DE692568C - Process for cleaning crude benzene using bismuth chloride in the heat - Google Patents

Process for cleaning crude benzene using bismuth chloride in the heat

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Publication number
DE692568C
DE692568C DE1935D0074506 DED0074506D DE692568C DE 692568 C DE692568 C DE 692568C DE 1935D0074506 DE1935D0074506 DE 1935D0074506 DE D0074506 D DED0074506 D DE D0074506D DE 692568 C DE692568 C DE 692568C
Authority
DE
Germany
Prior art keywords
bismuth chloride
crude benzene
heat
benzene
cleaning
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
DE1935D0074506
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German (de)
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.)
GEORG KOWALSKI DR
Original Assignee
GEORG KOWALSKI DR
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 GEORG KOWALSKI DR filed Critical GEORG KOWALSKI DR
Priority to DE1935D0074506 priority Critical patent/DE692568C/en
Application granted granted Critical
Publication of DE692568C publication Critical patent/DE692568C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Reinigung von Rohbenzol mittels Wismutehlorid in der Wärme Es ist bereits bekannt, zur Reinigung von K ohlenwasiserstoffölen wasserfreie Wisrnuthalogenide zu verwenden.Process for the purification of crude benzene using bismuth chloride in the Heat It is already known to purify hydrocarbon oils anhydrous Wisrnuthalogenide to use.

Es wurde nun festgestellt, daß zur Reinigung von Rohbenzol auch kristallwasserhaltiges Wismutchlorid oder dessen wäßrige Lösungen verwendet werden können. Die Reinigung wird hierdurch erheblich verbilligt, die Einwirkung .auf das Benzol verläuft gemäßigter, und die Motorenbenzolausbeute wird größer. Dem Wismutchlorid können bei der Reinigung andere Chloride zugesietzt werden. Zur besseren Verteilung des Chlorids können inerte Stoffe, wie Sand, Graphit, Ruß, zugemi;sicht werden. F,ür die Bindung der gebildeten Harze ist !der Zusatz von adsorbierenden Stoffen, wie Bleicherde, vorteilhaft. Zur Reinigung gelangen das Rohbenzol oder dessen Fraktionen, wie sie auf der Kokerei bzw. bei der Teerdestillation anfallen. Auch Innenabsaugbenzol kann mixt Erfolg gereinigt werden. Phenoleoder Phenole und Basen brauchen: vor der Reinigung nicht entfernt werden. Eine Nachbehandlung des gereinigten Benzols reit Natronlauge ist zweckmäßig zu vermeiden. Dagegen kann man mit Wasser und Südalö:sung waschen. ihm bei dem erfindungsgemäß in flüssiger Phase und in. Rührgefäßen durchgeführten Verfahren die notwendige Katälysatormenge möglichst klein zu halten, ist einte :gründliche Durchmischung erforderlich. Nach erfolgter Reinigung wird:das Benzol vom Katalysator ,getrennt und anschließend destilliert. Die Destillationstemperaturen sollen möglichst 13o° nicht überschreiten. Die Diestillatio:n wird aus diesem Grunde unter Vakuum oder mit Wasserdampf durchgeführt.It has now been found that for the purification of crude benzene also containing water of crystallization Bismuth chloride or its aqueous solutions can be used. The cleaning is considerably cheaper, the effect on the benzene is more moderate, and the engine benzene yield increases. The bismuth chloride can be used in cleaning other chlorides are added. Inert can be used for better distribution of the chloride Substances such as sand, graphite, soot, can be added. F, for the binding of the educated Resins, the addition of adsorbing substances, such as fuller's earth, is advantageous. To the The crude benzene or its fractions get cleaned, as they do on the coking plant or arise during tar distillation. Interior suction benzene can also mix success getting cleaned. Phenols or phenols and bases need: not before cleaning removed. A post-treatment of the purified benzene is sodium hydroxide solution expedient to avoid. On the other hand, you can wash with water and a southern solution. him in the process carried out according to the invention in the liquid phase and in stirred vessels Keeping the necessary amount of catalyst as small as possible is one thing: thorough Mixing required. After cleaning: the benzene is removed from the catalyst , separated and then distilled. The distillation temperatures should if possible Do not exceed 13o °. The distillation is for this reason under vacuum or carried out with steam.

Es ist zwar ein Reinigungsverfahren mittels wäßriger Salzsäure und freien Wismuts bekannt. Da sich jedoch Wismut nicht in verdünnter Salzsäure löst, wird Wismutchlorid bei diesem bekannten Verfahren nicht wirksam. Im übrigen liefert das bekannte Verfahren schlechtere Raffinationsergebnisse als das vorliegende. Beispiel 3 kg Rohbenzol werden irn Rührautoklaven bei i 2o' mit z, 5 % kristallwasserhaltigem Wismutchlorid behandelt. Nach Trennung des; Benzols vom Rückstand wird ersteres mit Wasserdampf destilliert. Das erhaltene Motorenbenzol, 93,20l0, ist wasserhell und besitzt einen Harztest von 2,3 mg.A cleaning process using aqueous hydrochloric acid and free bismuth is known. However, since bismuth does not dissolve in dilute hydrochloric acid, bismuth chloride is not effective in this known method. In addition, the known process gives poorer refining results than the present one. EXAMPLE 3 kg of crude benzene are treated in a stirred autoclave at i 20 'with about 5% bismuth chloride containing water of crystallization. After separating the; Benzene from the residue is distilled the former with steam. The motor benzene obtained, 93.2010, is water-white and has a resin test of 2.3 mg.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Reinigung von Rohbenzol mittels Wismutchlorids in der Wärme, dadurch gekennzeichnet, @daß das Rohbenzol, gegehenenfalls unter Druck,` mit kristallwasserhaltigem Wismutchlorid oder dessen wäßriger Lösung behandelt wird. PATENT CLAIMS: i. Process for the purification of crude benzene by means of Bismuth chloride in the heat, characterized in that the crude benzene, if necessary under pressure, with bismuth chloride containing water of crystallization or its aqueous solution is treated. 2. Verfahren nach Anspruch i; dadurch ,gekennzeichnet, daß inerte Stoffe, wie Sand, Graphit, Ruß, und bzw. oder adso°rbierende Mittel; wie Bleicherde, dem Wismutchlorid zugesetzt werden.2. The method according to claim i; characterized in that inert Substances such as sand, graphite, soot, and / or adsorbing agents; like fuller's earth, be added to the bismuth chloride.
DE1935D0074506 1935-11-29 1935-11-29 Process for cleaning crude benzene using bismuth chloride in the heat Expired DE692568C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1935D0074506 DE692568C (en) 1935-11-29 1935-11-29 Process for cleaning crude benzene using bismuth chloride in the heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1935D0074506 DE692568C (en) 1935-11-29 1935-11-29 Process for cleaning crude benzene using bismuth chloride in the heat

Publications (1)

Publication Number Publication Date
DE692568C true DE692568C (en) 1940-06-22

Family

ID=7061676

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1935D0074506 Expired DE692568C (en) 1935-11-29 1935-11-29 Process for cleaning crude benzene using bismuth chloride in the heat

Country Status (1)

Country Link
DE (1) DE692568C (en)

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