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Injector injecting a hollow jet of liquid fuel

A technology of liquid fuel and injector, which is applied in the field of liquid fuel hollow jet injector to achieve the effect of reducing pressure loss

Inactive Publication Date: 2012-09-05
SAINT GOBAIN EMBALLAGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technique is that it increases the temperature at the regenerator stack and, if necessary, requires a special design of the regenerator and the regenerator stack, especially in terms of tightness and corrosion resistance;

Method used

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  • Injector injecting a hollow jet of liquid fuel
  • Injector injecting a hollow jet of liquid fuel
  • Injector injecting a hollow jet of liquid fuel

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] A 144m equipped with a burner that includes the intake airflow 2 (area of ​​glass bath) ring flame furnace in which four injectors of liquid fuel oil heated to 130° are located below the inlet flow. The burner has a power of 15 megawatts. Each injector contains an element for rotating the fuel, consisting of 8 holes with a diameter of 2.3 mm, the axes of which form an angle of 5° with respect to the direction of entry of the liquid fuel. The axes of the holes are arranged on a circle with a radius of 3.75 mm. The total flow rate of fuel (the sum of the flow rates supplied to all injectors) is 2000 kg / h. Air is supplied to the burner under stoichiometric conditions relative to the fuel oil. NOx measured in flue gas is 550mg / Nm 3 .

example 2

[0085] Example 2 (control)

[0086] Arranged as in Example 1, but with the difference that the axes of those holes form an angle of 20° with respect to the direction of entry of the liquid fuel. NOx measured in flue gas is 800mg / Nm 3 .

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PUM

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Abstract

The invention relates to an injector for spraying liquid fuel, comprising a liquid fuel supply duct and an atomization-fluid supply duct, said liquid fuel supply duct comprising an element pierced with oblique passages to bring said fuel into the form of a swirling hollow jet before it is ejected from said ejector, the generatrix of each of said passages making an angle of less than 10 DEG with the direction in which the liquid fuel is supplied. The injector is intended to form part of a burner, particularly to be fitted to glass-making furnaces. The injector allows an appreciable reduction in NOx.

Description

technical field [0001] The invention relates to a combustion method and device in which the supply of fuel is ensured by at least one injector. Background technique [0002] The application of the invention for melting glass in glass melting furnaces will be described in more detail, in particular in furnaces for the manufacture of float-type flat glass or in furnaces for the manufacture of glass containers, e.g. by working by tilting furnaces, like those utilizing regenerators (energy recoverers), but the invention is not thus limited to these applications. [0003] Most of the above-mentioned combustion methods, especially those used in glass melting furnaces, face the problem of undesired NOx emissions in the combustion flue gases. [0004] NOx has harmful effects on both humans and the environment. In fact, on the one hand, NO 2 Is an irritating gas that can cause respiratory illness. On the other hand, after exposure to the atmosphere, NOx can gradually form acid ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D11/00
CPCF23D11/107F23D2900/11101
Inventor P·劳奇J·弗纳茨L·加尼尔
Owner SAINT GOBAIN EMBALLAGE