AT95167B - Process for the recovery of volatile solvents in the manufacture of rubber, celluloid or similar products. - Google Patents

Process for the recovery of volatile solvents in the manufacture of rubber, celluloid or similar products.

Info

Publication number
AT95167B
AT95167B AT95167DA AT95167B AT 95167 B AT95167 B AT 95167B AT 95167D A AT95167D A AT 95167DA AT 95167 B AT95167 B AT 95167B
Authority
AT
Austria
Prior art keywords
recovery
rubber
manufacture
celluloid
volatile solvents
Prior art date
Application number
Other languages
German (de)
Inventor
Harry Schmidt
Original Assignee
Harry Schmidt
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 Harry Schmidt filed Critical Harry Schmidt
Application granted granted Critical
Publication of AT95167B publication Critical patent/AT95167B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/06—Solidifying liquids
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1487—Removing organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B01D2257/7027—Aromatic hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • 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
    • B01D53/002—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 by condensation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Gas Separation By Absorption (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  Verfahren zur   Wiedergewinnung flüchtiger Lösungsmittel   bei der Herstellung von
Kautschuk-, Zelluloid- od. dgl. Erzeugnissen. 



   Das den Gegenstand der Erfindung bildende Verfahren zur Wiedergewinnung flüchtiger Lösungmittel besteht darin, dass die Entwicklung und Absorption der Dämpfe in demselben Raum erfolgt. Das Verfahren eignet sich besonders gut zur Rückgewinnung des Lösungsmittels (z. B. Benzin) bei der Her- 
 EMI1.1 
 würde. Diese starke   Verdünnung   erschwert aber die Rückgewinnung des Benzins in besonderen   Ab-   sorptionsapparaten so sehr, dass fast allgemein auf eine Rückgewinnung des   Lösungsmittels   verzichtet wird und die benzinhaltige Luft durch Ventilatoren direkt ins Freie befördert wird. 



   Nach dem neuen Verfahren wird das Absorptionsmittel (für Benzin z. B.   Paraffinöl)   in den Trockenraum selbst -gebracht und möglichst gleichmässig über diesen verteilt. Am einfachsten wäre ein direktes Einspritzen, ähnlich der Einspritzkondensation bei Dampfmaschinenanlagen. Die, es Verfahren hat aber verschiedene Mängel, da nämlich   der Überschuss   an Kondensationsmitteln   sehr gross   und die Zeitdauer der Einwirkung des Lösungsmittels auf das Gasgemisch sehr kurz ist, auch werden Apparatur und Fabrikat leicht durch verspritztes und verstäubtes Lösungsmittel verunreinigt.

   Besser ist es, das Lösungsmittel an Stäben, Fäden, Drähten, Geweben   mw.   entlang laufen   zi ! lassen.   Die   Durclaufgesehwindigkeit   des   Lösungsmittels   lässt sich dann durch Regelung des Flüssigkeitsstromes und entsprechende-senkrechte, resp.   schräge-Lage   der   Führungskörper   so einstellen, dass die   Absoiptionstlüssigkeit   unten (entsprechend dem vorhandenen   Partialdruck oder Sättigungsgrad   der Luft) gesättigt mit Lösungsmitteln ankommt. Als   Fühumgskörper   für das Absorptionsmittel kommen in Betracht : Stäbe, Fäden, Drähte, Drähte in Schraubenspiralen, Drahtgewebe, Drahtgeflecht, grobe Gewebe oder Geflechte (wie   z.   B.

   Fischernetze), gelochte Bleche, Streckmetall usw. Auf alle Fälle müssen die   Führungskörper   möglichst ungehinderte Luftbewegnng erlauben. Bei Verwendung von Drähten in Schraubenform haben die Drähte vorteilhaft einen halbrunden oder viereckigen oder flachen Querschnitt, damit die Spiralen grössere Flüssigkeitsmengen halten können. Zur Not, wenn auch weniger wirksam, können die Wände des Trockenraumes oder auch glatte oder durchbrochene   Zwischenwände   als   Führungskörper   verwendet werden. 



   Das das Lösungsmittel enthaltende Absorptionsmittel wird in üblicher Weise durch Destillation   von dem Lösungsmittel (Benzin, Benzol od. dgl. ) befreit und erreut zur Absorption wieder verwendet.   



   Das vorliegende Verfahren eignet sich zur Rückgewinnung stark verdünnter Dämpfe, z. B. bei der
1. Herstellung von Gummigegenständen aus oder unter Verwendung von   Gummilösung,   also Herstellung getauchter Gummigegenstände, mit Gummilösung imprägnierter Stoffe usw. 



   2. Fabrikation von Zelluloid, Zellon,   Schiesspulver   usw.   (Riiekgewinnung   von Alkohol. Äther, Azeton, Essigäther usw.)
Auch wenn es sich nicht um   stark verdünnte Dämpfe   handelt, ist das vorliegende Verfahren mit Vorteil anzuwenden. In allen Fällen zeichnet sich das Verfahren durch geringe Raumbeanspruchung und einfache Apparatur aus. Der Hauptwert des Verfahrens kommt immer dann zur Geltung, wenn bei einer Fabrikation ein wertvolles   Lösungsmittel   durch   LuftÜberschuss   verdunstet wird und dann   zurück-   gewonnen werden soll. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the recovery of volatile solvents in the manufacture of
Rubber, celluloid or similar products.



   The method for recovering volatile solvents, which is the subject of the invention, consists in that the evolution and absorption of the vapors take place in the same space. The process is particularly suitable for the recovery of the solvent (e.g. gasoline) in the
 EMI1.1
 would. This strong dilution makes the recovery of the gasoline in special absorption devices so difficult that recovery of the solvent is almost universally dispensed with and the air containing gasoline is conveyed directly into the open by fans.



   According to the new process, the absorbent (for gasoline e.g. paraffin oil) is brought into the drying room itself and distributed as evenly as possible over it. The simplest would be direct injection, similar to injection condensation in steam engine systems. However, the process has various shortcomings, namely because the excess of condensing agents is very large and the duration of the action of the solvent on the gas mixture is very short, and the apparatus and product are easily contaminated by sprayed and atomized solvents.

   It is better to run the solvent along rods, threads, wires, fabrics, etc. along! to let. The flow rate of the solvent can then be adjusted by regulating the liquid flow and corresponding vertical, respectively. Adjust the inclined position of the guide body so that the absorption liquid arrives at the bottom (depending on the existing partial pressure or degree of saturation of the air) saturated with solvents. The following can be used as a connecting element for the absorbent: rods, threads, wires, wires in spiral spirals, wire mesh, wire mesh, coarse mesh or braids (e.g.

   Fishing nets), perforated sheets, expanded metal, etc. In any case, the guide bodies must allow air movement as unhindered as possible. When using wires in helical form, the wires advantageously have a semicircular or square or flat cross-section so that the spirals can hold larger amounts of liquid. In an emergency, even if less effective, the walls of the drying room or even smooth or perforated partitions can be used as guide bodies.



   The absorbent containing the solvent is freed from the solvent (gasoline, benzene or the like) in the customary manner by distillation and reused for absorption.



   The present process is suitable for the recovery of very dilute vapors, e.g. B. at the
1. Manufacture of rubber objects from or using rubber solution, i.e. production of dipped rubber objects, fabrics impregnated with rubber solution, etc.



   2. Manufacture of celluloid, cellon, gunpowder, etc. (recovery of alcohol, ether, acetone, vinegar ether, etc.)
Even if the vapors are not very dilute, this method can be used to advantage. In all cases, the process is characterized by low space requirements and simple equipment. The main value of the process always comes into its own when a valuable solvent is evaporated by excess air in a production process and is then to be recovered.

** WARNING ** End of DESC field may overlap beginning of CLMS **.


    

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Wiedergewinnung flüchtiger Lösungsmittel bei der Herstellung von KautschukZelluloid-od. dgl. Erzeugnissen, dadurch gekennzeichnet, dass die Verdunstung des Lösungsmittels und die Absorption desselben in einem Raum geschehen, durch den die Absorptionsflüssigkeit in einem kontinuierlichen Strom hindurchgeleitet wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the recovery of volatile solvents in the manufacture of rubber, celluloid or Like. Products, characterized in that the evaporation of the solvent and the absorption of the same take place in a space through which the absorption liquid is passed in a continuous flow. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT95167D 1915-08-07 1920-06-24 Process for the recovery of volatile solvents in the manufacture of rubber, celluloid or similar products. AT95167B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE512529X 1915-08-07

Publications (1)

Publication Number Publication Date
AT95167B true AT95167B (en) 1923-12-10

Family

ID=6548128

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95167D AT95167B (en) 1915-08-07 1920-06-24 Process for the recovery of volatile solvents in the manufacture of rubber, celluloid or similar products.

Country Status (4)

Country Link
AT (1) AT95167B (en)
CH (1) CH94848A (en)
FR (1) FR512529A (en)
GB (1) GB141739A (en)

Also Published As

Publication number Publication date
FR512529A (en) 1921-01-25
GB141739A (en) 1920-12-09
CH94848A (en) 1922-06-01

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