DE1020429B - Process for producing a gasoline with a high octane number and sufficient volatility - Google Patents

Description

The invention relates to the production of high octane and good motor gasolines Volatility.

Catalytic cracking and hydroforming are processes for producing gasolines with high Octane number. In the catalytic cracking process, the starting petroleum has a boiling point above the boiling range of gasoline cracked in the presence of catalysts, resulting in hydrocarbons, whose boiling point is in the boiling range of gasoline. During hydroforming, petroleum fuels are formed with low octane number .. at elevated temperatures and pressures in the presence of Hydrogen treated with catalysts, the naphthens convert into aromatic compounds, resulting in products with a significantly higher octane number. A Widely used hydroforming process uses catalysts containing platinum and is known as Called platforming.

To gasoline with an octane number greater than 100 (research method without additive) and sufficient Establishing volatility, it has been suggested that To subject the platform to a thermal reforming to increase the octane number and the treated in this way Mix platformat with a catalytically cracked mineral spirits to produce a product with enough high volatility.

A heavy gasoline with a boiling range of, for example, 90 to 190 ° (ASTM) is usually used as the starting material for the platforming, with an _{abundance of a fraction with a boiling range of C 5} to 90 ° (ASTM) and a low octane number of about 65 (research number) . This low-octane gasoline can only be mixed in small quantities with motor gasoline, and its octane number is not increased sufficiently, even with intensive thermal cracking, to make the gasoline suitable as a compound component for high-octane gasoline.

The aim of the invention is a process for the production of motor gasoline with a high octane number and sufficient volatility without the use of catalytically cracked gasolines as a blend ingredient. This straight-run light gasoline, which is used in the production of starting material for the Platforming incurred, used in the manufacture of high octane gasoline.

According to the invention, a gasoline with high octane number and sufficient volatility is produced, by thermal reforming a mixture of a platform and a distillate light gasoline is subjected.

The distillate light gasoline is advantageously a crude oil fraction with a boiling range under-process for the production

of a high octane gasoline

and sufficient volatility

Applicant:

The British Petroleum Company Limited, London

Representative;
Dr.-Ing. A. ν. Kreisler, Dr.-Ing. K. Schönwald,

Dipl.-Chem. Dr. phil. H. Siebeneicher

and Dr.-Ing. Th. Meyer, patent attorneys,

Cologne 1, Deichmannhaus

Claimed priority:
Great Britain 19 December 1955

Warren Nevin Norton Knight,

Sunbury-on-Thames, Middlesex (Great Britain),

has been named as the inventor

half of the boiling range of the starting material for platforming.

The starting material for platforming should boil in the range from 80 to 200 ° and form a platform with an octane number of at least 90 (research number) are processed according to the invention Motor gasoline with an octane number of at least 100 (research number without additive) and a volatility of at least 45 volume percent, recovered at 100 °. The invention is of course not limited to the production of such gasolines.

The quantity ratio of platform to light gasoline in the mixture, that of the thermal, refocusing is subjected to depends on the volatility and octane number of the two ingredients and on the volatility and octane number required in the end product. Thermal reforming will

709 808/241

preferably carried out under the following conditions:

temperature

pressure

Conversion rate

= 538 to 650 °,

= 15 to 85 kg / cm ² ,

= 5 to 25 percent by weight to C ₃ and lower hydrocarbons.

10

example

A straight-run Kuwait gasoline with a boiling range from 90 to 190 ° (ASTM) is subjected to platforming. The yield of gasoline with an octane number of 95 (research method) and a volatility of 44 percent by volume, evaporated at 100 °, is 75%. This gasoline is mixed with a Kuwait straight-run light gasoline (C ₅ to 90 °, ASTM boiling range) with an octane number (research method) of 65.5 in a ratio of 70 parts by volume of platform to 30 parts by volume of gasoline. This mixture is subjected to thermal reforming at a pressure of 53.8 kg / cm ² and a temperature of 570 ° with a conversion of 18% by weight to C ₃ and lower hydrocarbons. The gasoline obtained in a yield of 70 percent by weight of the reforming starting material has an octane number (research method without addition) of 100 and a volatility of 47 percent by volume, evaporates at 100 °.

Claims (4)

Patent claims: 1. Process for the production of a gasoline with a high octane number and sufficient volatility, characterized in that a mixture of a platform and a distillate light gasoline is subjected to thermal reforming. 2. The method according to claim 1, characterized in that that as distillate light gasoline a crude oil fraction with a boiling range below of the boiling range of the starting material is used for the platforming. 3. The method according to claims 1 and 2, characterized in that for the platforming a starting material is used which boils in the range of 80 to 200 ° and to a platformat With an octane number of at least 90, preferably 95 to 100 (research number without Addition), is processed. 4. Process according to claims 1 and 3, characterized in that the thermal reforming is carried out at temperatures of 538 to 650 ° and pressures of 15 to 85 kg / cm ² with a conversion of 5 to 25 percent by weight to C ₃ and lower hydrocarbons . © 709 808/241 11:57