DE302585C - - Google Patents

Description

GERMAN EMPIRE

ISSUED FEBRUARY 26, 1921

REICH PATENT OFFICE

PATENT LETTERING

- M 302 585 CLASS 23 b GROUP

Patented in the German Empire on January 29, 1916.

ί So far has been the conversion of mineral oil hydrocarbons in low-boiling hydrocarbons of gasoline character in such a way. led that one first-mentioned hydrocarbons a decomposition, z. B. by heating under pressure, subjected and after removal of the gasoline hydrocarbons obtained Repeated cleavage with all of the residue remaining. It turned out here

ίο that in the second and subsequent split Significantly fewer proportions of petrol hydrocarbons arise that the petrol of the later splits in their properties, will deteriorate and the residue of the divisions will eventually coke. The residue In the best case scenario, it was a tar that could only be used as heating material. The use of the apparatus was with / in consideration of the continuously decreasing

ao yield of gasoline great. At the same time,.

especially during the last repetitions of the fission process, a strong evolution of gas one which meant a great loss.

The present method is based on the new observation that only certain proportions the mineral oils are particularly suitable for splitting into light hydrocarbons, while the heavy hydrocarbons formed during the cleavage for the production of gasoline hydrocarbons are less suitable. The present process consists in splitting the total amount of mineral oil hydrocarbons in light hydrocarbons.

substances only executes until the majority of the hydrocarbons to be split is decomposed and then 'from the remaining residue that fraction which is to be split In the light hydrocarbons is particularly suitable, distilled off, this fraction alone subject to the further cleavage independently of the residue, during the Residue is no longer subjected to cleavage, but as a lubricating oil and the like possible refining is used.

For example, common gas oil (intermediate oil, middle oil, blue oil, solar oil slops and the like); from the specific gravity 0.840 to 0.870 the decomposition in 'known manner, for. More colorful Pressure split using a cracker process and the like. The obtained gasoline-like Shares, about 8 to. 12 percent are distilled off. From the remaining residue distilled in the same or in a different apparatus from a fraction which the is close to the original gas oil, i.e. approximately the same specific weight and boiling behavior owns. This fraction is then subjected to further splitting while the remaining residue, which is a viscous, high-boiling oil with a high flame 'Point ■ is used as a lubricating oil or the like.

The process can also be carried out in such a way that all of the hydrocarbons is not split all at once, but several times, and only then is the distance

of the parliamentary group used for the further divisions. The latter faction can be split for itself. They can also be added to the uncleaved starting material and jointly undertake the split with them. One can break down the split with the Totality "of the hydrocarbons also lead so far that in the fractionation after '' Removal of the gasoline does not result in a proportion of ίο the properties of the starting material, but a higher-boiling fraction which, but still supplies considerable proportions of gasoline in the split.

, ₅ Example:

A Galician one serves as the starting material Gas oil produced from crude oil having the following properties: '

Specific weight at 15 ° 0.867, '

Pensky Flpkt. 71 ⁰ C,. '
Engler viscosity at 20 '

Content of up to 200 '
ο percent.

1000 g of this gas oil result in a known process, heated under pressure in an autoclave, a reaction product with the following properties:

1.79.
transferring shares

30 '

Specific weight at 15 ° 0.830,
Pensky Flpkt. 28 ⁰ C,
Engler viscosity at 20 ^c

1.27,

Content of parts passing over up to 200 ° 18 percent.

The entire reaction product is then subjected to redistillation in such a way that first the gasoline-like components are driven off. After that, if necessary, applying Another fraction is captured by water vapor and vacuum, the properties of which are as close as possible to the starting material comes close and has about the following tests:

45

Specific weight at 15 ° 0.869,
Pensky Flpkt. 73 ° C,
Engler viscosity at 20 '

■ ϊ.77.

Content of parts boiling up to 200 ° ο percent,

This fraction, which makes up about 40 percent of the starting material, either on its own or in a mixture with fresh starting material, undergoes the cleavage process again
subject.

'"" The remainder of about 34 percent is hiring
dark, vis-à-vis the starting material 55
kosene lubricating oil with approximately the following properties:

Specific weight at 15 ° 0.940,

Pensky Flpkt. i6o ° C,.

Engler viscosity at 20 ° 9.8 "

Content of parts boiling up to 200 ° ο percent.

With appropriate treatment after 65
known process' is from this dark
Lubricating oil can also produce light-colored.

The loss in the cleavage process is
a total of only about 8 percent.

The advantage of the present method is 70
says that you get bigger yields
Gasoline wins, and the gasoline obtained
have a more uniform composition and texture without the unpleasant odor of the kraking products. The 75th
Residue is to be used for lubrication purposes and the like
use and accordingly more valuable than
the tar-like residues obtained so far
or coke. The gas formation is much lower than with the known processes. The 80
Apparatus is spared significantly as it avoids tar and coke formation.

Claims (1)

Patent claim: Process for converting mineral oil hydrocarbons into lower boiling ones
and higher-boiling products, characterized in that from the cracking of the hydrocarbons according to one of the 90 known oil splitting processes arise - the reaction product after removal
of the gasoline one of the starting material in
Fraction close to boiling point and specific gravity distilled off 95
and then, for yourself or with the original ■ original raw material mixed,
is again subjected to division,
while the higher boiling still bottoms than lubricating oil; possibly after 100
appropriate refining, can be used. Expiration BERLIN, PRINTED IN THE REICHSDRUCKEREI, licher fabrics enthc Huh terw now They are and aspr D veri