Heat' by Michel

SCOTLAND’S CLIMATE 2020 – HEAT WORKSHOP

19th January 2015 MIKE DONALD

2 SCOTLAND’S CLIMATE 2020 – HEAT WORKSHOP


SUSTAINABLE MOBILITY

We have one profession and one mission:

Contribute to long term progress in the field of mobility.

Edouard Michelin

Mobility is the possibility of transporting people and goods

from one place to another. The sustainable nature of mobility,

i.e. a mobility which "can be carried by the planet and human

society over the long term", depends on our ability to develop

efficient answers, in partnership with all concerned.

Respect for the Environment is one of the pillars of our Performance and

Responsibility Approach.

We achieve and sustain our improvement through our ISO14001 Certified

Manufacturing Sites.

Our Products are the leaders in Fuel economy, leading to significant savings for

our customers and for CO2 emissions.



CASE STUDY DUNDEE

– One of 73 Michelin Sites

– One of 15 Car Tyre Plants in Europe

– Making Tyres in Scotland for 41 years

– 23,500 Daily and 7.5million Annual capacity

– Our market is UK and Europe with exports as far as India and China.

– Employ 850 people

– Contribution of around £45million to the local economy.

– Since 2006 we have been proud to have the first full scale urban Wind Turbines in Scotland



WHY IS HEAT IMPORTANT TO US?

• Gas consumption for the generation of steam accounts for the

majority of energy use at Michelin Dundee.

• It is also the source of around 22,000 tonnes of CO2 a year.

• The steam is mainly used to provide heating for several tyre

manufacturing processes.

• The most heat intensive process is Vulcanisation, where the

chemical composition of the tyre is altered using Pressure and

heat.

• In addition, our energy costs are among the highest in Europe,

putting us at a competitive disadvantage against similar competing

Factories.

• Today we will look at 3 opportunities we have engaged to change

our heat energy profile, and how we’ve gone about the work.



Energy Efficiency Event

TyreCuring Lines

Dundee



Origins and

Objectives

Origin : This is a Worldwide approach used for energy saving activities,

continuous improvement and elimination of waste. First Michelin studies of the method were completed in North America.

Objectives :

Establish the energy signature of the selected equipment Reduce the energy consumption

Establish a new energy consumption reference



Energy Attitudes

1

Eliminate Do we need this equipment or function ?

2

Repair Do we lose energy ?

3

Reduce Why do we use so much ?

4

Re-use Can we use it somewhere else ?

Is there a cheaper energy ? 5

Change



Heat Loss Images used to

pinpoint actions



Actions to Reduce Thermal Consumption

Lid Guide lagging

Reduction of around 15% achieved

Thruster Jack Lagging

System Elastic Lagging

Partie Flange Lagging

Convert to Bucket Traps

Reheat Reduction

Workshop Temp Outside+3

Orifice Plate Reduction



VENT STEAM RECOVERY • Condensate is produced from process steam as it gives up energy inside

the production machinery and condenses into water. The condensate is

very hot and remains at high pressure until it enters the lower pressure

condensate recovery system.

• Here, as the hot condensate reduces in pressure, the water boils and flash

steam is generated. This flash steam, however, contains valuable energy

and there were a number of locations at Dundee where it was simply

vented to the atmosphere and so the energy that it contained was lost.

• The Carbon Trust quantified the amount and cost of energy wasted at

each of these locations and was able to prioritise where further flash steam

recovery should take place.

• The Carbon Trust then identified specialised equipment which recovers the

heat in the flash steam and uses it to pre-heat boiler feed water.

• As a rule of thumb, vented steam with a plume of 2.5 meters in length

would produce 265 kg of steam each hour, which equates to 2,000 tonnes

of CO2 emitted by the boiler annually.

• By installing a system to recover heat from the flash steam that would

otherwise have been vented to atmosphere, Michelin has reduced gas

consumption by 3million kWh and reduced CO2 emission by 562 tonnes per

annum.

Auteur – date - Confidentiel DX - Durée de conservation du document ??? - Page 11

EXTERNALLY

SOURCED HEAT

SUMMARY OF PROJECT FEASIBILITY STUDY

PREPARED WITH

RESOURCE EFFICIENT SCOTLAND



Origin of the Need

• Our site 5 year plan demands a reduced manufacturing cost with an

increase in production

The cost of energy currently accounts for a significant part of our manufacturing cost. • There are also new stricter environmental emissions limits for 2016 vs

European Directive 2010/75/UE

• MICHELIN has a vision to reduce it’s environment footprint by 40%

from here to 2020.

• The Scottish Government has a target of 1.5TWh of District heat by

2020.

– Current District heating in Scotland accounts for around 20% of the target – This project represents around 8% of the gain required.



Existing Situation

• Michelin Boilerhouse – 3 Natural Gas Boilers with a total capacity of around50 MW(th)

• A similar sized Heat energy supply exists in the local area according to

Scotland’s Public Interactive Heat Map.



Technical Solution

The working principle of the installation is to start with superheated steam from an external source, and to convert it into dry saturated steam for our process in a steam to steam generator.

The main advantage of this solution is that the supply steam is entirely separate from the process steam, eliminating contamination concerns.

Michelin has already completed this type of installation at a plant in France.



AMBITIONS TOWARDS 2020

– Michelin Dundee has demonstrated significant savings and environment improvement through it’s heat recovery and energy improvement projects.

– To continue the progress we have started Michelin has published an ambition to reduce it’s Environment footprint by a further 40% for 2020. Each Site is expected to play it’s part to meet the targets.

– With assistance from Resource Efficient Scotland, we are studying a project to create heat energy synergies in our local area. This could lead to a significant reduction in our gas consumption and our direct CO2 emissions

– We have participated in meetings with Dundee City Council to explore how we can contribute to Local District heating opportunities in the future.

– We have deployed the first of 3 Machines to produce the next generation of Energy Saving tyres in a new building.

– Our Energy Efficiency Plan has identified a further 22% improvement over the next 5 years.

– We are also investigating the potential of other renewable power as the Energy Market and payback times develop.



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