DE438670C - Process for the production of a highly active carbon - Google Patents

Process for the production of a highly active carbon

Info

Publication number
DE438670C
DE438670C DEA39534D DEA0039534D DE438670C DE 438670 C DE438670 C DE 438670C DE A39534 D DEA39534 D DE A39534D DE A0039534 D DEA0039534 D DE A0039534D DE 438670 C DE438670 C DE 438670C
Authority
DE
Germany
Prior art keywords
production
active carbon
highly active
wood
bisulfate
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
DEA39534D
Other languages
German (de)
Inventor
Dr Sigmar Muench
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEA39534D priority Critical patent/DE438670C/en
Application granted granted Critical
Publication of DE438670C publication Critical patent/DE438670C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/342—Preparation characterised by non-gaseous activating agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

Verfahren zur Herstellung einer hochaktiven Kohle. Es ist bekannt, eine Entfärbungskohle dadurch herzustellen, daß man mit Natriumbisulfat versetztes Holz oder ähnliche Stoffe nach längerem Stehenlassen trocknet, an der Luft auf 3oo bis 5oo° erhitzt, mit Wasser zwecks Herauslösens des Bisulfats kocht, filtriert und schließlich bei 8oo bis rooo° unter Luftabschluß glüht (amerikanisches Patent i383755)- Die Wirksamkeit einer derart hergestellten Kohle ist aber recht schlecht.Process for the production of a high-active carbon. It is known, to produce a decolorizing carbon by adding sodium bisulfate Wood or similar material dries after standing for a long time, in the open air to 300 Heated to 500 °, boiled with water to dissolve the bisulfate, filtered and finally glows at 8oo to rooo ° in the absence of air (American patent i383755) - The effectiveness of charcoal produced in this way is, however, very poor.

Es wurde nun die überraschende Beobachtung gemacht, daß man eine hervorragend aktive Kohle - und zwar in einem Arbeitsgang -- erhält, wenn man Holz oder andere cellulosehaltige Stoffe mit Bisulfat imprägniert, auf Temperaturen oberhalb 5oo° erhitzt und alsdann auslaugt. Hierbei erhält man nebenbei noch eine Lösung von Schwefelnatrium, aus der in bekannter Weise das feste Produkt erhalten werde« kann. Der Vorteil des neuen Verfahrens bestellt in der einfacheren Herstellungsweise, dem Erhalt eines wertollen Nebenproduktes und besonders in der Gewinnung einer hervorragend aktiven Kohle. -Beispiel. Zerkleinertes Kiefernholz wird getränkt mit konzentrierter Natriumbisulfatlauge, getrocknet und vorteilhaft bei Luftabschluß bei 6oo bis rooo° etwa z Stunden geglüht. Nach dem Erkalten wird die Kohle mit Wasser ausgelaugt. Beim Verdampfen :ler Lange bleibt sehr hochwertiges Schwefelnatrium als Rückstand. Die Kohle kann entweder direkt oder nach Auswaschen mit Salzsäure getrocknet werden. Sie zeigt ein hervorragendes Absorptions- und Entfärbungsvermögen.The surprising observation has now been made that one is excellent active charcoal - in one operation - is obtained when wood or something else is used cellulose-containing substances impregnated with bisulphate, to temperatures above 500 ° heated and then leached. Here you also get a solution of sodium sulphide, from which the solid product can be obtained in a known manner. The advantage of the new process ordered in the simpler production method, the receipt of a valuable by-product and especially in the extraction of an excellently active one Money. -Example. Crushed pine wood is soaked with concentrated sodium bisulphate lye, dried and advantageously calcined with the exclusion of air at 600 to rooo ° for about z hours. After cooling, the coal is leached with water. When evaporating: longer very high quality sodium sulphide remains as a residue. The coal can either dried directly or after washing with hydrochloric acid. She shows an excellent Absorbance and discoloration capacity.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer hochaktiven Kohle unter gleichzeitiger Gewinnung von Schwefelnatrium, dadurch gekennzeichnet, daß man Holz oder andere cellulosehaltige Stoffe mit Bisulfat imprägniert, bei Temperaturen oberhalb 500° glüht und die erhaltene Masse auslaugt.PATENT CLAIM: Process for the production of a highly active carbon with simultaneous recovery of sodium sulphide, characterized in that wood or other cellulose-containing substances are impregnated with bisulfate at temperatures Glows above 500 ° and leaches the mass obtained.
DEA39534D 1923-03-04 1923-03-04 Process for the production of a highly active carbon Expired DE438670C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA39534D DE438670C (en) 1923-03-04 1923-03-04 Process for the production of a highly active carbon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA39534D DE438670C (en) 1923-03-04 1923-03-04 Process for the production of a highly active carbon

Publications (1)

Publication Number Publication Date
DE438670C true DE438670C (en) 1926-12-24

Family

ID=6931414

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA39534D Expired DE438670C (en) 1923-03-04 1923-03-04 Process for the production of a highly active carbon

Country Status (1)

Country Link
DE (1) DE438670C (en)

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