DE1022340B - Process for the production of motor gasoline - Google Patents

Description

The invention relates to the production of motor gasolines with high octane number and sufficient Volatility.

High octane gasolines are made by catalytic cracking and hydroforming manufactured. In the catalytic cracking process, the starting petroleum, which is above the boiling range of Gasoline ignites, cracked in the presence of catalysts to obtain hydrocarbons, their boiling point is in the boiling range of gasoline. In hydroforming, petroleum gas fractions are lower Octane number treated with catalysts at elevated pressures and temperatures in the presence of hydrogen, convert the naphthenes into aromatic compounds, resulting in products with a significantly higher octane number. One popular hydroforming process uses platinum-containing catalysts and does referred to as platforming.

Subject of patent application B 42562 IVc / 46a is a process for the production of motor gasoline with a high octane number and sufficient volatility Mixtures that are 40 to 60 percent by volume of a high octane, low volatility component consist, which is formed from the higher-boiling fraction of a product from the platforming and about 40 to 60 percent by weight of this product makes up, and 60 to 40 percent by volume from one component with high octane number and high volatility consist of the lower boiling fraction of a catalytically cracked Gasoline is formed with a final boiling point between 80 and 120 °. It will be a light platform with a relatively low octane number and high volatility and a heavy, catalytically cracked one Obtain gasoline with a relatively high octane number and low volatility. Unless otherwise treated, these substances can only be used as low-quality petrol.

According to the invention, these substances are subjected to thermal reforming together and thereby a Motor gasoline with an octane number of at least 100 (research method) with an addition of 1.5 ecm tetraethyl lead / 3.785 1 received.

The conditions under which thermal reforming is carried out depend on the properties of the mixture and the properties desired in the end product. In general, the following conditions are suitable:

Temperature 538 to 650 °

Pressure 15 to 85 kg / cm ²

Conversion up to 25 percent by weight C ₃ -

and lower hydrocarbons.

Method of manufacture
of motor gasoline

Applicant:

The British Petroleum Company Limited, London

Representative:
Dr.-Ing. A. von 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 11 January 1956

Warren Nevin Norton Knight,

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

has been named as the inventor

example

In the example of patent application B 42562 IVc / 46 a, a gasoline with a high octane number, which is 55 percent by volume from a catalytically cracked light gasoline containing hydrocarbons with 5 carbon atoms up to Contains hydrocarbons with a boiling range of 100 °, and 45 percent by volume from a platform residue of 45 percent by weight is mentioned. When mixing the light platform with the heavy, catalytic Cracked gasoline becomes a gasoline with an octane rating of 82 (research number) and a volatility of 50.5% obtained which evaporates at 100 °. The analysis values are contained in the following table:

709 848/290

Claims (2)

Leichtes Platforraat Catalytically cracked heavy gasoline Mixture of 63 volume percent Platformat and 37 volume percent catalytically cracked heavy gasoline Specific gravity, 15 ° ASTM distillation initial boiling point, 0C 2 volume percent recovered, ° C 5 volume percent recovered, ° ΟΙΟ Volume percent recovered, ° C 20 volume percent recovered 30 volume percent recovered, ° C 40 volume percent recovered, ° C 50 volume percent recovered, ° C 60 volume percent recovered, ° C 70 volume percent recovered, ° C 80 volume percent recovered, ° C 90 volume percent recovered, ° C final boiling point, ° C total distillate, volume percent residue , Volume percent loss, volume percent recovered product at 700C at 100 ° C at 140 ° C aromatic substances,% octane number (research number) octane number (engine number) 0.7150 0.8175 0.7520 31.5100.53540113.54343.5117.548.548, 512356,556,5133726614382,574,5150,59080158100,588,5165,511793175,5136101,5187,5155113201,518112922320498999 80,80,80,51,20,21,535__197849-27.5-25,525,025,075,092,782,072,480,074.2 This mixture undergoes thermal reforming at a pressure of 53.5 kg / cm2 and a temperature of 569 ° with a conversion of 19% by weight to C3 and lighter hydrocarbons. The gasoline obtained in a yield of 67 percent by weight has an octane number (research number without addition) of 97.5 (octane number research method 100 with 1.5 ecm tetraethyl lead / 3.785 1) and a volatility of 42%, evaporated at 100 °. P A T E N T A X S P R C CII E: 1. Process for the production of motor gasoline with an octane number of at least 100 at 1.5 ecm 45 tetraethyl lead / 3.7851, characterized in that a mixture of a low-boiling platform fraction containing 40 to 60 percent by weight of the platform with a catalytically cracked heavy gasoline with an initial boiling point between 80 and 120 ° is subjected to thermal reforming. 2. The method according to claim 1, characterized in that one works at temperatures between 538 and 650 ° and pressures of 15 to 85 kg / cm ² . © 709 848/290 12.