HASLE REFRACTORIES A/SHASLE-ISOMEMBRANE®

The ISOMEMBRANE® TECHNOLOGY

www.hasle-isomembrane.com

HASLE® Timeline

5HASLE® High Temperature Technology

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1875 1925 1948 1981 1988 2002 20061983

HASLE®in brief

o App. 50 employeeso Own production facilities in

Denmarko 7.500 tons (low-)cement

castables produced yearly

o 350 tons precast products for all High Temperature applications

o Clients worldwide

HASLE®ISOMEMBRANE®

o HASLE-ISOMEMBRANE – air in-leakage control.o A specially developed ceramic fiber membrane

solution – PROVEN TECHNOLOGYo Applied to 100’s of Power Plants worldwide

ISOMEMBRANE® & Gases

o Why use ISOMEMBRANE® in a Gas Fired Power Plant?o A simple solution to a critical

safety problem:o Vibrations in pipes cause

cracks in the boiler wallo Differential Pressure causes

emission of un-combusted gasses from the boiler house to adjacent dead spaces

o Leaks in the boiler floor area allows for gases to emit to the atmosphere.

o Picture courtesy of Tasei Corporation

ISOMEMBRANE® & Gases

• The ISOMEMBRANE® can prevent this…

o Natural gas (CH4+C2H6+C3H8 and other HC’s) cannot penetrate the ISOMEMBRANE® seal.

o ISOMEMBRANE® provides an economic, flexible and durable solution with a long life time

A Tight Seal

o The advanced ISOMEMBRANE® structure forms an impermeable seal o Installed on 5 gas-fired plants in the US – Latest on the ComED Power

Plant in Illinois

Lates

A Simple Installation Process

1. Shutdown of boiler & vacuum cleaning of boiler house2. ”Ceramic paper” is fixed to pipes and taped3. Brackets are mounted on pipes for improved structural

stability4. The sandwich-type ISOMEMBRANE® construction is

constructed around all pipes5. The ceramic fiber is held in place with a layer of HASLE®

castable (CS1300)6. The boiler is re-commissioned7. Duration: 2½ weeks, 20 men, 2 shifts (500MV boiler)

ISOMEMBRANE in a Power Plant

Fluegas & Fly-ash

o The coal fired power plant:o Leaks in expansion

joints and around pipe- and wall structures constitute ideal conditions for ingress of fluegas carrying fly-ash to dead spaces throughout the boiler house environment.

Hazelwood Power Plant, prior to installation of HASLE-ISOMEMBRANE

Why install ISOMEMBRANE®

o Avoid lenghty and expensive shutdowns

o Avoid cleaning out several feet of dust from dead spaces

o Improve work environmento Increase life-time of steel

structureso Fly-ash insulates

o Avoid long cool down times of boiler

o Increase boiler efficiencyo Prevents LOIo Decreases opacityo Decreases stress of ID Fan

Chisene Experience

Flyash - 3 metres deep

Fly ash can weigh several hundred tons, if water enters the boiler house environment and settles in the ash.

Severe risk of boiler roof collaps.

Leaks in a Polish Plant

Severe consequenses

o Risk of boiler roof collapso Significantly reduced

lifetime of steel structures

o Loss of combustion efficiency in boiler

o Cold air ingress into boiler results in increased power consumption

Installation & Results

Installation & Results

Before and After

Complete Installation

Before & After

Before & After

From Thought to Realisation

o Preparationo Customer realises and fights Air In-Leakage problemso Drawings and description of installation site is sent to HASLE®o Proposal and installation drawings are sent to cliento Preparation meeting at siteo Contract signature

o Project realisationo Plant is shut downo Client prepares plant and cleans up all dust in boiler voids o HASLE® arrives to site and installs the ISOMEMBRANE®

Project Timeline

 1st week  

2nd week    

3rd week   4th week

5th week    

Cool down                      

Penthouse vacuuming                      

Surface prepare                      

Re-vacuum                      

Installation                      

Release for operation                      

The Technology

o HASLE® has installed ISOMEMBRANE® in power plants from 9 to 2.200 MW.

o References China, USA, Australia, Denmark, Sweden, Norway, UK

o Short installation timeo Expected lifetime of app.

10 years.

The Technology

o A flexible membrane seal, developed especially for sealing up to 700 C degree.

o Sandwich construction with layers of high density ceramic fiber, a special metal mesh, finished with a sealing of HASLE®castable to the surface

o Fixes to any clean surface with HASLE® ISOFIX high temperature resistant glue

o Can be installed in many shapes according to actually need.

A unique product

o What makes the HASLE®ISOMEMBRANE® unique?o Specially designed ceramic

fiber materialso The HASLE® ISOFIX high

temperature resistant glue o The correct installation and

membrane construction by certified workers

o The long lifetime

HASLE Refractories A/S

Almindingsvej 76 DK- 3700 Roenne Tel: +4556951800 Fax: +4556953181 Mail: hasle@hasle-refractories.dk Web: www.hasle-refractories.com

• Contact: Jacob B. Turman• Mail: jt@hasle-refractories.dk • Tel. +45 5694 2617• www.hasle-isomembrane.com

• THANK YOU FOR YOUR ATTENTION