Unlock instant, AI-driven research and patent intelligence for your innovation.

Axial stage combustion system with exhaust gas recirculation

A combustion system, axial-stage technology, used in flue gas combustion, staged combustion, turbine/propulsion fuel delivery systems, etc., can solve problems such as diluents being difficult to obtain and use, increasing power plant costs, etc.

Inactive Publication Date: 2017-02-22
SIEMENS ENERGY INC
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these diluents have been effective in reducing emissions, they generally increase plant cost and some diluents may not be readily available for use at all power plants

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
  • Axial stage combustion system with exhaust gas recirculation
  • Axial stage combustion system with exhaust gas recirculation
  • Axial stage combustion system with exhaust gas recirculation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration and not by way of limitation specific preferred embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and changes may be made without departing from the spirit and scope of the invention.

[0030] The present invention is directed to the use of exhaust gas in a gas turbine engine that uses stoichiometrically combusted recirculated exhaust gas to reduce the formation of NOx emissions. To operate gas turbine engines at higher turbine inlet temperatures (TIT) without significant increases in NOx or sound, axially staged combustors can be implemented. According to one aspect of the present invention, it has been noted that injecting pure fuel into the axial stages of a combustor can lead to very high local flame temperatures, whic...

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 method of operating an axial stage combustion system in a gas turbine engine (12) including an EGR system (14) that extracts a portion of exhaust gas produced by the gas turbine engine (12) to a second axial stage of a combustor (18). The extracted exhaust gas is provided at an elevated temperature to a group of injector nozzles (50) at the second axial stage (34) of the combustor (18). A secondary fuel supply line (34) extends to an inlet on each of the injector nozzles (50), and the fuel is mixed with the exhaust gas within the injector nozzles (50) and the mixture of fuel and exhaust gas is injected into the second axial stage (34) of the combustor (18).

Description

[0001] Statement Regarding Federally Funded Development [0002] The development of this invention was supported in part by Contract No. DE-FC26-05NT42644 awarded by the US Department of Energy. Accordingly, the US Government may have certain rights in this invention. technical field [0003] The present invention relates to gas turbine engines, and more particularly, to a gas turbine engine with exhaust gas recirculation to control emissions in an axial stage combustion system. Background technique [0004] Gas turbines, such as those found in simple or combined cycle power plants, burn a mixture of fuel and compressed air to produce hot working gases. The working gas expands through the stages of the turbine to generate power that can be used to drive a load, ie a generator, and / or drive a compressor. Exhaust gases from the turbine can include various combustion by-products such as carbon monoxide (CO), nitrogen oxides (NOx) and their derivatives, and carbon dioxide (CO ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/34F23C9/08F02C3/34F23R3/28
CPCF02C3/34F23C9/08F23C2201/30F23C2202/20F23R3/286F23R3/346Y02E20/16F01K23/10F02C3/14F02C7/22F05D2220/60F05D2220/76F05D2240/35
Inventor S.M.马丁W.R.拉斯特J.E.波尔蒂洛比尔保
Owner SIEMENS ENERGY INC