Publication Number Publication Date
DE708968C true DE708968C (en) 1941-08-01

Family

ID=6950774

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA90330D Expired DE708968C (en) 1939-10-07 1939-10-07 Process for producing a desiccant

Country Status (1)

Country Link
DE (1) DE708968C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974146C (en) * 1942-12-04 1960-09-29 Basf Ag Process for cleaning gases or liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974146C (en) * 1942-12-04 1960-09-29 Basf Ag Process for cleaning gases or liquids

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