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power plant

A technology for power plants and units, applied in engine components, engine functions, machines/engines, etc., to solve problems such as inability to measure oxygen concentration and complex flow conditions at compressor inlets

Inactive Publication Date: 2015-12-02
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the flow conditions upstream of the compressor inlet are complex and characterized by high swirl, turbulence and ongoing mixing
In practice, no direct oxygen concentration measurement is possible

Method used

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Embodiment Construction

[0020] Since the power plant in an embodiment of the invention may have the same structural elements, reference is made below to the power plant already described.

[0021] The power plant includes a monitoring system for the oxygen concentration of the mixture at the compressor 2 inlet.

[0022] The monitoring system comprises a recirculation flow mass flow sensor 30 connected upstream of the mixer 16 and preferably downstream of the splitter 11 .

[0023] Also, the recirculation flow oxygen concentration sensor 31 is arranged upstream of the mixer 16 ; preferably, the sensor 31 is connected downstream of the cooler 14 .

[0024] Furthermore, a sensor 32 for the mass flow of the mixture is provided, connected upstream of the compressor 2 .

[0025] The monitoring system also comprises a control unit 35 connected to the sensors 30, 31 and 32 and arranged to elaborate the pieces of information detected by them to obtain the oxygen concentration upstream of the compressor inlet...

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Abstract

A power plant includes a gas turbine unit adapted to feed flue gases into a diverter where they are divided into a recirculated flow that is fed into a mixer together with fresh air to form a mixture that is fed to a gas turbine unit compressor inlet, and a discharged flow, that is fed into a CO2 capture unit. A monitoring system for the mixture oxygen content at the compressor inlet is provided. The monitoring system includes a recirculated flow mass flow rate sensor, a recirculated flow oxygen concentration sensor, mixture mass flow rate sensors, a control unit arranged to process information detected by the recirculated flow mass flow rate sensor, recirculated flow oxygen concentration sensor and mixture mass flow rate sensor, to determine an oxygen concentration upstream of the compressor inlet.

Description

technical field [0001] The invention relates to a power plant. [0002] In particular, the following relates to systems with exhaust gas recirculation and CO 2 Capture unit's power plant. Background technique [0003] refer to figure 1 , WO 2010 / 072710 discloses a power plant with a gas turbine unit 1 comprising a compressor 2 , a combustor 3 and a turbine 4 . [0004] A mixture 6 comprising fresh air 7 from the environment is fed into the compressor 2 and exhaust gas 8 (originating from the combustion of the mixture 6 and fuel in the combustion chamber 3 ) emerges at the turbine 4 . [0005] These exhaust gases 8 (often having a high temperature) are preferably fed into the reheat boiler 9 of the steam turbine unit 10 ; in the boiler 9 the exhaust gases 8 transfer heat to the water of the steam turbine unit 10 . [0006] From the boiler 9 the exhaust gas 8 is fed into a splitter 11 where it is divided into a recirculation stream 12 and a discharge stream 13 . [0007] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/26F02C3/34
CPCF01K23/101F02C3/34F02C9/20F02C9/40F05D2260/61F05D2260/80F23C9/00F23C2202/30F23N2041/20F23N2241/20Y02E20/32Y02E20/34
Inventor S·罗弗卡F·桑德尔E·本茨
Owner ANSALDO ENERGIA IP UK LTD