L&E Paper Technology

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The L&E Group of Companies

Produkte

Langbein & Engelbracht is a major engineer-ing and plant construction company with a long and illustrious tradition. We have written German industrial history, and our expertise as a maker of innovative production facilities has been in demand for more than 75 years. As L&E Group we have an interna-tional orientation and are represented by our subsidiaries in China and the USA. We manufacture at our site in Bochum in

Germany, collaborate with the best partners the world has to offer and inspire our custom-ers with our profound engineering know-how. We take on the special challenges of the various markets with our product development expertise. Whether the market is booming, technology leaps are being made, the econo-my is in a crisis or resources are scarce, we always have the right solution.

»Climate protection is a major issue in industrial manufacturing today, and it demands sustain-able concepts. We respond to this demand with our initiative ›rethink, redesign, rebuild‹. We ask the critical questions and are constantly looking for new ways to save energy and materials, to streamline production processes and offer new technologies – in short: to be truly innovative! That is how we help our customers shape a successful future.«

Dr. Peter EngelmannCEOengelmann@l-e.de

Head office: Bochum, Germany

Subsidiaries: Hering AG (Germany), L&E Shanghai (China), L&EAmerica (USA)

Products/Services: Planning, production and assembly of plants for a wide range of industrial applications

Industries: Automotive, chemicals, plastics, paper, packaging, wood processing, waste incineration

Employees: 316 employees, of which 75 are engineers in the development center in Bochum

L&E in brief

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The L&E product range for paper technology

�I�Paper�machine�hood�and�air�system a Hood system b Heat recovery system c Pocket ventilation d Wire section exhaust system e Hall ventilation system

� �II�Drying�technology a TransAir-dryer b ContacAir-dryer c AirTurn system d High-efficiency hood

� �III�Reject�and�fiber�sludge�drying

� �IV�Steam�and�condensate�system a Process automation system b Cascade system c Thermocompressor system d Yankee system e Steam blow box

� �V�Energy�analysis�service

� �VI�After�sales�service�

Our product range

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L&E Paper Technology

Products

We are the people & company to turn to when you want to save costs, energy and raw materials – for example, with our innovative concepts for the utilization of waste heat. We improve the overall energy balance of your paper machine so efficiently, that return on investments costs (ROI) is often just a few months. Our customers have told us that controlling and minimizing operating costs is a key to competing successfully. As a long-

Paper machines: Air ventilation and heat recovery

Steam and condensate systems

Paper driers

Reject and sludge driers

standing enterprise with a rich tradition and many years of experience in the paper industry, L&E began basing its research and development work on this fact very early on. We offer our worldwide customers environ-mentally friendly, high-performance solutions for both the innovative design of new plants as well as the optimizing of existing paper mills and machines. We advise and deliver turnkey total solutions on all continents.

References

Delfort Group

MM Karton

Mondi Group

Sappi Fine Paper Europe

SCA Packaging

Stora Enso

We combine years of experience with solutions for the future.

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Energy savings achieved by L&E process solutionsin %

Newsprint – 31%

– 31%

– 31%

– 31%

– 31%

Packaging paper

Writing/Printing paper

Thin printing paper

Tissue

Standard L&E optimized

Environmental regulations for the paper industry are getting tougher and tougher, the costs of raw materials and energy are rising, and at the same time industrial companies are being called upon increasingly to work as efficiently and as environment-friendly as possible. L&E supports this trend with its innovative process solutions. We plan and optimize the energy consumption of new and existing machines, thus improving the

productivity, quality and runability of our customers’ production sites.

With our many years of experience in the industry, we offer comprehensive and leading-edge process solutions for entire ventilating systems, steam and condensation systems, and drying technology within the paper machine and reject & sludge drying after waste paper pulping.

Pioneering process solutions

We optimize our customers’ energy balance.

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Possible energy savings in a paper factoryin %

Energy (heat) 24%

Reject 7%

With the L&E process solutions for saving energy,

we can influence as much as 30 percent of the

energy costs arising in the paper-making process

by analyzing and improving the existing equipment

for the drying sections of paper, cardboard and

tissue machines. L&E delivers, assembles and

services ventilating plants, steam and condensate

systems for a comprehensive and money-saving

energy concept. The resulting savings, mostly

related to savings in primary energy costs, kick-in

quickly and raise the efficiency of the production

machine. The improved ventilation systems

make it possible to create consistent production

conditions and drying profiles for the paper web,

often also improving the quality of the paper

produced, besides reducing energy costs.

Process solutions for saving energy Areas of potential for improving the energy balance

Optimizing energy consumption in the drying section

An active and sustainable contribution to environmental protection with integrated heat recovery and noise protection systems

Active protection of the building structure

Improved climatic conditions for the staff

Complete system solutions for building new plants

Expansion and/or modernizing existing plants

The L&E range of services

Web support

Heat recovery

Steam blow box

Air ex-traction

Steam and condensate systems

Air-Turn

Reject drying

Paper drying

Hall ven-tilation

Hood technology

Improved efficiency

Improved runability

More production

Improved quality

Customer

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Ratio of costs/exhaust-air dew point

Steam costs per year

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Waste-air dew point

48 50 52 54 56 58 60 62 64

Electricity costs for exhaust and supply air

Paper machine hood Heat recovery

Custom tailored to perfectly fit each paper machine and each building

The high dew point, designed for up to 64°C (147°F) of the waste air, enables effective heat recovery

Low primary energy requirement through improvements in heat insulation designed especially to save energy

Low false-air levels, even at low airflow conditions

Effective air/air-heat recovery thanks to the virtually self-cleaning glass-pipe exchanger

Glass pipe with long service life and ease of cleaning

Optimized heat exchangers guarantee high thermal efficiency

Air/Water heat-exchange for heating white water and heating water

Building heated using exhaust heat from the paper machine

Hood energy balance and heat recovery systems

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CondensateVapour

Air/Water

Air/Air

Steam

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Drying technology

The dryers are specially set up to dry paper, board, leaf, fiber tissue and tissue papers.

Systematically further developed for new plants or perfectly adapted to the relevant production conditions to improve quality and efficiency of existing plants

Ecologically and economically engineered

Patented CombiFoil blast pipes for short heating times, minimal downtimes and negligible losses of pressure

Specially designed blast pipes for a uniform and high heat-transfer factor

Internal and external arrangement of the heating and circulation units

TransAir-Dryer with no-contact web guidance, especially for floating webs, coated on one or both sides

ContacAir-Dryer with web guidance supported by guide rolls, especially for paper and board, coated on one side

AirTurn dryer with no-contact redirection and drying of paper, coated on one or both sides

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Steam and condensate systems

Steam and condensate systems tailored to the needs of the individual customers enables and ensures excellent product quality and high throughput during the drying process.

Efficient use of the entire steam-energy

Applicable for all paper weights and grades

High operating reliability and runability make short payback periods possible

Minimal service required

Cascade systems for an optimum heating curve and pressure sequence when drying

Thermocompressor systemsfor the individu-alized control of each drying group

Yankee systems with thermo-compressor for reducing the primary energy consump-tion

Exhaust Air

Filter

FanCompactor Reject Dryer

Rejectfeeding

Rejectdisposal

Process air heating

Exhaust air

Filter

Reject dryerCompactor

Rejectfeed-in

Rejectdisposal

Heat recovery

Reject and fiber sludge drying in recycle pulping operations

Final processing is done by pressing the now dried material into bales or briquettes, or sim-ply through compaction resulting inconsider-able further savings in disposal transport or increased uses for the dried sludge or rejects. The construction and mode of operation of the L&E Reject and Sludge drying system ena-bles payback periods of less than one year to be attained.

The resource-saving use of waste heat and reduction of landfill disposal also have a posi-tive effect on the environmental image and improve public acceptance to the paper mill owner as a 21st century “green technology” user.

Raise the dry content of rejects and sludge up to 90 percent

Robust and highly reliable construction

Short payback periods (often less than 1 year)

Active and sustainable environmental benefit by: – Using the waste heat from the paper

production process (no primary heating required)

– Reduced disposal transport costs by removing water from the waste rejects and sludge (tons of water removed per hour)

– Raising the heat value for now dry rejects and sludge by removing the water making the dried material a viable fuel source

The drying is done at low temperatures. This enables waste heat from the production proc-ess, boiler flue gases, gasturbines, etc. to be used intelligently and effectively. The simple and dependable construction combined with waste-heat recovery drying keeps operating costs to a minimum.

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Technological progress makes the use of low-temperature waste heat an important factor when optimizing energy consumption. For an efficient use of energy through the extended use of low-temperature waste heat, we put together a step-by-step concept together with the paper factory. The goal is to improve the level of efficiency by finding economical and realistic uses for this waste heat in the plant., We assist the customer from the analysis & design phase all the way to implementation of those concepts into the paper mill systems.

L&E is a partner to the paper industry, in developing and executing energy saving proc-esses to continuously and sustainably improve resource efficiency, taking into account all applicable statutory and regional regulations. We make sure that the energy lost through waste air and water in the paper factory is made use of efficiently.

Primary/Initial�assessment » Examine the entire ventilation plant, air volumes with regard to the hood and hall climate, heating operation, cylinder temperatures, etc. and assessment for the extended use of all the low-temperature heat.

Analysis » Analyze and assess the energy efficiency and the production and quality requirements

Action�plan » Develop a detailed action plan

Implementation » Implement the actions using L&E solutions

The first step in optimizing the energy bal-ance is assessing the existing situation. This is the basis for the analysis of the heat and energy usage within the paper factory and the potential improvements that result from it.

The L&E energy analysis

Was

te w

ater

Exha

ust

air

Raw materials PaperPaper mill

Energy

L&Eprocess solutions Customer goals

Environment-friendly process solutions

Primary/Initial assessment

Analysis

Action plan

Implementation

Improved efficiency

Increased productivity

Improved quality

Improved runability

With our many years of international experience in the paper industry, we are ready to further design and implement your heat and energy concepts with a wide range of innovative solutions.

Energy analysis service18 19

Germany

Langbein & Engelbracht GmbHHattinger Straße 95144879 Bochum, Germany

Phone +49 234 4173-0Fax +49 234 4173-100

www.l-e.de info@l-e.de

China

Langbein & EngelbrachtIndustrial Engineering and Supply Shanghai Ltd.3652 Cao’an Rd, Jiading District, 201812 Shanghai, China

Phone +86-21-3911 5191Fax +86-21-3911 5192

USA

L & E AmericaEnvironmental Technologies LLC2300 Northridge DriveKaukauna, WI 54130, USA

Phone +1 920 462 0319Fax +1 920 766 4600

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