DE971343C - Process for removing vanadium and / or sodium from crude petroleum or petroleum products - Google Patents

Description

ISSUED JANUARY 15, 1959

A 18212 IVc 123 b

Addition to patent 970

The subject of the main patent is a process for the removal of sodium and vanadium from crude petroleum or petroleum products, wherein the crude petroleum or petroleum products with bauxite in the presence of hydrogen below ^{temperatures between 371 and 427 0} , preferably at 415 °, and between 57 and pressures lying 71 kg / cm ² , preferably 7.1 kg / cm ² , are treated so that sodium and vanadium are retained by the bauxite.

According to a preferred ^{mode of operation, 714 m 3 of} hydrogen per m ^{3 of} starting oil are used and the work is carried out at a space flow rate of the liquid starting oil of 1 V / V / hour, based on bauxite. In the absence of vanadium, temperatures between 343 and 454 ⁰ , in particular at 415 °, and pressures between 8 and 15 kg / cm ² are preferably used.

It has now been found that steels of bauxite with a 5 to 15 percent by weight Fern-

oxide and aluminum oxide can treat existing contact material and the treated oil in the process if necessary then feed to a hydrogenation zone to remove organically bound sulfur can. Since natural bauxite catalysts are used according to where they were found Materials fluctuate in their activity, the use of the catalysts according to the invention is under Extremely desirable in circumstances. Furthermore

It has been shown that the sodium and vanadium can often be removed better when using lower room flow velocities with the catalysts according to the invention.
The process according to the invention is preferably carried out under the following conditions:

Room flow velocity 0.5 ... 2 V / V / hour.

Temperature 400 ... 430 °

Pressure 35 ... 105 at

Repatriated

Amount of hydrogen 180 ... 1800 m ³ / m ³

The method according to the invention is preferably suitable for the pretreatment of crude petroleum or petroleum products that are catalytically hydrogenated to remove organically bound sulfur should be. For example, it has been found that in the hydrofining of crude petroleum and petroleum residues using one of cobalt and molybdenum oxides on an alumina support existing catalyst, considerable amounts of vanadium and sodium were taken up by the catalyst and as a result the catalyst activity continuously decreases during operation and during regeneration in the usual way "cannot be fully restored. According to the invention, FIG a continuous process the vanadium and / or sodium containing petroleum initially with Treated iron oxide on aluminum oxide and then in a hydrogenation zone of organically bound Sulfur free.

The application of the method according to the invention to the treatment of a Given petroleum residue.

example

Removal of sodium and vanadium from a petroleum residue, which by stripping 47% volatiles obtained from a Kuwait oil.

Operating conditions:

Starting oil Kuwait

53 percent by volume residue
Room flow velocity .. 1 V / V / hour.

Temperature 416 ° C

Pressure 70 at

Amount of recirculated hydrogen ... 720 m ³ / m ³

Direction of flow upwards

Operating time 50 hours

Results obtained:

Iron oxide on aluminum oxide
(12.8 percent by weight Fe ₂ O ₃ )

Vanadium, mg / kg ...

Sodium, mg / kg

Sulfur, weight percent

specific weight
I5.56 / I5.56 ^O

Starting oil

41.0
39.0

3.89
0.958

Total treated oil

while

50 hours

obtain

21.0
28.0

3.42
0.943

Claims (1)

Claim: Process for removing sodium and vanadium from crude petroleum or petroleum products by treating crude petroleum or petroleum products with bauxite in the presence of hydrogen at temperatures between 371 and 427 °, preferably 415 °, and temperatures between 57 and 71 kg / cm ² , preferably 71 kg / cm ² , lying pressures that sodium and vanadium are retained by bauxite, according to patent 970 697, characterized in that, instead of bauxite, a contact material consisting of 5 to 15 percent by weight of ferric oxide and aluminum oxide is treated and the treated oil optionally then fed to a hydrogenation zone to remove organically bound sulfur. © «» 657/432 10.56 (809 704/5 1.59)