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Method of purifying crude petroleum and primary refining products
| Details |
Inventors: Nametkin, Nikolai Sergeevich; Gubin, Sergel Pavlovich; Tjurin, Vladimir Dmitrievich; Fedorov, Viktor Viktorovich; Larionov, Leonid Ivanovich; Kozin, Vladimir Alexandrovich; Zhadanovsky, Naum Borisovich; Barashkov, Ruslan Yakovlevich;
Assignee:
Primary Examiner: Crasanakis; G. J.
Assistant Examiner:
Attorney, Agent or Firm: Haseltine, Lake & Waters
A method of purifying crude petroleum and primary refining products of their sulfur, sulfur compounds, nitrogen- and oxygen-containing compounds which comprises treating crude petroleum or virgin petroleum stocks with complexes or salts of transition metals (.pi. -complexes of transition metals), salts or .pi. -allylic complexes of platinum metals and carbonyl complexes of transition metals at a temperature of 80.degree.-120.degree. C, followed by separating the purified target product from the resulting reaction mixture. stability The method of the invention makes it possible to effect petroleum product purification as a single-stage process and, in contrast to the available methods, dispenses with the employment of hydrogen, catalysts, and aqueous alkalies. The petroleum products treated by the present method are completely free of hydrogen, sulfur, mercaptan and disulfide sulfur, the content of total sulfur being substantially reduced (by a factor of 2 to 6), another beneficial effect being a 20-50% reduction of the content of nitrogen- and oxygen-containing compounds and naphthenic compounds, thereby enhancing essentially the marketability of petroleum products and improving such properties as colour, odor, stability and gum formation resistance. |
|
DETAILED DESCRIPTION We claim: 1.
A method of purifying crude petroleum and primary refining products of sulfur, sulfur compounds, nitrogen- and oxygen-containing compounds and naphthenic acid impurities contained therein comprising (a) treating in the liquid phase said crude petroleum or primary refining products at a temperature of from 80.
degree.
to 120.
degree.
C with a metallic compound selected from the group consisting of (1) .
pi.
-complexes, (2) .
pi.
-allylic complexes and (3) carbonyl complexes of transition metal elements selected from Groups Vb, VIb, VIIb and VIII of the Periodic Table of Elements and (4) salts selected from the group consisting of RhCl.
sub.
3.
sup.
.
3H.
sub.
2 O, Na.
sub.
2 PtCl.
sub.
4, Na.
sub.
2 PtCl.
sub.
6 and (C.
sub.
6 H.
sub.
5 CN).
sub.
2 PdCl.
sub.
2 to form complexes of said metallic compound with said impurities and (b) separating said complexes from the resulting reaction mixture by treating said mixture with a B-diketone chelating agent reactive with said complexes at a temperature of from 100.
degree.
C to 200.
degree.
C.
and (C) separating said complexes from said reaction mixture.
2.
A method as claimed in claim 1 wherein the .
pi.
-complexes of transition metal elements are selected from the group consisting of nickelocene, bis-(ethylbenzene) chromium, bis-cyclopentadienyltungstentricarbonyl and cyclopentadienylcobaltdicarbonyl.
3.
A method as claimed in claim 1 wherein the carbonyl complexes of transition metal elements are selected from the group consisting of Fe Co, Ni, Cr, Mo, W, V and Mn carbonyls and mixtures thereof.
4.
A method as claimed in claim 1 which includes the step of distilling off the purified product from the reaction mixture of step (a).
5.
A method as claimed in claim 1 which includes the step of filtering the thus treated reaction mixture of step (a) through an active alumina bed.
6.
A method as claimed in claim 1 which includes the step of separating the purified product from the reaction mixture of step (b) by steam distillation.
7.
A method as claimed in claim 1 which includes the step of filtering the thus-treated reaction mixture of step (b) through an aluminosilicate adsorbent bed
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Molecular Biology 
