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What is the best way of achieving energy efficiency in a a paper mill plant?

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Question added by Kennedy Ochieng , PRODUCTION SUPERVISOR , EAST AFRICAN PAPER MILLS LTD
Date Posted: 2015/02/07
Mahfuja parven
by Mahfuja parven , Assistant Director of Asia(Health) , GreenWorldOne

Greetings and Pardon to honorable Kennedy Ochieng Sir -U asked me while i preparing my final draft for FiRe, already  was sonicely explained by  Saroosh Sir and beg pardon my answer from my blog; 

 Greetings. 

climate.diplomacy.edu/profiles/blogs/sustanable-energy-for-sutainable-earth  Sustainable: the ability to keep in existence; maintain or prolong; to provide sustenance for.  CLEAN ENERGY: Promote only the most efficient products. Develop existing and new renewable energy sources to provide enough clean energy for all by2050.  GRIDS: Share and exchange clean energy through grids and trade, making the best use of sustainable energy resources in different areas.  ACCESS: End energy poverty: provide clean electricity and promote sustainable practices, such as efficient cookstoves, to everyone in developing countries.  MONEY: Invest in renewable, clean energy and energy efficient products and buildings.  FOOD: Stop food waste. Choose food that is sourced in an efficient and sustainable way to free up land for nature, sustainable forestry and biofuel production. Everyone has an equal right to healthy levels of protein in their diet – for this to happen, wealthier people need to eat less meat.  MATERIALS: Reduce, re-use, recycle – to minimize waste and save energy. Develop durable materials. And avoid things we don't need.  TRANSPORT: Provide incentives to encourage greater use of public transport, and to reduce the distances people and goods travel. Promote electrification wherever possible, and support research into hydrogen and other alternative fuels for shipping and aviation.  TECHNOLOGY: Develop national, bilateral and multilateral action plans to promote research and development in energy efficiency and renewable energy.  SUSTAINABILITY: Develop and enforce strict sustainability criteria that ensure renewable energy is compatible with environment and development goals.  AGREEMENTS: Support ambitious climate and energy agreements to provide global guidance and promote global cooperation on renewable energy and efficiency efforts.

look carefully,

MATERIALS: Reduce, re-use, recycle – to minimize waste and save energy. Develop durable materials. And avoid things we don't need.

As i visited from my RajShahi University as Industrial Tour in SugarCane Industry and our Honorable Professor Asad Sir got goldenaward from JAPAN for recycled sugarcane baggass. My Answer is Reduce, re-use, recycle – to minimize waste and save energy. Develop durable materials. And avoid things we don't need.Use Sugarcane Baggass for Energy Efficiency matter ,in BD ,there  was PaKshi Newsprint from Sugarcane Baggasses. But now sick industry. Ones Again thanks and seek pardon for delay reply,bcoz huge pending submission after Leonardo Energies63 modules of Sustainable Energy.Greetings and Best Regards.

Saroosh Baig
by Saroosh Baig , Junior Project Engineer , EnMasse (pvt) Limited, Lahore

the best ways to achieve energy efficiency in paper mill plants are by using of Combined Heat and Power (CHP) systems, using better control and energy efficient measures for chemical recovery furnaces such as black liquor solid concentrators (A study revealed that a900 ton per day pulp and paper mill which installed a liquor concentrator increased its solids content from73 to80 percent and reduced annual energy usage by about110,000 MMBtu), recovery furnace deposition monitoring for better control of depositions that may effect the efficiency of heat transfer surfaces. 

Most recovery furnaces have three stages of air injection but the use of third stage is limited. Fully using the third stage and adding a fourth air injection port can reduce carry over and tube fouling, thereby reducing the frequency of recovery furnace washing, which will lead to energy savings, because boiler shutdowns and reheat can be reduced.

for detailed reading reffer to http://www.epa.gov/nsr/ghgdocs/pulpandpaper.pdf

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