DE2813578A1 - PROCESS FOR THE OBTAINING LOW SULFUR ELECTRODE COOK FROM SULFUR-CONTAINING PETROLEUM RAW MATERIALS AND PROCESSED COAL PRODUCTS - Google Patents

Description

Instytut Technologii Nafty March 29, 1978

Krakow, Poland CW 160

Process for the production of low-sulfur electrode coke from sulfur-containing petroleum raw materials and hard coal processing products

The invention relates to a method of extraction of electrode coke made from raw materials that contain sulfur Petroleum and hard coal processing products originate. The electrode coke obtained is used to produce various types of coke Products for the electrode, metallurgical and electrotechnical industries and in particular for the production of presintered masses and cathode blocks for the aluminum industry Up to now, electrode coke has been used for the industries mentioned Obtained from petroleum processed products with a low sulfur content and from coal tar processed products.

Petroleum coke suitable for products of the electrode industry can also be obtained from products contaminated with sulfur Win oil. In this case, however, the wet desulphurisation of the batch and its subsequent cracking are required.

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and only then can the heavy oil be used as a raw material for the production of petroleum coke. However, these processes are costly, complicated and laborious and given the depletion of supplies of low sulfur petroleum coke and the steadily increasing production of graphitized products is becoming increasingly carbochemical Raw material base used in connection with the petrochemical base.

The known processes for the production of electrode coke from mixtures of coal and petroleum products show that In certain cases these products separate, which makes it impossible to obtain homogeneous coke. To this To prevent segregation and to obtain a homogeneous carbon fuel substance, the mixture is a distillation and then subjected to thermal or chemical processing until the end product, which forms the electrode coke, is obtained. However, the homogenization of the mixture by distillation is energy consuming and causes certain destructive effects Changes that negatively affect the quality of the coke obtained.

The invention is based on the object of specifying a method after that, in a simple and energy-saving way, a homogeneous, for the production of high-quality, low-sulfur electrode coke suitable mixture of products from the processing of high-sulfur petroleum and products from processing

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-A-

can be produced by hard coal.

This task is achieved by a process for the production of low-sulfur electrode coke from sulfur-containing petroleum raw materials and products of hard coal processing solved according to the invention in that petroleum products, such as distillation residues, distillates or extracts with a sulfur content from 2 to 6% together with coal tar or products of coal extraction, the proportion of which in the total mixture is 10 to 75% is fed to the stripping column of a chamber coking plant in which the products are subjected to heat and mass transfer in countercurrent to vapors and gases that skkammer from the coking, in which the product mixture obtained is a Is subjected to coking, flow off, are homogenized, after which the homogeneous mixture is coked in a manner known per se is subjected.

In the following, the method according to the invention is based on a Embodiment explained in more detail.

A vacuum residue obtained from the processing of sulphurized petroleum with a sulfur content of 3 to 4.5% becomes fed together with raw coal tar in a ratio of 1: 1 to 1: 2 to the stripping column in the chamber coking plant, in which these raw materials are brought into countercurrent contact with the vapors and gases flowing out of the coking chambers. As a result of this contact, there is a material and heat

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exchange between the individual currents and the full mixing and homogenization of the raw material originating from hard coal. In the lower part of the column, the mixture consisting of the vacuum residue and the raw coke oven tar, enriched moreover by the heavy residue that is separated from the coke oven chambers as a result of the turnover with the vapors, is removed. The mixture is subjected to thermal processing in coking chambers at a temperature of approx. 300 to 350 ^{° C. using known methods and processes.}

The electrode coke obtained contains 1 to after calcination 1.5% sulfur, has a specific density of approx. 2.0 to 2.1 g / cm and good electrical and mechanical properties.

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Claims (1)

PATENT LAWYERS.
CELLENT ZWEIBRÜCKENSTR, 15
8OOO MUNICH 2 Instytut Technologii Nafty March 29, 1978 Krakow, Poland AS / Hu CW 160 Claim Process for the production of low-sulfur electrode coke
from sulphurous petroleum raw materials and products of
Coal processing, characterized in that petroleum products, such as distillation residues,
Distillates or extracts with a sulfur content of 2 to 6% together with coal tar or coal extracts, which make up 10 to 75% of the total mixture, are fed to the stripping column of a chamber coking plant, in which the products are fed from the coking chambers with heat and material exchange in countercurrent outflowing vapors and gases are homogenized, after which the homogeneous mixture is subjected to coking in a manner known per se. ORIGINAL INSPECTED 909819/0534