steam generator innovations - siemens main configurations. horizontal gas path ... • sec. steam...

Steam GeneratorInnovations

Peter Rop

NEM: a global presence

6 35,000

6

55025

Product overview

Advanced HRSG design options:

Cycling & Fast start: Full GT power in 12 min

High steam temperatures: 600°C

High steam pressure: > 180 bar(a)

Design options

TURBINE EXHAUSTFLOW

SU

PE

RH

EA

TE

R

EV

AP

OR

AT

OR

FEEDWATERSUPERHEATED STEAM

EXHAUSTTO STACK

STEAMDRUM

EC

ON

OM

IZE

RSU

BC

OO

LE

DW

AT

ER

2P

HA

SE

MIX

TU

RE

SU

PE

RH

EA

TE

DS

TE

AM

TURBINE EXHAUSTFLOW

SUPERHEATER

EVAPORATOR

ECONOMIZER

SUPERHEATED STEAM

EXHAUST TOSTACK

FEEDWATER

STEAMDRUM

SUBCOOLED WATER

2 PHASE MIXTURE

SUPERHEATED STEAM

HorizontalHRSG

VerticalVerticalHRSGHRSG

Main configurations

Horizontal gas pathOptimized HP drum“normal” SH + headersOnly subcritical

DrumPlus: HNC fast-start

• Minimize drum wall thickness

• Hold-up: > 1 min

• Sec. steam dryers outside drum> NEM patent

Drum Plus design

Total solution: flexibility

multipledowncomers

SH1connections

Separatorbottles

Horizontal gas path2-stage evaporator“normal” SH with headersStability

Horizontal OTSG

Horizontal gas pathDouble evaporator+ 2-phase redistribution

“normal” SH + headers

Horizontal OTSG

Vertical gas pathMulti-pass evaporatorSerpentine bundlesPlot space

Vertical OTSG

Serpentine bundles

Vertical OTSG

VOTSG: 3p + RH

Modular VOTSG

“Clean” designDry-running capabilityWarm casing:

fuel indifferentModular design:

fast erection

Header-type Heat Exchanger

Large power

Fast start

Multiple media options: geothermal, moltensalt, ORC etc.

Design options

Steam generator

FW in

Steam out

HTF in

HTF out

Reheater

HTF out

HTF in

Steam out

Steam in

Top view

Heat Exchanger

Once-Through heat exchanger design

264 MWth Steam Generator (Blythe)

Heat Exchanger

Nuclear fusion power plant:

1120 MWth 2x50% OTSG + RH

Heat Exchanger

Geothermal & Organic Rankine Cycle applications

Heat Exchanger

THANK YOU!