SU66862A1 - The method of obtaining highly flavored motor fuels - Google Patents

Description

The use of heat from the subsurface area of the coke ovens to produce the target aromatics or strongly flavored motor fuels is of great technical and industrial interest, as;

a) exempts the industry from the construction of expensive, sometimes cumbersome special pyrozavods processing oil products or other organic compounds;

b) combines the process of coking and pyrolysis;

c) it makes it possible to increase the heat engineering efficiency.

The above advantages of utilizing the heat of coke ovens to produce additional quantities of the desired aromatics are known. Quite a few attempts were made to carry out the process described above on an industrial scale, but they all did not give the best results.

One of the main reasons for the unsuccessful solution of the task was the underestimation of the process of preliminary preparation of organic raw materials before entering it into the subsurface space of the coke oven.

As is known, depending on the quality of the raw material being processed, the efficiency of the pyrolysis process depends on the pyrolysis temperature and the product residence time in the pyrolysis zone. Since the coke oven temperature and its dimensions are set and thus the gas velocity in the coke oven underwater space is set, the only way to solve this technical problem is to pretreat the raw material introduced into the coke oven.

The authors propose to carry out the said pretreatment of the raw material (kerosene, gas oil, etc.) by thermal or thermal catalytic means.

An example of the proposed scheme of work is the following:

The product introduced into the subsurface space of a coke oven or into a certain zone of a coke oven is preliminarily subjected to cracking in the vapor phase at a temperature of 560-600 °. Cracked products directly from the cracking furnace in the vapor phase or after condensation

in the liquid phase is served in a coke oven, where they are subjected to the reform number 66862

Mangu (pyrolysis). The heat carried away by the gases of coking and pyrolysis can be used to preheat the product to be cracked in heat exchangers on coke oven stoves.

Subject invention

The method of obtaining highly aromatic motor fuels in coke ovens by pyrolysis of liquid or vaporous hydrocarbons introduced into the furnace during coal coking, characterized in that the hydrocarbons introduced into the coke furnace, for example kerosene, gas oil, etc., are subjected to preliminary heat treatment, for example cracking, in the vapor phase - at a temperature of 560-600.