Method for partially oxidizing hydrocarbon and burner

Abstract

A process for the partial oxidation of hydrocarbons wherein a hydrocarbon-comprising gas flow (19) and a free oxygen-comprising gas flow (18) are fed into a reaction chamber (13), is distinguished by that it comprises the steps of: - mixing and reacting a first portion of the free oxygen-comprising gas flow with a first flow comprising reacted gases circulating within the reaction chamber; - mixing a second portion of the free oxygen-comprising gas flow with the hydrocarbon-comprising gas flow in the reaction chamber obtaining a gas flow comprising both hydrocarbons and free oxygen at least partly mixed together; - mixing and reacting the gas flow comprising both hydrocarbons and free oxygen at least partly mixed together with a second flow comprising reacted gases circulating inside the reaction chamber obtaining a gas flow comprising hydrogen and carbon monoxide.

Description

field of invention [0001] The present invention relates to a process for the partial oxidation of hydrocarbons to produce a gaseous mixture comprising hydrogen and carbon monoxide, such as synthesis gas, fuel or reducing gas. [0002] In particular, the present invention relates to a method for the partial oxidation of hydrocarbons comprising the following steps: [0003] - allowing a hydrocarbon-containing gas stream to enter the reaction chamber; [0004] - Allowing a gas flow containing free oxygen to enter the reaction chamber. [0005] In this specification and the appended claims, the term "hydrocarbon" is used to denote light and / or heavy saturated and / or unsaturated hydrocarbons or mixtures of hydrocarbons (such as C 1 -C 6 ); "hydrocarbon-containing gas stream" is used to mean: a fluid containing gaseous hydrocarbons such as methane and natural gas; a gas stream containing suspended solid combustion materials (such as coal ash or carbon ash); of light and / or heavy...

AI Technical Summary

Problems solved by technology

[0013] The main disadvantages of forming carbon soot are: the need for a series of high-energy operations to separate the carbon soot from the reaction products and feed them back into the reaction chamber; the need for more complex equipment to implement the method; and high capital and operating costs

[0015] In addition, prior art methods effective for producing low concentrations of carbon ash involve the operation of the reaction chamber at very high temperatures (around 1400° C.), thus resulting in high oxygen consumption and low conversion, for example, as described in the patent literature It is stated on page 2, line 613 of EP-A-0276538

[0016] In addition, the apparatus for carrying out the method described above has the disadvantage of being inflexible in its operation and unable to accommodate large load changes which can be tolerated when feeding the reactants into the reaction chamber, with the result that load changes may cause or promote the formation of soot

[0017] Due to these limitations, the prior art processes for the partial oxidation of hydrocarbons involve substantial investments in practical implementation and thus significantly add to the production costs of basic feedstocks such as hydrogen and carbon monoxide, which are faced with growing demands

In addition, the prior art methods described above do not satisfactorily meet the pressing need to burn hydrocarbon wastes as residues from the distillation process of the petroleum industry.

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