DE807689C - Process for making acidic ingredient-rich tea oil products - Google Patents

Description

Process for making tar oil products rich in acidic ingredients In the manufacture of tar products there is often a desire to have a to produce tar oil or a tar oil composition rich in acidic constituents, the is relatively inexpensive. One can make products from the tar that are too iooo / o from consist of acidic components, separate them and do this in the production of the so-called. Phenolic oil, however, these products are overly expensive for some uses.

It has now been found. that from a little valuable or almost worthless waste product of the processing of coal tar, namely the so h glnPh, ie the residue that remains in the distillation of crude phenol and which is of little value and z. B. was added to the pitch, in some cases remained completely unusable, in a surprisingly simple manner without incurring significant costs and using the means that are customary in tar processing, a tar oil product with a high content of acidic components can be produced by this so-called phenol pitch with. Tar oil-hydrocarbon mixtures, e.g. B. an anthracene oil, is mixed and then distilled while collecting a tar oil rich in acidic components.

According to a preferred embodiment of the invention, the distillation residue the processing of crude phenol (phenol pitch) and anthracene oil in the usual boiling range mixed in the ratio i: i and distilled in vacuo until the residue has the softening point of a soft pitch or a normal pitch.

According to a further preferred embodiment of the invention the mixture is distilled in vacuo until the residue has reached the softening point of a normal pitch shows. At least 50% by weight of the original Mixtures are obtained in this way as oil distillate, which has an acidic content Oils up to so0 ;; o and more.

The remaining bad luck can be ended for all the purposes \ -er @ \ - to which pitch is commonly used. Does it become common bad luck, i. H. the residue added to the distillation of tar, this pitch becomes in its properties not changed unfavorably, as is the case with the addition of original phenol pitch can be. This residue from the distillation of the mixture of phenolic pitch and tar oil can also be used for other purposes. z. 13. for insulation, in the manufacture of roofing felt, used in tar road construction, as briquette pitch, etc. -% \ - earth.

The application of vacuum in the distillation of the mixture of Phcnolpech and tar oil is preferred since damage to the residue, e.g. Il. a decomposition under carbon deposition, is certainly avoided.

The ratio between phenol pitch and tar oil can be reduced be, and it may be advantageous under certain circumstances, either an excess or to end a deficit of tar oil.

: Intliracen oil or tar oils containing antliracen oil are suitable for this The process of the invention works particularly well, but other tar oils can also be used find, the boiling range preferably being chosen to be somewhat high; z. B. light oils can only be considered in exceptional cases.

The tar oil product produced in this way with a high content of acidic components can be used on its own if a particularly high content is desired. This product can also be used with advantage as an additive in those cases in which an increased content of acidic substances in a tar oil fraction is desired, e.g. As can a KohlenflotationsöLzugesetzt be to create a 01 by which the flotation can be durchgcfÜhrt particularly successfully this product.

Surprisingly, after the addition of one of the above results Way manufactured tar oil an increased freedom of expression, which in most cases is not only desirable, but also increases the value of this product.

This tar oil product made according to the invention with a high GI content of higher boiling acidic constituents can also be used in the bitumen and tar industry where the adhesion of the bitumen to the rock is to be improved so that this oil can be used as a substitute for non-carbon wax can, at the same time the advantage of increased water resistance is achieved.

The distillation can be carried out in the simplest possible way @ \ - erd @ n, and it is not necessary to use a rectifying colotuie.

Claims (6)

PATENT A \ SPß1'CHE: i. Process for the production of tar oil products rich in acidic constituents, characterized in that a G; inis, 7li of the residue (phenol pitch and a tar hydrocarbon mixture from the work-up of roliplienol by distillation) is distilled while collecting a tar oil product rich in acidic constituents. 2. The method according to claim i, characterized in that anthracene oil is used as the Tcerkolilen @ \ - hydrogen will. 3. Process according to Claims i to 2, characterized in that the mixture from approximately equal parts of plienol pitch and tar oils, preferably = 'inlet oil, consists. 4. The method according to claims i to 3, characterized in that the Distillation is carried out in vacuo. 5. The method according to claims i to 4, characterized in that the distillation to a residue of Weiclipech character is carried out. 6. The method according to claims i to 4, characterized in that that the distillation is carried out to a residue of \ orinal pitch character will.