Progressing of high efficient and clean coal · PDF fileProgressing of high efficient and...

Progressing of high efficient

and clean coal technologies October 1, 2015

Hidetoshi Aiki

Director

Boiler Business Strategy Planning Dept.

Boiler Products Headquarters

Mitsubishi Hitachi Power Systems, LTD

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Contents

1

1. Introduction of Mitsubishi Hitachi Power Systems

2. Supercritical / Ultra-Supercritical Power Plant

3. Advanced Clean Coal Technology

© 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved.

1. Introduction of Mitsubishi Hitachi Power Systems

2 © 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved.

Mitsubishi Hitachi Power Systems, Ltd (MHPS)

Name MITSUBISHI HITACHI

POWER SYSTEMS, LTD.

Head Office Yokohama, Kanagawa,

JAPAN

Representatives Koji Tanaka (Chairman of the Board)

Takato Nishizawa (President and CEO)

Capital 100 Billion JPY

Effective Date February 1, 2014

Employees 23,000

(incl. 7,600 outside Japan)

3

Integration in the Thermal Power

Generation Systems Field


Global Network of MHPS

4

MHPS has 54 companies in 24 countries.

CBC

MHPS Europe (UK)

L&T MHPS JV

MHPS America Energy and Environment

MHPS Dongfang

JV MHPS Canada

MHPS Africa (RSA)

DHME (Dalian)

MHPS Americas

MHPS Europe (Germany)

MHPS Philippines

MHPS Technical Services

MHI Kiev Office

(Ukraine)


Yokohama Head Office

MHPS’s Business Field

5

Gas Turbine Combined Cycle (GTCC) Power Plants

Integrated coal Gasification Combined Cycle (IGCC) Power Plants

Boiler & Turbine Generation Plants

Geothermal Power Plants

Environmental Plants SCR Systems, FGD Systems

Steam Turbines

Gas Turbines

Boilers

Generators

Power Generating Plant Peripheral Equipment

SCR Systems Plant Control System

Fans Fuel Cells (SOFC)

Products & Services


MHPS Activities in Ukraine

6

Ukraine

OJAC Alchevsk and Steel Works

Alchevsk Iron and Steel Works GTCC 450MW

No.1 GT M701S(DA) x 1 (100MW), ST x 1 (50MW)



Regenza

Dneprodzerzhinsk GTCC 150MW

- M701S(DA) x 1 (100MW)

- ST x 1 (50MW)

Zmiivska (Centroenergo)

1 x 300MW Boiler rehabilitation


2. Supercritical/Ultra-Supercritical

Power Plant


石炭焚火力発電プラントの比較（米国 vs.日本）

8

Comparison of Coal Fired Plant Thermal Efficiency by

Individual Countries

Source:； International comparison of fossil power efficiency and CO2 intensity - Update 2013, Ecofys

Avera

ge G

ross T

herm

al E

ffic

iency (

LH

V, %

)


620ﾟC

200

300

500

400

600

20

30

Steam Temperature

Ste

am

Tem

p.

(oC

)

Gro

ss P

lant E

ffic

iency (

LH

V%

)

538ﾟC

600ﾟC

593ﾟC

10

610ﾟC

40

700

Co

al fi

red

SC

(Su

pe

rcri

tica

l)

US

C(U

ltra

-Su

pe

rcri

tic

al)

566ﾟC

A-USC

1981 1995

1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 1910

Gross Plant Efficiency

Year

History of steam condition and thermal efficiency in Japanese thermal power plant

Efficiency vs Steam Condition for Coal Fired Plant

© 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved. 9

Higher steam temperature and pressure improve thermal plant efficiency

In other words, SC/USC technology provides economical power production, fuel energy

saving, lower carbon emission and environment-friendly

Note: History of plant efficiency and steam temp.

includes oil and/or gas fired power plant

10

MHPS Various Coal Experience

Anthracite

Bituminous

Sub-Bituminous

Lignite

MHPS can provide

various power plants

best suited for various

kinds of coal based on

abundant experiences.

Ukrainian Anthracite



Design Considerations for Coal Fired Boiler

In initial design stage, many points are considered, such as

operability, construction and anti-slagging.

Sufficient distance

between SH panels For easy construction and

anti-slagging

Suitable furnace sizing Against slagging

characteristics

Gas biasing damper For RH temperature

control

Optimized SH/RH

arrangement Based on static and

dynamic simulation

High performance

combustion system Low NOx burner and

vertical type pulverizer


Air Quality Control System for Coal Fired Plant

Stack

AH

ESP

Boiler

GGH

GG

H

360℃

130℃ 90℃ 50℃

One-stop AQCS solution by MHPS

* ESP will be supplied by MHI-Mechatronics Systems

or Hitachi Plant Construction

ESP*

(GGH: Gas to Gas Heater)

GGH

Heat Extractor GGH

Re Heater

FGD

SCR

2 次空気 2 次空気

Low NOx

Combustion

World lowest level emission (SOx, NOx, PM) can be achieved by applying the integrated AQCS system

Harmful NO is decomposed into harmless

N2 and H2O by catalytic action

4NO + 4NH3 + O2 → 4N2 + 6H2O

catalytic action

Harmful SO2 is recovered as

harmless gypsum(CaSO4)

SO2 + CaCO3 + 2H2O → CaSO4・2H2O + CO2

SCR FG

D


Netherlands: 2units

Poland: 2unit

Greece: 1unit

Jaypee Nigrie #1,2 Mahagenco Koradi

#8,9,10 Rajpura #1,2

Korea: 4 units

India: 15units (by L&T-MHPS Boilers Pvt. Ltd. as JV) Indonesia: 1unit

Paiton III Expansion

Taiwan Power Co., Ltd. LIN KOU #1-3

Taiwan: 8units

CFE Pacifico #1

Total: 160units MHPS : 110 units

Others: 50 units (Chinese licensee)

ENEL Torrevaldaliga Nord #2-4

Malaysia: 1unit

Boxberg R

German: 14units

South Africa: 12units

Mexico: 1uinit

Italy: 3units

China: 63units (by MHPS / Licensee)

Henung Yuhuan #1 to #4

Canada: 2units

Enea, Kozienice

Coal-Fired SC/USC Plant in overseas

USA: 4units

Midamerican Energy,

Walter Scott Jr. Energy

Center #4

Misumi #1

Japan: 26units

Australia: 1unit

CS Energy Kogan Creek #1

14

Output : 600 MW

Main Steam Flow : 1,770 t/h

Main Steam : 600 oC / 24.5 MPag

Reheat Steam : 600 oC

Commercial Operation : 2013/12

Fuel : Bituminous Coal

Latest USC Plant

Output : 670 MW


Main Steam : 600 oC / 29.3 Mpag


Commercial Operation : 2012/10

Fuel : German Lignite Coal

Germany Project Boxberg R Tokyo Electric Power Co., Ltd

Hirono #6


South Africa Project Medupi, Kusile

15

Medupi

Output : 6 x 800MW


Main Steam : 564 oC/ 25.7 MPag



SC technology is applied to South African Project

2 projects, total 12 boilers are under construction and commissioning


Kusile

Output : 6 x 800MW





Latest SC Plant

16

Output : 600MW x 2




Commercial Operation : 2004/12, 2005/3

Fuel : Chinese Anthracite

(VM: 8~15%)

Minimum Load 45%

(Without Support Fuel)

Combustion System

Opposed Firing

(Direct Firing)

NR Burner

MPS Mill

China Qinbei #1,2

•Anthracite firing boiler with conventional combustion system

MHPS Experience of Anthracite Firing Boiler


Activities at Indian Market


IPP L&T Rajpura 700MW x 2

IPP Jaypee Nigrie 660MW x 2

LMB(L&T-MHPS Boilers Private Ltd.)

LMTG(L&T MHPS Turbine Generators Private Ltd.)

Rajasthan State Power Generation /Chhabra 660MW x 2

NTPC /Tanda 660MW x 2

Maharashtra State Power Generation /Koradi 660MW x 3

Madhya Pradesh Power Generation /Shree Singaji 660MW x 2

NTPC /Khargone 660MW x 2

MHPS has contributed to Indian power generation CCT originated from Japan through the JV with Indian company, Larsen & Toubro, Ltd.


Indian Project Rajpura #1

Global Activity with SC/USC Technology

• Rajpura #1 was placed under commercial operation from Feb 1st, 2014

• This unit was constructed by joint venture established by MHPS and Indian local company Larsen &

Toubro, Ltd.

• Fuel is Indian high ash content bituminous coal (ash content is 30%)

• Local staff performed engineering/manufacturing/construction/commissioning works under MHPS’s

instruction

• High efficiency and reliability of Japanese leading CCT were also proved in India

Output : 700MW


Main Steam : 565 oC / 24.1 MPag


Thermal efficiency : Approx. 4 ~ 5% better*1

*1: Relative value as compared with Sub-critical plant

(16.7MPag, 538/538oC)

Fuel Property

Actual

HHV (kcal/kg, A.R.) 4,560

Fuel Ratio (-) 1.20

Moisture (A.R. %) 11.8

Ash (A.R. %) 27.5

Project Schedule

48.5 months from LNTP to

COD was achieved.

3. Advanced Clean Coal Technology


Integrated coal Gasification Combined Cycle

Higher efficiency through coal

gasification process coupled with a

combined cycle (CC) system.

Reduce CO2 emission by high

efficiency and prevent global

warming

What is IGCC?

Outline of IGCC System

20

C ～ T

HRSG

～

Gas Turbine

Coal

Gasifier

Clean up

Air Comp.

Air

Steam Turbine

Flue Gas

Combustor

Combined Power Generation (Combination of Brayton & Rankine Cycles)

TEPCO Fukushima IGCC Project (2020～)

Nakoso site, Hirono site

Joban Joint Power Co.LTD

Nakoso #10

(Demo. 2007-, Commercial 2013-)

Osaki CoolGen Corp.

Osaki CoolGen Project

(Demo. 2017-)

Rendering Image

IGCC Projects in Japan

(Demonstration and Commercial Plant)


*Integrated coal Gasification Combined Cycle

Nakoso 250MW IGCC Plant

21 © 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved

Nakoso 250MW IGCC

Major Specification

Output 250 MW (gross)

Gasifier Air-blown Dry Feed

Gas Clean-Up MDEA (Methyldiethanolamine)

Gas Turbine M701DA GT (1 on 1)

Plant Efficiency 42% (LHV, net)

Project Schedule

Operation Started Sep. 2007

Commercial Operation July. 2013

Nakoso 250MW IGCC Demonstration Plant achieved all the following targets. Excellent Performance (Highest Efficiency, Less Environmental impact)

Higher Reliability (World record of continuous operation 3,917hr)

Fine Operability (Load change rate >3%/min)

Fuel Flexibility (Verified applicability for low-rank coal, 10 kinds coals)

Converted to the First Commercial IGCC Plant in Japan. （Total operating hours are approx. 30,000 hrs.）

JSME* Medal for Technology (2013) Awarded

* Japan Society of Mechanical Engineering)

Commercial-scale IGCC Project

22 © 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved

High Efficiency by using state of the art Gas

Turbine

Lower CO2 emission intensity than the

latest USC coal fired power plant.

Fuel Flexibility for high moisture Low Rank

Coal

Highly Reliable system verified in Nakoso

250MW IGCC plant

Major Specification

Output 540 MW (gross)

480 MW (net)

Gasifier Air-blown Dry Feed

Gas Clean-Up MDEA

(Methyldiethanolamine)

Gas Turbine M701F GT (1 on 1)

23

MHPS’s Policy for Clean Coal Technology

MHPS shall be continuously developing

Clean Coal Technology to improve plant

efficiency and reduce CO2 emissions.

MHPS shall contribute to Environmental

Conservation and CO2 Emission Reduction

to provide Japanese clean coal technology

worldwide.


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