General Electric Company

Anatoly D Sorokin

Arkady Samuilovich Dyckman

Boris I Gorovits

Yury I Petrov

Leontii M Krasnov

John William Fulmer

Andrey Vladimirovich Zinenkov

Alexander S Malinovskii

Vadim P Boyarsky

Sergey N Chernukhin

William D Kight

Vladimir I Sarge

Yelena N Sarge

Alexandr S Malinovsky

Arkadys S Dyckman

Anatoly M Somov

Leonty M Krasnov

Yurii I Petrov

Sergey N Chernukhim

Boris I Gorovitz

Alexander S Malinovski

John V Fulmer

Svetlana A Taranenko

Sergey A Polyakov

A tar desalting process wherein the tar containing salts is mixed with dilute aqueous orthophosphoric acid in either a batch or continuous process, allowed to settle into two phases, an organic phase and an aqueous phase containing most of the salts which is then removed from the organic phase. The process removes a high percentage of the salts from the tar and reduces fouling and corrosion of downstream equipment.

Phenol tar desalting method

Valuable products are recovered from phenol tar by thermocracking under controlled conditions in the presence of polyphosphoric acid. Bisphenol A tars can be optionally cracked under these conditions mixed with the phenol tar and enhanced yields obtained.

Phenol tar processing method

An improved phenol tar cracking process using a rectification column as a hydrocracker obtains an increased yield of valuable products, phenol, cumene and alpha-methylstyrene, by taking from 50 to 100% of the acetophenone in the reactor overhead with the cracked product stream.

Phenol tar waste reduction process

The invention is related to petrochemistry and is useful in the process of combined production of phenol and acetone by the cumene method. The method is a two stage process which minimizes waste water volume, diminishes equipment corrosion and minimizes consumption of cumene. In the first stage, the phenol tar is treated with a 2-5% water solution of a water soluble amine at a ratio of 1:1.5-1:4.0 to produce two layers, water and organic. At the second stage the water layer from the first stage is thermotreated. As a result, water soluble amino phenate decomposes to amine and phenol. Gaseous amine is removed from the system and then recycled to the first stage. The phenol water solution obtained from the thermotreatment is extracted by standard extraction agents (e.g. diisopropylether, cumene). The water layer from the phenol extraction is about 50-95% of the original water solution employed in the first stage and is then saturated with the amine and recycled to the first stage.

Method of phenol extraction from phenol tar

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Novokuibishevsk, Russia

Anatoly D Sorokin