DE764394C - - Google Patents

Description

I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT

O.Z. 11 008.

I 62 358 IYd / 23 ί. LUDWIGSHAFEN A. RH.

August 30, 193 deh iu. December ± 940

Rh / Scht.

Process for the production of knock-proof petrol.

When hydrocarbons, which have been produced by reacting carbon monoxide with hydrogen, are often undesirably large amounts of gaseous hydrocarbons and liquid products that contain components boiling below 100 °, for example 50 fo and more, that they meet the requirements of petrol are not sufficient.

It has now been found that hydrocarbons obtained from carbon oxide by reaction with hydrogen can be split without the disadvantages mentioned if they are subjected to thermal treatment together with paraffin-based petroleum or its fractions. For this purpose, the starting mixtures, especially those of medium boiling range containing about 10 to 50 fo petroleum constituents in the presence of catalysts, for example, natural or synthetic aluminum silicates or clay, advantageously in admixture with metals, such as chromium, molybdenum, tungsten or manganese, or their oxides, or in the presence of these oxides alone (individually or mixed), or of magnesia, zinc oxide or active carbon, heated to (temperatures from 4-00 to 650 °. The contact time between catalyst and starting material should be short, e.g. 0 , 2 to 5 seconds The catalyst is activated in relatively short time intervals, e.g.

after a period of use of 0.5 Ms 2 hours, with an acid-off Gases, expediently with gradually increasing oxygen content, advantageously with increasing temperature, regenerated and then, if necessary in a mixture with fresh catalyst, reused. The regeneration is expediently only carried out to the extent that the Cleavage effect of the catalyst remains somewhat below the original, since with such a catalyst the formation is very undesirable low-boiling or gaseous products can be avoided particularly effectively.

The thermal treatment can be carried out at ordinary or elevated pressure, for example 50 to 70 atmospheres or more, optionally in the presence gases, e.g. hydrogen. In the latter case, the contact time between starting materials and catalysts can be reduced be extended.

It has already been proposed to mix hydrocarbons obtained from carbon oxide by reaction with hydrogen split with tars or similar low-hydrogen oils to make them knock-proof Obtain petrol. It was surprising that this purpose can also be achieved by processing high-hydrogen oils and at the same time can suppress the formation of gaseous or very low-boiling products.

Example.

A mixture of 60 parts by volume of a hydrocarbon fraction boiling from 210 to 360 °, which is produced by the reduction of carbon oxide and 40 parts by weight of a paraffinic petroleum middle oil of approximately the same boiling range is passed at 450 ° over a catalyst consisting of silica and alumina. The throughput is 1 liter of oil per liter of catalyst and hour.

(Ub;

Based on the starting mixture, about 96 Vol.jS are obtained

Liquid products, 2.5% by weight easily liquefied) are hydrocarbons and 1.5% by weight of condensable gases. The liquid product contains

based on / starting mixture) gasoline that boils up to 200 and 40 f £ Contains components that boil below 100 °. Its octane number is 70.

If the "two components of the mixture are used by themselves in such a way that from 4-0 parts by volume of petroleum oil and from parts by volume of oil obtained by reducing carbon oxide, practically the same amount of gasoline boiling up to 200 ° is obtained as in the case of joint processing and If this gasoline also has the content of components boiling below 100 ° (around 35 to 40 fo) required today, the following results are achieved:

From 40 parts by volume of mineral oil middle oil arise when splitting at 460 ° under the same conditions about 96 Vol.?£ liquid products, 5 wt. Fo easily liquefiable hydrocarbons and 1 wt. $ Unkondensierbares gas. Contains the liquid product, based on raw materials, 43 Vo2u $ boiling to 200 ° gasoline $ 25> contains less than 100 ° boiling constituents. Its octane rating is 72.

From 60 parts by volume one boiling between 210 and 360 °

Fraction of a hydrocarbon obtained by reducing carbon dioxide off oil is formed at 420 ° under otherwise identical conditions 96 vol. $ Liquid products, 4.5 wt. $ Easily liquefiable hydrocarbons and 1.6 wt. $ non-condensable gases. The liquid product contains, based on the starting material, 22 Vol. $ Up to 200 ° boiling Gasoline that contains 60 vol.jS substances that boil below 100 °. Its octane number is 63.

United; the so obtained gasoline from 40 vol. Parts of petroleum middle oil and 60 parts by volume of oil obtained by reducing carbon dioxide, one obtains (40. 0.96. 0.43) = 5-16.5 + (60. 0.96 0.22 1 = 5 12.7 = 29.2 parts by volume of gasoline boiling up to 200 °. The earth

Oil-based oil obtained up to 200 ° boiling gasoline contains (16.5 · 0.25) =} 4.1 parts by volume, the kogasin-derived gasoline (12.7. 0.6J = £ 7.6 Parts by volume components boiling below 100 °. Together, when processed separately, you get (4.1 + 7.6 / = ^ 11.7 parts by volume = 40.0 parts by volume? I Substances boiling below 100 ° in relation to gasoline up to 200 °. The octane number of the gasoline mixture obtained by separate processing is but only 66.5

Claims (1)

Patent entitlements Process for the production of knock-proof petrol catalytic cracking of hydrocarbon oils by reaction made of carbon oxide with Yfassstoff, characterized in that, that the starting materials are mixed with paraffin-based Crude oil or fractions of it splits. I. G. MR3EMKDUSTRIE AKTIEFGS SELL SC HAPT To distinguish the subject of the application from the state of the art are in the granting procedure following publications *) ■ a *) been considered. . A / Tt ♦) What does not apply is to be deleted