Burner and method for partially oxidizing liquid, carbon-containing fuel

Abstract

A burner for the partial oxidation of liquid, carbonaceous fuel with steam and an oxygen-containing gas a well as the process in which this burner is used, wherein the parts of the outlet orifice of the burner directed towards the combustion chamber are wholly or partly provided with a coating or with a diffusion layer for protection against thermal load and / or corrosion.

Description

FIELD OF THE INVENTION[0001]This invention relates to a burner for the partial oxidation of liquid, carbonaceous fuel with steam and an oxygen-containing gas, and to the process for producing synthesis gas by partial oxidation of said fuels, in which the burner according to the invention is used.PRIOR ART[0002]A known process for the partial oxidation of liquid, carbonaceous feedstocks for the production of synthesis gas for example is the Lurgi process as described in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Volume 15, Chapt. 3.2.2.[0003]In such processes, the hydrocarbonaceous feedstock stream, e.g. heavy oil, together with the oxygen-containing oxidizing agent, e.g. air enriched with oxygen, and possibly a moderator (mostly steam or carbon dioxide) is converted into a synthesis gas chiefly consisting of carbon monoxide and hydrogen in a reactor space (combustion chamber) at temperatures of 1200 to 1500° C. and high pressures, between 30 and 75 bar.[0004]The re...

AI Technical Summary

Benefits of technology

The patent is about finding a way to make burners last longer without changing their design. They're doing this by adding a coating or layer on the parts of the burner that are exposed to the hottest temperatures during use. This coating helps protect against damage and corrosion, which can cause the burner to malfunction or need replacement prematurely. By combining this coating with a diffusion layer, the burner's lifespan is further extended, and it can be used for longer periods of time without needing repairs. This results in significant cost savings and improved reliability.

Problems solved by technology

The high temperatures and corrosive gases obtained in these processes for producing synthesis gas limit the durability of the burners.

What is disadvantageous in the previously proposed solutions for extending the service life of the burner is the fact that they intervene in the construction of the burner throat, so that in the construction a compromise must be found between the actual function of the burner and the measures for protecting the same against corrosion.

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