eagleburgmann helps pulp mill reduce water consumption

1
NEWS 2 EagleBurgmann helps pulp mill reduce water consumption E agleBurgmann Germany GmbH & Co Kg reports that its BestFlow valve is being used at Stora Enso’s pulp mill in Skutskär, Sweden, to control the amount of water that is consumed as a barrier medium for mechanical seals installed on pumps. In the process used at the mill, the pulp digester, which runs continuously, is con- nected to a bladder tank. A stock pump conveys the pulp with black liquor from this tank to the downstream washing and bleach- ing section. An EagleBurgmann Cartex-DN mechanical seal is installed on the Sulzer APP pump. Water is used as a barrier medium for lubricating and cooling the faces of the dual cartridge seal and to prevent product from leaking into the atmosphere. As a barrier fluid, the water flows through the seal continuously, so Stora Enso needed to reduce the amount it consumed. An approach which protects resources is not only good for the environment, but saving water and energy, also makes it possible to achieve a substantial and measurable reduction in costs. Furthermore, according to EagleBurgmann, investigations have also shown that the level of flush or barrier water consumed is often above the recommended level because this is believed to be necessary for safety reasons. Therefore, many pulp and paper producers are keen to run seal systems while meeting the requirements necessary for operational safety, but also using only a minimum amount of water. The BestFlow valve regulates barrier medium consumption as a function of temperature. If the temperature in the seal rises above the maxi- mum permitted value, the valve automatically opens. Fresh, cool barrier water can then flow into the seal chamber. As soon as the seal or the barrier water has cooled down, the valve closes and the flow is stopped. This ensures that an exchange of barrier water takes place only when the seal needs to be cooled. This results in enormous savings in terms of water consumption, without affecting operation- al reliability and safety, says EagleBurgmann. ‘After the BestFlow control valve was installed in our pulp mill, the consumption of barrier water was reduced by 90%,’ explained Ulf Runesson, who is in charge of mechanical maintenance for pulp production operations at Stora Enso Fors. ‘We have now installed the BestFlow valve in all the pumps in our evaporation plant and plan to do the same in other areas of the mill as well. This is saving us a great deal of water. We are very satisfied with the results.’ The valve has a compact design and is easy to install and use. It does not require additional connection lines or a power supply and because it is sensitive solely to temperature it is not affected by pressure fluctuations. Contact: Ellen Klier, EagleBurgmann Germany GmbH & Co Kg, Äußere Sauerlacher Str. 6–10, 82515 Wolfratshausen, Germany. Tel: +49 8171 23 1453, Fax: +49 8171 23 1095, Email: [email protected], www.eagleburgmann.com Sealing Technology February 2012 Editorial Office: Elsevier Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK Fax: +44 (0)1865 843973 Web: www.sealingtechnology.info Publisher: Greg Valero E-mail: [email protected] Editor: Simon Atkinson Tel/Fax: +44 (0) 1904 655944 E-mail: [email protected] Technical Editor: Bob Flitney Tel: +44 (0)1588 661056 E-mail: [email protected] Production Support Manager: Lin Lucas E-mail: [email protected] Editorial advisory board: Yves Birembaut (F) • Cyril X Latty (F) Amrat Parmar (UK) • Richard F Salant (USA) Wolfgang Schöpplein (D) • Shuzo Seya (J) Scott Svendsen (USA) • Dr Brian S Ellis (UK) Subscription Information An annual subscription to Sealing Technology includes 12 issues and online access for up to 5 users. Prices: 1273 for all European countries & Iran US$1427 for all countries except Europe and Japan ¥169 100 for Japan (Prices valid until 31 December 2012) To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971 Email: [email protected], or via www.sealingtechnology.info. Subscriptions run for 12 months, from the date payment is received. Permissions may be sought directly from Elsevier Global Rights Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 1865 853333, email: [email protected]. You may also contact Global Rights directly through Elsevier’s home page (www.elsevier.com), selecting first ‘Support & contact’, then ‘Copyright & permission’. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, fax: +1 978 750 4744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London W1P 0LP, UK; phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other countries may have a local reprographic rights agency for payments. Derivative Works Subscribers may reproduce tables of contents or prepare lists of arti- cles including abstracts for internal circulation within their institutions. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations. Electronic Storage or Usage Permission of the Publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the Publisher. Address permissions requests to: Elsevier Science Global Rights Department, at the mail, fax and email addresses noted above. Notice No responsibility is assumed by the Publisher for any injury and/ or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any meth- ods, products, instructions or ideas contained in the material herein. Because of rapid advances in the medical sciences, in particular, inde- pendent verification of diagnoses and drug dosages should be made. Although all advertising material is expected to conform to ethical (medical) standards, inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer. 12980 Digitally Produced by Mayfield Press (Oxford) Ltd EagleBurgmann Germany GmbH & Co Kg’s BestFlow valve (left). Connected to the Cartex-DN seal on a pump at Stora Enso’s pulp mill in Skutskär, Sweden (right), this valve is helping to reduce the volume of water that is consumed as a barrier fluid.

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Page 1: EagleBurgmann helps pulp mill reduce water consumption

NEWS

2

EagleBurgmann helps pulp mill reduce water consumption

EagleBurgmann Germany GmbH & Co Kg reports that its BestFlow

valve is being used at Stora Enso’s pulp mill in Skutskär, Sweden, to control the amount of water that is consumed as a barrier medium for mechanical seals installed on pumps.

In the process used at the mill, the pulp digester, which runs continuously, is con-nected to a bladder tank. A stock pump conveys the pulp with black liquor from this tank to the downstream washing and bleach-ing section. An EagleBurgmann Cartex-DN mechanical seal is installed on the Sulzer APP pump. Water is used as a barrier medium for lubricating and cooling the faces of the dual cartridge seal and to prevent product from leaking into the atmosphere.

As a barrier fluid, the water flows through the seal continuously, so Stora Enso needed to reduce the amount it consumed. An approach which protects resources is not only good for the environment, but saving water and energy, also makes it possible to achieve a substantial and measurable reduction in costs.

Furthermore, according to EagleBurgmann, investigations have also shown that the level of flush or barrier water consumed is often above the recommended level because this is believed to be necessary for safety reasons. Therefore, many pulp and paper producers are keen to run seal systems while meeting the requirements

necessary for operational safety, but also using only a minimum amount of water.

The BestFlow valve regulates barrier medium consumption as a function of temperature. If the temperature in the seal rises above the maxi-mum permitted value, the valve automatically opens. Fresh, cool barrier water can then flow into the seal chamber. As soon as the seal or the barrier water has cooled down, the valve closes and the flow is stopped. This ensures that an exchange of barrier water takes place only when the seal needs to be cooled.

This results in enormous savings in terms of water consumption, without affecting operation-al reliability and safety, says EagleBurgmann.

‘After the BestFlow control valve was installed in our pulp mill, the consumption of barrier water was reduced by 90%,’ explained Ulf Runesson, who is in charge of mechanical maintenance for pulp production operations at Stora Enso Fors.

‘We have now installed the BestFlow valve in all the pumps in our evaporation plant and plan to do the same in other areas of the mill as well. This is saving us a great deal of water. We are very satisfied with the results.’

The valve has a compact design and is easy to install and use. It does not require additional connection lines or a power supply and because it is sensitive solely to temperature it is not affected by pressure fluctuations.

Contact:

Ellen Klier, EagleBurgmann Germany GmbH & Co Kg,

Äußere Sauerlacher Str. 6–10, 82515

Wolfratshausen, Germany.

Tel: +49 8171 23 1453, Fax: +49 8171 23 1095,

Email: [email protected],

www.eagleburgmann.com

Sealing Technology February 2012

Editorial Office: Elsevier Ltd

The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK

Fax: +44 (0)1865 843973Web: www.sealingtechnology.info

Publisher: Greg ValeroE-mail: [email protected]

Editor: Simon AtkinsonTel: +44 (0) 1904 655944

E-mail: [email protected]

Technical Editor: Bob Flitney Tel: +44 (0)1799 501659

E-mail: [email protected]

Production Support Manager: Lin LucasE-mail: [email protected]

Editorial advisory board: Yves Birembaut (F) • Cyril X Latty (F)

Amrat Parmar (UK) • Richard F Salant (USA) Wolfgang Schöpplein (D) • Shuzo Seya (J)

Scott Svendsen (USA)

Subscription InformationAn annual subscription to Sealing Technology includes 12 issues and online access for up to 5 users.Prices: �1215 for all European countries & Iran US$1362 for all countries except Europe and Japan ¥161 400 for Japan (Prices valid until 31 February 2012)To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971Email: [email protected], or via www.sealingtechnology.info. Subscriptions run for 12 months, from the date payment is received.

Permissions may be sought directly from Elsevier Global Rights Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 1865 853333, email: [email protected]. You may also contact Global Rights directly through Elsevier’s home page (www.elsevier.com), selecting first ‘Support & contact’, then ‘Copyright & permission’. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, fax: +1 978 750 4744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London W1P 0LP, UK; phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other countries may have a local reprographic rights agency for payments.Derivative WorksSubscribers may reproduce tables of contents or prepare lists of arti-cles including abstracts for internal circulation within their institutions. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations.Electronic Storage or Usage Permission of the Publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the Publisher. Address permissions requests to: Elsevier Science Global Rights Department, at the mail, fax and email addresses noted above.NoticeNo responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any meth-ods, products, instructions or ideas contained in the material herein. Because of rapid advan ces in the medical sciences, in particular, inde-pendent verification of diagnoses and drug dosages should be made.Although all advertising material is expected to conform to ethical (medical) standards, inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer.

02129 Digitally Produced by Mayfield Press (Oxford) Ltd

Editorial Office: Elsevier Ltd

The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK

Fax: +44 (0)1865 843973Web: www.sealingtechnology.info

Publisher: Greg ValeroE-mail: [email protected]

Editor: Simon AtkinsonTel/Fax: +44 (0) 1904 655944

E-mail: [email protected]

Technical Editor: Bob Flitney Tel: +44 (0)1588 661056

E-mail: [email protected]

Production Support Manager: Lin LucasE-mail: [email protected]

Editorial advisory board: Yves Birembaut (F) • Cyril X Latty (F)

Amrat Parmar (UK) • Richard F Salant (USA) Wolfgang Schöpplein (D) • Shuzo Seya (J)

Scott Svendsen (USA) • Dr Brian S Ellis (UK)

Subscription InformationAn annual subscription to Sealing Technology includes 12 issues and online access for up to 5 users.Prices: �1273 for all European countries & Iran US$1427 for all countries except Europe and Japan ¥169 100 for Japan (Prices valid until 31 December 2012)To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971Email: [email protected], or via www.sealingtechnology.info. Subscriptions run for 12 months, from the date payment is received.

Permissions may be sought directly from Elsevier Global Rights Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 1865 853333, email: [email protected]. You may also contact Global Rights directly through Elsevier’s home page (www.elsevier.com), selecting first ‘Support & contact’, then ‘Copyright & permission’. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, fax: +1 978 750 4744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London W1P 0LP, UK; phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other countries may have a local reprographic rights agency for payments.Derivative WorksSubscribers may reproduce tables of contents or prepare lists of arti-cles including abstracts for internal circulation within their institutions. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations.Electronic Storage or Usage Permission of the Publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the Publisher. Address permissions requests to: Elsevier Science Global Rights Department, at the mail, fax and email addresses noted above.NoticeNo responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any meth-ods, products, instructions or ideas contained in the material herein. Because of rapid advan ces in the medical sciences, in particular, inde-pendent verification of diagnoses and drug dosages should be made.Although all advertising material is expected to conform to ethical (medical) standards, inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer.

12980 Digitally Produced by Mayfield Press (Oxford) Ltd EagleBurgmann Germany GmbH & Co Kg’s BestFlow valve (left). Connected to the Cartex-DN seal

on a pump at Stora Enso’s pulp mill in Skutskär, Sweden (right), this valve is helping to reduce the volume of water that is consumed as a barrier fluid.