DE535473C - Process for converting high-boiling to low-boiling hydrocarbons - Google Patents

Description

Process for converting high-boiling to low-boiling hydrocarbons It has been shown that the cleavage of higher-boiling hydrocarbons can perform with excellent yields of low-boiling hydrocarbons, if you rely on naphthenic acid-free high-boiling starting materials, e.g. B. naphthenic acid-free Mineral oils, tars, hydrogenation products of coal, oils or tars and the like, or Destil: -lätions- and conversion products of these starting materials catalysts from Type of complex ansolvo acids (Liebigs Annalen, Volume 455, pp. 227 to 253) or their Components, i.e. compounds or mixtures of organic acids or their derivatives, such as B. Oxyacids, acid amides and others, with inorganic salts, at temperatures lets act above 300 °.

Although it is known, mixtures of organic acids and inorganic To use salts as additives in the splitting of hydrocarbons; get there these mixtures are used in very large quantities and at temperatures of around 2oo °, where Ansolvo acids are not yet effective. The great advantage of the Ansolvo acids compared to the undefined mixtures present in the known processes in their special cleavage ability, which is based on the fact that the complex acids a have increased H-ion concentration compared to the individual components that are present in certain Mixing ratios of the components is still particularly pronounced. This circumstance It is to be thanked that, even in small amounts, they are extremely effective. It it has been found that all ansolvo acids act as cracking catalysts in this way are applicable with advantage.

The present method is usually or conveniently at carried out under elevated pressure, stirring the reaction mass is advantageous.

It is also possible in the presence of hydrogen or a hydrogen donor Gases work.

Example i ioo parts one from zoo. up to 35o ° boiling thin tar fraction are with 5 parts of an α-naphthoic acid-tin tetrachloride double compound 35o to 400 ° and a pressure of io at treated. From the fission products obtained 41.2 parts, based on the starting material, boil below 200 °.

Instead of the double connection can. you can also use the two components in subject to changing molecular conditions. One works at lower Temperatures, about zoo up to 25o °, then only 2 to 3% to 2oo ° are boiling Products. Example a 100 parts of a cleaned generator oil are in the presence of 5 parts of an i - naphtholecarboxylic acid - aluminum chloride double compound (or its components as in the previous example) in a sheet lined with Monel: Autoclave heated to around 38o to 20 °. Boil from the obtained products, based on the starting material, 33.5 parts up to zoo °. 'Example 3 ioo parts of a Gasoline-free genera <tordickeeres are made with 3 parts of an oleic acid-zinc chloride double compound (or its components, see example i) in a stirred autoclave at 35o ° and a5 treated at, whereby 35 parts of up to 2oo 'boiling products are obtained. -Example q.

100 parts of paraffin (melting point 41 to 3 °) are combined with 1 part of a formic acid-aluminum chloride double compound (or their components, see Example i) heated to ¢ 0o to q.q.o ° and 3o at, with Distill over gg parts, of which 7 5 parts up to 2oo 'and further a ¢ parts up to Boiling 360 °, example 5 100 parts of a mineral oil boiling above 200 ' with 5 parts of a'-naphthoic acid - antimony pentachloride double compound (or its components as in example i) under a hydrogen pressure of 50 at to, ¢ 20 ° heated. Boil from the cleavage products obtained. based on the starting material, ¢ 5 parts below zoo °.

Claims (1)

PATENT CLAIM: Process for converting higher boiling to lower boiling ones Hydrocarbons in the presence of organic - acids and inorganic salts, thereby characterized in that one uses naphthenic acid-free starting materials, such as naphthenic acid-free Mineral oils, tars, hydrogenation products of coal and the like, or their distillation or Conversion products Compounds or mixtures of organic acids or their derivatives with inorganic salts of the Ansolvo acid type at temperatures above 300 °, expediently at elevated pressure and optionally in the presence of hydrogen or hydrogen-releasing gases.