Combustor and method for supplying fuel to a combustor

Inactive Publication Date: 2013-05-16
GENERAL ELECTRIC CO
View PDF28 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention has advantages and aspects that can be easily understood by practicing it. It is important to note that the text is describing the technical effects of the invention and not the actual components or details of the invention itself.

Problems solved by technology

However, higher combustion gas temperatures also promote flashback or flame holding conditions in which the combustion flame migrates towards the fuel being supplied by nozzles, possibly causing severe damage to the nozzles in a relatively short amount of time.
Conversely, lower combustion gas temperatures associated with reduced fuel flow and / or part load operation (turndown) generally reduce the chemical reaction rates of the combustion gases, increasing the production of carbon monoxide and unburned hydrocarbons.
However, the convective cooling provided by the fuel before entering the tubes may result in uneven heating of the fuel.
As a result, temperature and density variations in the fuel flowing through the tubes may produce thermal stress in the tubes and / or uneven fuel-working fluid ratios that adversely affect flame stability, combustor performance, and / or undesirable emissions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combustor and method for supplying fuel to a combustor
  • Combustor and method for supplying fuel to a combustor
  • Combustor and method for supplying fuel to a combustor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013]Reference will now be made in detail to present embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms “first”, “second”, and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components. In addition, the terms “upstream” and “downstream” refer to the relative location of components in a fluid pathway. For example, component A is upstream from component B if a fluid flows from component A to component B. Conversely, component B is downstream from component A if component B receives a fluid flow from component A.

[0014]Each example is provided by way of explanation of the invent...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A combustor includes a casing that encloses at least a portion of the combustor. A fuel conduit extends downstream from the casing and includes a tortuous path for fuel flow inside the fuel conduit. A method for supplying fuel to a combustor includes flowing a working fluid through tubes that extend axially through an end cap. The method further includes supplying a fuel through a fuel conduit into the end cap, supplying a diluent through a diluent conduit that extends axially inside the fuel conduit, and swirling the fuel flowing through the fuel conduit around the diluent flowing through the diluent conduit.

Description

FIELD OF THE INVENTION[0001]The present invention generally involves a combustor and a method for supplying fuel to the combustor.BACKGROUND OF THE INVENTION[0002]Combustors are commonly used in industrial and power generation operations to ignite fuel to produce combustion gases having a high temperature and pressure. Various competing considerations influence the design and operation of combustors. For example, higher combustion gas temperatures generally improve the thermodynamic efficiency of the combustor. However, higher combustion gas temperatures also promote flashback or flame holding conditions in which the combustion flame migrates towards the fuel being supplied by nozzles, possibly causing severe damage to the nozzles in a relatively short amount of time. In addition, higher combustion gas temperatures generally increase the disassociation rate of diatomic nitrogen, increasing the production of nitrogen oxides (NOX). Conversely, lower combustion gas temperatures associa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F23N1/02F23Q25/00F23D14/62
CPCF23R3/286F23R3/283
InventorSTOIA, LUCAS JOHNMELTON, PATRICK BENEDICT
OwnerGENERAL ELECTRIC CO